Cooler, housing, and rotating electric machine

Inventors: Yuji Ono (Wako, JP); Keiji Tada (Wako, JP); Hiroshi Nagami (Wako, JP); Masaki Sato (Wako, JP); Yoshiyuki Hoshi (Wako, JP)

Assignee: HONDA MOTOR CO., LTD.

H02K5/18

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Quick Facts

Patent No.: US 12683453
App. No.: 18/784,349
Granted: Jul 14, 2026
Kind: B2

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Abstract

A cooler includes a base material, and a plurality of ribs protruding from a main surface of the base material, a distance between an upstream side end portion of a first rib and an upstream side end portion of a second rib in a second direction is larger than a distance between a downstream side end portion of the first rib and a downstream side end portion of the second rib in the second direction, and a distance between the upstream side end portion of the second rib and an upstream side end portion of a third rib in the second direction is smaller than a distance between the downstream side end portion of the second rib and a downstream side end portion of the third rib in the second direction.

Claims (20)

1 . A cooler comprising:

a base material; and

a plurality of ribs protruding from a main surface of the base material,

wherein a first end portion of the base material is located at an inflow end into which a coolant flows,

a second end portion of the base material is located at an outflow end from which the coolant flows out,

the plurality of ribs include a first rib group including a plurality of the ribs arranged in a second direction that intersects a first direction which is a direction from the first end portion of the base material toward the second end portion of the base material,

the first rib group includes a first rib among the plurality of ribs, a second rib among the plurality of ribs, and a third rib among the plurality of ribs,

the second rib is located between the first rib and the third rib,

a distance between an upstream side end portion of the first rib and an upstream side end portion of the second rib in the second direction is larger than a distance between a downstream side end portion of the first rib and a downstream side end portion of the second rib in the second direction, and

a distance between the upstream side end portion of the second rib and an upstream side end portion of the third rib in the second direction is smaller than a distance between the downstream side end portion of the second rib and a downstream side end portion of the third rib in the second direction.

2 . The cooler according to claim 1 , wherein

the plurality of ribs further include a second rib group located in the first direction with respect to the first rib group,

the second rib group includes a fourth rib among the plurality of ribs, and a fifth rib among the plurality of ribs,

at least a portion of the fourth rib is located in a first extension space obtained by virtually extending a first partial passage defined by the first rib and the second rib,

at least a portion of the fifth rib is located in a second extension space obtained by virtually extending a second partial passage defined by the second rib and the third rib, and

a distance between an upstream side end portion of the fourth rib and an upstream side end portion of the fifth rib in the second direction is different from a distance between a downstream side end portion of the fourth rib and a downstream side end portion of the fifth rib in the second direction.

3 . The cooler according to claim 1 , wherein

each of the ribs is inclined at 3 to 45 degrees with respect to the first direction.

4 . A housing comprising the cooler according to claim 1 .

5 . A rotating electric machine comprising the housing according to claim 4 .