CN101907916A - Intelligent protection circuit and method of notebook battery pack - Google Patents
Intelligent protection circuit and method of notebook battery pack Download PDFInfo
- Publication number
- CN101907916A CN101907916A CN2010102095760A CN201010209576A CN101907916A CN 101907916 A CN101907916 A CN 101907916A CN 2010102095760 A CN2010102095760 A CN 2010102095760A CN 201010209576 A CN201010209576 A CN 201010209576A CN 101907916 A CN101907916 A CN 101907916A
- Authority
- CN
- China
- Prior art keywords
- power brick
- controller
- voltage
- current
- electric core
- 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.)
- Pending
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an intelligent protection method of a notebook battery pack, comprising the following steps of: (1) prestoring electrical parameter set valves by using a mainboard controller; (2) acquiring electrical parameters by using the mainboard controller through a battery pack; and (3) comparing the acquired electrical parameters with the prestroed set values by using the mainboard controller, if the electrical parameters are higher than the set values, controlling a notebook to shut down, restart and display the error message of the battery pack. By increasing the protection for the battery pack at the mainboard end of a notebook computer, the method can effectively improve the working safety of the battery pack. The invention also provides an intelligent protection circuit realized by utilizing the method.
Description
Technical field
The invention belongs to the electronic product field, be meant a kind of intelligent protection structure that improves the safety in utilization of Notebook Battery bag especially.
Background technology
Notebook computer is small and exquisite with its volume, be convenient for carrying and enjoy consumer's favor, as everyone knows, the Notebook Battery bag is very important for consumer's use with safely, therefore, design manufacturer and battery design manufacturer for notebook just need very thorough consideration.Design aspect in battery manufacturer depends primarily on power brick fender function design, mainly contain overcharge, cross put, overcurrent and short-circuit protection etc.; Wherein, over-charge protective is meant that the electric core of single-unit surpasses certain voltage value, will shut-off circuit, stop charging; Cross put the protection refer to that the electric core magnitude of voltage of single-unit is lower than certain voltage, will stop the discharge; Overcurrent protection then is meant when discharge current or charging current and surpasses certain value, also will stop discharge.At present, the work of power brick protection mainly still is at the design end of battery business men, and the mainboard end mainly is the work of some cooperations, comprises the setting of charging current, the restriction of discharge current etc.
With reference to shown in Figure 1, be the configuration diagram of relevant power brick, mainboard end in the existing notebook computer, wherein AC/DC power supply 10 is used for external civil power is converted to direct current output, and charging IC 20 is used for Charge Management, the voltmeter size of current of control charging; Power brick 30 is meant the battery that the notebook lock uses, and can be made up of jointly a plurality of electric cores; Controller 40 is embedded controllers in the notebook mainboard, and it is controlling a series of important process such as power-on and power-off, battery management of notebook computer.
Existing notebook computer mostly just is provided with the protection of power brick at the design end, yet all there is the problem that may lose efficacy in any circuit devcie, if setting up charging IC 20 or its peripheral circuit of mainboard end lost efficacy, the voltage of AC/DC power supply 10 might directly be added on the power brick 30 so, Ci Shi security can only depend on how the fender of power brick works so, perhaps, battery design manufacturer and notebook manufacturer will consider the factor of cost, rotate the design of various battery management schemes and battery protecting plate; Even say it, when battery manufacturer design itself existed defective or component failure, if this moment was mainboard end generation problem so, just had very big threat for the security of power brick 30.
By above analysis and hypothesis, carry out initiatively at the mainboard end of notebook computer that protection is necessary as can be known, this case promptly is based on this thought, and the intelligent protection structure that can improve the power brick security is developed in design.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of intelligent protection circuit and method of Notebook Battery bag, can improve the security of power brick work in the notebook computer.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of intelligent protection circuit of Notebook Battery bag comprises being provided with the controller and the power brick of mainboard the AD functional module in its middle controller, and being provided with the managing electric quantity chip in the power brick that this managing electric quantity chip has the SMBUS interface; Controller is connected with power brick, obtains the electrical quantity of power brick, and compares with the setting value that prestores, and the control notebook computer is restarted when surpassing setting value, and shows failure message.
It is poor that above-mentioned electrical quantity comprises the sparking voltage of charging voltage, discharge current, charging current, electric core temperature and the power brick of power brick, electric core, and the AD functional module in its middle controller connects the positive terminal of power brick, obtains the charging voltage of power brick; Controller also connects the SMBUS interface of managing electric quantity chip in the power brick, obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current, electric core temperature and electric core by the SMBUS communication.
It is poor that above-mentioned electrical quantity comprises the sparking voltage of charging voltage, charging current, discharge current, temperature and the power brick of power brick, electric core, and the AD functional module in its middle controller connects the positive terminal of power brick, obtains the charging voltage of power brick; Controller also connects the SMBUS interface of managing electric quantity chip in the power brick, obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current and electric core by the SMBUS communication; The AD functional module of controller is connected with the sense terminal of power brick, one end of one pull-up resistor is connected between the two, the other end connects power supply, and the sense terminal of power brick also is connected with a drop-down thermistor, and controller calculates the temperature of power brick according to the power brick magnitude of voltage that records.
A kind of intelligent protection method of Notebook Battery bag may further comprise the steps:
(1) controller of the mainboard electrical quantity setting value that prestores;
(2) controller of mainboard obtains electrical quantity by power brick;
(3) controller of mainboard compares electrical quantity that obtains and the setting value that prestores, if being higher than the respective settings value then controls the notebook cycle power, and shows the power brick error message.
Above-mentioned electrical quantity comprises that the sparking voltage of charging voltage, discharge current, charging current, electric core temperature and the power brick of power brick, electric core is poor, and the AD functional module in its middle controller is obtained the charging voltage of power brick by the positive terminal of power brick; Controller also obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current, electric core temperature and electric core by the SMBUS interface of managing electric quantity chip in the power brick.
Above-mentioned electrical quantity comprises that the sparking voltage of charging voltage, charging current, discharge current, temperature and the power brick of power brick, electric core is poor, and the AD functional module in its middle controller is obtained the charging voltage of power brick by the positive terminal of power brick; Controller also obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current and electric core by the SMBUS interface of managing electric quantity chip in the power brick; The AD functional module of controller is connected with the sense terminal of power brick, one end of one pull-up resistor is connected between the two, the other end connects power supply, and the sense terminal of power brick also is connected with a drop-down thermistor, and controller calculates the temperature of power brick according to the power brick magnitude of voltage that records.
After adopting such scheme; the present invention utilizes the original device of notebook computer; utilize the various parameters such as charging voltage of the controller detecting power brick of mainboard; and compare with setting value, when surpassing setting value, send information, can effectively predict the running parameter of power brick; on the basis of existing battery-end protection; increase the protection of mainboard end, improve the security of power brick work, eliminate safe hidden trouble.
Description of drawings
Fig. 1 is the configuration diagram of existing notebook computer;
Fig. 2 is the synoptic diagram that obtains the power brick charging voltage among the present invention;
Fig. 3 is the synoptic diagram that obtains power brick sparking voltage, charging and discharging currents and electric core temperature among the present invention;
Fig. 4 is the synoptic diagram that obtains the Notebook Battery temperature among the present invention;
Fig. 5 is the process flow diagram that the controller of mainboard is judged unusually among the present invention;
Fig. 6 is the controller action process flow diagram of exception handler mainboard among the present invention;
Fig. 7 is an exception handler BIOS action flow chart among the present invention.
Embodiment
The invention provides a kind of intelligent protection structure and method of Notebook Battery; it relates generally to the controller 1 and the power brick 2 of mainboard in the existing notebook computer; and has AD functional module 11 in the controller 1; this power brick 2 is made up of some electric cores; and be provided with managing electric quantity chip (as BQ2060) in the power brick 2, particular content of the present invention and technique effect be elaborated below with reference to accompanying drawing.
Disclosed intelligent protection method; mainly comprise three steps: numerical value detecting, unusual judgement, abnormality processing; wherein the numerical value that need detect comprises the sparking voltage of charging voltage, sparking voltage and the electric core of power brick 2, charging current, discharge current and the electric core temperature (also can adopt the temperature of power brick 2) of power brick 2, and the specific implementation process of detecting below with reference to the circuit structure logarithm value is introduced.
At first with reference to shown in Figure 2, be that the present invention realizes the synoptic diagram that the charging voltage numerical value of power brick 2 obtains, be that positive terminal (being the VBat+Pin among Fig. 2) with AD functional module 11 with the power brick 2 of controller 1 is connected, can obtain this moment easily and handle the charging voltage of back power brick 2 via charging IC 3.
Please refer to shown in Figure 3 again, it is SMBUS (System Management Bus) interface that the controller 11 of mainboard 1 is connected the managing electric quantity chip, carry out communication by SMBUS between the two, write down the magnitude of voltage of current power brick 2 and the magnitude of voltage of each electric core owing to have related register in the managing electric quantity chip, therefore controller 1 can pass through the SMBUS communication, reads these magnitudes of voltage; In addition, controller 1 can pass through aforementioned structure, reads the charging current and the discharge current of power brick 2 simultaneously.
When the temperature of power brick 2 is too high, also can influence its operate as normal, therefore the temperature of power brick 2 also is a parameter that needs measurement, obtain temperature herein dual mode can be arranged, a kind of is by structure shown in Figure 3, controller 1 is by the temperature that directly reads electric core in the managing electric quantity chip, another kind then as shown in Figure 4, power brick 2 connects the AD functional module 11 of controller 1 with its sense terminal (being the DETECT pin), connect a pull down resistor R2 at this DETECT pin, and this resistance R 2 is a thermistor, also have the end of a pull-up resistor R1 to be connected between AD functional module 11 and the DETECT pin simultaneously, and the other end of this pull-up resistor R1 connects a power supply; When controller 1 was not connected with power brick 2, the magnitude of voltage that AD functional module 11 detects was supply voltage VCC, and in case controller 1 is connected power brick 2, and the magnitude of voltage that this moment, AD functional module 11 was detected is:
V_R2＝R2*VCC/(R1+R2)
Suppose that the impedance of thermistor R2 and the pass of temperature are:
T＝k*R2+b
The temperature of then current power brick 2 is:
T_battery＝k*R1*V_R2/(VCC-V_R2)+b
This kind mode is by the inside at Notebook Battery bag 2 pull down resistor R2 to be set, by on the DETECT pin of detecting power brick 2 because the change in voltage that the temperature variation of resistance R 2 causes, thereby calculate the temperature of power brick 2.
After obtaining aforementioned each numerical value, controller 1 enters unusual determining program, each numerical value and the setting value that prestores can be compared one by one, cooperate shown in Figure 5 simultaneously, controller 1 judges that at first whether the charging voltage of power brick 2 is greater than the setting value that prestores, when greater than the time enter exception handler, be not more than and whether then continue to compare the sparking voltage difference of power brick and electric core greater than setting value, greater than the time enter exception handler, be not more than the relation that then continues to judge charging current and setting value, proceed discharge current according to this, unusual determining program is finished in the relatively judgement of temperature.
With reference to shown in Figure 6, it is the process flow diagram that controller 1 carries out exception handler, at first controller 1 can be put abnormality processing sign FLAG=1, drag down Power-Button signal forced shutdown then, controller 1 is sent out the Power-Button signal again, system is started shooting once more, simultaneously controller 1 notice BIOS (Basic Input or Output System (BIOS)): this start is the abnormality processing start; Continuation is with reference to Fig. 7, the BIOS information that meeting Read Controller 1 sends when startup self-detection (POST), judge whether abnormality processing information, and when "Yes", stop self check, stop the user to enter operating system, on display screen, show the battery information, remind the user to pull out battery and send and repair, avoid producing bigger potential safety hazard.
Above embodiment only for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought that proposes according to the present invention, and any change of being done on the technical scheme basis all falls within the protection domain of the present invention.
Claims (6)
1. the intelligent protection circuit of a Notebook Battery bag comprises being provided with the controller and the power brick of mainboard the AD functional module in its middle controller, and being provided with the managing electric quantity chip in the power brick that this managing electric quantity chip has the SMBUS interface; It is characterized in that: controller is connected with power brick, obtains the electrical quantity of power brick, and compares with the setting value that prestores, and the control notebook computer is restarted when surpassing setting value, and shows failure message.
2. the intelligent protection circuit of Notebook Battery bag as claimed in claim 1, it is characterized in that: it is poor that described electrical quantity comprises the sparking voltage of charging voltage, discharge current, charging current, electric core temperature and the power brick of power brick, electric core, AD functional module in its middle controller connects the positive terminal of power brick, obtains the charging voltage of power brick; Controller also connects the SMBUS interface of managing electric quantity chip in the power brick, obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current, electric core temperature and electric core by the SMBUS communication.
3. the intelligent protection circuit of Notebook Battery bag as claimed in claim 1, it is characterized in that: it is poor that described electrical quantity comprises the sparking voltage of charging voltage, charging current, discharge current, temperature and the power brick of power brick, electric core, AD functional module in its middle controller connects the positive terminal of power brick, obtains the charging voltage of power brick; Controller also connects the SMBUS interface of managing electric quantity chip in the power brick, obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current and electric core by the SMBUS communication; The AD functional module of controller is connected with the sense terminal of power brick, one end of one pull-up resistor is connected between the two, the other end connects power supply, and the sense terminal of power brick also is connected with a drop-down thermistor, and controller calculates the temperature of power brick according to the power brick magnitude of voltage that records.
4. guard method that utilizes the intelligent protection circuit of Notebook Battery bag as claimed in claim 1 is characterized in that may further comprise the steps:
(1) controller of the mainboard electrical quantity setting value that prestores;
(2) controller of mainboard obtains electrical quantity by power brick;
(3) controller of mainboard compares electrical quantity that obtains and the setting value that prestores, if being higher than the respective settings value then controls the notebook cycle power, and shows the power brick error message.
5. the guard method of Notebook Battery bag as claimed in claim 4, it is characterized in that: described electrical quantity comprises that the sparking voltage of charging voltage, discharge current, charging current, electric core temperature and the power brick of power brick, electric core is poor, and the AD functional module in its middle controller is obtained the charging voltage of power brick by the positive terminal of power brick; Controller also obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current, electric core temperature and electric core by the SMBUS interface of managing electric quantity chip in the power brick.
6. the guard method of Notebook Battery bag as claimed in claim 4, it is characterized in that: described electrical quantity comprises that the sparking voltage of charging voltage, charging current, discharge current, temperature and the power brick of power brick, electric core is poor, and the AD functional module in its middle controller is obtained the charging voltage of power brick by the positive terminal of power brick; Controller also obtains the sparking voltage of the current sparking voltage of power brick, charging current, discharge current and electric core by the SMBUS interface of managing electric quantity chip in the power brick; The AD functional module of controller is connected with the sense terminal of power brick, one end of one pull-up resistor is connected between the two, the other end connects power supply, and the sense terminal of power brick also is connected with a drop-down thermistor, and controller calculates the temperature of power brick according to the power brick magnitude of voltage that records.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102095760A CN101907916A (en) | 2010-06-18 | 2010-06-18 | Intelligent protection circuit and method of notebook battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102095760A CN101907916A (en) | 2010-06-18 | 2010-06-18 | Intelligent protection circuit and method of notebook battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101907916A true CN101907916A (en) | 2010-12-08 |
Family
ID=43263393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102095760A Pending CN101907916A (en) | 2010-06-18 | 2010-06-18 | Intelligent protection circuit and method of notebook battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101907916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926537A (en) * | 2014-04-08 | 2014-07-16 | 可牛网络技术（北京）有限公司 | Obtaining method of electric quantity information and electronic equipment |
| CN110940924A (en) * | 2019-12-17 | 2020-03-31 | 常州格力博有限公司 | Battery pack diagnosis method and battery pack diagnosis device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850134A (en) * | 1997-01-06 | 1998-12-15 | Samsung Electronics Co., Ltd. | Battery-powered equipment automatically detecting battery types |
| US6173350B1 (en) * | 1997-10-17 | 2001-01-09 | Eveready Battery Company Inc. | System and method for writing data to a serial bus from a smart battery |
| CN1368677A (en) * | 2001-02-01 | 2002-09-11 | 宏碁电脑股份有限公司 | Information processing system with debug function on initializing and its method |
| US20030076072A1 (en) * | 2000-01-12 | 2003-04-24 | Masaaki Tojo | Battery pack |
| CN101587972A (en) * | 2009-04-24 | 2009-11-25 | 深圳市先冠电子有限公司 | Double cell control method |
-
2010
- 2010-06-18 CN CN2010102095760A patent/CN101907916A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5850134A (en) * | 1997-01-06 | 1998-12-15 | Samsung Electronics Co., Ltd. | Battery-powered equipment automatically detecting battery types |
| US6173350B1 (en) * | 1997-10-17 | 2001-01-09 | Eveready Battery Company Inc. | System and method for writing data to a serial bus from a smart battery |
| US20030076072A1 (en) * | 2000-01-12 | 2003-04-24 | Masaaki Tojo | Battery pack |
| CN1368677A (en) * | 2001-02-01 | 2002-09-11 | 宏碁电脑股份有限公司 | Information processing system with debug function on initializing and its method |
| CN101587972A (en) * | 2009-04-24 | 2009-11-25 | 深圳市先冠电子有限公司 | Double cell control method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926537A (en) * | 2014-04-08 | 2014-07-16 | 可牛网络技术（北京）有限公司 | Obtaining method of electric quantity information and electronic equipment |
| CN103926537B (en) * | 2014-04-08 | 2017-01-11 | 可牛网络技术（北京）有限公司 | Obtaining method of electric quantity information and electronic equipment |
| CN110940924A (en) * | 2019-12-17 | 2020-03-31 | 常州格力博有限公司 | Battery pack diagnosis method and battery pack diagnosis device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203387203U (en) | Charging switching system possessing USB on-the-go (OTG) function | |
| CN204559175U (en) | A kind of electric automobile charging pile intelligent monitoring and controlling device | |
| CN103838349B (en) | Power supply control system and method thereof | |
| CN103970248B (en) | power management circuit and method and computer system | |
| WO2014139264A1 (en) | Wireless data communications terminal and battery over-temperature detection and protection apparatus thereof | |
| CN105244942A (en) | Charging current control method and mobile terminal | |
| CN107332208A (en) | A kind of protection circuit, mainboard guard method and terminal | |
| TW201520570A (en) | Rechargeable battery temperature detection method, power management device and electronic system | |
| CN100517907C (en) | Method for managing electric quantity of electric power source and replacing battery in hot pluggable condition for portable electronic equipments | |
| CN107104478B (en) | Information processing method and electronic equipment | |
| CN103180744A (en) | Method, apparatus and circuit for detecting super capacitor | |
| CN110611353A (en) | Charging control method and device of intelligent door lock and intelligent door lock | |
| WO2017201737A1 (en) | Battery protecting board, battery, and mobile terminal | |
| CN101907916A (en) | Intelligent protection circuit and method of notebook battery pack | |
| CN102214941A (en) | Power source management system and portable electronic device with same | |
| CN206313492U (en) | A kind of quick charge controls circuit | |
| TWI558058B (en) | Charging system and charging method thereof | |
| CN103257597B (en) | Control method and electronic equipment | |
| CN102222943A (en) | Power management system and portable electronic device with power management system | |
| CN205945119U (en) | Portable power source with load automatic identification function | |
| CN101881988B (en) | Portable computer and charging method thereof | |
| CN108306076A (en) | Battery chamber of data center air-conditioning inter-linked controlling method and system | |
| CN203689508U (en) | Mainboard and computer | |
| CN100489543C (en) | Electric power detecting circuit possessing automatic feedback and overload protection function | |
| CN109617175B (en) | Mobile terminal charger detection control method, mobile terminal and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101208 |