CN102673420A - Intelligent management system of electric automobile lead-acid battery - Google Patents
Intelligent management system of electric automobile lead-acid battery Download PDFInfo
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- CN102673420A CN102673420A CN2012101492625A CN201210149262A CN102673420A CN 102673420 A CN102673420 A CN 102673420A CN 2012101492625 A CN2012101492625 A CN 2012101492625A CN 201210149262 A CN201210149262 A CN 201210149262A CN 102673420 A CN102673420 A CN 102673420A
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- 239000002253 acid Substances 0.000 title claims abstract description 76
- 238000005070 sampling Methods 0.000 claims abstract description 42
- 238000004891 communication Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims description 22
- 239000000178 monomer Substances 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
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- 240000002853 Nelumbo nucifera Species 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000003111 delayed effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 240000003186 Stachytarpheta cayennensis Species 0.000 description 1
- 235000009233 Stachytarpheta cayennensis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention relates to an intelligent management system of an electric automobile lead-acid battery. The intelligent management system comprises a central processing unit, a sampling module, a CAN (Controller Area Network) communication module and a control module, wherein the central processing unit is used for collecting a sampling signal of the sampling module to carry out calculation, monitoring battery and system states in real time, transmitting the received signal and a calculation result to the CAN communication module in real time and outputting the calculation result to the control module; the sampling module is used for sampling voltage, temperatures and current signals of the lead-acid battery; the CAN communication module is in communication connection with a charger and a whole vehicle system through a CAN bus; and the central processing unit is respectively connected with the sampling module, the CAN communication module and the control module in a communication manner. The intelligent management system of the electric automobile lead-acid battery effectively solves the management and maintenance problems of the lead-acid battery and can accurately estimate a battery state through detecting analog quantities including the voltage, current, the temperatures and the like of the lead-acid battery, so that the battery can be effectively protected, the ageing of the battery is delayed, and the service life of the battery is sufficiently prolonged.
Description
Technical field
The present invention relates to a kind of battery management system, relate in particular to a kind of electronlmobil lead-acid battery intelligent management system, be applicable to the management and the protection of pure electric automobile lead-acid power accumulator.
Background technology
For pure electric vehicle, electrokinetic cell and management thereof are its key core technology.Battery management system is responsible for the collection of electrokinetic cell voltage, temperature and charging or discharging current; High and low pressure relay control, the calculating of SOC and SOH, the monitoring of battery system and trouble diagnosing; The balanced management of battery cell etc. are parts indispensable in the integrated vehicle control tactics.
The lead-acid battery technical development is very ripe, cheap, safe and reliable so far, can export bigger electric current and power, is applicable to pure electric vehicle.But along with cell degradation, descending can appear in its each item performance figure equally, degradation of energy in various degree can occur between each battery, and the cell pressure in the operational process occurs unbalanced largely.So lead-acid battery needs equally a kind of management system, implements to monitor battery status, the protection battery is only broken through and is put, and prolongs battery service life.
At present with lead-acid battery as electrokinetic cell, how not comprise management system, even having of having, it is not very accurate that SOC and SOH estimate.
Summary of the invention
For solving above technical matters, the present invention provides a kind of electronlmobil lead-acid battery intelligent management system, and concrete technical scheme is following:
A kind of electronlmobil lead-acid battery intelligent management system comprises: central process unit, sampling module, CAN communication module and control module;
Said central process unit is used to receive the sampling module sampled signal; Carry out computing; In real time monitoring battery and state of the system, and will receive signal and the computing result is real-time transmitted to CAN communication module and man-machine display interface, simultaneously the computing result is exported to control module;
Voltage, temperature and current signal that said sampling module is used for lead-acid battery are sampled;
Said CAN communication module is connected with battery charger and Full Vehicle System communication through the CAN bus;
Said central process unit is connected with sampling module, CAN communication module and control module communication respectively;
Further said central process unit is a micro controller system.
Further said sampling module comprises:
The plurality of voltages sampling module is used for the voltage of every lead-acid battery is sampled;
The multi way temperature sampling module is used for the temperature of every lead-acid battery is sampled;
The current sample module is used for the current value of lead-acid battery is sampled.
Further said current sample module comprises:
Multichannel current sample module is used for the current value of every lead-acid battery is sampled;
Single channel current sample module is used for the current value of single lead-acid battery is sampled.
Further said sampling module also comprises:
Whether the leakage current detect module is used to detect lead-acid battery and leaks electricity;
The charging induction module is used to judge the running condition of lead-acid battery;
Balance module is used for when difference appears in monomer lead-acid battery voltage, detects the monomer that voltage is higher than average, and it is discharged, thereby reaches portfolio effect;
The internal resistance detection module is used for that internal resistance detects to lead-acid battery.
Further said sampling module is connected with the lead-acid battery wire harness through plug-in unit with lead-acid battery.
Every battery cell voltage is gathered in further said plurality of voltages sampling; Every lead-acid battery needs two sample line, positive and negative each one, after the isolation of hardware circuit light lotus root is switched this cell pressure dividing potential drop, gets into the A/D chip; Through A/D chip output digital quantity; Digital quantity after the SPI communication is with the conversion of A/D chip gets into micro controller system, calculates monomer voltage by central process unit, monomer voltage is added up can obtain total voltage simultaneously.
Further said multi way temperature sampling module is gathered every battery cell temperature, introduces battery temperature and ambient temperature through temperature sensor, and digital quantity is calculated current temperature value by the micro controller system collection by micro controller system.
Further said current sample module converts the bus current signal into bus voltage signal through Hall element and related hardware circuit, through the A/D chip digital quantity is imported micro controller system, calculates current value by micro controller system.
Further said electronlmobil lead-acid battery management system also comprises relay control module, is used for power system is carried out safety connection and the safety cut-off that power system is guaranteed in precharge.
The invention has the beneficial effects as follows: the difficulty that administers and maintains that effectively solves lead-acid battery; Through detecting analog quantitys such as lead-acid battery voltage, electric current, temperature; Accurate estimating battery state is in time handled and is safeguarded the problem that occurs in the middle of the vehicle, can effectively protect battery; Delay the battery aging, fully prolong battery service life.
Description of drawings
Fig. 1 is an electronlmobil lead-acid battery intelligent management system structural representation;
Fig. 2 is that electronlmobil lead-acid battery intelligent management system connects the use scheme drawing.
The specific embodiment
The present invention provides a kind of electronlmobil lead-acid battery intelligent management system, and concrete technical scheme is following:
A kind of electronlmobil lead-acid battery intelligent management system comprises: central process unit, sampling module, CAN communication module and control module;
Said central process unit is used to receive the sampling module sampled signal, carries out computing, monitors battery and state of the system in real time, and will receive signal and the computing result is real-time transmitted to the CAN communication module, simultaneously the computing result is exported to control module;
Voltage, temperature and current signal that said sampling module is used for lead-acid battery are sampled;
Said CAN communication module is connected with battery charger and Full Vehicle System communication through the CAN bus;
Said central process unit is connected with sampling module, CAN communication module and control module communication respectively;
Further said central process unit is a micro controller system.
Further said sampling module comprises:
The plurality of voltages sampling module is used for the voltage of every lead-acid battery is sampled;
The multi way temperature sampling module is used for the temperature of every lead-acid battery is sampled;
The current sample module is used for the current value of lead-acid battery is sampled.
Further said current sample module comprises:
Multichannel current sample module is used for the current value of every lead-acid battery is sampled;
Single channel current sample module is used for the current value of single lead-acid battery is sampled.
Further said sampling module also comprises:
Whether the leakage current detect module is used to detect lead-acid battery and leaks electricity;
The charging induction module is used to judge the running condition of lead-acid battery;
Balance module is used for when difference appears in monomer lead-acid battery voltage, detects the monomer that voltage is higher than average, and it is discharged, thereby reaches portfolio effect;
The internal resistance detection module is used for that internal resistance detects to lead-acid battery.
Further said sampling module is connected with the lead-acid battery wire harness through plug-in unit with lead-acid battery.
Every battery cell voltage is gathered in further said plurality of voltages sampling; Every lead-acid battery needs two sample line, positive and negative each one, after the isolation of hardware circuit light lotus root is switched this cell pressure dividing potential drop, gets into the A/D chip; Through A/D chip output digital quantity; Digital quantity after the SPI communication is with the conversion of A/D chip gets into micro controller system, calculates monomer voltage by central process unit, monomer voltage is added up can obtain total voltage simultaneously.
Further said multi way temperature sampling module is gathered every battery cell temperature, introduces battery temperature and ambient temperature through temperature sensor, and digital quantity is calculated current temperature value by the micro controller system collection by micro controller system.
Further said current sample module converts the bus current signal into bus voltage signal through Hall element and related hardware circuit, through the A/D chip digital quantity is imported micro controller system, calculates current value by micro controller system.
Further said electronlmobil lead-acid battery management system also comprises relay control module, is used for power system is carried out safety connection and the safety cut-off that power system is guaranteed in precharge.
Concrete implementation procedure of the present invention is:
Like Fig. 1 and Fig. 2, system hardware adopts centralized solution, on same block of plate, realizes collection and the control algorithm and the communication function of analog quantity.Specifically comprise plurality of voltages collection, multichannel current acquisition, circuital current collection, relay control and return inspection, CAN communication module, detection of electrical leakage module, charging induction module, balance module.These modules all link to each other with central processing element, make control by control policy according to corresponding state simultaneously through software real-time detecting system state.This hardware outside connects the lead-acid battery wire harness by corresponding plug-in unit and gathers analog quantity, and by the CAN line with Full Vehicle System and battery charger communication.
System software load simulation amount is calculated, and the processing of control logic is with the CAN communication and the information interaction of Full Vehicle System.Specifically comprise state of the system calculating, high-voltage safety calculates, leakage current detect, system fault diagnosis algorithm, the detection of battery and electricity condition and estimation, the processing of CAN communication.Native system has sampling and controllable function, by CAN bus and battery charger and entire car controller communication.Sampling module is responsible for the collection of cell pressure, temperature, electric current, through the central processor unit computing, monitors battery and system operation situation in real time, and drives output.
System can accomplish the collection of each analog quantity of lead-acid battery, comprises monomer voltage, monomer temperature and bus current.Utilize these data to carry out the monitoring of state of the system and simultaneously to the control and the protection of battery.Each gathers analog quantity and central process unit computing result can show that said man-machine interface is electrically connected with central process unit through man-machine interface.
Plurality of voltages is gathered, and gathers the voltage of every battery cell.Because the lead-acid battery volume is bigger, distribute and possibly not concentrate at car load, many batteries are scattered in front deck, base plate and boot, its discharge current of while has bigger, so in order to reduce the rattail pressure drop, every battery needs two sample line, positive and negative each one.After the hardware circuit switches this cell pressure dividing potential drop, get into the A/D chip, through A/D conversion A/D chip output digital quantity, the digital quantity input micro controller system after via the SPI communication A/D chip being transformed can obtain total voltage being added up by the micro controller system monomer.
Every battery cell temperature is gathered in the multi way temperature sampling.Introduce battery temperature and ambient temperature through temperature sensor, transform through A/D digital quantity is imported micro controller system, calculate current temperature value by micro controller system.
Current sample, current sample can the current charging and discharging states of monitoring battery group, the charging and discharging currents size, and according to battery status, adjustment in time discharges and recharges maximum current limit with the protection battery.The accuracy of current sample directly has influence on battery and battery status simultaneously, and adjustment in time discharges and recharges maximum current limit and protects battery.The current sample accuracy directly has influence on the calculating of SOC simultaneously.This module realizes current acquisition through Hall element and related hardware circuit.
Current battery and state are calculated in SOC estimation, adopt open circuit voltage method and dutiful method when long-pending, and FUZZY ALGORITHMS FOR CONTROL is accomplished.
Whether detection of electrical leakage is used to detect battery and leaks electricity.
The CAN transceiver is responsible for receiving and is sent the CAN data, with the Full Vehicle System communication.
Charging is responded to, and is used to judge the running condition of battery.
Balance module is used for the maintenance of battery.The long-term use meeting causes the capacity of cell decay, and difference occurs between each monomer.This module can be higher than the average monomer by detection module voltage, and is flat to its discharge, thereby reaches portfolio effect.
Relay is controlled, and comprises the precharge and the safety cut-off function of power system.Pre-charging functions is used to guarantee the safety connection of power system, when the moment connection of whole power system, possibly cause the relay adhesion, so increase pre-charge-relay and pre-charge resistance.After receiving the power system close command, closed anodal relay breaks off pre-charge-relay afterwards earlier.When this management system detects major failure and when unusual, breaks off all relays, guarantee car load and personal security.
Combining accompanying drawing that the present invention has been carried out above is exemplary description; Show that the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as adopted method design of the present invention and technical scheme to carry out various improvement, or just directly applied to other occasion, be protection domain of the present invention without improving.
Claims (10)
1. an electronlmobil lead-acid battery intelligent management system is characterized in that, said electronlmobil lead-acid battery intelligent management system comprises: central process unit, sampling module, CAN communication module and control module;
Said central process unit is used to receive the sampling module sampled signal, carries out computing, monitors battery and state of the system in real time, and will receive signal and the computing result is real-time transmitted to the CAN communication module, simultaneously the computing result is exported to control module;
Voltage, temperature and current signal that said sampling module is used for lead-acid battery are sampled;
Said CAN communication module is connected with battery charger and Full Vehicle System communication through the CAN bus;
Said central process unit is connected with sampling module, CAN communication module and control module communication respectively.
2. electronlmobil lead-acid battery intelligent management system according to claim 1, it is characterized in that: said central process unit is a micro controller system.
3. electronlmobil lead-acid battery intelligent management system according to claim 1 is characterized in that said sampling module comprises:
The plurality of voltages sampling module is used for the voltage of every lead-acid battery is sampled;
The multi way temperature sampling module is used for the temperature of every lead-acid battery is sampled;
The current sample module is used for the current value of lead-acid battery is sampled.
4. like the said electronlmobil lead-acid battery of claim 3 intelligent management system, it is characterized in that said current sample module comprises:
Multichannel current sample module is used for the current value of every lead-acid battery is sampled;
Single channel current sample module is used for the current value of single lead-acid battery is sampled.
5. like the said electronlmobil lead-acid battery of claim 3 intelligent management system, it is characterized in that said sampling module also comprises:
Whether the leakage current detect module is used to detect lead-acid battery and leaks electricity;
The charging induction module is used to judge the running condition of lead-acid battery;
Balance module is used for when difference appears in monomer lead-acid battery voltage, detects the monomer that voltage is higher than average, and it is discharged, thereby reaches portfolio effect;
The internal resistance detection module is used for that internal resistance detects to lead-acid battery.
6. electronlmobil lead-acid battery intelligent management system according to claim 1, it is characterized in that: said sampling module is connected with the lead-acid battery wire harness through plug-in unit with lead-acid battery.
7. like the said electronlmobil lead-acid battery of claim 3 intelligent management system; It is characterized in that: said plurality of voltages sampling module is gathered every battery cell voltage; Every lead-acid battery needs two sample line, positive and negative each one, after the isolation of hardware circuit light lotus root is switched this cell pressure dividing potential drop, gets into the A/D chip; Through A/D chip output digital quantity; Digital quantity after the SPI communication is with the conversion of A/D chip gets into micro controller system, calculates monomer voltage by central process unit, monomer voltage is added up can obtain total voltage simultaneously.
8. like the said electronlmobil lead-acid battery of claim 3 intelligent management system; It is characterized in that: said multi way temperature sampling module is gathered every battery cell temperature; Introduce battery temperature and ambient temperature through temperature sensor, digital quantity is calculated current temperature value by the micro controller system collection by micro controller system.
9. like claim 3 or 4 said electronlmobil lead-acid battery intelligent management systems; It is characterized in that: said current sample module; Convert the bus current signal into bus voltage signal through Hall element and related hardware circuit; Through the A/D chip digital quantity is imported micro controller system, calculate current value by micro controller system.
10. electronlmobil lead-acid battery intelligent management system according to claim 1; It is characterized in that: said electronlmobil lead-acid battery management system also comprises relay control module, is used for power system is carried out safety connection and the safety cut-off that power system is guaranteed in precharge.
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| CN2012101492625A CN102673420A (en) | 2012-05-15 | 2012-05-15 | Intelligent management system of electric automobile lead-acid battery |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN103094632A (en) * | 2012-11-23 | 2013-05-08 | 苏州工业园区职业技术学院 | AGV (automatic guided vehicle) lead-acid battery intelligent management system and control method thereof |
| CN103986195A (en) * | 2013-02-07 | 2014-08-13 | 中国科学院金属研究所 | Lead-acid-storage-battery management system |
| CN104037465A (en) * | 2014-06-24 | 2014-09-10 | 杭州电子科技大学 | Intelligent charge control method for lead-acid battery |
| CN104267352A (en) * | 2014-09-28 | 2015-01-07 | 苏州克兰兹电子科技有限公司 | Multifunctional electric vehicle battery management system |
| CN104977534A (en) * | 2014-04-02 | 2015-10-14 | 鸿富锦精密工业（深圳）有限公司 | Method for estimating state-of-health of battery and device thereof |
| CN105703445A (en) * | 2016-04-12 | 2016-06-22 | 上海上实龙创智慧能源科技股份有限公司 | Intelligent mobile charging pile |
| CN106740592A (en) * | 2016-12-27 | 2017-05-31 | 安徽本纪智能科技有限公司 | A kind of intelligent comprehensive protection system of new-energy automobile |
| CN107612110A (en) * | 2017-08-15 | 2018-01-19 | 北京奥博汽车电子电器有限公司 | A kind of generator storage battery administration system of intelligent automobile storage battery administration |
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| CN103094632B (en) * | 2012-11-23 | 2015-03-18 | 苏州工业园区职业技术学院 | AGV (automatic guided vehicle) lead-acid battery intelligent management system and control method thereof |
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| CN104037465A (en) * | 2014-06-24 | 2014-09-10 | 杭州电子科技大学 | Intelligent charge control method for lead-acid battery |
| CN104267352A (en) * | 2014-09-28 | 2015-01-07 | 苏州克兰兹电子科技有限公司 | Multifunctional electric vehicle battery management system |
| CN105703445A (en) * | 2016-04-12 | 2016-06-22 | 上海上实龙创智慧能源科技股份有限公司 | Intelligent mobile charging pile |
| CN106740592A (en) * | 2016-12-27 | 2017-05-31 | 安徽本纪智能科技有限公司 | A kind of intelligent comprehensive protection system of new-energy automobile |
| CN108688469A (en) * | 2017-04-06 | 2018-10-23 | 上海蔚来汽车有限公司 | A kind of the operating on low voltage system and its control method of electric vehicle |
| CN108688469B (en) * | 2017-04-06 | 2023-05-12 | 上海蔚来汽车有限公司 | Low-voltage working system of electric automobile and control method thereof |
| CN107612110A (en) * | 2017-08-15 | 2018-01-19 | 北京奥博汽车电子电器有限公司 | A kind of generator storage battery administration system of intelligent automobile storage battery administration |
| CN108501723A (en) * | 2017-11-27 | 2018-09-07 | 安徽特凯新能源科技有限公司 | A kind of battery management system with error correcting capability |
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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 Applicant 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 Applicant before: Shenzhen GreenWheel Electric Vehicle Co., Ltd. |
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Application publication date: 20120919 Assignee: JIANGSU GREENWHEEL NEW ENERGY ELECTRIC VEHICLE CO., LTD. Assignor: SHENZHEN GREENWHEEL ELECTRIC VECHICLE GROUP CO., LTD. Contract record no.: 2015320000593 Denomination of invention: Intelligent management system of electric automobile lead-acid battery License type: Common License Record date: 20150918 |
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