Battery management system and method for numbering battery detection units

Abstract

A battery management system and method for numbering a battery monitor unit. The system comprises: a signal generating unit, a BCU and at least two BMUs; the signal generating unit is connected with any one of the at least two BMUs; the at least two BMUs are connected in series, a BMU from among the at least two BMUs is used to receive a trigger signal from the signal generating unit or a first BMU connected thereto, acquire a digital measurement signal value according to the trigger signal, and send the digital measurement signal value to the BCU; the BCU is connected to each of the BMUs, and is used to number each of the BMUs according to the received digital signal measurement value, and to issue a corresponding number to each of the BMUs. Each BMU outputs a digital measurement signal value to the BCU, and the BCU can automatically number the BMUs according to the received digital signal measurement values having different sizes; therefore, all BMUs are the same in the production process, and no special process is needed to distinguish between different BMUs, such that the production management cost is low.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a battery management system and a method for numbering battery detection units. Background technique [0002] As the market's requirements for the cruising range of electric vehicles continue to increase, the energy stored in the battery pack of the electric vehicle is gradually increasing, which leads to an increasing number of rechargeable battery cells in the battery pack. Based on safety considerations when recycling battery packs, a BMS (Battery Management System, battery management system) is usually configured. Wherein, the BMS includes a BCU (Battery Control Unit, battery control unit) as a control center and at least one BMU (Battery Monitor Unit, battery detection unit). The BMU is used to monitor the voltage, temperature and other information of the battery unit, and report the above information to the BCU through the communication bus, and then the BCU accurately mon...

AI Technical Summary

Problems solved by technology

[0005] For the above numbering method, since the configuration of the resistance network of each BMU is different, it is necessary to manage the BOM (Bill of Material, Bill of Materials) and corresponding processing technology of N sets of BMUs to produce a battery pack containing N BMUs, so the The production management cost of multiple numbering methods is too high

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