Power supply circuit, control method and device of electrical equipment and electrical equipment

Abstract

The invention discloses a power supply circuit, a control method and device of electrical equipment and the electrical equipment. The power supply circuit is provided with a zero line end and M live line ends, and comprises N inversion modules, N switch modules in one-to-one correspondence with the N inversion modules, and a control module. The inversion module is provided with a first power supply end and a second power supply end, and the first power supply end is connected to one of the M live wire ends. The switch module comprises a common end, a movable end, a first position end and a second position end; the common end is connected to the second power supply end of the inversion module corresponding to the switch module, the first position end is connected to the zero line end, and the second position end is connected to the other live line end of the M live line ends. The switch module can enable the power supply voltage of the inversion module to be switched between 220V and 380V under the control of the control module. And under the condition that the power supply voltage is 380V, the working power of the electrical equipment can be further improved, so that the cooking time of food can be shortened.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and more specifically, to a power supply circuit, a control method and device for electrical equipment, and electrical equipment. Background Art

[0002] In existing kitchen electrical appliances (eg, induction cookers), the maximum operating power of the kitchen electrical appliances is limited by the mains voltage.

[0003] After the working power of the kitchen electrical appliance reaches the rated working power determined based on the mains voltage, the working power cannot be further increased, resulting in that the cooking time of the food cannot be further shortened. Summary of the invention

[0004] The embodiments of the present application provide a power supply circuit, a control method and device for electrical equipment, and electrical equipment.

[0005] In a first aspect, some embodiments of the present application provide a power supply circuit, which is provided with a neutral terminal and M live terminals, where M is an integer greater than 1. The power supply circuit includes N inverter modules, N switch modules corresponding to the N inverter modules one by one, and a control module. Among them, the inverter module is provided with a first power supply terminal and a second power supply terminal, and the first power supply terminal is connected to one of the M live terminals, where N is an integer greater than 0. The switch module includes a common terminal, an active terminal, a first position terminal, and a second position terminal, and the active terminal is connected to the common terminal; the common terminal is connected to the second power supply terminal of the inverter module corresponding to the switch module, the first position terminal is connected to the neutral terminal, and the second position terminal is connected to another live terminal among the M live terminals. The control module is electrically connected to the N switch modules respectively.

[0006] On the second aspect, some embodiments of the present application also provide a control method for an electrical device, which includes the above-mentioned power supply circuit, the method comprising: obtaining a target operating mode of the electrical device; determining a target inverter module among N inverter modules; the target inverter module refers to an inverter module that needs to heat the pot placed on the electrical device; based on the target operating mode, controlling the switching state of the switch module connected to the target inverter module so that the operating power of the electrical device approaches the operating power corresponding to the target operating mode.

[0007] In a third aspect, some embodiments of the present application also provide a control device for an electrical device, the electrical device includes the above-mentioned power supply circuit, and the device includes an acquisition unit, a determination unit and a switch control unit. Among them, the acquisition unit is used to obtain the target operating mode of the electrical device. The determination unit is used to determine the target inverter module among N inverter modules; the target inverter module refers to the inverter module that needs to heat the pot placed on the electrical device. The switch control unit is used to control the switch state of the switch module connected to the target inverter module based on the target operating mode, so that the operating power of the electrical device approaches the operating power corresponding to the target operating mode.

[0008] In a fourth aspect, some embodiments of the present application further provide an electrical device, the electrical device comprising the above-mentioned power supply circuit, wherein the control module in the power supply circuit comprises one or more processors, a memory and one or more application programs. The one or more application programs are stored in the memory and configured to be executed by one or more processors, and are configured to execute the above-mentioned method.

[0009] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer program instructions, wherein the computer program instructions can be called by a processor to execute the above method.

[0010] In a sixth aspect, an embodiment of the present application further provides a computer program product, which implements the above method when executed.

[0011] The present application provides a power supply circuit, a control method and device for electrical equipment, and an electrical equipment. The power supply circuit is provided with a neutral terminal and M live terminals, and includes N inverter modules, N switch modules corresponding to the N inverter modules one by one, and a control module. Among them, the first power supply terminal of the inverter module is connected to a live terminal, the second power supply terminal of the inverter module is connected to the common terminal of the switch module, the first position terminal of the switch module is connected to the neutral terminal, and the second position terminal of the switch module is connected to the other live terminal. Therefore, under the control of the control module, the switch module can conduct the branch between the common terminal and the first position terminal. At this time, the inverter module is powered by a neutral wire and a live wire, and the power supply voltage is 220V. The switch module can also conduct the branch between the common terminal and the second position terminal. At this time, the inverter module is powered by two live wires, and the power supply voltage is 380V.

[0012] Therefore, under the control of the control module, the switch module switches the power supply voltage of the inverter module between 220V and 380V. Therefore, when the power supply voltage is switched from 220V to 380V, the working power of the electrical equipment is no longer limited by the mains power and can be further increased, thereby shortening the cooking time of food and meeting the user's demand for fast cooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a structural schematic diagram of an electrical device provided in an embodiment of the present application.

[0015] Figure 2 yes Figure 1 A structural diagram of the power supply circuit.

[0016] Figure 3 yes Figure 2 A specific structural diagram of the power supply circuit shown.

[0017] Figure 4 yes Figure 2 Another specific structural diagram of the power supply circuit shown.

[0018] Figure 5 yes Figure 1 Another structural schematic diagram of the power supply circuit.

[0019] Figure 6 yes Figure 1 Another structural schematic diagram of the power supply circuit.

[0020] Figure 7 It is a flowchart of a control method for electrical equipment provided in the first embodiment of the present application.

[0021] Figure 8 It is a flow chart of a control method of an electrical device provided in the second embodiment of the present application.

[0022] Fig. 9 It is a module block diagram of a control device for an electrical device provided in an embodiment of the present application.

[0023] Fig.10 It is a module block diagram of the electrical equipment provided in the embodiment of the present application.

[0024] Fig.11 It is a module block diagram of the computer-readable storage medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0026] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0027] The present application provides a power supply circuit, a control method and device for electrical equipment, and an electrical equipment. The power supply circuit is provided with a neutral terminal and M live terminals, and includes N inverter modules, N switch modules corresponding to the N inverter modules one by one, and a control module. Among them, the first power supply terminal of the inverter module is connected to a live terminal, the second power supply terminal of the inverter module is connected to the common terminal of the switch module, the first position terminal of the switch module is connected to the neutral terminal, and the second position terminal of the switch module is connected to the other live terminal. Under the control of the control module, the switch module can conduct the branch between the common terminal and the first position terminal. At this time, the inverter module is powered by a neutral wire and a live wire, and the power supply voltage is 220V. The switch module can also conduct the branch between the common terminal and the second position terminal. At this time, the inverter module is powered by two live wires, and the power supply voltage is 380V.

[0028] Therefore, under the control of the control module, the switch module in the present application switches the power supply voltage of the inverter module between 220 V and 380 V. Therefore, when the power supply voltage is switched from 220 V to 380 V, the working power of the electrical equipment is no longer limited by the limitation of the mains power and can be further improved, thereby shortening the cooking time of food and meeting the user's demand for fast cooking.

[0029] In order to facilitate the detailed description of the present application, the application environment of the present application embodiment is first introduced in conjunction with the accompanying drawings. Figure 1 The embodiment of the present application provides a power supply circuit 100 and an electrical device 200 equipped with the power supply circuit 100. The electrical device 200 is a device that heats a pot placed above the electrical device 200 based on electromagnetic induction phenomenon. For example, the electrical device 200 can be a full-zone multi-burner stove, an induction cooker, and the like.

[0030] In this embodiment, the electrical device 200 may include a housing 210, a function panel 230, and the above-mentioned power supply circuit 100. The function panel 230 is disposed on the outer surface of the housing 210, and is used to receive a user's control operation. The power supply circuit 100 is disposed inside the housing 210 and is electrically connected to the function panel 230, and then operates according to the control operation received by the function panel 230. For example, the above-mentioned control operation may include a start operation, a timing operation, a working mode selection operation, etc., wherein the working mode may include a rated power heating mode and an ultra-high power heating mode.

[0031] In some possible embodiments, the housing 210 may include a first housing portion (not shown in the figure) and a second housing portion (not shown in the figure), and the first housing portion and the second housing portion cover each other to form a receiving space for placing the power supply circuit 100, that is, the housing 210 plays a role in protecting and storing the power supply circuit 100. Among them, a fixing structure may be provided in the first housing portion, and the fixing structure is used to fix part of the structure of the power supply circuit 100. Specifically, the fixing structure includes but is not limited to structures such as a fixing groove, a clamp (for example, an elastic buckle). The outer surface of the second housing portion is provided with an installation groove, and the installation groove is used to install the functional panel 230.

[0032] The function panel 230 may be a touch screen, which may be provided with one or more virtual controls. The function panel 230 may also include one or more physical buttons, which, when triggered by a user's control operation, generate corresponding control signals to control the power supply circuit 100 to work.

[0033] In this embodiment, the power supply circuit 100 is suitable for being electrically connected to a working load (e.g., a coil disk) in the electrical device 200 and supplying power to the working load. The power supply circuit 100 may be provided with a neutral terminal N and M live terminals L, where M is an integer greater than 1, wherein the neutral terminal N is used to connect to the neutral wire in the mains, and the M live terminals L are used to connect to the live wires in the mains, respectively. Therefore, in this embodiment, the value of M may be 2 or 3.

[0034] See also Figure 2 The power supply circuit 100 may include N inverter modules 10, N switch modules 30 corresponding to the N inverter modules 10, and a control module 50, where N is an integer greater than 0. The inverter module 10 may be provided with a first power supply terminal 120 and a second power supply terminal 140, and the first power supply terminal 120 is connected to one live wire terminal L among the M live wire terminals L.

[0035] The switch module 30 may include a common terminal 320, an active terminal 340, a first position terminal 360 and a second position terminal 380, and the active terminal 340 is connected to the common terminal 320. The common terminal 320 is connected to the second power supply terminal 140 of the inverter module 10 corresponding to the switch module 30, the first position terminal 360 is connected to the neutral terminal N, and the second position terminal 380 is connected to another live terminal L among the M live terminals L. The control module 50 is electrically connected to the N switch modules 30 respectively. Specifically, the switch module 30 in this embodiment can conduct the branch between the common terminal 320 and the first position terminal 360 under the control of the control module 50. At this time, one neutral wire and one live wire are used to supply power to the inverter module 10, and the power supply voltage is 220V. The switch module 30 can also conduct the branch between the common terminal 320 and the second position terminal 380 under the control of the control module 50. At this time, two live wires are used to supply power to the inverter module 10, and the power supply voltage is 380V.

[0036] Therefore, the switch module 30 in this embodiment switches the power supply voltage of the inverter module 10 between 220 V and 380 V under the control of the control module 50. Therefore, when the power supply voltage is switched from 220 V to 380 V, the working power of the electrical equipment is no longer limited by the mains power and can be further improved, thereby shortening the cooking time of food and meeting the user's demand for fast cooking.

[0037] In this embodiment, the inverter module 10 is used to output an alternating current to a workload (e.g., a coil disk), so that the coil disk generates an alternating magnetic field, and then heats the pot placed in the alternating magnetic field. Among them, the inverter module 10 can be provided with a first power supply terminal 120 and a second power supply terminal 140, and the first power supply terminal 120 and the second power supply terminal 140 are respectively used to connect to the mains. Specifically, the inverter module 10 can be an inverter circuit (e.g., a single-phase half-bridge inverter circuit, a single-phase full-bridge inverter circuit, etc.), and this embodiment does not limit the specific implementation of the inverter module 10. Since the number of the inverter modules 10 in this embodiment is N, N can be 2, 3, 4, etc., therefore, multiple inverter modules 10 can output alternating current to multiple coil disks, so that the power supply circuit 100 in this embodiment can be applied to electrical equipment 200 (e.g., a multi-head stove, a full-zone stove, etc.) provided with a multi-wire disk.

[0038] In this embodiment, the switch module 30 is connected between the neutral and live wire terminals and the inverter module 10 in a one-to-one correspondence, and is used to switch the power supply voltage of the inverter module 10 to increase the working power of the inverter module 10. The switch module 30 may include a common terminal 320, an active terminal 340, a first position terminal 360, and a second position terminal 380, and the active terminal 340 is connected to the common terminal 320. When the active terminal 340 and the second position terminal 380 are connected, the branch between the common terminal 320 and the first position terminal 360 is conductive; when the active terminal 340 and the second position terminal 380 are connected, the branch between the common terminal 320 and the second position terminal 380 is conductive.

[0039] The common terminal 320 is connected to the second power supply terminal 140 of the inverter module 10 corresponding to the switch module 30, the first position terminal 360 is connected to the neutral terminal N, and the second position terminal 380 is connected to another live terminal L among the M live terminals L. That is, the live terminal L connected to the switch module 30 is different from the live terminal L connected to the corresponding inverter module 10. Specifically, the switch module 30 can be a relay switch, for example, a single-pole double-throw relay.

[0040] The specific connection method of the inverter module 10 and the switch module 30 is described below.

[0041] See also Figure 3 , the values ​​of M and N are both 2, the M live wire terminals L may include a first live wire terminal L1 and a second live wire terminal L2, the first live wire terminal L1 and the second live wire terminal L2 may be connected to any two live wires in the mains respectively. The N inverter modules 10 may include a first inverter module 102 and a second inverter module 104, and the N switch modules 30 may include a first switch module 302 and a second switch module 304.

[0042] The first power supply terminal 1021 of the first inverter module 102 is connected to the first live wire terminal L1, the second power supply terminal 1023 of the first inverter module 102 is connected to the common terminal 3021 of the first switch module 302, and the common terminal 3021 of the first switch module 302 is connected to the active terminal 3023 of the first switch module 302. The first position terminal 3025 of the first switch module 302 is connected to the neutral terminal N, and the second position terminal 3025 of the first switch module 302 is connected to the second live wire terminal L2.

[0043] Therefore, when the active end 3023 of the first switch module 302 is connected to the first position end 3025, a neutral line connected to the neutral line end N and a live line connected to the first live line end L1 supply power to the first inverter module 102. When the active end 3023 of the first switch module 302 is connected to the second position end 3027, two live lines respectively connected to the first live line end L1 and the second live line end L2 supply power to the first inverter module 102, thereby realizing the switching of the power supply voltage of the first inverter module 102 between 220V and 380V.

[0044] The first power supply terminal 1041 of the second inverter module 104 is connected to the second live wire terminal L2, the second power supply terminal 1043 of the second inverter module 104 is connected to the common terminal 3041 of the second switch module 304, and the common terminal 3041 of the second switch module 304 is connected to the active terminal 3043 of the second switch module 304. The first position terminal 3045 of the second switch module 304 is connected to the neutral terminal N, and the second position terminal 3047 of the second switch module 304 is connected to the first live wire terminal L1.

[0045] Therefore, when the active end 3043 of the second switch module 304 is connected to the first position end 3045, a neutral line connected to the neutral line end N and a live line connected to the second live line end L2 supply power to the second inverter module 104. When the active end 3043 of the second switch module 304 is connected to the second position end 3047, two live lines respectively connected to the first live line end L1 and the second live line end L2 supply power to the second inverter module 104, thereby realizing the switching of the power supply voltage of the second inverter module 104 between 220V and 380V.

[0046] See also Figure 4 , the value of M is 3 and the value of N is 2, the M live wire terminals L may include a third live wire terminal L3, a fourth live wire terminal L4 and a fifth live wire terminal L5, and the third live wire terminal L3, the fourth live wire terminal L4 and the fifth live wire terminal L5 may be connected to three live wires in the mains in a one-to-one correspondence. The N inverter modules 10 may include a third inverter module 106 and a fourth inverter module 108, and the N switch modules 30 may include a third switch module 306 and a fourth switch module 308.

[0047] The first power supply terminal 1061 of the third inverter module 106 is connected to the fourth live wire terminal L4, the second power supply terminal 1063 of the third inverter module 106 is connected to the common terminal 3061 of the third switch module 306, and the common terminal 3061 of the third switch module 306 is connected to the active terminal 3063 of the third switch module 306. The first position terminal 3065 of the third switch module 306 is connected to the neutral terminal N, and the second position terminal 3067 of the third switch module 306 is connected to the fifth live wire terminal L5.

[0048] Therefore, when the active end 3063 of the third switch module 306 is connected to the first position end 3065, a neutral line connected to the neutral line end N and a live line connected to the fourth live line end L4 supply power to the third inverter module 106. When the active end 3063 of the third switch module 306 is connected to the second position end 3067, two live lines respectively connected to the fourth live line end L4 and the fifth live line end L5 supply power to the third inverter module 106, thereby realizing the switching of the power supply voltage of the third inverter module 106 between 220V and 380V.

[0049] The first power supply terminal 1081 of the fourth inverter module 108 is connected to the third live wire terminal L3, the second power supply terminal 1083 of the fourth inverter module 108 is connected to the common terminal 3081 of the fourth switch module 308, and the common terminal 3081 of the fourth switch module 308 is connected to the active terminal 3083 of the fourth switch module 308. The first position terminal 3085 of the fourth switch module 308 is connected to the neutral terminal N, and the second position terminal 3087 of the fourth switch module 308 is connected to the fifth live wire terminal L5.

[0050] Therefore, when the active end 3083 of the fourth switch module 308 is connected to the first position end 3085, a neutral line connected to the neutral line end N and a live line connected to the third live line end L3 supply power to the fourth inverter module 108. When the active end 3083 of the fourth switch module 308 is connected to the second position end 3087, two live lines respectively connected to the third live line end L3 and the fifth live line end L5 supply power to the fourth inverter module 108, thereby realizing the switching of the power supply voltage of the fourth inverter module 108 between 220V and 380V.

[0051] The control module 50 is electrically connected to the N switch modules 30, respectively, and is used to control the working state of the switch module 30. In this embodiment, the control module 50 can control the switch module 30 to conduct the branch between the common terminal 320 and the first position terminal 360 or the branch between the common terminal 320 and the second position terminal 380, so as to switch the power supply voltage of the inverter module 10 connected to the switch module 30. Specifically, the control module 50 can be a control chip, an integrated circuit board, etc. The specific control process of the control module 50 is described in detail in the following method embodiment.

[0052] In some possible embodiments, see Figure 5The inverter module 10 may also be provided with a control terminal 160, the number of which may be two, which is used to input a drive pulse signal, and the drive pulse signal is used to instruct the inverter module to enter a working state. Specifically, the drive pulse signal may be a pair of complementary pulse width modulation (PWM) signals, and the PWM signal may cause the inverter circuit in the inverter module 10 to be in a complementary conduction state.

[0053] The control module 50 may include N control units 520 corresponding to the N inverter modules 10. The control unit 520 is connected to the control terminal 160 of the inverter module 10 and is used to output a driving pulse signal to the inverter module 10. Specifically, the control unit 520 may be a microcontroller unit (MCU).

[0054] The control module 50 in this embodiment can realize independent control of the inverter module 10 by setting N control units 520. Since the inverter modules 10 in this embodiment are connected to different live wires, independent control of the inverter modules 10 can avoid signal crosstalk between different inverter modules 10, thereby ensuring the normal operation of the inverter modules 10.

[0055] exist Figure 5 In the illustrated embodiment, the power supply circuit 100 may further include N power supply units 540 corresponding to the N control units 520, the power supply unit 540 being connected between the neutral and live wire terminals and the control unit 520, and being used to supply power to the control unit 520. The power supply unit 540 may be provided with a first input terminal 5410, a second input terminal 5430, and an output terminal 5450, the first input terminal 5410 being connected to the neutral wire terminal N, the second input terminal 5430 being connected to any one of the live wire terminals L among the M live wire terminals L, and the output terminal 5450 being connected to the control unit 520. Specifically, the power supply unit 540 may include a rectifier circuit and a step-down circuit (not shown in the figure). The rectifier circuit is provided with a first input terminal 5410 and a second input terminal 5430, which is used to rectify the input AC power into DC power. The step-down circuit is connected between the rectifier circuit and the control unit 520, which is used to step down the DC power and output the stepped-down DC power to the control unit 520 through the output terminal 5450, so that the voltage amplitude of the stepped-down DC power meets the power supply voltage of the control unit 520. For example, the power supply voltage of the control unit 520 may be 3V, 5V, etc. Specifically, the rectifier circuit may be a bridge rectifier circuit, and the step-down circuit may be a BUCK circuit. This embodiment does not limit the specific implementation of the power supply unit 540.

[0056] This embodiment adopts a method of using multiple power supply units 540 to supply power to multiple control units 520 respectively, which can avoid the situation where a single power supply unit 540 fails, while other power supply units 540 can still supply power to the control units 520 connected thereto, so that some inverter modules 10 can be in normal working state.

[0057] In some possible embodiments, see Figure 6 , the power supply circuit 100 may further include M zero-crossing detection modules 70, and the M zero-crossing detection modules 70 are connected between the M live wire terminals L and the control module 50 in a one-to-one correspondence. The zero-crossing detection module 70 is used to obtain the zero-crossing moment of the voltage at the live wire terminal L, and the control module 50 may control the corresponding switch module 30 to switch the position end near the zero-crossing moment to ensure the working safety of the switch module. Specifically, the zero-crossing detection module 70 may be a zero-crossing detection circuit using a voltage comparator, and the present embodiment does not limit the specific implementation of the zero-crossing detection module 70.

[0058] The control method applied to the above-mentioned electrical device 200 is introduced below.

[0059] See also Figure 7 , Figure 7 A control method for an electrical device provided in the first embodiment of the present application is schematically shown. Specifically, the method includes the following process.

[0060] Step S710, obtaining a target operating mode of the electrical device.

[0061] In this embodiment, the target working mode may include a first working mode and a second working mode, and the working power corresponding to the first working mode is less than the working power corresponding to the second working mode. For example, the first working mode may be a rated power heating mode, and the second working mode may be an ultra-high power heating mode. The working power corresponding to the rated power heating mode may be between 1800W and 2200W, and the working power corresponding to the ultra-high power heating mode may be between 2500W and 3200W.

[0062] As an implementation mode, the control module can determine the target operating mode of the electrical device based on the control signal sent by the function panel. For example, when the button corresponding to the rated power heating mode on the function panel is triggered by the user, the control module will receive the first control signal sent by the control panel, and then determine that the target operating mode of the electrical device is the first operating mode. When the button corresponding to the ultra-high power heating mode on the function panel is triggered by the user, the control module will receive the second control signal sent by the control panel, and then determine that the target operating mode of the electrical device is the second operating mode.

[0063] Step S720: determining a target inverter module among the N inverter modules.

[0064] In this embodiment, the target inverter module refers to an inverter module that needs to heat a cooker placed on the electrical device.

[0065] As an implementation mode, a pot detection circuit may be provided in the electrical device, and the pot detection circuit is electrically connected to the coil disk in the electrical device. When a pot is placed on the top of the coil disk, the inductance value of the coil disk will change, and the pot detection circuit may output detection signals of different frequencies based on the change in the inductance value of the coil disk. The control module may determine whether a pot is placed on the electrical device based on the detection signal, and then, if it is determined that a pot is placed, the coil disk with a changed inductance value is determined as the target coil disk, and the inverter module that provides alternating current to the target coil disk is determined as the target inverter module.

[0066] Step S730: Based on the target working mode, the switch state of the switch module connected to the target inverter module is controlled so that the working power of the electrical device approaches the working power corresponding to the target working mode.

[0067] In this embodiment, the control module can control the switching state of the switch module connected to the target inverter module so that the switch module turns on different branches, thereby making the second power supply end of the target inverter module switch between the neutral wire end and the live wire end to adjust the power supply voltage of the target inverter module, thereby achieving the adjustment of the working power of the electrical equipment.

[0068] Specifically, when the target operating mode is the first operating mode, the control module controls the switch module connected to the target inverter module to turn on the branch between the common end and the first position end, so that a live wire and a neutral wire supply power to the target inverter module. The input voltage of the target inverter module is 220V, so that the operating power of the electrical equipment approaches the operating power corresponding to the first operating mode (that is, the rated operating power).

[0069] When the target operating mode is the second operating mode, the control module controls the switch module connected to the target inverter module to turn on the branch between the common end and the second position end, so that the two live wires supply power to the target inverter module. The input voltage of the target inverter module is 380V, so that the operating power of the electrical equipment approaches the operating power corresponding to the second operating mode (that is, the super-large operating power).

[0070] An embodiment of the present application provides a control method for an electrical device. In this embodiment, different target operating modes correspond to different power supply voltages, and different power supply voltages correspond to different operating powers. Therefore, when the electrical device operates in an ultra-high power heating mode, the operating power of the electrical device is no longer limited by the limitation of the mains power and can be further improved, thereby shortening the cooking time of food and satisfying the user's demand for quick cooking.

[0071] See also Figure 8 , Figure 8 A control method for an electrical device provided in the second embodiment of the present application is schematically shown. In this embodiment, the power supply circuit includes M zero-crossing detection modules corresponding to M live wire terminals and N control units corresponding to N inverter modules. Specifically, the method includes the following process.

[0072] Step S810, obtaining a target operating mode of the electrical device.

[0073] Step S820: determining a target inverter module among the N inverter modules.

[0074] Step S830: Based on the target working mode, the switch state of the switch module connected to the target inverter module is controlled so that the working power of the electrical device approaches the working power corresponding to the target working mode.

[0075] The specific implementation of steps S810 to S830 can refer to the relevant introduction in steps S710 to S730, which will not be repeated here.

[0076] In this embodiment, after the control module controls the switching state of the switch module based on the target operating mode of the electrical device, if the operating mode of the electrical device changes, for example, the electrical device needs to switch from the ultra-high power heating mode to the rated power heating mode, or from the rated power heating mode to the ultra-high power heating mode, the control module is also configured to perform the following steps.

[0077] Step S840, in response to the mode switching indication, determining the target live terminal.

[0078] In this embodiment, the mode switching indication indicates that the target inverter module is switched between a first working mode and a second working mode, wherein the working power corresponding to the first working mode is less than the working power corresponding to the second working mode.

[0079] As an implementation mode, when the electrical device is in working state, if the control module receives the control signal sent by the function panel again, the target working mode of the electrical device is re-determined. If the target working mode is different from the current working mode of the electrical device, the control module generates a mode switching instruction; if the target working mode is the same as the current working mode of the electrical device, no mode switching instruction is generated.

[0080] As another implementation, the mode switching indication may also be generated by the function panel and sent to the control module. For example, a button corresponding to the mode switching may be provided on the function panel, and when the button is triggered by the user, a mode switching indication is generated and sent to the control module.

[0081] In this embodiment, the control module determines the target live wire terminal in response to the mode switching instruction, wherein the target live wire terminal refers to the live wire terminal connected to the switch module corresponding to the target inverter module.

[0082] As an implementation mode, a circuit connection relationship mapping table is pre-stored in the control module, and the mapping table represents the corresponding relationship between different inverter modules, different switch modules and different live wire terminals. Please refer to Table 1, which shows a circuit connection relationship mapping table corresponding to Figure 3 The circuit diagram shown.

[0083] Table-1

[0084] Inverter module Switch module The live wire terminal to which the switch module is connected The first inverter module First switch module The second live wire terminal L2 Second inverter module Second switch module The first live wire terminal L1

[0085] Exemplarily, when the target inverter module is the first inverter module, the control module can determine that the target live terminal is the second live terminal L2 by searching the circuit connection relationship mapping table.

[0086] Step S850, obtaining a detection signal of a zero-crossing detection module corresponding to the target live wire end.

[0087] In this embodiment, the detection signal can reflect the change of the input voltage at the target live wire end, so the control module can determine the zero-crossing moment of the input voltage according to the detection signal.

[0088] Specifically, the control module can obtain the detection signal of the zero-crossing detection module corresponding to the target live wire end at each preset time. The preset time can be a default value in the control module, or can be adjusted by the R&D personnel based on the actual working conditions of the electrical equipment. For example, the preset time can be 10ms, 15ms, etc.

[0089] Step S860: When the detection signal indicates that the absolute value of the voltage at the target live wire end is less than or equal to the specified voltage value, control the switch module corresponding to the target inverter module to switch from the current closed position end to another position end.

[0090] In this embodiment, the specified voltage value may be a default value in the control module, or may be adjusted by the R&D personnel based on the actual working conditions of the electrical equipment. For example, the specified voltage value may be a safe working voltage value of the switch module, so that the switch module can avoid arcing when switching, thereby ensuring the service life of the switch module. For example, the specified voltage value may be 1V, 0.5V, etc.

[0091] Here, taking the specified voltage value of 1V as an example, when the absolute value of the voltage at the target live wire end is greater than 1V, the detection signal can be a low-level signal. When the absolute value of the voltage at the target live wire end is less than or equal to 1V, the detection signal can be a high-level signal. At this time, it means that the input voltage at the target live wire end is at the zero-crossing moment.

[0092] Therefore, when the detection signal is a high-level signal, the control module can control the switch module corresponding to the target inverter module to switch from the current closed position end to another position end, thereby ensuring the safe use of the switch module.

[0093] In some possible embodiments, before controlling the switch module to switch the position end, the control module will first control the target inverter module to stop working, so as to avoid the target inverter module being affected when the power supply voltage suddenly changes, thereby ensuring the working safety of the target inverter module. Specifically, step S855 may be included before step S860.

[0094] Step S855, stop outputting the driving pulse signal to the target inverter module.

[0095] In this embodiment, a control relationship mapping table is pre-stored in the control module, and the control relationship mapping table represents the corresponding relationship between different control units and different inverter modules. The control module can determine the control unit corresponding to the target inverter module based on the control relationship mapping table, and then control the control unit to stop outputting the drive pulse signal to the target inverter module, so that the target inverter module stops working, so as to ensure the working safety of the target inverter module.

[0096] It should be noted here that step S855 can be directly executed when the control module responds to the mode switching indication, that is, the control module does not execute the steps of determining the target live wire end and obtaining the detection signal of the zero-crossing detection module corresponding to the target live wire end, but after executing step S855, it directly controls the switch module corresponding to the target inverter module to switch from the current closed position end to another position end.

[0097] The embodiment of the present application provides a control method for an electrical device. On the one hand, the control module switches the position end of the switch module at the zero-crossing point of the voltage, which can ensure the working safety of the switch module. On the other hand, before switching the position end of the switch module, the target inverter module is controlled to stop working, which can ensure the working safety of the target inverter module.

[0098] See also Fig. 9 , Fig. 9 A control device 900 for an electrical device provided in an embodiment of the present application is schematically shown, and the device 900 may include an acquisition unit 910, a determination unit 920, and a switch control unit 930. Among them, the acquisition unit 910 is used to obtain the target operating mode of the electrical device. The determination unit 920 is used to determine the target inverter module among N inverter modules; the target inverter module refers to the inverter module that needs to heat the pot placed on the electrical device. The switch control unit 930 is used to control the switching state of the switch module connected to the target inverter module based on the target operating mode, so that the operating power of the electrical device approaches the operating power corresponding to the target operating mode.

[0099] In some possible embodiments, the switch control unit 930 is specifically used to control the switch module connected to the target inverter module among the N inverter modules to turn on the branch between the common terminal and the first position terminal when the target operating mode is the first operating mode; and to control the switch module connected to the target inverter module among the N inverter modules to turn on the branch between the common terminal and the second position terminal when the target operating mode is the second operating mode; the operating power corresponding to the first operating mode is less than the operating power corresponding to the second operating mode.

[0100] In some possible embodiments, the device 900 may also include a live wire end determination unit (not shown in the figure), a signal acquisition unit (not shown in the figure) and a switching unit (not shown in the figure). The live wire end determination unit is used to determine the target live wire end in response to a mode switching indication; the mode switching indication indicates that the target inverter module switches between the first working mode and the second working mode; the working power corresponding to the first working mode is less than the working power corresponding to the second working mode; the target live wire end refers to the live wire end connected to the switch module corresponding to the target inverter module. The signal acquisition unit is used to obtain the detection signal of the zero-crossing detection module corresponding to the target live wire end. The switching unit is used to control the switch module corresponding to the target inverter module to switch from the current closed position end to another position end when the detection signal indicates that the absolute value of the voltage of the target live wire end is less than or equal to the specified voltage value.

[0101] In some possible embodiments, the device 900 may further include a signal control unit (not shown in the figure). When the detection signal indicates that the absolute value of the voltage at the target live wire end is less than or equal to the specified voltage value, the switching unit controls the switch module corresponding to the target inverter module to switch from the current closed position end to another position end, and the signal control unit is used to stop outputting the drive pulse signal to the target inverter module.

[0102] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and modules can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0103] In several embodiments provided in the present application, the coupling between modules may be electrical, mechanical or other forms of coupling.

[0104] In addition, each functional module in each embodiment of the present application can be integrated into a control module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software functional modules.

[0105] An embodiment of the present application provides a control device for an electrical device. Since in this embodiment, different target operating modes correspond to different power supply voltages, and different power supply voltages correspond to different operating powers, when the electrical device operates in the second operating mode (i.e., the ultra-high power heating mode), the operating power of the electrical device is no longer limited by the limitation of the mains power and can be further improved, thereby shortening the cooking time of food and satisfying the user's demand for quick cooking.

[0106] See also Fig.10 , Fig.10 It is schematically shown that an embodiment of the present application further provides an electrical device 1000, which includes the above-mentioned power supply circuit 1010. The specific implementation method of the power supply circuit 1010 can refer to the relevant introduction in the above application environment embodiment, and will not be repeated here.

[0107] The control module in the power supply circuit 1010 may include one or more processors 1011, a memory 1012, and one or more applications. The one or more applications are stored in the memory 1012 and configured to be executed by the one or more processors 1011, and the one or more applications are configured to execute the methods described in the above embodiments.

[0108] The processor 1011 may include one or more processing cores. The processor 1011 uses various interfaces and lines to connect various parts of the entire battery management system, and executes various functions and processes data of the battery management system by running or executing instructions, programs, code sets or instruction sets stored in the memory 1012, and calling data stored in the memory 1012. Optionally, the processor 1011 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 1011 can integrate one or more combinations of a central processing unit 1011 (Central Processing Unit, CPU), an image processor 1011 (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing display content; and the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 1011, and may be implemented separately through a communication chip.

[0109] The memory 1012 may include a random access memory 1012 (Random Access Memory, RAM), and may also include a read-only memory 1012 (Read-Only Memory, ROM). The memory 1012 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 1012 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (e.g., a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the various method embodiments described above, etc. The data storage area may also store data created by the electronic device during use (e.g., a phone book, audio and video data, chat record data), etc.

[0110] See also Fig.11 , Fig.11 It is schematically shown that an embodiment of the present application further provides a computer-readable storage medium 1100, in which computer program instructions 1110 are stored. The computer program instructions 1110 can be called by a processor to execute the method described in the above embodiment.

[0111] The computer-readable storage medium 1100 may be, for example, a flash memory, an electrically erasable programmable read-only memory (EEPROM), an electrically programmable read-only memory (EPROM), a hard disk, or a read-only memory (ROM). Optionally, the computer-readable storage medium includes a non-transitory computer-readable storage medium. The computer-readable storage medium 1100 has storage space for computer program instructions 1110 for executing any method steps in the above method. These computer program instructions 1110 can be read from one or more computer program products or can be written into one or more computer program products.

[0112] The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technical personnel in the field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A power supply circuit, characterized in that: A neutral terminal and M live terminals are provided, where M is an integer greater than 1; the power supply circuit comprises: N inverter modules, each of which is provided with a first power supply end and a second power supply end, the first power supply end is connected to one live wire end of the M live wire ends, and N is an integer greater than 0; N switch modules corresponding to the N inverter modules one by one, the switch modules comprising a common terminal, an active terminal, a first position terminal, and a second position terminal, the active terminal being connected to the common terminal; the common terminal being connected to the second power supply terminal of the inverter module corresponding to the switch module, the first position terminal being connected to the neutral terminal, and the second position terminal being connected to another live terminal of the M live terminals; and The control module is electrically connected to the N switch modules respectively.

2. The power supply circuit according to claim 1, characterized in that: The M live wire terminals include a first live wire terminal and a second live wire terminal, the N inverter modules include a first inverter module and a second inverter module, and the N switch modules include a first switch module and a second switch module; The first power supply end of the first inverter module is connected to the first live wire end, and the second power supply end of the first inverter module is connected to the common end of the first switch module; The first position end of the first switch module is connected to the neutral line end, and the second position end of the first switch module is connected to the second live line end; The first power supply end of the second inverter module is connected to the second live wire end, and the second power supply end of the second inverter module is connected to the common end of the second switch module; The first position end of the second switch module is connected to the neutral line end, and the second position end of the second switch module is connected to the first live line end.

3. The power supply circuit according to claim 1, characterized in that: The M live wire terminals include a third live wire terminal, a fourth live wire terminal and a fifth live wire terminal, the N inverter modules include a third inverter module and a fourth inverter module, and the N switch modules include a third switch module and a fourth switch module; The first power supply end of the third inverter module is connected to the fourth live wire end, and the second power supply end of the third inverter module is connected to the common end of the third switch module; The first position end of the third switch module is connected to the neutral line end, and the second position end of the third switch module is connected to the fifth live line end; The first power supply end of the fourth inverter module is connected to the third live wire end, and the second power supply end of the fourth inverter module is connected to the common end of the fourth switch module; The first position end of the fourth switch module is connected to the neutral line end, and the second position end of the fourth switch module is connected to the fifth live line end.

4. The power supply circuit according to any one of claims 1 to 3, characterized in that: The power supply circuit further includes M zero-crossing detection modules, and the M zero-crossing detection modules are connected between the M live wire terminals and the control module in a one-to-one correspondence.

5. The power supply circuit according to any one of claims 1 to 3, characterized in that: The inverter module is also provided with a control end; the control module includes N control units corresponding one to one to the N inverter modules; the control unit is connected to the control end of the inverter module, and is used to output a drive pulse signal to the inverter module, and the drive pulse signal is used to instruct the inverter module to enter a working state.

6. The power supply circuit according to claim 5, characterized in that: The power supply circuit also includes N power supply units corresponding one-to-one to the N control units; The power supply unit is provided with a first input terminal, a second input terminal and an output terminal, the first input terminal is connected to the neutral terminal, the second input terminal is connected to any one of the M live terminals, and the output terminal is connected to the control unit.

7. A control method for an electrical device, characterized in that: The electrical device comprises a power supply circuit as claimed in any one of claims 1 to 6, and the method comprises: Obtaining a target operating mode of the electrical device; Determine a target inverter module among the N inverter modules; the target inverter module refers to an inverter module that needs to heat a pot placed on the electrical device; Based on the target working mode, the switch state of the switch module connected to the target inverter module is controlled so that the working power of the electrical equipment approaches the working power corresponding to the target working mode.

8. The method according to claim 7, characterized in that The controlling the switch state of the switch module connected to the target inverter module based on the target working mode includes: When the target operating mode is the first operating mode, controlling the switch module connected to the target inverter module among the N inverter modules to switch on a branch between the common terminal and the first position terminal; When the target operating mode is the second operating mode, the switch module connected to the target inverter module among the N inverter modules is controlled to turn on the branch between the common end and the second position end; the operating power corresponding to the first operating mode is less than the operating power corresponding to the second operating mode.

9. The method according to claim 7, characterized in that: The method further comprises: In response to a mode switching indication, a target live wire end is determined; the mode switching indication indicates that the target inverter module is switched between a first working mode and a second working mode; the working power corresponding to the first working mode is less than the working power corresponding to the second working mode; the target live wire end refers to the live wire end connected to the switch module corresponding to the target inverter module; Obtaining a detection signal of a zero-crossing detection module corresponding to the target live wire end; When the detection signal indicates that the absolute value of the voltage at the target live wire end is less than or equal to a specified voltage value, the switch module corresponding to the target inverter module is controlled to switch from a currently closed position end to another position end.

10. The method according to claim 9, characterized in that In the case where the detection signal indicates that the absolute value of the voltage at the target live wire end is less than or equal to the specified voltage value, before controlling the switch module corresponding to the target inverter module to switch from the current closed position end to another position end, the method further includes: Stop outputting the drive pulse signal to the target inverter module.

11. A control device for an electrical device, characterized in that: The electrical equipment comprises a power supply circuit as claimed in any one of claims 1 to 6, and the device comprises: An acquisition unit, used for acquiring a target operating mode of the electrical device; A determination unit, used to determine a target inverter module among the N inverter modules; the target inverter module refers to an inverter module that needs to heat the pot placed on the electrical device; A switch control unit is used to control the switch state of the switch module connected to the target inverter module based on the target working mode, so that the working power of the electrical equipment approaches the working power corresponding to the target working mode.

12. An electrical device, characterized in that: The power supply circuit comprises the power supply circuit according to any one of claims 1 to 6, wherein the control module in the power supply circuit comprises: one or more processors; Memory; and One or more applications, wherein one or more of the applications are stored in the memory and configured to be executed by one or more of the processors, and configured to execute the method according to any one of claims 7 to 10.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and the computer program instructions can be called by a processor to execute the method according to any one of claims 7 to 10.

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