Battery Pack Stepped PCM Mounting External Devices
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Solution Overview
Problem
Conventional battery packs lack a structured mechanism for mounting external elements or devices, limiting their versatility and functionality.
Innovation Solution
A battery pack design featuring a protection circuit module (PCM) with a stepped portion and insulating members that create a groove and terrace structure, allowing for the integration of external elements by providing a dedicated space for mounting, while ensuring electrical connectivity and insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional battery pack structure is used, then the structure is simple and easy to manufacture, but it lacks a dedicated space for mounting external elements or devices
Solution Approach 1:
The protection circuit module is divided into different height levels, creating a stepped structure with a first region and a second region at a lower level. This segmentation provides a dedicated mounting space for external elements while maintaining the overall compact structure of the battery pack.
Solution Approach 2:
The invention utilizes the vertical dimension by creating a stepped structure with regions at different heights. The groove formed by the stepped portion allows mounting of external elements in the vertical space, effectively using three-dimensional space rather than only horizontal expansion.
2Adaptability or versatility
If a stepped portion is added to the protection circuit module to create mounting space, then adaptability for external devices is improved, but the manufacturing complexity increases
Solution Approach 1:
The protection circuit module is segmented into regions of different heights, creating the stepped structure. This allows the mounting space to be formed as an integrated part of the PCM rather than requiring separate manufacturing steps for adding mounting structures.
Solution Approach 2:
The mounting structure is merged with the protection circuit module itself. The stepped portion and groove are formed as integral features of the PCM, combining the protection function and mounting function into a single component, thereby reducing overall manufacturing complexity.
3Reliability
If insulating members are added to surround the protection circuit module and bare cell, then electrical insulation is improved, but the device complexity increases
Solution Approach 1:
The insulating member serves multiple functions: it provides electrical insulation between the protection circuit module and bare cell, and it forms the groove structure that accommodates the stepped portion. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The insulating member is positioned to surround and encapsulate the protection circuit module and bare cell arrangement. The groove in the insulating member nestedly accommodates the stepped portion, creating a compact nested structure that provides insulation without requiring separate mounting structures.
Data Source
AI summary
Provided is a battery pack, which can provide a space for mounting an external element or an external device by forming a stepped portion in a protection circuit module (PCM). The battery pack includes a bare cell having a positive lead tab and a negative lead tab, a protection circuit module (PCM) electrically connected to the positive lead tab and the negative lead tab and having a stepped portion recessed from one side to the other side and having a smaller height than a peripheral portion, and a first insulating member having a groove formed to correspond to the stepped portion and surround at least a portion of the bare cell and the PCM.