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
- 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.