How to fix electric vehicle batteries and principles

If the battery appearance is not damaged, bulging, there is no short circuit, and there is no sign of breaking the road, the following methods can be used to try to repair the battery:

1, the use of positive and negative pulses to depolarize the battery, and then completely discharge, so that the cycle three times, if the capacity has recovery signs, can be more than a few cycles to achieve better repair results.

2, add water repair, add water must be added ion water or pure water, do not add tap water, will cause the battery self-discharge problem.

1, the battery is completely discharged first, because after the discharge, the internal acid density of the battery is basically 1.1 g/mL;

2, remove the cover, and then remove the safety valve, pay attention to the preservation, do not dirty the safety valve, for later use;

3, add water, the general 12AH battery single grid water increase of 8 to 10g, 20AH battery single grid water increase of about 15g;

4, leave about one hour, install the safety valve and cover plate;

5, charging, full of electricity and then complete discharge, so that the cycle three times, the capacity will be a good expansion.

Lead acid batteries should be:

1, the battery must be fully charged before shelving, and under the premise of full power, it is generally recommended that the battery must be recharged in 2 to 3 months. If conditions are necessary, it is best to charge once in 1 to 2 months.

2, when the electric vehicle is not in use, it needs to be stored in a ventilated and cool room. After the battery pack is full of electricity, the load line is disconnected. Since the self-discharge of the lead-acid cell itself will cause sulfuric acid salinization, if it is not recharged for a long time, it will cause capacity recovery difficulties. To make the affected life, Therefore, it is generally recommended that the battery must be recharged in 2 to 3 months to facilitate the battery life.

To detect the causes of damage first, vulcanized machines, broken shell repair, the simple method is to add liquid charging.

(1) Methodology and steps

1 Remove the soft plastic film covering the individual battery with thin slices to reveal the sealing valve inside.

2 The circular sealing valve is located in the center of the surface of the battery box. Generally, there is a small valve cap with a sealing mechanism inside. The sealing mechanism of each manufacturer is not the same. Take off the bonnet and carefully remove the sealing material inside. At this time, pay attention to the sealing material and its order. Do not make mistakes and do not break the sealing material, and put it into a clean, dust-free plastic bag.

3 After all the sealing valves are opened, you can see the internal part of the situation and estimate the degree of drying of the electrolyte.

4 A suitable amount of distilled water that has been fed into the additive is sucked by a glass tube and injected into the battery from the sealing port. Note that the water injection amount of each battery should be as consistent as possible to measure the degree of dryness. If the degree of dryness is serious, water injection should be added.

5 When water is injected, the single battery should be laid flat, that is, it should be poured down so that the sealing port is in the horizontal direction. The purpose of this is to make the water volume of each single cell consistent. As the water injection volume increases, the sealing port should gradually rise. Note to a certain extent, stand up the battery to see if the water surface is higher than the plate. If it has been raised and floated 5mm above the top of the plate, stop the water injection. Check the water surface for a few minutes. If it is stable, do not fill the water. Otherwise, continue to add water. 5mm, can not be injected too much, to avoid obstructing the air circulation inside the shell, and finally record the injection amount.

6 Temporarily cover the seal to prevent impurities from falling into. Static 1h, immerse it through the electrode plate and partition plate and fully fuse with the original electrolyte. If the water surface falls again, it should be supplemented to 5mm high, then charge it, and the normal charging ratio should be preferably slightly overcharged, so that the vulcanized plate can be desulfurized and reduced as much as possible. The precipitated sulfuric acid is fully dissolved in unsaturated electrolytes. Stop charging when charging to end voltage.

7 The discharge is monitored with a battery tester or a homemade dashboard, and the battery capacity and voltage are measured. The discharge can also be carried out by soil methods and compared.

8 Double charge and discharge, and carefully measure the data to compare the charging time, voltage change speed and capacity recovery, to see if it is close to normal or has recovered.

Water control: Confirm that there is a clear effect, carry out final charging and stand still 1h, stand the battery upside down on a plastic container of appropriate size and can receive water, and control excess water.

After comparing the individual batteries, which are basically close to each other, the water injection will be completed.

(2) Notes

(1) Lead batteries during the life period should not be opened at will. The original seal valves have a fixed open valve pressure and closed valve pressure. After casually moving, the seal valve is not opened and closed within the specified pressure range. It should be opened and can not be opened. When the closure is not closed, it loses its due effect. The pressure reaches and can not be turned on, the battery housing may be damaged or burst, and the frequent opening without reaching the valve opening pressure will accelerate the evaporation of the electrolyte, and external impurities will also be easy to enter, both of which can damage the battery.

Users who do not have professional knowledge should not casually open the sealing valve to prevent acid mist spillage and damage the eyes or skin. Some electrolytes are mixed with some high-efficiency long-life additives and open the sealing valve. Some volatile components will evaporate in a short period of time, thus changing the composition ratio of the electrolyte and reducing its efficiency.

The page contains the contents of the machine translation.If the battery appearance is not damaged, bulging, there is no short circuit, and there is no sign of breaking the road, the following methods can be used to try to repair the battery:

1, the use of positive and negative pulses to depolarize the battery, and then completely discharge, so that the cycle three times, if the capacity has recovery signs, can be more than a few cycles to achieve better repair results.

2, add water repair, add water must be added ion water or pure water, do not add tap water, will cause the battery self-discharge problem.

1, the battery is completely discharged first, because after the discharge, the internal acid density of the battery is basically 1.1 g/mL;

2, remove the cover, and then remove the safety valve, pay attention to the preservation, do not dirty the safety valve, for later use;

3, add water, the general 12AH battery single grid water increase of 8 to 10g, 20AH battery single grid water increase of about 15g;

4, leave about one hour, install the safety valve and cover plate;

5, charging, full of electricity and then complete discharge, so that the cycle three times, the capacity will be a good expansion.

Lead acid batteries should be:

1, the battery must be fully charged before shelving, and under the premise of full power, it is generally recommended that the battery must be recharged in 2 to 3 months. If conditions are necessary, it is best to charge once in 1 to 2 months.

2, when the electric vehicle is not in use, it needs to be stored in a ventilated and cool room. After the battery pack is full of electricity, the load line is disconnected. Since the self-discharge of the lead-acid cell itself will cause sulfuric acid salinization, if it is not recharged for a long time, it will cause capacity recovery difficulties. To make the affected life, Therefore, it is generally recommended that the battery must be recharged in 2 to 3 months to facilitate the battery life.

To detect the causes of damage first, vulcanized machines, broken shell repair, the simple method is to add liquid charging.

(1) Methodology and steps

1 Remove the soft plastic film covering the individual battery with thin slices to reveal the sealing valve inside.

2 The circular sealing valve is located in the center of the surface of the battery box. Generally, there is a small valve cap with a sealing mechanism inside. The sealing mechanism of each manufacturer is not the same. Take off the bonnet and carefully remove the sealing material inside. At this time, pay attention to the sealing material and its order. Do not make mistakes and do not break the sealing material, and put it into a clean, dust-free plastic bag.

3 After all the sealing valves are opened, you can see the internal part of the situation and estimate the degree of drying of the electrolyte.

4 A suitable amount of distilled water that has been fed into the additive is sucked by a glass tube and injected into the battery from the sealing port. Note that the water injection amount of each battery should be as consistent as possible to measure the degree of dryness. If the degree of dryness is serious, water injection should be added.

5 When water is injected, the single battery should be laid flat, that is, it should be poured down so that the sealing port is in the horizontal direction. The purpose of this is to make the water volume of each single cell consistent. As the water injection volume increases, the sealing port should gradually rise. Note to a certain extent, stand up the battery to see if the water surface is higher than the plate. If it has been raised and floated 5mm above the top of the plate, stop the water injection. Check the water surface for a few minutes. If it is stable, do not fill the water. Otherwise, continue to add water. 5mm, can not be injected too much, to avoid obstructing the air circulation inside the shell, and finally record the injection amount.

6 Temporarily cover the seal to prevent impurities from falling into. Static 1h, immerse it through the electrode plate and partition plate and fully fuse with the original electrolyte. If the water surface falls again, it should be supplemented to 5mm high, then charge it, and the normal charging ratio should be preferably slightly overcharged, so that the vulcanized plate can be desulfurized and reduced as much as possible. The precipitated sulfuric acid is fully dissolved in unsaturated electrolytes. Stop charging when charging to end voltage.

7 The discharge is monitored with a battery tester or a homemade dashboard, and the battery capacity and voltage are measured. The discharge can also be carried out by soil methods and compared.

8 Double charge and discharge, and carefully measure the data to compare the charging time, voltage change speed and capacity recovery, to see if it is close to normal or has recovered.

Water control: Confirm that there is a clear effect, carry out final charging and stand still 1h, stand the battery upside down on a plastic container of appropriate size and can receive water, and control excess water.

After comparing the individual batteries, which are basically close to each other, the water injection will be completed.

(2) Notes

(1) Lead batteries during the life period should not be opened at will. The original seal valves have a fixed open valve pressure and closed valve pressure. After casually moving, the seal valve is not opened and closed within the specified pressure range. It should be opened and can not be opened. When the closure is not closed, it loses its due effect. The pressure reaches and can not be turned on, the battery housing may be damaged or burst, and the frequent opening without reaching the valve opening pressure will accelerate the evaporation of the electrolyte, and external impurities will also be easy to enter, both of which can damage the battery.

Users who do not have professional knowledge should not casually open the sealing valve to prevent acid mist spillage and damage the eyes or skin. Some electrolytes are mixed with some high-efficiency long-life additives and open the sealing valve. Some volatile components will evaporate in a short period of time, thus changing the composition ratio of the electrolyte and reducing its efficiency.

The page contains the contents of the machine translation.