Lithium battery safety testing is generally conducted separately for the cell and the pack. Each dimension must be systematically tested across three dimensions: safety, reliability, and safety protection. Testing primarily focuses on cycle life, rate capability, high-temperature performance, and low-temperature performance to provide safety assurance.

 

• Main safety test indicators of lithium-ion batteries

  • Squeeze test

    • Stop squeezing when the squeezing pressure reaches the maximum. The battery should not catch fire or explode.

  • Impact test

    • When a heavy object is dropped freely onto the battery from a high altitude, the battery should not catch fire or explode.

  • Overcharge test

    • When the battery is overcharged and the voltage reaches a certain limit, the battery should not catch fire or explode.

  • Short circuit test

    • After fully charging the battery, test the surface temperature of the battery. The battery should not catch fire or explode.

  • Acupuncture test

    • When a steel needle pierces the battery radially, the battery should not catch fire or explode.

  • Temperature test

    • Using rapid and extreme temperature changes, the battery should not catch fire, explode or leak after the test.