What are lithium battery cells and polymer battery cells?

What are lithium battery cells and polymer battery cells?

Generally, lithium battery generally includes two parts: lithium battery cell+control chip. The lithium battery cell is the carrier for storing electricity, and the control chip is an important part for charging and discharging lithium batteries. Lithium battery cells are divided into aluminum shell battery cells, soft package battery cells (also known as "polymer battery cells") and cylindrical battery cells. Generally, the cell of mobile phone battery is aluminum shell cell, and most digital products such as Bluetooth use soft package cell, while the cell of notebook computer uses series parallel combination of cylindrical cell.

The difference between polymer battery cells and traditional lithium ion batteries lies in the production process. Lithium battery is wound and soft. The polymer is superposed and has a hard body. With the same volume of polymer and lithium battery, the capacity of polymer is larger, about 30% higher. It is safer and has less explosion risk.

Lithium battery cell

The advantage of lithium battery cell is that the discharge power is large. Under the same voltage, the limiting current is greater than that of polymer battery cell. That is to say, the lithium battery cell has good output performance and high power. It can be used in some devices that need instantaneous high current to ensure the stability of the system.

The advantages of polymer battery cell lie in its strong endurance and large capacity. The capacity of polymer battery cell with the same volume is 20% larger than that of lithium battery cell. Strong endurance under stable current output. Moreover, its surface is a flexible material as the outer box. If the battery swells due to short circuit, it will not explode, but will only crack, so it is safe.