CN205376672U - Electric vehicle battery management system framework of communicating based on CAN bus - Google Patents
Electric vehicle battery management system framework of communicating based on CAN bus Download PDFInfo
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- CN205376672U CN205376672U CN201521122727.3U CN201521122727U CN205376672U CN 205376672 U CN205376672 U CN 205376672U CN 201521122727 U CN201521122727 U CN 201521122727U CN 205376672 U CN205376672 U CN 205376672U
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- 238000004891 communication Methods 0.000 claims abstract description 28
- 239000000178 monomer Substances 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
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- 238000012986 modification Methods 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
Abstract
The utility model discloses an electric vehicle battery management system framework of communicating based on CAN bus, including a plurality of power battery monomers, battery voltage collection module, CAN bus subnet, the battery management controller, CAN bus major network, vehicle control unit, CANUSB adapter and PC, battery voltage collection module gathers the free voltage information of battery, and send the battery management controller to through CAN bus subnet, the battery management controller is still gathered or is received other like the temperature, the total voltage, the total current, state information such as insulation resistance, and will send for vehicle control unit through CAN bus major network, the PC reads battery state information through the CANUSB converter is direct from CAN bus major network and subnet. The utility model provides an electric vehicle battery management system framework of communicating based on CAN bus adopts CAN communication mode, reduces the wiring, has improved battery management system's communication reliability reduce cost, and adoption principal and subordinate communication mode has reduced the load factor of major network, has improved communication efficiency and reliability.
Description
Technical field
This utility model relates to the cell management system of electric automobile communications field, particularly to a kind of cell management system of electric automobile communication construction based on CAN.
Background technology
Due to the demand for security that electric automobile power battery group is special, it usually needs be equipped with battery management system to ensure that battery uses safety and improves the service life of battery.Battery management system needs timely and reliably to transmit substantial amounts of data to ensure the effective management to set of cells.CAN is a kind of bus form widely used in modern automobile industry, is that company of German Bosch aims at automotive check and Control System Design.CAN is compared with other industrial bus and is had many good qualities, and it is supported distributed AC servo system and controls in real time, and the use scope of CAN is throughout the multi-line network of express network and low cost, and Information Communication speed is up to 1Mbps.If data are made mistakes during sending, the frame destroyed can resend automatically.Owing to employing much new technology and unique design, the communication of CAN has prominent reliability, real-time and motility compared with other a lot of network-bus.The existing communication modes using CAN in electric automobile generally requires the CAN that design is independent, adds the hardware and software development cycle, improves cost.
Infineon XC2267 is 16 MCU with 32 bit processor performances of Infineon XC2000 series, carries CAN controller, has 6 CAN nodes, up to 256 mailboxes.Its operational capability can meet the requirement of real-time that automobile CAN-bus data transmit well.Company of Infineon is proposed the application code maker of a DAVE by name for its 8,16 and 32 8-digit microcontrollers, it can provide initial configuration and driver code, and user can pass through to configure the interface equipment of complexity and shorten the control device software development time.
In the electric automobile utilizing CAN to communicate, still there is no a kind of instrument that can observe electric automobile power battery Battery pack state intuitively at present, it is to be understood that the state of battery needs read the message that sends of CAN and be analyzed message just learning battery status, this brings trouble to the detection of battery status and the analysis of battery failures.
Labview be National Instruments exploitation a program development platform, adopt patterned language, seem compared with the language of other type of codes convenient intuitively.Labview can give full play to the ability of computer, there is powerful data-handling capacity, developer can easily carry out multi-thread programming, reduce software development difficulty, the front panel of Labview provides abundant traditional instrument control, and user can utilize these spaces to create the user interface of oneself easily.
Utility model content
This utility model purpose is: provides a kind of cell management system of electric automobile communication construction based on CAN, and devises the state that the host computer monitoring of software based on Labview makes it possible to utilize PC to observe power battery pack intuitively.
The technical solution of the utility model is:
Cell management system of electric automobile communication construction based on CAN, including some electrokinetic cell monomers, battery voltage acquisition module, CAN subnet, battery management controller, CAN major network, entire car controller, CAN/USB adapter and PC, wherein
Described some electrokinetic cell monomers provide electric energy for electric automobile；
Battery voltage acquisition module gathers the information of voltage of battery cell, and sends battery management controller to by CAN subnet,
Described battery management controller also gathers or receives the temperature information of battery, battery total current value information, battery total voltage value information, battery SOC status information, cell minimax magnitude of voltage information and battery insulation resistance value information, and by CAN major network, above-mentioned each status information being sent to entire car controller, battery management system receives, by CAN major network, the order that entire car controller sends simultaneously；
Described PC directly reads monomer battery voltage value information, the temperature information of battery, battery total current value information, battery total voltage value information, battery SOC status information, cell minimax magnitude of voltage information and battery insulation resistance value information from CAN major network and subnet by CAN/USB transducer.
Preferably, voltage acquisition module Infineon's XC886 chip microcontroller.
Preferably, battery management controller Infineon's XC2267 chip microcontroller.
Preferably, battery management system adopts master-slave communication mode.
Preferably, the CAN controller that the CAN major network of CAN subnet between battery management controller and voltage acquisition module, battery management controller and entire car controller is carried by battery management controller realizes.
Preferably, CAN subnet is automatically generated by software with the bottom layer driving code of CAN major network.
Preferably, PC reads the software used by battery status information based on Labview software design.
The utility model has the advantages that:
1. the cell management system of electric automobile communication construction based on CAN provided by the utility model, adopt CAN communication mode, reduce wiring, the communication reliability that improve battery management system reduces cost, adopt master-slave communication mode to decrease the load factor of major network, improve communication efficiency and reliability；
2. this utility model adopt CAN controller that Infineon XC2267 and XC886 chip carry from without designed, designed CAN thus decreasing the construction cycle of hardware, the bottom layer driving code automatically generating CAN controller with DAVE software decreases software development cycle.
3. this utility model is devised the battery status based on Labview and monitors upper computer software and make it possible to be observed intuitively by PC the status information of battery, it is easy to judge the fault of battery.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further described:
Fig. 1 is the cell management system of electric automobile communication construction schematic diagram described in this utility model embodiment；
Fig. 2 is the schematic diagram of 36 road monomer battery voltage acquisition modules described in this utility model embodiment.
Detailed description of the invention
Number in being embodied as according to battery cell used of the present utility model determines the number of voltage acquisition chip LTC6802 chip, LTC6802 is a complete battery monitoring IC, its built-in 12 ADC, an accurate voltage reference, a high voltage input multiplexer and a serial line interface.Each LTC6802 chip can measure the voltage of 12 Stringing cells when total input voltage is up to 60V, and the voltage measurement in all 12 input channels can complete within the time of 13ms.Each LTC6802 has a separately addressable serial line interface, hence allows to multiple LTC6802 devices are connected to a control processor and operate simultaneously.As shown in Figure 2, it is 36 road monomer battery voltage acquisition modules, 3 LTC6802 chips are connected to an XC886 chip here, and each XC886 chip receives the voltage of 36 cells, and the voltage of cell is sent to XC886 in SPI communication mode by LTC6802.
As it is shown in figure 1, the XC886 of some 36 road monomer battery voltage acquisition modules receives monomer battery voltage and is then sent to XC2267 by the CAN controller carried by CAN subnet, CAN transceiver adopts Infineon's LTE6250G chip.XC2267 receives the XC886 monomer battery voltage sent, by its AD conversion module carried, the temperature analog signal of thermocouple collection is converted to digital signal, receive total voltage information and insulation resistance information that insulating monitoring module sends, receive the current analog signal of Hall element transmission and be converted to digital signal by AD conversion.Current sensor adopts the Hall current sensor of DHABS/18 model of Lyme electronics corporation, and it is digital signal that the size of electric current can be converted to analog voltage signal then AD conversion Channel-shifted through XC2267 by it.The thermocouple of the 104AP-2 model of stoneman electronics corporation is selected in temperature sensor, its operation principle is that temperature information is converted to resistance information, by analog circuit, resistance information being converted to analog voltage information, then the AD conversion Channel-shifted through XC2267 is digital signal.Total voltage and the insulation resistance of set of cells are sent to XC2267 by insulating monitoring module.XC2267 completes collection or the reception of all status signals about battery, then pass through CAN and be sent on the CAN major network at other controller places such as entire car controller or VCU, ABS, EPS, GateWay, entire car controller receives the XC2267 signal sent on CAN major network, and sends control information by CAN major network to XC2267.
The bottom layer driving software of the CAN communication between battery management system principal and subordinate's module and between battery management system and entire car controller is by the DAVE Software Create of Infineon.In whole communication system, it is sent to battery detecting host computer by the information of USB/CAN transducer acquisition sub-net and major network, host computer adopts PC, and this utility model devises the upper computer software based on Labview, by host computer direct vision battery state information.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement according to this, can not limit protection domain of the present utility model with this.All modifications done according to the spirit of this utility model main technical schemes, all should be encompassed within protection domain of the present utility model.
Claims (5)
1. based on the cell management system of electric automobile communication construction of CAN, it is characterized in that: include some electrokinetic cell monomers, battery voltage acquisition module, CAN subnet, battery management controller, CAN major network, entire car controller, CAN/USB adapter and PC, wherein
Described some electrokinetic cell monomers provide electric energy for electric automobile；
Battery voltage acquisition module gathers the information of voltage of battery cell, and sends battery management controller to by CAN subnet,
Described battery management controller also gathers or receives the temperature information of battery, battery total current value information, battery total voltage value information, battery SOC status information, cell minimax magnitude of voltage information and battery insulation resistance value information, and by CAN major network, above-mentioned each status information being sent to entire car controller, battery management system receives, by CAN major network, the order that entire car controller sends simultaneously；
Described PC directly reads monomer battery voltage value information, the temperature information of battery, battery total current value information, battery total voltage value information, battery SOC status information, cell minimax magnitude of voltage information and battery insulation resistance value information from CAN major network and subnet by CAN/USB transducer.
2. cell management system of electric automobile communication construction according to claim 1, it is characterised in that voltage acquisition module Infineon's XC886 chip microcontroller.
3. cell management system of electric automobile communication construction according to claim 1, it is characterised in that battery management controller Infineon's XC2267 chip microcontroller.
4. cell management system of electric automobile communication construction according to claim 1, it is characterised in that battery management system adopts master-slave communication mode.
5. cell management system of electric automobile communication construction according to claim 1, it is characterized in that, the CAN controller that the CAN major network of CAN subnet between battery management controller and voltage acquisition module, battery management controller and entire car controller is carried by battery management controller realizes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521122727.3U CN205376672U (en) | 2015-12-31 | 2015-12-31 | Electric vehicle battery management system framework of communicating based on CAN bus |
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| CN201521122727.3U CN205376672U (en) | 2015-12-31 | 2015-12-31 | Electric vehicle battery management system framework of communicating based on CAN bus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428736A (en) * | 2015-12-31 | 2016-03-23 | 清华大学苏州汽车研究院（吴江） | Electric vehicle cell management system communication configuration based on CAN bus |
| CN106201670A (en) * | 2016-07-20 | 2016-12-07 | 北京航天发射技术研究所 | A kind of CAN data processing method based on Labview |
| DE102017217863A1 (en) * | 2017-10-09 | 2019-04-11 | Robert Bosch Gmbh | Battery system and method for operating a battery system |
| CN113688592A (en) * | 2021-08-12 | 2021-11-23 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | SoC chip implementation system, method, medium and device based on driving middleware |
-
2015
- 2015-12-31 CN CN201521122727.3U patent/CN205376672U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428736A (en) * | 2015-12-31 | 2016-03-23 | 清华大学苏州汽车研究院（吴江） | Electric vehicle cell management system communication configuration based on CAN bus |
| CN106201670A (en) * | 2016-07-20 | 2016-12-07 | 北京航天发射技术研究所 | A kind of CAN data processing method based on Labview |
| CN106201670B (en) * | 2016-07-20 | 2019-08-02 | 北京航天发射技术研究所 | A kind of CAN bus data processing method based on Labview |
| DE102017217863A1 (en) * | 2017-10-09 | 2019-04-11 | Robert Bosch Gmbh | Battery system and method for operating a battery system |
| CN113688592A (en) * | 2021-08-12 | 2021-11-23 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | SoC chip implementation system, method, medium and device based on driving middleware |
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