• 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:
    Device of domestic appliance and procedure for the start-up of a device of domestic appliance. The present invention relates to a household appliance device, in particular, to a cooking appliance device, with at least one switch driver unit (10), which is provided to feed at least one connection unit (12), and with a bootstrap unit (14), which is provided to supply at least one supply voltage (56) for the switch drive unit (10). In order to improve the connection behavior, it is proposed that the home appliance device has at least one adaptation unit (16), which is provided in at least one operating state to adapt the supply voltage (56) in dependence of at least one electric switch exciter parameter of the switch driver unit (10).
    公开号:ES2684417A1
    申请号:ES201730509
    申请日:2017-03-30
    公开日:2018-10-02
    发明作者:Arturo ACEVEDO SIMON；Carlos Calvo Mestre；Julio LAFUENTE URETA；Diego Puyal Puente
    申请人:BSH Hausgeraete GmbH；BSH Electrodomesticos Espana SA；
    IPC主号:
    专利说明:

    image 1 DOMESTIC DEVICE DEVICE AND PROCEDURE FOR COMMISSIONING A DOMESTIC DEVICE DEVICE DESCRIPTION
    The present invention refers to a household appliance device according to the preamble of claim 1 and a method for the operation of a household appliance device according to claim 10.
    Through the state of the art, induction cooking fields are known which comprise an inverter with two connection units and an excitation circuit with a bootstrap unit and at least two switch exciter units, where the control voltage of At least one of the connection units is set through the bootstrap unit. If there is an insufficient and / or slow bootstrap load, acoustic and annoying click noise may occur, as well as voltage and / or current peaks, which may cause errors in operation and / or that
    15 connection units are destroyed.
    The invention solves the technical problem of providing a generic household appliance device with better properties in relation to its connection behavior. According to the invention, this technical problem is solved by the features of claim 1 and the features of claim 10, while
    20 that advantageous improvements and improvements of the invention can be extracted from the secondary claims.
    The present invention refers to a household appliance device, in particular, to a cooking appliance device, with at least one switch exciter unit, which is intended to power at least one connection unit, and with a unit 25 bootstrap, which is intended to supply at least one supply voltage for the switch exciter unit, where the home appliance device has at least one adaptation unit, which is provided in at least one operating state to adapt the supply voltage depending on at least one electrical switch exciter parameter of the switch exciter unit. 30 By this embodiment, a home appliance device with better properties in terms of its connection behavior can be provided. it's possible
    image2
    advantageously achieving a faster loading of the bootstrap unit during an initial process, whereby the production of noise during the initial process can be advantageously reduced. In addition, in at least one operating state, the supply voltage to operate the inverter of a connection unit can be
    5 keep constant, so that current and / or voltage peaks can be advantageously avoided. Likewise, it is possible to increase the stability of the operation and / or reduce the material stress of the connection unit and / or of the inverter exciter unit, thus increasing the durability of the household appliance device. In addition, repair and material costs can be kept low.
    10 The term "home appliance device" includes the concept of at least one part, namely, a construction subgroup, of a household appliance, in particular, of a cooking appliance, preferably, of a cooking field and, particularly preferably, of an induction cooking field. The household appliance device may also comprise the at least one connection unit. Also, the device
    The domestic appliance may comprise a control unit, at least one inverter, a heating unit with at least one heating element, which is preferably made as an induction heating element, and / or a power supply unit, by for example, in the form of a voltage supply source, to supply an advantageously positive main supply voltage. By way of
    20 advantageously, the inverter comprises the connection unit. The term "connection unit" includes the concept of a unit with at least one connection element, which is intended to periodically connect an electric current. The term "connection element" includes the concept of an element that has at least two connection states and is intended to establish and / or separate at least one conductive connection.
    25 electrically between at least two conduction contacts in at least one of the connection states. Preferably, the connection element comprises at least one control terminal and is intended to modify and / or change the connection state depending on at least one control signal, in particular, an electrical voltage applied to the control terminal. of the connecting element and / or of an electrical potential of
    30 control applied to the control terminal of the connection element. Preferably, the connection element is made as a power connection element. The term "power connection element" includes the concept of a connection element that is intended to connect in at least one connection state an average current of at least 0.5 A, preferably at least 1 A, advantageously, at least 4 A
    35 and, preferably, at least 10 A. Advantageously, the power connection element is made as a semiconductor connection element, in particular as a transistor, in particular as MOSFET (Metal-Oxide Semiconductor Field-Effect Transistor) and / or, advantageously, as IGBT (Insulated-Gate Bipolar Transistor). The home appliance device and, in particular, the inverter, preferably has at least one other
    image3
    5 connection unit, which advantageously presents another connection element made as a power connection element.
    The term "switch exciter unit" includes the concept of an electronic unit comprising a switch exciter input, a switch exciter output and / or, preferably, two supply voltage terminals, and which is provided 10 for supplying a voltage signal, applied to the switch exciter input, of the adaptation unit and / or of the bootstrap unit, to the control unit, in particular, to the control terminal of the connecting element, in at least one state of operation, in particular, in a state of operation in which the supply voltage applied to the two supply voltage terminals exceeds a limit value. Preferably, the switch driver unit is electrically connected in parallel to the bootstrap unit. The term "switch exciter parameter" includes the concept of a switch exciter unit parameter, which is correlated with the supply voltage and / or, preferably, with a consumption current, advantageously, with an input current, from the switch exciter unit. The switch exciter parameter 20 may also have a value that is advantageously proportional to the value of the discharge current, the discharge voltage and / or the load potential. Advantageously, the switch exciter parameter, in particular, the input current, of the switch exciter unit is correlated with the connection frequency of the heating unit, advantageously of at least 25 heating element of The heating unit. The term "bootstrap unit" includes the concept of a unit that is intended to generate and / or provide a bootstrap voltage and to be supplied to the two power supply terminals of the switch driver unit, so that it can be addressed so preferred the connection status of the connection unit. Advantageously, the bootstrap voltage 30 corresponds here to the supply voltage of the switch driver unit, applied to the two supply voltage terminals. For this, the bootstrap unit advantageously comprises at least one bootstrap capacity and / or at least one bootstrap diode. The term "bootstrap capacity" includes the concept of a unit that comprises at least one capacity and is intended to temporarily store at least 35 energy, namely, bootstrap voltage, to power the unit.
    image4
    switch exciter. The bootstrap capacity is advantageously realized as a capacitor.
    The term "adaptation unit" includes the concept of an electrically connected unit advantageously with the switch exciter unit, which is intended to adapt the supply voltage. The adaptation unit is preferably provided to adapt the supply voltage of the bootstrap unit for the switch driver unit in such a way that the switch driver parameter is optimized. Preferably, the adaptation unit is electrically connected in series with the switch exciter unit and / or with the bootstrap unit. The term "adaptation" includes the concept of optimization and / or adjustment of the supply voltage to an advantageous operation. The term “planned” includes the concept of programmed, conceived and / or provided specifically. The expression that an object is intended for a particular function includes the concept that the object satisfies and / or performs this particular function in one or more application and / or operating states.
    It is also proposed that the connection unit be configured as a high-side power connection unit. The term "high side power connection unit" includes the concept of a connection unit with at least one connection element made as a power connection element, which is part of an inverter and is powered by a voltage of the bootstrap unit, other than the main supply voltage. In this way, a better connection behavior can be advantageously achieved.
    In an embodiment of the invention, it is proposed that the adaptation unit comprises a voltage adjustment unit, which is electrically connected between a voltage supply unit and the bootstrap unit and intended to adapt the supply voltage. The term "voltage adjustment unit" includes the concept of a unit that is intended to adjust, in particular, increase or decrease, the supply voltage depending on the switch exciter parameter. Preferably, the voltage adjustment unit comprises at least one voltage adjustment element, which is made as an electrical voltage regulator, as a connection regulator, as an electrical resistor, advantageously adjustable, and / or as a divider of the electrical voltage, and which is intended to adjust the supply voltage. Advantageously, the switch exciter parameter is proportional to the supply voltage, so that the adjustment of the supply voltage causes the change of the switch exciter parameter. Particularly advantageously, the voltage adjustment unit is electrically connected with the voltage supply unit, with the bootstrap unit, and / or with the switch driver unit. In this way, a better adaptation of the supply voltage can be achieved, as well as improving the connection behavior and preventing the generation of noise.
    image5
    In order to achieve a faster loading of the bootstrap unit and thus advantageously reduce the generation of noise, it is proposed that the voltage adjustment unit be provided to increase the supply voltage in at least one initial operating state . The term "initial operating state" includes the concept of an operating state that begins directly after the start-up of the household appliance device and / or after the selection of an operating program and / or after the change of operating program . The bootstrap unit, in particular, the bootstrap capacity, is here advantageously completely discharged before the start of the initial operating state, in particular, for a longer period of time of at least 1 ms, advantageously, of at least 0 , 5 s, preferably, at least 1 s, and particularly preferably, at least 5 s. The value of the voltage and / or the value of the effective voltage and / or the bootstrap voltage stored in the bootstrap capacity is modified and / or increased during the initial operating state. Advantageously, the initial process of the home appliance device is configured in the initial operating state as smooth operation.
    Likewise, it is proposed that the voltage adjustment unit be provided to keep the supply voltage value below a threshold value in at least one continuous operating state. Preferably, the voltage adjustment unit directs the supply voltage in such a way that the supply voltage does not exceed the threshold value, in particular, a value below which current spikes are prevented. In this way, it is possible to prevent current surges and it is possible to reduce the stress of the material of the connection unit. In addition, it can increase the useful life and reduce repair costs. The term "continuous operating state" includes the concept of an operating state that preferably directly follows the initial operating state. The value of the voltage and / or the value of the effective voltage and / or the maximum bootstrap voltage stored at most in the bootstrap capacity are at least essentially constant in the continuous operating state at least between two connection processes of the unit connection and, preferably, between all connection processes of the connection unit. The term "at least essentially constant" includes the concept of a modification at a maximum of 5%, preferably at a maximum of 2% and, particularly preferably, a maximum of 1%.
    image6
    In addition, it is proposed that the adaptation unit have a detection unit, which is intended to detect the switch exciter parameter. The detection unit is advantageously electrically connected to the voltage adjustment unit, and is intended to detect the switch exciter parameter and to supply a signal, corresponding to the detected value of the switch exciter parameter, preferably , a signal proportional to the detected value of the switch exciter parameter. Preferably, the adaptation unit is autonomous. The term “autonomous” includes the concept that it regulates itself, that it adapts to itself and / or that it is automatic. The expression that the “adaptation unit is autonomous” includes the concept that the adaptation unit adapts the supply voltage depending on the electrical switch exciter parameter of the switch exciter unit automatically and / or mechanically , advantageously, depending on a feedback signal from the connection unit, the switch driver unit, the bootstrap unit and / or, advantageously, the detection unit. Advantageously, the adaptation unit is provided here to regulate the supply voltage depending on the electrical switch exciter parameter of the switch exciter unit. The adaptation unit may not have a direct connection to the control unit or be activated by the control unit. By means of this embodiment, a particularly simple adaptation unit can be achieved and, advantageously, the adaptation made by the adaptation unit can be further improved.
    The switch exciter parameter could be a control potential of a conduction terminal of the connection unit and / or a load potential of the bootstrap unit. However, preferably, it is proposed that the switch driver parameter be an electrical input current of the switch driver unit, and that the detection unit is intended to detect, in particular, to capture and / or measure, the electrical input current and to advantageously supply it as a feedback signal. Thus, a simple detection of the switch exciter parameter can be advantageously achieved.
    In a preferred embodiment of the invention, it is proposed that the detection unit has at least one detection element made as a current sensor. Preferably, the detection element is made as a power transformer.


    current, as an electrical measuring resistor and / or as a measuring diode. Particularly preferably, the detection element is provided to transform the input current of the switch exciter unit into an electromagnetic signal proportional to the input current and, advantageously, to supply it as a feedback signal. Thus, an adaptation unit that minimizes the input current can be configured, which can greatly improve the detection of the input current and, thus, improve the adaptation unit.
    In addition, a procedure for the operation of a household appliance device is proposed, which comprises at least one switch exciter unit, which is intended to feed at least one connection unit, and a bootstrap unit, which It is intended to supply at least one supply voltage for the switch exciter unit, where, in at least one operating state, the supply voltage is adapted depending on at least one electrical switch exciter parameter of the drive exciter unit. switch. By this embodiment, a home appliance device with better properties in terms of its connection behavior can be provided. It is advantageously possible to achieve a faster loading of the bootstrap unit during an initial process, whereby the production of noise during the initial process can be advantageously reduced. In addition, in at least one operating state, the supply voltage for operating the inverter of a connection unit can be kept constant, so that the current and / or voltage peaks can be advantageously avoided. Likewise, it is possible to increase the stability of the operation and / or reduce the effort of the material of the connection unit and / or of the inverter exciter unit, thus being able to increase the durability of the household appliance device. In addition, repair and material costs can be kept low.
    The household appliance device and the procedure for putting into operation the household appliance device described are not limited to the application or to the embodiment described above, in particular being able to present a number of particular elements, components, and units. that differs from the amount mentioned in this document, as long as the purpose of fulfilling the functionality described here is pursued.
    Other advantages are taken from the following description of the drawing. An exemplary embodiment of the invention is shown in the drawing. The drawing, description and claims contain numerous features in combination. The expert in
    5
    10
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    matter will consider the characteristics advantageously also separately, and will gather them in other reasonable combinations.
    They show:
    Fig. 1 a household appliance made as a cooking field with a device
    domestic appliance, in top view,
    Fig 2 a wiring diagram of the home appliance device,
    Fig. 3 the graph of an adaptation, in an initial operating state, and
    Fig. 4 the graph of another adaptation, in a state of continuous operation.
    Description of the embodiment example
    Figure 1 shows a domestic appliance 30 made as an induction cooking field. The domestic appliance 30 has a cooking field plate 32 and a domestic appliance device. Alternatively, the household appliance could also be a cooking oven, such as an induction cooking oven, and / or a refrigerator and / or a dishwasher.
    Figure 2 shows a wiring diagram of the household appliance device. The home appliance device has a heating unit 34. The heating unit 34 may comprise several inductors (not shown). In addition, the heating unit 34 may comprise a connection arrangement (not shown) for actuating the inductors alternately and / or together, for example, in a temporary multiplexing process. The home appliance device has a main source of power supply 20 and a rectifier 80 to power the heating unit 34.
    Also, the household appliance device comprises an inverter 36. The inverter 36 comprises two connection units 12, 13. The connection units 12, 13 are made identically to each other. Each of the connection units 12, 13 comprises a control input and a connection element 42, 43. The connection elements 42, 43 are made as power connection elements, in particular, as IGBTs. The first connection unit 12 is made as a high side power connection unit. The second connection unit 13 is made as a low side power connection unit. In addition, each of the connection units 12, 13 comprises a free-running diode 76, 77 and a snubber capacity 78, 79, which are connected in parallel to the connection elements 42, 43. Alternatively,


    It is also conceived that the home appliance device has several inverters. In addition, it is conceived that at least one inverter has different connection units.
    The first terminal of the main power supply source 20 is connected here with the first terminal of the first connection unit 12 of the connection units 12, 13. The term "connected" here includes the concept of electrically conductively connected . The first terminal of the main power supply source 20 is connected to a collector terminal of the connection element 42 of the first connection unit 12. The second terminal of the main power supply source 20 is connected to the second terminal. of the second connection unit 13 of the connection units 12, 13 and with a transmitter terminal of the connection element 43 of the second connection unit 13. The inverter 36 is intended to transform a rectified mains voltage pulsed from the source main power supply 20 in a high frequency heating current and to be supplied to the heating unit 34. The heating unit 34 is arranged here on a bridge branch between a central outlet 44 of the inverter 36 and a resonance unit 46.
    In addition, the home appliance device comprises an excitation circuit 48. The excitation circuit 48 is provided to adjust the control voltage for the connection units 12, 13. For this, the excitation circuit 48 has a power supply unit. tension 38.
    The excitation circuit 48 has two switch exciter units 10, 11. The switch exciter units 10, 11 are made identically to each other. As an alternative, the use of different switch exciter units is also conceived. The switch exciter units 10, 11 are made as a high-voltage integrated circuit. Each of the switch driver units 10, 11 has a switch driver input and a switch driver output. In addition, each of the switch exciter units 10, 11 has two supply voltage terminals. The first switch exciter unit 10 of the switch exciter units 10, 11 is provided to drive the first connection unit 12, is connected to a control terminal of the first connection unit 12, and is intended to connect the first unit of connection 12 by means of a connection potential in the control terminal of the first connection unit 12. The second switch exciter unit 11 of the switch exciter units 10, 11 is provided to drive the second connection unit 13, is connected with a control terminal of the second connection unit 13, and it is provided to connect the second connection unit 13 by means of a connection potential in the control terminal of the second connection unit 13.
    image7
    The excitation circuit 48 has a control unit 50. The control unit 50 is connected to a switch driver input of the first switch driver unit 10 and to a switch driver input of the second switch driver unit 11. The control unit 50 is provided to predetermine the frequency for connecting the connection units 12, 13 to the first switch exciter unit 10 and the second switch exciter unit 11. Also, the control unit 50 is intended to modify the frequency for connect the connection units 12, 13 of the home appliance device.
    The excitation circuit 48 also has a bootstrap unit 14. The bootstrap unit 14 comprises a bootstrap diode 29 and a bootstrap capacitor 28. The bootstrap capacitor 28 is made as an energy store and has a voltage-dependent capacity value. As an alternative, it is also conceived that a bootstrap capacitor is independent of the voltage.
    The bootstrap diode 29 is connected to an anode terminal with the second terminal of the voltage supply unit 38. The first bootstrap capacitor terminal 28 is connected to a bootstrap diode 29 cathode terminal. In addition, the first capacitor terminal bootstrap 28 is connected to a first supply voltage terminal of the second switch driver unit 10. The second terminal of the bootstrap capacitor 28 is connected to the center socket 44 through a conduction path 52. Therefore, the capacitor bootstrap 28 is connected to a collector terminal of the second connection unit 13 and / or of the connection element 43 of the second connection unit 13 and to a transmitter terminal of the first connection unit 12 and / or of the connection element connection 42 of the first connection unit 12. Also, the bootstrap capacitor 28 is connected through the conduction path 52 with a second terminal of supply voltage of the first switch exciter unit 10. The conduction path 52 serves as the reference voltage terminal for the first connection unit 12 and is at a potential between the supply voltage 56 and a reference potential 54. The conduction path 52 is in an operating state in which the connection units 12, 13 are alternately connected to a reference potential 54 or to a potential of the network voltage V0. Bootstrap capacitor 28 is intended to supply a bootstrap VBS voltage. The bootstrap VBS voltage corresponds here to the supply voltage 56 of the first switch exciter unit 10 of the voltage supply unit 38 and, in at least one operating state, is applied to the supply voltage terminals of the first switch exciter unit
    image8
    10.
    The input voltage of the bootstrap unit 14 corresponds here to the superposition of the potential of the mains voltage V0 and the potential of the voltage of the voltage supply unit 38. The bootstrap VBS voltage corresponds roughly or exactly with the envelope of the input voltage and, in particular, with the supply voltage 56 of the first switch exciter unit 10. In comparison to the optimum supply voltage 56 of the first switch exciter unit 10, the bootstrap VBS voltage is increased by less in the initial operating state, which may cause the destruction and / or malfunction of the first switch exciter unit 10. In the continuous operating state, the bootstrap VBS voltage corresponds roughly or exactly to the supply voltage 56 of the first switch exciter unit 10, which can advantageously counteract the destruction n and / or the malfunction of the first switch exciter unit 10.
    In an operating state, the connection units 12, 13 are connected alternately. Therefore, at least at a first connection time, the second connection unit 13 is open and the first connection unit 12 is closed and, at least at a second connection time, other than the first connection time, the second unit of connection 13 is closed and the first connection unit 12 is open. Here, bootstrap capacitor 28 is charged and discharged alternately. The bootstrap capacitor 28 is discharged during the activation of the first connection unit 12, and is charged during the activation of the second connection unit 13 via the voltage supply unit 38 through the bootstrap diode 29.
    The excitation circuit 48 also has an adaptation unit 16. The first terminal of the adaptation unit 16 is electrically conductively connected to the voltage supply unit 38. In addition, the first terminal of the adaptation unit 16 is connected with a supply voltage terminal of the first switch driver unit 10. The second terminal of the adaptation unit 16 is electrically conductively connected to the anode terminal of the bootstrap diode 29. The adaptation unit 16 is intended to adapt in at least one operating state the supply voltage 56 in dependence on an electrical switch exciter parameter of the first switch exciter unit 10.
    image9
    The adaptation unit 16 has a voltage adjustment unit 18. The voltage adjustment unit 18 is electrically connected between the voltage supply unit 38 and the unit 14. The first terminal of the voltage adjustment unit 18 is connected to the voltage supply unit 38. The second terminal of the voltage adjustment unit 18 is connected to the anode input of the bootstrap diode 29. The voltage adjustment unit 18 is intended to adapt the voltage supply 56. Specifically, the voltage adjustment unit 18 is intended to increase the supply voltage 56 in an initial operating state, and to keep it below a threshold value in at least one continuous operating state. The tension adjustment unit 18 has at least one tension adjustment element (not shown here) for adjusting the tension value. In this case, the voltage adjustment element is made as a connection regulator. As an alternative, the voltage adjustment element can be made as an electric voltage regulator, as a potentiometer and / or as an electrical resistor.
    The adaptation unit 16 also has a detection unit 22. The detection unit 22 is disposed between the voltage adjustment unit 18 and the bootstrap unit 14 and between the voltage adjustment unit 18 and the first drive driver. switch 10, and is electrically disposed between the voltage adjustment unit 18 and the bootstrap diode 29. The detection unit 22 is provided to detect the switch exciter parameter. In particular, the detection unit 22 is provided to detect the electrical input current 26 of the first switch driver unit 10. The detection unit 22 has at least one detection element 24. The detection element 24 is arranged between the voltage adjustment unit 18 and the first switch exciter unit 10. The detection unit 22 is electrically conductively connected to the voltage adjustment unit 18. The detection element 24 is provided to detect the exciter parameter Switch In particular, the detection element 24 is provided to detect the electrical input current 26 of the first switch driver unit 10. The detection element 24 is made as a current sensor, as an inductive component, and as a current transformer. The detection element 24 detects in the current transformer the magnetic flux generated by a current. The detection element 24 detects a magnetic flux generated by the input current 26. Alternatively, a detection element can also be made as a measuring diode, measuring coil and / or as an electrical measuring resistor.
    image10
    In an initial operating state, the start-up of the home appliance device takes place by a soft start. During soft start, the connection units 12, 13 are connected during an initial process directly after switching on the home appliance with a high connection frequency, where the control unit 5 gradually reduces the connection frequency. The high connection frequency requires a particularly fast load of the bootstrap capacitor 28. The adaptation unit 16 is intended to increase the supply voltage 56. The voltage adjustment unit 18 is intended to increase the supply voltage 56. The voltage supply 56 causes an input current 26 of the first driver unit of 10 switch 10. The input current 26 is detected by the detection unit 22. The detection unit 22 supplies a signal correlated with the input current 26 detected for the voltage adjustment unit 18. The voltage adjustment unit 18 adjusts a higher value of the supply voltage 56, increases the supply voltage 56 of the first switch exciter unit 10. The detection unit 22 15 detects a new input current 26, correlated with the highest value of the supply voltage 56, and causes, ta l and as described, that the voltage adjustment unit 18 adjusts another higher value of the supply voltage 56. The increase in the supply voltage 56 of the first switch exciter unit 10 causes the bootstrap capacitor load 28 be fast. The rapid charging of the 20 bootstrap 28 condenser makes the initial process improve, and advantageously reduces the generation of noise. The high connection frequency of the first switch exciter unit 10 causes a high current consumption of the first switch exciter unit 10. The high current consumption causes a high input current 26 of the switch exciter unit 10. Thanks to reduction of the connection frequency during soft start-up, the connection frequency of the first exciter unit
    of switch 10 is reduced.
    During the first connection periods, the potential of the mains voltage V0 is
    superimposed with a leakage voltage, which occurs as a result of the
    dispersed inductances of the connection lines, in particular of the connection cables and / or 30 of the conductive tracks, after the first connection unit 12 is closed.
    bootstrap unit input 14 corresponds to the superposition of the potential of the
    mains voltage V0 and the voltage potential of the voltage supply unit 38. The
    bootstrap VBS voltage corresponds roughly or exactly to the envelope of the
    supply voltage 56 of the first switch exciter unit 10. Therefore, in comparison with the optimum supply voltage 56 of the first drive exciter unit of


    switch 10, the bootstrap VBS voltage is increased at least in the initial operating state and / or in the continuous operating state. The increased bootstrap VBS voltage causes a greater input current 26 of the first switch exciter unit 10 and a peak of the input current 26 of the first switch exciter unit 10. The peak of the input current 26 may cause a greater material stress, malfunction and / or destruction of the first switch exciter unit 10 and / or the first connection unit 12.
    In the continuous operating state, the supply voltage 56 of the first switch exciter unit 10 is adjusted by adapting the supply voltage 56 during initial operation (as described). Therefore, the supply voltage 56 has a high value. Consequently, also the input current 26 has a high value, which could cause current peaks. The high supply voltage 56 causes the input current 26 of the first switch exciter unit 10. The input current 26 is detected by the detection unit 22. The detection unit 22 supplies a signal correlated with the input current 26 detected for the voltage adjustment unit 18. The voltage adjustment unit 18 adjusts a lower value of the supply voltage 56, reduces the supply voltage 56 of the first switch exciter unit 10. The detection unit 22 detects a new input current 26, correlated with the lower value of the supply voltage 56, and causes, as described, that the voltage adjustment unit 18 adjusts another lower value of the supply voltage 56. The adaptation unit 16 causes the adaptation of the input current 26 and the supply voltage 56. The adaptation unit 16 is autonomous. In the initial operating state, the adaptation unit 16 is provided to keep the value of the supply voltage 56 below a threshold value. The voltage adjustment unit 18 is provided to keep the value of the supply voltage 56 below a threshold value in the continuous operating state. The threshold value may be predetermined by the supply voltage 56 of the voltage supply unit 38 and / or by a value of the predetermined voltage, which differs from it. Therefore, in the continuous operating state, the generation of current peaks is reduced, in particular, by adapting the supply voltage 56.
    Figure 3 shows the graph of an adaptation in an initial operating state. The ordinate axis 60 is configured as the y axis. The abscissa axis 62 is configured as the time axis. Curve 66 shows the evolution of the supply voltage 56.


    Another curve 67 shows the evolution of the input current 26. An additional curve 68 shows the evolution of an activation signal 64.
    The control unit 50 starts the soft start by means of the activation signal 64 at the initial time t0. The activation signal 64 causes a high connection frequency, whereby the current consumption of the first switch exciter unit 10 is directly at a maximum value. Therefore, the input current 26 is at a maximum value. The voltage adjustment unit 18 supplies a maximum supply voltage 56. The supply voltage 56 is at its maximum value at time t1. The bootstrap capacitor 28 of the bootstrap unit 14 is fully charged at time t1. Therefore, noise production is attenuated. The control unit 50 reduces the connection frequency, in particular, the frequency of the activation signal 64, so that the input current 26 of the first switch exciter unit 10 decreases. At time t2, the voltage adjustment unit 18 of the adaptation unit 16 again regulates the supply voltage 56 at 0 V, and the input current 26 is regulated in the working range of the heating unit 34 .
    Figure 4 shows the schematic graph of another adaptation in a state of continuous operation. The other adaptation can take place alternatively or additionally in the initial operating state. The ordinate axis 70 is configured as the y axis. The abscissa axis 72 is configured as the time axis. Curve 73 shows the evolution of the supply voltage 56. Another curve 74 shows the evolution of the input current 26. An additional curve 75 shows the evolution of an activation signal 64.
    The control unit 50 starts the soft start by means of the activation signal 64 at the initial time t0. The activation signal 64 causes a high connection frequency, whereby the current consumption of the first switch exciter unit 10 is directly at a maximum value. Therefore, the input current 26 is at a maximum value. The voltage adjustment unit 18 supplies a maximum supply voltage 56 at the soft start at the initial time t0. As a result of the overvoltages of the bootstrap unit 14, the input current 26 may have current peaks. The detection element 24 of the detection unit 22 detects the input current 26. The detection unit 22 sends to the voltage adjustment unit 18 a signal correlated with the input current 26. The voltage adjustment unit 18 reduces the supply voltage 56 to a minimum at the time t1 switch exciter 10 decreases. At time t2, the voltage adjustment unit 18 of the adaptation unit 16 again regulates the supply voltage 56 to a maximum value, and the input current 26 is regulated in the working range of the heating unit 34. In the working range, the supply voltage 56 remains at a maximum value.
    image11
    image12
    Reference symbols
    10 Switch exciter unit
    eleven Switch exciter unit
    12 Connection unit
    13 Connection unit
    14 Bootstrap unit
    16 Adaptation unit
    18 Tension adjustment unit
    twenty Main source of energy supply
    22 Detection unit
    24 Detection element
    26 Input current
    28 Bootstrap condenser
    29 Bootstrap diode
    30 Domestic appliance
    32 Cooking Field Plate
    3. 4 Heating unit
    36 Investor
    38 Voltage supply unit
    42 Connection element
    43 Connection element
    44 Central socket
    46 Resonance unit
    48 Excitation circuit
    fifty Control unit
    52 Driving path
    54 Reference potential
    56 Supply voltage
    60 Edge of ordered
    62 Abscissa shaft
    64 Activation signal
    66 Curve
    67 Curve
    68 Curve
    70 Edge of ordered


    72 Abscissa shaft
    73 Curve
    74 Curve
    75 Curve
    76 Freewheel diode
    77 Freewheel diode
    78 Snubber capacity
    79 Snubber capacity
    80 Rectifier
    V0 Mains voltage potential
    VBS  Bootstrap tension
    t0  Initial moment
    t1  Moment
    t2  Moment
    权利要求:
    Claims (6)
    [1]
    image 1
    1. Home appliance device, in particular, cooking appliance device, with at least one switch exciter unit (10), which is intended to feed at least one connection unit (12), and with a bootstrap unit (14),
    5 which is intended to supply at least one supply voltage (56) for the switch exciter unit (10), characterized by at least one adaptation unit (16), which is provided in at least one operating state for adapt the supply voltage (56) depending on at least one electrical switch exciter parameter of the switch exciter unit (10).
    10
    [2]
    2. Home appliance according to claim 1, characterized in that the connection unit (12) is configured as a high-side power connection unit.
    A household appliance device according to claims 1 or 2, characterized in that the adaptation unit (16) comprises a voltage adjustment unit (18), which is electrically connected between a voltage supply unit (38) and the bootstrap unit (14) and is intended to adapt the supply voltage (56).
    twenty
    [4]
    4. Household appliance according to claim 3, characterized in that the voltage adjustment unit (18) is provided to increase the supply voltage (56) in at least one initial operating state.
    A household appliance device according to claims 3 or 4, characterized in that the voltage adjustment unit (18) is provided to keep the supply voltage value (56) below a threshold value in at least one continuous operating status
    A household appliance device according to one of the preceding claims, characterized in that the adaptation unit (16) has a detection unit (22), which is intended to detect the switch exciter parameter.
    Device of household appliance according to at least claim 6, characterized in that the switch exciter parameter is an electrical input current
    twenty
    image2
    (26) of the switch exciter unit (10), and the detection unit (22) is provided to detect the electrical input current (26).
    [8]
    8. Household appliance according to claims 6 or 7, characterized in that the detection unit (22) has at least one detection element
    (24) performed as current sensor.
    [9]
    9. Domestic appliance (30), in particular, cooking appliance, with at least one
    home appliance device according to one of the preceding claims.
    [10]
    10. Procedure for putting into operation a household appliance device according to one of claims 1 to 8, which comprises at least one switch driver unit (10), which is intended to feed at least
    15 a connection unit (12), and a bootstrap unit (14), which is intended to supply at least one supply voltage (56) for the switch driver unit (10), characterized in that, in at least one state In operation, the supply voltage (56) is adapted depending on at least one electrical switch exciter parameter of the switch exciter unit (10).
    twenty-one
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    同族专利:
    公开号 | 公开日
    WO2018178789A1|2018-10-04|
    ES2684417B1|2019-07-24|
    EP3603334A1|2020-02-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20050007076A1|2003-07-10|2005-01-13|International Rectifier Corp.|Bootstrap capacitor charge circuit with limited charge current|
    WO2011029194A1|2009-09-10|2011-03-17|E Craftsmen And Associates Limited|Bootstrap startup and assist circuit|
    ES2564890A1|2014-09-24|2016-03-29|BSH Electrodomésticos España S.A.|Device of domestic appliance and procedure for the start-up of a device of domestic appliance |
    KR102037311B1|2013-01-02|2019-11-26|엘지전자 주식회사|Induction heat cooking apparatus and method for controlling of output level the same|
    法律状态:
    2018-10-02| BA2A| Patent application published|Ref document number: 2684417 Country of ref document: ES Kind code of ref document: A1 Effective date: 20181002 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201730509A|ES2684417B1|2017-03-30|2017-03-30|Home appliance device and procedure for putting into operation a home appliance device|ES201730509A| ES2684417B1|2017-03-30|2017-03-30|Home appliance device and procedure for putting into operation a home appliance device|
    EP18718200.1A| EP3603334A1|2017-03-30|2018-03-12|Domestic appliance device and method for operating a domestic appliance device|
    PCT/IB2018/051621| WO2018178789A1|2017-03-30|2018-03-12|Domestic appliance device and method for operating a domestic appliance device|
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