US Patent No. 10,798,855

POWER CONVERSION DEVICE


Patent No. 10,798,855
Issue Date October 06, 2020
Title Power Conversion Device
Inventorship Takahiro Uneme, Wako (JP)
Assignee HONDA MOTOR CO., LTD., Tokyo (JP)

Claim of US Patent No. 10,798,855

1. A power conversion device comprising:two heat dissipation portions each having a refrigerant flow channel through which a refrigerant circulates and a mounting surface;
a plurality of element arrays each including a high side arm element and a low side arm element and provided between the two heat dissipation portions which are disposed opposite to each other;
a plurality of first element arrays in which the plurality of element arrays delivering power to and/or from a first motor capable of a power-running operation using power supplied from a power storage device are disposed side by side in a first direction on the mounting surface according to a plurality of phases of the first motor; and
a plurality of second element arrays in which the plurality of element arrays delivering power to and/or from a second motor capable of generating power for running of the first motor are disposed side by side in the first direction on the mounting surface according to a plurality of phases of the second motor,
wherein the plurality of first element arrays and the plurality of second element arrays are disposed at positions facing each other in a second direction intersecting the first direction,
wherein the refrigerant flow channel includes
a refrigerant supply port passing through in a third direction orthogonal to the first direction and the second direction,
a first flow channel extending in the first direction from the refrigerant supply port, and
a plurality of first branching flow channels that branch from the first flow channel so as to correspond to each phase of the plurality of first element arrays and the plurality of second element arrays, and extend in the second direction at positions overlapping the first element arrays and the second element arrays in a plan view seen from the third direction,
wherein, in each of the first branching flow channels, the plurality of first element arrays are located on an upstream side of the first branching flow channel in the second direction with respect to the plurality of second element arrays, and
wherein the refrigerant supply port provided in one of the two heat dissipation portions and the refrigerant supply port provided in the other of the two heat dissipation portions are connected at a position overlapping each other in the third direction.