Battery End Cover Assembly With Embedded Voltage Collection

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Solution Overview

Problem

Existing battery technologies face challenges in efficiently collecting relevant information, such as voltage information, without compromising energy density and increasing the risk of short circuits due to the use of busbar components for series connections.

Innovation Solution

An end cover assembly is designed with a first and second end cover, a first insulating member, an electrode terminal, and a collecting member embedded within the insulating member, allowing for information collection without external wires, enhancing insulation strength, and reducing the risk of short circuits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If busbar components are used for series connections to collect voltage information, then information collection is enabled, but the energy density decreases and the risk of short circuits increases

Engineering Contradiction:

Improvevoltage information collectionVSAvoidenergy density

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The patent merges the voltage collection function with the insulating member by embedding the collecting member directly into the insulating member. This integration eliminates the need for separate busbar components, thereby maintaining energy density while enabling voltage information collection. The collecting member and insulating member form a unified structure that performs both insulation and signal collection functions simultaneously.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The collecting member is nested within the insulating member, with the collecting member embedded inside the insulating member's structure. This nesting arrangement allows the collecting member to be housed within the insulating member without increasing overall volume, thus preserving energy density while enabling voltage collection functionality.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Loss of information

If busbar components are used for series connections, then information collection is enabled, but the risk of short circuits increases

Engineering Contradiction:

Improvevoltage information collectionVSAvoidshort circuit risk

Core Design Contradiction:

Loss of informationVSReliability

Solution Approach 1:

The insulating member acts as an intermediary between the collecting member and the conductive components. By embedding the collecting member within the insulating member, the patent introduces an insulation barrier that prevents direct contact between conductive parts, thereby eliminating short circuit risks while maintaining voltage collection capability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent extracts the collecting member from the traditional busbar configuration and relocates it into the insulating member. This extraction removes the problematic exposed conductive busbar components that posed short circuit risks, while the collecting member continues to perform its voltage collection function from its new protected position within the insulating member.

Inventive Principle:

Principle #2Taking out (Extraction)

3Loss of information

If external wires are used to collect information, then information collection is achieved, but the structure becomes more complex

Engineering Contradiction:

Improveinformation collectionVSAvoidstructure complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent combines the information collection function with the existing insulating member structure by embedding the collecting member within it. This merging eliminates the need for separate external wires and their associated connection components, thereby simplifying the overall structure while maintaining full information collection capability.

Inventive Principle:

Principle #5Merging (Combining)

4Quantity of substance

If the collecting member is embedded within the insulating member, then the structure becomes more compact and energy density increases, but the insulation strength must be enhanced

Engineering Contradiction:

Improveenergy densityVSAvoidinsulation strength

Core Design Contradiction:

Quantity of substanceVSStrength

Solution Approach 1:

The patent employs composite material construction for the insulating member, which embeds the collecting member while maintaining enhanced insulation strength. The insulating member is designed as a composite structure that provides both mechanical support and electrical insulation, allowing the collecting member to be embedded without compromising insulation performance while enabling compact integration.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS20250219207A1End cover assembly, battery pack, battery, and electrical device

Publication Date: 2025.07.03 CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

AI summary

An end cover assembly, a battery pack, a battery, and an electrical device are described. The end cover assembly comprises a first end cover, a second end cover, a first insulating member, an electrode terminal, and a collecting member; the first end cover is used to close an opening of a first case; the second end cover is used to close an opening of a second case; the first insulating member is disposed between the first end cover and the second end cover; the electrode terminal is mounted to the first end cover, the first insulating member, and the second end cover; the collecting member is embedded within the first insulating member and connected to the electrode terminal. The collecting member is embedded within the first insulating member. The collecting member is embedded within the first insulating member, which can further enhance insulation strength of the first insulating member.