# US 11,121,605 B2 · Hybrid module with clutch balance chamber > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,121,605 B2 - Document ID: US11121605B2 - Status: Granted - Kind: B2 - Application number: 16/052,439 - Filed: 2018-08-01 - Published: 2019-02-07 - Granted: 2021-09-14 - Earliest claimed: 2017-08-07 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Schaeffler Technologies AG & Co. KG - Inventors: Jeremy Vanni; Matthew Payne; John Ramsey - Web page: https://patentgrep.com/patent/US11121605B2 ## CPC - H02K 7/108: with friction clutches - B60K 6/387: Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means - B60K 6/40: characterised by the assembly or relative disposition of components - B60K 6/48: Parallel type - F16D 25/0635: with flat friction surfaces, e.g. discs - F16D 25/12: Details not specific to one of the before-mentioned types - H02K 1/28: Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures - H02K 1/32: with channels or ducts for flow of cooling medium - H02K 7/003: {Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28)} - H02K 7/006: {Structural association of a motor or generator with the drive train of a motor vehicle} - H02K 7/10: Structural association with clutches, brakes, gears, pulleys or mechanical starters - H02K 9/19: for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil - B60K 2006/4825: {Electric machine connected or connectable to gearbox input shaft} - Y02T 10/62: Hybrid vehicles - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A hybrid module includes a motor housing, an electric motor, a shaft, a torque converter housing, a backing plate, a piston, and a hub. The motor housing includes a first flow passage. The electric motor includes a rotor and stator. The shaft is drivingly engaged with the rotor and includes a second flow passage arranged for fluid communication with the first flow passage. The torque converter housing is drivingly engaged with the rotor. The backing plate is fixed to the torque converter housing. The piston is sealed to the torque converter housing and the backing plate and forms at least a portion of a first fluid chamber and a second fluid chamber. The hub includes a third flow passage arranged for fluid communication with the second flow passage and one of the first fluid chamber or the second fluid chamber. ## Claims ### Claim 1 A hybrid module comprising: a motor housing including a first flow passage; an electric motor including a rotor and stator; a shaft drivingly engaged with the rotor and including a second flow passage arranged for fluid communication with the first flow passage; a torque converter housing non-rotatably connected to the rotor; a backing plate fixed to the torque converter housing; a piston sealed to the torque converter housing and the backing plate and forming at least a portion of a first fluid chamber and a second fluid chamber; and, a hub including a third flow passage arranged for fluid communication with the second flow passage and one of the first fluid chamber or the second fluid chamber. ### Claim 2 (depends on 1) The hybrid module of claim 1 further comprising a seal for sealing the hub to the shaft. ### Claim 3 (depends on 1) The hybrid module of claim 1 wherein the shaft and the hub are integrally formed from a single piece of material. ### Claim 4 (depends on 1) The hybrid module of claim 1 wherein the first fluid chamber is at least partially formed by the torque converter housing and the second fluid chamber is at least partially formed by the backing plate. ### Claim 5 (depends on 4) The hybrid module of claim 4 wherein the third flow passage is arranged for fluid communication with the second fluid chamber. ### Claim 6 (depends on 4) The hybrid module of claim 4 wherein the hub comprises a fourth flow passage. ### Claim 7 (depends on 6) The hybrid module of claim 6 wherein the fourth flow passage is arranged for fluid communication with the second fluid chamber. ### Claim 8 (depends on 7) The hybrid module of claim 7 wherein the hub includes a fifth flow passage in fluid communication with the fourth flow passage. ### Claim 9 A hybrid module comprising: a motor housing including a first flow passage; an electric motor including a rotor and stator; a shaft drivingly engaged with the rotor and including a second flow passage arranged for fluid communication with the first flow passage; a torque converter housing non-rotatably connected to the rotor; a backing plate; and, a piston sealed to the torque converter housing, the backing plate, and the shaft, and forming at least a portion of a first fluid chamber and a second fluid chamber. ### Claim 10 (depends on 9) The hybrid module of claim 9 wherein the torque converter housing is sealed to the shaft. ### Claim 11 (depends on 9) The hybrid module of claim 9 further comprising a sealing plate fixed to the shaft wherein the torque converter housing is sealed to the sealing plate. ### Claim 12 (depends on 9) The hybrid module of claim 9 further comprising a seal for sealing the housing to the shaft. ### Claim 13 (depends on 9) The hybrid module of claim 9 wherein the first fluid chamber is at least partially formed by the torque converter housing and the second fluid chamber is at least partially formed by the backing plate. ### Claim 14 (depends on 9) The hybrid module of claim 9 wherein the second flow passage is arranged for fluid communication with the first fluid chamber. ### Claim 15 (depends on 9) The hybrid module of claim 9 further comprising a third flow passage for cooling the electric motor arranged for fluid communication with the first flow chamber.