Repair methods of lithium batteries for electric bicycles
Distilled water is injected into each hole with a syringe. If 1.28 standard electrolyte is added, the plate may burn out due to its high acid solubility. For example, when we eat hot pot, why do we eat more and more salty? That is to say, when water evaporates, salt does not evaporate through steam. Likewise, the acid in the battery does not evaporate. What is missing is water. So we just need to add about 20 - 30 milliliters of distilled water to each pore.
After filling up, let the battery rest for half an hour, so that the sponge around the plate fully absorbs water. Then, all the electricity in the battery is discharged by using a barrier discharge. If there is no resistance, it can be replaced by a 12V light bulb, such as a motorcycle headlamp, car turning signal, as long as they can release the effect. How to judge that the battery is about to run out of electricity, the resistance discharge of cement is hot at the beginning, and gradually not hot. At this time, the battery was dead. In the case of light bulbs, it is also direct. As long as the light is slowly on, it means that the battery discharges are over. The discharge time depends on the discharge capacity of the battery. We can ride on the battery until it loses power. This can shorten the discharge time.
After discharge, the battery can be charged by pulse charging, because pulse charging can effectively eliminate the vulcanization of the plate and improve the capacity of the battery. If you don't have it, you can change it into a car.
Take pulse charging as an example.
After charging, use syringes to extract excess water from each hole. There are 6 holes, which are completed step by step. Put the lid on, and you can put the car on. Lithium batteries in electric vehicles usually have at least ten or more lithium batteries in series with battery protection panels. They are completely different from lead-acid batteries (in small quantities, usually without protective panels). If there is a fault, the non-professional technicians are generally unable to solve it.
Damage to lithium batteries in electric vehicles generally includes the following aspects:
1. Battery protection board is damaged, and the above electronic components are dense, which makes maintenance difficult.
2. Battery protection panel is intact, single battery performance is worse, it is not easy to find;
3. Battery protection board is in good condition. Individual batteries should be inspected for short circuit.
In short, after the failure of lithium batteries in electric vehicles, maintenance difficulties are usually found after sale, which can be solved by technicians of lithium battery manufacturers or replaced by lithium battery packs of the same type of electric vehicles.
Repair batteries with battery chargers for electric vehicles:
The charging voltage, current, battery type and specification of electric vehicle charger are matched. Therefore, the car charger can not repair the battery pack, and can use a higher power electric vehicle charger. Examples: 1. The battery pack specification of electric vehicle is 48V20AH, which can be charged and maintained by 60V20AH battery charger; 2,48V12Ah battery pack which can be maintained by 48V20AH battery charger.
Maintenance Principle: The main reason for the decline in battery performance is that the battery has been vulcanized, and battery manufacturers after-sales maintenance batteries. All kinds of battery repair instruments and repairs on the market use high-power charging equipment, using "high current, high voltage" to remove vulcanization. Repair batteries. Therefore, a common charger with the first power supply has the function of removing sulfur from the battery.
Repair Batteries with Hot Water from Dry Washer
Most EV users know that EV is not far away and need to add distilled water to maintain and repair batteries. However, the pure water and various rehydration on the market have a short-term impact on the battery, and then accelerate the decline of battery performance and scrap ahead of time. Because these liquids contain metal ions and impurities, they will corrode the battery plate, lead to battery self-discharge and active material falling off, leading to permanent battery scrap.