Why can the service life of lithium iron phosphate batteries reach 8 years and why?
2022-04-07
Lithium iron phosphate battery refers to a Lithium Ion Battery that uses lithium iron phosphate as a positive electrode material. Compared to other batteries, its lifespan has been greatly improved. Take a simple example The cycle life of long-life lead-acid batteries is about 300 times, and the maximum is 500 times, while the cycle life of lithium iron phosphate power batteries can reach more than 2,000 times, and the standard charging (5-hour rate) can reach 2,000 times. The lead-acid battery of the same quality is "new half year, old half year, and maintenance and maintenance for half a year", which is 1~1.5 years at most, and lithium iron phosphate battery is used under the same conditions, the theoretical life will reach 7~8 years. Comprehensive consideration, the performance-price ratio is theoretically more than 4 times that of lead-acid batteries. High-current discharge can quickly charge and discharge high-current 2C, under the special charger, the battery can be fully charged within 40 minutes of 1.5C charging, and the starting current can reach 2C, but lead-acid batteries do not have this performance. Similarly, the lithium iron phosphate battery also has the characteristics of good high temperature performance, no memory effect, and large capacity. For the same example, compare The electric heating peak of lithium iron phosphate can reach 350℃-500℃, while lithium manganate and lithium cobaltate are only around 200℃. The working temperature range is wide (-20C--+75C), which has more powerful high temperature resistance characteristics. Lithium iron phosphate battery capacity is 5AH-1000AH (single) The capacity of an ordinary lead-acid battery is 24AH (single) (this value may be different, and the battery of an electric vehicle is almost the same on weekdays. If it is different, it may be a different model of the electric vehicle.) First explain what the memory effect is: Rechargeable batteries often work under the condition of being fully charged, and the capacity will quickly drop below the rated capacity. This phenomenon is called the memory effect. Like nickel-metal hydride and nickel-cadmium batteries, there is memory, but lithium iron phosphate batteries do not have this phenomenon. No matter what state the battery is in, it can be used at any time without having to discharge it before charging. By the way, lithium iron phosphate batteries are more environmentally friendly. Lithium iron phosphate batteries are generally considered to be free of any heavy metals and rare metals (nickel-metal hydride batteries require rare metals), non-toxic (SGS certified), non-polluting, comply with European RoHS regulations, and are an absolute green battery certificate.
