Battery Current Collection Terminal With Integrated Insulation Sealing

Solution Overview

Problem

The complexity and increased costs associated with manufacturing secondary batteries due to the need for multiple components for electrical connection and insulation, which complicates the production process and reduces productivity.

Innovation Solution

A battery design featuring an integrated current collection terminal with an electric connection portion and terminal portion, coupled to an electrode assembly through a simplified riveting process, and a gasket system for insulation and sealing, eliminating the need for separate components and complex welding processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple components for electrical connection and insulation are used, then electrical connection and insulation functions are achieved, but manufacturing cost increases and production process becomes complicated

Engineering Contradiction:

Improveelectrical connection and insulation functionVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple separate components (current collection plate, terminal, insulator, and gasket) into a single integrated current collection terminal. This merging eliminates the need for separate application of these components, simplifying the battery structure while maintaining all necessary electrical connection and insulation functions.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If multiple components for electrical connection and insulation are used, then electrical connection and insulation functions are achieved, but manufacturing cost increases

Engineering Contradiction:

Improveelectrical connection and insulation functionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines multiple separate components (current collection plate, terminal, insulator, and gasket) into a single integrated current collection terminal. This merging eliminates the need for separate application of these components, simplifying the battery structure while maintaining all necessary electrical connection and insulation functions.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If multiple components for electrical connection and insulation are used, then electrical connection and insulation functions are achieved, but productivity decreases

Engineering Contradiction:

Improveelectrical connection and insulation functionVSAvoidproduction efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent combines multiple separate components (current collection plate, terminal, insulator, and gasket) into a single integrated current collection terminal. This merging eliminates the need for separate application of these components, simplifying the battery structure while maintaining all necessary electrical connection and insulation functions.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4625681A1Battery, and battery pack and vehicle comprising same

Publication Date: 2025.10.01 LG ENERGY SOLUTION LTD

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AI summary

Disclosed is a battery, which includes an electrode assembly including a first electrode having a first uncoated portion, a second electrode having a second uncoated portion and configured to have a polarity opposite to the first electrode, and a separator interposed between the first electrode and the second electrode; a battery housing configured to accommodate the electrode assembly through an open portion formed at one side and electrically connected to the second electrode; and a current collection terminal configured to be electrically connected to the first electrode and electrically insulated from the battery housing, the current collection terminal including an electric connection portion configured to be coupled onto one surface of the electrode assembly at a closed portion of the battery housing provided at a side opposite to the open portion and a terminal portion configured to extend from the electric connection portion so that at least a part thereof is exposed to an outside of the battery housing through the closed portion.