Intelligent dimming driving circuit with high integration level

Abstract

In order to solve the problems of more complex circuit and larger volume in the prior art, the utility model provides an intelligent dimming drive circuit with high integration level, which comprises an AC / DC input module, an integrated control module and an LED light source provided with a plurality of paths of LED particles which are electrically connected in sequence, and the integrated control module is electrically connected with a low-voltage power supply module provided with a low-voltage power supply circuit. According to the utility model, the traditional intelligent LED constant current driving and multiple working module integrated design is improved, the size of the intelligent driving power supply is greatly reduced on the premise of meeting the performance, the production process is simplified, and a good promotion effect is provided for the miniaturization and diversified design of the appearance of an LED product.

Description

Technical Field

[0001] The utility model relates to the technical field of electric lighting source, in particular to a highly integrated intelligent dimming drive circuit. Background Art

[0002] As people's living standards improve, LED lights, while meeting basic lighting needs, are increasingly playing a leading role in decorative applications in homes, businesses, and engineering. This requires lamps to have diverse shapes, posing a greater challenge to the size and appearance of LED circuits. Existing LED intelligent dimming circuits, which require an AC rectifier module, a constant current driver module, and an RF radio frequency and dimming control module, are often complex and bulky, significantly limiting the design of LED lamps.

[0003] In order to solve the above problems, the Chinese invention patent with patent number CN118019175A proposes a dimming LED driver chip, a driver circuit and a dimmable LED lamp, including an internal circuit; the internal circuit includes an MCU, a first rectifier bridge and a dimming circuit; the MCU includes a power input terminal, a dimming signal input terminal and a control signal output terminal; the first rectifier bridge converts AC power into DC power and outputs it to the power input terminal of the MCU; the first end of the dimming circuit is connected to an external key switch circuit, and the second end is connected to the dimming signal input terminal of the MCU; when the key switch is pressed, the state of the key switch circuit changes, causing the level state of the dimming signal input terminal of the MCU to change; the MCU calculates a control signal based on the level state of the dimming signal input terminal, and outputs the control signal to the LED lamp main circuit through the control signal output terminal, thereby realizing stepless dimming of the LED lamp. The dimming LED driver chip of the present invention has the advantages of high integration and small size. However, the driver circuit of this application is relatively complex, the production cost is high and the volume produced is also relatively large, which will be limited in terms of usage scenarios. Utility Model Content

[0004] The utility model mainly solves the problem of relatively complex circuits and large volume in the prior art, and provides a highly integrated intelligent dimming drive circuit.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0006] A highly integrated intelligent dimming drive circuit is characterized by including an AC / DC input module, an integrated control module and an LED light source provided with a plurality of LED particles, which are electrically connected in sequence. The integrated control module is electrically connected to a low-voltage power supply module provided with a low-voltage power supply circuit.

[0007] As a preferred solution, the AC / DC input module includes a current rectifier device, an EMI device connected to a first interface of the current rectifier device, and a lightning protection device connected to a fourth interface of the current rectifier device.

[0008] As a preferred solution, the current rectifying device includes a bridge rectifier, and the EMI device includes a common-mode inductor, a differential-mode inductor connected in series with the common-mode inductor, a capacitor C1, and a capacitor C2 connected in parallel with the capacitor C1.

[0009] As a preferred solution, the low-voltage power supply module includes an inductive device, a first filtering energy storage device connected in series with the inductive device, and a first resistive device with both ends connected to the integrated control module.

[0010] As a preferred solution, the integrated control module includes a channel constant current output control module, an RF radio frequency transceiver function module electrically connected to the LED light source, a radio frequency and single chip module power supply circuit and a harmonic correction control module.

[0011] As a preferred solution, the integrated control module is also electrically connected to a harmonic correction module provided with a harmonic correction circuit, and the harmonic correction module includes a second filtering energy storage device and a second resistance device.

[0012] As a preferred solution, the integrated control module is also electrically connected to an RF radio frequency antenna, and the RF radio frequency antenna includes a third filtering energy storage device, a third resistance device and an antenna.

[0013] As a preferred solution, the LED light source includes SMD lamp beads, plug-in lamp beads, multi-color integrated lamp beads and COB lamp beads.

[0014] Therefore, the advantages of the present invention are:

[0015] The utility model improves the traditional intelligent LED constant current driver and integrates multiple working modules into the design. Under the premise of meeting the performance requirements, it greatly simplifies the volume of the intelligent driving power supply and simplifies the production process, providing a good promoting effect on the miniaturization and diversified design of LED product appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the block diagram of the intelligent dimming drive circuit of the utility model;

[0017] Figure 2 This is the intelligent dimming drive circuit diagram of the utility model. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0019] Example:

[0020] As living standards continue to improve, the lighting industry has also undergone significant changes. The widespread adoption of LED lamps, in particular, has not only achieved significant progress in the lighting field but also significantly enhanced its decorative and functional aspects. With their energy-saving, environmentally friendly, long lifespan, and adjustable brightness, LED lamps have gradually replaced traditional incandescent and fluorescent lamps, becoming the lighting tool of choice for modern homes, commercial spaces, and engineering projects. While meeting basic lighting needs, LED lamps are also gaining increasing attention for their decorative qualities. Design, aesthetics, and compatibility with the environment are becoming key considerations for consumers when choosing a lamp.

[0021] With the diversification of market demands, the design requirements for LED lamps are becoming increasingly complex. People are no longer satisfied with simple lighting functions; instead, they seek to create diverse atmospheres and enhance the aesthetics and comfort of spaces through the design of lamps. Therefore, lamp designs must not only possess unique shapes but also be compatible with diverse interior décor styles to meet consumers' individual needs. In this context, lamp designers face unprecedented challenges, requiring them to continuously innovate in design while ensuring that all necessary electronic components can be integrated within limited space.

[0022] However, a major challenge in LED lamp design lies in minimizing the size of the circuitry while ensuring functionality and aesthetics. Existing LED intelligent dimming circuits are often composed of multiple modules, including an AC rectifier, a constant current driver, an RF module, and a dimming control module. This combination of modules results in a relatively complex circuit structure, occupying a large space and limiting the lamp's design. Especially in small lamps requiring sophisticated design, how to accommodate these electronic components within a limited space while maintaining an aesthetically pleasing appearance has become a pressing challenge for designers.

[0023] In order to solve the above problems, the present application provides a highly integrated intelligent dimming drive circuit, which aims to solve the problems of complex circuits, large volume, and influence on the appearance design of lamps in the prior art. The circuit comprises an AC / DC input module, an integrated control module, and an LED light source with a plurality of LED particles, which are electrically connected in sequence. The integrated control module is electrically connected to a low-voltage power supply module with a low-voltage power supply circuit. The design of the present application greatly simplifies the circuit structure and reduces the volume of the circuit by integrating multiple functional modules into one control module, thus providing greater flexibility for the appearance design of lamps.

[0024] First, the AC / DC input module, as the input part of the circuit, is responsible for converting AC power into DC power, providing a stable power input for the entire circuit. Traditional AC / DC conversion modules are typically large and require multiple components to complete functions such as rectification and filtering. In this application, by optimizing the circuit design and selecting efficient small components, the size of the AC / DC input module has been significantly reduced, while also improving the circuit's conversion efficiency.

[0025] Secondly, the integrated control module is the core part of the intelligent dimming drive circuit. This module integrates multiple functions such as a constant current drive circuit, an RF radio frequency module, and a dimming control module. The constant current drive circuit is used to provide a stable current for the LED light source to ensure the stability of the brightness and service life of the LED. The RF radio frequency module is used to receive external wireless signals to realize remote control and dimming functions of the lamp. Traditional intelligent dimming circuits often require multiple independent modules to perform these functions separately. However, this application integrates these functions into one control module, which not only reduces the volume of the circuit, but also simplifies the circuit design and reduces production costs.

[0026] Furthermore, the low-voltage power supply module is also a crucial component of this intelligent dimming driver circuit. This module incorporates a low-voltage power supply circuit, providing a stable low-voltage power source for the integrated control module. While traditional low-voltage power supply circuits typically require an additional power supply module, this application further reduces the circuit's size and complexity by integrating the low-voltage power supply circuit with the integrated control module.

[0027] Finally, the LED light source utilizes a multi-channel LED design, each with independently controlled brightness and color, enabling diverse lighting effects. This design not only meets the lighting needs of different scenarios but also achieves energy savings through dimming.

[0028] Through the above design, the highly integrated intelligent dimming driver circuit provided in this application has been significantly optimized in terms of size and complexity, greatly improving the flexibility of LED lamp design. This innovative integrated design not only meets the high demands of modern consumers for lamp appearance, but also provides more stable and efficient lighting effects, with broad application prospects.

[0029] The AC / DC input module includes a circuit protection device, a current rectifier device, an energy storage filter device, an EMI device connected to a first interface of the current rectifier device, and a lightning protection device connected to a fourth interface of the current rectifier device.

[0030] The current rectifying device includes a bridge rectifier, and the EMI device includes a common-mode inductor, a differential-mode inductor connected in series with the common-mode inductor, a capacitor C1, and a capacitor C2 connected in parallel with the capacitor C1.

[0031] The low-voltage power supply module comprises a sensing device, a first filter and energy storage device connected in series with the sensing device, and a first resistance device connected to the integrated control module at both ends.

[0032] The AC / DC input module is an important part of the entire drive circuit, which is responsible for converting the external input alternating current (AC) into direct current (DC) to provide stable direct current power for the subsequent circuit modules. In order to ensure the safety, stability and reliability of the circuit, a variety of circuit protection and filtering devices are integrated in the module to cope with various possible power fluctuations and electromagnetic interference.

[0033] Firstly, the circuit protection devices in the AC / DC input module are used to ensure the safe operation of the circuit. These protection devices can include fuses, NTC (Negative Temperature Coefficient) elements, etc., which are used to quickly cut off the circuit or limit the current in the case of excessive current or temperature, thereby avoiding circuit damage or causing safety accidents. In addition, MOV (Metal Oxide Varistor) and other overvoltage protection devices may also be included to cope with transient voltage spikes and prevent damage to circuit elements caused by excessive voltage.

[0034] Secondly, the current rectifier device plays a crucial role in the AC / DC input module. Typically, the current rectifier device in the module includes a bridge rectifier. The main function of the bridge rectifier is to rectify the input alternating current into direct current. The waveform of alternating current is alternating positive and negative, while direct current is unidirectional. Through the bridge rectifier, both positive and negative half waves of alternating current can be converted into current of the same direction, thereby obtaining pulsating direct current.

[0035] In order to further stabilize the output direct current and reduce the ripple, the AC / DC input module also includes energy storage filter devices. These filter devices are usually capacitors or inductors, which are used to smooth the pulsating direct current after rectification, reduce the ripple amplitude, and make the output direct current more stable. Energy storage filter devices usually play the role of storing energy and filtering unnecessary high-frequency noise in the circuit, thereby providing a more pure power supply for the subsequent circuit modules.

[0036] EMI devices are also key components of the AC / DC input module, mainly used to suppress electromagnetic interference generated in the circuit, preventing it from radiating to the outside world or receiving interference signals from the outside world. EMI devices usually include common-mode inductors, differential-mode inductors, and filter capacitors. In the present application, the EMI device includes a common-mode inductor, a differential-mode inductor connected in series with the common-mode inductor, a capacitor C1 and a capacitor C2 connected in parallel with the capacitor C1. The common-mode inductor is used to suppress common-mode interference signals, while the differential-mode inductor is used to suppress differential-mode interference signals. Capacitors C1 and C2 are used in cooperation with inductors to further filter high-frequency noise, making the circuit more resistant to electromagnetic interference, thereby improving the electromagnetic compatibility (EMC) of the entire system.

[0037] AC / DC input modules also feature specially designed lightning protection devices to mitigate potential lightning strikes or power grid surges. These devices are typically installed at the fourth interface of the current rectifier. They are designed to quickly shunt or clamp excessive voltage to a safe level in the event of a lightning strike or voltage transient, protecting other components in the circuit from damage. Typically, lightning protection devices include gas discharge tubes or varistors, which effectively absorb transient high voltages while minimizing their impact on the circuit under normal circumstances.

[0038] The low-voltage power supply module is another key component of the present invention, responsible for providing a stable low-voltage DC power supply to the integrated control module and other circuit components requiring low-voltage power. The low-voltage power supply module includes an inductor, a first filtering and energy storage device connected in series with the inductor, and a first resistor, both ends of which are connected to the integrated control module.

[0039] Inductive devices, typically inductors or transformers, are used for voltage conversion or filtering. Through these devices, the input voltage is appropriately converted to provide the required low-voltage output. Furthermore, inductive devices can be used in conjunction with subsequent filtering and energy storage devices to further smooth the voltage output, reducing voltage fluctuations and ripple, thereby providing a more stable low-voltage power supply.

[0040] The first energy-storage filter, typically a capacitor or inductor, connected in series with the inductive device, stores energy and filters high-frequency noise from the power supply. The filter's primary function is to ensure the stability of the low-voltage power supply, ensuring a smooth and stable supply voltage, thus meeting the high power requirements of the integrated control module.

[0041] In a low-voltage power supply module, both ends of the first resistor are connected to the integrated control module, providing important protection and current limiting. Resistors, such as resistors, can perform various functions in circuits, including current limiting, voltage division, and filtering. They help control current flow, protecting the integrated control module from excessive current, and helping the circuit achieve the required operating voltage and current conditions.

[0042] Through the coordinated work of the AC / DC input module and the low-voltage power supply module, the utility model can provide stable power support for the integrated control module and the LED light source, ensuring efficient, stable and safe operation of the entire system.

[0043] The integrated control module includes a channel constant current output control module, an RF transceiver module electrically connected to the LED light source, a RF and single-chip module power supply circuit, and a harmonic correction control module. The integrated control module is also electrically connected to a harmonic correction module equipped with a harmonic correction circuit. The harmonic correction module includes a second filter and energy storage device and a second resistor. The integrated control module is also electrically connected to an RF antenna, which includes a third filter and energy storage device, a third resistor, and an antenna.

[0044] The integrated control module is the core component of this utility model, responsible for coordinating and controlling the various functions of the entire LED intelligent dimming drive circuit. This module is composed of multiple submodules to implement various complex control and communication functions. First, the integrated control module contains a channel constant current output control module, which is responsible for providing stable constant current output to multiple LED light sources, ensuring that the LEDs maintain stable brightness and color temperature under different operating environments. The constant current output control module effectively prevents flickering or overheating of the LED light source due to current fluctuations through precise current control, thereby extending the service life of the LED and improving the stability and consistency of the lighting effect.

[0045] In addition, the integrated control module includes an RF transceiver module electrically connected to the LED light source. This module is responsible for receiving and transmitting wireless signals, enabling intelligent control of the LED lamp via a wireless network. Through the RF transceiver module, users can remotely adjust the brightness, color temperature, and on / off status of the light, greatly enhancing convenience and flexibility. This module relies on the RF and MCU power supply circuit, which provides stable power support for the RF module and MCU, ensuring stable and reliable wireless communication.

[0046] The integrated control module is also connected to a harmonic correction module, which features harmonic correction circuitry. This module primarily reduces harmonic distortion in the circuit and improves the power factor, thereby minimizing interference with the power grid and increasing overall circuit efficiency. The harmonic correction module includes a second filter and energy storage device and a second resistor. These components work together to ensure smoother and more stable current after harmonic correction, further enhancing overall system performance.

[0047] In addition, the integrated control module is also electrically connected to the RF antenna. The RF antenna is an important part of wireless communication and is responsible for transmitting and receiving RF signals. The antenna part consists of a third filter energy storage device, a third resistor device, and an antenna body. The third filter energy storage device and the third resistor device play a role in filtering and impedance matching in the antenna circuit, ensuring the transmission quality of the RF signal, thereby effectively improving the reliability and coverage of wireless communication. Through the collaborative work of these modules, the integrated control module can realize multiple functions such as intelligent dimming, wireless control, and power management, greatly improving the performance and user experience of LED lamps.

[0048] LED light sources include SMD lamp beads, plug-in lamp beads, multi-color lamp beads and COB lamp beads.

[0049] Because this circuit can output a controllable LED driving current at a constant current, it meets the working characteristics of LED light-emitting particles in a broad sense. Therefore, in actual applications, LED light-emitting particles of different colors, brightness, voltage, power, packaging types, etc. can be selected according to product requirements, without affecting the rights claimed in this utility model. The specific embodiments described in this article are merely examples of the spirit of this utility model. Technicians in the technical field of the present utility model can make various modifications or supplements to the described specific embodiments or replace them with similar methods, but they will not deviate from the spirit of this utility model or exceed the scope defined by the attached claims.

Claims

1. A highly integrated intelligent dimming drive circuit, characterized in that: It includes an AC / DC input module, an integrated control module and an LED light source with several LED particles, which are electrically connected in sequence. The integrated control module is electrically connected to a low-voltage power supply module with a low-voltage power supply circuit; the integrated control module integrates a constant current drive circuit, an RF radio frequency module and a dimming control module; the constant current drive circuit provides a stable current for the LED light source; the RF radio frequency module receives external wireless signals to realize remote control and dimming functions of the lamp.

2. The highly integrated intelligent dimming driving circuit according to claim 1, characterized in that: The AC / DC input module includes a current rectifier, an EMI device connected to a first interface of the current rectifier, and a lightning protection device connected to a fourth interface of the current rectifier.

3. The highly integrated intelligent dimming driving circuit according to claim 2, characterized in that: The current rectifying device includes a bridge rectifier, and the EMI device includes a common-mode inductor, a differential-mode inductor connected in series with the common-mode inductor, a capacitor C1, and a capacitor C2 connected in parallel with the capacitor C1.

4. The highly integrated intelligent dimming driving circuit according to claim 1, characterized in that: The low-voltage power supply module includes an inductive device, a first filtering energy storage device connected in series with the inductive device, and a first resistive device with both ends connected to an integrated control module.

5. The highly integrated intelligent dimming driving circuit according to claim 1, characterized in that: The integrated control module includes a channel constant current output control module, an RF radio frequency transceiver function module electrically connected to the LED light source, a radio frequency and single chip module power supply circuit and a harmonic correction control module.

6. The highly integrated intelligent dimming driving circuit according to claim 5, characterized in that: The integrated control module is also electrically connected to a harmonic correction module provided with a harmonic correction circuit, and the harmonic correction module includes a second filtering energy storage device and a second resistance device.

7. A highly integrated intelligent dimming driving circuit according to claim 1, 5 or 6, characterized in that: The integrated control module is also electrically connected to the RF radio frequency antenna, and the RF radio frequency antenna includes a third filtering energy storage device, a third resistance device and an antenna.

8. The highly integrated intelligent dimming driving circuit according to claim 1, characterized in that: The LED light sources include SMD lamp beads, plug-in lamp beads, multi-color integrated lamp beads and COB lamp beads.

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