Explanation of the performance characteristics of polymer lithium batteries

Advantages of polymer lithium-ion batteries 1. The operating voltage of a single battery can reach 3.6v~3.8v, which is much higher than the 1.2v voltage of nickel-hydrogen batteries and nickel-cadmium batteries. 2. The capacity density is large, and its capacity density is 1.5 to 2.5 times or higher than that of a nickel-hydrogen battery or a nickel-cadmium battery. 3. The self-discharge is small, the storage time is long and the capacity loss is small. 4. Long service life, its cycle life can reach more than 500 times in normal use. 5. No memory effect, no need to empty the remaining battery before charging, easy to use. 6. Good safety performance Polymer lithium-ion battery adopts aluminum-plastic soft packaging in structure, which is different from liquid battery with metal shell. Once there is a safety hazard, liquid battery is easy to explode, while polymer battery will only swell. 7. Small thickness, can be made thinner. Such a thin battery can be assembled into a credit card. Ordinary liquid lithium-ion batteries adopt the method of customizing the shell first, and then inserting the positive and negative materials. When the thickness is less than 3.6mm, there is a technical bottleneck, but polymer batteries do not have this problem. The thickness can be less than 1mm, which is in line with the current demand for mobile phones. 8. Lightweight polymer electrolyte batteries do not require metal casing as a protective layer. Polymer batteries are 40% lighter than steel lithium-ion batteries of the same capacity and 20% lighter than aluminum batteries. 9. Large-capacity polymer batteries are 10-15% higher than steel batteries of the same size and specifications, and 5-10% higher than aluminum batteries. It has become the first choice for color screen mobile phones and MMS mobile phones. Currently, most new color screen and MMS mobile phones on the market also use polymer batteries. Low internal resistance The internal resistance of polymer batteries is less than that of liquid batteries. At present, the internal resistance of domestic polymer batteries can even be less than 35m, which greatly reduces battery power consumption and prolongs the standby time of mobile phones, which can reach international standards. This polymer lithium-ion battery supports a large discharge current and is an ideal choice for remote control models. It is the most promising alternative to nickel-metal hydride batteries. 11. The shape can be customized. Manufacturers do not limit their own standard shapes and can make them economically suitable sizes. Polymer batteries can add or reduce the thickness of the battery according to the needs of customers, develop new battery models, are inexpensive, and have a short mold cycle. Some can even be customized according to the shape of the mobile phone to make full use of the battery shell space and increase the battery capacity. 12. Good discharge characteristics Polymer batteries use gel electrolyte, which has stable discharge characteristics and a higher discharge platform than liquid electrolytes. 13. The design of the protective plate is simple. Because the polymer material is used, the battery will not catch fire or explode, and the battery itself has sufficient safety. Therefore, the design of the polymer battery protection circuit can consider omitting the PTC and fuse to save the battery cost. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Classification of lithium battery failure and analysis of the reason for failure