Electric Vehicle Battery Case Lifting Handle and Retention
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Solution Overview
Problem
Existing personal mobility electric vehicles face complexity in battery retention structures, requiring a simpler and more convenient method for detachable battery retention that also allows for easy lifting and handling.
Innovation Solution
A compact battery case with an integrated latching structure and gripping space within the vehicle body frame, featuring a slanted wall for stable battery placement and guide slots for effortless installation and removal, combined with a handle for lifting, preventing inadvertent latching operation during vehicle handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pivoted lid is provided to close the battery case opening, then the battery can be retained in the battery case, but the battery retaining structure becomes complicated
Solution Approach 1:
The patent removes the pivoted lid component entirely and replaces it with a direct engagement mechanism where the battery case opening selectively engages the battery. This extraction of the unnecessary lid element simplifies the overall structure while maintaining the battery retention function through the engagement opening and engagement projection interaction.
Solution Approach 2:
The engagement opening in the battery case serves multiple functions: it provides structural support, enables selective engagement with the battery, and eliminates the need for a separate lid mechanism. This multi-functional design consolidates several roles into a single component, reducing overall complexity while ensuring reliable battery retention.
2Ease of manufacture
If the lower part of the battery is supported with a simple structure, then manufacturing is easier, but a latching structure is required to secure the upper part against vibrations and impacts
Solution Approach 1:
The patent combines the support and latching functions into a single integrated engagement mechanism. The engagement opening and engagement projection work together to simultaneously support the battery's lower part and latch the upper part, eliminating the need for separate latching components while maintaining security against vibrations and impacts.
Solution Approach 2:
The engagement mechanism is segmented into distinct functional zones: the engagement opening provides both support and latching surfaces, while the engagement projection provides both positioning and securing functions. This segmentation allows each component to be simple in form while achieving multiple functions through strategic design.
3Ease of operation
If a handle for lifting the vehicle is provided, then the vehicle can be lifted for transportation, but the vehicle structure becomes more complex
Solution Approach 1:
The patent merges the lifting handle with the battery case structure, creating a multi-functional component that serves both as the battery housing and as the lifting mechanism. This integration eliminates the need for a separate handle component, reducing structural complexity while maintaining ease of operation for vehicle lifting and battery removal.
Solution Approach 2:
The battery case is designed with universal functionality, serving as both the battery containment structure and the lifting handle. This multi-functional design allows the same component to fulfill multiple roles: structural support, battery retention, and user interaction for lifting and battery removal, thereby minimizing the total number of parts.
4Ease of operation
If the gripping space is designed to receive the hand for lifting, then the vehicle can be lifted conveniently, but the structure requires more space
Solution Approach 1:
The patent utilizes the vertical dimension and the existing opening structure to create the gripping space, rather than adding horizontal extensions. The engagement opening and upper surface of the battery define a vertical gripping zone that accommodates the hand without significantly increasing the overall volume of the battery case, maintaining compact dimensions while enabling convenient hand gripping.
Data Source
AI summary
An electric vehicle is provided with a highly simple and convenient structure for detachably retaining a battery, and enabling the vehicle to be lifted by hand. A battery case of the electric vehicle includes an upper extension (80F, 80G) including an upper member (80G) configured to be gripped by a hand for lifting the vehicle, and defining a gripping space (112) for receiving the hand between an upper surface of the battery received in the battery case and the upper member, and a latching structure (102, 106, 120) is provided between an upper part of the battery and an opposing part of the battery case, the latching structure including an operating member (104) positioned inside the gripping space.