CN107797076A - A kind of automobile batteries Current Voltage detection device based on isolation coupling device - Google Patents
A kind of automobile batteries Current Voltage detection device based on isolation coupling device Download PDFInfo
- Publication number
- CN107797076A CN107797076A CN201711319856.5A CN201711319856A CN107797076A CN 107797076 A CN107797076 A CN 107797076A CN 201711319856 A CN201711319856 A CN 201711319856A CN 107797076 A CN107797076 A CN 107797076A
- Authority
- CN
- China
- Prior art keywords
- isolation
- unit
- voltage
- current
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 230000008878 coupling Effects 0.000 title claims abstract description 13
- 238000010168 coupling process Methods 0.000 title claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000010977 unit operation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to the automobile batteries Current Voltage detection device based on isolation coupling device.Control and data processing unit are transferred to after voltage detection unit collection batteries of electric automobile voltage signal of the present invention；Current detecting unit gathers batteries of electric automobile current signal and battery current signal is transferred into control and handled with data processing unit.High and low voltage isolation unit realizes the isolation of signal and power supply by the digital coupler of high-isolation DC DC converters and high-isolation.Control is run with data processing unit processing current and voltage signals and all units of control, is transferred data in high-speed CAN bus.Current Voltage detection unit independent, shortens detecting distance in the present invention, reduces influence of the external interference to signal detection, improves accuracy of detection and BMS reliabilities.Move in the high voltage power distribution unit of high-low pressure connection, integrated with the hardware resource of high tension distribution system, reduce cost.
Description
Technical field
The invention belongs to battery management system (BMS) technical field, a kind of automobile based on isolation coupling device relate to
Battery current voltage detection device.
Background technology
In recent years, as electric automobile is increasingly popularized, the length of battery life decides the following long-range hair of electric automobile
Exhibition, battery current voltage detecting efficiently and accurately can effectively optimize battery use, so as to effectively extend the life-span of battery,
Pass through the optimization to battery, the safety coefficient of raising vehicle that also can be larger, the Current Voltage of such batteries of electric automobile simultaneously
Detection seems it is particularly important.
All Current Voltage detections are integrated within BMS by the BMS of more electric automobile in the market, such as beautiful
The EV1 battery management systems of General Motors Corporation of state research and development, the BATTMAN battery management systems of Germany, company of Hyunju
DEV5-5 etc..BMS is the nucleus module of electric automobile, and the requirement to isolation is higher, some in BMS mesohigh detection units
Anomaly such as overcharges, the electric discharge of big voltage, it is most likely that BMS damage is caused, additionally due to high-pressure detection unit circuit connects
Enter among BMS, signal detection path is long, easily by electromagnetic interference in the complicated electromagnetic environment of body of a motor car.Cause
This proposes a kind of automobile batteries Current Voltage detection device based on isolation coupling device, and high pressure is examined by high-speed CAN bus
Survey unit to be completely exfoliated from original BMS, it is reduced interference closer to the signal node detected.Current detecting uses
High isolation, non-contact current sensor, detection is obtained the data processing list that data send by high-speed CAN bus BMS to
In member.The maximum advantage of the equipment is the anti-interference for both improving signal, enhances BMS reliability again, while this sets
Standby to move in the high tension distribution system of automobile high-low pressure connection, integrating its hardware resource reduces cost.The technology exists
New energy car battery context of detection has wide market application foreground.
The content of the invention
Present invention aims at provide a kind of automobile batteries Current Voltage detection device based on isolation coupling device.
The present invention includes voltage detection unit, current detecting unit, high and low voltage isolation unit, control and data processing list
Member.Described voltage detection unit is arranged on the higher-pressure region of circuit board, respectively with batteries of electric automobile and high and low voltage isolation unit
Connection, gather batteries of electric automobile voltage signal and by battery voltage signal after digital isolating chip in high and low voltage isolation unit
It is transferred to control and data processing unit；Current detecting unit is arranged on the electrified wire connected with tested load, with control
It is connected with data processing unit, gathers batteries of electric automobile current signal and battery current signal is transferred at control and data
Manage cell processing.High and low voltage isolation unit is arranged between the higher-pressure region of circuit board and low-pressure area, respectively with voltage detection unit
It is connected with control with data processing unit, is realized and believed by the digital coupler of high-isolation DC-DC converter and high-isolation
Number and power supply isolation.Control is arranged on the low-pressure area of circuit board with data processing unit, including microcontroller and high-speed CAN are received
Device is sent out, microcontroller uses automotive grade microcontroller chip.Control is connected with remaining all unit respectively with data processing unit,
Handle current and voltage signals and all unit operations of control.The data that microcontroller is handled well are passed by high-speed CAN transceiver
In the defeated high-speed CAN bus on automobile.
Described voltage detection unit includes multiple Low Drift Temperature precision divider resistances and multi-channel high-speed modulus conversion chip.
Each Low Drift Temperature precision divider resistance corresponds to the passage all the way of multi-channel high-speed modulus conversion chip, multi-channel high-speed analog-to-digital conversion
Chip is connected with the digital coupler of high-isolation in high and low voltage isolation unit by serial peripheral equipment interface bus, will be gathered
To voltage signal be transferred to high and low voltage isolation unit.
Described current detecting unit includes tool high precision test ability and exchange isolating power is not less than 2.5kVAC suddenly
That current sensor.
Described control and the external solid-state relay of data processing unit, by controlling solid-state relay to realize voltage detecting
The start and stop of the conversion of cell operation state, i.e. control voltage detection unit.
Described Low Drift Temperature precision divider resistance, multi-channel high-speed modulus conversion chip and Hall current sensor is distributed in
Higher-pressure region, MCU, high-speed CAN transceiver and voltage stabilizing chip are distributed in low-pressure area.
Preferably, described automotive grade microcontroller chip using ST companies production STM8AF series monolithics or
The single-chip microcomputer of the MC9S08 series of Freescale companies production.
The present invention by Current Voltage detection unit independent in BMS systems, is shortened and tested electricity by high-speed CAN bus
The detecting distance in pond, influence of the external interference to signal detection is reduced, improves accuracy of detection.Whole high pressure measure loop takes off
From BMS, the anomalous effects BMS of high tension loop normal work is avoided, improves BMS reliabilities.The detection device can be with
Have a style of one's own, be independent, moving in the high voltage power distribution unit of high-low pressure connection, can be with high tension distribution system
The hardware resource of control circuit is integrated, and reduces cost.
Brief description of the drawings：
Fig. 1 is overall structure block diagram of the present invention.
Embodiment：
As shown in figure 1, a kind of automobile batteries Current Voltage detection device based on isolation coupling device, including voltage detecting
Unit 1, current detecting unit 2, high and low voltage isolation unit 3, control and data processing unit 4.Voltage detection unit 1 is arranged on electricity
The higher-pressure region of road plate, for gathering batteries of electric automobile voltage signal, and by battery voltage signal through in high and low voltage isolation unit 3
Control and data processing unit 4 are transferred to after digital isolating chip；Current detecting unit 2 is arranged on logical with tested load connection
On electric lead, control and data processing list are transferred to for gathering batteries of electric automobile current signal, and by battery current signal
Member 4 is handled.High and low voltage isolation unit 3 is arranged between the higher-pressure region of circuit board and low-pressure area, is converted by high-isolation DC-DC
The digital coupler 8 of device 7 and high-isolation realizes the isolation of signal and power supply.Control is arranged on circuit with data processing unit 4
The low-pressure area of plate, for handling current and voltage signals and all unit operations of control.
Voltage detection unit 1 includes multiple Low Drift Temperature precision divider resistances 5 and multi-channel high-speed modulus conversion chip 6.Often
Individual Low Drift Temperature precision divider resistance corresponds to the passage all the way of multi-channel high-speed modulus conversion chip 6, and automobile battery voltage is through too low
The decompression of temperature drift precision divider resistance 5 reaches multi-channel high-speed modulus conversion chip acquisition range, multi-channel high-speed analog-to-digital conversion core
The voltage signal that piece collects passes through Serial Peripheral Interface (SPI) bus transfer to high and low voltage isolation unit 3.Multichannel is high
Fast modulus conversion chip, in order to coordinate BMS work-based logic, can be measured and opened including battery at least provided with three road acquisition channels
The voltage of three road key nodes including the voltage of road.
Current detecting unit 2 includes tool high precision test ability and exchanges Hall electricity of the isolating power not less than 2.5kVAC
Flow sensor.Hall sensing chip in Hall current sensor is used to detect magnetic field, and poly- magnetic core makes caused by electrified wire
Assemble in magnetic field.Hall sensing chip realizes the measurement to electric current by measuring the size in magnetic field caused by electrified wire.Should
Hall sensing chip internal integrated signal modulate circuit, without carrying out signal amplification, is directly inputted to built in microcontroller
Analog-digital converter carries out data conversion.The current detecting unit is to belong to contactless, high-isolation current detecting, is possessed high-precision
Spend detectability.
High and low voltage isolation unit 3 includes the digital coupler 8 of high-isolation DC-DC converter 7 and high-isolation.Equipment
In, the power supply of each device is converted to by voltage stabilizing chip 9 and high-isolation DC-DC converter 7, in low-pressure area 12V
Power supply obtain 5V voltages by the voltage stabilizing of voltage stabilizing chip 9, supply electricity to microcontroller 11, the high-speed CAN transceiver of low-pressure area
12 and the digital coupler 8 of high-isolation.It is by the DC-DC converter 7 of high-isolation that voltage stabilizing chip 9 is defeated in higher-pressure region
Go out 5V power voltage supplies that the filtered circuit 10 of 5V voltages obtains to higher-pressure region multi-channel high-speed modulus conversion chip 6 and high-isolation
Digital coupler 8.The voltage signal that voltage detection unit 1 collects is transferred to micro-control by the digital coupler 8 of high-isolation
Device 11 processed, i.e. automotive grade microcontroller (MCU) carry out data processing, are finally sent in high-speed CAN bus.The 5V of higher-pressure region is
Relative to high pressure, the 5V of low-pressure area is relative to low pressure, to have isolated electrical connection.
Control includes microcontroller 11 (MCU) and high-speed CAN transceiver 12 with data processing unit 4.Microcontroller 11
(MCU) use the microcontroller chip of automotive grade, mainly receive voltage detection unit and current detecting unit transmits
Data and the operation for controlling whole system.High-speed CAN transceiver 12 is by the data transfer that microcontroller is handled well to automobile
On high-speed CAN bus on.Automotive grade microcontroller chip using ST companies production STM8AF series monolithics or
The single-chip microcomputer of the MC9S08 series of Freescale companies production.
Control and the external solid-state relay 13 of data processing unit 4, by controlling solid-state relay 13 to realize voltage detecting
The start and stop of the conversion, i.e. control voltage detection unit 1 of the working condition of unit 1.
Layout structure of the present invention is：Low Drift Temperature precision divider resistance 5, multi-channel high-speed modulus conversion chip 6 and Hall electricity
Flow sensor is distributed in higher-pressure region, and microcontroller 11, high-speed CAN receive and dispatch 12 devices and voltage stabilizing chip 9 is distributed in low-pressure area.
The course of work：After system electrification, the both ends high voltage of automobile batteries is accurate through Low Drift Temperature in overvoltage detection unit
Divider resistance partial pressure, is given to voltage detection unit high speed modulus conversion chip, and the signal collected passes through high and low voltage isolation list
The digital coupler of high-isolation is transferred to data the MCU of low-pressure area in member, the electric current letter that Hall current sensor collects
Number being transferred to the analog-digital converter that MCU is carried is handled.MCU is to the data transmitted by processing and optimization, rear transmission
BMS data processing unit is transferred to by the high-speed CAN bus on automobile to high-speed CAN transceiver, is completed to automobile batteries
Current Voltage detects.
Claims (6)
1. a kind of automobile batteries Current Voltage detection device based on isolation coupling device, including the inspection of voltage detection unit, electric current
Survey unit, high and low voltage isolation unit, control and data processing unit；It is characterized in that：Described voltage detection unit is arranged on
The higher-pressure region of circuit board, it is connected respectively with batteries of electric automobile and high and low voltage isolation unit, collection batteries of electric automobile voltage letter
Number and battery voltage signal is transferred to after digital isolating chip in high and low voltage isolation unit to control and data processing unit；Electricity
Stream detection unit is arranged on on the electrified wire of tested load connection, being connected with controlling with data processing unit, collection is electronic
Battery current signal is simultaneously transferred to control and data processing unit processing by automobile batteries current signal；High and low voltage isolation unit is set
Put between the higher-pressure region of circuit board and low-pressure area, be connected respectively with voltage detection unit and control with data processing unit, led to
The digital coupler for crossing high-isolation DC-DC converter and high-isolation realizes the isolation of signal and power supply；At control and data
Reason unit is arranged on the low-pressure area of circuit board, including microcontroller and high-speed CAN transceiver, microcontroller use automotive grade micro-control
Device chip processed；Control is connected with remaining all unit respectively with data processing unit, handles current and voltage signals and control institute
There is unit operation；The data that microcontroller is handled well are transferred in the high-speed CAN bus on automobile by high-speed CAN transceiver.
2. a kind of automobile batteries Current Voltage detection device based on isolation coupling device as claimed in claim 1, its feature
It is：Described voltage detection unit includes multiple Low Drift Temperature precision divider resistances and multi-channel high-speed modulus conversion chip；It is more
The digital coupler of passage high speed analog-to-digital conversion chip and high-isolation in high and low voltage isolation unit is connect by serial peripheral equipment
Mouth bus connection, high and low voltage isolation unit is transferred to by the voltage signal collected.
3. a kind of automobile batteries Current Voltage detection device based on isolation coupling device as claimed in claim 1, its feature
It is：Described current detecting unit includes tool high precision test ability and exchanges the Hall that isolating power is not less than 2.5kVAC
Current sensor.
4. a kind of automobile batteries Current Voltage detection device based on isolation coupling device as claimed in claim 1, its feature
It is：Described control and the external solid-state relay of data processing unit, by controlling solid-state relay to realize voltage detecting list
The start and stop of the conversion of first working condition, i.e. control voltage detection unit.
5. a kind of automobile batteries Current Voltage detection device based on isolation coupling device as described in Claims 1 to 4, it is special
Sign is：Described Low Drift Temperature precision divider resistance, multi-channel high-speed modulus conversion chip and Hall current sensor is distributed in
Higher-pressure region, MCU, high-speed CAN transceiver and voltage stabilizing chip are distributed in low-pressure area.
6. a kind of automobile batteries Current Voltage detection device based on isolation coupling device as claimed in claim 1, its feature
It is：STM8AF series monolithic or Freescale company of the described automotive grade microcontroller chip using the production of ST companies
The single-chip microcomputer of the MC9S08 series of production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319856.5A CN107797076A (en) | 2017-12-12 | 2017-12-12 | A kind of automobile batteries Current Voltage detection device based on isolation coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319856.5A CN107797076A (en) | 2017-12-12 | 2017-12-12 | A kind of automobile batteries Current Voltage detection device based on isolation coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107797076A true CN107797076A (en) | 2018-03-13 |
Family
ID=61537806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711319856.5A Pending CN107797076A (en) | 2017-12-12 | 2017-12-12 | A kind of automobile batteries Current Voltage detection device based on isolation coupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107797076A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407012A (en) * | 2018-12-05 | 2019-03-01 | 上海翌芯电子科技有限公司 | A kind of battery management system and battery management method |
| CN110618310A (en) * | 2019-10-15 | 2019-12-27 | 天津津航计算技术研究所 | Small-size voltage and current isolation monitoring module |
| CN110907838A (en) * | 2018-09-14 | 2020-03-24 | 广州汽车集团股份有限公司 | Battery working condition simulation test method, electronic equipment and computer readable storage medium |
| CN111660813A (en) * | 2019-12-10 | 2020-09-15 | 摩登汽车有限公司 | Battery high voltage detection device, battery, power system and car |
| WO2022016812A1 (en) * | 2020-07-24 | 2022-01-27 | 一巨自动化装备（上海）有限公司 | High-low voltage signal sampling and transmission system based on high-voltage mcu |
| CN114655142A (en) * | 2022-04-20 | 2022-06-24 | 天津经纬恒润科技有限公司 | double-MCU control system and automobile |
| CN117434367A (en) * | 2023-10-24 | 2024-01-23 | 上海储融检测技术股份有限公司 | High-low voltage coupling test equipment for battery pack |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442211A (en) * | 2008-07-08 | 2009-05-27 | 奇瑞汽车股份有限公司 | Monitoring device and monitoring methods for distributed battery management system |
| CN101509960A (en) * | 2008-11-20 | 2009-08-19 | 奇瑞汽车股份有限公司 | Battery voltage and temperature monitoring device |
| CN201766377U (en) * | 2010-06-30 | 2011-03-16 | 埃泰克汽车电子(芜湖)有限公司 | Nickel-metal hydride battery monitoring system of electromobile |
| CN102175975A (en) * | 2011-01-22 | 2011-09-07 | 启明信息技术股份有限公司 | Power battery voltage monitoring control method and device for electric automobile |
| CN202330663U (en) * | 2011-09-03 | 2012-07-11 | 镇江恒驰科技有限公司 | Voltage collecting circuit for single battery of battery pack |
| CN103171451A (en) * | 2013-04-03 | 2013-06-26 | 山东大学 | Battery management system based on co-processor and solid-state relay |
| CN203759216U (en) * | 2014-01-27 | 2014-08-06 | 北京智行鸿远汽车技术有限公司 | Single cell voltage acquisition circuit in blade electric vehicle battery management system |
| CN204196724U (en) * | 2014-10-30 | 2015-03-11 | 惠州市亿能电子有限公司 | A kind of principal and subordinate's monolithic cell management system |
-
2017
- 2017-12-12 CN CN201711319856.5A patent/CN107797076A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442211A (en) * | 2008-07-08 | 2009-05-27 | 奇瑞汽车股份有限公司 | Monitoring device and monitoring methods for distributed battery management system |
| CN101509960A (en) * | 2008-11-20 | 2009-08-19 | 奇瑞汽车股份有限公司 | Battery voltage and temperature monitoring device |
| CN201766377U (en) * | 2010-06-30 | 2011-03-16 | 埃泰克汽车电子(芜湖)有限公司 | Nickel-metal hydride battery monitoring system of electromobile |
| CN102175975A (en) * | 2011-01-22 | 2011-09-07 | 启明信息技术股份有限公司 | Power battery voltage monitoring control method and device for electric automobile |
| CN202330663U (en) * | 2011-09-03 | 2012-07-11 | 镇江恒驰科技有限公司 | Voltage collecting circuit for single battery of battery pack |
| CN103171451A (en) * | 2013-04-03 | 2013-06-26 | 山东大学 | Battery management system based on co-processor and solid-state relay |
| CN203759216U (en) * | 2014-01-27 | 2014-08-06 | 北京智行鸿远汽车技术有限公司 | Single cell voltage acquisition circuit in blade electric vehicle battery management system |
| CN204196724U (en) * | 2014-10-30 | 2015-03-11 | 惠州市亿能电子有限公司 | A kind of principal and subordinate's monolithic cell management system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907838A (en) * | 2018-09-14 | 2020-03-24 | 广州汽车集团股份有限公司 | Battery working condition simulation test method, electronic equipment and computer readable storage medium |
| CN109407012A (en) * | 2018-12-05 | 2019-03-01 | 上海翌芯电子科技有限公司 | A kind of battery management system and battery management method |
| CN110618310A (en) * | 2019-10-15 | 2019-12-27 | 天津津航计算技术研究所 | Small-size voltage and current isolation monitoring module |
| CN111660813A (en) * | 2019-12-10 | 2020-09-15 | 摩登汽车有限公司 | Battery high voltage detection device, battery, power system and car |
| WO2022016812A1 (en) * | 2020-07-24 | 2022-01-27 | 一巨自动化装备（上海）有限公司 | High-low voltage signal sampling and transmission system based on high-voltage mcu |
| US11959948B2 (en) | 2020-07-24 | 2024-04-16 | Jee Automation Equipment (shanghai) Co., Ltd. | High voltage signal and low voltage signal sampling and transmission system based on high voltage MCU |
| CN114655142A (en) * | 2022-04-20 | 2022-06-24 | 天津经纬恒润科技有限公司 | double-MCU control system and automobile |
| CN114655142B (en) * | 2022-04-20 | 2023-12-22 | 天津经纬恒润科技有限公司 | double-MCU control system and automobile |
| CN117434367A (en) * | 2023-10-24 | 2024-01-23 | 上海储融检测技术股份有限公司 | High-low voltage coupling test equipment for battery pack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107797076A (en) | A kind of automobile batteries Current Voltage detection device based on isolation coupling device | |
| CN101692583B (en) | Battery management system for pure electric bus | |
| US8751176B2 (en) | Apparatus for monitoring battery voltage and temperature | |
| CN102445664B (en) | Comprehensive testing device for battery pack | |
| CN102288917B (en) | Storage battery detector and vehicle-mounted network system for intelligent automobile | |
| CN205941678U (en) | Power battery current detection device based on shunt | |
| CN102298092A (en) | Method and device for detecting power battery insulation resistance of electric automobile | |
| CN103323646B (en) | A kind of current sensor used for electric vehicle and detection method thereof | |
| CN106405249A (en) | Detection circuit and detection method for detecting insulation resistance of electric vehicle | |
| CN103901345B (en) | A kind of accumulator electric quantity detection apparatus and method | |
| CN102231549A (en) | Battery management chip | |
| CN109720204A (en) | A kind of fault detection system and method for DC/DC converter | |
| CN106168636A (en) | Battery voltage acquisition circuit for battery management system | |
| CN107800172A (en) | A kind of data collecting system of batteries of electric automobile module | |
| CN111856332A (en) | Circuit and method for detecting disconnection of shunt | |
| CN109633240A (en) | Power battery pack voltage detection method and device | |
| CN102854372A (en) | High-voltage bus current detection device and battery management system | |
| CN204479725U (en) | The jamproof batteries of electric automobile signal pickup assembly of a kind of small volume low watt consumption | |
| CN108657088A (en) | For the high voltage distribution box of electric vehicle, electric control system and electric vehicle | |
| CN102710248A (en) | Isolated voltage acquisition circuit | |
| CN206038760U (en) | A battery voltage acquisition circuit for battery management system | |
| CN201011504Y (en) | Current sensor | |
| CN209842023U (en) | Automobile battery current and voltage detection equipment based on isolation coupling device | |
| CN102243290B (en) | Wireless polling system for new-energy vehicle and ship battery pack | |
| CN103368229A (en) | Ground electric vehicle battery diagnosis device and diagnostic method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |