1. When the temperature of 3C lithium ion battery is too high, the active substance of the positive material will automatically decompose, and the electrolyte will be oxidized, generating a lot of heat, further improving the battery temperature and affecting the battery stability; When the temperature is too high, the negative pole of the battery will react exothermically with the electrolyte, causing the battery to overheat, burn and explode, which is dangerous

2. Process The manufacturing process of 3C lithium ion battery shall be standardized and strict. In the manufacturing process, the battery material quality, slurry uniformity, coating and cutting control are very important. Each process will affect the safety performance and quality of the battery. The manufacturing process of 3C lithium ion battery can be divided into positive and negative material mixing, coating, cutting, punching, rolling, electrolyte filling, forming, volume division, sealing, assembly, etc

3. In the process of using 3C lithium ion battery, if the method is not appropriate, it may also cause potential safety hazards to the battery. For example, if the battery is overcharged and discharged during charging, charging for a long time will cause the battery to expand. Once the internal temperature exceeds the set value, the battery may be short circuited in extreme cases, resulting in battery burning or explosion

4. The non-standard testing of 3C lithium-ion batteries will lead to the introduction of low-quality batteries with unstable performance into the market, making batteries with potential safety hazards even more unsafe. Therefore, the focus of 3C lithium-ion battery testing is to standardize the testing process, select appropriate battery test modules, strictly record the test results, and rework the batteries with quality problems.