公开(公告)号：US20190199268A1

公开(公告)日：2019-06-27

申请号：US16232090

申请日：2018-12-26

Applicant: NIDEC TOSOK CORPORATION

Inventor： Tadayuki HATSUDA ,  Yoshihisa OKUHATA

IPC: H02P29/64 ,  H02P27/08

CPC classification number: H02P29/64 ,  H02P27/08 ,  H02P2201/11

Abstract: A motor control device includes a temperature input unit that inputs a temperature of a motor and a control unit that performs control such that the control unit drives the motor by constant current/variable voltage control by lowering a power source voltage in a case in which the input temperature of the motor is equal to or less than a first threshold value and drives the motor by constant voltage/variable current control at a predetermined power source voltage in a case in which the temperature of the motor exceeds the first threshold value.

公开(公告)号：US20220243799A1

公开(公告)日：2022-08-04

申请号：US17724498

申请日：2022-04-20

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA

IPC: F16H57/023 ,  F16H63/34

Abstract: A gearbox and a motor driver having the gearbox are provided. The gearbox includes: a first gear, configured to be rotatable around a first gear shaft parallel to a first direction; a second gear, configured to be rotatable around a second gear shaft parallel to the first gear shaft, and the second gear engages with the first gear, and an outer diameter of the second gear is larger than an outer diameter of the first gear; a parking gear portion, configured to be rotatable around the second gear shaft; a rotation prevention member, configured to be movable between a position where the rotation prevention member is interposed between teeth of the parking gear portion and a position where the rotation prevention member is not interposed between the teeth of the parking gear portion; and a transmission mechanism, configured to transmit a driving force to the rotation prevention member.

公开(公告)号：US20190296612A1

公开(公告)日：2019-09-26

申请号：US16357344

申请日：2019-03-19

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA

IPC: H02K9/19 ,  H02K13/00 ,  H02K5/12 ,  H02M7/44

Abstract: A motor includes a rotor that has a motor shaft disposed along a central axis extending in an axial direction; a stator facing the rotor with a gap interposed therebetween in a radial direction; a motor driving inverter unit supplying electric power from a battery to the stator; a charger having a charger inverter unit that charges the battery; and a housing accommodating the stator, the motor driving inverter unit and the charger The housing has a cooling flow path through which a coolant flows, a stator accommodation unit accommodating the stator, an inverter accommodation unit positioned outside the stator accommodation unit in the radial direction, a charger accommodation unit positioned outside the stator accommodation unit in the radial direction, and an intermediate partitioning wall partitioning the inverter accommodation unit and the charger accommodation unit The cooling flow path is disposed in the intermediate partitioning wall.

公开(公告)号：US20190296605A1

公开(公告)日：2019-09-26

申请号：US16355871

申请日：2019-03-18

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA

IPC: H02K5/20 ,  H02K7/00 ,  H02K11/33 ,  H02K11/00 ,  B60K1/00 ,  B60K1/04

Abstract: A motor is provided. A plurality of heat generation elements are fixed to a housing in parallel to a specific direction, the housing has a cooling flow path through which a coolant flows and a plurality of fixing units fixing the plurality of heat generation elements to the housing, the plurality of heat generation elements has a first and a second heat generation elements, the plurality of fixing units have a first and a second fixing units that are respectively disposed at an end and the other end of the first heat generation element, a third and a fourth securing units that are respectively disposed at an end and the other end of the second heat generation element. The second fixing unit is adjacent to the third fixing unit. The cooling flow path is disposed at a location other than a location between the second and the third fixing units.

公开(公告)号：US20190199160A1

公开(公告)日：2019-06-27

申请号：US16232087

申请日：2018-12-26

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA ,  Tadayuki HATSUDA

IPC: H02K5/20 ,  H02K11/33 ,  H02K11/00 ,  H02P6/10 ,  H02K9/00

CPC classification number: H02K5/20 ,  H02K9/005 ,  H02K11/0094 ,  H02K11/33 ,  H02P6/10 ,  H02P6/16 ,  H02P29/64 ,  H02P29/68

Abstract: A motor includes: a housing that accommodates a stator that has a field coil and a rotor; an inverter that is provided in the housing; a voltage boosting circuit that has a reactor provided in the housing; and a coolant flow path that is provided at a position at which the coolant flow path overlaps with the inverter and the voltage boosting circuit in the housing in a diameter direction, and the inverter has a control board that controls a drive current or a drive voltage and a drive element that is provided on the side of the housing with respect to the control board and supplies power to the field coil in accordance with control from the control board.

公开(公告)号：US20190297751A1

公开(公告)日：2019-09-26

申请号：US16355872

申请日：2019-03-18

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA

IPC: H05K7/20 ,  H02M3/158 ,  H02K11/33

Abstract: A motor includes a rotor having a motor shaft along a central axis extending in an axial direction; a stator facing the rotor with a gap interposed therebetween in a radial direction; a motor driving inverter unit supplying electric power from a battery to the stator; a charger having a charger inverter unit for charging the battery; and a housing accommodating the stator, the motor driving inverter unit and the charger. The housing has a cooling flow path through which a coolant flows, an inlet port into which the coolant flowing in the cooling flow path flows, and an outlet port from which the coolant flowing in the cooling flow path flows. The motor driving and the charger inverter units are in the housing along the cooling flow path. The motor driving inverter unit is closer to the inlet port side a position where the charger inverter unit is disposed.

公开(公告)号：US20190199250A1

公开(公告)日：2019-06-27

申请号：US16232089

申请日：2018-12-26

Applicant: NIDEC TOSOK CORPORATION

Inventor： Tadayuki HATSUDA ,  Yoshihisa OKUHATA

IPC: H02P6/10 ,  H02M7/5387 ,  H02M3/158 ,  H02K11/33 ,  H02K11/00

CPC classification number: H02P6/10 ,  H02K11/0094 ,  H02K11/33 ,  H02M3/158 ,  H02M7/53871 ,  H02P6/16 ,  H02P2201/09

Abstract: A motor control device includes: a voltage boosting circuit that boosts a power source voltage supplied from an outside; a condenser that smooths a voltage output by the voltage boosting circuit; an inverter circuit that generates a drive voltage of a motor by switching a voltage output by the voltage boosting circuit and smoothed by the condenser; and a control part that causes the voltage boosting circuit to bypass and causes the power source voltage to be supplied to the inverter circuit, and a distance between the voltage boosting circuit and the inverter circuit is a distance with which a parasitic inductance is equal to or less than a predetermined value.

公开(公告)号：US20190297753A1

公开(公告)日：2019-09-26

申请号：US16360044

申请日：2019-03-21

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA

IPC: H05K7/20 ,  H02M7/537 ,  B60L53/22

Abstract: There is provided an inverter device having a feature related to disposition of components. The inverter device includes a first inverter unit, a second inverter unit, and a housing in which the first inverter unit and the second inverter unit are housed. The first inverter unit includes a first heating element, the second inverter unit includes a second heating element, the housing has a partition wall having a cooling flow path through which a refrigerant flows, the first heating element is fixed to a first surface of the partition wall, and the second heating element is fixed to a second surface which is a reverse surface with respect to the first surface of the partition wall.

公开(公告)号：US20190297752A1

公开(公告)日：2019-09-26

申请号：US16360042

申请日：2019-03-21

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA

IPC: H05K7/20

Abstract: There is provided an inverter device having features regarding the disposition of components. The inverter device includes an inverter unit and a housing in which the inverter unit is housed. The inverter unit includes a heating element, the housing has a partition wall having a cooling flow path through which a refrigerant flows and a plurality of fixing parts for fixing the heating element to the partition wall, the plurality of fixing parts include a first fixing part disposed at one side of the heating element and a second fixing part disposed at the other side of the heating element, and the cooling flow path is positioned between the first fixing part and the second fixing part.

公开(公告)号：US20190296615A1

公开(公告)日：2019-09-26

申请号：US16360043

申请日：2019-03-21

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshihisa OKUHATA

IPC: H02K9/193 ,  B60L50/60 ,  H02K7/00 ,  H02K11/00 ,  H02K11/33

Abstract: There is provided an inverter device having features regarding the disposition of components. The inverter device includes an inverter unit and a housing in which the inverter unit is housed. The inverter unit includes a heating element, the housing has a partition wall having a cooling flow path through which a refrigerant flows and fixing parts for fixing the heating element to the partition wall, and a cooling surface which is an end surface of the heating element forms a flow path wall of the cooling flow path.