Reasonable charging method of lead-acid battery of electric vehicle

The most taboo of lead-acid batteries is that when the power is clean, it will be charged again. In this case, the battery life will be greatly discounted. [Do not discharge more than once. The so-called deep discharge refers to the under voltage of the electric vehicle. Power failure, after the under voltage and power failure, the million can no longer continue to power up, the intermittent discharge of the electric vehicle battery is the most serious battery. If you encounter an electric vehicle under voltage and power failure during driving, it is best to get off the vehicle, turn off the electric door lock, and drive the cart. I hope I can help you!

1. Charge when the battery indicator shows the remaining one-third of the battery.

2, the charging environment should be kept dry and tidy, the charger should not be wrapped in plastic bags or plastic bottles because the charger is very easy to burn when it can not breathe.

3, try not to use fast charge, if not necessary for more than two times a month.

4, the charger is placed in a fixed place, do not bump, even if carrying must also fully consider the bump caused by the fault.

5. Charge using the standard charger.

1. The most ideal charging time is when 60%~80% of the battery is consumed.

2, Use more, charge more.

Friendly reminder:

1. Lead-acid batteries have no time and charge requirements for initial charging, and can be charged and discharged at any time without causing plate memory.

2. It should be noted that absolutely no over-discharge and over-charging are required. Over-charging is a process of turning into a workshop, which leads to thinning of the metal layer of the grid, which is easy to break the grid. Over-discharge will lead to vulcanization of the plate and failure of the active sponge structure. To shorten the life of the plate, the lead-acid battery should pay attention to the specific gravity of the electrolyte and the liquid level, and should not be short of liquid.

3. When the lead-acid battery is applied in the car, it is charged and discharged at any time. The instrument on the old-fashioned liberation truck is a pointer amp. You can always see whether it is charging or discharging, especially the headlights. When the high beam is turned on, the generator power supply is insufficient. When the generator speed is low during deceleration, the power in some of the batteries is called. Therefore, the charging and discharging will be switched dozens of times every night, no effect, no need to be like nickel hydrogen The battery must be full. ,

The battery/battery is the power source of the electric bicycle, and it is also a consumable item, and the price is high, so the battery is kept in a good working state and the service life is prolonged, which is great from environmental protection or economical point of view. Practical value. The following are some maintenance methods for batteries:

1 Newly purchased electric vehicles should be fully charged before use. Because many electric vehicles have been put on hold for a few months or even more than half a year in the store, they must be fully charged before use. After the full charge, it is best not to use them immediately. It needs to be left for about ten minutes.

2 The battery is taken down and charged. When the device is installed, the battery should be installed firmly on the electric bicycle to prevent the battery from being damaged by vibration during riding. During the handling of the battery, it is forbidden to throw, roll, or press.

3 Always remove dust and dirt from the battery cover. Pay attention to keep the battery dry and clean to prevent the battery from discharging itself.

4 Never let the battery be in a state of low battery for a long time, and develop a good habit of charging the battery every night. It is not necessary temporarily, it should be filled with electricity, placed in a cool dry place, and charged regularly (usually 10 days)

5 When the electric bicycle is just starting, it is necessary to use the pedal (the method of pushing the ground with no foot) to assist the starting. When going uphill, use the pedal to help the electric vehicle to go uphill to avoid the discharge current is too large and damage the battery.

6 When riding, be careful not to over-discharge the battery. After the battery is discharged to the termination voltage, the continuous discharge is called over-discharge. Over-discharge easily causes serious battery losses, which greatly shortens its service life. Therefore, the battery should be used to avoid deep discharge when it is used. It should be shallow and diligent. In general, the battery should be charged with the best charge when the discharge depth is 50%.

Under-voltage protection is generally provided on electric bicycles. When only one indicator light is on, the battery should be turned off, use the pedals, and try to charge the battery as soon as possible to avoid over-discharging the battery.

When the battery is discharged to the termination voltage, the internal resistance is large, and the electrolyte concentration is very thin, especially in the hole and surface of the plate. The internal resistance is almost neutral. When the discharge is over-discharge, the internal resistance has a tendency to heat, the volume is expanded, and the discharge current is large. Even the heat deformation occurs, when the concentration of lead sulfate is particularly large, the possibility of survival of the short circuit of the crystal branch increases, and at this time, the lead sulfate will crystallize into larger particles, that is, irreversible sulfation, which will further increase the internal resistance and charge recovery. The ability is very poor and can't even be fixed.

When the battery is used, it should prevent over-discharge. It is very effective to take "under voltage protection". In addition, since the electric vehicle "under voltage protection" is controlled by the controller, some devices other than the controller, such as voltmeters, indicator lights, etc., are powered by the battery, and the supply of the power source is generally not controlled by the controller. Once the electric lock switch is closed, it starts to use electricity. Although the current is small, over discharge occurs if it is discharged for 1-2 weeks. Therefore, it is not allowed to unlock for a long time, and should be turned off immediately when not in use.

7 Prevent overcharging, stop charging when the charger is full, not one night or even a few days. Overcharging will cause the active material of the plate to harden and fall off, and cause water loss and battery deformation. The battery runs during the hot season, and there is mainly a problem of overcharging. Therefore, in summer, the battery temperature should be reduced as much as possible to ensure good heat dissipation, to prevent charging after sun exposure, and to stay away from heat.

To prevent overcharging, and to choose the charger parameters to be well matched with the battery, it is necessary to fully understand the battery's operating conditions during the hot season and the changes during the entire service life. Do not leave the battery in an overheated environment during use, especially when charging. Keep away from heat. After the battery is heated, it is necessary to take cooling measures, and the battery can be charged only when the battery temperature returns to normal. The position of the battery should be as good as possible to ensure good heat dissipation. When overheating is found, stop charging and check the charger and battery. The charging time should be shortened when the battery discharge depth is shallow or when the ambient temperature is high.

8 to prevent temporary power loss, temporary loss of electricity will cause the plate to vulcanize. Under low temperature conditions, charging mainly suffers from poor charging acceptance and lack of charging, which causes the battery to lose power. In case of low temperature, anti-freeze measures should be taken, especially when charging, it should be placed in a warm environment, which is beneficial to ensure sufficient electricity, prevent irreversible sulfation, and prolong the service life of the battery.

9 to prevent short circuit, the device or use should be particularly careful, the tools used should take insulation measures, the connection should be connected to the electrical appliances other than the battery, after testing without short circuit, and finally connected to the battery, the wiring specifications should be well insulated to prevent overlap The pressure is broken. It is forbidden to use battery short circuit to detect the charging condition of the battery to prevent accidents caused by explosion.

When the battery is short-circuited, its short-circuit current can reach hundreds of amps. The tighter the short-circuit contact is, the larger the short-circuit current is. Therefore, a large amount of heat is generated in all the connections, and the heat generated in the thin-section is larger, which will blow the joint and cause a short circuit. Explosive gas may be generated in the battery locally, or may be accumulated when charging, and sparks may occur when the joint is blown, which may cause the battery to explode; if the battery short-circuit time is short or the current is not particularly large, the connection may not be blown. However, the short circuit will still be overheated, which will damage the adhesive around the connecting strip, leaving it with hidden dangers such as leakage. Therefore, the battery must not have a short circuit. The device or the device should be used with special care. The tools used should be insulated. When connecting the cable, connect the electrical appliances other than the battery. After the inspection, there is no short circuit. Finally, connect the battery. The wiring specification should be Good insulation to prevent overlap and compression from cracking.

10 Preventing battery from discharging for a long time and large current will greatly damage the internal structure of the battery. It is recommended that the owner should not start more than 5 seconds each time. It takes two consecutive starts, with a time interval of 1015 seconds.

11 to prevent exposure in the sun, exposure to sunlight will increase the temperature of the battery, the activity of the active substances of the battery increases, affecting the battery life.

12 The battery after discharge should be replenished in time, and should not be put on hold for more than 12 hours.