Rechargeable Battery Thermal Management via Sealed Heat Transfer

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Rechargeable tool batteries face inefficiencies in heat dissipation and protection from dust and moisture, particularly in outdoor applications, where existing designs often require complex assemblies and direct mechanical contact between heat dissipation and radiation elements, which can lead to thermal resistance and vulnerability to environmental factors.

Innovation Solution

The design separates heat dissipation and radiation elements, using a sealing device to conduct heat between them without direct contact, and incorporates a coupling device to achieve low thermal resistance while providing protection from dust and moisture through a sealing foil that surrounds the cell block, allowing for efficient heat dissipation and protection in a constructively simple manner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If heat dissipation element and heat radiation element are directly contacted mechanically, then heat transfer efficiency is improved, but protection from dust and moisture is worsened

Engineering Contradiction:

Improveheat transfer efficiencyVSAvoiddust and moisture ingress

Core Design Contradiction:

Loss of energyVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a sealing device as an intermediary component between the heat dissipation element and heat radiation element. This sealing device includes a sealing foil that creates a dust-tight and water-tight seal while allowing thermal energy to pass through, thus preventing harmful factors from entering the battery housing while maintaining heat transfer efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent segments the thermal management system into separate components (heat dissipation element and heat radiation element) that are connected through a sealing interface rather than direct contact. This segmentation allows the sealing device to be introduced as a distinct component that provides both sealing and thermal conduction functions.

Inventive Principle:

Principle #1Segmentation

2Reliability

If complex assembly structures are used to protect from environmental factors, then protection reliability is improved, but device complexity is worsened

Engineering Contradiction:

Improveprotection reliabilityVSAvoidassembly complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The sealing device serves multiple functions simultaneously: it provides dust-tight and water-tight sealing, conducts thermal energy from the heat dissipation element to the heat radiation element, and mechanically connects the two elements. This multi-functionality reduces the need for additional separate components, thereby simplifying the overall assembly while maintaining high protection reliability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Temperature

If direct mechanical contact between heat dissipation and radiation elements is used, then thermal resistance is reduced, but vulnerability to environmental factors increases

Engineering Contradiction:

Improvethermal resistanceVSAvoidenvironmental vulnerability

Core Design Contradiction:

TemperatureVSObject-affected harmful factors

Solution Approach 1:

The sealing foil acts as a thermal intermediary that conducts heat while providing environmental protection. The sealing device is designed to maintain low thermal resistance despite the presence of the sealing interface, thus preventing environmental factors from compromising thermal performance.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 configuration effectively dissipates heat, protects the battery from environmental factors, and simplifies assembly, ensuring reliable operation in harsh conditions by maintaining low thermal resistance and preventing dust and moisture ingress.

Implementation Method 1

the sealing device to conduct heat between them without direct contact

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

at least one heat dissipation element, which is provided to dissipate heat from the cell block

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 3

at least one heat radiation element, which is provided at least to radiate the heat dissipated by the heat dissipation element to the surroundings

Methodology Applied

Scientific EffectThermal radiation: Thermal Radiation

Data Source

PatentUS9728824B2Rechargeable battery

Publication Date: 2017.08.08 ROBERT BOSCH GMBH

AI summary

A rechargeable battery, particularly a rechargeable tool battery, includes at least one cell block which has at least one heat dissipation element, which is provided to dissipate heat from the cell block, and a rechargeable battery housing, which has at least one heat radiation element, which is provided at least to radiate the heat dissipated by the heat dissipation element to the surroundings. It is provided that the heat dissipation element and the heat radiation element are formed as components configured separately from each other.