Analysis of lithium iron phosphate battery quick charging technology

Source: 2020 - 03 - 23 14:58 hits: lithium iron phosphate battery fast different battery data systems have different advantages and disadvantages, the new battery data system appear constantly, present a trend 'is better than blue. Especially in electric buses three metadata is released, the system has become more and more popular. As the mainstay of the battery data system as its energy density is more and more close to the ceiling, what other killer can guarantee data lithium iron phosphate system can exist independently in the market? The development prospects of lithium iron phosphate battery has been widely concerned. Of the lithium iron phosphate 'crisis' and' machine 'the positive data including lithium cobalt acid lithium ion batteries, lithium manganese acid, lithium nickel acid, lithium iron phosphate, three metadata, etc. On the working principle, and lithium iron phosphate lithium ion of embedding/to the embedding process, same as the lithium cobalt oxide, lithium manganese acid etc. Is often compared to lithium iron phosphate ternary lithium battery, this is also the focus of debate. Under a certain temperature information differentiation attack, three metadata in 200 degrees Celsius, the onset of differentiation and lithium iron phosphate material differentiation at 800 degrees Celsius, which means that the ternary information are more likely to be 'pieces' fire accident, the ternary lithium iron phosphate battery needs to be done and the same level of security level, higher skills and technical requirements. But lower than the energy density of lithium iron phosphate battery three yuan. Lithium iron phosphate battery energy density is about 145 wh/kg, and the ternary lithium battery energy density is relatively high, the energy density of the ternary lithium battery is about 220 wh/kg. Therefore, in view of the data characteristics of the lithium iron phosphate, frequent transmission in industry of lithium iron phosphate battery energy density is limited, the future may be replaced by other battery system. At present in the case of more attention paid to the intellectual property rights, lack of lithium iron phosphate is 3 yuan, restricting the development of lithium iron phosphate batteries. The first application for a patent for lithium iron phosphate by FXMITTERMAIER& SOEHNEOHG ( 德) On June 25, 1993, and in 1993 on August 19, the application results. The university of Texas ( 德克萨斯大学) Hold the lithium iron phosphate ( li - iron phosphate) The foundation of the patent, and Canadian patent application for the carbon coating, it is difficult to bypass. Institutions and the auto industry in 2017 of nickel cobalt manganese ternary lithium battery industry's global patent statistics show that whether other countries patent layout is still in China, technological innovation protection consciousness, the ternary lithium battery manganese cobalt nickel technology development hot spot, nickel cobalt manganese ternary lithium battery patent application in China is the world's leading. Therefore, in terms of patent, the advantage of the lithium iron phosphate as ternary batteries. In terms of energy density, the upper limit of the lithium iron phosphate is slightly low, almost no space, but it provides users with a window on the charging rate. Quick charge as the new energy vehicles development path must be overcome by technology, in alleviating anxiety, shorten the charging time driving distance has obvious effect. Quick charge, therefore, has become the development direction of motors and batteries, is also one of the highlights of the lithium iron phosphate battery application future. Release the end of December 2016, in addition, the new energy car allowance adjustment scheme, '3 c - 5 c and 5 c - 15, 15 c + c 'three levels of fast charging rate, 0 respectively. Eight times, 1, 1. 4 times, under the encouragement of policy, using lithium iron phosphate skills enterprise increased efforts to develop the fast charging, quick charging of lithium iron phosphate batteries made a new breakthrough.