Battery Pack PCM Hook Fastening Assembly
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Solution Overview
Problem
Conventional battery pack manufacturing methods using screw-fastening for mounting printed circuit modules (PCMs) are costly and prone to quality failures due to operator inexperience, requiring complex processes and additional components.
Innovation Solution
A hook-shaped fastening structure made of elastic materials like polyimide, polypropylene, or polystyrene is integrally formed with the holder case to securely attach the PCM to the outer surface, eliminating the need for screws and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw-fastening is used to mount PCM to holder case, then the PCM can be securely fixed, but the manufacturing cost increases and the assembly process becomes complex
Solution Approach 1:
The invention extracts and eliminates the screw components from the assembly system, replacing them with an integrated hook-shaped fastening structure that is part of the holder case itself. This removes the need for separate fastening components and simplifies the assembly process while maintaining secure fixation of the PCM.
Solution Approach 2:
The hook-shaped fastening structure is integrally formed with the holder case, merging the fastening function into the existing structure. This eliminates the need for separate screw components and reduces assembly complexity while ensuring reliable PCM fixation.
2Reliability
If screw components are used for mounting PCM, then secure fixation is achieved, but the component cost and manufacturing complexity increase
Solution Approach 1:
The fastening function is merged into the holder case structure through the integrally formed hook-shaped fastening structure. This eliminates the need for separate screw components, reducing part count, material costs, and manufacturing complexity while maintaining secure PCM fixation.
Solution Approach 2:
The hook-shaped fastening structure provides self-service fixation by being integrally formed with the holder case, eliminating the need for additional fastening components or complex assembly operations. The structure automatically provides secure mounting when the PCM is installed.
3Ease of manufacture
If traditional fastening methods are used, then the PCM can be mounted, but quality failures occur due to operator inexperience
Solution Approach 1:
The integrally formed hook-shaped fastening structure provides self-service mounting functionality that does not require operator skill or judgment. The structure automatically ensures proper PCM fixation through its design, eliminating quality variations caused by operator inexperience and ensuring consistent assembly quality.
Solution Approach 2:
The invention removes the human operator from the critical fixation step by using an integrally formed fastening structure that automatically ensures proper mounting. This eliminates quality failures associated with operator inexperience by making the fixation process foolproof and consistent.
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 approach reduces component costs, enhances manufacturability, and prevents quality failures by securely fixing the PCM without the risk of breakage, thereby improving the overall quality and reliability of the battery pack.
Implementation Method 1
The fastening portion may include a material having elasticity. The fastening portion may include at least one of polyimide, polypropylene, polyethylene, or polystyrene.
Data Source
AI summary
A battery pack includes a plurality of battery cells including an electrode portion; a holder case accommodating the plurality of battery cells; and a printed circuit module (PCM) mounted to an outer surface of the holder case, the holder case including a fastening portion fixing the PCM to the holder case, the fastening portion being at a region of the holder case corresponding to an edge portion of the PCM.