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WO2019017593A1 - Ensemble relais de puissance - Google Patents

Ensemble relais de puissance Download PDF

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Publication number
WO2019017593A1
WO2019017593A1 PCT/KR2018/006566 KR2018006566W WO2019017593A1 WO 2019017593 A1 WO2019017593 A1 WO 2019017593A1 KR 2018006566 W KR2018006566 W KR 2018006566W WO 2019017593 A1 WO2019017593 A1 WO 2019017593A1
Authority
WO
WIPO (PCT)
Prior art keywords
support plate
contact portion
bus bar
heat
metal member
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/KR2018/006566
Other languages
English (en)
Korean (ko)
Inventor
원민호
황승재
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.)
Amogreentech Co Ltd
Original Assignee
Amogreentech Co 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
Priority claimed from KR1020180066367A external-priority patent/KR102411445B1/ko
Application filed by Amogreentech Co Ltd filed Critical Amogreentech Co Ltd
Priority to JP2019559044A priority Critical patent/JP2020518956A/ja
Priority to EP18835181.1A priority patent/EP3656601B1/fr
Priority to CN201880033409.XA priority patent/CN110692116B/zh
Priority to US16/608,055 priority patent/US10881029B2/en
Publication of WO2019017593A1 publication Critical patent/WO2019017593A1/fr
Anticipated expiration legal-status Critical
Priority to JP2021181285A priority patent/JP2022020761A/ja
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H45/00—Details of relays
    • H01H45/12—Ventilating; Cooling; Heating
    • 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
    • H02G5/00—Installations of bus-bars

Definitions

  • the present invention relates to a power relay assembly, and more particularly to a power relay assembly that can be used in, for example, an electric vehicle.
  • An electric car is a generic name of a car that uses electricity.
  • electric vehicles are divided into electric vehicles (EV) operated by electricity alone and hybrid electric vehicles (HEV) using electric and fossil fuels.
  • EV electric vehicles
  • HEV hybrid electric vehicles
  • An electric vehicle has a power relay assembly between a high voltage battery and a motor.
  • a power relay assembly serves to selectively supply power to a high-voltage battery.
  • the power relay assembly includes a main relay, a pre-charge relay, and a pre-charge resistor, and the above-described components are electrically connected to each other via a bus bar do.
  • the main relay supplies or disconnects power between the high voltage battery and the motor, and the precharge relay and precharge resistors prevent damage to the device by the initial current.
  • busbar is a conductor with low impedance and high current capacity, which can connect two or more circuits individually or connect multiple equivalence points within a system.
  • the power relay assembly is installed in a trunk or cabine room for connection to a high voltage battery installed in a trunk. Therefore, it is necessary to secure the heat dissipation performance of the main relay or the precharge relay to prevent performance deterioration and damage caused by heat.
  • Another object of the present invention is to provide a power relay assembly capable of realizing an electromagnetic wave shielding effect while reinforcing strength by including a plate-shaped metal member in the support plate.
  • a semiconductor device comprising: a support plate having at least one electric element mounted on one surface thereof and including a plastic material having heat dissipation and insulation; And at least one bus bar electrically connected to the electric element and including a contact portion directly in contact with the one surface of the support plate, wherein the contact portion is fixed to one surface of the support plate, Assembly.
  • the contact portion may be in contact with a portion of the support plate made of the plastic material having the heat radiation property and the insulation property.
  • the support plate may include a receiving groove that is drawn inwardly in a region corresponding to the contact portion, and the contact portion may be inserted into the receiving groove.
  • the depth of the receiving groove may be the same as the thickness of the contacting portion, and an adhesive member or a heat transfer material may be interposed between the bottom surface of the receiving groove and the contacting portion.
  • the contact portion may be fixed to one surface of the support plate via a fixing member.
  • the fixing member may be any one of a clip member, a pin member, and a bolt member.
  • the support plate may further include a plate-shaped metal member spaced apart from the contact portion by a distance.
  • the metal member may be embedded in the support plate or may be fixed to one surface of the support plate so that one surface thereof is exposed to the outside.
  • the metal member may be disposed on the support plate so as to be separated from the contact portion by 1 mm or more.
  • fine grooves may be formed on the surface of the metal member to improve bonding strength with the support plate.
  • the above-described power relay assembly may be formed with a coating layer having an insulating property and a heat radiating property on the exposed surface.
  • the bus bar may be formed of a conductive metal.
  • the busbar may be made of aluminum, and a coating layer having insulation and heat dissipation may be formed on the surface.
  • the power relay assembly may include at least one cover for preventing external exposure of the bus bar, and the cover may be made of a plastic material having at least a part of heat radiation and insulation.
  • the support plate for fixing the bus bar can have heat dissipation.
  • the heat generated from the bus bar can be rapidly dispersed through the support plate, so that deterioration of the performance due to heat and damage of the components can be prevented in advance.
  • the support plate can shield the electromagnetic wave, it is possible to prevent the influence between the components due to the noise and to prevent the malfunction caused by the electromagnetic wave in advance.
  • FIG. 1 is a schematic diagram showing a power relay assembly according to an embodiment of the present invention
  • FIG. 2 is a view showing a state in which electric elements are removed in FIG. 1, in which a part of a bus bar is separated from a support plate,
  • FIG. 3 is a sectional view taken along the line A-A in Fig. 2,
  • FIG. 4 is a view showing a case where a coating layer is formed on the exposed surface in FIG. 3,
  • FIG. 5 and 6 are views showing a case where a support plate applicable to a power relay assembly according to an embodiment of the present invention includes a metal member
  • FIG. 7 is a view showing a case where a support plate applicable to a power relay assembly according to an embodiment of the present invention includes a plurality of plates, and is a sectional view seen from the same direction as FIG. 4,
  • FIG. 8 is a schematic view showing a power relay assembly according to another embodiment of the present invention.
  • Fig. 9 is a sectional view taken along the line B-B in Fig. 8,
  • FIG. 10 is a schematic view showing a power relay assembly according to another embodiment of the present invention.
  • FIG. 11 is a cross-sectional view taken along the line C-C in Fig. 10,
  • FIG. 12 is a schematic view showing a power relay assembly according to another embodiment of the present invention.
  • FIG. 13 is a cross-sectional view along the line D-D in Fig. 12,
  • FIG. 14 is a cross-sectional view of a bus bar that can be applied to a power relay assembly according to an embodiment of the present invention, in which a coating layer is formed on a surface,
  • FIG. 15 is a schematic view showing a state where a power relay assembly according to an embodiment of the present invention is mounted on a case of an electric vehicle
  • 16 is a schematic view showing a state in which a power relay assembly according to an embodiment of the present invention is mounted on a case of an electric vehicle and sealed through a single cover.
  • the power relay assembly 100 can supply power to the drive control unit for controlling the drive voltage by interrupting or connecting the high voltage current supplied from the battery.
  • the power relay assembly 100 includes a support plate 110, at least one electric element 10, 20, 30, and at least one bus bar (not shown) 120).
  • the support plates 110, 210, and 310 may be in the form of a plate having a predetermined area as shown in FIGS. 1 to 13, and may support the electric devices and the bus bars 120 that electrically connect them.
  • the support plates 110, 210, and 310 may have both heat dissipation and insulation.
  • the supporting plate 110, 210, and 310 can dissipate the heat generated during operation of the electric device while externally supporting the electric devices 10, 20, and 30 and the bus bar 120 .
  • the support plates 110, 210, and 310 can prevent an electrical short between the bus bar 120 and the electric devices 10, 20, and 30.
  • the support plates 110, 210, and 310 may be made of a plastic material having at least a part of heat dissipation and insulation, and a part of the bus bar 120 may be fixed so as to be in contact with a part having heat dissipation and insulation.
  • the contact part 121 of the bus bar 120 is made of the plastic material having the above- 210, 310 to contact the portion of the support plate 110, 210,
  • the support plates 110, 210, and 310 may be an injection molded product formed of a resin-forming composition having at least a part of heat radiation and insulation, and the contact part 121 of the bus bar 120 may be formed of the resin- 110, 210, and 310 so as to be in contact with a portion formed by the support plate 110, 210, and 310, respectively.
  • the heat transferred to the support plates 110, 210, and 310 through the contact portion 121 can be rapidly dispersed or discharged to the outside, thereby preventing deterioration in performance due to heat and damage to components.
  • one or more power relay assemblies 100 may be installed in the case 1 in a case 1,
  • the heat generated from the electric elements 10, 20, 30 and / or the bus bar 120 is transmitted to the lower portion of the power relay assembly 100 through the natural convection or the forced convection, Can be transmitted to the case (1) through the plates (110, 210, 310), so that the heat generated from the electric elements (10, 20, 30) and / or the bus bar (120) can be efficiently discharged.
  • the support plates 110, 210 and 310 are not limited thereto, and the support plates 110, 210 and 310 may be made of a plastic material having a heat radiation property and an insulation property as a whole.
  • the support plates 110, 210, and 310 may be formed of a plastic material having a total heat dissipation property so as to increase the overall heat capacity and increase the heat radiation performance.
  • the support plates 110, 210, and 310 may be formed of a portion made of a resin-forming composition having heat radiation and insulation properties and a portion made of a general plastic material having insulation properties.
  • the support plates 110 and 210 may be a single member integrally formed as shown in FIGS.
  • the support plate 310 may have a plurality of plates 311 and 312 coupled to each other as shown in FIG.
  • the support plate 210 may include a plate-shaped metal member 114 having a predetermined area so as to improve mechanical strength while maintaining the heat radiation performance.
  • the metal member 114 may be completely buried in the support plate 210 or partially buried in the support plate 210.
  • the metal member 114 may be embedded in a portion of the support plate 210 made of a plastic material having insulation and heat dissipation.
  • the metal member 114 may be integrated with a portion made of a plastic material having insulation and heat dissipation through insert injection molding.
  • the support plate 210 can achieve the required heat dissipation performance while reinforcing the mechanical strength through the metal member 114.
  • the support plate 210 can reduce the thickness of the support plate 310 by embedding the metal member 114 to enhance and reinforce the mechanical strength.
  • the support plate 210 may shield electromagnetic waves. Accordingly, the support plate 210 shields the electromagnetic wave generated from the electric device, thereby preventing the influence between the components due to the noise and preventing the malfunction.
  • the metal member 114 can be used without limitation in the case of a metal having a predetermined thermal conductivity.
  • the metal member 114 may be one metal selected from the group consisting of aluminum, magnesium, iron, titanium, and copper, or an alloy including at least one metal.
  • the metal member 114 may be embedded in the support plate 210 such that the entire surface of the metal member 114 is completely surrounded by a portion made of a plastic material having insulation and heat dissipation.
  • the metal member 114 may be disposed on one side of the support plate 210 so that one side of the metal member 114 is exposed to the outside while being in contact with a portion of a plastic material having insulation and heat dissipation.
  • the metal member 114 may be connected to a ground line.
  • the electromagnetic wave shielded through the metal member 114 is smoothly discharged through the ground line, thereby further enhancing the electromagnetic wave shielding effect.
  • the ground line may be a vehicle body of a metal material.
  • the metal member 114 may be surface-treated so that the interface between the metal member 114 and the portion made of a plastic material having insulation and heat-releasing property after the injection is injected. As a result, the metal member 114 can increase the bonding force with a portion made of a plastic material having insulation and heat dissipation.
  • the metal member 114 may be formed with at least one nano-sized fine grooves (not shown) in a predetermined pattern in order to improve bonding strength with the insulating and heat-dissipating plastic member.
  • the metal member 114 is separated from the contact portion 121 of the bus bar 120 fixed to one surface of the support plate 310, (d). That is, the metal member 114 may be partially or completely embedded in the support plate 210 while maintaining a predetermined distance d on the lower side of the contact portion 121 of the busbar 120.
  • the contact portions 121 of the metal member 114 and the bus bar 120 may be spaced apart by an interval d of 1 mm or more. This is to satisfy the withstand voltage property while maintaining the insulating property.
  • the metal member 114 may be a plate-shaped metal plate having a predetermined area as described above. However, the metal member 114 is not limited thereto, and may be provided in a bar shape having a predetermined aspect ratio.
  • the metal member 114 may be a mesh type having a closed loop-like rim such as a square or a circle, and a plurality of wires or bars spaced apart at predetermined intervals on the inner side of the rim.
  • the plurality of wires or bars disposed in the rim may be any one of a parallel structure, a lattice structure, a honeycomb structure, and various structures in which they are mutually combined.
  • the heat-dissipating and insulating plastics used for constructing the above-described support plates 110, 210, and 310 may be in the form of an insulating heat-dissipating filler dispersed in a polymer matrix.
  • the polymer matrix may be used without restriction if it is a polymer compound capable of injection molding without impairing the dispersibility of the heat-radiating filler.
  • the polymer matrix may be a known thermoplastic polymer compound, and the thermoplastic polymer compound may be a polyamide, a polyester, a polyketone, a liquid crystal polymer, a polyolefin, a polyphenylene sulfide (PPS), a polyether ether ketone (PEEK ), Polyphenylene oxide (PPO), polyether sulfone (PES), polyetherimide (PEI) and polyimide, or a mixture or copolymer of two or more kinds thereof.
  • the insulating heat-radiating filler may be used without limitation as long as it has both insulation and heat radiation.
  • the insulating heat-radiating filler is selected from the group consisting of magnesium oxide, titanium dioxide, aluminum nitride, silicon nitride, boron nitride, aluminum oxide, silica, zinc oxide, barium titanate, strontium titanate, beryllium oxide, silicon carbide and manganese oxide And may include one or more species.
  • the insulating heat-radiating filler may be porous or non-porous, and may be a core-shell type filler in which a known conductive heat-radiating filler such as a carbon-based or metal is used as a core and an insulating component surrounds the core.
  • the surface may be modified with a functional group such as a silane group, an amino group, an amine group, a hydroxyl group or a carboxyl group so as to improve wettability or the like and improve interfacial bonding strength with the polymer matrix.
  • a functional group such as a silane group, an amino group, an amine group, a hydroxyl group or a carboxyl group so as to improve wettability or the like and improve interfacial bonding strength with the polymer matrix.
  • the present invention is not limited to the insulating and heat-dissipating plastics, and any plastic that has both insulation and heat dissipation can be used without limitation.
  • the plurality of electric devices 10, 20, and 30 may be mounted on one surface of the support plates 110, 210, and 310 and may be electrically connected to each other through the bus bar 120. Accordingly, the electric devices 10, 20, and 30 may block or connect the high voltage current supplied from the battery to the driving control unit.
  • the electric devices 10, 20 and 30 may be a main relay, a precharge relay, a precharge resistor, a battery current sensor, a main fuse, and the like, and may be connected to each other via the busbar 120 or a cable And can be electrically connected. Also, the plurality of bus bars 120 may be electrically connected through circuit patterns (not shown) formed on the support plates 110, 210, and 310.
  • the electric elements 10, 20, and 30 supply electric power to the drive control unit (not shown) for controlling the drive voltage by interrupting or connecting the high voltage current supplied from the battery, Can be generated.
  • the drive control unit can generate a control signal for driving the motor, and the driving of the motor can be controlled by controlling the inverter and the converter through the control signal.
  • the main relay is connected and the precharge relay is cut off, so that the power of the battery can be applied to the inverter through the main circuit.
  • the main relay when the vehicle is off, the main relay is in a cut-off state, and the connection between the battery and the inverter is cut off, thereby preventing the battery voltage from being transmitted to the motor through the inverter. At this time, when the main relay is in the off state, the capacitor connected to the inverter may be discharged.
  • the precharge relay is connected, and the voltage of the battery is applied to the inverter in a state of being lowered by the precharge resistor, so that charging of the capacitor can be started. Then, when the capacitor is sufficiently charged, the main relay is connected and at the same time, the precharge relay is cut off so that the voltage of the battery can be applied to the inverter.
  • the bus bar 120 may electrically connect a plurality of electric devices mounted on the support plates 110, 210, and 310 to each other.
  • the busbar 120 may be formed of a conductor having a low impedance and a high current capacity, and may distribute the power to various points by connecting two or more electric elements individually or by connecting various equivalent points Can be performed.
  • Such a bus bar 120 may be provided in the shape of a bar having a predetermined length. Also, the bus bar 120 may have a shape in which a part of the entire length is bent once or plural times so that the bus bar 120 can be easily fastened to the electric devices 10, 20 and 30. However, the overall shape of the busbars 120 is not limited thereto, and may be appropriately changed depending on the arrangement position of the electric devices 10, 20, 30 to be connected to each other.
  • the bus bar 120 may be fixed at least a part of the support plate 110, 210, 310 so as to be in contact with one surface of the support plate 110, 210, 310, As shown in FIG. Accordingly, the heat generated during the operation of the electric device can be transmitted to the support plates 110, 210, and 310, and then dispersed or discharged to the outside.
  • the booth bar 120 may include a contact portion 121 directly contacting one surface of the support plates 110, 210, and 310, and the contact portion 121 may be formed of a material having heat dissipation properties and insulation properties among the support plates 110, 210, And may be fixed so as to be in direct contact with a portion made of a plastic material.
  • the booth bar 120 is disposed such that the contact portion 121 is in contact with the support plates 110, 210, and 310 made of a plastic material having heat dissipation and insulation, It can be smoothly transferred to a portion made of a plastic material having heat radiation. Accordingly, the power relay assembly 100 according to an embodiment of the present invention can prevent deterioration in performance due to heat and damage to components.
  • the bus bar 120 may include an extension portion 122 extending from the contact portion 121 by a predetermined length and the extension portion 122 may include at least one end portion of both ends of the contact portion 121, And protrudes outward from the support plates 110, 210, Accordingly, the plurality of electric elements 10, 20, and 30 may be electrically connected to each other through the extended portion 122.
  • the present invention is not limited to the above-described bus bar 120, and the bus bar 120 may include only the contact portion 121 directly contacting the support plates 110, 210 and 310.
  • a plurality of such bus bars 120 may be provided.
  • at least a part of the plurality of bus bars 120 may be connected to a positive terminal and a negative terminal of the battery, a plus terminal and a minus terminal of the inverter, respectively. Accordingly, the plurality of electric devices 10, 20, 30 can block or connect the high voltage current supplied from the battery to the drive control unit side.
  • busbar 120 may be fixed to one surface of the support plates 110, 210, and 310 in various manners.
  • the bus bar 120 may be fixed to one surface of the support plates 110, 210 and 310 by inserting the contact portion 121 into one surface of the support plates 110, 210 and 310 .
  • the support plates 110, 210, and 310 may have at least one receiving groove 112a and 112b that are drawn inward on one side thereof. Accordingly, the bus bar 120 can be fixed to one surface of the support plates 110, 210 and 310 by inserting the contact portions 121 into the receiving grooves 112a and 112b, And may be in surface contact with the plates 110, 210, and 310.
  • the receiving grooves 112a and 112b may have a shape corresponding to the contact portion 121, and the shape of the receiving grooves 112a and 112b may be appropriately changed according to the shape of the busbar 120 . Accordingly, the heat generated during operation of the electric device and the bus bar 120 can be transmitted to the side of the support plates 110, 210, and 310 having heat dissipation, and can be dispersed or released to the outside.
  • the depth of the receiving recesses 112a and 112b may be the same as the thickness of the abutting portion 121.
  • the depth of the receiving recesses 112a and 112b may be the same as the thickness of the abutting portion 121,
  • An adhesive member (not shown) or a heat transfer material may be interposed.
  • the adhesive member may be a general adhesive member that provides adhesive or adhesive force, but may be a heat-dissipating adhesive member including a thermally conductive filler. Accordingly, the heat transfer material or the heat dissipation adhesive member can smoothly transfer the heat existing in the bus bar 120 to the side of the support plates 110, 210, and 310 having heat dissipation capability.
  • the receiving grooves 112a and 112b are formed in such a manner that the receiving grooves 112a and 112b are drawn inward from one surface of the supporting plate 110.
  • the receiving grooves 112a and 112b are formed in the supporting plates 110, (Not shown) that protrudes from one surface of the substrate (not shown).
  • the projecting portion may be formed to partially or wholly surround the rim of the contact portion 121.
  • the bus bar 120 is fixed to one surface of the support plate 110 by fixing the contact portion 121 via a separate fixing member 140, 240, .
  • the support plate 110 may include at least one fixing member 140, 240, 340 in a region corresponding to the contacting portion 121, and the contacting portion 121 may be fixed through the fixing member 140, 240, have.
  • the fixing members 140 and 240 may be elastic members that are elastically deformed as shown in FIGS. 8 to 11, and one end of the clip member is in contact with the upper surface of the contact unit 121 .
  • the contact portion 121 is kept in contact with the support plate 110 through the fixing members 140 and 240 so that the busbar 120 is prevented from being separated from the support plate 110 .
  • the clip member may be disposed at the edge of the contact portion 121, and may include a portion protruding in a direction parallel to the upper surface of the contact portion 121 have. Accordingly, the clip member can support the side end and / or the front end of the contact portion 121 by the protruding portion.
  • the clip members may be formed of a pair of members spaced apart from each other, and the clip member may have one end fixed to the support plate 110 .
  • the pair of members may include a portion protruding in a direction parallel to the upper surface of the contact portion 121.
  • the contact portion 121 may have a through hole 121a at a position corresponding to the clip member Can be formed.
  • the pair of members can pass through the through hole 121a of the contact portion 121 through elastic deformation And the protruding portion can support the rim of the through hole 121a.
  • the fixing member 340 may be a known bolt member, as shown in Figs.
  • a fastening hole 121b may be formed in the contact portion 121 side. Accordingly, when the contact portion 121 and the support plate 110 are coupled to each other through the bolt member, the busbar 120 may be fixed to one surface of the support plate 110.
  • a guide member 342 protruding to guide the position of the contact portion 121 may be provided on one side of the support plate 110.
  • the fixing member is not limited thereto, and a known pin member may be used, and the fixing members shown in Figs. 8 to 13 may be combined with each other.
  • the support plate 110 shown in Figs. 8 to 13 may be applied to the support plates 210 and 310 shown in Figs. 5 to 7.
  • the power relay assembly 100 may further include a protective coating layer 150.
  • the protective coating layer 150 may cover the outer surfaces of the support plates 110, 210, and 110 and the bus bar 120 as shown in FIGS. Also, the protective coating layer 150 may cover the outer surfaces of the electric elements 10, 20, and 30 mounted on one side of the support plates 110, 210, and 310.
  • the application position of the protective coating layer 150 is not limited thereto, and it may be applied only to the outer surface of the support plates 110, 210 and 310, or may be applied only to the outer surface of the busbar 120. Also, the protective coating layer 150 may be applied to the support plate 110 shown in FIGS.
  • Such a protective coating layer 150 can prevent scratches and the like due to physical stimulation applied to the surfaces of the support plates 110, 210, and 310 and the bus bar 120, and further improve the insulation of the surface.
  • the protective coating layer 150 may prevent the separation of the insulating heat-dissipating filler located on the surface when the support plates 110, 210, and 310 are formed of plastic in which the insulating heat-dissipating filler is dispersed.
  • the protective coating layer 150 may be formed of a known thermosetting polymer compound or a thermoplastic polymer compound.
  • the thermosetting polymer compound may be one kind of compound selected from the group consisting of epoxy type, urethane type, ester type and polyimide type resins, or a mixture or copolymer of two or more kinds.
  • the thermoplastic polymer compound may be at least one selected from the group consisting of polyamides, polyesters, polyketones, liquid crystal polymers, polyolefins, polyphenylene sulfide (PPS), polyetheretherketone (PEEK), polyphenylene oxide (PPO) ), A polyetherimide (PEI), and a polyimide, or a mixture or copolymer of two or more kinds, but is not limited thereto.
  • the protective coating layer 150 is applied to the outer surfaces of the support plates 110, 210, and 310 to prevent the heat transmitted to the support plates 110, 210, and 310 from being emitted to the outside.
  • the protective coating layer 150 may further include an insulating heat-radiating filler so as to improve heat radiation characteristics to the outside.
  • the insulating heat-dissipating filler can be used without limitation in the case of a known insulating heat-dissipating filler.
  • the protective coating layer 150 may include an insulating heat-radiating filler dispersed in a polymer matrix so as to have heat dissipation and insulation properties at the same time as the support plates 110, 210, and 310 described above.
  • the insulating heat-radiating filler included in the protective coating layer 150 may be the same as or different from the insulating heat-radiating filler included in the support plates 110, 210, and 310.
  • the bus bar 120 may be formed of a conductor having a low impedance and a high current capacity as described above.
  • the bus bar 120 may be made of a metal such as copper or aluminum.
  • the bus bar 120 may be formed by coating the surface of the heat dissipation coating layer C on the surface of the heat dissipation coating layer C, May be the same as the protective coating layer 150 including the above-described insulating heat-dissipating filler. That is, the bus bar 120 made of an aluminum material can have a light weight as compared with the bus bar 120 made of a copper material. This is because aluminum has a relatively smaller specific gravity than copper due to the characteristics of the material. Accordingly, the power relay assembly using aluminum as the material of the bus bar 120 may be much lighter than the power relay assembly using the copper as the material of the bus bar 120.
  • the aluminum when aluminum is made of the same size as the aluminum, the aluminum has a smaller thermal conductivity than copper, and the heat dissipation performance may be lowered. In order to achieve an equivalent level of heat dissipation performance, the thickness of the bus bar must be increased.
  • the booth bar 120 is made of aluminum, a heat radiation coating layer C including an insulating heat radiation filler is formed on the surface of the booth bar 120, The heat dissipation performance of the same level can be realized while minimizing the increased thickness as compared with the case where the bar is made of copper material.
  • the power relay assembly using aluminum as the material of the bus bar 120 can be realized in a weight reduction compared to the power relay assembly using copper as the material of the bus bar 120, and the production cost can be reduced.
  • a booth bar made of aluminum material should be about 1.5 times thicker than a booth bar made of copper material having the same shape to achieve the same level of heat radiation performance.
  • the heat-radiating coating layer (C) including the insulating heat-radiating filler is formed on the surface of the busbars, that is, the busbars formed of the aluminum material and having the heat-radiating coating layer (C) It is possible to achieve an equivalent level of heat dissipation performance even if the thickness of the bus bar is approximately 1.3 times as thick as that of the conventional bus bar.
  • the material of the bus bar 120 is not limited thereto, and any conductor having low impedance and high current capacity can be used without limitation.
  • the power relay assembly 100 includes at least one cover (not shown) for covering and protecting the electric devices 10, 20, 30 and the bus bar 120 as shown in FIG. 130).
  • the cover 130 prevents the electric elements 10, 20, 30 and the bus bar 120 mounted on one side of the support plates 110, 210, 310 from being exposed to the outside, 20 and 30 and the bus bar 120, respectively.
  • the cover 130 may be fastened directly to the support plates 110, 210 and 310 or may be fastened to brackets not shown separately provided at the edge of the support plates 110, 210 and 310.
  • cover 130 may be in the form of a box with one side opened.
  • the present invention is not limited thereto, and the cover 130 may be formed of a single member, or a plurality of components may be assembled together to form a single enclosure.
  • cover 130 may cover one support plate 110, 210, or 310 as shown in FIGS. 1 and 14, or may have a plurality of support plates 110, 210, and 310 may be covered by a single cover 130 at the same time.
  • the cover 130 may be made of a general plastic material having insulation properties, but at least a part of the cover 130 may be made of a plastic material having heat dissipation and insulation properties like the support plates 110, 210, and 310 described above.

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  • Electromagnetism (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention concerne un ensemble relais de puissance. Un ensemble relais de puissance selon un mode de réalisation donné à titre d'exemple de la présente invention comprend : une plaque de support équipée d'au moins un élément électrique sur une surface de celle-ci et comprenant un matériau plastique ayant des propriétés de dissipation de chaleur et d'isolation ; et au moins une barre omnibus qui comprend une partie de contact qui est électriquement connectée à l'élément électrique et qui est directement en contact avec une surface de la plaque de support, la partie de contact de la barre omnibus étant fixée à une surface de la plaque de support.
PCT/KR2018/006566 2017-07-20 2018-06-11 Ensemble relais de puissance Ceased WO2019017593A1 (fr)

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CN201880033409.XA CN110692116B (zh) 2017-07-20 2018-06-11 功率继电器组件
US16/608,055 US10881029B2 (en) 2017-07-20 2018-06-11 Power relay assembly
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EP4321391A1 (fr) * 2022-08-11 2024-02-14 Fico Triad, S.A. Boîtier de raccordement
TWI891294B (zh) * 2024-03-21 2025-07-21 威剛科技股份有限公司 馬達控制器裝置

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EP4321391A1 (fr) * 2022-08-11 2024-02-14 Fico Triad, S.A. Boîtier de raccordement
TWI891294B (zh) * 2024-03-21 2025-07-21 威剛科技股份有限公司 馬達控制器裝置

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