Alternating-current and solar dual-purpose fan lamp system and control method

Abstract

The invention discloses an alternating current and solar energy dual-purpose fan lamp system and a control method, and relates to the field of integrated circuits, the system comprises a power supply circuit module, a controller module, a photovoltaic power supply module, an auxiliary light source module, a main light source module, a circuit detection module and a motor fan module; the power circuit module is used for providing stable power; the circuit detection module is used for outputting a first control signal, and the first control signal is used for controlling the auxiliary light source module to work when it is determined that no alternating current exists and the electric quantity of a battery pack in the photovoltaic power supply module is sufficient; the photovoltaic power supply module is used for photovoltaic charging and is also used for supplying power to energy storage light sources of the motor fan module and the auxiliary light source module; the controller module is used for receiving a control instruction and controlling one of the motor fan module, the main light source module and the auxiliary light source module according to the control instruction. Self-adaptive switching between solar energy and alternating-current power grid power supply can be achieved, and the illumination and fan requirements are met through solar energy power supply when the alternating-current power grid is powered off.

Description

Technical Field

[0001] The present application relates to the field of integrated circuits, and in particular to an AC / solar dual-purpose fan light system and a control method thereof. Background Art

[0002] Fan lights combine the functions of ceiling fans and lamps, providing both illumination and air circulation for a cool breeze in the summer. Due to their aesthetically pleasing and practical design, they have become a common decorative and practical feature in homes, restaurants, and other settings. With the advent of the LED lighting era, rapid advances in brushless DC motor (BLDC) drive technology and a growing focus on energy conservation and environmental protection, these energy-saving and comfort-enhancing products have gained widespread popularity.

[0003] Existing solar fan lights rely too much on photovoltaic charging equipment and are difficult to adapt to the AC power grid to achieve adaptive switching between solar energy and AC power grid. Summary of the Invention

[0004] The purpose of this application is to provide an AC solar dual-purpose fan light system and control method, which can realize adaptive switching between solar energy and AC grid power supply, and meet lighting and fan needs through solar power supply when the AC grid is out of power.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In the first aspect, the present application provides an AC solar dual-purpose fan light system, comprising: a power circuit module, a controller module, a photovoltaic power supply module, an auxiliary light source module, a main light source module, a circuit detection module and a motor fan module; wherein

[0007] The power circuit module is used to perform AC-DC conversion and provide a stable power supply for the controller module, the photovoltaic light source module and the main light source module;

[0008] The circuit detection module is used to output a first control signal for controlling the conduction of the auxiliary light source module. When it is determined that there is no alternating current and the battery pack in the photovoltaic power supply module has sufficient power, the first control signal is used to control the operation of the auxiliary light source module;

[0009] The photovoltaic power supply module is used for photovoltaic charging and is also used to power the motor fan module and the energy storage light source of the auxiliary light source module;

[0010] The controller module is used to receive a control instruction and control one of the motor fan module, the main light source module and the auxiliary light source module according to the control instruction.

[0011] Optionally, the circuit detection module is specifically configured to:

[0012] Detecting whether there is alternating current; detecting whether the power switch of the power circuit module is closed; detecting whether the battery pack in the photovoltaic power supply module has sufficient power;

[0013] If there is no alternating current, the power switch is closed, and the battery pack has sufficient power; the first control signal is used to instruct the auxiliary light source module to be turned on and the photovoltaic power supply module to discharge; wherein, when the auxiliary light source module is turned on and the photovoltaic power supply module is discharged, the auxiliary light source module works.

[0014] Optionally, the power supply circuit module includes a live wire terminal, a neutral wire terminal, a power switch, a rectifier bridge, a constant voltage circuit, a voltage stabilizing circuit, a first detection resistor and a second detection resistor; wherein

[0015] The live wire end is connected to the AC positive pole of the rectifier bridge through the power switch; the AC negative pole of the rectifier bridge is connected to the neutral wire end, and the AC negative pole is connected to the DC negative pole of the rectifier bridge through the first detection resistor and the second detection resistor in sequence. The DC positive pole of the rectifier bridge is also connected to the constant voltage circuit and the voltage stabilizing circuit in sequence. The reference ground end of the voltage stabilizing circuit is connected to the DC negative pole. The constant voltage circuit is used to power the photovoltaic power supply module and the motor fan module; the voltage stabilizing circuit is used to power the controller module;

[0016] The other end of the first detection resistor away from the AC negative pole is connected to the controller module.

[0017] Optionally, the auxiliary light source module includes a current limiting resistor, an energy storage light source, a second NMOS switch, and a third NMOS switch; wherein:

[0018] One end of the current-limiting resistor is connected to the output end of the constant voltage circuit, the other end of the current-limiting resistor is connected to the positive electrode of the energy storage light source, the negative electrode of the energy storage light source is connected to the drain of the second NMOS switch, the source of the second NMOS switch is connected to the drain of the third NMOS switch, and the source of the third NMOS switch is connected to the DC negative electrode of the rectifier bridge;

[0019] The gate of the second NMOS switch is used to receive the second control signal;

[0020] The gate of the third NMOS switch is configured to receive the first control signal.

[0021] Optionally, the photovoltaic power supply module includes a pull-up resistor, a photovoltaic panel, a charging and balancing circuit, a battery pack, a first PMOS switch, a second PMOS switch, and a first NMOS switch; wherein:

[0022] The first output terminal of the charging and balancing circuit is connected to the ground terminal of the charging and balancing circuit through the photovoltaic panel, and the second output terminal of the charging and balancing circuit is connected to the output terminal of the constant voltage circuit;

[0023] The second output terminal of the charging and balancing circuit is further connected to the drain of the first PMOS switch; the source of the first PMOS switch is connected to the source of the second PMOS switch, the source of the second PMOS switch is further connected to one end of the pull-up resistor, the other end of the pull-up resistor is connected to the gate of the first PMOS switch and the gate of the first PMOS switch respectively, the drain of the second PMOS switch is connected to the third output terminal of the charging and balancing circuit, and the drain of the first PMOS switch is connected to the output terminal of the constant voltage circuit;

[0024] The other end of the pull-up resistor is also connected to the drain of the first NMOS switch, the source of the first NMOS switch is connected to the ground terminal of the charging and balancing circuit, and the gate of the first NMOS switch is used to receive the first control signal.

[0025] The controller module includes a microcontroller unit, an infrared receiving unit and a remote controller; the microcontroller unit is connected to the remote controller via the infrared receiving unit, and the microcontroller unit is powered by the voltage stabilizing circuit;

[0026] The microcontroller unit is configured to:

[0027] receiving a first electrical signal sent by a power circuit module and receiving the first control signal, and determining a system control mode according to the first electrical signal and the first control signal;

[0028] The control instruction sent by the remote controller is obtained through the infrared receiving end; and the auxiliary light source module, the main light source module or the motor fan module is controlled according to the control instruction.

[0029] Optionally, the main light source module includes a main light source driving circuit and a main light source unit, and the main light source driving circuit is used to implement a dimming function of the main light source circuit;

[0030] The input end of the main light source driving circuit is connected to the DC positive pole of the rectifier bridge, and the ground end of the main light source driving circuit is connected to the DC negative pole of the rectifier bridge.

[0031] Optionally, the fan motor module includes a motor control circuit, a DC motor and a fan unit connected in sequence; the motor control circuit is used to control the speed of the DC motor according to the speed regulation signal output by the control module.

[0032] In a second aspect, the present application provides a control method for an AC solar dual-purpose fan light, which is used in a controller module of the AC solar dual-purpose fan light system. The control method for the AC solar dual-purpose fan light includes:

[0033] Acquire a first electrical signal, and determine whether alternating current exists based on the first electrical signal;

[0034] If the AC power is present, determining that the system control mode is the AC power control mode; in the AC power control mode, the controller module controls the main light source module according to the dimming signal and controls the motor fan module according to the speed control signal;

[0035] If the alternating current does not exist, the system control mode is determined to be standby mode or energy storage and discharge mode according to the first control signal; wherein, the first control signal is a signal output by the circuit detection module. In the energy storage and discharge mode, the controller module controls the auxiliary light source module according to the second control signal and controls the motor fan module according to the speed regulation signal.

[0036] Optionally, determining the system control mode as the standby mode or the energy storage and discharge mode according to the first control signal includes:

[0037] Determining whether the first control signal indicates that a first condition is satisfied; the first condition being: there is no AC power, the power switch is closed, and the battery pack has sufficient charge;

[0038] If the first control signal is used to indicate that a first condition is satisfied, determining that the system control mode is the energy storage and discharge mode;

[0039] If the first control signal is used to indicate that the first condition is not satisfied, the system control mode is determined to be the standby mode.

[0040] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0041] The present application provides an AC solar dual-purpose fan light system and a control method. The power circuit module can provide light through the main light source module when the AC power is normally supplied, and charge the photovoltaic power supply module at the same time. The photovoltaic power supply module can perform photovoltaic charging on its own at any time. The circuit detection module is used to obtain a first control signal when it is determined that the AC power is not present and the battery pack in the photovoltaic power supply module is sufficiently charged; the first control signal is used to turn on the photovoltaic power supply module and the auxiliary light source module; when the AC power is not present and the battery pack is sufficiently charged, the photovoltaic power supply module is used to power the energy storage light source and the motor fan. The AC solar dual-purpose fan light system can adapt to the AC power grid and realize adaptive switching between the main light source and the energy storage light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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.

[0043] Figure 1 A schematic diagram of an AC solar dual-purpose fan-lamp system provided in one embodiment of the present application;

[0044] Figure 2 A schematic diagram of an AC solar dual-purpose fan-lamp system provided in another embodiment of the present application;

[0045] Figure 3 for Figure 2 Schematic diagram of the circuit structure of the mid-circuit detection module and the photovoltaic power supply module;

[0046] Figure 4 A flow chart of a control method for an AC / solar dual-purpose fan lamp provided in one embodiment of the present application;

[0047] Figure 5 This is a flow chart of a control method for an AC / solar dual-purpose fan light provided by another embodiment of the present application.

[0048] Description of reference numerals:

[0049] 100-power circuit module;

[0050] 200-circuit detection module;

[0051] 300-main light source module;

[0052] 400- Photovoltaic power supply module;

[0053] 500-motor fan module;

[0054] 600-controller module;

[0055] 700- auxiliary light source module;

[0056] 101 - power switch; 102 - rectifier bridge; 103 - constant voltage circuit; 104 - voltage stabilizing circuit; 105 - first detection resistor; 106 - second detection resistor;

[0057] 301-main light source driving circuit; 302-main light source unit;

[0058] 401 - Photovoltaic panel; 402 - Charging and balancing circuit; 403 - Battery pack; 404 - First PMOS switch; 405 - Second PMOS switch; 406 - First NMOS switch; 407 - Pull-up resistor;

[0059] 501-motor control circuit, 502-DC motor; 503-fan unit;

[0060] 601- microcontroller unit; 602- infrared receiving unit;

[0061] 701 - current limiting resistor; 702 - energy storage light source; 703 - second NMOS switch; 704 - third NMOS switch. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0063] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0064] In an exemplary embodiment, Figure 1 As shown, an AC solar dual-purpose fan light system is provided, comprising a power circuit module 100, a controller module 600, a photovoltaic power supply module 400, an auxiliary light source module 700, a main light source module 300, a circuit detection module 200 and a motor fan module 500. Among them:

[0065] The power circuit module 100 is used to perform AC-DC conversion and provide a stable power supply for the controller module 600, the photovoltaic light source module and the main light source module 300;

[0066] The circuit detection module 200 is configured to output a first control signal for controlling the auxiliary light source module 700 to be turned on. When it is determined that there is no AC power and the battery pack 403 in the photovoltaic power supply module 400 has sufficient power, the first control signal is used to control the auxiliary light source module 700 to operate.

[0067] Photovoltaic power supply module 400, used for photovoltaic charging, and also used to power the energy storage light source of the motor fan module 500 and the auxiliary light source module 700;

[0068] The controller module 600 is configured to receive a control instruction and control one of the motor fan module 500 , the main light source module 300 and the auxiliary light source module 700 according to the control instruction.

[0069] This embodiment provides an AC solar dual-purpose fan light system, in which the power circuit module 100 can provide light through the main light source module 300 when AC power is normally supplied, and charge the photovoltaic power supply module 400 at the same time. The photovoltaic power supply module 400 can perform photovoltaic charging on its own at any time, and obtain a first control signal when the circuit detection module 200 determines that there is no AC power and the power is sufficient; the first control signal is used to turn on the photovoltaic power supply module 400 and the auxiliary light source module 700; when there is no AC power and the power is sufficient, the photovoltaic power supply module 400 is used to power the energy storage light source 702 and the motor fan. The AC solar dual-purpose fan light system can adapt to the AC power grid and realize adaptive switching between the main light source and the energy storage light source.

[0070] In addition, in another exemplary embodiment of the present application, the power circuit module 100 further includes a power switch 101. In order for the power switch 101 to achieve the first control right, the circuit detection module 200 is specifically configured to:

[0071] Detect whether there is AC power; detect whether the power switch 101 of the power circuit module 100 is closed; detect whether the battery pack 403 in the photovoltaic power supply template has sufficient power;

[0072] If there is no AC power, the power switch 101 is closed, and the battery pack 403 is sufficiently charged; the first control signal is used to instruct the auxiliary light source module 700 to be turned on and the photovoltaic power supply module 400 to discharge; wherein, when the auxiliary light source module 700 is turned on and the photovoltaic power supply module 400 is discharged, the auxiliary light source module 700 works.

[0073] As an implementation method, the above determination and output of the first control signal can be achieved through a comparator circuit. The first control signal implements a control signal indication through a low level and a high level.

[0074] Furthermore, for the convenience of description, when instructing to turn on the auxiliary light source module 700 , the signal output by the first control signal is referred to as an EMON signal.

[0075] Furthermore, the EMON signal is a high-level signal, which is used to turn on the energy storage and discharge mode of the photovoltaic power supply module 400 and turn on the auxiliary light source module 700; that is, when there is AC power or the power switch 101 is disconnected or the battery pack 403 is insufficient, the energy storage and discharge mode of the photovoltaic power supply module 400 cannot be turned on, and the auxiliary light source module 700 cannot be turned on.

[0076] like Figure 2 and Figure 3 A connection relationship between the circuit detection module 200 and other modules is provided:

[0077] Specifically, if Figure 2 The circuit detection module 200 sends a signal to the AC1K line to test its impedance and whether the power switch 101 is closed. The impedance value obtained is different, and whether the power switch 101 is closed can be detected according to its impedance value;

[0078] As an embodiment, both the AC1K line and the AC2 line are connected to the circuit detection module 200, and by detecting the voltage or resistance between them, it can be determined whether there is AC power before;

[0079] As an embodiment, the photovoltaic power supply module 400 also sends a signal indicating the power level to the circuit detection module 200, so as to determine whether the battery pack 403 has sufficient power.

[0080] As an implementation method, the detection of the power switch 101 , the power level of the battery pack 403 , and the presence of AC power can all be achieved through existing technologies, which will not be described in detail here.

[0081] In the embodiment of the present application, the power switch 101 has the first control right. Only when the power switch 101 is closed, if there is no AC power and the battery pack 403 has sufficient power, a high-level EMON signal is output, and the purpose of the energy storage light source 702 is achieved through the EMON signal. Its usage is more in line with the usage logic of general lamps, can more conveniently implement lamp management, and improve user experience.

[0082] In order to further provide a feasible AC solar dual-purpose fan light system, it is possible to realize the functions between each module, such as Figure 2 The connection mode and specific structure between the main light source module 300, photovoltaic power supply module 400, motor fan module 500, controller module 600 and auxiliary light source module 700 are further disclosed. Each module is described in detail below:

[0083] As an embodiment, the power circuit module 100 includes a live wire terminal, a neutral wire terminal, a power switch 101, a rectifier bridge 102, a constant voltage circuit 103, a voltage stabilizing circuit 104, a first detection resistor 105 and a second detection resistor 106; wherein

[0084] The live wire end is connected to the AC positive pole of the rectifier bridge 102 through the power switch 101; the AC negative pole of the rectifier bridge 102 is connected to the neutral line end, and the AC negative pole is connected to the DC negative pole of the rectifier bridge 102 through the first detection resistor 105 and the second detection resistor 106 in sequence. The DC positive pole of the rectifier bridge 102 is connected to the constant voltage circuit 103 and the voltage stabilizing circuit 104 in sequence. The voltage stabilizing circuit 104 is connected to the DC negative pole with reference to the ground terminal. The constant voltage circuit 103 is used to power the photovoltaic power supply module 400 and the motor fan module 500; the voltage stabilizing circuit 104 is used to power the controller module 600;

[0085] The other end of the first detection resistor 105 away from the AC negative pole is input to the controller module 600 .

[0086] Specifically, the input end of the constant voltage circuit 103 is connected to the DC positive electrode, the output end of the constant voltage circuit 103 is connected to the input end of the voltage stabilizing circuit 104 ; and the output end of the voltage stabilizing circuit 104 is connected to the controller module 600 .

[0087] Specifically, the output end of the constant voltage circuit 103 is connected to the motor fan module 500 , the output end of the constant voltage circuit 103 is also connected to the input end of the photovoltaic power supply module 400 , and the input end of the constant voltage circuit 103 is also connected to the input end of the auxiliary light source module 700 .

[0088] Specifically, the constant voltage circuit 103 is a DC / DC constant voltage circuit;

[0089] Specifically, the voltage stabilizing circuit 104 is a 5V voltage stabilizing circuit;

[0090] Furthermore, the other end of the first detection resistor 105 away from the AC negative pole is used to send a first electrical signal to the controller module 600. According to the first electrical signal, the controller module 600 can determine the condition of the AC power.

[0091] In an embodiment of the present application, the power circuit module 100 can provide light through the main light source module 300 when the AC power is normally supplied, and at the same time charge the photovoltaic power supply module 400. The photovoltaic power supply module 400 can perform photovoltaic charging on its own at any time to keep the battery pack 403 fully charged.

[0092] As an embodiment, the auxiliary light source module 700 includes a current limiting resistor 701, an energy storage light source 702, a second NMOS switch 703 and a third NMOS switch 704; wherein:

[0093] One end of the current-limiting resistor 701 is connected to the output end of the constant voltage circuit 103, the other end of the current-limiting resistor 701 is connected to the positive electrode of the energy storage light source 702, the negative electrode of the energy storage light source 702 is connected to the drain of the second NMOS switch 703, the source of the second NMOS switch 703 is connected to the drain of the third NMOS switch 704, and the source of the third NMOS switch 704 is connected to the DC negative electrode of the rectifier bridge 102;

[0094] The gate of the second NMOS switch 703 is used to receive the second control signal;

[0095] A gate of the third NMOS switch 704 is configured to receive the first control signal.

[0096] Specifically, the EMON signal in the figure is the first control signal;

[0097] Specifically, the first control signal is an electrical signal, which is a high level or a low level. If it is a high level electrical signal, it can turn on the second NMOS switch 703;

[0098] Specifically, the second control signal is an electrical signal, which is a high level or a low level. If it is a high level electrical signal, it can turn on the third NMOS switch 704;

[0099] Furthermore, the second control signal is obtained from the controller module 600. When the first control signal and the second control signal are both at high levels, the auxiliary light source module 700 is controlled to be turned on and the energy storage light source 702 is turned on.

[0100] Furthermore, the energy storage light source 702 is composed of five 3V lamp beads connected in series, and the current limiting resistor 701 is used to adjust the maximum operating current of the energy storage light source 702.

[0101] Furthermore, in order to realize the discharge control of the photovoltaic power supply module 400 by the first control signal, Figure 3 The photovoltaic power supply module 400 includes a pull-up resistor 407, a photovoltaic panel 401, a charging and balancing circuit 402, a battery pack 403, a first PMOS switch 404, a second PMOS switch 405, and a first NMOS switch 406; wherein:

[0102] A first output terminal of the charging and balancing circuit 402 is connected to the ground terminal of the charging and balancing circuit 402 through the photovoltaic panel 401, and a second output terminal of the charging and balancing circuit 402 is connected to the output terminal of the constant voltage circuit 103;

[0103] The second output terminal of the charging and balancing circuit 402 is also connected to the drain of the first PMOS switch 404; the source of the first PMOS switch 404 is connected to the source of the second PMOS switch 405, and the source of the second PMOS switch 405 is also connected to one end of a pull-up resistor 407. The other end of the pull-up resistor 407 is connected to the gate of the first PMOS switch 404 and the gate of the first PMOS switch 404, respectively. The drain of the second PMOS switch 405 is connected to the third output terminal of the charging and balancing circuit 402; the drain of the first PMOS switch 404 is connected to the output terminal of the constant voltage circuit 103.

[0104] The other end of the pull-up resistor 407 is also connected to the drain of the first NMOS switch 406 . The source of the first NMOS switch 406 is connected to the ground of the charging and balancing circuit 402 . The gate of the first NMOS switch 406 is used to receive the first control signal.

[0105] The charging and balancing circuit 330 is responsible for charging and balancing the voltage of the lithium batteries connected in series and obtaining the power value. This is a mature technology and will not be described in detail here.

[0106] Specifically, in this embodiment, when the power grid is not out, AC power and photovoltaic panels 401 are used to charge battery pack 403, enabling rapid charging. During a power outage, the photovoltaic panels can be used for charging. As long as there is sufficient sunlight, the lithium battery can be fully charged by solar photovoltaic panels 401 alone. Relying solely on the internal lithium battery discharge, basic lighting and fan needs can be provided.

[0107] Specifically, the sources of the first PMOS switch 404 and the second PMOS switch 405 are connected together, the drain of the second PMOS switch 405 is connected to the positive electrode of the battery pack 403, the drain of the first PMOS switch 404 is connected to the CV node, one end of the pull-up resistor 407 is connected to the common source of the two switches, and the other end of the pull-up resistor 407 is connected to the drain of the first NMOS switch 406 together with the gates of the first PMOS switch 404 and the second PMOS switch 405 respectively. The main purpose is to effectively disconnect the positive electrode of the battery pack 403 from the CV node.

[0108] Specifically, the first PMOS switch 404 and the second PMOS switch 405 constitute a direct-release switch in the discharge state. When the first control signal is EMON (i.e., high level), the first NMOS switch 406 is turned on, pulling down the gates of the first PMOS switch 404 and the second PMOS switch 404, that is, turning on the discharge direct-release switch, and directly outputting the voltage of the battery pack 403 with low impedance to the CV circuit node, thereby realizing the discharge of the photovoltaic power supply module 400.

[0109] Specifically, when the first control signal is at a low level, the first NMOS switch 406 is disconnected, and the pull-up resistor 407 will pull up the gate voltage of the first PMOS switch 404 and the second PMOS switch 405, so that the direct-disconnect switch composed of the first PMOS switch 404 and the second PMOS switch 405 is in a disconnected state, regardless of the CV node level, ensuring that no leakage current leaks from the four lithium batteries to the CV node.

[0110] Optionally, battery pack 403 comprises four ternary lithium batteries connected in series. The minimum voltage sum of battery pack 403 is 12V, and the maximum voltage sum is 16.8V. This requires that the open-circuit voltage of solar photovoltaic panel 401 be greater than 16.8V, generally by at least 30%. Therefore, a 24V photovoltaic panel 401 is preferred.

[0111] Furthermore, if the balancing circuit is specifically used for lithium battery series applications, it can detect the voltage of each lithium battery, balance the voltage, and detect the power level. This is a mature technology and will not be described in detail here.

[0112] As an embodiment, the controller module 600 includes a microcontroller unit 601, an infrared receiving unit 602 and a remote controller; the microcontroller unit 601 is connected to the remote controller via the infrared receiving unit 602, and the microcontroller unit 601 is powered by the voltage stabilizing circuit 104;

[0113] Specifically, the positive electrode of the microcontroller unit 601 is connected to the output end of the voltage stabilizing circuit 104 , and the negative electrode of the microcontroller unit 601 is connected to the negative electrode of the DC.

[0114] Specifically, the microcontroller unit 601 is used to:

[0115] Receive a first electrical signal sent by the power circuit module 100 and a first control signal, and determine a system control mode according to the first electrical signal and the first control signal;

[0116] The infrared receiving end obtains the control instruction sent by the remote controller; and controls the auxiliary light source module 700 or the main light source module 300 or the motor fan module 500 according to the control instruction.

[0117] Specifically, the microcontroller unit 601 is a single chip microcomputer, and existing control methods include Bluetooth remote control, infrared remote control, etc. In this embodiment, the infrared receiving unit 602 is responsible for receiving the remote control signal, performing preliminary shaping processing, and then sending it to the microcontroller unit 601 for decoding.

[0118] Optionally, infrared receiver remote control can also replace existing remote control methods, including but not limited to: network control, artificial intelligence control, voice control, mobile phone APP remote control, 2.4G remote control, Bluetooth remote control, etc.

[0119] Specifically, the control instruction includes a dimming signal, a speed regulation signal, and a second control signal, and the second control signal is used to instruct the energy storage light source 702 to switch on and off;

[0120] Specifically, the microcontroller unit 601 is further configured to:

[0121] Sending a second control signal to the auxiliary light source module 700;

[0122] Sending a dimming signal to the main light source module 300;

[0123] Send a speed adjustment signal to the motor fan module 500.

[0124] According to this embodiment, no matter whether the main light source module 300 or the energy storage light source 702 is working, the fan unit 503 can be controlled by the remote controller.

[0125] As an embodiment, the main light source module 300 includes a main light source driving circuit 301 and a main light source unit 302. The main light source driving circuit 301 is used to implement the dimming function of the main light source circuit;

[0126] An input terminal of the main light source driving circuit 301 is connected to the DC positive electrode of the rectifier bridge 102 , and a ground terminal of the main light source driving circuit 301 is connected to the DC negative electrode of the rectifier bridge 102 .

[0127] As an embodiment, the fan motor module includes a motor control circuit 501 , a DC motor 503 and a fan unit 503 connected in sequence; the motor control circuit 501 is used to control the speed of the DC motor 503 according to the speed regulation signal output by the microcontroller unit 601 .

[0128] Optionally, the DC motor 503 is a three-phase brushless DC motor. The three-phase brushless DC motor requires a relatively complex motor control circuit 501, which is generally driven and controlled by a dedicated 32-bit high-speed MCU (Microcontroller Unit).

[0129] Specifically, the DC motor 503 requires a stable DC power supply, that is, the constant voltage output CV provided by the constant voltage circuit 103, which provides a stable DC power supply for the remote control and motor control circuit 501, generally with a voltage between 12V and 24V.

[0130] Optionally, the DC motor 503 in this application uses a three-phase brushless DC motor with an operating voltage between 12V and 24V. It has many advantages, including high power (up to 20W or more), high efficiency (generally greater than 90%), small size, low noise (significantly lower than that of ordinary AC motor fans), precise speed regulation, and stable operation, making it suitable for mid- to high-end applications. The 5V single-phase DC motor currently used in ordinary solar fan lights has some inherent disadvantages: low power (usually no more than 6W), difficulty in precise speed regulation, and is therefore suitable for low-end applications.

[0131] Furthermore, in order to match the three-phase brushless DC motor, the battery pack 403 adopts a combination of 4 or more lithium batteries in series. If the battery pack 403 is composed of 4 lithium batteries in series, the maximum voltage sum of the 4 ternary lithium batteries in series is equal to 16.8V, and the minimum voltage sum is equal to 12V, which meets the power supply requirements of the three-phase BLDC motor used in the current mainstream AC fan unit 503 lamp.

[0132] Furthermore, the light source requires precise control of the brightness and color temperature, and the motor speed also has multiple gears, with a maximum of 7 wind speed gears. The above-mentioned main light source drive circuit 301 and motor control circuit 501 can both use existing technology and standard remote control to achieve brightness and wind speed gears.

[0133] The present application provides an AC solar dual-purpose fan-lamp system with the following technical effects:

[0134] When the grid is operating normally, it can provide high-quality lighting, a high-performance, low-noise, high-power three-phase BLDC motor, and rapidly charge the lithium battery using grid power. Meanwhile, the photovoltaic panel 401 converts solar energy into electricity, which can also charge the lithium battery, resulting in faster charging.

[0135] After a power outage, the photovoltaic panel 401 can still charge the lithium battery, and the internal lithium battery discharges to provide basic lighting and fan needs. As long as there is sufficient sunlight, the lithium battery can be fully charged by the solar photovoltaic panel alone.

[0136] The power switch 101 has the first control right. Only when the power switch 101 is closed, if there is no AC power and the battery pack 403 has sufficient power, a high-level EMON signal is output, and the purpose of the energy storage light source 702 working is achieved through the EMON signal. Its usage is more in line with the usage logic of general lamps, which can more conveniently realize lamp management and improve user experience.

[0137] It is also possible to completely not rely on the power grid, and only charge the lithium battery through the photovoltaic panel 401, and rely on the internal lithium battery to discharge, so as to provide basic lighting and fan needs.

[0138] This system has a simple structure and low cost, which is almost the same as that of ordinary solar fan lights, and has good market prospects.

[0139] Based on the same inventive concept, on the basis of the above AC solar dual-purpose fan light system, the embodiment of the present application also provides a control method for an AC solar dual-purpose fan light, which is used in the above controller module 600, specifically in the microcontroller unit 601 of the controller module 600. Figure 4 The control method of the AC solar dual-purpose fan light includes:

[0140] Step 4001: Acquire a first electrical signal and determine whether alternating current (AC) is present based on the first electrical signal; if AC is present, execute step 4002; if not, execute step 4003;

[0141] Specifically, the presence of AC power means that the grid has power and the power switch 101 is closed;

[0142] Specifically, the first electrical signal is a signal sent from the other end of the first detection resistor 105 in the system away from the AC negative pole to the microprocessor unit. According to the first electrical signal, the microcontroller unit 601 can determine the condition of the AC power.

[0143] Specifically, the first detection resistor 105 and the second detection resistor 106 detect the on / off state of the power switch 101. If the power switch 101 is closed (power is present in the grid), the microprocessor unit receives a 5V pulse signal with a 50% duty cycle and a frequency of 50Hz / 60Hz. If the power switch 101 is open, the microprocessor unit receives a zero-level signal. In this way, the microprocessor unit can identify the user's control intention for the power switch 101 and the AC power supply conditions, thereby implementing different control methods for the light source or motor.

[0144] Step 4002: Determine that the system control mode is an AC control mode; in the AC control mode, the controller module controls the main light source module according to the dimming signal and controls the motor fan module according to the speed control signal;

[0145] Specifically, in the AC control mode, the motor fan module 500 and the main light source module 300 are powered by AC power. In the AC control mode, the motor speed regulation and the dimming of the main light source can be achieved;

[0146] Specifically, when a dimming signal is obtained, a dimming signal is sent to the main light source module 300; when a speed regulation signal is obtained, a speed regulation signal is sent to the motor fan module 500;

[0147] Specifically, the microcontroller unit 601 obtains the control instructions sent by the remote controller through the infrared receiving terminal; the control instructions include the dimming signal DIM1 and the speed adjustment signal FAN.

[0148] Step 4003, determining whether the system control mode is a standby mode or an energy storage and discharge mode based on the first control signal; wherein the first control signal is a signal output by the circuit detection module. In the energy storage and discharge mode, the controller module controls the auxiliary light source module according to the second control signal and controls the motor fan module according to the speed regulation signal.

[0149] Specifically, if there is no alternating current, the system control mode is determined according to the first control signal.

[0150] In another embodiment of the present application, Figure 5 , step 4003 can be replaced by the following steps:

[0151] Step 5001, determine whether the first control signal indicates that the first condition is met; the first condition is: there is no AC power, the power switch is closed, and the battery pack is fully charged; if met, execute step 5002, if not met, execute step 5003.

[0152] Specifically, if it is determined according to step 4001 that there is no AC power, there are two situations: situation 1: the power switch 101 is off; situation 2: the power is on and the grid is out of power. The above two situations require further determination based on the first control signal.

[0153] Specifically, the first control signal is a signal sent by the circuit detection module 200 to the microprocessor unit 601. According to the setting of the above system, if the first condition is met, the first control signal output by the circuit detection module 200 is a high level; if the first condition is not met, the first control signal output by the circuit detection module 200 is a low level; then the microprocessor unit 601 only needs to determine whether the first control signal is a high level or a low level to determine whether the system meets the first condition.

[0154] Step 5002, determining that the system control mode is an energy storage and discharge mode;

[0155] Specifically, when the first control signal is at a high level, that is, when the first condition is met, it can be seen that the power switch 101 is closed, and at the same time the battery pack 403 has sufficient power to drive the auxiliary light source module 700 and the motor fan module 500; in accordance with the principle that the power switch 101 has the first control right in this application, the system control mode is the energy storage and discharge mode.

[0156] Specifically, at the same time, the first control signal is at a high level, and the input is to the first NMOS switch 406 according to the photovoltaic power supply module 400. The photovoltaic power supply module 400 is also in the energy storage and discharge mode, which is used to power the auxiliary light source module 700 and the motor fan module 500; the input is to the third NMOS switch 704 of the auxiliary light source module 700, and the third NMOS switch 704 is turned on.

[0157] Specifically, in the energy storage and discharge mode, the microcontroller unit 601 obtains the control instructions sent by the remote control end through the infrared receiving end; the control instructions include a second control signal DIM2 and a speed regulation signal FAN, and controls the auxiliary light source module 700 according to the second control signal, and controls the motor fan module 500 according to the speed regulation signal.

[0158] Furthermore, in the energy storage and discharge mode, the third NMOS switch 704 is turned on; if the second control signal is at a high level, the second NMOS switch 703 is also turned on, and the energy storage light source 702 is turned on.

[0159] Step 5003: Determine whether the system control mode is the standby mode.

[0160] Specifically, the standby mode is not to control the system according to the instructions of the remote controller.

[0161] The present application provides a control method for an AC solar dual-purpose fan light, which can be used in the above-mentioned AC solar dual-purpose fan light system. It can determine the system control mode, realize the control of the AC solar dual-purpose fan light system by a remote control, complete the adaptive switching of solar energy and AC power grid power supply, and realize lighting and fan needs through solar power supply when the AC power grid is out of power.

[0162] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0163] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core concept of this application. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of this application. In summary, the content of this specification should not be construed as limiting this application.

Claims

1. An AC solar dual-purpose fan light system, characterized in that: The AC solar dual-purpose fan light system includes: a power circuit module, a controller module, a photovoltaic power supply module, an auxiliary light source module, a main light source module, a circuit detection module and a motor fan module; The power circuit module is used to perform AC-DC conversion and provide a stable power supply for the controller module, the photovoltaic light source module and the main light source module; The circuit detection module is used to output a first control signal for controlling the conduction of the auxiliary light source module. When it is determined that there is no AC power and the battery pack in the photovoltaic power supply module has sufficient power, the first control signal is used to control the operation of the auxiliary light source module; The photovoltaic power supply module is used for photovoltaic charging and is also used to power the motor fan module and the energy storage light source of the auxiliary light source module; The controller module is used to receive a control instruction and control one of the motor fan module, the main light source module and the auxiliary light source module according to the control instruction.

2. The AC solar dual-purpose fan light system according to claim 1, characterized in that: The circuit detection module is specifically used to: Detecting whether there is alternating current; detecting whether the power switch of the power circuit module is closed; detecting whether the battery pack in the photovoltaic power supply module has sufficient power; If there is no alternating current, the power switch is closed, and the battery pack has sufficient power; the first control signal is used to instruct the auxiliary light source module to be turned on and the photovoltaic power supply module to discharge; wherein, when the auxiliary light source module is turned on and the photovoltaic power supply module is discharged, the auxiliary light source module works.

3. The AC solar dual-purpose fan light system according to claim 1 or 2, characterized in that: The power supply circuit module includes a live wire terminal, a neutral wire terminal, a power switch, a rectifier bridge, a constant voltage circuit, a voltage stabilizing circuit, a first detection resistor and a second detection resistor; wherein The live wire end is connected to the AC positive pole of the rectifier bridge through the power switch; the AC negative pole of the rectifier bridge is connected to the neutral wire end, and the AC negative pole is connected to the DC negative pole of the rectifier bridge through the first detection resistor and the second detection resistor in sequence. The DC positive pole of the rectifier bridge is connected to the constant voltage circuit and the voltage stabilizing circuit in sequence, and the reference ground end of the voltage stabilizing circuit is connected to the DC negative pole. The constant voltage circuit is used to power the photovoltaic power supply module and the motor fan module; the voltage stabilizing circuit is used to power the controller module; The other end of the first detection resistor away from the AC negative pole is connected to the controller module.

4. The AC solar dual-purpose fan light system according to claim 3, characterized in that: The auxiliary light source module includes a current limiting resistor, an energy storage light source, a second NMOS switch and a third NMOS switch; wherein: One end of the current-limiting resistor is connected to the output end of the constant voltage circuit, the other end of the current-limiting resistor is connected to the positive electrode of the energy storage light source, the negative electrode of the energy storage light source is connected to the drain of the second NMOS switch, the source of the second NMOS switch is connected to the drain of the third NMOS switch, and the source of the third NMOS switch is connected to the DC negative electrode of the rectifier bridge; The gate of the second NMOS switch is used to receive the second control signal; The gate of the third NMOS switch is configured to receive the first control signal.

5. The AC solar dual-purpose fan light system according to claim 3, characterized in that: The photovoltaic power supply module includes a pull-up resistor, a photovoltaic panel, a charging and balancing circuit, a battery pack, a first PMOS switch, a second PMOS switch and a first NMOS switch; wherein: The first output terminal of the charging and balancing circuit is connected to the ground terminal of the charging and balancing circuit through the photovoltaic panel, and the second output terminal of the charging and balancing circuit is connected to the output terminal of the constant voltage circuit; The second output terminal of the charging and balancing circuit is further connected to the drain of the first PMOS switch; the source of the first PMOS switch is connected to the source of the second PMOS switch, the source of the second PMOS switch is further connected to one end of the pull-up resistor, the other end of the pull-up resistor is connected to the gate of the first PMOS switch and the gate of the first PMOS switch respectively, the drain of the second PMOS switch is connected to the third output terminal of the charging and balancing circuit, and the drain of the first PMOS switch is connected to the output terminal of the constant voltage circuit; The other end of the pull-up resistor is also connected to the drain of the first NMOS switch, the source of the first NMOS switch is connected to the ground terminal of the charging and balancing circuit, and the gate of the first NMOS switch is used to receive the first control signal.

6. The AC solar dual-purpose fan light system according to claim 3, characterized in that: The controller module includes a microcontroller unit and an infrared receiving unit; the microcontroller unit is connected to the remote control via the infrared receiving unit, and the microcontroller unit is powered by the voltage stabilizing circuit; The microcontroller unit is configured to: receiving a first electrical signal sent by a power circuit module and receiving the first control signal, and determining a system control mode according to the first electrical signal and the first control signal; The control instruction sent by the remote controller is obtained through the infrared receiving end; and the auxiliary light source module, the main light source module or the motor fan module is controlled according to the control instruction.

7. The AC solar dual-purpose fan light system according to claim 4, characterized in that: The main light source module includes a main light source driving circuit and a main light source unit, wherein the main light source driving circuit is used to realize the dimming function of the main light source circuit; The input end of the main light source driving circuit is connected to the DC positive pole of the rectifier bridge, and the ground end of the main light source driving circuit is connected to the DC negative pole of the rectifier bridge.

8. The AC solar dual-purpose fan light system according to claim 2, characterized in that: The fan motor module includes a motor control circuit, a DC motor and a fan unit connected in sequence; the motor control circuit is used to control the speed of the DC motor according to the speed regulation signal output by the control module.

9. A control method for an AC / solar dual-purpose fan light, characterized in that: A controller module for an AC solar dual-purpose fan light system according to any one of claims 1 to 8, wherein the control method of the AC solar dual-purpose fan light comprises: Acquire a first electrical signal, and determine whether alternating current exists based on the first electrical signal; If the AC power is present, determining that the system control mode is the AC power control mode; in the AC power control mode, the controller module controls the main light source module according to the dimming signal and controls the motor fan module according to the speed control signal; If the alternating current does not exist, the system control mode is determined to be standby mode or energy storage and discharge mode according to the first control signal; wherein, the first control signal is a signal output by the circuit detection module. In the energy storage and discharge mode, the controller module controls the auxiliary light source module according to the second control signal and controls the motor fan module according to the speed regulation signal.

10. The control method of the AC solar dual-purpose fan lamp according to claim 9, characterized in that: The step of determining whether the system control mode is a standby mode or an energy storage and discharge mode according to the first control signal includes: Determining whether the first control signal indicates that a first condition is satisfied; the first condition being: there is no AC power, the power switch is closed, and the battery pack has sufficient charge; If the first control signal is used to indicate that a first condition is satisfied, determining that the system control mode is the energy storage and discharge mode; If the first control signal is used to indicate that the first condition is not satisfied, the system control mode is determined to be the standby mode.

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