Light-emitting diode (LED) light mixing and changing integrated control device
By designing an integrated LED hybrid light-changing control device, the problem that multiple LED lights cannot work simultaneously in the prior art is solved, independent control and simultaneous work of multiple LED lights are realized, and the reliability of the system is improved.
Patent Information
- Application Number
- CN202421913425.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The existing multi-channel LED lights are connected in series, which causes the LED lights on other channels to fail to work normally and cannot light up at the same time when the LED lights are abnormal.
A LED mixed light-changing integrated control device is designed, including a rectifying filtering module, a power factor correction and boosting module, a constant current and sampling module and a shunt control module. Through the coordinated work of these modules, the simultaneous operation and independent control of multiple LED lamps are realized.
The simultaneous operation of multiple LED lights is achieved, avoiding the problem of abnormal single LED lights affecting other street lights, and the reliability of the system is improved through independent LED current control terminals.
Smart Images
Figure CN223024616U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optoelectronic lighting, in particular to an LED mixing and dimming integrated control device. Background Art
[0002] A light emitting diode (LED) is a semiconductor component, which is mostly used as an indicator light, a light emitting diode board, etc. With the emergence of white light LEDs, LEDs are also used for lighting. As a new generation of green light source, compared with traditional light sources such as incandescent lamps, fluorescent lamps and high-intensity discharge lamps, LEDs have many advantages such as energy saving, environmental protection, short response time, long life, small volume and good shock resistance, so they are favored by people and become a research hotspot in the field of semiconductor lighting in various countries.
[0003] However, the existing multi-channel LED lights adopt a series connection method. Once an LED light in one channel fails, the other group of LED lights cannot work properly, or in the case of multiple channels of LED lights, only one channel of LED lights can work properly at a time and cannot be lit simultaneously. Content of the Utility Model
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an LED mixing and dimming integrated control device, which can enable multiple channels of LED lights to work simultaneously without affecting each other.
[0005] The LED mixing and dimming integrated control device according to the embodiment of the utility model is applied to at least two groups of LED lamp groups, and includes:
[0006] A rectifying and filtering module, the input end of which is used for electrically connecting with an AC power supply;
[0007] A power factor correction and boosting module, the input end of which is electrically connected with the output end of the rectifying and filtering module. The power factor correction and boosting module can adjust the power factor and voltage of the rectifying and filtering module. The output end of the power factor correction and boosting module is electrically connected with the positive extreme ends of at least two groups of the LED lamp groups. The control signal end of the power factor correction and boosting module can output corresponding pulse signals according to the voltage change of the power factor correction and boosting module;
[0008] A constant current and sampling module, the first connection end of the constant current and sampling module is electrically connected with the output end of the power factor correction and boosting module, and the sampled end of the constant current and sampling module is electrically connected with the feedback end of the power factor correction and boosting module;
[0009] A shunt control module, the input end of the shunt control module is electrically connected to the output end of the power factor correction and boost module, the control end of the shunt control module is electrically connected to the control signal end of the power factor correction and boost module, the grounding end of the shunt control module is electrically connected to the second connection end of the constant current and sampling module, the shunt control module has at least two LED current control ends, and each of the LED current control ends is respectively electrically connected to the negative electrode end of the corresponding LED lamp group. The shunt control module can adjust the color temperature of the corresponding LED lamp group according to the change of the pulse signal.
[0010] According to some embodiments of the present invention, the rectifier and filter module includes:
[0011] A filtering unit, the input end of the filtering unit is electrically connected to the AC power supply;
[0012] A rectifier bridge unit, the input end of the rectifier bridge unit is electrically connected to the output end of the filtering unit.
[0013] According to some embodiments of the present invention, the rectifier and filter module further includes a fuse FU, and the fuse FU is electrically connected between the filtering unit and the AC power supply.
[0014] According to some embodiments of the present invention, the power factor correction and boost module includes:
[0015] A switching transistor Q1, the drain of the switching transistor Q1 is electrically connected to the output end of the rectifier and filter module through an inductor L3, the drain of the switching transistor Q1 is also electrically connected to the input end of the shunt control module through a diode D1, the source of the switching transistor Q1 is grounded through a resistor R4, and the drain of the switching transistor Q1 is also electrically connected to the control end of the shunt control module;
[0016] A chip U1, the current sampling end of the chip U1 is electrically connected to the source of the switching transistor Q1, the gate driving end of the chip U1 is electrically connected to the gate of the switching transistor Q1, and the high-voltage start-up and power supply end of the chip U1 is electrically connected to the output end of the rectifier and filter module through a resistor R6;
[0017] A storage capacitor CD3, the positive electrode of the storage capacitor CD3 is electrically connected to the negative electrode end of the diode D1, the negative electrode of the storage capacitor CD3 is grounded, and a resistor R9 is also connected in parallel across both ends of the storage capacitor CD3;
[0018] A feedback unit, the sampling end of the feedback unit is electrically connected to the sampled end of the constant current and sampling module, and the output end of the feedback unit is electrically connected to the feedback end of the chip U1.
[0019] According to some embodiments of the present utility model, the feedback unit includes:
[0020] A zener diode DW1, the positive terminal of the zener diode DW1 is electrically connected to the feedback terminal of the chip U1 through a resistor R10, and the negative terminal of the zener diode DW1 is grounded through a capacitor;
[0021] A diode D3, the negative terminal of the diode D3 is electrically connected to the negative terminal of the zener diode DW1, and the positive terminal of the diode D3 serves as the sampling terminal of the feedback unit.
[0022] According to some embodiments of the present utility model, the constant current and sampling module includes:
[0023] A switching transistor Q2, the drain of the switching transistor Q2 is sequentially electrically connected to the output terminal of the power factor correction and boost module through a resistor R12 and a resistor R11, and the source of the switching transistor Q2 is grounded;
[0024] A zener diode DW2, the positive terminal of the zener diode DW2 is commonly grounded with the source of the switching transistor Q2, and the negative terminal of the zener diode DW2 is connected to the connection node between the resistor R12 and the resistor R11;
[0025] A switching transistor Q3, the gate of the switching transistor Q3 is electrically connected to the drain of the switching transistor Q2, the source of the switching transistor Q3 is electrically connected to the gate of the switching transistor Q2 through a resistor R13, the source of the switching transistor Q3 is also grounded through a resistor R14, the drain of the switching transistor Q3 is electrically connected to the ground terminal of the shunt control module, the drain of the switching transistor Q3 is also grounded through a resistor R15, a temperature resistor NTC, and a resistor R16 in sequence, and the source of the switching transistor Q3 is also electrically connected to the node between the resistor R15 and the temperature resistor NTC;
[0026] A sampling unit, the input terminal of the sampling unit is electrically connected to the drain of the switching transistor Q3, and the sampled terminal of the sampling unit is electrically connected to the feedback terminal of the power factor correction and boost module.
[0027] According to some embodiments of the present utility model, the sampling unit includes a resistor R17 and a resistor R18, one end of the resistor R17 is electrically connected to the drain of the switching transistor Q3, the other end of the resistor R17 is grounded through the resistor R18, and the node between the resistor R17 and the resistor R18 serves as the sampled terminal of the constant current and sampling module.
[0028] According to some embodiments of the present utility model, the shunt control module includes:
[0029] Chip U2, the power supply terminal of the chip U2 is electrically connected to the output terminal of the power factor correction and boost module through a resistor R25, the clock terminal of the chip U2 is electrically connected to the control signal terminal of the power factor correction and boost module through a resistor R24, and the chip U2 has at least two output terminals;
[0030] A shunt unit having at least two output terminals, each output terminal of the shunt unit is electrically connected to the corresponding output terminal of the chip U2 and serves as one of the LED current control terminals, and the ground terminal of the shunt unit is electrically connected to the ground terminal of the chip U2.
[0031] According to some embodiments of the present invention, the shunt unit includes at least two shunt resistors, one end of each shunt resistor is electrically connected to the corresponding output terminal of the chip U2, and the other end of each shunt resistor is electrically connected to the ground terminal of the chip U2.
[0032] The embodiments of the present invention have at least the following beneficial effects: The rectification and filtering module can convert the AC power supply into DC power and can effectively suppress electromagnetic interference; the power factor correction and boost module can adjust the power of the power supply to improve the efficiency of the power supply and boost the voltage; the constant current and sampling module can effectively remove the ripple, and can keep the total current of all LED lamp groups unchanged, and can timely feedback the real-time voltage of the LED lamp group to the power factor correction and boost module, so that the power factor correction and boost module can adjust the voltage in real time to keep the voltage of the working LED lamp group stable; the power factor correction and boost module can output corresponding pulse signals according to the voltage frequency change at the output terminal, and then control the signals of at least two LED current control terminals of the shunt control module to change accordingly, so as to adjust the color temperature of the corresponding LED lamp group; in addition, since the LED current control terminals of the shunt control module are independent of each other, even if any group of LED lamp groups has an abnormality, it will not affect other LED lamp groups, effectively improving the reliability.
[0033] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings
[0034] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:
[0035] Figure 1 is a schematic circuit diagram of the LED mixed light and variable light integrated control device according to the embodiment of the present invention;
[0036] Figure 2 isFigure 1 Schematic circuit diagram of the rectification and filtering module and the power factor correction and boost module of the shown integrated LED mixing and dimming control device;
[0037] Figure 3 For Figure 1 Schematic circuit diagram of the constant current and sampling module and the shunt control module of the shown integrated LED mixing and dimming control device.
[0038] Reference numerals:
[0039] Label Name Label Name 100 Rectifying and Filtering Module 300 Constant Current and Sampling Module 110 Filtering Unit 310 Sampling Unit 120 Rectifier Bridge Unit 400 Shunt Control Module 200 Power Factor Correction and Boost Module 410 Shunt Unit 210 Feedback Unit Detailed implementation manners
[0040] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and the drawings, so as to fully understand the purpose, solution and effects of the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.
[0041] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, top, bottom, etc. used in the present utility model are only relative to the mutual positional relationship of the components of the present utility model in the drawings.
[0042] It should be noted that, unless otherwise specified, when a certain feature is referred to as "electrically connected" or "electrically connected" to another feature, the two features can be directly connected through pins, or connected through wires, or can be connected through wireless transmission. The specific electrical connection method belongs to the general method of those skilled in the art, and those skilled in the art can achieve the connection according to needs.
[0043] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present application. The terms used in the description of the present specification are only for describing specific embodiments, and are not intended to limit the present utility model. The term "and / or" used herein includes any combination of one or more of the related listed items.
[0044] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.
[0045] Refer toFigure 1 According to the LED mixed light and variable light integrated control device of the embodiment of the present invention, it is applied to at least two groups of LED lamp groups, and includes a rectification and filtering module 100, a power factor correction and boost module 200, and a shunt control module 400; the input end of the rectification and filtering module 100 is used to be electrically connected to an AC power supply; the input end of the power factor correction and boost module 200 is electrically connected to the output end of the rectification and filtering module 100, the power factor correction and boost module 200 can adjust the power factor and voltage of the rectification and filtering module 100, the output end of the power factor correction and boost module 200 is electrically connected to the positive extreme ends of at least two groups of the LED lamp groups, and the control signal end of the power factor correction and boost module 200 can output corresponding pulse signals according to the voltage change of the power factor correction and boost module 200; the first connection end of the constant current and sampling module 300 is electrically connected to the output end of the power factor correction and boost module 200, and the sampled end of the constant current and sampling module 300 is electrically connected to the feedback end of the power factor correction and boost module 200; the input end of the shunt control module 400 is electrically connected to the output end of the power factor correction and boost module 200, the control end of the shunt control module 400 is electrically connected to the control signal end of the power factor correction and boost module 200, the grounding end of the shunt control module 400 is electrically connected to the second connection end of the constant current and sampling module 300, the shunt control module 400 has at least two LED current control ends, and each of the LED current control ends is respectively electrically connected to the negative extreme end of the corresponding LED lamp group, and the shunt control module 400 can adjust the color temperature of the corresponding LED lamp group according to the change of the pulse signal.
[0046] Working principle:
[0047] The rectification and filtering module 100 can convert the AC power supply into DC power and can effectively suppress electromagnetic interference; the power factor correction and boost module 200 can adjust the power of the power supply to improve the efficiency of the power supply and boost the voltage; the constant current and sampling module 300 can effectively remove the ripple, and can keep the total current of all LED lamp groups unchanged, and can timely feedback the real-time voltage of the LED lamp groups to the power factor correction and boost module 200, so that the power factor correction and boost module 200 can adjust the voltage in real time to keep the voltage of the working LED lamp groups stable; the power factor correction and boost module 200 can output corresponding pulse signals according to the voltage frequency change at the output end, and then control the signals of at least two LED current control ends of the shunt control module 400 to change accordingly, so as to adjust the color temperature of the corresponding LED lamp groups; in addition, since the LED current control ends of the shunt control module 400 are independent of each other, even if any group of LED lamp groups has an abnormality, it will not affect other LED lamp groups, effectively improving the reliability.
[0048] Referring Figure 2 , in some embodiments of the present invention, the rectification and filtering module 100 includes:
[0049] A filtering unit 110, the input end of the filtering unit 110 is electrically connected to the AC power supply;
[0050] A rectifier bridge unit 120, the input end of the rectifier bridge unit 120 is electrically connected to the output end of the filtering unit 110.
[0051] Among them, in some embodiments of the present invention, the filtering unit 110 adopts an EMC circuit, which can improve the anti-interference ability to electromagnetic interference, helps to ensure that the remaining modules can remain stable in various electromagnetic environments, and can effectively improve the stability and reliability of the circuit. The rectifier bridge unit 120 adopts a conventional rectifier bridge structure, which can convert alternating current into direct current and provide a stable DC voltage for the subsequent circuit.
[0052] Referring Figure 2 , in some embodiments of the present invention, the rectification and filtering module 100 further includes a fuse FU, and the fuse FU is electrically connected between the filtering unit 110 and the AC power supply.
[0053] Adding the fuse FU can achieve the following functions including but not limited to:
[0054] Overload protection: when the current in the circuit exceeds the rated current of the fuse FU, the metal wire or metal sheet in the fuse FU will melt due to overheating, thus cutting off the circuit;
[0055] Short-circuit protection: When a short circuit occurs in the circuit, a very large current will be generated. The fuse FU can respond quickly and blow, preventing the circuit and equipment from being damaged due to overcurrent;
[0056] Isolate the power supply: When repairing or replacing some components in the circuit, the fuse FU can act as an isolation device to ensure that no current passes through in the off state, guaranteeing safety;
[0057] Prevent fires: By cutting off the overload or short-circuit current in time, the fuse FU can prevent fires caused by electrical faults.
[0058] Refer to Figure 2 , in some embodiments of the present invention, the power factor correction and boost module 200 includes:
[0059] A switching transistor Q1, the drain of the switching transistor Q1 is electrically connected to the output end of the rectification and filtering module 100 through an inductor L3, the drain of the switching transistor Q1 is also electrically connected to the input end of the shunt control module 400 through a diode D1, the source of the switching transistor Q1 is grounded through a resistor R4, and the drain of the switching transistor Q1 is also electrically connected to the control end of the shunt control module 400;
[0060] A chip U1, the current sampling end of the chip U1 is electrically connected to the source of the switching transistor Q1, the gate driving end of the chip U1 is electrically connected to the gate of the switching transistor Q1, and the high-voltage start-up and power supply end of the chip U1 is electrically connected to the output end of the rectification and filtering module 100 through a resistor R6;
[0061] A storage capacitor CD3, the positive pole of the storage capacitor CD3 is electrically connected to the negative extreme of the diode D1, the negative pole of the storage capacitor CD3 is grounded, and a resistor R9 is also connected in parallel across both ends of the storage capacitor CD3;
[0062] A feedback unit 210, the sampling end of the feedback unit 210 is electrically connected to the sampled end of the constant current and sampling module 300, and the output end of the feedback unit 210 is electrically connected to the feedback end of the chip U1.
[0063] Refer to Figure 2 , in some embodiments of the present invention, the feedback unit 210 includes:
[0064] A zener diode DW1, the positive extreme of the zener diode DW1 is electrically connected to the feedback end of the chip U1 through a resistor R10, and the negative extreme of the zener diode DW1 is grounded through a capacitor;
[0065] Diode D3, the negative terminal of the diode D3 is electrically connected to the negative terminal of the voltage regulating diode DW1, and the positive terminal of the diode D3 serves as the sampling terminal of the feedback unit 210.
[0066] In addition, the power factor correction and boost module 200 further includes, for example Figure 2 the relevant circuit structures in, to ensure that the power factor correction and boost module 200 can work stably. Among them, the chip U1 is a power factor correction chip, which can improve the power factor of the power supply and improve the energy efficiency. By controlling the on and off of the switching transistor Q1, it can realize the charging and discharging of the inductor L3, and at the same time can increase the voltage and charge the energy storage capacitor CD3 to achieve power factor correction and boost, and make the voltage output in a constant voltage manner, improving the reliability; using the square wave voltage pulse on the switching transistor Q1 of the power factor correction and boost module 200 as the trigger pulse, it can synchronously change according to the voltage change at the output end of the power factor correction and boost module 200, and then synchronously control the shunt control module 400, that is, by controlling the change of the control signal of the control end of the shunt control module 400, to adjust the change of the output signals of at least two LED current control ends, so as to realize the adjustment of the color temperature of the LED lamp group. In addition, by using the feedback unit 210, the voltage change of the LED lamp group can be detected in real time, so that the output voltage can be adjusted in real time to ensure that the voltage of the LED lamp group remains stable, further improving the reliability. Among them, the specific model selection of the chip U1 can be selected according to the actual circuit parameters and requirements, which belongs to the conventional technical means in the field and will not be elaborated in detail here.
[0067] Referring to Figure 3 , in some embodiments of the present invention, the constant current and sampling module 300 includes:
[0068] Switching transistor Q2, the drain of the switching transistor Q2 is electrically connected to the output end of the power factor correction and boost module 200 through the resistor R12 and the resistor R11 in sequence, and the source of the switching transistor Q2 is grounded;
[0069] Voltage regulating diode DW2, the positive terminal of the voltage regulating diode DW2 is grounded together with the source of the switching transistor Q2, and the negative terminal of the voltage regulating diode DW2 is connected to the connection node between the resistor R12 and the resistor R11;
[0070] Switching transistor Q3, the gate of the switching transistor Q3 is electrically connected to the drain of the switching transistor Q2, the source of the switching transistor Q3 is electrically connected to the gate of the switching transistor Q2 through a resistor R13, the source of the switching transistor Q3 is also grounded through a resistor R14, the drain of the switching transistor Q3 is electrically connected to the ground terminal of the shunt control module 400, the drain of the switching transistor Q3 is also grounded through a resistor R15, a temperature resistor NTC, and a resistor R16 in sequence, and the source of the switching transistor Q3 is also electrically connected to the node between the resistor R15 and the temperature resistor NTC;
[0071] Sampling unit 310, the input end of the sampling unit 310 is electrically connected to the drain of the switching transistor Q3, and the sampled end of the sampling unit 310 is electrically connected to the feedback end of the power factor correction and boost module 200.
[0072] Refer to Figure 3 , in some embodiments of the present invention, the sampling unit 310 includes a resistor R17 and a resistor R18. One end of the resistor R17 is electrically connected to the drain of the switching transistor Q3, the other end of the resistor R17 is grounded through the resistor R18, and the node between the resistor R17 and the resistor R18 serves as the sampled end of the constant current and sampling module 300.
[0073] Among them, by cooperating to control the on-off states of the switching transistors Q2 and Q3 and the real-time change of the temperature resistor NTC, the output current of the power factor correction and boost module 200 can be adjusted in real time according to the current change of the LED lamp group, so as to ensure that the total current remains unchanged. The sampling unit 310 can collect the voltage change of the LED lamp group in real time and then feed it back to the feedback unit 210 in real time, so as to ensure that the power factor correction and boost module 200 can output stably, thereby reducing the voltage change amplitude and reducing the influence of the ripple voltage.
[0074] Refer to Figure 3 , in some embodiments of the present invention, the shunt control module 400 includes:
[0075] Chip U2, the power supply terminal of the chip U2 is electrically connected to the output terminal of the power factor correction and boost module 200 through a resistor R25, the clock terminal of the chip U2 is electrically connected to the control signal terminal of the power factor correction and boost module 200 through a resistor R24, that is, the clock terminal of the chip U2 is electrically connected to the drain of the switching transistor Q1 through a resistor R24, and the chip U2 has at least two output terminals;
[0076] The shunt unit 410 has at least two output terminals. Each output terminal of the shunt unit 410 is electrically connected to the corresponding output terminal of the chip U2 and serves as one of the LED current control terminals. The ground terminal of the shunt unit 410 is electrically connected to the ground terminal of the chip U2.
[0077] Among them, the chip U2 is a conventional dimming chip, which can synchronously adjust the signals of at least two output terminals of the chip U2 to adjust the color temperature change of the corresponding LED lamp group. Those skilled in the art can select a suitable model according to actual needs, and the specific selection method will not be described here. At the same time, the shunt unit 410 can control the total current of at least two LED lamp groups to remain unchanged, shunt it in proportion, and ensure that the LED lamp groups do not affect each other and can work independently.
[0078] Refer to Figure 3 , in some embodiments of the present invention, the shunt unit 410 includes at least two shunt resistors. One end of each shunt resistor is electrically connected to the corresponding output terminal of the chip U2, and the other end of each shunt resistor is electrically connected to the ground terminal of the chip U2. Specifically, by using shunt resistors with different resistances, the total current output by the power factor correction and boost module 200 can be divided into currents with different proportions and input into the corresponding LED lamp groups.
[0079] Specifically, it can be seen Figure 3 , in this embodiment, the chip U2 has two output terminals, and at the same time, the shunt unit 410 includes two shunt resistors, namely resistor R26 and resistor R27. The specific connection method is as Figure 3 shown. It can be seen that the two LED lamp groups are in a parallel connection. The voltages of the two LED lamp groups are the same, and the total current remains unchanged. Each shunt resistor is also synchronously connected to the sampling unit 310 to facilitate real-time sampling of the voltage of the LED lamp group.
[0080] According to the embodiments of the present utility model, by setting in this way, at least the following effects can be achieved. The rectifying and filtering module 100 can convert an AC power supply into a DC power supply and can effectively suppress electromagnetic interference; the power factor correction and boost module 200 can adjust the power of the power supply to improve the efficiency of the power supply and boost the voltage; the constant current and sampling module 300 can effectively remove ripples, keep the total current of all LED lamp groups unchanged, and can timely feedback the real-time voltage of the LED lamp groups to the power factor correction and boost module 200, so that the power factor correction and boost module 200 can adjust the voltage in real time to keep the voltage of the working LED lamp groups stable; the power factor correction and boost module 200 can output corresponding pulse signals according to the voltage frequency change at the output end, and then control the signals of at least two LED current control ends of the shunt control module 400 to change correspondingly, so as to adjust the color temperature of the corresponding LED lamp groups; in addition, since the LED current control ends of the shunt control module 400 are independent of each other, even if any group of LED lamp groups has an abnormality, it will not affect other LED lamp groups, effectively improving the reliability.
[0081] As mentioned above, it is only the preferred embodiment of the present utility model. The present utility model is not limited to the above embodiments. As long as it achieves the technical effects of the present utility model by the same means, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure. It shall fall within the protection scope of the present utility model. Within the protection scope of the present utility model, its technical solutions and / or implementation manners can have various different modifications and changes.
Claims
1. An LED light mixing and dimming integrated control device, applied to at least two groups of LED lamps, characterized in that: include: A rectifier and filter module (100), the input end of which is used to be electrically connected to an AC power source; A power factor correction and boost module (200), the input end of which is electrically connected to the output end of the rectification and filtering module (100); the power factor correction and boost module (200) is capable of adjusting the power factor and voltage of the rectification and filtering module (100); the output end of the power factor correction and boost module (200) is electrically connected to the positive ends of at least two groups of LED lamp groups; and the control signal end of the power factor correction and boost module (200) is capable of outputting a corresponding pulse signal according to a voltage change of the power factor correction and boost module (200); A constant current and sampling module (300), wherein a first connection end of the constant current and sampling module (300) is electrically connected to an output end of the power factor correction and boost module (200), and a sampled end of the constant current and sampling module (300) is electrically connected to a feedback end of the power factor correction and boost module (200); A shunt control module (400), wherein the input end of the shunt control module (400) is electrically connected to the output end of the power factor correction and boost module (200), the control end of the shunt control module (400) is electrically connected to the control signal end of the power factor correction and boost module (200), the ground end of the shunt control module (400) is electrically connected to the second connection end of the constant current and sampling module (300), the shunt control module (400) has at least two LED current control ends, each of the LED current control ends is electrically connected to the negative end of the corresponding LED lamp group, and the shunt control module (400) can adjust the color temperature of the corresponding LED lamp group according to the change of the pulse signal.
2. The LED light mixing and light changing integrated control device according to claim 1, characterized in that: The rectification and filtering module (100) comprises: A filter unit (110), wherein an input end of the filter unit (110) is electrically connected to the AC power source; A rectifier bridge unit (120), wherein an input end of the rectifier bridge unit (120) is electrically connected to an output end of the filter unit (110).
3. The LED light mixing and light changing integrated control device according to claim 2, characterized in that: The rectification and filtering module (100) further comprises a fuse FU, wherein the fuse FU is electrically connected between the filtering unit (110) and the AC power source.
4. The LED light mixing and light changing integrated control device according to any one of claims 1 to 3, characterized in that: The power factor correction and boost module (200) comprises: A switch tube Q1, the drain of the switch tube Q1 being electrically connected to the output end of the rectifier filter module (100) through an inductor L3, the drain of the switch tube Q1 being electrically connected to the input end of the shunt control module (400) through a diode D1, the source of the switch tube Q1 being grounded through a resistor R4, and the drain of the switch tube Q1 being electrically connected to the control end of the shunt control module (400); A chip U1, wherein a current sampling terminal of the chip U1 is electrically connected to a source of the switch tube Q1, a gate driving terminal of the chip U1 is electrically connected to a gate of the switch tube Q1, and a high-voltage startup and power supply terminal of the chip U1 is electrically connected to an output terminal of the rectifier and filter module (100) via a resistor R6; An energy storage capacitor CD3, wherein the positive electrode of the energy storage capacitor CD3 is electrically connected to the negative terminal of the diode D1, the negative electrode of the energy storage capacitor CD3 is grounded, and both ends of the energy storage capacitor CD3 are also connected in parallel with a resistor R9; A feedback unit (210), wherein a sampling end of the feedback unit (210) is electrically connected to a sampled end of the constant current and sampling module (300), and an output end of the feedback unit (210) is electrically connected to a feedback end of the chip U1.
5. The LED light mixing and light changing integrated control device according to claim 4, characterized in that: The feedback unit (210) comprises: A voltage zener diode DW1, wherein the positive terminal of the voltage zener diode DW1 is electrically connected to the feedback terminal of the chip U1 through a resistor R10, and the negative terminal of the voltage zener diode DW1 is grounded through a capacitor; A diode D3, wherein the cathode terminal of the diode D3 is electrically connected to the cathode terminal of the voltage stabilizing diode DW1, and the anode terminal of the diode D3 serves as a sampling terminal of the feedback unit (210).
6. The LED light mixing and light changing integrated control device according to any one of claims 1 to 3, characterized in that: The constant current and sampling module (300) comprises: A switch tube Q2, wherein the drain of the switch tube Q2 is electrically connected to the output end of the power factor correction and boost module (200) through a resistor R12 and a resistor R11 in sequence, and the source of the switch tube Q2 is grounded; A voltage zener diode DW2, wherein the positive terminal of the voltage zener diode DW2 and the source of the switch tube Q2 are grounded together, and the negative terminal of the voltage zener diode DW2 is connected to a connection node between the resistor R12 and the resistor R11; A switch tube Q3, wherein the gate of the switch tube Q3 is electrically connected to the drain of the switch tube Q2, the source of the switch tube Q3 is electrically connected to the gate of the switch tube Q2 via a resistor R13, the source of the switch tube Q3 is also grounded via a resistor R14, the drain of the switch tube Q3 is electrically connected to the ground end of the shunt control module (400), the drain of the switch tube Q3 is also grounded via a resistor R15, a temperature resistor NTC and a resistor R16 in sequence, and the source of the switch tube Q3 is also electrically connected to a node between the resistor R15 and the temperature resistor NTC; A sampling unit (310), wherein an input end of the sampling unit (310) is electrically connected to the drain of the switch tube Q3, and a sampled end of the sampling unit (310) is electrically connected to a feedback end of the power factor correction and boost module (200).
7. The LED light mixing and light changing integrated control device according to claim 6, characterized in that: The sampling unit (310) comprises a resistor R17 and a resistor R18, one end of the resistor R17 is electrically connected to the drain of the switch tube Q3, the other end of the resistor R17 is grounded through the resistor R18, and the node between the resistor R17 and the resistor R18 serves as the sampled end of the constant current and sampling module (300).
8. The LED light mixing and light changing integrated control device according to any one of claims 1 to 3, characterized in that: The flow diversion control module (400) comprises: A chip U2, wherein the power supply end of the chip U2 is electrically connected to the output end of the power factor correction and boost module (200) via a resistor R25, the clock end of the chip U2 is electrically connected to the control signal end of the power factor correction and boost module (200) via a resistor R24, and the chip U2 has at least two output ends; The shunt unit (410) has at least two output ends, each output end of the shunt unit (410) is electrically connected to the output end corresponding to the chip U2 and serves as one of the LED current control ends, and the ground end of the shunt unit (410) is electrically connected to the ground end of the chip U2.
9. The LED light mixing and light changing integrated control device according to claim 8, characterized in that: The shunt unit (410) includes at least two shunt resistors, one end of each shunt resistor is electrically connected to the output end corresponding to the chip U2, and the other end of each shunt resistor is electrically connected to the ground end of the chip U2.