What is the working principle of 18650 3500mah battery protection board? What are the ways to purchase it?

　　Working principle of 18650 3500mah battery protection board:

　　The reason why lithium batteries need protection is determined by its own characteristics. Since the material of the lithium battery itself determines that it cannot be overcharged, overdischarged, overcurrent, short-circuited, or charged and discharged at ultra-high temperatures, lithium battery components always appear with a delicate protective board and a current fuse.

　　The BMS protection function of lithium batteries is usually completed by a protection circuit board and current devices such as PTC. The protection board is composed of electronic circuits and can accurately monitor the voltage and charge and return circuit of the battery core at all times in an environment of -40°C to +85°C. current, and timely control the on-off of the current loop; PTC prevents severe damage to the battery in high-temperature environments.

　　Ordinary lithium battery BMS protection boards usually include control IC, MOS switches, resistors, capacitors and auxiliary devices FUSE, PTC, NTC, ID, memory, etc. Among them, the control IC controls the MOS switch to turn on when everything is normal, so that the battery core is connected to the external circuit. When the battery core voltage or loop current exceeds the specified value, it immediately controls the MOS switch to turn off to protect the battery core. Safety.

　　How to purchase 18650 3500mah battery protection board:

　　Nowadays, the market is flooded with various types of protective plate lithium batteries. Some of the better ones include Sanyo ones, while the worse ones include UF ones. The lithium battery protection plates themselves are also very different. It is very important to choose a protective plate battery that is suitable for your flashlight. Flashlights without protective circuits are usually used with protected batteries, such as incandescent bulb flashlights. As far as the battery cells themselves are concerned, the good quality and common ones include Sanyo, Panasonic, Sony, Samsung, and AW.

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