Flexible Volume-Variable Casing for Thermal Coupling

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Solution Overview

Problem

Existing temperature control devices for electric devices, such as batteries, face inefficiencies in thermal coupling and stability, leading to suboptimal temperature regulation within predetermined limits.

Innovation Solution

A temperature control device featuring a volume-variable casing made of flexible material that can expand to lie flat against the electric device, enhancing thermal coupling with a fluid channel for improved efficiency, using fastening devices to secure the casing and facilitate linear fluid flow, and optionally incorporating flow-guiding elements for enhanced heat transfer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a rigid casing is used for the fluid channel, then the structural stability is maintained, but the thermal coupling efficiency deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidthermal coupling efficiency
Core Design Contradiction:
Stability of the object's compositionVSTemperature

Solution Approach 1:

The patent employs a volume-variable casing that can dynamically change its shape and volume in response to fluid pressure. When temperature control fluid is pumped into the casing, it expands to conform to the electric device's surface, maximizing thermal contact. This dynamic adaptation resolves the contradiction by allowing the casing to be both structurally stable (when deflated or at rest) and thermally efficient (when inflated and conforming to the device surface).

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The casing's volume and shape parameters are changed by introducing temperature control fluid. This parameter change allows the casing to transition from a compact state to an expanded state that closely follows the contours of the electric device, thereby improving thermal coupling without compromising structural integrity through the controlled flexibility of the material.

Inventive Principle:
Principle #35Parameter changes

2Temperature

If a flexible volume-variable casing is used, then the thermal coupling is improved, but the mechanical stability deteriorates

Engineering Contradiction:
Improvethermal coupling efficiencyVSAvoidmechanical stability
Core Design Contradiction:
TemperatureVSStability of the object's composition

Solution Approach 1:

The patent utilizes a flexible casing made of elastic material that can deform and conform to the electric device's surface. This flexible shell approach improves thermal coupling by maximizing contact area between the temperature control fluid and the device. The mechanical stability is maintained through the elastic properties of the material and the constrained expansion within the fastening devices, preventing uncontrolled deformation.

Inventive Principle:
Principle #30Flexible shells and thin films

3Temperature

If the casing is allowed to expand freely, then the thermal contact surface is maximized, but the positioning precision deteriorates

Engineering Contradiction:
Improvethermal contact surface areaVSAvoidpositioning precision
Core Design Contradiction:
TemperatureVSManufacturing precision

Solution Approach 1:

The temperature control system is segmented into distinct functional components: the expandable casing for thermal contact, and rigid fastening devices for positioning. The fastening devices act as anchors that define the positional boundaries, while the casing expands only within these defined boundaries. This segmentation allows the casing to maximize thermal contact surface area without compromising positioning precision, as the fastening devices ensure accurate placement.

Inventive Principle:
Principle #1Segmentation

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

The solution improves thermal coupling and efficiency of temperature control by allowing the casing to expand and conform closely to the device, ensuring effective cooling or heating while maintaining mechanical stability and cost-effectiveness.

Implementation Method 1

a volume-variable casing (3) of a flexible material... the volume limited by the casing (3) and forming the fluid channel (2) is greater in a state when flowed through by the temperature control fluid F than in a state in which no temperature control fluid F is flowing through the fluid channel (2)

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

thermal coupling can be improved between the coolant, which is directed through the casing, and the temperature-controlled device which is to be cooled

Methodology Applied
Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentUS11721855B2Temperature control device for controlling the temperature of an electric device
Publication Date: 2023.08.08 MAHLE INT GMBH
  • US11721855B2 patent drawing
  • US11721855B2 patent drawing
  • US11721855B2 patent drawing

AI summary

A temperature control device for controlling a temperature of an electric device may include at least one fluid channel through which a temperature control fluid may be flowable. The at least one fluid channel may be delimited, at least partially, by at least one volume-variable casing of a flexible material. The temperature control device may further include at least one fastening device. The at least one fastening device may surround a fluid chamber through which the temperature control fluid may be flowable. The at least one casing may be coupled to the at least one fastening device such that the fluid chamber is in fluid communication with the at least one fluid channel.