Hard-Shell Suitcase Battery Compartment with External Access
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Solution Overview
Problem
Existing hard-shell cases with batteries are cumbersome to replace, especially when filled with items, due to the time-consuming process of accessing and removing the battery from inside the case, and there is a risk of battery degradation and ignition, particularly with lithium-based batteries, which requires removal before air travel.
Innovation Solution
A hard-shell case design with an external opening for easy battery insertion and a receiving compartment featuring a support plate with a restoring force and holding means that securely holds the battery in place, allowing for effortless removal and replacement without redesigning existing case models, along with a pivotable flap for protection and charging access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is mounted inside the case, then the battery is protected and integrated, but replacing the battery becomes cumbersome especially when the suitcase is filled with items
Solution Approach 1:
The internal space of the suitcase is segmented into a main storage compartment and a separate battery compartment. The battery compartment is accessible via an external opening, allowing the battery to be replaced independently without disturbing items in the main compartment. This segmentation resolves the contradiction by providing both protection (through dedicated compartment) and ease of replacement (through independent access).
Solution Approach 2:
A retaining means acts as an intermediary mechanism between the battery and the suitcase structure. This retaining means can be released to allow easy removal of the battery through the external opening, while still providing secure holding when engaged. The intermediary mechanism enables both secure mounting and easy replacement without requiring full disassembly of the suitcase.
2Ease of repair
If the battery is easily replaceable, then maintenance is simplified, but the structural complexity increases
Solution Approach 1:
The suitcase structure is divided into modular components: the main case, the battery compartment, and the retaining means. This modular segmentation allows the battery replacement function to be achieved through simple, standardized components rather than complex integrated mechanisms. Each component performs a single function, reducing overall structural complexity while enabling easy battery replacement.
Solution Approach 2:
The battery replacement function is extracted from the main suitcase structure and implemented through a separate, dedicated battery compartment with its own retaining means. This extraction allows the replacement mechanism to be simplified and standardized, reducing the complexity burden on the overall suitcase design while maintaining ease of repair.
3Reliability
If the support plate exerts holding force on the battery, then the battery is securely held, but the support plate and guide elements experience increased stress
Solution Approach 1:
The holding function is distributed to multiple localized elements rather than concentrated on the support plate alone. The retaining means, with its specific engagement features, provides localized holding force at the battery interface, while the support plate provides distributed support. This distribution of holding function reduces stress on any single element, particularly the support plate and guide elements.
Solution Approach 2:
The support plate and retaining means work together as a combined holding system. The support plate provides baseline support and positioning, while the retaining means provides additional securing force. This merging of functions allows the system to achieve reliable battery holding without requiring excessive force from any single component, thereby reducing stress on the support plate and guide elements.
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
Facilitates easier handling and replacement of batteries, enhances battery longevity through shock absorption, and provides secure protection and charging capabilities while preventing theft and damage.
Implementation Method 1
the support plate is subjected to a restoring force via at least one restoring element, the restoring force being directed against the insertion direction
Implementation Method 2
The restoring element is especially designed such that the support plate dampens the battery against vibrations
Implementation Method 3
the holding element is subjected to a holding force that is directed transversely, and preferably perpendicularly, to the insertion direction
Data Source
Figure 1
Figure 2a~2b
AI summary
The invention relates to a hard-shell suitcase that comprises two hard shells, a first hard shell having a receiving compartment in which a rechargeable battery is received for charging an external electrical device, characterised in that said first hard shell comprises an outer opening through which the battery can be inserted in an insertion direction into the receiving compartment, wherein said receiving compartment comprises a holding means that detachably and form-fittingly holds the battery in the receiving compartment when in a closed position.