2019/7/11 How long will the batteries of new energy vehicles last?
2019-05-23
First of all, it needs to be clear that the service life of new energy vehicle power batteries is not generally measured by time, but by the number of cycles. Since it's a cycle, there must be different starting points and charging stops. If it is a deep charge, that is, a 0-100% cycle, then an experimental data will be obtained. Generally speaking, lithium iron phosphate batteries can be recycled about 2,000 times, while current ternary lithium batteries can generally be recycled about 1,400 times.
Of course, the cycle life of batteries is also directly related to the temperature of batteries. The cycle times of batteries at 35 degrees are significantly higher than those at 55 degrees.
At the same time, different discharging depths also have a great impact on the cycle life of batteries when charging in different cycles. In the 0%-50% cycle mode, the battery life can be more than 3000 cycles, while in the deep cycle mode, only after less than 900 cycles, the battery life can be reduced to less than 50%.
It should be noted that the national law stipulates that when the capacity of batteries decreases below 80%, they must be recycled compulsorily and need to be reused step by step.
Of course, in the case of deep charging and discharging, the running range will be longer, but the decay of the battery will be faster. At the same time, the usual car use habits also have a great impact on the service life of power batteries.
1. Don't always charge fast, combine fast and slow charge;
2. Don't always let the power battery discharge at high current: avoid frequent rapid acceleration and braking, etc.
3. When not in use for a long time, it needs to be charged regularly to avoid deep feeding.
4. Avoid charging and discharging in extremely cold weather.
5. Regular physical examination of power batteries can be done once a year. Maintenance and maintenance can be carried out in regular 4S stores.
Avoid deep charging and discharging. Pay attention to the maintenance of power batteries at ordinary times. It's better to charge as needed to maximize the life of power batteries.
Issued by Tom, M&S, Jul. 11, 2019.
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