What is the difference between a power-type lithium-ion battery and an ordinary lithium-ion battery?

The biggest difference between a power lithium-ion battery and an ordinary battery is the large discharge power and high energy. Since power lithium batteries are mainly used for the energy supply of automobiles, they have higher discharge power than ordinary batteries. 2. The difference in appearance. Power lithium battery: The electrode type and thickness of the battery, the separator is also very thick, can withstand the discharge rate of 12c-50c, but the capacity is very small. Ordinary battery: It is a so-called capacity battery. The diaphragm is small and generally cannot withstand a discharge of 2.5C at the maximum. 3. Voltage difference The working voltage of an ordinary power lithium battery is lower than that of an ordinary lithium ion battery. The highest charging voltage of an ordinary lithium-ion battery is 4.2v, while the highest charging voltage of a power lithium-ion battery is about 3.65v. The nominal voltage of an ordinary lithium-ion battery is 3.7v, and the nominal voltage of a power lithium-ion battery is 3.2v. 4. Different attributes Lithium-ion batteries are batteries that power cars, and are usually compared to small batteries that power portable electronic devices. The ordinary lithium ion battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution, while the rechargeable battery is different from the lithium ion battery and the lithium ion polymer battery. At present, there are three important types of mobile power batteries on the market: 18650, polymer and lithium iron phosphate. Lithium polymer batteries are the best choice for consumers, followed by 18650 batteries. Compared with the former two, the lithium iron phosphate battery technology is not yet mature, and the fatal disadvantages of large size and high price make the mobile power unable to scale. This article describes the first two types of batteries. 18650 battery 18650 lithium ion battery refers to a battery with a diameter of 18mm and a length of 65mm. The 18650 battery technology is relatively mature, the battery structure is stable, the specific capacity is high, the overall performance is outstanding, and because of its small size, it can be used in many fields. The disadvantage is that it is safer than lithium polymer batteries, and the battery cycle is lower, only about 300 times. Polymer batteries are different from traditional lithium-ion batteries in terms of production processes. Lithium-ion batteries are made of windings and are flexible. This polymer is superimposed and has a very hard shape. The volume of polymer is the same as that of lithium ion battery, and the capacity of polymer is larger, about 30% higher. It is also safer and has fewer explosions. long lasting. It has been charged and discharged more than 500 times. The disadvantage is the high cost. Polymer batteries of the same capacity are at least 100% more expensive than 18650 lithium-ion batteries. 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: The development history of energy storage lithium-ion batteries and their status in data centers