CN102381264A - High-voltage system management module and management method thereof - Google Patents
High-voltage system management module and management method thereof Download PDFInfo
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- CN102381264A CN102381264A CN2011102801509A CN201110280150A CN102381264A CN 102381264 A CN102381264 A CN 102381264A CN 2011102801509 A CN2011102801509 A CN 2011102801509A CN 201110280150 A CN201110280150 A CN 201110280150A CN 102381264 A CN102381264 A CN 102381264A
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- 238000007726 management method Methods 0.000 title abstract 8
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 239000011449 brick Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 14
- 238000003745 diagnosis Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000001186 cumulative effect Effects 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 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
- 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
Abstract
The invention relates to a high-voltage system management module and a management method thereof, which are used in high-voltage system of an electric car; the high-voltage system management module comprises an ADUC70** chip, an MCU and a battery management system; the ADUC70** chip is used for detecting conditions of battery charging and discharging currents, battery pack terminal voltage, high-voltage bus voltage and insulation resistance; the ADUC70** chip is connected with the MCU on the isolation side in communication way; the MCU is used for receiving and comprehensively processing information of the ADUC70** chip, is connected with the battery management system in communication way, and is used for sending conditions of battery charging and discharging accumulated capacity, the battery pack terminal voltage, the high-voltage bus voltage and the insulation resistance to the battery management system.
Description
Technical field
The invention belongs to the new-energy automobile field, be specifically related to a kind of high-pressure system safety management module and management process thereof.
Background technology
Follow development of global economy, the consumption of petroleum amount increases day by day, and oil is as non-renewable resources; What just becoming is in short supply day by day, and under such overall situation, various new-energy automobiles arise at the historic moment; Particularly oil electric mixed dynamic automobile, hybrid vehicle; Vigorously advocate in country under the form of low-carbon (LC) life universal day by day because the mixed power electric car power system is different from traditional fuel-engined vehicle, the general high-pressure system that goes up hectovolt even several hectovolts that exists of car load; Therefore, how to use, keep in repair the emphasis problem that mixed power electric car becomes each big automobile vendor thinking safely.
For guaranteeing the battery system high-voltage safety, a kind of safety management module of high-pressure system need be provided, monitoring battery system important parameter is used for the high-pressure system diagnosis, guarantees the high-pressure system safe operation.
Summary of the invention
The objective of the invention is to adopt modular design; Focus in the module relating to high-voltage part unification in the battery management system; Take such method of designing to be convenient to high-pressure system unified management, design, high pressure, low-pressure system are thoroughly isolated separately, strengthened the reliability of system.Adopt such design to be convenient to install; This module is fixedly mounted on high-tension battery bag inside; Can make things convenient for the design of wire harness; The design of design plan high-pressure modular in the past and low-voltage module causes the difficulty of strand design easily on a pcb board, even high and low pressure signal wire harness can occur and appear at a phenomenon on the plug-in unit, and the design's innovation has solved this problem.
ADuC70** (a chip of american semiconductor company) is to the detection of the charging and discharging currents of battery, power brick terminal voltage, high voltage bus voltage, insulation resistance; MCU (micro controller system) communication through SPI (SPI) communication interface and side of isolation; MCU sends to battery management system with the cumulative capacity that discharges and recharges, power brick terminal voltage, high voltage bus voltage, the insulation resistance of battery through the CAN interface; Battery management system is according to self algorithm; Comprehensive judgement is used for security diagnostics, battery remaining power calculating, battery life estimation, the estimation of battery health degree, and the diagnosis of HVDC contactless switch.
Concrete technical scheme is following:
A kind of high-pressure system safety management module; The high-pressure system that is used for electronlmobil; Comprise ADUC70**; Charging and discharging currents, power brick terminal voltage, high voltage bus voltage, insulation resistance situation that MCU and battery management system, said ADUC70** are used for battery detect, and said ADUC70** is connected with the MCU communication of side of isolation; Said MCU is used to receive the information of ADUC70** and carries out comprehensive treatment, and its communication connects said battery management system and is used for the cumulative capacity that discharges and recharges, power brick terminal voltage, high voltage bus voltage, the insulation resistance situation of battery are sent to battery management system.
Further, said battery management system is used for comprehensively judging according to preset algorithm, is used for security diagnostics, battery remaining power calculating, battery life estimation, the estimation of battery health degree, and the diagnosis of HVDC contactless switch.
Further, also comprise the SPI communication interface, said ADUC70** is connected with the MCU communication of side of isolation through the SPI communication interface.
Further, also comprise the CAN interface, MCU connects battery management system through the CAN interface communication.
Further, said ADUC70** inside is integrated with the high-precision adc that 16 potential differences are divided input.
Further, said ADUC70** comprises an inspection flow module, and this inspection flow module is used for through the external diverter, converts big current signal to light current and presses signal, and the power brick charging and discharging currents is detected in real time.
Further, said ADUC70** comprises an Ah integration module, and this Ah integration module is used for the capacity of real-time counting cell bag charging, discharge is detected in real time.
Further, said ADUC70** comprises a detection of electrical leakage module, and this detection of electrical leakage module is used for detecting in real time insulation resistance.
Further, said ADUC70** comprises a high pressure detection module, and it is used to detect power brick terminal voltage, high voltage bus voltage.
The management process of above-mentioned high-pressure system safety management module, adopt following steps:
(1) ADUC70** detects charging and discharging currents, power brick terminal voltage, high voltage bus voltage, the insulation resistance of battery;
(2) ADUC70** sends through the MCU communication and the information of carrying out of SPI communication interface and side of isolation;
(3) MCU is according to the information that receives, comprehensive treatment;
(4) MCU sends to battery management system with the cumulative capacity that discharges and recharges, power brick terminal voltage, high voltage bus voltage, the insulation resistance of battery through the CAN interface;
(5) battery management system is judged according to self preset algorithm, carries out that security diagnostics, battery remaining power calculate, battery life estimation, the estimation of battery health degree, and the diagnosis of HVDC contactless switch.
Compare with present prior art; The present invention has adopted modular design; Focus in the module relating to high-voltage part unification in the battery management system; Take such method of designing to be convenient to high-pressure system unified management, design, high pressure, low-pressure system are thoroughly isolated separately, strengthened the reliability of system.Adopt such design to be convenient to install, this module be fixedly mounted on high-tension battery bag inside, can make things convenient for the design of wire harness,
Description of drawings
Fig. 1 is the system chart of high pressure administration module
Fig. 2 is high pressure management modular system block diagram
The specific embodiment
Describe the present invention according to accompanying drawing below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.
The present invention provides a kind of solution that is used for the high-voltage safety management; This system can realize that the high voltage power battery charge is carried out real-time high-precision to be detected; Simultaneously can detect power brick voltage (PackVoltage), high voltage bus terminal voltage (LinkVoltage), high pressure detection of electrical leakage etc.Through detection, can the cumulative capacity of power brick be calculated, thereby can reduce the computational load of battery management system MCU the battery charging and discharging electric current.Through detection to power brick terminal voltage, high voltage bus voltage; Can realize diagnosis function to high-voltage relay; The function of high pressure detection of electrical leakage can detect the insulating resistance value of high-pressure system to vehicle body in real time, thereby reduced the risk that high pressure electric shock, high pressure damage the car load low-voltage electrical apparatus.
Innovative point of the present invention is to have adopted modular design; Focus in the module relating to high-voltage part unification in the battery management system; Take such method of designing to be convenient to high-pressure system unified management, design; High pressure, low-pressure system are thoroughly isolated separately, strengthened the reliability of system.Adopt such design to be convenient to install; This module is fixedly mounted on high-tension battery bag inside; Can make things convenient for the design of wire harness; The design of design plan high-pressure modular in the past and low-voltage module causes the difficulty of strand design easily on a pcb board, even high and low pressure signal wire harness can occur and appear at a phenomenon on the plug-in unit, and the design's innovation has solved this problem.
Shown in Figure 1 is the system chart of high pressure administration module, has designed the signal link of high pressure management inside modules in the block diagram, has demonstrated the mode that systemic-function realizes.
Inner integrated 16 potential differences of special chip (ASIC) are divided the high-precision adc (modulus conversion chip) of input; Adopt the mode of diverter that the power brick charging and discharging currents is detected, this mode is compared with Hall element, has reduced system cost; Reduced nonlinearity erron; This error calibration correction is difficulty very, and adopts diverter through the correction-compensation to linearity error, can obtain high-precision observed reading.
Inner also integrated 16 ADC of ASIC is to the power brick total voltage, and high voltage bus voltage is measured, and adopts one tunnel outside ADC that gorgeous resistance value is extremely detected.
Shown in Figure 2 is that high pressure is managed the modular system block diagram; Demonstrated the function of high pressure administration module; The inspection flow module is through the external diverter; Convert big current signal to light current and press signal, the power brick charging and discharging currents is detected in real time the capacity that the Ah integration module is charged, discharged real-time counting cell bag.The detection of electrical leakage module detects insulation resistance in real time, and the high pressure detection module detects power brick terminal voltage, high voltage bus voltage respectively.
ADUC70** is to the detection of the charging and discharging currents of battery, power brick terminal voltage, high voltage bus voltage, insulation resistance, and through the MCU communication of SPI communication interface and side of isolation, MCU is according to the information that receives, comprehensive treatment.
MCU sends to battery management system with the cumulative capacity that discharges and recharges, power brick terminal voltage, high voltage bus voltage, the insulation resistance of battery through the CAN interface; Battery management system is according to self algorithm; Comprehensive judgement; Be used for security diagnostics, battery remaining power calculating, battery life estimation, the estimation of battery health degree, and the diagnosis of HVDC contactless switch etc.
Combine accompanying drawing that the present invention has been carried out exemplary description above; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; Or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (10)
1. high-pressure system safety management module; It is characterized in that; The high-pressure system that is used for electronlmobil comprises the ADUC70** chip, MCU and battery management system; Charging and discharging currents, power brick terminal voltage, high voltage bus voltage, insulation resistance situation that said ADUC70** chip is used for battery detect; Said ADUC70** chip is connected with the MCU communication of side of isolation, and said MCU is used to receive the information of ADUC70** chip and carries out comprehensive treatment, and its communication connects said battery management system and is used for the cumulative capacity that discharges and recharges, power brick terminal voltage, high voltage bus voltage, the insulation resistance situation of battery are sent to battery management system.
2. high-pressure system safety management module as claimed in claim 1; It is characterized in that; Said battery management system is used for comprehensively judging according to preset algorithm; Be used for security diagnostics, battery remaining power calculating, battery life estimation, the estimation of battery health degree, and the diagnosis of HVDC contactless switch.
3. according to claim 1 or claim 2 high-pressure system safety management module is characterized in that, also comprises the SPI communication interface, and said ADUC70** chip is connected with the MCU communication of side of isolation through the SPI communication interface.
4. like each described high-pressure system safety management module among the claim 1-3, it is characterized in that, also comprise the CAN interface, MCU connects battery management system through the CAN interface communication.
5. like each described high-pressure system safety management module among the claim 1-4, it is characterized in that said ADUC70** chip internal is integrated with the high-precision adc that 16 potential differences are divided input.
6. like each described high-pressure system safety management module among the claim 1-5; It is characterized in that; Said ADUC70** chip comprises an inspection flow module; This inspection flow module is used for through the external diverter, converts big current signal to light current and presses signal, and the power brick charging and discharging currents is detected in real time.
7. like each described high-pressure system safety management module among the claim 1-6, it is characterized in that said ADUC70** chip comprises an Ah integration module, this Ah integration module is used for the capacity of real-time counting cell bag charging, discharge is detected in real time.
8. like each described high-pressure system safety management module among the claim 1-7, it is characterized in that said ADUC70** chip comprises a detection of electrical leakage module, this detection of electrical leakage module is used for detecting in real time insulation resistance.
9. like each described high-pressure system safety management module among the claim 1-7, it is characterized in that said ADUC70** chip comprises a high pressure detection module, it is used to detect power brick terminal voltage, high voltage bus voltage.
10. like the management process of the said high-pressure system safety management module of claim 1-9, it is characterized in that, adopt following steps:
(1) the ADUC70** chip detects charging and discharging currents, power brick terminal voltage, high voltage bus voltage, the insulation resistance of battery;
(2) the ADUC70** chip sends through the MCU communication and the information of carrying out of SPI communication interface and side of isolation;
(3) MCU is according to the information that receives, comprehensive treatment;
(4) MCU sends to battery management system with the cumulative capacity that discharges and recharges, power brick terminal voltage, high voltage bus voltage, the insulation resistance of battery through the CAN interface;
(5) battery management system is judged according to self preset algorithm, carries out that security diagnostics, battery remaining power calculate, battery life estimation, the estimation of battery health degree, and the diagnosis of HVDC contactless switch.
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| CN2011102801509A CN102381264B (en) | 2011-09-20 | 2011-09-20 | High-voltage system management module and management method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106443274A (en) * | 2016-10-31 | 2017-02-22 | 北京新能源汽车股份有限公司 | Detection device and detection method for electric vehicle high voltage system |
| CN106828150A (en) * | 2016-12-31 | 2017-06-13 | 惠州市蓝微新源技术有限公司 | A kind of discrete battery management system |
| CN107426853A (en) * | 2017-05-08 | 2017-12-01 | 深圳源创智能照明有限公司 | A kind of the LED Solar Light circuit |
| CN108712974A (en) * | 2017-02-07 | 2018-10-26 | 大众汽车有限公司 | Vehicle side conduction charging unit, electric vehicle and the method that charging unit is conducted for operating vehicle side |
| CN109597334A (en) * | 2018-12-05 | 2019-04-09 | 合肥能安科技有限公司 | A kind of Internet of Things intelligent monitoring device of electric vehicle |
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| CN109597334A (en) * | 2018-12-05 | 2019-04-09 | 合肥能安科技有限公司 | A kind of Internet of Things intelligent monitoring device of electric vehicle |
| CN109597334B (en) * | 2018-12-05 | 2020-10-16 | 湖北遇亦道科技有限公司 | Internet of things intelligent monitoring device of electric vehicle |
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| CN102381264B (en) | 2013-11-20 |
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