Battery Connecting Tab With Central Hole Prevents Housing Interference
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Solution Overview
Problem
The stability of battery modules is compromised due to interference between the housing and connecting tabs when inserting the module, leading to assembly issues and reliability concerns.
Innovation Solution
A connecting tab with a central hole and bending grooves is designed to prevent interference by allowing the tab to fold without leaning on the battery packs, enhancing stability and assembly reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connecting tab is bent to connect battery packs, then the battery module can be assembled, but the bent connecting tab interferes with the housing during insertion, deteriorating stability
Solution Approach 1:
The connecting tab is divided into distinct functional regions: a cell bonding part for connecting battery cells, a main body part, a hole region, and a bending part with bending grooves. This segmentation allows the bending part to be specifically designed for flexibility while other parts maintain structural integrity, preventing interference with the housing during insertion.
Solution Approach 2:
A hole is formed in the central portion of the main body part, creating a three-dimensional feature that reduces the profile of the connecting tab in the insertion direction. This dimensional change allows the connecting tab to pass through the housing opening without interference from the bent portions, while still maintaining bonding functionality.
2Ease of manufacture
If the connecting tab structure is simplified, then manufacturing is easier, but the ability to prevent interference with housing is reduced
Solution Approach 1:
Different regions of the connecting tab are given different properties: the cell bonding part has a flat surface for welding, the main body part contains a hole for clearance, and the bending part has grooves for flexibility. This local differentiation allows each region to perform its specific function optimally without complicating the overall manufacturing process.
Solution Approach 2:
Bending grooves are pre-formed in the bending part of the connecting tab during manufacturing. This preliminary action prepares the connecting tab for the bending operation that will occur during assembly, ensuring that the tab can be bent to connect battery packs without creating interference with the housing during insertion.
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
The solution effectively prevents interference between the housing and connecting tabs, improving the stability and reliability of battery module assembly by allowing smooth insertion and secure bonding of battery cells.
Implementation Method 1
a bending part that crosses the hole and is folded in half
Implementation Method 2
the battery module is configured by resistively welding each neighboring battery cell and connecting tabs using the connecting tabs
Data Source
AI summary
A connecting tab for connecting battery cells that can prevent interference caused by contact between a housing and the connecting tab when inserting a battery module into the housing. The connecting tab includes a hole formed in a center portion thereof. There connecting tab connects the battery cells, including: a main body part formed in a plate shape; a cell bonding part in the main body that contacts the plurality of battery cells; a hole that is formed in a central portion surrounded by the cell bonding part; and a bending part that crosses the hole and is folded to be overlapped in half. With this configuration of the connecting tab, stability of the battery module can be improved.