Battery Pack Insulating Tape Between Electrode Tab and Protective Circuit Module
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Solution Overview
Problem
Battery packs face issues of electrical short circuits and physical breakage due to inadequate connection structures between battery cells and protective circuit modules.
Innovation Solution
The battery pack design includes a protective circuit module with a thermal cut-off member and insulating tape between the electrode tab and the module, preventing electrical shorts and physical damage by insulating the connection points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the protective circuit module is directly connected to the battery cell without insulating tape, then the connection structure is simpler, but electrical short circuits may occur between the electrode tab and the protective circuit module
Solution Approach 1:
An insulating tape is introduced as an intermediary component between the electrode tab and the protective circuit module. This tape prevents direct contact between conductive parts, eliminating the risk of electrical short circuits while maintaining a straightforward connection structure.
Solution Approach 2:
The connection structure is segmented into distinct functional zones: the electrode tab area, the insulating tape barrier, and the protective circuit module contact area. This segmentation ensures clear separation between conductive and insulating functions, preventing short circuits.
2Stability of the object's composition
If the thermal cut-off member is placed directly on the terrace without insulation, then the structure is more compact, but physical breakage may occur due to direct contact with the terrace
Solution Approach 1:
The insulating tape serves as a protective intermediary between the thermal cut-off member and the terrace. This prevents direct mechanical contact that could cause physical breakage, while allowing the thermal cut-off member to remain positioned on the terrace for thermal sensing.
Solution Approach 2:
The insulating tape is pre-applied to the terrace surface before placing the thermal cut-off member, providing beforehand protection against physical damage. This cushioning layer prevents direct impact stresses from reaching the thermal cut-off member.
3Reliability
If insulating tape is added between the battery cell and protective circuit module, then electrical short circuits are prevented, but the connection structure becomes more complex
Solution Approach 1:
The insulating tape is positioned as a thin intermediary layer that adds minimal structural complexity while providing comprehensive electrical insulation. It bridges the gap between the battery cell and protective circuit module without requiring additional fastening mechanisms or complex assembly steps.
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
This configuration effectively prevents electrical short circuits and physical breakage, ensuring the battery pack's stability and operational integrity.
Implementation Method 1
the insulating tape provides insulation between the electrode tab and the protective circuit module
Implementation Method 2
the insulating tape provides insulation between the terrace and the thermal cut-off member
Data Source
AI summary
An embodiment of the present disclosure provides a battery pack including: a battery cell including an electrode assembly and a casing, the casing accommodating the electrode assembly therein and forming a terrace from which an electrode tab electrically connected to the electrode assembly protrudes; a protective circuit module seated on the terrace, the protective circuit module including a thermal cut-off member located on a side of the terrace and a connection tab electrically connected to the electrode tab; and insulating tape located between the battery cell and the protective circuit module, wherein the insulating tape provides insulation between the electrode tab and the protective circuit module and between the terrace and the thermal cut-off member.