What is the difference between pouch cell and hard-pack batteries (cylindrical, square)?
1. Packaging structure: The packaging of pouch cell uses aluminum-plastic film packaging, while hard-pack batteries use steel or aluminum shell packaging structure;
2. Battery weight: Thanks to the packaging structure of pouch cell , pouch cell are lighter than hard-pack batteries of the same capacity;
3. Battery shape: The shape of hard-pack batteries is round and square, while the shape of pouch cell can be designed according to actual needs, with higher flexibility in shape;
4. Safety: Compared with hard-pack batteries, pouch cell have better exhaust performance. In extreme cases, pouch cell will only bulge or crack at most, and there will be no risk of explosion like hard-pack batteries.
软包电池和硬包电池（圆柱、方形）的区别是什么？
1、封装结构：软包电池的封装用的是铝塑薄膜包装，而硬包电池使用的则是钢壳或者铝壳的封装结构；
2、电池重量：得益于软包电池的封装结构，与同等容量的硬包电池相比，软包电池的重量要更轻；
3、电池形状：硬包电池的形状为圆形和方形，而软包电池的形状则可以根据实际需求来设计，在形状方面有更高的灵活性；
4、安全性：与硬包电池相比，软包电池的排气性能更好，在极端情况下，软包电池最多只会鼓包或者裂开，并不会像硬包电池那样会有爆炸的风险。
