CN202840547U - Intelligent management system of lithium battery of electric automobile - Google Patents

Intelligent management system of lithium battery of electric automobile Download PDF

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Publication number
CN202840547U
CN202840547U CN2012202165202U CN201220216520U CN202840547U CN 202840547 U CN202840547 U CN 202840547U CN 2012202165202 U CN2012202165202 U CN 2012202165202U CN 201220216520 U CN201220216520 U CN 201220216520U CN 202840547 U CN202840547 U CN 202840547U
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China
Prior art keywords
battery
controller
management system
voltage
electric automobile
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Expired - Lifetime
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CN2012202165202U
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Chinese (zh)
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不公告发明人
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JIANGSU GREENWHEEL NEW ENERGY ELECTRIC VEHICLE Co Ltd
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Shenzhen Greenwheel Electric Vehicle Co Ltd
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Priority to CN2012202165202U priority Critical patent/CN202840547U/en
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Abstract

The utility model relates to an intelligent management system of a lithium battery of an electric automobile, and the system comprises a primary controller, a plurality of secondary controllers and a plurality of battery boxes of which the quantity is corresponding to that of the secondary controllers, wherein each battery box is composed of a battery pack composed of a plurality of single batteries; the plurality of secondary controllers are respectively connected to the corresponding battery boxes and are used for sending information including single voltage, total voltage, temperature and battery internal resistance of the battery box controlled by each secondary battery to the primary controller through a CAN (Controller Area Network) bus; the primary controller receives and calculates the information of the secondary controllers and sends the information including the single voltage, the temperature of each battery box, the total voltage, the insulation resistance, an SOC (Stress Optical Coefficient) value and the battery-pack internal voltage of each battery pack to a whole vehicle controller and an automobile instrument through a second path of the CAN bus; and the primary controller is communicated with a charging machine through a third path of the CAN bus, is used for monitoring the voltage information of the charging machine and the charging cost of charging the charging machine in real time, and is communicated with a national power grid or a charging pile of a charging station.

Description

The electric automobile lithium battery intelligent management system
Technical field
The utility model relates to a kind of battery management system, relates in particular to a kind of electric automobile lithium battery intelligent management system, is applicable to management and the protection of pure electric automobile lithium battery.
Background technology
Battery management system (BMS) is the tie between battery and the user, main object is secondary cell, there is disadvantage in secondary cell, few such as stored energy, connection in series-parallel uses the problem, fail safe, the battery electric quantity that cause to estimate difficulty etc., the performance of battery is complicated, and dissimilar battery behavior also differs greatly.Battery management system mainly is exactly in order to improve the utilance of battery, prevents from that over-charging of battery from crossing to put, and prolongs the useful life of battery, and the state of monitoring battery improves the flying power of car load.At present, battery management system is functional, reliability, all there is considerable progress the aspect such as stability and practicality, but the speed and the precision or undesirable that gather, part out of the ordinary adopts the DSP digital processing unit to gather voltage, although the precision that gathers has improved, but manufacturing cost is larger, is difficult to promote.
The main monolithic of existing battery management system seat in the plane core, adopt the principle of topological principal and subordinate's control to control, although reduced the live load of single-chip microcomputer, system's Background control that neither one is complete, 1. task management imperfection, 2. upgrading products are slow, easily eliminate, the internal resistance of 3. not surveying battery is to battery SOC (battery charge state) neither one datum mark, the SOC(battery charge state of estimating) not too accurate, easily affect life-span of battery.
The utility model content
The purpose of this utility model provides a kind of electric automobile lithium battery intelligent management system, to overcome the defects of prior art, so that described battery management system is more safe and reliable, the management of electrokinetic cell is had more real-time and efficiency.
The specific implementation technical scheme is: a kind of electric automobile lithium battery intelligent management system, comprise: master controller, a plurality of from controller and with described from the corresponding a plurality of battery cases of the quantity of controller, each battery case is comprised of the battery pack that a plurality of cells form, described a plurality of from control be connected in separately a corresponding described battery case and by the CAN bus each monomer voltage from battery case that controller is controlled, total voltage, temperature and the internal resistance of cell send to master controller.Described master controller is by passing through the second road CAN bus the monomer voltage of every case battery pack, the temperature of every case battery pack, total voltage to reception and calculating from controller information again, total current, insulation resistance, the internal resistance of SOC value and battery pack sends to entire car controller and automobile instrument, described master controller is followed the charger communication by Third Road CAN bus, the information of voltage of Real Time Monitoring charger and charger are the expense of this car charging, and convenient and national grid or the communication of charging station charging pile.
Preferably, described master controller comprises RAM (random access memory) card, is used for recording the information of every case battery, the information such as the temperature of every case battery, internal resistance and total current, total voltage, SOC value, mileage number.
Preferably, describedly comprise that from controller the internal resistance observation circuit is used for the internal resistance of Real Time Monitoring battery.
Preferably, describedly comprise that from controller voltage comparator is used to do the voltage reference point of cell, with convenient battery is carried out charge and discharge balancing.
Preferably, described master controller comprises that STM32F107 does the core processor of main controller, utilizes the OSII system to do the backstage of main controller, is used for making things convenient for the problem of system management and multitasking.
The beneficial effects of the utility model are: battery management is more safe and reliable, has more real-time and efficiency, the SOC(battery charge state of calculating) more accurate, the useful life of prolongation battery.
Description of drawings
Fig. 1 is the structured flowchart of the utility model battery management system;
Fig. 2 is the detection schematic diagram from control box of the utility model battery management system;
Fig. 3 is the detection schematic diagram of the master control box of the utility model battery management system;
Fig. 4 is the schematic diagram of the discharging equalizing circuit of the utility model battery management system;
Fig. 5 is the schematic diagram of the internal resistance supervisory circuit of the utility model battery management system.
Embodiment
A kind of electric automobile lithium battery intelligent management system, comprise: master controller, a plurality of from controller and with described from the corresponding a plurality of battery cases of the quantity of controller, each battery case is comprised of the battery pack that a plurality of cells form, described a plurality of from control be connected in separately a corresponding described battery case and by the CAN bus each monomer voltage from battery case that controller is controlled, total voltage, temperature and the internal resistance of cell send to master controller.Described master controller is by passing through the second road CAN bus the monomer voltage of every case battery pack, the temperature of every case battery pack, total voltage to reception and calculating from controller information again, total current, insulation resistance, the internal resistance of SOC value and battery pack sends to entire car controller and automobile instrument, described master controller is followed the charger communication by Third Road CAN bus, the information of voltage of Real Time Monitoring charger and charger are the expense of this car charging, and with national grid or the communication of charging station charging pile.
Preferably, described master controller comprises that RAM (random access memory) card is used to record the information of every case battery, and the information real time record such as the temperature of every case battery, internal resistance and total current, total voltage, SOC value, mileage number are got off.
Preferably, describedly comprise that from controller the internal resistance observation circuit is used for the internal resistance of Real Time Monitoring battery.
Preferably, describedly comprise that from controller voltage comparator is used to do the voltage reference point of cell, be used for battery is carried out charge and discharge balancing.
Preferably, described master controller comprises that STM32F107 does the core processor of main controller, utilizes the OSII system to do the operating system platform of main controller, is used for making things convenient for the problem of system management and multitasking.
The beneficial effects of the utility model are: battery management is more safe and reliable, has more real-time and efficiency, the SOC(battery charge state of calculating) more accurate, the useful life of prolongation battery.
Specific implementation process of the present utility model is: by technique scheme of the present utility model; described battery management system has three road CAN buses; be respectively: CAN0; CAN1; CAN2; by can be with relatively each monomer internal resistance of high-acruracy survey from controller; cell and temperature; and by CAN0 the data of collecting are sent to master controller; master controller calculates total voltage with degree of precision; battery operated electric current; insulation resistance and SOC(battery charge state) value; and the battery operated data based predefined fault threshold values from the controller collection is carried out data analysis and fault judge; 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.Thereby so that described battery management system is more reliable and secure, lithium battery management system is had more real-time and efficiency.In addition, under optimal way, described battery management system increase charge and discharge balancing from controller, improve battery power discharge or the inconsistent problem of charging, go back simultaneously the situation of the internal resistance of monitoring battery, extend the life of a cell.Master control increases the record of the mileage number of the information of RAM (random access memory) card record battery pack and driving, makes things convenient for the management and maintenance of battery pack.
Although reference example and accompanying drawing; a kind of electric vehicle lithium battery intelligent management system of the present utility model is illustrated; but above-mentioned disclosed content only is in order better to understand the utility model; rather than limit by any way the scope of claim; therefore all according to the described structure of the utility model patent claim, feature and principle do etc. change or modify, be included in protection range of the present utility model.

Claims (7)

1. electric automobile lithium battery intelligent management system, it is characterized in that, described electric automobile lithium battery intelligent management system, comprise: master controller, a plurality of from controller and with described from the corresponding a plurality of battery cases of the quantity of controller, each battery case is comprised of the battery pack that a plurality of cells form;
Describedly a plurality ofly be connected in separately a corresponding described battery case and by the CAN bus each information from battery case that controller is controlled sent to master controller from controller;
Described master controller is by sending to entire car controller and automobile instrument to the information of every case battery pack by the second road CAN bus again to reception and calculating from controller information;
Described master controller with the charger communication, is used for the information of voltage of Real Time Monitoring charger and the expense that charger charges for this car by Third Road CAN bus, and with national grid or the communication of charging station charging pile.
2. electric automobile lithium battery intelligent management system as claimed in claim 1 is characterized in that, described information from battery case that controller is controlled is batteries monomer voltage, total voltage, temperature and the internal resistance of cell.
3. electric automobile lithium battery intelligent management system as claimed in claim 1, it is characterized in that, the information of described every case battery pack is monomer voltage, the temperature of every case battery pack, the total voltage of every case battery pack, total current, insulation resistance, the internal resistance of SOC value and battery pack.
4. such as electric automobile lithium battery intelligent management system as described in the claim 1,2 or 3, it is characterized in that, described master controller comprises RAM (random access memory) card, is used for recording the information of every case battery, the temperature of every case battery, internal resistance and total current, total voltage, SOC value, mileage number information.
5. such as electric automobile lithium battery intelligent management system as described in the claim 1,2 or 3, it is characterized in that, describedly comprise that from controller the internal resistance observation circuit is used for the internal resistance of Real Time Monitoring battery.
6. such as electric automobile lithium battery intelligent management system as described in the claim 1,2 or 3, it is characterized in that, describedly comprise that from controller voltage comparator is used to do the voltage reference point of cell, with convenient battery is carried out charge and discharge balancing.
7. such as electric automobile lithium battery intelligent management system as described in the claim 1,2 or 3, it is characterized in that, it is STM32F107 that described master controller is processed core, and described master controller operating system platform is the OSII system, is used for the processing of system management and multitask.
CN2012202165202U 2012-05-15 2012-05-15 Intelligent management system of lithium battery of electric automobile Expired - Lifetime CN202840547U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102673419A (en) * 2012-05-15 2012-09-19 深圳市陆地方舟电动车有限公司 Intelligent management system of lithium battery of electric automobile
CN104104118A (en) * 2013-04-03 2014-10-15 力博特公司 Intelligent battery connection system and related control method
CN104659869A (en) * 2014-10-07 2015-05-27 中国第一汽车股份有限公司 Balance control device, system and method for lithium-ion power battery
CN104908605A (en) * 2015-06-15 2015-09-16 王凤成 BMS (Battery Management System) decentralized detection and centralized management system of modularized lithium batteries
CN105071451A (en) * 2015-07-14 2015-11-18 合肥华信电动科技发展有限公司 Battery management system
CN106558736A (en) * 2015-09-25 2017-04-05 江苏威能汽车工业发展有限公司 A kind of electric car lithium battery management system
CN106740132A (en) * 2016-12-29 2017-05-31 晋电(天津)新能源科技有限公司 A kind of electric automobile lithium battery intelligent monitoring management system
CN107640030A (en) * 2017-08-07 2018-01-30 北京长城华冠汽车科技股份有限公司 Reduce the method and device of pure electric automobile low tension battery capacity
CN107776412A (en) * 2017-09-29 2018-03-09 苏州汇川联合动力系统有限公司 A kind of braking resistor discharge control system and method
CN109510265A (en) * 2018-11-28 2019-03-22 上海松岳电源科技有限公司 A kind of equal balance system of active-passive integrated formula of battery pack
CN110015135A (en) * 2017-09-22 2019-07-16 江苏智谋科技有限公司 The battery management system and protection system of electric car
CN110764006A (en) * 2019-12-30 2020-02-07 杭州华塑加达网络科技有限公司 Battery management system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102673419A (en) * 2012-05-15 2012-09-19 深圳市陆地方舟电动车有限公司 Intelligent management system of lithium battery of electric automobile
CN104104118A (en) * 2013-04-03 2014-10-15 力博特公司 Intelligent battery connection system and related control method
CN104104118B (en) * 2013-04-03 2016-12-28 力博特公司 A kind of intelligent battery connection system and corresponding control methods
CN104659869A (en) * 2014-10-07 2015-05-27 中国第一汽车股份有限公司 Balance control device, system and method for lithium-ion power battery
CN104908605A (en) * 2015-06-15 2015-09-16 王凤成 BMS (Battery Management System) decentralized detection and centralized management system of modularized lithium batteries
CN105071451A (en) * 2015-07-14 2015-11-18 合肥华信电动科技发展有限公司 Battery management system
CN106558736A (en) * 2015-09-25 2017-04-05 江苏威能汽车工业发展有限公司 A kind of electric car lithium battery management system
CN106740132A (en) * 2016-12-29 2017-05-31 晋电(天津)新能源科技有限公司 A kind of electric automobile lithium battery intelligent monitoring management system
CN107640030A (en) * 2017-08-07 2018-01-30 北京长城华冠汽车科技股份有限公司 Reduce the method and device of pure electric automobile low tension battery capacity
CN107640030B (en) * 2017-08-07 2020-02-04 北京长城华冠汽车科技股份有限公司 Method and device for reducing capacity of low-voltage storage battery of pure electric vehicle
CN110015135A (en) * 2017-09-22 2019-07-16 江苏智谋科技有限公司 The battery management system and protection system of electric car
CN107776412A (en) * 2017-09-29 2018-03-09 苏州汇川联合动力系统有限公司 A kind of braking resistor discharge control system and method
CN109510265A (en) * 2018-11-28 2019-03-22 上海松岳电源科技有限公司 A kind of equal balance system of active-passive integrated formula of battery pack
CN110764006A (en) * 2019-12-30 2020-02-07 杭州华塑加达网络科技有限公司 Battery management system
CN110764006B (en) * 2019-12-30 2020-10-27 杭州华塑加达网络科技有限公司 Battery management system

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GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: JIANGSU GREEN WHEEL EV NEW ENERGY ELECTRIC AUTOMOB

Free format text: FORMER OWNER: SHENZHEN GREEN WHEEL EV NEW ENERGY ELECTROMBILE GROUP CO., LTD.

Effective date: 20131223

C41 Transfer of patent application or patent right or utility model
C56 Change in the name or address of the patentee

Owner name: SHENZHEN GREEN WHEEL EV NEW ENERGY ELECTROMBILE GR

Free format text: FORMER NAME: SHENZHEN GEENWILL ELECTRIC VEHICLE CO., LTD.

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 226502 NANTONG, JIANGSU PROVINCE

CP01 Change in the name or title of a patent holder

Address after: Fourth, AIA second industrial zone Tianliao community Tong Ming Road 518000 Guangdong province Shenzhen Guangming New District Office of Gongming 5, 6, 7

Patentee after: SHENZHEN GREENWHEEL ELECTRIC VECHICLE GROUP CO., LTD.

Address before: Fourth, AIA second industrial zone Tianliao community Tong Ming Road 518000 Guangdong province Shenzhen Guangming New District Office of Gongming 5, 6, 7

Patentee before: Shenzhen GreenWheel Electric Vehicle Co., Ltd.

TR01 Transfer of patent right

Effective date of registration: 20131223

Address after: 226502 Jiangsu city of Nantong province Rugao city town Huacheng Road No. 188 (Rugao Economic Development Zone)

Patentee after: JIANGSU GREENWHEEL NEW ENERGY ELECTRIC VEHICLE CO., LTD.

Address before: Fourth, AIA second industrial zone Tianliao community Tong Ming Road 518000 Guangdong province Shenzhen Guangming New District Office of Gongming 5, 6, 7

Patentee before: SHENZHEN GREENWHEEL ELECTRIC VECHICLE GROUP CO., LTD.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20130327