High-robustness vehicle power battery management system and management method

Abstract

A high-robustness vehicle power battery management system comprises a master control module, a slave control module, a high-voltage module, a diagnosis safety module, a charge module and a discharge module, wherein the master control module is used for performing battery state estimation according to relevant acquisition data, performing battery equalization management analysis, battery thermal management analysis, charge-discharge management analysis, high-voltage safety management analysis and vehicle state analysis by taking the battery state estimation as a basis and giving out a corresponding control signal to a corresponding module according to an estimation result and an analysis result, the slave control module is used for performing battery equalization adjustment and battery thermal temperature adjustment on each battery pack according to the control signal, the high-voltage module is used for performing total voltage measurement, current acquisition and insulation intensitymonitoring on the master control module, the diagnosis safety module is used for performing self-check and abnormal diagnosis on the battery management system, the charge module is connected with a charging pile via a charging interface and is used for charging each battery pack according to the corresponding control signal, and the discharge module is used for achieving normal running of the whole control equipment. By the high-robustness vehicle power battery management system, the system function can be effectively improved.

Description

technical field [0001] The invention relates to the field of battery management, in particular to a highly robust vehicle power battery management system and a management method thereof. Background technique [0002] In the prior art, secondary batteries have the following disadvantages, such as less stored energy, short life, problems in series-parallel connection, 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. Common secondary batteries: lithium-ion secondary batteries, lithium polymer batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, while electric vehicles use secondary batteries, which provide energy for vehicles through batteries, and electric vehicles The biggest advantage is that it is environmentally friendly, replacing traditional diesel and gasoline vehicles, greatly reducing pollution emissions an...

AI Technical Summary

Problems solved by technology

[0004] However, the current battery management system has a single function and has the following key problems:

[0005] 1. The battery state estimation is single, only the charging and discharging state of the battery is controlled, and the health state or power state of the battery is not fully estimated, and the error correction ability of the battery state is poor

[0006] 2. The lack of high-voltage insulation monitoring is prone to high-voltage safety problems;

[0007] 3. Lack of battery safety protection, incomplete real-time monitoring of voltage, current and temperature of single batteries and the entire battery pack, lack of protection functions, etc.

[0008] The above problems make the battery management system have a single function, poor monitoring and protection of the battery, and seriously affect the safety index of the battery

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