Headlight Temperature Module With Peltier Twin-Fan Moisture Control
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Solution Overview
Problem
Modern headlights face challenges in efficiently dissipating waste heat and maintaining pressure equality while being susceptible to moisture ingress, which can lead to overheating, component damage, and fogging due to inadequate sealing and reliance on complex membranes.
Innovation Solution
An integrated temperature control module with a Peltier element and twin fan system that actively heats or cools air flows, separated by a heat-conducting middle section, enhances heat dissipation and moisture management through a collection volume and duct system, ensuring efficient heat transfer and pressure equalization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan and thermoelectric cooler are used to actively remove heat from components, then heat dissipation is improved, but device complexity increases and constant air supply is required
Solution Approach 1:
The patent combines the heat dissipation function and pressure equalization function into a single integrated system. The sealed construction with integrated membrane serves both to maintain pressure balance and to enable heat removal, eliminating the need for separate complex systems for each function.
Solution Approach 2:
The membrane is designed to serve multiple functions simultaneously: it equalizes pressure between internal and external environments while also allowing moisture removal and supporting the heat dissipation process. This multi-functionality reduces overall device complexity.
2Stress or pressure
If air-permeable and water vapor-impermeable membranes are used for pressure equalization, then pressure balance is achieved, but device complexity increases and installation space is required
Solution Approach 1:
The patent integrates the pressure equalization membrane directly into the sealed headlight construction, combining it with the housing structure. This integration eliminates the need for separate membrane installation steps and reduces overall device complexity while maintaining effective pressure balance.
3Reliability
If the headlight is sealed to prevent moisture ingress, then reliability is improved, but pressure equalization becomes difficult
Solution Approach 1:
The patent introduces a membrane as an intermediary element that selectively allows air and water vapor to pass through while maintaining the sealed construction. This intermediary enables pressure equalization and moisture removal without compromising the overall sealing effectiveness against moisture ingress.
4Temperature
If heat is discharged via the cover plate using airstream, then heat dissipation is improved, but effectiveness is limited by material and installation location
Solution Approach 1:
The patent extracts heat from the internal components and transfers it to the external environment through the sealed construction. By using the integrated membrane system and fan to actively move air over heat-conducting elements, heat is effectively removed from the sealed internal volume without requiring the cover plate to be the primary heat dissipation path.
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 system effectively dissipates heat, prevents overheating, and manages moisture by actively cooling or heating the headlight components, while maintaining a sealed environment, thus enhancing performance and reliability.
Implementation Method 1
By applying electrical voltage or power, heat can be created on one side and cold on the other
Implementation Method 2
heat-conducting elements on two sides of this middle section
Implementation Method 3
the conveying device is designed as an integrated twin fan, which on the one hand conveys ambient air from the one side of the middle section and on the other hand conveys ambient air from the other side of the middle section to the separation element
Data Source
AI summary
A temperature control module includes a separation element having a closed middle section and heat-conducting elements on two sides of the middle section, as well as a conveying device for air. The conveying device is designed as an integrated twin fan, which on the one hand conveys ambient air from the one side of the middle section and on the other hand conveys ambient air from the other side of the middle section to the separation element. The middle section has a Peltier element or is designed as such. The temperature control module can be used in a headlight for cooling and/or heating its internal volume.