How to Repair Electric Vehicle Battery

Open the battery cap and remove six hard hats.

How to repair an electric vehicle battery.

Fill each hole with distilled water with a syringe. If 1.28 standard electrolytes are added, the polar plate may burn up due to high acid solubility. For example, if we eat hot pot, why do we eat more salty, that is to say, when the water evaporates, the salt will not evaporate through water vapor. In the same way, the acid in the battery will not be evaporated. What is missing is water. So we just add about 20-30 ml of distilled water to each hole.

How to repair an electric vehicle battery.

Fill it up and let the battery rest for half an hour, allowing the sponge around the plate to fully absorb water. Then use electricity to block the discharge of electricity, discharge all the electricity in the battery, and if there is no resistance, you can use a 12V light bulb instead, such as: motorcycle headlights, car turn signals can be, as long as they can discharge to 0v The effect. How to judge that the battery is nearly dead, the resistance discharge of the cement is hot at the beginning, and gradually it is not hot. At this time, the battery is also dead. In the case of light bulbs, it is also direct. As long as the light is slowly not on, it means that the discharge of this battery is over. The discharge time depends on the capacity of the battery discharge. We can first ride the battery until it is out of power. This can shorten the discharge time.

How to repair an electric vehicle battery.

After charging the battery after the discharge, the condition can be used as a pulse charging method, because the pulse charging method can effectively remove the vulcanization of the polar plate and increase the battery capacity. What you don't have can be replaced by a car.

How to repair an electric vehicle battery.

After charging, use a syringe to remove excess water from each hole. A total of 6 holes, step by step completed.

How to repair an electric vehicle battery.

Cover the hat and cover, you can load the car.

First open the cover plate on the battery, because the internal coating glue generally opens the cover plate is broken, no harm.

There are six small holes, covered with rubber caps, put it away together with the surrounding white adsorption cotton.

Teach you how to fix a battery!

With an injection syringe, each small hole is added with about 25 mL of supplement fluid(depending on the lack of liquid in the personal battery, note that it must not exceed the upper polar plate or the liquid in the charge will be full, because the liquid will boil when charging, and more will be added. Pull back). Watch out for air, or you won't be able to get in.

Teach you how to fix a battery!

Dry the surrounding leakage, restore the cap, absorb cotton. Wrap the battery around with the tape. At this point, your battery can be used for another two years. OK!

Teach you how to fix a battery!

Battery repair refers to the collective name for the maintenance of secondary rechargeable batteries with reduced performance or failure through physical or chemical means. It can restore the capacity of the battery, prolong the service life of the battery, and improve the performance of the battery.

Batteries, also known as chemical power supplies, are devices that can provide DC power for electrical appliances. Chemical power supplies convert chemical energy into electrical energy through Redox electrochemical reactions. A primary battery is a disposable battery, and a secondary battery is a battery that can be used repeatedly, so the secondary here actually means multiple times. Secondary batteries are also called rechargeable batteries or batteries.

Battery repair refers to the collective name for the maintenance of batteries that have deteriorated or failed through physical or chemical means.

A secondary battery, also known as a "rechargeable battery," refers to a battery that can continue to be used after the battery is discharged by recharging the active substance. The main rechargeable batteries on the market are "nickel hydrogen", "nickel cadmium", "lead acid(lead battery)", "lithium ion(including lithium battery and lithium polymer battery)" and so on. There are many ways to repair lead-acid batteries, such as "water therapy", "shallow circulation high current charging method", "Nano carbon sol battery activator repair", "pulse battery repairer repair" and "battery repair fluid repair".

Sulfate

Irreversible sulfuric acid salinization referred to as sulfuric acid salinization. When a lead-acid battery is discharged, a combination of positive and negative plates is produced, IE, lead sulfate, the lead sulfate is a substance that is insoluble in water and does not conduct electricity. Under normal circumstances, the crystal of lead sulfate formed by the battery after discharge is relatively small. When charging, under the action of electricity, it is relatively easy to dissolve and reduce to lead. If used improperly, it is often under-charged, lost water, over-discharge, etc.. Lead sulfate will form a large and hard crystal. At this time, it is difficult to reduce it to lead in a general way, so it is called irreversible sulfate. Because of sulfuric acid salinization, on the one hand, it can block sulfuric acid from contacting other active substances and reacting: On the other hand, The number of active substances is reduced, It can cause the battery capacity to drop, serious will cause the battery life to terminate.

The shedding of reactive substances

When we repair used batteries, some batteries add water to repair, and some red-brown liquids flow out of the water injection hole. That is the active material that is detached. The reason for the release of the active material is as follows: 1. The battery is affected by external forces, such as vibration, Crash, etc. .2, α-PbO2. β PbO2 variant model. α PbO2 is the active material skeleton. When the battery is charged and discharged, part of α-PbO2 is converted to β-PbO2, resulting in softening and dropping of .3, as the cycle progresses, The active substance is gradually crystallized from an amorphous state, that is, the crystallization degree increases, the number of hydrated polymer chains decreases, the gel pressure resistance increases, the electrical contact between grains deteriorates, and the active substance decays .4. It is also believed that with the continuous process of charging and discharging, Active substances form a number of dense lumps. When there is not enough connection between lumps, the active material will fall off and the battery will fail.

Battery voltage

The potential difference between the positive and negative poles of the battery is called the voltage of the battery, which is generally measured by a multimeter. In the process of battery repair, the voltage has three forms: the first is called an empty voltage, also known as an open voltage, the battery voltage measured when the battery is neither charged nor loaded: The second is the load voltage, which is the battery voltage measured at a certain time during the battery discharge. The third is the online voltage, which is the battery. The voltage measured at a certain time during the charging process, understand three voltage measurement methods to determine whether the battery is broken or short-circuited; The internal resistance calculation of the battery is of great significance.

Battery capacity

The capacity of the battery is an important indicator of the performance of the battery. Generally, the time of discharge(hour) and the discharge current(ampere) are expressed as the general term, IE the capacity = discharge time × discharge current. The actual capacity of the battery, Depending on the number of active substances in the battery and the utilization rate of active substances. The more active substances are, the higher the utilization rate of active substances, the larger the battery capacity. The smaller the reverse capacity.

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