Lithium battery maintenance method resolution

Source: 2020 - 03 - 29 direction hits: damage to the pressure difference of lithium-ion batteries, lithium battery maintenance methods of analysis of lithium battery cycle life, capacity ratio, and the advantages of light weight, no memory, is now gradually replace lead-acid batteries, more and more applied in the electric bicycle; However, due to the lithium battery is a new type of battery, many consumers or businesses know little about the lithium battery. Therefore, once the lithium battery fails, the only way is to change, which greatly adds to the cost of the customer, also formed the waste of social resources. I have ten years of production experience in the industry of lithium batteries, repair a lot of lithium batteries, after in the accumulation of operating experience, for a set of effective methods of lithium battery repair. Hope that through this brief introduction, more and more people be able to meet the lithium battery. What is a lithium battery? Lithium battery cathode is lithium metal, the anode is carbon materials. According to our naming convention, we call this kind of battery lithium batteries. There are a lot of lithium battery, if from the point of data system, there are three yuan lithium, lithium manganese, lithium iron phosphate; From the perspective of the application of the battery, have specific capacitance type, double shape, high multiplication; From using the environment can be divided into: high temperature lithium electronic, low temperature lithium batteries; From the outside are: steel shell, the polymer, square, 18650, 26650, etc, can't list here, let's talk about the application of lithium-ion batteries in electric bicycle. At present, the main lithium battery electric bicycle use are ternary lithium battery and lithium iron phosphate battery, 18650 cylinder and polymer soft package, but the main flow is three yuan 18650 cylinder lithium. Ternary lithium batteries work voltage range is 2. 5 V to 4. 2 V, rated voltage 3. 6 V, lithium ion battery voltage capacity requirements, on the basis of a large number of battery strings and combination, for example, a battery capacity 2, if you need to assemble 36 V / 10 a battery pack, you will need to 5, then the string of 10, a total of 50, 18650; Lithium battery is the most afraid of overcharge and over discharge, so the battery pack and the external power supply circuit through a circuit maintenance, limits the upper and lower working voltage of the battery. Many battery series for high consistency, namely single 18650 battery capacity, internal resistance and discharge channels; But then again, the world never find the same two leaf, it is not possible to do the same cell, we allow a certain distance, but the standard of each manufacturer is different, so there are good and bad quality. How poor battery consistency? For example, a 36 v battery pack, in the process of charging for a series of reasons, in the charging time has reached 4. 2 v maintenance, maintenance plate charging function will be closed, even if the other battery voltage is 3. 9 v cannot compensate for capacity. At the time of discharge, low capacity will be to maintain the lower limit of voltage, even if the battery capacity is not released, the maintenance board will be closed discharge function, this is a short board effect. So we can understand, the differential will form the overall performance of the battery pack, this is mainly embodied in the phenomenon such as travel, cycle power, charging. So how to change the phenomenon that the differential pressure caused by batteries? In addition to choose a good battery and consistently when making battery matching them ( The customer cannot decide) 。 When customer car appear the phenomenon, the only thing we can do is correction for differential pressure of the battery, use 'world energy lithium battery differential pressure balance calibrator' for differential pressure balance of the battery, put the battery back to the factory