US-20260124669-A1 - TEMPERATURE ADJUSTMENT UNIT AND MANUFACTURING METHOD OF TEMPERATURE ADJUSTMENT UNIT

Abstract

In a temperature adjustment unit, a first metal plate member and a second metal plate member are provided with a groove portion serving as a flow path of a fluid, the first and the second metal plate members being superposed and joined to each other. The temperature adjustment unit includes: a chemical bonding section in which a planar portion of the first metal plate member and a planar portion of the second metal plate member are bonded by chemical bonding, the planar portions facing each other; a mechanical joint section provided in the chemical bonding section and joined by mechanical joining; and a joint planar section provided around the mechanical joint section. The joint planar section projects with respect to the groove portion in a direction transverse to the flow path and is alternately provided on opposite sides of the flow path along a flow direction of the fluid.

Inventors

• Sho KOBAYASHI
• Daichi Tajima
• Kohei Takahashi
• Yoshiyuki Hayashi
• Yutaroh Gotoh

Assignees

• TOYOTA JIDOSHA KABUSHIKI KAISHA

Dates

Publication Date

20260507

Application Date

20250813

Priority Date

20241101

Claims (4)

1. 1 . A temperature adjustment unit in which at least one of a first metal plate member and a second metal plate member is provided with a groove portion serving as a flow path of a fluid, the first metal plate member and the second metal plate member being superposed and joined to each other, the temperature adjustment unit comprising: a chemical bonding section where a planar portion of the first metal plate member and a planar portion of the second metal plate member are bonded by chemical bonding, the planar portions facing each other; a mechanical joint section provided in the chemical bonding section and joined by mechanical joining; and a joint planar section provided around the mechanical joint section, wherein the joint planar section projects with respect to the groove portion in a direction transverse to the flow path and is alternately provided on opposite sides of the flow path along a flow direction of the fluid.
2. 2 . The temperature adjustment unit according to claim 1 , wherein: the groove portion is provided to meander; and the mechanical joint section is provided between the flow paths adjacent each other.
3. 3 . The temperature adjustment unit according to claim 1 , wherein the mechanical joint section is joined by clinching.
4. 4 . A manufacturing method of the temperature adjustment unit according to claim 1 , the manufacturing method comprising: performing surface modification on the planar portion of the first metal plate member and on the planar portion of the second metal plate member, the planar portions facing each other; applying an adhesive to at least one of the planar portion of the first metal plate member and the planar portion of the second metal plate member, the planar portions facing each other; superposing the planar portion of the first metal plate member and the planar portion of the second metal plate member, the planar portions facing each other; and joining the planar portion of the first metal plate member and the planar portion of the second metal plate member that are superposed, by clinching, the planar portions facing each other.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to Japanese Patent Application No. 2024-192819 filed on Nov. 1, 2024. The disclosure of the above-identified application, including the specification, drawings, and claims, is incorporated by reference herein in its entirety. BACKGROUND 1. Technical Field The present disclosure relates to a temperature adjustment unit and a manufacturing method of a temperature adjustment unit. 2. Description of Related Art Japanese Unexamined Patent Application Publication No. 2024-61456 (JP 2024-61456 A) discloses a temperature adjustment unit. In the temperature adjustment unit, an adhesive is applied around a groove serving as a flow path of a fluid, the groove being provided in at least one of a first metal plate member and a second metal plate member, the two metal plate members are superposed, and then a mechanical joint section is provided at a portion to which the adhesive is applied. SUMMARY In JP 2024-61456 A, in order to perform mechanical joining on the two superposed metal plate members, a joint planar section having a circular shape that has a diameter that is predetermined needs to be provided. In a case where a width of the flow path is widened in order to increase heat exchange efficiency of the temperature adjustment unit, the joint planar section may protrude into the flow path. In a case where the joint planar section protrudes into the flow path, a flow of the fluid is hindered, and thus heat exchange efficiency that is needed cannot be achieved. The present disclosure has been made in order to solve such problems, and an object of the present disclosure is to provide a temperature adjustment unit and a manufacturing method of a temperature adjustment unit, in which even in a case where a joint planar section for performing mechanical joining protrudes into a flow path, heat exchange efficiency that is needed can be obtained without hindering a flow of a fluid. The present disclosure is a temperature adjustment unit in which at least one of a first metal plate member and a second metal plate member is provided with a groove portion serving as a flow path of a fluid, the first metal plate member and the second metal plate member being superposed and joined to each other, the temperature adjustment unit including: a chemical bonding section where a planar portion of the first metal plate member and a planar portion of the second metal plate member are bonded by chemical bonding, the planar portions facing each other;a mechanical joint section provided in the chemical bonding section and joined by mechanical joining; anda joint planar section provided around the mechanical joint section,in which the joint planar section projects with respect to the groove portion in a direction transverse to the flow path and is alternately provided on opposite sides of the flow path along a flow direction of the fluid. With such a configuration, heat exchange efficiency that is needed can be obtained without hindering a flow of a fluid. The groove portion is provided to meander and the mechanical joint section is provided between the adjacent flow paths. With such a configuration, heat exchange efficiency that is needed can be obtained without hindering a flow of a fluid. The mechanical joint section is joined by clinching. With such a configuration, heat exchange efficiency that is needed can be obtained without hindering a flow of a fluid. A manufacturing method of the temperature adjustment unit according to the present disclosure, the manufacturing method includes: performing surface modification on the planar portion of the first metal plate member and on the planar portion of the second metal plate member, the planar portions facing each other;applying an adhesive to at least one of the planar portion of the first metal plate member and the planar portion of the second metal plate member, the planar portions facing each other;superposing the planar portion of the first metal plate member and the planar portion of the second metal plate member, the planar portions facing each other; andjoining the planar portion of the first metal plate member and the planar portion of the second metal plate member that are superposed, by clinching, the planar portions facing each other. With such a configuration, the adhesive can be retained in the mechanical joint section during mechanical joining, and a bonding strength between the first metal plate member and the second metal plate member is increased. According to the present disclosure, it is possible to provide a temperature adjustment unit and a manufacturing method of a temperature adjustment unit, in which even in a case where a joint planar section for performing mechanical joining protrudes into a flow path, heat exchange efficiency that is needed can be obtained without hindering a flow of a fluid. BRIEF DESCRIPTION OF THE DRAWINGS Features, advantages, and technical and industrial significance of e