2020 March 29, in Shenzhen Satellite TV “super conference” column, BYD officially released the long-awaited “Blade battery.” In the world of new energy vehicle market, the battery life is still the biggest problem hindering the development of electric vehicles. Only battery technology continue to innovate and break through the cell attributes in order to cross this bottleneck battery life. It can be said in the field of new energy vehicles, who mastered the advanced battery technology, grasps the future of electric vehicles.
BYD chairman and president Wang Chuanfu, BYD Group Vice President and Chief Verde battery Ho, chairman of Long attended the “Blade battery” conference, and “blade battery” made a technical explanation. BYD chairman and president Wang Chuanfu said: “Blade battery reflects the determination of new energy vehicles BYD complete end security pain points, more capacity will lead the global battery technology road back to the right path, the spontaneous combustion of the word dictionary from the new energy vehicles in total erase”.
battery safety, has been a point groove of electric vehicles, only to solve security pain points, consumers can feel comfortable buying. Some Internet users before the safety of “Blade battery” questioned, BYD broadcast a Comparison of three battery acupuncture test video conference the same day, this video not only respond to users questioned, also proved that BYD “Blade battery “it has rid itself of” thermal runaway. ”
The video display is a ternary lithium battery, lithium iron phosphate batteries, insert the battery under the same test conditions commonly accepted “needle penetration tests.” “Needle penetration test” is recognized in the industry for the safety of the battery cell the most stringent testing methods. This test requires a needle to pierce the power of the battery cell, causing extensive internal short circuit batteries. Ternary lithium present in the video needling instant severe temperature changes, quickly exceeded the surface temperature of 500 ℃, and the occurrence of extreme thermal runaway – intense burning phenomenon, the egg cell surface blown; traditional massive iron phosphate lithium battery after the puncture is no fire, smoke, the surface temperature reaches 200 ℃ -400 ℃, the egg surface is scorched battery temperature; BYD “blade cell” no flame after penetration, only the temperature of smoking, cell surface about 30-60 ℃,No change in the surface of the egg cell, still in a flowable liquid state.
A few years ago, ternary lithium batteries and lithium iron phosphate rivalry in new energy vehicles. Finally, three lithium batteries because of its high energy density advantage to win. Although the usage of lithium iron phosphate lithium three yuan has long been left behind, but BYD did not give up innovation of lithium iron phosphate. Although the relatively low density of lithium iron phosphate, but its thermal stability is much higher than three yuan lithium battery.
“Blade cell” lithium iron phosphate cathode material, BYD by a novel structure, when the group can be skipped “module”, substantially increased volume utilization, and ultimately reach more batteries loaded in the same space design goals. Compared with a conventional battery pack module, “Blade battery” volumetric efficiency improved 50% or more, the mileage has reached the same level of high energy lithium batteries three yuan. While substantially increasing the mass energy density of the system and the volume energy density, due to the removal of the “module” This intermediate layer structure, so that the complexity of the battery system dropped, thereby also resulting in higher and more stable products low failure rate.
In addition, BYD Group Vice President and Chief Verde battery, chairman of He Long said in the press conference: “You can think of almost all car brands, and we are to explore based on cooperation programs blade battery technology, I believe we will soon be able to see, hear blade battery more exciting news. ”
BYD virtue of the new energy strategy forward-looking deep, strong innovation capabilities and strong technical accumulation, the battery will eventually achieve the ultimate security. “Blade Battery” not only has the security of other battery can not be compared, but also both a long life and a long life. The “Blade battery” redefines safety standards for new energy vehicles, to lead a new level of global battery safety.