In the external load of the temperature difference electric unit open end access resistance is RL, if the thermal flow of the thermal surface of the temperature difference, the temperature difference is established between the thermal difference heat end and the cold end, there will be current flow through The circuit will result in electric power I2RL on the load, thus obtaining a generator that directly converts thermal energy into electrical energy.
When the power generator is working, there is a certain temperature difference between the heat joint and the cold joint, the heat joint should be continuously heated, and the heat is continuously exhausted from the cold joint. The portion of the heat supplied by the heat joint is absorbed as a Peltier fever, and the other part is passed through heat transfer to the cold connector. The amount of heat discharged should be the sum of the heat of the Peltel, which is discharged from the cold connector, and the sum of the heat transfer from the heat connector.
For the thermal balance of the above connector, Tomson fever and the promoter released. Half of the Joule thermal I2Ri generated in the system is transmitted to the hot end, and the other half is released by the cold end, the heat consumed by the heat source is the hot PH of Peltier, because heat transfer migrates to the cold-ended hot PT and return to the heat source The coke thermal three parts composition, that is, the ratio of the thermoelectric conversion efficiency of the temperature difference electrical monomer is the ratio of the heat consumed by the heat source and the heat source.
Several important parameters of the TN5015H series:
Gate touch current 15mA
Peak cutoff voltage (latching voltage) from 600 V
Maximum on-state rising current Di / DT = 100 A / μs
The highest junction temperature is 150 ° C
A typical circuit is large, and is also a basic application of a controllable silicon rectifier as a small control.
Further deepen on the base circuit, as an isolated control circuit. For example, one side is an AC power supply, one side is the digital power supply of the MCU, so it is necessary to use an isolation circuit to control, at which time the optical diode can be used to control the controllable silicon rectifier, the hardware circuit is designed as follows:
Surge current solution. The following circuitry is based on an analog control circuit having only a discrete component, which provides a compact and reliable alternative to the relay to mitigate a surge current that is currently being currently currently currently being currently converted.
The motor control circuit in the motorcycle and industrial drive, the motor control circuit in the electric tool, and the motor control circuit in the kitchen appliance, and the TN5015H in the impact current limit circuit has a very broad application. At the same time, the entire TN series derivatives of ST are also very rich, and the ecological closed loop solves the update replacement of this series of products and may be replaced by a series of issues caused by supply chain risks of "sky unpredictable".
The temperature difference generator is a power generation device that utilizes Sebek effect to directly convert heat into electrical energy. A p-type temperature difference electric element and an N-type temperature difference electrode are connected to the hot end of the metal conductor electrode, and the cold end electrode is connected to the cold end, respectively, constitutes a temperature difference electrical monomer or a separate.
To get an excellent temperature difference electric material, only improve its Seafool coefficient and conductivity, reduce its thermal conductivity. However, the Sleaf Coefficient, the conductivity and thermal conductivity depends to the carrier concentration and mobility, which are associated with each other.
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