BYD lithium iron phosphate battery technology -Lithium - Ion Battery Equipment
"BYD Blade Battery has single-handedly pulled lithium iron phosphate back from marginalization," said Wang Chuanfu, chairman and president of BYD Co., Ltd.
Over the years, BYD has always adhered to the lithium iron phosphate route in the field of power lithium batteries. Although some major models have also been equipped with ternary lithium batteries, this car company started with batteries, and finally changed the shape of the lithium iron phosphate power lithium battery by changing the object shape. , so that this seemingly "traditional" technical route can be reborn, achieving long battery life, high stability and high safety, and equipping all BYD models.(Lithium - Ion Battery Equipment)
Stick to the lithium iron phosphate route
Lithium iron phosphate power lithium batteries have been criticized for low energy density and short cruising range. In recent years, the market share has once given way to ternary lithium batteries. In March 2020, the lithium iron phosphate blade battery was launched and mass-produced.
"BYD has launched two major technologies, blade battery and DMI super hybrid. The blade battery is used to solve safe power, and the DMI super hybrid is used to solve the replacement of fuel vehicles." Wang Chuanfu said.
According to BYD technicians, the blade battery is made of a "blade"-like slender shape. The length can be customized according to the size of the battery pack, and the longest can be more than 2 meters. The blade battery can directly skip the "module" level during assembly and directly form a battery pack, which increases space utilization by 50%. The BYD Han EV with blade battery has a cruising range of 605 kilometers and an acceleration of 3.9 seconds to 100 kilometers.
The blade battery is regarded as the "return" of the lithium iron phosphate battery route, and Wang Chuanfu even called it the "correction" of the power lithium battery route.
On April 7 this year, Wang Chuanfu said at BYD's new car launch conference: "From today, BYD's pure electric models begin to fully switch blade batteries. Also from today, BYD's pure electric models will fully use acupuncture experiments as a company. standard."
Balance efficiency and safety
"Battery technology must take into account the safety of products and the tolerance of social resources. Without safety, the popularization of new energy vehicles will be impossible." Wang Chuanfu said.
In recent years, in order to increase the cruising range and improve the energy density of power lithium batteries, high-nickel ternary lithium batteries are favored. The ratio of nickel, cobalt and manganese in the positive electrode material is constantly adjusted. From the early "5:2:3" to "6:2:2" to "8:1:1", the proportion of nickel with strong chemical activity Continuous improvement, but the new phenomenon of thermal runaway of power lithium batteries has also attracted social attention.
"Power lithium batteries one-sided pursuit of high energy density, on the surface, eliminates mileage anxiety, but many technologies have not been fully verified before marketization." said Liang Rui, vice president of Xinwangda Electronics Co., Ltd.
From January 1, 2021, three mandatory national standards, "Safety Requirements for Electric Vehicles", "Safety Requirements for Electric Passenger Cars" and "Safety Requirements for Power Batteries for Electric Vehicles", will be officially implemented. The "Three Strong Standards" are the first mandatory national standards in the field of electric vehicles in my country.
It is worth noting that the "Safety Requirements for Power Batteries for Electric Vehicles" has added a thermal diffusion test of the battery system, which requires that after the thermal runaway of the battery cell occurs, the battery system will not catch fire or explode within 5 minutes, so as to reserve safe escape time for the occupants. .
"After a traffic accident, drivers and passengers sometimes lose consciousness or have difficulty escaping due to structural deformation of the vehicle, so we appeal that the standard of no fire and no explosion within 5 minutes should be extended to half an hour." BYD Passenger Car Li Yunfei, general manager of the car brand and public relations department, said.
Over the years, BYD has always adhered to the lithium iron phosphate route in the field of power lithium batteries. Although some major models have also been equipped with ternary lithium batteries, this car company started with batteries, and finally changed the shape of the lithium iron phosphate power lithium battery by changing the object shape. , so that this seemingly "traditional" technical route can be reborn, achieving long battery life, high stability and high safety, and equipping all BYD models.(Lithium - Ion Battery Equipment)
Stick to the lithium iron phosphate route
Lithium iron phosphate power lithium batteries have been criticized for low energy density and short cruising range. In recent years, the market share has once given way to ternary lithium batteries. In March 2020, the lithium iron phosphate blade battery was launched and mass-produced.
"BYD has launched two major technologies, blade battery and DMI super hybrid. The blade battery is used to solve safe power, and the DMI super hybrid is used to solve the replacement of fuel vehicles." Wang Chuanfu said.
According to BYD technicians, the blade battery is made of a "blade"-like slender shape. The length can be customized according to the size of the battery pack, and the longest can be more than 2 meters. The blade battery can directly skip the "module" level during assembly and directly form a battery pack, which increases space utilization by 50%. The BYD Han EV with blade battery has a cruising range of 605 kilometers and an acceleration of 3.9 seconds to 100 kilometers.
The blade battery is regarded as the "return" of the lithium iron phosphate battery route, and Wang Chuanfu even called it the "correction" of the power lithium battery route.
On April 7 this year, Wang Chuanfu said at BYD's new car launch conference: "From today, BYD's pure electric models begin to fully switch blade batteries. Also from today, BYD's pure electric models will fully use acupuncture experiments as a company. standard."
Balance efficiency and safety
"Battery technology must take into account the safety of products and the tolerance of social resources. Without safety, the popularization of new energy vehicles will be impossible." Wang Chuanfu said.
In recent years, in order to increase the cruising range and improve the energy density of power lithium batteries, high-nickel ternary lithium batteries are favored. The ratio of nickel, cobalt and manganese in the positive electrode material is constantly adjusted. From the early "5:2:3" to "6:2:2" to "8:1:1", the proportion of nickel with strong chemical activity Continuous improvement, but the new phenomenon of thermal runaway of power lithium batteries has also attracted social attention.
"Power lithium batteries one-sided pursuit of high energy density, on the surface, eliminates mileage anxiety, but many technologies have not been fully verified before marketization." said Liang Rui, vice president of Xinwangda Electronics Co., Ltd.
From January 1, 2021, three mandatory national standards, "Safety Requirements for Electric Vehicles", "Safety Requirements for Electric Passenger Cars" and "Safety Requirements for Power Batteries for Electric Vehicles", will be officially implemented. The "Three Strong Standards" are the first mandatory national standards in the field of electric vehicles in my country.
It is worth noting that the "Safety Requirements for Power Batteries for Electric Vehicles" has added a thermal diffusion test of the battery system, which requires that after the thermal runaway of the battery cell occurs, the battery system will not catch fire or explode within 5 minutes, so as to reserve safe escape time for the occupants. .
"After a traffic accident, drivers and passengers sometimes lose consciousness or have difficulty escaping due to structural deformation of the vehicle, so we appeal that the standard of no fire and no explosion within 5 minutes should be extended to half an hour." BYD Passenger Car Li Yunfei, general manager of the car brand and public relations department, said.
