Disc Motor Rib Reinforcement and Stator Fixing
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Solution Overview
Problem
Conventional axial-flux disc motors are either too bulky and heavy for automotive applications due to their mechanical design, or they lack sufficient torque density, often resulting in structural deformation under high normal forces during operation.
Innovation Solution
A reinforcement structure for disc motors featuring a rib structure and stator fixture, where the rib structure reduces weight and enhances structural integrity, and the stator fixture secures the stators to the shell, preventing deformation and rotor contact during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional axial-flux disc motors are designed with thick and heavy structure for automotive applications, then sufficient torque can be produced, but the motor becomes bulky and heavy
Solution Approach 1:
The motor structure is segmented into multiple functional layers including stator, rotor, and reinforcement ribs, allowing each component to be optimized independently for both strength and weight reduction
Solution Approach 2:
The patent employs composite structural design combining magnetic materials with reinforcement ribs, creating a lightweight yet strong stator assembly that maintains torque capability while reducing overall motor weight
2Weight of stationary object
If the motor is thinned and lightened for automotive applications, then weight and thickness are reduced, but structural deformation occurs under high normal forces
Solution Approach 1:
Reinforcement ribs are added in the radial dimension of the stator structure, providing structural support perpendicular to the magnetic flux path, enabling thin axial design while maintaining radial structural integrity under high normal forces
Solution Approach 2:
Reinforcement ribs are strategically positioned at specific locations within the stator where structural support is most needed, providing localized strengthening without adding unnecessary weight throughout the entire structure
3Stability of the object's composition
If the stator is secured firmly to resist magnetic attraction, then structural integrity is maintained, but the motor becomes more complex
Solution Approach 1:
The reinforcement ribs are integrated directly into the stator structure, merging the structural support function with the magnetic circuit components, thereby maintaining structural integrity while minimizing additional complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the creation of a thinner, lighter axial-flux disc motor capable of producing sufficient torque for automotive applications without structural deformation, maintaining operational smoothness and efficiency.
Implementation Method 1
a plurality of fixing elements; wherein, by inserting the fixing elements into the through holes of the stator via the holes formed on the stator frame
Implementation Method 2
A coil, being disposed winding on the stator; a permanent magnet, mounted on the rotor
Implementation Method 3
the interactions of an electromagnetic field formed from the passing of an electric current through the armatures of the stator and a magnetic field resulting from the permanent magnet of the rotator
Data Source
AI summary
A reinforcement structure for a disc motor being received in the flat space formed at a side of a wheel center for driving the wheel to rotate as it can be activated to perform a rotation movement by the interactions of an electromagnetic field formed from its stators and a magnetic field resulting from its rotator, comprises: a rib structure, arranged inside a shell housing the disc-like stator for enhancing the structure integrity thereof without causing the thickness thereof to increase and thus maximizing the usefulness of the motor's limited space; and a fixing element, for fixing the stators to the inner side of the motor's outer shell for preventing the stators to be deformed by the magnetic force from the permanent magnets mounted on the rotors while preventing the stators from being attracted by the permanent magnets of the rotors, and thus enabling the motor to operate smoothly.