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Battery failure is the most headache for electric vehicle owners, after all, the battery is the most expensive part of an electric vehicle, but it just so happens that the battery is the most likely part of the main components, compared to the motor, controller life in about 8 years, the frame, brakes can be used to 10 years, battery maintenance can be used for 3-4 years, maintenance is not good 1-2 years will appear problems, need to replace, therefore, maintenance of the battery is particularly important.
If you want to learn battery maintenance, you must first know where the battery is faulty. There are many car owners who have encountered such a problem: the electric vehicle battery is full as soon as it is charged, and 2 blocks of electricity are dropped as soon as it accelerates, so what is going on? The little connoisseur tells you the right reason below.
The essential reason why a charge is full and an acceleration drops 2 blocks of electricity
Before introducing what is willing to lead to "a charge is full, an acceleration will drop 2 blocks of electricity", let's first understand the essential reason for this situation, in fact, the principle is very simple, that is, "not full" caused, that is, although the electric vehicle dashboard shows 100% power, but in fact, the battery does not have a full capacity.
For example, an electric vehicle is a 48V20AH battery capacity, its theoretical endurance is 50 kilometers, then, we will think that it is full can run 50 kilometers, if calculated according to 5 grids of electricity, it should run 10 kilometers per grid, but 48V20AH full charge should be at 0.96 degrees of electricity, if only 0.5 degrees of electricity is stored, it will be easy to fully charge, and it is easy to lose power.
Explain the essential reasons for this situation, and then look at what situations will lead to the dissatisfaction of the battery charge, resulting in a charge on the full, an acceleration on the drop of 2 blocks of electricity, so that the owner can take the initiative to avoid.
The charging current is "catty", resulting in insufficient charge
Now many electric vehicles charging, because can not go up the stairs to charge, can only be charged in the charging pile of the community, such a way is both safe, and convenient, is worth encouraging and advocating, however, some of the current of the charging pile in the community is actually "cat greasy" existence, there are car owners have done tests, with their own sockets for charging, charging current is about 2.8 amperes.
And find the charging pile charging in the cell, the charging current is only about 2 amps, which is a significant reduction in charging efficiency, which means that if the owner follows the charging time of the instructions, such as charging for 6 hours, it can be fully charged, but if the charging pile in the cell is charged for 6 hours, it belongs to the "under-powered" state, which will cause "an acceleration to drop 2 blocks of electricity".
How to avoid: for the decline in the current leading to the electric vehicle charging dissatisfaction, the direct way is to extend the charging time, when the electric vehicle is full of normal current for 6 hours, and the charging pile is a small current charging, it can be extended to 8 hours, when, so that it will cost more charging costs, which is also the purpose of the charging pile operation company.
Aging of the battery, contact with the connection line, and evaporation of the electrolyte will cause current dissatisfaction
When the electric vehicle is charged, if it is used for 1 year on the battery, there is a situation where "a charge is full, and a acceleration drops 2 blocks of electricity", then it is necessary to consider the reasons for these 3 aspects;
Battery aging: If the battery crystallization and vulcanization are serious, it will affect the battery storage capacity, and the capacity is reduced, it is naturally easier to fully charge, and the power loss will be faster.
Solution: Experienced car owners know that the electric vehicle battery is not composed of 1 piece, 48V is composed of 4 pieces, for more than 1 year of battery, most of the situation will not be all batteries have aging, only need to use the instrument to measure which battery voltage is problematic, replace it.
Battery connection line contact is poor: for some car owners who often drive bumpy sections, this should be taken as a key concern, when the connection line of each group of batteries has contact problems, it will lead to some batteries not charging, not discharging, naturally leading to a reduction in the original battery storage, a decrease in discharge, and the battery life will be abnormal.
Solution: This problem can also be solved at home, after opening the battery, the connection line of each small battery is dragged to see if there is a falling off, and if there is a screw, it can be screwed.
Electrolyte evaporation: If the electric vehicle is used for more than 2 years, this is also one of the main reasons that need to be considered, the ordinary maintenance-free battery electrolyte can be used for about 3 years, but due to the actual habits of the car and the charging is not standardized, it will lead to the electrolyte being evaporated in advance, resulting in problems that affect the capacity, resulting in fast charging and fast use.
Solution: About the evaporation of the electrolyte, the simple way is to supplement the electrolyte, in fact, the operation method is not difficult, open the battery reserved hole, directly inject the appropriate amount of electrolyte, but this method is not "universal", it does not repair the damage problem that has been caused, but if it is found early, the battery life can be appropriately extended.
Charger, charging cable plug problem, resulting in charging abnormalities
When the battery is troubleshooting, it is necessary to consider whether there is a problem with other components of the electric vehicle in the charging process, resulting in abnormal charging, the experience summary of small connoisseurs, often found in the charger, charging cable plug these 2 places;
Charger failure: Although the price of the charger is not expensive, it is an electronic device after all, it is composed of several electronic components, it is easy to cause a failure due to aging and bumping, so that the monitoring is not accurate in the process of charging, and the situation of green light in advance occurs, resulting in thinking that it is full, but it is not full.
Solution: The charger is faulty without considering maintenance, directly replacing the charger is the most direct, but the replacement of the same parameters of the charger, it is best to be the original charger, so that the degree of acrubinance with the battery will be higher.
Charging cable plug corrosion, burning: when the electric vehicle is charged, after all, there is a current through, and the connection line plug is a simple plastic, it is easy to be affected by the surge insurge current generated by the voltage mismatch, corrosion, incineration is also normal, thus affecting the battery storage.
Solution: Directly spend 2 yuan to replace a plug, if it is more convenient, directly cut off the plug, with insulating tape to connect the cable.
Conclusion: The above is when the electric vehicle battery has abnormal battery life, charging a full charge, running up a drop of 2 blocks of electricity, some of the main reasons, if the electric vehicle has such a situation, as long as according to the above points, one by one to troubleshoot and repair, small experts suggest, do not encounter failures, directly replace the battery, after all, a group of batteries hundreds of dollars, it is possible to solve things without spending money or a few dollars, there is no need to waste money.
I hope the above can help you, pay attention to the electric vehicle connoisseurs, and share the information and views related to electric vehicles every day.