Transmission System Design and Analysis for EV 2026/09/29

Introductions

Designing electric vehicle transmission systems is complex, tailored to the specific vehicle model, chassis, and usage scenarios. It entails customizing component layouts and mechanisms, including the number of gear teeth, gear profile, and gear requirements, to meet product longevity, dimensions, and NVH (noise, vibration, and harshness) standards. This meticulous process is time-intensive and costly.

Technical Advantages and Features

• Accurate Calculation of Gearbox Lifetime: Products are designed with a multibody dynamics model and a design database to achieve mileage lifespans typically between 200,000 and 400,000 kilometers.
• Optimized Gear Design: Gear contact surfaces reduce pressure by up to 20%, extending gear life. Transmission error is reduced by up to 30%. Gearbox noise is reduced by 10 decibels, typically from 50 to 90 decibels with increasing speed.
• Patented Two-Speed Gearbox: Patented two-speed gearbox design, superior to typical single-speed electric vehicle gearboxes, meets real-world road requirements (low/high speed) with gear shifts under 0.4 seconds.
• Custom gear ratios and mechanism solutions are tailored to client specifications for vehicle model and performance.

Industrial Applications and Business Opportunities

• Industry Applications
  • Electric Vehicle and Vehicle Industry.
  • Autonomous and Electric Vehicle.
• Application Examples
  • This technology has been transferred to BATOM and CHENTA, and has also assisted ZEPT, GOGORO, and TDCM in becoming suppliers of power modules and components for electric vehicles, electric motorcycles, and electric-assist bicycles, both domestically and internationally (e.g., TESLA, CMC, GOGORO, BROMPTON).