Electric Bicycle ECU Mounting via Generator Housing
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Solution Overview
Problem
The existing installation structures for electronic control units (ECUs) in electric bicycles are complex and require separate fixing brackets, which complicate the integration into the frame and do not adequately protect the ECU from damage while maintaining a streamlined exterior appearance.
Innovation Solution
The ECU is directly fixed to the upper portion of the generator, which is positioned between the front and rear wheels, using a mounting unit that is integrally formed with the generator's cover, allowing for stable integration within the frame without a separate fixing structure, and utilizing heat-discharging materials for the side and bottom panels to enhance protection and heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate fixing bracket is installed to prevent movement of the ECU built in at the frame, then the ECU is protected from movement, but the installation structure becomes complicated
Solution Approach 1:
The patent merges the fixing bracket function with the generator housing by integrating a mounting protrusion directly into the generator cover. This eliminates the need for a separate fixing bracket while maintaining the ECU's stable installation, directly resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The generator housing is given multiple functions: it not only houses the generator components but also provides the mounting structure for the ECU through the integrated protrusion. This multi-functionality reduces the overall number of components needed while ensuring secure ECU installation.
2Reliability
If the ECU is built in at the frame for protection, then the ECU is protected from damage, but the exterior appearance is hindered
Solution Approach 1:
The ECU is nested within the generator housing structure, specifically positioned at the lower end of the center frame where it is protected by the frame's hollowity shape. The mounting protrusion integrates the ECU into the existing generator housing, providing protection while maintaining a streamlined exterior appearance.
3Volume of moving object
If the ECU is installed at a small space inside the frame, then the frame structure is utilized, but the installation becomes complicated
Solution Approach 1:
The mounting protrusion is integrated directly into the generator housing, combining the mounting function with the existing structural components. This eliminates the need for separate fixing brackets and simplifies the installation process while effectively utilizing the limited space within the frame's hollowity.
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
This solution simplifies the installation of the ECU and provides effective protection against damage while maintaining a streamlined design, enhancing the structural integrity and heat management of the electronic control unit.
Implementation Method 1
The side panel and the bottom panel may be provided with the same heat-discharging material
Data Source
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AI summary
An electric bicycle having an enhanced fixing structure of an electronic control unit (70), the electrical bicycle having an electronic control unit (70) built in an a center frame (200) along with a generator (210) in a state of the electronic control unit (70) is directly fixed at an upper portion of the generator (210), the electronic control unit (70) is effectively be protected, as the fixing structure of the electronic control unit (70) is simplified.