DE102012103287A1 - Battery pack box - Google Patents

Abstract

The present invention relates to a battery block box (100) having four side walls (1, 1 '), a bottom plate (2) and a block cover (3), the bottom plate (2) having an upper side and the side walls (1, 1') inner sides and outer sides and by the top of the bottom plate (2) and the inner sides of the side walls (1, 1 ') an inner space (4) is limited, which is closable by the block cover (3). In order to provide a device which, even with a low weight and volume of the actual battery, makes available a size and a corresponding weight required for a specific use, it is proposed according to the invention that at least one outer side of a side wall (1) remote from the inner space (4) be provided , 1 ') at least one space cell (5, 5') is arranged, which encloses a receptacle (6) at least partially and delimited from the environment, so that in the receptacle (6) at least one object and / or a medium for increasing the weight of the battery box (100) can be introduced.

Description

The present invention relates to a battery box with four side walls, a bottom plate and a block cover, wherein the bottom plate has an upper side and the side walls inside and outside sides and bounded by the top of the bottom plate and the insides of the side walls, an interior, which is up through the Block cover is closable.

Batteries, and especially rechargeable batteries, are used to supply power and power to a variety of electrically powered devices. It is necessary to provide a given voltage for a particular application, which is needed for proper performance. Individual battery cells consist essentially of electrodes, separators, i. ion-permeable separating elements for the spatial and electrical separation of electrodes of different polarity, an electrolyte, a cell vessel and other parts necessary for the assembly and connection of a battery. Since such battery cells have a fixed rated voltage depending on the plates and electrolytes used, the provision of a higher voltage battery through a series connection of battery cells can be made possible. In addition to the electrical connection of the battery cells, it makes sense to physically summarize the individual battery cells. In known household batteries used this z. B. by using a shrink tube, which includes the individual battery cells.

In the automotive sector, lead-acid batteries are commonly used, with lead electrodes and an electrolyte comprising sulfuric acid, in which the nominal voltage of a battery cell is 2.0 V and which have a considerable weight and a standardized size. For the use of such battery cells as traction batteries (traction batteries), however, voltages of z. B. 6 V, 24 V or even 80 V required, which are achieved by a series connection of multiple lead-acid battery cells.

For the combination of individual lead-acid battery cells to larger batteries that provide higher voltages, there are two different concepts in the prior art. In one concept, multiple individual battery cells are used each with independent receptacles for the battery. The individual battery cells are arranged in a battery tray and thus summarized in a spatially compact manner. A battery tray is a substantially cuboidal trough made of plastic or metal. Individual adjustments to larger weight and / or size requirements can be achieved by choosing a larger battery trough. Since the individual battery cells represent freely movable components in this case, they can be arranged in a simple manner in battery trays of different sizes, as long as they have a certain minimum size. In this case, any remaining voids in the battery tray are optionally filled with filling elements such that slipping of the battery cells is prevented. In the case of too low a total weight of the battery weights are selected as filling elements.

Alternatively, battery box boxes are used for the combination of multiple battery cells, which are made of an ion- and electron-impermeable material, typically made of plastic, and contain partitions and separated by the partitions of the battery cells. The advantage of such a battery box compared to a battery composed of several individual battery cells in a battery tray is that the use of a battery box box individual receptacle for the battery cells are redundant and thus both material and costs are saved. As a result, such compact battery box cases are generally both smaller and lighter compared to battery-fitted battery cells. However, if such batteries are provided with battery box, for example, as traction batteries for installation in electric vehicles, some problems may occur. Among other things, the recesses or battery racks within the vehicles intended to accommodate the batteries are generally already designed to accommodate the larger dimensions of battery trays. Moreover, the weight distribution and balance of the vehicle is often designed for the widespread drive batteries with battery trough, the weight of the battery being e.g. as a counterweight for the loading of a forklift or similar transport device is used. However, an adaptation to a required weight and to predetermined dimensions is not possible when using known battery lock boxes, since in these the external dimensions and in particular the weight are determined essentially by the electrochemical properties of the battery cell.

Based on this prior art, the present invention has the object to provide a device that provides even with a low weight and volume of the actual battery required for a particular use size and a corresponding weight.

This object is achieved by a battery box described above, wherein at least one interior cell facing away from the outside of a side wall of the battery block box at least one room cell is arranged, which surrounds a receptacle at least partially and delimited from the environment, so that at least one object and / or a medium for increasing the weight of the battery block box can be introduced.

Under a recording is a cavity to understand, which is at least partially enclosed by one or more sections of material and separated from the environment. In this case, the material sections delimiting the cavity from the environment are designed in such a way that the object and / or the medium can be introduced into the cavity and, if appropriate, the cavity can be closed off from the environment. Such a recording together with the material sections delimiting it form a spatial cell. Such a space cell in the sense of the present invention preferably has at least four planar material sections, two of which are arranged substantially perpendicular to the bottom plate and substantially perpendicular to a side wall of the battery box box to which the space cell is attached, a third substantially parallel to a side wall of the battery block box, to which the space cell is attached, and a fourth below the other material portions, wherein the space enclosed by the material portions cavity is preferably open at the top. Substantially perpendicular or essentially parallel here means perpendicularly or parallel within the framework of an angle tolerance of ± 10 °. The material sections thus advantageously limit the freedom of movement of an object introduced into the cavity and / or of a medium, both laterally and downwardly. When the battery box is set up as intended, the object and / or the medium is preferably held in the cavity by the delimiting material sections at least with respect to the force of gravity.

The outer and inner dimensions as well as the shape of the at least one room cell can be adapted to the space to be filled by the battery block box as well as to the weight or medium. In particular, shapes such as e.g. a space cell in the form of a cuboid, wherein the walls of the cuboid preferably have substantially constant wall thicknesses, or even rounded shapes. The walls of the room cell may in certain embodiments be partially broken, wherein preferably at least one portion of material at the bottom of the room cell is present. It is understood that the space cell is preferably sized so that it does not protrude above and / or below the battery box case. In certain embodiments, the compartment cell has the same height as the battery block box to which it is attached.

As used herein, a weight and / or medium generally refers to an article or medium of suitable net weight whose purpose is to increase the total weight of the battery and thus meet a given weight requirement. The weight and / or medium may be in solid and compact form (e.g., as lead weight or blocks of other metals or metal mixtures), as individual particles (e.g., sand), or in liquid form. By appropriate selection of substances with different specific weights as weight and / or medium, the weight of the battery block box can be increased in accordance with the requirements when completely filling a room cell.

Preferably, the battery block box, on which the room cell is arranged, is substantially cuboid, wherein in some embodiments, all or part of the edges are rounded. However, without departing from the spirit of the present invention, other forms of a battery block case are conceivable in principle, in particular forms with polygonal floor plans and prism shapes. Further, in certain embodiments, the battery pack case has one or more carrying devices attached to one or more sidewalls, to the lid, or to the bottom plate of the battery pack case.

The block cover generally has one or more openings and / or passages for connections and / or valves.

The inventive arrangement of at least one space cell on at least one outer wall of the battery block box, the side circumference of the battery block box is extended and thus increases the external dimensions of the battery. This makes it possible to realize battery lock boxes of different sizes, all of which have the same internal size. Thus, for each of the different size requirements, precisely fitting battery box boxes can be made available with the same electrical properties of the battery, so that the battery box boxes can preferably be used in a form-fitting manner when installed as intended. As a result, when installed in a vehicle, on the one hand, the danger of impairing the driving characteristics by slipping of the battery block box is prevented and, on the other hand, the stability of the vehicle is increased. In principle, the arrangement of one or more room cells on a battery block box moreover enables an extension of the shape of the battery Battery block box on the typical predetermined cuboid basic shape addition to other geometric shapes or adaptation to other geometric shapes. In addition to an increase in the battery size, a room cell allows the realization of different total weights of a battery by the introduction of different weights and / or media in the room cell. The weight adjustment is independent of the electrical properties of the battery. Thus, using a battery box of the present invention having at least one space cell, it is possible to provide batteries that meet the same size and / or weight requirements as a battery composed of single cells in a battery tray, yet save material and cost.

The attachment of at least one room cell to at least one side facing away from the interior of a side wall of the battery box means that one or more space cells are arranged on the outside of one or more side walls of the battery box. On one side wall, for example, one, two, three, four, five, six or more room cells may be arranged.

In addition to the above-mentioned advantages, a space cell disposed on an outer wall of a battery box box also contributes to an increase in the rigidity of the battery box box because it constitutes a support member of the side wall.

The battery box boxes described herein are preferred, but not limited to, for traction batteries for powering electric vehicles, and may be both a fixed and an interchangeable component of the vehicle. In particular, they are intended for electrically powered industrial trucks. The voltages of the drive batteries used depend on the requirements of the respective vehicle type. For example, 24-volt batteries are common in mini forklift trucks and 80-volt batteries for forklift trucks in high-bay warehouses and in heavy-duty operations. In addition, however, applications with other voltages are known. To achieve different voltages, several battery cells are conductively connected to a larger battery. For example, for a 24 volt battery, twelve individual battery cells are connected in series with a single voltage of two volts each.

The internal dimensions of a battery block box according to the invention are essentially determined by the physical specifications of the battery cells and the desired power of the battery. In a battery block box of a 24-volt battery, preferably, twelve cuboid battery cells are arranged in four rows of three battery cells each to form a compact cuboid. The battery cells are separated from each other by partitions in the battery block box, thereby providing completely separated partitions in the battery block box, which are also referred to herein as interior cells. It is understood, however, that in principle the internal dimensions can be varied by, for example, arranging battery cells with the same dimensions in more or fewer rows, thereby making it possible to provide longer, but at the same time narrower batteries or wider and at the same time shorter batteries. Of course, this also affects the outer dimensions of the battery box without space cell (s). For the exact adaptation of the outer circumference of a block battery to special design dimensions of a vehicle in which the battery is to be used, according to the invention, at least one outer cell of a side wall is arranged at least on one outer side. The total size of the battery block box with one or more room cells is determined by the shape, size and number of room cells.

In one embodiment, the inclusion of a space cell to additionally increase the rigidity and better fix individual weights on one or more arranged in it partitions, by which it is subdivided into sub-cells. A plurality of space cells attached to a battery block box and, in particular, space cells attached to a sidewall of a battery block box are mounted flush adjacent one another in certain embodiments so that side boundary surfaces / side walls of adjacent space cells are flush with each other or adjacent space cells share a lateral boundary surface / side wall ,

One embodiment of a battery block box according to the invention has on the outer sides of opposite side boxes each at least one room cell. Preferably, it has on the outer sides of all four side walls in each case at least one room cell. The arrangement of space cells on opposite side walls allows a uniform extension of the periphery of the battery box box, wherein the advantages of increased rigidity for at least two or for all four side walls are realized. In addition, such an arrangement of the space cells prevents unilateral weight increases of the battery and thus center of gravity shifts.

In one embodiment, space cells on the outer sides of opposite outer walls are each configured symmetrically to one another and arranged. The term "symmetrical" means that the property of a rotational symmetry is maintained in a symmetrical without a space chamber attached battery block box with an axis perpendicular to the bottom plate symmetry axis even after the attachment of room cells. By such a symmetry, the realization of a uniform weight distribution is favored.

In one embodiment, the at least one space cell extends along the outside of at least two side walls in contact with one another at an edge and around the edge. Such a configuration and arrangement of a room cell also contributes to the stabilization of the battery box box, as supported by both side walls at the same time and also fixed against each other.

If the room cell extends along the outer sides of all four side walls and / or encloses the entire side circumference of the battery block box in one embodiment, then the battery block box with the room cell has a cuboid outer shape. In this embodiment, by means of partitions which are arranged in the space cell, all side walls of the battery block box can be stabilized and a maximum number of additional weights can be distributed around the interior of the battery box box. In one embodiment, a plurality of space cells are arranged around the entire circumference of the battery box and are preferably flush with each other. Also in this embodiment, the best possible stabilization of the side walls of the battery block box.

In one embodiment, the at least one compartment is substantially box-shaped, with four lateral walls and a bottom, the compartment having an opening at its upper end. The term "substantially box-shaped" refers to a room cell which is substantially cuboid inside and outside, wherein embodiments with rounded corners and / or edges are conceivable. For recording cuboid and thus slightly stapelbzw. combinable weights is an embodiment with box-shaped ausgestalteter space cell advantageous. By opening provided at the upper end of the room cell, a weight and / or medium can be easily introduced into the room cell. Box-shaped room cells are also advantageous because of their simple and symmetrical shape, since they cause a low production cost and correspondingly lower costs.

In one embodiment, in or parallel to the plane of the base plate of the battery pack case, at least one support connected integrally to a sidewall extends outwardly from the sidewall, the at least one support extending at least below a portion of the bottom of the at least one space cell attached to the outside of a sidewall is arranged flush or the support forms the bottom of the at least one attached to the outside of a side wall space cell. In an embodiment in which the support extends in the plane of the bottom plate, the support constitutes a partial extension of the bottom plate, the underside and / or top preferably lying in a plane with the bottom and / or top of the bottom plate. Since the bottom plate and side walls of a battery box are formed integrally, this also constitutes an integral with the side wall support. When the support extends parallel to the plane of the bottom plate, it is an element which is integrally connected to the side wall and perpendicular extends to this, but at the same time parallel to the plane of the bottom plate. When installed as intended, the battery box is therefore a horizontally extending support. The support has in certain embodiments the same material thickness as the bottom plate, but may also have a greater or lesser material thickness. A support disposed flush beneath at least a portion of the floor of a room cell includes embodiments in which the floor of the room cell rests completely or partially on the support, and embodiments in which the floor of the room cell is fully or partially fixedly connected to the support, and embodiments in which the floor of the room cell is formed integrally with the support. The support effects stabilization of the attachment of the compartment and / or the weight or medium contained therein to the battery box and prevents the compartment and / or the weight or medium contained therein from sliding down relative to the block box.

In a preferred embodiment, the battery block box has at least one support for each room cell. As a result, the above-described stabilization is performed on each room cell attached to the battery box box. In certain embodiments, support is arranged under a plurality of room cells or forms the floor of a plurality of room cells. In certain embodiments, multiple supports may also be disposed below a room cell or form the floor of a room cell.

In one embodiment, the at least one room cell has a cover element through which the receptacle of the room cell, preferably liquid-tight, closable. On the one hand, the cover element prevents movements of the weight within the room cell and out of the room cells. On the other hand, the cover at the same time provides protection of the weight and / or medium, in particular against the ingress of moisture and / or battery acid or other liquids, which under certain circumstances can enter into unwanted reactions with the weight and / or medium or else only to an undesired one Can increase the weight. In order to effectively prevent the ingress of liquids and in particular of battery acid into the space cells, in certain embodiments in the fully assembled state of the battery block box, ie after a weight and / or medium has been introduced into a room cell, a liquid-tight closure of the room cell with a cover element is provided by sealing, gluing or welding. Preferably, such space cells are sealed liquid-tight, in which there is no weight and / or medium.

In one embodiment, the block cover and the at least one cover element of the at least one room cell are integrally formed. By such a one-piece molding block cap and cover stabilize each other. This increases the overall stability and rigidity of the battery block box.

In one embodiment, the space cell has a depth of about 10 mm to about 40 mm, preferably about 15 mm to about 30 mm. In this case, the depth designates the maximum distance of a lateral wall of the cell which is substantially parallel to the side wall of the battery block box, on which the cell is arranged, perpendicular to this side wall. At a depth of this order of magnitude, the size of the receptacle of the room cell is dimensioned so that an additional weight with a typically necessary own weight can be introduced in a form-fitting manner into this room cell.

In a particularly preferred embodiment, the at least one space cell is integrally formed on the outside of a side wall. By integrally molding fasteners or seams are avoided, which are susceptible to interference or breakage under long-term load. This is of particular interest when corresponding batteries are exposed to continuous vibrations, for example as drive batteries in vehicles. Advantageously, such battery box boxes are made with integrally molded plastic space cell as a molded part in an injection molding. Suitable materials for this purpose are all types of plastics which are processable by injection molding and acid-resistant, in particular polypropylene and polyethylene.

In an embodiment of a battery box described above in which the at least one space cell is integrally formed on the outside of the side wall, by injection molding both shape, size and number of molded space cells, for example by means of removable plates, which are insertable and interchangeable in the injection mold, can be freely varied depending on the requirement. For injection molding in particular box-shaped space cells prove to be advantageous because of their simple and symmetrical geometry, since the corresponding injection molds and removable plates are relatively easy and inexpensive to produce.

In certain embodiments, the battery box has on the outside of at least one side wall one or more attachment portions, wherein the at least one space cell in the one or more attachment portions is positively inserted. The mounting portions are either designed such that a releasable or a solid connection can be produced by them. A solid connection is characterized by the fact that once closed, it can only be loosened again by damaging the fastening sections. In certain embodiments, a mounting portion is formed either integrally or made up of a plurality of parts. An embodiment in which a compartment cell is insertable into one or more mounting sections allows flexible adaptation of a given battery box to different weight and size requirements by mounting and, in the case of a detachable connector, removal or replacement of different compartment cells.

In one embodiment, a room cell has at least one corresponding engagement section, which is connectable to at least one attachment section on the outside of a side wall. By connecting an engaging portion of the space cell to a mounting portion on the outside of a side wall, the space cell is connected to the side wall. In certain embodiments, an engagement portion is formed either in one piece or consisting of several parts. The engagement portion may, in certain embodiments, be connected to the attachment portion directly or with an additional connection member, such as a locking pin. This connection can be configured fixed or detachable. A detachable attachment option offers the advantage over integrally molded space cells, even after the production of the battery box box Dimension and weight of the battery box to change. In contrast, integrally molded space cells are usually more stable connected to the side walls of the battery box box, which in turn proves to be an advantage when attaching large weights.

In one embodiment, the attachment portions are ribs perpendicular to the bottom plate, the battery pack case having at least two ribs on the outside of at least one sidewall, and the ribs having an undercut and / or T- or L- or cross-shaped profile in plan view of the sidewall exhibit. It is understood that the profile indicates the shape having a cross-section of a rib perpendicular to its longitudinal extent. An undercut of the ribs in plan view of the side wall can be brought in certain embodiments with a corresponding, complementary, integrally formed on the spatial unit engagement portion by inserting the engagement portion in the undercut positively engaged. In particular, it proves to be advantageous if the ribs are designed such that they have a T or L or cross-shaped profile. A T-shaped profile is particularly suitable for a rib which is arranged between two further ribs, since such a rib with T-section on both sides can each engage with a corresponding complementary engagement portion on a space cell. In addition, other known from the prior art profiles are used as ribs in embodiments of the battery box box, as far as they have an undercut, with which an engagement portion can engage.

If, for certain applications, an additional weight increase is unnecessary due to sufficient battery weight, for example, solely due to the inherent weight of the built-in electrochemical elements, in certain embodiments ribs attached to the outside of a sidewall act as elements that increase the size of the battery pack box.

In certain embodiments, the attachment portions and / or ribs are connected to or have such support as described above.

In one embodiment, the at least one article and / or the at least one medium for increasing the weight of the battery block box is introduced into the receptacle of at least one of the at least one spatial cell. Only the room cell with a corresponding additional weight leads to the realization of an optionally required increase in weight of the battery block box. Preferably, the space cell, in which an object and / or medium is introduced, closed by a cover member described above.

In one embodiment, the density of the article and / or medium introduced into the spatial cell is more than 6 g / cm ³ . Preferably, a lead weight is used as an object for increasing the weight in the space cell. The density of lead is about 11.34 g / cm ³ . Also, weights of steel, the density of which is generally about 7.85 g / cm ³ to about 7.87 g / cm ³ , are advantageous. By using such objects, which consist of a material with high specific gravity, a large increase in weight in a battery block box can be realized to save space even with small space cells. Thus, by using lead weights and / or weights of comparable density sufficient weight gain of the battery is made possible at the same time very compact design of the battery box.

The object underlying the invention is also achieved by a battery having a battery box described above. It will be understood that the battery includes other elements necessary for the functioning of the battery, including electrode plates, separators, electrolyte, ports, and other parts required for assembly and connection known to those skilled in the art. A battery according to the invention is a block battery which consists of a plurality of battery cells accommodated in the block box. The battery block case essentially constitutes a receptacle for the electrochemical battery cells, which according to the invention has the desired external dimensions and a desired weight by the attachment of one or more space cells on the outside of one or more side walls. The electrical functionality of the battery requires the electrochemical elements present in the battery block box, which generate current and voltage. It is understood that battery elements accommodated by a battery block box according to the invention may be battery elements known from the prior art.

Further advantages, features and possible applications of the present invention will become apparent from the present description of preferred embodiments and the associated figures. Show it:

1A and 1B a first embodiment of a battery box according to the invention,

2A and 2 B a further embodiment of a battery box according to the invention,

3A and 3B a further embodiment of a battery box according to the invention,

4 a section of a further embodiment of a battery box according to the invention,

5A to 5C a further embodiment of a battery box according to the invention,

6A to 6C a further embodiment of a battery box according to the invention,

7 a further embodiment of a battery block box according to the invention and

8th A further embodiment of a battery block box according to the invention.

1A shows a perspective view of a battery box box 100 obliquely from above, ie with a view towards the open, by a block cover, not shown 3 lockable top of battery box 100 , The battery block case 100 without the space cells arranged on it 5 ' has a substantially cuboid shape with two longer side walls 1 and two shorter sidewalls 1' , At the two shorter side walls 1' are on the outer sides of each two box-shaped space cells 5 ' arranged with a depth T '. The depth T 'of the space cells is in each case the maximum vertical distance parallel to the shorter side wall 1' where the room cell 5 ' is arranged, extending lateral wall 7 the room cell 5 ' , In this embodiment, the distance of the lateral wall 7 the room cell to the side wall 1' to which the room cell is attached, constant. The room cells 5 ' have the same height as the side walls 1' on. This closes at every room cell 5 ' a side wall 7 ' the room cell 5 ' flush with a contact edge between the shorter side wall 1' where the room cell 5 ' is arranged, and one with the shorter side wall 1' in contact longer side wall 1 at. In this embodiment, the space cells 5 ' each in one piece to the side wall 1' formed. At the upper end of the outside of a shorter sidewall 1' is in each case in the area between the two box-shaped space cells attached thereto 5 ' a support element 18 arranged. The two oppositely arranged carrying elements 18 facilitate gripping the battery box box 100 by hand and / or the coupling of corresponding lifting devices, for example by means of a hook, for lifting the battery box 100 , The interior 4 of the battery block box 100 is through two parallel to the shorter side walls 1' arranged shorter partitions 14 ' as well as three parallel to the longer side walls 1 extending longer partitions 14 divided so that twelve equally large indoor cells 15 be formed.

The shape of these interior cells 15 is in 1B clearly showing a top view of the battery case 100 without block cover from above represents. 1B shows that the interior cells 15 are straight cylinders whose floor plans each have the shape of equally sized elongated rectangles. Here are the perpendicular to the bottom plate 2 extending edges, where the side walls 1 and 1' clash, and the edges of the space cells 5 ' rounded. The twelve equal-sized indoor cells 15 are intended to accommodate not pictured components of a battery cell, so that twelve battery cells are formed with the same features. The cells are preferably connected together by appropriate connections. By this embodiment, for example, by means of twelve battery cells, each providing a voltage of 2.0 V, a 24-volt battery can be realized. To close the battery box 100 is a block cover not pictured here 3 provided, which preferably integrally with the cover elements also not shown here 10 the room cells 5 ' is formed, wherein the cover elements, the openings 9 the space cells preferably close liquid-tight.

2A is a perspective view of a battery box box 100 from diagonally above, ie from the same direction as in 1A shown. In 2 B is a top view of the battery box case 100 watch from above. Also in these representations is the block cover 3 of the battery block box 100 Not shown. The in the 2A and 2 B illustrated battery box case 100 is in one piece to the battery block box except for the shape and arrangement of the also in this embodiment 100 molded room cells 5 (respectively. 5 ' ) identical to the embodiment of the 1A and 1B , Apart from the arrangement and shape of the space cells, therefore, this embodiment has already been described above. In the in the 2A and 2 B illustrated embodiment is in each case a box-shaped space cell 5 with a depth T at each of the two longer side walls 1 arranged, with the longer side walls 7 the room cells 5 the same size as the longer side walls 1 , The depth T of the room cells 5 corresponds in each case to the maximum vertical distance of the parallel to the longer side wall 1 at the the space cell 5 is arranged, extending lateral wall 7 the room cell. This embodiment also has two support elements 18 on, centrally at the top of the shorter side walls 1' are arranged.

As in 2 B can be seen from above in the plan view, the two space cells 5 each of the floor plan of an elongated rectangle, which extends over the entire length of the battery box box 100 extends. Analogous to the partitions 14 and 14 ' in the interior 4 of the battery block box 100 can also be in the room cells 5 one or more here not pictured partitions 16 be provided perpendicular to the lateral walls 7 and particularly 7 ' run and the shots 6 the room cells 5 subdivide into a plurality of sub-cells. The perpendicular to the bottom plate 2 extending edges, where the side walls 1 and 1' clash, and the edges of the space cells 5 are rounded. To close the battery box 100 is a block cover not pictured here 3 provided, which preferably integrally with the cover elements also not shown here 10 the room cells 5 is trained. One such element, the battery box case 100 including room cells 5 covering, in this embodiment is essentially a rectangular plate with rounded corners.

In the 3A and 3B are the same views as in the 1A and 1B for yet another embodiment of a battery box box 100 shown. The in the 3A and 3B The embodiment shown essentially represents a combination of the embodiments of FIGS 1 and 2 The illustrated battery block box 100 without attached room cells 5 . 5 ' is essentially identical to the battery box boxes 100 of the 1 and 2 and got up too 1 described in detail.

In the in the 3A and 3B embodiment shown, the battery block box 100 both on the longer side walls 1 as well as on the shorter side walls 1' cubicles 5 . 5 ' on. The each on the longer side walls 1 arranged room cells 5 have the same shape and design as the room cells of the 2 illustrated embodiment. They have a depth T which is the vertical distance between the parallel to the side wall 1 where the room cell 5 is fixed, running lateral wall 7 corresponds to the side wall. Preferably, those at the longer side walls 1 attached room cells 5 the same depth T up. The on the shorter side walls 1' arranged, box-shaped space cells 5 ' each extend over the contact edges of a shorter side wall 1' and a longer side wall 1 out to the contact edge of a shorter side wall 7 ' and a longer side wall 7 one on a longer side wall 1 arranged, box-shaped space cell 5 , The on the shorter side walls 1' arranged room cells 5 ' have a depth T ', as in 1 is defined described. The on the shorter side walls 1' arranged room cells 5 ' In this embodiment, provide an additional connection between one on a longer side walls 1 arranged room cell 5 and the shorter side walls 1' ready. This will increase the stability and rigidity of the entire battery block box 100 additionally increased. In this embodiment, the depths T and T 'are those at the longer and shorter sidewalls 1 . 1' arranged room cells 5 . 5 ' preferably the same. In the room cells 5 . 5 ' can - similar to the partitions 14 and 14 ' in the interior 4 of the battery block box 100 - One or more here not pictured partitions 16 be arranged, which the shots 6 the room cells 5 . 5 ' subdivide into a plurality of sub-cells. This is preferably the room cells 5 that stick to the longer side walls 1 be realized. At least the perpendicular to the bottom plate 2 extending outer edges of the battery box 100 including the room cells 5 . 5 ' are rounded. Also for this embodiment, one of the 1 and 2 described block cover 3 and cover elements 10 be present, which are not shown. It is expedient that the block cover, not shown 3 integral with the cover elements also not shown here 10 the room cells 5 . 5 ' educated.

In 4 is a detail view of a battery box case 100 and in particular a side wall 1 with integrally molded space cell 5 shown from above. The recording 6 the room cell 5 is by several perpendicularly between a side wall 1 and a parallel side wall 7 the room cell 5 arranged partitions 16 divided into a plurality of sub-cells of the same size. The subcells each have the same rectangular floor plan. In this view, it can be clearly seen that in this embodiment, the space cell 5 together with the intermediate walls 16 in one piece to the side wall 1 of the battery block box 100 is formed. With 14 is an intermediate wall inside the battery box, the interior of which 4 divided into indoor cells, which are provided for receiving individual battery cells.

5A shows a battery box case 100 without space cells arranged on it 5 respectively. 5 ' in a perspective view obliquely from above. On a longer side wall 1 of the battery block box 100 are five pairs of mounting sections 11 arranged. Each of the pairs consists of an upper and a lower attachment portion 11 , These attachment sections 11 are each substantially U-shaped with two parallel legs. Here are the attachment sections 11 arranged in such a way that in pairs the two leg tips of an upper mounting portion 11 the leg tips of a lower mounting portion 11 are facing so that the leg tips in pairs on two perpendicular to the bottom plate 2 extending straight lines lie. The upper attachment sections 11 close flush with the top of the longer side panel 1 down while the lower attachment sections 11 from the lower edge of the longer side wall 1 are spaced. Preferably, the longer sidewall not visible in this figure also has five such pairs of mounting portions.

In 5B is the battery block case 100 out 5A in the same view including five box-shaped, in the attachment sections 11 arranged room cells 5 shown. In each case, a room cell 5 of two attachment sections 11 ie one upper and one lower attachment section each 11 , held. The box-shaped room cells 5 each have an opening at their upper ends 9 on. The openings 9 can with cover elements not shown here 10 be closed. For modular room cells 5 this embodiment is preferably for each room cell 5 to close the opening 9 an independent cover element 10 intended to be used when attaching or removing as well as replacing space cells 5 to allow greater flexibility. In each case a lower U-shaped mounting portion 11 grasps the ground in a clamp-like manner 8th a room cell 5 as well as partly the two opposite shorter side walls 7 ' the room cell 5 perpendicular to the outside of a longer sidewall 1 are arranged. The lower attachment section 11 consists of three strips, ie two legs and a connecting strip, each perpendicular to the outside of a longer side wall 1 are arranged and connected in one piece with this. The connecting strip of the lower mounting section 11 forms a support 19 to the room cell 5 , which prevents a displacement of the room cell down. Support 19 lies in a parallel to the plane of the bottom plate in this embodiment 2 extending level. Under each room cell 5 is a support in this embodiment 19 arranged, with the support 19 flush under a section of the ground 8th a room cell is arranged.

The exact structure of the upper attachment sections 11 is in the detail view in 5C shown diagonally from below. In this illustration it can be seen that at the upper end of the longer side wall 1 adjacent side wall 7 the room cell 5 two locking elements 17 as an extension of the side wall 7 are arranged. The legs of the upper U-shaped mounting portions 11 each consist of two perpendicular to a longer side wall 1 standing, parallel to each other vertically downwards extending strips. The two strips are connected by a horizontally extending, central connecting strip. This central connection strip has a recess with opening edge. In this recess is a locking elements 17 a room cell 5 inserted from below. For attachment, the locking elements 17 a shaft with a barb at the free end. A locking element 17 slides when pushing in a recess with the barbs along the opening edges of the recesses along, thereby deforms elastically and locks after passing through the recesses in the space behind the opening edge of the recesses with the help of barbs. This will provide a stable retention connection between the attachment sections 11 on the side walls 1 of the battery block box 100 and the room cells 5 produced.

6A make a battery case 100 without room cells 5 . 5 ' in a perspective view obliquely above. The visible in this representation longer side wall 1 has five perpendicular to the bottom plate 2 running ribs 13 on. The opposite longer side wall, which can not be seen in this view, likewise has five such ribs in this embodiment 13 on. The lower ends of the ribs 13 are by means of a perpendicular to the longer side wall 1 standing horizontally extending connecting bar connected to each other. This connection bar forms a support 19 that under a section of the ground 8th one on the side wall 1 mounted space cell is flush when a space cell not shown in this figure 5 with the help of the ribs on the side wall 1 is arranged. Ribs 13 point in a plan view of the longer side wall 1 an undercut, more specifically, the ribs have a T-shaped profile. In addition, are also on the shorter side wall 1' two such perpendicular to the bottom plate 2 running ribs 13 arranged. On the not visible in this figure shorter side wall are also such ribs 13 arranged.

In 6B is the embodiment of 6A with room cells 5 . 5 ' shown in a perspective view obliquely from above, wherein between each two parallel ribs 13 a room cell 5 or on the side walls 1' a room cell 5 ' is arranged. The between the ribs 13 on the side walls 1 . 1' arranged room cells 5 . 5 ' are box-shaped and have at their upper ends opening 9 on, each by a not shown here cover 10 preferably be closed liquid-tight. It is in contact with the longer side wall 1 standing rearward side wall 7 a room cell 5 over the adjoining side walls 7 ' the room cell 5 extended on both sides. The extensions thereby form engagement sections 12 the room cells 5 in the form of lateral projections, which are complementary to the undercuts of the ribs 13 are formed with T-shaped profile. The engaging sections 12 can form-fit with the undercuts of the ribs 13 contact with T-profile. For this purpose, the space cells 5 with the engaging portions from above each between two ribs 13 as attachment sections 11 pushed in until she got a support 19 the ribs 13 touch and be held by this. In this embodiment, the supports are 19 integral with the mounting portions 11 in the form of ribs 13 connected and run in a plane parallel to the plane of the bottom plate 2 lies. However, embodiments are also conceivable in which the supports 19 in the plane of the bottom plate 2 lie and ultimately a regional extension of the bottom plate 2 represent to the outside and / or not with the attachment sections 11 are connected.

The engaging sections 12 the at the shorter side walls 1' arranged room cells 5 ' have a different shape than the engaging portions 12 the on the longer side walls 1 arranged room cells 5 on. This is especially the case of the viewer from the left front shown on the shorter side wall 1' arranged room cell 5 ' recognizable. This room cell points at the two of the side wall 1' facing edges each have an engagement portion 12 on, which has an L-shaped profile and enters with this L-shaped profile in positive engagement with a rib with T-shaped profile. In this case, the shorter legs of the engagement sections 12 with L-shaped profile on a room cell 5 ' facing away from each other, and the respective longer portions of the engaging portions 12 with L-shaped profile represent an extension of the side wall 7 ' the room cell 5 ' By this configuration is the to the shorter wall 1' facing side wall 7 the room cell 5 ' spaced from this. Due to the spacing, the space cells can be 5 ' over the carrying elements 18 vertically from above into the undercuts of the ribs 13 Push.

6C shows a sectional view of an embodiment that in the 6A and 6B is similar and based on the same principle in a plan view from above. It is a section of a longer side wall 1 with several ribs 13 shown with T-shaped profile. The room cells 5 show on the side walls 7 ' in the area of the sidewall 1 pointing, perpendicular to the bottom plate not shown extending edges each have an engagement portion 12 in the form of a rib having a substantially rectangular cross-section. The rib of rectangular cross-section is designed to fit with the ribs 13 with T-shaped profile on the side wall 1 can engage in positive engagement and by this rib 13 can undercut formed undercut. As described above, the space cells 5 in such an embodiment thereby on the side wall 1 arranged that the space cell 5 with the engaging portions 12 from above into the undercuts of two ribs 13 be inserted with T-shaped profile.

In 7 is a detail view from above on a side wall 1 a further embodiment of a battery block box shown. The side wall has paired ribs 13 with L-shaped profile. In this case, the shorter legs of the L-shaped profiles facing each other in pairs, so that between them a cross-sectionally T-shaped recess is formed. In these T-shaped recesses are complementary engagement sections 12 with T-shaped profiles on a room cell 5 can be inserted in a form-fitting manner. The recording 6 the illustrated room cell 5 is perpendicular to its rear side wall 7 running partitions 16 divided into several sub-cells, each with the same rectangular floor plan. The interior 4 is through the curtain wall 14 and further in this section not visible partitions 14 . 14 ' in several interior cells 15 divided.

8th shows a detail view from above on a side wall 1 Another embodiment of a battery box with modular attachable room cells 5 , In this embodiment, the attachment portions 11 on the side wall 1 as well as the respective associated engagement sections 12 at the room cell 5 tubular shaped. These tubes are arranged in such a way that when such a cell is placed as intended 5 to the battery block case 100 aligned axially aligned with each other and perpendicular to the bottom plate of the battery block box 100 run so that they by means of an unillustrated locking pin for fixing the space cell 5 on the battery box case 100 are connectable, which, when the tubes are arranged in alignment, is introduced into the central openings of the tubes. Also in this embodiment, the recording 6 through perpendicular to its rear lateral wall 7 running partitions 16 divided into several equal sub-cells, and the interior 4 is through the curtain wall 14 and further in this section not visible partitions 14 . 14 ' in several interior cells 15 divided.

For purposes of the original disclosure, it is to be understood that all such features as will become apparent to those skilled in the art from the present description, drawings, and claims, even if concretely described only in connection with certain other features, both individually and separately any combinations with other features and feature groups disclosed herein are combinable, as far as this has not been expressly excluded or technical conditions make such combination impossible or pointless. On the comprehensive, explicit representation of all conceivable combinations of features and the emphasis on the independence of the individual characteristics of each other is omitted here only for the sake of brevity and readability of the description.

LIST OF REFERENCE NUMBERS

1, 1 '

 Sidewall of the battery box box

2

 Bottom plate of the battery box box

3

 Block cover of the battery box box

4

 Interior of the battery box box

5, 5 '

 space cell

6

 Recording the room cell

7, 7 '

 lateral wall of the room cell

8th

 Floor of the room cell

9

 Opening of the room cell

10

 Cover element of the room cell

11

 Attachment section of the battery box box

12

 Engagement section of the room cell

13

 rib

14, 14 '

 Intermediate wall of the battery block box

15

 Interior cell

16

 Partition wall of the room cell

17

 locking element

18

 carrying member

19

 support

100

 Battery pack box

T, T '

Depth of the room cell

Claims (15)

Battery block box ( 100 ) with four side walls ( 1 . 1' ), a bottom plate ( 2 ) and a block lid ( 3 ), the bottom plate ( 2 ) has an upper side and the side walls ( 1 . 1' ) Inside and outsides and through the top of the bottom plate ( 2 ) and the insides of the side walls ( 1 . 1' ) an interior ( 4 ), which up through the block cover ( 3 ) is closable, characterized in that at least one of the interior ( 4 ) facing away from the outside of a side wall ( 1 . 1' ) at least one room cell ( 5 . 5 ' ) which is a receptacle ( 6 ) encloses at least partially and delimits from the environment, so that in the recording ( 6 ) at least one article and / or medium for increasing the weight of the battery block box ( 100 ) can be introduced. Battery block box ( 100 ) according to claim 1, characterized in that the battery block box ( 100 ) on the outsides of opposite side walls ( 1 . 1' ) at least one space cell ( 5 . 5 ' ), preferably on the outsides of all four side walls ( 1 . 1' ). Battery block box ( 100 ) according to one of the preceding claims, characterized in that the at least one room cell ( 5 . 5 ' ) on the outer sides of at least two side walls ( 1 . 1' ) along and around the edge. Battery block box ( 100 ) according to one of the preceding claims, characterized in that the at least one room cell ( 5 . 5 ' ) is substantially box-shaped, with four lateral walls ( 7 . 7 ' ) and a floor ( 8th ), whereby the space cell ( 5 . 5 ' ) at its upper end an opening ( 9 ) having. Battery block box ( 100 ) according to one of the preceding claims, characterized in that in or parallel to the plane of the bottom plate ( 2 ) of the battery block box ( 100 ) at least one integral with a side wall ( 1 . 1' ) related support ( 19 ) from the side wall ( 1 . 1' ) extends to the outside and the at least one support ( 19 ) at least under a portion of the ground ( 8th ) the at least one on the outside of a side wall ( 1 . 1' ) mounted space cell ( 5 . 5 ' ) is flush or support the ground ( 8th ) the at least one on the outside of a side wall ( 1 . 1' ) mounted space cell ( 5 . 5 ' ). Battery block box ( 100 ) according to claim 5, characterized in that the battery block box ( 100 ) for each room cell ( 5 . 5 ' ) at least one support ( 19 ) having. Battery block box ( 100 ) according to one of the preceding claims, characterized in that the at least one room cell ( 5 . 5 ' ) a cover element ( 10 ), by which the receptacle ( 6 ) of the room cell ( 5 . 5 ' ), preferably liquid-tight, is closable. Battery block box ( 100 ) according to one of the preceding claims, characterized in that the block cover ( 3 ) of the battery block box ( 100 ) and the at least one cover element ( 10 ) the at least one room cell ( 5 . 5 ' ) are integrally formed. Battery block box ( 100 ) according to one of the preceding claims, characterized in that the receptacle ( 6 ) of the at least one room cell ( 5 . 5 ' ) has a depth (T, T ') of about 10 mm to about 40 mm, preferably about 15 mm to about 30 mm. Battery block box ( 100 ) according to one of the preceding claims, characterized in that the at least one room cell ( 5 . 5 ' ) on the outside of a side wall ( 1 . 1' ) is integrally formed. Battery block box ( 100 ) according to one of claims 1 to 9, characterized in that the battery block box ( 100 ) on the outside of at least one side wall one or more attachment portions ( 11 ), wherein the at least one spatial cell ( 5 . 5 ' ) in the one or more attachment sections ( 11 ) can be inserted in a form-fitting manner or the room cell ( 5 . 5 ' ) at least one corresponding engagement section ( 12 ), which with at least one attachment portion ( 11 ) on the outside of a side wall ( 1 . 1' ) is connectable. Battery block box ( 100 ) according to claim 11, characterized in that the fastening sections ( 11 ) perpendicular to the bottom plate ( 2 ) running ribs ( 13 ), whereby the battery block box ( 100 ) at least two ribs ( 13 ) on the outside of at least one side wall ( 1 . 1' ) and wherein the ribs ( 13 ) in a plan view of the side wall ( 1 . 1' ) have an undercut and / or a T or L or cross-shaped profile. Battery block box ( 100 ) according to one of the preceding claims, characterized in that the at least one article and / or the at least one medium for increasing the weight of the battery block box ( 100 ) into the recording ( 6 ) at least one of the at least one space cell ( 5 . 5 ' ) is introduced. Battery block box ( 100 ) according to claim 13, characterized in that the at least one article for weight increase has a density of at least 6 g / cm ³ and is preferably a lead weight. Battery containing a battery block box ( 100 ) according to one of claims 1 to 14.

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