Battery Storage Structure With Separate Overhang Member
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Solution Overview
Problem
Existing battery storage structures require hole formations in the bottom surface for mold arrangement, which can lead to liquid leakage into other components when the battery leaks or seeps, potentially damaging electrical circuits.
Innovation Solution
A battery storage structure design that includes a separate member with an overhang portion positioned on the first direction side of the contact portion, protruding toward the inner side of the peripheral wall, eliminating the need for hole formations in the bottom surface and preventing liquid leakage into other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a hole portion is formed in the bottom surface to arrange the mold for forming the battery fixing portion and overhang portion, then the manufacturing process can be simplified, but liquid leakage into other components occurs when the battery leaks or seeps
Solution Approach 1:
The patent divides the battery storage structure into separate components: the battery storage portion and the battery fixing portion are formed as separate entities that are assembled together. This segmentation eliminates the need for hole portions in the bottom surface, as the fixing portion is attached separately, thereby preventing liquid leakage paths while maintaining manufacturing feasibility through modular production.
Solution Approach 2:
The overhang portion is extracted from the integrated mold design and formed as a separate feature on the battery fixing portion. This allows the overhang portion to be positioned precisely to prevent reverse connection without requiring hole formations in the battery storage portion, thus eliminating the liquid leakage risk while maintaining the protective function.
2Productivity
If the battery fixing portion and overhang portion are formed integrally with the battery storage portion using a single mold, then manufacturing steps are reduced, but hole portions must be formed in the bottom surface which compromises structural integrity and allows liquid leakage
Solution Approach 1:
The battery storage portion and battery fixing portion are segmented into separate manufacturable units with standardized interfaces. This allows each component to be manufactured using optimal processes without compromising overall assembly efficiency, while maintaining structural integrity by eliminating hole portions that would weaken the bottom surface.
Solution Approach 2:
While the battery storage portion and fixing portion are manufactured separately, they are merged through precise assembly mechanisms that ensure reliable connection. The peripheral wall portion of the battery storage portion engages with the battery fixing portion, creating a unified structure that maintains structural integrity without requiring hole formations.
3Reliability
If the overhang portion is formed to prevent reverse connection of battery electrodes, then battery safety is improved, but the mold arrangement requires hole portions in the bottom surface that create liquid leakage pathways
Solution Approach 1:
The overhang portion is extracted as a distinct feature on the battery fixing portion rather than being integrated into the battery storage portion. This extraction allows the overhang to perform its safety function of preventing reverse connection while being positioned away from the bottom surface, thereby eliminating the creation of liquid leakage pathways through hole portions.
Solution Approach 2:
The battery fixing portion acts as an intermediary component between the battery storage portion and the battery. It provides the overhang portion for safety protection while maintaining a sealed interface with the storage portion, thus preventing liquid leakage to external components while ensuring battery safety through reverse connection prevention.
Data Source
AI summary
A battery storage structure includes a battery storage portion, a battery terminal, a separate member, and an overhang portion. The battery storage portion includes a bottom surface portion and peripheral wall portion extending from the perimeter of the bottom surface portion in a direction that intersects with the bottom surface portion and forms a first opening. The battery terminal has a contact portion and is supported by the peripheral wall portion. The separate member is formed as a separate body from the battery storage portion. The overhang portion is provided on the separate member, is positioned on a first direction side with respect to the contact portion, and protrudes toward an inner side of the peripheral wall portion in a second direction. The first direction is a direction from the bottom surface portion toward the first opening. The second direction is a direction that intersects the first direction.