Author ：Iflowpower – Portable Power Station Supplier
1. Battery leakage, a common leakage: First, the upper cover and the bottom tank are sealed or caused by collision, sealing glue cracking, and the second is the safety valve iodary acid leakage; the three terminals are iodal acid leakage; four other parts Decamine leakage. Check and processing method: first make an appearance check, find the queous leakage site.
Once the cover is removed to view the safety valve with an oxygen-proof leakage traces, then open the safety valve to check the inside of the battery with a flowless electrolyte. After completing the above work, if an abnormality was not found, it was observed that the battery had no bubbles appeared and appeared, and there was a bubble, and there was a bubble. Finally, during the charging process, it is observed that there is no flowable electrolyte, if there is an explanation is the cause of the production.
During the charging process, there is a flowing electrolyte to take it. 2. The deformation failure phenomenon is not burst, often has a process.
The battery enters high voltage charging regions around 80% of the charge to capacity. At this time, the oxygen is precipitated in the positive electrode, and the oxygen passes through the holes in the partition. Oxygen resurrection reaction on the negative plate: 2Pb + O2 = 2PBO + H2O + QPBO + H2SO4 = PBSO4 + H2O + Q reacts heat, when the charging capacity reaches 90%, the rate of oxygen increases, and the negative electrode begins.
Hydrogen. The new increase in a large amount of gas is that the battery internal pressure exceeds the valve pressure, the safety valve is opened, and the gas escapes, and finally it is lost. With the addition of the battery cycle, the water storage is gradually reduced, and the battery is as follows: (1) The oxygen passage becomes smooth, and the oxygen appearing in the positive electrode is easy to reach the negative electrode through the channel.
(2) The heat capacity is reduced, and the maximum heat storage is water. After the water loss, the battery heat capacity is greatly reduced, and the heat that occurs makes the battery temperature rise very quickly. (3) Due to the contraction of ultrafine glass fiber separators in the battery after lossless, it is deteriorated with the adhesion of the positive and negative plate, and the internal resistance is large, and the charge and discharge process is increased.
After the above process, the heat inside the battery can only be dissipated by the battery tank. If the heat dissipation is less than the heat generation, the temperature rise is increased, so that the electric storage gas is lowered, the quantity is increased, and the positive electrode is passed through the channel, and the negative surface is reacted, and a large amount of heat is rapidly increased. Forming a malignant cycle causes thermal out of control, deformation.
Fault inspection and processing a set of batteries (3) simultaneously deformed, first voltage check. If the voltage is substantially normal. It should also be measured whether a single voltage determination is shorted, and there is no short circuit, the deformation is caused by heat-failing.
Attention should be heard the charging parameters of the charger. The voltage is high in V or the high-voltage or trickle conversion current is low, and the charger is required to replace the charger. 3.
Short-circuit fault phenomenon of battery voltage drop 2 integer times fault checks and processing multimeter detects battery single voltage, short circuit battery scrap 4. The discontinuation of the fault phenomenon is charged, and the inspection and processing of the electricity failure can be used to detect the battery voltage. If it is 0, there is no spark of fire, and the charge is not advanced.
Broken battery scrap 5. The inverse fault phenomenon detects that the battery voltage detection of the battery voltage and processes the battery to discharge the battery to 0 volts, and then fully charge the battery 6 with maintenance charger. Inverse sulfate 1, fault phenomenon plate sulfate is a common fault of batteries, and many battery failures are also due to this failure.
The important manifestation of the plate sulfate is: the voltage is raised soon, and the temperature is rapid, the temperature is fast, and the capacity is small when the discharge is low. 2. The test and handling of the polar can be attributed as follows: (1) The storage time is too long, the self-discharge rate is high, and the charging is not performed.
(2) Recharge it in time after discharge. (3) Long time is under the state of charge. (4) Over-discharge.
(5) Dry or added electrolyte concentration. When the battery is inversely reversible sulfate, it should be repaired according to the degree of weight. The salinity is lighter, and the average activation charging (ie, balanced charging) can return to normal.
The specific method is as follows: Constant voltage limit charging: The first stage 0.18C2A charges to 2.7V / single charging 12-24 hours.
The first stage of constant current: 0.18C2A is charged to 2.4V / single, the second stage: 0.
05c2a charge 5-12 hours. Salterization, it is necessary to charge the hydraulic charge and discharge, to return to normal. The specific method is: first adding the battery to the low water or density of 1.
05 g / cm3 dilute sulfuric acid to the rich liquid, and then charge the current of 0.05-0.018c2a for about 20 hours, and exhaust flow fluid, and then make capacity test.
Repeat the above operation until the battery capacity is restored. Sign in. One is only behind 1, the balance of the tandem storage battery group is a world-oriented problem, and there is a backward battery in the process of use.
The reason is a variety of diverse, production reasons, and the causes of raw materials, etc. 2, the failure check and processing first make the battery to be charged, then discharged with 2 hour rate current. The voltage of the battery is constantly measured during the discharge process, and the backward battery of the discharge capacity is selected.
First, add 1.050 dilute sulfate to just see the flow electrolyte, then continue charging 12-15 hours. Pay attention to the temperature of the battery not more than 50 ¡ã C when charging.
After the charging is over, stand for 0.5-4 hours, re-use 2 hour rate discharge. During the discharge process, the value of single voltage is measured.
If the discharge time does not reach the standard or single voltage to 1.6V, the discharge time differs from the normal single-finished battery (the factory is 5 minutes, 6 months, 6 months Due to more than 8 minutes, 9 months differs more than 10 minutes, 13 months difference in 15 minutes), then repeat the above-mentioned charge and discharge program operation until it meets the requirements. If it is repeated charge and discharge cycle, the battery capacity has no significant increase or still odd from about 0V.
This battery is generally short-circuited, or the active material is severely detached softened, severe irreversible sulfate, etc., cannot be repaired, should be scrapped. Battery that meets the requirements can continue to be used, but should be exhausted under a constant voltage 15V / only charge conditions, clean the surface of the battery, an on the cap valve, and use a PVC (or chloroform) adhesive Panel bonding.
8. The electrolytic solution of the active substance falls off, the electrolytic solution of the battery is turbid with a reddish brown fault, and whether the battery capacity is normal, and the capacity is insufficient. The new battery voltage drops fast 1.
The fault phenomenon new battery is loaded, and the voltage drop is fast. 2, the fault check and handling inspection meter display voltage is consistent with battery capacity. When the voltage displayed by the instrument does not meet the above table, the manufacturer should be adjusted.
Check if the battery cable is reliable, there is short circuit and connection unreliable, etc. Have it excluded. Check if the electric vehicle starts and the operating current is too large, if it is too large (the start current is above 15A, the current 6A is over 6A) should adjust the controller limit value or check the motor.
Check if the battery capacity is low, if it is low, it should charge and discharge the battery. 10. The battery is charged 1, the fault phenomenon first checks whether the connection of the charging circuit is reliable, check whether the connection between the connection and the plug is intact, carefully check if the socket and the plug has a fire arc, there is a wire loss, the wound line, etc.
Check if the charger is damaged, the charging parameter meets the requirements: that is, the initial charging current reaches 1.6-2.5A / only; the highest charging voltage reaches 14.
8-14.9V / only, the charging floating charge conversion current is 0.3-0.
4A / only, floating The charging pressure reaches 14.0-14.4V / only.
Check if there is a dry phenomenon within the battery, that is, the battery is seriously lacking. It should also be checked whether there is irreversible sulfate. The non-reversible sulfate of the plate can determine the change of its end voltage by charge and discharge.
At the time of charging, the voltage of the battery is very fast, some single-handed voltage is particularly high, exceeding normal value; the voltage drop is particularly fast, the battery is not stall or stall. In the above case, it can be determined that the battery has irreversible sulfate. 2.
The test and processing of the fault will first connect the charging circuit, and the charger should be replaced. The dry battery should add pure water or 1.050 sulfuric acid to maintain charging, discharge recovery battery capacity.
If it is found that there is irreversible sulfate, equalization charging recovery capacity should be performed. The maintenance of the dry battery is charged, which should control the maximum current 1.8A, charge 10-15 hours, three batteries are in 13.
4V / month. If the voltage difference between the battery exceeds 0.3V, it will illustrate an irreversible sulfate that is not synchronized.
About the battery of the inverse sulfate, to replace the whole set of batteries or activate the battery.
Copyright © 2023 iFlowpower - Guangzhou Quanqiuhui Network Technique Co., Ltd.