How to deal with the decayed lithium-ion battery?

After prolonged use, it is normal for the performance of lithium-ion batteries for electric vehicles to degrade to a certain extent. At present, the state stipulates that during the warranty period, the performance of the battery shall not be degraded by more than 20%, otherwise, the manufacturer will replace it for free. Once the battery is attenuated, immediately check whether it is within the warranty period and measure whether the attenuation value is within the normal range. If the attenuation exceeds 20% within the scope of the warranty, you can apply to the lithium-ion battery manufacturer to replace the battery for free, which is regulated by the state. If it does not exceed 20% during the warranty period, it is normal. If the vehicle has exceeded the warranty period, the lithium-ion battery attenuation is not serious, and the impact on use is not significant, so try not to replace the battery if you can continue to use it. After all, the battery is expensive. In addition, when choosing, try to buy a large-brand vehicle with a longer warranty period, which is more secure, and if there is a problem, it will provide better service, and there will be a lot of trouble. The attenuation of power lithium batteries is related to various factors such as vehicle design, battery management system, driving habits and charging methods, so it is not easy to judge the degree of battery attenuation. At present, the country has formulated a grand plan for the development and promotion of electric vehicles, but there is no clear policy regarding the issue of battery recycling for electric vehicles. Because there are all kinds of trams on the market, from different car companies. Therefore, every car owner will encounter a different degree of battery degradation. At present, battery attenuation is mainly divided into two types: one is normal attenuation and the other is abnormal attenuation. The normal attenuation is determined by the country during the warranty period. If the battery attenuation exceeds 20%, the manufacturer can be required to replace it for free. However, this 20% is somewhat ambiguous. Because there is no third-party organization for personal battery testing in the market, car owners still have to rely on manufacturers for testing, and the testing standards of each manufacturer are different. What will happen to the non-normal attenuation? The first is that the charging power is reduced or the cruising range is significantly shortened under the same power. For example, the normal mileage was 400 kilometers before, and now it can only travel 200 kilometers. It used to be charged with 25 kWh, but now it can only be charged with 15 kWh. The second is the addition of charging time. Due to the degradation of battery performance, the charging time will also become longer. For example, it only took half an hour for us to rush from 20% to 80%, but now it takes one hour. Finally, we cannot charge the battery to 100%, and it stops automatically every time when charging 80%, and the battery drops very quickly and is not durable. These are abnormal attenuation phenomena. At this time, the battery needs to be tested by software. If the battery pack cells are found to have inconsistent voltages and different resistances, the manufacturer will directly replace them for free. What if it does not belong? It is necessary to balance the battery to achieve the purpose of correcting the battery life. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.