How do you repair electric vehicle battery properly?

If it is lead-acid battery, usually adopts pulse charging and discharging device for a certain application of charge and discharge, the crystallization of lead sulfate dissolved in solution, in order to achieve the purpose of restoring capacity; for lithium ion batteries and usually do one or two depth charge and discharge, but the effect is not too big, after all lithium electricity memory effect is almost negligible

If battery appearance without damage, ballooning shows no sign of a short circuit, open circuit, can adopt the following methods to try to battery repair.

1, adopt the way of positive and negative pulse to depolarization rechargeable batteries, to completely discharge, so three times, if there were signs of recovery capacity, cycle a few times more, get better repair effect.

2, repair of water, add water to add deionized water or pure water, do not add water, can cause the problem of battery self-discharge.

1, you will completely discharge of the battery, because after discharge the battery under the internal basic acid density of 1.1 g/mL;

2, remove cover plates, and then take out the relief valve, pay attention to keep, don't get dirty the relief valve, for later use.

3, add water, general water added a single 12 ah battery for 8 ~ 10 g, 20 ah battery a single add water at about 15 g;

4, and let stand for an hour or so, the relief and cover plates installed;

5, recharged, after a full charge and then to completely discharge, so three times, capacity will have a good show.

Lead-acid battery in long-term need not when should do:

1, tabled before the battery must be charged, and on the premise of full electric general advice in 2 ~ 3 months must give added electric batteries, conditional word best charging a 1 ~ 2 months.

2, electric cars in need not when, should be stored in ventilated cool room, after a full charge the battery pack to disconnect the load line, the sulfuric acid salinization due to self-discharge of lead-acid battery itself will, if long time don't add electricity capacity recovery is difficult to make impact longevity, so general advice in 2 ~ 3 months must give added battery, for the battery life.

To detect damage reason, vulcanization machine, off the opening of lattice shell, a simple method is to add liquid charging.

(1) The methods and steps

(1) With thin slices of the monomer battery covered RuanSu film opened, revealing the seal valve.

(2) the circular seal valve is located in the center of the upper surface of battery pack is, generally speaking, there are a small valve cap, sealing mechanism, each manufacturer sealing mechanism is the same. Remove the valve cap, and be careful of inside sealing material, should pay attention to the sealing material and its sequence at this moment, don't mistake to break, sealing materials and in clean dust-free seal stored in plastic bags.

(3) Seal valve after all stand aside, as you can see the internal part of the case, estimate of the electrolyte dry degree.

(4) with glass tube suction amount has the additive of distilled water, and the sealing mouth into a battery. To keep consistent as far as possible each battery injection to measure its dry degree, the dry degree is serious, want much water injection.

(5) when the water injection, monomer battery should be flat, namely fell to seal in the horizontal direction, the aim is to get the amount of water to make each single cell battery, with the increase of water injection, seal shall be gradually raised, to a certain extent, set up the battery to see whether the water above the plate, are over and over the top 5 mm plate to stop water, rest for a few minutes to observe the surface of the water, if stability is no longer with water, otherwise, continue to add water to 5 mm, higher is injected too much, avoid obstruction of air flow in the crust; finally, the injection rate for record.

6 temporary cover seal to prevent impurities fall into.(1 h, made original soak plate and baffle plate and the electrolyte to fully mix, if the water drop should add to 5 mm high, after charging, and the normal charge is a little overcharge, than best to make the plate as far as possible the desulfurization sulfide reduction, precipitation of sulfuric acid dissolves in unsaturated electrolyte. Charge to stop charging when termination voltage.

All landowner battery discharge detector or homemade dashboard monitoring, determination of battery capacity, voltage, also can use indigenous method for discharge, and record.

Was repeated twice to charge and discharge, and carefully measured data, compare the charging time, speed and capacity recovery voltage change, look to whether have close to normal or recovered.

Pet-name ruby water control: confirm have obvious effect, the final charge and static 1 h, put the battery upside down in a appropriate size, can meet the water plastic containers, point out the extra water.

Attending the basic close to compare various monomer battery, the water injection.

(2) The matters needing attention

(1) during the life period of lead-acid batteries and should not be casually open the seal valve, original seal valve has a fixed opening valve and closing valve pressure, just after the move, seal valve is beyond the scope of regulation pressure opening and closing, the open and cannot be opened, the closure and failed to close, then lost its proper role. Pressure is not open, battery shell may be damaged, or blowout, and frequently open to open the valve pressure, the can make electrolyte evaporation speed, impurities also easy to enter the outside world, both can damage the battery.

(2) no professional knowledge of the users don't open the seal valve, prevent one thousand acid mist overflows, damage to the eyes or skin. Some electrolyte mixed with some efficient long-life additives, open the seal valve, some volatile components will evaporate within short time, which changed the electrolyte composition, reduce its efficiency.

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