Electrical connection unit

Abstract

One embodiment provides an electrical connection unit that can improve thermal characteristics and reduce costs. [Solution] An electrical connection unit according to one embodiment comprises an electronic component, a cable guide, a first metal plate, and a second metal plate. The electronic component has a terminal. The first metal plate includes a first portion and a second portion. The first portion is fixed to the terminal by a first fastening member. The second portion is bent from the first portion and fixed to the cable guide by a second fastening member. The second metal plate includes a third portion and a fourth portion. The third portion is placed on top of the first portion and fastened together to the terminal by the first fastening member. The fourth portion is bent from the third portion and placed on top of the second portion and fastened together to the cable guide by the second fastening member.

Description

Technical Field

[0001] Embodiments of the present invention relate to an electrical connection unit.

Background Art

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

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Improvement in thermal characteristics and cost reduction are expected for the electrical connection unit.

[0005] One embodiment provides an electrical connection unit capable of improving thermal characteristics and reducing costs.

Means for Solving the Problems

[0006] An electrical connection unit according to one embodiment has an electronic component, a wiring material, a first metal plate, and a second metal plate. The electronic component has terminals. The first metal plate includes a first portion and a second portion. The first portion is fixed to the terminals by a first fastening member. The second portion is bent from the first portion and fixed to the wiring material by a second fastening member. The second metal plate includes a third portion and a fourth portion. The third portion is disposed overlapping the first portion and co-fastened to the terminals by the first fastening member. The fourth portion is bent from the third portion and disposed overlapping the second portion and co-fastened to the wiring material by the second fastening member.

Effects of the Invention

[0007] According to one embodiment, it is possible to improve the thermal characteristics of the electrical connection unit and reduce costs. [Brief explanation of the drawing]

[0008] [Figure 1] A perspective view showing a partially disassembled electrical connection unit of the embodiment. [Figure 2] A perspective view illustrating the electronic components and connecting components of the embodiment. [Figure 3] A perspective view illustrating the busbar of an embodiment. [Figure 4] A perspective view illustrating a connecting component of the first embodiment of the model. [Figure 5] A cross-sectional view showing a part of an electrical connection unit according to the first embodiment of the model. [Figure 6] A plan view showing a part of an electrical connection unit according to the first embodiment of the model. [Figure 7] A cross-sectional view illustrating a modified example of the electrical connection unit according to the first embodiment. [Figure 8] A perspective view illustrating a first embodiment of a connecting component according to a second aspect of the embodiment. [Figure 9] A perspective view illustrating a second embodiment of a connecting component according to a second aspect of the embodiment. [Figure 10] A perspective view illustrating a third embodiment of the connecting component according to the second embodiment. [Figure 11] A perspective view illustrating a fourth embodiment of the connecting component according to the second embodiment. [Figure 12] A perspective view illustrating a fifth embodiment of the connecting component according to the second embodiment. [Figure 13] A perspective view illustrating a sixth embodiment of the connecting component according to the second embodiment. [Figure 14] A perspective view illustrating a seventh embodiment of a connecting component according to the second embodiment. [Figure 15] A perspective view illustrating an eighth embodiment of a connecting component according to the second aspect of the embodiment. [Figure 16] Perspective view for explaining the first embodiment of the connecting component according to the third aspect of the embodiment. [Figure 17] Perspective view showing a partial decomposition of the electrical connection unit according to the third aspect of the embodiment. [Figure 18] Plan view for explaining the first embodiment of the connecting component according to the third aspect of the embodiment. [Figure 19] Cross-sectional view for explaining the first embodiment of the connecting component according to the third aspect of the embodiment. [Figure 20] Perspective view for explaining the second embodiment of the connecting component according to the third aspect of the embodiment. [Figure 21] Cross-sectional view for explaining the second embodiment of the connecting component according to the third aspect of the embodiment. [Figure 22] Perspective view for explaining the third embodiment of the connecting component according to the third aspect of the embodiment. [Figure 23] Cross-sectional view for explaining the third embodiment of the connecting component according to the third aspect of the embodiment. [Figure 24] Perspective view for explaining the fourth embodiment of the connecting component according to the third aspect of the embodiment. [Figure 25] Cross-sectional view for explaining the fourth embodiment of the connecting component according to the third aspect of the embodiment.

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments will be described with reference to the drawings. In the following description, the same reference numerals are given to configurations having the same or similar functions. And duplicate descriptions of those configurations may be omitted. Note that the configurations 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," "overlapping," or "adjacent" means that the virtual projections of two objects overlap when viewed from a particular direction. For example, "Facing" or "overlapping" may include cases where two objects face each other, not just cases where two objects face each other with another member or gap between them. Also, "Facing" or "overlapping" may include cases where, when viewed from the above-mentioned particular direction, they overlap completely, not just cases where they overlap at least partially. "Adjacent" may include cases where two objects are adjacent, not just cases where two objects are side by side with another member or gap between them. "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 first end 11e1 to the second end 11e2 of the lower wall 11 of the housing 10 described later (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 (e.g., are orthogonal to) the X direction. The +Y direction is, for example, the direction from the third end 11e3 to the fourth end 11e4 of the lower wall 11 of the housing 10 described later (see Figure 1). 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 (e.g., are orthogonal to) the X direction and the Y direction. The +Z direction is the direction from the lower wall 11 of the housing 10 (described later) toward the main body MU (see Figure 1). The -Z direction is the opposite direction to the +Z direction. Hereafter, if the +Z direction and the -Z direction are not distinguished, they will simply be referred to as the "Z direction".

[0012] In the following, the X and Y directions may be referred to as the "horizontal direction" if they are not distinguished. 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 as "down." However, these expressions are for the sake 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] (Embodiment) <1. Configuration of the electrical connection unit> Figure 1 is a perspective view showing a partially disassembled electrical connection unit 1 of an embodiment. The electrical connection unit 1 is an in-vehicle device installed in vehicles such as EVs (Electric Vehicles), HEVs (Hybrid Electric Vehicles), or PHEVs (Plug-in Hybrid Electric Vehicles). The electrical connection unit 1 may also be referred to as an "electrical connection box" or "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 10 and a main body MU.

[0014] (Enclosure) The housing 10 is a component that forms the outer casing of the electrical connection unit 1. The housing 10 is, for example, a flat, box-shaped housing. The housing 10 is, for example, made of synthetic resin and has insulating properties. The housing 10 houses the main body MU. The housing 10 has, for example, a lower wall 11 (first wall), an upper wall 12 (second wall), and a peripheral wall 13 (third wall). The lower wall 11 covers at least a portion of the main body MU from below (-Z direction). The upper wall 12 covers at least a portion of the main body MU from above (+Z direction). The peripheral wall 13 surrounds the periphery of the main body MU.

[0015] The housing 10 includes, for example, a first member 10MA including a lower wall 11, and a second member 10MB including an upper wall 12 and a peripheral wall 13. In this embodiment, the housing 10 is formed by combining the first member 10MA and the second member 10MB. The lower wall 11 may be formed of an insulating sheet or the like instead of a rigid wall. Part or all of the housing 10 may be omitted.

[0016] (Main body) The main body MU is the part of the electrical connection unit 1 that performs the main function (e.g., switching of electrical connection states or overcurrent protection). The main body MU may also be referred to as a "circuit configuration". The main body MU includes, for example, a base member 15, a plurality of electronic components 20, a plurality of busbars 40, and a plurality of connection components 50.

[0017] <2. Base components> First, the base member 15 will be described. The base member 15 is a member that supports one or more electronic components 20 and / or one or more bus bars 40 inside the housing 10. The base member 15 is made of, for example, synthetic resin and has insulating properties. The base member 15 is positioned in the Z direction between the electronic components 20 and bus bars 40 and the lower wall 11 of the housing 10. The base member 15 is fixed to, for example, the lower wall 11 of the housing 10. The base member 15 supports one or more electronic components 20 and / or one or more bus bars 40 from below. The base member 15 may be a wall portion along the horizontal direction, or it may be a structure made up of multiple ribs standing upright in the vertical direction. The base member 15 may also be formed from a part of the housing 10.

[0018] <3. Electronic Components> Next, the electronic components 20 will be described. The electronic components 20 are electronic components mounted on the main unit MU according to the required functions. Examples of electronic components 20 include 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 in which two or more of these are unitized. However, the types of electronic components 20 are not limited to the above examples. Examples of electronic components 20 include heat-generating components that generate heat when energized.

[0019] Figure 2 is a perspective view illustrating the electronic component 20 and the connecting component 50. Figure 2 shows an example of the electronic component 20, which is an electronic component 20X. The electronic component 20X has, for example, a case 21, a component body 22, a plurality of terminals 23, and a plurality of mounting parts 24 (only one is shown in Figure 2).

[0020] (case) The case 21 is an outer enclosure member that forms the majority of the outer casing of the electronic component 20. The case 21 is made of, for example, synthetic resin and has insulating properties. The case 21 houses the component body 22. The case 21 and the component body 22 may be formed as a single unit.

[0021] (Main part of the component) The main body portion 22 of the component is responsible for the main function of the electronic component 20. For example, if the electronic component 20 is a relay, the main body portion 22 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 20 is a fuse, the main body portion 22 includes a fuse that melts when an overcurrent flows. For example, if the electronic component 20 is a capacitor, the main body portion 22 includes a portion that stores electric charge.

[0022] (Terminals) Terminal 23 is an electrical connection part exposed to the outside of the case 21. Terminal 23 is electrically connected to the component body 22 inside the case 21. In this embodiment, the electronic component 20 includes terminals 23, namely terminal 23A and terminal 23B. One of terminals 23A and terminal 23B is the positive terminal. The other of terminals 23A and terminal 23B is the negative terminal. One of terminals 23A and terminal 23B is an example of a "first terminal". The other of terminals 23A and terminal 23B is an example of a "second terminal".

[0023] In the example shown in Figure 2, terminals 23A and 23B are located at one end of the electronic component 20 in the horizontal direction (e.g., the X direction). Terminals 23A and 23B are arranged side by side in the horizontal direction (e.g., the Y direction). Each of terminals 23A and 23B faces horizontally (e.g., the X direction).

[0024] Each terminal 23 has a mounting hole 23h into which a fastening member 31 (e.g., a screw or bolt), described later, is inserted. The mounting hole 23h opens horizontally (e.g., in the -X direction). In this embodiment, the fastening member 31 is inserted into the mounting hole 23h from the X direction (e.g., from the -X direction side). The inner circumferential surface of the mounting hole 23h of the electronic component 20 has a screw groove. The mounting hole 23h is a bottomed engagement hole provided in the electronic component 20.

[0025] (Mounting part) The mounting portion 24 is a part for fixing the electronic component 20. The mounting portion 24 is superimposed from the Z direction on a fixing portion 16 (e.g., a boss, see Figure 5) provided on the base member 15. The mounting portion 24 has a mounting hole 24h into which a fastening member 29 (e.g., a screw or bolt) is inserted. The mounting hole 24h is open in the Z direction. The mounting portion 24 is attached to the base member 15 by fastening the fastening member 29 passed through the mounting hole 24h to the fixing portion 16 of the base member 15. The electronic component 20 is fixed to the base member 15 by the mounting portion 24 being attached to the base member 15.

[0026] <4. Busbar> Next, I will explain busbar 40. Figure 3 is a perspective view illustrating the busbar 40. The busbar 40 is a component that forms an electrical circuit in the electrical connection unit 1. Each of several busbars 40 extends between multiple electronic components 20, electrically connecting the multiple electronic components 20. Also, each of several other busbars 40 extends between the electronic components 20 and another component to be connected (e.g., an external busbar 49), electrically connecting the electronic components 20 and the component to be connected. The busbar 40 is an example of a "routing member". The busbar 40 may also be referred to as a "routing section". The multiple busbars 40 include, for example, a first busbar 40A and a second busbar 40B.

[0027] In this embodiment, the busbar 40 is formed in a plate shape along the horizontal direction. The busbar 40 extends in the X or Y direction. The busbar 40 is positioned away from the terminals 23 of the electronic component 20 in the Z direction.

[0028] In this embodiment, the busbar 40 is formed by stacking multiple (e.g., two) metal plates 41 in the Z direction. The metal plates 41 are plate-shaped and oriented horizontally. The thickness T3 (thickness in the Z direction, see Figure 5) of the metal plates 41 is, for example, 3 mm. The metal plates 41 are made of, for example, copper, copper alloy, aluminum, or aluminum alloy. Note that each busbar 40 may be formed from a single metal plate instead of being formed from stacked multiple metal plates 41.

[0029] <5. Connecting parts> Next, the connecting component 50 will be described. The connecting component 50 is a component for connecting the electronic component 20X and the bus bar 40. The connecting component 50 is placed between the electronic component 20X and the bus bar 40 and electrically connects the electronic component 20X and the bus bar 40. In this disclosure, "placed between the electronic component and the bus bar" is not limited to the case where it is located between the electronic component and the bus bar when viewed from the X or Y direction, but may also include the case where it is located between the electronic component and the bus bar when viewed from a direction inclined with respect to the horizontal direction.

[0030] In this embodiment, the electrical connection unit 1 has one or more of the following connection components 50: the connection component 50X of the first embodiment, the connection component 50Y of the second embodiment, or the connection component 50Z of the third embodiment. These connection components 50X, 50Y, and 50Z will be described in order below.

[0031] <6. Connecting parts of the first embodiment> <6.1 Overall configuration of connecting components in the first embodiment> First, let's describe the connecting component 50X of the first embodiment. Figure 4 is a perspective view illustrating the connecting component 50X of the first embodiment. The connecting component 50X of the first embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50X is formed by overlapping the first metal plate 60 and the second metal plate 70. The first metal plate 60 is formed, for example, by bending a single metal plate into an L-shape through a plastic deformation process such as press working. Similarly, the second metal plate 70 is formed, for example, by bending a single metal plate into an L-shape through a plastic deformation process such as press working.

[0032] Each of the first metal plate 60 and the second metal plate 70 is formed of, for example, copper, a copper alloy, aluminum, or an aluminum alloy. The first metal plate 60 and the second metal plate 70 are, for example, components of the same material. If the first metal plate 60 and the second metal plate 70 have the same thickness and material, they can be manufactured from a common material. In this case, it becomes easier to reduce the manufacturing cost of the electrical connection unit 1 (for example, the cost of procuring materials).

[0033] Alternatively, the first metal plate 60 and the second metal plate 70 may be made of different materials. For example, one of the first metal plate 60 and the second metal plate 70 may be made of copper or a copper alloy, and the other of the first metal plate 60 and the second metal plate 70 may be made of aluminum or an aluminum alloy. In this case, it becomes easier to achieve both high thermal conductivity and lightweight construction.

[0034] In this embodiment, the thickness T1 of the first metal plate 60 and the thickness T2 of the second metal plate 70 are the same (see Figure 5). The thickness T1 of the first metal plate 60 and the thickness T2 of the second metal plate 70 are, for example, 3 mm each. For example, if the thickness and material of the first metal plate 60 and the second metal plate 70 are the same as the thickness and material of the metal plate 41 of the busbar 40, then the metal plate 41, the first metal plate 60, and the second metal plate 70 can be manufactured from a common material. In this case, it becomes easier to further reduce the manufacturing cost of the electrical connection unit 1 (for example, the cost of procuring materials).

[0035] <6.2 First metal plate> Next, with reference to Figure 2, the details of the first metal plate 60 will be described. The first metal plate 60 includes a first portion 61 and a second portion 62.

[0036] (Part 1) The first portion 61 extends in the Z direction along the X-direction end of the electronic component 20X. The first portion 61 is plate-like along the Y and Z directions. The first portion 61 at least partially overlaps the electronic component 20 when viewed from the X direction. For example, the first portion 61 overlaps the terminal 23 of the electronic component 20X when viewed from the X direction.

[0037] The first part 61 has a mounting hole 61h. The mounting hole 61h is a through hole that penetrates the first part 61 in the X direction. The mounting hole 61h faces the terminal 23 of the electronic component 20X in the X direction. The mounting hole 61h does not have, for example, a screw thread. A fastening member 31 is inserted into the mounting hole 61h. The first part 61 is fixed to the terminal 23 of the electronic component 20X by the fastening member 31, which is passed through the mounting hole 61h, engaging with the mounting hole 23h of the terminal 23 of the electronic component 20X. In other words, the first part 61 is fixed to the terminal 23 of the electronic component 20X by the fastening member 31. The fastening member 31 is an example of the "first fastening member".

[0038] (Second part) The second portion 62 is bent from the -Z end of the first portion 61 toward the -X direction and extends along the X direction. The second portion 62 is plate-like along the X and Y directions. The second portion 62 extends along the busbar 40 (see Figure 4). The second portion 62 at least partially overlaps the busbar 40 when viewed from the Z direction (see Figure 4).

[0039] In this embodiment, a fastening member 43 is attached to the busbar 40. The fastening member 43 is, for example, a crimping bolt fixed to the busbar 40. In this embodiment, the busbar 40 has a through hole 40h (see Figure 5). The through hole 40h penetrates the busbar 40 in the Z direction. The fastening member 43 is passed through the through hole 40h of the busbar 40 and protrudes from the busbar 40 in the +Z direction.

[0040] The second portion 62 of the first metal plate 60 has a mounting hole 62h. The mounting hole 62h is a through hole that penetrates the second portion 62 in the Z direction. The mounting hole 62h does not have, for example, a screw thread. A fastening member 43 is inserted into the mounting hole 62h (see Figure 5). The second portion 62 is fixed to the bus bar 40 by the engagement of an engaging member 44 (for example, a nut) with the tip of the fastening member 43 that has passed through the mounting hole 62h (see Figure 5). In other words, the second portion 62 is fixed to the bus bar 40 by the fastening member 43. The fastening member 43 is an example of a "second fastening member".

[0041] (Arc section) At the boundary between the first part 61 and the second part 62, an arc portion 63 is formed by bending the second part 62 relative to the first part 61. The arc portion 63 is formed in the shape of an arc with a first radius of curvature.

[0042] <6.3 Second metal plate> Next, with reference to Figure 2, the details of the second metal plate 70 will be described. The second metal plate 70 includes a third portion 71 and a fourth portion 72.

[0043] (3rd part) The third portion 71 extends in the Z direction along the first portion 61 of the first metal plate 60. The third portion 71 is plate-shaped along the Y and Z directions. When viewed from the X direction, the third portion 71 overlaps with the electronic component 20 at least partially. For example, when viewed from the X direction, the third portion 71 overlaps with the terminal 23 of the electronic component 20X. The third portion 71 is positioned overlapping the first portion 61 of the first metal plate 60 from the opposite side of the electronic component 20X.

[0044] The third portion 71 has a mounting hole 71h. The mounting hole 71h is a through hole that penetrates the third portion 71 in the X direction. The mounting hole 71h communicates with the mounting hole 61h of the first metal plate 60 in the X direction and faces the terminal 23 of the electronic component 20X in the X direction. The mounting hole 71h does not have, for example, a screw thread. A fastening member 31 is inserted into the mounting hole 71h. The third portion 71 is fixed to the terminal 23 of the electronic component 20X by the fastening member 31 passing through the mounting hole 71h of the second metal plate 70 and the mounting hole 61h of the first metal plate 60 engaging with the mounting hole 23h of the terminal 23 of the electronic component 20X. In other words, the third portion 71 of the second metal plate 70 is fastened together with the first portion 61 of the first metal plate 60 to the terminal 23 of the electronic component 20X by the fastening member 31.

[0045] (Part 4) The fourth portion 72 is bent from the -Z end of the third portion 71 toward the -X direction and extends along the X direction. The fourth portion 72 is plate-like along the X and Y directions. The fourth portion 72 extends along the second portion 62 of the first metal plate 60 (see Figure 4). The fourth portion 72 at least partially overlaps the busbar 40 when viewed from the Z direction (see Figure 4). The fourth portion 72 is positioned overlapping the second portion 62 of the first metal plate 60 from the opposite side of the busbar 40.

[0046] The fourth portion 72 has a mounting hole 72h. The mounting hole 72h is a through hole that penetrates the fourth portion 72 in the Z direction. The mounting hole 72h does not have, for example, a screw thread. A fastening member 43 is inserted into the mounting hole 72h (see Figure 5). The fourth portion 72 is fixed to the busbar 40 by the engagement of an engaging member 44 (for example, a nut) with the tip of the fastening member 43 that passes through the mounting hole 62h of the first metal plate 60 and the mounting hole 72h of the second metal plate 70. In other words, the fourth portion 72 of the second metal plate 70 is fastened together with the second portion 62 of the first metal plate 60 to the busbar 40 by the fastening member 43.

[0047] (Arc section) At the boundary between the third portion 71 and the fourth portion 72, an arc portion 73 is formed by bending the fourth portion 72 relative to the third portion 71. The arc portion 73 is formed in the shape of an arc with a second radius of curvature. The second radius of curvature is smaller than, for example, the first radius of curvature of the arc portion 63 of the first metal plate 60. The arc portion 73 of the second metal plate 70 is positioned overlapping with the arc portion 63 of the first metal plate 60.

[0048] <6.4 Shape of the first and second metal plates> Figure 5 is a cross-sectional view showing a part of the electrical connection unit 1. The first portion 61 of the first metal plate 60 has a first end E1 located on the opposite side of the busbar 40. Similarly, the third portion 71 of the second metal plate 70 has a second end E2 located on the opposite side of the busbar 40. In this embodiment, the positions of the first end E1 and the second end E2 in the Z direction are the same.

[0049] Furthermore, the second portion 62 of the first metal plate 60 has a third end E3 located on the opposite side from the electronic component 20X. Similarly, the fourth portion 72 of the second metal plate 70 has a fourth end E4 located on the opposite side from the electronic component 20X. In this embodiment, the positions of the third end E3 and the fourth end E4 in the X direction are the same.

[0050] Figure 6 is a plan view showing a part of the electrical connection unit 1. In this embodiment, the length L21 in the X direction of the first metal plate 60 and the length L22 in the X direction of the second metal plate 70 are the same. Furthermore, each of the lengths L21 in the X direction of the first metal plate 60 and the length L22 in the X direction of the second metal plate 70 is smaller than the length L11 in the X direction of the electronic component 20X.

[0051] In this embodiment, the length (width) W21 of the first metal plate 60 in the Y direction and the length (width) W22 of the second metal plate 70 in the Y direction are the same. Furthermore, each of the length (width) W21 of the first metal plate 60 and the length (width) W22 of the second metal plate 70 in the Y direction is greater than half the width W11 of the electronic component 20X in the Y direction.

[0052] In this embodiment, each of the first metal plate 60 and the second metal plate 70 extends beyond the side surface 21s of the electronic component 20X in the Y direction. For example, the first portion 61 and the second portion 62 of the first metal plate 60 included in the first connecting component 50A, and the third portion 71 and the fourth portion 72 of the second metal plate 70 included in the first connecting component 50A, each extend in the +Y direction beyond the side surface 21s on the +Y direction side of the electronic component 20X. That is, the first portion 61 and the second portion 62 of the first metal plate 60 included in the first connecting component 50A, and the third portion 71 and the fourth portion 72 of the second metal plate 70 included in the first connecting component 50A, each protrude from the side surface 21s on the +Y direction side of the electronic component 20X toward the +Y direction.

[0053] On the other hand, the first portion 61 and the second portion 62 of the first metal plate 60 included in the second connecting component 50B, which will be described later, and the third portion 71 and the fourth portion 72 of the second metal plate 70 included in the second connecting component 50B, each extend in the -Y direction beyond the side surface 21s on the -Y direction side of the electronic component 20X. That is, the first portion 61 and the second portion 62 of the first metal plate 60 included in the second connecting component 50B, and the third portion 71 and the fourth portion 72 of the second metal plate 70 included in the second connecting component 50B, each protrude in the -Y direction from the side surface 21s on the -Y direction side of the electronic component 20X.

[0054] <6.5 Arrangement of Multiple Connecting Components> Next, with reference to Figure 4, the arrangement of the multiple connecting components 50 will be explained. In this embodiment, two connecting components 50 (first connecting component 50A and second connecting component 50B) are arranged for one electronic component 20X.

[0055] The first connecting component 50A is a connecting component that corresponds to terminal 23A of the electronic component 20X. The first metal plate 60 and the second metal plate 70 of the first connecting component 50A are fastened together to terminal 23A of the electronic component 20X by fastening member 31 (fastening member 31A). The first metal plate 60 and the second metal plate 70 of the first connecting component 50A are fastened together to the first bus bar 40A by fastening member 43 (fastening member 43A). With this configuration, the first connecting component 50A physically and electrically connects terminal 23A of the electronic component 20X to the first bus bar 40A.

[0056] The second connecting component 50B is positioned in the Y direction relative to the first connecting component 50A. For example, the second connecting component 50B is located on the -Y direction side relative to the first connecting component 50A. The second connecting component 50B is a connecting component corresponding to terminal 23B of the electronic component 20X. The first metal plate 60 and the second metal plate 70 of the second connecting component 50B are fastened together to terminal 23B of the electronic component 20X by fastening member 31 (fastening member 31B). The first metal plate 60 and the second metal plate 70 of the second connecting component 50B are fastened together to the second bus bar 40B by fastening member 43 (fastening member 43B). With this configuration, the second connecting component 50B physically and electrically connects terminal 23B of the electronic component 20X to the second bus bar 40B.

[0057] <6.6 Modifications of the First Embodiment> Next, a modified example of the connecting component 50X of the first embodiment will be described. Figure 7 is a cross-sectional view showing a modified part of the electrical connection unit 1 of the first embodiment. Here, depending on the material or thickness of the first metal plate 60 or the second metal plate 70, the radius of curvature of the arc portion 63 and the arc portion 73 may increase. Also, the fastening member 31 may increase in size in order to secure the clamping force for fixing the multiple metal plates 60, 70 to the electronic component 20X. In either of these cases, the distance between the arc portion 73 of the second metal plate 70 and the fastening member 31 decreases, and in some cases, the arc portion 73 of the second metal plate 70 and the fastening member 31 may interfere with each other.

[0058] Therefore, in this modified example, the lower surface BS2 of the connecting component 50X (the contact surface between the connecting component 50X and the busbar 40) is positioned below the lower surface BS1 of the electronic component 20X. With this configuration, the distance between the arc portion 73 of the second metal plate 70 and the fastening member 31 is increased, and interference between the arc portion 73 of the second metal plate 70 and the fastening member 31 can be suppressed even when the arc portion 73 is large and / or when the fastening member 31 is large.

[0059] <6.7 Advantages of the connecting component of the first embodiment> As a comparative example, consider the case where an L-shaped metal block (heat storage block) is used as a connecting component to connect electronic components and wiring materials in order to improve the thermal properties (e.g., heat storage and / or heat dissipation) of an electrical connection unit. Such metal blocks are generally forged products and are often expensive. Therefore, it is conceivable to use a bent metal sheet, which is cheaper than a forged product, as a connecting component to connect electronic components and wiring materials. However, there are limitations on the thickness of available metal sheets, and it may be difficult to ensure sufficient heat capacity.

[0060] In this embodiment, the connecting component (for example, connecting component 50) has a first metal plate (for example, first metal plate 60) and a second metal plate (for example, second metal plate 70). The first metal plate includes a first portion (for example, first portion 61) and a second portion (for example, second portion 62). The first portion is fixed to the terminal of an electronic component (for example, terminal 23A of electronic component 20X) by a first fastening member (for example, fastening member 31). The second portion is bent from the first portion and fixed to a cable guide (for example, bus bar 40) by a second fastening member (for example, fastening member 43). The second metal plate includes a third portion (for example, third portion 71) and a fourth portion (for example, fourth portion 72). The third portion is arranged in overlap with the first portion and fastened together to the terminal by the first fastening member. The fourth part is bent from the third part, placed on top of the second part, and fastened together with the cable material by the second fastening member.

[0061] With this configuration, a connecting component that links electronic components and wiring materials can be formed by stacking two metal plates. This configuration makes it easier to secure sufficient heat capacity while utilizing metal plates, which are less expensive than forged products. As a result, the thermal characteristics of the electrical connection unit (e.g., heat storage and / or heat dissipation) can be improved, and costs can be reduced.

[0062] In this embodiment, the terminal opens in a first direction. The cable guide is located away from the terminal in a second direction intersecting the first direction. The first portion of the first metal plate and the third portion of the second metal plate overlap at least partially with the electronic component when viewed from the first direction and extend in the second direction. The second portion of the first metal plate and the fourth portion of the second metal plate overlap at least partially with the cable guide when viewed from the second direction and extend in the first direction. With this configuration, in a configuration where the terminal of the electronic component and the cable guide are separated in a direction different from the opening direction of the terminal of the electronic component, a connecting component that connects the electronic component and the cable guide can be formed by stacking two metal plates.

[0063] In this embodiment, the first portion of the first metal plate has a first end (e.g., first end E1) located on the opposite side of the cable guide. The third portion of the second metal plate has a second end (e.g., second end E2) located on the opposite side of the cable guide. The positions of the first end and the second end in the second direction are the same. With this configuration, compared to the case where the first end and the second end are offset, it is possible to increase the heat capacity of the connecting component while miniaturizing the connecting component. This configuration makes it possible to miniaturize the electrical connection unit.

[0064] In this embodiment, the second portion of the first metal plate has a third end (e.g., third end E3) located on the opposite side of the electronic component. The fourth portion of the second metal plate has a fourth end (e.g., fourth end E4) located on the opposite side of the electronic component. The third end and the fourth end are in the same position in the first direction. With this configuration, compared to the case where the third end and the fourth end are offset, it is possible to increase the heat capacity of the connecting component while miniaturizing the connecting component. This configuration makes it possible to miniaturize the electrical connection unit.

[0065] In this embodiment, the first and second metal plates extend beyond the side surface (e.g., side surface 21s) of the electronic component in the third direction. This configuration makes it easier to secure a large heat capacity for the connecting component. This configuration allows for further improvement of the thermal characteristics of the electrical connection unit.

[0066] <7. Connecting parts of the second embodiment> Next, the connecting component 50Y of the second embodiment will be described. The connecting component 50Y of the second embodiment differs from the connecting component 50X of the first embodiment in that a bent portion is added to it. The configuration of the connecting component 50Y of the second embodiment, other than that described below, is the same as the configuration of the connecting component 50X of the first embodiment described above.

[0067] <7.1 First Embodiment of Connecting Parts in the Second Embodiment> Figure 8 is a perspective view illustrating a first embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the first embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0068] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the first embodiment, the horizontal (e.g., Y-direction) end of the first portion 61 has a bent portion 64. For example, the bent portion 64 included in the first connecting component 50A is bent from the +Y-direction end of the first portion 61 toward the +X-direction and extends along the X-direction. On the other hand, the bent portion 64 included in the second connecting component 50B is bent from the -Y-direction end of the first portion 61 toward the +X-direction and extends along the X-direction. The bent portion 64 is plate-like along the X-direction and Z-direction. The bent portion 64 extends along the side surface 21s of the electronic component 20X. In the example shown in Figure 8, the bent portion 64 is located near the electronic component 20X. When viewed from the Y-direction, the bent portion 64 at least partially overlaps with the electronic component 20X. The bent portion 64 is an example of the "first bent portion". The first portion 61 and the second portion 62 of the first metal plate 60 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment. In other words, the bent portion 64 is not limited to being located near the electronic component 20X, but may be located away from the vicinity of the electronic component 20X.

[0069] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the first embodiment, the horizontal (e.g., Y-direction) end of the third portion 71 has a bent portion 74. For example, the bent portion 74 included in the first connecting component 50A is bent from the +Y-direction end of the third portion 71 toward the +X-direction and extends along the X-direction. On the other hand, the bent portion 74 included in the second connecting component 50B is bent from the -Y-direction end of the third portion 71 toward the +X-direction and extends along the X-direction. That is, in the first embodiment, the bent portions 64 and 74 are bent in the same direction. The bent portions 74 are plate-shaped and oriented along the X-direction and Z-direction. In the example shown in Figure 8, the bent portion 74 is located near the electronic component 20X. The bent portion 74 of the second metal plate 70 overlaps with the bent portion 64 of the first metal plate 60 from the opposite side of the electronic component 20Y. The bent portion 74 is an example of a "second bent portion". The third portion 71 and the fourth portion 72 of the second metal plate 70 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment. In other words, the bent portion 74 is not limited to being located near the electronic component 20X, but may be located away from the vicinity of the electronic component 20X.

[0070] <7.2 Second Embodiment of the Connecting Part of the Second Embodiment> Figure 9 is a perspective view illustrating a second embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the second embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0071] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the second embodiment, the horizontal (e.g., Y-direction) end of the first portion 61 has a bent portion 64, similar to the first embodiment. For example, the bent portion 64 included in the first connecting component 50A is bent from the +Y-direction end of the first portion 61 toward the +X-direction and extends along the X-direction. On the other hand, the bent portion 64 included in the second connecting component 50B is bent from the -Y-direction end of the first portion 61 toward the +X-direction and extends along the X-direction. The bent portion 64 extends along the side surface 21s of the electronic component 20X. In the example shown in Figure 9, the bent portion 64 is located near the electronic component 20X. The bent portion 64 is an example of a "first bent portion". Furthermore, the first portion 61 of the first metal plate 60 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment. In other words, the bent portion 64 is not limited to being located near the electronic component 20X, but may be located away from the vicinity of the electronic component 20X.

[0072] In this embodiment, the second portion 62 extends beyond the bent portion 64 in the Y direction, away from the electronic component 20X. For example, the second portion 62 included in the first connecting component 50A extends beyond the bent portion 64 in the +Y direction. On the other hand, the second portion 62 included in the second connecting component 50B extends beyond the bent portion 64 in the -Y direction. Alternatively, the second portion 62 does not have to extend beyond the bent portion 64 in the Y direction. The length (width) of the second portion 62 in the Y direction may be the same as the length (width) of the first portion 61 in the Y direction.

[0073] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the second example of the connecting component 50Y, the bent portion 74 is not provided. The second metal plate 70 has the same shape as the second metal plate 70 in the first embodiment described above.

[0074] In this embodiment, the third portion 71 of the second metal plate 70 extends beyond the bent portion 64 in the Y direction, which is the direction away from the electronic component 20X. For example, the third portion 71 included in the first connecting component 50A extends beyond the bent portion 64 in the +Y direction. On the other hand, the third portion 71 included in the second connecting component 50B extends beyond the bent portion 64 in the -Y direction. That is, the third portion 71 of the second metal plate 70 includes a portion that does not overlap with the first metal plate 60. With this configuration, the heat dissipation area exposed to the air in the connecting component 50Y is increased.

[0075] Similarly, the fourth portion 72 of the second metal plate 70 extends beyond the bent portion 64 in the Y direction, which is away from the electronic component 20X. For example, the fourth portion 72 included in the first connecting component 50A extends beyond the bent portion 64 in the +Y direction. On the other hand, the fourth portion 72 included in the second connecting component 50B extends beyond the bent portion 64 in the -Y direction.

[0076] In addition, the second metal plate 70 does not have to extend beyond the bent portion 64 in the Y direction. The length (width) of the second metal plate 70 in the Y direction may be the same as the length (width) of the first portion 61 of the first metal plate 60 in the Y direction.

[0077] <7.3 Third Embodiment of the Connecting Part of the Second Embodiment> Figure 10 is a perspective view illustrating a third embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the third embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0078] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the third embodiment, the bent portion 64 is not provided. The first metal plate 60 has the same shape as the first metal plate 60 of the first embodiment described above.

[0079] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the third embodiment, the horizontal (e.g., Y-direction) end of the third portion 71 has a bent portion 74, similar to the first embodiment. For example, the bent portion 74 included in the first connecting part 50A is bent from the +Y-direction end of the third portion 71 toward the +X-direction and extends along the X-direction. On the other hand, the bent portion 74 included in the second connecting part 50B is bent from the -Y-direction end of the third portion 71 toward the +X-direction and extends along the X-direction. The bent portion 74 is an example of a "first bent portion".

[0080] <7.4 Fourth Embodiment of the Connecting Part of the Second Embodiment> Figure 11 is a perspective view illustrating a fourth embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the fourth embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0081] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the fourth embodiment, the horizontal (e.g., Y direction) end of the first portion 61 has a bent portion 64. For example, the bent portion 64 included in the first connecting component 50A is bent from the +Y direction end of the first portion 61 toward the -X direction and extends along the X direction. On the other hand, the bent portion 64 included in the second connecting component 50B is bent from the -Y direction end of the first portion 61 toward the -X direction and extends along the X direction. The bent portion 64 is plate-shaped along the X and Z directions. When viewed from the Y direction, the bent portion 64 at least partially overlaps with the fastening member 31. The bent portion 64 is an example of a "first bent portion". Furthermore, the first portion 61 and the second portion 62 of the first metal plate 60 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment.

[0082] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the fourth embodiment, the horizontal (e.g., Y-direction) end of the third portion 71 has a bent portion 74. For example, the bent portion 74 included in the first connecting component 50A is bent from the +Y-direction end of the third portion 71 toward the -X-direction and extends along the X-direction. On the other hand, the bent portion 74 included in the second connecting component 50B is bent from the -Y-direction end of the third portion 71 toward the -X-direction and extends along the X-direction. That is, in the fourth embodiment, the bent portions 64 and 74 are bent in the same direction. The bent portions 74 are plate-shaped and oriented along the X-direction and Z-direction. The bent portion 74 of the second metal plate 70 overlaps with the bent portion 64 of the first metal plate 60 from the side opposite to the fastening member 31. The bent portion 74 is an example of a "second bent portion". Furthermore, the third portion 71 and the fourth portion 72 of the second metal plate 70 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment.

[0083] <7.5 Fifth Embodiment of the Connecting Part of the Second Embodiment> Figure 12 is a perspective view illustrating a fifth embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the fifth embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0084] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the fifth embodiment of the connecting component 50Y, the bent portion 64 is not provided. The first metal plate 60 has the same shape as the first metal plate 60 of the first embodiment described above.

[0085] In this embodiment, the first portion 61 of the first metal plate 60 extends beyond the bent portion 74 of the second metal plate 70 in the Y direction, which is the direction away from the electronic component 20X. For example, the first portion 61 included in the first connecting component 50A extends beyond the bent portion 74 of the second metal plate 70 in the +Y direction. On the other hand, the first portion 61 included in the second connecting component 50B extends beyond the bent portion 74 of the second metal plate 70 in the -Y direction. That is, the first portion 61 of the first metal plate 60 includes a portion that does not overlap with the second metal plate 70. With this configuration, the heat dissipation area exposed to air in the connecting component 50Y is increased.

[0086] Similarly, the second portion 62 of the first metal plate 60 extends beyond the bent portion 74 of the second metal plate 70 in the Y direction, which is away from the electronic component 20X. For example, the second portion 62 included in the first connecting component 50A extends beyond the bent portion 74 of the second metal plate 70 in the +Y direction. On the other hand, the second portion 62 included in the second connecting component 50B extends beyond the bent portion 74 of the second metal plate 70 in the -Y direction.

[0087] Alternatively, the first metal plate 60 does not have to extend beyond the bent portion 74 of the second metal plate 70 in the Y direction. The length (width) of the first metal plate 60 in the Y direction may be the same as the length (width) of the third portion 71 of the second metal plate 70 in the Y direction.

[0088] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the fifth embodiment, the horizontal (e.g., Y-direction) end of the third portion 71 has a bent portion 74. For example, the bent portion 74 included in the first connecting component 50A is bent from the +Y-direction end of the third portion 71 toward the -X-direction and extends along the X-direction. On the other hand, the bent portion 74 included in the second connecting component 50B is bent from the -Y-direction end of the third portion 71 toward the -X-direction and extends along the X-direction. The bent portion 74 is plate-shaped along the X-direction and Z-direction. The bent portion 74 is an example of the "first bent portion". The third portion 71 of the second metal plate 70 may extend beyond the side surface 21s of the electronic component 20X in the Y-direction, similar to the connecting component 50X of the first embodiment.

[0089] In this embodiment, the fourth portion 72 extends beyond the bent portion 74 in the Y direction, away from the electronic component 20X. For example, the fourth portion 72 included in the first connecting component 50A extends beyond the bent portion 74 in the +Y direction. On the other hand, the fourth portion 72 included in the second connecting component 50B extends beyond the bent portion 74 in the -Y direction. Alternatively, the fourth portion 72 does not have to extend beyond the bent portion 74 in the Y direction. The length (width) of the fourth portion 72 in the Y direction may be the same as the length (width) of the third portion 71 in the Y direction.

[0090] <7.6 Sixth Embodiment of the Connecting Part of the Second Embodiment> Figure 13 is a perspective view illustrating a sixth embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the sixth embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0091] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the sixth embodiment, the horizontal (e.g., Y direction) end of the first portion 61 has a bent portion 64. For example, the bent portion 64 included in the first connecting component 50A is bent from the +Y direction end of the first portion 61 toward the +X direction and extends along the X direction. On the other hand, the bent portion 64 included in the second connecting component 50B is bent from the -Y direction end of the first portion 61 toward the +X direction and extends along the X direction. The bent portion 64 is plate-shaped along the X and Z directions. The bent portion 64 extends along the side surface of the electronic component 20X. When viewed from the Y direction, the bent portion 64 at least partially overlaps with the electronic component 20X. The bent portion 64 is an example of a "first bent portion".

[0092] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the fourth embodiment, the horizontal (e.g., Y direction) end of the third portion 71 has a bent portion 74. For example, the bent portion 74 included in the first connecting part 50A is bent from the +Y direction end of the third portion 71 toward the -X direction and extends along the X direction. On the other hand, the bent portion 74 included in the second connecting part 50B is bent from the -Y direction end of the third portion 71 toward the -X direction and extends along the X direction. That is, in the fourth embodiment, the bent portions 64 and 74 are bent in different directions (e.g., opposite directions). The bent portion 74 is plate-shaped along the X and Z directions. The bent portion 74 is an example of a "second bent portion".

[0093] Furthermore, each of the first metal plate 60 and the second metal plate 70 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment. In other words, the bent portion 64 is not limited to being located near the electronic component 20X, but may be located away from the vicinity of the electronic component 20X.

[0094] <7.7 Seventh Embodiment of the Connecting Part of the Second Embodiment> Figure 14 is a perspective view illustrating a seventh embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the seventh embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0095] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the seventh embodiment, the vertical (e.g., Z-direction) end of the first portion 61 has a bent portion 64. The bent portion 64 is bent from the +Z-direction end of the first portion 61 toward the +X-direction and extends along the X-direction. The bent portion 64 is plate-like along the X-direction and Y-direction. The bent portion 64 extends along the upper surface of the electronic component 20X. When viewed from the Z-direction, the bent portion 64 at least partially overlaps the electronic component 20X. The bent portion 64 is an example of a “first bent portion”.

[0096] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the seventh embodiment, the vertical (e.g., Z-direction) end of the third portion 71 has a bent portion 74. The bent portion 74 is bent from the +Z-direction end of the third portion 71 toward the +X-direction and extends along the X-direction. That is, in the seventh embodiment, the bent portion 64 and the bent portion 74 are bent in the same direction. The bent portion 74 is plate-like along the X-direction and Y-direction. The bent portion 74 of the second metal plate 70 overlaps with the bent portion 64 of the first metal plate 60 from the side opposite to the electronic component 20X. The bent portion 74 is an example of a "second bent portion".

[0097] Furthermore, each of the first metal plate 60 and the second metal plate 70 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment. For example, the bent portion 64 and the bent portion 74 may extend beyond the side surface 21s of the electronic component 20X in the Y direction. Also, the connecting component 50Y is not limited to having both the bent portion 64 and the bent portion 74, but may have only one of the bent portion 64 and the bent portion 74.

[0098] <7.8 Eighth Embodiment of the Connecting Part of the Second Embodiment> Figure 15 is a perspective view illustrating an eighth embodiment of the connecting component 50Y of the second embodiment. The connecting component 50Y of the eighth embodiment includes a first metal plate 60 and a second metal plate 70. The connecting component 50Y is formed by overlapping the first metal plate 60 and the second metal plate 70.

[0099] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62. In the eighth embodiment, the vertical (e.g., Z-direction) end of the first portion 61 has a bent portion 64. The bent portion 64 is bent from the +Z-direction end of the first portion 61 toward the +X-direction and extends along the X-direction. The bent portion 64 is plate-like along the X-direction and Y-direction. The bent portion 64 extends along the upper surface of the electronic component 20X. When viewed from the Z-direction, the bent portion 64 at least partially overlaps the electronic component 20X. The bent portion 64 is an example of a “first bent portion”.

[0100] (Second metal plate) The second metal plate 70 includes a third portion 71 and a fourth portion 72. In the eighth embodiment, the vertical (e.g., Z-direction) end of the third portion 71 has a bent portion 74. The bent portion 74 is bent from the +Z-direction end of the third portion 71 toward the -X-direction and extends along the X-direction. That is, in the eighth embodiment, the bent portion 64 and the bent portion 74 are bent in different directions (e.g., opposite directions). The bent portion 74 is plate-like along the X-direction and Y-direction. The bent portion 74 is an example of a "second bent portion".

[0101] Furthermore, each of the first metal plate 60 and the second metal plate 70 may extend beyond the side surface 21s of the electronic component 20X in the Y direction, similar to the connecting component 50X in the first embodiment. For example, the bent portion 64 and the bent portion 74 may extend beyond the side surface 21s of the electronic component 20X in the Y direction. Also, the connecting component 50Y is not limited to having both the bent portion 64 and the bent portion 74, but may have only one of the bent portion 64 and the bent portion 74.

[0102] <7.9 Advantages of the connecting component of the second embodiment> As a comparative example, consider a connecting component in which two L-shaped metal plates are stacked. For example, consider a connecting component in which the bent portions 64 and 74 do not exist, as shown in Figure 8. Such a connecting component has room for improvement in terms of thermal properties (heat storage and / or heat dissipation).

[0103] In this embodiment, the end of the first metal plate (e.g., the first metal plate 60) or the end of the second metal plate (e.g., the second metal plate 70) has a first bent portion (e.g., a bent portion 64 or a bent portion 74). With this configuration, in the first view, a larger heat capacity can be secured compared to a metal plate without a first bent portion, thereby improving the thermal properties (e.g., heat storage capacity) of the connecting component. In the second view, the presence of a first bent portion separated from another metal plate ensures a larger heat dissipation area exposed to the air compared to a structure in which two L-shaped metal plates are stacked so that they perfectly coincide, thereby improving the thermal properties (e.g., heat dissipation capacity) of the connecting component. Through the action of at least one of these first or second views, the thermal properties of the electrical connection unit can be improved.

[0104] In some embodiments, the end of the first metal plate has a first bent portion (e.g., bent portion 64). The end of the second metal plate has a second bent portion (e.g., bent portion 74). With such a configuration, a larger heat capacity can be secured compared to a configuration in which only one of the first or second metal plate has a bent portion, and the thermal properties (e.g., heat storage capacity) of the connecting component can be improved.

[0105] In some embodiments, the second bent portion is arranged to overlap with the first bent portion. With this configuration, compared to the case where the first bent portion and the second bent portion are bent in different directions, it is possible to miniaturize the connecting parts and / or improve assembly.

[0106] In some embodiments, the second bent portion is bent in a different direction from the first bent portion. With such a configuration, compared to a configuration in which the first and second bent portions are arranged on top of each other, the heat dissipation area exposed to the air can be increased, making it easier to improve the thermal properties (e.g., heat dissipation) of the connecting components.

[0107] In some embodiments, the first portion of the first metal plate and the third portion of the second metal plate overlap the electronic component at least partially when viewed from a first direction. The first bent portion overlaps the electronic component at least partially when viewed from a second direction different from the first direction. With such a configuration, the connecting components can be housed around the electronic component, making it easier to miniaturize the electrical connection unit.

[0108] <8. Connecting parts of the third embodiment> Next, the connecting component 50Z of the third embodiment will be described. The connecting component 50Z of the third embodiment differs from the connecting component 50X of the first embodiment in that the second metal plate 80 is fitted into the first metal plate 60. The configuration of the connecting component 50Z of the third embodiment, other than that described below, is the same as the configuration of the connecting component 50X of the first embodiment described above.

[0109] <8.1 First Embodiment of a Connecting Part in a Third Embodiment> Figure 16 is a perspective view illustrating a first embodiment of the connecting component 50Z of the third embodiment. The connecting component 50Z of the first embodiment includes a first metal plate 60 and a second metal plate 80. The connecting component 50Z is formed by overlapping the first metal plate 60 and the second metal plate 80.

[0110] (1st metal plate) The first metal plate 60 includes a first portion 61 and a second portion 62, similar to the first metal plate 60 of the connecting component 50X in the first embodiment. In this embodiment, the second portion 62 of the first metal plate 60 is fixed to the bus bar 40 without using a fastening member 43. For example, the second portion 62 of the first metal plate 60 is fixed to the bus bar 40 by welding or riveting. In the case of welding, for example, the second portion 62 of the first metal plate 60 is fixed to the bus bar 40 by laser welding. In the case of riveting, for example, a fixing hole is provided in the bus bar 40, and a part of the second portion 62 of the first metal plate 60 is pressed into the hole by press working or the like, thereby fixing the second portion 62 of the first metal plate 60 to the bus bar 40. The first metal plate 60 is an example of the "first metal member". Note that the "first metal member" may be a member formed by forging, casting, or machining instead of a metal plate.

[0111] (Second metal plate) The second metal plate 80 is a metal plate that is attached to the second portion 62 of the first metal plate 60 by fitting. The second metal plate 80 has a recess 80g into which the second portion 62 of the first metal plate 60 fits. The second metal plate 80 is attached to the second portion 62 of the first metal plate 60 by the second portion 62 fitting into the recess 80g. The second metal plate 80 is an example of a "second metal member". Note that the "second metal member" may be a member formed by forging, casting, or machining instead of a metal plate.

[0112] In this embodiment, the second metal plate 80 includes a base portion 81, a first bent portion 82, and a second bent portion 83. The base portion 81 is plate-shaped and oriented along the X and Y directions. The base portion 81 faces the second portion 62 of the first metal plate 60 from the side opposite to the busbar 40. The base portion 81 has a first end portion 81e1 which is the end on the +Y direction side and a second end portion 81e2 which is the end on the -Y direction side. The second end portion 81e2 is the end opposite to the first end portion 81e1 in the Y direction.

[0113] The first bent portion 82 is the portion bent from the first end 81e1 of the base portion 81 toward the -Z direction. The first bent portion 82 extends in the X direction along the side surface (first side surface) of the second portion 62 of the first metal plate 60. The first bent portion 82 is in contact with the first side surface of the second portion 62 of the first metal plate 60 from the +Y direction side.

[0114] The second bent portion 83 is the portion bent from the second end 81e2 of the base portion 81 toward the -Z direction. The second bent portion 83 extends in the X direction along the side surface (second side surface) of the second portion 62 of the first metal plate 60. The second bent portion 83 is located on the opposite side of the second portion 62 of the first metal plate 60 from the first bent portion 82. The second bent portion 83 is in contact with the second side surface of the second portion 62 of the first metal plate 60 from the -Y direction side.

[0115] In this embodiment, the recess 80g described above is formed between the first bent portion 82 and the second bent portion 83. In this embodiment, the second portion 62 of the first metal plate 60 is sandwiched between the first bent portion 82 and the second bent portion 83 by inserting the second portion 62 of the first metal plate 60 into the recess 80g. With this structure, the second metal plate 80 is fixed to the second portion 62 of the first metal plate 60. In this embodiment, the second metal plate 80 is placed on top of the second portion 62 of the first metal plate 60 from the side opposite to the busbar 40. The base portion 81 of the second metal plate 80 is in contact with the second portion 62 of the first metal plate 60 from the side opposite to the busbar 40.

[0116] In this embodiment, the second metal plate 80 has a base portion 81, a first bent portion 82, and a second bent portion 83, which are formed by bending, for example, by press working. In this embodiment, the thickness T1 of the first metal plate 60 and the thickness T2 of the second metal plate 80 are the same (see Figure 19). The thickness T1 of the first metal plate 60 and the thickness T2 of the second metal plate 80 are, for example, 3 mm each. For example, if the thickness and material of the first metal plate 60 and the second metal plate 80 are the same as the thickness and material of the metal plate 41 of the busbar 40, then the metal plate 41, the first metal plate 60, and the second metal plate 80 can be manufactured from a common material. In this case, it becomes easier to further reduce the manufacturing cost of the electrical connection unit 1 (for example, the cost of procuring materials).

[0117] Figure 17 is a perspective view showing a partially disassembled electrical connection unit of the third embodiment. Figure 18 is a plan view showing a part of the electrical connection unit of the third embodiment. In this embodiment, the second portion 62 of the first metal plate 60 has a first notch 62c1 and a second notch 62c2.

[0118] The first notch 62c1 is provided at the +Y direction end of the second portion 62 of the first metal plate 60. The width of the first notch 62c1 in the Y direction is, for example, the same as the width of the first bent portion 82 of the second metal plate 80 in the Y direction. The first notch 62c1 extends in the X direction. The first bent portion 82 of the second metal plate 80 is positioned in the first notch 62c1.

[0119] The second notch 62c2 is provided at the -Y direction end of the second portion 62 of the first metal plate 60. The width of the second notch 62c2 in the Y direction is, for example, the same as the width of the second bent portion 83 of the second metal plate 80 in the Y direction. The second notch 62c2 extends in the X direction. The second bent portion 83 of the second metal plate 80 is positioned in the second notch 62c2.

[0120] Figure 19 is a cross-sectional view showing a part of the electrical connection unit 1 in a third embodiment. In this embodiment, the width W32 in the Y direction of the second portion 62 of the first metal plate 60 is smaller than the width W31 in the Y direction of the first portion 61 of the first metal plate 60. With this configuration, even if the second metal plate 80 is attached to the second portion 62 of the first metal plate 60, it is easy to secure a gap (insulation distance) between the second metal plate 80 of the first connecting component 50A and the second metal plate 80 of the second connecting component 50B.

[0121] <8.2 Second Embodiment of the Connecting Part of the Third Embodiment> Figure 20 is a perspective view illustrating a second embodiment of the connecting component 50Z of the third embodiment. The connecting component 50Z of the second embodiment includes a first metal plate 60 and a second metal plate 80. The connecting component 50Z is formed by overlapping the first metal plate 60 and the second metal plate 80.

[0122] In this embodiment, the second portion 62 of the first metal plate 60 is fixed to the busbar 40 by a fastening member 43, similar to the connecting component 50X in the first embodiment. The fastening member 43 protrudes in the +Z direction from the second portion 62 of the first metal plate 60.

[0123] In this embodiment, the base portion 81 of the second metal plate 80 has an opening 81h into which the fastening member 43 and the engaging member 44 are inserted. The outer shape of the opening 81h is larger than that of the fastening member 43 and the engaging member 44 when viewed from the Z direction. Because the opening 81h is provided, the base portion 81 of the second metal plate 80 is arranged to overlap with the second portion 62 of the first metal plate 60 to avoid interference with the fastening member 43 and the engaging member 44. The opening 81h is an example of an "insertion portion". Note that the "insertion portion" is not limited to the opening 81h, but may also be a notch provided in the base portion 81, etc.

[0124] Figure 21 is a cross-sectional view showing a part of the electrical connection unit according to the third embodiment. In this embodiment, the base 81 of the second metal plate 80 is positioned overlapping the second portion 62 of the first metal plate 60 from the opposite side of the busbar 40. The base 81 of the second metal plate 80 contacts the second portion 62 of the first metal plate 60 from the opposite side of the busbar 40, in a position that avoids the fastening member 43 and the engaging member 44.

[0125] <8.3 Third Embodiment of the Connecting Part of the Third Embodiment> Figure 22 is a perspective view illustrating a third embodiment of the connecting component 50Z of the third embodiment. The connecting component 50Z of the third embodiment includes a first metal plate 60 and a second metal plate 80. The connecting component 50Z is formed by overlapping the first metal plate 60 and the second metal plate 80.

[0126] In this embodiment, the second portion 62 of the first metal plate 60 is fixed to the busbar 40 by a fastening member 43, similar to the connecting component 50X in the first embodiment. The fastening member 43 protrudes in the +Z direction from the second portion 62 of the first metal plate 60.

[0127] In this embodiment, the base 81 of the second metal plate 80 is located on the opposite side of the busbar 40 from the second portion 62 of the first metal plate 60. The base 81 of the second metal plate 80 is positioned away from the second portion 62 of the first metal plate 60 in the +Z direction. A gap S1 in the Z direction is provided between the base 81 of the second metal plate 80 and the second portion 62 of the first metal plate 60. The gap S1 is a space that accommodates part of the fastening member 43 and the engaging member 44.

[0128] Figure 23 is a cross-sectional view showing a part of the electrical connection unit according to the third embodiment. As described above, a gap S1 in the Z direction is provided between the base 81 of the second metal plate 80 and the second portion 62 of the first metal plate 60. By providing the gap S1, interference between the base 81 of the second metal plate 80 and the fastening member 43 and the engaging member 44 is avoided. A heat transfer member 91 may be provided in the gap S1 to thermally connect the base 81 of the second metal plate 80 and the second portion 62 of the first metal plate 60. The heat transfer member 91 is, for example, a member made of a material with better thermal conductivity than the base member 15. The heat transfer member 91 is, for example, an elastic insulating member.

[0129] <8.4 Fourth Embodiment of the Connecting Part of the Third Embodiment> Figure 24 is a perspective view illustrating a fourth embodiment of the connecting component 50Z of the third embodiment. The connecting component 50Z of the fourth embodiment includes a first metal plate 60 and a second metal plate 80. The connecting component 50Z is formed by overlapping the first metal plate 60 and the second metal plate 80.

[0130] In this embodiment, a base portion 81 (first base portion 81A) corresponding to the first connecting component 50A and a base portion 81 (second base portion 81B) corresponding to the second connecting component 50B are formed from a single second metal plate 80. For example, the second metal plate 80 includes the first base portion 81A, the second base portion 81B, a first bent portion 82, a second bent portion 83, and an insulating portion 84.

[0131] Each of the first base portion 81A and the second base portion 81B is plate-shaped and oriented along the X and Y directions. The first base portion 81A faces the second portion 62 of the first metal plate 60 of the first connecting component 50A from the side opposite to the busbar 40A. The second base portion 81B faces the second portion 62 of the first metal plate 60 of the second connecting component 50B from the side opposite to the busbar 40B.

[0132] The first bent portion 82 is a portion of the second metal plate 80 that is bent from the +Y direction end toward the -Z direction. The first bent portion 82 is in contact with the first side surface (the side surface in the +Y direction) of the second portion 62 of the first metal plate 60 of the first connecting part 50A from the +Y direction side.

[0133] The second bent portion 83 is the portion of the second metal plate 80 that is bent from the -Y direction end toward the -Z direction. The second bent portion 83 is in contact with the second side surface (the side surface in the -Y direction) of the second portion 62 of the first metal plate 60 of the second connecting part 50B from the -Y direction side.

[0134] The insulating portion 84 is positioned between the first base portion 81A and the second base portion 81B, electrically insulating the first base portion 81A from the second base portion 81B. The insulating portion 84 is made of, for example, synthetic resin. In this embodiment, a metal plate including the first base portion 81A and the first bent portion 82, a metal plate including the second base portion 81B and the second bent portion 83, and the insulating portion 84 are integrally formed by insert molding or the like.

[0135] Figure 25 is a cross-sectional view showing a part of an electrical connection unit according to a third embodiment. In this embodiment, the second metal plate 80 is attached to the second portion 62 of the first metal plate 60 of the first connecting component 50A and the second portion 62 of the first metal plate 60 of the second connecting component 50B by fitting. The second metal plate 80 has a recess 80g into which the second portion 62 of the first metal plate 60 of the first connecting component 50A and the second portion 62 of the first metal plate 60 of the second connecting component 50B fit. The second metal plate 80 is attached to the second portion 62 of the first metal plate 60 by the second portion 62 of the first metal plate 60 of the first connecting component 50A and the second portion 62 of the first metal plate 60 of the second connecting component 50B fit into the recess 80g.

[0136] The second metal plate 80 in the fourth embodiment is not limited to the above example. The second metal plate 80 in the fourth embodiment may have an opening 81h, similar to the second embodiment, or it may form a gap S1 between itself and the second portion 62 of the first metal plate 60, similar to the third embodiment.

[0137] <8.5 Advantages of the connecting component of the third embodiment> As a comparative example, consider a connecting component that does not have a second metal component (e.g., a second metal plate 80). Such a connecting component has room for improvement in terms of thermal properties (e.g., heat storage and / or heat dissipation). Also, when adding a metal component with thermal properties by fastening it together with other components, the fastening component may become larger in order to ensure sufficient fastening force to fasten multiple components.

[0138] In this embodiment, the second metal member (for example, the second metal plate 80) has a recess (for example, a recess 80g) into which the second portion of the first metal member (for example, the second portion 62 of the first metal plate 60) fits. The second metal member is attached to the second portion of the first metal member.

[0139] With this configuration, the presence of a second metal member in addition to the first metal member improves the thermal properties of the connecting components (e.g., heat storage and / or heat dissipation). This configuration improves the thermal properties of the electrical connection unit (e.g., heat storage and / or heat dissipation). Furthermore, with this configuration, since the first and second metal members are not fixed to the cable material by fastening together, the size of the fastening members can be suppressed. This configuration allows for miniaturization and / or cost reduction of the electrical connection unit compared to a structure in which the first and second metal members are fastened together to the cable material.

[0140] In this embodiment, the first metal member is a metal plate having a base (e.g., base 81), a first bent portion (e.g., first bent portion 82) bent from the first end of the base, and a second bent portion (e.g., second bent portion 83) bent from the second end of the base opposite to the first end, forming the recess between it and the first bent portion. With this configuration, the second metal member can be formed from a metal plate. In this case, the cost of the electrical connection unit can be reduced compared to when the second metal member is a forged product.

[0141] In at least one embodiment, the second portion is fixed to the wiring member (e.g., bus bar 40) by welding or crimping. The second metal member is positioned on top of the second portion from the opposite side of the wiring member. This configuration makes it easier to position the second metal member near the first metal component and to improve thermal conductivity between the second metal member and the first metal component. This configuration allows for further improvement of the thermal properties of the electrical connection unit.

[0142] In at least one embodiment, the second portion is fixed to the cable member by a second fastening member. The metal member has an insertion portion (e.g., an opening 81h) through which the second fastening member passes. With this configuration, the second metal member can be easily positioned near the first metal component, and the thermal conductivity between the second metal member and the first metal component can be easily improved. This makes it possible to further improve the thermal characteristics of the electrical connection unit.

[0143] In at least one embodiment, the second portion is fixed to the cable member by a second fastening member (e.g., fastening member 43). The second metal member has a base located on the opposite side of the cable member from the second portion, and is attached to the second portion with a gap (e.g., gap S1) between the second portion and the base that accommodates a part of the second fastening member. With this configuration, the second metal member can be positioned while avoiding interference with the fastening member. In addition, the presence of the gap can increase the heat dissipation area of ​​the connecting component.

[0144] Several embodiments and variations have been described above. However, the embodiments and variations are not limited to the examples described above. For example, the connecting parts 50 of the first to third embodiments described above may be implemented by combining them with each other. Also, each variation of the first to third embodiments described above may be implemented by combining them with each other. [Explanation of Symbols]

[0145] 1…Electrical connection unit 20, 20X, 20A, 20B… Electronic components 31…Fastening member (first fastening member) 40... Bus bar (rope material) 43…Fastening member (second fastening member) 44…Engaging member 50, 50X, 50Y, 50Z… Connecting parts 60…First metal plate (first metal component) 61…Part 1 61h…Mounting holes 62…Second part 62h…Mounting holes 70…Second metal plate 71...Third part 71h…Mounting holes 72...4th part 72h…Mounting holes 80...Second metal plate (second metal component) 80g…Groove 81...Base 81h...Opening (insertion part) 82...1st bending part 83…Second bending part S1... Gap

Claims

1. An electronic component having terminals, Cable rigging materials, A first metal plate comprising a first portion fixed to the terminal by a first fastening member, and a second portion bent from the first portion and fixed to the cable material by a second fastening member, A second metal plate comprising a third portion which is positioned overlapping with the first portion and fastened together with the terminal by the first fastening member, and a fourth portion which is bent from the third portion, positioned overlapping with the second portion and fastened together with the cable material by the second fastening member, An electrical connection unit equipped with [a specific feature].

2. The terminal is open in the first direction, The aforementioned cable material is arranged away from the terminal in a second direction intersecting the first direction. The first portion of the first metal plate and the third portion of the second metal plate overlap at least partially with the electronic component when viewed from the first direction and extend in the second direction. The second portion of the first metal plate and the fourth portion of the second metal plate overlap at least partially with the cable material when viewed from the second direction and extend in the first direction. The electrical connection unit according to claim 1.

3. The first portion of the first metal plate has a first end located on the opposite side from the cable guide, The third portion of the second metal plate has a second end located on the opposite side from the cable guide, The positions of the first end and the second end in the second direction are the same. The electrical connection unit according to claim 2.

4. The second portion of the first metal plate has a third end located on the opposite side from the electronic component, The fourth portion of the second metal plate has a fourth end located on the opposite side from the electronic component, The positions of the third end and the fourth end in the first direction are the same. The electrical connection unit according to claim 3.

5. If the third direction is the direction that intersects the first and second directions, The first metal plate and the second metal plate extend beyond the side surface of the electronic component in the third direction. An electrical connection unit according to any one of claims 2 to 4.

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