Battery Electrode Tab Damage Prevention via Insulating Member

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Solution Overview

Problem

The electrode tab group in batteries is prone to damage due to external forces such as vibration or impact, leading to unstable electrical connections and potential connection failures.

Innovation Solution

A battery design that includes an insulating member on the sealing plate and an insulation sheet covering the electrode bodies, with specific configurations such as narrow sheet dimensions and strategically placed join parts, to firmly fix the electrode bodies and prevent deviation from their predetermined position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the electrode tab group is folded and bent to connect to the terminal, then the electrical connection is achieved, but the tab is easily damaged when external force is applied

Engineering Contradiction:

Improveelectrical connection stabilityVSAvoidtab damage resistance

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The insulating member is preliminarily positioned on the sealing plate before the electrode body is installed, creating a pre-positioned support structure that guides and stabilizes the electrode body and its tab group during assembly and operation, preventing excessive bending and damage

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The insulating member acts as an intermediary component between the sealing plate and the electrode body, providing mechanical support and positioning that protects the vulnerable tab group from direct exposure to external forces while maintaining electrical connection functionality

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If the electrode body is not firmly fixed, then the assembly is simple, but the electrode body deviates from predetermined position under external force

Engineering Contradiction:

Improveassembly simplicityVSAvoidelectrode body position stability

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The insulating member on the sealing plate provides self-positioning functionality for the electrode body, where the insulating member's structure automatically guides and stabilizes the electrode body in its predetermined position without requiring additional complex fixing mechanisms

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The insulating member provides localized support and positioning at critical areas where the electrode body contacts the sealing plate, ensuring stability at these specific locations while maintaining overall assembly simplicity

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20230090744A1battery

Publication Date: 2023.03.23 PRIME PLANET ENERGY & SOLUTIONS INC

AI summary

A battery is provided in which a damage on an electrode tab group is suitably inhibited. In one suitable embodiment of the battery herein disclosed, an insulating member is provided on a sealing plate. An insulation sheet arranged to cover an electrode body is joined to the insulating member, and the insulation sheet includes a sheet bottom wall, a pair of sheet first side walls that are configured to extend from the sheet bottom wall and are opposed mutually, and a pair of sheet second side walls that extend from the sheet bottom wall and are opposed mutually.