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US 2024/0204589 A1Published application
Electric motor
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsJin ITO, Yasuhiro YAMATO
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Abstract
A first coil end accommodation channel includes a stator cooling channel defined inside an inner surface of a first housing cover portion. A housing cooling channel includes a channel formed in a housing cylindrical portion and a channel formed in the first housing cover portion. This structure serves to efficiently cool coolant flowing through a coil end.
Claims11
An electric motor comprising:
- a motor body including a rotor that is rotatable around an axis and a stator that is opposed to the rotor in a radial direction, the stator including a coil, the coil including a first coil end in an axial direction;
- a housing that houses the motor body;
- a stator cooling channel that is defined inside an inner surface of the housing and is configured to be filled with coolant, the stator cooling channel including a first coil end accommodation channel that accommodates the first coil end;
- and
- a housing cooling channel that includes a channel formed between the inner surface and an outer surface of the housing and is configured to be filled with coolant, wherein
- the housing includes a housing cylindrical portion positioned outward of the motor body in a radial direction and a first housing cover portion disposed on one side in the axial direction with respect to the motor body,
- the first coil end accommodation channel is defined inside an inner surface of the first housing cover portion, and
- the housing cooling channel includes a channel formed in the housing cylindrical portion and a channel formed in the first housing cover portion.
5 more elements
Dependencies are inferred from the claim text.