Why won't the battery charge
Recently, the boss reported that their electric car battery was scrapped, but the electric car was just bought, but left it for a month without control, and the scrapped battery could not be charged directly. I believe that many friends have encountered similar problems on this day, and the editor will answer below. our question.
1. What's wrong with the battery not charging?
In fact, the above situation is because the battery is not charged for a long time, and the battery board is attacked by the irreversible sulfate alkalinization phenomenon, which causes the battery to have problems. The important properties of the sulfuric acid board are: the voltage rises rapidly during charging, the gas is precipitated prematurely, and the temperature rises rapidly; when discharging, the voltage drops rapidly and the capacity is small.
2. Reasons for irreversible sulfation of battery panels
1. The storage time is too long, the battery self-discharge rate is high, and the battery will not be charged without maintenance.
2. Continuous overdischarge or frequent overdischarge or low current deep discharge.
3. After over-discharge, the power supply will not be restored within 24 hours.
4. Overcharge or often undercharge.
5. The battery works with high current without charging.
6. Too high or too low ambient temperature will affect the function of the battery. For example, as the temperature increases, the salinization rate doubles for every 10 degrees added.
7. Short electrolytes. Due to excessive transpiration or accidental leakage of electrolyte without timely replenishment, the liquid level is too low, and the liquid level is exposed on the plate for a long time, forming a sulfate upper plate.
3. The battery should be placed carefully
The battery will starve to death without food for a long time. We should pay attention to the maintenance of the battery in our daily life. After the electric vehicle is placed for more than a week, attention should be paid to the charging and discharging of the battery. At the same time, it is also necessary to prevent the occurrence of the above-mentioned situations.
Finally, the editor reminds everyone again that electric vehicles should not be placed after the battery is fully charged for a long time. It is strictly forbidden to store for a long time in the state of power off.
