Battery Pack Attachment Member Restricting Member Design
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Solution Overview
Problem
Existing battery pack designs face issues where attachment members, such as pressure regulating valves, can deform and come off due to impacts, requiring additional operation spaces and complex attachment methods to prevent detachment, which complicates manufacturing and safety.
Innovation Solution
Incorporating a restricting member, either separate from the exterior case or integrally within it, to limit the movable range of claw portions on the attachment members, ensuring they do not deflect inward and securely attach to the case, thus preventing detachment during impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a claw portion is used to attach an attachment member to a case, then the attachment member can be securely fixed, but the claw portion deforms by impact and the attachment member comes off and falls off
Solution Approach 1:
The patent introduces a restricting member that prevents the claw portion from deflecting inward before impact occurs. This restricting member acts as a preventive measure, limiting the movement range of the claw portion to within a safe range where it will not come off the case even when impact is applied, thereby cushioning against the potential failure mode
2Reliability
If a rotating operation is required to attach the attachment member, then the attachment member can be securely fixed, but an operation space for rotating the claw portion is required
Solution Approach 1:
The patent extracts the rotation operation from the attachment process. By designing the attachment member and restricting member to work together in a simple insertion manner without requiring rotation, the operation space requirement is eliminated while maintaining attachment security through the restricting member's prevention of claw portion over-deflection
3Reliability
If a complex attachment method with multiple operation steps is used, then the attachment member can be securely fixed, but the manufacturing complexity increases
Solution Approach 1:
The patent segments the attachment system into distinct functional components: the attachment member with claw portions, the case with receiving portions, and the restricting member. This segmentation allows each component to have a simple, dedicated function, reducing overall system complexity while maintaining security through the coordinated action of these segmented parts
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 reliably prevents attachment members from coming off the case, maintaining structural integrity and simplifying the attachment process by eliminating the need for multiple operation steps, such as rotation, and reducing manufacturing complexity.
Implementation Method 1
the restricting member is an elastically deformable rib
Data Source
AI summary
An attachment member is prevented from coming off from an exterior case. Disclosed is a battery pack including: an exterior case; a battery unit; and an attachment member attached from outside of the exterior case, in which the attachment member has a plurality of claw portions, the attachment member is attached to the exterior case by the plurality of claw portions, a restricting member that restricts a movable range of the claw portion is provided inside the exterior case, and the restricting member is configured as a member separate from the exterior case.