ESPRYX™ production process
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
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.