How Long do electric car batteries last? How to determine if the battery needs t
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2022/08/31 15:16:59
Battery can be said to be the heart of the electric vehicle, the performance of the battery directly affects the overall state of the electric vehicle, but the battery is a service life. How long will the battery last? "How do I know if the battery needs replacing?" ... Today Xiaobian will share relevant industry knowledge with you.
(a) How long can the battery usually last?
Generally speaking, the battery can normally last 1-2 years. The service life of electric vehicle battery with discharge depth is about 1 year, and the battery life of electric vehicle battery with discharge depth of 50%-70% is about 2 years.
When the use time of electric vehicle battery far exceeds the normal use time, it will seriously affect the normal performance of electric vehicles, do not be forced to not change.
(2) How to determine whether the battery needs to be replaced?
1) The battery fills up on charge and dies on use
Under normal circumstances, it takes about 8 hours to be fully charged. If it suddenly appears, it will be fully charged for one or two hours or even dozens of minutes, and it will not run much distance and run out of power.
It may be caused by the following two reasons: First, a small battery in the battery pack is faulty, and the small battery itself is difficult to repair, so the whole battery can only be scrapped. Second, the capacity of the battery atrophy, the storage function almost lost. At this time, electric vehicle batteries are basically scrapped.
2) After more than three years of use, the performance drops sharply
The capacity of lead-acid battery decay is basically irreversible, more than three years of battery components are basically to deteriorate, and this deterioration has gradually accelerated the trend, will soon completely lose the ability to charge and discharge.
Some electric vehicle users will choose to try to repair the battery of the electric vehicle. If the battery cannot be saved after repair, it means that the battery is scrapped.
3) Charging heat, battery bulging phenomenon
If the battery is charged when the heat is serious, even the shell is very hot, eliminate the battery quality problems, the greatest probability is the end of life. The reason for heating is that the active material on the plate falls off seriously, the internal resistance increases, and the calorific value increases.
At this time, if you open the battery safety valve to check, you will see the electrolyte "black", serious failure cannot be repaired. At this time, the battery self-discharge very fast, sometimes after charging quickly out of power. Serious will make the battery drum, and even the battery case, the line will appear burning, very dangerous.
4) The battery capacity is lower than 60% of the normal capacity
Under normal use, the capacity of the battery will decay normally. Take 48/12 as an example, the new battery will last for 40 kilometers.
Once when the full charge can not run 20 kilometers, that means that the battery components have begun to have problems, various performance greatly decreased, performance is extremely unstable, may cause such as charging heating deformation adverse consequences.
When the battery appears above 4 kinds of circumstances, we must replace the electric vehicle battery in time to avoid short circuit, circuit opening, explosion and other dangers!
(3) What is the reason why electric cars can't go far when they are fully charged?
In addition, as the temperature gradually decreased, many small partners said that their little donkey has been fully charged, but it is slow to speed up, not far. Related professionals say that in addition to the cold weather and other environmental factors, can also be attributed to the following three aspects.
1. Motor problems
The most direct factor affecting the power of a battery car is the motor. If the motor has been aging, there will be demagnetization, and once the motor demagnetization, there will be a weak situation when driving the electric vehicle, the most direct performance is lack of power, run fast and run not far.
If the motor has been demagnetized, the effect of repairing the motor is not big, it is recommended to replace a new motor, and then solve the problem of insufficient power of electric vehicles.
2. Controller problem
Now some electric vehicle controller due to work problems, often there will be inaccurate parameters. The controller as the brain of the electric car, if its parameters are not accurate, it will cause the current instability, the problem of fast when slow, leading to the electric car running fast.
For this problem, only the replacement of a new controller can completely solve the problem of electric vehicle power shortage.
3, tire pressure problem
If there is insufficient tire pressure in the electric vehicle, then in the process of driving, the resistance will increase, and then lead to the electric vehicle running difficult, fast running situation.
This situation is more convenient to solve, that is, to pump up the electric car in time, so that you can solve the problem of electric car power shortage.
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