EP3191911B1 - Dispositif de commutation servant à commuter une alimentation en énergie d'une unité de commande électronique, appareil ménager et procédé afférent - Google Patents

Dispositif de commutation servant à commuter une alimentation en énergie d'une unité de commande électronique, appareil ménager et procédé afférent Download PDF

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Publication number
EP3191911B1
EP3191911B1 EP15757474.0A EP15757474A EP3191911B1 EP 3191911 B1 EP3191911 B1 EP 3191911B1 EP 15757474 A EP15757474 A EP 15757474A EP 3191911 B1 EP3191911 B1 EP 3191911B1
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EP
European Patent Office
Prior art keywords
switching
terminal
unit
control unit
signal
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EP15757474.0A
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German (de)
English (en)
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EP3191911A1 (fr
Inventor
Mircea BARBU
Karl-Heinz Strobel
Manuel Lugauer
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority to PL15757474T priority Critical patent/PL3191911T3/pl
Publication of EP3191911A1 publication Critical patent/EP3191911A1/fr
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/575—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices characterised by the feedback circuit

Definitions

  • the present invention relates to a switching device for switching a power supply for an electronic control unit of a household appliance, having a first terminal for connection to a DC voltage source, a second terminal for connection to a power supply terminal of the control unit and a switching transistor having a switching path between the first and the second terminal, wherein the switching path is switchable via a third terminal of the switching transistor, wherein the switching means is adapted to switch the switching path by means of an acting on the third terminal of the switching transistor electronic switching element of the switching device and acting on the third terminal of the switching transistor Switch off the switch-off signal of the control unit.
  • the invention relates to a household appliance with an electrical device for providing a household appliance function, an electronic control unit for controlling the electrical device, a DC voltage source and a switching device connected to the DC voltage source and the electronic control unit for switching a power supply for the electronic control unit.
  • the invention relates to a method for switching a power supply for an electronic control unit of a household appliance by means of a switching device, wherein the power supply is by means of a DC voltage source, wherein the power supply is switched by means of a switching path between the DC voltage source and the control unit providing switching transistor, wherein the switching path means an electronic switching element of the switching device acting on a third terminal of the switching transistor is switched on and switched off by means of a switch-off signal of the control unit acting on the third terminal of the switching transistor.
  • Control units are used to control in a domestic appliance electrical equipment in the intended manner, so that the household appliance can perform its intended function.
  • Such control units are usually part of the household appliance and usually require an electrical power supply, which is usually provided by a DC voltage source, which in turn relates energy from an electrical energy storage such as an accumulator, a battery, a public power grid or the like.
  • a DC voltage source which in turn relates energy from an electrical energy storage such as an accumulator, a battery, a public power grid or the like.
  • generic household appliances are often used - considered over the life - only for a fraction of the life. Therefore, it is common in generic household appliances to turn off the power supply for the control unit, so that during the period between uses of the household appliance, the energy consumption due to the control unit can be reduced.
  • the power supply for the control unit by means of a switching transistor switched off.
  • the switching transistor is turned off by the control unit itself as soon as the control unit has finished all control functions and no further controlling functions are to be performed.
  • an electromechanical pushbutton is connected in parallel with the switching transistor, by means of which the control unit can be supplied with electrical energy when the switching transistor is switched off, so that the control unit switches on the switching transistor again via a self-holding circuit. In this state, the control unit and thus the household appliance is then ready for use again.
  • the control unit is usually formed by an electronic circuit and / or a computer unit.
  • a capacitive support of these units supplying DC voltage is provided to ensure reliable operation of the control unit and to suppress interference.
  • these capacities are discharged via the control unit itself.
  • these capacitances are directly connected to the DC voltage source, so that a large inrush current flows. The same occurs when, due to certain control processes, such as when restarting after power failure or Like, the switching transistor is turned on again. Again, occur during power on large current spikes that burden the switching transistor.
  • both the pushbutton and the switching transistor must be designed for the correspondingly high current-carrying capacity.
  • DE 10 2011 082 252 relates to a system with a household appliance, which has a user-activated economy mode, in which an operating process of the household appliance is initiated due to an external activation signal.
  • the system also includes a separate from the household appliance energy management device, which is designed to issue the activation signal to the household appliance to initiate the operating process in the economy mode of the household appliance.
  • the energy management device determines a time for the start of the operating process as a function of a price for electrical energy.
  • the household appliance has a switching device for coupling the domestic appliance to an electrical power network. The switching device is switchable between a standby state in which the domestic appliance is electrically isolated from the mains and an active state in which the domestic appliance is electrically coupled to the mains.
  • the invention also relates to a household appliance, as well as a method for initiating an operating process of a household appliance.
  • DE 10 2008 042 832 relates to an electrical appliance, in particular in a dishwasher (1) or washing machine, with a standby module (7) for providing functions in a standby mode and with a power supply module (13) for supplying the standby module (7) during standby mode with electrical energy Power supply module (13) a thermoelectric generator (14) for recovering electrical energy from waste heat (AWM, AWH) of the electrical appliance (1) during normal operation and an electrical energy storage device (15) for storing the electrical energy generated by the thermoelectric generator (14) to provide the standby module with the stored electrical energy during standby.
  • AMM waste heat
  • AWH electrical energy storage device
  • US 7,765,416 relates to a control device for a power supply with zero power consumption in standby mode.
  • the invention is concerned with the task of reducing the current load on the components, in particular during a switch-on process.
  • the switching transistor is no longer operated exclusively in a pure switching mode, but - as explained in more detail below - at least partially in a transition from a first switching state to a second switching state in a linear operation. This is achieved by means of the integrator unit, which outputs a change of the state signal corresponding to the third terminal of the switching transistor.
  • the current pulse can be reduced in particular by switching on an integration of a change of the state signal, preferably in such a way that the current pulse does not substantially or only insignificantly exceed a continuous current flow during the intended operation of the control unit ,
  • a circuit structure is selected in which the electronic switching element is no longer directly applied to the current to be switched. This ensures that both the electronic switching element and the switching transistor can be significantly relieved with respect to the current pulse load. Accordingly, the current is switched exclusively with the switching transistor. Only in this way can the effectiveness of the integrator unit occur in the manner according to the invention.
  • the electronic switching element For the electronic switching element, this results in a significantly reduced load, especially in the case of an electromechanical switch, a reduced contact erosion, in particular if contact bounce is to be taken into account.
  • the switching transistor can be achieved that the current pulse load, in particular during a switching operation such as the turn-on can be significantly reduced, so that it is possible to significantly reduce the switching transistor in terms of its design. This not only saves material costs, but it can also be advantageously used on SMD components that are suitable for high integration of electronic circuits, for example because cost-effective assembly techniques can be used. In particular, advantages with regard to integration, packing density and costs can thus be achieved.
  • a domestic appliance of the generic type comprises in particular a device for preparing food, for example a hob, an oven, a microwave oven, combinations thereof or the like, a device for the care of laundry items, for example treating laundry items, in particular a washing machine, a tumble dryer, an ironing device , Combinations thereof or the like, a device for cleaning, in particular treating dishes, For example, a dishwasher, a vacuum cleaner or the like and also a device for the particular cooled storage of items, preferably food, for example, a refrigerator, a freezer, combinations thereof or the like.
  • a household appliance function includes, for example, food preparation, laundry care, cleaning of articles, surfaces or the like, combinations thereof, or the like.
  • the household appliance preferably has electrical devices by means of which the intended function or use can be realized.
  • the electrical devices may include, for example, an electric machine, an electric heater, an inverter, in particular an inverter, combinations thereof, or the like.
  • the domestic appliance has the electronic control unit. This can for example have an input unit, via which a user can manually make inputs for controlling the household appliance in the desired manner.
  • the control unit can have a display unit, by means of which operating states are recognizably displayed to the user.
  • a combination of a display unit with an input unit may be provided, for example in the form of a touch-sensitive screen or the like.
  • control unit may also include sensors and their evaluation to control the electrical device according to a control program.
  • control unit can also be program-based and, in particular, have a computer unit for this purpose, so that different operating sequences can be selected and / or realized in a simple manner, for example by a user input and / or depending on acquired measured values by means of the sensors.
  • control unit can also be used for communication with appliances external to household appliances, for example by establishing a communication connection to a communication terminal, in particular a mobile radio terminal.
  • the communication connection can be made for example via a communication network such as the Internet, a mobile radio network, combinations thereof or the like.
  • a generic household appliance is used by the user usually only during a relatively short period of use, which is much shorter than the life of the household appliance.
  • the household appliance During the rest of the period between periods of use, the household appliance is not in normal operation. Usually it is switched off. During the period of use, it is therefore not necessary to provide the control unit with electrical energy. In such household appliances, therefore, a shutdown of the power supply of the control unit is provided so that the consumption of electrical energy between the periods of use can be reduced.
  • the control unit of the household appliance normally requires only a fraction of the total power consumed by the household appliance during normal operation of the household appliance during a period of use for its intended operation. Accordingly, the DC voltage source is adapted so that it can reliably supply the control unit with electrical energy during normal operation, but at the same time it is limited in terms of power available, so that the required power to be provided can be provided inexpensively and by a compact DC voltage source.
  • the DC voltage source can be, for example, an electrical energy store such as an accumulator, a battery, combinations thereof or the like. It can also be formed by a power supply, which derives its energy from, for example, a public power grid. Again, combinations may be provided.
  • the DC voltage source provides a smoothed DC voltage, so that the control unit, in particular, if it has electronic components, a computer unit, combinations thereof or the like, can ensure the reliable operation of the control unit as intended.
  • the switching transistor may for example be a bipolar transistor, but also a field effect transistor, in particular a metal oxide semiconductor field effect transistor (MOSFET), an isolated gate bipolar transistor (IGBT), or the like.
  • MOSFET metal oxide semiconductor field effect transistor
  • IGBT isolated gate bipolar transistor
  • the switching transistor may also be formed by a thyristor arrangement, in particular by a gate turn-off thyristor (GTO) or the like.
  • GTO gate turn-off thyristor
  • the switching transistor may also be formed by combination circuits using the aforementioned components.
  • the switching transistor is arranged such that its switching path is connected between the first and the second connection.
  • the switching transistor has a third terminal as a control terminal, which can be acted upon by a switching signal to switch the switching path between the first and the second terminal in the desired switching state, in particular the switched on and the off state.
  • the switching signal is preferably formed as a digital signal, wherein a first level of the switching signal is selected such that the switching path assumes the on state, whereas a second level is selected such that the switching path occupies the off state.
  • the switching transistor is only operated at most partially in a switching operation.
  • Switching operation means that a very low electrical resistance is provided in an activated state between the two connections forming the switching path of the switching transistor, so that a high current flow is possible at very low residual voltage.
  • the switching path of the switching transistor is high impedance, that is, it provides a high electrical resistance, so that there is substantially no or only a very low, in particular negligible current flow even at high voltage applied to the switching path.
  • a transition from one state to the other takes place in the prior art with a shortest possible transition time, also called switching time, which is usually determined essentially by physical properties of the switching transistor. This differs from a linear operation, which is not used in the prior art but in switching transistors in switching operation.
  • the invention provides that the switching transistor is operated in a linear mode at least during a state change in the form of a transition from the switched-off state to the switched-on state (switch-on process).
  • the switching operation is preferably - as previously explained - realized.
  • a linear operation can also be provided here. The linear operation preferably extends in a period between the two states "on” and "off".
  • the electronic switching element may be formed by a semiconductor switch, in particular a manually controllable by a control switching transistor, an electromechanical switch, combinations thereof or the like
  • the electromechanical switch may be formed for example as a manually operable device, which is arranged for example on a control panel of the household appliance , Preferably, the electronic switching element is part of the switching device, but it may also be separate from the switching device and be connected only to this.
  • the electromechanical probe preferably has a metallic switching contact, which is closed in a pressure actuation due to a manual action, so that between two terminals of the probe, a low-resistance or good electrically conductive connection is made.
  • the electrically conductive connection is interrupted, as a rule due to a spring preload.
  • the electronic switching element is used to enable or start activation of the power supply of the control unit by the switching unit in the off state of the switching path of the switching transistor.
  • the electromechanical switch is connected in parallel to the switching path of the switching transistor, so that the switching path of the switching transistor is short-circuited by pressing the button.
  • the control unit is briefly supplied via the button with electrical energy from the DC voltage source, so that the control unit immediately delivers a hold signal to the switching transistor, which then turns on its switching path, so that when the manual operation on the button, the energy supply via the switching transistor is maintained.
  • the control unit As soon as the control unit has finished all control operations and no further control tasks are pending, the control unit outputs a switch-off signal which causes the switching transistor to set the switching path to the switched-off state. Thereupon, the electrical voltage available at the control unit builds up over the power consumption of the control unit until the voltage has substantially subsided. The control unit is in this state substantially voltage or de-energized. Thereby, a consumption of electrical energy between the periods of use of the household appliance, in particular in stand-by mode, can be reduced.
  • the invention provides the state unit, which may be formed by an electronic memory cell.
  • the state unit provides a state signal representing a switching state of the switching path.
  • the state signal is a digital signal, so that it has, for example, two signal levels, namely a signal level representing an on state of the switching path, whereas a second signal level represents an off state of the switching path.
  • the electronic switching element is - in contrast to the prior art - no longer connected in parallel to the switching transistor, but according to the invention to the state unit.
  • the electronic switching element upon actuation is basically no longer acted upon by an inrush current, but only with a small control current that is required to activate or actuate the state unit.
  • the electronic switching element can be designed to be correspondingly smaller and at the same time achieve higher reliability and service life.
  • the control unit is preferably also connected to the control unit in such a way that the switch-off signal of the control unit is transmitted to the status unit.
  • the state unit is now interposed according to the invention. Thereby, the state unit can provide the status signal in response to an operation of the electronic switching element and the turn-off signal.
  • the invention provides that the state signal from the state unit is not performed directly on the third terminal of the switching transistor, but instead the state unit via the integrator at the third terminal of the switching transistor is connected to control the switching path of the switching transistor in response to the state signal.
  • the integrator unit can be achieved that a switching edge of the state signal is extended, so that the switching transistor is not with its minimum possible Switching the switching path, but with a prolonged by a design of the integrator unit switching time. This is preferably the switch-on time, so that as a result current pulses when switching on can be considerably reduced, if not completely suppressed.
  • the integrator unit may provide a corresponding delay for powering off as well. This may be advantageous, for example, if inductances are present in the circuit whose rapid switching off could lead to short-term voltage peaks and dangerous states. Again, the invention can thus bring about an improvement.
  • the integrator unit is designed to enable a switch-off operation of the switching transistor shorter in time than a switch-on process.
  • the advantage of the time-prolonged switching on with reduction of the current pulse can be achieved and at the same time a fast switching off can be realized, so that a reliable shutdown can be realized, in particular in case of faults or the like.
  • the integrator unit for a rising switching edge of the state signal and for a falling edge of the state signal has different circuit branches, which are selectively effective, for example. This can be achieved, for example, with the aid of additional diodes in the integrator unit.
  • the state unit is a bistable flip-flop circuit having a first and a second input terminal, wherein the state unit is formed, at a first control signal at the first terminal a state signal representing an on state and at a second control signal at the second input terminal a off State signal representing state.
  • the flip-flop circuit can be realized, for example, with discrete components. In addition, it can also be realized by an integrated circuit, in which at least one corresponding circuit is already realized. Regarding the function, the flip-flop circuit may be formed as a D flip-flop, an RS flip-flop, a JK flip-flop or the like.
  • control unit for providing the switch-off signal is connected via a first amplifier circuit to the second input terminal of the flip-flop circuit.
  • the switch-off signal of the control unit can act directly on the state unit, in this case the flip-flop circuit, and cause a state change of the state signal to a state signal representing the switched-off state.
  • the electronic switching element is advantageously connected to the first input terminal of the flip-flop circuit, so that a state signal representing the switched-on state can be effected by a manual actuation of the electronic switching element.
  • the electronic switching element is connected via an interference suppression circuit to the first input terminal of the flip-flop circuit.
  • a suppression circuit By providing a suppression circuit, a reliable control of the state unit can be achieved. For example, due to interference caused by the noise suppression circuit can be reduced or suppressed. The reliability of the switching device according to the invention can be further improved.
  • the interference suppression circuit has a low-pass filter or a bandpass filter. These filter types are particularly well suited for the realization of interference suppression and can also be implemented cost-effectively. Depending on the characteristics of the electronic switching element and / or the interference signal to be suppressed, either the low-pass filter or the band-pass filter can be selected.
  • the interference signal can also be generated, for example, by an undesired, for example brief, operation.
  • the switching device has a voltage interrupt protection unit, which is connected to the first input terminal of the flip-flop circuit.
  • the voltage interrupt protection unit serves to ensure, for example, short-term, power interruptions of the DC voltage source, an automatic restart of the switching transistor, so that the already started Use period of the household appliance can be continued in the intended manner.
  • the voltage interrupt protection unit can have an energy store, in particular a capacitor, which can be charged over a predetermined time constant. The capacitor can be charged via a resistor for this purpose.
  • a control signal can be provided, which switches a switching element such as a transistor, in particular MOSFET, which in turn sets the state unit.
  • a power interruption of a few seconds to a minute or several minutes or even a larger period can be bridged. It is therefore no longer necessary in the event of a power interruption that the user manually re-activates the household appliance and reprograms and starts the already started utilization program.
  • the voltage interruption protection unit it can be achieved, in particular, that an already executed usage program can be automatically continued after a voltage return.
  • the voltage interrupt protection unit is designed to be deactivated by means of the switch-off signal. With this function can be achieved that a reliable shutdown can be realized, even if the off signal is only pending. Overall, the reliability of the function can be improved.
  • the switching device has a second amplifier circuit, via which the state unit is connected to the integrator unit.
  • the second amplifier circuit With the second amplifier circuit, a gain of the state signal and a level adjustment can be achieved so that the switching level switching switching level can be reliably achieved.
  • the second amplifier circuit signal matching can be achieved to further improve the reliability of the switching device of the invention.
  • the switching transistor is a MOSFET whose source terminal forms the first terminal and whose drain terminal forms the second terminal, and the integrator unit provides a resistance circuit for connection to a gate terminal of the MOSFET forming the third terminal.
  • the MOSFET is particularly suitable as a switching transistor for the switching device according to the invention. With little circuit complexity, therefore, the function of the invention can be achieved. It proves particularly advantageous if a gate-source capacitance cooperates with the integrator unit and thus improves the desired switch-on time.
  • the resistance circuit is designed to form a time constant which is greater for the switch-on of the switching path of the switching transistor than for the switch-off.
  • different circuit branches may be provided, which preferably react to the respective switching edges of the state signal.
  • the integrator unit has an electrical capacitance connected in parallel with the gate-drain path of the MOSFET.
  • the function of the integrator unit can be further improved, in particular with regard to the adjustability of the switching speed of the switching transistor.
  • the switching device preferably has a priority circuit, which is designed to suppress the switch-off signal when the electronic switching element and the switch-off signal of the control unit collapse in time.
  • a priority circuit which is designed to suppress the switch-off signal when the electronic switching element and the switch-off signal of the control unit collapse in time.
  • Advantageous embodiments of the switching device according to the invention are to be regarded as advantageous embodiments of the method.
  • representational components of the switching device are formed alone or in combination to allow the method steps.
  • Fig. 1 shows a washing machine 10 as a household appliance in a diagrammatically opened front view.
  • Washing machine 10 also has a rotatably mounted washing drum 54 which is drivable via a drive belt 58 by means of a drive motor 56.
  • the drive motor 56 is connected via a line 70 to a switching unit 52, which in turn is connected in unspecified manner to an electrical power grid, here the public power grid.
  • the public power grid provides the required electrical energy.
  • the drive motor 56 comprises a converter by means of which rotational speeds and torques can be set in the desired manner.
  • a DC voltage source 24 is further connected, which is in the present case designed as a power supply and which is connected directly to the public power grid, so that they preferably permanently provides a DC electrical voltage.
  • the electrical DC voltage is in the present case smoothed, so that it can be used directly for the electrical power supply of a control unit 14 of the washing machine 10.
  • a switching device 12, 52 is connected, which provides the provided by the DC voltage source 24 smoothed DC voltage switching for the control unit 14. In this way, the control unit 14 is supplied with electrical energy via the switching device 12, 52.
  • the control unit 14 has an unspecified input and output unit, which is presently provided as a touch-sensitive screen and provides a user interface for a user.
  • the control unit 14 further comprises a computer unit ⁇ P, so that the control unit 14 can execute washing programs in a desired manner in order to subject the laundry 10 to laundry items in the desired manner to a cleaning treatment.
  • the computer unit ⁇ P is connected via a line 72 to the drive motor 56, so that the drive motor 56 can be driven in the intended manner.
  • other peripherals of the washing machine 10 for example controls for the water supply and / or water discharge, a liquor circulation, a heater and the like, which are preferably also controlled by the computer unit .mu.P.
  • control unit 14 delivers a switch-off signal, by means of which the switching device 12, 52 is switched off.
  • the power supply to the control unit 14 is deactivated, so that the control unit 14 is energized or de-energized.
  • Fig. 2 shows a schematic diagram view of a circuit diagram for a switching device 12 according to the prior art.
  • the switching device 12 has a first connection 22 for connection to the DC voltage source 24, a second terminal 26 for connection to a power supply terminal of the control unit 14 and a switching transistor 18, which provides a switching path 16 between the first and the second terminal 22, 26.
  • the switching path 16 is switchable via a third terminal 20 of the switching transistor 18.
  • the switching transistor 18 is in the present case designed as a MOSFET.
  • the switching device 12 has a button 28 as an electronic switching element, which is designed as a manually operable electromechanical probe and which is also connected to the first and the second terminal 22, 26, in parallel to the switching transistor 18.
  • control unit 14 connected to the connection 26 has undeclared electrical capacitances, in this case capacitors.
  • the actuation of the switch 28 therefore leads to a pulsed current load both the DC voltage source 24 and the probe 26 and the control unit 14.
  • the button 28 is exposed to increased stress, so that its switching contact must be designed for a correspondingly high stress.
  • the switching on of the switching transistor 18 also takes place instantaneously, that is to say that the switching transistor 18 switches on with its design-related switch-on time.
  • this turn-on time is very short, so that when turning on the switching transistor 18, a very large current pulse must be passed through the switching transistor 18 therethrough.
  • the DC voltage source 24 and the control unit 14 are acted upon in accordance with the current pulse.
  • Further driver components 66 which represent a driver circuit, are connected to the third terminal 20 of the switching transistor 18 in order to be able to apply a switch-off signal 30 to its switching path.
  • the driver components 66 include, inter alia, two bipolar transistors, which are interconnected in a known manner, in order to be able to apply the switch-off signal 30 to the third terminal 20.
  • This circuit does not provide a state unit with a status signal.
  • This circuit known in the prior art is familiar to the person skilled in the art, so that no further discussion is required.
  • Fig. 3 shows a schematic diagram of a switching device 52 according to the invention, which has a first terminal 22 for connection to the DC voltage source 24, a second terminal 26 for connection to a power supply terminal the control unit 14 and a switching transistor 18 which provides a switching path 16 between the first and the second terminal 22, 26.
  • the switching path 16 is switchable via a third terminal 20 of the switching transistor 18.
  • the switching device 52 is designed to switch on the switching path 16 by means of an electromechanical pushbutton of the switching device 52 acting on the third connection 20 of the switching transistor 18 and to switch it off by means of a switch-off signal of the control unit acting on the third connection 20 of the switching transistor 18.
  • the switching device 52 for this purpose, a state unit 32 in the form of a flip-flop circuit, here a bistable flip-flop 40, on.
  • the state unit 32 provides a switching state of the switching path 16 representing a state signal 34.
  • the switching device 52 comprises an integrator unit 36, which comprises a resistance circuit 62.
  • the resistor circuit 62 comprises two series-connected resistors, wherein the series circuit is connected at one end to a capacitor providing an electrical capacitance, which is connected in parallel to the drain-gate path of the switching transistor 18.
  • a non-designated Zener diode which is connected in parallel to the gate-source path of the switching transistor 18, serves in a known manner to a gate circuit.
  • the integrator unit 36 is acted on at a center tap of the series circuit of the resistance circuit 62 by a second amplifier circuit 60.
  • the second amplifier circuit 60 has a two-stage transistor amplifier in which bipolar transistors are provided in emitter circuit.
  • the second amplifier circuit 60 is interposed between the state unit 32 and the integrator unit 36. The second amplifier circuit 60 is thus supplied at its input with the state signal 34 of the state unit 32.
  • the integrator unit 36 makes it possible to temporally extend switching edges of the state signal 34, so that the switch-on operation or the switch-off operation of the switching transistor 18 can be extended. Thereby can Current pulses, in particular during switching on the switching path, reduced or even avoided.
  • the state unit 32 has the bistable flip-flop circuit 40 formed by discrete components with a first and a second input terminal 42, 44.
  • the state unit 32 is designed to provide a state signal representing an on-state at a first control signal at the first input terminal 42 and a state signal representing an off-state at a second control signal at the second input terminal 44.
  • control unit 14 for providing the switch-off signal 30 is connected via a first amplifier circuit 38 to the second input terminal 44 of the flip-flop circuit 40.
  • the first amplifier circuit 38 effects a signal adaptation or amplification of the switch-off signal 30, so that it is adapted to the signal requirements of the state unit 32 and to enable a reliable provision of the state signal 34 representing the switched-off state.
  • the push-button 28 is connected via an interference suppression circuit 46 to the first input terminal 42 of the flip-flop circuit 40.
  • the interference suppression circuit 46 comprises a low-pass filter for this purpose.
  • the switching device 52 has a voltage interrupt protection unit 50, which is likewise connected to the first input terminal 42 of the flip-flop circuit 40. It is thus connected parallel to the push button 28 at the first input terminal 42.
  • the voltage interruption protection unit 50 By means of the voltage interruption protection unit 50, it can be achieved that a reliable restarting after voltage return can be ensured in the event of power interruptions of the DC voltage source 24, so that the intended operation of the washing machine 10 can be continued without a user needing to intervene.
  • the voltage interruption protection unit 50 has an unspecified capacitor as an energy store, which ensures such that when the voltage returns, a signal at the first input terminal 42 of the state unit 32 is applied, so that State unit 32, a state signal 34 representing the on state is provided.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Electronic Switches (AREA)

Claims (14)

  1. Dispositif de commutation (52) destiné à commuter une alimentation en énergie pour une unité de commande (14) électronique d'un appareil ménager (10), comprenant une première borne (22) pour le raccordement à une source de tension continue (24), comprenant une deuxième borne (26) pour le raccordement à une borne d'alimentation en énergie de l'unité de commande (14), et comprenant un transistor de commutation (18) qui fournit un trajet de commutation (16) entre la première et la deuxième bornes (22, 26),
    - le trajet de commutation (16) étant commutable par l'intermédiaire d'une troisième borne (20) du transistor de commutation (18),
    - le dispositif de commutation (52) présentant un élément de commutation (28) électronique agissant sur la troisième borne (20) du transistor de commutation (18), destiné à activer le trajet de commutation (16),
    - et le dispositif de commutation (52) coupant le transistor de commutation (18) au moyen d'un signal de coupure (30) de l'unité de commande (14), agissant sur la troisième borne (20) du transistor de commutation (18),
    caractérisé par
    - une unité d'état (32) laquelle fournit un signal d'état (34) qui représente un état de commutation du trajet de commutation (16) en fonction d'une activation de l'élément de commutation (28) électronique et du signal de coupure (30),
    - ainsi que par une unité d'intégrateur (36) destinée à prolonger un flanc de commutation du signal d'état,
    - l'unité d'état (32) étant raccordée à la troisième borne (20) par l'intermédiaire de l'unité d'intégrateur (36) afin de commander le trajet de commutation (16) du transistor de commutation (18) en fonction du signal d'état (34).
  2. Dispositif de commutation selon la revendication 1, caractérisé ce que l'unité d'intégrateur (36) prolonge un flanc de commutation du signal d'état de manière à ce que le transistor de commutation (18) active le trajet de commutation avec un temps de commutation prolongé.
  3. Dispositif de commutation selon la revendication 1 ou 2, caractérisé ce que l'unité d'état (32) présente un circuit de bascule (40) bistable comprenant une première borne d'entrée et une deuxième borne d'entrée (42, 44), l'unité d'état (32) étant réalisée, lors d'un premier signal de commande sur la première borne d'entrée (42), pour fournir un signal d'état représentant un état activé et, lors d'un deuxième signal de commande sur la deuxième borne d'entrée (44), pour fournir un signal d'état représentant un état désactivé.
  4. Dispositif de commutation selon la revendication 3, caractérisé ce que l'unité de commande (14), pour fournir le signal de coupure (30), est raccordée à la deuxième borne d'entrée (44) du circuit de bascule (40) par l'intermédiaire d'un premier circuit amplificateur (38).
  5. Dispositif de commutation selon la revendication 3 ou 4, caractérisé ce que l'élément de commutation (28) électronique est raccordé à la première borne d'entrée (42) du circuit de bascule (40) par l'intermédiaire d'un circuit antiparasite (46).
  6. Dispositif de commutation selon la revendication 5, caractérisé ce que le circuit antiparasite (46) présente un filtre passe-bas (48) ou un filtre passe-bande.
  7. Dispositif de commutation selon l'une quelconque des revendications 3 à 6, caractérisé par une unité de protection contre les interruptions de tension (50) qui est raccordée sur la première borne d'entrée (42) du circuit de bascule (40).
  8. Dispositif de commutation selon l'une quelconque des revendications précédentes, caractérisé par un deuxième circuit amplificateur (60) par l'intermédiaire duquel l'unité d'état (32) est raccordée à l'unité d'intégrateur (36).
  9. Dispositif de commutation selon l'une quelconque des revendications précédentes, caractérisé en ce que le transistor de commutation est un MOSFET (18) dont la borne de source forme la première borne (22) et dont la borne de drain forme la deuxième borne (26), et en ce que l'unité d'intégrateur (36) fournit un circuit de résistance (62) pour le raccordement à une borne de grille du MOSFET (18) formant la troisième borne (20).
  10. Dispositif de commutation selon la revendication 9, caractérisé ce que le circuit de résistance (62) agit avec la capacité grille-source du transistor de commutation (18) afin de former une constante de temps, différents circuits de dérivation du circuit de résistance étant ménagés, lesquels réagissent aux flancs de commutation respectifs du signal d'état, et la constante de temps pour l'opération d'activation du trajet de commutation (16) du transistor de commutation (18) étant plus grande que pour l'opération de désactivation.
  11. Dispositif de commutation selon la revendication 9 ou 10, caractérisé ce que l'unité d'intégrateur (36) présente une capacité électrique (64) commutée en parallèle à un trajet grille-drain du MOSFET(18).
  12. Dispositif de commutation selon l'une quelconque des revendications 1 à 8, caractérisé par un circuit de priorité qui est réalisé pour supprimer le signal de coupure (30) lors d'une coïncidence temporelle de l'activation de l'élément de commutation (28) électronique et du signal de coupure (30) de l'unité de commande (14).
  13. Appareil ménager (10) comprenant un dispositif électrique (56) destiné à fournir une fonction d'application ménagère, comprenant une unité de commande (14) électronique destinée à commander le dispositif électrique (56), une source de tension continue (24) ainsi qu'un circuit de commutation (52) raccordé à la source de tension continue (24) et à l'unité de commande (14) électronique, destiné à commuter une alimentation en énergie pour l'unité de commande (14) électronique, selon l'une quelconque des revendications précédentes.
  14. Procédé de commutation d'une alimentation en énergie pour une unité de commande (14) électronique d'un appareil ménager (10) au moyen d'un dispositif de commutation (52), l'alimentation en énergie étant réalisée au moyen d'une source de tension continue (24), l'alimentation en énergie étant activée au moyen d'un transistor de commutation (19) fournissant un trajet de commutation (16) entre la source de tension continue (24) et l'unité de commande (14), le trajet de commutation (16) étant activé au moyen d'un élément de commutation (28) électronique du circuit de commutation (52), agissant sur une troisième borne (20) du transistor de commutation (18), et étant désactivé au moyen d'un signal de coupure (30) de l'unité de commande (14), agissant sur la troisième borne (20) du transistor de commutation (18),
    caractérisé en ce
    qu'un signal d'état (34) représentant un état de commutation du trajet de commutation (16) est fourni sur la troisième borne (20) par l'intermédiaire d'une unité d'intégrateur (36) au moyen d'une unité d'état (32) en fonction d'une activation de l'élément de commutation (28) électronique et du signal de coupure (30) afin de commander le trajet de commutation (16) du transistor de commutation (18) en fonction du signal d'état (34).
EP15757474.0A 2014-09-09 2015-08-31 Dispositif de commutation servant à commuter une alimentation en énergie d'une unité de commande électronique, appareil ménager et procédé afférent Active EP3191911B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15757474T PL3191911T3 (pl) 2014-09-09 2015-08-31 Urządzenie przełączające do przełączania zasilania energii dla elektronicznej jednostki sterowania, urządzenie gospodarstwa domowego i sposób do tego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014218000.7A DE102014218000A1 (de) 2014-09-09 2014-09-09 Schalteinrichtung zum Schalten einer Energieversorgung für eine elektronische Steuereinheit, Haushaltgerät und Verfahren hierfür
PCT/EP2015/069829 WO2016037878A1 (fr) 2014-09-09 2015-08-31 Dispositif de commutation servant à commuter une alimentation en énergie d'une unité de commande électronique, appareil ménager et procédé afférent

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EP3191911A1 EP3191911A1 (fr) 2017-07-19
EP3191911B1 true EP3191911B1 (fr) 2019-08-21

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EP (1) EP3191911B1 (fr)
CN (1) CN106575128B (fr)
DE (1) DE102014218000A1 (fr)
PL (1) PL3191911T3 (fr)
RU (1) RU2666155C1 (fr)
WO (1) WO2016037878A1 (fr)

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EP3706305A1 (fr) * 2019-03-07 2020-09-09 Vorwerk & Co. Interholding GmbH Appareil électroménager et procédé de fonctionnement d'un appareil électroménager

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Publication number Priority date Publication date Assignee Title
CN1145091C (zh) * 2001-05-08 2004-04-07 李淑华 一种控制开关电路装置的方法及用其实现的控制电路
CN100359418C (zh) * 2004-07-05 2008-01-02 周先谱 一种零功耗待机电源控制装置
WO2007023403A2 (fr) * 2005-08-24 2007-03-01 Nxp B.V. Transconducteur lineaire destine a un controleur a cycle unique, notamment a un convertisseur de commutation cc-cc
CN201191808Y (zh) * 2008-05-09 2009-02-04 华中科技大学 一种单周期前馈开关控制电路
DE102008040744A1 (de) * 2008-07-25 2010-01-28 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät, insbesondere eine Geschirrspül- oder eine Waschmaschine
DE102008042832A1 (de) * 2008-10-14 2010-04-22 BSH Bosch und Siemens Hausgeräte GmbH Elektrogerät mit einem Bereitschaftsmodul
DE102009045591A1 (de) * 2009-10-12 2011-04-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät, insbesondere Haushalts-Geschirrspülmaschine
DE102009045595A1 (de) * 2009-10-12 2011-04-14 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät, insbesondere Haushalts-Geschirrspülmaschine
EP2445110B1 (fr) * 2010-10-22 2014-05-14 ABB Research Ltd Unité de commande de porte pour dispositif de commutation électrique
DE102011082252B4 (de) * 2011-09-07 2023-08-03 BSH Hausgeräte GmbH System mit einem Haushaltsgerät und einer Energiemanagementeinrichtung, Haushaltsgerät und Verfahren zum Einleiten eines Betriebsprozesses eines Haushaltsgeräts
CN203632550U (zh) * 2013-12-03 2014-06-04 成都芯源系统有限公司 一种开关模式电源及其控制电路
CN104022645B (zh) * 2014-06-12 2016-08-17 常州大学 一种开关变换器的恒频固定关断时间控制装置

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Publication number Publication date
PL3191911T3 (pl) 2020-03-31
EP3191911A1 (fr) 2017-07-19
CN106575128B (zh) 2018-03-30
DE102014218000A1 (de) 2016-03-10
RU2666155C1 (ru) 2018-09-06
WO2016037878A1 (fr) 2016-03-17
CN106575128A (zh) 2017-04-19

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