Mechanically and electrically integrated driving apparatus and manufacturing method therefor
First Claim
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1. A mechanically and electrically integrated driving apparatus comprising:
- a cylindrical frame unit;
a motor unit that comprises;
a stator core;
a plurality of windings that are mounted to the stator core; and
a rotor unit that is inserted into the stator core,the motor unit being housed in the frame unit; and
an inverter unit that comprises;
power modules that supply electric power to the motor unit; and
a power module driving circuit board that drives the power modules, the inverter unit being housed in the frame unit,wherein;
a common coolant flow channel for cooling the motor unit and the inverter unit is disposed inside a wall portion of the frame unit;
the power modules are placed in close contact with an inner wall surface of the frame unit;
a bracket that is separate from the frame unit is fitted into the frame unit;
a space inside the frame unit is divided by the bracket into;
a space in which the motor unit is housed; and
a space in which the inverter unit is housed;
a connector for connecting the power modules and the windings is disposed on an end portion of the bracket that is near the inverter unit;
the connector includes a plurality of connecting conductors to which the leader lines from the windings are connected;
connecting terminals that rise up at positions at which the power modules are disposed are disposed on each of the connecting conductors;
a bearing that rotatably holds a shaft of the rotor unit is held on the bracket;
the bracket comprises;
a discoid outer bracket; and
an inner bracket;
a recess portion is disposed on an end portion of the outer bracket that faces the inverter unit;
the inner bracket is fitted into the recess portion;
the bearing is held on the inner bracket; and
the connector is disposed on the end portion of the outer bracket on which the recess portion is disposed.
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Abstract
In a mechanically and electrically integrated driving apparatus, a common coolant flow channel for cooling a motor unit and an inverter unit is disposed inside a wall portion of a frame unit. Power modules are placed in close contact with an inner wall surface of the frame unit. A bracket that is separate from the frame unit is fitted into the frame unit. A space inside the frame unit is divided by the bracket into: a space in which the motor unit is housed; and a space in which the inverter unit is housed.
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Citations
16 Claims
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1. A mechanically and electrically integrated driving apparatus comprising:
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a cylindrical frame unit; a motor unit that comprises; a stator core; a plurality of windings that are mounted to the stator core; and a rotor unit that is inserted into the stator core, the motor unit being housed in the frame unit; and an inverter unit that comprises; power modules that supply electric power to the motor unit; and a power module driving circuit board that drives the power modules, the inverter unit being housed in the frame unit, wherein; a common coolant flow channel for cooling the motor unit and the inverter unit is disposed inside a wall portion of the frame unit; the power modules are placed in close contact with an inner wall surface of the frame unit; a bracket that is separate from the frame unit is fitted into the frame unit; a space inside the frame unit is divided by the bracket into; a space in which the motor unit is housed; and a space in which the inverter unit is housed; a connector for connecting the power modules and the windings is disposed on an end portion of the bracket that is near the inverter unit; the connector includes a plurality of connecting conductors to which the leader lines from the windings are connected; connecting terminals that rise up at positions at which the power modules are disposed are disposed on each of the connecting conductors; a bearing that rotatably holds a shaft of the rotor unit is held on the bracket; the bracket comprises; a discoid outer bracket; and an inner bracket; a recess portion is disposed on an end portion of the outer bracket that faces the inverter unit; the inner bracket is fitted into the recess portion; the bearing is held on the inner bracket; and the connector is disposed on the end portion of the outer bracket on which the recess portion is disposed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A manufacturing method for a mechanically and electrically integrated driving apparatus, the manufacturing method comprising steps of:
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placing a bracket over an end portion of a stator core to which a plurality of windings have been mounted, the bracket having a first end portion and a second end portion, the second end portion being closer to the stator core than the first end portion is to the stator core; integrating the stator core, the windings, and the bracket by molding; fixing a connecting base that is made of an electrically insulating material on which a plurality of grooves have been formed to the first end portion of the bracket on an opposite side from the stator core; inserting connecting conductors into the grooves of the connecting base; fixing an assemblage that includes the stator core, the windings, and the bracket by press-fitting or shrinkage-fitting inside a cylindrical frame unit in which a coolant flow channel is disposed inside a wall portion; inserting a rotor unit inside the stator core and rotatably holding a shaft of the rotor unit by a bearing; and fixing power modules to the frame unit such that radiating surfaces thereof are placed in close contact with an inner wall surface of the frame unit.
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Specification