Driving module and curtain

Abstract

The utility model relates to a driving module and a curtain, and the driving module comprises a driving module which is used for being connected with a load; the power supply module is connected with the driving module; if the driving module is in the first driving state, the power supply module outputs a first power supply signal to the driving module, the voltage of the first power supply signal is in a first preset range, and the driving module drives a load to work; if the driving module is in the second driving state, the power supply module outputs a second power supply signal to the driving module, and the power of the second power supply signal is in a second preset range; the voltage of the first power supply signal is larger than that of the second power supply signal, and the working current of the driving module in the first driving state is smaller than that of the driving module in the second driving state. The power supply module not only can meet the on-load requirement of the driving module, but also can consider the scene of large current required by the driving module in the second driving state, and can also avoid the excessive design of the power supply module so as to remarkably reduce the cost and the energy consumption.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a drive module and a curtain. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. It can be used to drive various mechanical equipment and is widely used in fields such as power tools and home appliances.

[0003] However, the motor will generate large current under some abnormal conditions, which requires the power supply to output power adapted to the large current of the motor, significantly increasing the cost of the power supply. Utility Model Content

[0004] Based on this, it is necessary to provide a drive module and curtain to address the problem in the prior art that the motor will generate large current under some abnormal conditions, causing the power supply to output power adapted to the large current of the motor, which significantly increases the power supply cost.

[0005] In order to achieve the above object, the present application provides a driving module, including:

[0006] A drive module, used for connecting with a load;

[0007] A power supply module connected to the driving module;

[0008] Among them, if the driving module is in a first driving state, the power supply module outputs a first power supply signal to the driving module, and the voltage of the first power supply signal is within a first preset range, so that the driving module drives the load to work; if the driving module is in a second driving state, the power supply module outputs a second power supply signal to the driving module, and the power of the second power supply signal is within a second preset range; the voltage of the first power supply signal is greater than the voltage of the second power supply signal, and the operating current of the driving module when it is in the first driving state is less than the operating current of the driving module when it is in the second driving state.

[0009] In one embodiment, the power supply module includes:

[0010] A signal processing unit, used to perform AC-DC conversion on the received AC signal and output a DC signal;

[0011] A switch control unit, connected to the signal processing unit and the driving module respectively, and used to control the on / off state of the power supply path between the signal processing unit and the driving module;

[0012] Among them, if the driving module is in the first driving state, the switch control unit controls the power supply path to switch alternately between the on state and the off state with a first duty cycle to output the first power supply signal; if the driving module is in the second driving state, the switch control unit controls the power supply path to switch alternately between the on state and the off state with a second duty cycle to output the second power supply signal.

[0013] In one embodiment, the switch control unit comprises:

[0014] A switch circuit is provided on the power supply path;

[0015] A control circuit, connected to the switch circuit and the drive module respectively, for collecting first signal transmission information of the power supply path, wherein the first signal transmission information includes at least one of a voltage parameter and a current parameter of the power supply path;

[0016] Among them, if the operating parameters of the driving module meet the parameter conditions corresponding to the first driving state, the control circuit outputs a first control signal, so that the switching circuit alternately turns on and off the power supply path with a first duty cycle; if the operating parameters of the driving module meet the parameter conditions corresponding to the second driving state, the control circuit outputs a second control signal, so that the switching circuit alternately turns on and off the power supply path with a second duty cycle; the first duty cycle is greater than the second duty cycle.

[0017] In one embodiment, the parameter condition corresponding to the first driving state includes that the current parameter is within a preset current range, and the parameter condition corresponding to the second driving state includes that the current parameter exceeds the preset current range;

[0018] If the operating parameters of the driving module satisfy that the current parameter is within a preset current range, the control circuit outputs the first control signal; if the operating parameters of the driving module satisfy that the current parameter exceeds the preset current range, the control circuit outputs the second control signal.

[0019] In one embodiment, the driving module includes:

[0020] A management unit connected to the power supply module;

[0021] A driving unit, connected to the power supply module and the management unit respectively;

[0022] A motor unit connected to the driving unit, and the motor unit is also used to be connected to the load;

[0023] If the motor unit is in the first driving state, the management unit outputs a first driving signal to the driving unit, so that the driving unit controls the motor unit to drive the load to work with target driving parameters under the control of the first driving signal.

[0024] In one of the embodiments, if the motor unit is in the second driving state, the management unit outputs a second driving signal to the driving unit, so that the driving unit stops working under the control of the second driving signal.

[0025] In one embodiment, the driving module further includes:

[0026] a detection unit, connected to the management unit and the driving unit respectively, and configured to collect second signal transmission information of the driving unit;

[0027] The management unit is used for receiving the second signal transmission information, and outputting the second driving signal if the second signal transmission information meets the parameter condition corresponding to the second driving state.

[0028] In one embodiment, the management unit includes:

[0029] a controller connected to the drive unit, wherein if the drive unit is in a first driving state, the controller outputs a first driving signal to the drive unit so that the drive unit drives the load to work under the action of the first power supply signal; if the drive unit is in a second driving state, the controller outputs a second driving signal to the drive unit so that the drive unit stops working;

[0030] The converter is connected to the controller and the power supply module respectively, and is used to convert the first power supply signal or the second power supply signal and then supply power to the controller.

[0031] In one embodiment, the driving module further includes:

[0032] The communication unit is used to receive a control instruction and transmit the control instruction to the controller. If the controller receives the control instruction, the controller outputs the first driving signal to the driving unit.

[0033] In one embodiment, a curtain is provided, comprising the driving module, a track and a curtain fabric as described above, wherein the curtain fabric is provided with a moving component connected to the driving module, and the moving component is connected to the track;

[0034] Wherein, the driving module is used to drive the moving component to drive the curtain fabric to move on the track.

[0035] The above-mentioned driving module and curtain, on the one hand, when the driving module is in the first driving state, the power supply module outputs a first power supply signal to the driving module, and the voltage of the first power supply signal is within a first preset range, so as to maintain a constant output voltage so that the driving module can normally drive the load to work; on the other hand, when the driving module is in the second driving state, the working current of the driving module is greater than the working current in the first driving state, and the power supply module controls the voltage of the second power supply signal to gradually decrease, so that the voltage of the output second power supply signal is less than the voltage of the first power supply signal, thereby making the power of the second power supply signal within a second preset range, so as to maintain a constant output power to supply power to the driving module, thereby the output power of the power supply module in different driving states can be designed to be slightly greater than the power consumed by the driving module in the first driving state, which can not only meet the load requirements of the driving module, but also take into account the scenario of large current required by the driving module in the second driving state, and can also avoid over-design of the power supply module to significantly reduce costs and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 This is one of the structural schematic diagrams of a driving module provided in an embodiment;

[0038] Figure 2 This is a second structural schematic diagram of a driving module provided in an embodiment;

[0039] Figure 3 This is a schematic diagram of the structure of a power supply module provided in an embodiment;

[0040] Figure 4 FIG. 1 is a schematic diagram of a current-voltage curve of a driving module provided in an embodiment when the driving module is in a second driving state.

[0041] Description of reference numerals:

[0042] Driving module: 100; management unit: 110; controller: 111; converter: 112; driving unit: 120; motor unit: 130; detection unit: 140; communication unit: 150; power supply module: 200; signal processing unit: 210; switch control unit: 220; switch circuit: 221; control circuit: 222. DETAILED DESCRIPTION

[0043] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0045] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, in this specification, the term "and / or" includes any and all combinations of the relevant listed items.

[0046] In one embodiment, see Figure 1 , a driving module is provided, including: a driving module 100 and a power supply module 200.

[0047] The driving module 100 is used to connect to the load, and the power supply module 200 is connected to the driving module 100. If the driving module 100 is in the first driving state, the power supply module 200 outputs a first power supply signal to the driving module 100, and the voltage of the first power supply signal is within a first preset range, so that the driving module 100 drives the load to work. If the driving module 100 is in the second driving state, the power supply module 200 outputs a second power supply signal to the driving module 100. The power of the second power supply signal is within a second preset range, the voltage of the first power supply signal is greater than the voltage of the second power supply signal, and the operating current of the driving module when it is in the first driving state is less than the operating current of the driving module when it is in the second driving state.

[0048] In one embodiment, the drive module 100 may include a motor and a drive wheel. The motor is a device that converts electrical energy into mechanical energy. It works based on the electromagnetic principle and is usually composed of a coil and a magnet. When current passes through the coil, the generated magnetic field interacts with the magnet, causing the coil to be acted upon by a force. This force causes the coil to start rotating, thereby achieving mechanical energy conversion. In some mechanical systems, the motor may be connected to the drive wheel through a transmission device (such as gears, belts, and couplings, etc.), or the output shaft of the motor may be directly connected to the drive wheel, and then the drive wheel transmits the rotational torque and speed generated by the motor to the load through mechanical transmission, so as to push or drive the load to achieve the desired mechanical movement.

[0049] In addition, in some embodiments, in order to achieve precise control and adjustment, the driving module 100 may also include a sensor (such as a Hall sensor) and a control component. For example, this embodiment is explained by taking the application scenario of the smart curtain system as an example, wherein the sensor is used to measure the speed and position of the motor, and feed back the speed and position information to the control component. The control component receives the information fed back by the sensor, generates a corresponding driving signal according to the control logic and transmits it to the motor to drive the motor to generate a rotating force, and transmits the force to the curtain through the driving wheel, pushing the curtain to move up and down or open and close along the track, thereby achieving the required movement and operation. The smart curtain system can realize automatic opening and closing, pulling and positioning control of the curtain through the cooperation of the internal components of the driving module 100, providing users with a convenient curtain operation experience and increasing the intelligence and automation of the home. It should be noted that this embodiment does not limit the application scenario of the driving module, and can be applied in other fields such as industrial production and automation systems.

[0050] The driving module 100 may have a normal driving state and an abnormal driving state during operation. In one embodiment, the normal driving state may include a no-load state, a light-load state, and a full-load state. The no-load state refers to the motor running without a load, and there is no external resistance acting on the motor shaft. In the no-load state, the motor is relatively easy to rotate, and the required current is small. The full-load state refers to the motor running under a rated load. In the full-load state, the motor needs to generate enough power to overcome the resistance of the load, and the required current is large.

[0051] The abnormal driving state can be understood as a motor failure or abnormal situation, which causes the motor to be unable to operate normally. In some abnormal driving states, the motor may generate a large current. For example, the stalled state is an abnormal driving state of the motor. When the motor is in the stalled state, the motor shaft is completely blocked, resulting in the inability to rotate or move, causing the motor to generate a very high load and current, resulting in the motor needing to consume much more power than in the normal driving state. For example, in some embodiments, when the drive module 100 is in a fully loaded state, the current demand of the internal motor and control components is 1.08A, and the power supply module 200 stably outputs a 24V voltage. At this time, the drive module 100 operates under the condition of consuming 26W of power. However, since the current absorbed by the motor when it is stalled is twice that of the normal driving state, the current demand of the drive module 100 becomes 2.08A. If the power supply module 200 maintains the output of 24V voltage, the drive module 100 needs to operate under the condition of consuming about 50W of power to overcome the resistance caused by the stalled state, that is, the power consumed by the drive module 100 when it is stalled is about twice that of the normal driving state.

[0052] In the related art, in order to ensure the normal operation of the system and prevent the power supply module 200 from being overloaded or causing other problems, the maximum output power of the power supply module 200 is usually designed to be slightly larger than the power required in the abnormal driving state. However, since the power consumed by the drive module 100 in the normal driving state and the abnormal driving state is quite different, and the drive module 100 is in the normal driving state most of the time, designing the power supply module 200 according to the high power required in the abnormal driving state will result in a huge waste of cost.

[0053] Based on this, in the present embodiment, the power supply module 200 outputs different power supply signals when the driving module 100 is in different driving states, so as to meet the normal load demand of the driving module 100, take into account the large current required by the driving module 100 in the abnormal driving state, and avoid over-design of the power supply module 200 to significantly reduce the cost. Among them, the driving module 100 in the first driving state can be understood as the driving module 100 in the normal driving state, the driving module 100 in the second driving state can be understood as the driving module 100 in the abnormal driving state, the first preset range can be understood as fluctuating around the first preset value, and the upper limit and lower limit of the first preset range can be close to the first preset value. The first preset value here can be the voltage value required by the driving module 100 in the full load state, the second preset range can be understood as fluctuating around the second preset value, and the upper limit and lower limit of the second preset range can be close to the second preset value. The second preset value here can be slightly greater than the power consumed by the driving module 100 in the full load state.

[0054] When the driving module 100 is in the first driving state, the power supply module 200 outputs a first power supply signal to the driving module 100, and the voltage of the first power supply signal is within a first preset range, that is, when the driving module 100 is in a normal driving state, the power supply module 200 maintains a constant output voltage around the first preset value, so that the driving module 100 can normally drive the load to work.

[0055] When the driving module 100 is in the second driving state, the working current required by the driving module 100 is greater than the working current in the first driving state. For example, the current of the driving module 100 in the second driving state is about twice that of the first driving state. Therefore, the power supply module 200 outputs a second power supply signal to the driving module 100, the power of the second power supply signal is within the second preset range, and the voltage of the second power supply signal is less than the voltage of the first power supply signal. That is, when the driving module 100 is abnormal and the current continues to increase, the power supply module 200 controls the voltage of the second power supply signal to gradually decrease, so that the product of the voltage and the current remains constant, and then the power of the second power supply signal maintains a constant output power around the second preset value. Therefore, when the current required by the driving module 100 increases abnormally, the power supply module 200 reduces the voltage of the second power supply signal to maintain a constant power output. The output power of the power supply module 200 can be controlled to be slightly greater than the power consumed by the driving module 100 when it is fully loaded, which can not only meet the power supply requirements of the driving module 100 in different driving states, but also achieve the purpose of reducing the output power of the power supply module 200 to reduce costs.

[0056] In the driving module provided in the present embodiment, on the one hand, when the driving module 100 is in the first driving state, the power supply module 200 outputs a first power supply signal to the driving module 100, and the voltage of the first power supply signal is within a first preset range, so as to maintain a constant output voltage so that the driving module 100 can normally drive the load to work; on the other hand, when the driving module 100 is in the second driving state, the working current of the driving module 100 is greater than the working current in the first driving state, and the power supply module 200 controls the voltage of the second power supply signal to gradually decrease, so that the voltage of the output second power supply signal is less than the voltage of the first power supply signal, thereby making the power of the second power supply signal within a second preset range, so as to maintain a constant output power to supply power to the driving module 100, thereby the output power of the power supply module 200 in different driving states can be designed to be slightly greater than the power consumed by the driving module 100 in the first driving state, which can not only meet the load demand of the driving module 100, but also take into account the scenario of the large current required by the driving module 100 in the second driving state, and can also avoid over-design of the power supply module 200 to significantly reduce costs and energy consumption.

[0057] In one embodiment, Figure 2As shown, the power supply module 200 includes: a signal processing unit 210 and a switch control unit 220 .

[0058] The signal processing unit 210 is used to perform AC-DC conversion processing on the received AC signal and output a DC signal. The switch control unit 220 is connected to the signal processing unit 210 and the driving module 100 respectively, and is used to control the on-off state of the power supply path between the signal processing unit 210 and the driving module 100. If the driving module 100 is in the first driving state, the switch control unit 220 controls the power supply path to alternately switch between the on state and the off state with a first duty cycle to output a first power supply signal. If the driving module 100 is in the second driving state, the switch control unit 220 controls the power supply path to alternately switch between the on state and the off state with a second duty cycle to output a second power supply signal.

[0059] In one embodiment, in conjunction with reference Figure 2 and Figure 3 The signal processing unit 210 may include a first rectifier and filter circuit, a transformer and an output circuit. The first rectifier and filter circuit is used to receive a 220V AC signal input from the mains network. The first rectifier and filter circuit may include a rectifier circuit and a filter circuit. The rectifier circuit is used to convert the AC signal into a pulsating DC signal. The type of the rectifier circuit may be a single-phase rectifier bridge or a three-phase rectifier bridge. The pulsating DC signal output after rectification enters the filter circuit. The filter circuit is used to remove ripples and noise in the pulsating DC signal to smoothly output a stable DC filter signal. The filter circuit may include a capacitor and / or an inductor.

[0060] In one embodiment, the transformer is provided with a primary coil, a secondary coil and an auxiliary coil. The transformer is used to change the ratio of the input voltage to provide the required output voltage. The DC filter signal smoothly output by the filter circuit enters one end of the primary coil of the transformer. The switch control unit 220 is connected to the other end of the primary coil of the transformer. At the same time, the auxiliary coil of the transformer is connected to the switch control unit 220 to supply power to the switch control unit 220. The switch control unit 220 controls the on and off state of the switch element (such as MOSFET) by adopting a pulse width modulation (PWM) method. The switch element is integrated in the switch control unit 220. The on and off state of the switch element is the on and off state of the power supply path between the signal processing unit 210 and the drive module. The switch control unit 220 can monitor the driving state of the drive module 100 based on the connection with the drive module 100 according to the feedback signal transmitted by the drive module 100, and then dynamically adjust the on and off state of the power supply path according to different driving states, so that the switching frequency and duty cycle of the transformer change. The duty cycle refers to the ratio of the on time of the switch element to the time of one cycle, so that the power supply signal output by the transformer meets the electrical requirements corresponding to the current on and off state. Therefore, during the on and off process of the primary coil, the transformer converts the received DC filter signal into an AC signal, and the AC signal is converted into another AC signal to the secondary coil through voltage transformation. The output circuit of the signal processing unit 210 is respectively connected to the secondary coil and the driving module 100. The output circuit may include a second rectifier and filter circuit, which is used to output a stable DC signal after rectifying and filtering the AC signal obtained by transformation, and finally output a stable DC signal as the power supply signal of the power supply module 200 to power the driving module 100.

[0061] Therefore, when the driving module 100 is in the first driving state, the switch control unit 220 controls the on-off state of the power supply path between the signal processing unit 210 and the driving module 100 according to the received feedback signal, so that the power supply path is alternately switched between the on state and the off state at a switching frequency of the first duty cycle, so that the DC signal finally output by the signal processing unit 210 is provided to the driving module 100 as the first power supply signal. The switching frequency of the first duty cycle makes the voltage of the first power supply signal within a first preset range, so that the power supply module 200 provides power to the driving module 100 in a constant voltage output manner. When the driving module 100 is in the second driving state, the switch control unit 220 controls the on / off state of the power supply path between the signal processing unit 210 and the driving module 100 according to the received feedback signal, so that the power supply path is alternately switched between the on state and the off state at the switching frequency of the second duty cycle, so that the DC signal finally output by the signal processing unit 210 is provided to the driving module 100 as the second power supply signal, wherein the switch control unit 220 reduces the switching frequency of the power supply path, that is, the switching frequency of the second duty cycle is less than the switching frequency of the first duty cycle, so that the voltage of the first power supply signal is reduced to the voltage of the second power supply signal, and the output voltage is reduced when the driving module 100 abnormally generates a large current, and power is provided to the driving module 100 in a constant power output mode, so that the output power of the power supply module 200 is maintained slightly greater than the power consumed by the driving module 100 in the normal driving state, and the output power of the power supply module 200 can be reduced while taking into account the power required by the driving module 100 in different driving states, so as to significantly reduce the cost.

[0062] In one embodiment, Figure 2 As shown, the switch control unit 220 includes a switch circuit 221 and a control circuit 222 .

[0063] The switch circuit 221 is arranged on the power supply path, and the control circuit 222 is connected to the switch circuit 221 and the driving module 100 respectively, and is used to collect the first signal transmission information of the power supply path, and the first signal transmission information includes at least one of the voltage parameter and the current parameter of the power supply path. If the working parameters of the driving module 100 meet the parameter conditions corresponding to the first driving state, the control circuit 222 outputs a first control signal, so that the switch circuit 221 alternately turns on and turns off the power supply path with a first duty cycle. If the working parameters of the driving module 100 meet the parameter conditions corresponding to the second driving state, the control circuit 222 outputs a second control signal, so that the switch circuit 221 alternately turns on and turns off the power supply path with a second duty cycle. The first duty cycle is greater than the second duty cycle.

[0064] In one embodiment, the switching circuit 221 includes the "switching element" described above, and the switching circuit 221 can be integrated into the control circuit 222. The first signal transmission information of the power supply path may include the current parameter of the primary coil of the transformer. At the same time, the first signal transmission information of the power supply path may also include the voltage parameter fed back by the drive module 100 to the control circuit 222. The control circuit 222 compares the current parameter of the primary coil with the voltage parameter fed back by the drive module 100 to the control circuit 222, and outputs the first control signal or the second control signal according to the comparison result. On the one hand, when the current parameter is less than the voltage parameter, it can be considered that the drive module 100 is in the first driving state, that is, the drive module 100 meets the parameter conditions corresponding to the normal driving state, and then the control circuit 222 outputs the first control signal to make the switching circuit 221 at the on-off frequency of the first duty cycle, so as to realize constant voltage power supply to the drive module 100 in the normal driving state. On the other hand, when the current parameter is greater than or equal to the voltage parameter, it can be considered that the driving module 100 is in the second driving state, that is, the driving module 100 meets the parameter conditions corresponding to the abnormal driving state, and then the control circuit 222 outputs a second control signal to make the switching circuit 221 at a second duty cycle on-off frequency, thereby realizing constant power supply to the driving module 100 in the abnormal driving state.

[0065] In one embodiment, the parameter condition corresponding to the first driving state includes that the current parameter is within a preset current range, and the parameter condition corresponding to the second driving state includes that the current parameter exceeds the preset current range.

[0066] If the working parameters of the driving module satisfy that the current parameter is within the preset current range, the control circuit outputs a first control signal, and if the working parameters of the driving module satisfy that the current parameter exceeds the preset current range, the control circuit outputs a second control signal.

[0067] In one embodiment, the control circuit can adopt a current-controlled PWM control mode. The control circuit controls the pulse width of the PWM by using the primary current. When the driving module is in the first driving state, the current parameter of the primary coil is less than the current value required by the driving module under the full load state. The control circuit switches the mode of the driving switch circuit to the first working mode according to the comparison result between the synthetic signal of the primary current and the feedback voltage input by the driving module, so that the switch circuit is alternately turned on and off at a conduction frequency of the first duty cycle, and finally the power supply module outputs the first power supply signal in the constant voltage state. When the driving module is in the second driving state, the current parameter of the primary coil is greater than or equal to the current value required by the driving module under the full load state. The control circuit switches the mode of the driving switch circuit to the second working mode according to the comparison result between the synthetic signal of the primary current and the feedback voltage input by the driving module, so that the switch circuit is alternately turned on and off at a conduction frequency of the second duty cycle, and finally the power supply module outputs the second power supply signal in the constant power state.

[0068] In some embodiments, the transformer is provided with a primary coil, a secondary coil and an auxiliary coil, the control circuit is provided with a drain terminal, a current sampling terminal, a power supply terminal and a feedback terminal, the drain terminal of the control circuit is connected to one end of the primary coil, the other end of the primary coil is connected to the signal processing unit, the secondary coil is connected to the drive module via the second rectifier filter circuit, the power supply terminal of the control circuit is connected to the auxiliary coil, and the auxiliary coil is used to supply power to the control circuit. The switch circuit may include a MOSFET switch tube, the current sampling terminal of the control circuit is connected to the source of the switch circuit, the drain of the switch circuit serves as the drain terminal of the control circuit, then the drain terminal of the control circuit is connected to the source terminal so that the primary coil is connected to the ground, the feedback terminal of the control circuit is connected to the drive module through the feedback circuit, and then the control circuit can receive the voltage feedback signal transmitted by the drive module.

[0069] In some embodiments, the control circuit may include a clock circuit, a slope compensation circuit, a trigger, a PWM comparator, an error amplifier, an overcurrent comparator, an OR gate, a logic control module and a MOS drive module. One input terminal of the error amplifier receives a voltage feedback signal, and the other input terminal receives a reference voltage. The error amplifier compares the voltage feedback signal with the reference voltage to obtain an error amplification signal, and the error amplification signal is sent to the negative input terminal of the PWM comparator. The primary current signal received by the current sampling terminal passes through the sampling circuit and is synthesized with the slope compensation signal in the slope compensation circuit to form a changing triangle wave or a trapezoidal triangle wave, and the synthesized signal is transmitted to the positive input terminal of the PWM comparator. The synthesized signal is combined with the voltage from the drive module. The error amplified signal after feedback processing of the block is compared and amplified in the PWM comparator. The output of the PWM comparator is connected to the first input of the OR gate, and the primary current signal transmitted from the current sampling end is input to the positive input of the overcurrent comparator after the sampling circuit. The overcurrent protection current value is input to the negative input of the overcurrent comparator. The output of the overcurrent comparator is input to the second input of the OR gate. The OR gate outputs a trigger signal to the R end of the trigger according to the signals of the first input and the second input. The clock circuit outputs a start signal to the S end of the trigger at the beginning of the cycle. The logic control module switches the mode of driving the MOS driver module according to the Q end state of the trigger, and then controls the conduction and shutdown of the switch circuit to control the duty cycle of the power supply path. When the synthetic signal of the primary current is higher than the feedback voltage input by the driver module, the PWM comparator outputs a high level, otherwise it outputs a low level. When the primary current signal is higher than the overcurrent protection current value, the overcurrent comparator outputs a high level, otherwise it outputs a low level. Finally, the signal output by the PWM comparator and the signal output by the overcurrent comparator output a shutdown signal or a start signal through the OR gate.

[0070] In one embodiment, continue to refer to Figure 2 The driving module 100 includes a management unit 110 , a driving unit 120 and a motor unit 130 .

[0071] The management unit 110 is connected to the power supply module 200, the drive unit 120 is connected to the power supply module 200 and the management unit 110 respectively, the motor unit 130 is connected to the drive unit 120, and the motor unit 130 is also used to connect to the load. If the motor unit 130 is in a first driving state, the management unit 110 outputs a first driving signal to the drive unit 120, so that the drive unit 120 controls the motor unit 130 to drive the load to work with the target driving parameters under the control of the first driving signal. In other embodiments, if the motor unit 130 is in a second driving state, the management unit 110 outputs a second driving signal to the drive unit 120, so that the drive unit 120 stops working under the control of the second driving signal.

[0072] As the control center of the drive module, the management unit 110 is responsible for receiving and processing external instructions and feedback signals from sensors, etc., and performing operations and decisions through some existing algorithms and logics. The management unit 110 generates a PWM drive signal for the motor as needed to control parameters such as the start, stop, speed and direction of the motor. The drive unit 120 is a circuit that converts the PWM drive signal generated by the management unit 110 into a voltage and current signal suitable for the operation of the motor unit 130. It adapts and amplifies the drive signal to provide sufficient power and response speed, so that the motor unit 130 can be driven according to the instructions of the management unit 110. Optionally, the drive unit 120 may include a motor drive chip (such as an H-bridge driver) and a power amplifier, etc.

[0073] In one embodiment, the motor unit 130 may be a brushed DC motor, which is a common type of motor whose working principle is based on the interaction between permanent magnets and brushes. The target drive parameter may include at least one of the speed and direction, and the drive unit 120 controls the speed and movement direction of the motor by providing appropriate voltage and current signals to the motor unit 130. That is, when the motor unit 130 is in the first driving state, the management unit 110 transmits the first drive signal required for the current working process to the drive unit 120, and the drive unit 120 is responsible for converting the first drive signal into an electric power signal that can be received by the motor unit 130 to drive the motor unit 130 to rotate, and the feedback signal generated by the movement of the motor unit 130 is fed back to the management unit 110 through the sensor, thereby realizing closed-loop control, and the coordinated work of the three realizes precise control of the brushed DC motor, including speed regulation and steering control. When the motor unit 130 is in the second driving state, the management unit 110 outputs a second driving signal to the driving unit 120 to stop the driving unit 120 from working, and the motor unit 130 then stops, and the power output of the power supply module 200 is restored to the first power supply signal to maintain a constant voltage output.

[0074] For example, Figure 4As shown, if the maximum output power P1 of the power supply module is designed to be 28W, since the power supply module supplies power to two units, one is the management unit, and the other is the drive unit and the motor unit, the maximum power consumed by the management unit is about 2W (at this time, the voltage required by the management unit is 3.3V and the current is 600mA), wherein, from the time period 0 to t0, the motor unit is in a no-load state, and the current in this stage is recorded as I0, and at time t1, the motor unit is in a full-load state. Assuming that the current I1 required for the motor unit to operate in a full-load state is 1.08A and V1 is 24V, then the power P2 required for the motor unit to operate in a full-load state is 26W, and in the time period 0 to t1, the power supply module maintains the voltage of the first power supply signal at 24V, and supplies power to the drive module in a constant voltage mode.

[0075] After time t1, the motor unit is in an abnormal driving state (for example, a stalled state), and the current begins to gradually rise. The maximum stalled current I2 of the motor unit in the stalled state is 2.08A. In the process of the current rising to the maximum stalled current I2, the current of the motor unit will reach a preset current range I3 at time t2. The preset current range I3 can be determined around the ratio between the maximum output power of the power supply module and the voltage of the first power supply signal. For example, when the voltage of the first power supply signal is 24V and the maximum output power of the power supply module is 28W, the preset current range I3 can be set around 1.17A. When the current of the motor unit reaches t2 After a moment, the power supply module switches the working mode, that is, as the current of the motor unit increases, the power supply module gradually reduces the output voltage to the voltage V2 of the second power supply signal (about 13.46V), so that the power of the second power supply signal is always maintained at about 28W of P1, that is, the power of the second power supply signal output by the power supply module is maintained in a range slightly larger than P2, until t3 when the motor unit is blocked and is equivalent to a small resistor, and the current no longer increases, thereby maintaining the voltage of the second power supply signal of the power supply module constant, and then the management unit outputs the second drive signal, so that the drive unit stops driving, that is, the motor unit stops, and the output of the power supply module returns to the first power supply signal.

[0076] In one embodiment, Figure 2 As shown, the driving module 100 further includes: a detection unit 140 .

[0077] The detection unit 140 is connected to the management unit 110 and the driving unit 120 respectively, and is used to collect the second signal transmission information of the driving unit 120. The management unit 110 is used to receive the second signal transmission information, and output the second driving signal if the second signal transmission information meets the parameter conditions corresponding to the second driving state.

[0078] In one embodiment, the second signal transmission information includes the current of the driving unit 120, and the detection unit 140 may include a current sensor or a current measuring resistor to realize current detection of the driving unit 120. Through the current detection of the detection unit 140, the working current of the motor unit 130 can be monitored in real time. If the current reaches a preset abnormal current value, it can be fed back to the management unit 110 so that the management unit 110 can adjust the control strategy of the motor in time, that is, when the second signal transmission information meets the parameter conditions corresponding to the abnormal driving state, the second drive signal is output to make the motor unit 130 stop working, thereby improving the reliability and stability of the drive module.

[0079] In one embodiment, Figure 2 As shown, the management unit 110 includes: a controller 111 and a converter 112 .

[0080] The controller 111 is connected to the drive unit 120. If the drive unit 120 is in the first driving state, the controller 111 outputs a first driving signal to the drive unit 120, so that the drive unit 120 drives the load to work under the action of the first power supply signal. If the drive unit 120 is in the second driving state, the controller 111 outputs a second driving signal to the drive unit 120, so that the drive unit 120 stops working. The converter 112 is respectively connected to the controller 111 and the power supply module 200, and is used to convert the first power supply signal or the second power supply signal and then supply power to the controller 111.

[0081] In one embodiment, the controller 111 may be a microcontroller unit (MCU) 111, and the converter 112 may be a DC / DC converter 112. The DC / DC converter 112 may convert a fixed DC voltage into an adjustable DC voltage, and also has the characteristics of voltage stabilization, current stabilization, power control, and DC line protection. Since the voltage provided by the power supply module is usually high, the voltage of the first power supply signal or the second power supply signal provided by the power supply module is converted into a voltage range suitable for the operation of the controller 111 through the DC / DC converter 112, so as to achieve a stable power supply.

[0082] In one embodiment, Figure 2 As shown, the driving module 100 further includes: a communication unit 150 for receiving a control instruction and transmitting the control instruction to the controller 111 ; if the controller 111 receives the control instruction, the controller 111 outputs a first driving signal to the driving unit 120 .

[0083] When receiving the control instruction, the controller 111 outputs the first driving signal to the driving unit 120. The control instruction may be an instruction sent by the user to the driving module 100 through wireless communication, key input, etc., and then the controller 111 outputs the first driving signal according to the control instruction, so that the motor unit 130 responds to the action corresponding to the control instruction.

[0084] In one embodiment, a curtain is provided, comprising a driving module, a track and a curtain fabric as provided in the above embodiment, wherein the curtain fabric is provided with a moving component connected to the driving module, and the moving component is connected to the track.

[0085] Among them, the driving module is used to drive the moving component to drive the curtain fabric to move on the track. In the curtain provided in this embodiment, on the one hand, when the driving module is in the first driving state, the power supply module outputs a first power supply signal to the driving module, and the voltage of the first power supply signal is in the first preset range, so as to maintain a constant output voltage so that the driving module can drive the load normally; on the other hand, when the driving module is in the second driving state, the working current of the driving module is greater than the working current in the first driving state, and the power supply module controls the voltage of the second power supply signal to gradually decrease, so that the voltage of the output second power supply signal is less than the voltage of the first power supply signal, and then the power of the second power supply signal is in the second preset range, so as to maintain a constant output power to supply power to the driving module, thereby the output power of the power supply module in different driving states can be designed to be slightly greater than the power consumed by the driving module in the first driving state, which can not only meet the load demand of the driving module, but also take into account the scenario of the large current required by the driving module in the second driving state, and can also avoid over-design of the power supply module to significantly reduce costs and energy consumption.

[0086] It can be understood that since the curtain uses the driving module provided by the above embodiment, when the performance of the driving module is higher than that of the traditional driving module, the driving performance of the corresponding curtain is also improved accordingly.

[0087] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0088] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A driving module, characterized in that: include: A drive module, used for connecting with a load; A power supply module connected to the driving module; Wherein, if the driving module is in the first driving state, the power supply module outputs a first power supply signal to the driving module, and the voltage of the first power supply signal is within a first preset range, so that the driving module drives the load to work; If the driving module is in the second driving state, the power supply module outputs a second power supply signal to the driving module, and the power of the second power supply signal is within a second preset range; the voltage of the first power supply signal is greater than the voltage of the second power supply signal, and the operating current of the driving module when it is in the first driving state is less than the operating current of the driving module when it is in the second driving state.

2. The driving module according to claim 1, characterized in that: The power supply module comprises: A signal processing unit, used to perform AC-DC conversion on the received AC signal and output a DC signal; A switch control unit, connected to the signal processing unit and the driving module respectively, and used to control the on / off state of the power supply path between the signal processing unit and the driving module; Wherein, if the driving module is in the first driving state, the switch control unit controls the power supply path to perform alternating switching between the on state and the off state with a first duty cycle to output the first power supply signal; If the driving module is in the second driving state, the switch control unit controls the power supply path to perform alternate switching between the on state and the off state at a second duty cycle to output the second power supply signal.

3. The driving module according to claim 2, characterized in that: The switch control unit comprises: A switch circuit is provided on the power supply path; A control circuit, connected to the switch circuit and the drive module respectively, for collecting first signal transmission information of the power supply path, wherein the first signal transmission information includes at least one of a voltage parameter and a current parameter of the power supply path; Wherein, if the operating parameters of the driving module meet the parameter conditions corresponding to the first driving state, the control circuit outputs a first control signal so that the switch circuit alternately turns on and off the power supply path at a first duty cycle; If the operating parameters of the driving module meet the parameter conditions corresponding to the second driving state, the control circuit outputs a second control signal so that the switching circuit alternately turns on and off the power supply path at a second duty cycle; the first duty cycle is greater than the second duty cycle.

4. The driving module according to claim 3, characterized in that: The parameter condition corresponding to the first driving state includes that the current parameter is within a preset current range, and the parameter condition corresponding to the second driving state includes that the current parameter exceeds the preset current range; If the operating parameters of the driving module satisfy that the current parameter is within a preset current range, the control circuit outputs the first control signal; if the operating parameters of the driving module satisfy that the current parameter exceeds the preset current range, the control circuit outputs the second control signal.

5. The driving module according to claim 1, characterized in that: The driving module comprises: A management unit connected to the power supply module; A driving unit, connected to the power supply module and the management unit respectively; A motor unit connected to the driving unit, and the motor unit is also used to be connected to the load; If the motor unit is in the first driving state, the management unit outputs a first driving signal to the driving unit, so that the driving unit controls the motor unit to drive the load to work with target driving parameters under the control of the first driving signal.

6. The driving module according to claim 5, characterized in that: If the motor unit is in the second driving state, the management unit outputs a second driving signal to the driving unit, so that the driving unit stops working under the control of the second driving signal.

7. The driving module according to claim 6, characterized in that: The driving module also includes: a detection unit, connected to the management unit and the driving unit respectively, and configured to collect second signal transmission information of the driving unit; The management unit is used for receiving the second signal transmission information, and outputting the second driving signal if the second signal transmission information meets the parameter condition corresponding to the second driving state.

8. The driving module according to claim 5, characterized in that: The management unit comprises: a controller connected to the drive unit, wherein if the drive unit is in a first driving state, the controller outputs a first driving signal to the drive unit so that the drive unit drives the load to work under the action of the first power supply signal; if the drive unit is in a second driving state, the controller outputs a second driving signal to the drive unit so that the drive unit stops working; The converter is connected to the controller and the power supply module respectively, and is used to convert the first power supply signal or the second power supply signal and then supply power to the controller.

9. The driving module according to claim 8, characterized in that: The driving module also includes: The communication unit is used to receive a control instruction and transmit the control instruction to the controller. If the controller receives the control instruction, the controller outputs the first driving signal to the driving unit.

10. A curtain, characterized in that: The invention comprises a driving module, a track and a curtain fabric according to any one of claims 1 to 9, wherein the curtain fabric is provided with a moving component connected to the driving module, and the moving component is connected to the track; Wherein, the driving module is used to drive the moving component to drive the curtain fabric to move on the track.

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