The concept behind the e-car (a car that runs on the temperature difference between two cells) is based on the principle of thermoelectric effect. This effect is the conversion of temperature differences into electric voltage and vice versa. It is achieved using thermoelectric materials, which are capable of generating electricity when there is a temperature gradient across them.
In the case of the e-car, two cells made of different thermoelectric materials are used. One cell is exposed to a higher temperature, while the other cell is exposed to a lower temperature. The temperature difference between these two cells creates a voltage difference, which can be used to power the car.
The thermoelectric materials used in the cells are typically semiconductors, which have the property of generating electricity when there is a temperature difference across them. These materials are carefully selected to have a high thermoelectric efficiency, which determines the amount of electricity that can be generated for a given temperature difference.
The generated electricity is then used to power an electric motor, which drives the wheels of the car. The motor is connected to a battery, which stores the excess electricity generated by the thermoelectric cells. This stored electricity can be used when there is no temperature difference between the cells, such as when the car is stationary or when the temperature difference is not sufficient to generate enough electricity.
Overall, the concept behind the e-car is to utilize the temperature difference between two cells to generate electricity and power the car. This technology has the potential to reduce the reliance on traditional fuel sources and provide a more sustainable and environmentally friendly transportation option.