How much damage does the consistency of the battery have?

On the harm of lithium battery pressure difference. Lithium battery has the advantages of cycle life, gram-capacity ratio, simplicity, and no memory. Now they have gradually replaced lead-acid batteries and are increasingly used in electric bicycles. However, because lithium batteries are a new type of battery, many consumers or businesses know very little about lithium batteries, so once a lithium battery fails, the only way is to replace it. This greatly increases the cost of customers and also forms Waste of social resources. I have more than ten years of processing-related experience in the lithium battery industry and have maintained many lithium batteries. Through the accumulation of work-related experience, I have found out a set of effective lithium battery maintenance methods. I hope that through the brief analysis of this article, more people can re-understand lithium batteries. What is a lithium battery? The positive data of a lithium battery is lithium metal, and the positive data is a carbon material. According to our customary naming rules, we call this battery a lithium battery. There are many names for lithium batteries, such as from the data system, ternary lithium, lithium manganese, lithium iron phosphate; from the battery application can be divided into capacitor type, multiplier type, high multiplier type; divided from the use environment : High-temperature lithium electronics, low-temperature lithium batteries; distinguished from the appearance: steel shell, polymer, square, 18650, 26650, etc. are complicated, and I can’t list them all here. Let’s talk about the lithium batteries used in electric bicycles. ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? At present, the lithium batteries used in electric bicycles include ternlithiumbatteries and lithiumironphosphate batteries, as well as 18650cylinder and polymersoftbag, but the mainstream is 18650ternlithiumcylinder. The operating voltage range of the ternary lithium battery is 2.5V to 4.2V, the rated voltage is 3.6V, and the lithium battery pack voltage capacity requirements are based on a large number of battery strings and combinations. For example, a 2 ah battery capacity, if the demand is combined 36V/10a battery pack, and then ask for five, then this string of 10, a total of 50,18650; lithium batteries are most afraid of overcharge and overdischarge, so the battery pack and the external multiplier circuit pass a protection circuit to limit the battery operation The upper and lower limits of the voltage. The multi-battery series requires high battery consistency, that is, the capacity, internal resistance and discharge channel of a single 18650 battery are the same; but having said that, there will never be the same two leaves in this world, so it is definitely impossible to make the same battery. , We promise to have a certain gap, but the standards of each manufacturer are different, so the quality is also uneven. How great is the damage to battery consistency? For example, a 36V battery pack, due to various reasons, has a series of battery packs that have reached the 4.2v protection value before charging. Even if the voltage of other batteries is still 3.9v and cannot replenish the capacity, the charging function of the protection board will be turned off. When discharging, people with low capacity will first reach the lower limit of the protection voltage value. Even if the battery capacity is not exhausted, the protection board will turn off the discharge function. This is the short board effect! In this way, we should be able to understand that the pressure difference will form the battery The overall performance of the bag is mainly reflected in phenomena such as short-distance travel, cycling power, and unsatisfactory charging. So how to correct the phenomenon caused by the battery pressure difference? In addition to choosing the appropriate battery and consistent matching when making the battery pack (the customer cannot decide)? When the above phenomenon occurs in the customer's car, we can only do the correct battery Use the world energy and lithium battery pressure balance correction instrument to balance the battery pressure difference and restore the battery to the factory pressure difference. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous: Can the lithium battery of electric vehicles be repaired?