EP4305926A1 - Module de commande, dispositif électrique et procédé de détection d'enlèvement d'un capot d'un module de commande correspondants - Google Patents
Module de commande, dispositif électrique et procédé de détection d'enlèvement d'un capot d'un module de commande correspondantsInfo
- Publication number
- EP4305926A1 EP4305926A1 EP22715548.8A EP22715548A EP4305926A1 EP 4305926 A1 EP4305926 A1 EP 4305926A1 EP 22715548 A EP22715548 A EP 22715548A EP 4305926 A1 EP4305926 A1 EP 4305926A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrical
- control module
- cover
- electronic
- electronic control
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0236—Industrial applications for vehicles
-
- 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
-
- 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
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/022—Heaters specially adapted for heating gaseous material
- H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system
Definitions
- the present invention is in the field of electrical devices for heating a fluid such as an electric heater, in particular in a motor vehicle ventilation, heating and/or air conditioning installation. It relates more particularly to a control module making it possible to control such an electrical device. The invention also relates to a method for detecting the removal of a metal cover closing a case of such a control module.
- heating devices such as electric radiators in such installations is known in particular for making additional radiators arranged across the air flow at the outlet of a main radiator through which a heat transfer fluid passes, in particular in vehicles with internal combustion engines, to generate a temporary additional supply of heat energy, in particular when the vehicle is started, to carry out rapid punctual heating of the air flow.
- Such electric heating devices such as electric radiators comprise a heating body provided with heating elements, for example arranged so as to be exposed directly to a flow of air passing through the electric heating device.
- the heating elements comprise, for example, stones or ceramics with a PTC effect, that is to say with a positive temperature coefficient. These are elements whose resistive value varies very greatly as a function of temperature. More precisely, the ohmic value of the PTC resistive elements increases very rapidly beyond a predetermined temperature threshold.
- the current supply to these resistive elements generates heating of the heating element, the heat being able to be diffused by radiant elements which increase the exchange surface with the air passing through these electric heaters.
- the heating devices generally comprise a control module capable of controlling the current flowing in the heating elements via in particular an electrical power supply circuit.
- the power supply circuit is mounted for example on an electronic control board, such as a printed circuit board known by the acronym PCB for Printed Circuit Board in English.
- an electrical heating device supplied with high voltage it may be a main heating device of the vehicle which may be very powerful, which encourages having electrical powers to be delivered very important, in particular of the order of 1kW to 8kW.
- the control module generally comprises a box receiving the control electronics and closed by a cover. However, if a person manages to remove the cover, while the control module is electrically powered, and in particular at high voltage, this opening of the control module endangers this person who is likely to suffer an electric shock.
- the object of the invention is therefore to provide protection in the event of opening of the cover of the control module.
- the subject of the invention is a control module for an electrical device, in particular thermal conditioning, for a motor vehicle, the control module being configured to be connected to an electrical power source and to control the power supply of said device using a control signal, the control module comprising a box closed by a metal cover and an electronic control card received in the box.
- control module comprises at least one electrically conductive element configured to establish an electrical connection between the cover and the electronic control card.
- the electronic control card comprises an electronic protection circuit configured to: measuring at least one electrical parameter of the control signal, at least one value of which is representative of the electrical connection between the cover and the electronic control card via said at least one electrically conductive element, detecting as a function of said at least one electrical parameter measured, an interruption of the electrical connection between the cover and the electronic control card, and generating a power supply interruption signal in the event of detection of the interruption of the electrical connection between the cover and the electronic control card ordered.
- Such a control module provides an additional function of protection against possible electric shocks, if a person tries to remove the cover to open the control module. Indeed, as soon as the electrically conductive element no longer ensures electrical contact between the cover and the electronic control card, this is interpreted as an opening of the box and the power supply interruption signal is immediately generated to disconnect this power supply.
- control module may also comprise one or more of the following characteristics described below, taken separately or in combination.
- Said at least one electrical parameter can be an intensity, or a parameter depending on the intensity.
- Said at least one electrical parameter may be a voltage, or even a voltage-dependent parameter.
- the electronic protection circuit is configured to: compare said at least one measured electrical parameter with a first predetermined reference value representative of the electrical connection between the cover and the electronic control card by via said at least one electrically conductive element, if said at least one measured electrical parameter is different from the first predetermined reference value, comparing said at least one parameter electrical measured with a second predetermined reference value representative of an interruption of the electrical connection between the cover and the electronic control card, and if said at least one measured electrical parameter corresponds to the second predetermined reference value, generating the signal d interruption of the power supply.
- the electronic protection circuit is configured to: compare the measured voltage with a first predetermined reference value representative of the electrical connection between the cover and the electronic control card by via said at least one electrically conductive element, if the measured voltage is different from the first predetermined reference value, comparing the measured voltage with a second predetermined reference value representative of an interruption of the electrical connection between the cover and the electronic control board, and if the measured voltage corresponds to the second predetermined reference value, generating the power supply interruption signal.
- the control module may comprise at least one electronic control unit.
- the electronic control unit is for example configured to generate the control signal.
- the control module may include at least one electrical connector.
- the electrical connector and the electronic control unit can be mounted on the electronic protection circuit.
- the electrical connector can be configured to receive the control signal generated by the electronic control unit.
- the electrical connector is for example configured to be connected to the electrical power source.
- the electrical connector or at least less an electrical connector, is a high voltage connector configured for use for a supply voltage greater than 60V.
- the electronic protection circuit comprises a voltage divider bridge between the electronic control unit and the high voltage connector.
- said at least one electrical parameter may be the output voltage of the voltage divider bridge
- the voltage divider bridge may comprise at least a first resistor connected on the one hand to a terminal of the electronic control unit and on the other hand to a terminal of the high voltage connector, and a second resistor arranged in series with the first resistor, and connected on the one hand to a terminal of the high voltage connector and on the other hand to ground and to the electrically conductive element.
- the second predetermined reference value can be a maximum voltage.
- the second predetermined reference value is for example a voltage of 5V.
- the first predetermined reference value can be the maximum voltage divided at least by two.
- the first predetermined reference value is for example a voltage of 2.5V.
- the electronic protection circuit can be configured to detect, depending on said at least one electrical parameter, an electrical disconnection between the high voltage connector and the control module, and to generate the interruption signal of the power supply if an electrical disconnection is detected between the high voltage connector and the control module.
- the high voltage connector may comprise two first conductors with positive and negative poles configured to be connected to the electrical power source.
- the high voltage connector may include two second conductors connected to the electronic protection circuit.
- the electronic protection circuit is for example configured to detect, depending on said at least one electrical parameter, an electrical disconnection between the second conductors of the high voltage connector and the electronic control board, and to generate the interruption signal of the power supply in the event of detection of electrical disconnection between the second conductors and the control module.
- the electronic protection circuit is for example configured to compare said at least one measured parameter, such as the measured voltage with a third predetermined reference value, if said at least one measured parameter, such as the measured voltage, differs from the first predetermined reference value.
- the third predetermined reference value is representative of the electrical disconnection between the high voltage connector and the control module.
- the electronic protection circuit is configured to generate a power supply interruption signal if said at least one electrical parameter, such as the voltage, measured corresponds to the third predetermined reference value.
- the third predetermined reference value can be a minimum voltage, for example a zero voltage.
- Said at least one electrically conductive element is for example a metallic element. It can be chosen from a fixing element, a screw, a pin, a tongue, a lamella.
- the cover and/or the electrically conductive element can be made of aluminum or aluminum alloy.
- the cover may comprise the electrically conductive element which can establish electrical contact with the electronic control card, when the cover is assembled on the housing body.
- the electrically conductive element may be integral with the cover.
- the electrically conductive element can be fixed to the cover, for example by welding, gluing or screwing.
- said at least one electrically conductive element is arranged bearing against the electronic control card.
- said at least one electrically conductive element passes through the electronic control board.
- the invention also relates to an electric device for heating a fluid, in particular for a motor vehicle, said device comprising at least one heating element and a control module as defined above, the control module being connected electrically to said at least one heating element and configured to be connected to an electrical power source and to control the electrical power supply of said at least one heating element using a control signal.
- the electrical device can be provided for heating an air flow.
- the invention also relates to a heating and/or ventilation and/or air conditioning installation for a motor vehicle comprising at least one such electric heating device.
- the invention also relates to a method for detecting the removal of a metal cover closing a housing of a control module as defined above, the housing receiving an electronic control card, and the control module being configured to be connected to an electrical power source and to control the electrical power supply of an electrical device, in particular thermal conditioning for a motor vehicle using a control signal, the control module comprising at least an electrical conductor element configured to establish an electrical connection between the cover and the electronic control card.
- Said method comprises the following steps: measuring at least one electrical parameter of the control signal, detecting, as a function of said at least one measured electrical parameter, an interruption of the electrical connection between the cover and the electronic control card via said at least one electrically conductive element, and generating a power supply interruption signal in the event of detection of the interruption of the electrical connection between the cover and the electronic control card.
- Said method may include a step for transmitting bonnet removal information to a central management unit, for example in the motor vehicle.
- FIG. 1 is a perspective view of an example of an electric device for heating an air flow comprising a control module closed by a cover.
- FIG. 2 is a perspective view of an example of an electrical device for heating a heat transfer liquid comprising a control module closed by a cover.
- FIG. 3 is a view of the electrical air heater of Figure 1 with the control module cover removed.
- FIG. 4 is an enlarged view showing part of the cover of the control module comprising a screw for electrical conduction between the cover and an electronic control card of the control module.
- FIG. 5 is a sectional view showing the screw arranged to establish electrical conduction between the cover and the electronic control board of the control module.
- FIG. 6 is a sectional view showing a tab integral with the cover arranged to establish electrical conduction between the cover and the electronic control card of the control module.
- FIG. 7 is a bottom view of a part of the cover showing the tab of figure 6.
- FIG. 8 is a block diagram of an electronic protection circuit for detecting an electrical disconnection between the cover and the electronic control board.
- FIGS 1 and 2 show an electrical device for the thermal conditioning of a fluid, such as an electrical device 1, 1' for heating a fluid, in particular for a heating and/or ventilation and/or installation. or motor vehicle air conditioning.
- a high-voltage device is defined here as a device intended to be powered by a direct or alternating current having an electrical voltage greater than 60V, in particular between 60V and 1000V, for example of the order of 400V or 800V.
- FIG. 1 This is in particular an electrical device 1 for heating an air flow, as shown in Figure 1.
- the installation generally comprises at least one air flow circulation duct at inside which the electric heating device 1 can be arranged so as to be traversed by the flow of air to be heated.
- the invention can be applied to another fluid.
- it could be, as shown in FIG. 2, an electric device 1′ for heating a heat transfer liquid, such as water circulating in a heating circuit for heating a motor vehicle passenger compartment. .
- the electrical device 1 for example for heating an air flow as illustrated in FIG. 1, is capable of transforming electrical energy taken for example from the vehicle into thermal energy returned to the air flow. passing through the heating device 1.
- the electric heating device 1 comprises a heating body 3 comprising one or more heating elements 31.
- the heating body 3 is intended to be supplied with electric current to heat the fluid, for example the flow of air, passing through the heating body 3.
- the heating body 3 may have a general parallelepipedal configuration. It is intended in particular to be positioned transversely to the flow of air to be heated.
- the heating elements 31 of the heating body 3 can be made in the form of heating rods receiving, for example, resistive elements, such as thermistors, for example of the PTC effect type (for positive temperature coefficient). Other alternatives can be considered.
- the heating rods 31 are powered current, for example at a voltage of the order of 400V in the case of a high voltage electric heating device 1.
- a device G for heating a heat transfer liquid of FIG. 2 may comprise a box 3′ receiving one or more heating elements such as resistive elements.
- the device G for heating the heat transfer liquid further comprises at least two pipes 4 for the inlet and the outlet of the heat transfer liquid to be heated. Such pipes are for example arranged projecting on one side or opposite sides of the device 1′.
- the electric heating device 1 or 1' further comprises a control module 5 for the heating body 3.
- This control module 5 is intended to be electrically connected to an electrical power source (not shown).
- the electrical power source is for example a 400V or 800V power battery.
- control module 5 is intended to be connected electrically, and generally also mechanically, to the heating body 3 or box 3' containing the heating elements 31.
- the control module 5 can be fixed on the body heater 3 or the box 3'. This control module 5 makes it possible, after electrical connection to the electrical power source and to the heating elements 31, to control the power supply to the heating elements 31, using at least one control signal.
- the control module 5 is described in more detail below.
- the control module 5 comprises a box 7, also called a control box.
- the housing 7 comprises a housing body 71 closed by a cover 73.
- the cover 73 is for example glued to the housing body 71.
- the cover 73 can also be screwed to the housing body 71.
- the cover 73 can have a substantially planar general shape.
- control box 7 can come to cover the box 3 'containing the heating elements by being secured thereto in a watertight manner.
- the control module 5 includes an electronic control card 9, visible in Figure 3. It can be arranged inside the housing 7 control. Such a card is intended to be electrically connected to the power supply source.
- the electronic control card 9 is in particular configured to control the power supply of the heating body 3, and more precisely to control the heating elements 31.
- the electronic control card 9 is able to carry a plurality electronic components or modules configured to receive information, process it and generate a control signal for controlling the heating elements 31.
- the control signal can be periodic, for example with pulse width modulation, known by the acronym PWM or PWM for English “Pulse Width Modulation”.
- the control module 5 may further comprise one or more electrical connectors 11, 13.
- control module 5 comprises an electrical connector 11 allowing the electrical connection of the electronic control card 9 to the electrical power source.
- the electrical connector 11 comprises for this purpose at least two positive pole and negative pole conductors configured to be connected to the electrical power source (not shown).
- high voltage connector 11 In the case of a high voltage electrical device, it is in particular an electrical connector 11 called high voltage connector, that is to say that it is configured to be used for a voltage of power supply greater than 60V.
- the electrical connector 11 can be carried, fixed on the control module 5.
- the electrical connection between such a connector 11 and the electronic control card 9 can be made in known manner by any appropriate method.
- the control module 5 may include another electrical connector 13, in particular a low voltage connector 13, i.e. it is configured to be used for a supply voltage below 60V, generally 12V . This is for example a signal connector.
- the control module 5 further comprises at least one electrically conductive element 15, 17 (FIGS. 2 to 7) configured to establish an electrical connection between the cover 73 and the electronic control card 9.
- it is a metallic element, for example made of aluminum or aluminum alloy.
- This electrically conductive element 15, 17 is grounded.
- the electrically conductive element 15, 17 makes it possible to connect the electronic control card 9 to the cover 73 by a ground connection.
- the electrically conductive element can be integral with the cover 73 and be intended to establish electrical contact with the electronic control card 9, when the cover 73 is assembled on the housing body 71 receiving the electronic card. control 9, after electrical connection to the power source.
- the electrically conductive element can for example be made in one piece with the cover 73.
- the electrically conductive element can be fixed to the cover, for example by welding or screwing.
- the electrically conductive element 15, 17 may be intended to pass through the electronic control card 9 or, on the contrary, to bear against it when assembling the control box 7.
- the electrical conductor element 15, 17 can be arranged on the low voltage side of the electronic control card 9, that is to say on the side carrying the so-called low voltage connector 13.
- a fixing element a screw, a pin, a tongue, a lamella. Examples of embodiments are detailed below.
- FIG. 2 to 5 A first embodiment for such an electrically conductive element is shown in Figures 2 to 5.
- a fixing element such as a screw 15 performs this function of electrically conductive element between the cover 73 and the electronic control card 9. It may be a dedicated screw 15 for the disconnection detection function of the cover 73 which comes in addition to the first screws which may be provided to consolidate the assembly of the control box 7 , after gluing for example of the cover 73 on the housing body 71.
- This screw 15 forming an electrically conductive element, is assembled to the cover 73 and passes through the electronic control card 9 when the cover 73 is assembled to the housing body 71.
- the electronic control card 9 has a first face 91 and a second face 93 opposite.
- the first face 91 is arranged opposite the cover 73 in the assembled state of the box 7 control.
- the screw 15 forming electrically conductive element crosses the first face 91 and the second face 93 of the electronic control card 9.
- the electrically conductive element is made in the form of a tab 17 or strip. It can be integral with the cover 73.
- the tongue 17 or lamella can be glued or welded to the cover 73. Alternatively, it can be integral with the cover 73.
- the tab 17 extends from the face of the cover 73 intended to face the electronic control card 9 in the assembled state of the control box 7. This tab 17 extends in the direction of the inside of the box 7, of the electronic control card 9, when the cover 73 is assembled to the box body 71.
- Such a tab 17, forming an electrically conductive element, is intended to bear against the electronic control card 9 when the cover 73 is assembled to the housing body 71 receiving the electronic control card 9. Unlike the first example of realization, the tongue 17 does not pass through the electronic control card 9.
- the tongue 17 has a generally wavy shape with a flat portion at the free end bearing against the electronic control card 9 in the assembled state of the control box 7.
- Yet another alternative, not shown, for the production of an electrically conductive element can be a pin extending from the face of the cover 73 intended to be opposite the electronic card of control 9 and intended to bear against the electronic control card 9 when the cover 73 is assembled to the housing body 71 receiving the electronic control card 9.
- the electronic control card 9 includes an electronic protection circuit 19.
- this electronic protection circuit 19 is configured to detect an electrical disconnection between the cover 73 and the electronic control card 9. This disconnection can occur if the cover 73 is removed, for example by removing the screw 15. As a variant, if the cover 73 is removed, the tab 17 or strip or pin is no longer in contact with the electronic control card 9. [0100]
- the protection function is advantageously implemented when the electronic control card 9 receives a supply current from the supply source (not shown) such as the power battery for example, to which the control module 5 is electrically connected, and the cover 73 is no longer electrically connected to the electronic control board 9.
- the electronic protection circuit 19 is then configured to generate a signal to interrupt the power supply, for example by cutting off the power battery which supplies the control module 5, when the cover 73 is disconnected from the electronic circuit board. command 9.
- the electronic protection circuit 19 is configured to measure at least one electrical parameter of the control signal.
- the electrically conductive element such as a screw 15 or other fastening element, or a tab 17, or strip or pin, as previously described.
- the electrical parameter measured can be a current, a voltage, or even a parameter depending on the current, or a parameter depending on the voltage.
- the electronic protection circuit 19 is configured to measure at least one voltage of the control signal.
- the electronic protection circuit 19 is also configured to detect from this measurement of the electrical parameter, for example from the measured voltage, any electrical disconnection between the cover 73 and the electronic control card 9. More Specifically, the electronic protection circuit 19 is configured to detect an interruption of the electrical connection between the cover 73 and the electronic control card 9 via the electrical conductive element 15, 17.
- the electronic protection circuit 19 can in particular be configured to compare the measured voltage with a first predetermined reference value representative of the electrical connection between the metal cover 73 and the electronic control card 9 via of the electrically conductive element 15,
- the electronic protection circuit 19 can also be configured to compare the measured voltage with a second representative predetermined reference value an interruption of the electrical connection between the cover 73 and the electronic control card 9 via the electrical conductor element 15, 17.
- the electronic protection circuit 19 can generate a power supply interruption signal when an electrical disconnection, or interruption of the electrical connection between the cover 73 and the electronic control card 9 via of the electrically conductive element 15, 17, is effectively detected, for example if the measured voltage corresponds to the second predetermined reference value.
- the electronic protection circuit 19 comprises a set of interconnected electronic components, for example using a printed circuit on the electronic control card 9.
- the electronic control card 9 can carry an electronic control unit 21 configured to generate the control signal.
- the electrical connector 11 such as a high voltage connector, is configured to receive the control signal generated by this electronic control unit 21.
- the electrical connector 11 and the electronic control unit 21 can be mounted on the electronic protection circuit 19 by being electrically interconnected, for example using a printed circuit.
- the electronic control unit 21 may comprise at least one means for acquiring, measuring the electrical parameter, such as a voltage, of the control signal to be monitored.
- the electronic control unit 21 may comprise at least one means for comparing this electrical parameter with at least one predetermined reference value, to deduce therefrom a disconnection of the cover 73, and to generate the electrical power supply interruption signal.
- the electronic protection circuit 19 comprises a voltage divider bridge between the electronic control unit 21 and the electrical connector 11.
- the monitored electrical parameter is the output voltage of the voltage divider bridge.
- the electronic control unit 21 makes it possible to acquire, or measure the output voltage of the voltage divider bridge.
- the voltage divider bridge comprises at least a first resistor R1 and a second resistor R2 arranged in series.
- the first resistor RI is connected on the one hand to a terminal of the electronic control unit 21 and on the other hand to a terminal of the electrical connector 11 called the high voltage connector.
- the second resistor R2 is connected on the one hand to a terminal of the high voltage connector 11 and on the other hand to ground and to the electrically conductive element, such as the screw 15, or the tongue 17 previously described.
- the resistors RI, R2 of the divider bridge can be of the same value, for example of the order of 10k ⁇ .
- the electronic protection circuit 19 can also be configured to detect an electrical disconnection between the high voltage connector 11 and the control module 5 according to the electrical parameter measured, such as the voltage. This can also be done via the divider bridge.
- the high voltage connector 11 may comprise for this purpose a pair of conductors making it possible to carry out at least in part this electrical disconnection detection function.
- the high voltage connector 11 comprises a first pair of conductors, called first conductors, one with a positive pole HV+ and the other with a negative pole HV-, configured to be connected to the electrical power source (not shown). And, it comprises a second pair of conductors 23 of positive pole and negative pole, connected to the electronic protection circuit 19, to perform this function of detecting electrical disconnection between the high voltage connector 11 and the control module 5. It is these are, for example, electrical connection cables.
- the electronic protection circuit 19 is then configured to detect, depending on the electrical parameter measured, such as the voltage, an electrical disconnection between the second conductors 23 of the high voltage connector 11 and the electronic control card 9.
- the electronic protection circuit 19 can in particular compare the measured voltage with a third predetermined reference value, representative of the electrical disconnection between the high voltage connector 11 and the control module 5.
- the electronic control unit 21 may comprise at least one means for comparing the electrical parameter with at least one predetermined reference value and for deducing therefrom a disconnection of the high voltage connector 11.
- the electronic protection circuit 19, in particular the electronic control unit 21, can also generate a power supply interruption signal, in the event of detection of electrical disconnection between the high voltage connector 11 and the control module 5, and more precisely between the second conductors 23 and the electronic control card 9. This is the case for example if the measured voltage corresponds to the third predetermined reference value.
- the electronic protection circuit 19, in particular the electronic control unit 21, can transmit a warning signal to a central management unit 25, for example of the motor vehicle. This transmission can be done for example by a network or LIN bus.
- At least one electrical parameter of the control signal is measured, such as the intensity, the voltage, or any other parameter depending on the intensity or the voltage, of which at least one value is representative of the electrical connection between the cover 73 and the electronic control card 9 via the electrical conductor element 15, 17.
- This measurement step can be implemented by the electronic control unit 21 previously described.
- the method may include a step for detecting an interruption in the electrical connection between the cover 73 and the electronic control card 9.
- One or more steps for the detection of the interruption of the connection can be implemented by the electronic control unit 21 previously described.
- the method can include a step for comparing the measured electrical parameter, for example the measured voltage, with a first predetermined reference value representative of the electrical connection between the cover 73 and the electronic control card 9 by the intermediary of the electrically conductive element 15, 17.
- the first predetermined reference value is a first voltage of the order of 2.5V.
- the cover 73 is properly connected to the electronic control card 9, and the process stops and is repeated from the start.
- this may reveal an electrical disconnection of the cover 73.
- the electrical parameter such as the measured voltage
- a second predetermined reference value representing an interruption of the electrical connection between the cover 73 and the electronic control card 9.
- the second predetermined reference value for example a voltage of 5V
- the first predetermined reference value can be the maximum voltage divided at least by two, for example 2.5V.
- the method comprises a step for generating a power supply interruption signal.
- the method advantageously comprises at least one step for transmitting information on the electrical disconnection of the cover 73, and therefore on the removal of the cover 73, to the central management unit 25, for example in the motor vehicle.
- This transmission of information can be implemented by the electronic control unit 21 previously described.
- the method may comprise one or more steps for detecting, depending on the measured electrical parameter, for example the measured voltage, an electrical disconnection between the high voltage connector 11 and the control module 5, more precisely between the second conductors of the high voltage connector 11 and the electronic control board 9.
- the steps for detecting the disconnection of the high voltage connector 11 can be implemented at least in part by the electronic control unit 21 previously described.
- the method can include a step for comparing the measured voltage with a third predetermined reference value, in particular if the measured voltage is different from the first predetermined reference value.
- the third predetermined reference value can be a minimum voltage, and more precisely a zero voltage.
- the method may include a step to generate the power supply interruption signal in the event of detection of electrical disconnection between the high voltage connector 11 and the control module 5.
- the power supply is interrupted, for example the power battery used for the power supply is stopped.
- the interruption of electrical conduction between the cover 73 and the electronic control card 9 reflects an opening of the control box 7, and therefore the cover 73 is removed.
- the electronic protection circuit 19 detects that the high voltage connector 11 is no longer electrically connected to the electronic control card 9, the power supply is also interrupted.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2102194A FR3120332B1 (fr) | 2021-03-08 | 2021-03-08 | Module de commande, dispositif électrique et procédé de détection d’enlèvement d’un capot d’un module de commande correspondants |
| PCT/EP2022/055515 WO2022189276A1 (fr) | 2021-03-08 | 2022-03-04 | Module de commande, dispositif électrique et procédé de détection d'enlèvement d'un capot d'un module de commande correspondants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4305926A1 true EP4305926A1 (fr) | 2024-01-17 |
| EP4305926B1 EP4305926B1 (fr) | 2025-04-02 |
Family
ID=75539577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22715548.8A Active EP4305926B1 (fr) | 2021-03-08 | 2022-03-04 | Module de commande, dispositif électrique et procédé de détection d'enlèvement d'un capot d'un module de commande correspondants |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4305926B1 (fr) |
| FR (1) | FR3120332B1 (fr) |
| WO (1) | WO2022189276A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3149144A1 (fr) * | 2023-05-26 | 2024-11-29 | Valeo Systemes Thermiques | Dispositif de chauffage électrique relié à la masse par un élément de connexion d’un dispositif électronique de commande. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090063572A (ko) * | 2007-12-14 | 2009-06-18 | 현대자동차주식회사 | 에어백 콘트롤 유닛용 그라운드 결합 구조 |
| JP5827535B2 (ja) * | 2011-10-12 | 2015-12-02 | サンデンホールディングス株式会社 | 車載暖房用ヒータの制御装置 |
| KR101311154B1 (ko) * | 2011-11-14 | 2013-09-23 | 동아하이테크 주식회사 | 히터용 제어기 |
| CA2960258A1 (fr) * | 2017-03-09 | 2018-09-09 | 3278470 Nova Scotia Limited | Chauffe-eau a electrode instantanne |
-
2021
- 2021-03-08 FR FR2102194A patent/FR3120332B1/fr active Active
-
2022
- 2022-03-04 WO PCT/EP2022/055515 patent/WO2022189276A1/fr not_active Ceased
- 2022-03-04 EP EP22715548.8A patent/EP4305926B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP4305926B1 (fr) | 2025-04-02 |
| WO2022189276A1 (fr) | 2022-09-15 |
| FR3120332A1 (fr) | 2022-09-09 |
| FR3120332B1 (fr) | 2023-03-03 |
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