Battery Pack Cell Frame Structure for Sensing Wire Fixation
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Solution Overview
Problem
The cumbersome process of fixing sensing wires to battery cell frames using double-sided tape increases manufacturing time and cost in existing battery packs.
Innovation Solution
A battery pack design featuring a cell frame with protruding pillars and bending parts that form a space to accommodate and fix sensing wires without adhesive tape, using a combination of pillars, bending parts, and additional features like pressing protrusions and guide portions to secure the wires in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If double-sided tape is used to fix sensing wires to the cell frame, then the sensing wires are held in place, but the manufacturing process becomes cumbersome and time-consuming
Solution Approach 1:
The patent removes the double-sided tape from the system entirely and replaces it with an integrated fixing portion formed directly from the cell frame material. This extraction of the adhesive tape eliminates the need for separate adhesive materials and simplifies the manufacturing process while maintaining wire fixation stability.
Solution Approach 2:
The fixing portion is merged with the cell frame structure, forming an integrated component that combines the frame's structural function with the wire fixation function. This merging eliminates the need for separate fixation elements and reduces manufacturing steps.
2Reliability
If double-sided tape is used to fix sensing wires, then the wires are secured, but the manufacturing cost increases
Solution Approach 1:
By extracting the double-sided tape from the system and replacing it with an integrated fixing portion made from the same material as the cell frame, the patent eliminates the need for additional adhesive materials and reduces manufacturing complexity, thereby lowering production costs.
Solution Approach 2:
The cell frame material serves multiple functions: providing structural support and simultaneously forming the fixing portion that secures the sensing wires. This multi-functionality reduces the need for separate components and materials, lowering overall manufacturing cost.
3Ease of manufacture
If a simple frame structure is used, then manufacturing is easier, but sensing wires cannot be properly fixed
Solution Approach 1:
The cell frame is segmented into distinct functional portions: the main frame structure and the integrated fixing portion. This segmentation allows the frame to maintain structural simplicity while incorporating specialized fixation features that securely hold the sensing wires without complicating the overall manufacturing process.
Data Source
AI summary
Disclosed is a battery pack for securing easy installation of sensing wires and reducing manufacturing cost. The battery pack includes a plurality of battery cells; a measuring unit configured to measure a current and temperature of at least one of the plurality of battery cells; at least one sensing wire electrically connected to the measuring unit and configured to have a wire on which a current flows; and a cell frame including a sidewall portion configured to form an inner space for accommodating the plurality of battery cells, and a fixing portion having a pillar part configured to protrude outward from the sidewall portion and a bending part bent and extended from the protruding end of the pillar part to form a space for accommodating the at least one sensing wire.