CN101789609A - Battery equalization system, method and circuit - Google Patents
Battery equalization system, method and circuit Download PDFInfo
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- CN101789609A CN101789609A CN 200910001193 CN200910001193A CN101789609A CN 101789609 A CN101789609 A CN 101789609A CN 200910001193 CN200910001193 CN 200910001193 CN 200910001193 A CN200910001193 A CN 200910001193A CN 101789609 A CN101789609 A CN 101789609A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims description 16
- 238000005070 sampling Methods 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 12
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The invention discloses battery equalization system, method and circuit. The battery equalization system comprises at least two battery modules and a controller connected with the battery modules. Each battery module comprises a battery, an equalization circuit and a battery management module. The battery management module is connected with the battery and is used for acquiring the battery voltage of the battery. The equalization circuit is connected with the battery and is used for equalizing the battery under the control of the battery management module. The controller is used for generating a reference signal on the basis of the battery voltage provided by the battery modules. The battery management module in each battery module controls the equalization circuit to equalize the battery according to the reference signal so as to obtain the battery equalization of the battery modules. The invention can increase the efficiency of the battery system and reduce power consumption.
Description
Technical field
The present invention relates to the management of battery system, refer to the system and method for balancing battery especially.
Background technology
The battery balanced battery pack that is used to comprise a plurality of batteries.If unbalanced words between the battery, because the capacity of the most weak meeting decision whole battery group in the series connected battery, at this moment the capacity of battery pack will reduce.When the difference between cell voltage during greater than certain level, battery is unbalanced will to be taken place.In battery system, the information of battery can be measured by the circuit of chip or printed circuit board (PCB).According to measurement result, the battery management circuit can be controlled battery balanced.In comprising the big relatively battery management system of a plurality of battery modules, the equilibrium of battery can be carried out in each battery module.
Fig. 1 is the existing structural representation that is used for battery balanced existing system 100.System 100 comprises the battery module 182 and 184 of similar.Battery module 182 comprises battery 102 and 104, battery equalizing circuit 122 and 124, battery voltage sampling circuit 132,134,136 and 138, module equalizing circuit 112 and battery management module 162.Battery module 184 comprises battery 106 and 108, battery equalizing circuit 126 and 128, battery voltage sampling circuit 142,144,146 and 148, module equalizing circuit 114 and battery management module 166.
The voltage of battery voltage sampling circuit 132,134,136 and 138 monitoring batteries 102 and 104.Battery management module 162 obtains the voltage that samples and therefrom chooses a reference voltage (such as minimum voltage) from battery voltage sampling circuit 132,134,136 and 138.Battery management module 162 can compare respectively reference voltage and the voltage that samples.If battery management module 162 detects reference voltage and the cell voltage that samples, 102 or 104 cell voltage for example, the difference between it is during greater than predetermined threshold, and battery management module 162 can the control battery equalizing circuits be shunted the electric current of this battery.Like this, according to reference voltage, battery 102 and 104 voltage can obtain equilibrium in battery module 182.Battery 106 and 108 voltage can pass through the similarity method equilibrium.
In system 100, battery module 182 and 184 is only being done equilibrium in the module separately.If imbalance takes place between battery module 182 and 184, module equalizing circuit 112 and 114 can only be used for the electric current shunting of entire cell module 182 or 184.Yet in this case, the efficient of battery system will reduce.And for battery balanced and make that the electric current of entire cell module is shunted, power consumption also can increase like this.
Summary of the invention
The invention provides a kind of battery equalization system, this battery equalization system comprises: at least two battery modules and the controller that connects between described battery module.Each described battery module comprises battery, equalizing circuit and battery management module.Described battery management module is connected the cell voltage that is used to obtain described battery with described battery.Described equalizing circuit is connected with described battery and is used under the control of described battery management module described battery being carried out equilibrium.Described controller is used for producing reference signal based on the described cell voltage that described battery module provides.Wherein the battery management module in each described battery module is controlled described equalizing circuit and according to described reference signal described battery is carried out equilibrium, obtains the battery balanced of described battery module with this.
Battery equalization system of the present invention, described battery module further comprise the voltage sampling circuit that is connected between described battery and the described battery management module, and described voltage sampling circuit is used to detect described cell voltage.
Battery equalization system of the present invention, described reference signal refer to the minimum voltage value of the described cell voltage that described each battery module provides.
Battery equalization system of the present invention, described controller receives described cell voltage from described battery module, and more described cell voltage is to produce described reference signal.
Battery equalization system of the present invention, described controller receives the minimum cell voltage of battery module respectively, and more described minimum cell voltage is to produce described reference signal.
Battery equalization system of the present invention, the described battery management module in the described battery module comprises single-chip microcomputer, the cell voltage of each battery that is used for more described battery module is to produce described minimum cell voltage.
Battery equalization system of the present invention, described controller produces balanced control signal and offers described battery module based on described reference signal.
Battery equalization system of the present invention, described balanced control signal decision is performed the battery of described equilibrium.
Battery equalization system of the present invention, described battery module receives described reference signal, and is performed the battery of described equilibrium based on described reference signal decision.
Battery equalization system of the present invention will be performed the voltage of described battery of described equilibrium and the difference of described reference signal and surpass preset threshold value.
Battery equalization system of the present invention, described controller is connected by the described battery module of communication bus and each.
The present invention also provides a kind of battery balanced method that is used between at least two battery modules, and each described battery module comprises battery, and described battery balanced method comprises: the cell voltage of the described battery of monitoring in each described battery module; Relatively the cell voltage of all battery modules is to produce reference signal; Based on described reference signal, in battery module, specify to be performed balanced battery; With carry out described equilibrium in the battery of appointment, in battery module, obtain battery balanced with this.
The step that the battery balanced method that is used between at least two battery modules of the present invention, described appointment are performed balanced battery comprises: the voltage of the cell voltage of more described battery and described reference signal respectively; With when the voltage difference that relatively obtains exceeds preset threshold value, the battery that decision is compared is the battery of described appointment.
The battery balanced method that is used between at least two battery modules of the present invention is carried out described equilibrium and is comprised in the step of the battery of appointment: drives battery equalizing circuit based on described reference signal; With utilize described battery equalizing circuit and shunt the electric current of the battery of described appointment.
The battery balanced method that is used between at least two battery modules of the present invention, described reference signal refers to the minimum voltage value of the described cell voltage that each described battery module provides.
The present invention also provides a kind of battery equalizing circuit that is used between balanced at least two battery modules, and described battery module comprises battery, and described battery equalizing circuit comprises battery management module, equalizing circuit and the controller that connects between described battery module.Described battery management module is used for being connected to monitor the cell voltage of battery described in the described battery module with each battery.Described equalizing circuit is used for being connected under the control of described battery management module described battery is carried out with each described battery balanced.Described controller is used for producing reference signal based on the described cell voltage that described battery module provides.Wherein the battery management module in each described battery module is controlled described equalizing circuit and according to described reference signal described battery is carried out equilibrium, obtains the battery balanced of described battery module with this.
The battery equalizing circuit that is used between balanced at least two battery modules of the present invention, described controller receives described cell voltage from described battery module, and more described cell voltage is to produce described reference signal.
The battery equalizing circuit that is used between balanced at least two battery modules of the present invention, described controller receives the minimum cell voltage of described battery module respectively, and more described minimum cell voltage is to produce described reference signal.
The battery equalizing circuit that is used between balanced at least two battery modules of the present invention, described controller is connected by the described battery module of communication bus and each.
The present invention can improve the efficient of battery system, and reduces power consumption.
Description of drawings
Fig. 1 is the structural representation that is used for battery balanced existing system;
Fig. 2 is the structural representation of battery equalization system according to an embodiment of the invention;
Fig. 3 is the structural representation of battery equalization system according to another embodiment of the present invention;
Fig. 4 is the flow chart of battery balanced method according to one embodiment of present invention.
Embodiment
Below, can further understand purpose of the present invention, specific structural features and advantage by to the description of some embodiments of the present invention in conjunction with its accompanying drawing.
The present invention's conjunction with figs. hereinafter describes comprehensively.The present invention may implement in some different modes, is restricted to certain concrete 26S Proteasome Structure and Function of introducing in the specification but should not be construed as the present invention.And should understand description that specification provides can be fully, the scope of passing on the present invention to contain to those skilled in the art fully.Based on the description of specification, those skilled in the art should recognize all embodiments of the present invention that scope of the present invention is intended to contain here and is disclosed, and independently implements or implements in conjunction with other embodiments of the present invention.Such as, utilize the embodiment of any amount that proposes to realize a device or carry out a kind of method here.In addition, scope of the present invention also comprises a kind of like this device or method.This device or method can realize with other structure, function, or utilize embodiment and other 26S Proteasome Structure and Functions that the present invention proposes to realize together here, again or with the 26S Proteasome Structure and Function realization that is different from the embodiment that the present invention proposes here.Should be understood that all embodiments of the present invention of announcement can be implemented by the one or more elements in the claim here.
Fig. 2 is the structural representation of battery equalization system 200 according to an embodiment of the invention.In the embodiment of Fig. 2, battery equalization system 200 comprises battery module 282 and 284, and controller, such as central electronic control unit (central electriccontrol unit CECU) 280.According to different application, battery equalization system 200 can comprise any amount of battery module.In one embodiment, battery module 282 and 284 is to illustrate.
In one embodiment, battery module 282 comprises battery 202 and 204, battery equalizing circuit 222 and 224, battery voltage sampling circuit 232,234,236 and 238 and battery management module 262.In one embodiment, battery module 284 comprises battery 206 and 208, battery equalizing circuit 226 and 228, battery voltage sampling circuit 242,244,246 and 248 and battery management module 272.According to different application, battery module 282 and 284 can comprise any amount of battery.The similar of the structure of battery module 282 and battery module 284.
In one embodiment, battery management module 262 links to each other with 204 with battery 202, and comprises battery balanced driver 264 and single-chip microcomputer 266.Battery management module 262 can be protection, the monitoring integrated circuit that is used to manage such as the battery pack of lithium ion battery, Ni-MH battery.Battery management module 262 can be with the voltage of cyclic pattern by battery voltage sampling circuit 232,234,236 and 238 monitoring batteries 202 and 204.Battery management module 262 is periodically monitored the voltage of battery 202 and 204 with predetermined scanning frequency.In monitoring periods, voltage is measured one by one.In one embodiment; battery management module 262 is except measuring the voltage of battery 202 and 204; the monitoring charge and discharge electric current that can also continue and the temperature of battery pack and battery unit; so that defencive function to be provided, include but not limited to the safeguard protection of overvoltage, under-voltage, overcurrent, short circuit, high temperature, low temperature.
By the voltage of monitoring battery 202 and 204, battery management module 262 can obtain the information of cell voltage.Equally, battery management module 272 also can obtain the cell voltage of battery 206 and 208.In one embodiment, battery 202,204,206 and 208 cell voltage is sent to CECU 280 by communication bus 286.Communication bus 286 can be CAN, I
2Bus well known in the art such as C.Communication bus 286 can transmit different types of signal, such as voltage signal and control signal.CECU 280 compares and produces a reference signal with the cell voltage of receiving.In one embodiment, reference signal is a battery 202,204,206 and 208 minimum voltage value Vmin.Represent the reference signal of minimum voltage value Vmin to be fed to battery management module 262 and 272 by communication bus 286.
In another embodiment, in order to reduce the load of communication bus 286, battery management module 262 (272) will represent that the signal of the minimum cell voltage of battery module 282 (284) sends to CECU 280 by communication bus 286.Single-chip microcomputer 266 compares and obtains the minimum cell voltage of battery module 282 to the magnitude of voltage of each battery in battery module 282 inside according to battery balanced algorithm.Battery balanced algorithm can be stored in the battery management module 262.Similarly, battery management module 272 also can compare and obtain the minimum cell voltage of battery module 284 in battery module 284 inside to the magnitude of voltage of each battery.Accordingly, the signal of pilot cell module 282 and 284 minimum cell voltage is sent to CECU 280 by communication bus 286.In addition, when unusually or situation about not expecting when taking place, communication bus 286 can also be kept apart CECU 280 with battery module 282 and 284.280 pairs of battery management module 262 of CECU and 272 minimum cell voltage of sending compare, and produce reference signal.In this case, this reference signal is a battery 202,204,206 and 208 minimum voltage value Vmin.
Single-chip microcomputer 266 in the battery management module 262 and the single-chip microcomputer 276 in the battery management module 272 compare the voltage of each battery and minimum voltage Vmin to decide which battery are carried out equilibrium.In one embodiment, single-chip microcomputer 266 or the 276 battery balanced algorithms of carrying out can define preset threshold value Δ V.In another embodiment, preset threshold value Δ V can be provided with by the user.If the difference of the cell voltage of minimum voltage Vmin and certain battery exceeds preset threshold value Δ V, this battery will be performed battery balanced.
Such as, battery balanced if battery 202 is carried out by decision, battery balanced driver 264 will start the electric current shunting of battery equalizing circuit 222 with battery 202.Similarly, battery equalizing circuit 224 can be driven with the electric current shunting with battery 204 by battery balanced driver 264.Battery balanced driver 274 can drive battery equalizing circuit 226 and 228 respectively for battery 206 and 208.
In a word, in one embodiment, battery equalization system 200 can carry out equilibrium to battery based on same reference signal.Specifically, by comparing the cell voltage of battery modules different in the battery equalization system 200, CECU 280 can be battery balanced to carry out for each battery module generation reference voltage signal.Therefore, utilize same reference signal, can obtain battery balanced between different battery modules.
Fig. 3 is the structural representation of battery equalization system 300 according to another embodiment of the present invention.
In one embodiment, battery equalization system 300 comprises battery module 382 and 384, and central electronic control unit (central electric control unit CECU) 380.In one embodiment, battery module 382 comprises battery 302 and 304, battery equalizing circuit 322 and 324, battery voltage sampling circuit 332,334,336 and 338, and battery management module 362.Battery module 384 comprises battery 306 and 308, battery equalizing circuit 326 and 328, battery voltage sampling circuit 342,344,346 and 348, and battery management module 372.Battery module 382 and battery module 384 similar.
In one embodiment, battery management module 362 links to each other with 304 with battery 302, and comprises battery balanced driver 364.Battery management module 362 can be protection, the monitoring integrated circuit that is used for administration battery pack.Battery management module 362 can be by the voltage of battery voltage sampling circuit 332,334,336 and 338 monitoring batteries 302 and 304.In one embodiment; battery management module 362 is except measuring the voltage of battery 302 and 304; the monitoring charge and discharge electric current that can also continue and the temperature of battery pack and battery unit, so that different defencive functions to be provided, the safeguard protection of for example overvoltage, under-voltage, overcurrent, short circuit, high temperature, low temperature.
By monitoring battery 302 and 304 voltage, battery management module 362 can send to CECU 380 with the information of the cell voltage that obtains.Equally, battery management module 372 also can obtain the cell voltage of battery 306 and 308 and send to CECU 380.CECU380 links to each other with 372 with battery management module 362 by communication bus 386.Communication bus 386 can transmit different types of signal, such as voltage signal and control signal.In addition, when unusually or situation about not expecting when taking place, communication bus 386 can also be kept apart CECU380 and battery module 382 and 384.
Comprise that the CECU 380 of battery balanced algorithm obtains the cell voltage of battery 302,304,306 and 308 from battery management module 362 and 372.Utilize battery balanced algorithm, 380 pairs of batteries of CECU 302,304,306 and 308 cell voltage compare, and produce a reference signal.In one embodiment, reference signal refers to the minimum voltage Vmin of all batteries in battery module 382 and 384.CECU 380 further compares the cell voltage of minimum voltage Vmin and each battery 302,304,306 and 308 respectively.If the difference of the cell voltage of minimum voltage Vmin and certain battery exceeds preset threshold value Δ V, this battery will be performed battery balanced.In one embodiment, battery balanced algorithm can define preset threshold value Δ V.In another embodiment, preset threshold value Δ V can be provided with by the user.Such as, if the difference of the voltage of battery 302 and minimum voltage Vmin exceeds preset threshold value Δ V, CECU 380 produces a control signal and sends to battery management module 362 by communication bus 386.Be the control signal that response CECU 380 sends, the battery balanced driver 364 in the battery management module 362 drives the electric current shunting of battery equalizing circuit 322 with battery 302.
Fig. 4 is the flow chart 400 of battery balanced method according to one embodiment of present invention.Fig. 4 describes in conjunction with Fig. 2.
In step 402, the cell voltage of battery is monitored by battery management module.Such as, battery 202,204,206 in the battery module 282 and 284 and 208 cell voltage are monitored.For example battery management module 262 is passed through the cell voltage that battery voltage sampling circuit 232 and 234 is monitored batteries 202 again.Battery management module 262 is periodically measured the cell voltage of battery 202 and 204 with default scanning frequency.
In step 404, the cell voltage in the battery module is carried out and relatively generates a reference signal.Such as, battery 202,204,206 in the battery module 282 and 284 and 208 cell voltage are compared and produce reference signal.In one embodiment, reference signal refers to battery 202,204, the minimum voltage Vmin of 206 and 208 cell voltages.
In step 406, based on reference signal, decision will be performed battery balanced battery.Cell voltage such as, each battery 202,204,206 and 208 can be compared by battery balanced algorithm and reference signal.Battery balanced algorithm can define preset threshold value Δ V.The difference of the cell voltage of minimum voltage Vmin and certain battery exceeds preset threshold value Δ V, and this battery will be performed battery balanced.
In step 408, battery balanced meeting is performed in the battery of determining in each battery module.Such as, battery balanced driver 264 or 274 can drive the corresponding battery equalizing circuit, and for example battery equalizing circuit 222,224, and 226 or 228 carry out equilibrium.Such as, battery balanced if battery 202 is carried out by decision, battery balanced driver 264 will start the electric current shunting of battery equalizing circuit 222 with battery 202.
Claims (19)
1. a battery equalization system is characterized in that, described battery equalization system comprises:
At least two battery modules, each described battery module comprises battery, equalizing circuit and battery management module, described battery management module is connected the cell voltage that is used to obtain described battery with described battery, and described equalizing circuit is connected with described battery and is used under the control of described battery management module described battery being carried out equilibrium; With
The controller that connects between described battery module is used for producing reference signal based on the described cell voltage that described battery module provides,
Wherein the battery management module in each described battery module is controlled described equalizing circuit and according to described reference signal described battery is carried out equilibrium, obtains the battery balanced of described battery module with this.
2. battery equalization system according to claim 1 is characterized in that, described battery module further comprises the voltage sampling circuit that is connected between described battery and the described battery management module, and described voltage sampling circuit is used to detect described cell voltage.
3. battery equalization system according to claim 1 is characterized in that, described reference signal refers to the minimum voltage value of the described cell voltage that described each battery module provides.
4. battery equalization system according to claim 1 is characterized in that described controller receives described cell voltage from described battery module, and more described cell voltage is to produce described reference signal.
5. battery equalization system according to claim 1 is characterized in that described controller receives the minimum cell voltage of battery module respectively, and more described minimum cell voltage is to produce described reference signal.
6. battery equalization system according to claim 5 is characterized in that described battery management module comprises single-chip microcomputer, and the cell voltage of each battery that is used for more described battery module is to produce described minimum cell voltage.
7. battery equalization system according to claim 1 is characterized in that, described controller produces balanced control signal and offers described battery module based on described reference signal.
8. battery equalization system according to claim 7 is characterized in that, described balanced control signal decision is performed the battery of described equilibrium.
9. battery equalization system according to claim 1 is characterized in that described battery module receives described reference signal, and is performed the battery of described equilibrium based on described reference signal decision.
10. battery equalization system according to claim 1 is characterized in that, be performed the voltage of described battery of described equilibrium and the difference of described reference signal and surpass preset threshold value.
11. battery equalization system according to claim 1 is characterized in that, described controller is connected by the described battery module of communication bus and each.
12. a battery balanced method that is used between at least two battery modules is characterized in that, described battery balanced method comprises:
Monitor the cell voltage of the battery in each described battery module;
Relatively the cell voltage of all battery modules is to produce reference signal;
Based on described reference signal, in battery module, specify to be performed balanced battery; With
Carry out described equilibrium for the battery of appointment, in battery module, obtain battery balanced with this.
13. the battery balanced method that is used between at least two battery modules according to claim 12 is characterized in that, the step that described appointment is performed balanced battery comprises:
The voltage of the cell voltage of more described battery and described reference signal respectively; With
When the voltage difference that relatively obtains exceeded preset threshold value, the battery that decision is compared was the battery of described appointment.
14. the battery balanced method that is used between at least two battery modules according to claim 12 is characterized in that, carries out described equilibrium and comprises in the step of the battery of appointment:
Drive battery equalizing circuit based on described reference signal; With
Utilize described battery equalizing circuit to shunt the electric current of the battery of described appointment.
15. the battery balanced method that is used between at least two battery modules according to claim 12 is characterized in that described reference signal refers to the minimum voltage value of the described cell voltage that each described battery module provides.
16. a battery equalizing circuit that is used between balanced at least two battery modules is characterized in that described battery equalizing circuit comprises:
Battery management module is used for being connected with each battery the cell voltage with the described battery of monitoring described battery module;
Equalizing circuit is used for being connected under the control of described battery management module described battery is carried out with each described battery balanced; With
The controller that connects between described battery module is used for producing reference signal based on the described cell voltage that described battery module provides,
Wherein the battery management module in each described battery module is controlled described equalizing circuit and according to described reference signal described battery is carried out equilibrium, obtains the battery balanced of described battery module with this.
17. the battery equalizing circuit that is used between balanced at least two battery modules according to claim 16 it is characterized in that described controller receives described cell voltage from described battery module, and more described cell voltage is to produce described reference signal.
18. the battery equalizing circuit that is used between balanced at least two battery modules according to claim 16, it is characterized in that, described controller receives the minimum cell voltage of described battery module respectively, and more described minimum cell voltage is to produce described reference signal.
19. the battery equalizing circuit that is used between balanced at least two battery modules according to claim 16 is characterized in that,
Described controller is connected by the described battery module of communication bus and each.
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| CN 200910001193 CN101789609B (en) | 2009-01-23 | 2009-01-23 | Battery equalization system, method and circuit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102064356A (en) * | 2010-12-21 | 2011-05-18 | 深圳市佳华利道新技术开发有限公司 | Battery management system |
| CN102111005A (en) * | 2011-03-08 | 2011-06-29 | 上海大学 | Equalization management system and method for nondestructive lithium battery |
| CN102412601A (en) * | 2010-09-25 | 2012-04-11 | 江苏海四达电源股份有限公司 | Protection control method of low-capacity high-power lithium battery pack |
| CN102653263A (en) * | 2011-03-03 | 2012-09-05 | 北汽福田汽车股份有限公司 | Electric automobile power battery management system and method |
| CN103280854A (en) * | 2013-05-23 | 2013-09-04 | 浙江吉利汽车研究院有限公司杭州分公司 | Charging system and charging method for automobile power battery |
| CN103311983A (en) * | 2012-03-14 | 2013-09-18 | 株式会社理光 | Charge control circuit and battery device |
| CN106611984A (en) * | 2016-03-15 | 2017-05-03 | 西安华泰半导体科技有限公司 | Battery management method and system |
| WO2019042400A1 (en) * | 2017-08-31 | 2019-03-07 | 比亚迪股份有限公司 | Battery equalization method and system, vehicle, storage medium, and electronic device |
| CN110015129A (en) * | 2017-08-31 | 2019-07-16 | 比亚迪股份有限公司 | Battery equalization method, system, vehicle, storage medium and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5504415A (en) * | 1993-12-03 | 1996-04-02 | Electronic Power Technology, Inc. | Method and apparatus for automatic equalization of series-connected batteries |
| US7081737B2 (en) * | 2003-06-19 | 2006-07-25 | O2Micro International Limited | Battery cell monitoring and balancing circuit |
| CN1186868C (en) * | 2003-09-05 | 2005-01-26 | 北京交通大学 | Automatic balancing device for series storage battery |
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| CN102412601A (en) * | 2010-09-25 | 2012-04-11 | 江苏海四达电源股份有限公司 | Protection control method of low-capacity high-power lithium battery pack |
| CN102064356A (en) * | 2010-12-21 | 2011-05-18 | 深圳市佳华利道新技术开发有限公司 | Battery management system |
| CN102064356B (en) * | 2010-12-21 | 2012-09-19 | 深圳市佳华利道新技术开发有限公司 | Battery management system |
| CN102653263A (en) * | 2011-03-03 | 2012-09-05 | 北汽福田汽车股份有限公司 | Electric automobile power battery management system and method |
| CN102653263B (en) * | 2011-03-03 | 2014-08-06 | 北汽福田汽车股份有限公司 | Electric automobile power battery management system and method |
| CN102111005A (en) * | 2011-03-08 | 2011-06-29 | 上海大学 | Equalization management system and method for nondestructive lithium battery |
| CN103311983A (en) * | 2012-03-14 | 2013-09-18 | 株式会社理光 | Charge control circuit and battery device |
| CN103280854A (en) * | 2013-05-23 | 2013-09-04 | 浙江吉利汽车研究院有限公司杭州分公司 | Charging system and charging method for automobile power battery |
| CN103280854B (en) * | 2013-05-23 | 2018-10-02 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile power cell charging system and charging method |
| CN106611984A (en) * | 2016-03-15 | 2017-05-03 | 西安华泰半导体科技有限公司 | Battery management method and system |
| CN106611984B (en) * | 2016-03-15 | 2020-12-11 | 深圳芯典半导体科技有限公司 | Battery management method and system |
| WO2019042400A1 (en) * | 2017-08-31 | 2019-03-07 | 比亚迪股份有限公司 | Battery equalization method and system, vehicle, storage medium, and electronic device |
| CN110015129A (en) * | 2017-08-31 | 2019-07-16 | 比亚迪股份有限公司 | Battery equalization method, system, vehicle, storage medium and electronic equipment |
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| CN101789609B (en) | 2012-12-12 |
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