Comparison of Technical Characteristics of Soft Pack Battery and Cylindrical Battery

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2019-12-30

Soft pack batteries and cylindrical batteries are widely used, so why are both popular and favored by the public? Next, by the small series to introduce the comparative analysis of the technical characteristics of soft pack batteries and cylindrical batteries.

Comparative analysis of technical characteristics

1. Battery shape: soft-pack batteries can be made thinner, which is not comparable to cylindrical batteries.

2. Rate characteristics: cylindrical lithium battery welding multi-lug process limitations.

3. Discharge platform: the same positive electrode material, negative electrode material and electrolyte are used, so the discharge platform is consistent in theory.

4. Product quality: The cylindrical lithium battery process is very mature, the probability of public secondary slitting defects of pole pieces is low, and the winding process is higher than the lamination process in maturity and automation. The lamination process is still semi-manual, so it has adverse effects on the quality of the battery.

5. Pole welding: Cylindrical lithium battery pole ear is easier to weld than square lithium battery, and square battery is easy to produce virtual welding to affect battery quality.

6.PACK group: the round battery is relatively easier to use, so the PACK scheme is simple and has good heat dissipation effect.

In short, both cylindrical and soft-pack batteries can develop rapidly because they have been well applied in their respective application areas. Domestic power battery manufacturers are predicting that the square will become the mainstream of power batteries, but the cylindrical power battery application manufacturers represented by Tesla are constantly innovating in technology, the energy density of the vehicle battery is constantly improving, and the battery performance is more excellent.