Control circuit and dust collection and blowing equipment

Abstract

The utility model discloses a control circuit and dust collection blowing equipment, and the control circuit comprises a first motor which is used for connecting a blowing part and driving the blowing part to generate a first air flow; the second motor is used for being connected with a dust collection part and driving the dust collection part to generate second airflow; and the control module is used for controlling the working states of the first motor and the second motor. The two motors are arranged to drive the air blowing component and the dust collection component correspondingly, the air blowing effect can be achieved, the dust collection effect can also be achieved, and cost and portability can be taken into consideration at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrical appliances, in particular to a control circuit and a dust-suction hair dryer. BACKGROUND

[0002] Dust collector and hair dryer are both products that car owners commonly keep. At present, both of them are independent products. Car owners generally need to configure a hair dryer to remove dust, foreign matter and the like on the surface of the car. However, when the hair dryer is used in the car, dust will fly, and this phenomenon will not occur when the dust collector is used. Therefore, the car owner will also configure a dust collector. In this way, the car owner needs to purchase a dust collector and a dust-blowing hair dryer respectively, which is not only not economical, but also inconvenient to carry.

[0003] The above information disclosed in the background section of this document is only included to enhance the understanding of the background of the present disclosure, and therefore can include information that is not prior art known to those of ordinary skill in the art. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a control circuit and a dust-suction hair dryer to solve the defects of high cost, inconvenience to carry and unsatisfactory dust-suction effect of the hair dryer and the dust collector in the prior art.

[0005] The technical solution adopted by the present application to solve the technical problem is to provide a control circuit, comprising:

[0006] a first motor for connecting a hair-drying component and driving the hair-drying component to generate a first air flow;

[0007] a second motor for connecting a dust-suction component and driving the dust-suction component to generate a second air flow;

[0008] a control module for controlling the working state of the first motor and the second motor.

[0009] The present application also provides a dust-suction hair dryer, which comprises a housing, a hair-drying component, a dust-suction component and the control circuit as described above, and at least part of the structure of the hair-drying component, the dust-suction component or the control circuit is arranged in the housing.

[0010] The control circuit and the dust-suction hair dryer of the present application have the following beneficial effects: the present application configures two motors to drive the hair-drying component and the dust-suction component respectively, which can realize both hair-drying effect and dust-suction effect, and the two motors are configured separately, which can guarantee the hair-drying and dust-suction effects. The present application can simultaneously consider cost, portability and hair-drying and dust-suction effects, and can meet the scene where hair-drying and dust-suction are needed at the same time.

[0011] Other advantages, objects, and features of the application will be apparent to those skilled in the art from the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the provided drawings without creative labor:

[0013] Figure 1 is one of the circuit structure schematic diagrams of the control circuit embodiment of the present application;

[0014] Figure 2 is the second circuit structure schematic diagram of the control circuit embodiment of the present application;

[0015] Figure 3 is one of the principle diagrams of the driving module;

[0016] Figure 4 is the second principle diagram of the driving module;

[0017] Figure 5 is the circuit diagram of one specific implementation of the driving module;

[0018] Figure 6 is the third principle diagram of the driving module;

[0019] Figure 7 is the fourth principle diagram of the driving module;

[0020] Figure 8 is the circuit diagram of another specific implementation of the driving module;

[0021] Figure 9 is the third circuit structure schematic diagram of the control circuit embodiment of the present application;

[0022] Figure 10 is the circuit principle diagram of the motor state detection module for realizing temperature detection;

[0023] Figure 11 is the principle diagram of the basic voltage division circuit;

[0024] Figure 12 is the fourth circuit structure schematic diagram of the control circuit embodiment of the present application;

[0025] Figure 13 is the schematic diagram of the control module and the peripheral circuit;

[0026] Figure 14is a circuit schematic diagram of the energy storage management module;

[0027] Figure 15 is a circuit schematic diagram of the energy storage charging module;

[0028] Figure 16 is a circuit schematic diagram of the energy storage discharging module;

[0029] Figure 17 Figure 5 is a circuit structure schematic diagram of the control circuit embodiment of the present application;

[0030] In the figure, various reference signs are as follows:

[0031] 1, first motor; 2, second motor; 3, control module; 4, driving module; 41, first motor driving circuit; 42, second motor driving circuit; 43, first output circuit; 44, second output circuit; 45, third motor driving circuit; 46, first gating circuit; 47, second gating circuit; 48, third output circuit; 49, fourth output circuit; 5, motor state detection module; 51, first motor current detection circuit; 52, second motor current detection circuit; 53, third motor current detection circuit; 54, first motor temperature detection circuit; 55, second motor temperature detection circuit; 6, input circuit; 7, prompt circuit; 8, energy storage management module; 81, power supply control switch circuit; 82, energy storage charging and discharging protection circuit; 83, voltage stabilizing circuit; 84, energy storage temperature detection circuit; 85, cell voltage detection circuit; 9, energy storage charging module; 10, energy storage discharging module; 11, emergency starting current output path; 12, lighting module; 13, emergency starting control circuit. DETAILED DESCRIPTION

[0032] In view of the defects of high cost, inconvenience to carry, and unsatisfactory dust suction effect of the vehicle blower and the vehicle dust collector in the prior art, the present application provides a control circuit and a dust suction and blowing device. The general idea of the present application is as follows: a first motor is configured for a blowing component, and a second motor is configured for a dust suction component. The first motor is used to connect the blowing component and drive the blowing component to generate a first airflow. The second motor is used to connect the dust suction component and drive the dust suction component to generate a second airflow. The working state of the first motor and the second motor is controlled by a control module. In this way, the present application can realize blowing effect and dust suction effect. Moreover, the two motors are configured separately, which can guarantee blowing and dust suction effect. The present application can simultaneously consider cost, portability, and blowing and dust suction effect, and can meet the scene where blowing and dust suction need to be started simultaneously.

[0033] For the purpose of facilitating the understanding of the present application, a more full and comprehensive description of the present application will be made with reference to the accompanying drawings. The drawings illustrate exemplary embodiments of the present application. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present application to those skilled in the art. It should be understood that the embodiments of the present application and the specific features thereof are illustrative in nature and are not intended as limitations on the technical solution of the present application, and the technical features in the embodiments and the specific features thereof can be combined with each other without conflict.

[0034] Reference Figure 1 , Figure 1 is one of the structural schematic diagrams of the control circuit of the present application, and the control circuit of the present application comprises: a first motor 1, a second motor 2 and a control module 3.

[0035] The first motor 1 is used to connect a blowing component and drive the blowing component to generate a first air flow. The first air flow flows away from the blowing component to generate an outward blowing effect. The blowing component refers to a component that can generate the first air flow when working. The blowing component can be selected by referring to the blowing component of a common hair dryer, such as a traditional impeller or an axial fan. Since the blowing effect is emphasized, the first motor 1 can be selected in the direction of high speed, such as a high-speed centrifugal motor.

[0036] The second motor 2 is used to connect a dust suction component and drive the dust suction component to generate a second air flow. The second air flow flows towards the dust suction component to generate an inward dust suction effect, which generally needs to be matched with an air duct. The dust suction component refers to a component that can generate the second air flow when working. The dust suction component can be selected by referring to the dust suction component of a common dust collector, such as a traditional impeller or a centrifugal fan. Since the dust suction effect is emphasized, the second motor 2 can be selected in the direction of high torque, such as a high-torque motor.

[0037] The control module 3 is used to control the working state of the first motor 1 and the second motor 2. For example, a fixed voltage (determined according to the motor requirement) can be directly input to the first motor 1 and the second motor 2 to realize power supply. The control module 3 can be provided with a switch in the power supply path of the first motor 1 and the second motor 2 respectively to control the conduction and the closing, so as to control whether the first motor 1 and the second motor 2 work. Figure 13 As shown in the figure, the control module 3 can be realized by an MCU.

[0038] In an aspect, the control module can be a control unit including two sub-control units, i.e., a first control unit and a second control unit, the first control unit being connected with the first motor and the second control unit being connected with the second motor, respectively, for controlling the working state of the corresponding motor, wherein the working state includes but is not limited to starting, stopping, speed adjustment and frequency adjustment.

[0039] In another aspect, the control module can also be a control unit by applying a third control unit, the third control unit being connected with the first motor and the second motor, respectively, for simultaneously or separately controlling the working state of the corresponding motor, wherein the working state includes but is not limited to starting, stopping, speed adjustment and frequency adjustment.

[0040] Further, the control module can also include the first control unit, the second control unit and the third control unit, wherein the first control unit, the second control unit and the third control unit have the functions as described above, the first control unit, the second control unit and the third control unit form a backup relationship with each other, when the first control unit and / or the second control unit fails, the third control unit is used to control the working state of the first motor and the working state of the second motor.

[0041] Or, when the third control unit fails, the first control unit is used to control the working state of the first motor, and the second control unit is used to control the working state of the second motor.

[0042] Since the impeller structure and the air guide mode for realizing the dust collection and air blowing functions are quite different, and the motors used for dust collection and air blowing are different, only using a single motor to realize the suction and blowing integrated function has low efficiency, the double motors of the application work independently, solving the problem that one function is damaged and the other function cannot be used, and the single motor realizing the suction and blowing integrated structure is complex and has a high failure rate, the application can simultaneously consider the cost, portability and blowing and dust collection effect, and can also meet the scene that blowing and dust collection need to be enabled at the same time.

[0043] In an aspect, the first motor and the second motor are arranged in the same air duct, and the two respectively drive the blowing part and the dust collection part to realize the generation and pushing of airflow, taking the air inlet direction to the air outlet direction as a first direction, the first motor and the second motor are sequentially arranged based on the first direction, so that the first motor drives the blowing part to generate a first airflow, the first airflow is bound by the air duct and enters the air inlet direction of the second motor, and the second motor drives the dust collection part to generate a second airflow, and since the first airflow serves as a driving force, the generated second airflow is also stronger than the second airflow in the double air duct arrangement.

[0044] In another aspect, the first motor and the second motor are arranged in the same air duct, and the first motor and the second motor respectively drive the blowing component and the dust suction component to generate and push the air flow. The first direction is from the air inlet direction to the air outlet direction. The second motor and the first motor are sequentially arranged based on the first direction, so that the second motor drives the dust suction component to generate a second air flow, the second air flow is constrained by the air duct to enter the air inlet direction of the first motor, and the first motor drives the blowing component to generate a first air flow. Due to the second air flow as an auxiliary power, the generated first air flow is also higher than the first air flow in the double air duct arrangement.

[0045] In another aspect, the first motor and the second motor are arranged in two air ducts respectively, and the first motor and the second motor are independent of each other without interference. The first motor and the second motor can work independently or simultaneously to drive the blowing component and / or the dust suction component to work, and the generated first air flow and / or the second air flow do not interfere with each other.

[0046] In another aspect, at least one of the first motor and the second motor can be movable. By moving the position of the first motor or the second motor, the corresponding air ducts of the first motor and the second motor can be combined or split, so as to accurately control the air flow and the air suction effect, thereby improving the overall performance and efficiency of the device and adjusting the output intensity of the dust suction or blowing.

[0047] It can be understood that the entire control circuit can be powered by an energy storage module. The energy storage module includes at least one of a battery and a super capacitor. The battery includes at least one of a sodium battery, a lithium battery, and a lead-acid battery. According to the voltage size of each circuit or component in the circuit and the voltage protection requirement, the energy storage module can be derived into various required voltages through voltage transformation, switch isolation, etc. For example, the first voltage BAT and the second voltage (+5V) mentioned in the specific examples below are derived from the positive voltage (B+) of the energy storage module.

[0048] Reference Figure 2 In some embodiments, the control module 3 specifically controls the working state of the first motor 1 and the second motor 2 by controlling the driving module 4. The driving module 4 is connected with the first motor 1 and the second motor 2 respectively, and is used to obtain the first voltage BAT and output a power supply voltage to the first motor 1 and / or the second motor 2 under the control of the control module 3, so as to drive the first motor 1 and / or the second motor 2 to work.

[0049] Reference Figure 3 In some embodiments, the driving module 4 includes a first motor driving circuit 41 and a second motor driving circuit 42.

[0050] The first motor driving circuit 41, controlled by the control module 3, is connected with the first motor 1, and is used to obtain and output the power supply voltage required by the first motor 1 based on the first voltage BAT.

[0051] The second motor driving circuit 42, controlled by the control module 3, is connected with the second motor 2, and is used to obtain and output the power supply voltage required by the second motor 2 based on the first voltage BAT.

[0052] The basic principles of the first motor driving circuit 41 and the second motor driving circuit 42 are the same, and a H-bridge driving circuit can be used. In this embodiment, the driving mode of using PWM signals to control the driving tube is used for driving considering the application scene and cost. By adjusting the duty cycle of the PWM signal, the power supply voltage output to the motor can be adjusted, so as to realize motor speed regulation. As shown in Figure 5 The first motor driving circuit 41 includes a first driving tube Q15 controlled by the control module 3, and the second motor driving circuit 42 includes a second driving tube Q16 controlled by the control module 3. The first driving tube Q15 and the second driving tube Q16 can be MOS tubes, IGBTs, etc., and their control ends are connected to different pins of the control module 3 via resistors R71 and R75 respectively to receive the PWM signals input by the control module 3. As shown in Figure 5 The first driving tube Q15 and the second driving tube Q16 specifically use NMOS tubes in anti-parallel connection with diodes, so their control ends are also connected to ground (the ground mentioned in this application refers to the negative electrode of the energy storage module) via pull-down resistors R70 and R74 respectively, so as to ensure that the first driving tube Q15 and the second driving tube Q16 are in the off state by default.

[0053] In order to improve the stability of the power supply voltage output to the motor and ensure the safety of the motor, as shown in Figure 4 In some embodiments, the driving module 4 further includes a first output circuit 43 and a second output circuit 44.

[0054] The first output circuit 43 is arranged in the first motor driving circuit 41 (indicated by a dashed box in the figure) and connected with the first motor 1, and is configured to transmit the power supply voltage output by the first motor driving circuit 41 to the first motor 1. Specifically, the first driving tube Q15 is connected in series with the first output circuit 43 between the first voltage node and the ground, and the first voltage node refers to the node outputting the first voltage BAT. More specifically, the first output circuit 43 is connected in series between the drain of the first driving tube Q15 and the first voltage node. It can be understood that the order of the first driving tube Q15 and the first output circuit 43 can be exchanged, for example, the first output circuit 43 can also be connected in series between the source of the first driving tube Q15 and the ground.

[0055] The second output circuit 44 is arranged in the second motor driving circuit 42 and connected with the second motor 2, and is configured to transmit the power supply voltage output by the second motor driving circuit 42 to the second motor 2. The second output circuit 44 is the same as the first output circuit 43, and the second driving tube Q16 is also connected in series with the second output circuit 44 between the first voltage node and the ground. Other details can be referred to the first output circuit 43, which will not be described here.

[0056] The first output circuit 43 and the second output circuit 44 can include at least one of an overcurrent protection device, an output capacitor, and an anti-reverse filter diode.

[0057] Specifically, referring to Figure 5 In some embodiments, the first output circuit 43 includes an overcurrent protection device F3, an output capacitor C34, and an anti-reverse filter diode D8. MOT1+ and MOT1- represent nodes connected with the positive and negative poles of the first motor 1. The output capacitor C34 is connected in parallel with the corresponding first motor 1, i.e., the positive pole of the output capacitor C34 is connected with the positive pole of the first motor 1, the negative pole of the output capacitor C34 is connected with the negative pole of the first motor 1, and the two ends of the output capacitor C34 output the power supply voltage to the first motor 1. The anti-reverse filter diode D8 is connected in anti-parallel with the corresponding first motor 1, i.e., the positive pole of the anti-reverse filter diode D8 is connected with the negative pole of the first motor 1, and the negative pole of the anti-reverse filter diode D8 is connected with the positive pole of the first motor 1. The overcurrent protection device F3 can be a fuse, which is connected in series with the corresponding first motor 1. In this embodiment, the overcurrent protection device F3 is specifically arranged between the first voltage node and the positive end of the output capacitor C34. Of course, the overcurrent protection device F3 can also be connected between the positive pole of the first motor 1 and the positive end of the output capacitor C34, or other positions capable of limiting the current of the first motor 1.

[0058] The second output circuit 44 has the same structure as the first output circuit 43, including an overcurrent protection device F4, an output capacitor C36, and an anti-reverse filter diode D9. The specific connection relationship can be referred to the first output circuit 43, which will not be described here.

[0059] Reference Figure 6 In some embodiments, the driving module 4 comprises a third motor driving circuit 45, a first gating circuit 46 and a second gating circuit 47. Here, the third motor driving circuit 45 is shared by the two motors 1, 2.

[0060] The third motor driving circuit 45, controlled by the control module 3, is used to obtain and output the power supply voltage required by the first motor 1 and / or the second motor 2 based on the first voltage BAT. As in the previous embodiments, the third motor driving circuit 45 here is also driven by means of PWM signals to control the driving tube, such as Figure 8 The third motor driving circuit 43 comprises a third driving tube Q17 controlled by the control module 3. The third driving tube Q17 here also adopts an NMOS tube, and its control end (i.e. gate) is connected to the control module 3 via a resistor R79 to receive the PWM signal input by the control module 3, such as Figure 8 MOT1_IN. Here the third driving tube Q17 specifically adopts an NMOS tube in anti-parallel connection with a diode, so its control end is also connected to ground via a pull-down resistor R78, so as to ensure that the third driving tube Q17 is in a default off state.

[0061] The first gating circuit 46, controlled by the control module 3, is connected to the third motor driving circuit 45 and the first motor 1 respectively, and is used to control whether the power supply voltage output by the third motor driving circuit 45 is connected to the first motor 1. In some specific embodiments, the first gating circuit comprises a first gating switch Q19, which can be selected from various electronic switches such as transistors, MOS tubes, IGBTs, etc. Here the first gating switch Q19 is selected to be a PMOS tube in anti-parallel connection with a diode, and its gate is connected to the pin of the control module 3 via a resistor R85, and its gate and source are connected to a bias resistor R83.

[0062] The second gating circuit 47, controlled by the control module 3, is connected to the third motor driving circuit 45 and the second motor 2 respectively, and is used to control whether the power supply voltage output by the third motor driving circuit 45 is connected to the second motor 2. Similarly, the second gating circuit 47 comprises a second gating switch Q18. The selection and connection relationship of the second gating switch Q18 is referred to the first gating switch Q19, which will not be described here.

[0063] Similarly, in order to improve the stability of the power supply voltage output to the motor and ensure the safety of the motor, as shown in Figure 7 In some embodiments, the driving module 4 further comprises a third output circuit 48 and a fourth output circuit 49.

[0064] The third output circuit 48 is arranged in the first gating circuit 46 (as shown in the dashed box), and is connected with the first motor 1, and is used to transmit the power supply voltage from the third motor driving circuit 45 to the first motor 1.

[0065] The fourth output circuit 49 is arranged in the second gating circuit 47, and is connected with the second motor 2, and is used to transmit the power supply voltage from the third motor driving circuit 45 to the second motor 2.

[0066] Specifically, the first gating switch Q19 and the third output circuit 48 are connected in series to form a first branch (the positions of the first gating switch Q19 and the third output circuit 48 in the first branch can also be exchanged), and the second gating switch Q18 and the fourth output circuit 49 are connected in series to form a second branch (the positions of the second gating switch Q18 and the fourth output circuit 49 in the second branch can also be exchanged). The whole after the first branch and the second branch are connected in parallel is temporarily recorded as a branch group, and the branch group is connected in series with the third driving tube Q17 between the first voltage node and the ground. In some embodiments, the branch group is connected in series between the drain of the third driving tube Q17 and the first voltage node, and it can be understood that the order of the branch group and the third driving tube Q17 can be exchanged, such as the branch group can also be changed to be connected in series between the source of the third driving tube Q17 and the ground.

[0067] Similarly to the first output circuit 43 and the second output circuit 44, in some embodiments, the third output circuit 48 and the fourth output circuit 49 include at least one of an overcurrent protection device, an output capacitor, and an anti-reverse filter diode. For details, please refer to Figure 8 In the embodiment, the third output circuit 48 includes an overcurrent protection device F5, an output capacitor C38, and an anti-reverse filter diode D10. MOT1+ and MOT1- represent nodes connected with the positive and negative poles of the first motor 1. The output capacitor C38 is used to be connected in parallel with the corresponding first motor 1, that is, the positive pole of the output capacitor C38 is connected with the positive pole of the first motor 1, the negative pole of the output capacitor C38 is connected with the negative pole of the first motor 1, and the two ends of the output capacitor C38 output the power supply voltage to the first motor 1. The anti-reverse filter diode D10 is used to be connected in anti-parallel with the corresponding first motor 1, that is, the positive pole of the anti-reverse filter diode D10 is connected with the negative pole of the first motor 1, and the negative pole of the anti-reverse filter diode D10 is connected with the positive pole of the first motor 1. The overcurrent protection device F5 can be a fuse, which is connected in series with the corresponding first motor 1. In the embodiment, the source of the first gating switch Q19 is connected with the first voltage, and the overcurrent protection device F5 is specifically arranged between the drain of the first gating switch Q19 and the positive end of the output capacitor C38. Of course, the overcurrent protection device F5 can also be connected between the positive pole of the first motor 1 and the positive end of the output capacitor C38, or other positions that can exclusively limit the current of the first motor 1.

[0068] The fourth output circuit 49 has the same structure as the third output circuit 48, including the overcurrent protection device F6, the output capacitor C39, and the reverse prevention filter diode D11. For details, refer to the third output circuit 48, which will not be repeated here.

[0069] Reference Figure 9 In some embodiments, the motor state detection module 5 is further included. It can be understood that, Figure 9 Only the structure related to the motor state detection is shown. For example, Figure 9 The motor state detection module 5 is connected to the control module 3, for detecting the state of the first motor 1 and the second motor 2 and feeding back the motor detection signal to the control module 3. The control module 3 is used to adjust the working state of the corresponding motor when the motor detection signal indicates that the motor is abnormal, such as controlling to stop outputting the power supply voltage to the corresponding motor or adjusting the power supply voltage output to the corresponding motor.

[0070] In some embodiments, in combination Figure 9 , Figure 5 , Figure 13 The motor detection signal includes a first motor current detection signal (MOT1_ISN) representing the current flowing through the first motor 1 and a second motor current detection signal (MOT2_ISN) representing the current flowing through the second motor 2.

[0071] Correspondingly, the motor state detection module 5 includes a first motor current detection circuit 51 and a second motor current detection circuit 52.

[0072] The first motor current detection circuit 51, for example, Figure 5 It is arranged in the first motor drive circuit 41, for detecting the current provided by the first motor drive circuit 41 to the first motor 1, and outputting the first motor current detection signal MOT1_ISN to the control module 3, so that the control module 3 determines whether the first motor 1 has a motor current abnormality based on the first motor current detection signal MOT1_ISN. The control module 3 is used to control the first motor 1 to stop working when the first motor current detection signal MOT1_ISN indicates that the first motor 1 has a current abnormality (such as exceeding the current threshold of the first motor 1).

[0073] The second motor current detection circuit 52, for example, Figure 5 It is arranged in the second motor drive circuit 42, for detecting the current provided by the second motor drive circuit 42 to the second motor 2, and outputting the second motor current detection signal MOT2_ISN to the control module 3, so that the control module 3 determines whether the second motor 2 has a motor current abnormality (such as exceeding the current threshold of the second motor 2) based on the second motor current detection signal MOT2_ISN. The control module 3 is used to control the second motor 2 to stop working when the second motor current detection signal MOT2_ISN indicates that the second motor 2 has a current abnormality.

[0074] The temperature detection, current detection, and voltage detection involved in the embodiments of this application can be implemented using a voltage divider circuit. For example... Figure 11 As shown in (1), the voltage divider circuit consists of two resistors connected in series. The free ends of one resistor and the other resistor can be used as two input terminals, IN1 and IN2, connected in series to the circuit to be detected. The node between the two resistors is used as the feedback terminal OUT, which outputs the detection signal. Alternatively, the positions of one input terminal (e.g., IN2) and the feedback terminal OUT can be interchanged, such as... Figure 11 As shown in (2), one of the resistors is used as two input terminals IN1 and IN2, and the free end of the other resistor is used as the feedback terminal OUT.

[0075] In some embodiments, such as Figure 5 The first motor current detection circuit 51 includes a first current detection voltage divider circuit, which is located in the first motor drive circuit 41. The feedback terminal of the first current detection voltage divider circuit feeds back the first motor current detection signal MOT1_ISN to the control module 3. Figure 5 In the circuit, R72 and R73 form the first current-sensing voltage divider circuit. The two ends of R72 are connected in series to the path of the first driving transistor Q15, thus realizing the current sensing voltage divider circuit in the first motor drive circuit 41. The free end of R73 serves as the feedback terminal, which is also grounded via capacitor C35 for filtering. It is understood that the location of the first current-sensing voltage divider circuit is not limited to... Figure 5 The source and ground of the first driving transistor Q15 shown can be in other locations, as long as they are in the current path of the first motor 1.

[0076] Similarly, the second motor current detection circuit 52 includes a second current detection voltage divider circuit, which is located in the second motor drive circuit 42. The feedback terminal of the second current detection voltage divider circuit feeds back the second motor current detection signal MOT2_ISN to the control module 3. The specific structure of the second motor current detection circuit 52 is the same as that of the first motor current detection circuit 51, and will not be described again here.

[0077] In some embodiments, combined with Figure 8 , Figure 13 The motor detection signal includes a third motor current detection signal representing the current flowing through the first motor 1 and the second motor 2. Figure 8The control module 3 (MOT1_ISN) is used to control the first motor 1 and / or the second motor 2 to stop working when the third motor current detection signal MOT1_ISN indicates that the current of the first motor 1 and / or the second motor 2 is abnormal. For example, if only the first motor 1 is working, the third motor current detection signal MOT1_ISN needs to be compared with the current threshold of the first motor 1 to determine whether it is abnormal; if only the second motor 2 is working, the third motor current detection signal MOT1_ISN needs to be compared with the current threshold of the second motor 2 to determine whether it is abnormal; if both the first motor 1 and the second motor 2 are working, the third motor current detection signal MOT1_ISN can be compared with the sum of the current thresholds of the first motor 1 and the second motor 2 to determine whether it is abnormal.

[0078] Correspondingly, the motor status detection module 5 includes a third motor current detection circuit 53, which is located in the third motor drive circuit 45. It is used to detect the current output by the third motor drive circuit 45 to the first motor 1 and / or the second motor 2 and generate a third motor current detection signal MOT1_ISN to the control module 3, so that the control module 3 can determine whether the first motor 1 and / or the second motor 2 have abnormal motor current based on the third motor current detection signal MOT1_ISN.

[0079] same Figure 5 The first motor current detection circuit 51 and the second motor current detection circuit 52 are described in the text. Figure 8 The third motor current detection circuit 53 includes a third current detection voltage divider circuit, which is located in the third motor drive circuit 45. The feedback terminal of the third current detection voltage divider circuit feeds back the third motor current detection signal MOT1_ISN to the control module 3.

[0080] In some embodiments, combined with Figure 9 , Figure 10 , Figure 13 The motor detection signals include a first motor temperature detection signal (MOT1_NTC) representing the temperature of the first motor and a second motor temperature detection signal (MOT2_NTC) representing the temperature of the second motor.

[0081] Correspondingly, the motor status detection module 5 includes a first motor temperature detection circuit 54 and a second motor temperature detection circuit 55.

[0082] The first motor temperature detection circuit 54 corresponds to the first motor 1, is used for detecting the temperature of the first motor 1, and outputs a first motor temperature detection signal MOT1_NTC to the control module 3, so that the control module 3 determines whether the first motor 1 has a motor temperature abnormality based on the first motor temperature detection signal MOT1_NTC, and the control module 3 is used to control the first motor 1 to stop working when the first motor temperature detection signal MOT1_NTC indicates that the first motor 1 has a temperature abnormality.

[0083] The second motor temperature detection circuit 55 corresponds to the second motor 2, is used for detecting the temperature of the second motor 2, and outputs a second motor temperature detection signal MOT2_NTC to the control module 3, so that the control module 3 determines whether the second motor 2 has a motor temperature abnormality based on the second motor temperature detection signal MOT2_NTC, and the control module 3 is used to control the second motor 2 to stop working when the second motor temperature detection signal MOT2_NTC indicates that the second motor 2 has a temperature abnormality.

[0084] Specifically, the first motor temperature detection circuit 54 includes a first motor temperature sensor NTC1 and a first temperature detection voltage division circuit. The first temperature detection voltage division circuit includes resistors R9 and R10, and a filter capacitor C5. The first motor temperature sensor NTC1 is installed on the first motor 1 or in the environment where the first motor 1 is located (the position that can best reflect the motor temperature is selected according to experience), and the first temperature detection voltage division circuit is connected in series with the first motor temperature sensor NTC1 between a second voltage node and the ground, wherein the second voltage node refers to a node outputting a second voltage (specifically +5V in this embodiment). The feedback end of the first temperature detection voltage division circuit feeds back the first motor temperature detection signal MOT1_NTC to the control module 3.

[0085] Similarly, the second motor temperature detection circuit 55 includes a second motor temperature sensor NTC2 and a second temperature detection voltage division circuit. The second temperature detection voltage division circuit includes resistors R11 and R12, and a filter capacitor C6. The second motor temperature sensor NTC1 is installed on the second motor 2 or in the environment where the second motor 2 is located, and the second temperature detection voltage division circuit is connected in series with the second motor temperature sensor NTC1 between the second voltage node and the ground, and the feedback end of the second temperature detection voltage division circuit feeds back the second motor temperature detection signal MOT2_NTC to the control module 3.

[0086] Figure 5 And Figure 8 The two drive schemes have advantages. Figure 5 The scheme needs two NMOS, the current detection is two-way, and the PWM signal output to the drive tube is also two-way, which can control the two motors 1 and 2 through two PWM signals respectively, can realize the simultaneous operation of the two motors 1 and 2 with different powers, and can realize more different power combinations. Figure 8The driving scheme of the motor driver needs 2 PMOS and 1 NMOS, which is a PWM control of two motors. If the two motors are started at the same time, they run at the same power at the same time. Since there is only one current detection, the PWM signal output to the driving tube is also only one, and the occupied ADC acquisition port is relatively less, which is more advantageous in the selection of the MCU of the control module 3.

[0087] In some embodiments, as Figure 12 , the control circuit further comprises an input module 6 connected with the control module 3, for obtaining and feeding back operation signals of the user for starting and stopping the motors and speed regulating the motors to the control module 3, so that the control module 3 controls starting and stopping and speed regulating the first motor 1 and the second motor 2 based on the operation signals.

[0088] In some embodiments, as Figure 13 , the input module 6 comprises:

[0089] The first button S2 is connected with the control module 3, for obtaining and feeding back operation signals KEY_2 representing starting and stopping and speed regulating the first motor 1;

[0090] The second button S3 is connected with the control module 3, for obtaining and feeding back operation signals KEY_3 representing starting and stopping and speed regulating the second motor 2.

[0091] It can be understood that the signals KEY_2 and KEY_3 can be only starting / closing signals of the motor 1 and the motor 2, or can be motor speed shifting signals. For example, when S1 is pressed, KEY_2 is flipped, the motor 1 is started, and different signals KEY_2 corresponding to different times of pressing S2 are used to control the multi-gear speed of the motor 1. The control process of the motor 2 is the same.

[0092] In some embodiments, the input module 6 can further comprise:

[0093] The third button is connected with the control module 3, for obtaining and feeding back operation signals representing starting and stopping the first motor 1 and the second motor 2;

[0094] The fourth button is connected with the control module 3, for obtaining and feeding back operation signals representing speed regulating the first motor 1 and the second motor 2.

[0095] For example, the first motor 1 is started by pressing the third button, and the speed is regulated by pressing the fourth button.

[0096] In some embodiments, as Figure 12 , the control circuit further comprises a prompt module 7 connected with the control module 3, for outputting prompt information in at least one of the following ways under the control of the control module 3 to prompt the state of the first motor 1, the second motor 2 and the energy storage module: light, screen display, vibration, sound. In some embodiments, asFigure 13 The display used by the prompt module 7 is not limited in type, as long as it can realize the display function. The working voltage of the display selected here is the second voltage, and DIN and SCLK are display pins, which are actually determined by the actual display pins, and are not limited here.

[0097] In some embodiments, as Figure 12 The control circuit further comprises an illumination module 12 connected to the control module 3 for realizing the illumination function under the control of the control module 3. As Figure 13 The illumination module 12 is mainly composed of a light-emitting diode LED1, a triode Q14, and resistors R68, R67, and R69. The positive electrode of the light-emitting diode LED1 is connected to a third voltage node VBUS1 via the resistor R67, and the third voltage node VBUS1 will be explained later. The negative electrode of the light-emitting diode LED1 is grounded via the triode Q14, and the base of the triode Q14 is connected to the control module 3 via the resistor R69. The control module 3 controls the triode Q14 to realize the opening or closing of the illumination function. It can be understood that a dedicated illumination switch can be additionally configured to be connected to the MCU, and pressing the illumination switch triggers the MCU to turn on the illumination function. The power-on button can also be directly used, as Figure 13 LIGHT_EN is the control signal of the illumination module 12, which is controlled by the MCU, specifically the signal KEY1 triggered by the power-on button S1 mentioned later to control the opening or closing. It can be understood that the LED1 in the circuit is not limited to a light-emitting device, as long as it can realize the illumination function.

[0098] In some embodiments, as Figure 12 The control circuit further comprises an energy storage management module 8 for controlling the charging and discharging of the energy storage module, which includes a power supply control switch circuit 81, an energy storage charging and discharging protection circuit 82, and a voltage stabilizing circuit 83.

[0099] As Figure 14 The power supply control switch circuit 81 mainly includes a first general switch Q4 and a second general switch Q5. The first end of the first general switch Q4 is connected to the positive electrode of the energy storage module, and the second end of the first general switch Q4 serves as a first voltage node for outputting a first voltage BAT. The first end of the second general switch Q5 is connected to the first voltage node. The second end of the second general switch is mainly connected to a circuit that can charge the energy storage module, such as the energy storage charging module 9 mentioned later. That is, the first general switch Q4 is a switch that controls the discharging of the energy storage module to the outside, and the second general switch is a switch that controls the charging of the energy storage module. As Figure 14, BAT+ is the charging end voltage of the energy storage module, BAT is the discharging end voltage of the energy storage module, i.e. the first voltage mentioned above, and B+ is the positive electrode voltage of the battery cell directly connected to the energy storage module. The three voltages B+, BAT, and BAT+ are separated by two MOS tubes Q4 and Q5, and the actual voltage values are consistent.

[0100] As Figure 14 , the voltage stabilizing circuit 83 is connected to the first voltage node and is used to reduce the first voltage BAT to obtain the second voltage required for the operation of the devices in the circuit. For example, the second voltage is +5V, and the temperature detection and screen display both require +5V voltage. The voltage stabilizing circuit 83 can be implemented by using an LDO chip.

[0101] As Figure 14 , the energy storage charging and discharging protection circuit 82 is connected to the energy storage module and is used to detect the charging and discharging states of the energy storage module and generate corresponding charging protection signals and discharging protection signals when the charging and discharging are abnormal. In the present embodiment, the energy storage module is a lithium battery composed of multiple battery cells, and therefore the energy storage charging and discharging protection circuit 82 uses a lithium protection IC. The lithium protection IC is not limited in type selection, and can achieve overcharge, overdischarge, and overcurrent protection.

[0102] The first total switch Q4 is directly or indirectly controlled by the power-on signal (such as KEY1) and the discharging protection signal (DO). For example, the control end of the first total switch Q4 is grounded via the triode Q3 and the MOS tube Q7 in sequence, and the triode Q3 has the switch-off button S1 connected across its two ends. The button S1 is the total switch of the entire control circuit. Once S1 is pressed, Q4 is turned on, the entire circuit is powered on, the energy storage management module 8 is operated, the voltage stabilizing circuit 83 is powered, and VT_EN continuously outputs a high level. Here, the switch-on signal KEY1 generated by the pressing of S1 is given to the MCU, which can also control the lighting lamp to be turned on or off. The control end of Q7 is connected to the discharging protection signal. Once the discharging is abnormal, Q7 will be controlled to be disconnected, and then Q4 will be disconnected, and the battery cannot be discharged. The control end of Q3 is connected to the control module 3, and the control module 3 can also control Q3 based on other conditions, such as the energy storage state detection circuit part to be mentioned later. If the battery is detected to be abnormal, Q3 needs to be controlled to be disconnected.

[0103] The second total switch Q5 is directly or indirectly controlled by the charging protection signal (CO). For example, the control end of the second total switch Q5 is grounded via the MOS tube Q6, and the control end of Q6 is connected to the charging protection signal. Once the charging is abnormal, Q6 will be controlled to be disconnected.

[0104] In some embodiments, as Figure 14The energy storage management module further comprises an energy storage state detection circuit for detecting the state of the energy storage module and feeding back an energy storage detection signal to the control module. The control module is further configured to control the power supply control switch circuit to be disconnected when the energy storage detection signal indicates that the energy storage module is abnormal.

[0105] In some embodiments, the energy storage state detection circuit comprises an energy storage temperature detection circuit 84 connected to the control module, for detecting the temperature of the energy storage module and generating an energy storage temperature detection signal BAT_NTC to the control module 3, so that the control module determines whether the energy storage module has a temperature abnormality based on the energy storage temperature detection signal BAT_NTC. The energy storage temperature detection circuit 84 comprises a temperature sensor NTC3 and a voltage divider circuit composed of resistors R13 and R14. The temperature sensor NTC3 is attached to the battery. In some embodiments, the temperature detection principle can refer to the motor temperature detection part.

[0106] In some embodiments, the energy storage state detection circuit comprises a cell voltage detection circuit 85 connected to each cell, for detecting the voltage of each cell and feeding back cell voltage detection signals (BT1_VSN~BT4_VSN) to the control module, so that the control module determines whether the cell has a voltage abnormality based on the cell voltage detection signals (BT1_VSN~BT4_VSN). As shown in FIG. 8, the cell voltage detection circuit 85 comprises resistors R31~R36 and capacitors C13~C16. Figure 14 BAT_EN is a trigger signal for starting cell voltage acquisition, controlled by the MCU. BT1_VSN~BT4_VSN are single-cell voltage detection signals. Taking BT1_VSN as an example, the fourth cell voltage acquisition value is obtained through voltage division by R33 and R35, and is transmitted to the MCU through an RC filter composed of R34 and C14. If any of BT1_VSN~BT4_VSN exceeds the corresponding threshold value, it is considered to be abnormal.

[0107] In some embodiments, as shown in FIG. 9, Figure 12 The control circuit further comprises an energy storage charging module 9, as shown in FIG. 10, Figure 15 One end of the energy storage charging module 9 is connected to the second end of the second main switch Q5, and the other end is used to connect an external power supply, and the external power supply is used to charge the energy storage module through the second main switch Q5 and the first main switch Q4. As shown in FIG. 11, Figure 15 The Type-C interface is used to connect an external power supply. CHA_PWM is a control signal for the MCU to control the charging of the Type-C port. VIN_SCAN is a voltage detection signal for charging overvoltage protection. CHA_ISN is a current detection signal for charging overcurrent protection.

[0108] In some embodiments, as shown in FIG. 12, Figure 12, the control circuit further comprises an energy storage discharging module 10. One end of the energy storage discharging module 10 is connected to the first voltage node, and the other end is used to connect an external device, for outputting a voltage reduced from the first voltage to the external device for charging (similar to realizing the function of a power bank). For example Figure 16 , USB A is an interface for connecting an external device, USB EN is a control signal for the MCU to control the discharge of USB A, and USB ISN is a detection signal of the current during the discharge of USB A, used for overcurrent protection during the discharge. VBUS1 represents the third voltage node, and the voltage provided by the third voltage node can be used for lighting.

[0109] Taking a double-drive circuit as an example, in combination with Figure 5 , Figure 10 , Figure 13 , Figure 14 The following is a complete and brief description of a feasible operation process of the circuit: MOT1_IN is a control signal of motor 1, and MOT2_IN is a control signal of motor 2, that is, both motors are controlled by the MCU; MOT1_ISN is a first motor current detection signal of motor 1, and MOT2_ISN is a second motor current detection signal of motor 2, and the detection signals are all fed back to the MCU.

[0110] MOT1_NTC is a first motor temperature detection signal of motor 1, MOT2_NTC is a second motor temperature detection signal of motor 2, and BAT_NTC is a battery temperature detection signal, and the detection signals are all fed back to the MCU. When the power-on key S1 is pressed, the KEY1 signal is valid, the product is powered on, the battery management module 8 operates, and the control voltage stabilizing circuit 83 supplies power. When S2 is pressed, the KEY_2 signal is valid, and motor 1 starts, which can be controlled by KEY_2 to multiple speeds. When the temperature of motor 1 is too high, MOT1_NTC is fed back to the MCU, the MCU controls motor 1 to be turned off, and the display makes a corresponding prompt (the prompt can also be enhanced by a buzzer to improve the prompting effect, and the specific prompting scheme is not limited). When motor 1 overflows, MOT1_ISN will be fed back to the MCU, the MCU controls motor 1 to be turned off, and the display makes a corresponding prompt. Press S3, KEY_3 is valid, motor 2 starts, and the working process is the same as that of motor 1, which will not be repeated here.

[0111] Referring to Figure 17 , in some embodiments, an emergency starting current output path 11 is further included, which is used to connect the energy storage module and the vehicle device, so as to output power from the energy storage module to the vehicle device for starting the vehicle device. For example, the emergency starting current output path 11 can be a lighter clip.

[0112] In some embodiments, an emergency starting control circuit 13 can also be added, connected to or arranged in the emergency starting circuit output path 11, for controlling the working state of the emergency starting current output path 11, such as a switch connected in series in the striking clamp. In this way, the present application can realize the emergency starting, blowing, and dust collection three-in-one.

[0113] Based on the same inventive concept, the present application also designs a dust collection and blowing device, which includes a shell, a blowing component, a dust collection component, and a control circuit of any of the preceding. At least part of the structure of the blowing component, the dust collection component, or the control circuit is arranged in the shell. For example, the blowing component can be arranged in the shell or outside the shell.

[0114] Optionally, the blowing component, the dust collection component, and the control circuit are all arranged in the same shell; or the dust collection and blowing device includes a main machine and a battery clamp cable, the battery clamp cable is detachably or fixedly connected to the main machine, the blowing component, the dust collection component, and part of the control circuit are arranged in the shell of the main machine, part of the control circuit can include a first motor, a second motor, a control module, a driving circuit, etc., and an emergency starting control circuit is arranged in the shell of the battery clamp cable.

[0115] In order to avoid the influence of air flow on each other and ensure the blowing and dust collection effects, in some embodiments, the shell includes a first air duct and a second air duct, the first air duct is arranged with the first motor and the blowing component, and the second air duct is arranged with the second motor and the dust collection component.

[0116] In one aspect, by moving the first air duct and / or the second air duct, the first air duct and the second air duct are combined to form a third air duct, the third air duct is arranged with the first motor, the blowing component, the second motor, and the dust collection component. The air flow generated by the work of the two motors is integrated and converged through the third air duct, improving the dust collection or blowing efficiency.

[0117] Optionally, the dust collection and blowing device further includes a dust collection port and a dust collection port accessory, a dust collection interface accessory is used to connect the dust collection port and the dust collection port accessory, and the connection mode includes magnetic attraction connection, buckle connection, screw connection, or fixed connection, etc. The dust collection interface accessory is provided with a first opening and a second opening, the second opening is relatively narrow, the first opening is used to connect the dust collection port, and the second opening faces outward, so that the external air flow enters through the second opening and carries dust and sundries into the dust collection interface accessory. Further, the dust collection port accessory can also be internally provided with a filter module, including a filter screen, a filter bag, etc., to collect dust and sundries.

[0118] Optionally, the dust-suction air-blowing device further comprises an air-blowing port and an air-blowing port accessory, the air-blowing port accessory is used for connecting the air-blowing port of the dust-suction air-blowing device, and the connection mode comprises magnetic attraction connection, buckle connection, threaded connection or fixed connection and the like. The dust-suction port accessory is provided with a third opening and a fourth opening, the third opening is used for connecting the air-blowing port, and the fourth opening faces outward. When the dust-suction air-blowing device works, the airflow of the air-blowing port flows from the third opening to the fourth opening and is blown out to the outside through the fourth opening. Optionally, the fourth opening is narrowed relative to the third opening, so that the air outlet is more concentrated, or the fourth opening is widened relative to the third opening, so that the air outlet range is larger.

[0119] In some embodiments, the dust-suction air-blowing device is a handheld device or a portable device.

[0120] In summary, the control circuit and the dust-suction air-blowing device have the following beneficial effects: two motors are configured to drive the air-blowing component and the dust-suction component respectively, so that the air-blowing effect and the dust-suction effect can be realized, and the two motors are configured separately, so that the realization of the air-blowing and dust-suction effects can be guaranteed. Therefore, the cost, portability and air-blowing and dust-suction effects can be considered simultaneously, and the scene requiring simultaneous use of air-blowing and dust-suction can also be met.

[0121] It should be noted that the "connection" or "connection" described in the present application includes not only the direct connection of two entities, but also the indirect connection through other entities, unless otherwise specified.

[0122] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the present application are only for the purpose of describing specific embodiments of the present application and are not intended to limit the present application.

[0123] The terms containing ordinal numbers, such as "first", "second" and the like, used in the present specification can be used to describe various constituent elements, but these constituent elements are not limited by these terms. The purpose of using these terms is only to distinguish one constituent element from other constituent elements. For example, without departing from the scope of the present application, the first constituent element can be named as the second constituent element, and similarly, the second constituent element can also be named as the first constituent element. The term "and / or" used in the present application includes any and all combinations of one or more related listed items.

[0124] The switch of the present application includes various equivalent switch electronic devices, and is not limited to MOS tubes and triodes.

[0125] In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application can be practiced without these specific details. In other instances, well-known methods, structures and techniques have not been described in detail in order to avoid obscuring the description. Similarly, while operations are presented in the

[0126] It should be noted that the foregoing embodiments can be described in terms of specific embodiments, however, a person skilled in the art will recognize that the application is not limited to the embodiments described, but can be practiced with modification and alteration within the scope of the appended claims. The description is thus to be regarded as illustrative rather than restrictive. Many modifications and variations of the application can be possible in light of the above teachings without departing from the scope of the forthcoming claims. It is, therefore, to be understood that what is described above is illustrative of the application and the scope of the application should be given the broadest interpretation of the claims and is not limited to the specific embodiments set forth in the description above.

[0127] The embodiments of the application described above are intended to be illustrative only and in no way limit the scope of the application. Various modifications and changes can be made thereto by those skilled in the art which fall within the scope of the application as described by the appended claims. It is intended that all such modifications and changes be within the scope of the application as claimed.

Claims

1. A control circuit, characterized by The application relates to a vehicle power supply system, comprising: a first motor connected to a blowing component and used to drive the blowing component to generate a first airflow; a second motor connected to a dust suction component and used to drive the dust suction component to generate a second airflow; a control module used to control the working states of the first motor and the second motor.

2. The circuit of claim 1, wherein, The first motor and the second motor are arranged in a same air duct; wherein the first motor drives the blowing component to generate the first airflow, and the second motor drives the dust suction component to generate the second airflow based on the first airflow; or the second motor drives the dust suction component to generate the second airflow, and the first motor drives the blowing component to generate the first airflow based on the second airflow. The first motor and the second motor are arranged in double air ducts; wherein the first motor is arranged in a first air duct, and the second motor is arranged in a second air duct; 3. The circuit of claim 1, wherein, the first motor drives the blowing component to generate the first airflow and / or the second motor drives the dust suction component to generate the second airflow. The first motor and the second motor are arranged in the same air duct or in double air ducts in a selectable manner.

4. The circuit of any one of claims 2 or 3, wherein, The control module comprises:

5. The circuit of claim 1, wherein, a first control unit used to control the working state of the first motor, wherein the first control unit is connected to the first motor; a second control unit used to control the working state of the second motor, wherein the second control unit is connected to the second motor. The control module comprises:

6. The circuit of claim 1, wherein, a third control unit used to control the working states of the first motor and the second motor. The application further comprises:

7. The circuit of claim 1, wherein, an emergency starting current output path used to connect an energy storage module and a vehicle device, so that the energy storage module outputs power supply to the vehicle device to start the vehicle device; the energy storage module is further used to supply power to the first motor and the second motor. The application further comprises:

8. The circuit of claim 7, wherein, an emergency starting control circuit connected to or arranged in the emergency starting current output path and used to control the working state of the emergency starting current output path. The application further comprises:

9. The circuit of claim 1, wherein, a driving module connected to the first motor and the second motor respectively and used to obtain a first voltage and output a power supply voltage to the first motor and / or the second motor under the control of the control module, so as to drive the first motor and / or the second motor to work. The driving module comprises:

10. The circuit of claim 9, wherein, a first motor driving circuit connected to the first motor and controlled by the control module, and used to obtain and output a power supply voltage required by the first motor based on the first voltage; a second motor driving circuit connected to the second motor and controlled by the control module, and used to obtain and output a power supply voltage required by the second motor based on the first voltage. The driving module further comprises 11. The circuit of claim 9, wherein, a first output circuit arranged in the first motor driving circuit and connected to the first motor, and used to transmit the power supply voltage output by the first motor driving circuit to the first motor; a second output circuit arranged in the second motor driving circuit and connected to the second motor, and used to transmit the power supply voltage output by the second motor driving circuit to the second motor. ​ 12. The circuit of claim 11, wherein, the first motor drive circuit comprises a first drive tube controlled by the control module, the first drive tube and the first output circuit are connected in series between a first voltage node and ground; the second motor drive circuit comprises a second drive tube controlled by the control module, the second drive tube and the second output circuit are connected in series between the first voltage node and ground; wherein the first voltage node is a node outputting the first voltage.

13. The circuit of claim 9, wherein, the drive module comprises: a third motor drive circuit controlled by the control module, for obtaining and outputting a supply voltage required by the first motor and / or the second motor based on the first voltage; a first gating circuit controlled by the control module, connected with the third motor drive circuit and the first motor respectively, for controlling whether the supply voltage output by the third motor drive circuit is connected to the first motor; a second gating circuit controlled by the control module, connected with the third motor drive circuit and the second motor respectively, for controlling whether the supply voltage output by the third motor drive circuit is connected to the second motor.

14. The circuit of claim 13, wherein, the drive module further comprises: a third output circuit arranged in the first gating circuit and connected with the first motor, for transmitting the supply voltage accessed by the first gating circuit from the third motor drive circuit to the first motor; a fourth output circuit arranged in the second gating circuit and connected with the second motor, for transmitting the supply voltage accessed by the second gating circuit from the third motor drive circuit to the second motor.

15. The circuit of claim 14, wherein, the third motor drive circuit comprises a third drive tube controlled by the control module, the first gating circuit comprises a first gating switch, and the second gating circuit comprises a second gating switch; the first gating switch and the third output circuit are connected in series to form a first branch, the second gating switch and the fourth output circuit are connected in series to form a second branch, and the first branch and the second branch are connected in parallel and then connected in series with the third drive tube between the first voltage node and ground; wherein the first voltage node is a node outputting the first voltage.

16. The circuit of claim 9, wherein, the drive module comprises two output circuits corresponding to the first motor and the second motor respectively, and the output circuit comprises at least one of an overcurrent protection device, an output capacitor, and an anti-reverse filter diode, wherein: the output capacitor is connected in parallel to the corresponding motor, and the output capacitor outputs the supply voltage across its terminals; the anti-reverse filter diode is connected in anti-parallel to the corresponding motor, and the overcurrent protection device is connected in series to the corresponding motor.

17. The circuit of claim 1, wherein, further comprising: a motor state detection module connected with the control module, for detecting the state of the first motor and the second motor and feeding back a motor detection signal to the control module; the control module is configured to adjust the working state of the corresponding motor when the motor detection signal indicates that the motor is abnormal.

18. The circuit of claim 17, wherein, the adjustment of the working state of the corresponding motor comprises: controlling to stop outputting the supply voltage to the corresponding motor or adjusting the supply voltage output to the corresponding motor.

19. The circuit of claim 17, wherein, The motor state detection module comprises: A first motor temperature detection circuit corresponding to the first motor, configured to detect the temperature of the first motor and output a first motor temperature detection signal to the control module; A second motor temperature detection circuit corresponding to the second motor, configured to detect the temperature of the second motor and output a second motor temperature detection signal to the control module; The control module is configured to control the first motor to stop working when the first motor temperature detection signal indicates that the temperature of the first motor is abnormal, and control the second motor to stop working when the second motor temperature detection signal indicates that the temperature of the second motor is abnormal.

20. The circuit of claim 19, wherein The first motor temperature detection circuit comprises a first motor temperature sensor and a first temperature detection voltage dividing circuit, the first motor temperature sensor is installed on the first motor or in the environment where the first motor is located, and the first temperature detection voltage dividing circuit is connected in series with the first motor temperature sensor between a second voltage node and the ground, and a feedback end of the first temperature detection voltage dividing circuit feeds back the first motor temperature detection signal to the control module; The second motor temperature detection circuit comprises a second motor temperature sensor and a second temperature detection voltage dividing circuit, the second motor temperature sensor is installed on the second motor or in the environment where the second motor is located, and the second temperature detection voltage dividing circuit is connected in series with the second motor temperature sensor between the second voltage node and the ground, and a feedback end of the second temperature detection voltage dividing circuit feeds back the second motor temperature detection signal to the control module; The second voltage node refers to a node outputting a second voltage.

21. The circuit of claim 17, wherein, Further comprising a driving module, the driving module comprises a first motor driving circuit for driving the first motor and a second motor driving circuit for driving the second motor, and the first motor driving circuit and the second motor driving circuit are respectively configured to obtain the required supply voltage of the first motor and the second motor based on a first voltage; The motor state detection module comprises: A first motor current detection circuit arranged in the first motor driving circuit, configured to detect the current provided by the first motor driving circuit to the first motor and output a first motor current detection signal to the control module, so that the control module determines whether the first motor has a motor current abnormality based on the first motor current detection signal; A second motor current detection circuit arranged in the second motor driving circuit, configured to detect the current provided by the second motor driving circuit to the second motor and output a second motor current detection signal to the control module, so that the control module determines whether the second motor has a motor current abnormality based on the second motor current detection signal.

22. The circuit of claim 21, wherein The first motor current detection circuit comprises a first current detection voltage dividing circuit, the first current detection voltage dividing circuit is arranged in the first motor driving circuit, and a feedback end of the first current detection voltage dividing circuit feeds back the first motor current detection signal to the control module; The second motor current detection circuit comprises a second current detection and voltage division circuit, which is arranged in the second motor driving circuit, and a feedback end of the second current detection and voltage division circuit feeds back the second motor current detection signal to the control module.

23. The circuit of claim 17, wherein, The driving module comprises a third motor driving circuit shared by the first motor and the second motor, and the third motor driving circuit is used to obtain the required supply voltage of the first motor and / or the second motor based on a first voltage. The motor state detection module comprises: The third motor current detection circuit is arranged in the third motor driving circuit, and is used to detect the current output by the third motor driving circuit to the first motor and / or the second motor, and generate a third motor current detection signal to the control module, so that the control module determines whether the first motor and / or the second motor has a motor current abnormality based on the third motor current detection signal.

24. The circuit of claim 23, wherein The third motor current detection circuit comprises a third current detection and voltage division circuit, which is arranged in the third motor driving circuit, and a feedback end of the third current detection and voltage division circuit feeds back the third motor current detection signal to the control module.

25. The circuit of claim 1, wherein, Further comprising: The input module is connected with the control module, and is used to obtain operation signals of the user for starting and stopping the motors and for motor speed regulation, and feed back the operation signals to the control module, so that the control module controls starting and stopping of the first motor and the second motor and speed regulation of the first motor and the second motor based on the operation signals.

26. The circuit of claim 25, wherein, The input module comprises: The first button is connected with the control module, and is used to obtain and feed back operation signals representing starting and stopping and speed regulation of the first motor; The second button is connected with the control module, and is used to obtain and feed back operation signals representing starting and stopping and speed regulation of the second motor.

27. The circuit of claim 25, wherein, The input module comprises: The third button is connected with the control module, and is used to obtain and feed back operation signals representing starting and stopping of the first motor and the second motor; The fourth button is connected with the control module, and is used to obtain and feed back operation signals representing speed regulation of the first motor and the second motor.

28. The circuit of claim 1, wherein, Further comprising: The prompt module is connected with the control module, and is used to output prompt information in at least one of the following manners under the control of the control module, so as to prompt the states of the first motor, the second motor and the energy storage module: light, screen display, vibration and sound.

29. The circuit of claim 1, wherein, Further comprising an energy storage management module connected with the energy storage module, and used to control charging and discharging of the energy storage module; The energy storage management module comprises a power supply control switch circuit, and the power supply control switch circuit comprises a first total switch and a second total switch, a first end of the first total switch is connected with one end of the energy storage module, a second end of the first total switch serves as a first voltage node, the first voltage node is used to provide a first voltage, a first end of the second total switch is connected with the first voltage node, and a second end of the second total switch is used to connect an energy storage charging module.

30. The circuit of claim 29, wherein, The energy storage management module further comprises an energy storage charging and discharging protection circuit connected with the energy storage module, for detecting the charging and discharging state of the energy storage module and generating corresponding charging protection signals and discharging protection signals when the charging and discharging is abnormal. The first total switch is directly or indirectly controlled by the power-on signal and the discharging protection signal, and the second total switch is directly or indirectly controlled by the charging protection signal.

31. The circuit of claim 29, wherein, The energy storage management module further comprises a voltage stabilizing circuit connected with the first voltage node, for performing voltage stabilizing processing on the first voltage to obtain a second voltage required for the operation of devices in the circuit.

32. The circuit of claim 29, wherein, Further comprising: The energy storage charging module is connected with the second end of the second total switch and an external power supply, for providing the energy of the external power supply to the energy storage module through the second total switch and the first total switch for charging.

33. The circuit of claim 29, wherein, Further comprising: An energy storage discharging module connected with the first voltage node and an external device, for outputting the first voltage provided by the first voltage node to the external device after voltage reduction for charging.

34. The circuit of claim 29, wherein, The energy storage management module further comprises an energy storage state detection circuit connected with the control module and the energy storage module respectively, for detecting the state of the energy storage module and feeding back an energy storage detection signal to the control module. The control module is further configured to control the power supply control switch circuit to be disconnected when the energy storage detection signal indicates that the energy storage module is abnormal.

35. The circuit of claim 34, wherein, The energy storage state detection circuit comprises an energy storage temperature detection circuit connected with the control module, for detecting the temperature of the energy storage module and generating an energy storage temperature detection signal to the control module, so that the control module determines whether the energy storage module has temperature abnormality based on the energy storage temperature detection signal.

36. The circuit of claim 34, wherein, The energy storage state detection circuit comprises a cell voltage detection circuit connected with each cell, for detecting the voltage of each cell and feeding back a cell voltage detection signal to the control module, so that the control module determines whether the cell has voltage abnormality based on the cell voltage detection signal.

37. The circuit of claim 1, wherein, The first motor is a high-speed centrifugal motor, and the second motor is a high-torque motor.

38. A dust extraction blower apparatus, characterized by, The vacuum cleaner comprises a housing, a blowing component, a dust suction component, and the control circuit according to any one of claims 1-37, at least part of the blowing component, the dust suction component, or the control circuit is arranged in the housing.

39. The dusting and blowing apparatus of claim 38, wherein, The housing comprises a first air duct and a second air duct, the first air duct is arranged with the first motor and the blowing component, and the second air duct is arranged with the second motor and the dust suction component.

40. The dusting and blowing apparatus of claim 39, wherein, The housing comprises: A third air duct, the first motor and the second motor are arranged in the third air duct; wherein, The first motor drives the blowing component to generate a first airflow, and the second motor drives the dust suction component to generate a second airflow based on the first airflow; or, the second motor drives the dust suction component to generate a second airflow, and the first motor drives the blowing component to generate a first airflow based on the second airflow.

41. The dusting and blowing apparatus of claim 38, wherein, Further comprising an energy storage module, the energy storage module comprises at least one of a battery and a super capacitor, the battery comprises at least one of a sodium battery, a lithium battery, and a lead-acid battery.

42. The dusting and blowing apparatus of claim 38, wherein, The dust-suction blower device is a hand-held device or a portable device. The dust-suction blower device is a hand-held device or a portable device.

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