Polymer lithium battery short circuit?

Source: 2020 - 03 - 26 'hits: lithium polymer battery short-circuit reasons when polymer lithium-ion rechargeable, when the battery overcharge or overdischarge, chargers and mobile power supply do not match. Battery overcharge easily. The expansion of the polymer lithium ion battery possibility will increase. When the battery charge and discharge, the battery is on the rise, gas expansion in the process of activation, cell pressure rise, pressure reaches a certain level. If the shell has a defect, it will burst and cause a fire or explosion. And edge sealing of maintenance problems. Lu: su composite film packaging material at the edge of the sealing surface layer of pure aluminum, has good conductivity, so when use strong insulation block measures must be taken. In order to avoid short circuit, external components inside the battery may produce corrosion and gas. Cycle life of lithium iron phosphate battery pack is 5000 times the balance capacity of 84%, three times the cycle life of lithium iron phosphate battery pack for 3900 times the balance 66% of capacity, cycle life compared to the advantages of lithium iron phosphate battery is more significant. Assumes that the residual capacity/initial capacity = 80% test breakpoints, cycle life of lithium iron phosphate battery lab 1 c for more than 3500 times, 5000 times, and the ternary lithium battery lab 1 c 2500 times the cycle life of arrangement. In this point, the cycle life of lithium iron phosphate battery actual life than ternary lithium batteries much longer. Under the general cycles, lithium iron phosphate battery remaining capacity is greater than the ternary lithium battery. In addition to the vast difference between the two batteries on the cycle of life, the security of two kinds of battery is not the same. Look on the road, lithium iron phosphate batteries and ternary lithium battery charging times are more than 2000 times, kua chi, charging for you all day, can be used more than 5 years. And the electric vehicle charging once three days, so the lithium iron phosphate batteries and ternary lithium battery life natural enough to 8 years. Presuming a charge discharge cycles, 1000 times before essence 3 yuan lithium battery decay to 50%, that is half full of electricity can only run the original process. Lithium iron phosphate battery pack, cycle life can reach more than 2000 times, the standard charge ( 5 hours charge rate) , can reach more than 2000 times. Lead-acid battery is the total quality of 'new six months, six months old, maintenance, and six months', at most is also 1 ~ 1. 5 years, and lithium iron phosphate battery in the premise of a common appearance life will reach 7 ~ 8 years. In short, the nature is more than four times more expensive than the appearance of the lead-acid battery. Large current and large current charging 2 c can be quickly closed, in bo charger, 1. 5 c 40 minutes can make the battery charging, the current can be up to 2 c, while lead-acid batteries do not have this feature