Method for protecting battery stack during testing of vanadium battery

Abstract

The invention relates to the field of vanadium cells, in particular to a method for protecting voltaic pile in a vanadium cell test process. Due to the fact that a working relation between a vanadium cell management system and a charge-discharge tester is independent, now a software-hardware of the charge-discharge tester is fixed, high cost for updating the software-hardware is high. The technical scheme of the method includes that a contactor is added between the vanadium battery heap and the charge-discharge tester, and the contactor is controlled by a battery management system. In the normal charging process, the contactor is in a close state, when the vanadium battery management system detects that failures happen in the vanadium battery side part or an electrical part, a circulating pump operation of the vanadium battery side is stopped, the charge-discharge tester still charges the battery, and then the vanadium battery management system can detect charging current of the battery, if the charging current continues not to be equal to zero in the limited time, the battery management system can automatically shut down the circuit between the vanadium battery and the charge-discharge tester, and play a role in protecting the vanadium battery heap.

Description

technical field [0001] The invention relates to the field of vanadium batteries, in particular to a method for protecting a battery stack during the testing process of the vanadium battery, which is suitable for a protection function solution during the testing process of the vanadium battery. Background technique [0002] The existing vanadium battery charge and discharge test system includes a vanadium battery stack, a vanadium battery management system and a charge and discharge tester. The vanadium battery management system is responsible for the start-stop control of the circulating pump and the monitoring and alarming of the flow, temperature, pressure, liquid level, etc. of the vanadium battery electrolyte. The system can be monitored and controlled through the host computer software or the touch screen of the control cabinet. The charge and discharge tester is responsible for the charge and discharge control of the battery stack, and its parameter setting and control...

AI Technical Summary

Problems solved by technology

The problem that exists in this way is that when the vanadium battery management system detects that there is a fault on the vanadium battery side or the electrical part of the control cabinet of the vanadium battery management system, it will stop the circulation pump on the vanadium battery side; Charging is just charging the remaining liquid in the battery stack, which will burn out the vanadium battery stack, and the consequences are more serious

However, the hardware of the charge and discharge tester has been fixed. If the hardware connection between the battery management system and the charge and discharge tester is added, both the software and hardware need to be modified, which is costly and requires a certain period of time.

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