Vacuum Potting for Stator
Perfect insulation and heat dissipation
Stators built into the electric drives of e-bikes, for instance, are usually fully potted. The potting is used for optimal electrical insulation and heat dissipation solution. In addition, the coils are fixed in place by the potting material to prevent short circuits in the event of vibrations. The stator is protected from dust, moisture and chemical substances. The #functional quality is guaranteed by absolutely bubble-free potting in a vacuum.
Potting Process for Stator
As preparation for the potting process, the stators are first heated up in a furnace. Heating the components eliminates residual moisture, which can negatively impact the potting result. It also improves the flow of the potting material down on the warm housing walls. By adjusting the temperature of the potting material, the viscosity is reduced and the fluidity is improved.
The design and shape of the workpiece also plays a major role in the future potting quality. At the same time, the solenoids must be covered completely with material during the potting process.
During the production process, it is also important to make sure that electrical contacts are not covered with potting material. This is where precise insertion of the material is necessary. The material is therefore applied across multiple dispensing points to ensure even distribution of the material inside the workpiece. These points must be accessible without any constraints and must be taken into account when designing and shaping the workpiece and designing the system. Since no two stators are alike, all relevant parameters, such as the sufficient potting quantity for complete coverage or the material curing time, are determined through testing before production runs. All these requirements are now easily fulfilled by potting in a vacuum. The #functional quality of the stators is thus guaranteed for long and trouble-free operation under a wide range of climatic conditions. And vacuum potting with our integrated solutions also meets high #design requirements.
GLUDITEC System's Advantages
- Completely bubble-free potting of the smallest spaces
- Optimized cycle times
- Quality control and traceability of potting quality
Need further technical consultant? Contact with GLUDITEC:
Hotline: (+84) 969 469 089
Email: info@gluditec.com