The lead-acid battery is generally composed of a positive and negative electrode. When the battery is charged, the power supply is first connected to the positive electrode of the battery, and then connect the negative electrode of the power supply to the negative electrode of the battery. Then, the primary charge is generally divided into two steps: First, the initial current charges the electrolyte to discharge the bubble, and the single-grid voltage of the battery rises to 2.3-2.4V. The current will then continue to be charged for 1/2 initial current, and the electrolyte is filled with drastically, the voltage should be continuously maintained for 3 h stability. All charging time is approximately 45-65 h.In the case of 100%, the general charging time will be 8 ~ 10 hours, do not exceed 12 hours (affect the battery life), not recommended to use electricity each time, generally recommended electricity Charging at around 70%, at this time, the charging time is generally 6-8 hours. When the electricity consumption per day is 10%, it can be charged once a week. When the electricity consumption per day is 20%, it can be charged three days. When the electricity consumption per day is 30%, it can be charged once a day. When the electricity consumption per day is over 40%, it can be charged once a day, and the charging time is controlled, generally around 6 hours.
Charging method commonly used in lead-acid battery
1, pulse charging
This is a simple and economical approach, the low-voltage AC rectification of the transformer secondary output into pulsating DC (not filtered) to charging the battery. This method is large, the charging current is fast, the disadvantage is that when the grid voltage fluctuates, charging The current also fluctuates. It is easy to occur due to large charging current, high temperature rise, and large electrolyte loss, resulting in damage to battery damage, so this method is rare to maintain the sealing lead-acid battery.
2, charging with constant current
In order to prevent the temperature rise in the battery and the loss of the electrolyte is too large, the charging current is adjusted to be relatively small, and the time to charge is longer. On the other hand, the charging time is too long, it will overtake, in order to prevent over charge Damage to the battery, you need to have an overcharge or timing circuit.
3, constant pressure charging
The theoretical and practices have proven that when the charging voltage is lower than the upper limit of the charging voltage is safe, even if the charging time is long, it is not dangerous. If necessary, the battery can work in a floating state.
Lead-acid battery charging step
1, cleaning, battery external charge, electrode pillar, unscrew the hedging hole cover, open the vent hole.
2. In the electrolyte of the electrolyte of the specific weight 1.28, the liquid level should be maintained as the polar plate 10-15 mm.
3, the lead-acid battery after adult electrolyte, resigned for 6 hours, so that the electrolyte is soaked.
4, charging is divided into two phases: a stage. The charging current is 78% of the 78% of the charge to the lead-acid battery voltage rose to 2.4 volts, and the bubble time begins to generate bubble time for 26-30 hours. In the second stage, the charging current is half, the charging time is 22 a 30 hour, and the charging is over, the single-pole lead-acid battery voltage is 2.5 a 2.75 volts. The charging 2 is boiling in 200 hours, and the voltage and electrolytic solution are maintained. constant.
5. After charging, 2-3 charge and discharge processing. When discharging, the resistor is applied, and the discharge battery is 10% of the electric capacitor, and when the discharge voltage drops to 1.7 volts, charging it according to the above charging method. Such repeated, allowing it to reach more than 80%.
6, charging is finally, adjusting the specific gravity of each monobiic electrolyte makes it equal, such as low reduction, replenishing the electrolyte to a predetermined height. In charging, if it is more than 45 ¡ã C, the charging current should be reduced, and the temperature continues to rise over 55 ¡ã C to suspend charging. Removal to 3590 or less.
Be
Lead-acid battery charging consideration
1, do not inferior charger
Inferior charger voltage and current are unstable, the heat dissipation is poor, often use not only damage to the battery, but also a fire.
2, don't replace the charger freely
The charger parameters of different electric vehicles are basically different. Do not replace the charger or the charger of others without understanding the charger.
3, do not let the charger have been bumpy
Generally, the charger is very small, mostly in the process of riding, so the charger is not strongly vibrating, so the charger is generally not placed in the trunk of the electric bicycle and the basket. The charger can be packaged with foam plastic to prevent vibration and bumps.
4, develop the habit of charging daily
It is recommended that you charge every day, the life of the battery will be extended. If it is often not fully filled, the battery will produce a "memory", affecting its continuation mileage, while also loss battery life.
5, each time you have to charge
After the charger changes in the indicator, the surface is preferably full of electricity, actually the battery is not full. It will form an under charge accumulation for a long time, so it is necessary to continue to charge for a while after the battery is filled, and the battery can be prevented from vulcanizing.
6, regularly discharge
Riding to the first undervoltage protection under normal load of flat pavement, completely charge the battery after completion of complete discharge. The battery regularly conducts a complete discharge is also conducive to the 'activation' battery, which can slightly increase the capacity of the battery.
7, pay attention to the environment of charging
The best ambient temperature is 25 ¡ã C, winter or summer charging, there will be excessive or incarnation, so it is generally arranged in an environment with ventilation and room temperature of 25 ¡ã C.
8, do not let the battery high temperature
Don't put the electric car in the sun. Environmentally high temperature increases the internal pressure of the battery, but the battery limiting valve is forced to open, and the direct consequence is to increase the water loss of the battery. The battery is excessive induced to cause a decrease in battery bottles, and the accelerator plate is softened, and the housing heat, the housing drum, and deformation occurs.
9, develop good power saving habits
When you have a red light or go downhill, you can reduce the brakes to reduce the brakes as much as possible. When starting, slowly turn the transfer to avoid high currents to the battery's impact, and can reduce the battery's power loss and life injury.
10, first insert the battery box plug and then insert the power supply
Because the battery charging current is large, if the charger completes the start-up state when the AC is inserted, this will produce a large surge impact current when inserting a battery, and excessive impact current is easily damaged, and the battery The service life has an effect. Instead, give the charger soft boot process so that the charging current will have a delay gradient rise start process, which is advantageous for the protection equipm Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
