Electric Motor Mounting Assembly Torque Distribution
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Solution Overview
Problem
Conventional motor mount designs for combustion engines are inadequate for securing electric motors due to differences in force distribution and torque generation, as they do not effectively handle the increased torque and unbalanced loads of electric motors.
Innovation Solution
A motor mounting assembly comprising a transversely oriented front cross member, a motor compartment cross member, and a motor mount member that extends between them, with additional auxiliary mounts for enhanced stability, allowing for secure attachment of the electric motor to the vehicle frame, distributing loads more evenly and counteracting the torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single cross-member mounting design is used for electric motors, then the structure is simple and easy to manufacture, but the motor cannot be securely held due to inadequate force distribution
Solution Approach 1:
The motor mounting system is segmented into multiple independent mounting points distributed across the vehicle frame. Instead of relying on a single cross-member, the patent uses multiple mounting locations that independently bear and distribute the motor's forces, improving reliability while maintaining manufacturing simplicity through modular attachment points.
Solution Approach 2:
The mounting structure transitions from a single-plane cross-member design to a three-dimensional distributed mounting system. Mounting points are positioned at different locations and orientations throughout the motor compartment, creating a spatial force distribution network that better handles the multi-directional forces generated by electric motors.
2Adaptability or versatility
If conventional combustion engine mounting structures are used, then the design is well-established and easy to implement, but the structures cannot effectively handle the increased torque and unbalanced loads of electric motors
Solution Approach 1:
The mounting structure implements local quality enhancement by positioning specific mounting points and structural reinforcements at locations optimized for handling electric motor forces. Rather than uniformly strengthening the entire mounting system, the patent applies enhanced structural properties locally at critical mounting points where torque and unbalanced loads are most pronounced.
Solution Approach 2:
The design parameters of the mounting structure are changed to accommodate electric motor characteristics. This includes modifying mounting point locations, adjusting structural geometry, and optimizing material distribution to handle the different force magnitudes and directions generated by electric motors compared to combustion engines.
3Reliability
If a distributed mounting system is implemented for electric motors, then the torque and forces are effectively distributed and managed, but the structural complexity increases
Solution Approach 1:
The mounting structure employs universal multi-functional components that serve multiple purposes. The same mounting points and structural elements are designed to simultaneously handle various types of forces (torque, vibration, gravitational loads) and support different motor configurations, reducing overall complexity despite the distributed nature of the mounting system.
Data Source
AI summary
An electric vehicle includes a right side member and a left side member with a motor compartment disposed therebetween, a motor compartment cross member extending transversely across the motor compartment, the motor compartment cross member coupled to the left side member and the right side member, a front cross member extending transversely across the motor compartment, wherein the front cross member is spaced apart from the motor compartment cross member in a vertical direction, and a motor mount member extending between the front cross member and the motor compartment cross member, wherein the motor mount member is coupled to the front cross member and the motor compartment cross member, the motor mount member comprising an attachment point for receiving a corresponding coupler of an electric motor.