Household appliance motor control system, method and equipment and household appliance
The integration of a BLDC brushless direct current motor control system with a motor drive module on the main control circuit board addresses the size and cost issues of AC shaded-pole motors, enabling higher speeds and flexible design in household appliances.
Patent Information
- Application Number
- CN202411310989.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2024-12-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing household appliances using AC shaded-pole motors face limitations in achieving higher speeds without increasing size, which affects design costs and structural complexity, while direct use of BLDC brushless DC motors restricts design flexibility and increases costs.
A household appliance motor control system with a main control circuit board incorporating a BLDC brushless direct current motor, a motor drive module, and a switching power supply module, which integrates the motor drive module onto the main control circuit board to reduce size and cost, allowing higher ambient temperatures and improved chip utilization.
The integrated motor drive module reduces the size and cost of household appliances by eliminating the need for separate motor body design and enabling operation at higher temperatures, thus enhancing design flexibility and reducing structural constraints.
Smart Images
Figure CN119171779A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of motor control technology, and in particular, relates to household appliance motor control systems, methods, devices and household appliances. Background Art
[0002] At present, most household appliances on the market use AC shaded-pole motors. Shaded-pole motors are cheap, but they also have obvious disadvantages. The speed of shaded-pole motors is generally around 2,500 revolutions. If a higher speed is required, the size will be bloated, increasing the design cost of the structure. Therefore, the market began to design and use BLDC brushless DC motors. BLDC brushless DC motors have high speeds and small size. High speeds mean that food is heated more evenly and quickly. Small size means that the structural design of the entire machine can be reduced.
[0003] However, the inventors found in the process of realizing the present invention that directly using purchased BLDC brushless direct current motors limits the structure and appearance design of household appliances with motors such as air fryers, ovens, and wall breakers, which is not conducive to reducing costs and further reducing size. Summary of the invention
[0004] The embodiments of the present application provide a household appliance motor control system, method, device and household appliance to reduce the cost of the household appliance motor control system.
[0005] This application is implemented through the following technical solutions:
[0006] In a first aspect, an embodiment of the present application provides a household appliance motor control system, comprising: a main control circuit board and a BLDC brushless direct current motor body; the main control circuit board comprises: a main control chip, a motor drive module and a switching power supply module.
[0007] The switch power supply module is connected to the main control chip and is used to provide a DC voltage to the main control chip.
[0008] The main control chip is connected to the motor drive module and is used to output a control signal according to the received control instruction.
[0009] The motor drive module is connected to the BLDC brushless direct current motor body and is used to output a three-phase voltage to the BLDC brushless direct current motor body according to an output control signal.
[0010] In combination with the first aspect, in some possible implementations, the motor drive module includes: a U-end drive submodule, a V-end drive submodule, a W-end drive submodule and a connector; the connector is used to connect to the BLDC brushless direct current motor body.
[0011] The U-end driver submodule includes: a first capacitor, a first driver subchip, a first resistor, a second capacitor, and a second resistor.
[0012] The first end of the first capacitor is respectively connected to the ground terminal of the main control chip and the first interface of the first driver chip, the second end of the first capacitor is respectively connected to the second interface of the first driver chip and the first end of the first resistor, the second end of the first resistor is connected to the first LO port of the main control chip, the first end of the second capacitor is respectively connected to the DC 24V power supply and the third interface of the first driver chip, the second end of the second capacitor is respectively connected to the fourth interface of the first driver chip and the first end of the second resistor, the second end of the second resistor is connected to the first HO port of the main control chip, and the fifth interface, sixth interface, seventh interface and eighth interface of the first driver chip are all connected to the third interface of the connector.
[0013] The V-end driver submodule includes: a third capacitor, a second driver subchip, a third resistor, a fourth capacitor and a fourth resistor.
[0014] The first end of the third capacitor is respectively connected to the ground terminal of the main control chip and the first interface of the second driver chip, the second end of the third capacitor is respectively connected to the second interface of the second driver chip and the first end of the third resistor, the second end of the third resistor is connected to the second LO port of the main control chip, the first end of the fourth capacitor is respectively connected to the DC 24V power supply and the third interface of the second driver chip, the second end of the fourth capacitor is respectively connected to the fourth interface of the second driver chip and the first end of the fourth resistor, the second end of the fourth resistor is connected to the second HO port of the main control chip, and the fifth interface, sixth interface, seventh interface and eighth interface of the second driver chip are all connected to the second interface of the connector.
[0015] The W-end driver submodule includes: a fifth capacitor, a third driver subchip, a fifth resistor, a sixth capacitor, a sixth resistor and a seventh capacitor.
[0016] The first end of the fifth capacitor is respectively connected to the ground terminal of the main control chip and the first interface of the third driver chip, the second end of the fifth capacitor is respectively connected to the second interface of the third driver chip and the first end of the fifth resistor, the second end of the fifth resistor is connected to the third LO port of the main control chip, the first end of the sixth capacitor is respectively connected to the DC 24V power supply and the third interface of the third driver chip, the second end of the sixth capacitor is respectively connected to the fourth interface of the third driver chip and the first end of the sixth resistor, the second end of the sixth resistor is connected to the third HO port of the main control chip, and the fifth interface, sixth interface, seventh interface and eighth interface of the third driver chip are all connected to the first interface of the connector.
[0017] A first end of the seventh capacitor is connected to a DC 24V power supply, and a second end of the seventh capacitor is grounded.
[0018] In combination with the first aspect, in some possible implementations, the household appliance motor control system further includes: a display driving board.
[0019] The display driving board includes: a display chip, an LED display module, a touch key input module and a first communication module.
[0020] The LED display module is connected to the display chip and is used to display the working mode, working power and remaining working time of the household appliance.
[0021] The touch key input module is connected to the display chip and is used to change, turn on and off the working mode of the household appliance, and modify the working power of the household appliance.
[0022] The first communication module is connected to the display chip, and is used to send a control instruction to the main control chip after determining the working mode and working power of the household appliance.
[0023] The first communication module is also used to receive feedback information sent by the main control chip.
[0024] In combination with the first aspect, in some possible implementations, the household appliance motor control system also includes: a bulb driving circuit module, a bulb, a heating tube driving circuit module, a heating tube, an NTC voltage acquisition circuit, an NTC temperature sensor, a buzzer driving circuit module, a buzzer and a second communication module.
[0025] The bulb driving circuit module is connected to the main control chip and is used to drive the bulb to turn on or off.
[0026] The heating tube driving circuit module is connected to the main control chip and is used to drive the heating tube to start or stop working.
[0027] The NTC voltage acquisition circuit is connected to the main control chip to obtain the voltage generated by the NTC temperature sensor.
[0028] The buzzer drive circuit module is connected to the main control chip and is used to drive the buzzer to start or stop working.
[0029] The second communication module is connected to the main control chip and is used for communication connection with the first communication module.
[0030] In combination with the first aspect, in some possible implementations, the heating tube is a stainless steel heating tube or a far infrared heating tube.
[0031] In combination with the first aspect, in some possible implementations, the DC voltage output by the switching power supply module is 12V or 24V, and 5V.
[0032] In combination with the first aspect, in some possible implementations, the support frame of the BLDC brushless direct current motor body is made of plastic.
[0033] In a second aspect, an embodiment of the present application provides a household appliance motor control method, comprising:
[0034] Get control instructions.
[0035] Based on the control instruction, the voltages of the first HO port, the first LO port, the second HO port, the second LO port, the third HO port, and the third LO port are adjusted in sequence.
[0036] According to the voltages of the first HO port, the first LO port, the second HO port, the second LO port, the third HO port and the third LO port, a three-phase voltage is output to the BLDC brushless direct current motor body.
[0037] In a third aspect, an embodiment of the present application provides a terminal device, including: a processor and a memory, the memory is used to store a computer program, and when the processor executes the computer program, it implements the household appliance motor control method as described in the second aspect.
[0038] In a fourth aspect, an embodiment of the present application provides a household appliance, including: a household appliance motor control system as described in any one of the first aspects.
[0039] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.
[0040] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:
[0041] The present application sets the motor drive module of the BLDC brushless direct current motor body on the main control circuit board, which reduces the restrictions on the motor mounting support frame, thereby helping to reduce costs; and because the motor drive module of the BLDC brushless direct current motor body is set on the main control circuit board, the BLDC brushless direct current motor part does not need to be designed with the shape of the motor body for the circuit board, reducing the number of control chips used, thereby helping to further reduce costs. And the motor drive module of the BLDC brushless direct current motor body is set on the main control circuit board, which improves the utilization rate of the idle interface of the main control chip, so that the motor body can work at a higher ambient temperature (the traditional solution has a maximum operating temperature of 70 degrees Celsius, and the maximum operating temperature of this solution can reach more than 90 degrees Celsius); the motor drive module of the BLDC brushless direct current motor body is set on the main control circuit board, which is also conducive to reducing the size of the motor part, thereby reducing the size of the household appliance.
[0042] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0044] Figure 1 It is a structural schematic diagram of a household appliance motor control system provided by an embodiment of the present application;
[0045] Figure 2 is a circuit diagram of a motor drive module provided in an embodiment of the present application;
[0046] Figure 3 is a structural schematic diagram of a household appliance motor control system provided by another embodiment of the present application;
[0047] Figure 4 It is a flowchart of a household appliance motor control method provided by an embodiment of the present application;
[0048] Figure 5 It is a structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION
[0049] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.
[0050] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.
[0051] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0052] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.
[0053] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.
[0054] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.
[0055] The present application embodiment provides a household appliance motor control system, Figure 1 is a schematic diagram of the structure of a household appliance motor control system provided by an embodiment of the present application, referring to Figure 1 , the details of the household appliance motor control system are as follows:
[0056] A household appliance motor control system includes: a main control circuit board 10 and a BLDC brushless direct current motor body 11; the main control circuit board 10 includes: a main control chip 101, a motor drive module 102 and a switch power supply module 103.
[0057] The switch power supply module 103 is connected to the main control chip 101 and is used to provide a DC voltage to the main control chip 101 .
[0058] The main control chip 101 is connected to the motor driving module 102 and is used to output a control signal according to a received control instruction.
[0059] The motor driving module 102 is connected to the BLDC brushless direct current motor body 11 , and is used to output a three-phase voltage to the BLDC brushless direct current motor body 11 according to an output control signal.
[0060] In some specific embodiments, because the motor driving module 102 of the BLDC brushless direct current motor body 11 is disposed on the main control circuit board 10, the size of the motor part can be reduced.
[0061] For example, Figure 2 As shown, the motor driving module 102 includes: a U-end driving submodule 1021, a V-end driving submodule 1022, a W-end driving submodule 1023 and a connector 1024; the connector 1024 is used to connect to the BLDC brushless direct current motor body 11.
[0062] The U-end driver submodule includes: a first capacitor C1, a first driver subchip Q1, a first resistor R1, a second capacitor C2 and a second resistor R2.
[0063] The first end of the first capacitor C1 is respectively connected to the ground terminal PGND of the main control chip 101 and the first interface S1 of the first driver chip Q1, the second end of the first capacitor C1 is respectively connected to the second interface G1 of the first driver chip Q1 and the first end of the first resistor R1, the second end of the first resistor R1 is connected to the first LO port UN of the main control chip 101, the first end of the second capacitor C2 is respectively connected to the DC 24V power supply and the third interface S2 of the first driver chip Q1, the second end of the second capacitor C2 is respectively connected to the fourth interface G2 of the first driver chip Q1 and the first end of the second resistor R2, the second end of the second resistor R2 is connected to the first HO port UP of the main control chip 101, and the fifth interface D1, the sixth interface D1, the seventh interface D2 and the eighth interface D2 of the first driver chip Q1 are all connected to the third interface of the connector CN.
[0064] The V-end driver submodule includes: a third capacitor C3, a second driver subchip Q2, a third resistor R3, a fourth capacitor C4 and a fourth resistor R4.
[0065] The first end of the third capacitor C3 is respectively connected to the ground terminal PGND of the main control chip 101 and the first interface S1 of the second driver chip Q2, the second end of the third capacitor C3 is respectively connected to the second interface G1 of the second driver chip Q2 and the first end of the third resistor R3, the second end of the third resistor R3 is connected to the second LO port VN of the main control chip 101, the first end of the fourth capacitor C4 is respectively connected to the DC 24V power supply and the third interface S2 of the second driver chip Q2, the second end of the fourth capacitor C4 is respectively connected to the fourth interface G2 of the second driver chip Q2 and the first end of the fourth resistor R4, the second end of the fourth resistor R4 is connected to the second HO port VP of the main control chip 101, and the fifth interface D1, the sixth interface D1, the seventh interface D2 and the eighth interface D2 of the second driver chip Q2 are all connected to the second interface of the connector.
[0066] The W-end driver submodule includes: a fifth capacitor C5, a third driver subchip Q3, a fifth resistor R5, a sixth capacitor C6, a sixth resistor R6 and a seventh capacitor C7.
[0067] The first end of the fifth capacitor C5 is respectively connected to the ground terminal PGND of the main control chip 101 and the first interface S1 of the third driver sub-chip Q3, the second end of the fifth capacitor C5 is respectively connected to the second interface G1 of the third driver sub-chip Q3 and the first end of the fifth resistor R5, the second end of the fifth resistor R5 is connected to the third LO port WN of the main control chip 101, the first end of the sixth capacitor C6 is respectively connected to the DC 24V power supply and the third interface S2 of the third driver sub-chip Q3, the second end of the sixth capacitor C6 is respectively connected to the fourth interface G2 of the third driver sub-chip Q3 and the first end of the sixth resistor R6, the second end of the sixth resistor R6 is connected to the third HO port WP of the main control chip 101, and the fifth interface D1, the sixth interface D1, the seventh interface D2 and the eighth interface D2 of the third driver sub-chip Q3 are all connected to the first interface of the connector.
[0068] A first end of the seventh capacitor C7 is connected to a DC 24V power supply, and a second end of the seventh capacitor C7 is grounded.
[0069] Specifically, the first driver sub-chip Q1 , the second driver sub-chip Q2 , and the third driver sub-chip Q3 are all MOS management chips.
[0070] In some specific embodiments, the motor drive module 102 is arranged on the main control circuit board 10, so that the main control chip 101 and the motor drive module 102 work together to realize the control of the BLDC brushless direct current motor body 11, which can reduce the use of one control chip. In addition, it does not need to match the shape of the motor body, which is conducive to reducing costs.
[0071] For example, Figure 3 As shown, the household appliance motor control system further includes: a display driving board 12 .
[0072] The display driving board 12 includes: a display chip 121 , an LED display module 122 , a touch key input module 123 and a first communication module 124 .
[0073] The LED display module 122 is connected to the display chip 121 and is used to display the working mode, working power and remaining working time of the household appliance.
[0074] The touch key input module 123 is connected to the display chip 121 and is used to change, turn on and off the working mode of the household appliance, and modify the working power of the household appliance.
[0075] The first communication module 124 is connected to the display chip 121 and is used to send a control instruction to the main control chip after determining the working mode and working power of the household appliance.
[0076] The first communication module 124 is further used to receive feedback information sent by the main control chip 101 .
[0077] In some specific embodiments, in order to facilitate the control of the household appliance and change the working mode and working power of the household appliance, a display driver board is provided.
[0078] For example, Figure 3 As shown, the household appliance motor control system also includes: a bulb driving circuit module 104, a bulb 105, a heating tube driving circuit module 106, a heating tube 107, an NTC voltage acquisition circuit 108, an NTC temperature sensor 109, a buzzer driving circuit module 110, a buzzer 111 and a second communication module 112.
[0079] The bulb driving circuit module 104 is connected to the main control chip 101 and is used to drive the bulb 105 to turn on or off.
[0080] The heating tube driving circuit module 106 is connected to the main control chip 101 and is used to drive the heating tube 107 to start or stop working.
[0081] The NTC voltage acquisition circuit 108 is connected to the main control chip 101 and is used to obtain the voltage generated by the NTC temperature sensor 109 .
[0082] The buzzer driving circuit module 110 is connected to the main control chip 101 and is used to drive the buzzer 111 to start or stop working.
[0083] The second communication module 112 is connected to the main control chip 101 and is used for communication connection with the first communication module 124 .
[0084] Exemplarily, the heating tube 107 is a stainless steel heating tube or a far infrared heating tube.
[0085] Exemplarily, the DC voltage output by the switching power supply module 103 is 12V or 24V, and 5V.
[0086] Specifically, the 12V or 24V DC voltage output by the switching power supply module 103 is transmitted to the VCC interface of the main control chip 101 and the BLDC brushless direct current motor body 11 .
[0087] In some specific embodiments, because the motor drive module 102 is arranged on the main control circuit board 10, the heat resistance of the motor is higher. Traditional motors can only work in an environment below 70° due to the limitation of the circuit board, while the motor in this solution can work in an environment of 90°.
[0088] Exemplarily, the support frame of the BLDC motor body 11 is made of plastic.
[0089] In some specific embodiments, because the motor drive module 102 is arranged on the main control circuit board 10, the restrictions on the BLDC brushless direct current motor mounting support frame are reduced, so that the BLDC brushless direct current motor mounting support frame can be replaced by a plastic frame from a traditional aluminum or cast iron support frame, which is conducive to reducing costs.
[0090] In the above household appliance motor control system, the motor drive module of the BLDC brushless direct current motor body is arranged on the main control circuit board, which reduces the restrictions on the motor mounting support frame, thereby helping to reduce costs; and because the motor drive module of the BLDC brushless direct current motor body is arranged on the main control circuit board, the BLDC brushless direct current motor part does not need to be designed with the shape of the motor body for the circuit board, reducing the number of control chips used, thereby helping to further reduce costs. In addition, the motor drive module of the BLDC brushless direct current motor body is arranged on the main control circuit board, which improves the utilization rate of the idle interface of the main control chip, and enables the motor body to work at a higher ambient temperature (the maximum operating temperature of the traditional solution is 70 degrees Celsius, and the maximum operating temperature of this solution can reach more than 90 degrees Celsius); the motor drive module of the BLDC brushless direct current motor body is arranged on the main control circuit board, which is also conducive to reducing the size of the motor part, thereby reducing the size of the household appliance.
[0091] The embodiment of the present application further provides a household appliance, comprising: any one of the household appliance motor control systems described above. Specifically, the household appliance motor control systems described above have the same beneficial effects, which will not be described in detail here.
[0092] Figure 4 is a schematic diagram of a process flow of a household appliance motor control method provided by an embodiment of the present application, with reference to Figure 4 , the household appliance motor control method is described in detail as follows:
[0093] Step 401, obtaining control instructions.
[0094] Step 402: based on the control instruction, sequentially adjust the voltages of the first HO port, the first LO port, the second HO port, the second LO port, the third HO port, and the third LO port.
[0095] Step 403: output a three-phase voltage to the BLDC brushless direct current motor body according to the voltages of the first HO port, the first LO port, the second HO port, the second LO port, the third HO port, and the third LO port.
[0096] Description of beneficial effects
[0097] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
[0098] The present application also provides a terminal device, see Figure 5 The terminal device 500 may include: at least one processor 510 and a memory 520, wherein the memory 520 is used to store a computer program 521, and the processor 510 is used to call and run the computer program 521 stored in the memory 520 to implement the steps in any of the above-mentioned method embodiments, for example Figure 1 Steps 101 to 105 in the illustrated embodiment.
[0099] Exemplarily, the computer program 521 may be divided into one or more modules / units, one or more modules / units are stored in the memory 520, and are executed by the processor 510 to complete the present application. The one or more modules / units may be a series of computer program segments that can complete specific functions, and the program segments are used to describe the execution process of the computer program in the terminal device 500.
[0100] Those skilled in the art will understand that Figure 5 It is only an example of a terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, such as input and output devices, network access devices, buses, etc.
[0101] The processor 510 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
[0102] The memory 520 may be an internal storage unit of the terminal device, or an external storage device of the terminal device, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. The memory 520 is used to store the computer program and other programs and data required by the terminal device. The memory 520 may also be used to temporarily store data that has been output or is to be output.
[0103] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.
[0104] The household appliance motor control method provided in the embodiments of the present application can be applied to terminal devices such as computers, wearable devices, vehicle-mounted devices, tablet computers, laptops, netbooks, etc. The embodiments of the present application do not impose any restrictions on the specific types of terminal devices.
[0105] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device that can carry the computer program code to the camera device / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.
[0106] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0107] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
[0108] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.
[0109] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0110] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A household appliance motor control system, It is characterized in that include: A main control circuit board and a BLDC brushless direct current motor body; the main control circuit board includes: a main control chip, a motor drive module and a switching power supply module; The switch power supply module is connected to the main control chip and is used to provide a DC voltage to the main control chip; The main control chip is connected to the motor drive module and is used to output a control signal according to the received control instruction; The motor driving module is connected to the BLDC brushless direct current motor body, and is used to output a three-phase voltage to the BLDC brushless direct current motor body according to the output control signal.
2. The household appliance motor control system according to claim 1, It is characterized in that The motor drive module includes: a U-end drive submodule, a V-end drive submodule, a W-end drive submodule and a connector; the connector is used to connect to the BLDC brushless direct current motor body; The U-end driver submodule includes: a first capacitor, a first driver subchip, a first resistor, a second capacitor and a second resistor; The first end of the first capacitor is respectively connected to the ground terminal of the main control chip and the first interface of the first driver chip, the second end of the first capacitor is respectively connected to the second interface of the first driver chip and the first end of the first resistor, the second end of the first resistor is connected to the first LO port of the main control chip, the first end of the second capacitor is respectively connected to the DC 24V power supply and the third interface of the first driver chip, the second end of the second capacitor is respectively connected to the fourth interface of the first driver chip and the first end of the second resistor, the second end of the second resistor is connected to the first HO port of the main control chip, and the fifth interface, the sixth interface, the seventh interface and the eighth interface of the first driver chip are all connected to the third interface of the connector; The V-end driver submodule includes: a third capacitor, a second driver subchip, a third resistor, a fourth capacitor and a fourth resistor; The first end of the third capacitor is respectively connected to the ground terminal of the main control chip and the first interface of the second driver chip, the second end of the third capacitor is respectively connected to the second interface of the second driver chip and the first end of the third resistor, the second end of the third resistor is connected to the second LO port of the main control chip, the first end of the fourth capacitor is respectively connected to the DC 24V power supply and the third interface of the second driver chip, the second end of the fourth capacitor is respectively connected to the fourth interface of the second driver chip and the first end of the fourth resistor, the second end of the fourth resistor is connected to the second HO port of the main control chip, and the fifth interface, the sixth interface, the seventh interface and the eighth interface of the second driver chip are all connected to the second interface of the connector; The W-end driver submodule includes: a fifth capacitor, a third driver subchip, a fifth resistor, a sixth capacitor, a sixth resistor and a seventh capacitor; The first end of the fifth capacitor is respectively connected to the ground terminal of the main control chip and the first interface of the third driver chip, the second end of the fifth capacitor is respectively connected to the second interface of the third driver chip and the first end of the fifth resistor, the second end of the fifth resistor is connected to the third LO port of the main control chip, the first end of the sixth capacitor is respectively connected to the DC 24V power supply and the third interface of the third driver chip, the second end of the sixth capacitor is respectively connected to the fourth interface of the third driver chip and the first end of the sixth resistor, the second end of the sixth resistor is connected to the third HO port of the main control chip, and the fifth interface, the sixth interface, the seventh interface and the eighth interface of the third driver chip are all connected to the first interface of the connector; A first end of the seventh capacitor is connected to a DC 24V power supply, and a second end of the seventh capacitor is grounded.
3. The household appliance motor control system according to claim 1, It is characterized in that The household appliance motor control system further includes: a display driving board; The display driver board includes: a display chip, an LED display module, a touch key input module and a first communication module; The LED display module is connected to the display chip and is used to display the working mode, working power and remaining working time of the household appliance; The touch key input module is connected to the display chip and is used to change, turn on and off the working mode of the household appliance, and modify the working power of the household appliance; The first communication module is connected to the display chip and is used to send the control instruction to the main control chip after determining the working mode and working power of the household appliance; The first communication module is further used to receive feedback information sent by the main control chip.
4. The household appliance motor control system according to claim 3, It is characterized in that The household appliance motor control system further includes: a bulb driving circuit module, a bulb, a heating tube driving circuit module, a heating tube, an NTC voltage acquisition circuit, an NTC temperature sensor, a buzzer driving circuit module, a buzzer and a second communication module; The light bulb driving circuit module is connected to the main control chip and is used to drive the light bulb to turn on or off; The heating tube driving circuit module is connected to the main control chip and is used to drive the heating tube to start or stop working; The NTC voltage acquisition circuit is connected to the main control chip and is used to obtain the voltage generated by the NTC temperature sensor; The buzzer driving circuit module is connected to the main control chip and is used to drive the buzzer to start or stop working; The second communication module is connected to the main control chip and is used for communication connection with the first communication module.
5. The household appliance motor control system according to claim 4, It is characterized in that The heating tube is a stainless steel heating tube or a far infrared heating tube.
6. The household appliance motor control system according to claim 1, It is characterized in that The DC voltage output by the switching power supply module is 12V or 24V, and 5V.
7. The household appliance motor control system according to claim 1, It is characterized in that The support frame of the BLDC brushless direct current motor body is made of plastic.
8. A method for controlling a motor of a household appliance, It is characterized in that include: Get control instructions; Based on the control instruction, sequentially adjust the voltages of the first HO port, the first LO port, the second HO port, the second LO port, the third HO port, and the third LO port; According to the voltages of the first HO port, the first LO port, the second HO port, the second LO port, the third HO port and the third LO port, a three-phase voltage is output to the BLDC brushless direct current motor body.
9. A terminal device, include: A processor and a memory, wherein the memory stores a computer program that can be run on the processor, and wherein the household appliance motor control method as claimed in claim 8 is implemented when the processor executes the computer program.
10. A household appliance, include: A household appliance motor control system as claimed in any one of claims 1 to 7.