Two-wheeled electric scooter
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Two-wheeled electric scooter
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Two-wheeled electric scooter
Electric bicycles are environmentally friendly and affordable, and are growing in popularity worldwide. Due to space constraints, the core component—the battery management system (BMS)—must be carefully designed to maximize efficiency and safety.
Current Market Conditions

Effective power management requires intelligent BMS design. Electric bicycles use battery and BMS technology similar to that found in electric cars—but with limited space. This is precisely where a well-thought-out BMS design comes into play. The battery management system performs many critical tasks, including maximizing power output


Application Considerations
To ensure reliability and protect battery life, design engineers should consider the following factors when developing BMS solutions for electric bicycles. Battery chemistry
Battery chemistry
Lithium-ion batteries may use lithium iron phosphate (LiFePO₄) to achieve exceptional cycle life and inherent safety, while nickel-manganese-cobalt oxide (NMC) batteries offer higher energy density but require more precise monitoring.
Efficiency
Minimizing energy consumption helps extend battery life and increase the range per charge.
Short-Circuit Protection
Detecting and isolating short circuits is critical for safe operation.
Power Management
The battery protection MOSFET implements cell balancing to redistribute uneven charges, ensuring that each cell reaches its optimal voltage.
Thermal Performance
Effective heat dissipation and thermal management are essential for maintaining safety and reducing energy loss.
Component Size
Due to limited space for electronic components in electric bicycles, all components should be compact and have high power density.
Low RDS(on)
Low on-resistance enables efficient switching and reduces heat generation, thereby protecting the battery.
Battery Reverse Polarity Protection
Measures must be in place to address damaged and potentially hazardous reverse polarity.
Compliance
In certain markets, electric bicycle components must comply with strict requirements, such as UL 2849, IEC 62133, EN 15194, etc.
EMI/ESD Protection
Protecting the system from electrostatic discharge, electromagnetic interference, and overvoltage is a top priority.
Reliability Under Harsh Conditions
All BMS components must be able to withstand extreme temperatures, humidity, and moisture.
Block Diagram

Recommended Products
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Serial number
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Data Sheet
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