Cell Top Cover Reflow Layout for Automated Rewelding Transfer

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Solution Overview

Problem

Existing battery manufacturing processes face low production efficiency due to manual handling of cells with inferior welding quality, requiring rewelding, which increases labor and reduces overall productivity.

Innovation Solution

A cell top cover rewelding reflow system comprising a discharge conveyor line, reflow conveyor line, and sorting module, with a pickup member that transfers cells to be rewelded between these lines, reducing manual operations and optimizing conveyor line arrangements to enhance efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual transfer of cells with inferior welding quality is used, then welding quality can be improved through rewelding, but production efficiency deteriorates due to low automation

Engineering Contradiction:
Improvewelding qualityVSAvoidproduction efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent replaces manual mechanical transfer with an automated picking and placing mechanism. The picking member automatically picks up cells with inferior welding quality from the discharge conveyor line and places them on the reflow conveyor line, eliminating manual intervention and significantly improving production efficiency while maintaining the ability to identify and reweld defective cells

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service by automatically identifying cells with inferior welding quality through inspection and autonomously transferring them to the reflow conveyor line without human intervention. The automated picking and placing mechanism performs the entire transfer process independently, allowing the system to self-correct welding defects without external manual assistance

Inventive Principle:
Principle #25Self-service

2Ease of operation

If discharge conveyor line and reflow conveyor line are arranged separately, then ease of operation is improved, but device complexity and space requirements worsen

Engineering Contradiction:
Improveconveyor line operationVSAvoidconveyor line arrangement
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent merges the discharge conveyor line and reflow conveyor line into a closely integrated arrangement where the picking member can access both lines. The lines are positioned adjacent to each other with the picking member disposed between them, allowing simultaneous access to both conveyors while maintaining their distinct functions. This combined arrangement reduces overall system complexity and space requirements compared to completely separate layouts

Inventive Principle:
Principle #5Merging (Combining)

3Extent of automation

If picking member moves to positions corresponding to both conveyor lines, then automation level improves, but device complexity increases

Engineering Contradiction:
Improvecell transfer automationVSAvoidpicking member mechanism
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent implements a dynamically movable picking member that can transition between positions corresponding to the discharge conveyor line and the reflow conveyor line. The picking member is disposed on a movable platform or carriage that travels along the length of the conveyor lines, allowing it to access any position along the conveyors as needed. This dynamic positioning capability enables full automation of cell transfer while keeping the mechanism relatively simple through the use of basic linear motion

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250273781A1Cell top cover rewelding reflow system, method, and battery production line
Publication Date: 2025.08.28 CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
  • US20250273781A1 patent drawing
  • US20250273781A1 patent drawing
  • US20250273781A1 patent drawing

AI summary

A cell top cover rewelding reflow system includes a discharge conveyor line, a reflow conveyor line, and a sorting module. An input end of the discharge conveyor line is connected to welding equipment, and an output end extends toward a discharge position; the reflow conveyor line is disposed on one side of the discharge conveyor line, and an output end of the reflow conveyor line is connected to the welding equipment; a conveying direction of the discharge conveyor line is opposite to a conveying direction of the reflow conveyor line, and the discharge conveyor line and the reflow conveyor line are arranged side by side; the sorting module includes a first frame and a pickup member, where the first frame, the discharge conveyor line, and the reflow conveyor line are relatively fixed, and the pickup member is movably disposed on the first frame.