EV battery
How long is the life of the gel battery?
by:Vglory
2021-05-01
There are two indicators for the life of a battery. One is the floating charge life, that is, the maximum capacity that the battery can release at standard temperature and continuous floating charge is not less than 80% of the rated capacity. The second is the number of 80% deep cycle charge and discharge times, that is, the number of times a full-capacity German Sunshine battery is fully charged after 80% of the rated capacity is discharged, so that it can be recycled. Usually, engineers and technicians only value the former and ignore the latter. The 80% deep cycle charge and discharge times represent the actual number of times that the battery can be used. In the case of frequent power outages or low quality of the mains, when the actual number of cycles of the battery has exceeded the specified number of charge and discharge cycles, although the actual use time is still The calibrated floating charge life is not reached, but the battery has actually failed. If it cannot be found in time, it will bring a greater potential accident. Therefore, when choosing a battery, we should pay attention to both of the two life indicators. The latter is particularly important when the city power is often interrupted. When choosing UPS to support German sunshine batteries, we should consider sufficient floating life margin. According to relevant experience, the actual service life of a battery is often only 50% to 80% of the nominal floating charge life. This is because the actual floating charge life of the battery is related to many factors such as the meaning of standard temperature, actual ambient temperature, battery charging voltage, use and maintenance. When the actual ambient temperature is 10°C higher than the standard ambient temperature, the battery will double its internal chemical reaction speed and shorten the floating charge life by half. Therefore, the UPS battery room should be equipped with air-conditioning equipment. In terms of meaning temperature value, the European standard is 20°C, and the standard of my country, Japan, and the United States is 25°C. A battery with a floating charge life of 10 years at 20°C, if converted to a standard of 25°C, is only equivalent to a floating charge life of 7 to 8 years. The nominal floating charge life of the supporting battery should be the value obtained by dividing the actual service life of the battery we want by a life coefficient. This life factor is usually determined based on relevant experience. The battery with high reliability can be taken as 0.8, and the battery with low reliability can be taken as 0.5. 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: What is the reason for the decline of lithium-ion battery?
Custom message