What are the requirements for the constant damp heat test for lithium-ion batteries?

Lithium-ion batteries need to undergo a constant damp heat test to verify their reliability and safety. How to do the constant damp heat test of lithium-ion batteries? What kind of constant damp heat test chamber is used? Let's find out.

Lithium-ion battery constant damp heat test:

Test equipment: constant temperature and humidity test chamber / high and low temperature humidity and heat alternating chamber

Equipment Model: Huanyi Instrument HYH Series

Test requirements:

1. High temperature test: test temperature (65±2)℃, duration 16h;

After the test, the sample was taken out, and under normal atmospheric pressure conditions and an ambient temperature of (20 ± 5) ℃, the storage time was not less than 4 hours, and the appearance of the sample was visually inspected.

2. Low temperature test: test temperature (-20±3)℃, duration 16h;

After the test, the sample was taken out, and under normal atmospheric pressure conditions and an ambient temperature of (20 ± 5) ℃, the storage time was not less than 4 hours, and the appearance of the sample was visually inspected.

3. Constant damp heat test: test temperature (40±2)℃, relative humidity (90~95)%, duration 4h;

After the test, the sample was taken out, and under normal atmospheric pressure conditions and an ambient temperature of (20 ± 5) ℃, the storage time was not less than 4 hours, and the appearance of the sample was visually inspected.

Technical parameters of constant temperature and humidity test chamber:

Temperature range: 0℃;-20℃;-40℃;-60℃;-70℃～+100℃(+150℃)

Humidity range: 10%～98%.（at15℃～85℃）

Analytical accuracy: Temperature: + 0.01℃ / Humidity: +0.01 %RH.

Fluctuation: Temperature ±0.2℃ / Humidity ±2.5%R.H.

Heating time +25℃→+100℃≤30min

Cooling time +25℃→-40℃≤55min

If you want to know more about product testing solutions, you can visit the official website of "Huanyi Instrument" and consult our technical staff.