Detachable Battery Pack Handle Structure for Easy Adhesive Removal
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Solution Overview
Problem
Conventional battery packs require additional materials and processes for manufacturing, increasing costs due to the need for lifting films and adhesives, which complicates the removal process.
Innovation Solution
A battery pack design featuring a handle portion extending from a sealed portion of the battery case, with adhesive coating on some surfaces and engraved recesses to facilitate easy attachment and removal, allowing the battery pack to be detachable from a product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lifting film and adhesive are added to the battery pack, then the battery pack can be attached to the product, but the manufacturing cost increases and the structure becomes more complex
Solution Approach 1:
The sealed portion of the battery case is extended to form a handle portion that integrates both sealing and handling functions. The adhesive is applied only to specific regions (receiving portion and part of handle portion) rather than the entire surface, merging the attachment function with the existing sealed portion structure.
Solution Approach 2:
The adhesive application is segmented into specific regions: the receiving portion and selected areas of the handle portion. This selective segmentation reduces material usage while maintaining attachment reliability in critical areas.
2Reliability
If a lifting film and adhesive are added to the battery pack, then the battery pack can be attached to the product, but the manufacturing process becomes more complex
Solution Approach 1:
The handle portion is formed by extending the sealed portion through thermal fusion, merging the sealing process with handle formation. This eliminates the need for separate lifting film application and reduces the number of manufacturing steps.
Solution Approach 2:
The lifting film, which is an additional separate component in conventional designs, is extracted from the structure. Instead, the handle portion itself serves as the attachment interface, simplifying the manufacturing process by eliminating unnecessary intermediate components.
3Strength
If adhesive is applied to the entire handle portion, then the attachment strength is increased, but the removal process becomes difficult
Solution Approach 1:
The adhesive is applied with local quality variation: fully coated on the receiving portion for strong attachment, but only partially coated on the handle portion (with the first edge left uncoated). This localized adhesive application maintains attachment strength while enabling easy removal by gripping the uncoated edge.
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
Enables easy and cost-effective removal of the battery pack by gripping the handle portion, reducing manufacturing complexity and costs associated with additional materials.
Implementation Method 1
an outer surface of the receiving portion (121) may be coated with an adhesive
Data Source
Figure 1
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Figure 3~4
AI summary
Disclosed is a battery pack including an electrode assembly, an electrode lead extending from the electrode assembly, and a battery case including a receiving portion configured to receive the electrode assembly and a sealed portion sealed along the edge of the receiving portion, wherein a part of the sealed portion extends to form a handle portion.