Can Li-ion batteries do not need the protection board? What is the use of lithium-ion battery protection board

Can lithium-ion batteries do not need a protection board? The reason why someone has the idea that a lithium-ion battery does not need a protection board is largely due to the emergence of lithium iron phosphate batteries. Because there is news that lithium iron phosphate batteries are not afraid of overcharging or over-discharging, the argument that lithium-ion batteries can be used without a protective plate has emerged. However, so far, there has not been a lithium-ion battery manufacturer that publicly declares that it does not use protective plates. Generally, batteries have protection boards, and the use of lithium-ion battery protection boards is also for battery safety. But different types of battery protection boards have different uses. The lithium-ion battery protection board is designed to avoid problems such as overcharge, overdischarge, overcurrent protection, and short circuit. Some also have smart chips that can record the usage and status of the battery. Lead-acid battery Lead-acid battery is the protection of current balance and short circuit. I heard that lithium iron phosphate batteries are not afraid of overcharging or over-discharging, so some people think that lithium-ion batteries do not need to be protected. But now there is no official news that the protection board can be eliminated. Cuneng Electric has a word, so don't guess. The lithium-ion battery protection board is a protection for the charge and discharge of a series-connected lithium-ion battery pack. It detects the overvoltage, undervoltage, overcurrent, short circuit, and overtemperature status of each single cell in the battery pack to protect and extend the battery life. For example, when the battery is discharged, the protection board will protect the battery from over-discharge and cause battery damage. This adds a protective barrier to lithium-ion batteries, making lithium-ion batteries safer and longer service life. If there is no protection board, the battery life will not only be affected, but also dangerous situations will appear. Conversely, if the quality of the protection board is not good, it will cause damage to the battery. Therefore, when buying lithium-ion batteries, you must choose regular channels, regular manufacturers, and big-brand lithium-ion batteries. Lithium-ion battery protection board use Lithium-ion battery protection board, as the name suggests, is used to protect the battery cells. The important uses of the protection board are: 1. Overcharge protection: When you charge, the voltage reaches the highest battery voltage (4.2V), protect The board will automatically power off and shut down, and it can't be charged; 2. Over-discharge protection: When your lithium-ion battery is about to run out (the phone is about 3.6V), the protection board will also shut down and it can't be discharged. Your instrument will automatically shut down; 3. Overcurrent protection: When the lithium-ion battery is discharged (used), the protection board will have a maximum current limit (different equipment requirements are different), when the discharge exceeds this current protection board will also Automatic shutdown; 4. Short circuit protection: When your lithium-ion battery is accidentally short-circuited, the protection board will automatically shut down within a few milliseconds and will not be powered on. At this time, it will be fine if the positive and negative poles touch one. 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: Lithium-ion battery charging method and first charging time introduction