Driving circuit, driving assembly and clothes treatment apparatus

Abstract

This application discloses a driving circuit, driving assembly, and clothing processing device. The driving circuit includes a first switch, a second switch, a third switch, and a fourth switch. The first and second switches are turned on in a low-level state. The input terminal of the first switch is connected to a power supply, and its output terminal is connected to a first input terminal of the motor and the input terminal of the third switch. Its control terminal is connected to the input terminal of the fourth switch. The input terminal of the second switch is connected to a power supply, and its output terminal is connected to a second input terminal of the motor and the input terminal of the fourth switch. Its control terminal is connected to the input terminal of the third switch. The control terminal of the third switch receives a first control signal, and its output terminal is grounded. The control terminal of the fourth switch receives a second control signal, and its output terminal is grounded. The driving circuit in this application has a simple structure, low application cost, and is beneficial to improving the stability of motor operation. This application can be widely used in the field of circuit technology.

Description

Technical Field

[0001] This application relates to the field of circuit technology, and in particular to a drive circuit, drive assembly, and garment processing device. Background Technology

[0002] Currently, clothing handling equipment (such as washing machines, dryers, and washer-dryer combos) is an indispensable appliance in modern households. They not only greatly improve housework efficiency and free people's hands, but also bring a more efficient and convenient living experience through the iteration of intelligent and energy-saving technologies. Clothing handling equipment generally requires motors, especially reversible motors. For example, washing machines use reversible motors to drive the drum to rotate alternately, reducing clothes tangling and improving cleaning efficiency.

[0003] In related technologies, motor operation is generally controlled based on drive circuits. However, the structural layout of traditional drive circuits still needs improvement.

[0004] In summary, the problems with the relevant technologies urgently need to be addressed. Utility Model Content

[0005] The purpose of this application is to at least partially solve one of the technical problems existing in the related art.

[0006] Therefore, one objective of the embodiments of this application is to provide a driving circuit, a driving component, and a garment processing device.

[0007] On the one hand, this application provides a driving circuit, including a first switching transistor, a second switching transistor, a third switching transistor, and a fourth switching transistor;

[0008] The input terminal of the first switching transistor is connected to a power source, the output terminal of the first switching transistor is connected to the input terminal of the third switching transistor and the first connection terminal of the motor, and the control terminal of the first switching transistor is connected to the input terminal of the fourth switching transistor.

[0009] The input terminal of the second switching transistor is connected to a power supply, the output terminal of the second switching transistor is connected to the input terminal of the fourth switching transistor and the second input terminal of the motor, and the control terminal of the second switching transistor is connected to the input terminal of the third switching transistor.

[0010] The control terminal of the fourth switch is connected to the first control signal, and the output terminal of the fourth switch is grounded; the control terminal of the third switch is connected to the second control signal, and the output terminal of the third switch is grounded.

[0011] The first and second switching transistors are both switched on when in a low-level state.

[0012] In some embodiments, the driving circuit further includes a first resistor and a third resistor, a first end of the first resistor is connected to the control terminal of the second switching transistor, a second end of the first resistor is connected to a power supply, and the control terminal of the second switching transistor is connected to the input terminal of the third switching transistor through the third resistor.

[0013] And / or, the driving circuit further includes a second resistor and a fourth resistor, the first end of the second resistor is connected to the control terminal of the first switching transistor, the second end of the second resistor is connected to the power supply, and the control terminal of the first switching transistor is connected to the input terminal of the fourth switching transistor through the fourth resistor.

[0014] In some embodiments, the driving circuit further includes a fifth resistor, the first end of which is connected to the control terminal of the fourth switching transistor, and the second end of which is connected to the first control signal.

[0015] And / or, the driving circuit further includes a sixth resistor, the first end of which is connected to the control terminal of the third switching transistor, and the second end of which is connected to the second control signal.

[0016] In some embodiments, the driving circuit further includes a seventh resistor, and the control terminal of the fourth switching transistor is also grounded through the seventh resistor;

[0017] And / or, the drive circuit further includes an eighth resistor, and the control terminal of the third switch is also grounded through the eighth resistor.

[0018] In some embodiments, at least one of the first switch and the second switch is a P-channel metal-oxide-semiconductor field-effect transistor or a P-type bipolar junction transistor.

[0019] In some embodiments, at least one of the third and fourth switching transistors is an N-channel metal-oxide-semiconductor field-effect transistor or an N-type bipolar junction transistor.

[0020] In some embodiments, the drive circuit is used for driving the motor of a dryer, washing machine, or washer-dryer combo.

[0021] On the other hand, this application provides a driving component, including: a processor and the aforementioned driving circuit; the processor is connected to the driving circuit.

[0022] In some embodiments, the processor includes a first signal port and a second signal port;

[0023] The first signal port is connected to the control terminal of the fourth switch and outputs the first control signal to the control terminal of the fourth switch; the second signal port is connected to the control terminal of the third switch and outputs the second control signal to the control terminal of the third switch; the first control signal and the second control signal are pulse width modulation signals.

[0024] In some embodiments, the driving component further includes an inverter; the processor includes a third signal port;

[0025] The third signal port is connected to the control terminal of the fourth switch transistor and outputs the first control signal to the control terminal of the fourth switch transistor; the third signal port is also connected to the input terminal of the inverter, and the output terminal of the inverter is connected to the control terminal of the third switch transistor and outputs the second control signal to the control terminal of the third switch transistor.

[0026] On the other hand, this application provides a garment processing device, including: the aforementioned drive circuit or drive component, and the motor; the drive circuit or drive component is used to drive the motor.

[0027] The advantages and beneficial effects of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application:

[0028] This application discloses a driving circuit, driving component, and clothing processing device. The driving circuit includes a first switch, a second switch, a third switch, and a fourth switch. The first and second switches are turned on in a low-level state. The input terminal of the first switch is connected to a power supply, its output terminal is connected to a first input terminal of the motor and the input terminal of the third switch, and its control terminal is connected to the input terminal of the fourth switch. The input terminal of the second switch is connected to a power supply, its output terminal is connected to a second input terminal of the motor and the input terminal of the fourth switch, and its control terminal is connected to the input terminal of the third switch. The control terminal of the third switch receives a first control signal, and its output terminal is grounded. The control terminal of the fourth switch receives a second control signal, and its output terminal is grounded. This application uses a small number of switches to build a driving circuit capable of driving a motor to run in both forward and reverse directions. The structure is simple, and the application cost is low. Furthermore, this driving circuit operates based on the first and second control signals, occupying fewer signal ports of the processor, and the control logic is relatively simple, which is beneficial to improving the stability of motor operation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following description is provided with accompanying drawings of the relevant technical solutions in the embodiments of this application or the prior art. It should be understood that the accompanying drawings described below are only for the purpose of clearly illustrating some embodiments of the technical solutions of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 This is a schematic diagram of the circuit structure of a driving circuit provided in related technologies;

[0031] Figure 2 This is a schematic diagram of the circuit structure of a driving circuit provided in an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the circuit structure of another driving circuit provided in the embodiments of this application;

[0033] Figure 4 This is a schematic diagram of the circuit structure of a driving component provided in an embodiment of this application;

[0034] Figure 5 This is a schematic diagram of the circuit structure of a driving component provided in an embodiment of this application. Detailed Implementation

[0035] The present application will be further described below with reference to the accompanying drawings and specific embodiments. The described embodiments should not be considered as limitations on the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0036] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0037] In the description of this application, it should be understood that the terms "length," "upper," "lower," "front," "rear," "left," "right," "top," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] Currently, clothing handling equipment (such as washing machines, dryers, and washer-dryer combos) is an indispensable appliance in modern households. They not only greatly improve housework efficiency and free people's hands, but also bring a more efficient and convenient living experience through the iteration of intelligent and energy-saving technologies. Clothing handling equipment generally requires motors, especially reversible motors. For example, washing machines use reversible motors to drive the drum to rotate alternately, reducing clothes tangling and improving cleaning efficiency.

[0040] Figure 1 A schematic diagram of the circuit structure of a driving circuit provided in the related art is shown. For example... Figure 1 As shown, in a driving circuit of the related technology, four switching transistors are set. These switching transistors are all triodes, referred to as the first triode Q11, the second triode Q12, the third triode Q13 and the fourth triode Q14 respectively. The control terminal of each triode is connected to the signal port of the processor to receive the corresponding control signal. The control signal here is generally a high or low level signal. For example, a 3.3V or 5V level signal is used as the high level signal and a 0V level signal is used as the low level signal. Figure 1 In this motor M, transistors Q11, Q12, Q13, and Q14 are all N-type transistors, meaning they conduct at high levels. During operation, when a high level is input to Q11 and Q14, and a low level is input to Q12 and Q13, the current flows from left to right in motor M. Conversely, when a low level is input to Q11 and Q14, and a high level is input to Q12 and Q13, the current flows from right to left. By adjusting the input levels of these transistors, the forward and reverse rotation of motor M can be controlled. However, Figure 1 The circuit layout requires coordinated control of four transistors, which occupies a large number of processor signal ports; moreover, it involves the coordination of the conduction times of multiple different transistors, making the control logic quite complicated and easily affecting the stability of motor operation.

[0041] It should be noted that, Figure 1 The circuit structure of the driving circuit shown is only for the purpose of assisting in understanding the technical solution of this application, and does not mean that it belongs to the prior art that has been disclosed.

[0042] In this embodiment, a driving circuit is provided. This driving circuit has a simple structure and low application cost; moreover, it operates based on a first control signal and a second control signal, occupies fewer signal ports of the processor, and has relatively simple control logic, which is beneficial for improving the stability of motor operation. Specifically, please refer to... Figure 2 , Figure 2 This paper shows a schematic diagram of the circuit structure of a driving circuit provided in an embodiment of the present application. The driving circuit in this embodiment includes:

[0043] The first switch Q1, the second switch Q2, the third switch Q3, and the fourth switch Q4;

[0044] The input terminal of the first switch Q1 is connected to the power supply VCC. The output terminal of the first switch Q1 is connected to the input terminal of the third switch Q3 and the first input terminal of the motor M. The control terminal of the first switch Q1 is connected to the input terminal of the fourth switch Q4.

[0045] The input terminal of the second switch Q2 is connected to the power supply VCC. The output terminal of the second switch Q2 is connected to the input terminal of the fourth switch Q4 and the second input terminal of the motor M. The control terminal of the second switch Q2 is connected to the input terminal of the third switch Q3.

[0046] The control terminal of the fourth switch Q4 is connected to the first control signal, and the output terminal of the fourth switch Q4 is grounded. The control terminal of the third switch Q3 is connected to the second control signal, and the output terminal of the third switch Q3 is grounded.

[0047] Among them, the first switch Q1 and the second switch Q2 are switches that are turned on in the low-level state.

[0048] Reference Figure 2In the driving circuit of this application embodiment, the whole includes four switching transistors, which are respectively designated as the first switching transistor Q1, the second switching transistor Q2, the third switching transistor Q3, and the fourth switching transistor Q4. The first switching transistor Q1 and the second switching transistor Q2 are turned on in the low-level state, while the third switching transistor Q3 and the fourth switching transistor Q4 are turned on in the high-level state. This application does not limit the type of the first switching transistor Q1, the second switching transistor Q2, the third switching transistor Q3, and the fourth switching transistor Q4. For example, the first switching transistor Q1 (and / or the second switching transistor Q2) can be a P-channel metal-oxide-semiconductor field-effect transistor or a P-type bipolar junction transistor, and the third switching transistor Q3 (and / or the fourth switching transistor Q4) can be an N-channel metal-oxide-semiconductor field-effect transistor or an N-type bipolar junction transistor. Furthermore, the first switch Q1 and the second switch Q2 can be the same type of switch or different types of switch, and the same applies to the third switch Q3 and the fourth switch Q4. This application does not impose any restrictions on this.

[0049] Specifically, when the first switch Q1 and the second switch Q2 are selected as P-channel metal-oxide-semiconductor field-effect transistors, it can be as follows: Figure 2 As shown, the source (S) is used as the input terminal and the drain (D) is used as the output terminal; alternatively, the drain (D) can be used as the input terminal and the source (S) as the output terminal, and this application does not impose any restrictions on this.

[0050] In this embodiment, for the drive circuit, the control terminal of the first switch Q1 is connected to the input terminal of the fourth switch Q4, and the output terminal of the fourth switch Q4 is grounded; the control terminal of the second switch Q2 is connected to the input terminal of the third switch Q3, and the output terminal of the third switch Q3 is grounded. When using the drive circuit, a power supply VCC can be connected to the drive circuit first, and then the drive circuit can be connected to the motor M. Specifically, the input terminals of the first switch Q1 and the second switch Q2 are connected to the power supply VCC, and the output terminals of the first switch Q1 and the second switch Q2 are connected to the motor M. The motor M can include two power supply terminals, denoted as the first terminal and the second terminal. In some embodiments, the first terminal can be a positive terminal, and the second terminal can be a negative terminal. Thus, when current flows from the first terminal to the second terminal, the motor M rotates in the forward direction; when current flows from the second terminal to the first terminal, the motor M rotates in the reverse direction. Of course, in other embodiments, the first access terminal can be a negative terminal, and the second access terminal can be a positive terminal. Thus, when current flows from the first access terminal to the second access terminal, the motor M is in reverse rotation, and when current flows from the second access terminal to the first access terminal, the motor M is in forward rotation. In this embodiment, the output terminal of the first switch Q1 can be connected to the first access terminal. When the first switch Q1 is turned on, the first access terminal is connected to the power supply VCC. Similarly, the output terminal of the second switch Q2 can be connected to the second access terminal. When the second switch Q2 is turned on, the second access terminal is connected to the power supply VCC.

[0051] It is understood that in this embodiment, there are no restrictions on the power supply VCC connected to the drive circuit and the motor M. The type of motor M can be flexibly selected according to actual needs, and the voltage level of the power supply VCC can be configured accordingly based on the situation of the motor M. Furthermore, the power supply VCC connected to the first and second switching transistors can be provided by the same power supply device or by different power supply devices.

[0052] The driving circuit in this embodiment also requires control signals to control its operating conditions. Specifically, it requires two control signals, denoted as the first control signal and the second control signal. The first control signal can be input to the control terminal of the fourth switch Q4 to control its conduction state, and the second control signal can be input to the control terminal of the third switch Q3 to control its conduction state. These first and second control signals can be high or low level signals. Taking the fourth switch Q4 as an example, when the first control signal is high, it is in the conduction state; when the first control signal is low, it is in the cutoff state.

[0053] Below, in conjunction with Figure 2 The circuit structure diagram is shown below, which introduces and explains the working principle of a driving circuit provided in the embodiments of this application.

[0054] The drive circuit in this embodiment can be used to drive the motor M to rotate forward or in reverse. After the power supply VCC and the motor M are connected to the drive circuit, control signals can be input to the fourth switch Q4 and the third switch Q3 of the drive circuit through a related processor, thereby realizing the control of the motor M.

[0055] Specifically, when no control signals are input to the fourth switch Q4 and the third switch Q3 of the drive circuit, the motor M is in (or nearly) a stationary state. When a high-level first control signal is input to the fourth switch Q4 of the drive circuit, and a low-level second control signal is input to the third switch Q3 (which can also be considered as no second control signal being input), the fourth switch Q4 is in a conducting state, and the third switch Q3 is in a cutoff state. At this time, the control terminal voltage of the first switch Q1 is less than the input terminal voltage, so it will be in a conducting state, and the second switch Q2 will be in a cutoff state, thus forming a loop of "power supply VCC → first switch Q1 → motor M → fourth switch Q4 → ground". In motor M, the current flows from the first input terminal to the second input terminal. Assuming motor M operates in forward rotation under these conditions, when reverse rotation is required, a low-level first control signal (or no first control signal can be considered input) can be input to the fourth switch Q4 of the drive circuit, and a high-level second control signal can be input to the third switch Q3. The fourth switch Q4 is in the off state, and the third switch Q3 is in the on state. At this time, the control terminal voltage of the second switch Q2 is less than the input terminal voltage, so it will be in the on state, and the first switch Q1 will be in the off state, thus forming a loop of "power supply VCC → second switch Q2 → motor M → third switch Q3 → ground". In motor M, the current flows from the second input terminal to the first input terminal, thus achieving reverse rotation of motor M.

[0056] It is understood that the driving circuit provided in this application embodiment includes a first switch Q1, a second switch Q2, a third switch Q3, and a fourth switch Q4. The first and second switches Q1 are turned on in a low-level state. The input terminal of the first switch Q1 is connected to the power supply VCC, and its output terminal is connected to the first input terminal of the motor M and the input terminal of the third switch Q3. Its control terminal is connected to the input terminal of the fourth switch Q4. The input terminal of the second switch Q2 is connected to the power supply VCC, and its output terminal is connected to the second input terminal of the motor M and the input terminal of the fourth switch Q4. Its control terminal is connected to the input terminal of the third switch Q3. The control terminal of the third switch Q3 receives a first control signal, and its output terminal is grounded. The control terminal of the fourth switch Q4 receives a second control signal, and its output terminal is grounded. This application uses only a small number of switches to build a driving circuit capable of driving the motor M to run in both forward and reverse directions. The structure is simple, and the application cost is low. Furthermore, this driving circuit operates based on the first and second control signals, occupying fewer signal ports of the processor, and the control logic is relatively simple, which is beneficial for improving the stability of the motor M's operation.

[0057] In some embodiments, additional components may be included within the drive circuit to protect the switching transistor or improve the circuit's operational stability. For example, please refer to... Figure 3 , Figure 3 This illustration shows a schematic diagram of the circuit structure of another driving circuit provided in an embodiment of this application, relative to... Figure 2 The driving circuit shown, Figure 3 The driving circuit shown mainly adds the following components:

[0058] On the one hand, in the driving circuit of the embodiments of this application, resistors for protecting the switching transistor can be provided, such as the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6.

[0059] Among them, the first resistor R1 and the third resistor R3 form a group to protect the second switch Q2 and the third switch Q3; the second resistor R2 and the fourth resistor R4 form a group to protect the first switch Q1 and the fourth switch Q4; the fifth resistor R5 can be used to protect the fourth switch Q4; and the sixth resistor R6 can be used to protect the third switch Q3.

[0060] Taking the first resistor R1 and the third resistor R3 as an example, the first end of the first resistor R1 can be connected to the control terminal of the second switching transistor Q2, and the second end is connected to the power supply VCC; the third resistor R3 is placed between the control terminal of the second switching transistor Q2 and the input terminal of the third switching transistor Q3. The advantage of this is that the voltage divider effect of the first resistor R1 and the third resistor R3 can raise the voltage at the control terminal of the second switching transistor Q2, preventing the voltage difference between the control terminal and the input terminal of Q2 from becoming too large, thus reducing the probability of dielectric breakdown of the switching transistor and providing a certain degree of protection for Q2. At the same time, the third resistor R3 can also reduce the current flowing from the power supply VCC to the branch of the first resistor R1 to the third switching transistor Q3 to a certain extent, preventing excessive current at the input and output terminals of the third switching transistor Q3, thereby providing a certain degree of protection for Q3. For the second resistor R2 and the fourth resistor R4, the first end of the second resistor R2 can be connected to the control terminal of the first switching transistor Q1, and the second end is connected to the power supply VCC; the fourth resistor R4 is placed between the control terminal of the first switching transistor Q1 and the input terminal of the fourth switching transistor Q4. The functions of the second resistor R2 and the fourth resistor R4 are similar to those of the first resistor R1 and the third resistor R3 mentioned above, and will not be repeated here.

[0061] Taking the fifth resistor R5 as an example, its first end is connected to the control terminal of the fourth switch Q4, and its second end is connected to the first control signal. This limits the current caused by the first control signal, reducing the probability of the fourth switch Q4 burning out. Furthermore, when the fourth switch Q4 is a transistor, excessive base current can cause the transistor to enter deep saturation, increasing the turn-off delay and affecting high-frequency switching performance. The fifth resistor R5 effectively mitigates this drawback. For the sixth resistor R6, its first end is connected to the control terminal of the third switch Q3, and its second end is connected to the second control signal. The function of the sixth resistor R6 is similar to that of the fifth resistor R5, and will not be elaborated upon here.

[0062] On the other hand, in the driving circuit of this application embodiment, resistors such as the seventh resistor R7 and the eighth resistor R8 can be provided to improve the working stability of the circuit.

[0063] Taking the seventh resistor R7 as an example, the control terminal of the fourth switch Q4 can also be grounded through the seventh resistor R7. This can prevent induced charge or noise from interfering with the fourth switch Q4, causing it to falsely turn on, and can improve the working stability of the drive circuit. For the eighth resistor R8, the control terminal of the third switch Q3 can also be grounded through the eighth resistor R8. The function of the eighth resistor R8 is similar to that of the seventh resistor R7, and will not be elaborated further here.

[0064] The drive circuit in this application embodiment can be applied to the motor drive of various clothing processing devices, including but not limited to dryers, washing machines, or washer-dryer combos. Dryers primarily function to quickly evaporate residual moisture from clothes through hot air circulation, achieving efficient drying without the need for air drying. Washing machines primarily remove stains from clothes through the combined action of mechanical force (stirring / tumbling) and detergent. Washer-dryer combos integrate washing and drying functions, completing both washing and drying operations in one go. It is understood that the drive circuit provided in this application embodiment can be used in all these clothing processing devices to drive the motor operation in a low-cost, efficient, and stable manner.

[0065] This application also provides a driving component for driving a motor. The driving component includes a processor and the driving circuit described in the foregoing embodiments. The processor is connected to the driving circuit and can transmit control signals to it. This application does not limit the specific model of the processor. For example, in some embodiments, the processor can be a microcontroller (MCU), such as an STM32F0 / F1 series or an STM32F4 / H7 series chip; in other embodiments, the processor can be a digital signal processor (DSP), such as a TMS320F28035 or a Microchip dsPIC33EP series chip. This application does not impose any limitations on this.

[0066] In some embodiments, the processor can directly output the first control signal and the second control signal to the drive circuit.

[0067] For example, please refer to Figure 4 , Figure 4 A schematic diagram of the circuit structure of a driving component provided in an embodiment of this application is shown. For example... Figure 4 As shown, the processor U1 in this embodiment may include two ports for outputting a first control signal and a second control signal, denoted as first signal port IO1 and second signal port IO2, respectively. The first signal port IO1 outputs the first control signal and can be connected to the control terminal of the fourth switch Q4 (in the case of a fifth resistor R5, it can be connected to the control terminal of the fourth switch Q4 via the fifth resistor R5). Similarly, the second signal port IO2 outputs the second control signal and can be connected to the control terminal of the third switch Q3 (in the case of a sixth resistor R6, it can be connected to the control terminal of the third switch Q3 via the sixth resistor R6).

[0068] Specifically, in this embodiment of the application, when the processor U1 directly outputs the first control signal and the second control signal, the first control signal and the second control signal can be pulse width modulation (PWM) signals. The pulse width modulation signal can quickly control the switching transistor to turn on or off. By quickly turning the switch on or off (usually at a frequency of 1kHz to 20kHz), the duty cycle can be adjusted, thereby controlling the average voltage output to the motor and facilitating speed regulation of the motor.

[0069] In some embodiments, the operating condition control of the drive circuit can also be implemented using only one signal port of the processor U1. For example, please refer to... Figure 5 , Figure 5 A schematic diagram of the circuit structure of another driving component provided in an embodiment of this application is shown. For example... Figure 5 As shown in this embodiment, the processor U1 may include a third signal port IO3 for outputting a first control signal. The third signal port IO3 can be connected to the control terminal of the fourth switch Q4. Furthermore, an inverter IC may be included within the drive assembly. The third signal port IO3 can be connected to the input terminal of the inverter IC, and the output terminal of the inverter IC can be used to output a second control signal, connected to the control terminal of the third switch Q3. Thus, when the third signal port IO3 outputs a high-level signal, the first control signal is also a high-level signal, and the second control signal obtained through the inverter IC is a low-level signal; conversely, when the third signal port IO3 outputs a low-level signal, the first control signal is a low-level signal, and the second control signal obtained through the inverter IC is a high-level signal. This ensures that the first and second control signals will not be simultaneously at a high level. Flexible control of the motor can be achieved using only one signal port of the processor U1, simplifying the control logic and improving the motor's operational stability.

[0070] It should be noted that, in the embodiments of this application, the first signal port IO1, the second signal port IO2 and the third signal port IO3 can be any port of the processor U1. This application does not limit the specific number of ports contained in the processor U1 or the selection method of each signal port.

[0071] This application also provides a garment processing device, including a motor and the drive circuit or drive component in the foregoing embodiments, which can be used to drive the motor in the garment processing device.

[0072] It is understood that applying the driving circuit or driving components in the foregoing embodiments to clothing processing equipment can reduce the implementation cost of clothing processing equipment, improve the stability of equipment operation, improve the effect of clothing processing, and thus improve the user experience.

[0073] In the description of this specification, references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A driving circuit, characterized in that, It includes a first switching transistor, a second switching transistor, a third switching transistor, and a fourth switching transistor; The input terminal of the first switching transistor is connected to a power source, the output terminal of the first switching transistor is connected to the input terminal of the third switching transistor and the first connection terminal of the motor, and the control terminal of the first switching transistor is connected to the input terminal of the fourth switching transistor. The input terminal of the second switching transistor is connected to a power supply, the output terminal of the second switching transistor is connected to the input terminal of the fourth switching transistor and the second input terminal of the motor, and the control terminal of the second switching transistor is connected to the input terminal of the third switching transistor. The control terminal of the fourth switch is connected to the first control signal, and the output terminal of the fourth switch is grounded; the control terminal of the third switch is connected to the second control signal, and the output terminal of the third switch is grounded. The first and second switching transistors are both switched on when in a low-level state.

2. The driving circuit according to claim 1, characterized in that, The driving circuit further includes a first resistor and a third resistor. The first end of the first resistor is connected to the control terminal of the second switching transistor, and the second end of the first resistor is connected to the power supply. The control terminal of the second switching transistor is connected to the input terminal of the third switching transistor through the third resistor. And / or, the driving circuit further includes a second resistor and a fourth resistor, the first end of the second resistor is connected to the control terminal of the first switching transistor, the second end of the second resistor is connected to the power supply, and the control terminal of the first switching transistor is connected to the input terminal of the fourth switching transistor through the fourth resistor.

3. The driving circuit according to claim 1, characterized in that, The driving circuit further includes a fifth resistor, the first end of which is connected to the control terminal of the fourth switching transistor, and the second end of which is connected to the first control signal. And / or, the driving circuit further includes a sixth resistor, the first end of which is connected to the control terminal of the third switching transistor, and the second end of which is connected to the second control signal.

4. The driving circuit according to claim 1, characterized in that, The driving circuit also includes a seventh resistor, and the control terminal of the fourth switching transistor is grounded through the seventh resistor. And / or, the drive circuit further includes an eighth resistor, and the control terminal of the third switch is also grounded through the eighth resistor.

5. A driving circuit according to any one of claims 1-4, characterized in that, At least one of the first switch and the second switch is a P-channel metal-oxide-semiconductor field-effect transistor or a P-type bipolar junction transistor.

6. A driving circuit according to any one of claims 1-4, characterized in that, At least one of the third and fourth switching transistors is an N-channel metal-oxide-semiconductor field-effect transistor or an N-type bipolar junction transistor.

7. A driving circuit according to claim 1, characterized in that, The drive circuit is used to drive the motor of a dryer, washing machine, or washer-dryer combo.

8. A driving component, characterized in that, include: The processor and the driving circuit as described in any one of claims 1-6; The processor is connected to the drive circuit.

9. A driving component according to claim 8, characterized in that, The processor includes a first signal port and a second signal port; The first signal port is connected to the control terminal of the fourth switch and outputs the first control signal to the control terminal of the fourth switch; the second signal port is connected to the control terminal of the third switch and outputs the second control signal to the control terminal of the third switch; the first control signal and the second control signal are pulse width modulation signals.

10. A driving component according to claim 8, characterized in that, The driving component further includes an inverter; the processor includes a third signal port; The third signal port is connected to the control terminal of the fourth switch transistor and outputs the first control signal to the control terminal of the fourth switch transistor; the third signal port is also connected to the input terminal of the inverter, and the output terminal of the inverter is connected to the control terminal of the third switch transistor and outputs the second control signal to the control terminal of the third switch transistor.

11. A garment processing device, characterized in that, include: The driving circuit as described in any one of claims 1-7 or the driving component as described in any one of claims 8-10, and the motor; the driving circuit or the driving component is used to drive the motor.

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