Battery Pack Housing Structure with Protruding Groove Alignment
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Solution Overview
Problem
Existing electronic devices face challenges in housing battery packs due to increased dimensional tolerances, leading to gaps between the battery pack and the housing, which can cause shifts in terminal positions, making it difficult to use the battery pack's contour width for positioning.
Innovation Solution
A battery pack housing structure that incorporates a battery-pack lower-surface protruding portion and a housing-portion bottom-surface groove portion, allowing for precise alignment and connection of terminals without relying on the battery pack's contour width for positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the battery pack size is increased, then the electric power capacity is improved, but the dimensional tolerances are increased causing gaps and terminal position shifts
Solution Approach 1:
The invention divides the positioning function into two independent parts: the battery pack has protruding portions that extend from its housing, and the electronic device has groove portions in its housing. This segmentation allows each component to be manufactured independently with standard tolerances, while the combined protruding-groove structure achieves precise positioning and eliminates the terminal position shifts that occur when relying solely on contour width dimensions.
Solution Approach 2:
The protruding portions and groove portions act as intermediary positioning elements between the battery pack and electronic device housings. These intermediaries bridge the gap created by dimensional tolerances and provide a positive mechanical fit that ensures accurate terminal alignment, eliminating the need for tight tolerance control on the main housing dimensions.
2Quantity of substance
If the battery pack size is increased, then the electric power capacity is improved, but gaps are formed between the battery pack and housing portion
Solution Approach 1:
The positioning structure is segmented into protruding portions on the battery pack and corresponding groove portions in the electronic device housing. This segmentation allows the system to accommodate dimensional variations and gaps while maintaining stable assembly through the positive mechanical interfit of these discrete positioning elements.
Solution Approach 2:
The protruding portions of the battery pack are nested within the groove portions of the electronic device housing. This nesting arrangement provides mechanical guidance and stability, ensuring that the battery pack remains securely positioned within the housing even when gaps exist due to dimensional tolerances in larger battery packs.
3Device complexity
If contour width dimension is used for positioning, then the structure is simplified, but terminal alignment cannot be maintained when dimensional tolerances exceed certain values
Solution Approach 1:
Instead of relying on a single contour width dimension for positioning, the invention segments the positioning function into multiple protruding and groove portions. This segmentation provides redundant positioning points that maintain terminal alignment reliability even when individual dimensions vary within tolerance ranges, without significantly increasing overall structural complexity.
Solution Approach 2:
The invention changes the positioning parameter from a single contour width dimension to a multi-point geometric relationship between protruding and groove portions. This parameter change transforms the positioning system from being sensitive to dimensional tolerances to being robust against tolerance variations, ensuring reliable terminal connection across different manufacturing variations.
Data Source
AI summary
An electronic device and a battery pack housing structure capable of housing a battery pack without use of a contour width of the battery pack for positioning. The battery pack housing structure includes a battery-pack lower-surface protruding portion protruding from a lower surface of the battery pack and the housing portion including a housing-portion bottom-surface groove portion, which is formed in a bottom surface of the housing portion and capable of being fitted to the battery-pack lower-surface protruding portion.