Advantages and disadvantages of polymer physical batteries
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2020/12/19 14:46:04
Polymer lithium batteries generally refer to polymer lithium ion batteries.A new generation of polymer lithium ion battery in shape can be thin shape is changed (ATL battery can reach 0.5 mm, the thinnest phase in the thickness of the card) and arbitrary shape, arbitrary area, greatly improving the battery design flexibility, which can meet the needs of the product, made into any shape and the capacity of the battery, for the equipment on the power supply solution developers provide some design flexibility and adaptability, in order to maximize the optimization of its product performance.At the same time, the unit energy of polymer lithium ion battery is 20% higher than the current general lithium ion battery, and its capacity, environmental protection performance and other aspects are better than lithium ion battery, some improvements.
Advantages and disadvantages of polymer lithium batteries
Advantages:
1. The working voltage of single battery is up to 3.6V ~ 3.8V, which is much higher than the 1.2V voltage of ni-MH and ni-Cd batteries.
2. High capacity density, which is 1.5~2.5 times or higher than that of ni-MH or ni-Cd batteries.
3. Small self-discharge and small capacity loss after being placed for a long time.
4. Long life, normal use of its cycle life can reach more than 500 times.
5. No memory effect, no need to empty the remaining battery before charging, easy to use.
6. Good safety performance
Polymer lithium battery adopts aluminum plastic flexible packaging in structure, which is different from the metal shell of liquid battery. In case of safety hazard, liquid battery is easy to explode, while polymer battery will only blow up at most.
7. Small thickness makes it thinner
The battery is so thin that it can fit into a credit card.The common liquid lithium battery adopts the method of customizing the shell first and filling the anode and cathode materials later. The thickness is below 3.6mm, which is a technical bottleneck. However, the polymer battery cell does not have this problem, and the thickness can be below 1mm, which is in line with the current demand direction of mobile phones.
Disadvantages:
1. Battery cost is high and electrolyte system purification is difficult.
2. Protective circuit control is needed. Overcharge or overdischarge will damage the reversibility of chemicals in the battery, thus seriously affecting the battery life.
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