What should I do if I find that the electric vehicle battery is not enough after a long time?

In the process of storage, the battery will have self-discharge, daily self-discharge is about, when the ambient temperature is high, plus the no-load current of the electric vehicle, the self-discharge will be higher, the power should be replenished in time, and then fully charged again after the riding discharge, if the capacity can be restored, it means that the battery is still normal, if it can not be recovered, you can try:

1. Use positive and negative pulses to depolarize the battery, and then completely discharge, so that three cycles, if the capacity has signs of recovery, you can cycle several more times to achieve better repair effect.

2. Add water for repair, add deionized water or purified water when adding water, do not add tap water, it will cause the problem of large battery self-discharge. Here's how:

1) Discharge the battery completely first, because the acid density inside the battery is basically below after discharge;

2) Take out the cover piece, and then remove the safety valve, pay attention to keep it, do not dirty the safety valve, for later use;

3) Add water, generally the water added in a single grid of 12Ah battery is 8 10g, and the water added in a single grid of 20Ah battery is about 15g;

4) Let stand for about an hour, and install the safety valve and cover sheet;

5) Charge, fully charge, and then fully discharge, and so on three times.

When the electric vehicle is not used for a long time, it should be done:

1) When the electric vehicle is not in use, it needs to be stored in a ventilated and cool room, and the load line should be disconnected after the battery pack is fully charged, so as to avoid the battery discharge caused by no-load current.

2) The battery must be fully charged before shelf, and under the premise of full charge, it is generally recommended that the battery must be replenished in 2 3 months, and it is best to charge it once in 1 2 months if possible. Since the self-discharge of the lead-acid battery itself will cause sulfation, if it is not replenished for a long time, it will be difficult to restore the capacity and affect the service life.

I'm an electric vehicle engineer at Epson.

The battery is vulcanized, and it is good to repair the following with a battery repair instrument.

Repair the battery first, if you can't repair it, you can replace it.

Fault and elimination of electric vehicle battery, battery can not be charged.

1.Fault checking.

1) First of all, check whether the connection of the charging circuit is reliable, whether the connection angle between the connection and the plug is intact, and carefully check whether the socket and plug have the phenomenon of "ignition" arcing, whether there is line damage, broken wire, etc.

2) Check whether the charger is damaged and whether the charging parameters meet the requirements, that is, the initial charging current reaches only; The maximum charging voltage reaches only, the charging floating charge conversion current reaches only, and the floating charging voltage reaches only.

3) Check whether there is dryness inside the battery, that is, whether the battery is seriously lacking liquid.

4) Check the plates for irreversible sulfation. The irreversible sulfation of the plates can be determined by measuring the change in the terminal voltage of the plate by charging and discharging. When charging, the voltage of the battery rises very quickly, and the battery has no or very little power.

In the case of surgery, it can be judged that the battery has irreversible sulfation.

2.Troubleshooting.

Connect the charging circuit firmly first, and replace the charger if it is abnormal. Dry batteries should be supplemented with distilled water or electrolyte, maintained and charged, and discharged to restore battery capacity. If irreversible sulfation is found, an equalization charge should be performed to restore the capacity.

The maximum current should be controlled for the maintenance and charging of the dry battery after refilling, charging for 10 15h, and the voltage of the three batteries should be above only. If the voltage difference between the batteries is exceeded, it means that the batteries have been irreversibly sulfated out of sync. For batteries that have irreversible sulfation, the entire battery needs to be replaced or activated.

What should I do if the electric vehicle battery is seriously damaged and cannot be charged? There are two possibilities in this situation, the first charger is broken, resulting in i no current output, and the charge cannot be charged, and the second.

The battery pack is scrapped, resulting in no charging! Try borrowing a charger of the same model in good condition, but it still can't be charged, so the only way to do this is to replace the battery pack.

Less vulcanization: Equalization charging. The battery can be charged with a general activation charge (i.e., balanced charge), which generally lasts for one to two days before returning to normal.

Heavier vulcanization: water **" charge and discharge. It needs to be charged and discharged with "water**" to return to normal.

The specific method is as follows: first add pure water or dilute sulfuric acid with a density to the rich liquid state to the battery, and then charge it with the current for about 20 hours, drain the flowing liquid, and then conduct a capacity test. Repeat the above until the battery capacity is restored.

Precautions for electric vehicle batteries.

Since the shallower the discharge, the number of cycles will increase significantly. Therefore, according to this theory, frequent charging is beneficial to the cycle life, but as far as the charger used in large quantities on the market is concerned, due to the influence of the most advanced factors and technical level, the charger has defects such as high failure rate, poor reliability and low accuracy.

Therefore, sometimes frequent charging can affect the service life of the battery. The battery is emptied and recharged, although the number of charging times is reduced, but when discharging, due to the difference between the single batteries, some single grid over-discharge may be caused, and the charging acceptance capacity of the over-discharge battery will be greatly reduced, causing the fault of insufficient charging.

You can't get that kind of experience without fifteen years of experience.

The electric vehicle battery has not been used for a long time, and it is enough to relay the power cord of the positive and negative levels.

Flush the electricity every once in a while, otherwise it will be scrapped!

If you don't ride, charge it once a month.

Here's how to fix it:

1. It can be activated with a fast charger. The fast charger can be charged 24V-72V, then the battery may be recharged and the voltage will rise. Try charging for 10 minutes first, and then use the charger to continue charging slowly. If the voltage is not enough, charge it a little longer.

Second, you can use a group of good batteries that are the same as 60V20A, positive to positive, negative to negative discharge, and measure how much the voltage has risen in half an hour. You can also pick them up one by one.

3. You can use a low-voltage charger like 48V20A to charge 60V20A, and when the voltage is high, change the original charge.

If you really leave it for too long and can't activate it, you can only change it. However, for the most part, it is possible to use these methods in the short term. The most commonly used is fast charging.

Severe dehydration of the battery. There is no problem with the charger.

The battery can be in severe thermal runaway.

Confirm whether it is thermal runaway: After adding high-purity water to the battery (add 15 20 ml per cell of 20 ampere-hour), let it stand for 10 hours, and then charge it. If the red light is still on, it means that the battery has thermally runaway; If the light turns green, it means that the battery is just out of water, and it can be saved.

Thermal runaway batteries have no repair value at all, consider replacing them with new batteries. Can you confirm if the battery is thermal runaway? Yes, unfortunately, your battery is out of order.

If it is difficult to buy high-purity water, you can consider using distilled water (conductivity is about 1us cm, you can use it), there is really no distilled water, dead horses are live horse doctors, so you have to use a little better wahaha to drink pure water (conductivity 1 9us cm, which has a slight negative effect on the battery), barely usable.

This is a problem caused by ordinary three-stage chargers, the charging voltage of the charger in the high voltage limit and constant current stage is too high (single-cell overvolt), resulting in long-term gas separation of the battery to wash the plates, resulting in water loss, resulting in battery water loss and even thermal runaway. Even some new batteries with chargers have been unable to enter the full state, disconnected and then turned to the green light, this situation is very harmful to the battery, second to none! So much so that some battery car shops also have a timing plug-in board dedicated to battery car charging.

Therefore, charging is the decisive factor in determining the service life of the battery.

It is recommended that you use Hongxin Electronics long-life battery car charger, which can extend the battery life to more than 5 years, and keep the battery capacity above 70% (conservative value).

However, the following 3 conditions must be met:

1. The power connection between the battery pack and the controller must be disconnected every time it is charged, and the long-life charger must be used to charge it, so that the vulcanization repair pulse is not absorbed by the controller;

2. The battery must be added with ultra-high purity water every 1 year, and the new battery must also be added, and the purity of the water quality is required to be <;

3. In ordinary use, try to keep the battery pack fully charged at all times and charge frequently, and the long-life charger is different from the ordinary charger.

It does not hurt the battery, and there is very little gas and water loss during charging;

All of the above conditions are indispensable. If condition 3 is not reached, it will not have a great impact, but it will only increase the sulfidation of the battery, but make it.

After charging with a long-life charger, the vulcanization will be eliminated again, just adding some repair charging time.

If the charger normally checks whether the battery pack has damaged batteries, or whether the series lead is disconnected, such as the charger keeps the red light and the charge is not enough, most of the battery is damaged, provided that the charger is good (lack of water can also cause this phenomenon).

If the battery is left uncharged for a long time, the battery cannot be charged due to self-discharge, and the chemicals inside the battery are passivated. There are many ways to charge it, but it is not easy for non-professionals to operate, you can go to a special battery car battery repair shop to see, it doesn't cost much.

If you are short of water, take it down and try it.

1. If you find that the battery is noisy and cannot be charged after a long time, you can first check whether the charger is normal, which may be caused by the aging of the circuit. In addition, you can check whether there is a problem with the inside of the battery car, and you can check it yourself or ask a professional master to deal with it. 2. Check whether the rated input voltage of charging is consistent with the power supply voltage, the battery can be charged directly in the car, but the power switch must be turned off, or it can be removed and taken to a suitable place such as indoor charging.

3. Please connect the output plug of the charging appliance with the charging jack of the battery properly, and then connect the plug of the charger to the 220V AC power supply. (Note: Do not connect the positive and negative poles of the charger output).

Hello dear, what should I do if the tram battery is not charged after a long time, and the solution is as follows. After this happens, you should go to an agency that specializes in repairing electric vehicles and find a professional to activate the battery. If the battery fails to activate, the battery will need to be replaced.

If you don't need to use the car for a long time, you should also charge the battery regularly, otherwise the battery will run out. An electric vehicle is a simple means of transportation. Its main components include the frame, motor, battery, and controller.

The controller is used to control the circuit of the whole vehicle. Without a controller, an electric car cannot run properly. The controller is generally fixed under the back seat.

It is the power source of the electric motor and can power the electric vehicle. Batteries are the part of the electricity that electric vehicles use to store electricity. The battery can power all the electronic devices on an electric vehicle.

However, the battery is also a consumable part that needs to be replaced regularly. As the number of charging and discharging increases, the performance of the battery will continue to decrease. During the charging and discharging process, the ions in the battery are constantly moving in the electrolyte.

When some ions move in the electrolyte, they react chemically with the electrolyte. As the number of charge and discharge increases, the number of ions in the tank rubber base cell will become less and less, so the performance of the battery will continue to decline. If you can maintain the correct habit of using the car, you can effectively extend the service life of the battery.

One. Try to choose a large-capacity battery, so that you can run farther and drive farther. Two.

You can use a new type of electric vehicle charger, such as a new type of parallel electric vehicle charger for family electric vehicles can be fully charged in 2-3 hours, the main principle is to use parallel charging, rather than high-current charging damage to the battery, add an extra detection line, so that the electric vehicle is not enough, the safety problem of charging time. Three. Calculate the distance before going out, combine the actual situation of your electric vehicle, avoid the electric car running out of power halfway, and if you go far away, you can carry an electric trapped car charger.