WO2019131222A1 - 電気接続装置 - Google Patents

電気接続装置 Download PDF

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Publication number
WO2019131222A1
WO2019131222A1 PCT/JP2018/046118 JP2018046118W WO2019131222A1 WO 2019131222 A1 WO2019131222 A1 WO 2019131222A1 JP 2018046118 W JP2018046118 W JP 2018046118W WO 2019131222 A1 WO2019131222 A1 WO 2019131222A1
Authority
WO
WIPO (PCT)
Prior art keywords
bus bar
terminal
conductive plate
switching element
electrical connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/046118
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
原口　章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Wiring Systems Ltd, AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd filed Critical Sumitomo Wiring Systems Ltd
Priority to CN201880079643.6A priority Critical patent/CN111566884B/zh
Priority to US16/957,265 priority patent/US11102887B2/en
Priority to DE112018006649.5T priority patent/DE112018006649T5/de
Publication of WO2019131222A1 publication Critical patent/WO2019131222A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0238—Electrical distribution centers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/0313—Organic insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in printed circuit boards [PCB], e.g. insert-mounted components [IMC]
    • H05K1/185—Printed circuits structurally associated with non-printed electric components associated with components mounted in printed circuit boards [PCB], e.g. insert-mounted components [IMC] associated with components encapsulated in the insulating substrate of the PCBs; associated with components incorporated in internal layers of multilayer circuit boards
    • H05K1/186—Printed circuits structurally associated with non-printed electric components associated with components mounted in printed circuit boards [PCB], e.g. insert-mounted components [IMC] associated with components encapsulated in the insulating substrate of the PCBs; associated with components incorporated in internal layers of multilayer circuit boards manufactured by mounting on or connecting to patterned circuits before or during embedding
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/303—Assembling printed circuits with electric components, e.g. with resistors with surface mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/06—Arrangements of circuit components or wiring on supporting structure on insulating boards, e.g. wiring harnesses
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14322—Housings specially adapted for power drive units or power converters wherein the control and power circuits of a power converter are arranged within the same casing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10166—Transistor

Definitions

  • the present invention relates to electrical connection devices.
  • This application claims priority based on Japanese Patent Application No. 2017-254840 filed on Dec. 28, 2017, and incorporates all the contents described in the aforementioned Japanese application.
  • An electric connection box connected to a power source and a load such as a head lamp or a wiper is mounted on the vehicle.
  • the electrical connection box provides electrical connection between the power supply and the load and cuts off the connection (see Patent Document 1).
  • source and drain terminals of an FET are connected to two bus bars (conductive plates).
  • the source terminal of the FET is connected to the power supply (or load) through one of the two bus bars, and the drain terminal of the FET is connected to the load (or power supply) through the other of the two bus bars.
  • a circuit board on which a control element is mounted is mounted on the two bus bars.
  • the control element switches on and off of the FET by outputting a control signal.
  • the two bus bars are electrically connected to each other, allowing current to flow through the FET and power from the power supply to the load.
  • the FET is switched off, the two bus bars are electrically disconnected from each other to interrupt the current flowing to the FET and the power supply from the power supply to the load is stopped.
  • the electronic component described in Patent Document 2 includes a main body of the electronic component and three terminals provided on the main body.
  • the three terminals are connected to the three bus bars.
  • the main body has a plurality of outer surfaces, and among the three terminals, the first terminal and the second terminal are provided on different outer surfaces.
  • the third terminal is provided on the outer surface where the first terminal is provided so as to be adjacent to the first terminal.
  • the electronic component described in Patent Document 2 is an FET
  • the first to third terminals are a source terminal, a drain terminal, and a gate terminal.
  • the gate terminal is connected to the control element of the circuit board via the bus bar.
  • the electric connection device includes a first conductive plate provided with a notch in its peripheral portion, a second conductive plate adjacent to the first conductive plate without contact, and the first conductive plate.
  • An electrical connection device comprising: a first terminal connected; a second terminal connected to the second conductive plate; and a control terminal, and a switching element which is switched on or off in accordance with a voltage of the control terminal.
  • FIG. 1 is a perspective view of an electrical connection box provided with the electrical connection device according to the embodiment.
  • FIG. 2 is a cross-sectional view of the electrical connection box.
  • FIG. 3 is an exploded perspective view of the electrical connection box.
  • FIG. 4 is a perspective view of a first bus bar, a second bus bar, a third bus bar, an insulator, a conductive path, and a bolt.
  • FIG. 5 is a perspective view of the second bus bar alone.
  • FIG. 6 is a perspective view of the second bus bar provided with an insulator.
  • FIG. 7 is a perspective view of the insulator provided with a conductive path.
  • FIG. 8 is another perspective view of the insulator provided with a conductive path.
  • FIG. 9 is a perspective view of the substrate.
  • FIG. 1 is a perspective view of an electrical connection box provided with the electrical connection device according to the embodiment.
  • FIG. 2 is a cross-sectional view of the electrical connection box.
  • FIG. 3 is
  • FIG. 10 is another perspective view of the substrate.
  • FIG. 11 is a perspective view for explaining the attachment of the switching element to the base.
  • FIG. 12 is a perspective view for explaining attachment of the connection member to the base.
  • FIG. 13 is a perspective view for explaining the attachment of the circuit board to the base.
  • FIG. 14 is a perspective view for explaining the attachment of the heat dissipation member to the base.
  • the FET has been miniaturized.
  • the size of the electrical connection box can be reduced.
  • the separation distance between the source terminal and the gate terminal is shortened.
  • the electrical connection device includes a first conductive plate provided with a notch at its peripheral edge, a second conductive plate adjacent to the first conductive plate without contact, and the first conductive plate. It has a first terminal connected to the conductive plate, a second terminal connected to the second conductive plate, and a control terminal, and a switching element which is switched on or off according to the voltage of the control terminal.
  • An electrical connection device comprising: an insulator embedded in the notch; and a conductive path provided on the surface of the insulator in non-contact with the first conductive plate and connected to the control terminal. Equipped with
  • a notch is provided in the peripheral portion of the first conductive plate, and an insulator is embedded in the notch of the first conductive plate.
  • a conductive path is provided on the surface of the insulator.
  • the first terminal of the switching element is connected to the first conductive plate.
  • the second terminal of the switching element is connected to the second conductive plate.
  • the control terminal of the switching element is connected to the conductive path.
  • the first conductive plate and the conductive path provided on the surface of the insulator. Therefore, even if the separation distance between the first terminal of the switching element and the control terminal is short, the first conductive plate and the conductive path can be insulated. Therefore, a small switching element in which terminals are disposed close to each other can be used as the switching element constituting the electrical connection device. As a result, the size of the electrical connection device can be reduced.
  • the insulator includes metal particles.
  • an insulator containing metal particles is embedded in the notch of the first conductive plate.
  • metal particles can be made conductive by irradiation of laser light to an insulator containing metal particles, and plating can be performed to provide a conductive path on the surface of the insulator.
  • a metal nanoparticle paste can be printed and sintered on the surface of a general insulator to provide a conductive path.
  • the first conductive plate and the second conductive plate are integrated by a synthetic resin having an insulating property, and the first conductive plate and the second conductive plate are integrated. It is preferable that the synthetic resin between the plates and the switching element face each other at an interval.
  • an air gap is formed between the switching element and the synthetic resin that integrates the first conductive plate and the second conductive plate between the first conductive plate and the second conductive plate. Therefore, for example, when the switching element generates heat, the synthetic resin can be thermally expanded toward the air gap. That is, the void functions as a relief for the synthetic resin.
  • the third conductive plate adjacent to the first conductive plate without contact, the third terminal connected to the first conductive plate, and the third conductive plate A second switching element having a fourth terminal connected to the second terminal and a second control terminal connected to the conductive path, the second switching element switching on or off according to the voltage of the second control terminal; Furthermore, the structure provided is preferable.
  • the third terminal of the second switching element is connected to the first conductive plate.
  • the fourth terminal of the second switching element is connected to the second conductive plate.
  • the second control terminal of the second switching element is connected to the conductive path.
  • FIG. 1 is a perspective view of an electrical connection box provided with the electrical connection device according to the embodiment.
  • FIG. 2 is a cross-sectional view of the electrical connection box.
  • FIG. 3 is an exploded perspective view of the electrical connection box.
  • reference numeral 1 denotes an electric connection box
  • the electric connection box 1 includes an electric connection device 2, a circuit board 31, a heat dissipation member 32, and a cover 4.
  • the electrical connection device 2 includes a first bus bar 21 (second conductive plate), a second bus bar 22 (first conductive plate), a third bus bar 23 (third conductive plate), an insulator 24, and eight conductive paths 25 (see FIG. 4) and two bolts 261 and 262.
  • FIG. 4 is a perspective view of each of the first bus bar 21, the second bus bar 22, the third bus bar 23, the insulator 24, the conductive path 25, and the bolts 261 and 262.
  • the first bus bar 21 has a rectangular plate shape.
  • a through hole 211 is provided at one long side of the first bus bar 21.
  • the through hole 211 is disposed at the center of the first bus bar 21 in the longitudinal direction.
  • the first bus bar 21 has conductivity, and is made of metal, for example.
  • the shaft portion of the bolt 261 is crimped in the through hole 211 of the first bus bar 21.
  • the shaft portion of the bolt 261 protrudes from one surface of the first bus bar 21 in a direction orthogonal to one surface of the first bus bar 21.
  • the head of the bolt 261 is in contact with the other surface of the first bus bar 21.
  • the configuration of the third bus bar 23 is similar to the configuration of the first bus bar 21.
  • the shaft portion of the bolt 262 is crimped to the through hole 231 of the third bus bar 23.
  • FIG. 5 is a perspective view of the second bus bar 22 alone.
  • the second bus bar 22 has a rectangular plate shape.
  • Three notches 221 are provided in parallel in each long side of the second bus bar 22.
  • the three notches 221 in one long side of the second bus bar 22 and the three notches 221 in the other long side of the second bus bar 22 are arranged in a zigzag.
  • Each notch 221 has a rectangular shape.
  • the downward surface and the upward surface of the second bus bar 22 shown in FIG. 5 will be hereinafter referred to as the lower surface 22 a and the upper surface 22 b of the second bus bar 22.
  • the thickness of each of the first bus bar 21, the second bus bar 22, and the third bus bar 23 is substantially the same.
  • An insulator 24 is provided integrally with the second bus bar 22.
  • FIG. 6 is a perspective view of the second bus bar 22 with the insulator 24 provided.
  • the insulator 24 is one in which a large number of metal particles are dispersed in an insulating synthetic resin.
  • the insulator 24 integrally includes an insulating layer 241, six terminal receptacles 242, two terminal receptacles 243, and two projecting pieces 244.
  • the insulating layer 241 is stacked on the lower surface 22 a of the second bus bar 22 and covers the six notches 221 of the second bus bar 22.
  • the terminal receiver 242 is embedded in the notch 221 of the second bus bar 22.
  • Each terminal receptacle 242 is continuous with the portion covering the notch 221 of the insulating layer 241.
  • the terminal receiver 242 has a flush surface on the top surface 22 b (the surface on which the insulating layer 241 is not stacked) of the second bus bar 22.
  • the two terminal receptacles 243 are disposed at both ends of the second bus bar 22 in the longitudinal direction. Each terminal receptacle 243 is continuous with the insulating layer 241.
  • the terminal receiver 243 has a surface flush with the top surface 22 b of the second bus bar 22.
  • the two projecting pieces 244 project in opposite directions from the two terminal receptacles 243.
  • the protruding direction of the protruding piece 244 is the longitudinal direction of the second bus bar 22.
  • the second bus bar 22 integrally provided with the insulator 24 can be easily formed by insert molding in which a synthetic resin including metal particles is injected into a mold in which the second bus bar 22 is inserted.
  • FIG. 7 is a perspective view of the insulator 24 in which the conductive path 25 is provided.
  • FIG. 8 is another perspective view of the insulator 24 in which the conductive path 25 is provided.
  • FIG. 7 (and FIG. 8) is a view of a stacked body in which the second bus bar 22 and the insulating layer 241 are stacked, as viewed from the second bus bar 22 side (the insulating layer 241 side).
  • Each conductive path 25 is provided on the surface of the insulator 24.
  • the conductive path 25 has a connection portion 251, a through hole 252, and a wiring portion 253.
  • One connection portion 251 is provided for each of the six terminal receptacles 242 and the two terminal receptacles 243 of the insulator 24 (a total of eight).
  • connection portion 251 provided on the terminal receiver 242 is provided on the same surface as the upper surface 22 b of the second bus bar 22 of the terminal receiver 242.
  • the connection portion 251 is disposed close to the periphery of the notch 221 of the second bus bar 22, but the connection portion 251 and the second bus bar 22 are insulated by the insulator 24.
  • the connection portion 251 provided on the terminal receiver 243 is provided on the same surface as the upper surface 22 b of the second bus bar 22 of the terminal receiver 243.
  • the connection portion 251 is disposed close to the short side of the second bus bar 22, but the connection portion 251 and the second bus bar 22 are insulated by the insulator 24.
  • connection portion 251 of the conductive path 25 and the through hole 252 are electrically connected via the wiring portion 253.
  • the wiring portion 253 is continuous with the connection portion 251 provided in the terminal receiver 242, and is continuous with the through hole 252 through the terminal receiver 242, the insulating layer 241, the terminal receiver 243, and the projecting piece 244.
  • the wiring portion 253 is continuous with the connection portion 251 provided in the terminal receiver 243, and is continuous with the through hole 252 through the terminal receiver 243 and the protruding piece 244.
  • the conductive path 25 is provided as shown in FIG. 7 and FIG. 8 by, for example, irradiating the insulator 24 shown in FIG. 6 with laser light and further plating it.
  • the conductive path 25 provided by laser light irradiation and plating can be easily miniaturized.
  • the insulator 24 provided with the conductive path 25 functions as a printed wiring board integrated with the second bus bar 22.
  • the insulating portion 27 is made of synthetic resin.
  • FIG. 9 is a perspective view of the base 20.
  • FIG. FIG. 10 is another perspective view of the base 20.
  • the longitudinal direction of the first bus bar 21 is the longitudinal direction
  • the short direction of the first bus bar 21 is the lateral direction
  • the direction orthogonal to the first bus bar 21 is the longitudinal direction.
  • the side from which the shaft portion of the bolt 261 of the first bus bar 21 protrudes is the upper side.
  • the through holes 211 are provided on the left side of the first bus bar 21.
  • the first bus bar 21, the second bus bar 22, and the third bus bar 23 are juxtaposed in this order from left to right such that their longitudinal directions are parallel.
  • the upper surface 22 b of the second bus bar 22 faces upward.
  • the lower surface and the end surface of the first bus bar 21 and the head of the bolt 261 are covered with the insulating portion 27.
  • the upper surface of the first bus bar 21 and the shaft portion of the bolt 261 are not covered by the insulating portion 27.
  • the left end face of the second bus bar 22 is opposed to the right end face of the first bus bar 21.
  • An insulating portion 27 is provided between the right end surface of the first bus bar 21 and the left end surface of the second bus bar 22.
  • the upper surface (and the lower surface) of the first bus bar 21 and one surface (and the other surface) of the second bus bar 22 are virtually in the same plane.
  • the second bus bar 22, the insulator 24, and the conductive path 25 expose at least the upper surface 22 b of the second bus bar 22, the protruding pieces 244 of the insulator 24, and the connection portion 251 of each conductive path 25. , Is covered by the insulating portion 27.
  • the third bus bar 23 is disposed such that the surface on which the shaft portion of the bolt 262 protrudes is upward, and the long side portion where the through hole 231 is provided is rightward.
  • the right end face of the second bus bar 22 is opposed to the left end face of the third bus bar 23.
  • An insulating portion 27 is provided between the left end surface of the third bus bar 23 and the right end surface of the second bus bar 22.
  • the upper surface (and the lower surface) of the third bus bar 23 and one surface (and the other surface) of the second bus bar 22 are virtually in the same plane.
  • the lower surface and the end surface of the third bus bar 23 and the head of the bolt 262 are covered with the insulating portion 27.
  • the upper surface of the third bus bar 23 and the shaft portion of the bolt 262 are not covered by the insulating portion 27.
  • connection portions 251 of the eight conductive paths 25 are arranged along the right side of the first bus bar 21, and the remaining four are arranged along the left side of the third bus bar 23.
  • the left connection portion 251 is along the front side of the second bus bar 22 or along the rear side of the notch 221 on the left side of the second bus bar 22 (see FIG. 7).
  • the connection part 251 on the right side is along the rear side of the second bus bar 22 or the front side of the notch 221 on the right side of the second bus bar 22 (see FIG. 7).
  • the upper surface 271 of the insulating portion 27 is flush with the upper surfaces of the first bus bar 21, the second bus bar 22, the third bus bar 23, and the terminal receptacles 242 of the insulator 24 (see FIG. 2).
  • Four bosses 272 are provided on the upper surface 271 so as to protrude upward.
  • the four bosses 272 are adjacent to the four corners of the second bus bar 22.
  • An internal thread is provided on the inner surface of each boss 272.
  • a plurality of screw holes 273 are provided in the insulating portion 27 so as to penetrate the insulating portion 27 in the vertical direction.
  • the insulating portion 27 is provided with two openings 274.
  • the two openings 274 are located below the first bus bar 21 and the third bus bar 23 (see FIG. 2). Through the two openings 274, a wide range of the lower surface of each of the first bus bar 21 and the third bus bar 23 is exposed.
  • Eight recesses 275 are provided on the upper surface 271 of the insulating portion 27. Of the eight recesses 275, four are disposed between the first bus bar 21 and the second bus bar 22, and the remaining four are disposed between the second bus bar 22 and the third bus bar 23. .
  • the electrical connection box 1 further includes eight switching elements 5 (see FIG. 3).
  • FIG. 11 is a perspective view for explaining the attachment of the switching element 5 to the base 20.
  • Each switching element 5 is an FET, and includes an element body 50, a source terminal 51, a drain terminal 52, and a gate terminal 53.
  • the switching element 5 is switched on or off according to the voltage of the gate terminal 53.
  • the eight switching elements 5 are attached to the base 20 such that the element bodies 50 are arranged four by four in the front-rear direction and two each in the left-right direction.
  • the source terminal 51, the drain terminal 52, and the gate terminal 53 of each switching element 5 on the left side are a second terminal, a first terminal, and a control terminal.
  • Each switching element 5 on the right side is a second switching element.
  • the source terminal 51, the drain terminal 52, and the gate terminal 53 of each switching element 5 of each switching element 5 on the right side are a fourth terminal, a third terminal, and a second control terminal.
  • the element main body 50 has a flat rectangular parallelepiped shape.
  • the element main body 50 is disposed on the base 20 such that the two surfaces having the largest area among the six surfaces of the element main body 50 are vertically oriented and the long sides of this surface are longitudinally directed.
  • the two largest surfaces of the element main body 50 will be referred to as the upper surface 501 and the lower surface 502.
  • two surfaces continuous to the long side of the upper surface 501 are called side surfaces 503 and 504, and two surfaces continuous to the short side of the upper surface 501 are called side surfaces 505 and 506.
  • the source terminal 51 is provided on the side surface 503 of the element main body 50.
  • the source terminal 51 has a plurality of protrusions projecting from the side surface 503 in the direction orthogonal to the side surface 503.
  • the lower surface of the source terminal 51 and the lower surface 502 of the element body 50 are virtually in the same plane.
  • the gate terminal 53 is provided on the side surface 503 of the element main body 50.
  • the gate terminal 53 protrudes from the side surface 503 in the direction orthogonal to the side surface 503.
  • the lower surface of the gate terminal 53 and the lower surface 502 of the element main body 50 are virtually in the same plane.
  • the source terminal 51 and the gate terminal 53 are adjacent to each other in the front-rear direction.
  • the source terminal 51 is located closer to the side surface 505 of the side surface 503.
  • the gate terminal 53 is located closer to the side surface 506 of the side surface 503.
  • the drain terminal 52 is provided on the lower surface 502 and the side surface 504 of the element main body 50.
  • the drain terminal 52 has a foil portion covering the lower surface 502, and an extension portion which is continuous with the foil portion and extends from the side surface 504 in a direction orthogonal to the side surface 504. Since the foil portion of the drain terminal 52 is sufficiently thin, the thickness of the foil portion can be ignored.
  • the switching element 5 connected to the first bus bar 21 is configured such that the side surface 503 provided with the source terminal 51 and the gate terminal 53 faces the right, and the side surface 505 near the source terminal 51 faces the back. 21, the second bus bar 22 and the conductive path 25 are connected.
  • the source terminal 51 is connected to a portion of the top surface 22 b of the second bus bar 22 on the rear side of the insulator 24 by the solder 541.
  • the drain terminal 52 is connected to the upper surface of the first bus bar 21 by the solder 542.
  • the gate terminal 53 is connected to the connection portion 251 of the conductive path 25 by the solder 543.
  • the element body 50 of the switching element 5 connected to the first bus bar 21 partially covers the space between the first bus bar 21 and the second bus bar 22.
  • a recess 275 disposed between the first bus bar 21 and the second bus bar 22 of the insulating portion 27 is located below the element main body 50. That is, the insulating portion 27 between the first bus bar 21 and the second bus bar 22 is not in contact with the switching element 5.
  • the switching element 5 connected to the third bus bar 23 is configured such that the side surface 503 provided with the source terminal 51 and the gate terminal 53 faces left and the side surface 505 near the source terminal 51 faces front, 22, the third bus bar 23 and the conductive path 25.
  • the source terminal 51 is connected to the front portion of the insulator 24 on the top surface 22 b of the second bus bar 22 by the solder 541.
  • the drain terminal 52 is connected to the top surface of the third bus bar 23 by the solder 542.
  • the gate terminal 53 is connected to the connection portion 251 of the conductive path 25 by the solder 543.
  • the element body 50 of the switching element 5 connected to the third bus bar 23 partially covers the space between the third bus bar 23 and the second bus bar 22.
  • the recess 275 disposed between the third bus bar 23 and the second bus bar 22 of the insulating portion 27 is located below the element main body 50. That is, the insulating portion 27 between the third bus bar 23 and the second bus bar 22 is not in contact with the switching element 5.
  • the electrical connection device 2 further comprises two connection members 28.
  • FIG. 12 is a perspective view for explaining the attachment of the connection member 28 to the base 20.
  • the connection member 28 has four connection pins 281 and a holder 282.
  • the four connection pins 281 are arranged in parallel to one another.
  • the holder 282 holds the four connection pins 281 such that both ends of each connection pin 281 project from the holder 282.
  • One end of the connection pin 281 of one (and the other) connection member 28 is provided on the projecting piece 244 on the front side (and rear side) of the insulator 24 so that the other end of the connection pin 281 faces upward.
  • the through hole 252 of the conductive path 25 is fitted.
  • FIG. 13 is a perspective view for explaining attachment of the circuit board 31 to the base 20.
  • the circuit board 31 has a rectangular shape.
  • a conductive path made of metal foil is provided on one surface of the circuit board 31.
  • a control element 311, a drive circuit 312, and a connector 313 are mounted on one surface of the circuit board 31.
  • the illustration of the connector 313 in FIG. 2 is omitted.
  • four through holes 314 are provided in parallel in the short direction of the circuit board 31 at each short side portion of the circuit board 31. At four corners of the circuit board 31, four insertion holes 315 are provided.
  • the control element 311 is, for example, a microprocessor.
  • the control element 311 is electrically connected to the drive circuit 312 and the connector 313 through the conductive path of the circuit board 31.
  • the drive circuit 312 and each through hole 314 are electrically connected through the conductive path of the circuit board 31.
  • the circuit board 31 is attached to the base 20 such that the control element 311 and the connector 313 face upward and the conductive paths 25 and the control element 311 are electrically connected. Specifically, the connection pin 281 of the connection member 28 on the front side is inserted into the through hole 314 on one short side of the circuit board 31. Further, the connection pin 281 of the connection member 28 on the rear side is fitted into the through hole 314 of the other short side portion of the circuit board 31. Further, the circuit board 31 is screwed to the base 20 by inserting the screws 316 into the insertion holes 315 and screwing them to the bosses 272. The circuit board 31 and the second bus bar 22 face each other at an interval. The circuit board 31 and the second bus bar 22 are parallel to each other.
  • FIG. 14 is a perspective view for explaining attachment of the heat dissipation member 32 to the base 20.
  • the heat dissipation member 32 has a plate shape.
  • the heat dissipation member 32 is provided with a plurality of through holes 321.
  • the through holes 321 correspond to the screw holes 273 of the base 20.
  • Two heat conducting parts 322 are provided on one surface 32 a of the heat dissipation member 32 so as to correspond to the two openings 274 of the base 20 (see FIG. 10).
  • Each heat conducting portion 322 has insulating properties and high heat conductivity, and is, for example, heat conducting grease applied to one surface of the heat dissipation member 32.
  • the heat dissipating member 32 is attached to the base 20 such that the heat conducting portion 322 faces upward and the first bus bar 21 and the third bus bar 23 are attached to the heat dissipating member 32 through the heat conducting portion 322.
  • the two heat conducting parts 322 fill the two openings 274 of the base 20 and make contact with the first bus bar 21 and the third bus bar 23 (see FIG. 2).
  • the heat radiating member 32 is screwed to the base 20 by the screws 323 penetrating through the through holes 321 and screwing with the screw holes 273.
  • the cover 4 is in the form of a box whose one side is open.
  • the cover 4 has an insulating property and is made of, for example, a synthetic resin.
  • the cover 4 has a bottom wall 4a and four side walls 4b to 4e.
  • the bottom wall 4a has a rectangular shape.
  • the side walls 4b to 4e rise in the same direction from the four sides of the bottom wall 4a.
  • the side walls 4b and 4c are parallel to one another, and the side walls 4d and 4e are parallel to one another.
  • An opening 41 is provided at the center of the bottom wall 4a.
  • An opening 42 is provided at the center of one side along the side wall 4b of the bottom wall 4a. The opening 42 extends to the bottom wall 4a and the side wall 4b.
  • An opening 43 is provided at the center of one side along the side wall 4c of the bottom wall 4a. The opening 43 extends to the bottom wall 4a and the side wall 4c.
  • the cover 4 has two partition plates 44, 45. The partition plates 44 and 45 respectively partition the inside of the cover 4.
  • the partition plates 44, 45 each have a semi-cylindrical shape, and the axial length direction of each of the partition plates 44, 45 is orthogonal to the bottom wall 4a.
  • the partition plate 44 rises from the periphery of the opening 42 in the bottom wall 4a, and the peripheral wall of the partition plate 44 is continuous with the periphery of the opening 42 in the side wall 4b.
  • the partition plate 45 has substantially the same structure as the partition plate 44, and is provided on the periphery of the opening 43.
  • the cover 4 is attached to the base 20 such that the bottom wall 4a of the cover 4 and the circuit board 31 are parallel to each other and the side wall 4b is directed to the left.
  • the connector 313 of the circuit board 31 is fitted into the opening 41 of the cover 4. Then, through the openings 42 and 43, the shaft portions of the bolts 261 and 262, the peripheral edge of the through hole 211 of the first bus bar 21 and the peripheral edge of the through hole 231 of the third bus bar 23 are exposed.
  • the cover 4 attached to the base 20 covers the eight switching elements 5 and the circuit board 31.
  • the electric connection box 1 shown in FIGS. 1 to 3 is mounted, for example, on a vehicle (not shown).
  • a cable connected to a power supply is connected to the first bus bar 21 using a bolt 261.
  • a cable connected to a load is connected to the third bus bar 23 using a bolt 262.
  • a signal line connected to an ECU (Electronic Control Unit) (not shown) is connected to the connector 313.
  • the control element 311 of the circuit board 31 communicates with the ECU via the connector 313.
  • the control element 311 also outputs a control signal for switching the switching element 5 on and off to the drive circuit 312.
  • the drive circuit 312 applies a voltage for switching on and off of the switching element 5 to the gate terminal 53 of the switching element 5 in accordance with the control signal input from the control element 311.
  • first bus bar 21, second bus bar 22, and third bus bar 23 are electrically connected to each other.
  • current is applied to the cable connected to the power supply, the first bus bar 21, the four switching elements 5 on the left side, the second bus bar 22, the four switching elements 5 on the right side, the third bus bar 23, and the cable connected to the load. Flows from the power supply to the load.
  • switching element 5 When switching element 5 is switched off, source terminal 51 and drain terminal 52 of each switching element 5 are electrically disconnected, so that first bus bar 21, second bus bar 22, and third bus bar 23 are mutually connected. It is cut off electrically. At this time, the current flows to the cable connected to the power supply, the first bus bar 21, the four switching elements 5 on the left side, the second bus bar 22, the four switching elements 5 on the right side, the third bus bar 23, and a cable connected to the load. The current is cut off and the power supply to the load is stopped.
  • the switching element 5 When a current flows in the switching element 5, the switching element 5 generates heat.
  • the heat generated by the switching element 5 is conducted to the first bus bar 21 or the third bus bar 23, the heat conducting portion 322, and the heat dissipation member 32 in this order, and is released to the outside of the electrical connection box 1.
  • the electrical connection device 2 since the conductive path 25 can be easily miniaturized, even when the separation distance between the source terminal 51 and the gate terminal 53 of the switching element 5 is short, The conductive path 25 can be sufficiently separated. Therefore, a small switching element in which the source terminal 51 and the gate terminal 53 are disposed close to each other can be used as the switching element 5. As a result, the electrical connection device 2 can be miniaturized.
  • the base 20 formed by integrating the first bus bar 21, the second bus bar 22, the third bus bar 23 and the like is easy to handle when assembling the electrical connection box 1.
  • the base 20 can be easily formed by insert molding in which a synthetic resin is injected into a mold into which the first bus bar 21, the second bus bar 22, the third bus bar 23, and the like are inserted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Connection Or Junction Boxes (AREA)
  • Structure Of Printed Boards (AREA)
PCT/JP2018/046118 2017-12-28 2018-12-14 電気接続装置 Ceased WO2019131222A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201880079643.6A CN111566884B (zh) 2017-12-28 2018-12-14 电连接装置
US16/957,265 US11102887B2 (en) 2017-12-28 2018-12-14 Electrical connection device
DE112018006649.5T DE112018006649T5 (de) 2017-12-28 2018-12-14 Elektrische Verbindungsvorrichtung

Applications Claiming Priority (2)

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JP2017254840A JP6939542B2 (ja) 2017-12-28 2017-12-28 電気接続装置
JP2017-254840 2017-12-28

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WO2019131222A1 true WO2019131222A1 (ja) 2019-07-04

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JP (1) JP6939542B2 (https=)
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WO (1) WO2019131222A1 (https=)

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WO2023026389A1 (ja) * 2021-08-25 2023-03-02 株式会社オートネットワーク技術研究所 車載用の半導体スイッチ装置

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JP2023066456A (ja) * 2021-10-29 2023-05-16 住友電装株式会社 回路構成体
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JP2019119325A (ja) 2019-07-22
US20200404790A1 (en) 2020-12-24
JP6939542B2 (ja) 2021-09-22
CN111566884B (zh) 2021-11-05
DE112018006649T5 (de) 2020-10-08
CN111566884A (zh) 2020-08-21
US11102887B2 (en) 2021-08-24

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