-Important advantages and disadvantages of lithium iron phosphate batteries

Important advantages and disadvantages of lithium iron phosphate batteries
author:enerbyte source:本站 click138 Release date: 2023-12-07 09:02:56
abstract:
1、 Important advantages of lithium iron phosphate batteries: High safety performance The P-O bond in lithium iron phosphate crystals is stable and difficult to decompose. Even at high temperatures or overcharging, it will not collapse and generate heat or...

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1、 Important advantages of lithium iron phosphate batteries:

High safety performance

The P-O bond in lithium iron phosphate crystals is stable and difficult to decompose. Even at high temperatures or overcharging, it will not collapse and generate heat or form strong oxidizing substances like lithium cobalt oxide. The decomposition temperature of lithium iron phosphate is about 600 ℃, so it has good safety. Although combustion and explosion may occur during overcharging, its overcharging safety has been greatly improved compared to ordinary liquid electrolyte lithium cobalt ion batteries and ternary batteries.

Long lifespan

The cycle life of lead-acid batteries is about 300 times, with a maximum of about 500 times, while lithium iron phosphate power batteries have a cycle life of over 2000 times and can be used up to 2000 times with standard charging (0.2C, 5 hours). Lead acid batteries of the same quality can last for six months, including new and old ones, as well as six months of repair and repair, with a maximum of 1-1.5 years. However, when used under the same conditions, lithium iron phosphate batteries have a theoretical lifespan of 7-8 years. Overall, the cost performance ratio is more than 4 times that of lead-acid batteries in theory. High current discharge can quickly charge and discharge at a high current of 2C. With a dedicated charger, the battery can be fully charged within 40 minutes at 1.5C, and the starting current can reach 2C. However, lead-acid batteries do not have this performance.

Good high-temperature performance

The electric heating peak of lithium iron phosphate can reach 350 ℃ -500 ℃, while lithium manganese oxide and lithium cobalt oxide are only around 200 ℃. The working temperature range is wide (-20C -+75C), and it has high temperature resistance. The electric peak of lithium iron phosphate can reach 350 ℃ -500 ℃, while lithium manganese oxide and lithium cobalt oxide are only around 200 ℃.

Large capacity

It has a larger capacity than ordinary batteries (such as lead-acid). Based on the capacity density of the battery, it can be understood that the energy density of lead-acid batteries is about 40WH/kg. The mainstream lithium iron phosphate batteries in the market have an energy density of over 90WH/kg.

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