Multi-Axis Support Apparatus for Electric Axle Torque Offset
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Solution Overview
Problem
The integration of an electric motor as a power source with an electric axle in hybrid and electric vehicles often results in an undesired torque due to the center of mass being offset from the rotational axis, necessitating a support apparatus that minimizes cost and weight while allowing for load offset.
Innovation Solution
A support apparatus is designed to be coupled to the vehicle's frame, permitting the load to translate along multiple axes via pivot axes and connecting members, aligning with the axle's pivot axis and the suspension system's pivot axis, allowing for movement along the x, y, and z axes, thus accommodating the offset load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electric motor is fully integrated into the electric axle, then the power source integration is improved, but undesired torque is generated due to center of mass offset
Solution Approach 1:
A support apparatus is introduced as an intermediary component between the electric axle and the vehicle frame. This support apparatus includes positioning members and connecting members that collectively provide a pivot axis, serving as a mediator to counterbalance the offset center of mass of the integrated electric motor and axle assembly, thereby eliminating undesired torque while maintaining the integrated power source configuration
2Object-generated harmful factors
If a support apparatus is added to counterbalance the offset load, then undesired torque is reduced, but device complexity increases
Solution Approach 1:
The support apparatus merges multiple functions into a unified structure. The positioning member and connecting member are combined to collectively form the pivot axis, eliminating the need for separate counterbalancing mechanisms. This integrated approach provides torque reduction while maintaining relatively simple device complexity through functional consolidation
3Adaptability or versatility
If the support apparatus allows load translation along multiple axes, then adaptability to suspension movement is improved, but manufacturing complexity increases
Solution Approach 1:
The support apparatus employs a dynamic pivot axis mechanism that naturally adapts to multi-axis load translation through rotational freedom. The positioning member and connecting member are configured to allow the load to translate along x, y, and z axes while the pivot axis rotates accordingly. This dynamic configuration achieves high adaptability to suspension movement without requiring complex multi-axis mechanical guides or active control systems, thereby maintaining ease of manufacture
Data Source
AI summary
A vehicle including a frame having an axle and a support apparatus coupled thereto. The support apparatus is configured to support a load coupled to the axle and permit the load to translate along an x-axis, a y-axis, and a z-axis.