How long does the battery life of an electric car take?

In terms of normal chemical performance, the service life of various electric vehicle batteries is as follows: (1) Lead-acid battery life The service life of lead-acid batteries is about 300 cycles in electric vehicles, so lead-acid batteries are used. A battery car with a battery not only feels that the car is heavier, but it is also easy to feel that the electric car uses fast electricity, and the power is easy to feel soft and weak. It is often about 11 months to change the battery, especially in winter. Do not disable. It should be said that the lead-acid battery is the battery with the shortest service life as an electric vehicle battery, and of course the price is the cheapest. (2) The life of Ni-MH battery The life of Ni-MH battery is calculated from the moment it is manufactured. Even if it is not used, it will be discharged at a rate of 0.2%-0.3% every day, and after a period of storage, even if Without recycling, a small part of its capacity will be permanently lost, and its life will also be attenuated. Therefore, the storage of Ni-MH batteries should not exceed 1 year. So how long is the service life of Ni-MH batteries? Regardless of whether it is a rechargeable battery such as a lithium-ion battery, a lead-acid battery or a nickel-metal hydride battery, the battery life that is conventionally seen is not measured in units of time, but in accordance with certain operating conditions. In terms of the number of battery charge and discharge cycles, that is to say, if the battery is used for 100 cycles under the same conditions of use, the life of a frequently used battery must be short in terms of time units. In terms of normal use, the life of a Ni-MH battery can theoretically be selected for 500 times. Of course, if it is used at low current and light load, it can reach a cycle life of about 800 times. (3) The life of lithium iron phosphate batteries as electric vehicle batteries. Currently, the lithium iron phosphate batteries on the market are marked with a cycle life of about 2000 times. This refers to the ideal number for stable normal low-current charge and discharge and normal temperature applications, but In fact, under different usage conditions, the real life cycles of lithium iron phosphate batteries are different. This is important to talk about the service life of several different applications. 1) The use of low-current charging and discharging is basically used in 3C electronic products, which can basically reach more than 2000 cycles; 2) The application of high-rate stable discharge, because most of them run under high load conditions, speed up Due to the decay time of the battery material, the cycle life is drastically reduced. A battery of poor quality may have about 500 cycles, and a good one is about 800 cycles. 3) High-rate unstable charging and discharging use, high-temperature plus discharging rate unstable operation, greater damage to the battery, and lower cycle life. After testing several battery manufacturers’ cells, it is found that the battery is basically used after 250 to 300 times. Not anymore. (4) The lifespan of polymer lithium-ion batteries for electric vehicle batteries. Since polymer lithium-ion batteries are generally relatively expensive, they are basically not used in electric vehicles. Except for some customized applications of electric vehicles, polymer lithium-ion batteries The service life of a battery made of lithium-ion batteries is basically 300 to 500 cycles. In summary, the batteries currently used in electric vehicle batteries are mainly nickel-metal hydride batteries and lithium iron phosphate batteries. Lead-acid batteries are slowly being replaced because of their serious environmental pollution. So you can basically know the life of the electric vehicle battery. If it is a nickel-hydrogen battery, the cycle life is more than 500 times; if it is a lithium iron phosphate battery, it is more than 800 times. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.