Motor competition: Brushless motor vs. brushed motor

The motor is the core component of an electric bicycle, and its performance directly affects the riding experience. Electric bicycles mainly use two types of motors: brushless and brushed motors. Although they both provide power, there are significant differences in their working principles, performance, and applicable scenarios. So, which motor is better suited for your needs? Let’s take a closer look at both motors' pros, cons, and use cases

1. Working principles of brushless motors and brushed motors.

1. Brush motor

The brushed motor switches the current direction through the contact between the carbon brush and the commutator, thereby driving the motor to rotate.

• Structure: The stator is a permanent magnet and the rotor is a coil.
• Commutation method: mechanical commutation (carbon brushes are in contact with the commutator).

2. Brushless motor

Brushless motors use electronic controllers to complete commutation through induction technology, eliminating the need for carbon brushes.

• Structure: The stator is a coil and the rotor is a permanent magnet.
• Commutation method: Electronic commutation (controller senses rotor position).

2. Performance comparison: brushless motor vs. brush motor

characteristic	brushed motor	Brushless motor
efficiency	Lower efficiency, more energy loss	Higher efficiency, and excellent energy utilization
maintenance requirements	Carbon brushes need to be replaced regularly and maintenance costs are high.	Almost no maintenance required and longer lifeNoise level
Noise level	Noise is produced due to carbon brush friction, especially when running at high speeds.	Smooth operation and extremely low noise power density
Power density	Low power density, not suitable for high-performance requirements	High power density, able to meet a variety of riding needs cost
cost	manufacturing cost is low and the vehicle price is relatively cheap	manufacturing costs are higher and the initial purchase price is slightly more expensive
reliability	Wear of carbon brushes reduces stability	Almost no mechanical wear and strong reliability applicable scenarios
Applicable scenarios	Suitable for short-distance, low-speed riding needs	Suitable for a variety of scenarios, including long-distance, high-speed, and hill-climbing needs

3. Analysis of advantages and disadvantages

1. Advantages and disadvantages of brushed motors

• advantage:

1. The manufacturing technology is mature and the production cost is low.
2. The circuit structure is simple and easy to control and maintain.

• shortcoming:

1. Wear of the carbon brushes leads to a shorter service life and requires frequent replacement.
2. The efficiency is low and the battery life is average.
3. It’s noisy and the riding experience isn’t quiet enough.

2. Advantages and Disadvantages of Brushless Motors

• advantage:

1. High efficiency, better energy conversion rate, and longer cruising range.
2. It requires almost no maintenance and has a lifespan of tens of thousands of hours.
3. Smooth operation and low noise improve riding comfort.
4. The power density is high and can support high-speed riding and complex terrain riding.

• shortcoming

1. The initial cost is high and it needs to be used with an electronic controller.
2. Maintenance is more complex and requires higher technical requirements.

4. Which motor is suitable for electric bicycles?

Suitable for scenarios where brushed motors are used

• Consumers on a budget: brushed motors often have lower overall vehicle prices.
• Short-distance riding needs: If your use is less frequent, or just for short commutes, brushed motors are an economical choice.

Suitable for scenarios where brushless motors are used

• Long-distance riding or frequent use: Brushless motors are more efficient and have strong endurance, making them suitable for users who need to ride for long periods of time.
• Diverse riding needs: In scenarios such as mountain biking, hill climbing, and high-speed commuting, brushless motors perform better.
• Focus on riding experience: The low noise and high reliability of brushless motors are very suitable for consumers who pursue comfortable riding.

5. Selection of Keteles electric bicycles

Keteles' electric bicycles are always consumer-oriented and use high-quality brushless motors to bring users a more efficient and smoother riding experience. The following are the advantages of Keteles electric bicycles using brushless motors:

• High-performance motor: Provides powerful power to easily handle various terrains.
• Long driving range: High energy efficiency design allows you to ride farther on a single charge.
• Low maintenance costs: The brushless design reduces mechanical wear and lowers subsequent maintenance costs.

6. Tips when choosing an electric bicycle motor

1. Choose the right motor type for your needs. If your budget is tight, consider brushed motors. If you need better performance, brushless motors are a better option.
2. Pay attention to the motor power. Choose 800W-1500W for city commuting. Higher power is needed for mountain biking and long trips.
3. Pay attention to motor brand and quality: high-quality motors not only enhance the riding experience but also extend the life of the vehicle.

Summary: Choose the motor that suits you and enjoy a better riding experience

Whether it is a brush motor or a brushless motor, each has its own applicable scenarios and characteristics. For consumers who pursue higher efficiency and lower maintenance costs, brushless motors are undoubtedly the first choice for electric bicycles. Keteles' electric bicycles, with their superior brushless motor design, are committed to providing the best experience for every rider. If you are looking for an electric bike that is both efficient and reliable, check out the Keteles official website to find your perfect partner!