Low Power Thermoelectric Generators

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LPTG-principle The Low Power Thermoelectric Generator works after the thermoelectric principle and converts thermal energy directly into electrical energy.

Wherever a temperature difference can be used, it is a self-sufficient energy source with an output of few 10 µW at voltages in the volt range.

LPTG-size Because of using thin film technology a miniaturized construction with only a volume of 0.2 cm3 has been achieved for the first time and its electrical data are compatible with the requirements of recent micro systems.

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Applications

The Low Power Thermoelectric Generator is a new, self-sufficient energy source for micro and sensor systems in consumer and industrial applications, such as 
 

  • electronic heat cost allocators,
  • electronic wrist watches,
  • active transponders,
  • self-sufficiently powered temperature displays,
  • self-sufficiently powered temperature warning systems,
  • recharging of mobil electronics.
The design of the thermoelectric generator and its electrical and thermal parameters are adjustable for specific applications.

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Technical data and typical parameters 

typical parameters
 
Legend
 
U, I, P Electrical voltage, current, power
µ =Ra/Ri
Ra, Ri load resistance, internal resistance
Po electrical power at µ = 1
T, TM temperature differenz, average Temperatur
 
Geometry/ Mass
 
length  9.0 mm +/-0.05 mm
width 7.5 mm +/-0.05 mm
hight 2.8 mm +/-0.1 mm
connection  2 x 80 mm, diameter 0.2 mm
mass 390 mg
 

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Demonstrator

Demonstrator This appliance is used to visualize the mode of operation and performance of the Low Power Thermoelectric Generator. The principle assembly consist of the following parts: temperature control, temperature displays, low power management with load and displays for the electrical consumtion of the load. 

The demonstrator create a fixed temperature difference between the warm and cold side, that means between the heat couple plates of the Low Power Thermoelectric Generator (LPTG). As a result a thermoelectric voltage is generated and in the closed circuit an electrical current flows. The load (wristwatch) and the low power management are directly and only supplied by the LPTG. 

The four digital displays show the technical working states of the electrically separate temperature control circuit (warm side and cold side temperature) and load (wristwatch) circuit (electrical voltage and current of the load).

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Company | Products | Services | Contacts | Homepage | News
D.T.S. • Thin Film Thermoelectric Generator Systems GmbH
Köthener Str. 34 • D-06118 Halle 
Telephon/Telefax: +49 (0) 345  52 44 292
e-mail: dts@dts-generator.com

last update: 07/2002