There are more and more application scenarios of BLDC motors , and they have been widely used in military, aviation, industrial, automotive, civil control systems, and household appliances. Electronic enthusiast Cheng Wenzhi summarized the current 15 popular applications of BLDC motors.
Vacuum cleaners and sweeping robots are a field that has received much attention in the application of BLDC motors. At present, the new vacuum cleaners and sweeping robots are mainly represented by Dyson and Lake.
In the past few years, the development of heart dust collectors has mainly focused on high-speed motors. The solutions of various manufacturers are different. Among them, Dyson mainly uses single-phase high-speed motors. In order to avoid patents, many domestic manufacturers use three-phase motors. In addition, Nedic directly develops high-quality motors with good cost performance, which has caused a certain impact on domestic manufacturers.
Brushless power tools actually started a long time ago. In 2010, some foreign brands launched power tools using brushless motors. With the maturity of lithium battery technology, the price is becoming more and more affordable, and the magnitude of hand-held tools is increasing year by year, and now they are on a par with plug-in tools.
Equipment cooling fans began to switch to BLDC motors many years ago. There is a benchmark company in this field, that is ebm-papst (EBM), the company’s fans and motor products are widely used in ventilation, air conditioning, refrigeration , home appliances, heating, automotive and other industries.
In particular, the rise of domestic charging piles has given many manufacturers confidence. At present, many domestic manufacturers have increased their innovative investment in DC fans and EC technology fans that can realize intelligent interconnection, which are very close to the products of Taiwan-funded manufacturers in terms of technology and process.
Due to the influence of industry standards and national energy efficiency standards, freezer cooling fans have begun to switch to BLDC motors, and the conversion speed is relatively fast and the number of products is relatively large. According to Qian Zhicun’s observation, there are fewer and fewer products using SP motors for export. He predicts that by 2022, 60% of freezer coolers will be replaced with inverter motors.
Since the speed of the refrigerator compressor determines the temperature inside the refrigerator, the speed of the inverter refrigerator compressor can be changed according to the temperature, so that the refrigerator can be adjusted according to the current temperature situation, so that the temperature in the refrigerator can be better kept constant. . In this way, the food preservation effect will be better. Most inverter refrigerator compressors use BLDC motors, so they have higher efficiency, lower noise and longer service life.
Since the smog weather has intensified in the past few years, people’s demand for air purifiers has increased. Now many manufacturers have entered this field.
At present, the products on the air purifier market generally use NMB and Nedic external rotor motors for small ones, and EBM fans are generally used for large air purifiers.
Most of the domestic motors used in air purifiers are imitation Nedic products, but now the types of domestic motor platforms have become more and more abundant.
Floor fans have always been a must for small home appliance motor manufacturers. At present, the mainstream small home appliance manufacturers in China, such as Midea, Pioneer, Ricai, Emmet, etc., basically have products that use brushless motors on the market. Among them, Emmett has the largest number of shipments, and Xiaomi has the lowest cost.
Water pump is a relatively traditional industry, with a wide variety of types and various types of solutions. Even if it is a driver board with the same power, there are many kinds on the market, and the price ranges from less than two yuan to four or fifty yuan. In the application of water pumps, the medium and large power are mostly three-phase asynchronous motors, and the small and micro water pumps are mainly AC two-pole pumps. Now the renovation of northern heating is a good opportunity for technological innovation of pump solutions. However, Qian Zhicun revealed that although some manufacturers have invested in this field, the effect is not yet obvious.
From a technical point of view, brushless motors are more suitable for applications in the field of pumps, and their volume, power density, and even cost have certain advantages.
Hair dryer is an application with relatively large shipments in the field of personal care, especially since Dyson launched high-speed digital motor products, it has brought fire to the entire hair dryer market.
In recent years, many lamp factories on the market have successively transformed to produce ceiling fan lamps. Ceiling fan light products are mainly sold to India, Malaysia, Australia, the United States and other countries, but in recent years, the domestic market has also begun to heat up.
At present, domestic manufacturers are mainly OEMs, and the manufacturers are concentrated in Zhongshan, Foshan and other places. The product shipments are relatively large. It is said that some manufacturers have a monthly shipment of 400K.
The brushless conversion of exhaust fans actually started a long time ago, but because there are quite a few types of exhaust fans, the power range is very wide, and the price of SP motors is too low, the conversion rate has not been high. Also quite confusing.
Due to the stricter energy efficiency standards in foreign countries, the conversion rate is higher, but the shipment volume is actually not large. Qian Zhicun said, “According to some domestic manufacturers that I have contacted to supply foreign exhaust fan manufacturers, there are exhaust fans that use brushless motor solutions, but several large manufacturers add up to less than 1,000 units. Thousands.”
The cooker hood is an important part of kitchen appliances, and the traditional power part is a single-phase induction asynchronous motor. In fact, the range hood is an application with a long brushless conversion time, but a low conversion rate. One of the important reasons is that the cost of frequency conversion is not well controlled. The current frequency conversion solution costs about 150 yuan, not brushless. The motor solution can be done without 100 yuan, and the low-cost one may only cost about 30 yuan.
Now more and more people like fitness, professional players tend to relax their muscles after exercising. Therefore, the shipment of fascia guns has started to blowout in recent years. It is said that now gym trainers and sports enthusiasts are equipped with fascia guns. The fascia gun uses the mechanical principle of vibration, and transmits the vibration to the deep fascia muscles through the fascia gun to relax the fascia and reduce muscle tension. Some people regard the fascia gun as a relaxation artifact after exercise.
However, the water of the fascia gun is also very deep now. Although the appearance looks similar, the price ranges from more than 100 yuan to more than 3,000 yuan.
Figure 14: Fascia guns at different prices on Taobao.
Technically speaking, most fascia guns use non-inductive external rotor brushless motors.
In the past two years, the trend of electrification of related equipment in gyms has become more and more obvious, especially treadmills. There are more and more treadmills using external rotor brushless motors. The power range is 800W~2000W, and most of the rotation speeds are between 2000rpm and 4000rpm, and high-voltage solutions are the main ones. Generally, professional-level treadmill products have flywheels in them to increase inertia and prevent sudden stops in the event of a power outage.
In recent years, another popular application is the advertising machines in major shopping malls. Advertising machine has become a dark horse in new applications with its novel structure, beautiful 3D display, flexible placement and other characteristics. Although the shipments are not large, it is worth looking forward to.
Because the advertising machine needs the cooperation of the motor and the lamp, and the requirement for the accuracy of the speed is relatively high, the frequency conversion scheme is basically used. Now there are several manufacturers in Foshan doing this product.
Judging from the hot applications of these brushless motors, it is an inevitable trend to convert these applications into brushless motors in the future. The main reasons are as follows:
First, energy efficiency standards are becoming more and more stringent; second, the appearance of products can no longer influence customers’ choices to a large extent, but technical marketing has an increasing impact on consumers; third, the maturity of brushless motor-related technologies is becoming more and more mature. The higher the market, the more powerful domestic semiconductor manufacturers, and the lower the cost of brushless motors; fourth, the brushless motors produced by domestic motor manufacturers are catching up with first-line motor brands in terms of technology, process and product consistency. .
That is to say, the application scenarios of brushless motors will become more and more popular in the future. With the popularization of automation, smart home applications, automobiles, etc. have entered the life of ordinary people, more and more personalized products, and the subdivision of motor types is also more obvious. For manufacturers, if they can find their own positioning , focus on subdivisions, so that they can better reflect their competitiveness.
Post time: Jun-01-2022