US-20260128559-A1 - ELECTRICAL CONNECTION UNIT

US20260128559A1US 20260128559 A1US20260128559 A1US 20260128559A1US-20260128559-A1

Abstract

An electrical connection unit includes an electronic component, a first bus bar, a base member, a rigid member, and a first heat transfer member. The first bus bar is electrically connected to a first terminal of the electronic component. The base member supports the first bus bar. The rigid member faces the base member. The first heat transfer member is disposed between the rigid member and the first bus bar and has elasticity. The rigid member includes a first fixing portion to which the base member is fixed and a second fixing portion to which the electronic component is fixed. When viewed from a first direction from the base member toward the rigid member, a part of the first heat transfer member is located on a straight line connecting the first fixing portion and the second fixing portion.

Inventors

Ryu Senoo
Hirotaka Mukasa
Kazuhiko Tsuchiya

Assignees

YAZAKI CORPORATION

Dates

Publication Date: 20260507
Application Date: 20250929
Priority Date: 20241001

Claims (5)

1 . An electrical connection unit comprising: an electronic component; a first bus bar that is electrically connected to a first terminal of the electronic component; a base member that supports the first bus bar; a rigid member that faces the base member; and a first heat transfer member that is disposed between the rigid member and the first bus bar and has elasticity, wherein the rigid member includes a first fixing portion to which the base member is fixed and a second fixing portion to which the electronic component is fixed, and when viewed from a first direction from the base member toward the rigid member, a part of the first heat transfer member is located on a straight line connecting the first fixing portion and the second fixing portion.
2 . The electrical connection unit according to claim 1 , wherein the electronic component is disposed on a side opposite to the rigid member with respect to the base member, the base member has a through-hole penetrating the base member in a first direction, and the second fixing portion passes through the through-hole and faces the electronic component.
3 . The electrical connection unit according to claim 1 , further comprising a connection component that electrically connects the first terminal of the electronic component to the first bus bar, wherein the first bus bar includes a connection portion that is in contact with the connection component in the first direction, the first heat transfer member has a first portion overlapping the connecting portion when viewed from the first direction, and a part of the first portion of the first heat transfer member is located on a straight line connecting the first fixing portion and the second fixing portion when viewed from the first direction.
4 . The electrical connection unit according to claim 1 , further comprising: a second bus bar electrically connected to a second terminal of the electronic component and supported by the base member; and a second heat transfer member that is disposed between the rigid member and the second bus bar and has elasticity, wherein a part of each of the first heat transfer member and the second heat transfer member is located on a straight line connecting the first fixing portion and the second fixing portion when viewed from the first direction.
5 . The electrical connection unit according to claim 1 , wherein at least a surface of the base member has a color having a higher thermal emissivity than the first bus bar.

Description

TECHNICAL FIELD Embodiments of the present invention relate to an electrical connection unit. Priority is claimed on Japanese Patent Application No. 2024-172573 filed in Japan on Oct. 1, 2024, the content of which is incorporated herein by reference. BACKGROUND ART An electrical connection unit having an electronic component and a bus bar connected to the electronic component is known. PRIOR ART DOCUMENT Patent Document [Patent Document 1] Japanese Unexamined Patent Application, First Publication No. 2024-037492 SUMMARY OF INVENTION Problems to be Solved by the Invention Incidentally, it is expected to improve a heat dissipation property of an electrical connection unit. An embodiment provides an electrical connection unit capable of improving a heat dissipation property. Means for Solving the Problem An electrical connection unit according to an embodiment includes an electronic component, a first bus bar, a base member, a rigid member, and a first heat transfer member. The first bus bar is electrically connected to a first terminal of the electronic component. The base member supports the first bus bar. The rigid member faces the base member. The first heat transfer member is disposed between the rigid member and the first bus bar and has elasticity. The rigid member includes a first fixing portion to which the base member is fixed and a second fixing portion to which the electronic component is fixed. When viewed from a first direction from the base member toward the rigid member, a part of the first heat transfer member is located on a straight line connecting the first fixing portion and the second fixing portion. Effect of Invention According to one embodiment, it is possible to improve a heat dissipation property. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 A cross-sectional view illustrating an electrical connection unit of an embodiment. FIG. 2 A perspective view for describing a main body of the embodiment. FIG. 3 A perspective view for describing a subunit of the embodiment. FIG. 4 A partially exploded perspective view of the subunit of the embodiment. FIG. 5 A perspective view for describing an electronic component and a connection component of the embodiment. FIG. 6 A perspective view for describing the electronic component and the connection component of the embodiment. FIG. 7 A perspective view illustrating the connection component of the embodiment. FIG. 8 A perspective view illustrating a routing board of the embodiment. FIG. 9 A partially exploded perspective view of the routing board of the embodiment. FIG. 10 A plan view illustrating the routing board of the embodiment. FIG. 11 A partially exploded perspective view of a connection unit of the embodiment. FIG. 12 A bottom view illustrating the routing board of the embodiment. FIG. 13 Aa cross-sectional view taken along line F13-F13 of a structure illustrated in FIG. 10. FIG. 14 A cross-sectional view illustrating a modification example of the embodiment. FIG. 15 A cross-sectional view illustrating a modification example of the embodiment. FIG. 16 A cross-sectional view illustrating a modification example of the first embodiment. FIG. 17 A cross-sectional view illustrating a modification example of the first embodiment. FIG. 18 A cross-sectional view taken along line F18-F18 of the structure illustrated in FIG. 10. EMBODIMENTS FOR CARRYING OUT THE INVENTION Hereinafter, embodiments will be described with reference to the drawings. In the following description, constitutions having the same or similar functions are denoted by the same reference numbers. Redundant descriptions of these constitutions may be omitted. Note that the constitution described below does not limit the scope of the embodiment. In the present disclosure, the terms are defined as follows. The term “connection” is not limited to a mechanical connection, and may include an electrical connection. That is, the term “connection” is not limited to a case where two elements that are connection targets are directly connected, and may include a case where two elements that are connection targets are connected with another element interposed therebetween. The term “accommodation” is not limited to a case where the entire component is accommodated, and may include a case where only a part of the component is accommodated (a state in which the remaining part of the component protrudes). The term “facing” indicates that virtual projection images of two target objects overlap each other when viewed from a specific direction. That is, the term “facing” is not limited to a case where two target objects directly face each other, and may include a case where two target objects face each other in a state in which another member exists between the two target objects. “Parallel”, “orthogonal”, or “the same” may include “substantially parallel”, “substantially orthogonal”, or “substantially the same”, respectively. In the present disclosure, a +X direction, a −X direction, a +Y direction, a −Y