Application of brushless motors in daily power tools

 

Initially, brushless motors were mainly used in professional fields such as industrial equipment, aviation models and high-end robots. However, with the development of motor technology, the continuous reduction of manufacturing costs and the improvement of user requirements for performance, brushless motors are becoming the core power source for many household power tools.

 

The application of brushless motors is becoming more and more common in household devices. For example, in vacuum cleaners, brushless motors provide stronger suction and lower noise; in hair dryers, it allows faster wind speed and smarter temperature control; and in outdoor tools such as lawn mowers, brushless motors provide high torque output, helping users to easily complete yard maintenance.

 

This transformation from "industrial scenarios" to "consumer products" marks an important upgrade in motor technology. For power tool manufacturers, understanding the advantages and characteristics of brushless motors and choosing the right motor partner is a key step in creating high-performance products.

 

To put it simply, the most important point is that "the manufacturing cost of brushless motors has decreased." In the past, many household power tools used brushed motors, which have a simple structure, low cost, and are easy to use. However, as the manufacturing cost of brushless motors has decreased and consumers' requirements for performance, noise, and life have continued to increase, traditional brushed motors can no longer meet the development needs of the market. Brushless motors are the upgrade option that conforms to this trend.

 

Compared with brushed motors, brushless motors have the following obvious advantages:

1. Higher efficiency

Brushless motors eliminate the need for brushes and commutators, making power conversion more direct and often more efficient at 85% or higher. This means that with the same amount of electricity, the device can run longer and have a higher output power.

 

2. Longer service life

The carbon brushes of brushed motors will wear out with use, and regular replacement of carbon brushes is a common maintenance step. However, brushless motors have no vulnerable contact parts and can run continuously for longer periods of time with almost no maintenance.

 

3. Lower noise

By eliminating the friction of carbon brushes and commutators, brushless motors are quieter in operation, which is especially important in household appliances such as vacuum cleaners and hair dryers, where users are sensitive to noise.

 

4. Smarter control capabilities

The brushless motor can accurately adjust the speed, start, stop and direction through the electronic controller. This makes it particularly suitable for cooperation with modern intelligent battery systems and speed control systems to improve the user experience.

 

5. Smaller size and higher performance density

Brushless motors can achieve higher output in a smaller space, making them ideal for devices with limited size, such as handheld vacuum cleaners or portable hair dryers.

 

In addition, the development of lithium battery technology has also promoted the widespread use of brushless motors. Modern power tools are increasingly inclined to wireless design, and the combination of high-efficiency, low-energy brushless motors and battery systems can make the equipment last longer and the power output more stable.

 

3.1 Vacuum cleaner: lightweight and high-speed suction source

In modern household vacuum cleaners, brushless motors are the key components to achieve strong suction. Whether it is a traditional horizontal vacuum cleaner or a cordless handheld vacuum cleaner that has become popular in recent years, the motor performance directly determines the vacuuming efficiency and user experience.

 

Compared with traditional brushed motors, brushless motors have several significant advantages in vacuum cleaners:

· Miniaturized design: fits into a compact body, making the vacuum cleaner lighter and more portable.

· High speed output: Many high-end brushless motors can reach speeds of over 80,000 rpm, which can quickly establish a strong airflow for efficient vacuuming.

· Low power consumption operation: With higher energy efficiency ratio and lithium battery system, the usage time of the cordless vacuum cleaner can be extended.

· Low noise performance: Reduce brushing friction, reduce operating noise, and improve indoor comfort.

 

This is why many high-performance vacuum cleaner brands, such as Dyson, Shark, Xiaomi, etc., use brushless motors as their core drive systems. Take Dyson as an example, its digital motor is known for its high speed and efficient air dynamic design, which provides the vacuum cleaner with stable and continuous strong suction.

 

For home users who focus on cleaning efficiency and user experience, a vacuum cleaner with a brushless motor not only has better cleaning effects, but is also quieter, more energy-efficient, and does not require frequent maintenance.

3.2 Hair Dryer: The "High-Speed Heart" Behind Intelligent Temperature Control

Modern hair dryers are no longer just a tool that blows out hot air. Users are increasingly concerned about hair drying speed, wind temperature control, comfort and noise level. Behind these changes is the performance upgrade brought by brushless motors.

 

Brushless motors transform hair dryers from "ordinary household appliances" into "efficient and intelligent" personal care devices:

· Ultra-high speed: The brushless motor can reach 110,000 revolutions per minute, which is several times higher than the traditional brushed motor. This brings faster wind speed and speeds up hair drying efficiency.

· Stable wind temperature control: With the intelligent temperature control chip, the brushless motor can maintain a constant wind speed and temperature to avoid overheating and damage to the hair.

· Low noise performance: no brush friction sound, plus dynamic balance design, the use process is quieter.

· Lightweight and compact: High-power motors are smaller in size, which facilitates the product design to be lighter and suitable for long-term holding.

 

In the high-end market, the Dyson Supersonic hair dryer is a typical example. It uses a high-speed brushless motor and an intelligent temperature control system, which has won wide acclaim from professional hairdressers and ordinary users. Similar designs also appear in high-speed hair dryers from brands such as Xiaomi and Philips.

 

Brushless motors not only improve the core performance of hair dryers, but also bring more differentiation and competitiveness to products. For manufacturers, this is a key technical component for creating high-end personal care appliances.

3.3 Lawn mower: a good helper for outdoor high torque operations

In traditional designs, lawn mowers rely on fuel engines or large AC motors to achieve high torque output. Although these devices are powerful, they have problems such as high noise, high emissions, and complex maintenance. With the improvement of environmental awareness and the development of battery technology, more and more home gardening tools are turning to electric drive systems, and brushless motors are the core components.

 

The advantages of brushless motors in lawn mowers are mainly reflected in the following aspects:

· High torque output: When mowing the lawn, you need to overcome the resistance of the grass and drive the blade to rotate at high speed. The brushless motor can output strong torque at low speed and perform stably.

· Environmentally friendly and quiet: The electric drive system does not produce exhaust emissions and its operating noise is much lower than that of a fuel engine, making it more suitable for use in residential areas.

· Support wireless design: Brushless motor works well with battery system and is widely used in cordless lawn mowers, which is more free to use and does not need to be plugged in.

· Less maintenance required: There are no carbon brushes and fuel system, so there is no need to change oil or clean carbon deposits on a daily basis, which lowers the threshold for use.

 

In addition, brushless motors have good thermal stability and environmental adaptability, and can operate stably in outdoor humid, high temperature or dusty environments, which is a guarantee of the reliability of gardening equipment.

 

Currently in the European and American markets, brands including EGO, Greenworks, and Ryobi have adopted brushless motor systems in their mid- to high-end household lawn mowers. As more home users tend to choose low-noise, easy-to-maintain gardening tools, lawn mowers equipped with efficient brushless motors are quickly becoming mainstream.

 

Although the name "brushless motor" sounds generic, in fact, each power tool has different requirements for the motor. The required brushless motor specifications vary depending on the usage scenario, space limitations, working hours, power output and other factors.

 

Below we take vacuum cleaners, hair dryers and lawn mowers as examples to briefly analyze the selection requirements:

Vacuum cleaner: light and small size + high speed + high efficiency

· Strict shape restrictions: Handheld vacuum cleaners have extremely high requirements on motor size and weight, and the motor must be small enough.

· High speed: 80,000 revolutions per minute or more are required to provide continuous strong suction.

· Strong battery compatibility: Must work well with lightweight battery systems, with low power consumption and high efficiency.

 

Hair dryer: high speed + low noise + precise control

· Ultra-high-speed operation: The wind speed determines the hair drying efficiency. The motor speed of a high-quality hair dryer should reach 100,000-110,000 rpm.

· Noise control capability: suitable for matching with sound-absorbing structure to improve the comfort of use.

· For use with intelligent temperature control chip: A closed-loop control system that supports high-speed response is required.

 

Lawn mower: high torque + stability + durability

· High torque output capability: Facing grass resistance, the motor must be able to provide strong drive at low speeds.

· Outdoor environment resistance: The motor is required to have good sealing performance and be able to adapt to humidity, heat, dust and temperature differences.

· Long-term stable operation: Applicable to long-term load operation, which has certain requirements on heat dissipation capacity.

 

In addition, for most power tool manufacturers, there are several common key points for motor selection:

· Voltage range matching: Common voltages are 12V, 18V, 24V, 36V, etc., and need to match the battery system of the whole machine.

· Control method: Is there a built-in driver? Does it support PWM or Hall sensor control?

· Need a custom shaft length, output power, or mounting flange?

 

Only by deeply understanding the core needs of each product can we select the most suitable brushless motor solution to ensure maximum equipment performance and enhance user experience.

 

Different power tools have different motor requirements. Regardless of the type of power tool manufacturer, a high-performance, reliable brushless motor is the key to product success. This is exactly what our VSD motor team excels at.

 

A variety of specifications are available to cover mainstream application requirements

VSD provides brushless DC motors with various voltage levels and dimensions , suitable for standard platforms such as 12V, 18V, 24V, and 36V, and widely matched with:

Handheld vacuum cleaner (lightweight, small size design)

High-speed hair dryer (ultra-high speed + low noise)

Household lawn mower (high torque + strong environmental adaptability)

Our brushless motors can be equipped with Hall sensors, encoders, built-in drive circuits and other modules according to customer needs, which facilitates rapid integration by the whole machine factory.

 

Professional customization service to help you achieve differentiated design

Every power tool needs a clear positioning in the market. VSD supports customized services from sample development to mass production, including:

Speed, power, torque and other parameter adjustments

Axis length, installation method, interface type customization

Controller supporting development and performance testing support

We are fully aware of manufacturers' requirements for performance consistency and production delivery time. Therefore, in terms of batch supply, we implement strict quality management and shipping process control to ensure that each motor is stable and reliable.

 

If you are looking for an efficient, reliable and customizable brushless motor solution , VSD will be your trusted partner. Welcome to contact us for more product information or sample request.