[특허]High speed traction motor for a vehicle also having an auxiliary open Brayton cycle power assist and range extender

BorgWarner Inc.

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High speed traction motor for a vehicle also having an auxiliary open Brayton cycle power assist and range extender

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60K-006/40 B60K-006/48 B60K-003/04 B60W-010/08 B60K-006/24 B60K-005/04 B60K-017/04 B60L-011/14 B60L-011/18 B60L-015/20 B60W-020/00 B60K-007/00
출원번호	US-0645907 (2015-03-12)
등록번호	US-9505298 (2016-11-29)
발명자 / 주소	Fraser, Brock Mott, Philip J
출원인 / 주소	BorgWarner Inc.
대리인 / 주소	Tucker, A. Michael
인용정보	피인용 횟수 : 0 인용 특허 : 12

초록
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A drive system (1) for a vehicle includes an electric motor (12) and a gas turbine assembly (28). The electric motor (12) includes a rotor (16) coupled to a drive shaft (14). The gas turbine assembly (28) includes a turbine (30) including a turbine wheel (34) mounted on the drive shaft (14), a burner (70) that burns fuel and provides exhaust gas to drive the turbine wheel (34), and a compressor (50) that provides compressed air to the burner (70). The gas turbine assembly (28) is coupled to the drive shaft (14) of the electric motor (12). The drive system (1) also includes gear train unit (90) that has the drive shaft (14) as an input shaft, has an output shaft (94) connected to vehicle wheels (100), and transmits power from one of the electric motor (12) or gas turbine assembly (28) to the wheels (100).

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1. A vehicle drive system (1) for driving a wheel (100) of a vehicle, the system (1) comprising: an electric drive portion (2) including as high-speed electric motor (12) including a shaft (14) for driving the wheel (100);a gas turbine drive portion (4) including a gas turbine assembly (28) comprising a turbine wheel (30) mounted on the shaft (14), a burner (70) for providing a stream of gas for driving the turbine wheel (30) and including an inlet for receiving compressed air, a compressor wheel (50) mounted on the shaft (14) and having an outlet for supplying compressed air to the burner (70), and a recuperator (80) disposed in the fluid path between the outlet of the compressor (50) and the inlet of the burner (70), the recuperator (80) configured to scavenge heat from the exhaust gas that is discharged from the turbine (30) to heat the compressed air being supplied to the burner (70), the gas turbine assembly (28) being directly coupled to the shaft (14) for driving the wheel (100) independent of the electric motor (12), wherein the gas turbine drive portion is operatively coupled in tandem with the electric drive portion (2) to assist the electric drive portion (2); anda gear train unit (90) operatively coupled between the shaft (14) and the wheel (100) of the vehicle for transmitting power from one of the electric motor (12) or gas turbine assembly (28) or both to the wheel (100); anda controller (66) connected to the electric motor (12) and the gas turbine assembly (28), the controller (66) configured to control the electric motor (12) and the gas turbine assembly (28) to provide power to the wheel (100) ina first mode, in which the electric motor (12) is operated during normal driving operation and the gas turbine assembly (28) is not operated;a second mode, in which higher power is required, and in which the electric motor (12) is operated to propel the vehicle and the gas turbine assembly (28) is operated to provide propulsion power in addition to that provided by the electric motor (12); anda third mode, in which the gas turbine assembly (28) propels the vehicle and the electric motor (12) does not contribute to vehicle propulsion but operates as a generator to charge a battery. 2. A vehicle drive system (1) for driving a wheel (100) of a vehicle, the system (1) comprising: a drive shaft (14);a high-speed electric motor (12) including a rotor (16) coupled to the drive shaft (14), anda stator (18) that receives the rotor (16);a gas turbine assembly (28) including a turbine (30) including a turbine wheel (34) mounted on the drive shaft (14),a burner (70) that burns fuel and provides exhaust gas to drive the turbine wheel (34), anda compressor (50) that provides compressed air to the burner (70), the compressor (50) including a compressor wheel (54) mounted on the drive shaft (14), whereby the gas turbine assembly (28) is coupled to the drive shaft (14) independent of the electric motor (12);a gear train unit (90) that has the drive shaft (14) as an input shaft, and includes an output shaft (94) connected to the wheel (100), the gear train unit (90) transmitting power from one of the electric motor (12) or gas turbine assembly (28) to the wheel (100); anda controller (66) connected to the electric motor (12) and the gas turbine assembly (28), the controller (66) configured to control the electric motor (12) and the gas turbine assembly (28) to provide power to the wheel (100) ina first mode, in which the electric motor (12) is operated during normal driving operation and the gas turbine assembly (28) is not operated;a second mode, in which higher power is required, and in which the electric motor (12) is operated to propel the vehicle and the gas turbine assembly (28) is operated to provide propulsion power in addition to that provided by the electric motor (12); anda third mode, in which the gas turbine assembly (28) propels the vehicle and the electric motor (12) does not contribute to vehicle propulsion but operates as a generator to charge a battery. 3. The vehicle drive system (1) of claim 2, wherein the high speed electric motor (12) is able to operate at speeds in a range of 50,000 rpm to 150,000 rpm. 4. The vehicle drive system (1) of claim 2, wherein the gas turbine assembly (28) further comprises a recuperator (80) disposed in the fluid path between an outlet of the compressor (50) and an inlet of the burner (70), the recuperator (80) configured to use the exhaust gas that is discharged from the turbine (30) to heat the compressed air. 5. The vehicle drive system (1) of claim 2, wherein the gear train unit (90) is configured to provide an output shaft (94) rotational speed that is less than that of the drive shaft (14). 6. The vehicle drive system (1) of claim 2, wherein the gear train unit (90) provides a rotational speed reduction between the drive shaft (14) and the output shaft (94) in a range of 30:1 to 100:1. 7. The vehicle drive system (1) of claim 2, wherein the gear train unit (90) is a fixed ratio speed transmission device. 8. The vehicle drive system (1) of claim 2, wherein the gear train unit (90) includes a planetary gear set. 9. The vehicle drive system (1) of claim 2, further comprising a battery (62) connected to the electric motor (12) via an inverter (65). 10. The vehicle drive system (1) of claim 2, further comprising a bi-directional controller (66) configured to permit conversion of direct current to alternating current and conversion of alternating current to direct current via an inverter (65). 11. The vehicle drive system (1) of claim 2, wherein when the vehicle drive system (1) is operated in the third mode, the electric motor (12) operates as a generator and supplies power to a battery (62). 12. The vehicle drive system (1) of claim 2, wherein the rotor (16) is disposed on the drive shaft (14) between the turbine wheel (34) and the compressor wheel (54). 13. The vehicle drive system (1) of claim 2, wherein the compressor wheel (54) is disposed on the drive shaft (14) between the turbine wheel (34) and the rotor (16). 14. The vehicle drive system (1) of claim 2, wherein during operation of the gas turbine assembly (28), the gas turbine assembly (28) undergoes open Brayton thermodynamic cycles in which the expansion of heated gas from the burner (70) within the turbine (30) results in rotation of the drive shaft (14), which in turn results in rotation of the wheel (100).

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High speed traction motor for a vehicle also having an auxiliary open Brayton cycle power assist and range extender

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High speed traction motor for a vehicle also having an auxiliary open Brayton cycle power assist and range extender

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이 특허에 인용된 특허 (12)

IPC 상위 출원인

상세정보조회

원문조회

IPC 상세정보(version : 201201)

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