• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an electric or electronic device (7) able to be powered in operation by a first voltage value generated by a first electrical network (3) and by a second voltage value greater than the first voltage value and generated by a second electrical network (8). The device comprises: a first interface (70) of connectors capable of being connected, under normal connection conditions, to a ground conductor and a voltage conductor of the first electrical network and to a serial system bus (75) capable of conveying Datas ; a second interface (71) of connectors adapted to be connected to a ground conductor and a voltage conductor of the second electrical network; each connector interface (70, 71) having a ground connection and the ground connections of the two connector interfaces being connected together to form a common ground; a control module (74) powered by the first voltage value and adapted to receive and / or transmit the data; and at least one switch module (76) interposed in series between the bus (75) and the control module (74), the switch module (76) being able to switch on the one hand, in a closed position, when the sending and / or receiving data, and secondly, in an open position when all the inputs / outputs of the first connector interface are connected together.
    公开号:FR3021764A1
    申请号:FR1454764
    申请日:2014-05-27
    公开日:2015-12-04
    发明作者:Mickael Bigey；Jonathan Fournier
    申请人:Valeo Systemes Thermiques SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to electrical or electronic devices requiring two distinct supply voltages. The invention relates in particular, although not exclusively, to the field of motorized vehicles where certain equipment must be designed to operate with two supply voltages of different values, typically a low voltage of the order of 12 volts, and a mean voltage 10 of the order of 48 volts. For this type of equipment, a specification defining in particular certain architectural rules and validation tests is currently being developed by a consortium of car manufacturers. This specification ("Electrical and Electronic components in the vehicle 48 V 15 - vehicle electrical system, Requirement and tests", specification 148 of 29/08/2011) requires in particular: - that all 12 volts / 48 volts equipment has a common mass , and includes a 12-volt connector interface to allow its connection to the 12-volt vehicle network, and a 48-volt connector interface to allow its connection to the 48-volt vehicle network, each connector interface having its own ground connection; - that all 12 volt / 48 volt equipment meets a leakage current measurement test, so as to ensure that the 48 volt and 12 volt power supplies are well protected against these leakage currents. FIG. 1 schematically illustrates the assembly carried out for the validation test relating to the leakage currents of an electrical or electronic device 1 comprising a first connection interface 10 for the 12 volts (ground and 12 volts DC supply) and for a connection a LIN bus (English initials for Local Interconnect Network or 30 in French local interconnection network, note that the LIN bus is a serial system bus), and a second interface connector 11 for 48 volts (mass and continuous power supply at 48 volts). This test consists of connecting, as represented in FIG. 1, all the 3021764 2 inputs / outputs of the first interface of connectors 10 to a first terminal of a DC voltage generator, to connect the inputs of the second interface of connectors 11 to the second terminal of the DC voltage generator, to apply a voltage of 70 volts by means of the DC voltage generator, and to measure the current by a conventional ammeter. The electrical or electronic device 1 is validated if, during this test, the measured current remains less than or equal to 1 microamp (in absolute value). Already known architectures of electrical or electronic devices capable of operating with two supply voltages.
    [0002] FIG. 2 schematically illustrates, in particular, an additional heater module 2 which uses two 12-volt voltages for its power supply, one at low power, represented by the voltage generator 3, the other at a higher power, typically in the order of 1000 to 1200 watts, represented by the voltage generator 4. Such additional heater is used at the start of a motor vehicle to warm up the cabin more quickly. The low power supply 3 is used for the management and the interface of the module 2 while the higher power supply 4 is used to supply the heating resistors (not shown) contained in the module. As can be seen in the architecture of FIG. 2, only the ground of the voltage generator 4 is connected to the module. In addition, the LIN data input of the module is supplied by the voltage generator 3 and the generator 4 ground. Such an architecture could therefore not be used for a 12 volts / 48 volts device conforming to the specification mentioned above. above which imposes two separate masses for each supply network. Finally, such an architecture applied to a 12-volt / 48-volt device would not protect the LIN bus against leakage currents between the 48-volt power supply and the LIN data input of the module. In particular, the validation test relating to the leakage currents described above with reference to FIG. 1 could not be carried out without the risk of destroying the LIN transmitting / receiving sub-module. Figure 3 schematically shows another known architecture of electrical or electronic device 5 used in electric motor vehicles. Here, the device 5 is powered, through two 3021764 3 connector interfaces 50 and 51, with two very different voltages, a first low voltage of the order of 12 volts, represented by the voltage generator 3, and a second very high voltage, of the order of 400 volts, represented by the voltage generator 6. For safety reasons, this type of device 5 must necessarily include an isolation transformer 52 in order to create a galvanic isolation between the power supply at 12 volts and power at 400 volts. A similar architecture could be used to make a 12-volt / 48-volt electrical or electronic device compatible with the specification cited above. Nevertheless, this solution is expensive and cumbersome, because of the use of an isolation transformer, and remains complex to implement. The object of the invention is to overcome the above disadvantages by proposing a simple architecture of an electrical or electronic device with two supply voltages, for example 12 volts / 48 volts, which meets the requirements of the specification relating to the presence of two earth terminals, and which makes it possible to protect the LIN transmitting / receiving sub-module during a validation test relating to the leakage currents. The present invention satisfies this objective by proposing an electric or electronic device 20 able to be powered in operation by a first voltage value generated by a first electrical network and by a second voltage value greater than the first voltage value and generated by a second electrical network, the device comprising: a first interface of connectors able to be connected, under normal connection conditions, to a ground conductor and a voltage conductor of the first electrical network and to a serial system bus adapted to convey data; a second connector interface capable of being connected to a ground conductor and a voltage conductor of the second electrical network; Each connection interface comprising a ground connection and the ground connections of the two connector interfaces being connected together to form a common ground; a control module powered by the first voltage value and able to receive and / or transmit the data on said bus; and at least one switch module interposed in series between said bus and the control module, the switch module being able to switch on the one hand, in a closed position, when sending and / or receiving data, and on the other hand, in an open position when all the inputs / outputs of the first connector interface are connected together. By normal connection conditions are meant the links necessary for the normal operation of the device, that is to say the usual connections of the connectors interfaces to the two electrical networks. According to other particularly advantageous advantageous features: said serial system bus is a LIN bus; said second connector interface is capable of being connected to said ground conductor and to said voltage conductor of the second electrical network under said normal conditions; the switch module may comprise a MOSFET transistor supplied with voltage by the first electrical network; - The switch module is associated with a non-return diode adapted to prevent any current to flow to the first connector interface when the switch module is in the open position; The electrical or electronic device is a master node in a LIN network; the electronic or electronic device is a slave node in a LIN network. The invention and the advantages it provides will be better understood from the following description of a nonlimiting example of implementation of the invention, with reference to the appended figures, in which: FIG. 1, already described above, shows schematically the equivalent electrical circuit for a leakage current measurement test of a device 12 volts / 48 volts prescribed by the specification 148 above; FIG. 2, already described above, schematically illustrates a known architecture for a device using two 12-volt supply voltages; FIG. 3, already described above, schematically illustrates a known architecture for a device using a supply voltage of 12 volts and a supply voltage of 400 volts; FIG. 4 schematically illustrates an exemplary architecture of an electrical or electronic device with two supply voltages, for example 12 volts / 48 volts, in accordance with the present invention; FIG. 5 represents an example of a LIN network, some of whose nodes are electrical or electronic devices with two supply voltages in accordance with the invention. FIG. 4 represents an electrical or electronic device 7 according to one possible embodiment of the invention, in the non-limiting context of a dual 12 volt / 48 volt power supply. This device 7 is represented in its normal conditions of use, that is to say receiving a first 12-volt supply voltage of a first 12-volt network (represented by a voltage generator 3), and a second higher supply voltage, typically of the order of 48 volts, of a second network (represented by a voltage generator 8). To do this, the device 7 comprises: a first connector interface 70 capable of being connected to the two terminals of the voltage generator 3, that is to say in practice to the ground conductor GND_12 and to the voltage conductor 12 volts of the first 12 volt network; a second connector interface 71 capable of being connected to the two terminals of the voltage generator 8, that is to say in practice to the ground conductor GND_48 and to the 48 volt voltage conductor of the second 48-volt network.
    [0003] Inside the device 7, the ground connections of the two connector interfaces 70 and 71 are connected together to form a common ground. Between the two interfaces connectors 70 and 71, the device 7 5 comprises, preferably, an EMC filtering module 72 (Anglo-Saxon initials set for Electro Magnetic Compatibility) to remove possible voltage variations, and a module 73 d 12-volt / 48-volt interface that incorporates device-specific features. For example, if the device 7 is an additional heater, the module 73 will include the management components and the interface as well as the heating resistors. The device 7 also comprises a LIN control module 74, for example powered by 12 volts, which is able to receive and / or transmit LIN data on a LIN bus 75. The device 7 further comprises a switch module 76 in series. between the LIN bus 75 and the LIN control module 74, associated with a non-return diode 77. The switch module 76 is preferably a MOSFET transistor powered by the 12-volt network, that is to say whose source S and the drain D are respectively connected to the ground connection of the connection module 70 and to the ground connection of the connection module 71, and whose gate G receives the voltage 12 volts. The presence of this switch module 76 will make it possible to protect the LIN components when the device 7 is subjected to the leakage current measurement test. Indeed, by carrying out this test (in accordance with the electrical diagram of FIG. 1), all the inputs / outputs of the first connector interface 70 are connected together, so that the voltage Vis becomes zero, even by applying the voltage 70 volts imposed by the test, and switches the transistor 76 in its open position. The non-return diode 77 ensures that no current can flow in the other direction, that is to say from the second connector interface 71 to the first connector interface 70. The presence of this On the other hand, the switch module 76 does not affect the normal operation of the device 7, in particular at the level of the LIN data exchanges which are able to intervene on the bus LIN 75. FIG. 5 gives, by way of example, no limiting, an architecture of a LIN network likely to equip a motor vehicle. It is recalled that a LIN network consists of connecting several intelligent devices, also called nodes of the network, which communicate with each other according to a communication protocol which relies on a master-slave configuration. In this example, the network comprises a master node M and three slave nodes denoted respectively Si, S2, S3. The master node M and the two slave nodes Si and S3 are here two-power devices according to the present invention. The slave node S2, on the other hand, is an electronic device 10 powered only at 12 volts. In order not to unnecessarily overload FIG. 5, only the LIN control module 74 for each node has been represented, the switch 76 associated with the non-return diode 77 for the nodes M, Si and S3, the different connections to the two power supplies. 12 volts and 48 volts, and the bus LIN 75. As can be seen in FIG. 5, the various LIN control modules 74 comprise an NPN type switch used in open collector mode, that is to say in series with a draw resistance between the terminals of the 12-volt power supply. With such an implementation, the different nodes must exchange messages at zero volts, called "dominant messages", on the bus 75. More precisely, when the master node M must transmit a dominant message on the bus 75, the switch of its control module 74 is in the closed position so as to impose a logic zero on the bus 75. The drain-gate voltage of the switch modules 76 included in the slave nodes Si and S3 is then equal to 12 volts, which corresponds to switch modules in closed position. Thus, the dominant message sent by the master node M arrives at the input of the LIN control modules 74 of the set of slave nodes. If now the slave node Si wishes to emit a dominant message on the LIN bus 75, its control module 74 also imposes a logic zero on the drain of its switch module 76. The latter closes and connects its drain to its source. Here again, the dominant message may well be conveyed on the LIN bus 75. Although the invention has been described in the context of the application 12 volts / 48 volts of the automotive field, it can find an interest in all 3021764 8 cases where a device requires a dual power supply at so-called safe voltage values. In addition, the LIN bus can be any other serial bus system. 5
    权利要求:
    Claims (8)
    [0001]
    REVENDICATIONS1. Electrical or electronic device (7) adapted to be powered in operation by a first voltage value generated by a first electrical network (3) and by a second voltage value greater than the first voltage value and generated by a second electrical network ( 8), the device comprising: - a first interface (70) of connectors adapted to be connected to a ground conductor and a voltage conductor of the first electrical network (3) and to a serial system bus (75) capable of carrying data; - A second interface (71) of connectors adapted to be connected to a ground conductor and a voltage conductor of the second electrical network (8); each connector interface (70, 71) having a ground connection and the ground connections of the two connector interfaces (70, 71) being connected together to form a common ground; a control module (74) powered by the first voltage value and able to receive and / or transmit the data on said bus (75); and - at least one switch module (76) interposed in series between said bus (75) and the control module (74), the switch module (76) being able to switch on the one hand, in a closed position, when sending and / or receiving data, and secondly, in an open position when all the inputs / outputs of the first connector interface (70) are connected together.
    [0002]
    2. Device according to claim 1, characterized in that said serial system bus (75) is a LIN bus.
    [0003]
    3. Device according to any one of the preceding claims, characterized in that said second interface (71) connector is adapted to be connected to said ground conductor and said voltage conductor of the second electrical network (8). 3021764 10
    [0004]
    4. Device according to any one of the preceding claims, characterized in that said switch module (76) comprises a MOSFET transistor supplied with voltage by the first power grid (3).
    [0005]
    5. Device according to any one of the preceding claims, characterized in that the switch module (76) is associated with a non-return diode (77) capable of preventing any current from flowing to the first connector interface (70) when the switch module (76) is in the open position.
    [0006]
    6. Device according to any one of the preceding claims, characterized in that it constitutes a master node in a LIN network.
    [0007]
    7. Device according to any one of claims 1 to 5, characterized in that it constitutes a slave node in a LIN network.
    [0008]
    8. Device according to any one of the preceding claims, characterized in that the first voltage value is 12 volts, and the second voltage value is 48 volts.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2950412B1|2018-06-13|Electrical or electronic device with two input voltages
    EP3614514A1|2020-02-26|Electrical or electronic device with two input voltages
    EP3005518B1|2017-07-26|Phase selection for a polyphase electrical installation
    EP3345270B1|2020-11-04|Electric current distribution system for a vehicle
    EP2629998B1|2020-05-20|Device and method for estimating a touch current and protecting an electrical apparatus against such touch currents
    WO2015049045A1|2015-04-09|Device for diagnosing the loss of a connection between an electronic control module and a ground
    EP2861450B1|2016-07-13|Method and system for disabling and enabling an electric motor vehicle control module
    FR3085652A1|2020-03-13|SOLENOID VALVE OF A CLEANING DEVICE FOR A GLASS SURFACE
    FR3007530A1|2014-12-26|DEVICE FOR DIAGNOSING THE LOSS OF A CONNECTION BETWEEN AN ELECTRONIC CONTROL MODULE AND A MASS
    FR3017008A1|2015-07-31|CONTROL ARRANGEMENT FOR CONTROLLING THE ELECTRICAL POWER SUPPLY OF A PLURALITY OF ELECTRICAL COMPONENTS WITH CONTINUOUS CURRENT
    EP3100465B1|2018-10-03|System and corresponding method for managing a battery comprising a plurality of battery cells
    EP3451181B1|2021-10-20|Circuit for protecting against high voltages for usb type c receiver
    CA2894374C|2016-04-26|Redundant electric circuit for cutting off the power supply to a piece of equipment
    FR2986383A1|2013-08-02|Method for managing lithium ion notebook battery in car, involves selecting two energy storage elements belonging to two separate branches, and assembling selected energy storage elements directly in parallel arrangement
    WO2014207351A1|2014-12-31|Apparatus for locking electrical devices of a vehicle via digital communication
    FR3089706A1|2020-06-12|Electronic power outage system with redundant control solution.
    FR3089073A1|2020-05-29|Electric accumulator module control system
    EP1304837A1|2003-04-23|Logical coupler in a telecommunication network
    EP1596304A1|2005-11-16|Computer network using a secured system for identifying nodes
    FR3056709A1|2018-03-30|AIR PULSE FOR MOTOR VEHICLES POWERED BY TWO ELECTRICAL POWER SUPPLIES
    FR2986759A1|2013-08-16|Motor vehicle for use as police vehicle, has interface element connected to internal communication network such that electronic components are able to access real-time information coming from sensors attached to components of vehicle
    EP3446390A1|2019-02-27|Protection for the electrical power supply of a vehicle
    FR3043960A1|2017-05-26|ELECTRONIC DEVICE FOR A MOTOR VEHICLE POWERED BY TWO ELECTRIC POWER SUPPLY NETWORKS
    WO2018055249A1|2018-03-29|Electric heating device for automotive vehicle supplied with power by two electrical power supply networks
    FR3056710A1|2018-03-30|AIR PULSE FOR MOTOR VEHICLE POWERED BY TWO TENSIONS
    同族专利:
    公开号 | 公开日
    JP5985702B2|2016-09-06|
    FR3021764B1|2016-05-27|
    JP2015224030A|2015-12-14|
    EP2950412B1|2018-06-13|
    EP2950412A1|2015-12-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE10232941A1|2002-07-19|2004-02-12|Siemens Ag|Motor vehicle sensor protection circuit for protection of sensors with a lower voltage supply than that of the vehicle power supply, comprises a current measurement unit linked to a current limiter or switch|
    DE10248415A1|2002-10-17|2004-05-13|Audi Ag|Current supply circuit has regulator for reducing higher load voltage from generator to greater than/equal to on-board network voltage during mechanical/electromechanical switch arrangement switching|
    WO2012131235A2|2011-03-28|2012-10-04|Valeo Equipements Electriques Moteur|Method and system for redundantly supplying electrical power to a hybrid motor vehicle|
    EP2711248A1|2012-09-20|2014-03-26|Eberspächer catem GmbH & Co. KG|Dual-voltage onboard power supply system with excess voltage protection|WO2017162946A1|2016-03-24|2017-09-28|Valeo Equipements Electriques Moteur|Powerline communication modem, interface circuit and communication network for a motor vehicle|JPS55106434U|1980-02-15|1980-07-25|
    JP3173016B2|1990-12-26|2001-06-04|スズキ株式会社|Vehicle control device|
    JPH06245262A|1993-02-19|1994-09-02|Mazda Motor Corp|Multiple transmitter|
    JP4859755B2|2007-05-30|2012-01-25|三洋電機株式会社|Electric vehicle distributed control system|
    JP2010245860A|2009-04-07|2010-10-28|Toyota Industries Corp|Bus system|FR3056875A1|2016-09-23|2018-03-30|Valeo Systemes Thermiques|ELECTRICAL HEATING DEVICE FOR A MOTOR VEHICLE POWERED BY TWO ELECTRIC POWER SUPPLY NETWORKS|
    FR3056709B1|2016-09-23|2020-01-17|Valeo Systemes Thermiques|AIR PULSE FOR MOTOR VEHICLE POWERED BY TWO ELECTRIC POWER SUPPLY NETWORKS|
    FR3056876B1|2016-09-23|2020-10-23|Valeo Systemes Thermiques|ELECTRIC HEATING DEVICE FOR MOTOR VEHICLES POWERED BY TWO ELECTICAL SUPPLY NETWORKS|
    DE102017207603A1|2017-05-05|2018-11-08|Continental Automotive Gmbh|Electronic device for a motor vehicle|
    法律状态:
    2015-06-01| PLFP| Fee payment|Year of fee payment: 2 |
    2015-12-04| PLSC| Search report ready|Effective date: 20151204 |
    2016-05-27| PLFP| Fee payment|Year of fee payment: 3 |
    2017-05-30| PLFP| Fee payment|Year of fee payment: 4 |
    2018-05-28| PLFP| Fee payment|Year of fee payment: 5 |
    2019-05-31| PLFP| Fee payment|Year of fee payment: 6 |
    2020-05-30| PLFP| Fee payment|Year of fee payment: 7 |
    2021-05-31| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1454764A|FR3021764B1|2014-05-27|2014-05-27|ELECTRICAL OR ELECTRONIC DEVICE HAVING TWO POWER SUPPLY VOLTAGES|FR1454764A| FR3021764B1|2014-05-27|2014-05-27|ELECTRICAL OR ELECTRONIC DEVICE HAVING TWO POWER SUPPLY VOLTAGES|
    EP15165732.7A| EP2950412B1|2014-05-27|2015-04-29|Electrical or electronic device with two input voltages|
    JP2015106180A| JP5985702B2|2014-05-27|2015-05-26|Electrical or electronic device with two supply voltages|
    [返回顶部]