Hybrid module

1. A stator assembly for a hybrid module comprising:

a stator carrier comprising an inner cylindrical surface;

a stator segment installed in the inner cylindrical surface; and

a water jacket is welded to the stator carrier to enclose a sealed chamber therebetween, wherein:

the stator carrier or the water jacket comprises a radial wall with an aperture; and

the stator assembly is secured to a transmission case for a multi-speed planetary transmission by a fastener installed in the aperture.

2. The stator assembly of claim 1 wherein the water jacket is welded to the stator carrier by a pair of circumferential welds at opposite ends of the sealed chamber.

3. The stator assembly of claim 1 further comprising a fluid port fixed to the water jacket and arranged to guide a fluid into or out of the sealed chamber to cool the stator assembly.

4. The stator assembly of claim 1 further comprising a resolver stator, wherein:

the stator carrier or the water jacket comprises an extension; and

the resolver stator is fixed to the extension.

5. The stator assembly of claim 4 wherein the resolver stator is fixed to the extension by riveting.

6. The stator assembly of claim 4 further comprising a high voltage bus bar electrically connected to the stator segment, wherein:

the extension comprises an opening for connecting the high voltage bus bar to a high voltage transmission connector.

7. The stator assembly of claim 1 wherein the stator segment is installed in the inner cylindrical surface by shrink fitting.

8. The stator assembly of claim 1 further comprising a resolver stator, wherein:

the water jacket is disposed radially outside of the stator carrier and fixed to the stator carrier by a pair of circumferential welds at opposite ends of the sealed chamber;

the water jacket comprises an extension extending axially away from the stator segment and radially inward; and

the resolver stator is riveted to the extension.

9. A hybrid module comprising:

the stator assembly of claim 8 ;

a rotor assembly disposed radially inside of the stator assembly, the rotor assembly comprising:

a rotor carrier;

a torque converter impeller fixed to the rotor carrier; and

a resolver rotor fixed to the torque converter impeller and axially aligned with the resolver stator.

10. A hybrid module comprising:

a stator assembly comprising:

a stator carrier comprising an inner cylindrical surface;

a stator segment installed in the inner cylindrical surface;

a water jacket fixed to the stator carrier to enclose a sealed chamber therebetween, the water jacket or the stator carrier comprising an extension extending axially away from the stator segment and radially inward; and

a resolver stator fixed to the extension; and

a rotor assembly comprising:

a rotor carrier;

a torque converter impeller fixed to the rotor carrier; and

a resolver rotor fixed to the torque converter impeller and axially aligned with the resolver stator.

11. The hybrid module of claim 10 , wherein the water jacket is disposed radially outside of the stator carrier and fixed to the stator carrier by a pair of circumferential welds at opposite ends of the sealed chamber.

12. The hybrid module of claim 10 wherein:

the water jacket comprises the extension; and

the resolver stator is riveted to the extension.

13. The hybrid module of claim 10 further comprising a fluid port fixed to the water jacket and arranged to guide a fluid into or out of the sealed chamber to cool the stator assembly.

14. The hybrid module of claim 10 , wherein:

the stator assembly further comprises a high voltage bus bar electrically connected to the stator segment; and

the extension comprises an opening for connecting the high voltage bus bar to a high voltage transmission connector.

15. The hybrid module of claim 10 , wherein the stator assembly is secured to a transmission case for a multi-speed planetary transmission.