Can the electric vehicle that has burned out of the battery be repaired?

Can the electric vehicle that has burned out of the battery be repaired should be determined according to the specific situation.

1, economically speaking, if the cost of battery repair and the cost of buying a new battery are quite different, and there is a long service life after repair, you can try to repair it. This article should be used as a prerequisite for repair.

2, in addition to the broken case, thermal runaway, plate rot (professional is softened, but decay to describe more appropriate. It refers to the entire plate into mud, metal plate gate into process, not of metal. Active material loss of image understanding and softening), the battery can be repaired with sulfuric acid by mistake. Battery, burn out the thermal runaway is beyond repair.

3, the highest capacity of repair, determined by degree of intact plate, plate if decomposed by 45%, and thermal runaway, repair the full capacity is 100% - 45% = 55%.

4 and decay is usually formed in the process of charging is plate (related to the charger), negative plate damage, discharge problems (such as excessive discharge).

The battery repair methods:

1, discharge the battery with a bulb or electric furnace wire to 0V, that is, clear it, no electricity at all. When discharging, it is better to discharge it one by one or in parallel. This work must take a certain amount of time before you can ride the car. Can't ride and re-discharge, it will be faster;

2, open the battery cover, needle tube to add specific gravity of 1.3 battery vent dilute sulphuric acid electrolyte to the rich fluid (full), stop 20 minutes;

3, charge the battery filled with electrolyte!!! If it is a 20AH battery, use a constant current charger with a range of 70V. It can charge four batteries in series and charge with a constant current of 1.5A for 24 hours. Do not limit the pressure, the general battery can be repaired to 8-9% new performance; if there is no one, there is a way to charge the charger with the usual charging motor, but the battery charging 20AH should be charged with 10AH charger (The current is generally 1.5A-1.8A) to charge, one can only charge 2-3, the time can be charged 20-24 hours. Generally, the battery can be restored.

4, if you want to repair the 10 ah battery, using the above method with continuous filling 20-1 a current 24 hours also can repair!!!!!!But the current of 10 ah charger about 1.5 to 1.8 A, it's too big, can be A series resistance to reduce the current to 1 A.

5, the electrolyte coming out of the battery can be pumped to the lean liquid with a syringe, and the repair is completed.

First of all, to see how your battery is bad, then select the appropriate method to repair.

In general, batteries are reduced in capacity due to vulcanization caused by water shortage. This is what we often encounter, the battery is used, it feels not as durable as before, and it is not as far away as before. These are caused by the vulcanization of the battery. You can use a repair fluid and a battery repairer to repair the battery. It is possible to recover about 90% of the battery capacity.

A piece of the battery used for 1 to 2 years, on how to repair the also won't like new battery capacity, so there is no such thing as an 100%.If you were told that after repair battery capacity up to 100% than the new battery was fine, that's not true.

1. The imbalance

Repair method: Find the battery with the capacity, voltage, self-discharge, battery internal resistance and so on.

2. The water loss

Repair method: Open the cover above the battery. Some battery covers are ABS glued, and some are snap-fit connections. Some are skateboarding. Be careful not to damage the cover when opening the cover. At this time, you can see the rubber caps of the six exhaust valves. The rubber cap, show vent, through the vent can see inside the battery. Some batteries can unscrew the exhaust valve base, cannot open the exhaust valve rubber and spin sacking valve base. Some batteries have some filler around the rubber cap. Open the cover and light it with your hand to see if there is any dryness inside the hole, that is, if the battery loses water. The battery plate is made of glass fiber cotton wrapped in white, normal should be wet. The distilled water is sucked into the battery through a vent hole. The water-filled battery is covered with a gas-permeable covering to cover the vent hole to prevent dust from falling into the vent hole. It is best to use medically distilled water. The principle of filling water is rather less not more. Can add enough, more than the decline in the proportion of acid, battery capacity is insufficient. No experience can be 5 ml per hole. It is best to look at, damp, sparkling, liquid. Wet at the right moment, twinkle is much, liquid is too much.

Special note: hydrating tools using glass, such as plastic straws. It is recommended to use medical disposable syringes, easy to use and convenient measurement. Hydrating instrument cannot use any metal bearing, syringe should pull metal needles, casing section plastic pipe after use.

3. Sulfation

Repair method: The vulcanized battery is repaired with the Kedi repair instrument, and the fuzzy digital control theory is adopted. By measuring the state of the battery, the positive and negative variable frequency particles are continuously emitted while charging and discharging, and the battery is removed in 10 to 20 hours, hard lead sulfate that crystallizes.

4. The plate to soften

Repair method: after check 10.5 V battery discharge, with light bulb deep discharge from 1 to 5 hours. Then use activation device, activation of repair.

5. A short circuit

Repair method: water battery, can punch holes clearly, make short-circuited lead powder! Electric vehicle battery, you can quickly short-circuit positive and negative, burn the short-circuited place!

6. Open

Repair method: 100A detects the battery voltage 0V as an open circuit. Using a single measurement method, the open circuit is measured and soldered.

Use a multimeter to measure where the battery is open!

The service life of the battery are battery repair just keep it up to normal design life. Promote battery repair of the products to any factors as well as new batteries, battery can prolong the service life of how many times, these are not scientific, also is not practical. Contain any battery damage factor, have impact on battery life, the question is how to reduce the battery damage, how to reduce the impact on battery life, the following is a simple way to introduce several kinds of electric vehicle battery daily maintenance, provide the reference for the user.

First, a supplement, timing, distilled water. Users think generally, maintenance-free battery need not add water, actually this is wrong. Maintenance-free battery produces in the process of charging and large current discharge quantity of heat, heat is there will be water evaporation, while water evaporation process is slow, but over time, the amount of accumulated water evaporation can be reckoned. Therefore should give the battery hydrating every six months or so, so that the service life of the battery is extended.

Second, "Use the car every day, charge every day". Lead-acid batteries have no memory, so the rapid decrease in capacity is mainly due to some reasons such as battery vulcanization and “loss of water” and "loss of power". The battery is most afraid of "defective power" under voltage, the battery often "losing electricity", the battery plate is extremely vulnerable. To our survey found that 70% of electric vehicle battery capacity to reduce electrical plate by discharge of strong current (starting current) injury caused by (electric motorcycle in particular), electrical plate injury belongs to the battery physical injury, unable to repair the damage. So "charging car every day, every day", guarantee the battery has sufficient voltage becomes inevitable.

Third, often observe the charger. New battery charging process is usually 6-8 hours, after a full charge the charger will be green light, if the charging time is too long to check whether the charger voltage protection badly damaged, if damaged it shall be timely change the charger, otherwise easy to bad battery charger. In addition, don't buy a fast charger, and fast charging also hurts the battery board.

Fourth, skills for starting an electric car: The starting current of the electric vehicle is very large, especially the electric motor of the high-power motor, and the starting current is larger. The high current is very harmful to the battery plate. The best way is to start the electric car before riding, just like riding a bicycle. Of course, many electric motorcycles do not have a riding device, and there is no way.

Fifth, use battery protector as soon as possible. Battery protector is the pulse generator, for pulse continuously eliminate battery sulfide, make plate always stay "clean", so as to achieve the effect of extending the service life of the battery, but battery plate did little damage to the big current (such as some electric motorcycle use with pulse charger, the battery life extension effect is not obvious), must add new technology to improve.

Sixth, the battery is discharged once a quarter. After the battery is used for a period of time, some active substances will inevitably sink. If the active substances are not activated in time, it will inevitably have some impact on the capacity of the battery. Therefore, when using the electric vehicle frequently, it is necessary to make the battery every season, depth discharge once.

Seventh, the battery is not used for a long time for battery charging at least once a month. The aim is to prevent the battery place time is too long and cause battery sulfide and "loss of power".

Eighth, prevent battery from sunlight. Sunlight will increase the temperature of the battery, so be careful.

The page contains the contents of the machine translation.