Do you know the important difference between soft pack lithium battery and hard pack lithium battery?

Soft pack lithium battery: The soft pack lithium battery is just the liquid lithium battery covered with a polymer shell. In the structure, the aluminum-plastic film packaging is used, and the soft-packed battery will only be vented and cracked in the event of a safety hazard. Advantages of soft-pack lithium batteries: Compared with hard-pack lithium batteries, it has many advantages such as small size, light weight, high specific energy, high safety, and flexible design. The specific advantages are as follows: ①The safety performance of soft-pack lithium batteries is good , Unlike the steel shell aluminum shell battery cell will explode. ②Light weight, the weight of the soft pack battery is 40% lighter than the steel shell lithium battery of the same capacity, and 20% lighter than the aluminum shell battery. ③Large capacity, the soft pack lithium battery pack is 10-15% higher than the steel shell battery of the same size and 5-10% higher than the aluminum shell battery. ④The internal resistance is small, and the internal resistance of the soft pack battery is smaller than that of the lithium battery. At present, the minimum internal resistance of the domestic soft pack battery core can be less than 35m, which greatly reduces the self-consumption of the battery. ⑤The design is flexible, and the shape of the soft-pack lithium battery pack can be customized according to the needs of customers, and new battery cell models can be developed. Disadvantages of soft-pack lithium batteries: First, the existing soft-pack battery cell types are small and cannot meet market demand; second, the cost of developing new models is high. Hard-pack lithium battery: There is not much analysis on the hard-pack lithium battery on Baidu Encyclopedia. The author will not analyze the hard-pack lithium battery in detail here. Let's take a look at the difference between it and the soft-pack lithium battery. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the internal resistance and measurement methods of 18650 lithium batteries?