What kind of charger is better for lithium battery electric bicycles?

The implementation of the new national standard has also accelerated the timeliness of electric bicycles equipped with lithium batteries. Now, more and more electric bicycles use lithium batteries as power reserves. How to correctly use chargers to charge lithium batteries is something that few users will pay attention to. , But unknowingly using the wrong way to cause damage to the battery or a more serious safety accident, it is not worth the loss. Most lithium battery burning and explosion accidents are caused by charging, so how to correctly use a suitable charger to charge the lithium battery is very important. What kind of charger is better for lithium battery electric bicycles? Under normal circumstances, electric vehicles are equipped with original battery chargers at the factory. Of course, the best results are to use original chargers. Electric vehicle manufacturers will use battery chargers according to the specifications of the battery. This method is better than choosing charging by themselves. The use of the device is safer. When the power of the electric vehicle is insufficient during the trip, we need to use a non-original charger for charging. Whether it is a lead-acid battery or a lithium battery, there are corresponding specifications. Therefore, when using a third-party charger, we must Know the basic parameters of the original charger, and choose the closest lithium battery charger for charging as much as possible. For example, common electric bicycle batteries are 36V 48V, etc. The original specifications of the charger are generally 42V-2A, or 54.6V-2A (corresponding to 36V and 48V lithium batteries). And most charger manufacturers will indicate on the charger label whether it is a lead-acid battery charger or a lithium battery charger, and the two cannot be mixed. Can I use chargers of different specifications to charge the battery? The answer is no. For example, if you use a 54.6V-2A charger to charge a 36V lithium battery, the lithium battery will start the disconnection protection and cannot be charged normally, or you can use a lead-acid battery charger to charge the lithium battery. It is also not feasible. Lithium batteries use the CC/CV mode of charging, and lead-acid batteries use pulsed charging. The two chargers have different standards for judging the battery to be fully charged. Mixed use will directly damage the battery. Can I use a fast charger? The answer is that it is possible within the allowable range of the battery, but in general, it is not recommended to use a fast charger for charging. If the lithium battery technology is to achieve fast charging, the charging time can only be shortened by increasing the current. The best charging efficiency of a lithium battery is 0.2C (for example, a battery with a capacity of 10Ah, the best charger current is 2A, similarly, if the battery capacity is 40Ah, the best current for charging the battery is 8A, but for electric vehicles Lithium batteries use the standard of power batteries, so the maximum acceptable current can reach the efficiency of 1C. In practical applications, we use 0.5C current to charge the lithium battery is safe. (For example: 10Ah batteries can be used 10Ah x 0.5 u003d 5A current for charging, 40Ah lithium battery can use 40Ah x 0.5C u003d 20A) Although theoretically we can use high-current fast charging, because lithium batteries are managed by the protection board, which is extremely large Most protection boards usually have certain restrictions for the safe use of batteries. For example, some 10Ah power batteries are limited to only 2A current for charging, and the current exceeding 2A is automatically disconnected to protect the battery. (For example, The 2A current protection used by Xiaomi scooters. When the charging current exceeds 2A, the battery will directly enter the disconnected state. Since we have used lead-acid batteries for a long time, it is difficult to get used to lithium batteries in a short time. Density lithium batteries will inevitably become the mainstream trend of power supplies in the future. At the same time, when we use lithium batteries, safe use must be the first priority. How to charge lithium batteries correctly is no knowledge that users must master. Disclaimer: Published on this site Some pictures and content of the article are from the Internet. If there is any infringement, please contact to delete the previous article: How far are we from graphene batteries now that we are vigorously developing power lithium batteries?