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Electric vehicle battery management system

A battery management system and technology for electric vehicles, which are applied in electric vehicles, electric traction, vehicle energy storage, etc., can solve the problems of difficult modification of ID addresses and complicated allocation, and achieve the effects of low production cost, simple structure and good expansion performance.

Active Publication Date: 2014-03-26
HUATING HEFEI POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a battery management system for electric vehicles, which solves the problem that the ID address assignment of the slave control module in the existing management system is complicated, and the ID address is difficult to modify when replacing the slave control module

Method used

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  • Electric vehicle battery management system

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Embodiment Construction

[0013] See figure 1 , an electric vehicle battery management system, including a main control module 1, a first slave control module 2a, a second slave control module 2b, a third slave control module 2c and a , the CAN bus 3 of the second slave control module 2b, the third slave control module 2c, the level output terminal 6 of the master control module 1 is sequentially connected with the first sensor 4a of the first slave control module 2a, the first slave control module 2a The first control switch 5a, the second sensor 4b of the second slave control module 2b, the second control switch 5b of the second slave control module 2b, the third sensor 4c of the third slave control module 2c, the third sensor of the third slave control module 2c The third control switch 5c and the sensor 7 of the main control module are connected in series through the address bus 8 .

[0014] Principle of use of the present invention:

[0015] 1. Each slave control module is assigned a unique seri...

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Abstract

The invention discloses an electric vehicle battery management system which comprises a master control module and multiple slave control modules connected with the master control module, wherein a sensor of each slave control module is connected in series with a control switch of the slave control module; the control switch of the front one of adjacent two slave control modules is connected with an inductor of the rear one; and a level output end of the master control module is sequentially connected in series with the sensor and control switch of each slave control module and the sensor of the master control module through an address bus. The electric vehicle battery management system disclosed by the invention has a simple structure and low manufacturing cost, can automatically update the ID (identity) addresses of the slave control modules, has perfect expansion perforamnce, and only needs to automatically allocate the circuit and wire harness without modification when the slave control module is replaced.

Description

technical field [0001] The invention relates to the field of electric vehicle batteries, in particular to an electric vehicle battery management system. Background technique [0002] At present, in the electric vehicle battery management system, due to the large number of battery cells that need to be monitored, a distributed structure is usually adopted, that is, a master-multiple-slave structure. Multiple slave control modules (BMU) are used to detect the voltage of the battery cells. The form of the bus summarizes the measurement results to the main control module (BMS). ID addresses need to be used to distinguish each slave control module on the communication bus, so ID addresses need to be assigned to the slave control modules. The existing ID allocation methods mainly include the following types: [0003] 1. Fix the address in the software of the slave control module: This method fixes the ID address in the software of the slave control module. When the slave contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/18
CPCY02T10/7005Y02T10/70
Inventor 劳力王扬周鹏
Owner HUATING HEFEI POWER TECH