For the ever-developing pure electric vehicles, the importance of power batteries is self-evident. According to the cost analysis, at present, the power battery of pure electric vehicles accounts for about 3%~4% of the cost of the whole vehicle, and the technical level of the power battery also affects the endurance performance, thus affecting the convenience of consumers. Among the power battery manufacturers in China, Contemporary Ampere Technology Co., Ltd. and BYD rank higher. Recently, Contemporary Amperex Technology Co., Limited introduced CTP technology, and BYD also introduced blade batteries.
Different from the traditional grouping method of battery pack from monomer to module to battery pack, Contemporary Amperex Technology Co., Limited's CTP technology directly omits the battery module and integrates the battery cells into the battery pack, thus improving the space utilization rate of the battery pack, reducing the weight of the battery pack, improving the energy density and reducing the production cost. BYD's blade battery is designed to flatten the battery cells.
according to BYD's patent, the length of the blade battery can reach 25mm, which is more than 1 times that of the traditional lithium iron phosphate battery, which can improve the composite efficiency of the battery cells, thus improving the energy density of the battery pack. As one of the leaders in the domestic new energy industry, BYD has always insisted on lithium iron phosphate battery, and launched its masterpiece in 22? Blade battery? The volume specific energy density is 5% higher than that of the traditional lithium battery, which has the characteristics of high safety and long service life, and the service life of the whole vehicle can reach more than one million kilometers? .
in contrast, since 217, Contemporary Amperex Technology Co., Limited has gradually surpassed BYD with the price advantage of ternary lithium battery. Recently, at the 222 China Electric Vehicle committee of 1 Forum, Contemporary Amperex Technology Co., Limited introduced the third generation CTP technology through continuous technical iteration, which is internally called? Kirin battery? And said that the energy density of this battery in various indicators will lead the industry to the highest level.
Kirin battery and BYD battery were compared and analyzed from the aspects of design idea, implementation process, production efficiency, battery volume energy density, battery mass energy density, number of battery structural parts and cost. Simply put, the similarity between them is that they both change the physical structure of the battery system and reduce or omit modules. But Contemporary Amperex Technology Co., Limited didn't change the shape of the battery. Blade battery? But it changed the size of the battery.