• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a domestic appliance device, in particular, to an induction cooking field device, with a connection unit (12; 12a-12e) and with an excitation circuit (14; 14a-14e) which it comprises a bootstrap unit (16; 16a-16e) and that is provided for adjusting the control voltage for the connection unit (12; 12a-12e). In order to improve the connection behavior, it is proposed that the bootstrap unit (16; 16a-16e) comprises an adaptation unit (18; 18a-18e) that is intended to modify one or more parameters of the bootstrap unit (16; 16a - 16e). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2564890A1
    申请号:ES201431393
    申请日:2014-09-24
    公开日:2016-03-29
    发明作者:Daniel Antón Falcón；Diego Puyal Puente；Carlos Calvo Mestre；Óscar GARCÍA-IZQUIERDO GANGO；Julio LAFUENTE URETA
    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 invention refers to a home appliance device with a connection unit and with an excitation circuit comprising a bootstrap unit and which is intended to adjust the control voltage for the connection unit.
    Induction cooking fields are known from the state of the art comprising an inverter with two connection units, as well as an excitation circuit with one unit
    10 bootstrap, where the control voltage of at least one of the connection units is adjusted through the bootstrap unit.
    The invention solves the technical problem of providing a generic household appliance device with better properties in terms of its connection behavior.
    The invention refers to a household appliance device, in particular, to a
    15 induction cooking field device, with a connection unit and with an excitation circuit comprising a bootstrap unit and which is intended to adjust and / or supply the control voltage for the connection unit, where the bootstrap unit comprises an adaptation unit that is intended to modify and / or preferably adapt, in particular, dynamically, one or more parameters, preferably
    20 electronics, from the bootstrap unit. 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, of more preferably, of an induction cooking field. The home appliance device may also comprise the entire home appliance, in particular,
    The entire cooking apparatus, preferably, the entire cooking field and, more preferably, the entire induction cooking field. In addition, the home appliance device may comprise a control unit, an inverter and / or one or more heating elements, in particular, one or more inductors. The inverter is preferably provided to supply and / or generate an oscillating electric current, preferably with
    30 a frequency of at least 1 kHz, more preferably at least 10 kHz and, advantageously, at least 20 kHz, to drive the heating elements. Advantageously, the inverter comprises the connection unit. He
    image2
    The term “intended” includes the concept of programmed, conceived and / or specifically provided. 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. The term "connection unit 5" includes the concept of a unit, preferably electronic, which comprises a connection element and is intended to interrupt a conduction path comprising at least a part of the connection unit. Here, the connection element is preferably made as a power switch, and is intended to periodically connect a current of at least 0.5 A, preferably, at least 4 A and, more preferably, 10 A As minimum. Advantageously, the connection unit is a bi-directional unipolar connection unit and comprises a control input and a reference voltage terminal, where a connection state of the connection unit is controllable by the control voltage existing between the terminal Control and voltage reference terminal. The reference voltage terminal can be found here in a floating potential. The connection element of the connection unit can be realized as any connection element, preferably semiconductor connection element, that is appropriate to a person skilled in the art, for example, as a transistor, preferably, as FET (field-effect). transistor), as MOSFET (metalloxide-semiconductor field-effect transistor) and / or as IGBT (Insulated Gate Bipolar 20 Transistor). A connection unit may also comprise several control inputs, reference voltage terminals and / or connection elements. The term "conduction path" includes the concept of an element that at least temporarily establishes an electrically conductive connection between two or more points and / or two or more components. The term "floating potential" includes the concept of a potential that modifies the value of its potential, preferably periodically, in 10 V or more, advantageously in 50 V or more, preferably in 75 V or more and , more preferably, in 100 V or more. The excitation circuit preferably has an actuation stage. The term "drive stage" includes the concept of an electronic unit, which comprises a drive input, a drive output 30 and / or, preferably, two supply voltage terminals, and which is intended to intensify a signal. of the voltage and / or potential, applied at the drive input, of the control unit, in the at least one operating state, specifically in an operating state in which a voltage applied to the two voltage terminals of supply exceeds a limit value of at least 8 V, preferably at least 10 V, and 35 for supply to the control terminal of the connection unit. The drive stage can also have several drive inputs, outputs of
    image3
    drive and / or more than two supply voltage terminals. The term “bootstrap unit” includes the concept of a unit that comprises a bootstrap capacity, and which is intended to generate and / or provide a bootstrap voltage and supply it to the two supply voltage terminals, whereby it can be addressed from preferred way the connection status of the connection unit. The bootstrap voltage corresponds here to the supply voltage of the drive stage, applied to the two supply voltage terminals. Preferably, the bootstrap unit further comprises a bootstrap resistor and / or one or more bootstrap diodes. The term “bootstrap capacity” includes the concept of a unit that comprises at least one capacity and, advantageously, at least two capacities, and which is intended to store energy, specifically, bootstrap voltage, to feed the stage drive. Advantageously, the capacity (s) are realized here as capacitors. The term "bootstrap resistor" includes the concept of a unit comprising at least one resistive component and, advantageously, at least two resistive components, and which is intended to limit the current flowing to the bootstrap capacity and / or through of the bootstrap diode (s). The term "adapt" includes the concept of optimizing and / or adjusting to an advantageous operation. A home appliance device may also comprise several connection units, excitation circuits and / or inverters, and the excitation circuit may comprise several actuation stages and / or several bootstrap units.
    By this embodiment, it is possible to provide a generic household appliance device with better properties in terms of its connection behavior, in particular, a rapid reaction time of the connection unit can be achieved, thereby improving control and / or the efficiency of the home appliance device. It is also possible to advantageously increase the safety of operation and / or the operating time of the home appliance device, since the negative influences produced by the dispersion impedances on the drive stage and / or the unit of operation can be effectively reduced. Connection. Also, the costs can be kept low advantageously.
    If the adaptation unit is intended to modify and / or, preferably, adapt, the
    or the parameters depending on a bootstrap voltage, in particular, the bootstrap voltage, preferably the voltage applied to the two supply voltage terminals, advantageously simple control can be achieved.
    image4
    Likewise, it is proposed that the parameter (s) correspond to a constant of the load time of the bootstrap unit. The term "load time constant" includes the concept of a load time of the bootstrap capacity and / or a time duration after which the bootstrap capacity has a voltage value and / or an effective voltage value that
    5 corresponds to at least 63% of a maximum tension value and / or a maximum value of the effective tension of the bootstrap capacity. In this way, an economical and advantageously simple adaptation of the bootstrap unit to different operating states can be achieved.
    Preferably, the parameter (s) present at least in a state of
    10 start operation a value between 10-9 s and 10-5 s and, preferably, between 108 s and 10-6 s. The term "start operating state" includes the concept of an operating state that begins directly after the home appliance device is started and / or after selecting an operating program and / or after a change of operating program. Bootstrap capability is completely downloaded here
    15 at the beginning of the initial operating state, in particular, for a longer time span of at least 1 ms, advantageously, at least 0.5 s, preferably, at least 1 s and, in a manner more preferred, at least 5 s. In the initial operating state, a maximum voltage value, stored in bootstrap capacity, and / or an effective voltage value and / or a maximum bootstrap voltage is
    20 modify and / or increase at least between two connection processes of the connection unit and, preferably, between all connection processes of the connection unit. In this way, a rapid reaction behavior of the home appliance device can be achieved.
    It is also proposed that the parameter (s) present at least in a state of
    25 continuous operation a value between 10-7 s and 10-3 s and, preferably, between 106 s and 10-4 s. The term "continuous operating state" includes the concept of an operating state that follows, preferably directly, the initial operating state. In the continuous operating state, a maximum voltage value, stored in bootstrap capacity, and / or an effective voltage value and / or a maximum bootstrap voltage
    30 are approximately or totally constant between at least two connection unit connection processes and, preferably, between all connection unit connection processes. The term "approximate or totally constant" includes the concept of a modification at a maximum of 5%, preferably at a maximum of 2% and, more preferably, a maximum of 1%. In this way, it is possible to get a
    The advantageous filtering effect, in particular, the filtering of a supply voltage and / or of the bootstrap voltage, can thus effectively minimize possible leakage currents and / or leakage voltages caused by dispersion impedances.
    image5
    The parameters could be determined, for example, by the inductance value of the bootstrap unit. However, the parameters preferably correspond to the value of the capacity and / or the value of the effective capacity of the bootstrap unit. In this way, an adaptation of the bootstrap unit advantageously simple and without complications can take place.
    Alternatively and / or additionally, it is proposed that the parameter (s) correspond to the resistance value and / or the effective resistance value of the bootstrap unit. Thus, it is possible to increase the flexibility of the home appliance device.
    In an embodiment of the invention, it is proposed that the adaptation unit comprises two or more capacitors or two or more resistive components, which are connected in parallel in at least one operating state, in particular in the operating state Startup and / or in the continuous operating state. Thus, a simple type of construction can be achieved.
    Likewise, it is proposed that the adaptation unit comprises two or more capacitors or two or more resistive components, which are connected in series in at least one operating state, in particular, in the starting operating state and / or in the continuous operating status In this way, the home appliance device can be flexibly adapted to different requirements.
    If the adaptation unit comprises a bridging connection element, which is intended to bridge and / or bypass one or more components, in particular, one
    or several capacitors and / or one or several resistive components, of the bootstrap unit in at least one operating state, in particular, in the starting operating state and / or in the continuous operating state, the parameters can be adapted from advantageously simple way and during operation of the household appliance device. The bridging connection element can be made here as any connection element, preferably, semiconductor connection element, that is appropriate to a person skilled in the art, for example, as a transistor, preferably, as FET, as MOSFET and / or as IGBT. The adaptation unit may also have several bridging connection elements, preferably carried out identically.


    The adaptation unit and / or the bridging connection element could be directed, for example, by a control signal from the control unit. However, it is preferred that the adaptation unit and / or the bridging connection element direct themselves. The fact that an object “directs itself” includes the concept that the object modifies in at least one state of operation its state, specifically, its state of connection, automatically and / or mechanically, depending of the instantaneous voltage value and / or current value of the excitation circuit and / or the bootstrap unit. The adaptation unit and / or the bridging connection element do not have a direct connection with the control unit. In this way, advantageously simple, economical, and safe control can be achieved.
    Likewise, a procedure is proposed for putting into operation a household appliance device, in particular, an induction cooking device, with a connection unit and with an excitation circuit comprising a bootstrap unit and by means of the which adjusts the control voltage for the connection unit, where one or more parameters are modified, preferably, a load time constant, advantageously, the capacity value and / or the resistance value, of the bootstrap unit, depending on the bootstrap tension. In this way it is possible to improve the connection behavior, being able to reduce the reaction time and increase the operating time.
    Other advantages are taken from the following description of the drawing. Examples of embodiment of the invention are shown in the drawing. The drawing, description and claims contain numerous features in combination. The person skilled in the art will consider the characteristics advantageously also separately, and will gather them in other reasonable combinations.
    They show:
    Fig. 1 a domestic appliance made as an induction cooking field
    with a home appliance device, in top view
    schematic,
    Fig. 2 a diagram of the simplified circuit of the device device
    domestic with an excitation circuit that features a unit
    bootstrap,
    Fig. 3 a schematic graph of different signals to direct the home appliance device,


    Fig. 4 a concrete embodiment of a bootstrap unit of another home appliance device with two capacitors connected in series at least in an operating state,
    Fig. 5 a concrete embodiment of another bootstrap unit of another home appliance 5 with two capacitors connected in parallel at least in an operating state,
    Fig. 6 a concrete embodiment of another bootstrap unit of another home appliance device with two resistive components connected in parallel at least in an operating state,
    Fig. 7 a concrete embodiment of another bootstrap unit of another home appliance device with two resistive components connected in series in at least one operating state, and Fig. 8 a concrete embodiment of another bootstrap unit of another home appliance device.
    fifteen
    Figure 1 shows by way of example a domestic appliance 32, made as an induction cooking field, in schematic top view. In the present case, the domestic appliance 32 has a cooking field plate with four heating zones 34, each of which is intended to heat exactly one battery element.
    20 cooking (not shown). Also, the household appliance 32 comprises a household appliance device, which comprises a control unit 36 for directing the operation of the household appliance 32. The control unit 36 has a calculation unit, a storage unit, and an operating program. , stored in the storage unit, which is intended to be executed by the calculation unit.
    25 Figure 2 shows a simplified circuit diagram of the household appliance device. On the other hand, specific embodiments of household appliances are shown in Figures 4 to 8. The home appliance device has a heating unit 38, which may comprise several inductors (not shown). In addition, the heating unit 38 may comprise a connection arrangement (not
    30 represented) to drive the inductors alternately and / or together, for example, in a time division multiplexing process. To supply the heating unit 38, the home appliance device comprises a main power source 40. Also, the home appliance device comprises an inverter 42, which comprises two connection units 10, 12 that are identical to each other. Each of
    The connection units 10, 12 comprise a control input and a connection element. The connection elements are made as IGBTs. In addition, each of the connection units 10, 12 comprises a freewheeling diode and a snubber capability, which are connected in parallel to the connection elements. As an alternative, it is also conceived that a household appliance device has several
    image6
    5 inverters, or at least one inverter has several connection units.
    A first terminal of the main power source 40 is here electrically conductively connected to a transmitter terminal of a first connection unit 10 of the connection units 10, 12 and / or of the connection element of the first connection unit 10, and a second terminal of the main power source 40 is electrically conductively connected to a collector terminal of a second connection unit 12 of the connection units 10, 12 and / or of the connection element of the second connection unit 12. The inverter 42 is intended to transform a pulsed rectified mains voltage of the main energy source 40 into a high frequency heating current, and supply it to the heating unit 38. The
    15 heating unit 38 is arranged here on a bridge branch between a central outlet 44 of the inverter 42 and a resonance unit 46.
    In addition, the home appliance device comprises an excitation circuit 14, which is intended to adjust the control voltage for the connection units 10, 12. For this, the excitation circuit 14 comprises a secondary source of energy 48, the which 20 has a voltage between 10 V and 25 V. In the present case, a first terminal of the secondary power source 48 is electrically conductively connected to the first terminal of the main power source 40 through a first conduction path 54. Also, the excitation circuit 14 comprises two drive stages 50, 52, which are identical to each other. As an alternative, the use of different drive stages is also conceived. As an example, it can only be used where galvanic isolation (optical, magnetic or capacitive) is necessary, or a discrete implementation can be carried out or by means of an integrated circuit of the drive stage. If only high-side galvanic isolation and a compact implementation of the entire assembly are required, the drive stages 30 50, 52 are performed as high-voltage integrated circuits. Each of the drive stages 50, 52 has a drive input and a drive output, as well as two supply voltage terminals. The first drive stage 50 of the drive stages 50, 52 is provided to drive the first connection unit 10, and the second drive stage 52 of the drive stages 50, 52 is provided to drive the


    second connection unit 12. To this end, each of the inputs of the drive stages 50, 52 is electrically conductively connected to the control unit 36. Each of the outputs of the drive stages 50, 52 is connected electrically conductive with the control inputs of the connection units 10, 12. The excitation circuit 14 also has a reserve capacitor 56, which is made as an energy store and has a capacity with a value sufficiently greater than the capacity bootstrap stage maximum. Sufficiently greater means at least 4 times greater, or advantageously 10 times greater. Typically a value between 100 nF and 47 uF. The reserve capacitor 56 is provided to supply a constant supply voltage to a large extent for the first drive stage 50. For this, a first terminal of the reserve capacitor 56 is electrically conductively connected to the first terminal of the secondary power source 48 via the first conduction path 54. Likewise, the first terminal of the reserve capacitor 56 is electrically conductively connected to a first supply voltage terminal of the first actuation stage 50 through the first conduction path 54 In addition, the first terminal of the reserve capacitor 56 is electrically conductively connected to the emitter terminal of the first connection unit 10 through the first conduction path 54. Accordingly, the first conduction path 54 serves as the terminal reference voltage for the first connection unit 10. The first way of Driving 54 is at a fixed potential. A second terminal of the reserve capacitor 56 is electrically conductively connected to a second terminal of the secondary power source 48, as well as to a second supply voltage terminal of the first drive stage 50.
    Also, the excitation circuit 14 comprises a bootstrap unit 16, which comprises a bootstrap diode 58 and a bootstrap capacity 60, made as an energy store. Bootstrap capacity 60 has an effective capacity with a value between 33 nF and 3.3 µF, and a voltage dependent capacity value. In addition, the bootstrap unit 16 comprises a bootstrap resistor 62, which is intended to limit the current flowing to the bootstrap capacity 60 and through the bootstrap diode.
    58. Bootstrap 62 resistor has an effective resistance with a value between 0.5 Ω and 50 Ω, and a voltage dependent resistance value. As an alternative, it is conceived to dispense with a bootstrap resistor. In addition, the bootstrap resistor or bootstrap capacity may also depend on the voltage.
    5
    10
    fifteen
    twenty
    25
    30
    35


    The bootstrap diode 58 is electrically conductively connected to an anode terminal with the second terminal of the secondary power source 48 and, with a cathode terminal, to a first bootstrap resistor terminal 62. A second bootstrap resistor terminal 62 it is electrically conductively connected to a first terminal of the bootstrap capacity 60 and to a first supply voltage terminal of the second drive stage 52. A second terminal of the bootstrap capacity 60 is electrically conductively connected to the central socket 44 via a second conduction path 64. Accordingly, bootstrap capacity 60 is electrically conductively connected to a collector terminal of the first connection unit 10 and / or of the connection element 10 of the first connection unit 10 and with a transmitter terminal of the second connection unit 12 and / or the connection element of the signal Second connection unit 12. Likewise, the bootstrap capacity 60 is electrically conductively connected to a second supply voltage terminal of the second actuation stage 52 through the second conduction path 64. The second conduction path 64 serves of the reference voltage terminal for the second connection unit 12, and is in a floating potential. In a state of operation in which the connection units 10, 12 are alternately connected, the second conduction path 64 is alternately in a reference potential of the first conduction path 54 and in a potential of the mains voltage V0. Bootstrap capacity 60 is provided to supply a bootstrap VBS voltage, which corresponds here to the supply voltage of the second drive stage 52 and is applied in at least one operating state to the supply voltage terminals of the second drive stage 52.
    In the present case, the drive stages 50, 52 are further provided with a protective device for low voltage disconnection (UVLO, undervoltage lock-out). As a consequence, the drive stages 50, 52 are not operational if the supply voltage that is applied to the supply voltage terminals is below a limit value. In the present case, the limit value is between 9 V and 16 V. Therefore, the drive stages 50, 52 are provided to intensify a voltage signal, applied to the drive input, of the control unit 36 , in an operating state in which a voltage applied to the supply voltage terminals exceeds the limit value.
    Figure 3 shows a schematic graph of different signals for directing the home appliance device in a start-up operation state and in a continuous operation state that follows the start-up operation state. The axis of
    5
    10
    fifteen
    twenty
    25
    30
    35


    ordinates 68 is represented as y-axis, and time is represented on the abscissa axis 66. The axis of abscissa 66 presents two temporary sections with an interruption, where a first temporary section represents a state of beginning operation, and a second temporary section, later in time, represents a state of continuous operation. Curve 70 illustrates the connection states of the connection element of the first connection unit 10, and curve 72 illustrates the connection states of the connection element of the second connection unit 12. A "0" level here defines a state non-conducting. Curve 74 shows the voltage potential of the network V0 of the main power source 40. In the present case, the voltage potential of the network V0 is superimposed on a leakage voltage VLEAK. Curve 76 shows the leakage voltage VLEAK, which can occur here as a result of dispersion inductances of connection lines, in particular, of connection cables and / or conductive tracks, after closing the connection unit 12. Also, the curve 78 shows an input voltage of bootstrap unit 16, while curve 80 represents bootstrap voltage VBS. The input voltage of the bootstrap unit 16 corresponds here to the superposition of the voltage potential of the network V0 and the voltage potential of the secondary power source 48. The bootstrap voltage VBS corresponds at least approximately to the envelope of the input voltage and, in particular, with the supply voltage of the second drive stage 52. Curve 81 defines an optimum supply voltage of the second drive stage 52, set by instructions made by the manufacturer. As a result, the bootstrap VBS voltage is higher compared to the optimum supply voltage of the second drive stage 52, at least in the initial operating state, which can lead to destruction and / or malfunction. of the second drive stage 52. According to the invention, the bootstrap VBS voltage corresponds in the continuous operating state with the optimum supply voltage of the second drive stage 52 at least approximately, thus being able to advantageously counteract the destruction and / or the malfunction of the second drive stage 52.
    In an operating state, the connection units 10, 12 are alternately connected, whereby, at least a first moment, the first connection unit 10 is open and the second connection unit 12 is closed and, in at least a second moment, other than the first moment, the first connection unit 10 is closed and the second connection unit 12 is open. Here, the reserve capacitor 56 and bootstrap capacity 60 are charged and discharged alternately. The reserve capacitor 56 is discharged during an activation of the first unit of


    connection 10, and is charged during an activation of the second connection unit 12, while bootstrap capacity 60 is discharged during an activation of the second connection unit 12, and is charged during an activation of the first connection unit 10 a through the bootstrap 58 diode and through the bootstrap 62 resistor.
    In the present case, the bootstrap unit 16 further comprises an adaptation unit 18, which is intended to modify a parameter of the bootstrap unit 16 depending on the bootstrap VBS voltage. The parameter is determined here by a constant of the load time τ of the bootstrap capacity 60, which is obtained through:
    τ = RBoot · CBoot (1)
    The variable RBoot corresponds here to the value of the resistance of the bootstrap resistor 62, while the variable CBoot corresponds to the value of the capacity of the bootstrap capacity 60.
    In the present case, the adaptation unit 18 is provided to adapt the resistance value of the bootstrap resistor 62 and the value of the capacity of the bootstrap capacity 60 dynamically, in particular, during operation of the household appliance device. As an alternative, it is also conceived that the resistance value of a bootstrap resistor or the capacity value of a bootstrap capacity is dynamically adapted.
    In the present case, the parameter has a value between 1 · 10-8 s and 1 · 10-6s in the initial operating state. If the bootstrap voltage VBS exceeds a limit value of approximately 12 V, the adaptation unit 18 is then provided to modify a parameter value, for example, switching between two or more resistive elements of the bootstrap resistor 62 and / or between two or more Bootstrap 60 capacitors. In a continuous operating state, the parameter has a value of greater magnitude than in the initial operating state, specifically between 1 · 10-6 s and 1 · 10-4 s. In this way, a fast response behavior of the second connection unit 12 can be achieved in the starting operating state, since the bootstrap capacity 60 already reaches a limit value of the voltage necessary to put a first pulse of connection the second actuation stage 52 is in operation. On the other hand, in the continuous operating state an advantageous filtering effect can be achieved by increasing the load time constant τ. Bootstrap capacity 60 and bootstrap resistor 62 correspond to a low pass filter. In the continuous operating state, the voltage peaks of the supply voltage of the second drive stage 52 due to the leakage voltage VLEAK can be filtered, adapting the


    adaptation unit 18 the load time constant τ of the bootstrap unit 16. In this way, destruction and / or reduction of the operating time of the second drive stage 52 can be avoided as a result of excessive operating voltage . However, as an alternative, it is also conceived that an additional filtering unit is provided in a household device, for example between a secondary power source and a bootstrap unit, which is bridged and / or bridged in an operating state Of start.
    Figures 4 to 8 show specific examples of the bootstrap unit
    16. The following description and drawing are essentially limited to the differences between the basic example and the concrete embodiments, where, in relation to components indicated in the same way, in particular, in terms of components with the same reference symbols, It is also possible to refer basically to the drawing and / or to the description of the basic example of Figures 1 to 3. For the differentiation of the examples of embodiment, the letters "a" to "e" have been postponed to the reference symbols in the concrete examples of realization.
    The letter "a" is postponed to the reference symbols of the exemplary embodiment of Figure 4. In Figure 4, a first concrete embodiment example of a bootstrap unit 16a of another household appliance device, shown only partially, is shown.
    In the present case, a bootstrap resistor 62a is composed of a single resistive component 24a, which has a resistance with a fixed value of 15 Ω. A bootstrap capacity 60a comprises two capacitors 20a, 22a, where a first capacitor 20a of the capacitors 20a, 22a has a capacity with a value of 2.2 µF, and a second capacitor 22a of the capacitors 20a, 22a has a capacity with a 68 nF value. In addition, the bootstrap capacity 60a comprises an adaptation unit 18a, which has a bridging connection element 28a with a diode 82a connected in parallel. The bridging connection element 28a is made as channel MOSFET n. Also, the adaptation unit 18a comprises a Zener diode 84a, which is made as a blocking element, and is intended to block the bridging connection element 28a below a voltage limit value of approximately 12 V. The unit of adaptation 18a also comprises a resistor 86a, which sets the operating point of the bridging connection element 28a.
    A first terminal of the first capacitor 20a is electrically conductively connected to a first supply voltage terminal of a second drive stage, with a cathode terminal of the Zener diode 84a, and with the bootstrap resistor 62a. A second terminal of the first capacitor 20a is electrically conductively connected to a drain terminal of the bridging connection element 28a and to a first terminal of the second capacitor 22a. Accordingly, the capacitors 20a, 22a are connected in series, and the first terminal of the second capacitor 22a is also electrically conductively connected to the drain terminal of the bridging connection element 28a. In addition, a second terminal of the second capacitor 22a is electrically conductively connected to a second supply voltage terminal of the second actuation stage 52a, with a source terminal of the bridging connection element 28a, and with a second terminal of the resistor 86a.
    image7
    An anode terminal of the Zener diode 84a is further electrically conductively connected to a base terminal of the bridging connection element 28a and to a first resistor terminal 86a.
    In an initial operating state, the value of the capacity of the bootstrap capacity 60a is given by the value of the effective capacity of the capacities of the two capacitors 20a, 22a. In the present case, the value of the effective capacity amounts to approximately 66 nF in the initial operating state, and a constant of the load time τ of the bootstrap unit 16a amounts to approximately 1 µs. Above the limit value of the voltage, the Zener diode 84a reaches its passage band, so that the bridging connection element 28a enters the driving state. Therefore, the adaptation unit 18a addresses itself, and is not connected to the control unit 36a. However, as an alternative it is also conceived that the adaptation unit is directed by a signal from a control unit. In the continuous operating state, the bridging connection element 28a is provided to bridge a component 30a, in the present case, the second capacitor 22a. Accordingly, the value of the effective capacity amounts to 2.2 µF in the continuous operating state, and the load time constant τ of the bootstrap unit 16a amounts to approximately 33 µs.
    In Figure 5, another embodiment of the invention is shown. The letter "b" is postponed to the reference symbols of the embodiment example of Figure 5. The embodiment example of Figure 5 differs from the previous embodiments in a bootstrap unit 16b.
    A bootstrap capacity 60b comprises two capacitors 20b, 22b, which in the present case are connected in parallel.


    A first terminal of the first capacitor 20b is electrically conductively connected to a first supply voltage terminal of a second drive stage 52b and to a cathode terminal of a Zener diode 84b. In addition, the first terminal of the first capacitor 20b is connected to a bootstrap resistor 62b and to a first terminal of the second capacitor 22b. A second terminal of the first capacitor 20b is electrically conductively connected to a drain terminal of a bridging connection element 28b. The first terminal of the second capacitor 22b is also electrically conductively connected to the first supply voltage terminal of the second drive stage 52b. A second terminal of the second capacitor 22b is electrically conductively connected to a second supply voltage terminal of the second drive stage 52b, with a source terminal of the bridging connection element 28b, and with a first terminal of a resistor 86b.
    In an initial operating state, the value of the capacity of the bootstrap capacity 60b is given by the value of the capacity of the second capacitor 22b, and the bridging connection element 28b is provided to bridge the first capacitor 20b. The capacity value is 68 nF in the initial operating state. Above the limit value of the voltage, the Zener diode 84b reaches its pass band, so that the bridging connection element 28b enters the driving state. In this state of continuous operation, the value of the capacity of the bootstrap capacity 60b is given by the value of the effective capacity of the capacities of the two capacitors 20b, 22b. In a continuous operating state, the value of the effective capacity amounts to approximately 2.3 µF, and a constant of the load time τ of the bootstrap unit 16b amounts to approximately 34 µs.
    In Figure 6, another embodiment of the invention is shown. The letter "c" is postponed to the reference symbols of the embodiment example of Figure 6. The embodiment example of Figure 6 differs from the previous embodiments in a bootstrap unit 16c.
    In the present case, a bootstrap capacity 60c is composed of a single capacitor 20c, and a bootstrap resistor 62c comprises two resistive components 24c, 26c that are connected in parallel. In the present case, a bridging connection element 28c is provided to bridge a first resistive component 24c of the resistive components 24c, 26c in a continuous mode of operation.


    In Figure 7, another embodiment of the invention is shown. The letter "d" is postponed to the reference symbols of the embodiment example of Figure 7. The embodiment example of Figure 7 differs from the previous embodiments in a bootstrap unit 16d.
    5 A bootstrap resistor 62d comprises two resistive components 24d, 26d that are connected in series. A bridging connection element 28d is provided to bridge a second resistive component 26d of the resistive components 24d, 26d in a start-up mode of operation.
    In Figure 8, another embodiment of the invention is shown. The letter "e" appears
    10 postponed to the reference symbols of the exemplary embodiment of Figure 8. The exemplary embodiment of Figure 8 differs from the previous exemplary embodiments in a bootstrap unit 16e.
    Figure 8 shows a cascaded bootstrap 60e capacity, which is basically composed of n bootstrap 60b capacities of Figure 5, connected one behind the other, 15 where the first capacitors 20e1-20en, the Zener diodes 84e1-84en, and the resistors 86e1 - 86en have values that vary in such a way that a constant of the charging time τ increases continuously at least during a start-up operating state. Alternatively, it is conceived to provide a bootstrap cascade resistor. It is also conceived to combine a cascading bootstrap capacity with a
    20 bootstrap cascade resistor and / or with a bootstrap resistor of figures 6 and / or 7. In addition, the combination of a cascaded bootstrap resistor with a bootstrap capacity of figures 4 and / or 5 is conceived.


    Reference symbols
    Connection unit
    12 Connection unit
    14 Excitation circuit
    16 Bootstrap unit
    18 Adaptation unit
    Condenser
    22 Condenser
    24 Resistive component
    26 Resistive component
    28 Bridging connection element
    Component
    32 Domestic appliance
    3. 4 Heating zones
    36 Control unit
    38 Heating unit
    Main source of energy
    42 Investor
    44 Central socket
    46 Resonance unit
    48 Secondary power source
    Drive stage
    52 Drive stage
    54 Driving path
    56 Reserve condenser
    58 Bootstrap diode
    Bootstrap capacity
    62 Bootstrap resistor
    64 Driving path
    66 Abscissa shaft
    68 Edge of ordered
    Curve
    72 Curve
    74 Curve
    76 Curve
    image8
    78 Curve
    80 Curve
    81 Curve
    82 Diode
    84 Zener diode
    86 Resistor
    CBoot  Variable
    RBoot  Variable
    τ Charge time constant
    VBS  Bootstrap tension
    V0 Potential of network voltage
    VLeak Leakage voltage
    权利要求:
    Claims (8)
    [1]
    image 1
    1. Home appliance device, namely, induction cooking device, with a connection unit (12; 12a - 12e) and with an excitation circuit (14; 14a - 14e) comprising a bootstrap unit (16 ; 16a - 16e) and
    5 which is intended to adjust the control voltage for the connection unit (12; 12a - 12e), characterized in that the bootstrap unit (16; 16a - 16e) comprises an adaptation unit (18; 18a - 18e) which is provided to modify one or more bootstrap unit parameters (16; 16a - 16e).
    A household appliance device according to claim 1, characterized in that the adaptation unit (18; 18a - 18e) is provided to modify the parameter (s) depending on a bootstrap voltage (VBS).
    [3]
    3. Home appliance device according to claim 1 or 2, characterized
    15 because the parameter (s) correspond to a load time constant τ of the bootstrap unit (16; 16a - 16e).
    [4]
    4. Household appliance according to claim 3, characterized in that the
    or the parameters have at least in a starting operating state a value between 10-9 s and 10-5 s.
    [5]
    5. Home appliance device according to claim 3, characterized in that the
    or the parameters have at least 10-7 s and 10-3 s in a continuous operating state.
    25
    [6]
    6. Home appliance device according to one of the preceding claims, characterized in that the parameter (s) correspond to the capacity value of the bootstrap unit (16; 16a; 16b; 16e).
    7. A household appliance device according to one of the preceding claims, characterized in that the parameter (s) correspond to the resistance value of the bootstrap unit (16; 16c; 16d).
    [8]
    8. Home appliance device according to one of the claims set forth
    35, characterized in that the adaptation unit (18b; 18c; 18e) comprises two or more capacitors (20b, 22b; 20e, 22e) or two or more
    twenty
    image2
    resistive components (24c, 26c), which are connected in parallel in at least one operating state.
    [9]
    9. Household appliance according to one of the claims set forth
    5, characterized in that the adaptation unit (18a; 18d) comprises two or more capacitors (20a, 22a) or two or more resistive components (24d, 26d), which are connected in series in at least one operating state.
    10. A household appliance device according to one of the preceding claims, characterized in that the adaptation unit (18a-18e) comprises a bridging connection element (28a-28e), which is intended to bridge one or more components ( 30a - 30e) of the bootstrap unit (16a - 16e) in at least one operating state.
    fifteen
    [11]
    11. Domestic appliance (32), in particular, induction cooking range, with one or more domestic appliance devices according to one of the claims set forth above.
    twenty-one
    类似技术:
    公开号 | 公开日 | 专利标题
    US10003249B2|2018-06-19|Insulated gate semiconductor device including switchable insulated gate semiconductor element
    CN103038992B|2015-09-30|With the switching power circuit of defencive function
    RU2654533C2|2018-05-21|Direct current switching device
    ES2564890A1|2016-03-29|Device of domestic appliance and procedure for the start-up of a device of domestic appliance |
    WO2010050072A1|2010-05-06|Ac voltage control device
    KR100469502B1|2005-03-16|Switching control of an operating circuit
    CN109600030B|2021-03-23|Bus capacitor discharging method, system and device for power device
    Gonthier et al.2005|EN55015 compliant 500 W dimmer with low-losses symmetrical switches
    JP2005019333A|2005-01-20|Phase control device
    JP2022511040A|2022-01-28|Battery heating system
    RU2641479C2|2018-01-17|Protection circuit for semiconductor switching element and power conversion device
    ES2673132B1|2019-03-28|Induction cooking appliance device.
    JP5920032B2|2016-05-18|Light control device
    EP3146800B1|2020-11-18|A phase control dimmer circuit
    JPWO2017064848A1|2018-06-21|Power converter and power conditioner using the same
    CN110011529B|2021-02-02|Operation control method, device, circuit, household appliance and computer storage medium
    GB2508129A|2014-05-28|Semiconductor device driving unit with switchable gate impedance circuits
    CN107484284B|2020-07-28|Electromagnetic oven
    KR102349362B1|2022-01-11|Power converting apparatus
    JP2013247723A|2013-12-09|Induction heating power source device
    Sarnago et al.2013|Series resonant inverter with active snubber circuit for improved efficiency operation applied to domestic induction heating
    JP2021141631A|2021-09-16|Clamp circuit
    WO2013131596A1|2013-09-12|Control circuitry for controlling a semiconductor switch
    ES2684417B1|2019-07-24|Home appliance device and procedure for putting into operation a home appliance device
    CN210577769U|2020-05-19|Signal control circuit and protection circuit
    同族专利:
    公开号 | 公开日
    EP3001774B1|2017-06-21|
    ES2635645T3|2017-10-04|
    EP3001774A1|2016-03-30|
    ES2564890B1|2017-01-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102012102138A1|2011-03-14|2012-09-20|Benteler Automobiltechnik Gmbh|Charging circuit of four-quadrant type for charging electric energy storage device of vehicle electrical system with direct current voltage, has transistor, coupling capacitor and inductor for controlling charging current on generator side|
    EP2753147A2|2013-01-02|2014-07-09|LG Electronics Inc.|Induction heat cooking apparatus|ES2684417A1|2017-03-30|2018-10-02|Bsh Electrodomésticos España, S.A.|Device of domestic appliance and procedure for the start-up of a device of domestic appliance |JP5921377B2|2012-08-02|2016-05-24|三菱電機株式会社|Induction heating cooker|FR3061524B1|2017-01-03|2019-05-24|Vianney Rabhi|SYNCHRONIZED ROLLER WITH FREE WHEELS|
    KR20200053117A|2018-11-08|2020-05-18|엘지전자 주식회사|Induction heating device having negative voltage protection circuit|
    法律状态:
    2015-06-05| PC2A| Transfer of patent|Owner name: BSH HAUSGERATE GMBH Effective date: 20150529 |
    2017-01-04| FG2A| Definitive protection|Ref document number: 2564890 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170104 |
    2018-06-26| MH2A| Renunciation|Effective date: 20180620 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201431393A|ES2564890B1|2014-09-24|2014-09-24|Home appliance device and procedure for putting into operation a home appliance device|ES201431393A| ES2564890B1|2014-09-24|2014-09-24|Home appliance device and procedure for putting into operation a home appliance device|
    ES15184662.3T| ES2635645T3|2014-09-24|2015-09-10|Cooking appliance with a household appliance device and procedure for operating a cooking appliance with a household appliance device|
    EP15184662.3A| EP3001774B1|2014-09-24|2015-09-10|Domestic appliance and method for operating a domestic appliance|
    [返回顶部]