CN102570795A - Vehicle-mounted power supply device and direct current-direct current converter thereof - Google Patents
Vehicle-mounted power supply device and direct current-direct current converter thereof Download PDFInfo
- Publication number
- CN102570795A CN102570795A CN2012100120235A CN201210012023A CN102570795A CN 102570795 A CN102570795 A CN 102570795A CN 2012100120235 A CN2012100120235 A CN 2012100120235A CN 201210012023 A CN201210012023 A CN 201210012023A CN 102570795 A CN102570795 A CN 102570795A
- Authority
- CN
- China
- Prior art keywords
- voltage
- positive pole
- output
- converter
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The embodiment of the invention discloses a direct current-direct current converter which comprises an input stage, an output stage and at least one energy feedback stage, wherein the input stage comprises a first anode and a first cathode; the first anode is used for receiving an input voltage; the output stage comprises a second anode and a third anode; the second anode is coupled with the first anode and is used for outputting an output voltage according to the input voltage; the energy feedback stage is coupled between the input stage and the third anode and is used for feeding local energy outputted by the output stage to the first anode; and the input voltage of the input stage is equal to the sum of the output voltage of the output stage and the voltage of the third anode. The invention also provides a vehicle-mounted power supply device using the direct current-direct current converter. The power conversion efficiency of the direct current-direct current converter is increased, so that the efficiency of the vehicle-mounted power supply device is also increased.
Description
Technical field
The present invention relates to supply unit, relate in particular to vehicular electric power source device and DC-to-dc converter thereof.
Background technology
Existing vehicle-mounted charge machine nearly all is an isolated form, and efficient is roughly about 90%-93%, because it is bigger to disperse heat, must take to force cooling provision.Under water-cooling pattern and the air cooling way, noise, abrasion exist, and the actual life of fan is not long, thereby can further shorten the life-span of full car.So two kinds of conventional types of cooling (air-cooled, water-cooled) of vehicle-mounted charge machine are not the most practical type of cooling.Facts have proved that the natural air cooled operation of vehicle-mounted charge machine is only the most practical type of cooling.But realize natural air cooled operation, the overall power conversion efficiency of vehicle-mounted charge machine must be promoted to more than 96%.
Existing vehicle-mounted charge machine system generally includes two important component parts: the power conversion topologies structure and the DC-to-dc power transforming main circuit of power factor correction (PFC) level.The power conversion topologies structure of PFC level is generally selected the PFC topological structure of two road misphases, continuous mode operation for use, and power conversion efficiency reaches as high as 97%-98% usually.If require the complete machine full load efficiency of vehicle-mounted charge machine to reach more than 96%, then the power conversion efficiency of DC-to-dc power transforming main circuit must also reach 98%-99%.Yet, do not have the power conversion efficiency of the DC-to-dc power transforming main circuit of any isolated form can reach 98%-99% as yet at present.
Summary of the invention
In order to solve the problems of the technologies described above, be necessary to provide a kind of vehicular electric power source device that can make that power conversion efficiency can reach the DC-to-dc converter of 98%-99% and adopt this DC-to-dc converter.
The embodiment of the invention provides a kind of DC-to-dc converter, and this DC-to-dc converter comprises: an input stage, comprise first anodal and first negative pole, and this first positive pole is used to receive an input voltage; An output stage comprises second anodal and the 3rd positive pole, and this second positive pole couples with said first positive pole, is used for exporting an output voltage according to said input voltage; And at least one energy feedback level; Be coupled between said input stage and said the 3rd positive pole; Be used for the portion of energy of output stage output is fed back to said first positive pole, and the input voltage of said input stage equals the voltage sum of the output voltage and said the 3rd positive pole of said output stage.
The embodiment of the invention also provides a kind of vehicular electric power source device, and it comprises: power factor correction module is used to receive mains supply and exports one first output voltage; DC-to-dc converter is used to receive this this first output voltage and is converted into second output voltage, and said first output voltage is greater than said second output voltage; Protective circuit is used for said DC-to-dc converter is carried out overcurrent protection; And control module, be used for controlling the curtage of said power factor correction module, DC-to-dc converter output, with output constant current or constant voltage according to programming signal.This DC-to-dc converter comprises: an input stage, comprise first anodal and first negative pole, and this first positive pole is used to receive said first input voltage; An output stage comprises second anodal and the 3rd positive pole, and this second positive pole couples with said first positive pole, is used for exporting one second output voltage according to said first input voltage; And at least one energy feedback level; Be coupled between said input stage and the said output stage; Be used for the portion of energy of output stage output is fed back to said first positive pole, and first input voltage of said input stage equals the voltage sum of second output voltage and said the 3rd positive pole of said output stage.
The DC-to-dc converter of vehicular electric power source device provided by the invention and employing thereof; Through first positive pole is connected with output stage; And in the energy source feedback unit to the input stage feedback energy, thereby improve the conversion efficiency of DC-to-dc converter and the power conversion efficiency of whole vehicular electric power source device.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the DC-to-dc converter that provides of first embodiment of the invention;
Fig. 2 is the electrical block diagram of the DC-to-dc converter that provides of second embodiment of the invention;
Fig. 3 is the structural representation of the DC-to-dc converter that provides of third embodiment of the invention;
Fig. 4 is the structural representation of the DC-to-dc converter that provides of four embodiment of the invention;
Fig. 5 is the structural representation of the vehicular electric power source device that provides of embodiment of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
In embodiments of the present invention, the input of DC-to-dc converter obtains input voltage from power factor correction (PFC) change-over circuit, and at the output output voltage to load end, feedback energy is to input simultaneously, thereby can improve delivery efficiency.
See also Fig. 1, it is the structural representation of the DC-to-dc converter 100 that provides of first embodiment of the invention.In the present embodiment, said DC-to-dc converter 100 is a non-isolation type variable power device.This DC-to-dc converter 100 comprises an input stage 10, output stage 20 and at least one energy feedback level 30.
Said input stage 10 comprises first anodal 11 and first negative pole 13, and this first positive pole 11 is used to receive an input voltage.In this execution mode, said first anodal 11 receives said input voltage from a power factor correction (PFC) change-over circuit (seeing also Fig. 5), and said input voltage is that a line voltage is converted to through said PFC change-over circuit.
Said output stage 20 is used for according to output voltage of said input voltage output, and said output voltage is less than said input voltage.Said output stage 20 comprises second anodal the 21 and the 3rd positive pole 23, and this second positive pole 21 couples with said first anodal 11, thereby makes said second anodal 21 also can obtain said input voltage.The the said the 3rd anodal 23 connects said energy feedback level 30 1 ends; Make the said output stage 20 of outputing to of a part of said input voltage; Other a part of input voltage then via said the 3rd positive pole 23, is input in the said energy feedback level 30, and forms the energy feedback.
In this execution mode, the quantity of said energy feedback level 30 is one.Said energy feedback level 30 is coupled between said input stage 10 and the said output stage 20.Concrete; Said energy feedback level 30 couples the said the 3rd anodal 23 and one earth terminal 31 on one side; Voltage to import said the 3rd positive pole 23 is realized the energy feedback, and another side then couples said first positive pole 11, said energy is fed back to said input stage 10.Said earth terminal 31 is with said first negative pole, 13 ground connection.
See also Fig. 2, the structural representation of the DC-to-dc converter 200 that it provides for second embodiment of the invention.The DC-to-dc converter 200 of second embodiment and the DC-to-dc converter 100 of first embodiment are basic identical, and its difference is:
Said input stage 10 specifically comprises one first electric capacity 15; Said first electric capacity 15 two ends connect said first anodal 11 and first negative pole 13 respectively; Be that said first electric capacity 15 is connected in parallel in the said input stage 10; Make said first electric capacity, 15 voltage equal said input voltage, thereby can the energy of said input voltage be stored, and export in the said output stage 20.In the present embodiment, said first electric capacity 15 is an electrochemical capacitor.
Said output stage 20 comprises one second electric capacity 25; Said second electric capacity 25 two ends connect said second the anodal the 21 and the 3rd anodal 23 respectively; Be that said second electric capacity 25 is connected in parallel in the said output stage 20; Make said second electric capacity, 25 voltage equal said output voltage, thereby can the energy of said output voltage be stored, and export load end (figure does not show) to.In the present embodiment, said second electric capacity 25 is an electrochemical capacitor.
Said energy feedback level 30 comprises an input part 33, a change-over circuit 35 and an efferent 37.Said input part 33 couples said the 3rd positive pole 23 and said earth terminal 31, is used to receive the energy from the said input voltage of part of said output stage 20 acquisitions.Said efferent 37 couples said first positive pole 11 and said first negative pole 13, is used for being fed back to said input stage 10 through the energy behind the said change-over circuit 35.Said change-over circuit 35 is used to receive the energy of said input part 33, and with outputing to this first positive pole 11 from this efferent 37 after this power conversion.Concrete; Said change-over circuit 35 comprises one the 3rd electric capacity 351, one the 4th electric capacity 353, a switch 355, a diode 357 and an inductance 359; Said the 3rd electric capacity 351, the 4th electric capacity 353 and switch 355 are parallel with one another; Said diode 357 is connected between said the 3rd electric capacity 351 and the switch 355, and said inductance 359 is connected between said the 4th electric capacity 353 and the switch 355.
Concrete, said the 3rd electric capacity 351 comprises the 4th anodal 351a and the 3rd negative pole 351b, it is used to receive the said the 3rd anodal 23 voltage, and charges.
Said the 4th electric capacity 353 comprises the 5th anodal 353a and the 4th negative pole 353b, and the said the 5th anodal 353a and said the 3rd negative pole 351b are connected in said earth terminal 31 jointly.
In the present embodiment, said switch 355 is an insulated gate bipolar transistor.Said switch 355 comprises grid, emission collection and collector electrode, and said grid connects an external control signal (figure does not show), and said emission collection connects said earth terminal 31, and said collector electrode is connected between said diode 357 and the inductance 359.
The positive pole of said diode 357 connects said inductance 359, and the negative pole of said diode 357 connects the 4th negative pole 353b and first anodal 11 of said the 4th electric capacity 353.
Said inductance 359 1 ends connect the 4th anodal 351a of said the 3rd electric capacity 351, and an other end connects the collector electrode of said insulated gate bipolar transistor and the positive pole of said diode 357.
The conversion efficiency of said DC-to-dc converter 100 satisfies formula:
η=C1+W*C2，（1）
Wherein, η is a conversion efficiency; C1 is the percentage that the output voltage of said output stage 20 accounts for the input voltage of input stage 10, and C2 is the percentage that the 3rd anodal 23 voltage accounts for the input voltage of input stage 10, W be the 3rd anodal 23 voltage after through said energy feedback level 30 loss factor.Said formula (1) obtains from formula:
η=Iout*Vpfc*C1+W*Iout*Vpfc?*C2 （2）
Wherein, Iout is the electric current of DC-to-dc converter 100 of flowing through, and Vpfc is the output voltage of said PFC change-over circuit 35, i.e. the input voltage of input stage 10.
In conjunction with Fig. 3 and above-mentioned formula, when being reference point of potential with earth terminal 31, the input voltage of input stage 10 is substantially equal to the voltage of said second positive pole 21 and the 3rd anodal 23 voltage sum, that is:
Vpfc=Vdco+?V
EFin，（3）
Wherein Vdco is the output voltage of DC-DC converter output stage 20, i.e. second anodal 21 voltage, V
EFinVoltage for the said the 3rd anodal 23, the input voltage of promptly said energy feedback level 30.
Can get V by (3)
EFin=Vpfc – Vdco (4)
(4) substitution (2) can be calculated efficiency eta.For example, work as V
EFinAccount for 20% o'clock of Vpfc, the gross efficiency of DC-DC converter is:
(Iout*0.8*Vpfc+95%*Iout*20%*Vpfc）/(Io*?Vpfc)=99%;
Work as V
EFinAccount for 40% o'clock of Vpfc, the gross efficiency of DC-DC converter is:
(Io*0.8*?VPFC?+95%*?Io*40%*?VPFC）/(Io*?VPFC)=98%。In the ordinary course of things, because V
EFinTherefore the percentage that accounts for Vpfc can be controlled in 0 ~ 50% scope, can efficiency eta be limited in 97% ~ 99% the scope, thereby can improve the power conversion efficiency of DC-to-dc converter 100.
See also Fig. 3, the structural representation of the DC-to-dc converter 300 that it provides for third embodiment of the invention.The DC-to-dc converter 300 of the 3rd embodiment and the DC-to-dc converter 200 of second embodiment are basic identical; Its difference is: the quantity of said energy feedback level 30a is a plurality of, and these a plurality of energy feedback level 30a are connected in parallel between the said the 3rd anodal 23a and the first anodal 11a successively.
See also Fig. 4, the structural representation of the DC-to-dc converter 400 that it provides for fourth embodiment of the invention.The DC-to-dc converter 400 of the 4th embodiment and the DC-to-dc converter 200 of second embodiment are basic identical; Its difference is: the quantity of said energy feedback level 30b is a plurality of, and these a plurality of energy feedback level 30b are connected between the said the 3rd anodal 23b and the first anodal 11b.
It is the mode of Multiphase Parallel or series operation that DC-to-dc converter of the present invention is not subject to a plurality of energy feedback levels, as frequency inphase operation or with misphase operation frequently or independent operating or look condition operation such as watt level and all can separately.
See also Fig. 5, the structural representation of the vehicular electric power source device 500 that it provides for embodiment of the present invention.This vehicular electric power source device 500 comprises power factor correction (PFC) module 51, above-mentioned DC-to-dc converter, protective circuit 53 and control module 55.
Said power factor correction module 51 is used to reduce input current harmonics and exports one first output voltage, and said first output voltage equals the input voltage of said input stage 10.
Said DC-to-dc converter is above-mentioned DC-to-dc converter 100,200,300 or 400.
Said protective circuit 53 is used for said DC-to-dc converter is carried out overcurrent protection.
Said control module 55 is used for controlling according to programming signal the curtage of said power factor correction module 51, DC-to-dc converter output, with output constant current or constant voltage.In this execution mode, said control module 55 is digital signal processor (DSP) or analog control circuit.In addition, this vehicular electric power source device 500 also is provided with a standby power 57, and it connects said control module 55, with clock power that control module 55 is provided and the control power supply when vehicular electric power source device 500 is in holding state.
Vehicular electric power source device 500 provided by the invention and the DC-to-dc converter that adopts thereof; Through being connected with output stage 20 with first anodal 11; And at the voltage of energy feedback level 30 to input stage 10 feedbacks the 3rd anodal 23; Higher input voltage be can obtain, thereby the conversion efficiency of DC-to-dc converter 100 and the power conversion efficiency of whole vehicular electric power source device 500 improved.
Above disclosedly be merely a kind of preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (9)
1. a DC-to-dc converter is characterized in that, this DC-to-dc converter comprises:
An input stage comprises first anodal and first negative pole, and this first positive pole is used to receive an input voltage;
An output stage comprises second anodal and the 3rd positive pole, and this second positive pole couples with said first positive pole, is used for according to output voltage of said input voltage output; And
At least one energy feedback level; Be coupled between said input stage and said the 3rd positive pole; Be used for the portion of energy of output stage output is fed back to said first positive pole, and the input voltage of said input stage equals the voltage sum of the output voltage and said the 3rd positive pole of said output stage.
2. DC-to-dc converter as claimed in claim 1 is characterized in that: said input stage comprises one first electric capacity, and the said first electric capacity two ends connect said first anodal and first negative pole respectively, and the said first electric capacity voltage equals said input voltage.
3. DC-to-dc converter as claimed in claim 1 is characterized in that: said output stage comprises one second electric capacity, and the said second electric capacity two ends connect said second anodal and the 3rd positive pole respectively, and the said second electric capacity voltage equals said output voltage.
4. DC-to-dc converter as claimed in claim 1 is characterized in that: the quantity of said energy feedback level is a plurality of, and these a plurality of energy feedback levels are parallel with one another between said the 3rd positive pole and first positive pole.
5. DC-to-dc converter as claimed in claim 1 is characterized in that: the quantity of said energy feedback level is a plurality of, and these a plurality of energy feedback levels are connected between said the 3rd positive pole and first positive pole.
6. like claim 4 or 5 described DC-to-dc converters; It is characterized in that: each said energy feedback level comprises an input, a change-over circuit and an output; Said input couples said the 3rd positive pole; Said output couples said first positive pole, and said change-over circuit is used to receive the energy of said input, and with outputing to this first positive pole from this output after this power conversion.
7. DC-to-dc converter as claimed in claim 4; It is characterized in that: said change-over circuit comprises one the 3rd electric capacity, the 4th electric capacity, a switch, a diode and an inductance; Said the 3rd electric capacity, the 4th electric capacity and switch are parallel with one another; Said diode is connected between said the 3rd electric capacity and the switch, and said inductance is connected between said the 4th electric capacity and the switch.
8. DC-to-dc converter as claimed in claim 1 is characterized in that: the conversion efficiency of said DC-to-dc converter satisfies formula:
η=C1+W*C2, wherein, η is a conversion efficiency, C1 is the percentage that output voltage accounts for input voltage, C2 is the percentage that the 3rd anodal voltage accounts for input voltage, W be the 3rd anodal voltage after through said energy feedback level loss factor.
9. vehicular electric power source device, it comprises:
Power factor correction module is used to receive mains supply and exports one first output voltage;
DC-to-dc converter is used to receive this first output voltage and is converted into one second output voltage, and said first output voltage is greater than said second output voltage;
Protective circuit is used for said DC-to-dc converter is carried out overcurrent protection; And
Control module is used for controlling according to programming signal the curtage of said power factor correction module, DC-to-dc converter output, with output constant current or constant voltage;
It is characterized in that this DC-to-dc converter comprises:
An input stage comprises first anodal and first negative pole, and this first positive pole is used to receive said first input voltage;
An output stage comprises second anodal and the 3rd positive pole, and this second positive pole couples with said first positive pole, is used for exporting one second output voltage according to said first input voltage; And
At least one energy feedback level; Be coupled between said input stage and said the 3rd positive pole; Be used for the portion of energy of output stage output is fed back to said first positive pole, and first input voltage of said input stage equals the voltage sum of second output voltage and said the 3rd positive pole of said output stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210012023.5A CN102570795B (en) | 2012-01-16 | 2012-01-16 | Vehicular electric power source device and DC-to-DC converter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210012023.5A CN102570795B (en) | 2012-01-16 | 2012-01-16 | Vehicular electric power source device and DC-to-DC converter thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102570795A true CN102570795A (en) | 2012-07-11 |
| CN102570795B CN102570795B (en) | 2016-04-06 |
Family
ID=46415447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210012023.5A Active CN102570795B (en) | 2012-01-16 | 2012-01-16 | Vehicular electric power source device and DC-to-DC converter thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102570795B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4695936A (en) * | 1986-02-07 | 1987-09-22 | Astec Components, Ltd. | Switching mode power supply start circuit |
| CN1462107A (en) * | 2002-05-30 | 2003-12-17 | Nec东金株式会社 | Mixed power-supply system |
| CN2857331Y (en) * | 2005-11-25 | 2007-01-10 | 左宗来 | Vehicle power source of notepad computer |
| JP2010119176A (en) * | 2008-11-12 | 2010-05-27 | Mitsubishi Electric Corp | On-vehicle power supply apparatus |
| CN202435265U (en) * | 2012-01-16 | 2012-09-12 | 深圳市欣锐特科技有限公司 | Vehicle-mounted power supply device and direct current-direct current (DC-DC) converter thereof |
-
2012
- 2012-01-16 CN CN201210012023.5A patent/CN102570795B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4695936A (en) * | 1986-02-07 | 1987-09-22 | Astec Components, Ltd. | Switching mode power supply start circuit |
| CN1462107A (en) * | 2002-05-30 | 2003-12-17 | Nec东金株式会社 | Mixed power-supply system |
| CN2857331Y (en) * | 2005-11-25 | 2007-01-10 | 左宗来 | Vehicle power source of notepad computer |
| JP2010119176A (en) * | 2008-11-12 | 2010-05-27 | Mitsubishi Electric Corp | On-vehicle power supply apparatus |
| CN202435265U (en) * | 2012-01-16 | 2012-09-12 | 深圳市欣锐特科技有限公司 | Vehicle-mounted power supply device and direct current-direct current (DC-DC) converter thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102570795B (en) | 2016-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103166239B (en) | Centralized-distributed mixed novel energy power generation system and maximum power point tracking control method | |
| CN103633842B (en) | A kind of Single switch oppositely exports secondary molded breadth gain changer | |
| CN101917017A (en) | Single-stage boosting/reducing energy storage type photovoltaic grid-connected power generation control system | |
| CN103023362A (en) | Bridgeless inverter circuit and solar bridgeless inverter | |
| CN104113073A (en) | New energy power generation system and distributed mixing maximum power tracking method | |
| TWI276298B (en) | Recycle energy DC power supply with grid-connected function | |
| CN204290416U (en) | A kind of multiple-energy-source emergency power supply system | |
| CN201290070Y (en) | Extra-high voltage DC generator | |
| CN202424546U (en) | Extra high voltage DC high voltage generator having high stability | |
| CN105792438B (en) | A kind of buck single-stage LED drive circuit of unity power factor | |
| CN103904638A (en) | Direct-current distributed load system based on three-port converter and control method thereof | |
| CN103746548B (en) | A kind of Multi-functional analog power supply for the grid-connected detection of distributed power source | |
| CN102709976A (en) | Common bus energy-saving recovery type storage battery charging-discharging power supply equipment | |
| CN102223136A (en) | Non-energy-storing motor-driven system for complementary power supply of wind power generation and electrical network | |
| CN202435265U (en) | Vehicle-mounted power supply device and direct current-direct current (DC-DC) converter thereof | |
| CN203151175U (en) | A solar-energy portable emergency power supplying system | |
| CN102665327B (en) | Light-emitting diode power supply for illumination without transformer | |
| CN102570795B (en) | Vehicular electric power source device and DC-to-DC converter thereof | |
| US20180083453A1 (en) | Power converting module, power generating system, and control method thereof | |
| CN202435292U (en) | Alternating current-direct current converter | |
| CN102684284A (en) | Portable mobile power supply based on small off-grid wind power generation | |
| CN206164198U (en) | Lithium cell power conversion unit | |
| CN111030221A (en) | Charger power supply system and charger | |
| CN104362702A (en) | Power supply system of transformer substation | |
| CN204835917U (en) | Power based on IGBT connection in series -parallel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park C1 building 14 floor Applicant after: Shenzhen Shinry Technology Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Xili town honghualing industrial district A4 building six floor, East Wing Applicant before: Shenzhen Shinry Technolgies Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |