Power tools, especially cordless power tools, appeared in 1961. At that time, Black and Decker made the best cordless drill for the first time, mainly for industrial companies and commercial companies. In 1969, Makita (Makita) released the 6500D. This is the first rechargeable cordless electric drill sold to the public.
Today’s power tool suppliers have achieved explosive growth, and personal time at home has increased, so many people make renovations by themselves, while others hire contractors to make improvements and upgrades in order to change the landscape. In addition, the growth of Industry 4.0 has triggered recent technological innovations in brushless direct current (BLDC) motors and lithium batteries. Purchasers of power tools benefit from a practical, buyer-friendly, and easy-to-use cordless power tool ecosystem, including hundreds of tool types, powered by 2 to four battery systems.
Cordless power tools have also gained market shares in various industries such as auto workers, aerospace, home appliance and agricultural equipment manufacturers, and Industry 4.0. This is due to improved mobility, safety, torque, accuracy, and data collection capabilities. The advancement of lithium-ion technology has reduced the risk of cables and tripping, allowing operators to move freely in a small area without worrying about the power cord being accidentally cut off, thus realizing freedom of movement.
The quality, reliability, and life of the product directly depend on the torque and RPM control indicators that are accurately calibrated during the manufacturing and assembly process of the factory. The latest innovation in BLDC motor control achieves very strict control and accuracy of torque and RPM. Some cordless power tools include Wi-Fi, Bluetooth Low Energy (BLE), etc., and the assembly of all devices is completely consistent through a centralized controller.
For example, five factory workers can install fasteners on five assembly lines in three different shifts. Through wireless connection, five assembly lines can achieve 24/7 user-certified RPM/torque control accuracy and reproducibility. Of course, real-time data can be automatically recorded to comply with quality manufacturing compliance indicators and historical program tracking.
The mobility of power tools has various meanings. The tractor driver has a cordless lithium-ion drill in the car, which can be used in the event of a breakdown. This is of great benefit to them. Agricultural workers can maintain small equipment without returning to their barn. Wind and solar installation engineers have an advantage because it is impractical to run power cables longer than 100 feet.
The same is true for the inspection, preventive maintenance, and on-site repair services of residential/commercial equipment such as fuel/gas stoves, HVAC, electrical renewal, plumbing systems, etc.
In addition, in a new construction site, when there is no main power supply, especially when many electric tools work in parallel, the traditional generator power supply may cause stress to the motor of the wired power tool due to the change of the online power supply. Or, the fuel of the generator is accidentally exhausted during use, which can damage the motor. Many new construction sites now use generators to charge multiple batteries in order to buffer the motors of power tools from alternating current fluctuations.
The lithium-ion battery provides a very clean DC voltage to the motor, which maximizes the life of the motor. Cordless tools are useful in any place that is difficult for workers to access.
Most cordless power tools use 18650 cylindrical lithium-ion batteries. 18 indicates a diameter of 18 mm, and 650 indicates a length of 65.0.
The rated voltage of the 18650 ranges from 3.3 V to 3.7 V, depending on the cathode chemistry. Sometimes called a “jelly wound battery” (the internal anode, cathode, and separator, and electrolyte are wound on a central axis.), the 18650 can be connected in series to increase voltage, or in parallel to increase capacity or both. For example, if five batteries of 3.6 V (nominal) 3 Ah are connected in series. It is =18v) 3.6 V) or 54wh) 3ahx18v).
Cordless power tool supplier 5startool(discount tools) works closely with lithium-ion battery suppliers to optimize “Maximum Continuous Discharge” (MCD) performance and cost, weight, charge rate, cycle life, capacity, and durability (shock, vibration, and temperature tolerance) Relationship.
