US 12,323,013 B2
Motor control device
Yuto Sato, Okazaki (JP)
Assigned to JTEKT CORPORATION, Kariya (JP)
Appl. No. 18/269,995
Filed by JTEKT CORPORATION, Kariya (JP)
PCT Filed Feb. 19, 2021, PCT No. PCT/JP2021/006416
§ 371(c)(1), (2) Date Jun. 28, 2023,
PCT Pub. No. WO2022/176166, PCT Pub. Date Aug. 25, 2022.
Prior Publication US 2024/0072617 A1, Feb. 29, 2024
Int. Cl. H02K 11/33 (2016.01)
CPC H02K 11/33 (2016.01) [H02K 2203/03 (2013.01); H02K 2211/03 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A motor control device configured to control a motor including winding groups of two systems, the motor control device comprising:
a board provided side by side with the motor in an axial direction of the motor; and
a sensor provided on the board and configured to generate an electric signal based on rotation of the motor, wherein
the board includes a first area and a second area defined across a boundary line that passes through a center of the motor and is orthogonal to an axis of the motor when viewed in the axial direction of the motor,
each of the first area and the second area includes:
a power circuit area for converting electric power supplied from an external power supply into electric power to be supplied to the winding group of a corresponding system out of the two systems;
a control circuit area for controlling power supply to the winding group of the corresponding system out of the two systems based on the electric signal generated by the sensor;
a signal path through which the electric signal is transmitted to the control circuit area; and
a power path through which the electric power supplied from the power supply is transmitted to the power circuit area,
in each of the first area and the second area, the signal path is provided not to cross the power path and the power circuit area when viewed in the axial direction of the motor,
the board includes, in an end area in a direction along the boundary line, a power terminal connection portion to which the electric power is supplied from the power supply,
in each of the first area and the second area, the control circuit area includes a body portion arranged along the boundary line together with the power circuit area and positioned farther from the power terminal connection portion than the power circuit area,
the board includes, in the end area, a signal terminal connection portion for exchanging an electric signal between the control circuit area of each of the first area and the second area and an external device,
the power terminal connection portion is adjacent to the power circuit area of the first area in the direction along the boundary line,
the signal terminal connection portion is adjacent to the power circuit area of the second area in the direction along the boundary line,
the power path through which the electric power is transmitted from the power terminal connection portion to the power circuit area of the first area is provided along the boundary line, and
the power path through which the electric power is transmitted from the power terminal connection portion to the power circuit area of the second area is provided to detour along an outer side of the signal terminal connection portion.