Analysis of repairing lithium batteries for electric bicycles

Use a syringe to inject distilled water into each hole. If 1.28 standard electrolyte is added, the electrode plate may burn out due to high acid solubility. For example, when we eat hot pot, why do we eat more and more salty? That is, when the water evaporates, the salt will not evaporate through the steam. Likewise, the acid in the battery will not evaporate. What is missing is water. So we just need to add about 20-30ml of distilled water to each small hole. After filling up, let the battery rest for half an hour to allow the sponge around the tray to fully absorb water. Then use electricity to block the discharge to discharge all the electricity in the battery. If there is no resistance, you can use a 12v bulb instead, such as motorcycle headlights, car turning signals, as long as they can be released to the effect. How to judge that the battery is almost out of power? At the beginning, the resistance discharge of the cement is hot, and gradually it is not hot. At this time, the battery is dead. In the case of a light bulb, it is also straight. As long as the light is turned on slowly, this means that the discharge of the battery is over. The discharge time depends on the discharged capacity of the battery. We can ride on the battery until it loses power. This can shorten the discharge time. After the battery is discharged, the battery can be charged by pulse charging, because pulse charging can effectively eliminate the vulcanization of the plate and increase the capacity of the battery. If you don’t have it, you can replace it with a car. (Charge the battery) Take pulse charging as an example. After charging is complete, use a syringe to draw excess water from each hole. There are 6 holes in total, which are completed step by step. Put the lid on and you can install the car. The lithium battery in an electric vehicle usually has at least ten or more lithium batteries connected in series, and is equipped with a battery protection board. They are completely different from lead-acid batteries (the number is small and there is generally no protective plate). In the event of a failure, non-professional and technical personnel generally cannot handle it. The damage to the lithium battery pack of electric vehicles generally includes the following aspects: 1. The battery protection board is damaged, the above electronic components are intensive, and the maintenance is difficult; 2. The battery protection board is intact, and the performance of a single battery is worse, and it is not easy to find; 3. The battery protection board is intact, and individual batteries are short-circuited and should be checked. In short, after the lithium battery of an electric vehicle fails, it is usually found to be difficult to repair after the sale, and the lithium battery manufacturer’s technicians will handle it, or replace the lithium battery pack of the same type of electric vehicle. Repair the battery with an electric vehicle battery charger: match the charging voltage and current of the electric vehicle charger, and the model and specifications of the electric vehicle battery. Therefore, car chargers cannot repair battery packs and can use more powerful electric vehicle chargers. Examples: 1. The specification of the electric vehicle battery pack is 48V20AH, which can be charged and maintained with a 60V20AH battery charger; the 2,48V12Ah battery pack can be charged and maintained with a 48V20AH battery charger. Repair principle: The main reason for the deterioration of battery performance is that the battery has been vulcanized and the battery manufacturer's after-sales repair battery. All kinds of battery repair instruments and repairers on the market use high-power charging equipment, using high current and high voltage to remove sulfide. , Repair the battery. Therefore, the general charger with the first power source has the function of removing sulfur from the battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What exactly affects the performance and life of lithium batteries?