The development of Mid-drive motors in the 2-wheel electric vehicle market

Nowadays, many two-wheel electric vehicle manufacturers launch Mid-drive motors in response to consumer demand. They claim that based on the traditional wheel hub motor, the Mid-drive motor is powerful and has smoother and more powerful starting speed. Changes in the mechanical principle have increased energy consumption and cost more. electricity. So what if you choose between a Mid-drive motor and a hub motor?

The drive system of two-wheeled electric vehicles is a motor, and motors can be divided into two categories: Mid-drive motors and hub motors. Currently, electric vehicles on the market are basically equipped with hub motors, but Mid-drive motors are rare. The core reason is that the manufacturing cost of in-wheel motors is relatively low. The cost of a set of 1000W Mid-drive motor is 800-1000 yuan. The structure of the hub motor is relatively simple, and the cost of a set is less than 500 yuan. At the same time, it can meet the current needs of two-wheeled electric vehicles. In-wheel motors are widely used in electric vehicles due to their mature design and low price.

Introduction to Wheel hub motor

What is an in-wheel motor? As the name suggests, the motor is built into the wheel hub and directly drives the wheel. In-wheel motor technology is also called wheel-mounted motor technology. Its biggest feature is that the power, transmission and braking devices are integrated into the wheel hub, thus greatly simplifying the mechanical part of electric vehicles.

The structure of the hub motor is relatively simple, mainly composed of electric core, magnetic induction, winding copper wire, machine cover and other parts. The production technology requirements are not high, the manufacturing cost is low and the maintenance is simple.

In terms of performance, in-wheel motors have the advantages of high electric energy conversion efficiency and more power saving. In addition, its power acts directly on the ground without power transmission, which is more advantageous in starting and accelerating.

Of course, the heat dissipation of the in-wheel motor is a big problem. When the speed of an electric vehicle is as high as 80km/h, or even above 100km/h, the defect of poor heat dissipation of the in-wheel motor is exposed. Once it overheats, it will cause tire burnout. When driving at high speed, a tire blowout is a serious problem. Very dangerous thing. Therefore, it is the turn of the Mid-drive motor to come on stage.

Features of Mid-drive motor

The Mid-drive motor places the motor in the middle of the frame. The structure of the Mid-drive motor used on electric two-wheelers is different from that of the wheel hub motor. It is placed directly on the rear wheel center axis to achieve better sports performance. Many electric vehicle manufacturing companies have begun to install Mid-drive motors on their main products to make work and exercise more balanced, reduce losses and increase battery life, and improve the overall performance of electric vehicles.

The advantage of the Mid-drive motor is that it is independently suspended under the body, connected to the rear wheel through a belt or chain, and has an independent heat dissipation system. Therefore, it is more suitable for the installation of high-speed electric motorcycles above 80km/h. In daily life, the speed of most vehicles is 50km/h, and the impact of heat dissipation is small, so the in-wheel motor is sufficient.

The future development of Mid-drive motors

However, compared with hub motors, Mid-drive motors have higher energy consumption, more power consumption, and later maintenance is more troublesome. They need to replace belts, oil, and lubricate and maintain the differential, and the maintenance cost is also higher. Therefore, the mid- to low-end market cannot be promoted.

In developed countries and regions, almost all the electric motorcycles we can see are equipped with Mid-drive motors. There is no other reason than that people have high incomes. Mid-drive models have the characteristics of fast speed, strong power and strong handling performance. Although they are expensive, the riding experience is particularly good, so there is a market!

In the future, the new generation of young people will become the main consumer group in the market, pursuing individuality, pleasure and sports. Everyone's demand for the improvement of electric vehicles is also increasing, while the price sensitivity of electric vehicles is decreasing. In addition, the cost of producing Mid-drive motors for electric vehicle manufacturers is also decreasing. The superposition of multiple factors will further promote the consumption of Mid-drive motor models.

Ningbo Nide Mechanical Equipment Co., Ltd. was established in 2010. It focuses on providing customers with highly automated, information-based, intelligent, and flexible overall motor manufacturing solutions, focusing on the assembly of stators, rotors and complete machines of various motors. Production line. After years of development, NIDE has gradually accumulated a certain degree of influence and brand effect at home and abroad. The current products cover professional manufacturing of new energy motor stators and rotors, hairpin motors, rotor cast aluminum automatic lines, brushless motors, series motors, hub motors, etc., which are used in new energy vehicles, household appliances, industrial motors, water pump motors, servo motors, etc. field.