Advantages of lithium polymer batteries

Advantages of lithium polymer batteries

Published by Kevan XiaoEdith at2021-05-29

Advantages of lithium polymer batteries

1. Good safety performance

The polymer lithium battery uses aluminum-plastic soft packaging in structure, which is different from the metal shell of the liquid battery. Once a safety hazard occurs, the liquid battery is easy to explode, while the polymer battery will only blow up at best.

2. Small thickness, can be made thinner

Ultra-thin, batteries can be assembled into credit cards. Ordinary liquid lithium batteries adopt the method of customizing the shell first, and then plugging the positive and negative electrodes. The thickness is below 3.6mm, and there is a technical bottleneck. Polymer batteries do not have this problem. The thickness can be below 1mm, which meets the needs of current mobile phones. direction.

3. Lightweight

The battery using polymer electrolyte does not require a metal shell as a protective outer packaging. The weight of a polymer battery is 40% lighter than a steel shell lithium battery of the same capacity and 20% lighter than an aluminum shell battery.

4. Large capacity

Polymer batteries have a capacity of 10-15% higher than steel shell batteries of the same size and 5-10% higher than aluminum shell batteries. They have become the first choice for color screen mobile phones and MMS mobile phones. Nowadays, most of the new color screen and MMS mobile phones on the market are also used Polymer batteries.

5. Small internal resistance

The internal resistance of polymer batteries is smaller than that of ordinary liquid batteries. At present, the internal resistance of domestic polymer batteries can even be below 35mΩ, which greatly reduces the self-consumption of the battery and prolongs the standby time of the mobile phone. Level in line with international standards. This kind of polymer lithium battery that supports large discharge current is an ideal choice for remote control models, and it has become the most promising product to replace nickel-hydrogen batteries.

6. The shape can be customized

The manufacturer is not limited to the standard shape, it can be economically made into a suitable size. The polymer battery can increase or decrease the thickness of the battery cell according to the needs of customers, and develop new battery cell models, which are cheap and short in the mold opening cycle. Some can even be tailored to the shape of the mobile phone to make full use of the battery shell space and improve the battery. capacity.

7. Good discharge characteristics

Polymer batteries use gel electrolytes, which have stable discharge characteristics and a higher discharge platform than liquid electrolytes.

8. The design of the protection board is simple

Due to the use of polymer materials, the battery core does not fire or explode, and the battery itself has sufficient safety. Therefore, the protection circuit design of the polymer battery can be considered to omit the PTC and fuse, thereby saving battery costs.

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