CN201781037U - Battery management system of electric automobile - Google Patents

Battery management system of electric automobile Download PDF

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Publication number
CN201781037U
CN201781037U CN 201020512734 CN201020512734U CN201781037U CN 201781037 U CN201781037 U CN 201781037U CN 201020512734 CN201020512734 CN 201020512734 CN 201020512734 U CN201020512734 U CN 201020512734U CN 201781037 U CN201781037 U CN 201781037U
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China
Prior art keywords
battery
controller
master controller
voltage
detection unit
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CN 201020512734
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Chinese (zh)
Inventor
黄勇
王璘
张明辉
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扬州飞驰动力科技有限公司
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Priority to CN 201020512734 priority Critical patent/CN201781037U/en
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Publication of CN201781037U publication Critical patent/CN201781037U/en

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    • Y02E60/12

Abstract

A battery management system of an electric automobile comprises a main controller, a plurality of auxiliary controllers and a plurality of battery cases corresponding to the auxiliary controllers in number. Each auxiliary controller is respectively connected with one corresponding battery case, the auxiliary controllers are connected to the main controller by first CAN bus branches, the main controller is connected to an integral automobile controller and a vehicular displaying device of the electric automobile via second CAN bus branches, each auxiliary controller includes a voltage detection unit and a temperature detection unit, each voltage detection unit and the corresponding temperature detection unit detect voltage and temperature of a corresponding single battery, and the main controller comprising an overall current detection unit, an overall voltage detection unit and an insulating resistance detection unit is used for detecting overall current, overall voltage and insulating resistance of the battery cases. The battery management system has the advantages of higher safety, reliability, better instantaneity and efficiency in management of the power batteries, simple structure and consequent reduction of production cost and simplification of design.

Description

The battery management system of electric automobile

Technical field

The utility model relates to the electric automobile field, is specifically related to a kind of battery management system of electric automobile.

Background technology

At present, battery management system all has significant progress at aspects such as functional, reliability, stability and practicality: in context of detection, it has improved the certainty of measurement of voltage, temperature and electric current, has satisfied the needs of vehicle operating and battery management substantially; Aspect data communication, it has been equipped with more complete communication interface, sends to entire car controller, display etc. with the information with battery; Aspect reliability, it has improved the antijamming capability of system in conjunction with present large scale integrated circuit technology.

Existing battery management system mainly is core with the single-chip microcomputer, it adopts the distributed network control system structure, rely on single-chip microcomputer to handle the various operational factors of electrokinetic cell in real time, battery SOC (being battery charge state) for example, total current, total voltage, monomer battery voltage, battery the temperature inside the box, carry out failure diagnosis and warning etc., but, this existing battery management system mainly relies on single-chip microcomputer to carry out signal processing, the single-chip microcomputer live load is overweight, the real-time of its dynamics of management battery is not enough, system is usually because reaction is untimely and safe and reliable inadequately, and is not ideal enough for the efficiency of management of electrokinetic cell.

Therefore, need a kind of novel battery management system.

The utility model content

The purpose of this utility model provides a kind of battery management system, to overcome the above-mentioned defective of prior art, makes that described battery management system is more safe and reliable, and the management of electrokinetic cell is had more real-time and efficiency.

Above-mentioned purpose is achieved through the following technical solutions: the battery management system of electric automobile, comprise master controller, a plurality of slave controllers and with the corresponding a plurality of battery cases of the quantity of described slave controller, described a plurality of slave controller is connected in a corresponding described battery case separately, and described a plurality of slave controller is connected in described master controller by first via CAN bus, described master controller is connected in the entire car controller and the vehicle-mounted display device of described electric automobile by the second road CAN bus, each described slave controller comprises voltage detection unit and temperature detecting unit, the voltage and the temperature of each cell in this voltage detection unit and temperature detecting unit detection and the corresponding described battery case of described slave controller, described master controller comprises the total current detecting unit, total voltage detecting unit and insulation resistance detecting unit are to detect the total current of described a plurality of battery cases, total voltage and insulation resistance.

Preferably, described master controller also comprises the wireless sending module that is used for the information that sends to the remote monitoring platform.

Preferably, described master controller also comprises the real time record module that is used for real-time recording information.

Preferably, described master controller also comprises the charge protection module that is used for protection battery when battery charge.

By technique scheme of the present utility model; described battery management system has two-way CAN bus; can measure the voltage and the temperature of each cell with degree of precision by slave controller; and the data of collecting are sent to master controller by CAN1; master controller is measured battery pack with degree of precision and is got total voltage; battery operated electric current; insulation resistance; and the battery operated data based predefined fault threshold of slave controller collection carried out data analysis and fault judgement; require to carry out analysis-by-synthesis according to battery protection requirement and car load control on this basis; provide the warning message of battery system; by with the CAN2 bus of car load exchanges data with battery operated data; mobile unit is given in warning message and battery management system self operating state real time reaction; thereby make that described battery management system is more safe and reliable, the management of electric automobile power battery is had more real-time and efficiency.In addition, under optimal way, the master controller of described battery management system can also comprise wireless sending module, and so that above-mentioned information is sent to the rear control and monitor console, this is very easy to the real-time monitoring to the operating state of battery.Described master controller can comprise the real time record module that is used to write down the battery real time information, and the data message with in the record battery operation has made things convenient for analysis and protection to the battery in travelling.Simultaneously, described master controller can also comprise the charge protection module, providing the electric weight of needs charging when the battery charge according to SOC value of battery, can the automatic disconnection charge circuit when being full of with complete charge.In addition, this battery management system is simple in structure, thereby reduces production costs and simplified design.

Description of drawings

Fig. 1 is the structured flowchart of the utility model battery management system;

Fig. 2 is the detection schematic diagram of the slave controller of the utility model battery management system; And

Fig. 3 is the schematic diagram of preferred implementation of the master controller of the utility model battery management system.

Embodiment

The electric machine controller of electric automobile of the present utility model is described below in conjunction with accompanying drawing.

Referring to Fig. 1 to Fig. 3, battery management system of the present utility model comprises master controller, a plurality of slave controllers and with the corresponding a plurality of battery cases of the quantity of described slave controller, described a plurality of slave controller is connected in a corresponding described battery case separately, and described a plurality of slave controller is connected in described master controller by first via CAN bus, described master controller is connected in the entire car controller and the vehicle-mounted display device of described electric automobile by the second road CAN bus, each described slave controller comprises voltage detection unit and temperature detecting unit, the voltage and the temperature of each cell in this voltage detection unit and temperature detecting unit detection and the corresponding described battery case of described slave controller, described master controller comprises the total current detecting unit, total voltage detecting unit and insulation resistance detecting unit are to detect the total current of described a plurality of battery cases, total voltage and insulation resistance.

As can see from Figure 1; this battery management system has two-way CAN bus; can measure the voltage and the temperature of each cell in the battery case with degree of precision by slave controller; and the data of collecting are sent to master controller by first via CAN bus (representing with CAN1 among Fig. 1); master controller is measured the total voltage of all battery pack with degree of precision; operating current; insulation resistance; and the battery data of slave controller collection carried out data analysis and fault judgement according to predefined fault threshold; and control requirement according to battery protection requirement and car load and carry out analysis-by-synthesis; provide the warning message of battery system, by carrying out the operational data of the second road CAN bus (representing with CAN2 among Fig. 1) of exchanges data with electrokinetic cell with entire car controller; entire car controller and corresponding vehicle-mounted display device are given in warning message and battery management system self operating state real time reaction.

Preferably, described master controller can comprise wireless sending module, and so that above-mentioned information is sent to the remote monitoring platform, this is very easy to the real-time monitoring to the electrokinetic cell operating state.Described master controller can comprise the real time record module, with record electrokinetic cell real time information and operating data message, has made things convenient for analysis and protection to the battery in travelling.In addition, preferably, described master controller can comprise the charge protection module, can provide the electric weight of needs charging like this when charging according to SOC value of battery, can automatic disconnection charge circuit complete charge when being full of.

By last analysis as can be seen, battery management system of the present utility model is used for electric automobile, when under the situation of a plurality of cell case serial or parallel connections with increase electric energy and power performance, described battery management system comprises a master controller and a plurality of slave controller, so that more effectively carry out the pipe operation of battery.Particularly, the battery of slave controller management corresponding battery module, master controller is managed all batteries, and obtains data from slave controller, puts in order and analyzes, thereby send the better cell of controlling in all battery cases and each battery case of instruction.

Fig. 2 is expressed as the detection schematic diagram of the slave controller of the utility model battery management system, as mentioned above, this battery management system comprises a plurality of slave controllers, each slave controller can be controlled the cell in the battery case corresponding with it, and can reasonably control and adjust according to the requirement of master controller.Correspondingly, slave controller can comprise voltage detection unit and temperature detecting unit, and wherein voltage detection unit detects the magnitude of voltage of cell; Temperature detecting unit detects the temperature of corresponding cell; Slave controller is managed each cell in its corresponding battery case.Carry out communication by first via CAN bus between slave controller and the master controller.

Referring to shown in Figure 3, master controller receives the information of each slave controller, and the information that arrives of finishing collecting; Master controller sends to equipment such as entire car controller and vehicle-mounted demonstration to the information of collecting by the second road CAN bus.Comprise total current detecting unit, total voltage detecting unit, insulation resistance detecting unit in the master controller, preferably, can also comprise wireless transmission unit, real time record module, charge protection unit; The total current detecting unit detects the total current size of all batteries case, the total voltage detecting unit detects the total voltage of all batteries case, voltage and aggregate-value that this total voltage detecting unit detects all slave controllers of analytical calculation are according to the current total voltage that calculates all last batteries.In addition, the insulation resistance detecting unit is used for detecting in real time current insulation resistance; The real time record module is used under the real time record battery at the operation information of each period, and by wireless sending module, sends to background monitoring system; In addition, the charge protection unit of master controller is used for when charging battery effectively being protected, and prevents the generation that overcharges.

Carry out independently information communication between the battery management system of the present utility model, can well prevent to disturb, make data more quick and accurate.

Therefore; battery management system of the present utility model has two-way CAN bus; can measure the voltage and the temperature of each cell with degree of precision by slave controller; and the data of collecting are sent to master controller by CAN1; master controller is measured battery pack with degree of precision and is got total voltage; battery operated electric current; insulation resistance; and the battery operated data based predefined fault threshold of slave controller collection carried out data analysis and fault judgement; require to carry out analysis-by-synthesis according to battery protection requirement and car load control on this basis; provide the warning message of battery system; by with the CAN2 bus of car load exchanges data with battery operated data; mobile unit is given in warning message and battery management system self operating state real time reaction; thereby make that described battery management system is more safe and reliable, the management of electric automobile power battery is had more real-time and efficiency.In addition, under optimal way, the master controller of described battery management system can also comprise wireless sending module, and so that above-mentioned information is sent to the rear control and monitor console, this is very easy to the real-time monitoring to the operating state of battery.Described master controller can comprise the real time record module that is used to write down the battery real time information, and the data message with in the record battery operation has made things convenient for analysis and protection to the battery in travelling.Simultaneously, described master controller can also comprise the charge protection module, providing the electric weight of needs charging when the battery charge according to SOC value of battery, can the automatic disconnection charge circuit when being full of with complete charge.In addition, this battery management system is simple in structure, thereby reduces production costs and simplified design.

Each concrete technical characterictic described in above-mentioned embodiment can carry out combination in any by any suitable manner, and it falls within the scope disclosed in the utility model equally.In addition, also can carry out combination in any between the various execution mode of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned execution mode; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection range of the present utility model.Protection range of the present utility model is defined by the claims.

Claims (4)

1. the battery management system of electric automobile, it is characterized in that, be provided with master controller, a plurality of slave controllers and with the corresponding a plurality of battery cases of the quantity of described slave controller, described a plurality of slave controller is connected in a corresponding described battery case separately, and described a plurality of slave controller is connected in described master controller by first via CAN bus, described master controller is connected in the entire car controller and the vehicle-mounted display device of described electric automobile by the second road CAN bus, each described slave controller comprises voltage detection unit and temperature detecting unit, the voltage and the temperature of each cell in this voltage detection unit and temperature detecting unit detection and the corresponding described battery case of this slave controller, described master controller comprises the total current detecting unit, total voltage detecting unit and insulation resistance detecting unit are to detect the total current of described a plurality of battery cases, total voltage and insulation resistance.
2. battery management system according to claim 1 is characterized in that, described master controller also comprises the wireless sending module that is used for the information that sends to the remote monitoring platform.
3. battery management system according to claim 1 is characterized in that, described master controller also comprises the real time record module that is used for real-time recording information.
4. battery management system according to claim 1 is characterized in that, described master controller also comprises the charge protection module that is used for protection battery when battery charge.
CN 201020512734 2010-08-24 2010-08-24 Battery management system of electric automobile CN201781037U (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102252599A (en) * 2011-04-18 2011-11-23 上海瑞华(集团)有限公司 Wading depth monitoring device for pure electric vehicle
CN102445936A (en) * 2011-12-29 2012-05-09 北京佳讯飞鸿电气股份有限公司 Method for carrying out remote management on batteries
CN102879747A (en) * 2012-10-29 2013-01-16 北京中电普华信息技术有限公司 Battery information sensing system and method
CN103010042A (en) * 2012-11-21 2013-04-03 中山普润斯电源设备技术有限公司 Cell management system capable of supporting network operation
CN103057433A (en) * 2012-12-25 2013-04-24 北京理工大学 Method for detecting unit cells of grouped cells in electric automobile under working state
CN103141005A (en) * 2011-10-05 2013-06-05 尼吉康株式会社 Stationary charging system
CN103163867A (en) * 2013-03-22 2013-06-19 长兴精盛液压机械有限公司 Automatic assembly control system for storage battery pole group
CN105589043A (en) * 2015-12-09 2016-05-18 天津市捷威动力工业有限公司 Electrical property test and protection system and method for power battery pack
CN105870520A (en) * 2016-04-26 2016-08-17 东莞新能德科技有限公司 Control method, device and system of lithium battery
CN106058334A (en) * 2016-07-01 2016-10-26 合肥国轩高科动力能源有限公司 Novel battery management system
CN106054083A (en) * 2016-06-27 2016-10-26 北京新能源汽车股份有限公司 Safety monitoring method and apparatus of power battery system
CN106114249A (en) * 2016-05-19 2016-11-16 杭州伯坦科技工程有限公司 Electric automobile batteries in parallel connection case power-on and power-off control system and control method
CN107069123A (en) * 2017-04-10 2017-08-18 大连理工大学 Battery rapid detection system and its detection method are damaged in secondary lithium battery group
CN107633668A (en) * 2016-07-19 2018-01-26 重庆无线绿洲通信技术有限公司 The infrared communication method and device of battery management in a kind of car networking
CN108417911A (en) * 2018-02-28 2018-08-17 北京国能电池科技股份有限公司 Electric vehicle battery management method and system

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102252599A (en) * 2011-04-18 2011-11-23 上海瑞华(集团)有限公司 Wading depth monitoring device for pure electric vehicle
EP2613422A1 (en) * 2011-10-05 2013-07-10 Nichicon Corporation Stationary charging system
EP2613422A4 (en) * 2011-10-05 2013-12-11 Nichicon Corp Stationary charging system
CN103141005A (en) * 2011-10-05 2013-06-05 尼吉康株式会社 Stationary charging system
CN102445936A (en) * 2011-12-29 2012-05-09 北京佳讯飞鸿电气股份有限公司 Method for carrying out remote management on batteries
CN102879747A (en) * 2012-10-29 2013-01-16 北京中电普华信息技术有限公司 Battery information sensing system and method
CN103010042A (en) * 2012-11-21 2013-04-03 中山普润斯电源设备技术有限公司 Cell management system capable of supporting network operation
CN103057433A (en) * 2012-12-25 2013-04-24 北京理工大学 Method for detecting unit cells of grouped cells in electric automobile under working state
CN103057433B (en) * 2012-12-25 2016-09-28 北京理工大学 The detection method of the cell of stack battery in electric automobile under duty
CN103163867A (en) * 2013-03-22 2013-06-19 长兴精盛液压机械有限公司 Automatic assembly control system for storage battery pole group
CN105589043A (en) * 2015-12-09 2016-05-18 天津市捷威动力工业有限公司 Electrical property test and protection system and method for power battery pack
CN105870520B (en) * 2016-04-26 2019-03-19 东莞新能德科技有限公司 The control method of lithium battery, apparatus and system
CN105870520A (en) * 2016-04-26 2016-08-17 东莞新能德科技有限公司 Control method, device and system of lithium battery
CN106114249A (en) * 2016-05-19 2016-11-16 杭州伯坦科技工程有限公司 Electric automobile batteries in parallel connection case power-on and power-off control system and control method
CN106054083A (en) * 2016-06-27 2016-10-26 北京新能源汽车股份有限公司 Safety monitoring method and apparatus of power battery system
CN106054083B (en) * 2016-06-27 2019-04-05 北京新能源汽车股份有限公司 A kind of method for safety monitoring and device of electrokinetic cell system
CN106058334A (en) * 2016-07-01 2016-10-26 合肥国轩高科动力能源有限公司 Novel battery management system
CN107633668A (en) * 2016-07-19 2018-01-26 重庆无线绿洲通信技术有限公司 The infrared communication method and device of battery management in a kind of car networking
CN107069123A (en) * 2017-04-10 2017-08-18 大连理工大学 Battery rapid detection system and its detection method are damaged in secondary lithium battery group
CN108417911A (en) * 2018-02-28 2018-08-17 北京国能电池科技股份有限公司 Electric vehicle battery management method and system

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Free format text: CORRECT: ADDRESS; FROM: 225007 YANGZHOU, JIANGSU PROVINCE TO: 225009 YANGZHOU, JIANGSU PROVINCE

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Owner name: WANG LIN

Free format text: FORMER OWNER: YANGZHOU FEICHI DYNAMIC MECHANISM CO., LTD.

Effective date: 20120118

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Address after: 225009 B District, Yangzhou R & D center, 186 middle Yangzi Road, Yangzhou, Jiangsu 206, China

Patentee after: Wang Lin

Address before: 225007 Jiangsu city of Yangzhou province Guangling Industrial Park Guangling District Genshin Road

Patentee before: Yangzhou Feichi Dynamic Mechanism Co., Ltd.

EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110330

Termination date: 20150824