The combination of the battery is divided into a pole plate, a partition, a dilute sulfuric acid, and the battery electrode plate active substance is neutralized, porous metal lead, respectively. In long-term, the battery continuously charges and discharges, the polar active material performs an oxidative reaction, the volume changes, expansion, contraction repeatedly, the active material gradually becomes soft, especially the positive electrode plate is more obvious, and should be considered normal. It is an abnormal phenomenon that there is an early active substance to fall off. Its characteristics are: the capacity is lowered, the temperature rise is high, the electrolyte is turbid, and the gas is large. The reasons why the active material is released:1. The charging current is too large, the time is too long, and the temperature is too high to produce a large amount of hydrogen, oxygen, and excessively punched active substance.
2, often over-discharge, generate a large amount of sulfate, excessively expanded, and the binding force is lowered.
3, the electrolytic liquid density is low, the cold season electrolyte is frozen, the active substance is broken, and the binding force is lost.
4, the electrolytic liquid density is large, the corrosive is large, the active material mechanical strength is reduced, and the internal short circuit is equal.
5, often overcharge, excessive oxidation, loose active substance, rolling, and loss of active substance.
6, often charged at high temperatures, the positive electrode active substance forms a mud softening, easy to fall off.
7, long-term large current charging, discharge, polar plate generating curvature, active material adhesion ability, easy to fall off.
8. The battery is excessively vibrating on the vehicle equipment, causing falling off.
9, impurities enter the battery, alkaline substance can cause negative poor metal lead expansion and fall off.
10. Due to the problem of manufacturing quality, the grid is inaccurate with the active substance, and a large amount of active material block is lifted.
It is judged whether the active substance is detached, and the capacity is discharged, the capacity is less than 80%, indicating that the quality of the active material is insufficient.
The current status of the active material falling off on an anatomical examination is:
1. A large amount of precipitate is silly, and the plate is exposed to the plate grid strip, and there are a large number of lead bars on both sides of the polar plate, electrolyte erosion, and iron blue.
2. The precipitate color is grayish brown, indicating that iron, copper debris; precipitate light blue or grayish white, indicating that the electrolyte density in the battery is high.
3. The precipitate is a paste, indicating that the battery has a temperature rise; it is a block, and it will be described in the manufacture of congenital factors. 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
