3.7V Lithium Polymer Battery

　　Advantages of 3.7V Lithium Polymer Battery

　　1. The working standard voltage of a single rechargeable battery is much higher than that of nickel-metal hydride rechargeable batteries and nickel-cadmium rechargeable batteries. The capacitor density is high, and the relative density of the capacitor is twice or more than that of nickel-metal hydride rechargeable batteries or nickel-cadmium rechargeable batteries. Its own charge and discharge is small, and its consumption is also small when it is left for a long time. Its normal service life is long, and the cycle life can exceed 500 times.

　　2. No memory. There is no need to drain the remaining power before charging the battery, which is convenient to use. The structure type of polymer lithium battery with good safety factor adopts plastic soft packaging, which is different from the liquid lithium battery with plastic shell. Once a safety risk occurs, the liquid lithium battery is very easy to explode, while the polymer battery only has an air drum at most. With a thin layer, you can make it even thinner, and you can also put the rechargeable battery in the overdraft card. Ordinary liquid lithium batteries use a method of customizing the cover first, and then inserting the positive electrode material of the battery. The thickness ensures that there are technical shortcomings as follows. Polymer batteries do not have this problem, and the thickness can be below millimeters, which is in line with the current situation. Requested location on mobile phone.

　　3. Rechargeable batteries that use lightweight polymer lithium battery electrolyte do not use plastic shells as protective casings. Compared with aluminum-cased lithium batteries of the same volume and specifications, polymer lithium batteries are 40% lighter and 20% lighter than aluminum-cased rechargeable batteries. Compared with aluminum-shell rechargeable batteries of similar specifications, large-capacity polymer lithium batteries are 10~15% higher than aluminum-shell rechargeable batteries of the same specifications, and 5~10% higher than aluminum-shell rechargeable batteries. They are suitable for color screen mobile phones and The first choice for MMS phones, most of the color screen phones currently on the market use polymer batteries.

　　4. The internal resistance of polymer batteries is smaller than that of ordinary liquid lithium batteries. At present, the internal resistance of domestic polymer batteries even reaches less than 35 meters, which greatly reduces battery consumption and increases the battery life of mobile phones. , fully capable of connecting with the international community. Polymer lithium batteries are suitable for high-current charging and discharging. They are an ideal choice for remote operation and are the most likely product to replace nickel-metal hydride rechargeable batteries.

　　5. Manufacturers can produce products of different specifications according to customer requirements without being limited to standard sizes. The thickness of the lithium battery can be increased or reduced according to customer satisfaction, and new lithium batteries can be developed and designed with high quality and low price, and short mold release cycle. Some can even be customized according to the shape of the mobile phone to fully utilize the space of the battery casing. Boost battery power.

　　6. Polymer lithium batteries with good charging and discharging characteristics use colloidal electrolyte solutions. Compared with liquid electrolyte solutions, colloidal electrolyte solutions have good charging and discharging characteristics and a high charging and discharging service platform. Due to the use of polymer materials, lithium batteries are less likely to catch fire and explode, and the lithium batteries themselves are sufficiently safe. Therefore, the maintenance line design of polymer lithium batteries can be made more convenient by omitting PTC and PTC fuses. simple. Disadvantages of lithium batteries:

　　1. There are safety risks in lithium primary battery reactions and there is a risk of explosion.

　　2. Lithium cobalt oxide batteries cannot be charged or discharged at large currents. Lithium batteries with weak safety factors require circuit protection devices to prevent excessive charging and discharging of rechargeable batteries.

　　3. The production and manufacturing standards are high and the cost is increased.

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