US 2019/0104621 A1Published application

Circuit board and control device

AssigneeNidec Elesys Corporation

InventorsKazuki HARADA, Naoki YAMAMOTO

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Abstract

A circuit board includes a board, circuitry provided on the board that supplies electric power to a motor, a positive-electrode-side power source terminal portion connected to a positive electrode terminal of the circuitry, and a negative-electrode-side power source terminal portion connected to a negative electrode terminal of the circuitry. The circuitry includes a first capacitor connected to the positive-electrode-side power source terminal portion, and a second capacitor connected to the negative-electrode-side power source terminal portion. The first and second capacitors are connected in series between the positive-electrode-side and the negative-electrode-side power source terminal portions. The board includes a through hole, at least a portion of which is between at least two of the first capacitor, the second capacitor, the positive-electrode-side power source terminal portion, and the negative-electrode-side power source terminal portion.

Claims20

Dependent claims

A circuit board, comprising:

a board main body;
circuitry provided on the board main body that supplies electric power to a motor;
a positive-electrode-side power source terminal portion provided on the board main body and connected to a positive electrode terminal of the circuitry;
and
a negative-electrode-side power source terminal portion provided on the board main body and connected to a negative electrode terminal of the circuitry;
wherein
the circuitry includes:
a first capacitor connected to the positive-electrode-side power source terminal portion;
and
a second capacitor connected to the negative-electrode-side power source terminal portion;
wherein
the first capacitor and the second capacitor are connected in series between the positive-electrode-side power source terminal portion and the negative-electrode-side power source terminal portion;
the board main body includes a through hole penetrating through the board main body in a thickness direction;
and
at least a portion of the through hole is provided in a position between at least two of the first capacitor, the second capacitor, the positive-electrode-side power source terminal portion, and the negative-electrode-side power source terminal portion.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/145,473Filed 28 Sep 2018
Priority: JP 2017-19116629 Sep 2017
Published: 4 Apr 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

B62D 5/0406
Characterised by constructional features, e.g. common housing for motor and gear box: including housing for electronic control unit
H02K 11/33
Structural association with control circuits or drive circuits: drive circuits, e.g. power electronics
H02P 27/08
Using DC to AC converters or inverters: with pulse width modulation
H05K 1/111
Printed elements for providing electric connections to or between printed circuits: pads for surface mounting, e.g. lay-out