ELECTRICAL CONNECTION UNIT

Abstract

An electrical connection unit comprises a rigid element, an electronic component with a movable section, a busbar electrically connected to the electronic component, a base element with a first base section having a first surface facing the electronic component and a second surface located on one side opposite the first surface and facing the rigid element and holding the busbar, a first connecting section attached to the rigid element, and a cushioning element arranged between the rigid element and the base element or between the rigid element and the busbar, and positioned between the electronic component and the first fixing section when viewed from a cutting direction intersecting the first surface.

Description

[Technical field]

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

[0002] An electrical connection unit with a housing that accommodates electronic components and a busbar that is vertically attached to the housing is known. [State of the art document][Patent document]

[0003] [Patent document 1] Japanese unexamined patent application, first publication no. 2024-037492 [Description of the invention][Problems to be solved by the invention]

[0004] In an electrical connection unit, it is expected that the noise emission generated by a relay or similar device that has a moving part will be suppressed and the smoothness of operation will be improved.

[0005] One embodiment provides an electrical connection unit that is able to improve smooth running. [Means of solving the problem]

[0006] An electrical connection unit according to one embodiment comprises a rigid element, an electronic component having a movable section, a busbar electrically connected to the electronic component, a base element having a first base section having a first surface facing the electronic component and a second surface located on a side opposite the first surface and facing the rigid element, and holding the busbar, a first fixing section attached to the rigid element, and a cushioning element arranged between the rigid element and the base element or between the rigid element and the busbar, and arranged between the electronic component and the first fixing section when viewed from a sectioning direction intersecting the first surface. [Effects of the invention]

[0007] According to one embodiment, the smoothness of operation can be improved. [Brief description of the drawings] [ Fig. 1] A cross-sectional view showing an electrical connection unit of one embodiment. [ Fig. 2] A perspective view to describe a main body of the embodiment. [ Fig. 3] A partially separated perspective view of a connecting unit of the embodiment. [ Fig. 4] A partially separated perspective view of a subunit of the embodiment. [ Fig. 5] A perspective view to describe an electronic component and a connecting component of the embodiment. [ Fig. 6] A perspective view showing a laying board of the embodiment. [ Fig. 7] A partially separated perspective view of the installation board of the embodiment. [ Fig. 8] A floor view showing the installation board of the embodiment. [ Fig. 9] A cross-sectional view along line IX-IX of the structure, shown in Fig. 2. [Embodiments of the invention]

[0008] The following descriptions illustrate embodiments with reference to the drawings. In the following description, assemblies with the same or similar functions are named using the same reference numerals. Redundant descriptions of these assemblies may be omitted. Note that the assembly described below does not limit the scope of the embodiment.

[0009] In the present disclosure, the terms are defined as follows. The term "connection" is not limited to a mechanical connection and can also include an electrical connection. That is, the term "connection" is not limited to the case where two elements that are the targets of the connection are directly connected to each other, but can also include the case where two elements that are the targets of the connection are electrically or mechanically connected to each other and another element lies between them. The term "receiving" is not limited to the case where the entire component is received, but can also include the case where only a part of the component is received (a state in which the remaining part of the component protrudes). The term "facing" indicates that the virtual projection images of two target objects overlap when viewed from a certain direction.This means that the term "facing" is not limited to the case where two target objects are directly facing each other, but can also include the case where two target objects are facing each other in a state in which another element is located between them. "Orthogonal" can encompass a case of "essentially orthogonal." "Equal" can encompass the case of "essentially equal."

[0010] In the present disclosure, a +X direction, a -X direction, a +Y direction, a -Y direction, a +Z direction, and a -Z direction are defined as follows. As in the Fig. As shown in Figures 1 to 3, the +X direction is a direction from a first end 80e1 to a second end 80e2 of the metal plate 80, which will be described later. The -X direction is a direction opposite to the +X direction. If the +X and -X directions are not distinguished, the directions will be referred to simply as the "X direction" in the following. The +Y direction and the -Y direction are directions that intersect the X direction (for example, orthogonal to it). The +Y direction is a direction from a third end 80e3 to a fourth end 80e4 of the metal plate 80, which will be described later. The -Y direction is a direction opposite to the +Y direction. If the +Y and -Y directions are not distinguished, the directions will be referred to simply as the "Y direction" in the following. The +Z direction and the -Z direction are directions that intersect with the X direction and the Y direction (for example, orthogonal to them).The +Z direction is a direction from the metal plate 80, which will be described later, to a main body MU. The -Z direction is a direction opposite to the +Z direction. When the +Z and -Z directions are not distinguished, the directions are simply referred to as the "Z direction" in the following. The Z direction is an example of a "first direction" or a "cutting direction." The X direction is an example of a "second direction." The "second direction" is not limited to the X direction but can also be the Y direction or other directions.

[0011] If the X and Y directions are not distinguished, the directions can be referred to as the "horizontal direction" in the following. The Z direction can be referred to as the "vertical direction" in the following. The side in the +Z direction can be referred to as "top" and the side in the -Z direction as "bottom". However, these terms are descriptive and do not define a gravity direction of an electrical connection unit 1 (an installation position of the electrical connection unit 1). (Design)<1. Structure of the electrical connection unit>

[0012] The electrical connection unit 1 is, for example, an in-vehicle device attached to a vehicle such as an electric vehicle (EV), a hybrid electric vehicle (HEV), or a plug-in hybrid electric vehicle (PHEV). The electrical connection unit 1 may be referred to, for example, as an "electrical junction box" or "junction box." However, the electrical connection unit 1 is not limited to a box-shaped device.

[0013] The electrical connection unit 1, for example, comprises a main body MU, a metal plate 80, an insulating film 91, a plurality of heat transfer elements 92, an insulating cover 93 and a plurality of cushioning elements 94. <2nd main body>

[0014] First, the main body MU is described.

[0015] The main body MU is a section that performs a main function (for example, switching electrical connection states or overcurrent protection) of the electrical connection unit 1. In the present embodiment, the main body MU is divided into a plurality of subunits SU. The main body MU is formed by connecting a plurality of subunits SU. In the present embodiment, the main body MU contains three subunits SU (subunits SUX, SUY, and SUZ). Each subunit SU can be referred to as a "circuit assembly body".

[0016] The subunit SUX has a primary electrical function. For example, the subunit SUX contains a plurality of electronic components 10X and a distribution board 40X. The majority of the electronic components 10X are electrically connected to the distribution board 40X.

[0017] The subunit SUY has a secondary electrical function. This secondary function differs from the primary function. For example, the subunit SUY contains a plurality of electronic components 10Y and a distribution board 40Y. The majority of the electronic components 10Y are electrically connected to the distribution board 40Y.

[0018] The subunit SUZ has a third electrical function. This third function differs from the first and second functions. For example, the subunit SUZ contains a plurality of electronic components 10Z and a routing board 40Z. The majority of the electronic components 10Z are electrically connected to the routing board 40Z.

[0019] In the present embodiment, the three subunits SUX, SUY, and SUZ are arranged such that they lie in the X-direction. For example, subunit SUX is located on the +X-direction side relative to subunit SUY. Subunits SUX and SUY are electrically connected. Subunit SUZ, on the other hand, is located on the -X-direction side relative to subunit SUY. Subunits SUZ and SUY are electrically connected.

[0020] In the present embodiment, the three routing boards 40X, 40Y, and 40Z, contained in the three subunits SUX, SUY, and SUZ, are arranged in the same plane. In other words, the three routing boards 40X, 40Y, and 40Z are arranged at the same height in the Z-direction. In this way, a large routing board 40M is formed from the three routing boards 40X, 40Y, and 40Z.

[0021] In the present embodiment, the three subunits SUX, SUY, and SUZ have the same or a similar basic structure. One subunit, SU, is described in detail below as a representative of this basic structure. If the subunits SUX, SUY, and SUZ are not distinguished, they are referred to simply as "subunit SU." Similarly, if the electronic components 10X, 10Y, and 10Z are not distinguished, they are referred to simply as "electronic component 10." Finally, if the routing board 40X, 40Y, and 40Z are not distinguished, they are referred to simply as "routing board 40."

[0022] Note that the main body MU need not be subdivided into a plurality of subunits SU, as in the example described above. That is, the main body MU can be formed from a plurality of electronic components 10 and a distribution board 40. Furthermore, the two or more subunits SU are not limited to subunits SU with different functions, but can also be subunits SU with the same function. <3. Subunit Structure>

[0023] Next, the structure of the subunit SU will be described.

[0024] Fig. Figure 4 is a partially disassembled perspective view of subunit SU. Subunit SU includes, for example, a plurality of electronic components 10, a plurality of connection components 20 for connecting components, and a routing board 40. Each connection component 20 is an element that forms a power supply path in the vertical direction. Each connection component 20 can be referred to as a "vertical routing element." The routing board 40 includes, for example, a base plate 41, one or more (for example, a plurality of) busbars 42, and a plurality of fasteners 43. <3.1 Electronic component and connection component for connecting components>

[0025] The multitude of electronic components 10 and the multitude of connection components 20 for connecting the components are described.

[0026] The numerous electronic components 10 are electronic components mounted according to the functions required for the sub-unit SU. Electronic component 10 is, for example, a relay (e.g., a mechanical relay) and is a heat-generating component that produces heat when energized. Each connecting component 20 is a component that electrically connects the electronic component 10 to the distribution board 40. The connecting component 20 forms part of a power supply path in the sub-unit SU. The connecting component 20 is made of a metal (e.g., copper or a copper alloy). The connecting component 20 can be referred to as a "metal component." Other electronic components (e.g., a connector, a fuse, a capacitor, a branch component, various sensors, etc.)(A current sensor or a voltage sensor), an electronic control unit, or an electronic component unit in which two or more of these components are combined) can also be mounted on the subunit SU as electronic component 10. It should be noted that electronic component 10 and the corresponding connecting component 20 are described in detail below. <3.1.1 Electronic Component>

[0027] Fig. Figure 5 is a perspective view depicting the electronic component 10. The electronic component 10 is an electronic component that generates operating noise. The electronic component 10 includes, for example, a housing 11, a component body 12, a plurality of terminals 13, and a plurality of mounting sections 14. The plurality of terminals 13 are, for example, arranged such that they are located at one end of the electronic component 10. (Housing)

[0028] The housing 11 is an outer element that forms most of the outer shape of the electronic component 10. The housing 11 is made of, for example, synthetic resin and has insulating properties. The housing 11 contains the component body 12. The housing 11 and the component body 12 can be formed from a single piece.

[0029] In the present embodiment, the housing 11 has an insulating rib 11a that projects horizontally (for example, in the X-direction) and extends in the Z-direction. The insulating rib 11a has, for example, a plate-like shape formed horizontally (for example, in the X-direction) and in the Z-direction. The insulating rib 11a extends, for example, over the entire length of the housing 11 in the Z-direction. The insulating rib 11a is arranged between the plurality of terminals 13 (a terminal 13A and a terminal 13B, which will be described later). The insulating rib 11a electrically isolates terminal 13A from terminal 13B. In the present embodiment, a portion of the insulating rib 11a is arranged between the first sections 21 (described later) of the two connecting sections 20 that are connected to the electronic component 10.The insulating rib 11a provides electrical insulation between the first sections 21 of the two connecting components 20, which are connected to the electronic component 10. (Component body)

[0030] The component body 12 is a section that performs a main function of the electronic component 10. The component body 12 has a braking section 16 and a movable section 17. The braking section 16, for example, has a coil that generates a magnetic field through a coil current applied to the electronic component 10. The movable section 17 has, for example, a movable contact that moves according to a magnetic field generated by the braking section 16 and switches between a conducting and a non-conducting state. (Connection)

[0031] Terminal 13 is an electrical connection section exposed to the outside of the housing 11. Terminal 13 is electrically connected to the component body 12 inside the housing 11. In the present embodiment, the electronic component 10 includes one terminal 13A and one terminal 13B as the plurality of terminals 13. One of the terminals 13A and 13B is a terminal on the positive electrode side. The other of the terminals 13A and 13B is a terminal on the negative electrode side. One of the terminals 13A and 13B is an example of a "first terminal." The other of the terminals 13A and 13B is an example of a "second terminal."

[0032] In the present embodiment, terminal 13A and terminal 13B are provided at one end of the electronic component 10 in a horizontal direction (e.g., in the X-direction). Terminal 13A and terminal 13B are arranged such that they lie in the horizontal direction (e.g., in the Y-direction). Each terminal 13 has a mounting hole 13h to which a fastening element 71 (e.g., a screw or a bolt), which will be described later, is attached. The mounting hole 13h is open in the horizontal direction (e.g., in the X-direction). An inner circumferential surface of the mounting hole 13h of the electronic component 10 has a groove for the screw. (Fortification section)

[0033] The mounting section 14 is a section for fixing the electronic component 10. The mounting section 14 has a mounting opening 14h to which a fastening element 112 (e.g. a screw or a bolt; see below) described later can be attached. Fig. 3) is attached. The mounting hole 14h is open in the Z-direction. Mounting hole 14h is an insertion hole through which the fastening element 112 passes. The mounting section 14 is attached to the metal plate 80. <3.1.2 Connection component>

[0034] The connecting component 20 is a component that electrically connects the electronic component 10 to the routing board 40. In the present embodiment, the connecting component 20 electrically connects the electronic component 10 to the busbar 42, which is present in the routing board 40. In the present embodiment, a width L12 of the connecting component 20 in the longitudinal direction (for example, in the X-direction) of the electronic component 10 is smaller than a width L11 of the electronic component 10 in the longitudinal direction. The connecting component 20 includes, for example, a first section 21 and a second section 22. (First section)

[0035] The first section 21 of the connecting component 20 is a section connected to the terminal 13 of the electronic component 10. The first section 21 is a plate-shaped or rectangular parallelepiped section extending in the Z-direction. The first section 21 extends in the Z-direction along one end (for example, an end in the X-direction) of the electronic component 10. The first section 21 is a vertical section oriented in the Z-direction with respect to the routing board 40 (for example, with respect to a busbar 42, which will be described later). The first section 21 is horizontally adjacent (for example, in the X-direction) to the electronic component 10.For example, the first section 21 borders the terminal 13 of the electronic component 10 in a horizontal direction (for example, in the X direction) and is connected to the terminal 13 of the electronic component 10 in a horizontal direction (for example, in the X direction).

[0036] The first section 21 of the connecting component 20 has a first mounting hole 21h through which the fastening element 71 (for example, a screw or a bolt) passes. The first mounting hole 21h is open in the horizontal direction (for example, in the X direction). The first section 21 has a recess 25 around the first mounting hole 21h. The recess 25 is a receiving section that receives a head of the fastening element 71 that has been inserted into the first mounting hole 21h. The fastening element 71, which passes through the first mounting hole 21h, is connected to the mounting hole 13h of the terminal 13 of the electronic component 10, so that the first section 21 is physically and electrically connected to the terminal 13 of the electronic component 10. The first section 21 need not have the recess 25. (Second Section)

[0037] The second connecting section 22 of the connecting component 20 is a section connected to the busbar 42. The second section 22 projects horizontally (for example, in the X-direction) from the end of the first section 21 on the -Z-direction side. The second section 22 is a plate section provided in a horizontal direction. The second section 22 borders the busbar 42 in the Z-direction and is connected to the busbar 42 in the Z-direction. The second section 22 of the connecting component 20 is attached to the fastening element 43 (for example, a screw or a bolt; see Fig. 4) is attached, projecting from the busbar 42 in the +Z direction from the Z direction, and is physically and electrically connected to the busbar 42. In the present embodiment, the second section 22 of the connecting component 20 has a second mounting hole 22h through which the fastening element 43 passes. The second mounting hole 22h is open in the Z direction. In the second section 22, the fastening element 43 passes through the second mounting hole 22h. The coupling element 44 (e.g., a nut) engages the tip of the fastening element 43, which has passed through the second mounting hole 22h, and thus the second section 22 is fastened to the busbar 42. In the present embodiment, the first section 21 and the second section 22 form an L-shaped connecting component 20. <3.2 Installation board>

[0038] Next, the routing board 40 will be described.

[0039] Fig. Figure 6 is a perspective view depicting the routing board 40. The routing board 40 is an element that forms at least part of a power supply path between the plurality of electronic components 10 and / or at least part of a power supply path between the electronic component 10 and another electronic component and / or at least part of a power supply path between the electronic component 10 and an external device. In the present disclosure, the “routing board” denotes a board-like routing structure. The term “board-like” denotes a plate-like shape along a plane when viewed as a whole, irrespective of any fine detail.In the present disclosure, the term "plate-shaped," "sheet-shaped," or "flat" shape is not limited to the case where it is completely flat and may include a case in which a fixing structure, a rib, or the like, projecting in the Z-direction, is partially present, a case in which a non-uniform shape, following the thickness of the busbar, is present on the surface, and the like. In the present embodiment, the routing board 40 has a plate-shaped form in the X and Y directions.

[0040] In the present embodiment, the base plate 41 and the majority of the busbars 42 are integrated by insert forming. For example, the busbar 40 is formed as a single element by insert forming the busbar 42 with the base plate 41 after the fastening element 43 has been fixed to the busbar 42. That is, the busbar 42 is integrated with the base plate 41 without the use of a fastening element such as a screw or bolt. Note that the busbar 40 can also be formed by a different structure instead of by insert forming. A modification example in which the busbar 40 is formed by a different structure is described later.

[0041] Fig. Figure 7 is a partially separated perspective view of the routing board 40. For the sake of simplicity, the base plate 41, the busbar 42 and the fastening element 43 are described below with reference to the drawings in which the routing board 40 is partially separated. (Base plate)

[0042] The base plate 41 is a retaining element that holds the majority of the busbars 42, arranged horizontally at intervals, in one piece. The base plate 41 is made, for example, of synthetic resin and has insulating properties. The base plate 41 electrically insulates the majority of the busbars 42 from each other. The base plate 41 is an example of a "base element." The base plate 41 can also be referred to as an "insulating substrate." The base plate 41 has, for example, a first flat surface section 51 and a plurality of first fixing sections 52. The first flat surface section 51 is an example of a first base section. The first fixing section 52 will be described later.

[0043] The first flat surface section 51 is a plate-shaped section in the base plate 41. The first flat surface section 51 has a plate-like shape that is horizontally oriented. The first flat surface section 51 forms a base section of the base plate 41. In the present embodiment, the first flat surface section 51 extends over the entire width of the base plate 41 in the X direction and over the entire width of the base plate 41 in the Y direction, with the exception of the four corner sections of the base plate 41.

[0044] The first flat surface section 51 has a first surface 51a and a second surface 51b. The first surface 51a is a surface oriented in the +Z direction. The first surface 51a is a flat surface provided in the horizontal direction. The first surface 51a faces the majority of electronic components 10 and is adjacent to the insulating cover 93 (see Fig. 1) facing the electrical connection unit 1. The second surface 51b is located on the side opposite the first surface 51a. The second surface 51b is a surface oriented in the -Z direction. The second surface 51b is a flat surface provided in the horizontal direction. The second surface 51b faces the metal plate 80 (see Fig. 1) The thickness direction (plate thickness direction) of the first flat surface section 51 is the Z-direction.

[0045] The first flat surface section 51 has, for example, one or more (e.g., a plurality of) receiving sections 55, in which the busbars 42 are each housed. The plurality of receiving sections 55 are spaced apart from one another in the X or Y direction. Each of the receiving sections 55 is, for example, a through-opening that penetrates the first flat surface section 51 in the Z direction. It should be noted that the receiving opening 55 can be a recess provided in the first surface 51a or the second surface 51b of the first flat surface section 51 and cut out in the Z direction, instead of a through-opening.In the present disclosure, the phrase “the receiving section penetrates the flat surface section in the first direction (Z-direction)” may include a case in which part of the total length of the receiving section 55 penetrates the first flat surface section 51 in the Z-direction (for example, the remaining portion of the receiving section 55 may be a recessed in the Z-direction or be provided within the plate 41 and not be open to the outside of the plate 41).Similarly, in the present disclosure, the phrase “the receiving section is recessed in the first direction (Z-direction)” may include a case in which part of the total length of the receiving section 55 is recessed in the Z-direction (for example, a remaining portion of the receiving section 55 may be a through-opening that penetrates the first planar surface section 51 in the Z-direction, or it may be provided within the base plate 41 and not be exposed to the outside of the base plate 41).

[0046] Each receiving section 55 has an outer shape which, viewed from the Z-direction, corresponds to the shape of the busbar 42 to be received. Each receiving section 55 receives a corresponding busbar 42. (Busbar)

[0047] The busbar 42 is a routing element (electrical connection element) contained in the routing board 40. The busbar 42 is, for example, a routing element for electrically connecting the plurality of electronic components 10 to one another or for electrically connecting the electronic component 10 to another electronic component. Alternatively, the busbar 42 can also be a routing element for connecting the electronic component 10 to an external device. The busbar 42 is made of a metal (for example, copper or a copper alloy) and is conductive. In the present embodiment, the plurality of busbars 42 are arranged such that they are spaced apart in the horizontal direction. The plurality of busbars have sections that are arranged in the same plane.The multitude of busbars 42 are held by the first flat surface section 51 of the base plate 41.

[0048] At least a portion of each busbar 42 has a plate-like shape extending horizontally. At least a portion of each busbar 42 is housed in the receiving section 55 and extends along the first surface section 51. That is, at least a portion of each busbar 42 extends along the first surface 51a of the first flat surface section 51. At least a portion of each busbar 42 extends horizontally within the receiving section 55. In the present embodiment, each busbar 42 has a plate-like shape extending horizontally over its entire length. Each busbar 42 is housed in the receiving section 55 over its entire length and extends along the first flat surface section 51.Subsequently, a section of each busbar 42, housed in the receiving section 55 and extending along the first flat surface section 51, can be referred to as the "plate section 42p". The busbar 42 is an element that forms a horizontal power supply path. The busbar 42 can also be referred to as the "horizontal routing element".

[0049] Fig. Figure 8 is a top view showing the routing board 40. The board section 42p of each busbar 42 has, for example, a connecting section 61 and an extending section 63.

[0050] The connecting section 61 is a section that is in contact with a connecting component 20. The connecting component 20 is a connecting component that connects an electronic component 10 to the busbar 42. The connecting section 61 is a section of the busbar 42 that overlaps the connecting component 20 when viewed from the Z-direction. The connecting section 61 borders the connecting component 20 in the Z-direction and is connected to the connecting component 20 in the Z-direction.

[0051] The extending section 63 extends from the connecting section 61 in the X-direction or in the Y-direction. The extending section 63 can, for example, be located between the connecting section 61 and another connecting section. For example, the extending section 63 can extend over the connecting section 61 and another connecting section. The extending section 63 can, for example, connect the connecting section 61 to another connecting section.

[0052] In the present embodiment, the connecting section 61 and the extending section 63 have a plate shape formed in the horizontal direction. In the present embodiment, each of the busbars 42 is housed in the receiving section 55 and extends along the first flat surface section 51. For example, the connecting section 61 and the extending section 63 are housed in the receiving section 55 and extend along the first flat surface section 51.

[0053] In the present embodiment, the extending sections 63 of some busbars 42 are housed in the receiving sections 55. That is, the busbar 42 is received in the receiving section 55 in such a way that it can easily be guided along a better path (for example, a path with a shorter distance) without being interfered with by the presence of the electronic component 10. (fastening element)

[0054] Fastening element 43 is a component for fixing the busbar 42 and the connecting component 20, which is a connection target component of the busbar 42. Fastening element 43 is, for example, a crimping bolt fixed to the busbar 42. Fastening element 43 is an example of a "fastening section".

[0055] As in Fig. As shown in Figure 7, in the present embodiment, the connecting section 61 of each busbar 42 has a through-hole 42h. The through-hole 42h penetrates the busbar 42 in the Z-direction. The fastening element 43 is, for example, a bolt with a shank 43a and a head 43b. A circumferential surface of the shank 43a has a groove for the screw. The diameter of the head 43b is larger than the diameter of the shank 43a. The head 43b of the fastening element 43 is riveted and fixed to the busbar 42 in such a way that the shank 43a passes through the through-hole 42h of the busbar 42. With this fixing, the fastening element 43 is electrically and physically connected to the busbar 42, in a state in which the shaft 43a protrudes from the through hole 42h of the busbar 42 in the +Z direction.The fastening element 43 is not limited to fixing by riveting, but can also be fixed to the busbar 42 by welding or other methods.

[0056] In the present embodiment, the connecting component 20, having previously been fixed to the electronic component 10 via the fastening element 71, is attached in the Z-direction to the fastening element 43. For example, in the case of the connecting component 20, the shaft 43a of the fastening element 43 is inserted into the second fastening hole 22h of the second section 22. Then the coupling element 44 (e.g., a nut; see Fig. 9) engage in the shaft 43a of the fastening element 43, which protrudes from the second fastening hole 22h of the second connecting section 22 of the connecting component 20. The coupling element 44 is, for example, attached to the shaft 43a in the Z-direction. This coupling secures the second section 22 of the connecting component 20 to the fastening element 43. <4. Metal plate>

[0057] Next, a design of the metal plate 80 will be described.

[0058] The metal plate 80 is an element for ensuring the rigidity of the electrical connection unit 1 and for improving its heat dissipation properties. The metal plate 80 is made of a metal (for example, aluminum or an aluminum alloy). The metal plate 80 can, for example, have a higher rigidity than the insulating foil 91. The metal plate 80 can also be referred to as a "rigid element".

[0059] As in the Fig. As shown in Figures 1 to 3, the metal plate 80 has one long side extending in the X direction from the Z direction and a rectangular shape in the horizontal direction. The metal plate 80 has a first end 80e1, a second end 80e2, a third end 80e3, and a fourth end 80e4. The first end 80e1 and the second end 80e2 are a pair of longitudinal ends of the metal plate 80 separated in the X direction. The third end 80e3 and the fourth end 80e4 are a pair of lateral ends of the metal plate 80 separated in the Y direction. The metal plate 80 has, for example, a second flat surface section 81, a plurality of second fixing sections 82, and a plurality of third fixing sections 83. The second flat surface section 81 is an example of a second basic section.

[0060] The second flat surface section 81 is a plate-shaped section of the metal plate 80. The second flat surface section 81 has a plate shape that is horizontally oriented. The second flat surface 81 forms a main part of the plate 80. The second flat surface section 81 forms a base section (metal base section) of the metal plate 80. In the present embodiment, the second flat surface section 81 is large enough to cover the three subunits SU from below. The second flat surface section 81 faces the mounting plates 40 of the three subunits SU. In the present embodiment, the metal plate 80 forms a gap S1 (see Fig. 1), which has the insulating film 91 between the metal plate 80 and the second surface 51b of the first flat surface section 51 of each subunit SU and faces the second surface 51b of the first flat surface section 51 of each subunit SU.

[0061] The plurality of second fixing sections 82 are fixing sections for fixing the base plate 41 of each subunit SU to the metal plate 80. The plurality of second fixing sections 82 are provided at positions corresponding to the first fixing sections 52 of the base plate 41 of each subunit SU as viewed in the Z-direction. Each of the second fixing sections 82 is a cylindrical or prismatic projection that extends in the +Z direction from the second flat surface section 81 of the metal plate 80. Each of the second fixing sections 82 will be described in detail later.

[0062] The plurality of third fixing sections 83 are fixing sections for directly attaching the electronic component 10 of each subunit SU to the metal plate 80 without interposing the base plate 41. The plurality of third fixing sections 83 are provided at positions corresponding to the mounting sections 14 of the electronic components 10 of each subunit SU as viewed in the Z-direction. Each of the third fixing sections 83 is a cylindrical or prismatic projection extending from the second flat surface section 81 in the +Z direction. Each of the third fixing sections 83 will be described in detail later. <5. Insulating foil>

[0063] Next, a design of the insulating film 91 will be described.

[0064] The insulating foil 91 is an insulator for the electrical insulation of the metal plate 80 and the busbar 42 of each subunit SU. The insulating foil 91 consists, for example, of a synthetic resin such as polyester or polyimide and has insulating properties. Viewed from the Z-direction, the insulating foil 91 has a rectangular shape. The insulating foil 91 has a sheet-like shape formed in the horizontal direction. The insulating foil 91 is arranged between the second flat surface section 81 of the metal plate 80 and the busbar 40 of each subunit SU. For example, the insulating foil 91 can be arranged between the second flat surface section 81 of the metal plate 80 and the plurality of heat transfer elements 92. For example, the insulating foil 91 can be arranged between the second flat surface section 81 of the metal plate 80 and the plurality of cushioning elements 94.

[0065] In the present embodiment, the insulating film 91 is glued to the second flat surface section 81 of the metal plate 80. The insulating film 91 has a notch or opening to bypass the second fixing section 82 and the third fixing section 83 of the plate 80. Note that instead of the above example, the insulating film 91 can also be provided between the routing board 40 of each subunit SU and the plurality of heat transfer elements 92. In a case where the plurality of heat transfer elements 92 and the plurality of cushioning elements 94 have insulating properties, and the required insulating properties are ensured by the plurality of heat transfer elements 92 and the plurality of cushioning elements 94, the insulating film 91 can be omitted. <6. Heat transfer element>

[0066] Next, an embodiment of the multitude of heat transfer elements 92 is described.

[0067] Each heat transfer element 92 is arranged between the metal plate 80 and the busbar 42. Each heat transfer element 92 is embedded between the second flat surface section 81 of the metal plate 80 and the busbar 42. Each of the heat transfer elements 92 transfers the heat transferred from the electronic component 10 to the busbar 42 and / or the heat generated by the busbar 42 from the busbar 42 to the metal plate 80. Each of the heat transfer elements 92 is an element for transferring heat generated by the electronic component 10 at the time of energy input and / or heat (Joule heat) generated by the busbar 42 itself at the time of energy input to the metal plate 80. Each of the heat transfer elements 92 is, for example, a heat transfer sheet (for example, a thermally conductive silicone sheet) with elasticity.Each of the heat transfer elements 92 consists of a material with a higher thermal conductivity than, for example, the base plate 41. However, each heat transfer element 92 is not limited to the above example and can be a heat transfer element made of a thermally conductive gel or another material.

[0068] Fig. Figure 8 is a bottom view showing the routing board 40 in which the plurality of heat transfer elements 92 and the plurality of padding elements 94 are arranged. In the present embodiment, the plurality of heat transfer elements 92 are partially provided in the routing board 40. For example, each heat transfer element 92 is arranged at a location that overlaps a portion of the corresponding busbar 42 when viewed in the Z direction. In particular, each heat transfer element 92 is arranged at a location that overlaps a portion of the corresponding busbar 42 in the vicinity of the electronic component 10 when viewed from the Z direction. In the present embodiment, each heat transfer element 92 is arranged at a location that overlaps the corresponding connecting component 20 when viewed from the Z direction.

[0069] In the present embodiment, a portion of each heat transfer element 92 is in contact with the corresponding busbar 42 at a position that overlaps the corresponding connecting component 20 when viewed in the Z-direction. In this case, each heat transfer element 92 easily transfers the heat transferred from the terminal 13 of the electronic component 10 to the connecting component 20 from the corresponding connecting component 20 via the busbar 42 to the metal plate 80.

[0070] In the present embodiment, a portion of each heat transfer element 92 is arranged in a position that overlaps the head 43b of the corresponding fastening element 43 in the Z-direction and is in contact with the head 43b of the corresponding fastening element 43. In this case, each heat transfer element 92 easily transfers the heat transferred from the terminal 13 of the electronic component 10 to the connecting component 20 from the corresponding fastening element 43 to the metal plate 80.

[0071] In the present embodiment, a portion of each heat transfer element 92 is in contact with the corresponding busbar 42 at a position that overlaps the corresponding electronic component 10 in the Z-direction. In this case, each heat transfer element 92 readily transfers the heat transferred from the corresponding electronic component 10 to the busbar 42 from the busbar 42 to the metal plate 80. When the upper surface of each busbar 42 is in contact with the corresponding electronic component 10, each busbar 42 is thermally connected to the corresponding electronic component 10. <7. Upholstery element>

[0072] Next, an embodiment of one of the many upholstery elements 94 is described.

[0073] Each cushioning element 94 is arranged between the metal plate 80 and the corresponding mounting plate 40. The cushioning element 94 is sandwiched between the metal plate 80 and the corresponding mounting plate 40 and is elastically deformed and held in place. The cushioning element 94 can be arranged, for example, between the metal plate 80 and the corresponding base plate 41 or between the metal plate 80 and the busbar 42.

[0074] Each padding element 94 is arranged, viewed in the Z-direction, between the corresponding electronic component 10 and the corresponding first fixing section 52. Each padding element 94 can, for example, be arranged on a line segment that connects the center of the corresponding electronic component 10 and the center of the corresponding first fixing section 52, viewed in the Z-direction. Each padding element 94 can, for example, be arranged on a line segment that connects the center of the movable section 17 of the corresponding electronic component 10 and the center of the corresponding first fixing section 52, viewed in the Z-direction. Each padding element 94 can, for example, be arranged on a line segment that connects the center of a section that generates sound in the corresponding electronic component 10 and the center of the corresponding first fixing section 52, viewed from the Z-direction.For example, each cushioning element 94 can be separated from the electronic component 10 when viewed in the Z direction. For example, each cushioning element 94 can be separated from the first fixing section 52 when viewed in the Z direction. For example, each cushioning element 94 can be located closer to the corresponding first fixing section 52 than to the corresponding electronic component 10 when viewed in the Z direction.

[0075] The electrical connection unit 1 has a first cushioning element 95 as cushioning element 94. Furthermore, the electrical connection unit 1 has a second cushioning element 96 as cushioning element 94. Among the plurality of cushioning elements 94, any of the cushioning elements 94 can be, for example, the first cushioning element 95. Among the plurality of cushioning elements 94, at least one cushioning element 94 (other than the first cushioning element 95) can be, for example, the second cushioning element 96. Although in Fig. 8 where only one second cushioning element 96 is shown, the electrical connection unit 1 can have a plurality of second cushioning elements 96.

[0076] Each first cushioning element 95 is separated from the corresponding busbar 42. Each of the first cushioning elements 95 is sandwiched between the first flat surface section 51 of the corresponding base plate 41 and the second flat surface section 81 of the metal plate 80 and is elastically deformed and held in place. Each of the first cushioning elements 95 is in contact with the second flat surface section 81 of the metal plate 80 on the -Z-direction side. Each of the first cushioning elements 95 is in contact with the first flat surface section 51 of the corresponding base plate 41 on the +Z-direction side. Each first cushioning element 95 is provided separately from the plurality of heat transfer elements 92. Each first cushioning element 95 can be separated from the plurality of heat transfer elements 92.

[0077] Each first cushioning element 95 can be made of a material with thermal conductivity, but it does not have to be. Each first cushioning element 95 can, for example, be made of rubber, which has electrically insulating properties.

[0078] The second cushioning element 96 is sandwiched between the second flat surface section 81 of the metal plate 80 and the corresponding busbar 42 and is elastically deformed and held in place. The second cushioning element 96 is in contact with the second flat surface section 81 of the metal plate 80 on the -Z-direction side. Each of the second cushioning elements 96 is in contact with the corresponding busbar 42 on the +Z-direction side.

[0079] The second padding element 96 is, for example, a heat transfer sheet (e.g., a thermally conductive silicone sheet) with elasticity. Each of the second padding elements 96 is made of a material with a higher thermal conductivity than, for example, the base plate 41. However, the second padding element 96 is not limited to the example above, but can also be a heat transfer element made of a thermally conductive gel or another material. Each of the second padding elements 96 is arranged at a point that overlaps a portion of the corresponding busbar 42 in the Z-direction. The second padding element 96 can, for example, also be used as a heat transfer element. <8. Insulating cover>

[0080] With further reference to Fig. 1 describes a design of the insulating cover 93.

[0081] The insulating cover 93 prevents the main body MU from coming into contact with the energy supply path. The insulating cover 93 is made, for example, of a synthetic resin and has insulating properties. The insulating cover 93 has, for example, a box-shaped form that is open on the -Z side. The insulating cover 93 has a plurality of vent holes 93h. The insulating cover 93 is attached to the metal plate 80 in the Z direction. Note that the insulating cover 93 is not limited to a box-shaped form, but can also be a sheet-like element that covers the energy supply path of the main body MU. <9. Busbar exposure structure>

[0082] Next, an exposure structure for each busbar 42 is described.

[0083] First, an exposure structure is created on the side of the upper surface of each busbar 42 with reference to the Fig. 6 and Fig. 7 described. In the present embodiment, at least a portion of the extending section 63 of the busbar 42 is exposed to the outside of the base plate 41 on the side of the upper surface (the side of the first surface 51a of the first flat surface section 51). For example, the extending section 63 of the busbar 42 is exposed to the outside of the base plate 41 on the side of the upper surface at least in a portion of an area that, viewed in the Z direction, overlaps the corresponding electronic component 10.

[0084] In the present embodiment, the busbar 42 is received in the receiving section 55 over its entire length and extends along the first surface 51a of the first flat surface section 51. The busbar 42 is exposed on its upper surface side over its entire length towards the outside of the base plate 41.

[0085] As in Fig. As shown in Figure 8, at least part of the extending section 63 of the busbar 42 is exposed not only on the side of the upper surface, but also on the side of the lower surface (side of the second surface 51b) to the outside of the base plate 41. For example, the busbar 42 is exposed on the lower surface side over its entire length to the outside of the base plate 41. <10. Fixing structure>

[0086] Next, a fixing structure of the subunit SU is described. <10.1 Structure of the metal plate>

[0087] Fig. 9 is a cross-sectional view along line IX-IX of the in Fig. 2 structure shown. As described above, the metal plate 80 has the second fixing section 82 and the third fixing section 83.

[0088] The second fixing section 82 is a projection that extends in the +Z direction from the second surface section 81 of the metal plate 80. For example, the second fixing section 82 projects laterally in the +Z direction from the first surface 51a of the first flat surface section 51 of the base plate 41. In the present embodiment, the second fixing section 82 projects more in the +Z direction than the third fixing section 83, which is described later. The second fixing section 82 faces the first fixing section 52 of the base plate 41 in the Z direction. The second fixing section 82 has a coupling hole 82h that is open in the +Z direction. An inner circumferential surface of the coupling hole 82h has a groove for the screw.

[0089] The third fixing section 83 is a projection extending in the +Z direction from the second flat surface section 81. The third fixing section 83 is inserted into a through-opening 51h (described later) in the first flat surface section 51 of the base plate 41. For example, the third fixing section 83 extends through the through-opening 51h of the first flat surface section 51 and projects at the same position as, or beyond, a position of the first surface 51a of the first flat surface section 51 (a position on the +Z-direction side with respect to the first surface 51a). The third fixing section 83 faces the mounting section 14 of the electronic component 10 in the Z direction. The third fixing section 83 has a coupling hole 83h that is open in the +Z direction.

[0090] A fastener 112 (for example, a screw or a bolt) passes through the mounting hole 14h of the mounting section 14 of the electronic component 10 from the +Z direction side. When the fastener 112, having passed through the mounting hole 14h of the mounting section 14 of the electronic component 10, engages in the coupling hole 83h of the third fixing section 83 of the metal plate 80, the electronic component 10 is fastened to the metal plate 80 without penetrating the base plate 41. The fastener 112 is an example of a “second fastener”. <10.2 Structure of the installation board>

[0091] The base plate 41 has a first fixing section 52, which is attached to the second fixing section 82 of the metal plate 80. The first fixing section 52 has, for example, a vertical plate section 52a and a horizontal plate section 52b.

[0092] The standing plate section 52a extends in the +Z direction from the end of the first flat surface section 51 of the base plate 41. The standing plate section 52a is a plate section provided in the Y and Z directions. The thickness direction of the standing plate section 52a is the X direction.

[0093] The horizontal plate section 52b extends horizontally from the end of the upright plate section 52a in the +Z direction. The horizontal plate section 52b is a plate section that is provided in a horizontal direction. The horizontal plate section 52b faces the second fixing section 82 of the metal plate 80 in the Z direction. The horizontal plate section 52b has an insertion hole 52h that is opposite the coupling hole 82h of the second fixing section 82 of the metal plate 80. A fastening element 111 (for example, a screw or a bolt) passes through the insertion hole 52h. When the fastening element 111, which has been guided through the insertion hole 52h of the first fixing section 52 of the base plate 41, engages in the coupling hole 82h of the second engagement section 82 of the metal plate 80, the base plate 41 is fastened to the metal plate 80.Fastener 111 is an example of a “first fastener”. Vertical plate section 52a is an example of a “first section”. Horizontal plate section 52b of subunit SUX is an example of a “second section”.

[0094] The first flat surface section 51 of the base plate 41 has the through-opening 51h described above. The through-opening 51h penetrates the first flat surface section 51 in the Z-direction. The through-opening 51h is located at a position corresponding to the third fixing section 83 of the metal plate 80 in the Z-direction. The third fixing section 83 of the metal plate 80 passes through the through-opening 51h of the base plate 41 and protrudes at the same position as the first surface 51a of the first flat surface section 51, or protrudes further towards the +Z-direction than the first surface 51a of the first flat surface section 51.The mounting section 14 of the electronic component 10 is attached to the third fixing section 83 at the same position as the first surface 51a of the first flat surface section 51 or at a position that is further towards the side of the +Z direction than the first surface 51a of the first flat surface section 51. <11. Fixing structure in relation to the plurality of subunits>

[0095] Next, with reference to the Fig. Figures 1 to 3 describe a fixing structure in connection with the plurality of subunits SU. In the present embodiment, the main body MU is divided into a plurality of subunits SU (for example, the three subunits SUX, SUY, and SUZ).

[0096] The subunit SUX contains the majority of the electronic components 10X, the base plate 41, and the majority of the busbars 42. The majority of the busbars 42 contain sections that are on the same plane and electrically connected to the majority of the electronic components 10X. The subunit SUX is an example of a "first subunit".

[0097] Subunit SUY contains the majority of the electronic components 10Y, the base plate 41, and the majority of the busbars 42. The majority of the busbars 42 contain sections arranged on the same plane and are electrically connected to the majority of the electronic components 10Y. Subunit SUY is electrically connected to subunit SUX via a coupling busbar or similar connection. Subunit SUY is an example of a "second subunit".

[0098] Subunit SUZ contains the majority of the electronic components 10Z, the base plate 41, and the majority of the busbars 42. The majority of the busbars 42 contain sections that are on the same plane and electrically connected to the majority of the electronic components 10Z. Subunit SUZ is electrically connected to subunit SUY via a coupling busbar or similar connection. Subunit SUZ is an example of a "third subunit".

[0099] In the present embodiment, each of the plurality of subunits SU (for example, the three subunits SUX, SUY, and SUZ) is fixed to the metal plate 80. In this configuration, the plurality of subunits SU (e.g., three subunits SUX, SUY, and SUZ) are integrally held by a single metal plate 80.

[0100] In the present embodiment, the longitudinal direction of subunit SUX is the X-direction. The longitudinal direction of subunit SUY is the X-direction. The longitudinal direction of subunit SUZ is the X-direction. The plurality of subunits SU (for example, the three subunits SUX, SUY, and SUZ) lie side by side in the X-direction and are arranged in a line in the X-direction. The longitudinal direction of metal plate 80 is the X-direction. The length of metal plate 80 in the X-direction is greater than the sum of the lengths of the plurality of subunits SU (for example, three subunits SUX, SUY, and SUZ) in the X-direction.

[0101] In the present embodiment, the first fixing section 52 of subunit SUX and the first fixing section 52 of subunit SUY are arranged at positions where the first fixing sections 52 overlap each other in the Z-direction. The first fixing section 52 of subunit SUX and the first fixing section 52 of subunit SUY are jointly attached to the second fixing section 82 of the metal plate 80 via a fastening element 111.

[0102] Similarly, the first fixing section 52 of subunit SUY and the first fixing section 52 of subunit SUZ are arranged at positions where the first fixing sections 52 overlap each other in the Z-direction. The first fixing section 52 of subunit SUY and the first fixing section 52 of subunit SUZ are jointly attached to the second fixing section 82 of the metal plate 80 via a fastening element 111.

[0103] In the present embodiment, the heat generated by the electronic component 10X and the busbar 42 contained in the subunit SUX is transferred to the metal plate 80 via one or more heat transfer elements 92 facing the subunit SUX. Similarly, the heat generated by the electronic component 10Y and the busbar 42 contained in the subunit SUY is transferred to the metal plate 80 via one or more heat transfer elements 92 facing the subunit SUY. The heat generated by the electronic components 10Z and the busbars 42 contained in the subunit SUZ is transferred to the metal plate 80 via one or more heat transfer elements 92 facing the subunit SUZ.

[0104] In the present embodiment, the plurality of subunits SU (for example, three subunits SUX, SUY, and SUZ) can have different heat generation rates. Even in a case where the heat generation rates of the plurality of subunits SU differ, it is possible to promote the cooling of the plurality of subunits SU (e.g., three subunits SUX, SUY, and SUZ) by using a large metal plate 80. For example, in a case where the heat generation rates of the plurality of subunits SU differ, the heat of the plurality of subunits SU can be equalized by a large metal plate 80. <12. Advantages><A. Vorteile zusammenhängend mit dem Polsterelement >

[0105] According to the present embodiment, each cushioning element 94 is arranged in the Z-direction between the electronic component 10, which has the movable section 17, and the first fixing section 52. In this configuration, among the types of sound generated by the electronic component 10, the sound transmitted to the metal plate 80 via the first fixing section 52 is absorbed by the respective cushioning elements 94. This process makes it less likely that the sound generated by the electronic component 10 will be transmitted to the metal plate 80, and the emission of the sound generated by the electronic component 10 can be suppressed. Therefore, the noise level can be improved.

[0106] According to the present embodiment, the second fixing section 82, which projects from the second flat surface section 81, is attached to the first fixing section 52. In this embodiment, the sound generated by the electronic component 10, transmitted via the first fixing section 52 to the metal plate 80, is absorbed by each cushioning element 94 and then transmitted via the second fixing section 82, which projects from the second flat surface section 81, to the second flat surface section 81. This process makes it less likely that the sound generated by the electronic component 10 will be transmitted to the second flat surface section 81, and the emission of the sound generated by the electronic component 10 can be suppressed. Therefore, the noise level can be improved.

[0107] According to the present embodiment, the first padding element 95 is separated from the busbar 42 with respect to the heat transfer element 92, which overlaps the busbar 42 in the Z-direction. In this configuration, a space that hardly impedes the heat dissipation of the busbar 42 can be used as the arrangement space for the first padding element 95. If such a space can be used, the first padding element 95 can be easily arranged. Therefore, it is simple to suppress the emission of sound generated by the electronic component 10. Furthermore, in this design, the material of the first padding element 95 is not limited to a material with high thermal conductivity, such as that of the heat transfer element 92, but a material with low thermal conductivity can also be used.For example, the material of the first padding element 95 is not limited to a material with high thermal conductivity, and a material can be used that readily absorbs the sound generated by the electronic component 10. Therefore, it is easy to suppress the emission of sound generated by the electronic component 10.

[0108] According to the present embodiment, the second cushioning element 96 overlaps the busbar 42 in the Z-direction. This design allows the second damping element 96 to suppress the sound emission from the electronic component 10 and transfer heat from the busbar 42 to the metal plate 80. If the second cushioning element 96 can, for example, transfer heat, the second cushioning element 96 and the heat transfer element can be used together. This reduces the number of components.

[0109] According to the present embodiment, the electrical connection unit 1 has the metal plate 80 as a rigid element, which faces and is attached to the routing board 40 and sandwich-like accommodates the plurality of heat transfer elements 92 and the plurality of cushioning elements 94. With this design, the heat generated in the electronic component 10, the busbar 42, and the like can be dissipated to the metal plate 80. Therefore, it is possible to suppress the emission of sound generated by the electronic component 10 and simultaneously promote the heat dissipation of the electrical connection unit 1. <B. Vorteile zusammenhängend mit der Verlegungsplatine>

[0110] According to the present embodiment, the height of the electrical connection unit 1 can be easily reduced. As a comparative example, consider an electrical connection unit in which a busbar is arranged in a vertical position relative to a lower wall of an enclosure. Since, for example, a cross-sectional area of ​​a busbar is determined in such a configuration to act as a routing element, it can be difficult to reduce the width (height) of the vertical busbar. In this case, the width of the vertical busbar becomes a bottleneck, and it can be difficult to reduce the height of the electrical connection unit.

[0111] In contrast to such a comparative example, in the present embodiment the electrical connection unit 1 comprises the electronic component 10 and the routing board 40. The routing board 40 comprises the base plate 41 and the busbar 42. The base plate 41 has the plate-shaped first flat surface section 51 with the first surface 51a facing the electronic component 10. The first flat surface section 51 has the receiving section 55, which is recessed in the Z-direction or penetrates the first flat surface section 51 in the Z-direction. At least a portion of the busbar 42 is housed in the receiving section 55 and extends along the first flat surface section 51. According to such a configuration, the width of the busbar is smaller compared to the configuration of the comparative example, in which at least a portion of the routing path (or(Routing path) is formed on a plane, is less likely to represent a bottleneck, and the height of electrical connection unit 1 can be easily reduced.

[0112] In particular, in the present embodiment, the cushioning element 94 in the electrical connection unit 1 can suppress the sound transmitted to the metal plate 80 for height reduction, while the electronic component 10 and the metal plate 80 are located close to each other. Therefore, it is possible to achieve both height reduction and noise reduction.

[0113] In the present embodiment, the electrical connection unit 1 comprises the connection component 20. The connection component 20 electrically connects the electronic component 10 to the busbar 42. The busbar 42 has the connection section 61, which is in contact with the connection component 20. The connection section 61 is housed in the receiving section 55 and extends along the first flat surface section 51. According to this design, it is also easy to reduce the height of the electrical connection unit 1, since more sections of the routing path are formed in one plane.

[0114] In the present embodiment, the busbar 42 is housed in the receiving section 55 over its entire length and extends along the first flat surface section 51. According to such a design, it is also easy to reduce the height of the electrical connection unit 1, since more sections of the routing path are formed in one plane. <C. Vorteile zusammenhängend mit der flachen Sammelschiene >

[0115] According to the present embodiment, it is possible to improve the ease of assembly of the electrical connection unit 1. As a comparative example, consider an electrical connection unit in which a busbar is arranged in a vertical position relative to the lower wall of a housing. In such a configuration, it is necessary to fix the busbar vertically to the housing, and it is difficult to improve the ease of assembly of the busbar. In this case, it can also be difficult to improve the ease of assembly of the electrical connection unit 1.

[0116] In contrast to a comparable example, the electrical connection unit 1 in the present embodiment comprises the base plate 41 and the busbar 42. The base plate 41 has a plate-shaped first flat surface section 51. This first flat surface section 51 includes a receiving section 55, which is either recessed in the Z-direction or extends through the first flat surface section 51 in the Z-direction. At least a portion of the busbar 42 is housed within the receiving section 55 and extends along the first flat surface section 51. According to this design, the base plate 41 and the busbar 42 can be easily handled as an integral unit, and the ease of assembly with regard to busbar mounting can be improved compared to the design of the comparable example. This, in turn, improves the ease of assembly of the electrical connection unit 1.

[0117] In particular, in the present embodiment, the cushioning element 94 in the electrical connection unit 1 can, for example, suppress the sound transmitted to the metal plate 80 to improve ease of assembly, while the electronic component 10 and the metal plate 80 are located close to each other. Therefore, it is possible to achieve both improved ease of assembly and reduced noise.

[0118] In the present embodiment, the busbar 42 is housed in the receiving section 55 over its entire length and extends along the first flat surface section 51. According to such a design, it is easy to reduce the height of the electrical connection unit 1 while simultaneously improving its ease of assembly.

[0119] In the present embodiment, the busbar 42 is integrated with the base plate 41 by means of an insert molding. According to this design, it is possible to eliminate or reduce the work involved in manually attaching the busbar 42 to the housing. Therefore, the ease of assembly of the electrical connection unit 1 can be further improved.

[0120] In the present embodiment, the fastening element 43, which projects from the busbar 42 in the Z-direction, and the connecting component 20, which is attached to the fastening element 43 in the Z-direction, are provided. The connecting component 20 electrically connects the electronic component 10 to the busbar 42. According to this design, the working direction for connecting a target connection component to the busbar 42 can be easily aligned with the Z-direction. In cases where the working direction can be aligned, the ease of assembly of the electrical connection unit 1 can be further improved.

[0121] In the present embodiment, the connecting component 20 is connected to the electronic component 10 from the X-direction (or the Y-direction). According to this configuration, the connection direction of the electronic component 10 with respect to the busbar 42 can be changed to the Z-direction by using the connecting component 20 for the electronic component 10 that needs to be connected from the X-direction. This further improves the ease of assembly of the electrical connection unit 1. <13. Modification Examples>

[0122] The following are some examples of modifications. It should be noted that characteristics other than those described below in the individual modification examples are the same as those of the embodiment described above. (First modification example)

[0123] Each of the busbars 42 is not limited to a structure in which at least part of the base plate 41 is exposed to the outside on both the upper and lower surface sides. As one variation, the entire busbar 42 can be covered by the base plate 41 on the upper surface. As another variation, the entire busbar 42 can be covered by the base plate 41 on the lower surface. In this case, the second padding element 96 on the +Z-direction side of each of the second padding elements 96 need not be in contact with the busbar 42 as long as it is in contact with the base plate 41 covering the busbar 42. On the +Z-direction side of each of the heat transfer elements 92, the heat transfer element 92 need not be in contact with the busbar 42 as long as it is in contact with the base plate 41 covering the busbar 42. (Second modification example)

[0124] The basic element containing the first basic section is not limited to the base plate 41, which has the first flat surface section 51. As an alternative example, the basic element can be an element that has a first basic section such as a blocking section, a curved section, or a bent section instead of the first flat surface section 51. (Third modification example)

[0125] The rigid element is not limited to the metal plate 80. As an alternative, the rigid element can also be a metal block. As another alternative, the rigid element can be a plastic plate. As yet another alternative, the rigid element can be a resin block. (Fourth modification example)

[0126] The rigid element having the second basic section is not limited to the metal plate 80 with the second flat surface section 81. As a variation, the rigid element can be an element having a second basic section such as a block section, a curved section, and a bent section instead of the second flat surface section 81. (Fifth modification example)

[0127] The routing board 40 is not limited to a structure in which the base plate 41 and the busbar 42 are integrated by insert forming. For example, the busbar 42 can be positioned in the receiving section 55 after the base plate 41, which provides the receiving section 55 for receiving the busbar 42, has been formed. In this case, the busbar 42 can be fitted to the receiving section 55 or fixed to the receiving section 55 by an adhesive or other fastener. In these cases, potting can be performed to fill any gap between the busbar 42 and the receiving section 55. (Sixth modification example)

[0128] The basic element of the busbar 40 is not limited to the base plate 41, which has the plate-shaped first flat surface section 51. The busbar 40 can be a basic element (e.g., an insulating film) with the sheet-shaped first flat surface section 51. In this case, the receiving section 55 can be formed by a portion of the first flat surface section 51 that follows the outer shape of the busbar 42. In the present disclosure, the term "sheet-shaped" or "sheet" is not limited to an element with a thickness of 1 mm or more, and an element (a so-called film) with a thickness of less than 1 mm can also be used. (Seventh modification example)

[0129] The base plate 41 of the installation board 40 can contain a plurality of elements (plate elements or sheet metal elements). These elements are provided to accommodate the plurality of busbars 42, which are arranged horizontally. For example, the plurality of elements are integrated by joining the plurality of busbars 42 together, for instance, by laminate forming. The plurality of elements forms the first flat surface section 51. In this case, the receiving section 55 can be formed in a hollow shape within the base plate 41 (between the plurality of elements). The plurality of elements can be a plurality of plate elements, a plurality of sheet metal elements, or a combination of a plate element and a sheet metal element. The plate element can, for example, be a flexible plate element.The first flat surface section 51, formed from the multitude of elements, has an opening that exposes at least the connecting section 61 of the busbar 42. (Eighth modification example)

[0130] The connection between the electronic component 10 and the busbar 42 is not limited to the connection via the connecting component 20. The electronic component 10 can be connected directly to the busbar 42 by means of a fastening element (for example, a bolt or a screw), by welding, or similar means.

[0131] Several embodiments and modification examples have been described above. However, the embodiment and modification examples are not limited to those described above. For example, multiple embodiments can be implemented in combination. [List of reference symbols] 1 electrical connection unit 10 electronic components 10X electronic component 10Y electronic component 10Z electronic component 11 cases 11a Insulating rib 12 component bodies 13 connection 13A connection 13B connector 13h Mounting hole 14 Fastening section 14h Mounting hole 16 Braking section 17 Movable section 20 connection components 21 first section 21h first mounting hole 22 second section 22h second mounting hole 40 installation board 40M routing board 40X installation board 40Y installation board 40Z routing board 41 Base plate (base element) 42 busbar 42h through hole 42p plate section 43 Fastening element 43a shaft 43b Head 44 Coupling element 51 First flat surface section (first basic section) 51a first surface 51b second surface 51h Through hole 52 First fixing section 52a standing plate section 52b horizontal plate section 52h entry hole 55 Recording section 61 Connecting section 63 extending section 71 Fastening element 80 Metal plate (rigid element) 80e1 first end 80e2 second end 80e3 third end 80e4 fourth end 81 Second flat surface section (second base section) 82 Second fixing section 82h coupling hole 83 Third fixing section 83h coupling hole 91 Insulating film 92 Heat transfer element 93 insulating cover 93h vent hole 94 Upholstered element 95 First upholstery element 96 Second upholstery element 111 Fastening element 112 Fastening element L11 width L12 width MU main body S1 gap SU subunit SUX subunit SUY subunit SUZ subunit

Claims

[1] Electrical connection unit (1) comprising: a rigid element (80); an electronic component (10) comprising a movable section (17); a busbar (42) which is electrically connected to the electronic component (10); a basic element (41) comprising a first basic section (51) having a first surface (51a) facing the electronic component (10) and a second surface (51b) arranged on a side opposite the first surface (51a) and facing the rigid element (80), which holds the busbar (42), and a first fixing section (52) attached to the rigid element (80); and a cushioning element (94) that is arranged between the rigid element (80) and the base section (41) or between the rigid element (80) and the busbar (42), and that is arranged between the electronic component (10) and the first fixing section (52) when viewed in a cutting direction (Z) that intersects the first surface (51a). [2] Electrical connection unit (1) according to claim 1, wherein the rigid element (80) has a second base section (81) which faces the second surface (51b) and a second fixing section (82) which projects from the second base section (81) in the cutting direction (Z) and to which the first fixing section (52) is attached. [3] Electrical connection unit (1) according to claim 1 or 2, wherein the cushioning element (94) is a first cushioning element (95) arranged between the rigid element (80) and the base element (41) and separated from the busbar (42) when viewed in the section direction (Z). [4] Electrical connection unit (1) according to claim 1 or 2, wherein the cushioning element (94) is a second cushioning element (96) which is arranged between the rigid element (80) and the busbar (42) and overlaps the busbar (42) when viewed in the section direction (Z). [5] Electrical connection unit (1) according to claim 1 or 2, wherein a metal plate is provided as the rigid element (80).

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