Battery Electrode Terminal Fitting for Weld-Free Cell Connection
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Solution Overview
Problem
The existing methods for connecting battery cells through welding face difficulties in disassembly, maintenance, and risk of short circuits due to welding slag, which complicates the grouping and operation of battery cells.
Innovation Solution
The introduction of an electrode terminal with a pole body featuring a first and second electrical connection portion, allowing for secure fitting without welding, which integrates the functions of a pole and electrical connection piece, enabling easy grouping and disassembly of battery cells while reducing the risk of short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If welding is used to connect electrical connection pieces to poles of battery cells, then electrical connection between battery cells is achieved, but welding difficulties increase, disassembly becomes hard, and welding slag may cause damage or short circuits
Solution Approach 1:
The patent replaces the welding process (thermal/mechanical system) with a mechanical fitting system. The electrode terminal includes a pole body with a first fitting portion and a second fitting portion that mechanically connect without welding, eliminating welding slag and associated difficulties while maintaining electrical connection reliability.
Solution Approach 2:
The patent merges the functions of the pole and the electrical connection piece into a single integrated electrode terminal structure. The pole body directly incorporates both fitting portions, eliminating the need for separate welding of electrical connection pieces to the pole, thus simplifying the assembly process and avoiding welding-related problems.
2Reliability
If welding is used to connect battery cells, then electrical connection is achieved, but disassembly and maintenance become difficult
Solution Approach 1:
The electrode terminal is segmented into distinct fitting portions (first fitting portion and second fitting portion) that can be independently engaged and disengaged. This segmentation allows the battery cells to be connected through simple mechanical insertion and separated when needed for maintenance, without requiring complex welding reversal processes.
Solution Approach 2:
The fitting structure transitions from a permanent welded connection to a dynamic, reversible mechanical connection. The first and second fitting portions are designed to be easily engaged and disengaged, allowing the system to switch between connected and separated states for operational flexibility and ease of maintenance.
3Productivity
If welding is used for electrical connection, then battery cells can be grouped, but welding slag may cause damage to surfaces or components and risk short circuits
Solution Approach 1:
The patent replaces the welding process with a mechanical fitting system where the first fitting portion and second fitting portion connect through simple insertion. This eliminates the generation of welding slag entirely, preventing damage to battery cell surfaces and components while avoiding short circuit risks, and maintains efficient battery cell grouping.
Data Source
AI summary
An electrode terminal includes a pole body, where the pole body includes a first electrical connection portion and a second electrical connection portion that is electrically connected to the first electrical connection portion. The second electrical connection portion is adapted to the first electrical connection portion in shape, such that electrical connection between the electrode terminals of two battery cells is implemented through fitting in shape between the first electrical connection portion of the electrode terminal of one battery cell and the second electrical connection portion of the electrode terminal of the other battery cell.