Battery consistency issues affect all functions

The battery has a consistency problem that affects all functions. Because the power lithium-ion battery is a battery pack composed of multiple single cells in series and parallel, the short-circuit or over-discharge of a single battery will affect the output of all batteries. Therefore, the battery has a barrel effect, and the cycle life and all functions are difficult to reach the theoretical value. As long as the battery functions are highly consistent, the life can be close to the level of a single battery. However, under the existing conditions, due to the complexity of the original information technology is difficult to grasp, the manufacturing process and process control are not good enough, the automation of production equipment is not high enough, and the consistency of the battery appears safe, which affects the use of the battery and the overall life. These three are common problems with lithium batteries, so lithium batteries are like a small public melodrama, allowing the great health of nature to wait. But different lithium batteries are different. Let's take a look at the table: Lithium battery positive PK for electric vehicles: Which is better? As can be seen from the table, the current lithium batteries have obvious shortcomings in some aspects. Lithium cobalt oxide occupies a higher proportion in the field of commercial power lithium-ion batteries due to its higher energy density and smaller battery volume. However, its high price and safety issues of high temperature intolerance have been criticized. Although the lithium iron phosphate cycle is high, the price is relatively low, and the ratio can reach the level of lithium cobalt oxide, but due to its low tap density, relatively large cell size, poor low temperature resistance, and poor battery consistency (income The rate may be lower than the degree of automation, which affects practical ability and cycle life), so small passenger cars are always not well utilized. Lithium cobalt oxide and ternary lithium are still the first choice for small passenger cars and are very sensitive to size and weight. Let's talk about two other things. What does this mean? After reading it, you can think about it for yourself: The center of the lithium battery example has the most international patents. The patent status of the United States, Canada and Japan is as follows: The center of lithium iron phosphate technology is bankrupted by the US patent A123 (A123) It is common to buy in our country), the price and the Canadian Phostech cage broke the skill market; the ternary lithium battery patent closed the international skill market of an American company. Regarding the mileage of electric vehicles, the maximum mileage of electric vehicles sold in the domestic market can be greatly reduced by measuring the maximum mileage of electric vehicles sold in the domestic market at a nominal constant speed of 60km/h. Even the nominal inductance path is measured under NEDC's four-city road spectrum, and the rolling resistance coefficient is adjustable. 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: Who is more environmentally friendly with lithium batteries or fuel power batteries?