CAN (Controller Area Network) communication-based battery management system
A battery management system, CAN communication technology, applied in battery circuit devices, secondary battery repair/maintenance, current collectors, etc., can solve problems such as excessively long wiring harness layout, communication interference, and inconvenience for battery modules to form independent parts, etc. , to achieve the effect of simplifying wiring harness layout and reducing power consumption
Inactive Publication Date: 2015-05-20
广东亿纬赛恩斯新能源系统有限公司
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[0004] With this structure, the main control unit and the slave control unit need to connect the CAN bus 20 and the power line 10 at the same time, which is not convenient for each battery module to form an independent part, not only requires too long wiring harness arrangement, but also easily causes communication interference
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[0028] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0029] Please refer to figure 2 , figure 2 It is a structural block diagram of a battery management system provided by an embodiment of the present invention, and the battery management system includes: a master control unit 30 , a slave control unit 40 and a battery module 50 .
[0030] Wherein, the slave control unit 40 includes: a voltage c...
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The invention discloses a CAN (Controller Area Network) communication-based battery management system. The system comprises a master control unit, a slave control unit and a battery module, wherein the slave control unit comprises a central processing unit, a voltage converter and a CAN communication module; the voltage converter is used for providing working power for the central processing unit; a CAN communication signal input end of the central processing unit is connected with the master control unit through the CAN communication module for controlling the central processing unit to start to work normally if an on-line state wake-up signal transmitted by the master control unit is received. The slave control unit is powered by transforming the battery module; the master control unit and the slave control unit are only required to be connected with a CAN bus, so the arrangement of a wiring harness is simplified; besides, the slave control unit can only start to work normally when the on-line state wake-up signal transmitted by the master control unit is received, so unnecessary electric energy consumption of the slave control unit is reduced.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a battery management system based on CAN communication. Background technique [0002] There are two main design methods of battery management system commonly used: distributed design and centralized design. At present, the battery management system design of electric vehicles mostly adopts distributed design. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of the structure of the distributed battery management system. The distributed battery management system divides the battery management system into a master control unit and several slave control units. Each slave control unit can independently complete battery information measurement, battery energy balance, communication and other functions. The CAN bus 20 is used for communication between the slave control units and between the slave control units and the master control unit. The main c...
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IPC IPC(8): H02J7/00H01M10/42
CPCY02E60/10
Inventor 邓锦炽程应祥陈美华刘智亮黄小双
Owner 广东亿纬赛恩斯新能源系统有限公司