Welded Structure With Depressurized Space For Battery Terminals
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Solution Overview
Problem
Existing welded structures and battery manufacturing methods face challenges in achieving strong and consistent welds between metal members, particularly when there are large gaps, which affects the reliability and efficiency of the welding process.
Innovation Solution
A manufacturing method that involves creating a space between two metal members, depressurizing it through pressure reducing ports, and then welding them together using a laser beam, optimizing the contact and reducing the gap size between the members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If metal members are welded with large gaps between them, then the welding process is easier to perform, but the welding quality and strength are insufficient
Solution Approach 1:
The patent applies preliminary action by forming a recess portion in one of the metal members before welding. This recess structure is prepared in advance to receive the protruding portion of the other metal member, ensuring proper alignment and reducing gaps before the welding process begins. This preliminary structural preparation enables better welding quality without requiring complex real-time adjustment during welding.
Solution Approach 2:
The patent changes the geometric parameters of the metal members by introducing recess and protruding portions. Specifically, one metal member is formed with a recess portion having specific dimensions (depth d1, width w1) while the other has a corresponding protruding portion (height h1, width w2). This parameter modification allows the components to interlock, reducing gaps and improving welding strength while maintaining ease of assembly.
2Strength
If the gap between metal members is reduced to improve welding quality, then the welding strength increases, but the manufacturing complexity increases
Solution Approach 1:
The patent modifies the geometric parameters of the metal members by introducing recess and protruding portions with specific dimensions. The recess portion has depth d1 and width w1, while the protruding portion has height h1 and width w2. These parameter changes create an interlocking structure that naturally reduces gaps without requiring complex manufacturing processes or additional components.
Solution Approach 2:
The patent segments the contact interface between metal members into distinct recess and protruding portions. This segmentation allows each component to be manufactured independently with standard processes, then assembled together to form a precise fit. The segmentation simplifies manufacturing by avoiding the need for complex gap-control mechanisms while achieving reduced gaps through the interlocking geometry.
3Manufacturing precision
If protruding portions are added to metal members to reduce gaps, then the welding quality improves, but the manufacturing precision requirements increase
Solution Approach 1:
The patent introduces specific geometric parameters for the recess and protruding portions: recess depth d1, recess width w1, protruding height h1, and protruding width w2. These parameter definitions provide clear manufacturing targets that can be achieved with standard tolerances. The interlocking geometry created by these parameters automatically compensates for minor dimensional variations, maintaining welding quality without requiring extreme precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method results in a more robust and consistent welded structure and improved battery electrode terminal connections, enhancing the welding quality and reducing the size and variation of the gap between weld points.
Implementation Method 1
performing a suction operation on the space through the pressure reducing port to depressurize the space
Implementation Method 2
depressurize the space so as to bring a first portion of the first metal member into contact with a second portion of the second metal member
Implementation Method 3
welding the first portion of the first metal member and the second portion of the second metal member to each other by irradiating an outer surface of the second metal member with a laser beam
Implementation Method 4
welding the first portion of the first metal member and the second portion of the second metal member to each other in a state where the space is depressurized
Data Source
AI summary
A manufacturing method of a welded structure in which metal members are welded to each other includes bringing the metal members into contact with each other so as to form a space surrounded by the metal members, a pressure reducing port is formed between the metal members or in at least one metal member of the metal members, the manufacturing method of the welded structure further includes performing a suction operation on the space through the pressure reducing port to depressurize the space so as to bring the first portion of the metal member into contact with the second portion of the metal member, or to make a distance between the first portion and the second portion smaller than that when the space is not depressurized; and welding the first portion and the second portion to each other in a state where the space is depressurized.