Troubleshooting methods for Battery Faults and Accidents (DC panel)
1. Replace the acid proof battery if its internal plate is short or open. 2. For acid proof batteries in floating charge operation mode for a long time, white lead sulfate crystals will gradually be produced on the surface of the plate, which is usually called "vulcanization"; Treatment method: the battery out of operation, the first I10 current constant current charging, when the monomer voltage rose to 2.5V, stop charging 0.5h, and then use 0.5I10 current charging to emit strong bubbles, then stop 0.5H to continue charging, until the electrolyte "boiling"; Monomer voltage up to 2.7 ~ 2.8 V, stop charging 1 ~ 2 h, and then used for constant current I10 exile, when any one monomer battery voltage drops to 1.8 V, the termination of the discharge, and let stand for 1 ~ 2 h, then use the charging program for charging and discharging, repeated several times, the lead sulfate crystals on the plate will disappear and battery capacity will be restored. 3. There is too much sediment at the bottom of the acid proof battery. Use a pipette to remove the sediment and supplement the standard electrolyte. 4. Acid proof battery plate bending, cracking, deformation, if the verified charging and discharging capacity still does not reach more than 80%, the battery should be replaced. 5. The insulation of acid proof battery is reduced. When the insulation resistance value is lower than the field requirements, a grounding signal will be sent, and the positive or negative ground voltage can be measured, the battery shell and insulation support should be wiped with alcohol to improve the ventilation conditions of the battery room, reduce humidity, and the insulation will be improved.
(2) Valve control seal lead-acid battery failure and treatment
1. Valve controlled seal lead-acid battery shell deformation, generally caused by charging current is too large, charging voltage exceeds 2.4V×N, internal short circuit or partial discharge, temperature rise exceeds the standard, safety valve action failure caused by internal pressure rise. The treatment method is to reduce the charging current, reduce the charging voltage, check whether the safety valve is blocked. 2. In operation, the floating charging voltage is normal, but a discharge, the voltage soon drops to the termination voltage value, the general reason is that the internal water loss of the battery dries up, electrolytic material deterioration, treatment method is to replace the battery.
(3) Cadmium nickel battery failure and treatment
The capacity of cadmium-nickel battery decreases and the discharge voltage is low. The treatment method is to replace the electrolyte, replace the battery that can not be repaired, after 5h charging with I5 current, reduce the charging current to 0.5I5 current, continue to charge (3-4)h, stop charging (1-2)h, discharge with I5 to terminate the voltage, and then charge and discharge the above method, repeated (3-5) times, its capacity will be restored. If the capacity still cannot be restored, replace the battery.