Energy supply housing

Different housings are used to protect electronic components, such as battery systems or power electronics, from external environmental influences and to attach the components to the interior in order to ensure that they function properly during vehicle operation. The requirements for the housing depend on the electronic system and drive concept. Different materials and manufacturing processes are currently used.

FEATURES

• Unstable, thin-walled components (susceptible to vibration)
• Construction as a cast tub or as a frame construction made of hollow profiles
• Partly low-silicon aluminium
• Large area (2 x 3 m)
• Mainly drilling and milling operations and threading
• Accuracy and surface requirements for cable bushing and cooling
  connections

Extruded profile

Extruded profile

Due to the increasing size of the battery, modular concepts for different performance classes and ranges are used. For this reason, extruded aluminium profiles are welded to form a housing.

MACHINING REQUIREMENTS

• Thin material with several layers
• Drilling: Vibrations and burr formation. Ring formation on the tool → Helix milling/orbital drilling prevents burrs and rings
• Milling: Thin material tends to vibrate → Fewer vibrations through optimised
  cutting edge geometry

Die-cast housing

Boîtiers moulés sous pression

Pour l'intégration de l'électronique de puissance ou de systèmes de batteries plus petits pour les véhicules hybrides, des boîtiers en aluminium moulé sous pression sont généralement utilisés. Les structures de boîtier complexes sont conçues avec des canaux de refroidissement intégrés.

EXIGENCES D'USINAGE

• Fraisage de surfaces d'étanchéité (exigences de surface en partie spécifiques)
• Fraisage des surfaces de réception pour l'électronique et les cellules de batterie avec un long porte-à-faux de l'outil
• Perçage de carottage (> 50 alésages par composant)

Aperçu de l'outil