CN108711644B - Battery management system supporting automatic detection function - Google Patents
Battery management system supporting automatic detection function Download PDFInfo
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- CN108711644B CN108711644B CN201810516962.0A CN201810516962A CN108711644B CN 108711644 B CN108711644 B CN 108711644B CN 201810516962 A CN201810516962 A CN 201810516962A CN 108711644 B CN108711644 B CN 108711644B
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- 238000001514 detection method Methods 0.000 title claims abstract description 202
- 230000006854 communication Effects 0.000 claims abstract description 41
- 238000004891 communication Methods 0.000 claims abstract description 41
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 230000003993 interaction Effects 0.000 claims abstract description 5
- 238000007726 management method Methods 0.000 claims description 32
- 238000012790 confirmation Methods 0.000 claims description 26
- 238000002955 isolation Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 230000007175 bidirectional communication Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 claims description 3
- 238000013500 data storage Methods 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
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- 230000008569 process Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 1
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Abstract
The invention discloses a battery management system supporting an automatic detection function, which comprises a main control unit, a detection parameter storage unit, a detection connection guide circuit unit, a charge and discharge control unit, a CAN communication unit and a state monitoring unit. The battery management system supporting the automatic detection function can automatically detect whether the outside is connected with the detection device and the detection device category and enter a corresponding detection state; the CAN communication or PWM communication CAN carry out bidirectional interaction with the detection equipment, and corresponding detection parameter configuration and detection flow control are carried out, so that the detection flow and complicated detection parameter setting are simplified, automatic detection is realized, and the cost of manpower and material resources is saved.
Description
Technical Field
The invention relates to the field of power battery management systems, in particular to a battery management system supporting an automatic detection function.
Background
The battery management system is used as one of key components for monitoring and using and managing the state of the power battery, and plays an important role in improving the utilization rate of the power battery, preventing the power battery from being overcharged and overdischarged, prolonging the service life of the power battery, monitoring the health state of the power battery and the like. In order to accurately acquire the electrical performance of the power battery and improve the effectiveness and accuracy of the battery management system on the power battery management, the power battery needs to be detected, such as capacity detection, SOC precision correction, SOH precision correction and the like of the power battery. However, in the existing power battery detection process, after the power battery detection equipment is manually connected with the battery, the detection equipment and the battery management system are manually set to enter a detection state, corresponding detection parameters are manually set, the participation degree of the battery management system is not high, and the entering of the detection state cannot be automatically confirmed; and some parameters related to detection such as battery protection parameters, charge and discharge cut-off conditions, standard charging methods and other battery manufacturers are inconsistent, so that the parameters need to be manually acquired before detection, the detection process is complex to set, and professional staff is required to carry out the detection, so that time and labor are wasted. Therefore, a battery management system is urgently needed, which can automatically detect whether the outside is connected with a detection device and the type of the detection device to enter a corresponding detection state, and can perform bidirectional interaction with detection equipment and corresponding detection parameter configuration and detection flow control, so that the detection flow and complicated detection parameter setting are simplified, automatic detection is realized, and the cost of manpower and material resources is saved.
Disclosure of Invention
According to the technical problem, the invention provides a battery management system supporting an automatic detection function, which is mainly used for carrying out state confirmation on a guide circuit unit and detection equipment, and carrying out bidirectional interaction on the guide circuit unit or the CAN communication unit, so as to set detection parameters and realize automatic detection. The technical means adopted by the invention are as follows.
A battery management system supporting an automatic detection function, the battery management system comprising: the device comprises a main control unit, a detection parameter storage unit, a detection connection guide circuit unit, a charge and discharge control unit, a CAN communication unit and a state monitoring unit; the detection control unit CAN automatically identify an external detection device through the detection connection guide circuit unit and perform bidirectional communication with the external detection device through the CAN communication unit or the detection connection guide circuit unit; the main control unit can control the charge and discharge control unit and the state monitoring unit to enter a detection state according to the instruction of the detection control unit; the detection control unit can read and write the detection parameters in the detection parameter storage unit, automatically configure an external detection device in the two-way communication mode, and automatically control the detection flow. The detection state in the invention refers to a state matched with an external detection device and a pre-detection item, such as: when the external access insulation detection device measures the insulation of the charging loop of the battery system, the detection state refers to a state that the charging relay is closed by the charging and discharging control unit, so that the external detection device is conducted with the charging loop of the battery system, and the internal insulation collection is cut off by the state monitoring unit.
Preferably, the detection control unit comprises an internal communication port, a CAN communication port, a state control port, a state detection port and a data read-write port; the detection connection guide circuit unit comprises a connection confirmation signal port, a grounding switch, a current-limiting resistor, a low-voltage power supply, a grounding terminal, a grounding resistor, an isolation module and a signal acquisition module. It should be noted that, the port according to the present invention is a functional interface, and physically includes one or more wire connection terminals.
Preferably, the connection confirmation signal port is electrically connected with the state detection port of the detection control unit through the signal acquisition module; the grounding terminal is electrically connected with the connection confirmation signal port through a grounding resistor and a grounding switch; the low-voltage power supply is electrically connected with the connection confirmation signal port through a current limiting resistor; the control end of the grounding switch is electrically connected with the state control port of the detection control unit through the isolation module; the CAN communication port is electrically connected with the CAN communication unit; the internal communication port is electrically connected with the main control unit through a data bus; the data read-write port is electrically connected with the detection parameter storage unit through a data bus.
Preferably, the detection control unit can periodically turn on and off the ground switch through the state control port, thereby generating a PWM signal at the connection confirmation signal port, and can obtain the voltage, frequency, duty ratio value of the connection confirmation signal port through the state detection port. When in practical application, different detection devices are defined to generate different voltage, frequency and duty ratio values at the detection connection confirmation signal port, so that the detection control unit can identify the connected detection equipment; meanwhile, the detection control unit can also generate PWM signals at the connection confirmation signal port, different PWM duty ratios or different PWM frequency representations are defined, and further bidirectional communication can be achieved.
Preferably, the charge-discharge control unit comprises a charge relay, a discharge relay and a corresponding relay driving circuit, and can be used for switching on and off the charge relay or the discharge relay according to the instruction of the main control unit; the state monitoring unit can selectively monitor the total voltage, the single voltage, the battery temperature, the insulation resistance value and the charge-discharge current of the battery according to the instruction of the main control unit, and sends monitoring data to the main control unit in real time. The main control unit can receive the monitoring data and perform fault diagnosis and calculation of battery SOC and SOH state information.
Preferably, the voltage value of the low-voltage source is 9-36V; the resistance value of the current limiting resistor is 0.1-5kΩ; the resistance value of the grounding resistor is 1-10kΩ; the isolation module is a photoelectric isolation module; the signal acquisition module is a voltage signal operational amplifier circuit; the grounding switch is a solid-state relay, a MOSFET, a triode or an IGBT.
Preferably, the main control unit and the detection control unit are MCU, DSP or FPGA; the main control unit and the detection control unit can be integrated on the same physical chip.
Preferably, the data bus is SPI, IIC, SCI or one of any manner of enabling data and instruction interaction.
Preferably, the detection parameter storage unit is one of an EEPROM, a TF card, an SD card, or any medium capable of realizing data storage.
The invention has the advantages that the detection device and the type of the externally connected battery system can be automatically identified, and the automatic configuration and the detection flow control can be carried out according to the parameters preset by the detection parameter storage unit, thereby improving the detection efficiency of the battery system; because the detection parameters are set in advance, the manual setting of professionals is not needed during detection, the investment of related professionals can be reduced, the detection threshold is lowered, and the detection cost is further lowered; meanwhile, an independent detection control unit is arranged, so that the burden of the detection process on other units of the system is avoided, and the stability of the system is enhanced.
Drawings
Fig. 1 is a schematic diagram of a battery management system supporting an automatic detection function according to the present invention.
Fig. 2 is a schematic circuit diagram of a main control unit, a detection control unit, and a detection parameter storage unit in the battery management system according to embodiment 1 of the present invention.
Fig. 3 is a circuit diagram of a detection connection guide circuit unit in the battery management system of embodiment 1 of the present invention.
Fig. 4 is a schematic circuit diagram of a main control unit, a detection control unit, and a detection parameter storage unit in the battery management system according to embodiment 2 of the present invention.
Fig. 5 is a circuit diagram of a detection connection guide circuit unit in the battery management system of embodiment 2 of the present invention.
In the figure, 1, a main control unit, 2, a detection control unit, 3, a detection parameter storage unit, 4, a detection connection guide circuit unit, 5, a charge and discharge control unit, 6, a CAN communication unit, 7, a state monitoring unit, 8, a connection confirmation signal port, 9, a grounding switch, 10, a current limiting resistor, 11, a low voltage source, 12, a grounding terminal, 13, a grounding resistor, 14, an isolation module, 15, a signal acquisition module, 16, an internal communication port, 17, a CAN communication port, 18, a state control port, 19, a state detection port, 20 and a data read-write port.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Referring to fig. 1, a battery management system supporting an automatic detection function includes: the device comprises a main control unit 1, a detection control unit 2, a detection parameter storage unit 3, a detection connection guide circuit unit 4, a charge and discharge control unit 5, a CAN communication unit 6 and a state monitoring unit 7; the detection control unit 2 CAN automatically identify an external detection device through the detection connection guide circuit unit 4 and perform bidirectional communication with the external detection device through the CAN communication unit 6 or the detection connection guide circuit unit 4; the main control unit 1 can control the charge and discharge control unit 5 and the state monitoring unit 7 to enter a detection state according to the instruction of the detection control unit; the detection control unit 2 can read and write the detection parameters in the detection parameter storage unit 3, automatically configure an external detection device in the two-way communication mode, and automatically control a detection flow.
The detection control unit comprises an internal communication port 16, a CAN communication port 17, a state control port 18, a state detection port 19 and a data read-write port 20; the detection connection guide circuit unit comprises a connection confirmation signal port 8, a grounding switch 9, a current-limiting resistor 10, a low-voltage source 11, a grounding terminal 12, a grounding resistor 13, an isolation module 14 and a signal acquisition module 15. The connection confirmation signal port 18 is electrically connected with the state detection port 19 of the detection control unit 2 through the signal acquisition module 15; the grounding terminal 12 is electrically connected with the connection confirmation signal port 8 through the grounding resistor 13 and the grounding switch 9; the low-voltage power supply 11 is electrically connected with the connection confirmation signal port 8 through a current limiting resistor 12; the control end of the grounding switch 9 is electrically connected with a state control port 18 of the detection control unit 2 through the isolation module 14; the CAN communication port 17 is electrically connected with the CAN communication unit 6; the internal communication port 16 is electrically connected with the main control unit through a data bus; the data read/write port 20 is electrically connected with the detection parameter storage unit 3 through a data bus. The detection control unit 2 can periodically turn on and off the ground switch 9 through the state control port 18 to generate a PWM signal at the connection confirmation signal port 8, and can obtain the voltage, frequency, duty ratio value of the connection confirmation signal port 8 through the state detection port 19.
Example 1
Referring to fig. 2 and 3, a battery management system supporting an automatic detection function is shown, a main control unit 1 adopts a DSP, a detection control unit 2 adopts an MCU, a detection parameter storage unit is an EEPROM, and the main control unit 1 and the detection control unit 2 physically adopt two independent chips. The internal communication port 16 of the detection control unit 2 is connected with the main control unit 1 by adopting an SPI bus; the data read-write port 20 of the detection control unit 2 is connected with the detection parameter storage unit 2 by adopting an IIC bus. In the detection connection guide circuit unit 4, the voltage value of the low-voltage power source 11 is 12V; the resistance value of the current limiting resistor 10 is 1kΩ; the resistance value of the grounding resistor 13 is 1kΩ; the isolation module 14 is a photoelectric isolation circuit; the signal acquisition module 15 is a voltage signal operational amplifier circuit; the ground switch 9 is a triode.
The battery management system of the present embodiment further includes a charge and discharge control unit 5, a CAN communication unit 6, and a state monitoring unit 7. The charge-discharge control unit 5 comprises a charge relay, a discharge relay and a relay control circuit; during detection, the battery charging relay and the discharging relay can be selectively closed or opened according to the instruction of the main control unit 1 according to the type and the detection item of the detection device, so that the detection end of the detection device is connected or disconnected with the anode and the cathode of the battery. The state monitoring unit 7 includes a monitoring circuit for variables such as total voltage, cell voltage, current, temperature, insulation, etc., and is capable of selectively monitoring the total voltage of the battery, cell voltage, battery temperature, insulation resistance value, charge and discharge current according to the instruction of the main control unit 1, and transmitting monitoring data to the DSP in real time. The DSP can perform fault diagnosis and calculation of state information such as battery SOC, SOH and the like according to the received monitoring data.
By adopting the battery management system of the embodiment, the MCU is used for monitoring the voltage value and the PWM duty ratio of the connection confirmation signal port 8 in real time, and automatically identifying the externally connected battery system detection device and the type; when the detection device and the type of the external battery system are identified, the MCU sends detection related instructions to the DSP through the SPI bus by an internal communication port, and the DSP controls the charge and discharge control unit 5 and the state monitoring unit 7 to enter corresponding detection states after receiving the instructions; meanwhile, according to preset parameters in the EEPROM, PWM signals are generated at the connection confirmation signal port 8 to interact with an external detection device by periodically changing the on and off states of the triode, and when the external detection device is provided with CAN communication, the MCU interacts with the external detection device through the CAN communication unit 6 through the CAN communication port 17 at the same time, so that the detection parameters are automatically configured and the detection flow is controlled.
By adopting the battery management system of the embodiment, the detection device and the category can be automatically identified, the detection parameters and the control detection flow can be automatically set, and the detection efficiency of the battery system is improved; meanwhile, an independent detection control unit is arranged, so that the burden of the detection process on other units of the system is avoided, and the stability of the system is enhanced.
Example 2
Referring to fig. 4 and 5, in a battery management system supporting an automatic detection function, a master control unit 1 and a detection control unit 2 both adopt MCUs, a detection parameter storage unit is an SD card, the master control unit 1 and the detection control unit 2 are physically integrated in the same chip package, a MC9S12XEP100 chip is adopted in the specific example, the master control unit 1 is a master controller, and the detection control unit 2 is a slave controller. The internal communication port 16 of the detection control unit 2 is connected with the main control unit 1 by adopting an internal bus; the data read-write port 20 of the detection control unit 2 is connected with the detection parameter storage unit 3 by adopting an SPI bus. In the detection connection guide circuit unit 4, the voltage value of the low-voltage power source 11 is 24V; the resistance value of the current limiting resistor 10 is 1.5kΩ; the resistance value of the grounding resistor 13 is 2kΩ; the isolation module 14 is a photoelectric isolation circuit; the signal acquisition module 15 is a voltage signal operational amplifier circuit; the ground switch 9 is a MOSFET.
Other portions of the battery management system of this embodiment are identical to those of the first embodiment.
By adopting the battery management system of the embodiment, the slave controller monitors the voltage value and the PWM duty ratio of the connection confirmation signal port 8 in real time, and automatically identifies the externally connected battery system detection device and the type; when the detection device and the type of the external battery system are identified, the slave controller sends detection related instructions to the master controller through an internal communication port and an internal bus, and the master controller controls the charge and discharge control unit 5 and the state monitoring unit 7 to enter corresponding detection states after receiving the instructions; meanwhile, according to preset parameters in the SD card, the on and off of the MOSFET are periodically changed, PWM signals are generated at the connection confirmation signal port 8 to interact with an external detection device, and when the external detection device is provided with CAN communication, the slave controller interacts with the external detection device through the CAN communication port 17 and the CAN communication unit 6, so that the detection parameters are automatically configured and the detection flow is controlled.
By adopting the battery management system of the embodiment, the detection device and the type of the externally connected battery system can be automatically identified, and the automatic configuration and detection flow control can be performed according to the preset parameters in the SD card, so that the detection efficiency of the battery system is greatly improved; because the SD card is adopted, the detection parameters are preset and are convenient to update, so that the investment of related professionals can be reduced, the detection threshold is lowered, and the detection cost is further lowered.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. A battery management system supporting an automatic detection function, the battery management system comprising: the device comprises a main control unit, a detection parameter storage unit, a detection connection guide circuit unit, a charge and discharge control unit, a CAN communication unit and a state monitoring unit; the detection control unit comprises an internal communication port, a CAN communication port, a state control port, a state detection port and a data read-write port; the detection connection guide circuit unit comprises a connection confirmation signal port, a grounding switch, a current-limiting resistor, a low-voltage power supply, a grounding terminal, a grounding resistor, an isolation module and a signal acquisition module;
the connection confirmation signal port is electrically connected with the state detection port of the detection control unit through the signal acquisition module; the grounding terminal is electrically connected with the connection confirmation signal port through a grounding resistor and a grounding switch; the low-voltage power supply is electrically connected with the connection confirmation signal port through a current limiting resistor; the control end of the grounding switch is electrically connected with the state control port of the detection control unit through the isolation module; the CAN communication port is electrically connected with the CAN communication unit; the internal communication port is electrically connected with the main control unit through a data bus; the data read-write port is electrically connected with the detection parameter storage unit through a data bus;
The charging and discharging control unit comprises a charging relay and a discharging relay, and can be used for switching on or switching off the charging relay or the discharging relay according to the instruction of the main control unit; the detection control unit can periodically turn on and off the grounding switch through the state control port so as to generate PWM signals at the connection confirmation signal port, and can obtain the voltage, frequency and duty ratio of the connection confirmation signal port through the state detection port so as to realize bidirectional communication;
The state monitoring unit can selectively monitor the total voltage, the single voltage, the battery temperature, the insulation resistance value and the charge-discharge current of the battery according to the instruction of the main control unit, and sends monitoring data to the main control unit in real time; the main control unit can receive the monitoring data and perform fault diagnosis and calculation of battery SOC and SOH state information;
the main control unit can control the charge-discharge control unit to switch on or off the charge relay or the discharge relay according to the instruction of the detection control unit, and simultaneously control the state monitoring unit to monitor the total voltage, the single voltage, the battery temperature, the insulation resistance value and the charge-discharge current of the battery so as to enter a detection state; the detection control unit can read and write the detection parameters in the detection parameter storage unit, automatically configure an external detection device in the two-way communication mode, and automatically control the detection flow.
2. A battery management system supporting an automatic detection function according to claim 1, wherein: the voltage value of the low-voltage source is 9-36V; the resistance value of the current limiting resistor is 0.1-5 kΩ; the resistance value of the grounding resistor is 1-10kΩ; the isolation module is a photoelectric isolation module; the signal acquisition module is a voltage signal operational amplifier circuit; the grounding switch is a solid-state relay, a MOSFET, a triode or an IGBT.
3. A battery management system supporting an automatic detection function according to claim 1, wherein: the main control unit and the detection control unit are MCU, FPGA or DSP; the main control unit and the detection control unit can be integrated on the same physical chip.
4. A battery management system supporting an automatic detection function according to claim 1, wherein: the data bus is SPI, IIC, SCI or any one of the ways in which data and instruction interaction can be implemented.
5. A battery management system supporting an automatic detection function according to claim 1, wherein: the detection parameter storage unit is one of EEPROM, TF card, SD card or any medium capable of realizing data storage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516962.0A CN108711644B (en) | 2018-05-26 | Battery management system supporting automatic detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516962.0A CN108711644B (en) | 2018-05-26 | Battery management system supporting automatic detection function |
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| CN108711644A CN108711644A (en) | 2018-10-26 |
| CN108711644B true CN108711644B (en) | 2024-05-31 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615704A (en) * | 2008-06-27 | 2009-12-30 | 山东申普汽车控制技术有限公司 | Has the storage battery of automatic detection control function and to the control method of storage battery |
| CN101834457A (en) * | 2010-04-30 | 2010-09-15 | 重庆长安汽车股份有限公司 | Lithium battery management system |
| CN201667370U (en) * | 2009-12-28 | 2010-12-08 | 南昌大学 | Power battery management device |
| CN102738525A (en) * | 2012-06-14 | 2012-10-17 | 沈阳中科正方新能源技术有限公司 | Battery management system of vehicle-mounted lithium power battery |
| CN104483645A (en) * | 2014-12-18 | 2015-04-01 | 重庆长安汽车股份有限公司 | Detection device for battery management system |
| CN208655826U (en) * | 2018-05-26 | 2019-03-26 | 王正权 | A kind of battery management system for supporting automatic detection function |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615704A (en) * | 2008-06-27 | 2009-12-30 | 山东申普汽车控制技术有限公司 | Has the storage battery of automatic detection control function and to the control method of storage battery |
| CN201667370U (en) * | 2009-12-28 | 2010-12-08 | 南昌大学 | Power battery management device |
| CN101834457A (en) * | 2010-04-30 | 2010-09-15 | 重庆长安汽车股份有限公司 | Lithium battery management system |
| CN102738525A (en) * | 2012-06-14 | 2012-10-17 | 沈阳中科正方新能源技术有限公司 | Battery management system of vehicle-mounted lithium power battery |
| CN104483645A (en) * | 2014-12-18 | 2015-04-01 | 重庆长安汽车股份有限公司 | Detection device for battery management system |
| CN208655826U (en) * | 2018-05-26 | 2019-03-26 | 王正权 | A kind of battery management system for supporting automatic detection function |
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Effective date of registration: 20200108 Address after: 116000 room 5619, no.9-1, Haifu Road, Dalian Free Trade Zone, China (Liaoning) pilot Free Trade Zone, Dalian City, Liaoning Province Applicant after: Mingyuan Technology (Dalian) Co.,Ltd. Address before: 116000 21, 3-60, Guoan residential district, Hongqi Street, Ganjingzi District, Dalian, Liaoning Applicant before: Wang Zhengquan |
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