What are the test items for the safety and reliability of lithium iron phosphate batteries?

Lithium iron phosphate battery safety and reliability test items General lithium iron phosphate battery test items include: internal short circuit test, continuous charge test, overcharge, high current charge, forced discharge, drop test, drop test from height, penetration test, plane Crushing test, cutting test, shelving test in low pressure, heat torture test, water immersion test, burning test, high pressure test, baking test, electronic furnace test, etc. 1. Squeeze test: Place a fully charged lithium iron phosphate battery on a flat surface, apply a pressure of 13±1KN by a hydraulic cylinder, and squeeze the battery from the flat surface of a steel rod with a diameter of 32mm. Once the pressure is squeezed Stop squeezing when it reaches the maximum, the battery does not catch fire and does not explode. 2. Impact test: After the battery is fully charged, place it on a flat surface, place a steel column with a diameter of 15.8mm vertically in the center of the battery, and drop a 9.1kg weight freely from a height of 610mm onto the steel column above the battery. Lithium batteries do not catch fire or explode. 3. Overcharge test: Fully charge the lithium iron phosphate battery with 1C, and perform an overcharge test according to 3C overcharge 10V. When the battery is overcharged, the voltage rises to a certain voltage and stabilizes for a period of time, and the battery voltage rises rapidly when it is close to the time. When it rises to a certain limit, the top hat of the battery is broken and the voltage drops to 0V, and the lithium battery does not catch fire or explode. 4. Short circuit test: After the battery is fully charged, the positive and negative electrodes of the battery are short-circuited with a wire with a resistance of not more than 50m, and the surface temperature of the battery is tested. The maximum temperature of the battery surface is 140°C. The battery cap is opened, and the battery does not catch fire or explode. . 5. Acupuncture test: Place the fully charged battery on a flat surface, and pierce the battery in the radial direction with a steel needle with a diameter of 3mm. Test the lithium battery pack without fire or explosion. 6. Temperature cycle test: The temperature cycle test of lithium iron phosphate battery is used to simulate the safety of lithium battery when it is repeatedly exposed to low temperature and high temperature during transportation or storage. The test uses rapid and extreme temperature changes. ongoing. After the test, the sample should not fire, explode, or leak. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How about daily maintenance and maintenance of electric vehicle batteries?