What are the differences in design between power lithium-ion batteries and ordinary lithium-ion batteries?

1. When developing and designing lithium iron phosphate power lithium-ion batteries, more consideration should be given to reliability and consistency. After all, it takes a long time (at least 5 to 10 years), harsh environments (low temperature in winter, exposure to sunlight in summer, rain and snow), A large number of batteries are used in series and parallel. Considering reliability and consistency, assuming that a car uses 1,000 power lithium batteries, ideally, the car manufacturer hopes that there will be no problems with the scale of 100,000 vehicles per model, which is ideally required The probability of problems with power lithium batteries (safety, storage, circulation, etc.) is less than one in 100 million (of course, for the highest-end consumer batteries, Apple also requires suppliers to this level). Considering reliability, power batteries are generally designed with more redundancy, using thicker diaphragms, foils and casings, so the energy density is about half of that of consumer batteries. 2. In the Ru0026D and design of ordinary consumer lithium-ion batteries, safety and durability are more important, and there is no need for long-term reliability (the cycle does not need to be too good, because it will be replaced in one or two years anyway), generally do not match Used alone, there is not much requirement for consistency. However, due to the limited space and preciousness of consumer mobile phones and pads, consumer lithium-ion batteries have strict requirements on size, capacity, and energy density. 3. The difference between power lithium-ion battery and ordinary lithium-ion battery. Regarding product safety, power lithium battery has more external protection circuits, heat dissipation layout, etc., of course, it also faces more severe conditions (higher external voltage, larger High current, more complex external environment), consumer batteries have less protection, and on the basis of higher energy density, the materials and design of the battery can withstand various safety threats; while the high-end consumer mobile phone lithium ion The battery uses the most advanced technology and materials, and the power lithium battery requires more advanced process control, consistency control and quality management. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis on the correct use of low-temperature lithium-ion batteries