Which square cylindrical soft pack battery is safer?

The internal components are not much different. Intuitively, the difference between the three different shapes of lithium-ion batteries is only in the shape. But behind this is the choice between each other in terms of skill development and use, that is to say, the difference lies in the choice of plans at the commercial level, and not so much about the difference in functions and safety. Square hard-shell batteries for square lithium-ion batteries can be customized. Important advantage: arbitrary scale. It is not easy to find alternatives to norms and standards. The long-term use of the battery function declines more obviously. Relative insufficiency: arbitrary scale means standard disorder. This is because the structure of prismatic batteries is relatively simple, and the popularity of prismatic batteries in China is very high. Relative energy density is higher. The prismatic lithium-ion battery can be customized according to the planned scale, but this also leads to the complicated standard of the prismatic battery on the market and the difficulty of unification of the process. As a result, there is a shortage of unified specifications and standards, which is not conducive to reducing the cost of large-scale production. Cylindrical Lithium-ion battery cylindrical cell technology is mature, an important advantage: standardized unit. low cost. The energy density is relatively high and relatively insufficient: the battery cell packaging shell occupies a relatively large proportion. High requirements for heat dissipation planning. The technology is mature, and the cylindrical lithium-ion battery has the longest service life. And the product yield is high, which is very suitable for large-scale production. However, due to its high uniform output voltage, more special maintenance circuits are required. The soft-packed lithium-ion battery is light in weight and has an important advantage: good safety. Shape planning is sensitive. Prone to leakage. Relatively inadequate: The mechanical strength of aluminum-plastic film packaging is not as good as that of hard-shell batteries. The production cost is higher. The biggest difference lies in the flexible packaging material (aluminum-plastic composite film), which is the most critical of soft-packed lithium-ion batteries. The key materials used in soft-pack lithium-ion batteries are not much different from the traditional steel-case and aluminum-case lithium-ion batteries. Light weight, the packaging materials and structure of the soft pack battery have good safety functions. The internal resistance is small, the internal resistance of the soft pack battery is smaller than that of the lithium ion battery, which can greatly reduce the self-consumption of the battery; the cycle function is good, the cycle life of the soft pack battery is longer, and the attenuation of 100 cycles is 4% less than that of the aluminum case 7% is agile in planning, and the shape can be changed to arbitrary shapes. From a trend point of view, the market share of soft pack batteries will continue to increase in the future. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.