The characteristics and advantages of BYD pouch battery mainly include the following aspects :
Package structure : BYD pouch batteries are packaged in aluminum-plastic film, while hard-pack batteries are packaged in steel or aluminum shell. This packaging structure makes BYD pouch battery weight advantage, compared to the same capacity of the hard-pack battery lighter .
Weight and volume : Due to differences in package structure, pouch batteries are lighter in weight and smaller in size, which makes them more suitable for portable devices 1.
Shape flexibility : The shape of the soft pack battery can be designed according to actual needs, with higher flexibility. In contrast, hard-pack batteries are more fixed in shape, usually round or square 1.
Safety : BYD pouch batteries will only bulge or crack at most in extreme cases, and will not be as risky as hard-pack batteries. This exhaust performance makes BYD pouch batteries perform better in terms of safety 1.
Energy density and electrochemical performance : BYD pouch battery has high energy density, good electrochemical performance, flexible design and high safety .
Production efficiency and cost : Although the design flexibility and safety of the BYD pouch battery is high, its product consistency requirements are higher, the group efficiency is relatively low, and the cost is relatively high .
BYD’s application and development trend in pouch battery technology :
Byd began using soft-coated lithium iron phosphate battery modules in its DMI models, which are essentially cells with secondary sealing technology and are encapsulated in aluminum-plastic films. Byd’s soft-pack batteries are designed to meet the needs of different capacities and sizes, such as 26Ah, 40Ah, 42Ah, 47.7Ah, 65.2Ah and 85.2Ah 3. In addition, BYD is constantly optimizing its battery technology, such as the use of refrigerant direct cooling technology and pulse self-heating technology, to improve the battery’s heat dissipation and heating efficiency .
Conclusion：
BYD’s puoch batteries have significant advantages in package structure, weight, volume, shape flexibility, safety, energy density and electrochemical performance, but there are also certain challenges in terms of production efficiency and cost. As the technology continues to advance, BYD will continue to optimize its pouch battery technology to meet the needs of a wider range of applications.
