Controller of battery management system

Abstract

The invention relates to a controller of a battery management system. The controller comprises a power supply conversion circuit, a single-chip microcomputer, a relay driving module, a battery working state relay and a standby switch, wherein the power supply conversion circuit is used for respectively converting electric energy provided by a battery to voltages which is respectively suitable for working of the relay driving module and the single-chip microcomputer; the relay driving module can control the relay to be closed or opened according to a closing / opening signal; the single-chip microcomputer is connected with the relay driving module and used for sending the closing / opening signal to the relay driving module, the single-chip microcomputer is used for getting the voltage of the battery, automatically sending the opening signal when the voltage of the battery is lower than a standby threshold value, detecting the input of commercial power and automatically sending a closing signal when the input of the commercial power is detected; and the standby switch is connected with the single-chip microcomputer and used for manually controlling the single-chip microcomputer to send the closing / opening signal. The controller disclosed by the invention is applied in the battery management system with current exceeding 100A, the power consumption of the system under a standby state is less than 0.6W, the standby time of a product is greatly prolonged, and the service life and the performances of the battery are further ensured.

Description

technical field [0001] The invention relates to an electric energy storage system, in particular to a battery management system controller. Background technique [0002] The traditional relatively high-power battery management system, such as a battery management system with a working current of more than 100A, controls battery charging and discharging directly through the relay. Because the relay itself requires a corresponding working current, the standby power consumption of the product exceeds 10W. . Therefore, in the standby state, the energy of the battery will be consumed quickly, the working time and life of the battery will be shortened, and the working performance of the product will be affected. It is especially unfavorable for product transportation (or other long-term abnormal use status), and the battery power may be exhausted during transportation. Contents of the invention [0003] Based on this, it is necessary to provide a battery management system cont...

AI Technical Summary

Problems solved by technology

Therefore, in the standby state, the energy of the battery will be consumed quickly, the working time and life of the battery will be shortened, and the working performance of the product will be affected.

Especially unfavorable for product transportation (or other long-term abnormal use status), the battery power may be exhausted during transportation

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