CN111525476A - Electrical junction box - Google Patents
Electrical junction box Download PDFInfo
- Publication number
- CN111525476A CN111525476A CN202010327259.2A CN202010327259A CN111525476A CN 111525476 A CN111525476 A CN 111525476A CN 202010327259 A CN202010327259 A CN 202010327259A CN 111525476 A CN111525476 A CN 111525476A
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- Prior art keywords
- opening
- hole
- conductive
- terminal
- bus bar
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- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 230000001070 adhesive effect Effects 0.000 claims abstract description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910000679 solder Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000011889 copper foil Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011231 conductive filler Substances 0.000 claims description 3
- 239000013039 cover film Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- H02G3/081—Bases, casings or covers
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- 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
- H02G3/03—Cooling
-
- 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
Abstract
The invention discloses an electric junction box, which structurally comprises the electric junction box, and further comprises a shell, a main body, a cover, a connector, a terminal, an input bus, an input terminal, a through hole, an output bus, an output terminal, a through hole, a circuit board, an adhesive sheet, a first hole, a second hole, a through hole, a connecting part, a first conducting part, a second conducting part, a grounding wire, a control board, a first opening, a second opening, a third opening, a drain terminal, a grid terminal, a source terminal, a first conductive strip, a fourth opening, a second conductive strip and a fifth opening shell, wherein the shell has a cuboid shape and comprises a rectangular flat-plate-shaped main body and the cover which covers one surface of the main body on the whole surface.
Description
Technical Field
The invention relates to an electrical junction box, belonging to the electrical field.
Background
Background artconventionally, an electrical junction box that controls supply of electric power from a power source to a load is mounted between the power source and the load in a vehicle.
An electrical junction box and a power supply apparatus having the same of prior art application No. 201010287846.X structurally include a box main body having a connector engagement portion and an upper case attached to a lower case in an overlapping relationship; and a bus bar accommodated in the cartridge main body. The lower case includes a bottom wall portion, a positioning wall, and a peripheral wall.
The electrical junction box of prior art application No. 201110248461.7, which includes a structure comprising an electrical component; a first block on which an electric component is mounted; and a second block mounted with the electric components. The first block includes a tubular-shaped first member that protrudes toward the second block. The second block comprises a second member arranged to be slidably inserted into the first member.
It is found that it is difficult to provide an appropriate gap for each bus bar as the size of the FET is reduced and the distance between terminals is reduced compared with the prior art 1, 2, and therefore, it is difficult to mount a Field Effect Transistor (FET) on the bus bar, and a space occupied by a conductive wire in a box is large, it is difficult to find out time and power consumption for a fault at the time of maintenance, and it is difficult to discharge heat in time because the temperature in the box is high under a certain work load.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an electric junction box to solve the existing problems.
In order to achieve the purpose, the invention is realized by the following technical scheme: an electrical junction box comprising a housing, a main body, a cover, a connector, a terminal, an input bus bar, an input terminal, a through hole, an output bus bar, an output terminal, a through hole, a circuit board, an adhesive sheet, a first hole, a second hole, a through hole, a connecting portion, a first conductive portion, a second conductive portion, a ground wire, a control board, a first opening, a second opening, a third opening, a drain terminal, a gate terminal, a source terminal, a first conductive strip, a fourth opening, a second conductive strip, a fifth open housing, the housing having a rectangular parallelepiped shape and comprising a rectangular flat plate-shaped main body and a cover covering one surface of the main body over the entire surface, a rod-like connector being provided upright on one short side of the circuit board, the circuit board being connected to the control board via the connector, the second connector having a cylindrical shape, and a plurality of rod-shaped terminals are provided inside the second connector, the electrical junction box includes a plurality of FETs, a plurality of first conductive strips and a plurality of second conductive strips which are provided so as to correspond to the FETs, respectively, and are located inside the FETs, a plate-shaped input bus bar and an output bus bar are provided on one surface of the main body, the circuit board is bonded to the main body by a rectangular heat-conductive and insulating adhesive sheet, the circuit board has a first opening, a second opening and a third opening therethrough at positions corresponding to the respective FETs, the second opening and the third opening are located inside the first opening, the first conductive portion, the second conductive portion are provided with a first hole and a second hole at positions corresponding to a fourth opening and a fifth opening of the circuit board in the adhesive sheet, an opening of the first hole corresponds to an outer half of an opening of the first opening, the bore of the second hole corresponds to the bore inner half of the fifth opening.
In order to optimize the technical scheme, the method further comprises the following steps:
according to a preferred mode, the control board is in the shape of a rectangular board and is arranged such that one surface faces the circuit board and the longitudinal direction thereof is along the longitudinal direction of the circuit board, and the control board includes a circuit of electronic parts such as a resistor, a coil, a capacitor, and a diode, and a wiring pattern for electrically connecting these electronic parts.
According to a preferred mode, the input bus bar is L-shaped in a plan view, and L-shaped linear portions are provided along long and short sides of the main body, respectively, an input terminal is continuously provided at one end of the input bus bar and protrudes from the main body, the output bus bar is rectangular-shaped and is arranged at a center of one surface of the main body, the output bus bar is equal to the input bus bar at a predetermined distance in a length direction thereof along a length direction of the main body, in the output bus bar, an output terminal is continuously provided at a center of the long side of the input bus bar, the output terminal protrudes from the main body, the input bus bar and the output bus bar, the input terminal and the output terminal each being a nickel member having a thickness of mm and being surface-plated, the input terminal and the output terminal being provided with a first through hole, a second through hole penetrating in the thickness direction, respectively, and being connected to a power source and a load by a bolt inserted, the input terminal is connected to a power source and the output terminal is connected to a load.
According to a preferred mode, the body is manufactured by insert molding using an insulating resin material such as a phenol resin or a glass epoxy resin.
According to a preferable mode, the first opening area is larger than the second opening and the third opening, and the second opening area is larger than the third opening, in the circuit board, the fourth opening is provided at a position corresponding to each first conductive strip, and the fifth opening is provided at a position corresponding to each second conductive strip.
According to a preferred mode, on one surface of the circuit board, a rectangular first conductive portion is provided at a position corresponding to the first opening and the fourth opening, the first conductive portion is exposed to the conductive area from the whole of the first opening, and is exposed to the other surface at an inner half portion of the fourth opening, a rectangular second conductive portion is provided at a position corresponding to the second opening and the fifth opening, the second conductive portion is exposed to the other surface from the whole of the second opening and is exposed from the outside, and a half of the fifth opening faces the other surface, and further, on the one surface of the circuit board, a ground line is provided at a position corresponding to the third opening, the ground line is exposed to the other surface from the whole of the third opening, and on the one surface of the circuit board, a connection portion for electrically connecting the ground line and the third through hole is provided.
According to a preferable mode, the circuit board and the adhesive sheet have a surface on which a circuit pattern of the circuit board including a first conductive portion, a second conductive portion, a power receiving wire, a connection portion is formed, a part of the input bus bar is exposed from the fourth opening and the first hole, and a part of the output bus bar is exposed from the fifth opening and the second hole, the circuit board is formed by forming a pattern including the conductive portion and the like on one surface by etching using a polyimide base material, and attaching an insulating cover film to the pattern, the first conductive portion, the second conductive portion, the power receiving wire, the connection portion each use 35 μm copper foil, and each conductive sheet is made of 0.2mm to 0.5mm copper alloy and has a surface thereof tin, nickel or the like, the FET has a rectangular parallelepiped shape and has four drain terminals protruding from one side, the FET spans the first opening to the third opening, each drain terminal is welded with a first conductive portion at the first opening, the gate terminal is welded to a third opening of the ground line, the source terminal is welded to the ground line at the second opening, a first conductive strip is arranged in the fourth opening so as to straddle the input bus bar and the first conductive portion and is connected thereto by solder, a second conductive strip is disposed in the fifth opening in such a manner as to straddle the output bus bar and the second conductive portion and is connected thereto by solder, and the adhesive sheet is preferably adapted to contain a thermally conductive filler.
According to a preferred mode, the gate terminal of the FET is connected to the control board via the ground line, the connection portion, the through hole, the connector, the control board based on a signal from the external ECU is input to the FET, on/off of the FET is switched by the signal from the control board, when a predetermined voltage is applied to the gate terminal, the drain terminal and the source terminal of the FET are conducted, and the FET is conducted, the drain terminal of the FET is connected to the input bus line via the first conductive portion and the first conductive strip, and the source terminal of the FET is connected to the output bus line.
Advantageous effects
The invention realizes the distinguishing of the installation parts through the circuit board, the control board and the adhesive sheet part structure with the structure, facilitates the installation of the components, ensures the normal circuit operation in the box body to have structural stability while the installation is carried out, the holes and the openings which are arranged can be accurately connected into the corresponding components, the input bus, the output bus and the terminals thereof can be directly connected with the circuit, the space occupied by the conducting wires is reduced by arranging wires without additionally connecting electric connecting wires, the connection between the input bus and the output bus uses the first conducting bar and the second conducting bar, the electrifying distance of the first conducting part and the second conducting part of the circuit board is reduced, the occupied space is further reduced, the current path is also reduced, meanwhile, the heat conductivity from the first conducting bar and the second conducting bar to the input bus and the output bus is increased, the local temperature rise can be inhibited, and the heat which is generated in a narrow space can not be discharged in time is avoided, in addition, the first and second conductive portions are more stable than the connection between the input and output bus bars only by using solder.
Drawings
Other features, objects, and advantages of the invention will become apparent from the following detailed description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of an electrical junction box of the present invention.
FIG. 2 is a schematic view of the uncapping structure of FIG. 1 according to the present invention.
Fig. 3 is a perspective view of a mounting pattern of the FET of the present invention.
Fig. 4 is a perspective view showing a state where the circuit board is not mounted.
Fig. 5a perspective view of the present invention showing the mounting of a FET.
Fig. 6 is an enlarged plan view of a portion of the first conductive portion and the second conductive portion of the present invention.
Fig. 7 is a partially enlarged plan view showing a mounting pattern of the FET according to the present invention.
FIG. 8 is a sectional view taken along line VII-VII of FIG. 7 of the present invention.
Fig. 9 is a cross-sectional view of the invention taken along line IX-IX of fig. 7.
Description of reference numerals: the electrical junction box 1, the housing 10, the main body 10a, the cover 10b, the connector 11, the connector, the terminal 12a, the input bus bar 14, the input terminal 14a, the through hole 14b, the output bus bar 15, the output terminal 15a, the through hole 15b, the circuit board 2, the adhesive sheet 21, the first hole 210, the second hole 211, the through hole 22, the connection portion 22a, the first conductive portion 24, the second conductive portion 25, the ground line 26, the control board 3, the first opening 41, the second opening 42, the third opening 43, the drain terminal 44, the gate terminal 45, the source terminal 46, the first conductive strip 5, the fourth opening 50, the second conductive strip 6, and the fifth opening 60.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
Referring to fig. 1 to 9, the present invention provides an electrical junction box: the electrical junction box 1 includes a housing 10, the housing 10 having a rectangular parallelepiped shape and including a rectangular flat plate-like main body 10a and a cover 10b covering one surface of the main body 10a over the entire surface, the control board 3 being in a rectangular plate shape and being arranged such that one surface faces the circuit board 2 and a longitudinal direction thereof is along a longitudinal direction of the circuit board 2, a circuit (not shown) of electronic parts such as a resistor, a coil, a capacitor, and a diode and a wiring pattern for electrically connecting these electronic parts are included in the control board 3, a rod-like connector 11 is provided upright on one short side of the circuit board 2, the circuit board 2 is connected to the control board 3 via the connector 11, the second connector 12 has an outer shape of a cylindrical shape, and a plurality of rod-like terminals 12a are provided inside the second connector 12, one ends of the terminals 12a are connected to an externally provided ECU (electronic control unit) via the outside, and, Signal lines (not shown), the other end of each terminal 12a of the second connector 12 is connected to the wiring pattern of the control board 3, the second connector 12 protrudes from the cover 10b as shown in fig. 1 when the cover 10b is mounted to the main body 10a, the electric junction box 1 includes a plurality of FETs (six in the drawing), a plurality of first bus bars 5 (eight in the drawing) and a plurality of second bus bars 6 (six in the drawing), two FETs are arranged along the other short side opposite to the one short side on the other surface of the circuit board 2, and four FETs are arranged side by side along the one long side, a plurality of third through holes 22 connected to the first connector 11 are arranged in parallel on the one short side of the circuit board 2, the first bus bars 5 are mounted so as to sandwich each FET on the other short side of the circuit board 2, three are arranged along the one long side, the second bus bars 6 are arranged two along the other short side of the circuit board 2, and four along one long side, second bus bars 6 are provided to correspond to the FETs, respectively, and are located inside the FETs, the first bus bars 5 and the second bus bars 6 are preferably copper chips having excellent electrical and thermal conductivity, plate-shaped input bus bars 14 and output bus bars 15 are provided on one surface of the main body 10a, the input bus bars 14 are L-shaped in plan view, and L-shaped linear portions are provided along the long side and the short side of the main body 10a, respectively, input terminals 14a are continuously provided at one ends of the input bus bars 14 and protrude from the main body 10a, the output bus bars 15 are rectangular-shaped and are arranged at the center of one surface of the main body 10a, the output bus bars 15 are spaced apart from the input bus bars 14 by a predetermined distance in such a manner that the length direction thereof is along the length direction of the main body 10a, in the output bus bars 15, output terminals 15a are continuously provided at the center of the long side of the input bus bars 14, the output terminal 15a protrudes from the main body 10a, the input bus bar 14 and the output bus bar 15, the input terminal 14a and the output terminal 15a each being a nickel member having a thickness of 2mm and plated with a plating layer on a surface thereof, the input terminal 14a and the output terminal 15a being provided with a first through hole 14b and a second through hole 15b penetrating in a thickness direction, respectively, and being connected to a power source and a load by a bolt (not shown in the figure) inserted into the through holes, the input terminal 14a being connected to the power source, the output terminal 15a being connected to the load, the main body 10a being manufactured by insert molding using an insulating resin material such as a phenol resin or a glass epoxy resin, a resin molded body formed of the insulating resin material being connected with the input terminal 14a, the output terminal 15a, the input terminal 14a, the output bus bar 15 by bonding, further, the resin molded body being arranged between the input terminal 14a and the output terminal 15a and between the input bus bar 14 and the output bus bar 15, the circuit board 2 is bonded to the main body 10a by a rectangular heat conductive and insulating adhesive sheet 21, the circuit board 2 having a first opening 41, a second opening 42, a third opening 43 at positions corresponding to the respective FETs, the second opening 42 and the third opening 43 being located inside the first opening 41, the first opening 41 being larger in area than the second opening 42 and the third opening 43, and the second opening 42 being larger in area than the third opening 43, in the circuit board 2, a fourth opening 50 is provided at a position corresponding to each first conductive sheet 5, further, a fifth opening 60 is provided at a position corresponding to each second conductive strip 6, on one surface of the circuit board 2, a rectangular first conductive portion 24 is provided at a position corresponding to the first opening 41 and the fourth opening 50, the first conductive portion 24 is exposed to the conductive area from the entire first opening 41, and is exposed to the other surface at an inner half of the fourth opening 50, a rectangular second conductive part 25 is provided at positions corresponding to the second opening 42 and the fifth opening 60, the second conductive part 25 is exposed to the other surface from the whole of the second opening 42 and is exposed from the outside, a half of the fifth opening 60 faces the other surface, further, on one surface of the circuit board 2, a ground line 26 is provided at a position corresponding to the third opening 43, the ground line 26 is exposed to the other surface from the whole of the third opening 43, further, on one surface of the circuit board 2, a connection part 22a for electrically connecting the ground line 26 and the third through hole 22 is provided, the first conductive part 24, the second conductive part 25, the land part 26 and the connection part 22a are formed of copper foil, a first hole 210 and a second hole 211 are provided in the adhesive sheet 21 at positions corresponding to the fourth opening 50 and the fifth opening 60 of the circuit board 2, an opening of the first hole 210 corresponds to an opening outer half of the first opening, the opening of the second hole 211 corresponds to the inner half of the opening of the fifth opening 60, the circuit board 2 and the adhesive sheet 21 have surfaces on which a circuit pattern of the circuit board 2 including the first conductive part 24, the second conductive part 25, the electric wire 26, the connection part 22a is formed, a part of the input bus bar 14 is exposed from the fourth opening 50 and the first hole 210, and a part of the output bus bar 15 is exposed from the fifth opening 60 and the second hole 211, the circuit board 2 is formed by forming a pattern including a conductive part on one surface by etching using a polyimide base material, and attaching an insulating cover film to the pattern, the first conductive part 24, the second conductive part 25, the electric wire 26, the connection part 22a each use 35 μm copper foil, and each conductive sheet is made of a copper alloy of 0.2mm to 0.5mm, and the surface thereof is plated with tin, nickel, or the like, the FET has a rectangular parallelepiped shape, and has four drain terminals 44 protruding from one side, FETs cross the first opening 41 to the third opening 43, each drain terminal 44 is welded at the first opening 41 with the first conductive portion 24, a gate terminal 45 is welded at the third opening 43 of the ground line 26, a source terminal 46 is welded to the ground line 26 at the second opening 42, a first conductive strip 5 is arranged in the fourth opening 50 to cross the input bus bar 14 and the first conductive portion 24 and to be connected thereto by solder, a second conductive strip 6 is provided in the fifth opening 60 in a manner to cross the output bus bar 15 and the second conductive portion 25 and to be connected thereto by solder, the adhesive sheet 21 preferably employs a tape containing a heat conductive filler so that heat generated by the FETs can be conducted to the bus bar side and dissipated, and heat resistance of the adhesive sheet 21 during reflow can be improved, the gate terminal 45 of the FETs is conducted via the ground line 26, The connection portion 22a, the through hole 22, the connector 11 are connected to the control board 3, the control board 3 based on a signal from the external ECU is input to the FET, on/off of the FET is switched by the signal from the control board 3, the drain terminal 44 and the source terminal 46 are turned on and the FET is turned on when a predetermined voltage is applied to the gate terminal 45, the drain terminal 44 of the FET is connected to the input bus bar 14 via the first conductive portion 24 and the first conductive strip 5, the source terminal 46 of the FET is connected to the output bus bar, therefore, when the FET is turned on by the signal input from the control board 3, the electric power supplied from the input terminal 14a depends on the first conductive portion 24, the second conductive portion 25 and the drain of the FET, the signal is output from the output terminal 15a by the output bus bar 15 via the drain terminal 44 and the source terminal 46, and finally the electric power is supplied from the power source to the load through the electric junction box 1, when the FET is turned off by the signal input from the control board 3, conduction between the drain terminal 44 and the source terminal 46 of the FET is not made, and from the cessation of power to the load, the FET passes through the first conductive portion 24 and the first conductive strip 5 or the second conductive portion 25 of the circuit board 2 and in the second conductive strip 6, even if the distance between the terminals of the FETs is not reduced, the connection between the input bus 14 and the output bus 15 can be made, by using the first conductive strip 5 and the second conductive strip 6, the distance of energization of the first conductive part 24 and the second conductive part 25 of the circuit board 2 is reduced, and the current path is reduced, and in addition, by directly welding first conductive strip 5 and second conductive strip 6, the thermal conductivity to input bus bar 14 and output bus bar 15 is increased, and a local temperature rise can be suppressed, and in addition, the first conductive portion 24 and the second conductive portion 25 are more stable than the connection between the input bus bar 14 and the output bus bar 15 only by using solder.
The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the invention or exceeding the scope of the claims set out below.
Claims (8)
1. An electrical junction box characterized by: the electrical junction box includes a housing, a main body, a cover, a connector, a terminal, an input bus bar, an input terminal, a through hole, an output bus bar, an output terminal, a through hole, a circuit board, an adhesive sheet, a first hole, a second hole, a through hole, a connection portion, a first conductive portion, a second conductive portion, a ground line, a control board, a first opening, a second opening, a third opening, a drain terminal, a gate terminal, a source terminal, a first conductive strip, a fourth opening, a second conductive strip, a fifth opening housing, the housing having a rectangular parallelepiped shape and including a rectangular flat plate-shaped main body and a cover covering one surface of the main body over the entire surface, a rod-shaped connector erected on one short side of the circuit board, the circuit board being connected to the control board via the connector, the second connector having a cylindrical shape, and a plurality of rod-shaped terminals provided inside the second connector, the electrical junction box includes a plurality of FETs, a plurality of first conductive strips and a plurality of second conductive strips arranged to correspond to the FETs, respectively, and located inside the FETs, plate-shaped input and output bus bars provided on one surface of the main body, the circuit board being bonded to the main body by a rectangular heat-conductive and insulating adhesive sheet, the circuit board having a first opening, a second opening, and a third opening at positions corresponding to the respective FETs, the second and third openings being located inside the first opening, the first and second conductive portions being provided with a first hole and a second hole at positions corresponding to a fourth and fifth openings of the circuit board in the adhesive sheet, the open hole of the first hole corresponding to an outer half of the open hole of the first opening, and the open hole of the second hole corresponding to an inner half of the open hole of the fifth opening.
2. An electrical junction box according to claim 1, wherein: the control board is rectangular plate-shaped and is arranged such that one surface faces the circuit board and the longitudinal direction thereof is along the longitudinal direction of the circuit board.
3. An electrical junction box according to claim 1, wherein: the input bus bar is L-shaped in a plan view, and L-shaped linear portions are respectively provided along long sides and short sides of a body, an input terminal is continuously provided at one end of the input bus bar and protrudes from the body, an output bus bar is rectangular-shaped and is disposed at a center of one surface of the body, the output bus bar is equal to the input bus bar at a predetermined distance in a manner that a length direction thereof is along a length direction of the body, in the output bus bar, an output terminal is continuously provided at a center of the long side of the input bus bar, the output terminal protrudes from the body, the input bus bar and the output bus bar are respectively provided with a first through hole, a second through hole penetrating in a thickness direction, and are connected to a power source and a load by a bolt inserted into the through holes, the input terminal is connected to the power source, and the output terminal is connected to the load.
4. An electrical junction box according to claim 1, wherein: the body is manufactured by insert molding using an insulating resin material.
5. An electrical junction box according to claim 1, wherein: the first opening area is larger than the second opening and the third opening, the second opening area is larger than the third opening, the fourth opening is arranged at a position corresponding to each first conductive strip, and the fifth opening is arranged at a position corresponding to each second conductive strip in the circuit board.
6. An electrical junction box according to claim 5, wherein: on one surface of the circuit board, a rectangular first conductive portion is provided at positions corresponding to the first opening and the fourth opening, the first conductive portion is exposed to the conductive area from the entire first opening, and is exposed to the other surface at an inner half portion of the fourth opening, a rectangular second conductive portion is provided at positions corresponding to the second opening and the fifth opening, the second conductive portion is exposed to the other surface from the entire second opening and is exposed from the outside, and a half portion of the fifth opening faces the other surface.
7. An electrical junction box according to claim 1, wherein: the circuit board and the adhesive sheet have surfaces on which a circuit pattern of the circuit board including a first conductive portion, a second conductive portion, a power receiving wire, a connection portion is formed, a portion of an input bus bar is exposed from a fourth opening and a first hole, and a portion of an output bus bar is exposed from a fifth opening and a second hole, the circuit board is formed by forming a pattern including a conductive portion on one surface by etching using a polyimide substrate and attaching an insulating cover film to the pattern, the first conductive portion, the second conductive portion, the power receiving wire, the connection portion each use 35 μm copper foil, and each conductive sheet is made of 0.2mm to 0.5mm copper alloy and is plated with tin and nickel on a surface thereof, the FET has a rectangular parallelepiped shape and has four drain terminals protruding from one side, the FET spans the first opening to the third opening, each drain terminal is soldered with the first conductive portion at the first opening, the gate terminal is soldered to the third opening of the ground line, the source terminal is soldered to the ground line at the second opening, the first conductive strip is disposed in the fourth opening so as to straddle the input bus bar and the first conductive portion and is connected thereto by solder, the second conductive strip is disposed in the fifth opening so as to straddle the output bus bar and the second conductive portion and is connected thereto by solder, and the adhesive sheet preferably contains a thermally conductive filler.
8. An electrical junction box according to claim 1, wherein: a gate terminal of the FET is connected to a control board via a ground line, a connection portion, a through hole, and a connector, the control board based on a signal from an external ECU is input to the FET, on/off of the FET is switched by the signal from the control board, when a predetermined voltage is applied to the gate terminal, the drain terminal and the source terminal are conducted, and the FET is conducted, the drain terminal of the FET is connected to an input bus via a first conductive portion and a first conductive strip, and the source terminal of the FET is connected to an output bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327259.2A CN111525476B (en) | 2020-04-23 | 2020-04-23 | Electrical junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010327259.2A CN111525476B (en) | 2020-04-23 | 2020-04-23 | Electrical junction box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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| JP2020013894A (en) * | 2018-07-18 | 2020-01-23 | 株式会社オートネットワーク技術研究所 | Circuit board |
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| CN1195913A (en) * | 1997-03-13 | 1998-10-14 | 住友电装株式会社 | Electrical connection box |
| EP1158643A2 (en) * | 2000-05-16 | 2001-11-28 | Autonetworks Technologies, Ltd. | Power distributor for vehicle |
| CN1744385A (en) * | 2004-08-16 | 2006-03-08 | 住友电装株式会社 | Electric junction box and connection structure of tuning fork terminal |
| CN102035160A (en) * | 2009-10-01 | 2011-04-27 | 矢崎总业株式会社 | Electric junction box and power supply device having the same |
| CN102386593A (en) * | 2010-08-27 | 2012-03-21 | 矢崎总业株式会社 | Electrical connection box |
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| CN111525476B (en) | 2021-11-09 |
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Effective date of registration: 20211021 Address after: 831500 home decoration materials Industrial Park, Sutong small and micro entrepreneurship Park, Fukang Industrial Park, Changji Hui Autonomous Prefecture, Xinjiang Uygur Autonomous Region b-06-01-10, b-06-01-11 Applicant after: Xinjiang Silk Road Liuhe Electric Technology Co.,Ltd. Address before: 362000 Daishang 296, Liandai village, Baiqi Hui Township, Taiwan investment zone, Quanzhou City, Fujian Province Applicant before: Guo Lili |
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Denomination of invention: An electrical junction box Effective date of registration: 20221215 Granted publication date: 20211109 Pledgee: Bank of China Limited Changji Hui Autonomous Prefecture Branch Pledgor: Xinjiang Silk Road Liuhe Electric Technology Co.,Ltd. Registration number: Y2022980027762 |
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Address after: 831500 home decoration materials Industrial Park, Sutong small and micro entrepreneurship Park, Fukang Industrial Park, Changji Hui Autonomous Prefecture, Xinjiang Uygur Autonomous Region b-06-01-10, b-06-01-11 Patentee after: Xinjiang Silk Road Liuhe Technology Co.,Ltd. Country or region after: China Address before: 831500 home decoration materials Industrial Park, Sutong small and micro entrepreneurship Park, Fukang Industrial Park, Changji Hui Autonomous Prefecture, Xinjiang Uygur Autonomous Region b-06-01-10, b-06-01-11 Patentee before: Xinjiang Silk Road Liuhe Electric Technology Co.,Ltd. Country or region before: China |