STATOR CAN HOUSING WELDED TO BEARING SUPPORT AND METHOD OF ASSEMBLING A HYBRID TRANSMISSION UTILIZING THE SAME
A motor/generator for a hybrid transmission includes a bearing support configured for attachment to the hybrid transmission. A stator can is bonded directly to the bearing support, possibly by welding. The motor/generator may further include a stator press-fit into said stator can. A method of assembling a hybrid transmission includes welding a stator can to a bearing support, forming a motor/generator housing. A stator is then pressed into the housing. A substantially-complete motor/generator is assembled by installing a rotor, a rotor hub, and a ball bearing into the housing, which are held in the motor/generator housing with a snap ring. The method may include rigidly attaching the substantially-complete motor/generator to a main case. The method may further include testing the substantially-complete motor/generator prior to transporting the motor/generator to a final place of assembly and rigidly attaching the motor/generator to the transmission main case.
1 . A motor/generator for a hybrid transmission substantially enclosed by a transmission main case, comprising:
a bearing support configured for rigid attachment to the transmission main case;
a stator can; and
wherein said stator can is bonded directly to said bearing support.
2 . The motor/generator of claim 1 , wherein said stator can is directly bonded to said bearing support by welding.
3 . The motor/generator of claim 2 , further comprising:
a stator;
wherein said stator can further includes a tubular portion configured to receive said stator; and
wherein said tubular portion is formed from a single piece of material.
4 . The motor/generator of claim 3 , wherein said stator is press-fit into said tubular portion of said stator can.
5 . The motor/generator of claim 4 , wherein said tubular portion is a tubular stamping.
6 . The motor/generator of claim 1 , further comprising:
a stator; and
wherein said stator can further includes a tubular portion configured to receive said stator and formed by tubular stamping.
7 . The motor/generator of claim 6 , wherein said stator is press-fit into said tubular portion of said stator can.
8 . A method of manufacturing a hybrid transmission, comprising:
welding a stator can directly to a bearing support, forming a motor/generator housing;
pressing a stator into said motor/generator housing; and
assembling a substantially-complete motor/generator by installing a rotor, a rotor hub, and a ball bearing into said motor/generator housing.
9 . The method of claim 8 , further comprising rigidly attaching said substantially-complete motor/generator to a transmission main case.
10 . The method of claim 9 , further comprising testing said substantially-complete motor/generator prior to rigidly attaching said substantially-complete motor/generator to said transmission main case.
11 . The method of claim 1 O, wherein said rotor, rotor hub, and ball bearing are held in said motor/generator housing with a snap ring.
12 . The method of claim 9 , further comprising:
assembling said substantially-complete motor/generator at a first facility;
transporting said substantially-complete motor/generator to a second facility; and
wherein said rigidly attaching said substantially-complete motor/generator to said transmission main case occurs at said second facility.
13 . The method of claim 12 , further comprising testing said substantially-complete motor/generator prior to rigidly attaching said substantially-complete motor/generator to said transmission main case at said second facility.