Battery Pack Holder With Positioning Grooves For Circuit Board Stability
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Solution Overview
Problem
The existing battery pack designs face challenges with the positioning and stability of circuit boards, lead fixation, and dimensional changes due to battery expansion, leading to potential damage and low productivity in assembly and replacement processes.
Innovation Solution
A battery pack design incorporating a holder with a cell holder for the battery cell and a circuit board holder that covers the circuit board, reducing the need for insulating tapes and ensuring high positional accuracy and stability, while accommodating battery expansion without altering the outer dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If insulating tapes are used to fix the circuit board and battery cell, then the components can be assembled together, but the positioning accuracy deteriorates and assembly productivity decreases
Solution Approach 1:
The patent replaces the mechanical adhesive-based fixation system (insulating tapes) with a positioning groove system that uses geometric constraints. The circuit board is positioned in a dedicated groove on the holder, and the battery cell is positioned in a corresponding groove, eliminating the need for adhesive tapes and providing precise, repeatable positioning through mechanical geometry alone.
Solution Approach 2:
The holder serves as an intermediary component that mediates between the circuit board and battery cell. It provides positioning grooves that guide and constrain both components to their correct positions, replacing the direct adhesive bonding approach and enabling accurate positioning without the variability of manual tape application.
2Reliability
If multiple insulating tapes are used to secure leads and components, then the components can be fixed, but the device complexity and number of parts increase
Solution Approach 1:
The patent merges multiple fixation functions into a single integrated holder component. The holder simultaneously provides positioning grooves for the circuit board, positioning grooves for the battery cell, and fixation structures for the leads, eliminating the need for multiple separate insulating tapes and reducing overall device complexity while maintaining reliable fixation.
3Stability of the object's composition
If insulating tapes are attached manually to outer surfaces, then the battery cell can be fixed, but productivity decreases and attachment position varies
Solution Approach 1:
The positioning grooves are pre-formed as integral parts of the holder structure during holder manufacturing, rather than requiring preliminary manual application of insulating tapes. This preliminary preparation of positioning features enables rapid assembly of the circuit board and battery cell without manual intervention for positioning, significantly improving productivity while ensuring consistent attachment positions.
4Reliability
If the battery pack is fixed to the electronic apparatus main body using double-sided adhesive tapes, then it can be attached, but detachment becomes difficult when battery replacement is needed
Solution Approach 1:
The patent introduces a detachable connector system that transforms the static, permanent adhesive bond into a dynamic, reversible connection. The connector allows the battery pack to be firmly attached during normal operation but can be easily detached and reattached when battery replacement is needed, providing both strong attachment and ease of maintenance.
Data Source
AI summary
A battery pack includes a battery cell, a circuit board, and a holder. The battery cell includes a battery device covered with a laminate film. The circuit board is connected to the battery cell. The holder includes a cell holder that covers the battery cell and a circuit board holder that covers the circuit board. In battery pack, the circuit board holder covering the circuit board is arranged in a space formed above a terrace portion of the battery cell covered with the cell holder.