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source:Industry News release time:2024-08-16 Hits: Popular:AG11 battery
1. Improve safety factor
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 structurally, generate heat, or form strong oxides like lithium cobalt oxide, thus having good safety. Some people have pointed out that during the operation, a small number of samples were found to burn during needle puncture or short circuit experiments, but no explosion accidents occurred. In the overcharge experiment, high-voltage charging was used several times higher than its discharge voltage, and it was found that there was still an explosion. However, compared with ordinary liquid electrolytes, the overcharge safety of lithium cobalt oxide batteries has been greatly improved.
2. Improvement in lifespan
Lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphate as the positive electrode material.
The cycle life of long-life lead-acid batteries is about 300 times, which is 500 times, while the cycle life of lithium iron phosphate power batteries is about 2000 times, and standard charging (5-hour rate) can reach 2000 times. Lead acid batteries of the same quality are "new half year, old half year, and maintenance half year", usually lasting 1-1.5 years, while lithium iron phosphate batteries, when used under the same conditions, have a theoretical lifespan of 7-8 years. Taking into full consideration, theoretically, the performance price is more than four times that of lead-acid batteries. High current discharge can quickly charge and discharge high current 2C. Under a dedicated charger, the 1.5C charging time is 40 minutes.
3. Good high-temperature performance
The peak temperature of lithium iron phosphate can reach 350 ℃ -500 ℃, while lithium manganese oxide and lithium cobalt oxide are only around 200 ℃. The temperature range is wide (-20C-75C), and the electric heating peak of lithium iron phosphate can reach 350 ℃ -500 ℃, while lithium manganese oxide and lithium cobalt oxide are only around 200 ℃.
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