Electrical connection unit

Abstract

This electrical connection unit comprises: an electronic component; a first wiring material; a second wiring material; a first metal part; a second metal part; and a holder member. The electronic component has a first terminal, a second terminal, and an insulating rib. The first wiring material is fixed to the first terminal by means of a first fastening member inserted into a first attachment hole. The second wiring material is fixed to the second terminal by means of a second fastening member inserted into a second attachment hole. The first metal part is co-fastened with the first wiring material by insertion of the first fastening member into a third attachment hole. The second metal part is co-fastened with the second wiring member by insertion of the second fastening member into a fourth attachment hole. The holder member integrally holds the first metal part and the second metal part and is attached to the insulating rib.

Description

Electrical connection unit

[0001] An embodiment of the present invention relates to an electrical connection unit. This application claims priority to Japanese Patent Application No. 2024-206224 filed in Japan on November 27, 2024, and incorporates its content herein by reference.

[0002] An electrical connection unit having an electronic component and a wiring material electrically connected to the electronic component is known.

[0003] Japanese Unexamined Patent Application Publication No. 2024-037492

[0004] By the way, improvement in assemblability is expected for the electrical connection unit.

[0005] One embodiment provides an electrical connection unit capable of improving assemblability.

[0006] The electrical connection unit of one embodiment has an electronic component, a first wiring material, a second wiring material, a first metal part, a second metal part, and a holder member. The electronic component has a first terminal, a second terminal, and an insulating rib. The insulating rib is disposed between the first terminal and the second terminal when viewed from a first direction. The first wiring material has a first mounting hole and is fixed to the first terminal by a first fastening member inserted into the first mounting hole from the first direction. The second wiring material has a second mounting hole and is fixed to the second terminal by a second fastening member inserted into the second mounting hole from the first direction. The first metal part has a third mounting hole facing the first mounting hole, and the first fastening member is inserted into the third mounting hole to be fastened together with the first wiring material. The second metal part has a fourth mounting hole facing the second mounting hole, and the second fastening member is inserted into the fourth mounting hole to be fastened together with the second wiring material. The holder member integrally holds the first metal part and the second metal part and is attached to the insulating rib.

[0007] According to one embodiment, assemblability can be improved.

[0008] A cross-sectional view showing the electrical connection unit of the first embodiment. A perspective view showing a part of the electrical connection unit of the first embodiment. A perspective view showing a part of the electrical connection unit of the first embodiment disassembled. A diagram showing the heat storage unit of the first embodiment. A diagram showing the mounting method of the heat storage unit of the first embodiment. A cross-sectional view showing a modified version of the electrical connection unit of the first embodiment. A cross-sectional view showing the electrical connection unit of the second embodiment. A perspective view showing a part of the electrical connection unit of the second embodiment disassembled. A perspective view showing a part of the electrical connection unit of the third embodiment disassembled. A cross-sectional view showing the electronic components and heat storage unit of the third embodiment. A perspective view showing a part of the electrical connection unit of the fourth embodiment disassembled. A cross-sectional view showing the electrical components and heat storage unit of the fourth embodiment. A cross-sectional view showing the electrical connection unit of the fifth embodiment. A perspective view showing a part of the electrical connection unit of the fifth embodiment disassembled.

[0009] The embodiments will be described below with reference to the drawings. In the following description, components having the same or similar functions will be denoted by the same reference numerals. Duplication of these components may be omitted. The components described below do not limit the scope of the embodiments.

[0010] In this disclosure, terms are defined as follows: “Connection” may include electrical connections, not just mechanical ones. That is, “Connection” may include cases where two elements to be connected are directly connected, not just cases where two elements to be connected are connected with another element in between. “Facing” or “overlapping” means that the virtual projections of two objects overlap when viewed from a particular direction. That is, “Facing” or “overlapping” may include cases where two objects face each other with another member or gap between them, not just cases where two objects face each other. “Parallel,” “orthogonal,” or “same” may include cases where they are “approximately parallel,” “approximately orthogonal,” or “approximately the same,” respectively.

[0011] In this disclosure, the +X direction, -X direction, +Y direction, -Y direction, +Z direction, and -Z direction are defined as follows: The +X direction is, for example, the direction from the electronic component 10 (described later) toward the first connection portion 31 of the busbar 30 (see Figure 1). The -X direction is the direction opposite to the +X direction. Hereinafter, when the +X direction and the -X direction are not distinguished, they will simply be referred to as the "X direction". The +Y direction and the -Y direction are directions that intersect (for example, are orthogonal to) the X direction. The +Y direction is, for example, the direction from the first terminal 13A of the electronic component 10 (described later) toward the second terminal 13B (see Figure 3). The -Y direction is the direction opposite to the +Y direction. Hereinafter, when the +Y direction and the -Y direction are not distinguished, they will simply be referred to as the "Y direction". The +Z direction and the -Z direction are directions that intersect (for example, are orthogonal to) the X direction and the Y direction. The +Z direction is the direction from the first wall 5a to the second wall 5b of the housing 5 (see Figure 1). The -Z direction is the opposite direction to the +Z direction. Hereafter, when the +Z direction and the -Z direction are not distinguished, they will simply be referred to as the "Z direction".

[0012] In the following, when the X and Y directions are not distinguished, they may be referred to as the "horizontal direction." In the following, the Z direction may be referred to as the "vertical direction." Also, in the following, the +Z direction may be referred to as "up," and the -Z direction may be referred to as "down." However, these expressions are for the convenience of explanation and do not limit the direction of gravity of the electrical connection unit 1 (the installation orientation of the electrical connection unit 1).

[0013] (A. First Embodiment) <A1. Configuration of the Electrical Connection Unit> Figure 1 is a cross-sectional view showing the electrical connection unit 1 of the first embodiment. The electrical connection unit 1 is an in-vehicle device installed in a vehicle such as an EV (Electric Vehicle), HEV (Hybrid Electric Vehicle), or PHEV (Plug-in Hybrid Electric Vehicle). The electrical connection unit 1 may be called, for example, an "electrical connection box" or a "junction box". However, the electrical connection unit 1 is not limited to a box-shaped device. The electrical connection unit 1 has, for example, a housing 5 and a main body MU.

[0014] The housing 5 is a component that forms the outer casing of the electrical connection unit 1. The housing 5 is made of, for example, synthetic resin and has insulating properties. The housing 5 houses the main body MU. The housing 5 includes a first wall portion 5a (first portion) that covers at least a part of the main body MU from the -Z direction side, and a second wall portion 5b (second portion) that covers at least a part of the main body MU from the +Z direction side. Note that the housing 5 may be omitted.

[0015] Furthermore, instead of the box-shaped housing 5, the electrical connection unit 1 may have an insulating base member 6 that includes a first wall portion 5a and is open on the +Z direction side. The first wall portion 5a of the base member 6 may be a wall portion along the horizontal direction, or it may be a structure in which multiple ribs standing upright in the vertical direction are combined. Furthermore, instead of the box-shaped housing 5, the electrical connection unit 1 may have an insulating base member 7 that includes a second wall portion 5b and is open on the -Z direction side. The second wall portion 5b of the base member 7 may be a wall portion along the horizontal direction, or it may be a structure in which multiple ribs standing upright in the vertical direction are combined. In the following description, "housing 5" may be read as "base member 6" or "base member 7". Housing 5, base member 6, and base member 7 are each examples of "supports" that support the electronic components 10 or busbars 30, which will be described later. Furthermore, the electrical connection unit 1 may have, instead of a box-shaped housing 5, an insulating base member 6 including a first wall portion 5a and open on the +Z direction side, or an insulating base member 7 including a second wall portion 5b and open on the -Z direction side. The first wall portion 5a of the base member 6 may be a wall portion along the horizontal direction, or a structure in which multiple ribs standing upright in the vertical direction are combined. The second wall portion 5b of the base member 7 may be a wall portion along the horizontal direction, or a structure in which multiple ribs standing upright in the vertical direction are combined. In the following description, "housing 5" may be read as "base member 6" or "base member 7". Each of the housing 5, base member 6, and base member 7 is an example of a "support" for supporting the electronic component 10 or busbar 30, which will be described later.

[0016] The main body MU is the part of the electrical connection unit 1 that performs the main function (for example, switching the electrical connection state or overcurrent protection). The main body MU may also be referred to as a "circuit configuration". The main body MU includes, for example, one or more electronic components 10, a plurality of busbars 30 (see Figure 2), and a heat storage unit HU.

[0017] <A2. Electronic Components> First, let's explain the electronic components 10. The electronic components 10 are electronic components that are mounted on the main unit MU according to the required functions. The electronic components 10 are, for example, connectors, fuses, relays (e.g., mechanical relays or semiconductor relays), capacitors, branching components, various sensors (e.g., current sensors or voltage sensors), electronic control units, or electronic component units that combine two or more of these into a single unit. However, the types of electronic components 10 are not limited to the above examples. The electronic components 10 are, for example, heat-generating components that generate heat when energized.

[0018] Figure 2 is a perspective view showing a part of the electrical connection unit 1. Figure 3 is a perspective view showing a disassembled part of the electrical connection unit 1. The electronic component 10 includes, for example, a case 11, a component body 12, a plurality of terminals 13, and a plurality of mounting parts 14 (only one is shown in Figures 2 and 3).

[0019] The case 11 is an outer casing that forms most of the external shape of the electronic component 10. The case 11 is made of, for example, synthetic resin and has insulating properties. The case 11 houses the component body 12. The case 11 and the component body 12 may be formed as a single unit.

[0020] In this embodiment, the case 11 has insulating ribs 11a that protrude horizontally (for example, in the +X direction) and extend in the Z direction. The insulating ribs 11a are, for example, plate-shaped and aligned along the X and Z directions. The insulating ribs 11a extend, for example, along the entire length of the case 11 in the Z direction. When viewed from the X direction, the insulating ribs 11a are positioned between a plurality of terminals 13 (terminals 13A and 13B, described later). The insulating ribs 11a electrically insulate terminals 13A and 13B. In this embodiment, a portion of the insulating ribs 11a is positioned between two metal parts 50A and 50B, described later. The insulating ribs 11a electrically insulate, for example, between the two metal parts 50A and 50B.

[0021] The main body portion 12 of the component is responsible for the main function of the electronic component 10. For example, if the electronic component 10 is a relay, the main body portion 12 includes a switching portion (e.g., a contact portion) that switches between a conductive state and a non-conductive state. For example, if the electronic component 10 is a fuse, the main body portion 12 includes a fuse that melts when an overcurrent flows. For example, if the electronic component 10 is a capacitor, the main body portion 12 includes a portion that stores electric charge.

[0022] Terminal 13 is an electrical connection part exposed to the outside of the case 11. Terminal 13 is electrically connected to the component body 12 inside the case 11. In this embodiment, the electronic component 10 includes terminals 13A and terminal 13B as a plurality of terminals 13. One of terminals 13A and terminal 13B is the positive terminal. The other of terminals 13A and terminal 13B is the negative terminal. One of terminals 13A and terminal 13B is an example of a "first terminal". The other of terminals 13A and terminal 13B is an example of a "second terminal".

[0023] In this embodiment, terminals 13A and 13B are provided at one end of the electronic component 10 in the horizontal direction (e.g., the X direction). Terminals 13A and 13B are arranged side by side in the horizontal direction (e.g., the Y direction). Each of terminals 13A and 13B faces the horizontal direction (e.g., the X direction).

[0024] Each terminal 13 has a mounting hole 13h into which a fastening member 41 (for example, a screw or bolt), described later, is inserted. The mounting hole 13h opens horizontally (for example, in the +X direction). In this embodiment, the fastening member 41 is inserted into the mounting hole 13h from the X direction (for example, from the +X direction side). The inner circumferential surface of the mounting hole 13h of the electronic component 10 has a screw groove. The mounting hole 13h is a bottomed hole provided in the electronic component 10.

[0025] (Mounting portion) The mounting portion 14 is a portion for fixing the electronic component 10. The mounting portion 14 is superimposed in the Z direction on a fixing portion 5f (e.g., a boss, see Figure 2) provided on the first wall portion 5a or the second wall portion 5b of the housing 5. The mounting portion 14 has a mounting hole 14h into which a fastening member 19 (e.g., a screw or bolt) is inserted (see Figure 3). The mounting hole 14h is open in the Z direction. The mounting hole 14h is a through hole through which the fastening member 19 passes. The mounting portion 14 is fixed to the fixing portion 5f of the housing 5 by the fastening member 19. With this configuration, the electronic component 10 is fixed to the housing 5. Alternatively, the electronic component 10 may be fixed to the base member 6 or base member 7 described above.

[0026] <A3. Busbar> Next, we will return to Figure 1 and explain the busbar 30. The busbar 30 is a wiring material that electrically connects multiple connection targets. The busbar 30 is made of metal (for example, copper, copper alloy, aluminum, or aluminum alloy) and is conductive. The busbar 30 electrically connects a first connection target (first component) and a second connection target (second component). For example, the busbar 30 electrically connects an electronic component 10 to another busbar 9 in the electrical connection unit 1. The electronic component 10 is an example of the "first connection target" or "first component". The busbar 9 is an example of the "second connection target" or "second component". The busbar 30 is an example of a "wiring material". In this disclosure, the term "wiring material" is not limited to the busbar 30. Connection components 120, which will be described later, are also examples of "wiring materials". In this disclosure, "connecting component" means a component that is placed between a cable (e.g., a busbar) and an object to be connected (e.g., an electronic component or another busbar) and connects the cable (e.g., a busbar) and the object to be connected.

[0027] Furthermore, the first and second connection targets are not limited to the examples above. The connection target can be any one of the following: an electronic component, a connection component, another busbar in the electrical connection unit 1, or a busbar for external connection. For example, busbar 30 may electrically connect electronic component 10 (first connection target) to another electronic component 10 (second connection target). Below, as an example of busbar 30, a busbar 30 that electrically connects electronic component 10 (first connection target) to another busbar 9 (second connection target) in the electrical connection unit 1 will be described. However, in the following description, the terms "electronic component 10" and "busbar 9" may be appropriately replaced with other components based on the above-mentioned intent.

[0028] As shown in Figure 1, the busbar 30 has, for example, a first connecting portion 31, a second connecting portion 32, and an extension portion 33. In this embodiment, the entire busbar 30, including the first connecting portion 31, the second connecting portion 32, and the extension portion 33, is formed from a single sheet of material (for example, by bending a single sheet of material).

[0029] (First connection portion) The first connection portion 31 is the portion that is connected to the first connection target (for example, the electronic component 10). The first connection portion 31 is located in the middle of the bus bar 30 or at the first end of the bus bar 30. In this embodiment, the first connection portion 31 is arranged in an upright position in the Z direction. The first connection portion 31 is a plate portion that is aligned with the Y and Z directions. The first connection portion 31 is adjacent to the electronic component 10 in the X direction. When viewed from the X direction, the first connection portion 31 includes a portion that overlaps with the terminal 13 of the electronic component 10. In another view, when viewed from the X direction, the first connection portion 31 includes a portion that overlaps with the fastening member 41 inserted into the terminal 13 or the washer 42 through which the fastening member 41 passes.

[0030] The first connecting portion 31 has a mounting hole 31h into which a fastening member 41 is inserted from the X direction (for example, from the +X direction). The mounting hole 31h does not have, for example, a screw thread. The mounting hole 31h is, for example, a through hole that penetrates the first connecting portion 31 in the X direction. The mounting hole 31h of the first connecting portion 31 faces the mounting hole 13h of the electronic component 10 in the X direction. The fastening member 41 is inserted into the mounting hole 31h of the first connecting portion 31 along the X direction. The fastening member 41 passed through the mounting hole 31h of the first connecting portion 31 engages with the mounting hole 13h of the electronic component 10. With this configuration, the first connecting portion 31 of the busbar 30 and the terminal 13 of the electronic component 10 are physically and electrically connected.

[0031] (Second connection portion) The second connection portion 32 is the portion that is connected to a second connection target (for example, another bus bar 9). The second connection portion 32 is located in the middle of the bus bar 30 or at the second end of the bus bar 30. In this embodiment, the second connection portion 32 is parallel to the first wall portion 5a of the housing 5. The second connection portion 32 is a plate portion that is aligned with the X and Y directions. The second connection portion 32 overlaps with the end of the bus bar 9 in the Z direction. When viewed from the Z direction, the second connection portion 32 includes a portion that overlaps with the fastening member 45 or the washer 46 through which the fastening member 45 passes, which will be described later. In this embodiment, the bus bar 9 has a mounting hole 9h through which the fastening member 45 is inserted. The mounting hole 9h does not have screw threads, for example.

[0032] The second connecting portion 32 has a mounting hole 32h into which a fastening member 45 (e.g., a screw or bolt) is inserted. The mounting hole 32h does not have, for example, a screw thread. The mounting hole 32h is, for example, a through hole that penetrates the second connecting portion 32 in the Z direction. The mounting hole 32h of the second connecting portion 32 faces the mounting hole 9h of the busbar 9 in the Z direction. The fastening member 45 is inserted along the Z direction into the mounting hole 32h of the second connecting portion 32 and the mounting hole 9h of the busbar 9. An engaging member 47 (e.g., a nut) is engaged with the tip of the fastening member 45 that has passed through the mounting hole 32h of the second connecting portion 32 and the mounting hole 9h of the busbar 9. This configuration connects the second connecting portion 32 of the busbar 30 to another busbar 9 both physically and electrically.

[0033] Alternatively, instead of the above example, either the mounting hole 32h of the second connecting portion 32 or the mounting hole 9h of the busbar 9 may have a screw groove so that the fastening member 45 can engage with it. In this case, the engaging member 47 may be omitted.

[0034] (Extended portion) The extended portion 33 is provided between the first connecting portion 31 and the second connecting portion 32. The extended portion 33 extends from the first connecting portion 31 toward the second connecting portion 32. The extended portion 33 extends across the first connecting portion 31 and the second connecting portion 32. The extended portion 33 connects the first connecting portion 31 and the second connecting portion 32. In this embodiment, the extended portion 33 bends in the -X direction from the -Z direction end of the first connecting portion 31 and extends along the X direction.

[0035] Next, the arrangement of the multiple busbars 30 will be described. As shown in Figure 3, the electrical connection unit 1 has multiple busbars 30, including a first busbar 30A and a second busbar 30B. In the following, when the first busbar 30A and the second busbar 30B are not distinguished, they will simply be referred to as "busbar 30".

[0036] The first connection portion 31 of the first busbar 30A is adjacent to the first terminal 13A of the electronic component 10 in the X direction. The first connection portion 31 of the first busbar 30A is fixed to the first terminal 13A of the electronic component 10 by a fastening member 41 (fastening member 41A) inserted from the X direction into the mounting hole 31h of the first connection portion 31 of the first busbar 30A. The first busbar 30A is an example of the "first cable routing member". The mounting hole 31h of the first connection portion 31 of the first busbar 30A is an example of the "first mounting hole". The fastening member 41A is an example of the "first fastening member".

[0037] The second busbar 30B is adjacent to the first busbar 30A in the Y direction. The first connection portion 31 of the second busbar 30B is adjacent to the second terminal 13B of the electronic component 10 in the X direction. The first connection portion 31 of the second busbar 30B is fixed to the second terminal 13B of the electronic component 10 by a fastening member 41 (fastening member 41B) inserted from the X direction into the mounting hole 31h of the first connection portion 31 of the second busbar 30B. The second busbar 30B is an example of a "second cable routing member". The mounting hole 31h of the first connection portion 31 of the second busbar 30B is an example of a "second mounting hole". The fastening member 41B is an example of a "second fastening member".

[0038] <A4. Heat Storage Unit> Next, the heat storage unit HU will be described. The heat storage unit HU is a structure for improving the thermal characteristics (e.g., heat storage and / or heat dissipation) of the electrical connection unit 1. The heat storage unit HU has, for example, a plurality of metal parts 50 and a holder member 60.

[0039] <A4.1 Metal part> The metal part 50 is a metal member that stores (absorbs) at least a portion of the heat generated by the first connection target (electronic component 10) or the second connection target, and / or at least a portion of the heat generated by the wiring material (e.g., bus bar 30) itself. The metal part 50 may also be a member that reduces thermal interference to the electronic component 10 from external equipment (external connection bus bar), in addition to the above example. The metal part 50 is made of copper, copper alloy, aluminum, or aluminum alloy, but is not limited to these examples.

[0040] In this embodiment, the metal part 50 is a metal plate portion (for example, a metal sheet material) oriented along the Y and Z directions. The thickness T50 of the metal part 50 in the X direction is, for example, the same as the thickness T31 of the first connection portion 31 of the busbar 30 in the X direction (see Figure 1). However, the thickness T50 of the metal part 50 in the X direction may be greater than or less than the thickness T31 of the first connection portion 31 of the busbar 30 in the X direction. The metal part 50 may be a metal block oriented in the vertical direction instead of a metal sheet material oriented in the vertical direction. For example, the thickness T50 of the metal part 50 in the X direction may be twice or more the thickness T31 of the first connection portion 31 of the busbar 30 in the X direction.

[0041] The metal part 50 is arranged parallel to the first connection portion 31 of the bus bar 30. The metal part 50 is adjacent to the first connection portion 31 of the bus bar 30 in the X direction. In this embodiment, the metal part 50 is located between the electronic component 10 and the first connection portion 31 of the bus bar 30 in the X direction. Alternatively, the metal part 50 may be located on the opposite side of the first connection portion 31 of the bus bar 30 from the electronic component 10 in the X direction. An example of this case will be described later as a modification of the first embodiment.

[0042] The metal part 50 has a mounting hole 50h into which the fastening member 41 is inserted from the X direction (for example, from the +X direction). The mounting hole 50h is a through hole that penetrates the metal part 50 in the X direction. The mounting hole 50h does not have, for example, a screw thread. The mounting hole 50h of the metal part 50 faces the mounting hole 31h of the first connection part 31 of the busbar 30 in the X direction. The fastening member 41 described above is inserted into the mounting hole 50h of the metal part 50 from the X direction. In this embodiment, the fastening member 41 is passed through the mounting hole 31h of the first connection part 31 and the mounting hole 50h of the metal part 50 and engages with the mounting hole 13h of the electronic component 10. The metal part 50 is fastened together with the first connection part 31 of the busbar 30 by inserting the fastening member 41 into the mounting hole 50h. In other words, the metal part 50 and the first connection part 31 of the busbar 30 are fastened together to the terminal 13 of the electronic component 10 by the fastening member 41.

[0043] Next, the arrangement of the multiple metal parts 50 will be described. As shown in Figure 3, the electrical connection unit 1 has multiple metal parts 50, namely a first metal part 50A and a second metal part 50B. In the following, when the first metal part 50A and the second metal part 50B are not distinguished, they will simply be referred to as "metal part 50".

[0044] The first metal part 50A is adjacent to the first connection part 31 of the first bus bar 30A in the X direction. The mounting hole 50h of the first metal part 50A faces the mounting hole 31h of the first connection part 31 of the first bus bar 30A in the X direction. The first metal part 50A is fastened together with the first connection part 31 of the first bus bar 30A by inserting the fastening member 41A into the mounting hole 50h of the first metal part 50A from the X direction. That is, the first metal part 50A and the first connection part 31 of the first bus bar 30A are fastened together to the first terminal 13A of the electronic component 10 by the fastening member 41A. The mounting hole 50h of the first metal part 50A is an example of the "third mounting hole".

[0045] The second metal part 50B is adjacent to the first metal part 50A in the Y direction. The second metal part 50B is adjacent to the first connection part 31 of the second bus bar 30B in the X direction. The mounting hole 50h of the second metal part 50B faces the mounting hole 31h of the first connection part 31 of the second bus bar 30B in the X direction. The second metal part 50B is fastened together with the first connection part 31 of the second bus bar 30B by inserting the fastening member 41B into the mounting hole 50h of the second metal part 50B from the X direction. That is, the second metal part 50B and the first connection part 31 of the second bus bar 30B are fastened together to the second terminal 13B of the electronic component 10 by the fastening member 41B. The mounting hole 50h of the second metal part 50B is an example of the "fourth mounting hole".

[0046] <A4.2 Holder member> Figure 4 is a diagram showing the holder member 60. The holder member 60 is a member for integrating the first metal part 50A and the second metal part 50B. The holder member 60 has, for example, a main body part 61 and an engaging part 62.

[0047] (Main body part) The main body part 61 is a part that integrally holds the first metal part 50A and the second metal part 50B. The main body part 61 is, for example, formed in a frame shape surrounding the outer peripheries of the first metal part 50A and the second metal part 50B. The main body part 61 is made of, for example, synthetic resin and has insulating properties. The main body part 61 is integrally formed with the first metal part 50A and the second metal part 50B by, for example, insert molding. That is, in the present embodiment, the first metal part 50A, the second metal part 50B, and the holder member 60 are provided as a single member. Note that the structure for integrating the first metal part 50A and the second metal part 50B with the main body part 61 is not limited to the above example. For example, the first metal part 50A and the second metal part 50B may be integrated with the main body part 61 by a structure using an adhesive or welding or the like.

[0048] In the present embodiment, the main body part 61 has, for example, a first part 61a, a second part 61b, a third part 61c, a fourth part 61d, and a fifth part 61e.

[0049] The first part 61a is located on the +Z direction side with respect to the first metal part 50A and the second metal part 50B. The first part 61a extends linearly in the Y direction. The second part 61b is located on the -Z direction side with respect to the first metal part 50A and the second metal part 50B. The second part 61b extends linearly in the Y direction. The first metal part 50A and the second metal part 50B are sandwiched between the first part 61a and the second part 61b from the +Z direction side and the -Z direction side.

[0050] The third part 61c is located on the -Y direction side with respect to the first metal part 50A and the second metal part 50B. The third part 61c extends linearly in the Z direction. The fourth part 61d is located on the +Y direction side with respect to the first metal part 50A and the second metal part 50B. The fourth part 61d extends linearly in the Z direction. The first metal part 50A and the second metal part 50B are sandwiched between the third part 61c and the fourth part 61d from the +Y direction side and the -Y direction side.

[0051] The fifth part 61e is disposed between the first metal part 50A and the second metal part 50B in the Y direction. The fifth part 61e extends in the Z direction. The fifth part 61e electrically insulates between the first metal part 50A and the second metal part 50B.

[0052] Each of the first metal part 50A and the second metal part 50B is held by the main body 61 and exposed to the outside of the heat storage unit HU in the +X direction and the -X direction. Therefore, each of the first metal part 50A and the second metal part 50B can easily contact the terminal 13 of the electronic component 10 in the X direction, and can also easily contact the first connection part 31 of the busbar 30 in the X direction.

[0053] (Engaging portion) The engaging portion 62 is the portion that engages with the insulating rib 11a of the electronic component 10. In this embodiment, the engaging portion 62 includes a slit-shaped opening 62g extending in the Z direction. The opening 62g is provided, for example, in the fifth portion 61e of the main body 61. That is, the opening 62g is located between the first metal portion 50A and the second metal portion 50B in the Y direction. The opening 62g is open, for example, on the -Z direction side. The opening 62g penetrates the main body 61 in the X direction.

[0054] In this embodiment, the engaging portion 62 can be attached to the insulating rib 11a from the Z direction. For example, the engaging portion 62 can be attached to the insulating rib 11a of the electronic component 10 from the +Z direction side by inserting the insulating rib 11a of the electronic component 10 into the opening 62g along the Z direction. The holder member 60 is attached to the insulating rib 11a of the electronic component 10 from the Z direction. Alternatively / in addition to the above example, the engaging portion 62 may also be attached to the insulating rib 11a from the X direction (for example, from the +X direction side).

[0055] Figure 5 shows the method for installing the heat storage unit HU. In this embodiment, the heat storage unit HU is attached to the insulating rib 11a of the electronic component 10 before the busbar 30 is attached to the terminal 13 of the electronic component 10.

[0056] For example, the heat storage unit HU is moved downward from a state where the engaging portion 62 of the holder member 60 is positioned above the insulating rib 11a of the electronic component 10. Through this operation, the insulating rib 11a of the electronic component 10 is inserted into the opening 62g of the engaging portion 62 of the holder member 60 from the -Z direction side and engages with the opening 62g. As a result of this engagement, the mounting hole 50h of the first metal part 50A faces the mounting hole 13h of the first terminal 13A of the electronic component 10 in the X direction, and the mounting hole 50h of the second metal part 50B faces the mounting hole 13h of the second terminal 13B of the electronic component 10 in the X direction. This operation positions the heat storage unit HU relative to the electronic component 10.

[0057] In this embodiment, after the heat storage unit HU is positioned relative to the electronic component 10, the mounting hole 31h of the first connection portion 31 of the first busbar 30A is positioned so that it faces the mounting hole 50h of the first metal portion 50A in the X direction. Then, the first fastening member 41A is inserted into the mounting hole 31h of the first busbar 30A and the mounting hole 50h of the first metal portion 50A. The tip of the first fastening member 41A, which has passed through the mounting hole 31h of the first busbar 30A and the mounting hole 50h of the first metal portion 50A, is engaged with the mounting hole 13h of the first terminal 13A of the electronic component 10. Through this operation, the first connection portion 31 of the first busbar 30A and the first metal portion 50A are fixed to the first terminal 13A of the electronic component 10 by fastening together.

[0058] Similarly, in this embodiment, after the heat storage unit HU is positioned relative to the electronic component 10, the mounting hole 31h of the first connection portion 31 of the second bus bar 30B is positioned so that it faces the mounting hole 50h of the second metal portion 50B in the X direction. The second fastening member 41B is then inserted into the mounting hole 31h of the second bus bar 30B and the mounting hole 50h of the second metal portion 50B. The tip of the second fastening member 41B, which has passed through the mounting hole 31h of the second bus bar 30B and the mounting hole 50h of the second metal portion 50B, is then engaged with the mounting hole 13h of the second terminal 13B of the electronic component 10. This process fixes the first connection portion 31 of the second bus bar 30B and the second metal portion 50B to the second terminal 13B of the electronic component 10 by fastening them together.

[0059] Alternatively, the opening 62g of the engaging portion 62 may be a groove that is open in the -X direction. In this case, the heat storage unit HU may be attached to the terminal 13 of the electronic component 10 from the X direction.

[0060] <A5. Advantages> As a comparative example, an electrical connection unit without a holder member 60 will be described. In such a configuration, when fastening the first busbar 30A and the first metal part 50A together to the first terminal 13A of the electronic component 10, the first metal part 50A may rotate relative to the first busbar 30A as the first fastening member 41A rotates. For this reason, it becomes necessary to provide a first rotation-preventing mechanism to prevent the first metal part 50A from rotating relative to the first busbar 30A. Such a first rotation-preventing mechanism includes, for example, a first through-hole provided in the first busbar 30A and a first hook provided in the first metal part 50A and inserted into the first through-hole.

[0061] Similarly, when fastening the second busbar 30B and the second metal part 50B together to the second terminal 13B of the electronic component 10, the second metal part 50B may rotate relative to the second busbar 30B as the second fastening member 41B rotates. For this reason, it becomes necessary to provide a second rotation-preventing mechanism to prevent the second metal part 50B from rotating relative to the second busbar 30B. Such a second rotation-preventing mechanism includes, for example, a second through-hole provided in the second busbar 30B and a second hook provided in the second metal part 50B and inserted into the second through-hole.

[0062] In this comparative example configuration, it is necessary to insert the first hook provided on the first metal part 50A into the first through hole provided on the first busbar 30A, and to insert the second hook provided on the second metal part 50B into the second through hole provided on the second busbar 30B, making it difficult to improve the assembly workability of the electrical connection unit.

[0063] In this embodiment, the electrical connection unit (for example, electrical connection unit 1) includes an electronic component (for example, electronic component 10), a first cable guide (for example, a first busbar 30A), a second cable guide (for example, a second busbar 30B), a first metal part (for example, a first metal part 50A), a second metal part (for example, a second metal part 50B), and a holder member (for example, a holder member 60). The electronic component has a first terminal (for example, a first terminal 13A), a second terminal (for example, a second terminal 13B), and an insulating rib (for example, an insulating rib 11a). The insulating rib is located between the first terminal and the second terminal when viewed from a first direction (for example, the X direction). The first cable guide has a first mounting hole (for example, a mounting hole 31h) and is fixed to the first terminal by a first fastening member (for example, a first fastening member 41A) inserted into the first mounting hole from the first direction. The second cable member has a second mounting hole (for example, mounting hole 31h) and is fixed to the second terminal by a second fastening member (for example, second fastening member 41B) inserted into the second mounting hole from the first direction. The first metal part has a third mounting hole (for example, mounting hole 50h) facing the first mounting hole, and is fastened together with the first cable member by inserting the first fastening member into the third mounting hole. The second metal part has a fourth mounting hole (for example, mounting hole 50h) facing the second mounting hole, and is fastened together with the second cable member by inserting the second fastening member into the fourth mounting hole. The holder member integrally holds the first metal part and the second metal part and is attached to the insulating rib.

[0064] With this configuration, the rotation of the first metal part relative to the first cable member and the rotation of the second metal part relative to the second cable member can be suppressed by a single operation of attaching the holder member to the insulating rib of the electronic component. In other words, the rotation of the first and second metal parts can be restricted with fewer operations compared to the configuration of the comparative example. This configuration improves the ease of assembly of the electrical connection unit.

[0065] In this embodiment, the holder member has an engaging portion (e.g., engaging portion 62) that can be attached to the insulating rib from a second direction (e.g., the Z direction) intersecting the first direction. With this configuration, the alignment and rotation restriction of the first metal portion with respect to the first cable member and the alignment and rotation restriction of the second metal portion with respect to the second cable member can be achieved by simply moving the holder member from top to bottom. This further improves the ease of assembly of the electrical connection unit.

[0066] <A6. Modified Version> Next, a modified version of the first embodiment will be described. Figure 6 is a cross-sectional view showing the electrical connection unit 1 of a modified version of the first embodiment. In this modified version, the heat storage unit HU is located on the opposite side of the bus bar 30 from the electronic component 10. That is, the first metal part 50A is located on the opposite side of the first bus bar 30A from the first terminal 13A of the electronic component 10. The second metal part 50B is located on the opposite side of the second bus bar 30B from the second terminal 13B of the electronic component 10.

[0067] Even with this configuration, the first metal part 50A and the second metal part 50B are integrated by the holder member 60, which improves the ease of assembly of the electrical connection unit.

[0068] (B. Second Embodiment) The second embodiment differs from the first embodiment in that the heat storage unit HU has a heat dissipation section 80. Except for the configuration described below, the configuration is the same as that of the first embodiment.

[0069] Figure 7 is a cross-sectional view showing an electrical connection unit 1 according to a second embodiment. In this embodiment, at least a portion of the second wall portion 5b of the housing 5 (or base member 7) is formed by a metal plate 70. The metal plate 70 is, for example, made of aluminum, an aluminum alloy, copper, or a copper alloy, but is not limited to these. The metal plate 70 is a plate portion that extends horizontally. The metal plate 70 is, for example, exposed to the outside of the electrical connection unit 1. The metal plate 70 is an example of a "heat dissipation member". The metal plate 70 may also be referred to as a "metal member". In this disclosure, the "heat dissipation member" is not limited to a metal member provided as part of the housing 5 or base member 7. The "heat dissipation member" in this disclosure may be a metal member provided separately from the housing 5 or base member 7.

[0070] In this embodiment, the heat storage unit HU has a plurality of heat dissipation sections 80 (see Figure 8) in addition to the configuration of the first embodiment. The heat dissipation sections 80 are parts for transferring heat from the metal section 50 to the metal plate 70. The heat dissipation sections 80 are made of metal. The heat dissipation sections 80 are made of, for example, copper, copper alloy, aluminum, or aluminum alloy, but are not limited to these examples.

[0071] In this embodiment, the heat dissipation section 80 is a metal plate portion oriented along the X and Y directions. When viewed from, for example, the Z direction, the heat dissipation section 80 faces the electronic component 10. Also, when viewed from the Z direction, the heat dissipation section 80 faces the metal plate 70. A heat transfer member 90 is provided between the heat dissipation section 80 and the metal plate 70.

[0072] The heat transfer member 90 is a member for transferring heat from the heat dissipation section 80 to the metal plate 70. The heat transfer member 90 is, for example, an elastic heat transfer sheet (for example, a thermally conductive silicone sheet). The heat transfer member 90 is made of a material with a higher thermal conductivity than, for example, the case 11 of the electronic component 10 or the second wall portion 5b of the housing 5. However, the heat transfer member 90 is not limited to the above example and may be a heat transfer member made of a thermally conductive gel or other material. In this embodiment, the heat transfer member 90 is insulating.

[0073] Next, the multiple heat dissipation sections 80 will be described. Figure 8 is a perspective view showing a part of the electrical connection unit 1 of the second embodiment in an exploded view. In this embodiment, the electrical connection unit 1 has multiple heat dissipation sections 80, namely a first heat dissipation section 80A and a second heat dissipation section 80B. Hereafter, if the first heat dissipation section 80A and the second heat dissipation section 80B are not distinguished, they will simply be referred to as "heat dissipation section 80".

[0074] The first heat dissipation section 80A is connected to the first metal section 50A. In this embodiment, the first metal section 50A and the first heat dissipation section 80A are integrally formed by a single metal member MA (first metal member MA). The first metal member MA is, for example, a metal plate. The first metal member MA includes the first metal section 50A and the first heat dissipation section 80A. In this embodiment, the first metal section 50A and the first heat dissipation section 80A are integrally formed by bending the first metal member MA in the middle. A heat transfer member 90 (heat transfer member 90A) is arranged between the first heat dissipation section 80A and the metal plate 70.

[0075] The second heat dissipation section 80B is connected to the second metal section 50B. In this embodiment, the second metal section 50B and the second heat dissipation section 80B are integrally formed by another metal member MB (second metal member MB). The second metal member MB is, for example, a metal plate. The second metal member MB includes the second metal section 50B and the second heat dissipation section 80B. In this embodiment, the second metal section 50B and the second heat dissipation section 80B are integrally formed by bending the second metal member MB in the middle. Another heat transfer member 90 (heat transfer member 90B) is positioned between the second heat dissipation section 80B and the metal plate 70.

[0076] In this embodiment, the first metal part 50A and the second metal part 50B are held by the holder member 60, thereby integrating the first metal part 50A, the first heat dissipation part 80A, the second metal part 50B, the second heat dissipation part 80B, and the holder member 60. This configuration further improves the ease of assembly of the electrical connection unit.

[0077] (C. Third Embodiment) The third embodiment differs from the first embodiment in that the heat storage unit HU has a metal portion 110 that faces the side surface of the electronic component 10. Except for the configuration described below, the configuration is the same as that of the first embodiment.

[0078] (Metal parts) Figure 9 is a perspective view showing a part of the electrical connection unit 1 of the third embodiment in an exploded view. In this embodiment, the heat storage unit HU has a plurality of metal parts 110 in addition to the configuration of the first embodiment. The metal parts 110 are parts that allow heat from the electronic components 10 to be released to the outside through a path different from that of the terminals 13. The metal parts 110 are made of metal. The metal parts 110 are made of, for example, copper, copper alloy, aluminum, or aluminum alloy, but are not limited to these examples.

[0079] In this embodiment, the electrical connection unit 1 has, for example, a plurality of metal parts 110, including a third metal part 110A and a fourth metal part 110B. In the following description, when the third metal part 110A and the fourth metal part 110B are not distinguished, they will simply be referred to as "metal part 110".

[0080] The third metal portion 110A is a metal plate portion (e.g., a metal plate material) that is aligned with the X and Z directions. The third metal portion 110A faces the electronic component 10 in the Y direction. The third metal portion 110A is parallel to the end face (surface) of the electronic component 10 on the -Y direction side. For example, the third metal portion 110A faces the electronic component 10 from the -Y direction side. In this embodiment, the third metal portion 110A is separated from the first metal portion 50A and the second metal portion 50B.

[0081] Similarly, the fourth metal portion 110B is a metal plate portion (e.g., a metal sheet material) along the X and Z directions. The fourth metal portion 110B faces the electronic component 10 in the Y direction. The fourth metal portion 110B is parallel to the end face (surface) of the electronic component 10 on the +Y direction side. The fourth metal portion 110B faces the electronic component 10 from, for example, the +Y direction side. In this embodiment, the fourth metal portion 110B is separated from the first metal portion 50A and the second metal portion 50B.

[0082] Figure 10 is a cross-sectional view showing the electronic component 10 and the heat storage unit HU of the third embodiment. In this embodiment, one heat transfer member 90 (heat transfer member 90C) is placed between the third metal part 110A and the electronic component 10. The heat transfer member 90C transfers a portion of the heat generated by the electronic component 10 to the third metal part 110A. In this embodiment, another heat transfer member 90 (heat transfer member 90D) is placed between the fourth metal part 110B and the electronic component 10. The heat transfer member 90D transfers a portion of the heat generated by the electronic component 10 to the fourth metal part 110B.

[0083] (Holder Member) Next, we will return to Figure 9 and describe the holder member 60. In this embodiment, the main body 61 of the holder member 60 integrally holds the first metal part 50A, the second metal part 50B, the third metal part 110A, and the fourth metal part 110B. The main body 61 is formed integrally with the first metal part 50A, the second metal part 50B, the third metal part 110A, and the fourth metal part 110B by, for example, insert molding. Note that the structure for integrating the first to fourth metal parts 50A, 50B, 110A, 110B with the main body 61 is not limited to the above example. For example, the first to fourth metal parts 50A, 50B, 110A, 110B may be integrated with the main body 61 by a structure using adhesive or welding. In addition to the above configuration, the heat transfer member 90 may also be formed integrally with the main body portion 61 of the holder member 60, for example, by insert molding or by other means.

[0084] In this embodiment, the third metal part 110A and the fourth metal part 110B are positioned by attaching the engaging portion 62 of the holder member 60 to the insulating rib 11a of the electronic component 10. The third metal part 110A and the fourth metal part 110B are supported via the holder member 60 by fixing the first metal part 50A and the second metal part 50B to the electronic component 10 by the fastening member 41.

[0085] Even with this configuration, for example, the assembly of the electrical connection unit can be improved by integrating the first metal part and the second metal part with a holder member.

[0086] In this embodiment, the electrical connection unit further comprises a third metal part (for example, a third metal part 110A). The third metal part faces the electronic component from a third direction intersecting the first direction. The holder member integrally holds the first metal part, the second metal part, and the third metal part. With this configuration, the third metal part is integrated with the first and second metal parts by the holder member, thereby further improving the ease of assembly of the electrical connection unit.

[0087] In this embodiment, the electrical connection unit further includes a heat transfer member (for example, a heat transfer member 90) provided between the third metal part and the electronic component. With this configuration, at least a portion of the heat generated by the electronic component 10 can be efficiently transferred to the third metal part. This improves the heat dissipation performance of the electrical connection unit.

[0088] (D. Fourth Embodiment) The fourth embodiment differs from the third embodiment in that the third metal part 110A and the first metal part 50A are formed from a single metal member MC, and the fourth metal part 110B and the second metal part 50B are formed from a single metal member MD. Other than the configuration described below, the configuration is the same as that of the third embodiment.

[0089] Figure 11 is a perspective view showing a disassembled portion of the electrical connection unit 1 of the fourth embodiment. Figure 12 is a cross-sectional view showing the electronic component 10 and the heat storage unit HU of the fourth embodiment. In this embodiment, the third metal part 110A is connected to the first metal part 50A. In this embodiment, the first metal part 50A and the third metal part 110A are integrally formed by a single metal member MC. The metal member MC is, for example, a metal plate. The metal member MC includes the first metal part 50A and the third metal part 110A. In this embodiment, the first metal part 50A and the third metal part 110A are integrally formed by bending the metal member MC in the middle.

[0090] Similarly, in this embodiment, the fourth metal portion 110B is connected to the second metal portion 50B. In this embodiment, the second metal portion 50B and the fourth metal portion 110B are integrally formed by another metal member MD. The metal member MD is, for example, a metal sheet. The metal member MD includes the second metal portion 50B and the fourth metal portion 110B. In this embodiment, the second metal portion 50B and the fourth metal portion 110B are integrally formed by bending the metal member MD in the middle.

[0091] Even with this configuration, for example, the assembly of the electrical connection unit can be improved by integrating the first metal part 50A and the second metal part 50B with the holder member 60. Furthermore, the assembly of the electrical connection unit can be further improved by integrating the third metal part with the holder member in addition to the first and second metal parts.

[0092] In this embodiment, the first metal part (for example, the first metal part 50A) and the third metal part (for example, the third metal part 110A) are formed from a single metal member (for example, metal member MC). With this configuration, when the terminal 13 becomes hot, some of the heat from the terminal 13 can be transferred to the third metal part via the first metal part and dissipated from the third metal part. This further improves the heat dissipation performance of the electrical connection unit.

[0093] (E. Fifth Embodiment) The fifth embodiment differs from the first embodiment in that a connecting component 120 is provided. Except for the configuration described below, the configuration is the same as that of the first embodiment.

[0094] Figure 13 is a cross-sectional view showing an electrical connection unit 1 according to a fifth embodiment. In this embodiment, the electrical connection unit 1 has a connecting component 120. The connecting component 120 is a member that electrically connects a first connection target (electronic component 10) and a second connection target (busbar 30). The connecting component 120 forms part of the current-carrying path of the electrical connection unit 1. The connecting component 120 is made of metal (for example, copper, copper alloy, aluminum, or aluminum alloy). The connecting component 120 is an example of a "wire routing material".

[0095] The connecting component 120 has, for example, a first connecting portion 121 and a second connecting portion 122. In this embodiment, the entire connecting component 120, including the first connecting portion 121 and the second connecting portion 122, is formed from a single plate material.

[0096] (First connection portion) The first connection portion 121 is the portion that is connected to the first connection target (for example, the electronic component 10). The first connection portion 121 is located at the first end of the connecting component 120. In this embodiment, the first connection portion 121 is arranged in an upright position in the Z direction. The first connection portion 121 is a plate portion that is aligned with the Y direction and the Z direction. The first connection portion 121 has a mounting hole 121h into which the fastening member 41 is inserted.

[0097] (Second connection portion) The second connection portion 122 is the portion that is connected to the second connection target (for example, the bus bar 30). The second connection portion 122 is located at the second end of the connecting component 120. In this embodiment, the second connection portion 122 is a plate portion that is aligned in the X and Y directions. In this embodiment, the first connection portion 31 of the bus bar 30 is a plate portion that is aligned in the horizontal direction. The second connection portion 122 overlaps with the first connection portion 31 of the bus bar 30 in the Z direction. The second connection portion 122 has a mounting hole 122h into which the fastening member 45 is inserted.

[0098] Next, the arrangement of the multiple connecting components 120 will be described. Figure 14 is a perspective view showing a part of the electrical connection unit 1 disassembled. The electrical connection unit 1 has multiple connecting components 120, including a first connecting component 120A and a second connecting component 120B.

[0099] The first connecting portion 121 of the first connecting component 120A is adjacent to the first terminal 13A of the electronic component 10 in the X direction. The first connecting portion 121 of the first connecting component 120A is fixed to the first terminal 13A of the electronic component 10 by a fastening member 41 (fastening member 41A) inserted into the mounting hole 31h of the first connecting portion 121 of the first connecting component 120A. The first connecting component 120A is an example of the "first wiring member". The mounting hole 121h of the first connecting portion 121 of the first connecting component 120A is an example of the "first mounting hole". The fastening member 41A is an example of the "first fastening member".

[0100] The second connecting component 120B is adjacent to the first connecting component 120A in the Y direction. The first connecting portion 121 of the second connecting component 120B is adjacent to the second terminal 13B of the electronic component 10 in the X direction. The first connecting portion 121 of the second connecting component 120B is fixed to the second terminal 13B of the electronic component 10 by a fastening member 41 (fastening member 41B) inserted into the mounting hole 121h of the first connecting portion 121 of the second connecting component 120B. The second connecting component 120B is an example of a "second wiring member". The mounting hole 121h of the first connecting portion 121 of the second connecting component 120B is an example of a "second mounting hole". The fastening member 41B is an example of a "second fastening member".

[0101] The details of the fifth embodiment, other than those described above, are the same as those of the first embodiment described above. For example, the details of the fifth embodiment can be described in the description of the first embodiment above by replacing "bus bar 30" with "connecting part 120", "first connecting part 31" with "first connecting part 121", and "mounting hole 31h" with "mounting hole 121h".

[0102] With this configuration, as in the first embodiment, it is possible to improve the thermal characteristics of the electrical connection unit.

[0103] Several embodiments and modifications have been described above. However, the embodiments and modifications are not limited to the examples described above. For example, the above-described embodiments or modifications may be implemented in combination with each other. For example, a modification of the first embodiment may be implemented in combination with the second, third, fourth, or fifth embodiment. Also, the fifth embodiment may be implemented in combination with the second, third, or fourth embodiment. The above-described embodiments can be implemented in a variety of other forms, and various additions, omissions, substitutions, and modifications can be made without departing from the spirit of this disclosure.

[0104] According to the embodiments of this disclosure, it is possible to improve the ease of assembly.

[0105] 1...Electrical connection unit 10...Electronic component 13...Terminal 13A...First terminal 13B...Second terminal 13h...Mounting hole 30...Bus bar (wired material) 30A...First bus bar (first wired material) 30B...Second bus bar (second wired material) 31h...Mounting hole 41...Fastening member 41A...Fastening member (first fastening member) 41B...Fastening member (second fastening member) 50...Metal part 50A...First metal part 50B...Second metal part 50h...Mounting hole 60...Holder member 61...Main body part 62...Engaging part 62g...Opening 70...Metal plate 90, 90A, 90B...Heat transfer member 110A...Third metal part 110B...Fourth metal part 120...Connecting part (wired material) 121h...Mounting hole 120A...First connecting component (first cable member) 120B...Second connecting component (second cable member) MA, MB, MC, MD...Metal members

Claims

1. An electrical connection unit comprising: an electronic component having a first terminal, a second terminal, and an insulating rib positioned between the first terminal and the second terminal when viewed from a first direction; a first cable member having a first mounting hole and fixed to the first terminal by a first fastening member inserted into the first mounting hole from the first direction; a second cable member having a second mounting hole and fixed to the second terminal by a second fastening member inserted into the second mounting hole from the first direction; a first metal part having a third mounting hole facing the first mounting hole and fastened together with the first cable member when the first fastening member is inserted into the third mounting hole; a second metal part having a fourth mounting hole facing the second mounting hole and fastened together with the second cable member when the second fastening member is inserted into the fourth mounting hole; and a holder member that integrally holds the first metal part and the second metal part and is attached to the insulating rib.

2. The electrical connection unit according to claim 1, wherein the holder member has an engaging portion that can be attached to the insulating rib from a second direction intersecting the first direction.

3. The electrical connection unit according to claim 1 or claim 2, further comprising a third metal portion facing the electronic component from a third direction intersecting the first direction, wherein the holder member integrally holds the first metal portion, the second metal portion, and the third metal portion.

4. The electrical connection unit according to claim 3, further comprising a heat transfer member provided between the third metal part and the electronic component.

5. The electrical connection unit according to claim 3, wherein the first metal part and the third metal part are formed from a single metal member.

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