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To count the advantages of lithium iron phosphate batteries

by:Vglory      2020-12-07
Source: 2020 - 03 - 31 18:53 hits: number of times the advantages of lithium iron phosphate battery lithium iron phosphate batteries of the main advantages: high lithium iron phosphate crystals in p - security function O key is stable, not easy to decompose. Even in the case of high temperature or overcharge, also won't like lithium cobalt oxide the collapse of a structure or form strong oxidizing substances. The decomposition temperature of the lithium iron phosphate is about 600 ℃, with good security. Although in the case of happened in charge, there have been burning and explosion, but the safety of the overcharge with general electrolyte of lithium cobalt oxide batteries, three yuan compared to batteries, had the very big enhancement. Long 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, charging standards, 0. 2 c, 5 hours) Can reach 2000 times. The same quality of lead-acid battery has a 'new six months, six months old, half a year, trim six months', up to 1 ~ 1. Five years, and lithium iron phosphate batteries in the same condition, the theory of life will reach 7 ~ 8 years. In general, lead-acid battery is the theory function of price more than four times. Large current discharge can be large current fast charge and discharge, 2 c in the special charger, 1. 5 c 40 minutes can make the battery charging, the starting current can be up to 2 c, but lead-acid batteries have no this function. High temperature electric heating peak 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 has than the average cell ( Such as lead-acid battery) Greater capacity, battery can know after the density, the energy density of the lead-acid battery is about 40 wh/kg, the mainstream of the lithium iron phosphate battery, the energy density were greater than 90 wh/kg. Non- Rechargeable battery recall effect under the condition of the working conditions are often full, capacity quickly will be reduced below the value of additional capacity, this phenomenon is called the recall effect. Such as nickel metal hydride batteries, nickel cadmium battery recall phenomenon, and lithium iron phosphate batteries are no recall phenomenon ( Effects of lithium ion batteries are not usually present recall) 。 No matter in what state, can be used when charging, don't need to remove the battery recharging. Light weight specifications such as lithium iron phosphate battery capacity volume for lead-acid battery of two-thirds of the volume, the component of 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 ( 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 cannot prevent heavy metal pollution problems. In the process of metal processing, such as lead, arsenic, cadmium, mercury, chromium could be released into the dust and water. The battery itself is a kind of chemicals, so there may be two kinds of pollution: one is the waste pollution in the process of production; Second, the waste battery pollution in the future. Comparing to other data at present, power lithium ion battery most looking forward to the positive data is mainly modified lithium manganese acid ( LiMn2O4) , lithium iron phosphate ( 磷酸铁锂) Nickel and cobalt and manganese acid lithium ( Li( 倪、Co、锰) O2) Three metadata. Because of a lack of resources and the high price of cobalt nickel and cobalt and other reasons, it is generally believed that it is hard to be the main stream power lithium ion battery electric vehicles, but it can be mixed spinel lithium manganese oxide within a certain range.
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