Integrated Motor Controller Module for Coordinated Speed and Heat Dissipation
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Solution Overview
Problem
Conventional outdoor power equipment lacks coordinated control between multiple motor controllers, leading to inefficiencies in operation, particularly in managing drive motor speeds and chore motor functions, which affects performance and energy efficiency.
Innovation Solution
A distributed motor controller system that includes a drive motor controller and a chore motor controller, where the chore motor controller receives operational states from the drive motor controller to synchronize the operation of chore motors with drive motors, and incorporates sensors to adjust motor speeds based on surface inclines, ensuring optimal performance and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple motor controllers operate independently without communication, then device complexity is reduced, but operational efficiency and coordination between motors deteriorate
Solution Approach 1:
The patent combines multiple motor controllers into a single integrated controller module that manages both drive motors and chore motors. This consolidation allows centralized coordination of all motors while maintaining a compact design, resolving the contradiction by merging control functions rather than using separate independent controllers.
Solution Approach 2:
The integrated motor controller is designed to perform multiple functions: controlling drive motors for movement and chore motors for auxiliary functions. This multi-functional controller achieves both reduced complexity and improved operational efficiency by coordinating all motor operations from a single control unit.
2Volume of moving object
If motor controllers are placed close together in a compact enclosure, then device size is reduced, but heat dissipation capability deteriorates
Solution Approach 1:
The patent applies different thermal management characteristics to different regions within the controller enclosure. The enclosure is configured with specific thermal properties in areas where motor controllers are mounted, allowing heat to dissipate effectively from high-heat-generating components while maintaining overall compactness. This local differentiation of thermal characteristics resolves the contradiction between compact size and heat dissipation.
3Device complexity
If chore motor controllers operate without information from drive motor controllers, then communication complexity is reduced, but performance coordination and energy efficiency deteriorate
Solution Approach 1:
The patent merges the communication functions into the integrated controller module, allowing drive motor controllers and chore motor controllers to exchange operational information through internal communication pathways. This centralized communication approach enables coordinated energy management without requiring complex external communication systems.
Solution Approach 2:
The integrated controller implements feedback mechanisms where drive motor operational states are communicated to chore motor controllers, enabling real-time coordination. This feedback loop allows the system to optimize energy usage by coordinating motor operations based on actual operational conditions, resolving the contradiction between communication simplicity and energy efficiency.
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
The system enables coordinated control of multiple motors, improving operational efficiency, maintaining performance on uneven surfaces, and optimizing energy usage by synchronizing drive and chore motor speeds, thus enhancing the overall functionality of outdoor power equipment.
Implementation Method 1
The first side of the PCB is positioned adjacent to the inner wall of the enclosure to allow heat generated by the motor controller to dissipate via the enclosure
Data Source
AI summary
A controller module includes an enclosure including an inner wall defining a volume, a plurality of motor controllers, each motor controller comprising a printed circuit board (PCB) having a first side and a second side opposite the first side, a plurality of transistors located on the first side, and a plurality of outputs located on the second side. The first side of the PCB is positioned adjacent to the inner wall of the enclosure to allow heat generated by the motor controller to dissipate via the enclosure.