Title:
ELECTRIC DRIVE APPARATUS, ELECTRIC POWER STEERING APPARATUS, AND ELECTRONIC CONTROL DEVICE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/172974
Kind Code:
A1
Abstract:
Provided are an electric drive apparatus and an electric power steering apparatus that enhance heat dissipation of a first circuit board and a second circuit board while ensuring transmission of control signals. The electric drive apparatus comprises a motor and an electronic control device that controls rotation of the motor. The electronic control device includes: a first circuit board; a second circuit board having a control circuit for controlling current to be supplied to a transistor of the first circuit board; a second housing that houses the second circuit board and that has a first through-hole penetrating same in the axial direction; a lid for covering the second housing; and an inter-substrate connector. The inter-substrate connector connects the second circuit board disposed on an opposite-load side of the second housing and a first circuit board disposed on a load side of the second housing to each other, and is disposed in the first through-hole.
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Inventors:
MORIMOTO MASAKAZU (JP)
Application Number:
PCT/JP2022/005263
Publication Date:
August 18, 2022
Filing Date:
February 10, 2022
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
H02K11/33; B62D5/04; H02K5/18; H02K11/215
Domestic Patent References:
WO2020130107A1 | 2020-06-25 |
Foreign References:
JP2017159771A | 2017-09-14 | |||
JP2020127334A | 2020-08-20 | |||
US20190131847A1 | 2019-05-02 | |||
JP2019088162A | 2019-06-06 | |||
JP2019068542A | 2019-04-25 | |||
JP2017189034A | 2017-10-12 | |||
JP2018207640A | 2018-12-27 |
Other References:
See also references of EP 4096073A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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