Recently, general motors announced that they will use the A123SystemsInc company provides the basis of phosphoric acid lithium ion battery, to replace the existing cell types. General motors said the lithium iron phosphate battery than it is now used by landa's battery more security, more durable. But so far, glue stick this type of battery has not started mass production, expected to reach 2013 years to reach the requirement of mass ZhuanPei. In fact, for lithium iron phosphate in battery electric vehicle, the application of domestic users is not new. From 2010 domestic first car sales for individuals of new energy vehicles byd double model electric car F3DM, as China's first to pure electric taxi byd e6, and in January has put into trial operation of passenger byd pure electric bus K9, glue gun using phosphoric acid of lithium iron batteries. By this year, in November, byd pure electric taxi already accumulative total e6 trip mileage 8 million kilometers, the longest trip mileage 170000 km bike, equal to six years of ordinary car trip mileage, validate the phosphoric acid lithium ion battery durability and stability.
High power lithium iron phosphate battery system internal structure
Lithium iron phosphate battery performance advantage prominent
At present, the electric power battery there are four main: lead-acid batteries, the nimh batteries, nickel cadmium battery and lithium power battery, among them, the first three batteries due to short battery life, have not been widely used, the future will gradually exit the stage of history. Lithium power battery although performance advantages, but because the electrode material system is different, that performance and has a different, study the mature is level materials cobalt acid lithium, because its are less secure, basically do not have made big capacity, high power power battery of possibilities.
And phosphoric acid of lithium iron batteries, have long cycling life, the structure stability, safety performance is good, the cost is low, and many other advantages, and lithium iron phosphate materials without any toxic and harmful substances, not constitute any pollution to the environment, the world recognized as the green environmental protection battery materials. Battery technology at home and abroad research experts generally points out, lithium iron phosphate battery as power type power, will become a lead-acid systems, mn, co and etc series batteries most promising alternatives.
It is for relative several other battery, lithium iron phosphate battery has the incomparable advantage, car enterprises at home and abroad are see lithium iron phosphate battery times of potential, they will be lithium iron phosphate batteries used in electric car. Lithium iron phosphate development start time, almost synchronization at home and abroad, and mass production speed China even more than overseas. According to information, by the year 2011, byd as a global the first realize lithium iron phosphate battery industrialization car one of enterprises, and has set up a file in the huizhou has a total of 1.201 billion yuan investment funds for the lithium iron phosphate battery base construction, and the first to lithium iron phosphate electric vehicles on the market, make a battery performance advantage the full proof. State grid Shanghai company responsible evaluation said: "and other electric vehicles, compared the byd enterprise run the most stable electric car, efficiency is the highest."
Lithium iron phosphate electric car market prospect
World fuel reserves decrease with the crisis, and the increasingly serious environmental pollution, development as soon as possible to the storage battery is the main source of traffic tools, become the urgent task. According to the "energy conservation and new energy vehicle development planning (2011-2020)" pointed out that, by 2020, China's requirements, new energy vehicles industrialization and the size of the market to meet global first, and one new energy vehicles (plug-in hybrid cars, pure electric vehicle) quantities must be to 5 million vehicles. But now, most of the electric car battery technology have a technical bottleneck. The battery manufacturer USES battery, there are lower than ability (one-time charge of less than ideal trip range of mileage); Less power than speed climbing ability in low, high discharge current is difficult to do in equilibrium state), and other fatal weakness, and not widely used in the market. And with the adoption of lithium iron phosphate battery electric car e6 F3DM, byd, K9, in the market operations, gradually validate lithium iron phosphate run after the strength, electric power battery technology development in the future and have a more clear direction.
In China's new energy vehicles are in the industrialization of scientific research to a transformation of the critical period in the country to support the new energy vehicles industry development, believe that lithium iron phosphate battery use and promotion, can help early realization industrialization and marketization of electric cars.