LED constant-current power supply of integrated controller and dimming system

Abstract

The utility model relates to the technical field of LED power supplies, and discloses an LED constant current power supply of an integrated controller, which comprises a shell and a circuit board, the circuit board is arranged in the shell, and a control panel is arranged on the front side of the shell. The control panel is electrically connected with the circuit board, and the circuit board is provided with an input port, an output port, an AC-DC conversion circuit, a power supply circuit, a constant-current DC-DC dimming unit, a control unit and a panel input control circuit. The input port is electrically connected with the input end of the AC-DC conversion circuit, and the output end of the AC-DC conversion circuit is electrically connected with the input end of the constant-current DC-DC dimming unit and the input end of the power supply circuit. The output end of the constant-current DC-DC dimming unit is electrically connected with the output port, and the control panel is electrically connected with the control unit through the panel input control circuit. The constant-current DC-DC dimming unit adjusts output current under the control of the control circuit, and the power supply circuit is used for supplying power to the control unit. The LED constant-current power supply is convenient to install, and the installation and use experience of a terminal user can be improved.

Description

An LED constant current power supply and dimming system with integrated controller Technical Field

[0001] This utility model relates to the field of LED power supply technology, specifically to an LED constant current power supply and dimming system with an integrated controller. Background Technology

[0002] As LED dimming power supplies have evolved, dimming methods have become increasingly diverse, and the topologies for various applications have matured. Previously, most LED power supplies were independent, existing as separate execution components controlled by dimmers and installed separately, leading to difficulties in installation and wiring. Therefore, there is a need to design an LED power supply that can solve these technical problems to improve the installation and user experience for end users. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, the purpose of this invention is to provide an LED constant current power supply with an integrated controller, which integrates the power supply and dimmer into one unit, eliminating the need for separate slotting and wiring. This improves the convenience of installation and use for end users.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: An LED constant current power supply with an integrated controller includes a housing and a circuit board. The circuit board is disposed inside the housing. A control panel is disposed on the front of the housing. The control panel is electrically connected to the circuit board. The circuit board is provided with an input port, an output port, an AC-DC conversion circuit, a power supply circuit, a constant current DC-DC dimming unit, a control unit, and a panel input control circuit. The input port is electrically connected to the input terminal of the AC-DC conversion circuit. The output terminal of the AC-DC conversion circuit is electrically connected to the input terminals of the constant current DC-DC dimming unit and the power supply circuit, respectively. The output terminal of the constant current DC-DC dimming unit is electrically connected to the output port. The control panel is electrically connected to the input terminal of the panel input control circuit. The output terminal of the panel input control circuit is electrically connected to the control unit. The constant current DC-DC dimming unit adjusts the output current under the control of the control circuit to control the brightness and / or color temperature of the lamp load. The power supply circuit is used to supply power to the control unit.

[0005] Compared to existing technologies, the advantages of this invention are as follows: This LED constant current power supply integrates the constant current power supply, control unit, and control panel. The control panel can input control signals to the control unit, which in turn controls the constant current power supply to adjust its output current, thereby regulating the brightness, color temperature, or color of the LED lamps. Because this LED constant current power supply integrates the functions of a power supply and a dimmer, there is no need to separately install a dimmer and a power supply, nor to perform separate wiring for them. This reduces the installation difficulty of the LED lamp dimming control system and improves the installation and user experience for end users.

[0006] The LED constant current power supply of the aforementioned integrated controller also includes a parameter setting circuit, which is electrically connected to the control unit and is used to set the control parameters of the control unit.

[0007] The LED constant current power supply of the aforementioned integrated controller also includes a PUSH dimming circuit. The input terminal of the PUSH dimming circuit is used to connect to the PUSH button, and the output terminal of the PUSH dimming circuit is electrically connected to the control unit. The PUSH dimming circuit is used to detect the state of the PUSH button.

[0008] The LED constant current power supply of the aforementioned integrated controller also includes a wireless dimming circuit, which is electrically connected to the control unit and is used for wireless communication between the control unit and external terminal devices.

[0009] The LED constant current power supply of the aforementioned integrated controller, the control panel is provided with a switch control device, a brightness control device and / or a color temperature control device, the switch control device, the brightness control device and the color temperature control device include at least one of DIP switches, potentiometers, buttons, touch screens and NFC modules.

[0010] The LED constant current power supply of the aforementioned integrated controller includes an AC-DC conversion circuit comprising a rectifier filter circuit and a flyback circuit. The input terminal of the rectifier filter circuit is electrically connected to the input port, the output terminal of the rectifier filter circuit is electrically connected to the input terminal of the flyback circuit, and the output terminal of the flyback circuit is electrically connected to the input terminal of the power supply circuit and the constant current DC-DC dimming unit.

[0011] The LED constant current power supply of the aforementioned integrated controller includes a constant current DC-DC dimming unit comprising a controlled switching circuit and at least one BUCK step-down module. The input terminals of the control power supply of the BUCK step-down module are electrically connected to the output terminals of the AC-DC conversion circuit through the controlled switching circuit. The output terminals of the output power supply of the BUCK step-down module are electrically connected to the output terminals of the AC-DC conversion circuit. The output terminals of the BUCK step-down module are electrically connected to the output port. Both the controlled switching circuit and the BUCK step-down module are controlled by the control unit.

[0012] The LED constant current power supply of the aforementioned integrated controller includes at least one of a DIP switch and an NFC module in the parameter setting circuit.

[0013] The LED constant current power supply of the aforementioned integrated controller includes a PUSH dimming circuit comprising a resistor, a diode, and an optocoupler. The positive terminal of the input of the optocoupler is electrically connected to the negative terminal of diode D6 through resistor R40. The positive terminal of diode D6 is electrically connected to the L terminal of the PUSH button through resistor R38. The negative terminal of the input of the optocoupler is electrically connected to the N terminal of the PUSH button. The negative terminal of the input of the optocoupler is also electrically connected to the positive terminal of diode D7. The negative terminal of diode D7 is electrically connected to the positive terminal of the input of the optocoupler. The output of the optocoupler is electrically connected to the control unit.

[0014] A dimming system includes a PUSH button, a luminaire load, and an LED constant current power supply with an integrated controller. The input port of the LED constant current power supply is connected to AC power, the output port of the LED constant current power supply is electrically connected to the luminaire load, and the PUSH button is electrically connected to the input terminal of the PUSH dimming circuit of the LED constant current power supply.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the LED constant current power supply according to the first embodiment of this utility model;

[0017] Figure 2 is an exploded view of the LED constant current power supply according to the first embodiment of this utility model;

[0018] Figure 3 is a schematic block diagram of the circuit board of the first embodiment of this utility model;

[0019] Figure 4 is a schematic diagram of the AC-DC conversion circuit of the first embodiment of this utility model;

[0020] Figure 5 is a schematic diagram of the constant current DC-DC dimming unit of the first embodiment of this utility model;

[0021] Figure 6 is a schematic block diagram of the circuit board of the second embodiment of this utility model;

[0022] Figure 7 is an exploded view of the LED constant current power supply according to the third embodiment of this utility model;

[0023] Figure 8 is a schematic block diagram of the circuit board of the third embodiment of this utility model;

[0024] Figure 9 is a schematic diagram of the PUSH dimming circuit of the third embodiment of this utility model;

[0025] Figure 10 is a schematic diagram of the dimming system according to an embodiment of the present invention.

[0026] Explanation of icon numbers:

[0027] 100 Housing, 200 Circuit Board, 300 Control Panel, 310 Brightness Controller, 320 Switch Controller, 330 Color Temperature Controller. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below.

[0029] Example 1:

[0030] Referring to Figures 1 to 3, the first embodiment of this utility model provides an LED constant current power supply with an integrated controller, including a housing 100 and a circuit board 200. A control panel 300 is provided on the front of the housing 100, and the circuit board 200 is disposed inside the housing 100. The control panel 300 is electrically connected to the circuit board 200, and the circuit board 200 is disposed on the back side of the control panel 300. The circuit board 200 is provided with an input port, an output port, an AC-DC conversion circuit, a power supply circuit, a constant current DC-DC dimming unit, a control unit, and a panel input control circuit. The input port is used to connect to mains power, and the output port is used to connect to the LED lighting load. The surface of the housing 100 is provided with cable guide holes for cables connected to the input port and the output port to pass through. The input terminal of the AC-DC conversion circuit is connected to the mains power through the input port. The AC-DC conversion circuit is used to convert the AC power of the mains power into DC power. The output terminal of the AC-DC conversion circuit is electrically connected to the input terminal of the constant current DC-DC dimming unit and the power supply circuit. The output of the constant current DC-DC dimming unit is electrically connected to the luminaire load via its output port. Under the control of the control unit, the constant current DC-DC dimming unit adjusts the output current value to form a controllable constant current source, thereby adjusting the brightness, color temperature, and color of the luminaire. The input of the panel input control circuit is electrically connected to the control panel 300. The panel input control circuit is located on the circuit board on the back of the control panel, and its output is electrically connected to the control unit. The panel input control circuit converts the operations on the control panel 300 into corresponding electrical signals, which are then sent to the control unit. This LED constant current power supply integrates the constant current source and the dimmer, thus reducing the difficulty of installation by requiring only slotting and wiring for the installation of the LED constant current power supply when arranging the dimming control circuit of the luminaire. This facilitates use and installation for end users and improves their user experience.

[0031] Referring to Figure 4, in this embodiment, the AC-DC conversion circuit includes a rectifier-filter circuit and a flyback circuit. The input terminal of the rectifier-filter circuit is electrically connected to the input port, and the output terminal is electrically connected to the input terminal of the flyback circuit, used to rectify and filter the mains power. The output terminal of the flyback circuit is electrically connected to the input terminal of the power supply circuit and the constant current DC-DC dimming unit. The flyback circuit is used to step down the rectified mains power, convert it into a stable voltage, and isolate the input and output.

[0032] Referring to Figure 5, in this embodiment, the constant current DC-DC dimming unit includes a controlled switching circuit and two BUCK step-down modules and their peripheral circuitry. The input terminals of the control power supply for both BUCK step-down modules are electrically connected to the output terminal of the flyback circuit via the controlled switching circuit. The output terminals of the output power supply for both BUCK step-down modules are electrically connected to the output terminal of the flyback circuit. The output terminals of the two BUCK step-down modules are respectively electrically connected to two different output terminals in the output port, used to connect the cool-colored LED beads and warm-colored LED beads of the lamp load, respectively, so as to adjust the color temperature of the lamp by adjusting the ratio of cool-colored light to warm-colored light. Both the BUCK step-down modules and the controlled switching circuit are controlled by the control unit. The controlled switching circuit is used to control the on / off connection between the input terminal of the BUCK step-down module and the flyback circuit under the control of the control unit, thereby controlling the switching of the lamp. The BUCK step-down modules are used to adjust the output current under the control of the control unit, thereby controlling the power of each LED bead in the connected lamp load. In this embodiment, the controlled switch circuit consists of transistors Q3 and Q4, and some current-limiting resistors. The BUCK step-down module uses a BUCK step-down chip. In some embodiments, the constant current DC-DC dimming unit may also include three or more BUCK step-down modules. The output terminals of the multiple BUCK step-down modules are electrically connected to LED beads of different colors in the lamp load to achieve color adjustment of the lamp.

[0033] The power supply circuit should preferably use a step-down circuit. In this embodiment, a 3.3V BUCK circuit is used to step down the DC power output from the flyback circuit to a stable 3.3V voltage for the control unit. In this embodiment, the control unit consists of a microcontroller and its peripheral circuits.

[0034] It is understandable that the control panel 300 should be equipped with control devices to allow users to control the switching of the lights and adjust their brightness, color temperature, and color. These control devices can be potentiometers, DIP switches, rotary encoders, buttons, touchscreens, or even NFC modules. Referring to Figure 1, in this embodiment, the control panel 300 is equipped with a switch control device 320, a brightness control device 310, and a color temperature control device 330, which are used to control the on / off state of the lights, adjust their brightness, and adjust their color temperature, respectively. The switch control device 320 is a rocker switch, while both the brightness control device 310 and the color temperature control device 330 are sliding potentiometers. It is understood that the specific structure of the panel input control circuit is determined by the control devices on the control panel 300. If the control device is a rotary encoder, the panel input control circuit is a rotary encoder circuit; if it is a button, it is a button circuit; and if it is a touchscreen, it is a touchscreen driver circuit.

[0035] Example 2:

[0036] Referring to Figure 6, this embodiment is basically the same in structure as Embodiment 1, except that it also includes a parameter setting circuit. This parameter setting circuit is electrically connected to the control unit and is used to set control parameters including, but not limited to, maximum output current, dimming curve, dimming PWM frequency, and temperature protection limits. The parameter setting circuit may include a DIP switch or an NFC module. The DIP switch can connect resistors of different values ​​to a pin of the control unit through different DIP combinations, thereby adjusting the voltage value fed back to the control unit and allowing the control unit to determine the corresponding maximum output current based on the input voltage value. The NFC module can directly communicate with a mobile phone with NFC read / write functionality and write the modified control parameters into the control unit via communication protocols such as UART, IIC, or SPI.

[0037] Example 3:

[0038] Referring to Figures 7 and 8, the structure of this embodiment is basically the same as that of Embodiment 2. The difference is that the input port and output port are directly exposed on the outer surface of the housing 100 through the clearance notch on the surface of the housing 100. The controller on the control panel 300 adopts a pressable rotary encoder, which can switch the control items by the number of presses and the duration. For example, a short press can realize the on / off control of the lamp, and a long press can switch between adjusting the color temperature and brightness. The brightness value or color temperature value can be adjusted by rotating the handle of the rotary encoder. At the same time, this embodiment also includes a PUSH dimming circuit and a wireless dimming circuit. The input end of the PUSH dimming circuit is electrically connected to the input port, and the input port is electrically connected to the PUSH button. The output end is electrically connected to the control unit, so that it can form a dual-control dimming control system for the lamp with the PUSH button. Different control and adjustment of the lamp can be realized by detecting the pressing duration and pressing frequency of the PUSH button. The wireless dimming circuit is electrically connected to the control unit and is used to communicate with external terminal devices, such as mobile phones or whole-house smart control terminals. It can communicate with terminal devices through methods not limited to WIFI, ZigBee, Bluetooth, NB-IoT or LoRa to achieve wireless control of the lights.

[0039] Referring to Figure 9, since the PUSH switch is typically connected in series in the control circuit of the lighting fixture and directly connected to the mains power, the PUSH dimming circuit needs to detect the state of the PUSH button through an optocoupler. In this embodiment, the PUSH dimming circuit includes a resistor, a diode, and an optocoupler. The positive terminal of the input of optocoupler DU1 is electrically connected to the negative terminal of diode D6 through resistor R40. The positive terminal of diode D6 is electrically connected to the L terminal of the PUSH button through resistor R38. The negative terminal of the input of optocoupler DU1 is electrically connected to the N terminal of the PUSH button. The negative terminal of the input of optocoupler DU1 is also electrically connected to the positive terminal of diode D7. The negative terminal of diode D7 is electrically connected to the positive terminal of the input of optocoupler DU1. The output of optocoupler DU1 is electrically connected to the control unit. This PUSH button circuit detects the half-wave mains input waveform through two diodes. When the PUSH button is pressed, optocoupler DU1 conducts under the drive of a positive sine wave. In some embodiments, the PUSH button circuit may also be composed of a rectifier bridge or four or more diodes to achieve full-wave input detection.

[0040] Referring to Figure 10, the dimming system of this embodiment includes an LED constant current power supply of the integrated controller described in the third embodiment above, a PUSH button, and a lamp load. The L terminal of the PUSH button is connected to the live wire, and the N terminal is connected to the input terminal of the PUSH dimming circuit in the input port of the LED constant current power supply. The input terminal of the AC-DC conversion circuit in the input port of the LED constant current power supply is connected to the live and neutral wires of the mains power supply, respectively. The output port of the LED constant current power supply is electrically connected to the lamp load. This dimming system allows for dual control of the lamp load via the PUSH button and the control panel 300 on the LED constant current power supply, enabling control of the same lamp load from two different locations within the house. Furthermore, since the PUSH dimming circuit can detect the state of the PUSH button and convert it into a level signal to be sent to the control unit, the system can detect the pressing time and frequency of the PUSH button to achieve functions such as switching the lamp on and off, and adjusting brightness or color temperature.

[0041] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0043] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0044] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An integrated controller LED constant current power supply, characterized in that, The device includes a housing (100) and a circuit board (200), the circuit board (200) being disposed within the housing (100). A control panel (300) is disposed on the front side of the housing (100), the control panel (300) being electrically connected to the circuit board (200). The circuit board (200) is provided with an input port, an output port, an AC-DC conversion circuit, a power supply circuit, a constant current DC-DC dimming unit, a control unit, and a panel input control circuit. The input port is electrically connected to the input terminal of the AC-DC conversion circuit. The output terminal of the conversion circuit is electrically connected to the input terminal of the constant current DC-DC dimming unit and the power supply circuit, respectively. The output terminal of the constant current DC-DC dimming unit is electrically connected to the output port. The control panel (300) is electrically connected to the input terminal of the panel input control circuit. The output terminal of the panel input control circuit is electrically connected to the control unit. The constant current DC-DC dimming unit adjusts the output current under the control of the control circuit to achieve control of the brightness and / or color temperature of the lamp load. The power supply circuit is used to supply power to the control unit.

2. The integrated controller's LED constant current power supply of claim 1, wherein, It also includes a parameter setting circuit, which is electrically connected to the control unit and is used to set the control parameters of the control unit.

3. The LED constant current power supply with integrated controller according to claim 1, characterized in that, It also includes a PUSH dimming circuit, the input of which is connected to the PUSH button, and the output of which is electrically connected to the control unit. The PUSH dimming circuit is used to detect the state of the PUSH button.

4. The integrated controller LED constant current power supply of claim 1, wherein, It also includes a wireless dimming circuit, which is electrically connected to the control unit and is used for wireless communication between the control unit and external terminal devices.

5. The integrated controller LED constant current power supply of claim 1, wherein, The control panel (300) is provided with a switch controller (320), a brightness controller (310), and / or a color temperature controller (330), wherein the switch controller (320), the brightness controller (310), and the color temperature controller (330) include at least one of a DIP switch, a potentiometer, a button, a touch screen, and an NFC module.

6. The integrated controller LED constant current power supply of claim 1, wherein, The AC-DC conversion circuit includes a rectifier filter circuit and a flyback circuit. The input terminal of the rectifier filter circuit is electrically connected to the input port, the output terminal of the rectifier filter circuit is electrically connected to the input terminal of the flyback circuit, and the output terminal of the flyback circuit is electrically connected to the input terminal of the power supply circuit and the constant current DC-DC dimming unit.

7. The LED constant current power supply with integrated controller according to claim 1, characterized in that, The constant current DC-DC dimming unit includes a controlled switch circuit and at least one BUCK step-down module. The input terminals of the control power supply of the BUCK step-down module are electrically connected to the output terminals of the AC-DC conversion circuit through the controlled switch circuit. The output terminals of the output power supply of the BUCK step-down module are electrically connected to the output terminals of the AC-DC conversion circuit. The output terminals of the BUCK step-down module are electrically connected to the output port. Both the controlled switch circuit and the BUCK step-down module are controlled by the control unit.

8. The integrated controller LED constant current power supply of claim 2, wherein, The parameter setting circuit includes at least one of a DIP switch and an NFC module.

9. The integrated controller LED constant current power supply of claim 3, wherein, The PUSH dimming circuit includes a resistor, a diode, and an optocoupler. The positive terminal of the input of the optocoupler is electrically connected to the negative terminal of the diode D6 through a resistor R40. The positive terminal of the diode D6 is electrically connected to the L terminal of the PUSH button through a resistor R38. The negative terminal of the input of the optocoupler is electrically connected to the N terminal of the PUSH button. The negative terminal of the input of the optocoupler is also electrically connected to the positive terminal of the diode D7. The negative terminal of the diode D7 is electrically connected to the positive terminal of the input of the optocoupler. The output of the optocoupler is electrically connected to the control unit.

10. A dimming system, characterized in that, The device includes a PUSH button, a luminaire load, and an LED constant current power supply with an integrated controller according to claim 3 or 9. The input port of the LED constant current power supply is connected to the mains power, the output port of the LED constant current power supply is electrically connected to the luminaire load, and the PUSH button is electrically connected to the input terminal of the PUSH dimming circuit of the LED constant current power supply.

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