Dimmer-type power supply

Abstract

To provide a dimmer-type dimming power supply.SOLUTION: A dimmer style power supply comprises: a housing; a control board disposed within the housing; and multiple operation terminals disposed on the housing. The control board is equipped with an electromagnetic compatibility module, a switching supply power module, a main control module, an output adjustment module, and a dimming control module thereon. By integrating a dimmer with the dimming power supply, the present invention not only reduces wiring, but also features convenient installation, compact structure, and small size, which can greatly reduce costs, with functions of dimming and color adjustment. In addition, the present invention can also be configured to meet requirements of the U.S. CLASS2 standard.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the field of LED power supplies, and in particular to dimmable power supplies. [Background technology]

[0002] As people's living standards improve, the demand for lighting continues to rise, making it necessary to adjust lighting in some life situations. In conventional technologies, lighting adjustment methods generally involve sending a dimming command to a dimming power supply via a dimmer or dimming system, which then adjusts and changes its output after receiving the dimming signal, thereby changing the brightness, color temperature, or color of the lighting. This dimming method not only requires cumbersome wiring, but also requires a dimmer or dimming system and a dimming power supply suitable for the dimming method. For example, if the dimmer is a 0-10V dimmer, the suitable dimming power supply must be a 0-10V dimming power supply. If the dimming system is a phase-cut dimming system, the suitable dimming power supply must be a phase-cut dimming power supply. This results in relatively high costs for the dimmer and dimming power supply, and a relatively complicated control method. Therefore, a dimmable dimming power supply is urgently needed to solve the above problems. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a dimmable power supply. [Means for solving the problem]

[0004] In order to solve the technical problem, one embodiment of the present invention adopts a technical solution as follows: a dimmable dimming power supply, comprising: a housing; a control board disposed in the housing; and a plurality of operating terminals disposed on the housing; and the control board is provided with an electromagnetic compatibility module, a switching power supply module, a main control module, an output adjustment module, and a dimming control module; The input end of the electromagnetically compatible module is connected to an AC power source; The switching power supply module is connected to the module with electromagnetic compatibility, The output regulation module is connected to the switching power supply module and to the lighting fixture; The main control module is connected to the switching power supply module and the output regulation module, respectively; The dimming control module is connected to the main control module and a plurality of control terminals respectively, and is used to generate a dimming command signal; The main control module controls the brightness, color temperature and / or color of the lighting fixture by outputting a PWM control signal to the output adjustment module according to the dimming command signal generated by the dimming control module.

[0005] As one preferred embodiment of the present invention, a switching power supply module includes a power factor correction module and a power conversion module, The power factor correction module has its input end connected to an electromagnetically compatible module and is used to improve the power factor and reduce current harmonics; The power conversion module has its input terminal connected to the output terminal of the power factor correction module, and its output terminals connected to the main control module and the output adjustment module, respectively, and is used to convert power and supply power to the main control module, the output adjustment module, and the lighting fixtures.

[0006] In one preferred embodiment of the present invention, the output adjustment module includes a MOS transistor and a driving module, the source of the MOS transistor is connected to the switching power supply module, the drain of the MOS transistor is connected to the output terminal, the driving module is connected to the main control module and the gate of the MOS transistor respectively, and a lighting device is connected to the output terminal for adjusting the brightness of the lighting device.

[0007] As a preferred embodiment of the present invention, there is provided a dimmer-type dimming power supply, which further includes a detection module and an overcurrent protection module, one end of the detection module being connected to the switching power supply module, the other end of the detection module being connected to the input end of the overcurrent protection module and the source of the MOS transistor, respectively, and the output end of the overcurrent protection module being connected to the driving module.

[0008] As a preferred embodiment of the present invention, the dimmer-type dimming power supply further includes a detection module, one end of which is connected to the switching power supply module, and the driving module is connected to the main control module and the other end of the detection module, respectively, and the main control module can control the conduction / non-conduction of the MOS transistor via the driving module based on the signal fed back from the detection module.

[0009] In one preferred embodiment of the present invention, the output regulation module comprises at least two MOS transistors and at least two driving modules; The source of the MOS transistor is connected to the switching power supply module, the drain of the MOS transistor is connected to the output terminal, and the drive module is connected to the main control module and the gate of the MOS transistor, respectively, thereby forming at least two systems of output adjustment circuits; A lighting fixture is connected to the output terminals to adjust the brightness, color temperature and / or color of the lighting fixture.

[0010] As one preferred embodiment of the present invention, there is provided a dimmer-type dimming power supply, which further comprises at least two detection modules and at least two overcurrent protection modules, one end of the detection module being connected to the switching power supply module, the other end of the detection module being connected to the input end of the overcurrent protection module and the source of the MOS transistor, respectively, and the output end of the overcurrent protection module being connected to the driving module, thereby limiting the output power and output current of the output adjustment circuit of each system.

[0011] In one preferred embodiment of the present invention, the dimming control module includes a potentiometer dimming circuit or an encoder dimming circuit to adjust the brightness of the lighting fixture.

[0012] In one preferred embodiment of the present invention, the dimming control module comprises at least two potentiometer dimming circuits or at least two encoder dimming circuits for adjusting the brightness, color temperature and / or color of the lighting fixture.

[0013] In one preferred embodiment of the present invention, the dimming control module is configured as a touch dimming circuit or a wireless signal dimming circuit to adjust the brightness, color temperature and / or color of the lighting fixture. [Effects of the Invention]

[0014] a dimming control module connected to the output adjustment module; a main control module connected to the output adjustment module; a PWM control signal output from the output adjustment module; a PWM signal output from the output adjustment module; and a dimming control module connected to the output adjustment module; an input terminal of the dimming control module connected to an AC power source; an input terminal of the dimming control module connected to the output adjustment module; a main control module connected to the switching power supply module; and a dimming control module connected to the main control module and the output adjustment module; a dimming command signal output from the main control module; a PWM control signal output from the output adjustment module; a PWM control signal output from the output adjustment module; a PWM control signal output from the output adjustment module; By integrating the dimmer and dimming power supply, not only can the amount of wiring be reduced, but it also has the advantages of being easy to install, compact, and small, significantly reducing costs, and it also has dimming and color adjustment functions, and can be configured as a power supply that meets the requirements of the US CLASS2 standard even under high power and current conditions.

[0015] The above and / or additional aspects and advantages of the present invention will become more apparent from and will be better understood by reference to the following detailed description of the preferred embodiments, taken in conjunction with the accompanying drawings, in which: FIG. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram of a dimmer-type dimming power supply. [Figure 2] FIG. 1 is a principle block diagram of a first embodiment of a dimming type dimming power supply. [Figure 3] FIG. 10 is a principle block diagram of a second embodiment of a dimming power supply; [Figure 4] FIG. 10 is a principle block diagram of a third embodiment of a dimming power supply of a dimmer type. [Figure 5] FIG. 10 is a principle block diagram of a fourth embodiment of a dimming type dimming power supply. [Figure 6] FIG. 10 is a principle block diagram of a fifth embodiment of a dimming type dimming power supply. [Figure 7] FIG. 10 is a principle block diagram of a sixth embodiment of a dimming type dimming power supply. [Figure 8] FIG. 10 is a principle block diagram of a seventh embodiment of a dimming type dimming power supply. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, specific embodiments of the present invention will be described in detail, and preferred embodiments of the present invention are shown in the accompanying drawings, which serve to illustrate and supplement the description in the main text of the specification, so that people can intuitively and clearly understand each technical feature and overall technical solution of the present invention, but do not limit the protection scope of the present invention.

[0018] In describing the present invention, plural means two or more, and greater than, less than, more than, etc. are understood to be exclusive, and greater than or equal to, less than, within, etc. are understood to be inclusive. The terms "first", "second", etc. are used merely to distinguish technical features and should not be understood to indicate or suggest relative importance or to implicitly specify the number or sequential relationship of the technical features indicated.

[0019] In addition, in the description of the present invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," and "right" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate easy explanation of the present invention. They do not indicate or suggest that the devices or components shown necessarily have a specific orientation, or are configured and operated in a specific orientation, and therefore are not limitations on the present invention.

[0020] Unless otherwise expressly limited, the terms "provided," "attached," and "connected" used in the present invention should be interpreted broadly, and may refer to, for example, a direct connection or an indirect connection via an intermediate element, a solid connection, a detachable connection, or an integral molding, a mechanical connection, an internal communication between two elements, or an interactive relationship between two elements. A person skilled in the art can reasonably determine the specific meaning of the above terms in the present invention based on the specific content of the technical means.

[0021] 1 to 8, the present invention is an optical dimming power supply including a housing 90, a control board provided in the housing 90, and a plurality of operation terminals 91 provided on the housing 90, and the control board is provided with an electromagnetic compatibility module 10, a switching power supply module 20, a main control module 30, an output adjustment module 40, and a dimming control module 50, The input terminal of the electromagnetic compatibility module 10 is connected to an AC power source; The switching power supply module 20 is connected to the electromagnetic compatibility module 10; The output adjustment module 40 is connected to the switching power supply module 20 and to the lighting fixture; The main control module 30 is connected to the switching power supply module 20 and the output adjustment module 40, The dimming control module 50 is connected to the main control module 30 and a plurality of operation terminals 91, respectively, and is used to generate a dimming command signal; The main control module 30 controls the brightness, color temperature and / or color of the lighting fixture by outputting a PWM control signal to the output adjustment module 40 according to the dimming command signal generated by the dimming control module 50.

[0022] 1 and 2, the dimmable power supply of the present invention has a dimmer-shaped exterior, with a dimming control board on top and, in some exemplary embodiments, a switch 92 for controlling the input of the dimmable power supply and the conduction / non-conduction of AC power. The dimmable power supply includes an electromagnetic compatibility module 10, a switching power supply module 20, a main control module 30, an output regulation module 40, and a dimming control module 50. The switching power supply module 20 is used for power conversion. The dimming control module 50 generates a dimming command signal when the control terminal 91 is operated. The main control module 30 outputs a PWM control signal to the output regulation module 40 according to the dimming command signal generated by the dimming control module 50, thereby controlling the brightness, color temperature, and / or color of the lighting fixture. Furthermore, because the internal space of the dimmable power supply is relatively small, the method of joining multiple circuit boards can maximize space utilization, increasing power density while reducing volume. By integrating a dimmer and a dimming power supply, the present invention not only reduces wiring, but also has the advantages of being easy to install, compact, and small, significantly reducing costs, and also has the advantages of being equipped with dimming and color adjustment functions, and being able to be configured as a power supply that meets the requirements of the US CLASS2 standard even under high power and large current conditions.

[0023] Referring to FIG. 3, in a preferred embodiment of the switching power supply module 20, the switching power supply module 20 includes a power factor correction module 21 and a power conversion module 22. The power factor correction module 21 has its input terminal connected to the electromagnetic compatibility module 10 and is used to improve the power factor and reduce current harmonics; The power conversion module 22 has its input terminal connected to the output terminal of the power factor correction module 21, and its output terminals connected to the main control module 30 and the output adjustment module 40, respectively, and is used for power conversion and supplying power to the main control module 30, the output adjustment module 40, and the lighting fixtures.

[0024] 4, in a first embodiment of the output regulation module 40, the output regulation module 40 includes a MOS transistor and a driving module 60, the source of the MOS transistor being connected to the switching power supply module 20 and the drain of the MOS transistor being connected to the output terminal, the driving module 60 being connected to the main control module 30 and the gate of the MOS transistor, respectively, and a lighting device being connected to the output terminal for adjusting the brightness of the lighting device. The output mode of the main control module 30 is PWM mode, and the PWM control signal output by the main control module 30 is amplified by the driving module 60 to drive the MOS transistor Q1, and the duty cycle of the PWM control signal determines the PWM duty cycle output by the output regulation module 40, which directly affects the brightness of the lighting device. Of course, this does not exclude the possibility of changing the brightness of the lighting device by adjusting the voltage or current in some applications.

[0025] 4, a first embodiment of overcurrent and short circuit protection is a dimmable light power supply, further comprising a detection module 70 and an overcurrent protection module 80, one end of the detection module 70 is connected to the switching power supply module 20, the other end of the detection module 70 is connected to the input end of the overcurrent protection module 80 and the source of the MOS transistor Q1, and the output end of the overcurrent protection module 80 is connected to the driving module 60. The detection module 70 comprises a resistor R1, and the realization of the overcurrent and short circuit protection function relies on a separate overcurrent protection module 80, specifically, the overcurrent protection module 80 detects the voltage drop generated by the current flowing through the resistor R1 to determine whether an overcurrent or short circuit occurs. When the voltage drop across the resistor R1 reaches the trigger voltage threshold of the overcurrent protection, the overcurrent protection module 80 sends an output-off signal to the driving module 60, turning off the MOS transistor Q1, thereby realizing overcurrent and short circuit protection.

[0026] Referring to FIG. 6 , a second embodiment of overcurrent and short-circuit protection is a dimmable power supply, further comprising a detection module 70, one end of which is connected to the switching power supply module 20, and a drive module 60, which is connected to the main control module 30 and the other end of which is connected to the detection module 70. The main control module 30 controls the conduction or non-conduction of the MOS transistor via the drive module 60 based on a signal fed back from the detection module 70. The detection module 70 comprises a resistor R1. The overcurrent and short-circuit protection function is realized by a microcontroller U1 in the main control module 30 detecting a voltage drop caused by the current flowing across the resistor R1 to determine whether an overcurrent or short circuit occurs, and then realizing the overcurrent and short-circuit protection through program control. Specifically, when the microcontroller U1 in the main control module 30 detects that the voltage drop caused by the current flowing across the resistor R1 reaches the trigger voltage threshold for overcurrent protection, the main control module 30 stops outputting a signal to the output regulation module 40, thereby realizing overcurrent and short-circuit protection.

[0027] Referring to FIG. 5, as a second embodiment of the output adjustment module 40, the output adjustment module 40 includes at least two MOS transistors and at least two driving modules 60: The source of the MOS transistor is connected to the switching power supply module 20, the drain of the MOS transistor is connected to the output terminal, and the driving module 60 is connected to the main control module 30 and the gate of the MOS transistor, respectively, thereby forming at least two systems of output adjustment circuits 61; Lighting fixtures are connected to the output terminals to adjust the brightness, color temperature, and / or color of the lighting fixtures. Specifically, if the dimmable power supply has a color temperature and color adjustment function, the output adjustment module 40 has at least two output adjustment circuits 61, i.e., at least two MOS transistors and at least two driving modules 60, which output through a first output terminal and a second output terminal, respectively, to connect to lighting fixtures with different color temperatures. A dimming command is sent via the dimming control module 50 to the main control module 30, and the main control module 30 sends a corresponding PWM control signal to the driving modules 60 in each output adjustment circuit 61 in the output adjustment module 40 to control the output PWM duty cycle of the MOS transistors in each output adjustment circuit 61, thereby achieving adjustment of the brightness, color temperature, or color.

[0028] Referring to FIG. 7 , another embodiment of the present invention is a dimmable lighting power supply, further comprising at least two detection modules 70 and at least two overcurrent protection modules 80, one end of the detection module 70 connected to the switching power supply module 20, the other end connected to the input end of the overcurrent protection module 80 and the source of the MOS transistor, respectively, and the output end of the overcurrent protection module 80 connected to the driving module 60, thereby limiting the output power and output current of the output regulation circuit 61 of each system. In some exemplary embodiments, the output must meet the requirements of the US CLASS 2 standard, i.e., if the total output power exceeds 100 W or the total output current exceeds 5 A, multiple outputs must be used, and the output of each system must be limited to 100 W or less or the current must be limited to 5 A. Therefore, the output regulation module 40 may comprise multiple MOS transistors, driving modules 60, overcurrent detection resistors, and overcurrent protection modules 80, for limiting the power of each system to 100 W or less and the output current of each system to 5 A or less.

[0029] Referring to FIG. 1, as a first embodiment of a dimming control module 50, the dimming control module 50 includes a potentiometer dimming circuit 51 or an encoder dimming circuit to adjust the brightness of a lighting fixture, and the operating element 91 is a potentiometer.

[0030] 1 and 8, as a second embodiment of the dimming control module 50, the dimming control module 50 includes two potentiometer dimmer circuits 51, the operating end 91 on the left side of the housing 90 is a potentiometer RP1, and the operating end 91 on the right side of the housing 90 is a potentiometer RP2, the input end of the potentiometer RP1 and the input end of the potentiometer RP2 are connected to the VCC end, the output end of the potentiometer RP1 and the output end of the potentiometer RP2 are grounded, and the adjustment end of the potentiometer RP1 and the adjustment end of the potentiometer RP2 are connected to the main control module 30, the potentiometer RP1 is used to adjust the brightness of the lighting fixture, and the potentiometer RP2 is used to adjust the color temperature or color of the lighting fixture.

[0031] As a third embodiment of the dimming control module 50, the dimming control module 50 is configured as a touch dimming circuit or a wireless signal dimming circuit to adjust the brightness, color temperature and / or color of the lighting fixture.

[0032] Of course, the present invention is not limited to the above embodiments, and a person skilled in the art may make modifications or substitutions within an equivalent range without departing from the spirit of the present invention, and such modifications or substitutions within an equivalent range are included in the scope defined by the claims of this application.

Claims

1. A dimmable dimming power supply, comprising: a housing (90); a control board provided in the housing (90); and a plurality of operating terminals (91) provided on the housing (90), wherein an electromagnetic compatibility module (10), a switching power supply module (20), a main control module (30), an output adjustment module (40), and a dimming control module (50) are provided on the control board; The input terminal of the electromagnetic compatibility module (10) is connected to an AC power source; The switching power supply module (20) is connected to the electromagnetic compatibility module (10); The output adjustment module (40) is connected to the switching power supply module (20) and to a lighting fixture; The main control module (30) is connected to the switching power supply module (20) and the output adjustment module (40), respectively; The dimming control module (50) is connected to the main control module (30) and the plurality of operation terminals (91) respectively, and is used to generate a dimming command signal; The main control module (30) controls the brightness, color temperature and / or color of the lighting fixture by outputting a PWM control signal to the output adjustment module (40) according to the dimming command signal generated by the dimming control module (50). A dimmer type dimming power supply characterized by:

2. The switching power supply module (20) includes a power factor correction module (21) and a power conversion module (22), The power factor correction module (21) has an input terminal connected to the electromagnetic compatibility module (10) and is used to improve the power factor and reduce current harmonics; The power conversion module (22) has an input terminal connected to the output terminal of the power factor correction module (21), and an output terminal connected to the main control module (30) and the output adjustment module (40), respectively, and is used for power conversion and power supply to the main control module (30), the output adjustment module (40), and the lighting fixtures.

2. The dimmable power supply of claim 1.

3. The output adjustment module (40) comprises a MOS transistor and a driving module (60), the source of the MOS transistor is connected to the switching power supply module (20), the drain of the MOS transistor is connected to an output terminal, the driving module (60) is connected to the main control module (30) and the gate of the MOS transistor respectively, and the lighting device is connected to the output terminal to adjust the brightness of the lighting device.

2. The dimmable power supply of claim 1.

4. The power supply module further includes a detection module (70) and an overcurrent protection module (80), one end of the detection module (70) is connected to the switching power supply module (20), the other end of the detection module (70) is connected to the input end of the overcurrent protection module (80) and the source of the MOS transistor, respectively, and the output end of the overcurrent protection module (80) is connected to the driving module (60).

4. The dimmable power supply of claim 3.

5. The power supply module (20) further includes a detection module (70), one end of which is connected to the switching power supply module (20), and the driving module (60) is connected to the main control module (30) and the other end of which is connected to the detection module (70), respectively, and the main control module (30) can control the conduction / non-conduction of the MOS transistor via the driving module (60) based on a signal fed back from the detection module (70).

4. The dimmable power supply of claim 3.

6. The output regulation module (40) comprises at least two of the MOS transistors and at least two of the drive modules (60); The source of the MOS transistor is connected to the switching power supply module (20), the drain of the MOS transistor is connected to an output terminal, and the drive module (60) is connected to the main control module (30) and the gate of the MOS transistor, respectively, thereby configuring at least two systems of output adjustment circuits (61); The lighting fixture is connected to an output terminal for adjusting the brightness, color temperature and / or color of the lighting fixture.

2. The dimmable power supply of claim 1.

7. The power supply circuit further includes at least two detection modules (70) and at least two overcurrent protection modules (80), one end of the detection module (70) being connected to the switching power supply module (20), the other end of the detection module (70) being connected to the input end of the overcurrent protection module (80) and the source of the MOS transistor, respectively, and the output end of the overcurrent protection module (80) being connected to the driving module (60), thereby limiting the output power and output current of the output adjustment circuit (61) of each system.

7. The dimmable power supply of claim 6.

8. The dimming control module (50) includes a potentiometer dimming circuit (51) or an encoder dimming circuit to adjust the brightness of the lighting fixture.

2. The dimmable power supply of claim 1.

9. The dimming control module (50) comprises at least two of the potentiometer dimming circuits (51) or at least two of the encoder dimming circuits to adjust the brightness, color temperature and / or color of the lighting fixture.

2. The dimmable power supply of claim 1.

10. The dimming control module (50) is configured as a touch dimming circuit or a wireless signal dimming circuit to adjust the brightness, color temperature and / or color of the lighting fixture.

2. The dimmable power supply of claim 1.

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