Charger, in particular an exhaust gas turbo charger, for a drive device and corresponding drive device

Patent metadata

Field	Value
Publication number	US-10450948-B2
Application number	US-201615550893-A
Country	US
Kind code	B2
Filing date	Jan 19, 2016
Priority date	Feb 27, 2015
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

An exhaust gas turbocharger for a drive device, having a compressor that is capable of being electrically supported or driven by a media gap motor, the media gap motor having a rotor that is operatively connected to a bearing shaft of a compressor impeller of the compressor, and having a stator that surrounds the rotor at least in some regions in the circumferential direction relative to an axis of rotation of the bearing shaft. A power electronics for controlling at least one electrical winding of the stator surrounds the axis of rotation at least in some regions in the circumferential direction, a cooling jacket that stands in touch contact with the stator and/or with the power electronics being provided for cooling the stator and/or the power electronics.

First claim

What is claimed is:

1. An exhaust gas turbocharger for a drive device, comprising:
a compressor that is drivable by a gap motor, the gap motor having a rotor that is operatively connected to a bearing shaft of a compressor impeller of the compressor, and having a stator that surrounds the rotor at least in some regions in a circumferential direction relative to an axis of rotation of the bearing shaft;
wherein the gap motor in an axial direction that is parallel to the axis of rotation is situated in an air inlet upstream of the compressor wheel,
wherein a power electronics for controlling at least one electrical winding of the stator surrounds the axis of rotation in the at least in some regions in the circumferential direction,
a cooling jacket that stands in touch contact with the stator and the power electronics, being provided for cooling the stator and the power electronics by providing a liquid coolant within the cooling jacket, and
wherein the cooling jacket in the axial direction is arranged between the power electronics and the compressor housing and wherein an inner circumference of the cooling jacket stands in touch contact with an outer circumference of the stator.

2. The turbocharger as recited in claim 1 , wherein the cooling jacket surrounds the stator at least partly in the circumferential direction.

3. The turbocharger as recited in claim 1 , wherein an end face that limits the cooling jacket in an axial direction lies on an end face of the power electronics.

4. The turbocharger as recited in claim 1 , wherein, seen in the axial direction, the cooling jacket is situated between the power electronics and a compressor housing of the compressor.

5. The turbocharger as recited in claim 3 , wherein the cooling jacket lies on the compressor housing with a further end face, situated opposite the end face.

6. The turbocharger as recited in claim 1 , wherein the cooling jacket is provided additionally for at least one of: cooling of air exiting from the compressor at a compressor outlet, and cooling a compressor housing of the compressor.

7. A drive device, having comprising:
an exhaust gas turbocharger, the turbocharger including a compressor which is drivable by a gap motor, the gap motor having a rotor that is operatively connected to a bearing shaft of a compressor impeller of the compressor, and having a stator that surrounds the rotor at least in some regions in the circumferential direction relative to an axis of rotation of the bearing shaft;
wherein the gap motor in an axial direction that is parallel to the axis of rotation is situated in an air inlet upstream of the compressor wheel wherein a power electronics for controlling at least one electrical winding of the stator that surrounds the axis of rotation of the rotor in the at least in some regions in the circumferential direction,
a cooling jacket that stands in touch contact with the stator and the power electronics being provided for cooling the one of the stator and the power electronics by providing a liquid coolant within the cooling jacket, and
and wherein the cooling jacket in the axial direction is arranged between the power electronics and the compressor housing and wherein an inner circumference of the cooling jacket stands in touch contact with an outer circumference of the stator.

Assignees

• Bosch Gmbh Robert

Inventors

• Baeuerle Michael
• Nau Michael

Classifications

• F04D25/0606

  the electric motor being specially adapted for integration in the pump · CPC title

• H02K5/203

  specially adapted for liquids, e.g. cooling jackets · CPC title

• F04D25/068

  Mechanical details of the pump control unit (pump control details F04D27/00) · CPC title

• H02K5/128

  using air-gap sleeves or air-gap discs · CPC title

• F02B39/005

  Cooling of pump drives · CPC title