In March this year, the “blade battery” launched by electric car manufacturer BYD triggered the power of the powerful lithium-ion battery route for new energy vehicles.. Can this “revolutionary battery” change the development direction of future new energy cars? “Global Times” reporter has recently entered its production base.
The Fudi Battery Factory in Lushan, Chongqing is the only production base of “blade battery”. Sun Huadun, deputy general manager of Fudi Battery Company, introduced the “Global Times” reporter, “The blade battery is extremely demanding the requirements of the production environment..
In order to minimize the short-circuiting of the battery, the factory must ensure that the particles of 5 microns in the diameter of 5 microns are not more than 29 in the 1 cubic meter space.. “Accordingly, it is arranged in an array of” blade “by introducing a monomer” blade battery “, which is 96 cm, 9 cm, high 1.
35 cm, in the array, inserted into the battery pack as” blade “, can form a honeycomb aluminum plate Structure. In this way, while the superior strength of the battery is achieved, the safety performance of the battery pack is also greatly improved, and the volume utilization is increased by more than 50%..
When talking about why the “blade battery”, Sun Huajun said that in the past few years, due to the new energy car subsidy policy to endless mileage and the energy density of the power lithium-ion battery, the traditional lithium iron ion battery is gradually being energy density Higher ternary lithium-ion battery is behind. However, the advantages of lithium iron phosphate ion batteries are higher safety. “Blade Battery” technology not only increases the energy density of lithium iron phosphate ion batteries, but also retains safety features.
In BYD, in BYD, in the battery packing test showed the “Global Times” reporter, the simulation was short-circuited when the battery was short-circuited, and the three-yuan lithium-ion battery instantly broke, the fire was four splashes, “the blade battery” but “the heart is so water”, there is no open fire No smoke. However, the three-yuan lithium-ion battery is still mainstream in the market, and the lithium phosphate ion battery wants to rely on “blade battery”..
According to the data of the research institution EVTANK, this year’s 1-in April, my country’s domestic three-yuan lithium-ion battery installed volume increased to 72.87%, while the amount of lithium iron phosphate ion battery fell to 22.93%.
. In addition, with the development of new technology and new materials, future power lithium-ion batteries will not limit between lithium iron phosphate ion batteries and ternary lithium ion batteries. Li Yunfei, deputy general manager of BYD Auto Sales, also made boldly predictions on the future development of new energy vehicles.
“After 5 years, charging supporting facilities will be much better than now – the company, home, shopping malls, highways have charging piles, no Necessary to ensure life, let the car put so many batteries. From a practical perspective, if it is a personal use, the new energy car battery life is enough. “.