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Views: 59 Author: Site Editor Publish Time: 2019-09-16 Origin: Site
When the high frequency electric energy reaches the transducer, it is transformed into vibration mechanical energy of the same frequency. The vibration mechanical energy breaks the liquid into UM droplets.
At present, the frequency of 60Khz is dominant in the field of energy application.
1. Reduce waste
2. Atomization uniformity
3. Controllable Coating Thickness
4. Not easy to block
I. Photovoltaic Cells
Solar photovoltaic cells (PV cells) are used to convert solar energy directly into electrical energy. The structure of photovoltaic cells is mainly as follows:
1. Base 2 Fe 3. Active Layer/Buffer Layer 4. TCO Conductive Coating
Ultrasonic is mainly responsible for spraying active layer/buffer layer and TCO layer.
Active Layer/Buffer Layer: The main substances are CIS, CIGS, CDTE, CZTS, DSC and other photovoltaic organic compounds. These photovoltaic compounds are involved in photovoltaic reactions.
Superiority of ultrasonic: Each layer of these substances is uniformly coated. Ultrasound has better uniformity than high pressure injection.
TCO Layer: Because the photovoltaic organic compounds in the active layer/buffer layer are not conductive, the TCO coating can collect current because of its excellent conductivity.
Superiority of ultrasonic: TCO coating liquid is expensive, traditional high pressure spraying will sputter. In the process of ultrasonic spraying, almost no liquid will be sputtered, which effectively reduces the waste of liquid.
II. Fuel Cells
Fuel cell is a kind of power generation device which converts chemical energy existing in fuel and oxide into electric energy.
Ultrasonic is mainly responsible for spraying PEM catalyst layer and GDL gas diffusion layer of fuel cell.
From the structure diagram, we can see that the catalyst layer is inside the gas diffusion layer.
PEM: The main function of PEM catalyst is to accelerate the reaction of fuel and oxide. Its main content is platinum, platinum is a rare metal, limited resources, relatively expensive, the current control of fuel cell thickness of 20-37um.
GDL: GDL gas diffusion layer mainly supports catalyst layer and ventilation and drainage. The thickness of GDL gas diffusion layer is required in the range of 100um-400um.
Superiority of ultrasonic: Compared with high pressure spraying, ultrasonic can control the thickness of coating and make the coating thickness meet the standard requirements.
