FR3138885A1 - INTERFACE DEVICE BETWEEN CHARGING CONNECTORS OF A SYSTEM AND EXTERNAL ELECTRICAL EQUIPMENT, WITH SECURE POWER SUPPLY - Google Patents

Abstract

An interface device (DIF) has a type defined by a first voltage, includes an internal device (DI1) providing an internal function when receiving a second voltage, and is coupled to electrical equipment requiring a supply current and to a charging connector (CNR) of a system (S), connected to a control line (LC), a detection circuit (CD) detecting the first voltage and supplying the second voltage in the presence of the first voltage and a power line (LA) supplying the supply current. This interface device (DIF) also includes a control module (MC) capable, when it receives the second voltage and in the absence of signaling of a fault by an internal device (DI1), to trigger a predefined variation of the first voltage and/or the presence of a third predefined voltage on the control line (LC), this predefined variation and/or this third predefined voltage triggering the supply of the supply current. Figure 2

Description

INTERFACE DEVICE BETWEEN CHARGING CONNECTORS OF A SYSTEM AND EXTERNAL ELECTRICAL EQUIPMENT, WITH SECURE POWER SUPPLY Technical field of the invention

Interface devices can be coupled to system charging connectors and external electrical equipment requiring power current to operate.

State of the art

Certain systems, such as for example certain vehicles (possibly of the automobile type), include a battery which is rechargeable under the control of an on-board charger, and a charging connector which is coupled to these battery and charger and to which can be temporarily coupled a external connector connected to an external power source during a recharge phase of this battery.

As those skilled in the art know, it has recently been proposed to use this type of system as a source of electrical power for at least one external electrical equipment, such as for example an electric bicycle, a trailer, a caravan, a barbecue or a lighting device. For this purpose, an interface device is connected to the charging connector of the system to which the external electrical equipment is coupled (and possibly forming part of the latter), and the system supplies this external electrical equipment, via the charging connector and the interface device, a power supply which comes from its rechargeable battery.

If it is desired that the power supply current supplied by the system corresponds to what the external electrical equipment needs, the interface device can have a predefined type, represented by a first voltage which is detectable, and representative of this supply current. The system can then comprise, firstly, a control line suitable for exchanging power supply information (at least with external electrical equipment), secondly, a detection circuit suitable for detecting the first voltage (and therefore the type of the interface device) and to supply the second voltage in the event of detection of the first voltage, and, on the third hand, a power supply line capable of supplying the supply current. Note that these detection circuit, control line and power line are all three connected to associated terminals of the charging connector.

Some systems include a charging calculator which is capable of exchanging charging information with external electrical equipment temporarily coupled to their charging connector via the interface device, and arranged to trigger supply via the power line of the supply current for this external electrical equipment as soon as the type of the interface device is detected by the detection circuit. However, it may happen that the interface device is subject to a malfunction that is potentially dangerous for a user, both of the system and of the external electrical equipment that must be powered by the latter. This is particularly the case, although not exclusively, when the malfunction induces an insulation fault which could, for example, lead to electrocution.

There is therefore currently no known solution making it possible, in the event of a malfunction of the interface device, to prevent the power line from supplying supply current for the external electrical equipment when the type of this device interface has been detected by the system detection circuit.

The invention therefore aims in particular to improve the situation.

Presentation of the invention

It proposes in particular for this purpose an interface device having a type defined by a first voltage, comprising at least one internal device ensuring at least one internal function when it receives a second voltage, and capable of being coupled to at least one piece of equipment external electrical requiring a supply current to operate and to a charging connector fitted to a system and connected to a control line capable of exchanging power information, a detection circuit capable of detecting the first voltage and providing the second voltage in the event of detection of the first voltage and a power supply line capable of supplying the supply current and equipping all three of the system.

This interface device is characterized by the fact that it also includes a specific control module, when it receives the second voltage and in the absence of signaling of a fault by an internal device, to trigger a predefined variation of the first voltage and/or the presence of a third predefined voltage on the control line, this predefined variation and/or this third predefined voltage being capable of triggering in the system the supply of the supply current for the ( each) external electrical equipment.

Thanks to the invention, it is now possible to prevent the power line of the system from providing supply current for external electrical equipment when the type of the interface device has been detected by the detection circuit, then a A malfunction of the interface device has been reported, thus allowing a user of the system or this external electrical equipment to avoid the risk of being put in danger.

The interface device according to the invention may include other characteristics which can be taken separately or in combination, and in particular:

- it can comprise, on the one hand, a first resistive component having a first resistance and capable of being coupled in parallel to the detection circuit, on the second hand, a second resistive component having a second resistance and having two proper terminals to be coupled respectively to the control line and to the detection circuit, and, on the third hand, a first control member specific, when placed in a first state predefined by a user, to allow the coupling of the second resistive component to the control line and to the detection circuit to participate in the definition of the first voltage and/or the third voltage;

- in a first embodiment, its control module can comprise, on the one hand, a third resistive component having a third resistance and capable of being coupled to the control line to participate in the definition of the third voltage, and, on the other hand, a first control element coupled to each internal device and capable, when it receives the second voltage and a fault signal from an internal device, of preventing this coupling of the third resistive component to the control line;

- in this first embodiment, the third resistive component can be adapted to be coupled in series to the second resistive component;

- in a second embodiment, its control module can comprise, on the one hand, a switching member having a first terminal suitable for being coupled to the detection circuit, a second terminal suitable for being coupled to the control line and a third terminal, the second terminal being able to be coupled to the first or third terminal depending on whether the switching member receives a first or second command, and, on the other hand, an information device coupled to the third terminal and suitable for be coupled to the detection circuit to receive the second voltage, and arranged, when it receives the second voltage and in the absence of signaling of a fault by an internal device, to generate the second command and supply the third voltage to the line of control;

- in this second embodiment, the first terminal can be coupled to the second resistive component;

- in the presence of the last sub-option, the information device can be arranged, when it receives the second voltage and a fault signal by an internal device, to generate the first command so that the second resistive component is coupled to the control line and causes the presence on the latter of a fourth voltage different from the third voltage and capable of preventing the supply of the supply current by the supply line;

- alternatively, in the second embodiment, the information device can be arranged, when it receives the second voltage and a fault signal by an internal device, to generate the second command and provide the control line with a fifth voltage different from the third voltage and capable of preventing the supply of the supply current by the supply line.

The invention also proposes (external) electrical equipment requiring a supply current to operate and comprising an interface device of the type presented above.

The invention also proposes a system comprising:

- a control line suitable for exchanging power information,

- a detection circuit capable of detecting a first voltage defining a type and of supplying a second voltage in the event of detection of the first voltage,

- a power supply line capable of supplying a supply current,

- a charging connector connected to the detection circuit, control line and power line, and

- a charging calculator capable of exchanging power supply information with at least one external electrical equipment requiring the supply current to operate and temporarily coupled to the charging connector.

This system is characterized by the fact that in the event of coupling of its charging connector to an interface device of the type presented above and coupled to (each) external electrical equipment:

- its detection circuit is capable of detecting a predefined variation of the first voltage and of reporting this detected predefined variation to the charging computer and/or its control line is capable of detecting a third predefined voltage and of signaling this detected third predefined voltage to the recharge calculator, and

- its recharge calculator is arranged so as to trigger the supply of the second voltage by the control line in the event of detection of the first voltage, and to trigger the supply by the supply line of the supply current for the ( each) external electrical equipment in the event of detection of the predefined variation and/or the third predefined voltage.

For example, this system can constitute a vehicle comprising a powertrain (or GMP) comprising at least one electric driving machine capable of being supplied with electrical energy by a rechargeable battery via the charging connector.

Also for example, this system can constitute an automobile type vehicle.

Brief description of the figures

Other characteristics and advantages of the invention will appear on examination of the detailed description below, and the appended drawings, in which:

schematically and functionally illustrates an exemplary embodiment of a vehicle comprising a GMP, with an electric motor powered by a rechargeable main battery and coupled to a charging connector to which is temporarily coupled an interface device according to the invention,

schematically and functionally illustrates a first embodiment of an interface device according to the invention, forming part of an electrical power cable of external electrical equipment and temporarily connected to the charging connector of the vehicle of the , And

schematically and functionally illustrates a second embodiment of an interface device according to the invention, forming part of an electrical power cable of external electrical equipment and temporarily connected to the charging connector of a vehicle of the type of that of the .

Detailed description of the invention

The invention aims in particular to propose a DIF interface device intended to be coupled to at least one external electrical equipment EE requiring a supply current to operate and to a CNR charging connector equipping a system S also comprising a battery BR, rechargeable via this CNR charging connector, and able to provide this supply current.

In what follows, we consider, by way of non-limiting example, that the system S is a motor vehicle. This is for example a car, as illustrated in the . But the invention is not limited to this type of system. It concerns in fact any type of system comprising a charging connector making it possible to recharge a rechargeable battery when an interface device or an external connector, coupled to an external power source, is connected to it. Consequently, the system can be a vehicle (land, sea (or river), or air), an electrical appliance (including household or consumer appliances), an installation (including industrial type), or a building.

Furthermore, we consider in what follows, by way of non-limiting example, that the system S (here a vehicle) comprises a powertrain (or GMP) of all-electric type (and therefore whose traction is ensured exclusively by at least least one electric driving machine MME). But the GMP could be of hybrid type (thermal and electric).

Furthermore, we consider in what follows, by way of non-limiting example, that the rechargeable battery BR of the system S, coupled to the charging connector CNR, is responsible for powering the electric motive machine MME of the GMP, a battery of BS easement and an RB on-board network. This is therefore a main (or traction) battery. But the BR battery could provide electrical energy for only part of the aforementioned equipment and/or at least one other piece of equipment in its system S.

We have schematically represented on the a system S (here a vehicle) comprising an electric GMP transmission chain (and therefore an MME electric driving machine), an on-board network RB, a service battery BS, a main (or traction) battery BR, a converter CV, and a CNR charging connector to which a DIF interface device according to the invention is temporarily connected.

It will be noted that in the example illustrated non-limitingly on the the interface device DIF is part of an electrical power cable C2 which itself is part of external electrical equipment EE requiring a supply current cal to operate. But this is not obligatory. Indeed, a DIF interface device, according to the invention, can be equipment in itself (or adapter) intended to be coupled to a CNR charging connector of a system S and to at least one external electrical equipment EE ( for example to a connector of a power cable of the latter (EE)).

For example, external electrical equipment EE may be an electric bicycle. But it can be any electrical device or equipment external to the S system, and in particular a trailer, a caravan, a mobile home, a barbecue, or a device lighting.

The RB on-board network is an electrical supply network to which electrical (or electronic) equipment (or components) are coupled which consume electrical energy.

The utility battery BS is responsible for supplying electrical energy to the on-board network RB, in addition to that supplied by the CV converter powered by the main battery BR, and sometimes in place of this CV converter. For example, this BS utility battery can be arranged in the form of a very low voltage type battery (typically 12 V, 24 V or 48 V). It is rechargeable at least via the CV (current) converter. We consider in the following, by way of non-limiting example, that the BS utility battery is of the 12 V Lithium-ion type.

The electric driving machine MME is an electric machine arranged so as to provide torque to move the system S (here a vehicle) when it is supplied with electrical energy by the main battery BR, as well as possibly to recover torque (by example in a regenerative braking phase).

The CV converter is also responsible during the driving phases of the system S (here a vehicle) of converting part of the electric current stored in the main battery BR to supply converted electric current to the on-board network RB and the utility battery BS ( to recharge it).

Note, as illustrated non-limitatively in the , that the CV converter can be part of a CH charger also comprising an AC recharge calculator responsible, in particular, for controlling the recharges of the main battery BR. This AC charging calculator is particularly suitable for exchanging charging information with the (each) external electrical equipment EE temporarily coupled to the CNR charging connector via the DIF interface device.

The main (or traction) battery BR can, for example, include electrical energy storage cells, possibly electrochemical (for example of the lithium-ion (or Li-ion) or Ni-Mh or Ni-Cd type). Also for example, the main battery BR can be of the low voltage type (typically 450 V for illustration purposes). But it could be medium voltage or high voltage.

It should also be noted that the main battery BR is associated with a battery box BB which notably includes a battery calculator CB.

The CNR charging connector is connected to the main battery BR and the charger CH via a power line (or circuit) LA. This allows the latter (LA) to provide in particular the cal supply current which is necessary for the operation of external electrical equipment EE temporarily coupled to the CNR charging connector via the DIF interface device. It will also be noted that in the example illustrated non-limitingly on the the power supply line (or circuit) LA is double in order to allow the main battery BR to be recharged in mode 2 or 3 as well as in mode 4. But the power supply line (or circuit) LA can be simple when only recharges in mode 2 or 3 are possible.

The CNR charging connector is also connected to an LC control line and a CD detection circuit of the S system.

The detection circuit CD is arranged so as to in particular detect a first voltage u1 at its terminals, which is representative of the type of an external connector or of the DIF interface device, and in particular if it is adapted to recharges in mode 2, 3 or 4 or to the power supply of at least one external electrical equipment EE. This may be what those skilled in the art frequently call a proximity line.

Furthermore, this detection circuit CD is capable, when it has been temporarily reconfigured for this purpose by the CA recharging computer, of supplying a second voltage u2, necessary for the operation of at least one internal device DIj of the charging device. DIF interface, in the event of detection of the type of the DIF interface device by the detection circuit CD. In fact, in the event of coupling of the CNR charging connector to the DIF interface device, the detection circuit CD is able to detect the first voltage u1 and to signal the latter (u1) to the AC charging computer, which then charges to trigger a reconfiguration of the detection circuit CD (to which we will return later), so that it provides the second voltage u2 necessary for the operation of each internal device DIj.

This detection circuit CD is preferably coupled to the charger CH which controls the recharges, as illustrated non-limitingly in the .

The LC control line is arranged so as to allow exchanges of information with an external connector or external electrical equipment EE which is temporarily connected to the CNR charging connector via the DIF interface device. It may be what those skilled in the art frequently call a control pilot line (or in English “control pilot line” (CPL)). It is preferably coupled to the CH charger which controls the recharges, as illustrated without limitation on the .

As illustrated at least partially in Figures 1 to 3, a DIF interface device, according to the invention, comprises at least one internal device DIj and a control module MC.

Each internal device DIj is arranged so as to ensure at least one internal function when it receives the second voltage u2 from the detection circuit CD (reconfigured) on terminals which are associated with this detection circuit CD. In addition, each internal device DIj is arranged so as to signal an internal operating fault of its interface device DIF.

For example, each internal function, provided by an internal device DIj, can be chosen from a function for controlling the operation of at least part of the interface device DIF, a function for monitoring at least part of the device d DIF interface, a protection function of at least part of the DIF interface device, an operation diagnostic function of at least part of the DIF interface device, and a signaling function of at least one operating state of an internal device DIj. It will be understood that such internal functions are intended to participate in securing the supply of electrical energy (from the system S) to each external electrical equipment EE coupled to the interface device DIF, via the electrical power cable C2 ( to which the latter (DIF) possibly belongs).

In the examples illustrated without limitation in Figures 2 and 3, the DIF interface device comprises three internal devices DI1 to DI3 (j = 1 to 3) connected in parallel to the terminals of the DIF interface device which are intended to be coupled to the terminals of the CNR charging connector connected to the detection circuit CD (to receive the second voltage u2). But a DIF interface device can include any number of internal devices DIj, as long as this number is at least equal to one (1).

For example, the first internal device DI1 (j = 1) can provide a function of controlling the operation of at least part of the interface device DIF. It can for example include at least one microcontroller.

Also for example, the second internal device DI2 (j = 2) can provide a monitoring function and a protection function for at least part of the DIF interface device. It can for example include at least one electrical insulation controller and/or a temperature controller (thermal monitoring).

Also for example, the third internal device DI3 (j = 3) can provide a signaling function for at least one operating state of an internal device DIj. It can for example include at least one light emitting diode (or LED (“light emitting diode”)).

The control module MC is able, when it receives the second voltage u2 and in the absence of signaling of a fault by an internal device DIj, to trigger a predefined variation vp of the first voltage u1 and/or the presence of 'a third predefined voltage u3 on the LC control line. This predefined variation vp and/or this third predefined voltage u3 is/are capable of triggering in the system S the supply of the supply current cal for the (each) external electrical equipment EE.

It will be understood that the supply of the supply current cal can result, depending on the chosen arrangement of the system S, either from the detection by the detection circuit CD of the predefined variation vp of the first voltage u1, or from the detection by the control line LC of the presence at its terminals of the third predefined voltage u3, or both of the detection by the detection circuit CD of the predefined variation vp of the first voltage u1 and of the detection by the control line LC of the presence at its terminals of the third predefined voltage u3.

It will also be understood that in the event of coupling of the CNR charging connector to the DIF interface device, the detection circuit CD is capable of detecting the predefined variation vp of the first voltage and of reporting this detected predefined variation vp to the charging computer. CA and/or the LC control line is capable of detecting at its terminals the third predefined voltage u3 and of reporting this detected third predefined voltage u3 to the CA charging calculator. On receipt of this(s) report(s), the CA recharge computer is responsible for triggering the supply by the supply line LA of the supply current cal (from the main battery BR) for the (each) equipment external electrical EE (and therefore via the associated terminals of the DIF interface device).

In the absence of reception of the second voltage u2 by the control module MC as well as in the presence of the second voltage u2 and a signal of a fault by an internal device DIj, the interface device DIF does not deliver the predefined variation vp of the first voltage u1 on its terminals which are coupled to the terminals of the CNR charging connector associated with the detection circuit CD and/or the third voltage u3 on its terminals which are coupled to the terminals of the CNR charging connector associated with the LC control line. Consequently, the detection circuit CD can only detect the first voltage u1 (and therefore the type of the interface device DIF) and/or the control line LC detects a voltage which is different from the third voltage u3, which is interpreted by the AC recharge computer as a malfunction of the DIF interface device requiring it not to be supplied with the cal supply current. Thus, when the DIF interface device is the subject of a malfunction, a user of the system S or of external electrical equipment EE (to be powered by the latter (S)) does not risk being put into operation. danger, which is particularly advantageous. In other words, the DIF interface device is securely powered when it is coupled to at least one external electrical equipment EE and to the CNR charging connector.

For example, and as illustrated without limitation in Figures 2 and 3, the DIF interface device can also comprise first CR1 and second CR2 resistive components and a first control member OC1.

The first resistive component CR1 has a first resistance r1 and is capable of being coupled in parallel to the detection circuit CD, and more precisely on its terminals coupled to the terminals of the charging connector CNR which are associated with the detection circuit CD.

The second resistive component CR2 has a second resistor r2 and two terminals which are capable of being coupled respectively to the control line LC and to the detection circuit CD, and more precisely to terminals which are coupled to the terminals of the associated CNR charging connector respectively to the control line LC and to the detection circuit CD.

The first control member OC1 is capable, when placed in a first state predefined by a user, of allowing the coupling of the second resistive component CR2 to the control line LC and to the detection circuit CD to participate in the definition of the first voltage and/or the third voltage u3. It will be understood that it is when the first CR1 and second CR2 resistive components find themselves coupled simultaneously to the detection circuit CD, thanks to the placement of the first control member OC1 in its first state predefined by the user, that this causes the definition of the first voltage u1 (function of the first r1 and second r2 resistors) on the terminals of the interface device DIF which are coupled to the terminals of the charging connector CNR associated with the detection circuit CD.

It will be understood that the coupling of the first CR1 and second CR2 resistive components to the CD detection circuit makes it possible to signal to the AC recharge computer that the DIF interface device has been put into operation, and therefore in the absence of such coupling the AC recharge calculator deduces that the DIF interface device has not been put into operation and therefore that there is nothing to do (and in particular not to trigger the supply of the second voltage u2).

For example, the first resistive component CR1 can be a simple resistor. But as a variant, the first resistive component CR1 can consist of at least one electronic component.

Also for example, the second resistive component CR2 can be a simple resistor. But as a variant, the second resistive component CR2 can consist of at least one electronic component.

Also for example, the first control member OC1 can be a simple switch connected in series with the second resistive component CR2, and having a first on (or closed) state, causing the coupling of the second resistive component CR2 to the detection circuit CD, and a second non-conducting (or open) state, preventing the coupling of the second resistive component CR2 to the detection circuit CD.

In a first embodiment illustrated on the , the control module MC can comprise a third resistive component CR3 and a first control element EC1. The third resistive component CR3 has a third resistance r3 and is capable of being coupled to the control line LC to participate in the definition of the third voltage u3. The first control element EC1 is coupled to each internal device DIj and is arranged, when it receives the second voltage u2 and a fault signal by an internal device DIj, so as to prevent the coupling of the third resistive component CR3 to the line LC control.

It will be understood that when the first CR1, second CR2 and third CR3 resistive components are simultaneously used (and therefore find themselves coupled to each other), this causes the definition of the predefined variation vp of the first voltage u1 on the terminals of the device d the DIF interface which are coupled to the terminals of the CNR charging connector associated with the CD detection circuit, but also the definition of the third voltage u3 on the terminals of the DIF interface device which are coupled to the terminals of the CNR charging connector associated with the LC control line.

It will also be understood that when the first control element EC1 does not receive the second voltage u2, or receives the second voltage u2 but no fault signaling by an internal device DIj, it allows the coupling of the third resistive component CR3 to the line LC control.

For example, and as illustrated without limitation on the , the third resistive component CR3 can be adapted to be coupled in series to the second resistive component CR2 by the first control element EC1. But alternatively it could be coupled in parallel.

Also for example, the third resistive component CR3 can be a simple resistor. But as a variant, the third resistive component CR3 can be made up of at least one electronic component.

Also for example, the first control element EC1 can be a switch having first and second states depending on the reception or absence of reception of a fault signal. For example, it can normally be placed in a first non-conducting (or open) state, authorizing the coupling of the third resistive component CR3 to the control line LC, when it does not receive the second voltage u2 or when it receives the second voltage u2 but no fault signal, and placed in a second on (or closed) state, causing a short circuit of the third resistive component CR3, when it receives the second voltage u2 and a fault signal.

In a second embodiment illustrated on the , the control module MC can include a switching member OC2 and an information device DIN.

The switching member OC2 has a first terminal B1 which is suitable for being coupled to the detection circuit CD, a second terminal B2 which is suitable for being coupled to the control line LC (when the interface device DIF is coupled to the CNR charging connector) and a third terminal B3. The second terminal B2 can be coupled to the first terminal B1 if the switching member OC2 receives a first command or to the third terminal B3 if the switching member OC2 receives a second command.

The information device DIN is coupled to the third terminal B3 and is capable of being coupled to the detection circuit CD to receive the second voltage u2. In addition, it is arranged, when it receives the second voltage u2 and in the absence of signaling of a fault by an internal device DIj, to generate the second command and supply the third voltage u3 to the control line LC. It will be understood that once the second command is transmitted to the switching member OC2, the second terminal B2 is coupled to the third terminal B3, and therefore the information device DIN finds itself coupled to the control line LC, which then allows it to supply the third voltage u3 to the control line LC in the absence of signaling of a fault by an internal device DIj.

For example, and as illustrated without limitation on the , the first terminal B1 can be coupled in series to the second resistive component CR2.

In this case, and by way of example, the information device DIN can be arranged, when it receives the second voltage u2 and a fault signal by an internal device DIj, to generate the first command so that the second resistive component CR2 is coupled to the control line LC and causes the presence on the latter (LC) of a fourth voltage u4 which is different from the third voltage u3 and therefore capable of preventing the supply of the supply current cal by the LA feeder line. It will be understood that once the first command is transmitted to the switching member OC2, the second terminal B2 is coupled to the first terminal B1, and therefore the second resistive component CR2 finds itself coupled to the control line LC, which gives it then allows you to participate in the definition, on the terminals of the LC control line, of a fourth voltage u4 which is characteristic of an operating fault of the DIF interface device.

In a variant embodiment, the information device DIN can be arranged, when it receives the second voltage u2 and a fault signal by an internal device DIj, to generate the second command and provide the control line LC with a fifth voltage u5 which is different from the third voltage u3 and capable of preventing the supply of the supply current cal by the supply line LA. It will be understood that once the second command is transmitted to the switching member OC2, the second terminal B2 is coupled to the third terminal B3, and therefore the information device DIN finds itself coupled to the control line LC, which then allows it to supply the LC control line with a fifth voltage u5 which is characteristic of an operating fault of the DIF interface device.

It will be noted that the DIN information device can, for example, include a PWM (“Pulse Width Modulation”) type generator, and therefore delivering pulse width modulated voltages allowing, for example, example, to also inform the AC charging calculator about the characteristics of the DIF interface device. Among these characteristics, we can in particular cite a target voltage and/or a target frequency for an output power of the alternating current and/or a maximum supported current and/or a maximum supported power.

Also for example, and as illustrated non-limitingly in Figures 2 and 3, the detection circuit CD can comprise a reconfiguration circuit CG arranged so as to transform it into a power supply line making it possible to supply the second voltage u2 to the switching device. DIF interface, when the AC charging computer orders it (following the detection of the first voltage u1 (and therefore the type of the DIF interface device)). It will be understood that the reconfiguration consists of moving from a first configuration in which the detection circuit CD only provides a detection function to a second configuration in which the detection circuit CD provides a power supply function as well as possibly a function detection (to detect the predefined variation vp).

For example, and as illustrated without limitation in Figures 2 and 3, the reconfiguration circuit CG can comprise a voltage source ST, a fourth resistive component CR4 and a second control member OC3.

The fourth resistive component CR4 may comprise a first terminal connected to a channel of the detection circuit CD, and a second terminal connected to the voltage source ST (which is then connected in series with the fourth resistive component CR4).

For example, the fourth resistive component CR4 can be a simple resistor. But as a variant, the fourth resistive component CR4 can be made up of at least one electronic component.

Also for example, the voltage source ST can deliver a voltage of +5 V.

Also for example, the second control member OC3 is mounted in parallel with the fourth resistive component CR4. It is then connected to the first and second terminals of the latter (CR4). In this case, this second control member OC3 can be a simple switch normally having a first non-conducting (or open) state, preventing the supply of the second voltage u2 to the detection circuit CD, and a second conducting (or closed) state. , short-circuiting the fourth resistive component CR4 and therefore allowing the supply of the second voltage u2 to the detection circuit CD. For example, if the second control member OC3 receives a first command from the AC charging calculator, it switches to its first state, and if the second control member OC3 receives a second command from the AC charging calculator, it switches to its second state. state.

Claims (10)

Interface device (DIF) having a type defined by a first voltage, comprising at least one internal device (DIj) ensuring at least one internal function when it receives a second voltage, and capable of being coupled to at least one piece of electrical equipment (EE) requiring a supply current to operate and to a charging connector (CNR) fitted to a system (S) and connected to a control line (LC) capable of exchanging power supply information, a detection circuit ( CD) capable of detecting said first voltage and of supplying said second voltage in the event of detection of said first voltage and a power supply line (LA) capable of supplying said supply current and equipping said system (S), characterized in that that it further comprises a control module (MC) capable, when it receives said second voltage and in the absence of signaling of a fault by an internal device (DIj), to trigger a predefined variation of said first voltage and/or the presence of a third predefined voltage on said control line (LC), this predefined variation and/or this third predefined voltage being capable of triggering in said system (S) the supply of said supply current for said electrical equipment (EE). Interface device according to claim 1, characterized in that it comprises i) a first resistive component (CR1) having a first resistance and capable of being coupled in parallel to said detection circuit (CD), ii) a second resistive component (CR2) having a second resistance and having two terminals adapted to be coupled respectively to said control line (LC) and said detection circuit (CD), and iii) a first control member (OC1) own, when it is placed in a first state predefined by a user, to allow said coupling of said second resistive component (CR2) to said control line (LC) and said detection circuit (CD) to participate in the definition of said first voltage and/or of said third voltage. Interface device according to claim 1 or 2, characterized in that said control module (MC) comprises i) a third resistive component (CR3) having a third resistance and capable of being coupled to said control line (LC) for participate in the definition of said third voltage, and ii) a first control element (EC1) coupled to each internal device (DIj) and own, when it receives said second voltage and a fault signal by an internal device (DIj) , to prevent said coupling of said third resistive component (CR3) to said control line (LC). Interface device according to the combination of claims 2 and 3, characterized in that said third resistive component (CR3) is capable of being coupled in series to said second resistive component (CR2). Interface device according to claim 1 or 2, characterized in that said control module (MC) comprises i) a switching member (OC2) having a first terminal (B1) adapted to be coupled to said detection circuit (CD) , a second terminal (B2) able to be coupled to said control line (LC) and a third terminal (B3), said second terminal (B2) able to be coupled to said first (B1) or third (B3) terminal depending on whether said switching member (OC2) receives a first or second command, and ii) an information device (DIN) coupled to said third terminal (B3) and capable of being coupled to said detection circuit (CD) to receive said second voltage , and arranged, when it receives said second voltage and in the absence of signaling of a fault by an internal device (DIj), to generate said second command and supply said third voltage to said control line (LC). Interface device according to the combination of claims 2 and 5, characterized in that said first terminal (B1) is coupled to said second resistive component (CR2). Interface device according to claim 6, characterized in that said information device (DIN) is arranged, when it receives said second voltage and a fault signal by an internal device (DIj), to generate said first control command. so that said second resistive component (CR2) is coupled to said control line (LC) and causes the presence on the latter (LC) of a fourth voltage different from said third voltage and capable of preventing the supply of said supply current by said supply line (LA). Interface device according to claim 5 or 6, characterized in that said information device (DIN) is arranged, when it receives said second voltage and a fault signal by an internal device (DIj), to generate said second control and supply to said control line (LC) a fifth voltage different from said third voltage and capable of preventing the supply of said supply current by said supply line (LA). Electrical equipment (EE) requiring a supply current to operate, characterized in that it comprises an interface device (DIF) according to one of the preceding claims. System (S) comprising i) a control line (LC) capable of exchanging power supply information, ii) a detection circuit (CD) capable of detecting a first voltage defining a type and of providing a second voltage in the event of detection of said first voltage, iii) a power supply line (LA) capable of supplying a supply current, iv) a charging connector (CNR) connected to said detection circuit (CD), control line (LC) and power line (LA), and v) a charging calculator (CA) capable of exchanging power information with at least one external electrical equipment (EE) requiring said supply current to operate and temporarily coupled to said connector recharge (CNR), characterized in that in the case of coupling of said recharge connector (CNR) to an interface device (DIF) according to one of claims 1 to 8 and coupled to said external electrical equipment (EE), said detection circuit (CD) is capable of detecting a predefined variation of said first voltage and of reporting this predefined variation detected to said charging computer (CA) and/or said control line (LC) is capable of detecting a third predefined voltage and to report this detected third predefined voltage to said charging calculator (CA), and in that said charging calculator (CA) is arranged so as to trigger the supply of said second voltage by said control line (LC) in the event of detection of said first voltage, and to trigger the supply by said power line (LA) of said supply current for said external electrical equipment (EE) in the event of signaling the detection of said predefined variation and/or of said third voltage predefined.