Can the lithium battery not use the protection board?

Lithium battery does not need a protection board. For this question, I also specifically asked our company’s engineering staff. The answer he gave is that if the 18650 lithium battery does not have a protection board, first you don’t know how far the lithium battery is charged. Second, if there is no protection board, it will not be able to charge, because the protection board must be connected to the lithium battery with 2 wires. Don't think that the quality of the lithium battery you bought is good without the protection board, but if it takes a long time, there will be some problems. When fully charged, the lithium battery protection board is the charging and discharging protection of the lithium battery pack in series, which can ensure that the voltage difference between the batteries is less than the set value, and can achieve the balance of each battery in the battery pack, thereby effectively improving Charging effect in series charging mode. At the same time, it can test the battery overvoltage, overcharge, overdischarge, short circuit and overheat of each lithium battery spot welding machine in the battery pack to protect and extend the battery life. Under-voltage protection can warn each single cell from damage due to over-discharge during discharge. When it's clear that the statement is about the purpose of the protection board, I don't know much about the idea that arises. Because the use of the protection board for lithium batteries is equivalent to an extra protective barrier, the purpose of the protection board is to ensure the safety of lithium batteries and extend the service life. Without the protection board, not only the life span is difficult to guarantee, but also very dangerous. Therefore, when the lithium battery is completely immune to overcharge, overdischarge, etc., when the lithium battery packaging equipment can completely replace the protection board in the design of the lithium battery itself, the lithium battery can not need the protection board, but at this stage, Lithium batteries still need to protect the board. 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: What is the correct way to use lithium batteries?