1. The discharge capacity of the lead battery is lowered; the end voltage is faster, and the electrolyte density is lower than the normal value. When using high-rate discharge gauge test, single-point voltage drop. The capacity is obvious, the start performance is lowered, and the startup uses or two operations. Charging performance decreases, the electrolytic fluid temperature rise is too fast, the single battery voltage can reach 2.8 ~ 2.9V. Because the battery is vulcanized, the lead bubbles appear earlier during the charging of the battery, even when the battery is charged, even when charging is charged; the electrolyte density does not reach the specified standard. The electrolytic solution density is lower than the normal value, and it is low in long-term. During the charging process, the battery is too high in the initial and final voltage, up to 2.7 V. After the plate is vulcanized, the battery internal resistance increases, and the electrolytic liquid temperature is raised during charging, easy to over 45 ¡ã C. The polar color is not normal, the positive plate is light brown (sometimes white), the negative plate is grayish. Sometimes open the plug cover, you can see the frost on the plate. The voltage drop rate at the time of lead storage battery is too fast (when using low discharge rate), it can be reduced to 1.8 V, which is too early to terminate. When anatomical battery is dissected, it can be found that the surface of the negative plate is rough, and there is a feeling of sand at the time of touch; positive, the negative plate surface is hard to grain. The sulfate is severe, and the lead white crystals formed on the plates formed are thick, and in general, it cannot restore the lead or sponge lead.2. Prevent the strikes of the battery, and the vulcanization of the battery should be prevented. Active measures are taken according to the objective law of polar vulcanization to avoid vulcanization.
(1) According to the changes in the season and region, the electrolyte density is correctly selected, and the liquid level is maintained from 10 to 15 mm. When the liquid level is lowered, if not leakage, the distilled water should be supplemented, which is not added to the electrolyte, otherwise the electrolyte density will be more and more, not only easily vulcanized, but will increase the corrosion and damage of the plate and the separator. .
(2) If the storage time of the battery is more than 1 month, it should be charged once a month. When the battery is found to be mildly vulcanized, the battery should be charged and discharged to the battery.
(3) The battery should often be sufficiently contained, but the discharge is discharged, and the discharge is quickly charged. Regardless of the normal operation of the charging system, it is found that the failure of the generator and the regulator is discovered and immediately eliminates the root cause of vulcanization. Regularly supplement charging.
(4) Avoid discharge at low temperatures. When the cold machine is started in the case of winter or low temperature, each time the startup time should not exceed 5 s to avoid low temperature high current discharge. In northern my country and some alpine mountains, the temperature is less than -30 ¡ã C should pay more attention to this.
3. Governing method When the polar plate of the lead battery is not reversed, it can be treated separately according to the degree of sulfate hardness of the plates.
(1)“Water therapy”Water treatment method for a critical vulcanization: The battery is then discharged at a 10 h rate of discharge current discharge, and then pour the electrolytic solution in the battery, then add distilled water to 1 ~ 2 h. Then charge the current with a 20H rate to charge the current, after the electrolyte density is 1.120 g / cm3, the charging current is reduced to 1/5 of the charging current to continue charging, until the surface is uniformly aggressive, and the electrolyte density is no longer rising. You can stop charging. Then, at a 1/5 discharge of the current at a 10 h rate, it is repeatedly charged multiple times until the total plate is normal, and the electrolyte density can be delivered to the predetermined value. If the plate is seriously vulcanized, the elimination of vulcanization time is sometimes maintained for 3 to 4 weeks.
(2) Small current charging method When the lead battery is not too serious, the small current can be used, that is, half of the electricity of the charging current value of the second stage, which is charged to the voltage. And the density of the electrolyte reaches the specified standard (the charging current is small, the voltage is low), and the electrolyte density and the liquid level can be used. Dilution electrolyte is added to the battery to add the electrolytic solution to the surface of the liquid level 20 mm. Then, charging the current with 2 h rate, charge the foam, the voltage of the single battery is above 2.5V, stop charging 0.5h, so that the electrolyte diffuses uniform; then the V4 of the charging current continues to charge, until a lot of air bubbles Extended, stop charging for 0.5h. This is repeated multiple times, namely: charging—Stop—Recharge—Stopping, generally continue to reach a few days, until the electrolyte reaches the specified normal value, and stably unchanged. Sometimes individual lead storage batteries, since the density of the sulfuric acid electrolytic solution is too high, and the time is too long, such lead storage batteries are particularly severe, and the effective material of the plate is not easy to recover, even after treatment Although there is an effect, it is difficult to return to the original discharge capacity, and the service life is also short.
(3) When the charge method is lighter, the current is continuously charged with a normal charging rate, and the voltage and electrolyte density reaches the maximum, and then continues to charge. The end voltage and electrolyte density of the battery are measured every 0.5h, which is not changed in 2 hours, which is the same as the record value of 4 consecutive times. When charging, there is bubble in 10 min, and it can be considered that it has been processed.
(4) Treatment of severe vulcanization of severe vulcanization treatment is time consuming, because the battery electrolyte is dried, and the sulfuric acid has been used to form sulfate, but as long as the method is appropriate or handled. First unpack the battery check polar appearance, understand the use of the battery, the degree of strongness of the active substance of the depestne, decided. The treatment method is: use a 10% aqueous solution of sodium sulfate, or injecting aqueous solution of potassium carbonate (0.1% ~ 0.5%). 1/20 of the rated current of the C20 charge machine (the charging current can also be small) continuous charging 70 ~ 80h. Then, the electrolyte is then rinsed, rinsed with distilled water, then add the electrolyte of 1.40 g / cm3, adjust the electrolyte density to reach the predetermined value. After a normal charge L, after discharge, the balance charging method is fully charged, the power storage capacity can generally return to about 90% of the rated capacity, that is, the processing is completed. After the plate is evacuated, the electrolytic solution is replaced, so that the density meets the specified value, it can be used. If the polar is serious, the time required may have a long time, sometimes it is still not necessarily completely restored to the original situation, in which case the plate is scrappe 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
