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US 5,345,777 AGranted
Electric automobile
AssigneeSeiko Epson Corporation
InventorsHirokazu Sekino, Issei Yamakoshi
Life of this patent
Estimating the term…
Abstract
An electric automobile comprises a wheel driving motor (8, 10, 15, 21, 50, 80) and a refrigerating system for air-conditioning the interior of an electric automobile. The refrigerating system has a compressor (7, 22, 57), an outdoor heat exchanger (6, 25, 53), an expansion valve (3a, 3b, 13, 27, 28, 55, 58), and an indoor heat exchanger (4, 29, 54) connected in series by a refrigerant pipe. The wheel driving motor (8, 10, 15, 21, 50, 80) is provided within the refrigerating system, and the wheel driving motor is cooled directly by the refrigerating system.
Claims24
An electric automobile comprising:
- a wheel driving motor for driving a driving wheel of an electric automobile;
- and
- a refrigerating system in which a refrigerant flows, and which comprises a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger connected one after another by refrigerant pipes. pipes,
- the wheel driving motor being provided within the refrigerating system, whereby the wheel driving motor is cooled directly by the refrigerant,
- wherein the wheel driving motor comprises a sealing shell, a stator within the sealing shell, and a rotor provided inside the stator and having a driving shaft,
- the sealing shell having an inlet pipe connected thereto for supplying the refrigerant into the interior of the sealing shell, and an outlet pipe connected thereto for discharging the refrigerant out of the interior of the sealing shell, a flange within said sealing shell having an interior in which said stator is securely supported and shad rotor is rotatably supported,
- said refrigerant flowing into the interior of said flange via said inlet pipe to directly contact said stator and said rotor and flowing out of the interior of said flange via said outlet pipe after cooling the stator and rotor,
- said shell having opposite sides and ends, said inlet pipe and outlet pipe being located at respective opposite sides and ends of the shell to be in diagonally opposed relation.
5 more elements
An electric automobile comprising:
- a wheel driving motor for driving a driving wheel of an electric automobile;
- and
- a refrigerating system in which a refrigerant flows, and which comprises a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger connected one after another by refrigerant pipes,
- the wheel driving motor being provided within the refrigerating system, whereby the wheel driving motor is cooled directly by the refrigerant,
- wherein the wheel driving motor comprises a sealing shell, a stator within the sealing shell, and a rotor provided inside the stator and having a driving shaft,
- the sealing shell having an inlet pipe connected thereto for supplying the refrigerant into the interior of the sealing shell, and an outlet pipe connected thereto for discharging the refrigerant out of the interior of the sealing shell, a flange within said sealing shell having an interior in which said stator is securely supported and said rotor is rotatably supported,
- said refrigerant flowing into the interior of said flange via said inlet pipe to directly contact said stator and said rotor and flowing out of the interior of said flange via said outlet pipe after cooling the stator and rotor.
4 more elements
An electric automobile comprising:
- a wheel driving motor for driving a driving wheel of an electric automobile;
- and
- a refrigerating system in which a refrigerant flows, and which comprises a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger connected one after another by refrigerant pipes,
- the wheel driving motor being provided within the refrigerating system, whereby the wheel driving motor is cooled directly by the refrigerant,
- wherein the wheel driving motor comprises a sealing shell, a stator within the sealing shell, and a rotor provided inside the stator and having a driving shaft,
- the sealing shell having an inlet pipe connected thereto for supplying the refrigerant into the interior of the sealing shell, and an outlet pipe connected thereto for discharging the refrigerant out of the interior of the sealing shell, a flange within the sealing shell having an interior in which the stator is securely supported and the rotor is rotatably supported,
- the refrigerant flowing into the interior of the flange via the inlet pipe to directly contact the stator and the rotor and flowing out of the interior of the flange via the outlet pipe after cooling the stator and rotor,
- the refrigerating system further including a change-over valve whereby the refrigerant flow is made reversible.
5 more elements
Dependencies are inferred from the claim text.