Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H3/00—Air heaters
  • F24H3/02—Air heaters with forced circulation
  • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
  • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
  • F24H3/0429—For vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
  • B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
  • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H3/00—Air heaters
  • F24H3/02—Air heaters with forced circulation
  • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
  • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
  • F24H3/0429—For vehicles
  • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
• • 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
  • H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
• • 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 the printed circuit board, e.g. insert mounted components [IMC]
  • H05K1/184—Components including terminals inserted in holes through the printed circuit board and connected to printed contacts on the walls of the holes or at the edges thereof or protruding over or into the holes
• • 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
  • H05K2201/06—Thermal details
  • H05K2201/062—Means for thermal insulation, e.g. for protection of parts
• • 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
  • H05K2201/09—Shape and layout
  • H05K2201/09009—Substrate related
  • H05K2201/09063—Holes or slots in insulating substrate not used for electrical connections
• • 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
• • 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
  • H05K2201/10227—Other objects, e.g. metallic pieces
  • H05K2201/10272—Busbars, i.e. thick metal bars mounted on the PCB as high-current conductors
• • 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
  • H05K2201/10227—Other objects, e.g. metallic pieces
  • H05K2201/1031—Surface mounted metallic connector elements
• • 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
  • H05K2201/10227—Other objects, e.g. metallic pieces
  • H05K2201/10424—Frame holders
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
  • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

• the present invention relates to a control module of an electrical apparatus, and a heating device, in particular for a motor vehicle, comprising such a control module, and a method of manufacturing such a module.
• the invention applies in particular to the technical field of additional electric heating devices.
• Such heaters are particularly used in the first minutes of starting a motor vehicle, when the engine is not hot enough to ensure the supply of hot air in the passenger compartment of the vehicle.
• This heating time is for example between 15 and 20 minutes for a Diesel type engine.
• Such an additional heating device generally comprises a support frame on which are mounted parallel heating modules arranged to be traversed by a flow of air to be heated.
• Each heating module comprises two electrodes between which are placed resistive elements of positive temperature coefficient type. Two opposite heat sinks are attached to the electrodes, so as to increase the exchange surface with the air flow to be heated.
• the heat sinks are for example formed of pleated or corrugated metal ribbons.
• Each heating module thus comprises a positive terminal electrically connected to the positive terminal of a battery, and a negative terminal electrically connected to the negative terminal of the battery via a power transistor, such as a transistor.
• a power transistor such as a transistor.
• MOSFET metal-oxide gate field effect
• each MOSFET is soldered to a printed circuit board of a control module, also called "Driver".
• the control module is mounted in a housing fixed to the support frame.
• Each MOSFET comprises a first terminal called drain and connected to the negative terminal of the corresponding heating module, a second terminal called a source and connected to the negative terminal or ground of the battery, and a third terminal called a gate used for the input of a control signal for controlling the opening and closing of the MOSFET.
• the various electrical connections may in particular be provided by conductive bars mechanically connected to each other by an electrically insulating lining fixed on the printed circuit board.
• the amount of heat dissipated is greater, for example of the order of 20 to 30 Watts.
• the invention aims in particular to provide a simple, effective and economical solution to this problem.
• a control module of an electrical apparatus comprising a printed circuit board, on which are mounted electrical and electronic components, and at least one electronic power component, characterized in that the electronic power component is separated from the printed circuit board and is maintained relative to the latter by means of at least one electrical connection member fixed on the printed circuit board and connected to one of the terminals of the electronic power component.
• the electronic power component being separated or remote from the printed circuit board, heat transmission by conduction to the other electronic components is avoided. This avoids any risk of degradation of these electronic components. Furthermore, the fact that the electronic power component is mechanically attached to the printed circuit board via the electrical connection member makes it possible to form a unitary assembly which can be easily handled and mounted inside the circuit board. a case for example.
• the electronic power component is a power transistor, for example a metal-oxide gate field effect transistor.
• Such a transistor is generally traversed by a large current, and thus generates heat which is a function in particular of its resistance in the on state.
• the invention makes it possible to use MOSFET transistors having a higher on-resistance Rdson resistance and therefore less expensive, and / or transistors traversed by very large currents.
• a first connecting member may be electrically connected to a first terminal of the electronic power component, a second connecting member being electrically connected to a second terminal of the electronic power component, the two connecting members being mechanically connected to each other. another via an electrically insulating liner, said liner being attached to the printed circuit board.
• the electronic power component may be mounted on a substrate extending substantially in the plane of the printed circuit board, the latter being separated from said substrate by a slot.
• said slot has a U shape and opens at its ends on a peripheral edge of the printed circuit board.
• Such a slot can be easily made by machining, particularly by milling.
• the invention also relates to a heating device, in particular for a motor vehicle, comprising a control module of the aforementioned type, at least one heating module comprising a first terminal electrically connected to a first terminal of a battery, a second terminal electrically connected. to the first terminal of the electronic power component, via the first electrical connection member, a second terminal of the battery being connected electrically to the second terminal of the electronic power component, via the second electrical connecting member.
• the first terminal of the heating module can be electrically connected to the first terminal of the battery via a third electrical connection member, the three connecting members being mechanically connected to one another via a electrically insulating gasket attached to the printed circuit board.
• the connecting members are for example conducting bars.
• the invention finally relates to a method for manufacturing a control module of the aforementioned type, comprising the steps of:
• the method according to the invention proposes to machine the circuit board so as to completely separate the portion supporting the electronic power component from the rest of the printed circuit board. This machining can be performed at the same time as machining the material bridge to separate the printed circuit board from the rest of the panel.
• the panel Before assembly of the electronic components, the panel may comprise slots delimiting the printed circuit board as well as the material bridge, and at least one slot partially surrounding the electronic power component to be isolated from the rest of the electronic card.
• the slot partially surrounding the electronic power component may be extended by machining so as to completely separate the portion supporting the electronic power component from the rest of the printed circuit board.
• the panel may comprise a plurality of separate printed circuit boards, each connected by at least one material bridge to the panel.
• FIG. 1 is a front view of a heating device according to the invention
• FIG. 2 is a perspective view, from the front, of a control module according to the invention belonging to the heating device of FIG. 1;
• FIG. 3 is a perspective view, from the rear, of a part of the control module of FIG. 2,
• FIG. 4 is a diagrammatic cross-sectional view of part of the control module of FIGS. 2 and 3,
• FIG. 5 is a view from above of the above-mentioned control module
• FIG. 6 is a view from above of a printed circuit board and substrates of the MOSFETs belonging to the control module according to the invention.
• FIG. 7 is a schematic view of the electric power wiring of the heating device
• FIG. 8 is a plan view of a panel used for producing printed circuit boards
• Figure 9 is a view of a portion of the panel of Figure 8.
• Figure 1 shows an additional electric heating device 1 according to the invention for fitting a motor vehicle. Such a heating device 1 is particularly used in the first minutes of use of the motor vehicle, when the engine is not hot enough to ensure the supply of hot air in the passenger compartment of the vehicle.
• This device 1 comprises a support frame 2 of parallelepiped shape on which are mounted heating modules 3 parallel and arranged to be traversed by a flow of air to be heated.
• the heating modules 3 are controlled by means of a control module 4 (FIGS. 2 and 5) or driver mounted in a housing 5 fixed to the support frame 2.
• Each heating module 3 comprises two electrodes or terminals referenced + and - in Figure 7, between which are placed resistive elements 6 ( Figure 7) type positive temperature coefficient (CTP).
• Two opposed heat sinks 8 are attached to the electrodes, so as to increase the exchange surface with the air flow to be heated.
• the heat sinks 8 are for example formed of pleated or corrugated metal ribbons.
• Each heating module 3 thus comprises a positive terminal electrically connected to the positive terminal of a battery 9, and a negative terminal electrically connected to the negative terminal of the battery 9 by means of a power transistor, such as a metal-oxide gate field effect transistor 10, also called a MOSFET.
• a power transistor such as a metal-oxide gate field effect transistor 10, also called a MOSFET.
• the control module 4 comprises a printed circuit board 1 1 on which are welded or mounted various electrical and electronic components 12 and comprising notches 13 of rectangular or square shape for housing substrates 14 on which the MOSFETs are soldered.
• Each substrate 14 has a shape corresponding to that of the indentations 13.
• the edge of each substrate 14 is spaced from the printed circuit board 1 1 by a distance d of between 1 and 2 mm.
• the slot 15 extending between the printed circuit board 1 1 and the edge of each substrate 14 is generally U-shaped and has two wings opening at the peripheral edge 16 of the printed circuit board.
• Each substrate 14 extends in the plane of the printed circuit board 1 1 and has a thickness substantially equal to the thickness of said printed circuit board 1 January. As best seen in FIG.
• each MOSFET 10 comprises a first terminal called drain D, forming the sole of the MOSFET, and which is connected to the negative terminal of the corresponding heating module 3, a second terminal called source S and connected to the negative terminal or ground of the battery 9, and a third terminal called gate G, serving for the input of a control signal for controlling the opening and closing of the MOSFET 10.
• Each substrate 14 comprises at least one track of conductive material, for example copper, for welding the sole of the MOSFET 10, that is to say the drain D, as well as terminations of a conductor bar 18a, 18b, 18c described below.
• conductive material for example copper
• Each MOSFET 10 furthermore comprises two tabs of small section, one of which is connected to the source S and the other of which is connected to the gate G.
• Said tabs S, G are soldered on the printed circuit board 11 (FIG. Figure 5). More particularly, the tab G connected to the gate makes it possible to receive the setpoint signal intended to control the opening or closing of the MOSFET 10 and the tab S is connected to the negative terminal of the battery 9, via a conductor bar 19 better described after.
• the electrical connections between the MOSFETs 10, the heating modules 3 and the battery 9 are provided by conducting bars.
• three conductor bars 18a, 18b, 18c respectively connect the negative terminal of each heating module 3 to the drain D of the corresponding MOSFET 10.
• Another conductive bar 19 connects all the sources S of the MOSFETS to the negative terminal or ground of the battery 9.
• a last conductive bar 20 connects the positive terminal of the battery 9 to the positive terminals of the various heating modules 3.
• the various conductor bars 18a, 18b, 18c, 19, 20 are mechanically connected to each other and electrically insulated from each other by a lining 21 overmolded of synthetic material and acting as a support so that said bars conductors 18a, 18b, 18c, 19, 20 and the liner 21 form a unitary assembly.
• the liner 21 is fixed at 22 on the printed circuit board (FIG. 3).
• the bars 19 and 20 are fixed, by some of their terminations, on the printed circuit board (see Figure 5).
• Each MOSFET 10 can be opened and closed cyclically, the temperature reached by each heating module 3 then being a function of the opening and closing times of the MOSFET 10.
• the separation of the substrate 1 and the printed circuit board 1 1 by the slot 15 makes it possible to avoid any heat conduction, in particular in the case where the MOSFETs 10 are damaged (generally in a state of short circuit between the drain D and the source S) or in the case where the MOSFETs 10 are closed, that is to say when they are in the on state.
• a control module 4 according to the invention is manufactured by executing the following method.
• This method uses a panel 23 (FIG. 8) comprising several separate printed circuit boards 11, for example 8 or 16, each printed circuit board 1 1 being connected to the rest of the panel 23 by material bridges 24.
• each card has U-shaped and / or L-shaped slots 15 surrounding areas 14 for accommodating MOSFETs.
• Each slot 15 has a base 25a parallel to the peripheral edge 16 adjacent to the printed circuit board, and one or two branches 25b perpendicular to the base 25a and parallel to each other. The branches 25b do not open at the peripheral edge 16 of the printed circuit board January 1.
• Electrical components 12 are then mounted on one and / or the other face of the printed circuit board 11, for example by welding or brazing. It may include SMD components, that is to say mounted on the surface. MOSFETs 10 are further mounted in the zones 14 delimited by the slots 15.
• the various material bridges 24 are then removed by milling, so as to detach each printed circuit board 1 1 from the rest of the panel 23.
• the branches 25b of the slots 15 are also extended by machining, for example by milling , so that said branches 25b open on the adjacent peripheral edge 16 of the printed circuit board 1 January.
• a control module 4 is thus obtained as described above, comprising a printed circuit board 11 and MOSFETs 10 mounted on substrates 14 separated from the circuit board. printed 1 1 and connected thereto by the conductor bars 18a, 18b, 18c, 19, 20 and the lining 21.
• Such a method is easy to implement and requires adaptations, compared to known techniques, which are easy to implement.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• Physics & Mathematics (AREA)
• Combustion & Propulsion (AREA)
• Chemical & Material Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Air-Conditioning For Vehicles (AREA)
• Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
• Structure Of Printed Boards (AREA)
• Combinations Of Printed Boards (AREA)
• Control Of Resistance Heating (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=48225082

Family Applications (1)

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Citations (2)

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• 2013
  • 2013-03-26 FR FR1352728A patent/FR3004058B1/fr not_active Expired - Fee Related
• 2014
  • 2014-03-20 EP EP14711281.7A patent/EP2979521A1/de not_active Withdrawn
  • 2014-03-20 US US14/778,632 patent/US10479169B2/en active Active
  • 2014-03-20 JP JP2016504589A patent/JP6208323B2/ja active Active
  • 2014-03-20 KR KR1020157026495A patent/KR101774130B1/ko active IP Right Grant
  • 2014-03-20 CN CN201480024055.4A patent/CN105210456B/zh active Active
  • 2014-03-20 WO PCT/EP2014/055654 patent/WO2014154567A1/fr active Application Filing

Patent Citations (2)

Non-Patent Citations (1)

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