Battery Cell Pressing Assembly With Retractable Lead Contacts
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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, leading to inefficiencies and potential deformation during charging and discharging processes.
Innovation Solution
A pressing apparatus with a movable lead contact member and compression unit that adjusts its position to avoid contact between charge-discharge plates when no battery cell is present, using a frame with guide members and a pressure sensor to manage pressure and prevent plate deformation.
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 damage, but the device complexity and operational time increase
Solution Approach 1:
The pressing plate is designed with a movable pressing member that can dynamically adjust its position between a pressing state (when battery cells are present) and a retracted state (when no battery cells are present). This dynamic structure eliminates the need for dummy cells by automatically adapting to the presence or absence of battery cells, thereby simplifying the device and operation while maintaining plate protection.
Solution Approach 2:
The pressing apparatus incorporates a sensor that automatically detects whether battery cells are present between the pressing plates. Based on this detection, the system autonomously controls the pressing member to either press (when cells are present) or retract (when cells are absent), eliminating the need for manual dummy cell insertion and achieving self-protection without additional operational steps.
2Reliability
If a dummy cell is inserted to prevent plate contact, then plate deformation is prevented, but the productivity decreases due to additional insertion steps
Solution Approach 1:
The pressing apparatus uses a sensor to provide feedback on the presence or absence of battery cells. This feedback signal automatically triggers the pressing member to adjust its position, enabling the system to prevent plate deformation only when necessary (when no battery cells are present) without requiring manual intervention or dummy cell insertion, thus maintaining high productivity.
Solution Approach 2:
The pressing member transitions from a static structure to a dynamic one that can automatically retract when no battery cells are detected. This dynamic adjustment prevents plate deformation in empty spaces while eliminating the need for dummy cells, thereby maintaining operational speed and productivity.
3Reliability
If the charge-discharge plate has a constantly protruding structure, then electrical connection with electrode lead is ensured, but the plate is vulnerable to contact damage when no battery cell is present
Solution Approach 1:
The charge-discharge plate is integrated with a movable pressing member that can dynamically adjust its protrusion. When battery cells are present, the pressing member protrudes to ensure stable electrical connection with the electrode lead. When no battery cells are present, the pressing member retracts, preventing contact damage to the charge-discharge plate while maintaining connection stability when needed.
Solution Approach 2:
The sensor detects the absence of battery cells in advance and triggers the pressing member to retract before any harmful contact can occur. This preliminary protective action prevents damage to the charge-discharge plate while maintaining the protruding structure's electrical connection function when battery cells are present.
Data Source
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.