Power battery applications in all walks of life, with the development of the lithium battery industry, higher energy density, smaller size of lithium batteries gradually replace the original NiMH and lead-acid and manganese-acid batteries, so what types of lithium batteries currently exist on the market? What are their characteristics.
At present, the power battery is divided into two types of soft and hard pack, hard pack subdivided into: cylindrical, square. In terms of structure, different package structures have a bit of self, different package structure is also a way to meet the different needs of the market evolution.
(1) cylindrical lithium battery features.
①Mature production process of cylindrical lithium battery, high degree of automatic production, lower PACK cost.
②Many models. 18650, 21700, 26500, etc.
(③) a variety of cylindrical battery form, suitable for the full layout of electric vehicle space design.
④ cylindrical battery pack with large heat dissipation area, generally using steel or aluminum shell package relatively low specific energy.
(2) square lithium battery cell characteristics.
Aluminum-cased square and cylindrical type is also generally aluminum-cased, the protection of the cell is better than aluminum-plastic film battery (i.e., soft pack battery), the cell safety has also improved compared to cylindrical batteries; however, the consistency of the guarantee is more difficult, too many models, the process is difficult to unify, suitable for customized production, not convenient for automated production of battery packs.
(3) Soft pack lithium battery cell characteristics.
Soft pack battery is another name for polymer batteries, compared with cylindrical batteries, has a variety of advantages such as small size, light weight, high specific energy, high safety, design flexibility.
① soft pack battery weight is 40% lighter than the same capacity of steel-cased lithium batteries, 20% lighter than aluminum-cased batteries.
②High capacity. The capacity of soft pack battery is 10-15% higher than that of steel-case battery of the same size, and 5-10% higher than that of aluminum-case battery.
③Small internal resistance. The internal resistance of soft pack battery is smaller than that of lithium battery, and the minimum internal resistance of domestic soft pack battery cells can be less than 35mΩ, which greatly reduces the self-consumption of the battery.
④Flexible design. The shape of the soft pack battery can be customized according to the customer's needs, and new cell models can be developed.
Different fields have different requirements for lithium batteries, square, round and soft pack lithium batteries are different types derived from the different needs of the industry, and each has different advantages and areas of application.
Welcome to visit our company website: www.manlybattery.com. If you have any interests in batteries, please feel free to contact us: info@manlybattery.com
