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Automobile sunroof functional film integrating functions of temperature regulation and rainfall sensing

A technology for temperature regulation and car sunroof, applied in the direction of rainfall/precipitation gauges, measuring devices, vehicle components, etc., can solve the problem of increasing the energy consumption of heating in the car, so as to promote energy saving, curb global warming, and simple devices Effect

Active Publication Date: 2021-08-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of radiant film can only achieve continuous cooling. In winter or when the ambient temperature inside and outside the car is low, continuous cooling will have a negative effect and increase the energy consumption of heating in the car.

Method used

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  • Automobile sunroof functional film integrating functions of temperature regulation and rainfall sensing
  • Automobile sunroof functional film integrating functions of temperature regulation and rainfall sensing
  • Automobile sunroof functional film integrating functions of temperature regulation and rainfall sensing

Examples

Experimental program
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Effect test

Embodiment 1

[0041] This embodiment provides a car sunroof functional film that integrates temperature regulation and rain sensing functions. In this embodiment, the radiation cooling insulating layer 1 selects PTFE film, the conductive layer 2 selects ITO film, and the thermochromic layer 3 selects temperature-sensitive hydrogel. The heat absorbing layer 4 chooses chrome film, size: 1200mm×740mm, the specific structure is as follows figure 1 shown.

[0042]The ITO thin film is a conductive thin film with better light transmittance, prepared by magnetron sputtering, and the thickness is 0.4mm; the PTFE thin film is prepared by drop casting, and the PTFE precursor solution is deposited on the above-mentioned ITO thin film, and the Heating at ℃ for 15 minutes for curing treatment to obtain a closely connected ITO film and PTFE film on the glass substrate. The thickness of the PTFE film is 10 μm. Finally, the ITO / PTFE composite film is peeled off from the glass substrate; the temperature-sens...

Embodiment 2

[0045] This embodiment provides another car sunroof functional film that integrates temperature regulation and rain sensing functions. The radiation cooling insulating layer 1 selects polydimethylsiloxane (PDMS) film, the conductive layer 2 selects ITO film, and the thermochromic layer 3 Select temperature-sensitive hydrogel material, heat-absorbing layer 4 No material is selected, that is, heat-absorbing layer is not used, and temperature-sensitive hydrogel is directly encapsulated between the car sunroof glass and ITO / PDMS composite film, size: 1200mm×740mm.

[0046] The preparation method and size of the ITO thin film and the temperature-sensitive hydrogel are the same as in Example 1; the PDMS thin film is prepared by the pulling coating method, and the ITO thin film is used as the substrate, and the PDMS matrix and the curing agent are uniformly mixed at a mass ratio of 10:1. Cured at 60°C for 2 hours, the thickness is 1 μm, and the extinction coefficient of PDMS is as fol...

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Abstract

The invention discloses an automobile sunroof functional film integrating functions of temperature regulation and rainfall sensing, the functional film realizes the functions of rainfall sensing and temperature regulation by stacking a plurality of layers of films on an automobile sunroof, and the specific structure of the functional film comprises a heat absorption layer, a thermochromic layer, a conductive layer and a radiation cooling insulation layer from bottom to top, the thermochromic layer is sealed and packaged between the heat absorption layer and the conductive layer, the conductive layer is connected with the polar plate through a wire, and the polar plate is connected with an automobile windscreen wiper controller, so that a voltage signal generated during raining is transmitted to the controller. The functional film can cool in summer, preserve heat in winter and generate electric signals through friction power generation in rainy days, and is suitable for different weather conditions.

Description

technical field [0001] The invention relates to the fields of radiation cooling technology and friction power generation technology, in particular to a car sunroof functional film integrating the functions of temperature regulation and rainfall sensing. Background technique [0002] The traditional car sunroof is installed on the top of the car, which can effectively circulate the air. However, in the hot summer, especially when the car is parked, the sunroof is closed and the car is in a closed environment. The transparent glass has a high solar transmittance, and the car absorbs heat and heats up, which cannot satisfy people. thermal comfort needs. Generally, window heat insulation films or non-transparent heat insulation devices are used to reduce the transmission of infrared light from the sun, but only to reduce heat absorption. After a car is parked outdoors for a long time, it is still necessary to turn on the air conditioner for cooling, which increases energy consum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/32B32B15/00B32B15/085B32B3/08G01W1/14H02N1/04
CPCB32B9/00B32B9/041B32B27/322B32B15/00B32B15/085B32B3/08G01W1/14H02N1/04B32B2605/08B32B2307/202B32B2307/30B32B2307/206Y02T10/88
Inventor 孟正华曹博语夏志林郭巍周睿华林
Owner WUHAN UNIV OF TECH
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