Electric Vehicle Frame Integrating Battery Mounting
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Solution Overview
Problem
The challenge in electric vehicle design is to securely and efficiently package batteries and associated components without compromising vehicle balance, storage space, and safety, while addressing the issues of theft and vibration, given the bulkiness and high cost of batteries and the need for even weight distribution.
Innovation Solution
A frame assembly with cross members and locking mechanisms securely mounts the battery module, providing vibration isolation and theft protection, with a design that optimizes weight distribution and space usage, eliminating the need for a separate battery box and allowing for compact packaging and easy access for charging or swapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate battery box is used to securely mount the battery, then battery security and vibration protection are improved, but vehicle space (floor space, leg space, storage space) is compromised
Solution Approach 1:
The patent merges the battery mounting function directly into the vehicle frame structure by providing mounting plates that are integrally formed with or securely attached to the frame members. The battery is mounted directly to these frame-integrated mounting plates, eliminating the need for a separate battery box while maintaining secure mounting and vibration protection.
2Stability of the object's composition
If the battery is positioned toward the downward side to shift the centre of gravity, then vehicle handling and safety are improved, but the swing arm length increases and overall vehicle length increases
Solution Approach 1:
The patent positions the battery in the vertical dimension (downward side) to shift the centre of gravity, while the frame structure is designed with adjustable geometry to accommodate this positioning without proportionally increasing the horizontal length. The mounting system allows vertical adjustment of battery position to optimize CG without linearly increasing vehicle length.
3Quantity of substance
If larger capacity batteries are used to increase vehicle range, then vehicle capacity is improved, but battery size and bulkiness increase
Solution Approach 1:
The patent designs the frame structure with nested or space-efficient mounting arrangements where the battery is tightly integrated into the frame geometry. The mounting plates and frame members are configured to maximize space utilization, allowing larger capacity batteries to be accommodated within the available vehicle space by efficiently nesting the battery within the frame structure.
4Stability of the object's composition
If the swing arm is shifted backward to accommodate downward battery positioning, then centre of gravity is improved, but overall vehicle length increases
Solution Approach 1:
The patent employs asymmetric frame geometry where the mounting plates are positioned at different locations and orientations on the frame members. This asymmetric configuration allows the battery to be positioned downward to improve CG while the frame structure compensates through uneven distribution of mounting points, preventing proportional increases in vehicle length.
Data Source
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AI summary
A frame for an electric vehicle (10) comprising: a head pipe (12) and at least two rear tubes (13) extending rearwardly from the head pipe (12); an electric battery module (24) used as a power source for powering the electric vehicle comprising at least one battery located below rear portion (13B) of said rear tubes (13); a protective frame structure (23) for securely mounting said battery module (24); wherein said protective frame structure (23) is fixed to said rear tubes (13) of said frame and provided substantially centrally and downwardly of said vehicle (10).