Analysis of repair and activation methods of lithium iron phosphate battery packs for electric vehicles

Repair methods for lithium iron phosphate battery packs for electric vehicles 1. After refitting the entire set of lithium iron phosphate battery packs, we often perform charge and discharge tests on the lithium iron phosphate battery packs for electric vehicles. In the inspection, it is often found that 50% of a set of batteries The battery is not damaged. The reason is that in the series-connected battery pack, individual batteries lag behind, resulting in a decline in the function of the entire battery pack, so that the function of the entire battery pack is reduced. 2. Water replenishment The replenishment of the battery used for the lithium battery of the electric vehicle for about 4 months can extend the service life of the battery and extend the time evenly to more than 3 months. It should be noted that after each refilling, the battery is in an overcharged state to turn the battery from a quasi-lean liquid to a lean-liquid state, and this overcharge is good for improving the battery capacity. 3. Eliminate sulfide. Use lithium iron phosphate battery repair equipment to eliminate sulfide. How to activate the lithium iron phosphate battery pack for electric vehicles The lithium iron phosphate battery of electric vehicles is not activated like the nickel-metal hydride batteries in the past, and the lithium battery can be used normally if it is overcharged. In addition, lithium batteries can be recharged at any time, unlike nickel-metal hydride batteries that have to be used up to charge. In fact, there is no special way to activate the lithium iron phosphate battery electric vehicle. The lithium battery will be naturally activated when the electric vehicle is driving. Because lithium batteries have no memory effect, they can be charged at any time. So you have to develop a good habit of charging in time after use, which can extend the battery life by 3-5 times. The first activation method is to find a set of lithium iron phosphate batteries for electric vehicles with the same model as the original battery, and connect them in parallel with this set of unrechargeable batteries, let the good batteries discharge to the unchargeable batteries, and charge them in parallel after several cycles , There is a certain chance that the battery can be reactivated. The second activation method is to use a small charger to charge the lithium battery pack first, and then change the original charger to continue charging. For example, if the battery that cannot be charged is 60V, you can first charge it with a 48V charger, and then use the original 60V charger to charge it, so there is a certain probability that it can be activated. The third activation method is to try to quickly charge for one to two hours, and use a professional tester to see if the voltage has increased. If it does, you can choose to use the original charger to continue charging, so that the electric vehicle lithium battery can be activated. 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: Can the lithium iron phosphate battery pack be charged with a lead-acid battery charger?