Before talking about new energy vehicles and hydrogen f […]
Before talking about new energy vehicles and hydrogen fuel cell rubber gaskets, let's think about the problems existing in various types of vehicles.
With the industrial revolution for more than 100 years, various problems such as comfort, safety, and speed have been continuously improved. However, the problem of energy has not been completely solved. What are the problems?
The non-renewable and polluting gasoline/diesel used in traditional fuel vehicles, the short battery life and long charging time of pure electric vehicles, the gasoline-electric hybrid mainly uses fuel, but the energy consumption is slightly lower. Intensified, more and more car manufacturers are aware of the unsustainability of traditional fuel vehicles, and it is imminent to find new energy as a power source. It can be said that which manufacturer solves the energy problem, whoever has an absolute advantage in future competition, in this way Under the background of the fuel cell, it has entered everyone's field of vision. Unlike ordinary batteries, it is a generator, which is a device that converts the chemical energy of fuel (such as methanol/natural gas, etc.) into electrical energy, rather than first. When the electricity is stored and used, it is released. Using hydrogen as a fuel cell, the energy conversion rate is 60%-80%, which is 2-3 times that of a traditional internal combustion engine, and there are abundant sources of hydrogen production, such as electrolysis of water, methanol, ethanol, natural gas, etc. It can be used. It was actually used in the aerospace field for a long time, but because of the immaturity of hydrogen production, storage and transportation, application and other technologies at that time, it was not widely used, especially the hydrogen fuel cell rubber gasket was not widely used at that time. There is no particularly good solution. After decades of development, hydrogen fuel cells have made great progress. Toyota, in particular, has more than 10,000 patent applications for hydrogen fuel cells, and it has released the world's first volume. The Mirai, a hydrogen-producing fuel cell vehicle, can travel 500 kilometers with 5 kilograms of hydrogen.
Next, let's talk about the requirements that the hydrogen fuel cell rubber gasket, one of the core components in hydrogen fuel vehicles, must meet:
1. Insulation, the fuel cell stack is composed of multiple single cells. If a short circuit is caused, the consequences will be disastrous.
2. Gas barrier properties, to ensure the tightness of oxygen and hydrogen, can not leak,
3. The material should be able to absorb shock and vibration, because it works in the car, and the bumps in driving are inevitable
4. It must be resistant to acid and high temperature, which is the most basic