Secondary Battery Welding Alignment via Synchronous Rotation Control
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Solution Overview
Problem
The existing secondary battery manufacturing process faces limitations due to positional shifts during the end plate welding process, leading to welding defects and unreliable sealing of the battery unit, caused by uneven rotational rates of clamp members and resulting in the mono frame being twisted or misaligned.
Innovation Solution
An apparatus and method involving a housing with rotation shafts and a support unit that fixes and supports the secondary battery unit, allowing the housing to rotate at specific angles to maintain the position of the cell module and mono frame, ensuring precise welding by preventing twisting and using a hollow type reducer to eliminate backlash.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If clamp members rotate at different rotational rates, then the welding process can be completed, but the mono frame becomes twisted and positional shift occurs
Solution Approach 1:
The patent combines the rotation control of multiple clamp members into a unified system where all clamp members rotate synchronously at the same rotational rate. This merging of control ensures that the end plate and mono frame maintain proper alignment throughout the welding process, preventing positional shifts and twisting while completing the welding operation efficiently.
Solution Approach 2:
The patent implements a control system that monitors and adjusts the rotational rates of clamp members to maintain synchronous rotation. This feedback mechanism detects any deviations in rotational speed and makes real-time adjustments to ensure all clamp members rotate at the same rate, thereby preventing mono frame twisting and maintaining manufacturing precision throughout the welding process.
2Productivity
If the end plate rotates during welding, then all edges can be welded, but the position of the end plate shifts causing welding defects
Solution Approach 1:
The patent performs preliminary positioning of the end plate and clamp members before the welding process begins. The clamp members are pre-adjusted to the correct rotational positions, and the end plate is securely clamped to prevent any positional shifts during rotation. This preliminary preparation ensures that when the welding process completes all edges, the welding quality remains high without defects caused by position shifts.
3Ease of operation
If the mono frame is not properly supported, then the welding device can access all areas, but the adhesive surface position changes during welding
Solution Approach 1:
The patent introduces clamp members as intermediary elements between the welding device and the mono frame. These clamp members provide stable support and precise positioning of the mono frame during the welding process, allowing the welding device to access all areas while maintaining the adhesive surface position. The clamp members act as a mediating structure that enables both accessibility and precision.
Data Source
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AI summary
Provided is an apparatus for manufacturing a secondary battery. The apparatus for manufacturing the secondary battery includes a housing, in which a secondary battery unit including a cell module, a mono frame, into which the cell module is accommodated, and an end plate coupled to both opened side surfaces of the mono frame is accommodated, a pair of rotation shafts extending from both side surfaces of the housing, a housing rotation unit connected to any one of the pair of rotation shafts, a housing support configured to support the pair of rotation shafts, and a support unit provided inside the housing rotation unit to press and support the secondary battery unit.