Lithium iron phosphate battery main advantage

Source: 2020 - 03 - 26 when hits: 1 introduces the lithium iron phosphate batteries, lithium-ion battery's full name, lithium iron phosphate is refers to the use of lithium iron phosphate as lithium ion battery anode material, tell me the battery here the naming rules of the industry, at present, we usually call the battery anode material, usually by graphite anode, cathode anode materials such as batteries, three yuan as sliding or NCA, cobalt acid lithium batteries, lithium cobalt acid used as the anode material, lithium iron phosphate as the anode materials for lithium iron phosphate. 2 the advantage of lithium iron phosphate battery main advantages: high security performance of lithium iron phosphate crystals in p - O key is stable, not easy to decompose. Even in the case of high temperature or overcharge, the structure will not collapse like lithium cobalt oxide to produce heat or forming strong oxidizing substances. The decomposition temperature of the lithium iron phosphate is about 600 ℃, with good security. Although in the case of overcharge, also has the burning and explosion, but the overcharge the security and the ordinary liquid electrolyte of lithium cobalt oxide batteries, three yuan compared to batteries, had the very big enhancement. Long life cycle life of lead acid battery is about 300 times, the maximum is about 500 times, and lithium iron phosphate battery cycle life of more than 2000 times, using the standard charge ( 0. 2 c, 5 hours) Can reach 2000 times. The same quality of lead-acid battery has a 'new six months, six months old, and trim six months', up to 1 ~ 1. 5 years, and lithium iron phosphate batteries in the same condition, the theory of life will reach 7 ~ 8 years. Overall, this performance than lead acid battery is the theory more than four times. Large current discharge can be large current fast charge and discharge, 2 c in the special charger, 1. 5 c make battery charging 40 minutes, starting current can be up to 2 c, but the performance of the lead-acid battery have no such. High temperature peak electrical performance of the lithium iron phosphate can reach 350 ℃ 500 ℃, and lithium manganese acid lithium cobalt oxide and electric peak only about 200 ℃. Working temperature range ( - 20c - +75C) , electric heating peak lithium iron phosphate with high temperature resistant properties of up to 350 ℃ 500 ℃, lithium cobalt and lithium manganese acid and acid only at about 200 ℃. The large capacity with than ordinary cell ( Such as lead-acid battery) Greater capacity, through the battery capacity density, the energy density of the lead-acid battery is about 40 wh/kg, mainstream of lithium iron phosphate batteries, the energy density were greater than 90 wh/kg. No memory effect when the rechargeable battery is full, their capacity will rapidly falling below the rated capacity. This phenomenon is called memory effect. Nickel metal hydride batteries and nickel-cadmium batteries, for example, have memories, but not for the lithium iron phosphate batteries (the phenomenon Lithium ion batteries generally no memory effect) 。 No matter in what state, can be used when charging, don't need to remove the recharging. Light weight capacity of the same specifications of the lithium iron phosphate battery for lead-acid battery two-thirds of the volume, volume weight as the 1/3 of lead-acid battery, the energy density for lead-acid battery several times. Environmentally friendly batteries generally do not contain any heavy metals and rare metals ( Nimh batteries need to rare metals) , non-toxic ( Through the SGS certification) , no pollution, in line with European RoHS regulations, for the green cells. To the lithium battery industry was an important reason for optimism is a concern for the environment. But one thing please face, lithium batteries belong to new energy industry is good, but it can not avoid the problem of heavy metal pollution. Such as lead, arsenic, cadmium, mercury and chromium metal materials could be released into the dust and water. The battery itself is a kind of chemicals, so there are two possible pollution: one is the process of production engineering in feces pollution; Secondly, after waste battery pollution. Compared to other materials at present, the power of the most promising anode materials in lithium ion batteries are mainly modified lithium manganese acid ( LiMn2O4) , lithium iron phosphate ( 磷酸铁锂) And lithium nickel manganese cobalt acid lithium ( Li( 倪、Co、锰) O2) The ternary material. Because of the lack of cobalt resources, high nickel and cobalt content and price fluctuations, it is generally believed that the NMC lithium ternary material is hard to become a mainstream power lithium ion battery electric vehicles, but it can be mixed spinel lithium manganese acid salt, within a certain range.