For the ever-developing pure electric vehicle, the importance of power battery is self-evident. According to the cost analysis, at present, the power battery carried by pure electric vehicles accounts for about 30%~40% 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 Ampere Technology Co., Ltd. introduced CTP technology, and BYD also introduced blade batteries. So which is better, contemporary Amperex Technology Co., Ltd., limited CTP or BYD blade battery?

What is CTP technology and blade battery? What are their advantages?

Different from the traditional grouping method of battery pack from monomer to module to battery pack, CTP technology of contemporary Amp Technology Co., Ltd. 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 adopts flat design of battery core. According to BYD's patent, the longest blade battery can reach 2500mm, which is more than 10 times of the traditional lithium iron phosphate battery, which can improve the composite efficiency of the battery cells and the energy density of the battery pack.

Therefore, it is not difficult to see that both CTP technology and blade battery can improve the energy density of the battery and reduce the production cost to a certain extent. BYD's blade battery not only reduces the production cost, improves the energy density, but also increases the stability. In addition, the current blade battery is an upgraded version of the common lithium iron phosphate battery, and its stability is higher than that of the common ternary lithium battery.

Which is better, CTP technology or blade battery?

In fact, from the advantages of the two, they are both improved in technology compared with the common lithium batteries used now, but they are all structural changes and do not involve material innovation. Therefore, although the competitiveness of the battery can be improved in the short term, it has little effect on alleviating the mileage anxiety of pure electric vehicles in the long run.

In addition, compared with contemporary Amperex Technology Co., Ltd., these two technologies use CTP technology to reduce the system cost on the basis of keeping the cost of 102Ah and 150Ah batteries unchanged, and fully participate in the design process of the whole battery pack, while BYD's blade battery is independently designed and developed, with perfect intellectual property rights and relatively more technological innovations. Moreover, in theory, blade batteries are not only suitable for lithium iron phosphate batteries, but also for ternary lithium batteries.

Summary: So CTP technology and blade battery have their own advantages and disadvantages. But on the whole, the blade battery is mainly lithium iron phosphate battery with high stability, and CTP technology needs to be evaluated.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.