Hybrid vehicle drive device

• US 20070007059A1
• Filed: 07/05/2006
• Published: 01/11/2007
• Est. Priority Date: 07/05/2005
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.)
• Inventors: Yamaguchi, Yasuo, Nomura, Shinichi, Yamashita, Mitsugi, Inuzuka, Takeshi
• Granted Patent: US 7,992,661 B2
• Time in Patent Office: Days
• US Class Current: 180/65.290
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/405 Housings
• CPC Class Codes: B60K 6/442 Series-parallel switching type
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2220/50 Structural details of electrical machines
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/441 Speed
• CPC Class Codes: B60L 2240/507 Operating parameters
• CPC Class Codes: B60L 2270/145 Structure borne vibrations
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: F16D 25/0638 with more than two discs, e.g. multiple lamellae
• CPC Class Codes: F16F 15/123 Wound springs F16F15/1213, F16F15/1216, F16F15/127 take precedence
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

Abstract

A hybrid vehicle drive device includes a clutch that transmits and separates a driving force between an engine output shaft and a transmission input shaft; a first electric motor having a first rotor that is connected to an engine output shaft side of the clutch; a second electric motor having a second rotor that is connected to an transmission input shaft side of the clutch; and a radial vibration suppressing device, wherein (1) the first electric motor is connected to the engine output shaft via the radial vibration suppressing device, and (2) the radial vibration suppressing device suppresses a vibration of the engine output shaft in a radial direction.

Claims

1. A hybrid vehicle drive device, comprising:

a clutch that transmits and separates a driving force between an engine output shaft and a transmission input shaft;

a first electric motor having a first rotor that is connected to an engine output shaft side of the clutch;

a second electric motor having a second rotor that is connected to an transmission input shaft side of the clutch; and

a radial vibration suppressing device, wherein (1) the first electric motor is connected to the engine output shaft via the radial vibration suppressing device, and (2) the radial vibration suppressing device suppresses a vibration of the engine output shaft in a radial direction.

2. The hybrid vehicle drive device according to claim 1, wherein the radial vibration suppressing device has a stepped shape that includes an inner portion and an outer portion with the inner portion located on the engine output shaft side relative to the outer portion

3. The hybrid vehicle drive device according to claim 2, wherein the radial vibration suppressing device is a transmission plate with a plate shaped body permitting bending in the radial direction, and one of the engine output shaft and the first rotor of the first electric motor is connected to the inner portion of the radial vibration suppressing device and the other of the engine output shaft and the first rotor of the first electric motor is connected to the outer portion of the radial vibration suppressing device.

4. The hybrid vehicle drive device according to claim 3, wherein the first rotor of the first electric motor is connected to the transmission plate via a flywheel.

5. The hybrid vehicle drive device according to claim 1, wherein the first rotor of the first electric motor is connected to the engine output shaft via a damper that can absorb vibration in a rotational direction.

6. The hybrid vehicle drive device according to claim 5, further comprising:

an intermediate shaft that is connected between the clutch and the engine output shaft, wherein the first rotor of the first electric motor and the damper are each separately spline-engaged with the intermediate shaft.

7. The hybrid vehicle drive device according to claim 5, further comprising:

an intermediate shaft that is connected between the clutch and the engine output shaft, wherein the first rotor of the first electric motor and the damper are integrally coupled by a coupling member, and the coupling member is spline-engaged with the intermediate shaft.

8. The hybrid vehicle drive device according to claim 3, wherein the first rotor of the first electric motor is connected to the engine output shaft via a damper that can absorb vibration in the rotational direction.

9. The hybrid vehicle drive device according to claim 8, further comprising:

an intermediate shaft that is connected between the clutch and the engine output shaft, wherein the first rotor of the first electric motor and the damper are each separately spline-engaged with the intermediate shaft.

10. The hybrid vehicle drive device according to claim 8, further comprising:

an intermediate shaft that is connected between the clutch and the engaging output shaft, wherein the first rotor of the first electric motor and the damper are integrally coupled by a coupling member, and the coupling member is spline-engaged with the intermediate shaft.

11. The hybrid vehicle drive device according to claim 2, wherein the radial vibration suppressing device includes a step in a middle portion in the radial direction.

12. The hybrid vehicle drive device according to claim 2, wherein the inner portion and the outer portion of the radial vibration suppressing device are flat plates that extend substantially in the radial direction.

13. The hybrid vehicle drive device according to claim 2, wherein the radial vibration suppressing device has a thickness of 2-3 mm.

14. The hybrid vehicle drive device according to claim 2, further comprising a flywheel that connects the radial vibration suppressing device with the first electric motor.

15. A hybrid vehicle drive device, comprising:

a clutch that transmits and separates a driving force between an engine output shaft and a transmission input shaft;

a first electric motor having a first rotor that is connected to an engine output shaft side of the clutch;

a second electric motor having a second rotor that is connected to an transmission input shaft side of the clutch; and

a transmission plate, wherein (1) the first electric motor is connected to the engine output shaft via the transmission plate, and (2) the transmission plate suppresses a vibration of the engine output shaft in a radial direction.

16. The hybrid vehicle drive device according to claim 15, wherein the transmission plate has a stepped shape that includes an inner portion and an outer portion, with the inner portion located on the engine output shaft side relative to the outer portion

17. The hybrid vehicle drive device according to claim 16, wherein the transmission plate includes a step in a middle portion in the radial direction.

18. The hybrid vehicle drive device according to claim 16, wherein the transmission plate has a thickness of 2-3 mm.

19. The hybrid vehicle drive device according to claim 16, further comprising a flywheel that connects the transmission plate with the first electric motor.

20. The hybrid vehicle drive device according to claim 16, wherein the inner portion and the outer portion are flat plates that extend substantially in the radial direction.