Service details 1. Squeeze test: Place the fully charged battery on a flat surface, apply a squeeze pressure of 13 ± 1KN by an oil pressure cylinder, and squeeze the battery using a steel rod with a diameter of 32mm. Once the squeeze pressure reaches its maximum, stop squeezing, and the lithium battery will not ignite or explode. 2. Impact test: After the lithium battery is fully charged, place it on a flat surface, vertically place a 15.8mm diameter steel column at the center of the battery, and freely drop a weight of 9.1kg from a height of 610mm onto the steel column above the battery. The battery should not ignite or explode. 3. Overcharge test: Fully charge the battery with 1C and conduct an overcharge test according to 3C overcharge of 10V. When the battery overcharges, the voltage rises to a certain level and stabilizes for a period of time. When it approaches a certain level, the battery voltage rapidly increases. When it reaches a certain limit, the battery cap is pulled off and the voltage drops to 0V. It is sufficient that the battery does not catch fire or explode. 4. Short circuit test: After fully charging the battery, use a wire with a resistance of no more than 50m Ω to short circuit the positive and negative poles of the battery. Test the surface temperature change of the battery, and the maximum surface temperature of the battery is 15201733840 ℃. Pull the battery cap open, and the lithium battery will not ignite or explode. 5. Needle test: Place a fully charged battery on a flat surface and use a 3mm diameter steel needle to pierce the battery radially. Testing that the battery does not ignite or explode is sufficient. 6. Temperature cycling test: The temperature cycling test of lithium-ion batteries is used to simulate the safety of lithium-ion batteries during transportation or storage, repeatedly exposed to low and high temperature environments. The test is conducted using rapid and extreme temperature changes. After the test, the sample should not ignite, explode, or leak liquid. 1. Please fill in the content related to the testing service. 2. To ensure the normal display of the content, please upload the images locally. The image format only supports JPGGIF format. 3. The testing details will help you understand your testing content. Please fill them out carefully. 4. The content cannot include any contact information such as phone, email, QQ, website, QR code, etc. The function of contacting us will be automatically added at the bottom of the news The above article is a partial list. For more testing needs and details, please consult the online consultant of the free consulting agency: 152 0173 3840 (phone and WeChat), conducting testing on over a hundred inspection websites - issuing authoritative testing reports has legal effect
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