How does a pressure relief valve work?

The valves also maintain the continuous pressure compensation required for normal battery operation. If a battery gets damaged, liquid electrolytes can escape into the battery housing as hot gases. These must then be released into the environment very rapidly and in a controlled process through a pressure relief valve.

Can a pressure relief valve prevent a thermal runaway?

Installing an electric-controlled pressure relief valve with battery fault detection capability on a liquid-cooled battery pack can prevent explosions caused by thermal runaway. 1. Introduction

What is a pressure relief valve (PRV) on a LCBP?

The inherent safety issues associated with LIBs are difficult to eliminate . Pressure relief valve (PRV) on LCBPs serves as crucial backup protection devices, effectively reducing the accumulation and explosive potential of FEGs .

Can a PRV be opened after a battery safety valve is opened?

Experimental tests have shown that conventional PRV that rely on pressure differentials are difficult to open in time after the battery safety valve is opened. The VE generated during battery TR cannot pass through the PRV membrane. In addition, numerical studies revealed that larger sizes of PRV are better.

How does the size of a PRV affect pressure relief efficiency?

The size of the PRV largely determined the pressure relief efficiency. The front panel of the pack was equipped with BMS, circuit breakers, terminal blocks, liquid cooling pipeline controllers, etc., which imposed strict restrictions on the size of the PRV.

Are electrochemical energy storage power stations safe?

Such as the thermal-electrical-chemical abuses led to safety accidents is increasing, which is a serious challenge for large-scale commercial application of electrochemical energy storage power stations (EESS).