Reasonable charging of Toyota forklift battery not only improves efficiency, but also prolongs the service life of the batteries. In practical applications, constant current charging and constant voltage charging are two common charging methods.
Why is correct charging important?
Improper charging method may lead to the decrease of battery capacity, electrolyte depletion, abnormal temperature, and even shorten the battery life.
Especially for lead-acid batteries and lithium batteries, different charging stages may cause overcharging, bulging and other problems if not matched with the right way. Reasonable charging not only ensures the working time, but also reduces the maintenance cost.
Constant current for charging
In the charging process, as the battery forklift battery charging time grows, the battery forklift battery voltage will rise and cause the current to fall.
In order to keep the battery in the charging process of the current fixed, in the charging process needs to be gradually increase the current and voltage. Constant current on the battery equipment requirements are also higher, in maintaining the stability of the current can be realized under the battery charging time is shortened.
Constant voltage to charge the battery
Forklift battery in the charging of the initial voltage is higher, with the charging time lengthening, the current voltage began to increase, the battery voltage is smaller until the balance with the current voltage. The constant voltage charging method can effectively avoid the loss of electrical energy caused by excessive current.
Battery constant current charging is divided into initial charging and supplemental charging.
① Initial charging that is, the first time for the new battery charging, charging first fill the density of 1.28g/cm3 electrolyte, static 4-6h, and then selected by the first stage of the rated capacity value of 1/15, the second stage is half of the rated capacity value of 1/30 as the charging current.
The second stage is half of the first stage, i.e. 1/30 of the rated capacity value, as the charging current, connect the positive pole of the charger and the battery with the positive pole and the negative pole with the negative pole, and turn on the power of the charger, then charging can be carried out. The charging time of initial charging is about 45 -65h.
② Supplementary charging refers to the timely supplementary charging of the battery due to the insufficiency of power in use. The choice of charging current is: the first stage is 1/10 of the rated capacity value of the battery, the second stage is half of the first stage, 1/20 of the rated capacity value, and the supplementary charging time is about 13-16h.
The advantage of the constant current charging method is that the charging current is small, which can reduce the shedding of the battery active material and also ensure that the battery is completely fully charged, so it is widely used, and the disadvantage is that the charging current needs to be adjusted frequently.