What are the Applications of Hub Motors?

In the early stage, hub motor technology was mainly applied in the automotive field. It can be simply understood as integrating the motor and tire in the hub, eliminating the mechanical transmission parts of traditional cars, such as reducer, transmission shaft, differential, half shaft and a large number of parts, as the power to directly drive the car, which is a subversive driving way. As a new type of electric motor, it is a motor integrated inside the wheel hub. Its main advantage is that it can greatly improve the vehicle power performance and energy efficiency, but also can reduce the vehicle weight and fuel consumption. It works by converting electrical energy into mechanical energy, which drives the wheels and move the vehicle forward or backward. Compared with the traditional engine drive mode, the hub motor can control the power output more accurately, so it is an important improvement to the handling and safety of the vehicle. In addition, the size and weight of the hub motor are small and can be embedded in the wheels, greatly reducing the weight of the vehicle, reducing fuel consumption and environmental pollution. The application of the hub motor products with simple transmission structure and efficient energy conversion has been greatly expanded, such as: driverless car, electric vehicle, electric power bicycle, elderly mobility scooter, electric scooter, balance car, intelligent robot, inspection robot, automatic guidance transport vehicle, AGV chassis and so on. Different fields for the hub motor requirements are also different, especially for the control requirements of the hub motor. This also makes the hub motor technology to a certain extent has been rapid development and change.

As one of the earliest applications, Hub motor has the advantages of high efficiency, high integration, high space utilization rate, convenient control and so on, But not much has been seen on the market right now, Mainly applied in some specific site vehicles, no large-scale applications, Basically stay in the concept car, test car, or limited edition stage, This is considered by the automotive industry as the best new energy drive solution in the future, Because it has changed the driving system of traditional cars, An increase in the unsprung mass, It affects the handling performance of the whole vehicle, More validation on safety and reliability, At the same time, it also faces more technical challenges such as waterproof, dustproof, shockproof and heat dissipation (the company is studying motor water cooling and air cooling technology). There are also the restructuring of the automobile industry. Used for some high-end restaurant delivery robot, from the guests to the table whole process service, can effectively replace or part of the restaurant waiter work, more common, is used in the hotel reception, super service, public disinfection, temperature measurement and so on scene service class intelligent robot, provides great convenience for human life. Hub motor plays an important role in this field as both bearing and driving walking components. Robot chassis (AG V/AMR chassis) mainly carries the basic functions of positioning, navigation, obstacle avoidance and movement of the robot, and is a very important hardware module. This kind of autonomous mobile chassis is mainly used for the secondary development of applications in various industries, and completes the specific robot operation tasks through the interaction and cooperation of the chassis movement + the whole machine function. The motor performance requirements are relatively high (load, position locking, reliability, obstacle crossing, climbing, safety, accuracy, etc.), and they also have higher protection level requirements for the application of outdoor operations. Inspection robot with the progress of society, substation automation level enhances unceasingly, the present situation of unattended increasingly common, substation as the key to the power system, its safety has important influence on people's production and life, and the traditional way of inspection has not meet the development of modern substation, replaced by intelligent inspection robot. Compared with the traditional human inspection, its main advantages include flexible operation, not affected by external weather, and no physical restrictions. Intelligent inspection robots are also widely used in other industries, such as oil and gas transportation, transportation and rail, smart farms and so on.

In recent years to the concept of transportation, personal travel is popular, on the market quality light, exquisite appearance and superior performance of electric scooter (can be subdivided into two wheels and four-wheel scooter) this new product, unlike the traditional scooter, electric scooter after installation wheel motor, drive and battery, in niche extreme sports can be used as walking convenience to people's travel, in the electric skateboard industry, because of its novel products, good momentum of development, and huge market potential, by the attention of the international capital market and favour. As an extreme sports project, some brand manufacturers will also spontaneously organize competition activities, in order to attract more skateboard enthusiasts to participate in and understand, promote the development of the electric skateboard market and improve their own brand image.The hub motor for electric bicycles is currently the most used and the most mature product, and the vast majority of electric bicycles (including the top brand electric car brands) are basically using the hub motor. Traditional chain-transfer structures have been replaced. Because of its huge market size, after years of development, has formed a very mature industrial structure, but also greatly reduce the motor cost, in the supply chain perfect Jiangsu area, electric vehicles with hub motor production enterprise competition has become white-hot, it also makes this kind of wheel motor enterprise profit space is gradually compressed.

In addition, the hub motor is also more used in consumer products, such as: twisting car, luggage, etc., there are also used in large, high-end medical devices, as the electric power use of equipment. With the international community's attention to energy consumption and environmental protection, the future products will develop towards the trend of more intelligent, more energy saving and environmental protection. The hub motor itself and its control technology will face new challenges, and more tend to lightweight design to make its structure more compact, and do design optimization in the heat dissipation of hub motors. At present, the common hub motor has inflatable tire, solid tire, etc. Although the solid tire can be used at ordinary times to avoid maintenance, there will inevitably be tire wear after a long time, then how to do the tire and motor quick disassembly design (without needing to return to the factory after sales), separation and replacement is a new test for the motor designer. At the same time, based on the development of electronic technology and the study of software algorithm, each application field for the hub motor control also has higher requirements (mainly algorithm), through the motor body structure optimization (motor efficiency) and drive control (algorithm), make the complete set of hub power system play its maximum efficiency.

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