Dual-Motor Power Transmission With Clutched Torque Boost
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electric motors in consumer vehicles lack the necessary torque to power large commercial vehicles efficiently, requiring larger and heavier motors that increase energy consumption.
Innovation Solution
A multiple electric motor system with a first motor always connected to the output drive shaft and a second motor with an intermittent connection, using a clutch to engage and disengage, allowing for adaptive torque application and efficient power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If larger and heavier electric motors are used to produce enough torque for large commercial vehicles, then torque output is improved, but energy consumption increases
Solution Approach 1:
The powertrain is divided into multiple electric motors (first motor, second motor, third motor) that can operate independently or in combination. This segmentation allows the system to distribute the torque production across multiple smaller motors rather than relying on a single large motor, thereby achieving the required torque output while maintaining lower individual motor sizes and reduced energy consumption.
2Power
If multiple electric motors are used to provide adaptive torque application, then power delivery is improved, but device complexity increases
Solution Approach 1:
Each electric motor in the system is designed to be multi-functional, capable of providing torque independently or in combination with other motors. The motors can serve multiple purposes including propulsion, torque vectoring, and redundancy, which simplifies the overall control architecture despite having multiple motors, as each motor can perform various functions rather than requiring specialized components for each function.
Data Source
AI summary
An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. In one form, the first electric motor and second electric motor are the same type of electric motor, and in another form, the first electric motor and second electric motor are different types of electric motors.