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Electric vehicle battery life has 2 kinds, the first is the calendar life, the second is the cycle of charge and discharge times life, want the battery to be more durable, these 2 lifes need a certain maintenance, so that they maximize the time, reasonable maintenance of the battery, you can also avoid battery life will not decline rapidly, for the owner, is a "hundred benefits and no harm" thing, and the maintenance of the battery, the most important is the specification of charging, many people are asking, electric vehicles "daily charging" and "use up recharge", which will not hurt the battery? Which is more correct, the little connoisseur will tell you the answer, so that you can "not get lost" in the maintenance of the battery.
Electric vehicles "use up and recharge", will make the battery "over-discharge"
Calendar life refers to the battery in normal use, battery quality determines the normal use of the battery life, the general lead-acid battery is about 3 years, battery quality is different, the time is also different, and the factors that shorten the battery calendar life are mainly three reasons: overcharge, overheating, and over-discharge.
Overcharge will make the battery active substance fall off, overheating will cause the battery bulge, over-discharge will cause the battery to vulcanize, these are irreversible, once the situation occurs, the calendar life of the battery will be shortened, and connected to the decline in battery capacity, resulting in weak endurance.
The main reason for the "over-discharge" is from "using up and recharging", however, this "use-up" means: even the protective voltage of the battery will be used up, under normal circumstances, this will not happen, but if the owner uses the ACS button, controller conversion and other means, it will make the battery have no residual power, at this time, the battery belongs to the "over-discharge".
When charging electric vehicles, the battery should retain 20%-30% of the power
In order to avoid the "over-discharge" of the battery, when the electric vehicle is charged, it should be maintained at 20%-30% of the residual electricity, and the summer charging should try to keep the residual electricity at about 20%, and in the winter, considering the factor that the charging efficiency of the electric vehicle is relatively slow and the electric vehicle loses power relatively fast, try to maintain about 30% of the residual electricity.
The reason why to retain a little residual electricity, or the reason is that the battery in the lower the power, the active substance of the battery will occur plate "sulfation", and this damage is irreversible, it will make the battery life decline, battery life shortened, and all electronic products in life, in addition to the use of nickel-cadmium batteries, other electronic products should retain a certain amount of residual electricity, and then charge, is conducive to prolonging the battery life.
Electric vehicles are "charged every day" to reduce the number of cycle charging
In addition to "running out and recharging", there are some car owners who are accustomed to "charging every day", no matter how much battery remains, charge the electric vehicle, but this charging method will actually damage the number of cycle charge and discharge of the battery, which is also an important factor that determines the length of battery life.
The ordinary battery equipped with electric vehicles, the number of cycle charging and discharging is limited, generally only about 300 times, and if it is charged every day, there are 365 days a year, then, the battery should be replaced once in 1 year, which is normal, and if it is charged once in 3 days, he can keep the same as the calendar life, and use it for about 3 years.
Therefore, electric vehicle "daily charging" is an undesirable way of charging, of course, some car owners are facing, today does not charge, tomorrow may have to push home situation, for this kind of travel, indicating that the choice of electric vehicles and their own car demand mismatch, should be to change the capacity of the battery, rather than with a shortened battery charging method, otherwise often replace the battery, not only spend more money, but also waste time, it is not worth the loss.
Lithium batteries for electric vehicles, it is recommended to "use and charge"
And "daily charging" is actually not a good choice for all batteries, here small connoisseurs to focus on the charging method of lithium batteries, lithium battery charging, not only "daily charging", but also "with the charge".
Lithium batteries and lead-acid batteries have great differences in the number of cycle charge and discharge, its number of low times is 1200 times, more than 2000 times, which means that even if it is charged once a day, it is also used for about 4-5 years, and the calendar life of lithium batteries is about 5 years, so "daily charging" will not have other effects on lithium batteries.
Moreover, "with charge" also has an advantage, it will make the battery after the discharge, quickly get the power of the supplement, to avoid the battery lead plate and other parts of the vulcanization reaction, such a practice, to a certain extent can also affect the calendar life of the battery, therefore, if your electric vehicle is a lithium battery, do not consider whether it is "daily charging" or "use up and recharge", can be "charged with the use".
"Daily charging" hurts the battery more than "recharging when used up"
Finally, let's talk about these 2 ways of charging, which one will hurt the battery more, as can be seen from the small title, my answer is "daily charging", the reason why it will be this answer, because the way of "daily charging" is actually to directly reduce the number of charge and discharge, so that the life expectancy will inevitably be reduced.
And "used up and recharge" is different, as long as the battery does not cause "loss of power", then, the damage it causes is limited, and according to my understanding, most car owners, will not do the battery dashboard has run out of power, but also take ACS or controller to borrow electricity, to protect the voltage of the residual power to release, and if only occasionally use this way, the battery will not be so "delicate", the damage is also limited.
What hurts the battery even more than "daily charging" is that the charger is mixed
Some car owners asked in a private message, electric vehicle charging is very harmful to the battery, is the degree of damage of "daily charging" will be the greatest, in fact, not, if the mixed use of chargers, resulting in charger and battery voltage mismatch, small connoisseurs feel that its damage is greater.
For example, the electric car is 48V12AH, and the owner uses 60V20AH or other mismatched charger to charge, it will bring 2 major damage.
First, such a charge, will be because the charger in the constant voltage stage charging, the current is too large, resulting in rapid battery occurrence, resulting in battery bulge, this damage is irreversible.
Second, the use of mismatched charger, will cause the surge inflow current is too large, this time is likely to appear charger plugged in, will smoke burn out the battery, many car owners because of this operation, directly scrapped the battery.
Summary: "daily charging" and "use up recharging" will not hurt the battery, it is related to many factors, first of all, the battery classification, if the battery is a lithium battery, then, "daily charging" will be more correct, and if it is a lead-acid battery, "use up and recharge" will be more correct, of course, but also consider the actual demand for the car, to decide how to charge in the end, the above charging methods, are conducive to maintaining the battery, if the owner can do, for the battery cycle charging times life, The extension of the calendar life will have certain benefits.
I hope that the above content can help you, and welcome to forward, collect, pay attention to electric vehicle connoisseurs, and share electric vehicle-related information, knowledge and views every day.