Battery Car Maintenance Method

Jun 19, 2021

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1. It should be fully charged before use. Newly purchased electric vehicles should be fully charged before use. Because many electric vehicles have been stored in stores for several months, or even more than half a year, they must be fully charged before using them. It is best not to use them immediately after fully charged. They need to be left for about ten minutes.


2. The battery should be installed firmly on the electric bicycle. Remove the battery for charging. When installing, install the battery on the electric bicycle firmly to prevent the battery from being damaged by vibration during riding. Do not drop, roll over, or press the battery during transportation.


3. Keep the battery dry and clean. Frequently remove dust and dirt on the battery cover, and pay attention to keeping the battery dry and clean to prevent the battery from discharging itself.


4. Develop a good habit of charging the battery every night. Never leave the battery in a state of insufficient power for a long time, and develop a good habit of charging the battery every night. If it is not used for a long time, it should be fully charged, placed in a cool and dry place, and recharged regularly, usually 10 days.


5. Just start with a pedal. When the electric bicycle is just started, use the pedal. If there is no pedal, you can use the foot to push the ground to help start. When going uphill, use the pedal to help the electric bicycle go uphill to avoid excessive discharge current and damage the battery.


6. Do not over-discharge the battery, and do shallow discharge and frequent charging. When riding, pay attention not to over-discharge the battery. After the battery is discharged to the termination voltage, the continued discharge is called over-discharge. Over-discharge can easily cause a serious loss of battery power, thereby greatly shortening its service life. Therefore, when the battery is in use, avoid deep discharge as much as possible, and perform shallow discharge and frequent charging. Generally, it should be done. The battery should be charged once when the depth of discharge is 50%. Electric bicycles are generally equipped with undervoltage protection function. When only one indicator light on the battery level indicator is on, the power should be turned off, the pedal should be used, and the battery should be charged as quickly as possible to avoid over-discharge of the battery.


7. Do not unlock the battery for a long time after discharging, and turn it off immediately when not in use. The internal resistance is large at the end voltage, and the electrolyte concentration is very thin, especially the plate hole and surface are almost neutral. The internal resistance tends to heat up during over-discharge, and the volume expands. When the discharge current is large, obvious heating even occurs. Heat and deformation. At this time, the concentration of lead sulfate is particularly high, and the possibility of survival of the crystal branch short circuit increases. Moreover, at this time, lead sulfate will crystallize into larger particles, that is, irreversible sulfation, which will further increase the internal resistance, and the charge recovery ability is very good. Poor, it can't even be repaired. The battery should be prevented from over-discharge when in use, and “under-voltage protection” is a very effective measure. In addition, because the "undervoltage protection" of electric vehicles is controlled by the controller, other devices outside the controller, such as voltmeters, indicator lights and other power-consuming appliances, are directly powered by the battery, and the power supply is generally not controlled. Controlled by the electric vehicle, the electric vehicle lock switch starts to use electricity once the switch is closed. Although the current is small, overdischarge will occur if it is discharged for a long time for 1-2 weeks. Therefore, do not open the lock for a long time, and turn it off immediately when not in use.


8. Avoid overcharging. When the charger shows that it is full, it stops charging. It can't be charged overnight or even several days. Overcharging will cause the active material of the plate to harden and fall off, and cause water loss and battery deformation. The storage battery runs in high-temperature seasons, 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 immediately after exposure to the hot sun, and keep away from heat sources. Avoid overcharging. In addition, the charger parameters should be selected to be well matched with the battery. It is necessary to fully understand the operating conditions of the battery in the high-temperature season and the changes during the entire service life. Do not place the battery in an overheated environment during use, especially away from heat sources when charging. After the battery is heated, cooling measures should be taken, and the battery can be charged only when the temperature of the battery returns to normal. The installation position of the battery should be as good as possible to ensure good heat dissipation. If overheating is found, stop charging and check the charger and battery. When the battery discharge depth is shallow or the ambient temperature is high, the charging time should be shortened.


9. Avoid long-term power loss. Long-term power loss will vulcanize the plates. In low temperature conditions, charging mainly has the problems of poor charging acceptance and insufficient charging, resulting in battery loss. In low temperature, heat preservation and antifreeze measures should be taken, especially when charging should be placed in a warm environment, which helps to ensure sufficient electricity, prevent the generation of irreversible sulfation, and prolong the service life of the battery.


10. Prevent short circuit. Special care should be taken during installation or use. The tools used should be insulated. When wiring, electrical appliances other than the battery should be connected. After inspection, there is no short circuit. Finally, the battery should be connected. The wiring specifications should be well insulated to prevent overlapping pressure. rupture. It is forbidden to use the battery short-circuit method to detect the charging status of the battery to prevent the explosion and cause casualties. When the battery is in a short-circuit state, its short-circuit current can reach hundreds of amperes. The stronger the short-circuit contact, the greater the short-circuit current. Therefore, all connections will generate a lot of heat, and the weaker links will generate more heat, which will melt the connection and cause a short circuit.


The battery may locally produce explosive gas or explosive gas collected during charging. Sparks will be generated when the connection is fused, which will cause the battery to explode. If the battery is short-circuited for a short time or the current is not particularly large, it may not cause the connection to fuse However, the short circuit will still cause overheating, which will damage the adhesive around the connecting strip and leave hidden dangers such as liquid leakage. Therefore, the battery must not be short-circuited. When installing or using it, you should be especially careful with the tools used. Insulation measures should be taken. When wiring, the electrical appliances other than the battery should be connected first. After inspection, there is no short-circuit, and finally the battery should be connected. Good insulation to prevent rupture caused by overlapping pressure.


11. Each start time cannot exceed 5 seconds. Avoid long-term high-current discharge of the battery, which will greatly damage the internal structure of the battery. It is recommended that the vehicle owner should not start more than 5 seconds each time. Two consecutive starts are required, with an interval of 10 to 15 seconds.


12. Prevent exposure to the sun. Exposure to the sun will increase the temperature of the battery and increase the activity of the active materials in the battery, which will affect the service life of the battery.


13. The discharged battery should be recharged in time, and it should not be left for more than 12 hours.


14. Check and adjust the front and rear brakes. Before using the electric bicycle, check and adjust the front and rear brakes. The front brake is controlled by the right brake lever, and the rear brake is controlled by the left brake lever. The front and rear brakes should be adjusted so that they can brake reliably when the left and right brake handles reach half the stroke. The brake shoes should be replaced in time because of excessive wear.


15. Before using the electric bicycle, check the lubrication of the chain. Feel and observe whether the chain shaft of the chain rotates flexibly and whether the chain link is severely corroded. If it is corroded or the rotation is not flexible, add proper amount of lubricating oil, and change the chain in serious cases.


16. Before riding an electric bicycle, check the tire pressure, the steering flexibility of the handlebar, the flexibility of the front and rear wheels, the circuit, the battery power, the working condition of the motor, and the lights and horns.

17. The standard load capacity of electric bicycles is 75 kg, and overloading should be avoided as much as possible.


18. When using electric bicycles in cold weather, you should try to drive with manual or electric assistance, and pay attention to the battery's power and voltage indication. In general, when the weather is cold, the depth of discharge of the battery should be appropriately reduced, and the battery should not be driven under voltage. This is because the charging capacity and discharging capacity of the battery are reduced when the weather is cold.


19. Electric bicycles should be stored in a cool, ventilated, dry place, away from corrosive liquids and gases. When storing, the entire vehicle should be upright, the tire pressure should be sufficient, heavy objects should not be loaded on the vehicle body, and the battery should be stored separately.