How the thermal runaway test chamber works?
As the valve-regulated battery uses a poor liquid design, the electrolyte poured into the battery is adsorbed on the fiberglass board. When the charging current increases, the gas needs to be released through the safety valve, which causes the battery to lose water and increase the internal resistance. The capacity decay and generate a lot of heat during charging and discharging.
If the heat is too late to diffuse and the temperature increases sharply, it will form a thermal runaway.
The cause of thermal runaway is not to reduce the float charge pressure in time, the safety valve is not strict or the valve opening pressure is too low, etc. If the thermal runaway is severely punished, f the battery is discharged, the instantaneous voltage drop and the battery shell temperature may rise to 70 ? ~ 80 ?, so the problem of thermal runaway must be paid great attention to.Thermal runaway is quite dangerous for batteries.
When the battery suffers severe thermal runaway, it may cause the battery to explode or burn.
It is worth noting that thermal runaway occurs on batteries with severe deterioration.
Therefore, keeping the capacity state of the storage battery stable and avoiding serious deterioration are effective means to avoid thermal runaway.
In addition, when thermal runaway occurs, the charging current of the battery will change significantly. The upper limit of the battery charging current should be set in the power supply to avoid thermal runaway caused by excessive charging current.
If you want to know more about the thermal runway test chamber, please click: https://belltestchamber.com/battery-test-chamber/thermal-runaway-test-machine
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