Battery management system and battery management method

Abstract

The invention discloses a battery management system, relating to a battery and a management method thereof. The battery management system comprises a main controller and slave controllers, wherein the main controller is connected with a plurality of slave controllers by an internal CAN (Controller Area Network) bus; each slave controller controls one battery group; and the main controller is also connected with external equipment through an external CAN bus. The battery management system is characterized by further comprising a wire jumper circuit module and a nonvolatile storage unit, wherein the wire jumper module is in controlled connection with the slave controllers to decide working modes of the slave controllers; the nonvolatile storage unit is connected with the slave controllers; and the storage unit is used for storing allocated addresses of the slave controllers. The battery management system is rapid to start, low in cost, simple in circuit structure and high in working reliability.

Description

technical field [0001] The invention relates to a battery management system (BMS), in particular to a battery management system with configurable node addresses and a specific management method thereof. Background technique [0002] The battery management system (BATTERY MANAGEMENT SYSTEM, referred to as BMS) is the link between the battery and the user, and the main object is the secondary battery. Secondary batteries have the following disadvantages, such as less stored energy, short life, problems in series and parallel use, safety in use, and difficulty in estimating battery power. The performance of batteries is very complex, and the characteristics of different types of batteries vary greatly. The main functions of the battery management system (BMS) include: accurately estimating the state of charge (State of Charge, or SOC) of the power battery pack; collecting the terminal voltage of each battery in the electric vehicle battery pack in real time during the charging...

AI Technical Summary

Problems solved by technology

Secondary batteries have the following disadvantages, such as less stored energy, short life, problems in series and parallel use, safety in use, and difficulty in estimating battery power, etc.

This prior art introduces multiple jumpers as hardware distinguishing marks. Although it effectively solves the problem of system communication conflicts, it is not difficult to find that the number of jumper circuits in this invention will increase with the increase in the number of acquisition modules. , which increases the hardware complexity of the system, makes the hardware connection complicated, and the number of general-purpose input and output ports (GPIO) of the microprocessor (MCU) it occupies will also increase

Moreover, the whole work process needs to rely on the different status of all hardware jumpers. The setting of jumpers can only be done manually, and the error rate is high.

Jumper wires are more likely to change during work and may also cause errors in the entire system due to vibration, etc.

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