Author ：Iflowpower – Portable Power Station Supplier
Electric cars are now a very common means of transportation, electric car as the name is power-driven, this electrical energy is of course battery supply. 1. Why should the battery need to be supplemented before using it? A: The battery is from the factory to use, and it is generally taken from 1-2 months, or even longer.
During the storage of self-discharged from the self-discharge, the battery is consumed due to spontaneous reactions during storage, and the rated capacity value is not reached. Before using the first time, it is best to supplement charging, so as not to mistake customers, it is not enough. 2, electric cars should be processed for a long time if you want to store longer? A: First, the battery should be fully charged, and should be charged at least once in a month, prevent loss of loss, can effectively prevent crystalline production causes irreversible salibers and crystal short circuits.
3, do you want to put it first before charging? A: The lead-acid battery is different from other secondary batteries, which has no memory effect, so regardless of the charge of the battery, it can be directly charged, no discharge. 4 A: Due to the discharge, the number of cycles will increase significantly. Therefore, according to this theory, diligent charger is beneficial to circulatory life, but in terms of a large amount of circulators used in the market, the charger has high fault rate, poor reliability, accuracy due to price factors and technical levels, etc.
Low defect. Therefore, sometimes the charge of the battery will affect the battery life. The battery is radiated, and the number of charging is reduced, but due to the discharge of the unit, there may be a difference between the general battery, which can cause certain monone-discharge, and the over-discharge receiving capacity will be greatly reduced, causing insufficient charging failure, and Due to the removal of electricity, the charger is longer, and the charger is easy to damage the charger.
Therefore, in the above, we believe that the battery is less than 50-70% of the battery is relatively reasonable, and the use of the battery is good. 5 A: Over-charge, that is, the battery charging current is greater than the battery acceptance current, and the portion is overcharged. It is important that the charge is important.
Since the electrolytic water, the battery is transferred to an oxygen complex reaction, heat Therefore, the actual conversion of overcharges into heat to increase the temperature of the battery. If it is not controlled, it will cause a large amount of loss of water, and the severely caused the heat loss capacity, and even modifications. Under the case of unsettled electricity, it is often in the case of insufficient charging, and it will gradually form a thick hard, sulfate, which is almost not dissolved, that is, so-called irreveneable sulfate, use ordinary methods cannot be used.
Advance, so the capacity will be rapidly attenuated once a time. 6, what harmful to the battery? The battery is gradually converted into a very large PBSO4 in the discharge process, and the sulfuric acid in the electrolyte is consumed, and the internal resistance is gradually increased. Therefore, when the discharge, in particular, in large current over-discharge A large amount of calories, and the amount of sulfuric acid has little sulfuric acid, the concentration of sulfuric acid is low, and the PBSO4 solubility has increased significantly, and therefore it is easy to form a thick and hard PBSO4 crystal, ie irreversible sulfate.
Attenns the charging acceptance of the battery, the harm is particularly large. 7. In the case of electric car batteries, it is necessary to maintain charging.
How about charging parameters, how to maintain maintenance? A: The electric vehicle battery is maintained at one of the following cases: (1) The battery capacity attenuation is too fast; (2) There is a backward battery; (3) After the battery is abandoned, the liquid is rehydrated; (4) Battery for a long time After; (5) After the battery is severely over-discharge; (6) battery long time is in a low temperature environment, etc .; (7) The charging parameter is unreasonable to charge long-term charging; how to maintain charging charging parameters; generally use constant voltage limit Charging or multi-stage constant current charging. In the middle of the charging, the parameters of the car with the vehicle are basically consistent, but the charging highest voltage is increased to higher during the period of charging.
That is, WD charging, depth charging repair has been behind battery. Maintenance charging is also called equalization charging. 8.
What is the relationship between the battery initial capacity size and life? A: The battery capacity is affected by active substances and utilization. The electric booster battery is dimensioned, and the mass of the plate has been limited to a certain extent, only to improve the utilization of the active material can increase the capacity. To increase the battery capacity, the new adding hole ratio, increase the PBO2 content, the proportion of sulfuric acid, but these measures can accelerate the softening of the positive electrode plate, resulting in an accelerated decay in battery life, and the active substance will expand, shrink (especially the positive electrode plate during charge and discharge) ), The deeper the discharge depth, the larger the expansion shrinkage of the active material, and the active substance is softened.
Therefore, when the initial capacity is large, it directly affects the number of battery charge and discharge. Of course, it is necessary to satisfy the use, requiring initial capacity to be too small, to be a folded selection to meet, guarantee extended life, but also ensure capacity to meet the requirements. 9.
Is the battery voltage high? A: The battery voltage and capacity are two concepts. The voltage is related to the electrode material and the electrolyte concentration. The capacity of the battery is released by the active substance, which is released, and its amount, reaction conditions and utilization of each active substance.
Rate, connection, etc., so the voltage is high, the capacity is high, the voltage is low, but the battery voltage is proportional to the battery capacity in the load. 10.
What is the impact of temperature on battery performance? A: When the battery is charged, discharge, electrochemical reaction occurs on the battery electrode, the higher the temperature, the activity of the active substances of the battery, the viscosity of the electrolyte is reduced, and the electrochemical reaction is easily carried out. Not easy to perform. The lower the temperature at the time of discharge, the lower the release capacity, the release capacity will be greatly reduced at a particularly low temperature; the temperature is high; the temperature is lower, the worse the charge reception capacity, and the charging voltage is high can be sufficient.
Electricity. The higher the temperature, the better the charging acceptance capacity, which is easy to cause overcharge, so it is required to reduce the charging voltage, not to cause overcharge. This temperature changes directly affect battery charging and discharging performance.
1. Check the outer casing of the electric vehicle battery, shell cover and sealant, should have no rupture. 2.
Check the installation of the battery, must be secure, the wires and column tower must be firm. 3, brush the outside of the battery with hot water, and dry. Clear dust, soil, wipe it off the electrolyte on the battery cover with cleaning cloth or cotton yarn, keep the battery and connect the wire clean, dry, check the pole column, should not loose.
4, clear the oxide on the pole column and wire connector, seeking debris such as briquettes into the battery. 5, check the starting cable, if there is damage to the battery, and can not be hit the battery, because the lead plate in the battery is extremely low, very fragile, can't be hit because the battery is not good, resulting in cracking, polar plate damage. .
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