Battery Cell Thermal-Protection Assembly for Pressure Relief Venting

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Solution Overview

Problem

The assembly process of batteries is complicated by the need to mount thermal management and protective components on opposite sides of the battery cell, leading to inefficient space utilization and increased difficulty.

Innovation Solution

Integrating a thermal management component and a protective component into a single structure on the same side of the battery cell, with the protective component covering the pressure relief mechanism to simplify assembly and enhance space utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If thermal management component and protective component are mounted on opposite sides of battery cell, then each component can perform its function independently, but assembly process becomes complicated and space utilization decreases

Engineering Contradiction:

Improveindependent function performanceVSAvoidassembly process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the protective component and thermal management component into a single integrated structure. The protective component includes a protective cavity that houses the thermal management component, allowing both components to be mounted together on one side of the battery cell rather than on opposite sides. This integration simplifies the assembly process while maintaining the independent functional performance of each component.

Inventive Principle:

Principle #5Merging (Combining)

2Area of stationary object

If thermal management component and protective component are mounted on opposite sides of battery cell, then each component has dedicated space, but overall space utilization of battery box decreases

Engineering Contradiction:

Improvededicated space for each componentVSAvoidspace utilization of battery box

Core Design Contradiction:

Area of stationary objectVSVolume of stationary object

Solution Approach 1:

The patent applies the nesting principle by placing the thermal management component inside the protective cavity of the protective component. This nested arrangement allows both components to occupy the same spatial region, effectively doubling the space utilization in that area while still providing dedicated functional space for each component. The thermal management component is housed within the protective structure, maximizing the use of available battery box volume.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Object-affected harmful factors

If protective component covers pressure relief mechanism, then emissions are blocked and safety is improved, but assembly complexity increases

Engineering Contradiction:

Improveemissions from pressure relief mechanismVSAvoidcomponent integration complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent combines the protective component with the thermal management component into a single integrated assembly. The protective component includes a protective cavity that houses the thermal management component, and this integrated structure is mounted together on one side of the battery cell. This merging reduces assembly complexity compared to mounting separate components on opposite sides, while the protective component still effectively covers the pressure relief mechanism to block emissions.

Inventive Principle:

Principle #5Merging (Combining)

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

This integration simplifies the assembly process, reduces the risk of high-temperature emissions damaging other battery components, and improves safety by effectively blocking and managing emissions from the pressure relief mechanism.

Implementation Method 1

The thermal management component is configured to regulate a temperature of the battery cell

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The protective component covers at least a portion of the pressure relief mechanism... emissions from the pressure relief mechanism can be blocked as much as possible by the protective component

Methodology Applied

Scientific EffectPhysical containment: Physical Containment

Data Source

PatentUS20250226525A1Battery and electrical device

Publication Date: 2025.07.10 CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

AI summary

Provided are a battery and an electrical device. The battery includes a battery cell and a functional component. A side of the battery cell along a first direction is provided with a pressure relief mechanism. The functional component is located on one side of the battery cell where the pressure relief mechanism is provided, and the functional component includes a thermal management component and a protective component. The thermal management component is attached to the battery cell, and the thermal management component is configured to regulate a temperature of the battery cell. A protective component is connected to the thermal management component and covers at least a portion of the pressure relief mechanism.