Battery Cell Pressing Plates With Retractable Lead Contact
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Solution Overview
Problem
Existing pressing apparatuses for battery cells require the insertion of a dummy cell to prevent damage from plate contact when empty spaces are present, leading to inefficiencies and potential deformation or breakage of charge-discharge plates during charging and discharging processes.
Innovation Solution
A pressing apparatus with a frame, movably installed plates, a lead contact member, and a moving unit that allows the lead contact member to move between positions inside and outside the plates, eliminating the need for a dummy cell by adjusting its position to avoid plate contact and ensuring proper electrical connection and pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dummy cell is inserted to prevent plate contact damage, then the charge-discharge plates are protected from breakage and deformation, but the operational speed decreases due to additional processing steps
Solution Approach 1:
The pressing plate is designed with a movable pressing portion that can dynamically adjust its position between protruding and retracted states. When no battery cell is present, the pressing portion moves to a retracted position to avoid contacting and damaging adjacent plates. When a battery cell is inserted, the pressing portion moves to a protruding position to apply pressing force. This dynamic adjustment eliminates the need for dummy cells while protecting the charge-discharge plates, thereby maintaining high operational speed without compromising reliability.
2Device complexity
If the lead contact member is fixed in position, then the structure is simple and stable, but damage occurs when empty spaces exist between pressing plates
Solution Approach 1:
The lead contact member is designed with a movable pressing portion that can change its position based on the presence of a battery cell. The pressing portion moves between a protruding position (when a battery cell is present) and a retracted position (when no battery cell is present). This dynamic positioning prevents the pressing portion from contacting and damaging adjacent plates during empty operations, while maintaining electrical connection stability during charging and discharging processes.
Solution Approach 2:
The pressing apparatus automatically detects the presence or absence of a battery cell and adjusts the pressing portion's position accordingly. The system self-regulates to prevent damage without requiring external intervention or complex control mechanisms, maintaining structural simplicity while ensuring reliability through automatic adaptive behavior.
3Reliability
If a constantly protruding charge-discharge plate structure is used, then electrical connection is maintained, but breakage occurs when no battery cell is present
Solution Approach 1:
The charge-discharge plate is designed with a movable pressing portion that dynamically adjusts its position. When a battery cell is present, the pressing portion protrudes to maintain stable electrical connection for charging and discharging. When no battery cell is present, the pressing portion retracts to avoid contacting and breaking adjacent plates. This dynamic positioning resolves the contradiction between maintaining electrical connection stability and preventing breakage.
Data Source
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AI summary
The pressing apparatus for a battery cell includes a frame, a plurality of plates movably installed in the frame in a first direction and arranged to face each other in the first direction to form accommodating space, a lead contact member including a charge-discharge plate electrically connected to an electrode lead of a battery cell for at least one of charging and discharging of the battery cell accommodated in the accommodating space, and a moving unit connected to the lead contact member so that the lead contact member is movable in the first direction is provided. The moving unit may move between a first position in which the lead contact member is disposed inside the plurality of plates in the first direction and a second position in which the lead contact member is disposed outside the plurality of plates in the first direction.