Battery management system and method for numbering battery detection unit

Abstract

The invention discloses a battery management system and a method for numbering a battery detection unit. The system herein includes a signal generation unit, a BCU and at least two BMUs. The signal generation unit is connected to any one of the at least two BMUs. The at least two BMUs are successively connected. One BMU of the at least two BMUs is intended for receiving a triggering signal which is transmitted by the signal generation unit or is transmitted by a first BMU which is connected to the any one BMU, and based on the triggering signal, acquiring a digital measurement signal value, and transmitting the digital measurement signal value to the BCU. The BCU is connected to each BMU, and is intended for based on the received digital signal measured value, numbering each BMU, and issuing a corresponding number to each BMU. According to the invention, each BMU outputs a digital measurement signal value to the BCU, the BCU automatically numbers the BMUs in accordance with the magnitude of the digital measurement signal values, so that in the production process, all BMUs are the same, the system requires no special technology to differentiate different BMUs and has low management cost.

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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