A graphene defrosting wiper in the field of automobile manufacturing technology

 

The graphene defrosting wiper instantly heats and defrosts the graphene heating film in the wiper core through the vehicle power supply. It is fast and effective, compatible with the existing vehicle wiper system, easy to replace, and convenient for people to drive in the morning in winter.

Graphene Defrosting Wiper Background Technology

 

When the outdoor temperature is low in winter, a layer of ice crystals is often covered on the car glass. If you need to go out urgently in the morning, it takes a long time to melt the frost covering the glass by slowly heating the car air conditioner, which is labor-intensive, oil-intensive and time-consuming.

 

In an emergency, people often use hot water to defrost, hot towels to wipe or scrapers to defrost. However, using hot water to defrost often causes glass cracking due to a sharp increase in temperature difference. Using hot towels to wipe is not only very troublesome, but also often re-freezes due to the low temperature after wiping. Using scrapers to defrost is neither thorough nor convenient.

 

So NOVOFLOW has been seeking a fast, convenient and effective tool and method for defrosting automobile glass.

A graphene defrosting wiper

 

1. Characteristics of graphene materials

 

Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms in a hexagonal honeycomb lattice with sp² hybrid orbitals. The connections between the carbon atoms inside it are very flexible. When external force is applied to graphene, the carbon atom plane will bend and deform, so that the carbon atoms do not have to rearrange to adapt to the external force, thereby maintaining a stable structure. This stable lattice structure gives graphene excellent thermal conductivity.

 

In addition, when the electrons in graphene move in the orbit, they will not be scattered due to lattice defects or the introduction of foreign atoms. Because the interatomic force is very strong, at room temperature, even if the surrounding carbon atoms collide, the interference to the electrons inside the graphene is very small.

 

2. Production of graphene film

 

Currently, the most effective method for producing graphene film is chemical vapor deposition, which uses carbon-containing organic gas as a raw material for vapor deposition to obtain graphene film. The graphene prepared by this method has the characteristics of large area and high quality, but the cost is relatively high at this stage, and the process conditions need to be further improved.

 

The structure of graphene prepared by low-pressure vapor deposition can cross the metal step, and a continuous and micron-scale single-layer carbon structure gradually forms on the Ir surface. Millimeter-scale single-crystalline graphene is obtained by surface segregation. Centimeter-scale graphene and epitaxial growth of graphene on polycrystalline Ni film were discovered by some scholars. The surface of a 300-nanometer-thick Ni film was heated at 1000°C and exposed in a CH4 atmosphere. After a period of reaction, a large area of ​​a few layers of graphene film will be formed on the metal surface.

 

The graphene heating film has super thermal conductivity, minimum heat capacity, high electrothermal conversion efficiency, fast heating rate, good electrical stability and flatness, low electromagnetic radiation and no harm to the human body.

3. Electric heating wiper system

 

Most of the graphene composite wiper strips currently used in automobiles have good physical and mechanical properties, as well as excellent weather resistance, corrosion resistance and other chemical properties, but do not have heating and defrosting functions.

 

An electrically heated wiper and an electrically heated wiper system developed by NOVOFLOW are designed to solve the problem that existing wipers are difficult to balance between not damaging the glass and removing ice, snow and debris. This graphene defrosting wiper instantly heats the graphene heating film in the wiper core through the vehicle power supply, and drives the wiper to remove frost on the front windshield of the car. It is fast and effective, compatible with the existing vehicle wiper system, easy to replace, and convenient for people to drive in the morning in winter.

 

The electrically heated wiper includes a wiper swing arm and a wiper blade assembly. The wiper blade assembly includes a mounting sleeve and a wiper strip. The mounting sleeve has a receiving cavity. The wiper strip is connected to the mounting sleeve and seals the opening of the receiving cavity. The inner wall of the mounting sleeve is connected to a first electric heating wire. The wiper blade assembly is provided with a water spray channel.

 

The electrically heated wiper also includes an electrically heated water pipe. One end of the electrically heated water pipe has a connecting pipe for connecting the receiving cavity and a water spray pipe directly facing the surface of the front windshield. The inner wall of the electric heating water pipe is provided with a second electric heating wire that can be electrically heated.

 

This electric heating wiper can clean different objects on the windshield in a hierarchical manner through different water outlet modes and different temperatures, and can effectively remove impurities and ice and snow on the basis of protecting the windshield. However, it uses electric heating wire heating and is equipped with a hot water storage chamber. The scraper body is heavy and large in size, and is not compatible with the existing automobile wiper system, and is not very convenient to use.

As a professional car wiper manufacturer and supplier, NOVOFLOW not only provides newly developed graphene defrosting wipers, but also provides various conventional windshield wipers, such as multi-function wipers, classic wipers, composite wipers, boneless wipers, winter snow wipers, truck and bus wipers, etc. We provide customers with customized wiper solutions to perfectly solve the various wiper needs of automakers.

 

How to install car windshield wipers?

If you want to learn how to install the wipers, please check out NOVOFLOW’s installation video.