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U Home Green Electric is committed to the research and development and production of new energy products. New energy has been widely used in various fields, including home energy storage, commercial energy storage, communication base stations, forklifts, AGVs, robots, electric motorcycles, UPS power supplies, medical electronics, power tools, etc. The product has the characteristics of high safety, high reliability and high convenience, and has broad market prospects and application value. It is the preferred product for transforming the earth's environment and saving energy.
1. Improvement of safety performance of lithium iron phosphate battery
The P-O bond in the lithium iron phosphate crystal is stable and difficult to decompose. Even at high temperature or overcharge, it will not collapse and generate heat like lithium cobalt oxide or form strong oxidizing substances, so it has good safety. A report pointed out that in the actual operation, a small number of samples were found to burn in the acupuncture or short-circuit experiments, but no explosion occurred. In the overcharge experiment, a high-voltage charge that was many times higher than the self-discharge voltage was used. There is an explosion. Even so, its overcharge safety has been greatly improved compared with ordinary liquid electrolyte lithium cobalt oxide batteries.
2. Improve the life of lithium iron phosphate battery
Lithium iron phosphate battery refers to a lithium ion battery that uses lithium iron phosphate as a positive electrode material.
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) use can reach 2,000 times. The same quality The lead-acid battery is T new half year, old half year, maintenance and maintenance for half a year", at most 1~1.5 years, while 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 be quickly charged and discharged at 2C with a large current. Under a special charger, the battery can be fully charged within 40 minutes after charging at 1.5C, and the starting current can reach 2C. lead-acid batteries do not have this performance.
3. lithium iron phosphate battery high temperature
The electric heating peak of lithium iron phosphate can reach 350C-500°C, while lithium manganate and lithium cobaltate are only around 200°C. Wide operating temperature range (-20C--75C), with high temperature resistance, the electric heating peak of lithium iron phosphate can reach 350°C-500°C, while lithium manganate and lithium cobaltate are only around 200°C.
∩Rechargeable batteries often work under the condition of being fully charged and not fully discharged, and the capacity will quickly drop below the rated capacity value. This phenomenon is called 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.
5. lithium iron phosphate battery is light in weight
The volume of the ithium iron phosphate battery with the same specification and capacity is 2/3 of the volume of the lead-acid battery, and the weight is 1/3 of the lead-acid battery.
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. Therefore, the reason why lithium batteries are favored by the industry is mainly due to environmental protection considerations. Therefore, the battery has been included in the "863" national high-tech development plan during the "10th Five-Year Plan" period, and has become a key project supported and encouraged by the state. With China's entry into the WTO, the export volume of China's electric bicycles will increase rapidly, and electric bicycles entering Europe and the United States have been required to be equipped with non-polluting batteries.
