Battery Tab Connection Layout for Compact Pole Welding
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Solution Overview
Problem
Existing battery designs with perpendicular connecting portions and tabs occupy excessive length space due to wide connecting portions, making them inefficient in terms of size and stability.
Innovation Solution
A battery design featuring a tab portion bent towards a large surface of the main body with a connecting piece that is parallel or almost parallel to the side surface, allowing for a stable and efficient connection without increasing the length direction size, utilizing a bent plate-shaped connecting piece with a first section connected to the pole and a second section welded to the tab portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connecting portion is made wide (>6 mm) for welding convenience, then the welding ease is improved, but the length space of the battery is increased
Solution Approach 1:
The connecting piece is designed with a bent shape that changes the spatial dimension of connection. Instead of extending horizontally perpendicular to the tab, the connecting piece bends to connect in a direction more parallel to the tab surface, reducing the horizontal length occupation while maintaining welding accessibility. This dimensional reorientation allows wide connecting pieces to be used without proportionally increasing battery length.
Solution Approach 2:
The connecting piece is segmented into multiple sections with different orientations. The first section connects to the tab portion, the second section connects to the cover plate, and intermediate sections provide bending transitions. This segmentation allows each section to be optimized for its specific function while collectively reducing the overall length space occupation.
2Device complexity
If the connecting portion is made perpendicular to the main body for direct welding, then the manufacturing simplicity is improved, but the length space occupation is increased
Solution Approach 1:
The connecting piece transitions from a simple perpendicular configuration to a multi-section bent configuration. This allows the connection to occur in a different spatial dimension, reducing the length space occupation while maintaining manufacturing simplicity through standardized bending processes.
3Length of moving object
If the connecting piece is bent parallel to the side surface, then the length space is reduced, but the connection stability must be maintained
Solution Approach 1:
The connecting piece is divided into multiple sections that provide gradual transitions and stable connection points. Each section can be independently optimized for stability while collectively achieving compact dimensions. The segmented structure allows for better stress distribution and connection reliability.
Solution Approach 2:
The connecting piece incorporates bent sections with appropriate curvature radii that maintain structural strength while reducing length space occupation. The curved transitions distribute stresses more effectively than sharp angles, maintaining connection stability in a compact configuration.
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 design reduces the length space occupied by the connecting piece, enhances connection stability, and simplifies the manufacturing process by eliminating the need for folding or cutting, while maintaining battery performance and safety.
Implementation Method 1
the second section is parallel to or almost parallel to the side surface of the main body portion and is welded onto a surface of one side of the tab portion
Data Source
AI summary
A battery and a battery manufacturing method are provided. The battery includes a main body portion, a cover plate assembly, a tab portion, and a connecting piece. The cover plate assembly is located on a top surface of the main body portion and includes a pole. The tab portion extends out from a side surface of the main body portion and is bent toward a first large surface of two opposite large surfaces of the main body portion. The connecting piece is bent into a first section, located on the top surface and connected with the pole, and a second section, parallel or almost parallel to the side surface and welded to a surface of one side of the tab portion facing or facing away from the main body portion. A surface where the connecting piece is connected with the second section is disposed opposite to the main body portion.