Teach you how to use, maintain and repair the battery of an electric car

Repairing battery electric vehicles has become a convenient and fast way for more and more people to travel. But with the passage of time, the use of electric vehicles, the battery will gradually appear some problems. Come with me and I will teach you how to use batteries to maintain and repair electric cars. Fault diagnosis (1) Shorten the starting point of the electric vehicle journey (or the battery capacity is not less than 70%), clarify that the battery starts to lose water and solidify, and the water should be refilled or a small coppersmith nano carbon sol battery activator should be added. (2) The driving distance of the electric vehicle is reduced by less than half (or the battery capacity is not less than 50%), and the battery plate is severely vulcanized and slightly softened. Various battery calibration fluids should be refilled immediately. (3) The driving distance of the electric vehicle is shortened by more than half (or the battery capacity is less than 50%), and the battery plate is vulcanized and softened seriously. The effect of adding various battery calibration fluids is not obvious. A: Choose the drum battery and replace the old one. The load voltage of the battery is 11.4v12.7v, and the terminal voltage is about 13.2v. B: Drive the battery car to a position where it cannot run, set the battery car to run idly, measure the voltage of each battery with a multimeter, select the battery with the lowest voltage, and replace the old battery. The battery load voltage is 11.4v12.7v, and the terminal voltage is about 13.2v. (4) The driving distance of the electric vehicle is shortened by more than 3/4 (or the battery capacity is less than 30%, the appearance of the battery is swollen and leaking), and the modification is discarded. Order processing (1) Imbalance correction method: find the batteries that have the same capacity, voltage, self-discharge, and battery internal resistance. (2) Water loss correction method: Pry open the cover on the battery, open the rubber cap to expose the vent hole, through the vent hole you can see the inside of the battery, check whether there is dryness in the hole, that is, whether the battery loses water. The battery pad is wrapped in white fiberglass wool and should usually be damp. Distilled water is sucked in with a dropper and injected into the battery through a vent. Cover the exhaust port with a breathable barrier to prevent dust from falling into the exhaust port. It is best to use medical double distilled water. The principle of hydrating is less but fine. If the amount that can be added is not enough, the more the proportion of acid formed decreases, the capacity of the battery will be insufficient. Special note: Use glass or plastic straws for water. It is recommended to use a medical disposable injection machine, which is convenient to use and convenient to measure. Do not use any metal utensils for water replenishment. The needle must be pulled out of the metal needle and used after setting up the plastic tube. (3) Sulfation, calibration method: The vulcanized battery is modified by a screw screw to modify the calibration instrument, using fuzzy digital control theory, after measuring the battery state, charging, discharging and continuous emission of microwaves at positive and negative frequencies for 10 to 20 hours. Take out the battery to become a powerful lead sulfate crystal. (4) Board softening correction: Discharge the battery to 10.5V and discharge it with a bulb for 1-5 hours. Then comes the activator, activator correction. (5) Short-circuit correction method: water battery, can be punched clearly, short-circuit lead! Electric vehicle battery, can quickly short-circuit the positive and negative electrodes, and burn out when short-circuited! (6) Open-circuit correction method: 100A test battery voltage 0V For the open circuit, use a single measurement method and measure the open circuit with a multimeter, and the welding is good. Daily maintenance (1) High temperature exposure is not allowed. If electric vehicles are directly exposed to the sun, the probability of battery failure is very high. Even electric vehicle batteries will catch fire at high temperatures, so high temperature exposure must be prevented. (2) Do not charge at high temperature. Hot weather, coupled with the heat generated during the charging process, will cause the battery's external temperature to be very high, the protective case of the hot battery's external appearance, or even fire, so the charging time must be carried out in a cool place Recharge. (3) No charge immediately after traveling. The temperature of an electric vehicle is very high after high temperature driving. If it is directly charged, the temperature of the battery will continue to rise, even exceeding the critical point, and spontaneous combustion. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Analysis of the principle and method of use of lead-acid batteries