Electric Motorcycle Frame Assembly Integrating Battery and Motor Support
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Solution Overview
Problem
Conventional motorcycle frames made of steel tubes are heavy, cumbersome to manufacture, limit battery size and capacity, and reduce motorcycle endurance due to welding and suspension of the battery, leading to increased energy consumption and poor performance.
Innovation Solution
A frame assembly for electric motorcycles integrates the battery and motor as structural members, omitting additional frame components, using aluminum alloy frames, and employing detachable connections for modular assembly, enhancing weight reduction, manufacturing simplicity, and endurance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel tube frame is used to suspend the battery and motor, then the frame provides sufficient structural strength and bearing capacity, but the frame becomes heavy and increases energy consumption
Solution Approach 1:
The patent combines the frame structure with the battery and motor components into an integrated assembly. The battery box and motor are mounted directly to the frame in a unified structure, eliminating the need for separate suspension mounts and reducing overall frame weight while maintaining bearing capacity.
Solution Approach 2:
The frame is designed to serve multiple functions simultaneously: it provides structural support, mounts the battery and motor, and acts as part of the overall powertrain assembly. This multi-functionality reduces the need for additional dedicated components, lowering weight while maintaining strength.
2Strength
If welding is used to manufacture the steel tube frame, then the frame achieves high structural integrity, but the manufacturing process becomes cumbersome and complex
Solution Approach 1:
The frame is divided into modular segments including the battery box, motor mount, and frame tubes that can be manufactured separately and then assembled through simple connections rather than complex welding operations. This segmentation maintains structural integrity while simplifying manufacturing.
Solution Approach 2:
The patent introduces simplified connection elements and mounting brackets that serve as intermediaries between frame components, replacing direct welding operations with easier-to-implement mechanical connections that maintain structural integrity while reducing manufacturing complexity.
3Strength
If the battery is suspended separately on the frame, then the frame provides mounting support, but the available space for the battery is limited and its capacity is reduced
Solution Approach 1:
The battery box is integrated into the frame structure itself rather than being mounted as a separate suspended component. This merging of the battery housing with the frame structure maximizes the use of available space within the motorcycle body, allowing for a larger battery capacity while the frame continues to provide necessary mounting and support functions.
Data Source
AI summary
The present disclosure provides a frame assembly of an electric motorcycle and the electric motorcycle. The frame assembly includes a first frame, a second frame, a battery, and a motor, where the first frame and the second frame are respectively mounted to the battery from a first side and a second side of the battery; the motor is mounted to the battery and/or the second frame from the second side; and the first side and the second side are opposite sides of the battery. By at least partially integrating a power system and a bearing system of the electric motorcycle together, the present disclosure can simplify an internal structure and a manufacturing cost of the electric motorcycle.