ESPRYX™ production process

Key features:

  • Based on well-established industrial production machinery

  • Automated & scalable in output and size 

  • Quality control of critical parameters at any point of the process (e.g. electrical resistivity)

  • Design flexibility for the resulting modules

  • Potential compatibility with several TE materials

  • Smart module design enabling both Peltier & TEG module production 

  • Strong IP

  • Successful pilot series production distributed to test costumers

Detailed step description:

  • Thermoelectric generators are based on special semiconductor materials. Two paired material types, so called n-type and p-type, are delivered. First, the two material ingots are pulverized. The powder is then filled into tablet shapes.

  • In a tableting process the powder is cold pressed into so called TE legs. 

  • In a fully automated pick-and-place process step the n-type and p-legs are positioned by a robot in a prepared matrix filling the drilled holes.

  • The filled matrix is placed in a sinter oven for thermal treatment of the semiconductor legs to achieve the high TE module performance.

  • In the metallization step metal layers are deposited onto the legs to establish electrical contact points.

  • Robust electrodes are placed on top of the prepared matrix in a fully automated pick-and-place process ready to be joined to form the module.

  • The loosely placed electrodes are now bonded onto the matrix in an oven employing a thermal process.

  • The final production step consists of the spray deposition of the black top coating providing electrical insulation for the electrodes at the interface and corrosion protection.

  • For the module implementation wires are connected to the two module contacts.