Why does the power tool lithium battery have different voltage differences?

Why does the power tool lithium battery have different voltage differences? There are many specifications of power tools for power tools, ranging from 7.4V to 36V. Among them, the most common household power tools are 12V and 16V, and the most professional engineering equipment is 22V. So why are the same power tools lithium Why are batteries divided into so many voltages? What is the difference between them? 1) The power design of the equipment is different. Household tools and special engineering tools must first be different in the power of the equipment. Household use generally does not have a lot of work, so 12V and 16V power tools can meet daily needs. Special engineering The equipment is designed to meet the requirements of long-term high-power continuous work. Higher voltage can make it easier to achieve high-power output. There are the following differences between household electric tools and professional engineering tools: 1. The voltage of equipment and power battery are different: 7.4V\12.6V\16.8V\21.6V\25.2V\36V, etc. 2. The number of revolutions of electric tools is different: different The motors used under voltage are different. The higher the voltage, the higher the number of revolutions, and the higher the power; 3. The difference in battery capacity: For motors with different voltages, the higher the capacity of the power battery that needs to be configured, and The input and output of the power battery required by higher-power devices are also different. The working principle of the electric tool: the DC motor rotates, after being decelerated by the planetary reduction mechanism, it drives the drill chuck to rotate to drive the bit or drill bit and other work. Pulling the forward and reverse switch levers can adjust the polarity of the DC power supply to change the forward or reverse rotation of the motor to achieve disassembly and assembly operations. Safety rules for using power tools: In addition to the general rules for power tools when operating power tools, the following supplementary safety regulations should also be observed: 1. Please charge at 10~40℃. If the temperature is lower than 10℃, it may cause overcharging, which is extremely dangerous; 2. The charger is equipped with a safety protection device, and the rechargeable battery will automatically cut off the power after it is fully charged. It can be used with confidence; 3. Do not let impurities enter the charger. Inside the connection hole; 4. Do not disassemble the rechargeable battery and charger; 5. Do not short-circuit the rechargeable battery. When the rechargeable battery is short-circuited, it will cause a large current to overheat and burn the rechargeable battery; 6. Do not throw the rechargeable battery into the water. The rechargeable battery will explode if heated. Disclaimer: The articles published on this site are all from the Internet and do not represent the views of this site. If there is any infringement, please contact to delete WeChat: Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact delete A: Precautions for the use of lithium battery power tools