Reasons for abnormal damage and charging concept
Overcharging can cause damage to the battery’s positive plate. Generally, the positive plate fracture is at the upper root. Under the condition of overcharge, the atomic oxygen corrosion on the surface of the plate directly causes the lower connection strength of the plate to be unabated. This also shows that it is caused by the uneven distribution of excessive charging current.
There is no electricity on the charged plate, which is also a concept that will be misunderstood by everyone. If the battery plate after charging is energized, it will be short-circuited by the acid electrolyte, so there is no electricity inside the battery, and there is only chemical energy.
Electrical energy is converted into chemical energy during charging. If the form of this energy is not completed in the conversion battery, it will be overcharged, and the flow of battery power will accelerate the damage of the battery. Therefore, do not think that charging the battery, there must be electricity in the battery.
Avoid hardware requirements for overcharging
The charger should have a three-level charging function
The battery current of the AGV trolley should conform to the current receiving frequency of the tracking static battery. Its basic procedure is automatic conversion in three stages, high current constant current, gassing voltage, constant voltage, and small current constant current.
should be installed on the motor car
If the ammeter is not installed on the battery locomotive, the user actually does not know the capacity consumed by the locomotive to complete the task, so it cannot be performed according to the actual state of the battery during the charging process. Users can only use overcharge to protect battery capacity.
The data safety limit can be determined by detecting the data according to the actual time of the chronometer. Under deep discharge conditions, the plate expansion and contraction of the battery will be large, and the physical structure of the plate is also easily damaged. The lower limit of the battery should be kept at 20% of the capacity. When the battery is used properly, the battery capacity cannot be discharged. The conditions of use of different mines are also different, and the slope, the specified number of tractions, and the number of times of operation are different. Therefore, the safety margins of the mines are also very different.
A reasonable safe use limit is that the capacity of 20% plus traction discharge is equal to the battery use standard of the battery, and the battery with Cmin lower than the capacity Cmin cannot be boarded. The important task of the battery team is to pick out the battery with a capacity lower than Cmin and replace it with a qualified product.
Corrosion protection should be applied to the positive electrode of the battery.
When the new battery is used, a positive electrode protectant should be added, which can effectively reduce the amount of oxygen evolution during charging, thereby reducing the corrosion of the positive grid by charging. According to the Kunshan Ye Mao electromechanical test, the battery life of the positive electrode protector can be increased by 50%.