Battery Pack Stopper Structure for Disassembly Detection
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Solution Overview
Problem
Existing battery packs lack a mechanism to prevent arbitrary disassembly by users, which can lead to safety hazards and compromise product performance, making it difficult to validate product warranties.
Innovation Solution
A battery pack design featuring a stopper with a rupture portion that breaks when tension is applied, allowing easy detection of disassembly, coupled with a through-hole having varying inner diameters to secure the stopper in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a stopper is added to cover the coupling portion, then the aesthetics of the product is enhanced, but the ability to detect arbitrary disassembly is compromised
Solution Approach 1:
The stopper is divided into a main body and a separate detection element (protrusion or marker). The detection element can be positioned to indicate disassembly status while the main body maintains aesthetic coverage of the coupling portion.
Solution Approach 2:
A detection element serves as an intermediary between the stopper and the disassembly detection system. This element can be visually observed or mechanically sensed to indicate whether disassembly has occurred, without compromising the aesthetic function of the stopper.
2Reliability
If the battery pack is designed to be securely assembled, then safety is improved, but ease of legitimate repair and replacement is reduced
Solution Approach 1:
The fastening system incorporates a dynamic detection mechanism that changes state based on disassembly actions. The stopper or detection element is designed to respond differently to legitimate disassembly (with proper tools/sequences) versus arbitrary disassembly (without proper authorization), allowing both safety and repairability.
Solution Approach 2:
The detection system uses parameter changes (such as position, orientation, or physical state of the stopper/detection element) to distinguish between authorized and unauthorized disassembly. Authorized disassembly follows specific parameters or sequences that preserve the detection element's integrity, while arbitrary disassembly causes detectable parameter changes indicating warranty voiding.
3Measurement precision
If a detection mechanism is added to the stopper, then the ability to validate warranty is improved, but device complexity increases
Solution Approach 1:
The stopper or detection element is designed to automatically indicate disassembly status through its own physical state or position, without requiring additional sensors, electronics, or complex detection systems. The structure itself serves as the detection mechanism, reducing overall device complexity while maintaining accurate warranty validation capability.
Data Source
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AI summary
Disclosed is a battery pack including a case body having an inner space configured to receive a plurality of battery cells, a lower case coupled to the bottom of the case body, a through-hole in the lower case, and a stopper covering the through-hole, wherein the stopper includes a rupture portion configured to rupture when tension is applied from the outside of the lower case. It is possible to determine whether a user has arbitrarily disassembled the battery pack by checking whether the rupture portion has ruptured.