Electrical connection unit

Abstract

One embodiment provides an electrical connection unit that can improve ease of assembly. [Solution] An electrical connection unit according to one embodiment comprises a unit body, a first cover that covers the unit body from a first side in a first direction, a second cover that covers the unit body from a second side in a first direction, and a wiring member that is integrally provided with the first cover and is detachably connected to the unit body. The unit body comprises an insulating base member, a busbar, a plurality of electronic components having terminals connected to the busbar and connector connection parts, a first connector detachably connected to the connector connection parts, and a plurality of connector members each having a second connector arranged in a first direction. The wiring member comprises a plurality of intermediate connectors that can be inserted into and removed from the second connectors of the plurality of connector members, and a support that integrally supports the plurality of intermediate connectors.

Description

Technical Field

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

Background Art

[0002] An electrical connection unit having a housing for accommodating electronic components and a bus bar attached to the housing in an upright posture is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, an assembly including an electrical connection unit is desired to have improved assemblability.

[0005] One embodiment provides an assembly that can improve assemblability.

Means for Solving the Problems

[0006] An electrical connection unit according to one embodiment includes a unit body, a first cover that covers the unit body from a first side in a first direction, a second cover that covers the unit body from a second side in the first direction and to which the first cover is attached, and a wiring member that is integrally provided with the first cover and is detachably connected to the unit body. The unit body includes an insulating base member including a plate-shaped or sheet-shaped planar portion, a conductive busbar held in the planar portion, a plurality of electronic components provided on the first side in the first direction with respect to the base member and each having a terminal and a connector connection portion electrically connected to the busbar, a first connector detachably connected to the connector connection portion, and a plurality of connector members each having a second connector arranged in the first direction. The wiring member includes a plurality of intermediate connectors that, when viewed from the first direction, are provided at positions corresponding to the second connectors of the plurality of connector members and are insertable and removeable in the first direction from the second connectors of the plurality of connector members, and a support that integrally supports the plurality of intermediate connectors. [Effects of the Invention]

[0007] According to one embodiment, the ease of assembly of the electrical connection unit can be improved. [Brief explanation of the drawing]

[0008] [Figure 1] A cross-sectional view showing an electrical connection unit of an embodiment. [Figure 2] A perspective view illustrating the unit body of the embodiment. [Figure 3] A perspective view showing a subunit of the embodiment. [Figure 4] A perspective view showing a partially disassembled subunit of the embodiment. [Figure 5] A perspective view showing a partially disassembled electronic component and connecting component of the embodiment. [Figure 6] A side view showing the electronic components and connector members of the embodiment. [Figure 7] A perspective view showing a wiring substrate of an embodiment. [Figure 8] A plan view showing the wiring substrate of the embodiment. [Figure 9] A perspective view showing a partially disassembled electrical connection unit of the embodiment. [Figure 10] A bottom view showing the wiring substrate of the embodiment. [Figure 11] A plan view showing the insulating cover and wiring member of the embodiment. [Figure 12] A perspective view showing the cable routing member of the embodiment. [Figure 13] A cross-sectional view illustrating the manufacturing method of an electrical connection unit according to an embodiment. [Figure 14] A cross-sectional view illustrating the manufacturing method of an electrical connection unit according to an embodiment. [Figure 15] A cross-sectional view illustrating the manufacturing method of an electrical connection unit according to an embodiment. [Figure 16] A cross-sectional view illustrating the manufacturing method of an electrical connection unit according to an embodiment. [Figure 17] A cross-sectional view illustrating the manufacturing method of an electrical connection unit according to an embodiment. [Figure 18] Cross-sectional view of an electrical connection unit in a modified embodiment. [Modes for carrying out the invention]

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

[0010] In the present disclosure, terms are defined as follows. "Connection" is not limited to mechanical connection and may include electrical connection. That is, "connection" is not limited to the case where two elements to be connected are directly connected, and may include the case where two elements to be connected are connected with another element intervening therebetween. "Containment" is not limited to the case where the whole of a component is contained, and may include the case where only a part of the component is contained (in a state where the remaining part of the component protrudes). "Facing" means that the virtual projection images of two objects overlap when viewed from a specific direction. That is, "facing" is not limited to the case where two objects directly face each other, and may include the case where two objects face each other with another member existing between them. "Parallel", "orthogonal", or "the same" may respectively include the case of being "substantially parallel", "substantially orthogonal", or "substantially the same". "Sheet-like" or "sheet" is not limited to a member with a thickness of 1 mm or more, and may also apply to a member with a thickness of less than 1 mm (so-called film).

[0011] In the present disclosure, the +X direction, -X direction, +Y direction, -Y direction, +Z direction, and -Z direction are defined as follows. The +X direction is the direction from the first end portion 80e1 to the second end portion 80e2 of a metal plate 80 described later (see FIG. 9). The -X direction is the direction opposite to the +X direction. Hereinafter, when the +X direction and the -X direction are not distinguished, they are simply referred to as the "X direction". The +Y direction and the -Y direction are directions that intersect (for example, are orthogonal to) the X direction. The +Y direction is the direction from the third end portion 80e3 to the fourth end portion 80e4 of the metal plate 80 described later (see FIG. 9). The -Y direction is the direction opposite to the +Y direction. Hereinafter, when the +Y direction and the -Y direction are not distinguished, they are simply referred to as the "Y direction". The +Z direction and the -Z direction are directions that intersect (for example, are orthogonal to) the X direction and the Y direction. The +Z direction is the direction from the metal plate 80 described later toward the main body portion MU (see FIG. 1). The -Z direction is the direction opposite to the +Z direction. Hereinafter, when the +Z direction and the -Z direction are not distinguished, they are simply referred to as the "Z direction". The Z direction is an example of the "first direction". The +Z direction is an example of the "first side of the first direction". The -Z direction is an example of the "second side of the first direction". The X direction is an example of the "second direction". The -X direction is an example of the "first side of the second direction". The +X direction is an example of the "second side of the second direction". The Y direction is an example of the "third direction". The -Y direction is an example of the "first side of the third direction". The +Y direction is an example of the "second side of the third direction".

[0012] Hereinafter, when the X direction and the Y direction are not distinguished, they may be referred to as the "horizontal direction". Hereinafter, the Z direction may be referred to as the "vertical direction". Also hereinafter, the +Z direction side may be referred to as "up" and the -Z direction side may be referred to as "down". However, these expressions are for convenience of explanation and do not limit the gravitational direction (installation posture of the unit main body 1) of the unit main body 1.

[0013] (Embodiment) <1. Configuration of the assembly> Figure 1 is a cross-sectional view showing the electrical connection unit 100 of this embodiment. The electrical connection unit 100 comprises a unit body 1, a metal plate (second cover) 80, an insulating cover 93, and a wiring member 300. The electrical connection unit 100 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 unit body 1 may be referred to as, for example, an "electrical connection box" or a "junction box." However, the unit body 1 is not limited to a box-shaped device.

[0014] <2. Unit Body Configuration> The unit body 1 is electrically connected to external equipment via the wiring member 300. In this disclosure, "external equipment" refers to electrical equipment located outside the unit body 1. External equipment includes, but is not limited to, equipment such as an inverter for driving a vehicle motor or a charger for charging a battery pack.

[0015] The unit body 1 includes, for example, a main body MU, an insulating sheet 91 (see Figure 9), and a plurality of heat transfer members 92.

[0016] <3. Main body> First, let me explain the main unit (MU). Figure 2 is a perspective view illustrating the main body MU. The main body MU is the part of the unit body 1 that performs the main function (e.g., switching of electrical connection states or overcurrent protection). In this 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 this embodiment, the main body MU has three subunits SU (subunits SUX, SUY, SUZ). Each subunit SU may be referred to as a "circuit configuration".

[0017] Subunit SUX has a primary electrical function. Subunit SUX includes, for example, a plurality of electronic components 10X and a wiring board 40X. The plurality of electronic components 10X are electrically connected to the wiring board 40X.

[0018] Subunit SUY has a second electrical function, which is different from the first function. Subunit SUY includes, for example, a plurality of electronic components 10Y and a wiring board 40Y. The plurality of electronic components 10Y are electrically connected to the wiring board 40Y.

[0019] The subunit SUZ has a third electrical function, which is distinct from the first and second functions. The subunit SUZ includes, for example, a plurality of electronic components 10Z and a wiring board 40Z. The plurality of electronic components 10Z are electrically connected to the wiring board 40Z.

[0020] In this embodiment, the three subunits SUX, SUY, and SUZ are arranged side by side in the X direction.

[0021] Furthermore, the main body MU does not necessarily have to be divided into multiple subunits SU, as in the example described above. That is, the main body MU may be formed from multiple electronic components 10 and one wiring substrate 40. Also, the two or more subunits SU are not limited to subunits SU having different functions, but may also be subunits SU having the same function.

[0022] <4. Subunit Configuration> Next, we will explain the configuration of the subunit SU. As shown in Figures 3 and 4, the subunit SU includes, for example, a plurality of electronic components 10, a plurality of connecting components 20 for connecting components, a routing board 40, and a connector member 200. Each connecting component 20 is a member that forms a vertical electrical path. The connecting components 20 may also be referred to as "vertical routing members".

[0023] <4.1 Electronic components and connectors for connecting components> First, we will describe the electronic component 10 and the connecting component 20 for connecting the component. Electronic component 10 is an electronic component mounted on the subunit SU according to the required functions. Examples of electronic component 10 include connectors, fuses, relays (e.g., mechanical relays or semiconductor relays), capacitors, branching components, various sensors (e.g., current sensors or voltage sensors), and electronic control units. Electronic component 10 may also be an electronic component unit comprising two or more of these components: connectors, fuses, relays, capacitors, branching components, and various sensors. Electronic component 10 is provided on the +Z direction side of the wiring substrate 40. The type of electronic component 10 is not limited to the above examples. For example, electronic component 10 may be a heat-generating component that generates heat when energized.

[0024] The connecting component 20 is a component that electrically connects the electronic component 10 and the wiring substrate 40. The connecting component 20 forms part of the current-carrying path in the subunit SU. The connecting component 20 is provided on the +Z direction side of the wiring substrate 40. The connecting component 20 is made of metal (for example, copper or a copper alloy). The connecting component 20 may also be referred to as a "metal component".

[0025] <4.1.1 Electronic Components> As shown in Figure 5, the electronic component 10 is an electronic component in which a plurality of terminals 13 are arranged in a row on one component end 10e of the electronic component 10. The electronic component 10 has, for example, a case 11, a component body 12, a plurality of terminals 13, and a plurality of mounting parts 14.

[0026] (case) The case 11 is an outer casing that forms most of the external shape of the electronic component 10. The case 11 is made of, for example, synthetic resin and has insulating properties. The case 11 houses the component body 12. The case 11 and the component body 12 may be formed integrally. In this embodiment, the case 11 is formed in the shape of a rectangular parallelepiped, for example.

[0027] In this embodiment, the case 11 has insulating ribs 11a that protrude horizontally (e.g., in the X direction) and extend in the Z direction. The insulating ribs 11a are, for example, plate-shaped and aligned horizontally (e.g., in the X direction) and in the Z direction. The insulating ribs 11a extend, for example, along the entire length of the case 11 in the Z direction. The insulating ribs 11a are positioned between a plurality of terminals 13 (terminals 13A and 13B, described later). The insulating ribs 11a electrically insulate terminals 13A and 13B. In this embodiment, a portion of the insulating ribs 11a is positioned between the first connection portions 21 (described later) of two connecting components 20 connected to the electronic component 10. The insulating ribs 11a electrically insulate between the first connection portions 21 of the two connecting components 20 connected to the electronic component 10.

[0028] As shown in Figure 2, in this embodiment, at least one of the multiple electronic components 10 is provided with a connector connection portion 17. The connector connection portion 17 may be provided on all of the multiple electronic components 10. In this embodiment, for example, the connector connection portion 17 is provided on the electronic component 10 that is a relay.

[0029] As shown in Figure 6, the connector connection portion 17 is electrically connected to the component body portion 12, which will be described later, and is provided inside the case 11. The connector member 200, which will be described later, is detachably connected to the connector connection portion 17. The connector connection portion 17 is either a female connector or a male connector. In this embodiment, the connector connection portion 17 is, for example, a male connector. The connector connection portion 17 is made of, for example, synthetic resin and has insulating properties. The connector connection portion 17 holds a plurality of terminals (not shown) that are electrically connected to the internal circuit of the component body portion 12.

[0030] The connector connection portion 17 is provided on the case side (component side) 11s facing one side in the Y direction of the case 11. The connector connection portion 17 is provided on the case side 11s facing outward in the Y direction of the wiring substrate 40 in the Y direction. As shown in Figure 2, when the unit body 1 is viewed from the Z direction, the connector connection portion 17 of the electronic component 10A located on the +Y direction side is provided protruding in the +Y direction from the case side 11s facing the +Y direction. When the unit body 1 is viewed from the Z direction, the connector connection portion 17 of the electronic component 10B located on the -Y direction side is provided protruding in the -Y direction from the case side 11s facing the -Y direction. The connector connection portion 17 allows the first connector 201 of the connector member 200, described later, to be inserted and removed along the X direction. By providing the connector connection portion 17 on the case side surface 11s facing outward in the Y direction of the cable routing board 40, the connector member 200 can be easily attached to and detached from the connector connection portion 17 from the outside of the cable routing board 40.

[0031] As shown in Figures 5 and 6, the electronic component 10 has a connector cover 18 that covers the connector connection portion 17. The connector cover 18 is made of, for example, synthetic resin and has insulating properties. The connector cover 18 is formed integrally with the case 11. The connector cover 18 has a connector insertion hole 18h that is recessed on one side in the X direction. The connector insertion hole 18h opens on the other side in the X direction, and the first portion 205a of the connector member 200, described later, can be inserted into it. In this embodiment, the connector cover 18 is provided on the side surface 11s of the case, at the end that is spaced apart from the connecting component 20 in the X direction. In this embodiment, the connector insertion hole 18h opens toward the connecting component 20 in the X direction.

[0032] (Main part of the component) The main body of the component 12 is the part that performs the main function of the electronic component 10. For example, if the electronic component 10 is a relay, the main body of the component 12 includes a switching part (e.g., a contact part) that switches between a conductive state and a non-conductive state. For example, if the electronic component 10 is a fuse, the main body of the component 12 includes a fuse that melts when an overcurrent flows. For example, if the electronic component 10 is a capacitor, the main body of the component 12 includes a part that stores electric charge.

[0033] (Terminals) As shown in Figure 5, terminal 13 is an electrical connection part exposed to the outside of case 11. Terminal 13 is electrically connected to the component body 12 inside case 11. In this embodiment, the electronic component 10 includes terminals 13A and terminal 13B as a plurality of terminals 13. One of terminals 13A and terminal 13B is the positive terminal. The other of terminals 13A and terminal 13B is the negative terminal.

[0034] In this embodiment, terminals 13A and 13B are provided on one component end 10e of the electronic component 10 in the horizontal direction (e.g., X direction). Terminals 13A and 13B are arranged side by side in the horizontal direction (e.g., Y direction). Each terminal 13 has a mounting hole 13h into which a fastening member 71 (e.g., a screw or bolt), described later, is attached. The mounting hole 13h opens in the horizontal direction (e.g., X direction). The inner circumferential surface of the mounting hole 13h of the electronic component 10 has a screw groove.

[0035] (Mounting part) The mounting portion 14 is a part for fixing the electronic component 10. The mounting portion 14 has a mounting hole 14h into which a fastening member 112 (for example, a screw or bolt, see Figure 9) described later is attached. The mounting hole 14h opens in the Z direction. The mounting hole 14h is a through hole through which the fastening member 112 passes. The destination for fixing the mounting portion 14 will be described later.

[0036] <4.1.2 Connecting Components> The connecting component 20 is a component that electrically connects the electronic component 10 and the wiring substrate 40. In this embodiment, the connecting component 20 electrically connects the electronic component 10 and the busbar 42 (see Figure 4) included in the wiring substrate 40. The connecting component 20 has, for example, a first connecting portion 21 and a second connecting portion 22.

[0037] (First connection section) The first connection portion 21 of the connecting component 20 is the portion that connects to the terminal 13 of the electronic component 10. The first connection portion 21 is a plate-shaped or prismatic portion that extends in the Z direction. The first connection portion 21 extends in the Z direction along the component end 10e (for example, the plane of the component end 10e in the X direction), which is one end portion of the electronic component 10. The first connection portion 21 is an upright portion that stands upright in the Z direction relative to the routing substrate 40 (for example, relative to the bus bar 42 described later). The first connection portion 21 is adjacent to the electronic component 10 in the horizontal direction (for example, the X direction). For example, the first connection portion 21 is adjacent to the terminal 13 of the electronic component 10 in the horizontal direction (for example, the X direction) and is connected to the terminal 13 of the electronic component 10 from the horizontal direction (for example, the X direction).

[0038] The first connecting portion 21 of the connecting component 20 has a first mounting hole 21h through which a fastening member 71 (e.g., a screw or bolt) is passed. The first mounting hole 21h opens horizontally (e.g., in the X direction). The first connecting portion 21 is physically and electrically connected to the terminal 13 of the electronic component 10 by the fastening member 71 passed through the first mounting hole 21h engaging with the mounting hole 13h of the terminal 13 of the electronic component 10.

[0039] (Second connection point) The second connecting portion 22 of the connecting component 20 is the portion that connects to the bus bar 42 (see Figure 9). The second connecting portion 22 protrudes horizontally (for example, in the X direction) from the -Z direction end 10f of the first connecting portion 21. The second connecting portion 22 is a plate portion that is aligned horizontally and along the routing substrate 40. The second connecting portion 22 is adjacent to the bus bar 42 in the Z direction and is connected to the bus bar 42 from the +Z direction. The second connecting portion 22 of the connecting component 20 is physically and electrically connected to the bus bar 42 by being attached from the +Z direction to a fastening member 43 (for example, a screw or bolt, see Figure 3) that protrudes from the bus bar 42 in the +Z direction. In this embodiment, the second connecting portion 22 of the connecting component 20 has a second mounting hole 22h through which the fastening member 43 passes. The second mounting hole 22h is open in the Z direction. The fastening member 43 passes through the second mounting hole 22h of the second connecting portion 22. Then, the second connecting portion 22 is fixed to the busbar 42 by engaging the tip of the fastening member 43, which is passed through the second mounting hole 22h, with the engaging member 44 (for example, a nut, see Figure 3). In this embodiment, the first connecting portion 21 and the second connecting portion 22 form a single connecting component 20 that has an L-shape when viewed from the side in the Y direction.

[0040] The connecting component 20 is a heat storage member (heat absorption member) that increases the heat capacity of the electrical circuit of the unit body 1. The connecting component 20 stores (absorbs) at least a portion of the heat emitted by the electronic component 10, for example. Alternatively / in addition to this, the connecting component 20 may also store (absorb) at least a portion of the heat emitted by the busbar 42 when energized. The connecting component 20 may also be called a "heat storage component" or a "heat absorption component".

[0041] <4.2 Circuit board for cable routing> Next, the wiring substrate 40 will be described. Figure 7 is a perspective view showing the wiring substrate 40. The wiring substrate 40 is a component that forms at least a portion of the electrical conduction paths between a plurality of electronic components 10, and / or at least a portion of the electrical conduction paths between the electronic components 10 and external equipment. In this disclosure, "wiring substrate" means a substrate-type wiring structure. "Substrate-type" means that, when viewed as a whole, regardless of its fine shape, it is in the shape of a plate along a single plane. In this disclosure, "plate-like" is not limited to the case where it is perfectly flat, but may include the case where there are fixing structures or ribs protruding in the Z direction. In this embodiment, the wiring substrate 40 is in the shape of a plate along the X and Y directions.

[0042] The cable routing substrate 40 includes, for example, a base plate 41, one or more (e.g., multiple) bus bars 42, and multiple fastening members 43. In this embodiment, the base plate 41 and the multiple bus bars 42 are integrated by insert molding. For example, the cable routing substrate 40 is formed as a single piece by insert molding of the bus bars 42 with the base plate 41 after the fastening members 43 are fixed to the bus bars 42. That is, the bus bars 42 are integrated with the base plate 41 without using fastening members such as screws or bolts. The cable routing substrate 40 may be formed by a different structure instead of insert molding.

[0043] (Base plate) The base plate 41 is a holding member that integrally holds a plurality of busbars 42 arranged horizontally with spacing between them. The base plate 41 is made of, for example, synthetic resin and has insulating properties. The base plate 41 electrically insulates the plurality of busbars 42. The base plate 41 is an example of a "base member". The base plate 41 may also be called an "insulating substrate". The base plate 41 has, for example, a flat portion 51 and a plurality of fixing portions 52.

[0044] The flat portion 51 is a plate-shaped part formed within the base plate 41. The flat portion 51 is plate-shaped and oriented horizontally. The flat portion 51 forms the main part of the base plate 41. The flat portion 51 forms the base (insulating base) of the base plate 41. In this embodiment, the flat portion 51 extends across the entire width of the base plate 41 in the X direction, except for the four corners of the base plate 41, and also extends across the entire width of the base plate 41 in the Y direction.

[0045] The planar portion 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 plane that aligns with the horizontal direction. The first surface 51a faces multiple electronic components 10 and also faces the insulating cover 93 (see Figure 1) of the unit body 1. The second surface 51b is located on the opposite side from the first surface 51a. The second surface 51b is a surface oriented in the -Z direction. The second surface 51b is a plane that aligns with the horizontal direction. The second surface 51b faces the metal plate 80 (see Figure 1). The thickness direction (plate thickness direction) of the planar portion 51 is the Z direction.

[0046] The flat section 51 has, for example, one or more (e.g., multiple) housing sections 55, each of which accommodates a busbar 42. The multiple housing sections 55 are formed apart from each other in the X or Y direction. Each housing section 55 is, for example, a through hole penetrating the flat section 51 in the Z direction. Alternatively, the housing sections 55 may be recesses provided on the first surface 51a or the second surface 51b of the flat section 51 that are recessed in the Z direction.

[0047] Each housing section 55 has an external shape that corresponds to the shape of the bus bar 42 it houses when viewed from the Z direction.

[0048] (Bus bar) The busbar 42 is a wiring member (electrical connection member) included in the wiring substrate 40. The busbar 42 is, for example, a wiring member for electrically connecting multiple electronic components 10. Alternatively, the busbar 42 may be a wiring member for connecting the electronic components 10 to external equipment. The busbar 42 is made of metal (for example, copper or a copper alloy) and is conductive.

[0049] At least a portion of each busbar 42 is plate-shaped and oriented horizontally. At least a portion of each busbar 42 is housed in the housing 55 and extends along the planar portion 51. That is, at least a portion of each busbar 42 extends along the first surface 51a of the planar portion 51. At least a portion of each busbar 42 extends horizontally within the housing 55. In this embodiment, each busbar 42 is plate-shaped and oriented horizontally throughout its entire length. Each busbar 42 is housed in the housing 55 and extends along the planar portion 51 throughout its entire length. Hereinafter, the portion of each busbar 42 that is housed in the housing 55 and extends along the planar portion 51 may be referred to as the "plate portion 42p". The busbar 42 is a member that forms a horizontal electrical circuit. The busbar 42 may also be referred to as a "horizontal wiring member". Some of the multiple busbars 42 may be busbars included in the positive electrode line of the unit body 1, for example. Some of the multiple busbars 42 other than those included in the positive electrode line may be busbars included in the negative electrode line of the unit body 1, for example.

[0050] Figure 8 is a plan view showing the wiring substrate 40. Each busbar 42 has, for example, a connecting portion 61 and an extended portion 63.

[0051] The connection portion 61 is the part that contacts one connection component 20. The connection component 20 is a connection component that connects one electronic component 10 to the bus bar 42. The connection portion 61 is the part of the bus bar 42 that overlaps with the connection component 20 when viewed from the Z direction. The connection portion 61 is adjacent to the connection component 20 in the Z direction and is connected to the connection component 20 from the Z direction. For example, when viewed from the Z direction, each connection portion 61 is located on the +X direction side or the -X direction side with respect to the electronic component 10. Each connection portion 61 is electrically connected to terminal 13A or terminal 13B of the electronic component 10 via the connection component 20.

[0052] The extension portion 63 extends from the connecting portion 61 in the X or Y direction. The extension portion 63 is continuously connected to the connecting portion 61.

[0053] In this embodiment, the connecting portion 61 and the extending portion 63 are plate-shaped and oriented horizontally. In this embodiment, each busbar 42 is housed in the housing portion 55 and extends along the planar portion 51, at least over the connecting portion 61 and the extending portion 63. For example, the connecting portion 61 and the extending portion 63 are housed in the housing portion 55 and extend along the planar portion 51.

[0054] (Fastening member) The fastening member 43 is a component for fixing the bus bar 42 and the connecting component 20. The fastening member 43 is, for example, a crimping bolt fixed to the bus bar 42.

[0055] In this embodiment, the connection portion 61 of the busbar 42 has a through hole 42h. The through hole 42h penetrates the busbar 42 in the Z direction. The fastening member 43 is, for example, a bolt having a shaft portion 43a and a head portion 43b (see Figure 14). The circumferential surface of the shaft portion 43a has screw grooves. The head portion 43b has a larger diameter than the shaft portion 43a. The fastening member 43 is crimped and fixed to the busbar 42 with the shaft portion 43a passing through the through hole 42h of the busbar 42. With this fixing, the fastening member 43 is electrically and physically connected to the busbar 42 with the shaft portion 43a protruding from the through hole 42h of the busbar 42 in the +Z direction. Note that the fastening member 43 is not limited to crimping and may be fixed to the busbar 42 by welding or other methods.

[0056] <5. Connector Components> Next, the connector component 200 will be described. As shown in Figures 5 and 6, the connector member 200 connects the connector connection portion 17 provided on the electronic component 10 to the relay connector 320 of the wiring member 300, which will be described later. The connector member 200 is interposed between the connector connection portion 17 and the relay connector 320. As shown in Figure 6, the connector member 200 comprises a first connector 201, a second connector 202, a connecting harness 203, and a connector holding portion 205.

[0057] The first connector 201 is detachably connected to the connector connection portion 17 of the electronic component 10. The first connector 201 is either a so-called male connector or a female connector. In this embodiment, the first connector 201 is, for example, a female connector. The first connector 201 has a first end portion 201j to which the connector connection portion 17 is detachably connected. The first end portion 201j is made of, for example, synthetic resin and is insulating. The first end portion 201j holds a plurality of terminals (not shown) electrically connected to one end of the wiring (not shown) of the connection harness 203. The first end portion 201j is formed in a shape that allows it to be inserted into and removed from the connector connection portion 17. The first end portion 201j and the connector connection portion 17 are equipped with engaging claws (not shown) that can engage with each other when the first end portion 201j and the connector connection portion 17 are connected and each terminal of the first end portion 201j and each terminal of the connector connection portion 17 are electrically connected. The first end portion 201j is an example of an "end portion".

[0058] The second connector 202 is positioned in the +Z direction. The second connector 202 is detachably connected to the relay connector 320. The second connector 202 is either a so-called female connector or a male connector. In this embodiment, the second connector 202 is, for example, a male connector. The second connector 202 has a second end 202j to which the relay connector 320 is detachably connected. The second end 202j is made of, for example, synthetic resin and is insulating. The second end 202j holds a plurality of terminals (not shown) electrically connected to the other end of the wiring (not shown) of the connecting harness 203. The second end 202j is formed in a shape that allows it to be inserted into and removed from the relay connector 320.

[0059] The connection harness 203 electrically connects multiple terminals (not shown) of the first connector 201 and multiple terminals (not shown) of the second connector 202. Each connection harness 203 includes multiple wires 203w that electrically connect each of the multiple terminals of the first connector 201 to each of the multiple terminals of the second connector 202.

[0060] The connector holder 205 holds the first connector 201 and the second connector 202. The connector holder 205 is hollow and cylindrical, housing the first connector 201, the second connector 202, and the connecting harness 203 inside. The connector holder 205 is made of, for example, synthetic resin and has insulating properties. In a side view from the Y direction, the connector holder 205 is formed in an L shape. The connector holder 205 integrally comprises a first part 205a and a second part 205b.

[0061] The first part 205a holds the first connector 201. The first part 205a extends in the X direction with the first connector 201 connected to the connector connection part 17. The first connector 201 is held at one end of the first part 205a in the X direction. The first end 201j of the first connector 201 is provided facing one side in the X direction. The one end of the first part 205a of the connector holding part 205 in the X direction is inserted into the connector insertion hole 18h of the connector cover 18 provided on the electronic component 10. The first connector 201 is connected to the connector connection part 17 within the connector insertion hole 18h.

[0062] The second portion 205b is connected to the other end of the first portion 205a in the X direction. The second portion 205b extends in the +Z direction from the portion connected to the first portion 205a. The second portion 205b holds the second connector 202. The second connector 202 is held at the +Z end of the second portion 205b. The second connector 202 is provided with its second end 202j facing in the +Z direction.

[0063] <6. Insulating sheets and heat transfer components> Next, the insulating sheet 91 and the heat transfer member 92 will be described.

[0064] <6.1 Insulating Sheet> Figure 9 is a perspective view showing a partially disassembled unit body 1. The insulating sheet 91 is an insulating member for electrically insulating the metal plate 80 from the busbars 42 of each subunit SU. The insulating sheet 91 is made of a synthetic resin such as polyester or polyimide and has insulating properties. When viewed from the Z direction, the insulating sheet 91 is rectangular in shape. The insulating sheet 91 is a sheet that lies along the horizontal direction. The insulating sheet 91 is placed between the flat portion 81 of the metal plate 80 (described later) and the wiring substrate 40 of each subunit SU. For example, the insulating sheet 91 is placed between the flat portion 81 of the metal plate 80 and a plurality of heat transfer members 92.

[0065] In this embodiment, the insulating sheet 91 is attached to the flat portion 81 of the metal plate 80. The insulating sheet 91 has notches or openings to avoid the fixing portions 82 and 83 of the metal plate 80, which will be described later. Alternatively, the insulating sheet 91 may be provided between the wiring substrate 40 of each subunit SU and the plurality of heat transfer members 92.

[0066] <6.2 Heat Transfer Components> The heat transfer member 92 is a member for transferring the heat generated by the electronic component 10 when energized, and / or the heat generated by the busbar 42 itself when energized, to the metal plate 80. The heat transfer member 92 is, for example, an elastic heat transfer sheet (e.g., a thermally conductive silicone sheet). However, the heat transfer member 92 is not limited to the above example and may be a heat transfer member formed from a thermally conductive gel or other material.

[0067] Figure 10 is a bottom view showing the wiring substrate 40. In this embodiment, the multiple heat transfer members 92 are partially provided on the wiring substrate 40. For example, the multiple heat transfer members 92 are positioned so as to overlap with a portion of the bus bar 42 when viewed from the Z direction. More specifically, the multiple heat transfer members 92 are positioned so as to overlap with a portion of the bus bar 42 near the electronic component 10 when viewed from the Z direction. In this embodiment, the multiple heat transfer members 92 are positioned so as to overlap with the connecting component 20 when viewed from the Z direction.

[0068] The heat transfer member 92 is positioned between the metal plate 80 and the busbar 42. The heat transfer member 92 transfers heat from the electronic component 10 to the busbar 42, and / or heat generated by the busbar 42, from the busbar 42 to the metal plate 80.

[0069] <7. Metal plate and insulating cover> Next, the metal plate 80 and the insulating cover 93 will be described.

[0070] <7.1 Metal Plate> As shown in Figure 9, the metal plate 80 covers the unit body 1 from the -Z direction. The metal plate 80 is a component that ensures the rigidity of the unit body 1 and improves the heat dissipation of the unit body 1. The metal plate 80 is made of metal (for example, aluminum or aluminum alloy). The metal plate 80 has higher rigidity than, for example, the insulating sheet 91. The metal plate 80 is an example of a "second cover". The metal plate 80 may also be called a "rigid member". The insulating cover 93, which will be described later, is attached to the metal plate 80.

[0071] The metal plate 80 is rectangular in shape when viewed from the Z direction, oriented along the X 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 end portions of the metal plate 80, separated in the X direction. The third end 80e3 and the fourth end 80e4 are a pair of transverse end portions of the metal plate 80, separated in the Y direction. The metal plate 80 includes, for example, a flat portion 81, a plurality of fixing portions 82, and a plurality of fixing portions 83.

[0072] The flat portion 81 is a plate-shaped part within the metal plate 80. The flat portion 81 is plate-shaped and oriented horizontally. The flat portion 81 forms the main part of the metal plate 80. The flat portion 81 forms the base (metal base) of the metal plate 80. In this embodiment, the flat portion 81 is large enough to cover the three subunits SU from below. The flat portion 81 faces the wiring substrate 40 of the three subunits SU.

[0073] The metal plate 80 has an outer peripheral overhang 89 that extends in the X and Y directions from the main body MU when viewed from the Z direction. The outer peripheral overhang 89 is the part to which the insulating cover 93, described later, is attached. In this embodiment, the outer peripheral overhang 89 is formed rising in the +Z direction from the outer periphery of the flat portion 81.

[0074] The fixing portion 82 is a fixing portion for fixing the base plate 41 of each subunit SU to the metal plate 80. When viewed from the Z direction, the fixing portion 82 is provided at a position corresponding to the fixing portion 52 of the base plate 41 of each subunit SU. The fixing portion 82 is a cylindrical or prismatic boss that protrudes in the +Z direction from the flat portion 81 of the metal plate 80.

[0075] The fixing portion 83 is a fixing portion for directly fixing the electronic components 10 of each subunit SU to the metal plate 80 without going through the base plate 41. When viewed from the Z direction, the fixing portion 83 is provided at a position corresponding to the mounting portion 14 of the electronic components 10 of each subunit SU. The fixing portion 83 is a cylindrical or prismatic boss that protrudes from the planar portion 81 in the +Z direction.

[0076] <7.2 Insulating Cover> Returning to Figure 1, the insulating cover 93 will be described. The insulating cover 93 is a component that ensures safety of the main body MU from the current-carrying path. The insulating cover 93 is an example of a "first cover". The insulating cover 93 is made of synthetic resin, for example, and has insulating properties. The insulating cover 93 covers the unit body 1 from the +Z direction. In this embodiment, the insulating cover 93 covers the entirety of the multiple subunits SU provided on the metal plate 80 from the +Z direction.

[0077] The insulating cover 93 is, for example, box-shaped with the -Z side open. That is, as shown in Figures 1 and 12, the insulating cover 93 integrally comprises a plate-shaped portion 95 and a peripheral wall portion 96. The plate-shaped portion 95 is provided at a distance from the metal plate 80 in the +Z direction. When viewed from the Z direction, the plate-shaped portion 95 has a rectangular plate shape aligned with the X direction. The plate-shaped portion 95 has a retaining surface 95f on the +Z direction side for holding the cable routing member 300, which will be described later.

[0078] The peripheral wall portion 96 rises from the outer periphery of the plate-like portion 95 in the -Z direction. The peripheral wall portion 96 has a first wall portion 96a, a second wall portion 96b, a third wall portion 96c, and a fourth wall portion 96d. The first wall portion 96a and the second wall portion 96b are separated in the X direction. Each of the first wall portion 96a and the second wall portion 96b extends in the Y direction when viewed from the Z direction. The third wall portion 96c and the fourth wall portion 96d are separated in the Y direction. Each of the third wall portion 96c and the fourth wall portion 96d extends in the X direction when viewed from the Z direction. The first wall portion 96a, the second wall portion 96b, the third wall portion 96c, and the fourth wall portion 96d that constitute the peripheral wall portion 96 surround the unit body 1 from the horizontal direction (X direction and Y direction).

[0079] The tip of the peripheral wall portion 96 is connected to the outer peripheral protrusion portion 89 of the metal plate 80 by appropriate connecting means such as fitting, screwing, bonding, or welding. As a result, the unit body 1 is covered by the insulating cover 93 and the metal plate 80.

[0080] As shown in Figure 11, the insulating cover 93 has a plurality of ventilation holes 95h in at least the plate-shaped portion 95. The plurality of ventilation holes 95h penetrate the plate-shaped portion 95 in the Z direction. In addition to the plate-shaped portion 95, the plurality of ventilation holes 95h may also be formed to penetrate the peripheral wall portion 96. Each ventilation hole 95h releases the heat generated by the electronic components 10 of the unit body 1 to the outside of the insulating cover 93.

[0081] As shown in Figures 1 and 11, the plate-shaped portion 95 has a plurality of connector housing holes 95z. The plurality of connector housing holes 95z penetrate the plate-shaped portion 95 in the Z direction. The plurality of connector housing holes 95z accommodate a plurality of relay connectors 320, which will be described later.

[0082] <8. Cable routing members> As shown in Figures 1, 11, and 12, the cable routing member 300 comprises a support 310 and a plurality of relay connectors 320. As shown in Figure 1, in this embodiment, the cable routing member 300 is positioned on the +Z side relative to the insulating cover 93. That is, the cable routing member 300 is provided outside the unit body 1. The cable routing member 300 is connected to external equipment, such as an inverter for driving the vehicle's motor and a charger for charging the battery pack, which are connected to the unit body 1.

[0083] The support 310 integrally supports multiple relay connectors 320. The support 310 is, for example, a flat plate and is made of a flexible substrate or a solid substrate. The support 310 is provided along the holding surface 95f of the plate-shaped portion 95. As shown in Figure 12, the support 310 has a predetermined wiring pattern 312.

[0084] Multiple relay connectors 320 are fixed to the surface 310f of the support 310 facing the -Z direction. When viewed from the Z direction, the multiple relay connectors 320 are housed in each of the multiple connector housing holes 95z. As shown in Figure 1, the multiple relay connectors 320 are provided at positions corresponding to the second connector 202 of the connector member 200. Specifically, the multiple relay connectors 320 are positioned opposite the second connector 202 of the connector member 200 provided on the multiple electronic components 10 in the Z direction. Each of the multiple relay connectors 320 is connected to the second end 202j of the second connector 202.

[0085] Multiple relay connectors 320 are insertable and removable in the +Z direction from the second connectors 202 of the multiple connector members 200. That is, each relay connector 320 is detachably connected to the corresponding second connector 202. Each relay connector 320 is either a so-called male connector or a female connector. In this embodiment, the relay connector 320 is, for example, a female connector. Each relay connector 320 is made of, for example, synthetic resin and has insulating properties. Each relay connector 320 holds multiple terminals (not shown) electrically connected to the wiring pattern 312 of the support 310.

[0086] Each relay connector 320 is formed in a shape that allows it to be inserted into and removed from the second end 202j of the second connector 202. Multiple relay connectors 320 are provided so as to be insertable and removable in the Z direction from each of the second end 202j of the multiple connector members 200. The second end 202j and the relay connector 320 are equipped with engaging claws (not shown) that can engage with each other when the second end 202j and the relay connector 320 are connected and each terminal of the second connector 202 and each terminal of the relay connector 320 are electrically connected.

[0087] As shown in Figures 11 and 12, in this embodiment, the support 310 of the routing member 300 is provided along at least a portion of the plate-shaped portion 95. In this embodiment, the support 310 is provided so as to cover only a portion of the plate-shaped portion 95, and not the entire plate-shaped portion 95. In this embodiment, the support 310 extends along the outer circumference of the plate-shaped portion 95 so as to overlap with a plurality of relay connectors 320 when viewed from the Z direction, for example. In this embodiment, the support 310 is formed in a U-shape when viewed from the Z direction, for example, and has a pair of extension portions 310a and 310b and a connecting portion 310c. The pair of extension portions 310a and 310b are provided at both ends of the plate-shaped portion 95 in the Y direction. Each of the pair of extension portions 310a and 310b extends in a belt-like manner in the X direction. The connecting portion 310c extends in a belt-like manner in the Y direction on one side in the X direction (for example, the -X direction side), connecting the ends of the pair of extending portions 310a and 310b. The shape of the support 310 when viewed from the Z direction is not limited to a U shape, but can be any shape. By providing the support 310 to cover only a part of the plate-shaped portion 95, as shown in Figure 11, multiple ventilation holes 95h are opened in the portion of the plate-shaped portion 95 that is not covered by the support 310. Furthermore, the multiple ventilation holes 95h are not formed in a position that overlaps with the support 310 of the cable routing member 300, but are formed at a position offset from the cable routing member 300 when viewed from the Z direction. The support 310 may also be provided to cover the entire plate-shaped portion 95.

[0088] Furthermore, the support 310 is positioned, when viewed from the Z direction, at a location offset from the heat-generating electronic components 10H of the unit body 1, such as relays. This configuration ensures that the support 310 is positioned above the heat-generating electronic components 10H. In addition, the wiring member 300 may have a heat dissipation opening 311 that penetrates the support 310 in the Z direction. In this case, the heat dissipation opening 311 may be another opening in the plate-shaped portion 95 that connects to another opening that penetrates in the Z direction. It is preferable that the heat dissipation opening 311 be formed near the electronic components 10H.

[0089] <9. Manufacturing method of the unit body> Next, we will explain how to manufacture the main unit 1. Figures 13 to 17 are cross-sectional views illustrating the manufacturing method of the unit body 1. The routing substrate 40 for each subunit SU is formed by insert molding or another method, integrating the base plate 41 with multiple busbars 42 while the fastening members 43 are fixed to the busbars 42. This integration ensures that the routing substrate 40 for each subunit SU is prepared in advance.

[0090] (1st step) Figure 13 shows the first step. In the first step, the connecting component 20 is fixed to the terminal 13 of the electronic component 10 using the fastening member 71. This fixing forms an assembly part SA in which the electronic component 10 and the connecting component 20 are integrated.

[0091] The first step is performed, for example, as follows: First, the electronic component 10 is placed on the mounting base MP with the mounting hole 13h of the terminal 13 of the electronic component 10 facing vertically. Next, the connecting component 20 is placed on top of the electronic component 10 with the first mounting hole 21h of the connecting component 20 facing vertically. Then, the first mounting hole 21h of the connecting component 20 and the mounting hole 13h of the terminal 13 of the electronic component 10 are aligned. The first step is performed with the electronic component 10 and the connecting component 20 in a first position. The first position is one in which the mounting hole 13h and the first mounting hole 21h are facing vertically.

[0092] Next, the fastening member 71 is inserted vertically into the first mounting hole 21h of the connecting component 20. The fastening member 71, having passed through the first mounting hole 21h of the connecting component 20, then engages with the mounting hole 13h of the terminal 13 of the electronic component 10. This engagement forms an integrated assembly part SA in which the electronic component 10 and the connecting component 20 are joined.

[0093] (2nd process) Figure 14 shows the second step. In the second step, the assembly components SA are fixed to the routing board 40 of each subunit SU. For example, the connecting component 20 included in the assembly component SA is fixed to the bus bar 42 included in the routing board 40. This fixing electrically connects the electronic component 10 and the bus bar 42.

[0094] The second step is carried out, for example, as follows: As described above, in the cable routing base plate 40, the fastening member 43 is fixed to the bus bar 42. The fastening member 43 protrudes vertically from the bus bar 42. The assembly part SA is then placed on the cable routing base plate 40 by inserting the fastening member 43 vertically into the second mounting hole 22h of the second connection portion 22 of the connecting part 20. Next, the engaging member 44 (for example, a nut) is engaged with the upper end of the fastening member 43 from the vertical direction. This engagement fixes the second connection portion 22 of the connecting part 20 included in the assembly part SA to the bus bar 42. This fixing completes each subunit SU.

[0095] (3rd step) Figure 15 shows the third step. In the third step, each subunit SU is attached to the metal plate 80. The third step is carried out, for example, as follows: First, an insulating sheet 91 is attached to the surface of the flat portion 81 of the metal plate 80. Next, a heat transfer member 92 is fixed to the lower surface of each subunit SU with an adhesive or the like. Next, each subunit SU is placed on the metal plate 80 with the insulating sheet 91 and the heat transfer member 92 interposed between them. Then, the fixing portion 52 of each subunit SU is fixed to the fixing portion 82 of the metal plate 80 with a fastening member 111.

[0096] (4th step) Figure 16 shows the fourth step. In the fourth step, the mounting portion 14 of the electronic component 10 of each subunit SU is fixed to the fixing portion 83 of the metal plate 80 using the fastening member 112. In the fourth step, the connector member 200 is connected to the connector connection portion 17 of the electronic component 10. Note that the fourth step may be performed in conjunction with the third step.

[0097] (5th step) Figure 17 shows the fifth step. Prior to performing the fifth step, the cable routing member 300 and the insulating cover 93 are integrated. In the fifth step, the insulating cover 93 with the cable routing member 300 attached is mounted to the metal plate 80 along the vertical direction. At this time, the multiple relay connectors 320 of the cable routing member 300 are connected to the second portion 205b of each connector member 200. In this state, the assembly of the electrical connection unit 100 is completed.

[0098] <10. Advantages> In this embodiment, the electrical connection unit 100 includes an insulating cover 93 that covers the unit body 1 from the +Z direction, and a metal plate 80 that covers the unit body 1 from the -Z direction and to which the insulating cover 93 is attached. Furthermore, a wiring member 300 having a relay connector 320 that is connected to the electronic component 10 via a connector member 200 is provided integrally with the insulating cover 93. With this configuration, since the wiring member 300 and the insulating cover 93 are integrated, the attachment of the insulating cover 93 to the metal plate 80 and the attachment of multiple relay connectors 320 to the connector member 200 can be performed simultaneously. As a result, the ease of assembly of the electrical connection unit 100 can be improved.

[0099] In this embodiment, the metal plate 80 is plate-shaped and has higher rigidity than the base plate 41. The insulating cover 93 has a plate-shaped portion 95 having a retaining surface 95f for holding the cable routing member 300, and a peripheral wall portion 96 that rises in the -Z direction from the outer periphery of the plate-shaped portion 95 and is connected to the metal plate 80. With this configuration, the insulating cover 93 and the metal plate 80 can form a robust housing for housing the unit body 1.

[0100] In this embodiment, the insulating cover 93 has a plurality of ventilation holes 95h in at least the plate-shaped portion 95. With this configuration, heat from the electronic components 10 can be released to the outside of the insulating cover 93 through the ventilation holes 95h. As a result, the operational stability of the unit body 1 can be improved.

[0101] In this embodiment, the multiple ventilation holes 95h are formed at positions offset from the cable routing member 300 when viewed from the Z direction. With this configuration, the influence of heat released from the ventilation holes 95h on the cable routing member 300 is suppressed.

[0102] In this embodiment, the plate-shaped portion 95 has multiple connector housing holes 95z into which each of the multiple relay connectors 320 is inserted. With this configuration, the multiple relay connectors 320 can be positioned relative to the plate-shaped portion 95 of the insulating cover 93. As a result, when attaching the insulating cover 93 to the metal plate 80, the multiple relay connectors 320 can be easily connected to the second ends 202j of the multiple connector members 200, improving ease of assembly.

[0103] In this embodiment, the cable routing member 300 has a heat dissipation opening 311 that penetrates the support 310 in the Z direction. With this configuration, heat from the electronic components 10 can be released through the heat dissipation opening 311 of the cable routing member 300. As a result, the operational stability of the unit body 1 can be further improved.

[0104] In this embodiment, the cable routing member 300 is positioned offset from the heat-generating electronic component 10H when viewed from the Z direction. With this configuration, the heat from the heat-generating electronic component 10H is less likely to affect the cable routing member 300. As a result, the operational stability of the unit body 1 can be further improved.

[0105] <10. Variation> Next, we will describe some variations. Note that, apart from the configurations described below, the configurations in each variation are the same as those of the embodiments described above.

[0106] In the above-described embodiment, the cable routing member 300 is provided on the +Z direction side relative to the insulating cover 93, but the invention is not limited to this configuration. For example, as shown in Figure 18, the cable routing member 300 may be provided on the -Z direction side of the insulating cover 93. In other words, the cable routing member 300 may be housed inside the unit body 1.

[0107] Several embodiments and modifications have been described above. However, the embodiments and modifications are not limited to the examples described above. For example, multiple embodiments may be implemented in combination with each other. [Explanation of symbols]

[0108] 1 Unit body 10 Electronic Components 10A Electronic Components 10B Electronic Components 10H Electronic Components 10X Electronic Components 10Y Electronic Components 10Z Electronic Components 13 terminals 17 Connector connection section 41 Base plate (base component) 42 Bus Bar 51 Plane part 80 Metal plate (second cover) 81 Plane section 93 Insulating cover (first cover) 95 Plate-like part 95f holding surface 95h ventilation holes 95z connector housing hole 96 Peripheral wall section 100 Electrical Connection Units 200 Connector components 201 First Connector 202 Second connector 300 Cable routing member 310 Support 311 Heat dissipation opening 320 relay connectors

Claims

1. The main unit and A first cover that covers the unit body from the first side in the first direction, The unit body is covered from the second side in the first direction, and the second cover to which the first cover is attached is provided. The unit comprises a wiring member provided integrally with the first cover and detachably connected to the unit body, The unit body is, An insulating base member including a plate-shaped or sheet-shaped flat portion, A conductive busbar held in the aforementioned planar portion, A plurality of electronic components are provided on the first side in the first direction with respect to the base member, each having a terminal electrically connected to the busbar and a connector connection portion, A plurality of connector members, each having a first connector detachably connected to the connector connection portion and a second connector arranged in the first direction, Equipped with, The aforementioned cable routing member is When viewed from the first direction, a plurality of intermediate connectors are provided at positions corresponding to the second connectors of the plurality of connector members, and can be inserted into and removed from the second connectors of the plurality of connector members in the first direction, A support body that integrally supports the aforementioned multiple relay connectors, Equipped with, Electrical connection unit.

2. The second cover is plate-shaped and has higher rigidity than the base member. The first cover is, A plate-shaped portion is provided with a gap in the first direction relative to the second cover and has a retaining surface for holding the cable routing member, The plate-like portion has a peripheral wall portion that rises from the outer periphery to the second side in the first direction and is connected to the second cover. The electrical connection unit according to claim 1.

3. The first cover has at least a plurality of ventilation holes in the plate-like portion, The electrical connection unit according to claim 2.

4. The multiple ventilation holes are formed at positions offset from the cable routing member when viewed from the first direction. The electrical connection unit according to claim 3.

5. The plate-like portion has a plurality of connector housing holes that penetrate the plate-like portion in a first direction, into which each of the plurality of relay connectors is inserted. The electrical connection unit according to claim 2 or 3.

6. The cable routing member has a heat dissipation opening that penetrates the support in the first direction. The electrical connection unit according to claim 1 or 2.

7. The cable routing member is provided at a position offset from the heat-generating electronic component when viewed from the first direction. The electrical connection unit according to claim 1 or 2.

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