The principle of battery loss and corresponding processing method analysis

　　Author ：Iflowpower – Portable Power Station Supplier

I. Bottery loss, the original (1) electric eye black (the electric eye is instantaneous when the battery is swayed): the specific weight of the electrolyte is insufficient, and the deep discharge is caused by the battery loss (on the current measuring instrument, it is also unable to test the electric eye. The black battery is not good, it can be checked after being filled.

AC electric charges normal current charging 24 hours to enrich the electric eye (someone determines the battery is broken. If the battery is broken, the battery stops the chemical reaction, and cannot continue to discharge it to the electric eye, so this proposition is not established). (2) There are two cases of green eyes: A.

Open circuit voltage is also over 12.5V, instantaneous discharge 10.5V or more, battery normally.

B, the open circuit voltage is 10V, instantaneous discharge 8-0 should be battery-break (product quality issues) (3) Electroplad white: Vehicle charging system failure causes the charging voltage or current too long to cause electrolyte loss of water (addition Distilled water). Special reminder (1) Poophobulent phenomenon: short-term charging (no green), immediately load the vehicle, but the vehicle can be started, but the turns is not allowed to do it, the original is short-time charging is not Add the battery base (the specific gravity of the electrolyte does not meet the standard), just a floating voltage, so it gives people a battery that does not stamp electricity. (2) Deep discharge battery (electric eye black) is placed in two years, which will cause the battery vulcanization, and the vehicle should be charged in time, placed in full power, and remove the positive connection with the vehicle.

Second, the battery loss is reversible, and the chemical reaction formula of the discharge and charging of the battery is as follows: PBO2 + PB + 2H2S04→PBSO4 + 2H20 (discharge) PBSO42H20→In the case of normal use, the PBO2 + PB + 2H2SO4 (charging) battery is in normal use, the active material (Pb02, and Pb) of the positive and negative plates (PB02, and PB) are converted to small grain-shaped sulfate, these soft small grain-shaped sulfate is average Distributed on porous active substances, easy and electrolyte in contact with the electrolyte in contact with the original substance PBO2 and PB during charging. If the use of improper maintenance, the small particle crystalline sulfate cannot be transformed into the active material in time, gradually forming a crystalline particle thickness, forming a plate vulcanization phenomenon, is a phenomenon of generating white hard sulfate. Crystallization, the charging is also very difficult to convert the lead of the lead in the active substance, these coarsely and hard sulfate crystals are large, poor conductivity, and thus block the pores of the plate active substance, hinder the permeation and diffusion of the electrolyte, The internal resistance of the battery is added, and when charging, the lead of sulfate is less likely to transform to PBO2, and PB when charging is less likely to transform.

If it is too long, these coarsely and hard sulfate will lose reversible use. As a result, the effective substance of the plate is reduced, the discharge capacity is lowered, and the service life is greatly shortened. The battery loss is actually referring to the phenomenon of phenomenon in the electrode's lead-on-the-electrode is unable to transform into active substances.

The battery is sulfuricated after sulfating sulfuric acid, there is a few phenomena: (1) The battery has risen quickly during the charging process, its initial period and the final voltage are too high, the final charging voltage can reach 2.90V / single. (2) During the discharge process, the voltage is lowered, that is, premature falling to the termination voltage, the capacity is significantly reduced by other batteries.

(3) When charging, the temperature of the electrolyte rises quickly, easy to exceed 45 ¡ã C. (4) When charging, the electrolyte density is below normal, and the air bubbles are prematurely when charging. (5) When the battery is anatomy, the color and state of the plate can be found abnormal.

The positive electrode plate is light brown (normal dark brown), the surface of the polar plate has a white sulfate spot, the negative plate is rough, and the surface is rough, and the touch is like a feeling of sand, and the plate is hard. (6) Severe sulfuric acid salt, the lead-white crystals formed by the plate formed, and in general, the active substance cannot be restored. Third, the routine judgment of the maintenance battery loss 1, the battery-opening voltage is lower than 12.

3V, the loss of loss is generally divided into: a) slight loss: open circuit voltage is 11.7V ~ 12.3V.

b) Medium loss: open circuit voltage is 10V ~ 11.7V. (Mild Vulcanization) C) Serious Loss: The open circuit voltage is lower than 10V.

(Moderate and severe vulcanization) 2, battery capacity state display (electro-eye) displayed in white. Fourth, the supplementary electricity method and the requirements are based on the charging machine output mode and the loss of the battery in the following three charging methods: 1, constant pressure charging: with constant pressure 16V6-QW-68An battery limit 17A6- QW-90N battery limit 22A charge 4 ~ 12 hours. Charging time depending on the degree of loss of battery capacity.

This charging method is suitable for a slight loss battery. 2, staged constant current charging: Section 1: 6-QW-68 battery is charged to the next stage after the voltage is charged to the voltage to 14.4V by constant current 7A.

The 6-QW-90 battery is charged to the voltage after the voltage is charged to the voltage to 14.4V. Section 2: 6-QW-68 battery charges 6 to 20 hours with constant current 3.

5a. 6-QW-90 battery charges for 6 to 20 hours with constant current 4.5a.

The actual charging time is dependent on the extent of battery loss. This charging method is suitable for medium-loss batteries. 3, constant current small current charging 6-QW-68 battery charges 20 ~ 40 hours with constant current 3A.

6-QW-90 battery charges 20 to 40 hours with constant current 4A. Actual charging time is dependent on the degree of loss of the capacity. This charging method is suitable for battery-resistant batteries.

4. 5, judgment of charging end 1) The battery voltage is greater than 16V and stable for 3 hours without changing. 2) Battery capacity display (electric eye) presenting green does not change.

3) When necessary, rotate the electropament, measure the electrolyte density by 1.28 g / cm3 or more and stable unchanged with a densitometer. If the above 3 points, the statement has been completed, and the charging battery is stopped to restore normal use.