Fault detection and protection device of lithium ion power supply system

Abstract

The invention relates to a fault detection and protection device of a lithium ion power supply system. The fault detection and protection device comprises an integrated fault management module, a battery fault acquisition/protection module, a battery connection control and air pressure detection module, an upper computer module, a charger fault diagnosis module and a fault display module, wherein the integrated fault management module is connected with each module; the charger fault diagnosis module and the integrated fault management module are provided with CAN (Controller Area Network) interface chips respectively; the charger fault diagnosis module is connected with the integrated fault management module in a CAN communication manner; the integrated fault management module is connected with the upper computer module by RS232 (Recommended Standard 232); the battery connection control and air pressure detection module is connected with the battery fault acquisition/protection module; and the battery fault acquisition/protection module is connected with the charger fault diagnosis module. The fault detection and protection device is a multi-stage fault diagnosis and protection device, protects a battery, ensures normal and coordinative running between modules of a power supply system of the battery, and improves the running safety and reliability of the lithium ion power supply system.

Description

technical field [0001] The invention relates to a battery power supply protection device, in particular to a fault detection and protection device for a lithium ion power supply system. Background technique [0002] In view of the voltage and power requirements, in some lithium battery applications, it is necessary to connect multiple lithium batteries in series to form a lithium battery pack to obtain higher power. After they are connected in series to form a high-voltage battery pack, these battery packs will be unbalanced or malfunctioned due to factors such as charging and discharging, battery temperature, etc. If the battery pack is not repaired and maintained in time after this happens, it will affect The working efficiency and service life of these battery packs reduce the power of the entire system, which greatly affects the performance of the battery system, thereby affecting the overall performance and safety. [0003] During the long-term operation of the battery...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that a plurality of lithium batteries make up a power supply that is easy to cause safety during use, and proposes a fault detection and protection device for a lithium ion power supply system, which is a multi-level fault diagnosis and protection device to ensure that the battery power supply system The normal and coordinated operation of each module improves the safety and reliability of the lithium-ion power system operation

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