The price of lithium iron phosphate batteries advantages and disadvantages

Source: 2020 - 03 - 25 thy hits: what is the price of lithium iron phosphate batteries? Eight advantage? The shortcoming of the lithium iron phosphate batteries? What is the lithium iron phosphate battery lithium iron phosphate batteries belong to lithium ion secondary battery, used as power battery at a time, compared with the nimh batteries, nickel metal hydride battery has a great advantage. Lithium iron phosphate battery charge and discharge efficiency is higher, is between 85% ~ 90%. Lead-acid batteries account for about 80%. What is the advantages and disadvantages of lithium iron phosphate batteries ( 1) Eight advantages of lithium iron phosphate battery of lithium iron phosphate crystal security features to improve the p - O key is stable and not easy to form. Even under the condition of high temperature or overcharge, also won't collapse like lithium cobalt oxide to produce heat or form strong oxidizing substances, with good security. According to the report, in practice, small local samples in the needle or short circuit experiments were extinguished, but no blasting operation occurred at a time. The overcharge test, however, are still found in under high voltage overcharge, the discharge voltage is several times their own discharge voltage after blasting phenomenon will still occur. So, of course, the overcharge safety than the average electrolyte of lithium cobalt oxide battery had the very big enhancement. Improve longevity short life cycle life of lead acid battery is about 300 times, up to 500 times, and lithium iron phosphate batteries, cycle life of 2000 times more than, the standard charge ( 5 hour rates) , can reach 2000 times. Lead-acid batteries are of the same quality 'new six months, six months old, protection and protection of six months', at best, but 1 ~ 1. 5 years, and lithium iron phosphate batteries, under the same condition, the theory of life will reach 7 ~ 8 years. Comprehensive consideration, the function cost theory more than four times higher than that of lead-acid batteries. If use dedicated charger, charging 1. 5 c within 40 minutes after can be full of battery, starting current can be up to 2 c. However, lead-acid battery don't have this feature now. 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) , high temperature resistant properties of lithium iron phosphate peak of up to 350 ℃ - electric heating 500 ℃, lithium cobalt and lithium manganese acid and acid only at about 200 ℃. The large capacity its capacity than conventional cells ( Lead-acid batteries, etc. ) Big. 5 - 1000. ( Monomer) No memory effect rechargeable batteries work often in the case of continuous charging and discharging, its capacity will be lower than the value of the additional capacity soon. This phenomenon is called memory effect. For example, nickel metal hydride batteries and nickel-cadmium battery has a memory function, and lithium iron phosphate batteries would not have this kind of phenomenon. No matter in what state, it can be used when charging, and don't have to remove the batteries to recharge. Light weight equivalent capacity of lithium iron phosphate battery is two-thirds the size of lead-acid battery, a third of the lead-acid battery weight. Environmental protection battery 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 absolute green battery certification. Lithium battery industry is optimistic, therefore, the first is environmental protection, so the battery was listed in the '15' during the '863' national high-tech development plan, become a national key project support and encouragement. Along with our country joining WTO, our country electric bicycle exports will increase rapidly, in Europe and the United States electric bikes are begged to be equipped with pollution-free battery. ( 2) The disadvantage of the lithium iron phosphate battery 1. In the sintering process of preparation of lithium iron phosphate, ferric oxide could be restorative atmosphere at high temperature for reduction of elemental iron. Simple iron will cause the battery short circuit, is the most taboo in battery materials. This is why Japan has refused to this kind of material will be used for the main reason of power lithium ion battery anode. 2. Lithium iron phosphate has some functional defects, such as low density, low degree of compaction, vibration in lithium-ion battery energy density is low. Low temperature function is poor, even nanometer carbon coating is not solve the problem.