JP2019172130A - Connection structure of on-vehicle power trunk line bus bars and electronic component module, and connection structure of on-vehicle power trunk line bus bars - Google Patents

Abstract

To provide a connection structure or the like of an on-vehicle power trunk line bus bars and an electronic component module which can be efficiently installed to an automobile.SOLUTION: A connection hole 17 is severally formed at a predetermined position of conductor parts of a pair of bus bars 5a,5b. Positions of the connection hole 17 are aligned and the bus bars 5a,5b are overlapped. Further, a connecting protrusion part 15 of an electronic component module 7 is inserted into the connection holes 17 which are overlapped at the same position, and the connecting protrusion part 15 is fixed to a conductor plate part 13 by a nut 19, by which the electronic component module 7 is fixed to the bus bars 5a,5b. In other words, the electronic component module 7 is arranged for an overlapping part of a connection part between the bus bars 5a,5b, the connecting protrusion part 15 penetrates a plurality of the bus bars 5a,5b, and the bus bars are connected. As described, the bus bars 5a,5b and the electronic component module 7 are connected and fixed by the nut 19 which is screwed on a male screw part 15a of the connecting protrusion part 15, and the bus bars 5a,5b and the electronic component module 7 conduct with each other.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a connection structure between an in-vehicle power trunk bus bar and an electronic component module in an automobile.

  Many electric parts such as electric devices driven by electricity and sensors for performing various controls are used in automobiles. Such an electrical component is connected to a battery as a power supply source via various electric wires as a power line or a signal line.

  On the other hand, mechanical relays are limited in arrangement in the vehicle interior due to problems such as operating noise and replacement. For this reason, the fuse relay BOX etc. to each electric component are arrange | positioned, for example in an engine room etc., and are connected to each electronic component with an electric wire via the fuse relay BOX (for example, patent document 1).

JP 2003-137004 A

  FIG. 9 is a conceptual diagram showing the configuration of power distribution in the conventional vehicle 100. In the engine room, a power distribution box 104 connected to the battery 103 is arranged. The power distribution BOX 104 houses a fuse relay or the like that distributes power to each electrical component 105 used in the vehicle 100. The power distribution BOX 104 is connected to each electrical component 105 via the electric wire 101. As described above, conventionally, for example, the electric wires 101 are laid from the power distribution box 104 in the engine room to the electric components 105.

Normally, a coated conductor with an insulation coating is used as the electric wire 101, and the electric wire 101 is connected from the power distribution box 104 for each electric component. The current value allowed for the cross-sectional area of the coated conductor is determined. If the value exceeds this value, there is a problem that the coating burns.

  However, in recent years, the number of electrical components 105 used in automobiles has increased. Further, as described above, since it is necessary to lay the electric wires 101 for each electric component, an increase in the number of the electric wires 101 and an increase in the length are problematic. For example, when the electric component 105 is arranged at a position away from the power distribution box 104, the electric wire 101 becomes longer. Thus, when the electric wire 101 increases and becomes long, the laying work causes a decrease in efficiency. Further, it is not easy to replace the wire 101 when the wire 101 is broken.

  On the other hand, a method using an in-vehicle power trunk bus bar of the vehicle 100 has been proposed. The in-vehicle power trunk bus bar is, for example, an integral plate-like conductor having a rectangular cross section, and an allowable current value is extremely high as compared with an electric wire. For this reason, it is possible to shorten the length of each electric wire 101 by distributing power from the in-vehicle power trunk bus bar to each electric device, and it is possible to reduce the weight by performing more efficient power distribution. is there.

  However, when branching the electric wire 101 from such a vehicle-mounted power trunk bus bar, it is necessary to connect an electronic component module such as a fuse relay, for example. However, in order to connect an electronic component module such as a fuse relay to the in-vehicle power trunk bus bar, it is necessary to remove the insulation coating from the in-vehicle power trunk bus bar, which increases the number of work steps.

  Moreover, since the electric wire 101 is soft, it can be bent repeatedly. However, since the on-vehicle power trunk bus bar has high rigidity, it is difficult to bend and use it when installing an automobile. However, the in-vehicle power trunk bus bar bent in advance is poor in handling and difficult to lay.

  For this reason, when installing a vehicle-mounted power trunk bus bar in an automobile, it is desirable to divide the vehicle-mounted power trunk bus bar into a plurality of parts in consideration of weight, manufacturability, and laying ease. For example, it is easier to install two short (for example, 1 m) in-vehicle power trunk bus bars than one in-vehicle power trunk bus bar that is bent 90 degrees (for example, the total length is 2 m). However, even in the connection portion of the in-vehicle power trunk bus bar divided into a plurality of parts as described above, it is necessary to remove the insulation coating of the in-vehicle power trunk bus bar, and the number of work steps increases.

  The in-vehicle power trunk bus bar is, for example, an integral plate-like conductor having a rectangular cross section. However, the above-described in-vehicle power trunk bus bar is also applicable to a flat electric wire that is flat as a whole by bringing a plurality of metal wires together. There are similar issues. And the structure of this invention has the same effect also in a flat electric wire.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a connection structure between an in-vehicle power trunk bus bar and an electronic component module that can be efficiently installed in an automobile.

  In order to achieve the above-mentioned object, the first invention is a connection structure between an in-vehicle power trunk bus bar and an electronic component module, in which a plurality of the in-vehicle power trunk bus bars are connected to each other, and in the vicinity of a connection portion between the in-vehicle power trunk bus bars. The electronic component module is connected to the vehicle-mounted power trunk bus bar and the electronic component module.

  The electronic component module may be disposed on the same surface as a contact surface between the in-vehicle power trunk bus bars.

  It is desirable that the in-vehicle power trunk bus bar has an insulating coating on at least the side opposite to the contact surface with the electronic component module.

  The in-vehicle power trunk bus bar has a connection hole formed in a conductor portion, the electronic component module has a connection convex portion that is electrically connected to the electronic component, and the connection convex portion is inserted into the connection hole. It is desirable that the vehicle-mounted power trunk bus bar is electrically connected to the electronic component module.

  The electronic component module preferably includes a conductor plate portion and a module portion, the conductor plate portion extends from the module portion, and the connection convex portion is formed on the conductor plate portion.

  The connection convex part and the module part may be formed in the same plane direction with respect to the conductor plate part.

  It is desirable that the conductor plate portion is insulated and coated at least on the side opposite to the contact surface with the in-vehicle power trunk bus bar.

  At least a part of a connection portion between the conductor plate portion and the in-vehicle power trunk bus bar may overlap with the module portion.

  The connection convex portion has a male screw portion, and the in-vehicle power trunk bus bar and the electronic component module are connected and fixed by a nut that is screwed to the connection convex portion, and the nut has at least a surface insulating cap nut. It is desirable that

  The electronic component module may be disposed in a non-overlapping portion of a connection portion between the in-vehicle power trunk bus bars.

  The electronic component module is disposed in an overlapping portion of the connection portions between the in-vehicle power trunk bus bars, and a connection member for connecting the in-vehicle power trunk bus bars to each other, and a connection for connecting the electronic component module and the in-vehicle power trunk bus bar. The member may be a separate body.

  The electronic component module is disposed in an overlapping portion of connection portions between the in-vehicle power trunk bus bars, and the connection convex portion passes through the plurality of in-vehicle power trunk bus bars and the in-vehicle power trunk bus bars are connected to each other. Good.

  The electronic component module is disposed in an overlapping portion of the connection portions between the in-vehicle power trunk bus bars, and a plurality of the in-vehicle power trunk bus bars and a connection member that penetrates the electronic component module, the in-vehicle power trunk bus bars and the electronic A component module may be connected.

  It is desirable that the electronic component module is disposed on the side where the crossing angle between the in-vehicle power trunk bus bars is small in the connection portion between the in-vehicle power trunk bus bars.

  The electronic component module is preferably a semiconductor fuse.

  According to the first aspect, since the electronic component module is connected to the in-vehicle power trunk bus bar in the vicinity of the connection portion between the in-vehicle power trunk bus bars, the respective connection portions are close to each other. For this reason, what is necessary is just to remove | eliminate one insulation coating of a vehicle-mounted power trunk line bus bar so that each connection part may be included. Therefore, the total number of parts from which the insulation coating is removed can be reduced as compared with the case where the connection part between the in-vehicle power trunk bus bars and the connection part between the electronic component module and the in-vehicle power trunk bus bar are separate parts. . As a result, the manufacturing cost for peeling off the insulation coating can be reduced. Further, the reliability of the system may be lowered at the portion where the insulating coating is removed, but the reliability of the system can be improved by reducing the number of portions for removing the insulating coating.

  In addition, by disposing the electronic component module on the same surface as the contact surface between the in-vehicle power trunk bus bars, it is only necessary to remove the insulation coating on one surface of the in-vehicle power trunk bus bar, and the insulation coating can be easily removed. .

  Moreover, high insulation can be ensured by carrying out insulation coating of the vehicle-mounted power trunk line bus bar of the surface opposite to the contact surface with an electronic component module.

  By forming a connection hole in the in-vehicle power trunk bus bar, forming a connection projection on the electronic component module side, and inserting it into the connection hole, the electronic component module can be easily connected to the in-vehicle power trunk bus bar. Moreover, since it is not necessary to form the connection convex portion on the in-vehicle power trunk bus bar side, the connection convex portion does not get in the way when laying the in-vehicle power trunk bus bar. In addition, by forming a connection hole in a predetermined place in the in-vehicle power trunk bus bar in advance, an electronic component module may be connected to the connection hole as necessary, and the degree of freedom of arrangement of the electronic component module is also improved. high.

  In addition, by extending the conductor plate portion of the electronic component module from the module portion and forming the connection convex portion on the conductor plate portion, the conductor plate portion of the electronic component module and the in-vehicle power trunk bus bar are more reliably connected. be able to. For example, it is easy to bring the conductor plate portion of the electronic component module into surface contact with the in-vehicle power trunk bus bar.

  Moreover, if the connection convex part and the module part are formed in the same direction with respect to the conductor plate part, the overall height of the connection part between the in-vehicle power trunk bus bar and the electronic component module can be reduced.

  Moreover, high insulation can be ensured by insulation-coating the conductor board part on the opposite surface side of a contact surface with a vehicle-mounted power trunk bus bar.

  In addition, by arranging at least a part of the connection part between the conductor plate part and the in-vehicle power trunk bus bar so as to overlap the module part in plan view, the heat generated from the module part can be more efficiently transferred to the in-vehicle power trunk bus bar. Heat can be transferred.

  In addition, by forming the male screw portion on the connection convex portion, the in-vehicle power trunk bus bar and the electronic component module can be easily connected with a nut. At this time, if the nut is a cap nut having at least an insulating surface, high insulation at the connecting portion can be ensured.

  Moreover, the height of the whole connection part can be made low by arrange | positioning an electronic component module in the site | part which is not an overlap part of the connection part of vehicle-mounted power trunk line bus bars. Moreover, since the site | part which connects vehicle-mounted power trunk bus bars and connects and the site | part which connects an electronic component module to a vehicle-mounted power trunk bus bar are different positions, connection workability | operativity is favorable. In addition, since the connection member that connects the in-vehicle power trunk bus bars and the connection member that connects the electronic component module and the in-vehicle power trunk bus bar are different, connection members and connection conditions suitable for each connection part can be applied, High reliability of connection.

  Moreover, even when arrange | positioning an electronic component module in the overlapping part of the connection part of vehicle-mounted power trunk bus bars, the connection member which connects vehicle-mounted power trunk bus bars, and the connection member which connects an electronic component module and vehicle-mounted power trunk bus bar As described above, the connection workability is good. Further, as described above, connection members and connection conditions suitable for each connection part can be applied, and the reliability of the connection part is high. Moreover, the heat dissipation of an electronic component module can be improved by arrange | positioning an electronic component module in an overlap part.

  In addition, if the electronic component module is arranged in the overlapping part of the connection parts between the in-vehicle power trunk bus bars and the connection convex part penetrates through the plurality of in-vehicle power trunk bus bars, the in-vehicle power trunk bus bars are connected to each other. One hole is sufficient, and the work is easy because only one installation is required. Moreover, the heat dissipation of an electronic component module can be improved by arrange | positioning an electronic component module in an overlap part.

  In this case, the same effect can be obtained even if the on-board power trunk bus bars are connected to the electronic component module by one connection member without forming the connection convex portion on the electric component module.

  Moreover, if the electronic component module is arranged on the side where the in-vehicle power trunk bus bar has a small crossing angle between the in-vehicle power trunk bus bars, the electronic component module does not protrude outside the laying line of the in-vehicle power trunk bus bar. In addition, the electronic component module can be efficiently arranged.

  In addition, if the electronic component module is a semiconductor fuse, there will be no operating noise unlike conventional mechanical relays. As a result, the electronic component module can be arranged outside the power distribution box.

  2nd invention is the connection structure of the vehicle-mounted power trunk bus bar used for the connection structure of the vehicle-mounted power trunk bus bar and electronic component module concerning 1st invention, Comprising: A plurality of said vehicle-mounted power trunk bus bars are connected, A connection structure for an in-vehicle power trunk bus bar, wherein the electronic component module has a connection hole in the vicinity of a connection portion between the in-vehicle power trunk bus bars.

  An insulating member may be disposed so as to cover the connection portion between the in-vehicle power trunk bus bars and the connection hole.

  According to the second invention, the same effect as the first invention can be obtained.

  In addition, by disposing the insulating member so as to cover the connection part and the hole between the in-vehicle power trunk bus bars, for example, when the hole is used or not used depending on the option of the vehicle, By insulatingly coating the part in advance, insulation can be ensured when holes are not used.

  ADVANTAGE OF THE INVENTION According to this invention, the connection structure of the vehicle-mounted power trunk line bus bar and electronic component module etc. which can be efficiently installed in a motor vehicle can be provided.

1 is a diagram showing a power distribution structure in a vehicle 1. The disassembled perspective view which shows the connection structure 10 in the A section of FIG. FIG. 3 is an assembled perspective view showing the connection structure 10. (A) is a top view of the connection structure 10, (b) is the BB sectional drawing of (a). The top view of the connection structure 10a. The disassembled perspective view which shows the connection structure 10b. (A) is a top view of the connection structure 10b, (b) is CC sectional view taken on the line of (a). (A) is sectional drawing of the connection structure 10c, (b) is sectional drawing of the connection structure 10d. The figure which shows the power distribution structure in the conventional vehicle 100. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a distribution structure of a power source or the like in the vehicle 1. As illustrated, the battery 3 is connected to a bus bar 5 that is an in-vehicle power trunk bus bar. The bus bar 5 is fixed to the vehicle 1. In the present invention, the in-vehicle power trunk bus bar is directly connected to the battery 3 and almost all current flows from the battery 3, and a current having a maximum current value of 100 A or more flows for a certain period of time.

The bus bar 5 is, for example, a plate-like member having a rectangular cross section, and is made of metal (including an alloy) such as copper or aluminum. The bus bar 5 has an extremely large allowable current as compared with a normal electric wire. For example, in the case of the bus bar 5 having a thickness of 5 mm × 60 mm (cross-sectional area 300 mm ² ), the allowable current is 400 A, which is sufficient for each electrical component 9 mounted on the vehicle 1. The cross-sectional shape and size of the bus bar 5 are set according to the current value and the space of the installation location. As illustrated, a plurality of linear bus bars 5 are arranged in accordance with the arrangement of the electrical components 9, and the plurality of bus bars 5 are connected to each other at a bent portion or a branch portion.

  An electronic component module 7 is connected to the bus bar 5. The electronic component module 7 is a power distribution BOX, such as a circuit board including a semiconductor fuse. That is, the bus bar 5 has a structure for connecting the battery 3 and each power distribution BOX. Each electrical component 9 is connected to the electronic component module 7 by an electric wire 11. Here, in this embodiment, the electronic component module 7 is connected in the vicinity of the connection portion between the bus bars 5. In addition, the vicinity of connection parts includes the site | part of connection part itself.

  Next, a connection structure between the bus bar 5 and the electronic component module 7 according to the present invention will be described. FIG. 2 is a diagram showing a connection structure at a portion A in FIG. 1, and is an exploded perspective view showing a connection structure 10 between the bus bars 5 a and 5 b and the electronic component module 7. 3 is an assembly perspective view showing the connection structure 10, FIG. 4A is a plan view of the connection structure 10, and FIG. 4B is a cross-sectional view taken along the line BB of FIG. 4A.

  The electronic component module 7 includes a conductor plate part 13 and a module part 14. As described above, the module unit 14 shows an example of functioning as a power distribution BOX made of a semiconductor fuse. However, for example, a relay function that cuts off or conducts an electric circuit formed on a circuit board, a constant current flowing through the electric circuit, A fuse function that cuts off the electric circuit when the time integral value of the time exceeds a predetermined integral value, a voltage monitoring function that outputs a reset signal when the voltage of the electric circuit falls below a predetermined voltage value, a filter function that removes noise flowing in the electric circuit, In addition, a functional circuit that constitutes a backup capacitor function that supplies power when the power is shut off may be mounted.

  The conductor plate portion 13 extends from the module portion 14. That is, the conductor plate portion 13 protrudes to one side of the module portion 14 in plan view. The conductor plate portion 13 functions as a power supply to the module portion 14 and a heat radiating plate of the module portion 14. For this reason, it is desirable that the conductor plate portion 13 is in contact with the entire surface with respect to a predetermined one surface of the module portion 14.

  The conductive plate portion 13 is formed with a connection convex portion 15 that is electrically connected to the electronic component and has a male screw portion 15a. That is, the connection convex part 15 is provided in a part of the electronic component module 7. The connection convex portion 15 is formed in the same plane direction as the module portion 14 with respect to the conductor plate portion 13. That is, in this embodiment, the connection convex part 15 is arrange | positioned in the position different from the module part 14 in planar view. A male screw portion 15 a is formed on the connection convex portion 15.

  Connection holes 17 are formed at predetermined positions in the conductor portions of the pair of bus bars 5a and 5b to be connected. The bus bars 5a and 5b are overlapped with each other by aligning the positions of the connection holes 17. Further, the connection convex portion 15 of the electronic component module 7 is inserted into the connection hole 17 overlapped at the same position, and the connection convex portion 15 is fixed to the conductor plate portion 13 with the nut 19 so that the electronic component module 7 is connected to the bus bar. It is fixed to 5a, 5b. In the illustrated example, the bus bars 5a and 5b are overlapped, the connection convex portion 15 is inserted from below the bus bar 5b, and the conductor plate portion 13, the bus bar 5b, and the bus bar 5a are stacked in this order. That is, the electronic component module 7 is disposed at an overlapping portion of the connection portions between the bus bars 5a and 5b, and the connection convex portion 15 passes through the plurality of bus bars 5a and 5b so that the bus bars are connected to each other.

  Here, the mutually opposing surfaces of the conductor portions of the bus bars 5a and 5b and the conductor plate portion 13 of the electronic component module 7 are flat. For this reason, when the connection convex part 15 is inserted into the connection hole 17 and fixed with the nut 19, the bus bars 5 a and 5 b and the bus bar 5 b and the conductor plate part 13 come into surface contact. As described above, the bus bars 5a and 5b and the electronic component module 7 are connected and fixed by the nut 19 that is screwed into the male screw portion 15a of the connection convex portion 15, and the bus bars 5a and 5b and the electronic component module 7 are electrically connected.

  In addition, as shown in FIG.4 (b), as for the connection structure 10, insulation coating is made | formed to the exposed surface of a conductor as much as possible. For example, the conductor portion of the bus bar 5a is covered with the insulating coating 6 except for the contact portion with the bus bar 5b. The conductor portion of the bus bar 5b is covered with an insulating coating 6 except for the contact portion with the bus bar 5a and the contact portion with the conductor plate portion 13. That is, in the bus bar 5b, the insulating coating 6 is removed at least in the vicinity of the connection hole 17 on the contact surface with the conductor plate portion 13 and in the vicinity of the connection hole 17 on the contact surface with the bus bar 5a. In addition, the insulating coating 6 is removed from the bus bar 5a in the vicinity of the connection hole 17 on the contact surface with the bus bar 5b.

  An insulating coating 13a is formed on at least the surface of the conductor plate 13 opposite to the contact surface with the bus bar 5b. The nut 19 is a cap nut having at least an insulating surface. By doing in this way, the outer surface of the connection structure 10 can be insulation-coated. The insulating coating 6 can be easily formed on the bus bars 5a and 5b by applying an insulating material with a mask in advance on a portion where the conductor is exposed. In order to further improve the insulation and protect the connection structure 10, the entire connection structure may be covered with an insulating cover.

  Note that the conductor plate portion 13 may be sandwiched between the bus bars 5a and 5b by changing the stacking order of the bus bars 5a and 5b and the conductor plate portion 13. In this case, since both surfaces of the conductor plate portion 13 are contact surfaces with the bus bars 5a and 5b, the insulating coating 13a is not formed on the contact portions. Further, an insulating coating 6 is formed on at least the surface opposite to the contact surface with the conductor plate portion 13 of each of the bus bars 5a and 5b.

  As described above, according to the present embodiment, the length of the electric wire 11 to each electrical component 9 can be shortened by connecting to the electronic component module 7 using the bus bars 5a and 5b. In addition, by overlapping and connecting a plurality of bus bars 5a and 5b, there is no need to bend the bus bars 5a and 5b into the laying layout shape, and the layout freedom is high and the laying work is easy.

  Moreover, since the connection part of bus bar 5a, 5b and the position of the connection part of bus bar 5b and the electronic component module 7 are near, and each connection part can be arrange | positioned in the same insulating-film removal part, bus bar 5a, 5b The number of removed portions of the insulating coating 6 can be reduced. Moreover, since the connection hole 17 is used for the connection between the bus bars 5a and 5b and the connection with the electronic component module 7, the number of connection holes can be reduced.

  Further, by forming the connection holes 17 in the bus bars 5a and 5b and forming the connection protrusions 15 in the electronic component module 7, the bus bars 5a and 5b and the electronic component module 7 can be easily connected. At this time, by forming the connection hole 17 on the bus bar 5a, 5b side, no protrusion is formed on the bus bar 5a, 5b, and the protrusion does not get in the way when the bus bars 5a, 5b are provided.

  Moreover, the connection between the bus bars 5a and 5b and the connection with the electronic component module 7 are performed by the connection convex portion 15 so that the connection between the bus bars 5a and 5b and the connection with the electronic component module 7 are performed simultaneously. Can do. At this time, it is possible to easily connect with the nut 19 by forming the male screw portion 15 a on the connection convex portion 15.

  In addition, by forming the conductor plate portion 13 in the electronic component module 7, it is possible to secure a contact area with the bus bars 5 a and 5 b and to transfer heat generated in the module portion 14 via the conductor plate portion 13. Heat can be efficiently transferred to 5a and 5b.

  Moreover, insulation can be ensured by insulation-coating each part in each connection part with respect to the bus bars 5a and 5b and the conductor plate part 13 of the electronic component module 7.

  Next, a second embodiment will be described. FIG. 5 is a plan view showing a connection structure 10a between the bus bar 5 and the electronic component module 7 according to the second embodiment. In the following description, components having the same functions as those of the first embodiment are denoted by the same reference numerals as those in FIGS. 1 to 4 and redundant descriptions are omitted.

  The connection structure 10a has substantially the same configuration as the connection structure 10, but the arrangement of the electronic component modules 7 is different. As described above, in the present embodiment, a plurality of bus bars 5a and 5b are connected. At this time, the plurality of bus bars 5a and 5b are connected at a predetermined intersection angle. Here, as shown in FIG. 5, when the plurality of bus bars 5a and 5b intersect so as to be substantially orthogonal to each other, the intersection angle is about 90 ° as an inner angle and about 270 ° as an outer angle. In the present embodiment, the electronic component module 7 is disposed on the side where the crossing angle between the bus bars 5a and 5b is small.

  According to the second embodiment, an effect similar to that of the first embodiment can be obtained. Further, the electronic component module 7 does not protrude outside the intersecting portion of the bus bars 5a and 5b, and a compact connection structure 10a can be obtained.

  Next, a third embodiment will be described. FIG. 6 is an exploded perspective view showing a connection structure 10b between the bus bars 5a and 5b and the electronic component module 7 formed according to the present embodiment. FIG. 7A is a plan view of the connection structure 10b, and FIG. ) Is a cross-sectional view taken along line CC of FIG.

  The connection structure 10b is substantially the same as the connection structure 10, but the form of the electronic component module 7 is different. In the electronic component module 7 in the connection structure 10 b, the connection convex portion 15 and the module portion 14 are formed in opposite directions with respect to the conductor plate portion 13.

  The connection convex part 15 is arrange | positioned in the approximate center of the module part 14 in planar view, for example. That is, the position of the connection convex part 15 and the module part 14 overlaps in planar view.

  Similar to the connection structure 10, the connection structure 10 b has the connection holes 17 aligned to overlap the bus bars 5 a and 5 b, and the connection protrusions 15 of the electronic component module 7 overlapped at the same position. Is inserted. By fixing the connection convex part 15 with the nut 19, the electronic component module 7 is fixed to the bus bars 5a and 5b.

  The width of the electronic component module 7 and the width of the bus bars 5a and 5b may be the same or different. It is desirable that the width of the conductor plate portion 13 and the width of the bus bars 5a and 5b are substantially the same. In other words, it is desirable that the conductor plate portion 13 does not protrude from the bus bars 5a and 5b, and the substantially entire conductor plate portion 13 is in surface contact with the bus bar 5b.

  In the connection structure 10b, at least a part of the connection portion between the conductor plate portion 13 and the bus bars 5a and 5b overlaps the module portion 14 in plan view. In the illustrated example, the entire connection portion between the conductor plate portion 13 and the bus bars 5a and 5b overlaps the module portion 14 in plan view. By doing in this way, the heat which generate | occur | produced in the module part 14 can be efficiently transmitted to the bus bars 5a and 5b, and heat dissipation can be improved.

  In addition, as long as the bus bars 5a and 5b and the electronic component module 7 can be connected together, the electronic component module 7 does not necessarily have the connection convex part 15. FIG. In this case, holes are formed in the conductor plate portion 13 of the electronic component module 7, and the connection holes 17 of the bus bars 5a and 5b and the holes of the electronic component module 7 are overlapped to form connection members such as bolts and nuts. You may connect the whole. That is, the electronic component module 7 is disposed in an overlapping portion of the connection portions between the bus bars 5a and 5b, and the bus bars 5a and 5b and the electronic component module 7 are connected to each other by the connection member penetrating the bus bars 5a and 5b and the electronic component module 7. May be connected.

  According to the third embodiment, the same effect as that of the first embodiment can be obtained. Moreover, heat dissipation can be improved by arrange | positioning at least one part of the module part 14 so that it may overlap with the bus bars 5a and 5b in planar view.

  Next, a fourth embodiment will be described. Fig.8 (a) is sectional drawing which shows the connection structure 10c concerning 4th Embodiment. The connection structure 10c is substantially the same structure as the connection structure 10, but the arrangement of the electronic component modules 7 is different.

  In the connection structure 10c, the electronic component module 7 is disposed in a non-overlapping portion of the connection portion between the bus bars 5a and 5b. In the illustrated example, the bus bar 5a and the electronic component module 7 are provided side by side on the bus bar 5b. That is, the electronic component module 7 is disposed on the same surface of the bus bar 5b as the contact surface with the bus bar 5a.

  The bus bars 5a and 5b are provided with connection holes 17a which are mutual connection holes. That is, in the bus bar 5b, a connection hole 17a that is a connection hole to the bus bar 5a is formed separately from the connection hole 17 to the electronic component module 7. The bus bars 5a and 5b are overlapped with each other by aligning the positions of the connection holes 17a, and the bolts 18 are inserted and fixed with the nuts 19a, thereby joining the bus bars 5a and 5b. At this time, if the insulating layer is formed on at least the surface of the bolt 18 and the nut 19a, and the nut 19a is a cap nut, the insulation of the connecting portion of the bus bars 5a and 5b can be secured.

  According to the fourth embodiment, the same effect as that of the first embodiment can be obtained. In addition, by disposing the electronic component module 7 on the same surface as the contact surface of the bus bar 5b with the bus bar 5a, the insulating coating 6 on the opposite surface of the bus bar 5b to the contact surface with the bus bar 5a and the conductor plate portion 13 is provided. There is no need to remove it.

  Moreover, the height of the whole connection part can be made low by arrange | positioning the electronic component module 7 in the site | part which is not an overlapping part of bus bar 5a, 5b. Moreover, since the connection part of bus bar 5a, 5b and the connection part of the electronic component module 7 and the bus bar 5b are made into a different position, connection workability | operativity is favorable. Moreover, since the connection member that connects the bus bars 5a and 5b and the connection member that connects the electronic component module 7 and the bus bar 5b are different, connection members and connection conditions suitable for each connection part can be applied. High reliability of connection.

  In addition, as a structure which makes the connection part of bus bar 5a, 5b and the connection part of the electronic component module 7 and the bus bar 5b differ, it is good also as the connection structure 10d shown in FIG.8 (b). In the connection structure 10d, the electronic component module 7 is disposed in an overlapping portion between the bus bars 5a and 5b, but a connection member that connects the bus bars 5a and 5b and a connection that connects the electronic component module 7 and the bus bar 5b. The member is a separate body. For this reason, the effect similar to the connection structure 10c can be acquired.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It will be obvious to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, it goes without saying that the configurations in the embodiments can be combined with each other. Further, the connection between the bus bars may not be substantially L-shaped but may be substantially T-shaped. Three or more bus bars may be connected at one place.

  In addition, as described above, the connection holes 17 are formed in the bus bars 5a and 5b in advance at predetermined positions. However, if the electric parts mounted on the vehicle differ depending on the grade of the vehicle, the grade is changed. The connection hole 17 used may differ for every. Therefore, the connection hole 17 may be used without being connected to anything.

  In such a case, depending on the part of the vehicle, a plurality of bus bars 5a, 5b are connected by a connection member, and a connection hole 17 for connecting the electronic component module 7 is provided in the vicinity of the connection part. An in-vehicle power trunk bus bar connection structure is applied. That is, although the connection hole 17 is formed in the vicinity of the connection portion between the bus bars 5a and 5b, there may be a state in which the electronic component module 7 is not connected.

  In this case, it is desirable that an insulating member is disposed so as to cover the connection portion between the bus bars 5a and 5b and the connection hole 17. The insulating member is, for example, an insulating tape or an insulating case, and can be easily removed as necessary. By doing in this way, while being able to ensure the insulation of the said part, when adding an electrical component, for example, by removing the insulating member of the said part and connecting the electronic component module 7 to the connection hole 17 It is easy to add electrical components.

DESCRIPTION OF SYMBOLS 1 ......... Vehicle 3 ......... Battery 5, 5a, 5b ......... Bus bar 6 ......... Insulation coating 7 ...... Electronic component module 9 ......... Electric components 10, 10a, 10b, 10c, 10d ......... Connection structure 11 ......... Wire 13 ......... Conductor plate part 13a ......... Insulation coating 14 ......... Module part 15 ......... Connecting convex part 15a ......... Male thread part 17, 17a ......... Connection hole 18 ... ... Bolt 19, 19a ......... Nut 100 ......... Vehicle 101 ......... Wire 103 ......... Battery 104 ...... Power distribution BOX
105 ……… Electric parts

Claims (17)

A connection structure between an on-vehicle power trunk bus bar and an electronic component module,
A plurality of the in-vehicle power trunk bus bars are connected to each other,
A connection structure between an in-vehicle power trunk bus bar and an electronic component module, wherein the electronic component module is connected in the vicinity of a connection portion between the in-vehicle power trunk bus bars.   2. The connection structure between an in-vehicle power trunk bus bar and an electronic component module according to claim 1, wherein the electronic component module is disposed on the same plane as a contact surface between the in-vehicle power trunk bus bars.   The connection structure between the in-vehicle power main bus bar and the electronic component module according to claim 1, wherein at least a surface opposite to the contact surface with the electronic component module is coated with insulation. . The in-vehicle power trunk bus bar has a connection hole formed in the conductor portion,
The electronic component module has a connection projection that is electrically connected to the electronic component,
The in-vehicle power according to any one of claims 1 to 3, wherein the connection convex portion is inserted and fixed in the connection hole, and the in-vehicle power trunk bus bar and the electronic component module are electrically connected. Connection structure of trunk bus bar and electronic component module.   The electronic component module includes a conductor plate portion and a module portion, the conductor plate portion extends from the module portion, and the connection convex portion is formed on the conductor plate portion. The connection structure of the vehicle-mounted power trunk bus bar and the electronic component module according to claim 4.   6. The connection structure of an in-vehicle power trunk bus bar and an electronic component module according to claim 5, wherein the connection convex portion and the module portion are formed in the same plane direction with respect to the conductor plate portion.   7. The connection structure between an in-vehicle power trunk bus bar and an electronic component module according to claim 5, wherein at least a surface opposite to a contact surface with the in-vehicle power trunk bus bar is insulated. .   6. The connection structure between an in-vehicle power trunk bus bar and an electronic component module according to claim 5, wherein at least a part of a connection portion between the conductor plate part and the in-vehicle power trunk bus bar overlaps with the module part. The connection convex portion has a male screw portion, and the in-vehicle power trunk bus bar and the electronic component module are connected and fixed by a nut screwed to the connection convex portion,
9. The connection structure between an in-vehicle power trunk bus bar and an electronic component module according to claim 4, wherein the nut is a cap nut having at least an insulating surface.   The said electronic component module is arrange | positioned in the non-overlapping part of the connection part of the said vehicle-mounted power trunk bus bar, The connection structure of a vehicle-mounted power trunk bus bar and an electronic component module in any one of Claims 1-9 characterized by the above-mentioned. .   The electronic component module is disposed in an overlapping portion of the connection portions between the in-vehicle power trunk bus bars, and a connection member for connecting the in-vehicle power trunk bus bars to each other, and a connection for connecting the electronic component module and the in-vehicle power trunk bus bar. 10. The connection structure between an in-vehicle power trunk bus bar and an electronic component module according to claim 1, wherein the member is a separate body.   The electronic component module is disposed in an overlapping portion of connection portions between the in-vehicle power trunk bus bars, the connection convex portion passes through the plurality of in-vehicle power trunk bus bars, and the in-vehicle power trunk bus bars are connected to each other. A connection structure between an in-vehicle power trunk bus bar and an electronic component module according to any one of claims 4 to 9.   The electronic component module is disposed in an overlapping portion of the connection portions between the in-vehicle power trunk bus bars, and a plurality of the in-vehicle power trunk bus bars and a connection member that penetrates the electronic component module, the in-vehicle power trunk bus bars and the electronic 4. The connection structure between an in-vehicle power trunk bus bar and an electronic component module according to claim 1, wherein the component module is connected to the electronic component module.   14. The vehicle-mounted device according to claim 1, wherein the electronic component module is disposed on a side where a crossing angle between the vehicle-mounted power trunk bus bars is small in a connection portion between the vehicle-mounted power trunk bus bars. Connection structure between the main power bus bar and the electronic component module.   15. The connection structure between an in-vehicle power trunk bus bar and an electronic component module according to any one of claims 1 to 14, wherein the electronic component module is a semiconductor fuse. A connection structure of an in-vehicle power trunk bus bar used for a connection structure between the in-vehicle power trunk bus bar and the electronic component module according to any one of claims 1 to 15,
A plurality of the in-vehicle power trunk bus bars are connected to each other,
A connection structure for an in-vehicle power trunk bus bar, comprising a connection hole for connecting the electronic component module in the vicinity of a connection portion between the in-vehicle power trunk bus bars.   The connection structure of the in-vehicle power trunk bus bar according to claim 16, wherein an insulating member is disposed so as to cover a connection portion between the in-vehicle power trunk bus bars and the connection hole.

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