LED high-voltage illuminating lamp and driving circuit thereof

Abstract

The utility model discloses an LED high-voltage illuminating lamp and a driving circuit thereof. The driving circuit comprises an EMC module, a rectification module, a voltage transformation module, a driving module, a filtering module, a voltage reduction module and a feedback module. The input end of the EMC module is connected with an AC voltage source, and the output end is connected with the input end of the rectification module. The transformation module is provided with an input end, a first output end and a second output end, and the output end of the rectification module is connected with the input end of the transformation module; the driving module is connected with the EMC module and the rectification module, the input end of the filtering module is connected with the first output end of the voltage transformation module, and the output end of the filtering module outputs first power supply voltage; the input end of the step-down module is connected with the second output end of the transformation module, and the output end of the step-down module outputs second power supply voltage; the first power supply voltage and the second power supply voltage are different, and the feedback module is connected with the filtering module, the voltage reduction module and the driving module.

Description

Technical Field

[0001] This utility model relates to the field of LED high-voltage lighting technology, specifically to a high-voltage lighting lamp and its driving circuit. Background Technology

[0002] In recent years, with the development of optoelectronic technology, the brightness and efficiency of LED lights have greatly improved, making their application in facility agriculture production feasible, especially for closed and controllable facility agriculture environments such as plant factories, tissue culture rooms, and plant growth chambers, where they are a very suitable artificial light source. However, industrial electricity is usually around 380-480V, while there are few LED high-voltage lighting drivers on the market that meet 480VAC voltage. Furthermore, existing LED high-voltage lighting driver circuits can only output a single power supply voltage, which cannot meet the power supply requirements of multi-functional high-voltage lighting. Utility Model Content

[0003] To address the shortcomings of existing technologies, an LED high-voltage lighting lamp and its driving circuit are provided.

[0004] To achieve the above objectives, this utility model provides an LED high-voltage lighting driving circuit, including an EMC module, a rectifier module, a transformer module, a driver module, a filter module, a step-down module, and a feedback module. The input terminal of the EMC module is connected to an AC voltage source, and its output terminal is connected to the input terminal of the rectifier module. The transformer module has an input terminal, a first output terminal, and a second output terminal, and the output terminal of the rectifier module is connected to the input terminal of the transformer module. The driver module is connected to both the EMC module and the rectifier module. The input terminal of the filter module is connected to the first output terminal of the transformer module, and the output terminal of the filter module outputs a first supply voltage. The input terminal of the step-down module is connected to the second output terminal of the transformer module, and the output terminal of the step-down module outputs a second supply voltage. The first supply voltage and the second supply voltage are different. The feedback module is connected to the filter module, the step-down module, and the driver module.

[0005] According to an embodiment of the utility model, feedback module includes photoelectric coupler U5, linear amplifier U3 and constant current constant voltage controller U2, photoelectric coupler U5 has first end, second end, third end and fourth end, its fourth end connects drive module, photoelectric coupler U5's third end is grounded, photoelectric coupler U5's first end is connected linear amplifier U3's positive input end and constant current constant voltage controller U2's first pin respectively, photoelectric coupler U5's second end is connected constant current constant voltage controller U2's third pin and fourth pin respectively, linear amplifier U3's reverse input end is connected voltage reduction module, linear amplifier U3's output and ground end respectively, linear amplifier U3's output is connected filter module and ground end respectively, constant current constant voltage controller U2's second pin ground end, constant current constant voltage controller U2's fourth pin is connected linear amplifier U3's output, photoelectric coupler U5's second pin and ground end respectively, constant current constant voltage controller U2's fifth pin is connected filter module and ground end respectively, constant current constant voltage controller U2 eighth pin and seventh pin ground end, constant current constant voltage controller U2's sixth pin as DIM+ port.

[0006] According to an embodiment of the utility model, EMC module includes coupling inductance L1, capacitor CX2, coupling inductance L2 and capacitor CX3, coupling inductance L1 is parallelly connected with capacitor CX2, coupling inductance L2 is parallelly connected with coupling inductance L2, capacitor CX2 is parallelly connected at the two ends of coupling inductance L2, and the two ends of capacitor CX2 are connected with the input end of rectification module.

[0007] According to an embodiment of the utility model, rectification module includes rectification bridge and filter assembly, the input end of rectification bridge is connected with the output end of EMC module, the output end of rectification bridge is connected with the input end of filter assembly, and the output end of filter assembly is connected with the input end of voltage transformation module.

[0008] According to an embodiment of the utility model, voltage transformation module includes RC assembly and multistage transformer T1, RC assembly is connected at the output end of rectification module, the primary side first winding of multistage transformer T1 is connected with RC assembly, and the primary side first winding of multistage transformer T1 is also connected with drive module, the secondary side first winding of multistage transformer T1 is connected with the input end of filter module, and the secondary side second winding of multistage transformer T1 is connected with the input end of voltage reduction module.

[0009] According to an embodiment of the utility model, drive module includes drive chip U1 and switch subassembly, drive chip U1 has first pin to eighth pin, drive chip U1's first pin connects voltage transformation module, drive chip U1's second pin is connected with photoelectric coupler U3's fourth end respectively, drive chip U1's third pin connects switch subassembly, drive chip U1's fourth pin is grounded, drive chip U1's fifth pin connects switch subassembly;Drive chip U1's sixth pin connects voltage transformation module, drive chip U1's eighth pin is connected with EMC module;Switch subassembly is connected with voltage transformation module still.

[0010] According to an embodiment of the utility model, filter module includes first voltage stabilizing subassembly, energy storage subassembly, first voltage division subassembly and coupled inductance L5, first voltage stabilizing subassembly's input end is connected with voltage transformation module's first output end, first voltage stabilizing subassembly's output end is connected in energy storage subassembly, first voltage division subassembly is connected in one end of energy storage subassembly, coupled inductance L5's one end is connected the other end of energy storage subassembly, coupled inductance L5's other end is connected first voltage division subassembly.

[0011] According to an embodiment of the utility model, voltage reduction module includes second voltage stabilizing subassembly, voltage stabilizing chip U6 and voltage stabilizing chip U5;Second voltage stabilizing subassembly's one end is connected in voltage transformation module's second output end, its other end is connected voltage stabilizing chip U6's input end, voltage stabilizing chip U6's output end is connected linear amplifier U3's reverse input end and linear amplifier U3's output end respectively;Voltage stabilizing chip U5's input end connects second voltage stabilizing subassembly, voltage stabilizing chip U5's output end exports second power supply voltage.

[0012] The utility model also provides a kind of high-pressure lighting, it includes the high-pressure lighting drive circuit described above, still include light-emitting module and color temperature adjusting module, light-emitting module includes first light-emitting subassembly and second light-emitting subassembly, first light-emitting subassembly's input end and second light-emitting subassembly's input end are connected with the output end of filter module, first light-emitting subassembly's output end and second light-emitting subassembly's output end are connected with color temperature adjusting module respectively.

[0013] According to the embodiment of the present application, the color temperature adjusting module comprises a control unit and a switch unit, the control unit has a V+ port and a V- port, the control unit comprises a third voltage stabilizing component, a second voltage dividing component, a switch tube Q91, a third voltage dividing component and a switch tube Q92; one end of the third voltage stabilizing component is connected with the V+ port, and the other end thereof is connected with the V- port; the second voltage dividing component is connected in parallel to both ends of the third voltage stabilizing component; the gate of the switch tube Q91 is connected with the second voltage dividing component, the drain thereof is connected with the first light-emitting component, and the source thereof is connected with the second voltage dividing component and the V- port; one end of the third voltage dividing component is connected with the second voltage dividing component, and the other end thereof is connected with the V- port and the source of the switch tube Q91 respectively; the gate of the switch tube Q92 is connected with the third voltage dividing component, the source thereof is connected with the V- port, and the drain thereof is connected with the second light-emitting component; the switch unit comprises a first switch group, the first switch group comprises a switch K1-A and a switch K1-C, one end of the switch K1-A is connected with one end of the switch K1-C, the other end of the switch K1-A is connected with the gate of the switch tube Q91, and the other end of the switch K1-C is connected with the gate of the switch tube Q92.

[0014] The present application has the advantages that the voltage signals output by the rectifier module are subjected to multi-stage voltage conversion by the voltage conversion module, so that the driving circuit provides different first and second power supply voltages to supply power to different functional modules in the high-voltage lighting lamp and meet the power demand of different functional modules in the high-voltage lighting lamp. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0016] Figure 1 The circuit diagram of the light-emitting module in the embodiment;

[0017] Figure 2 The circuit diagram of the light-emitting module in the embodiment;

[0018] Figure 3 The circuit diagram of the color temperature adjusting module in the embodiment.

[0019] Reference numerals

[0020] 1, EMC module; 2, rectifier module; 21, rectifier bridge; 22, filter component; 3, voltage transformation module; 31, RC component; 4, driving module; 41, switch component; 5, filter module; 51, first voltage stabilization component; 52, energy storage component; 53, first voltage division component; 6, voltage reduction module; 61, second voltage stabilization component; 7, feedback module; 8, light emitting module; 81, first light emitting component; 82, second light emitting component; 9, color temperature adjustment module; 91, control unit; 911, third voltage stabilization component; 912, second voltage division component; 913, third voltage division component; 92, switch unit; 921, first switch group. DETAILED DESCRIPTION

[0021] In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be understood by those skilled in the art that the present application can be practiced without the specific details. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to obscure aspects of the present application. Also, the description is not to be considered limiting in scope, since the application is covered by the appended claims.

[0022] In addition, the terms "first", "second", and the like, as used in the description and the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of use in either order. It is therefore intended that the following claims be construed to include all such applications. In the description and the claims of the application, each of the verbs, "comprise" "include" and the verb "comprising," "including" when used in the description and the claims are taken to specify the presence of stated features, integers, steps or components but do not preclude the presence or addition of one or more other features, integers, steps, components, or groups thereof. It is also noted that, as used herein, "and / or" refers to a combination or any one of each of the referenced items.

[0023] Embodiment One

[0024] Reference is made to Figure 1 , Figure 1The application discloses a high-voltage lighting lamp driving circuit diagram. The high-voltage lighting lamp driving circuit comprises an EMC module 1, a rectifier module 2, a voltage transformation module 3, a driving module 4, a filter module 5, a voltage reduction module 6 and a feedback module 7. The input end of the EMC module 1 is connected with an alternating voltage source, and the output end of the EMC module 1 is connected with the input end of the rectifier module 2. The output end of the rectifier module 2 is connected with the voltage transformation module 3. Further, the voltage transformation module 3 has an input end, a first output end and a second output end. The input end of the voltage transformation module 3 is connected with the output end of the rectifier module 2. The input end of the filter module 5 is connected with the first output end of the voltage transformation module 3, and the output end of the filter module 5 outputs a first power supply voltage. The input end of the voltage reduction module 6 is connected with the second output end of the voltage transformation module 3, and the output end of the voltage reduction module 6 outputs a second power supply voltage. It should be noted that the voltage values of the first power supply voltage and the second power supply voltage are different. The driving module 4 is connected with the output end of the EMC module 1 and the output end of the rectifier module 2 respectively. The feedback module 7 is connected with the filter module 5, the voltage reduction module 6 and the driving module 4 respectively.

[0025] In the actual use scene of the circuit, the 480V high-voltage alternating voltage source is input from the input end of the EMC module 1, the EMC module 1 filters the input alternating voltage source, reduces electromagnetic interference and then outputs. The rectifier module 2 receives the electrical signal output by the EMC module 1 and rectifies the electrical signal output by the EMC module 1, converts the input alternating current into direct current and outputs. The voltage transformation module 3 is used for reducing the voltage of the electrical signal output by the rectifier module 2 and outputting different voltages to supply power for the high-voltage lighting lamp. The filter module 5 is used for receiving the electrical signal of the first output end of the voltage transformation module 3, filtering the electrical signal output by the first output end of the voltage transformation module 3 and then outputting a stable first power supply voltage. The voltage reduction module 6 is used for receiving the electrical signal output by the second output end of the voltage transformation module 3, reducing the voltage of the electrical signal output by the voltage transformation module 3 and outputting a stable second power supply voltage. The feedback module 7 is used for receiving the voltages of the filter module 5 and the voltage reduction module 6 and then feeding back to the driving module 4. The driving module 4 is used for adjusting the power of the voltage transformation module 3 according to the electrical signal fed back by the feedback module 7, so that the voltage transformation module 3 maintains stable output. In this example, the first power supply voltage is used to supply power for the light-emitting component of the high-voltage lighting lamp, and the second power supply voltage is used to supply power for the fan in the high-voltage lighting lamp.

[0026] By adopting the voltage transformation module 3 to perform multi-stage voltage transformation on the electrical signal output by the rectifier module 2, the driving circuit provides different first power supply voltage and second power supply voltage to supply power for different functional modules in the high-voltage lighting lamp, so that the power demand of different functional modules in the high-voltage lighting lamp is met.

[0027] The voltage transformation module 3 comprises a second RC component 31 and a multi-stage transformer T1. One end of the RC component 31 is connected to the output end of the rectification module 2, and the other end is connected to the primary side first winding of the multi-stage transformer T1. The secondary side first winding of the multi-stage transformer T1 is connected to the input end of the filter module 5, and the secondary side second winding of the multi-stage transformer T1 is connected to the input end of the voltage reduction module 6. The primary side first winding of the multi-stage transformer T1 is also connected to the driving module 4. Further, the input end of the second RC component 31 serves as the input end of the voltage transformation module 3, the secondary side first winding of the multi-stage transformer T1 corresponds to the first output end of the voltage transformation module 3, and the secondary side second winding of the multi-stage transformer T1 corresponds to the second output end of the voltage transformation module 3.

[0028] The electrical signal output by the EMC module 1 passes through the RC component 31 and is input to the primary side first winding of the multi-stage transformer T1. The RC component 31 is used to reduce the peak voltage. When there is a momentary reverse pulse in the secondary side of the multi-stage transformer T1, the RC component 31 is used to absorb this part of the energy to reduce the impact on the subsequent circuit. The multi-stage transformer T1 receives the electrical signal output by the RC component 31 and performs multi-stage voltage division on the electrical signal output by the RC component 31 through the first winding and the second winding of the secondary side, so that the multi-stage transformer T1 outputs different voltages. At the same time, the multi-stage transformer T1 is controlled by the driving module 4, which is used to control the power of the multi-stage transformer T1.

[0029] The RC component 31 comprises a resistor R14 and a capacitor C6. One end of the capacitor C6 is connected to the output end of the rectification module 2 and one end of the primary side first winding of the multi-stage transformer T1, respectively, and the other end is connected to the other end of the primary side first winding of the multi-stage transformer T1. The resistor R14 is connected in parallel with the capacitor C6.

[0030] The voltage transformation module 3 further comprises a diode D3. The negative electrode of the diode D3 is connected to the capacitor C6 and the resistor R14, respectively, and the positive electrode is connected to the other end of the primary side first winding of the multi-stage transformer T1 and the driving module 4, respectively. The diode D3 is used to prevent the reverse flow of current in the circuit.

[0031] Further, the feedback module 7 comprises a photoelectric coupler U5, a linear amplifier U3 and a constant current and constant voltage controller U2. The photoelectric coupler U5 has a first end, a second end, a third end and a fourth end, wherein the third end and the fourth end are the connection ends of the photosensitive triode in the photoelectric coupler U5, and the first end and the second end are the connection ends of the light-emitting diode in the photoelectric coupler U5. The fourth end of the photoelectric coupler U5 is connected to the driving module 4, the third end of the photoelectric coupler U5 is grounded, the first end of the photoelectric coupler U5 is connected to the positive input end of the linear amplifier U3 and the first pin of the constant current and constant voltage controller U2, respectively, and the second end of the photoelectric coupler U5 is connected to the third pin and the fourth pin of the constant current and constant voltage controller U2, respectively; the reverse input end of the linear amplifier U3 is connected to the voltage reduction module 6, the output end of the linear amplifier U3 and the ground end, respectively; the output end of the linear amplifier U3 is connected to the filter module 5, the voltage reduction module 6 and the reverse input end of the linear amplifier U3, respectively. The first pin of the constant current and constant voltage controller U2 is connected to the voltage reduction module 6. The second pin of the constant current and constant voltage controller U2 is grounded. The third pin of the constant current and constant voltage controller U2 is connected to the second end of the photoelectric coupler U5. The fourth pin of the constant current and constant voltage controller U2 is connected to the output end of the linear amplifier U3, the second pin of the photoelectric coupler U5 and the ground end, respectively. The fifth pin of the constant current and constant voltage controller U2 is connected to the filter module 5 and the ground end, respectively. The eighth pin and the seventh pin of the constant current and constant voltage controller U2 are grounded, and the sixth pin of the constant current and constant voltage controller U2 is used as a DIM+ port.

[0032] In this embodiment, the model of the constant current and constant voltage controller U2 is LD8115. The constant current and constant voltage controller U2 has a first pin, a second pin, a third pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin and an eighth pin. Among them, the first pin is a VCC interface, which is connected to the voltage reduction module 6, and the voltage reduction module 6 outputs appropriate voltage to supply power to the constant current and constant voltage controller U2. The second pin is a GND interface. The third pin is an OUT interface, which is connected to the second end of the photoelectric coupler U5 to output a feedback signal to the photoelectric coupler U5, and then feedback to the driving module 4 through the photoelectric coupler U5. The fourth pin is an ISEN interface, which is connected to the first output end of the voltage transformation module 3 for detecting current. The fifth pin is a VSEN interface, which is used for detecting the output voltage of the constant current and constant voltage controller U2. The sixth pin is a DCDIM interface. The seventh pin is an ADIM interface, and the eighth pin is a VREF interface.

[0033] In actual application scenarios, the fourth pin of the constant current and constant voltage controller U2 detects the output current of the output end of the linear amplifier U3, and determines whether the current of the output end of the linear amplifier U3 is equal to the rated output current. If it is detected that the current of the output end of the linear amplifier U3 deviates from the rated output current, a feedback signal is sent to the optocoupler U5, and is fed back to the driving module 4 through the optocoupler U5. The driving module 4 adjusts the power of the multi-stage transformer T1 according to the signal sent by the optocoupler U5, so as to realize constant current output.

[0034] In addition, the feedback module 7 also has a DIM+ port and a DIM- port for connecting with an external temperature detection chip. The sixth pin of the constant current and constant voltage controller U2 serves as the DIM+ port, and the DIM- port is respectively connected to the fifth pin, the sixth pin, the seventh pin, the eighth pin and the ground end of the constant current and constant voltage controller U2. In actual use, the temperature detection chip detects the temperature of the lamp panel, and the temperature detection chip changes its own voltage according to the change of the temperature. The constant current and constant voltage controller U2 adjusts the feedback signal output according to the voltage of the detected temperature detection chip, and then feeds back to the driving module 4 through the optocoupler U5. The driving module 4 adjusts the power of the variable voltage module 3 according to the signal output by the optocoupler U5. For example, when the temperature detection chip detects that the temperature of the lamp panel of the high-voltage lighting lamp is too high, the voltage of the temperature detection chip rises. The constant current and constant voltage controller U2 detects that the voltage of the temperature detection chip rises, and then outputs a feedback signal to the optocoupler U5. The light-emitting diode inside the optocoupler U5 is turned on and emits light, so that the photosensitive triode inside the optocoupler U5 generates a corresponding signal output. The driving module 4 receives the voltage sent by the optocoupler U5, and reduces the power of the variable voltage module 3 to reduce heat.

[0035] Further, the EMC module 1 includes a coupling inductor L1, a capacitor CX2, a coupling inductor L2 and a capacitor CX3, wherein the two ends of the coupling inductor L1 are connected in parallel with the two ends of the capacitor CX2. The two ends of the coupling inductor L2 are connected in parallel with the two ends of the capacitor CX2. The capacitor CX3 is connected in parallel with the coupling inductor L2, and the two ends of the capacitor CX3 are connected with the input end of the rectifier module 2.

[0036] In this example, the two ends of the coupling inductor L1 are connected in parallel between the live wire and the neutral wire of the input alternating current power supply, and the coupling inductor L1 is used for filtering to filter out high-frequency noise. The capacitor CX2 is used to filter out differential mode interference. By connecting the coupling inductor L1 and the capacitor CX2 in parallel, high-frequency noise and electromagnetic interference signals in the circuit can be effectively filtered out, and the signal quality and stability of the circuit can be improved. The coupling inductor L2 has the same function as the coupling inductor L1, and the capacitor CX2 has the same function as the capacitor CX3, which will not be described here. Preferably, the capacitor CX2 and the capacitor CX3 are X capacitors with a voltage resistance of 500V to prevent the input high-voltage 480V alternating current from damaging the elements in the circuit.

[0037] The rectifier module 2 comprises a rectifier bridge 21 and a filter assembly 22. The input end of the rectifier bridge 21 is connected to the output end of the EMC module 1, and the output end of the rectifier bridge 21 is connected to the input end of the filter assembly 22. The output end of the filter assembly 22 is connected to the output end of the transformer module 3.

[0038] The input end of the rectifier bridge 21 receives the electrical signal output by the EMC module 1, and the rectifier bridge 21 rectifies the electrical signal output by the EMC module 1 to convert alternating current into direct current output. The filter assembly 22 filters the direct current output by the rectifier bridge 21. In this example, the filter assembly 22 comprises a capacitor CB1, a core inductor L3, a resistor R3, and a capacitor CB2. The capacitor CB1 is connected in parallel to the output end of the rectifier bridge 21, and the capacitor CB2 is connected in parallel to the capacitor CB1. One end of the core inductor L3 is respectively connected to one end of the rectifier bridge 21 and the capacitor CB1, and the other end of the core inductor L3 is respectively connected to the capacitor CB2 and the input end of the transformer module 3. One end of the resistor R3 is respectively connected to one end of the capacitor CB1 and the core inductor L3, and the other end of the resistor R3 is respectively connected to the other end of the core inductor L3 and the capacitor CB2. Preferably, the capacitor CB1 and the capacitor CB2 are CBB capacitors with a voltage of 1000V, which are used to withstand high voltage and prevent damage to components in a high-voltage environment.

[0039] The drive module 4 comprises a drive chip U1 and a switch assembly 41. The drive chip U1 has a first pin, a second pin, a third pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin, and an eighth pin. The first pin of the drive chip U1 is connected to the transformer module 3, the second pin of the drive chip U1 is grounded, the third pin of the drive chip U1 is connected to the switch assembly 41, the fourth pin of the drive chip U1 is grounded, the fifth pin of the drive chip U1 is connected to the switch assembly 41, the sixth pin of the drive chip U1 is connected to the voltage dividing unit, and the eighth pin of the drive chip U1 is connected to the EMC module 1.

[0040] In this example, the driving chip U1 is a high-voltage starting LED controller with model number LD7838. In actual use, the fifth pin of the driving chip U1 outputs a signal to drive the switching state of the MOS tube Q1, thereby controlling the output of the multi-stage transformer T1. The second pin of the driving chip U1 is a feedback terminal, which is connected to the output terminal of the optocoupler U5 in actual use. The third pin of the driving chip U1 is a current detection pin, which is connected to the source of the MOS tube Q1. In use, the third pin of the driving chip U1 detects the source current of the MOS tube Q1. When the driving chip U1 detects that the source current of the MOS tube Q1 exceeds the set threshold, the driving chip U1 turns on the overcurrent protection and adjusts the output current to protect the circuit from damage. The fourth pin of the driving chip U1 is a GND ground pin. The eighth pin of the driving chip U1 is a high-voltage input terminal for receiving high-voltage power. The sixth pin of the driving chip U1 is a VCC terminal for receiving a supply voltage.

[0041] The switch assembly 41 includes a resistor R9, a resistor R8, a diode D2, a MOS tube Q1, a resistor R10, and a capacitor C5. One end of the resistor R9 is connected to the fifth pin of the driving chip U1, and the other end is connected to the gate of the MOS tube. The drain of the MOS tube is connected to the primary side first winding of the multi-stage transformer T1. The source of the MOS tube Q1 is connected to the third pin of the driving chip U1 and the ground terminal, respectively. One end of the resistor R8 is connected to the resistor R9 and the fifth pin of the driving chip U1, and the other end is connected to the cathode of the diode D2. The anode of the diode D2 is connected to the resistor R9, the gate of the MOS tube Q1, and one end of the resistor R10, respectively. The other end of the resistor R10 is connected to the source of the MOS tube Q1. The capacitor C5 is connected in parallel across the drain and source of the MOS tube Q1.

[0042] In actual use, the second pin of the driving chip U1 receives the signal sent by the optocoupler U5 and adjusts the duty cycle of the output PWM signal according to the signal sent by the optocoupler U5. The MOS tube Q1 is used to receive the PWM signal sent by the driving chip U1 and switch the on-off state according to the PWM signal sent by the driving chip U1 to control the average current of the primary winding of the multi-stage transformer T1, thereby controlling the power of the multi-stage transformer T1.

[0043] In this example, to protect the drive chip U1 from high voltage damage. The drive module 4 also includes resistance R1, resistance R2 and resistance R4. Among them, one end of resistance R1 is connected to one end of coupling inductor L2 and one end of capacitor CX2 respectively, and the other end is connected with resistance R2 in series. The other end of resistance R2 is connected to the other end of coupling inductor L2 and the other end of capacitor CX2 respectively. One end of resistance R4 is connected to resistance R1 and resistance R2, and the other end is connected to the eighth pin of drive chip U1. The input high voltage alternating current is output after voltage division to the eighth pin of drive chip U1, avoiding damage to drive chip U1 by high voltage.

[0044] The filter module 5 includes a first voltage stabilizing component 51, an energy storage component 52, a first voltage dividing component 53, and a coupling inductor L5. The input end of the first voltage stabilizing component 51 is connected to the first output end of the voltage transformation module 3, and the output end of the voltage stabilizing component is connected to the energy storage component 52. One end of the first voltage dividing component 53 is connected to one end of the energy storage component 52, and the other end is connected to one end of the coupling inductor L5. The other end of the coupling inductor L5 is connected to the other end of the energy storage component 52.

[0045] In the actual operation of the circuit, the first voltage stabilizing component 51 receives the electrical signal output by the first winding of the secondary side of the multi-stage transformer T1 and stabilizes the electrical signal output by the first winding of the secondary side of the multi-stage transformer T1, and then outputs a stable electrical signal. The energy storage component 52 is used for energy storage, and when the electrical signal output by the multi-stage transformer T1 is unstable, the energy storage component 52 discharges to maintain the stable output of the first power supply voltage. The first voltage dividing component 53 is used for voltage division. The coupling inductor L5 is used for filtering to reduce high-frequency noise signals, making the output first power supply voltage more stable.

[0046] In this example, the first voltage stabilizing component 51 includes a diode D5, a resistance R17, a resistance R18, and a capacitor C7. The positive electrode of the diode D5 is connected to one end of the first winding of the secondary side of the multi-stage transformer T1, and the negative electrode of the diode D5 is connected to the ground and the energy storage component 52 respectively. The resistance R17 and the capacitor C7 are connected in series and then connected in parallel across the diode D5. The capacitor R18 is connected in parallel with the resistance R17. The diode D5 is used to prevent current from flowing in the opposite direction in the circuit. The resistance R17, the resistance R18, and the capacitor C7 form an RC circuit, which is used to stabilize the electrical signal output by the first winding of the secondary side of the multi-stage transformer T1, making the output electrical signal smoother.

[0047] The energy storage component 52 includes a resistor R15, a capacitor CE3, a resistor R16 and a capacitor CE4. One end of the resistor R15 is connected to the negative pole of a diode D5 and a capacitor C7 respectively, and the other end of the resistor R15 is connected to the other end of a primary winding of the multi-stage transformer T1 and a ground terminal respectively. One end of the capacitor CE3 is connected to the negative pole of the diode D5, the capacitor C7 and the resistor R15 respectively, and the other end of the capacitor CE3 is grounded. The resistor R16 and the capacitor CE4 are connected in parallel between the two ends of the capacitor CE3. Among them, the capacitor CE3 and the capacitor CE4 are both polarized capacitors, which are used for energy storage. The resistor R15 is used for current limiting, limiting the charging and discharging speed of the capacitor CE3. The effect of the resistor R16 is the same as that of the resistor R15, which will not be described here.

[0048] The first voltage division component 53 includes a diode D7, a resistor R19, a resistor R24, a resistor R25 and a resistor R36. The positive pole of the diode D7 is connected to the capacitor CE4, the resistor R16, the capacitor CE3, the resistor R15 and a ground terminal respectively, and the negative pole of the diode D7 is connected to one end of the resistor R36, which is connected to the fourth pin of the temperature detection chip U2, and the other end of the resistor R36 is connected. The resistor R19, the resistor R24 and the resistor R25 are connected in parallel between the two ends of the diode D7.

[0049] The diode D7 is used to prevent reverse current flow, and the resistors R19, R24 and R25 are used for voltage division, protecting the diode D7 from being damaged by high voltage. The resistor R36 is used for current limiting.

[0050] The voltage reduction module 6 includes a second voltage stabilization component 61, a voltage stabilization chip U6 and a voltage stabilization chip U5. One end of the second voltage stabilization component 61 is connected to the second output end of the voltage transformation module 3, and the other end of the second voltage stabilization component 61 is connected to the input end of the voltage stabilization chip U6. The output end of the voltage stabilization chip U6 is connected to the inverting input end of the linear amplifier U3 and the output end of the linear amplifier U3 respectively. The input end of the voltage stabilization chip U5 is connected to the second voltage stabilization component 61, and the output end of the voltage stabilization chip U5 outputs a second power supply voltage.

[0051] The second voltage stabilization component 61 is used to receive the electrical signal output by the second winding of the secondary side of the multi-stage transformer T1, and to stabilize the electrical signal output by the second winding of the secondary side of the multi-stage transformer T1. The stabilized electrical signal is input to the input end of the voltage stabilization chip U6, and the voltage stabilization chip U6 converts the electrical signal output by the second voltage stabilization component 61 into a stable rated voltage output. The voltage stabilization chip U5 is used to receive the electrical signal output by the second voltage stabilization component 61, and to convert the electrical signal output by the second voltage stabilization component 61 into a stable second power supply voltage output. In this example, the model of the voltage stabilization chip U6 is CJ78L08, which is used to convert the output voltage into a 5V rated voltage output. The signal of the voltage stabilization chip U5 is L7812, which is used to convert the input voltage into a 12V rated voltage output.

[0052] Example Two

[0053] Please refer to Figure 2 and Figure 3 , Figure 2 is a circuit diagram of the light-emitting module, Figure 3 is a circuit diagram of the color temperature adjusting module. In the embodiment, a high-voltage lighting lamp is also provided, which comprises the driving circuit of the high-voltage lighting lamp, the light-emitting module 8 and the color temperature adjusting module 9. The light-emitting module 8 comprises a first light-emitting component 81 and a second light-emitting component 82. The input end of the first light-emitting component 81 and the input end of the second light-emitting component 82 are connected to the output end of the filter module 5 respectively. The output end of the first light-emitting component 81 and the output end of the second light-emitting component 82 are connected to the color temperature adjusting module respectively. In the embodiment, the color temperature of the first light-emitting component 81 is different from that of the second light-emitting component 82. The color temperature of the first light-emitting component 81 is 3000K, and the color temperature of the second light-emitting component 82 is 5000K, so that the first light-emitting component 81 emits yellow light and the second light-emitting component 82 emits white light.

[0054] In actual use, the input end of the first light-emitting component 81 and the input end of the second light-emitting component 82 receive the first power supply voltage output by the filter module 5, so that the first power supply voltage supplies power to the first light-emitting component 81 and the second light-emitting component 82. The color temperature adjusting module 9 is used to control the bright-dark state of the first light-emitting component 81 and the second light-emitting component 82, so that the first light-emitting component 81 and the second light-emitting component 82 adjust the color temperature of the light-emitting module 8 by changing the proportion of their own brightness.

[0055] Specifically, please continue to refer to Figure 3 , the color temperature adjusting module 9 comprises a control unit 91 and a switching unit 92. The control unit 91 has a V+ port and a V- port. The V+ port is an input port of an external power supply voltage, and the V- port is a negative connection port. The control unit 91 comprises a third voltage stabilizing component 911, a second voltage dividing component 912, a switching tube Q91, a third voltage dividing component 913 and a switching tube Q92. One end of the third voltage stabilizing component 911 is connected to the V+ port, and the other end is connected to the V- port. The second voltage dividing component 912 is connected in parallel across the third voltage stabilizing component 911, and the gate of the switching tube Q91 is connected to the second voltage dividing component 912. The drain of the switching tube Q91 is connected to the first light-emitting component 81, and the source of the switching tube Q91 is connected to the first voltage dividing component 53 and the V- port. One end of the second voltage dividing component 912 is connected to the first voltage dividing component 53, and the other end is connected to the V- port and the source of the switching tube Q91 respectively. The gate of the switching tube Q92 is connected to the third voltage dividing component 913, and the source of the switching tube Q92 is connected to the V- port. The drain of the switching tube Q2 is connected to the second light-emitting component 82.

[0056] The switch unit 92 comprises a first switch group 921, the first switch group 921 comprises a switch K1-A and a switch K1-C, one end of the switch K1-A is connected with one end of the switch K1-C, the other end of the switch K1-A is connected with a gate of a switch tube Q91, the other end of the switch K1-C is connected with a gate of a switch tube Q92.

[0057] In actual circuit use, the power supply voltage is input from a V+ port to the third voltage stabilizing component 911, the third voltage stabilizing component 911 stabilizes the input power supply, and provides a stable voltage for the switch tube Q91 and the switch tube Q92. It should be noted that the power supply voltage input from the V+ port is equal to the first power supply voltage. The second voltage dividing component 912 is used for voltage dividing of the input voltage of the gate of the switch tube Q91, so as to protect the switch tube Q91. The third voltage dividing component 913 is used for voltage dividing of the input voltage of the gate of the switch tube Q92, so as to protect the switch tube Q92. The switch tube Q91 is used for controlling the current size of the first light-emitting component 81, so as to control the lighting or extinguishing of the first light-emitting component 81. The switch tube Q92 is used for controlling the current size of the second light-emitting component 82, so as to control the lighting or extinguishing of the second light-emitting component 82. The switch K1-A is used for controlling the on and off states of the switch tube Q91, and the switch K1-C is used for controlling the on and off states of the switch tube Q92. By controlling the closing or opening states of the switch K1-A and the switch K1-C, the on and off states of the switch tube Q91 and the switch tube Q92 are controlled, so as to control the lighting or extinguishing of the first light-emitting component 81 and / or the second light-emitting component 82. When the first light-emitting component 81 is lighted and the second light-emitting component 82 is extinguished, the light-emitting module 8 emits yellow light; when the first light-emitting component 81 is extinguished and the second light-emitting component 82 is lighted, the light-emitting module 8 emits white light. When the first light-emitting component 81 and the second light-emitting component 82 are lighted simultaneously, the light-emitting module 8 emits mixed light color. In this way, by controlling the on and off of the switch K1-A and the switch K1-C, the color temperature switching of the light-emitting module 8 is realized. Further, the third voltage stabilizing component 911 comprises a resistor R90, a resistor R91, a triode Q90, a voltage stabilizing diode D90 and a capacitor C90, one end of the resistor R90 is connected with the V+ port, the other end of the resistor R90 is connected with the collector of the triode Q90, the base of the triode Q90 is connected with the negative electrode of the voltage stabilizing diode D90, the emitter of the triode Q90 is connected with the capacitor C90 and the first voltage dividing component 53 respectively, the positive electrode of the voltage stabilizing diode D90 is connected with the V+ port, the resistor R91 is connected with the resistor R90 in parallel, the other end of the capacitor C90 is connected with the positive electrode of the voltage stabilizing diode D90 and the first voltage dividing component 53 respectively.

[0058] The above merely describes the implementation manners of the present application, and is not intended to limit the present application. The present application can be changed and modified in various ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A high voltage lighting lamp driving circuit, characterized by comprising: The application relates to a power supply device, which comprises an EMC module (1), a rectifier module (2), a transformer module (3), a driving module (4), a filter module (5), a voltage reduction module (6) and a feedback module (7). The feedback module (7) comprises an optoelectronic coupler U5, a linear amplifier U3 and a constant current and constant voltage controller U2, the fourth end of the optoelectronic coupler U5 is connected with the driving module (4), the third end of the optoelectronic coupler U5 is grounded, the first end of the optoelectronic coupler U5 is connected with the positive input end of the linear amplifier U3 and the first pin of the constant current and constant voltage controller U2 respectively, the second end of the optoelectronic coupler U5 is connected with the third pin and the fourth pin of the constant current and constant voltage controller U2 respectively, the reverse input end of the linear amplifier U3 is connected with the voltage reduction module (6), the output end of the linear amplifier U3 and the ground end respectively, the output end of the linear amplifier U3 is connected with the filter module (5), the voltage reduction module (6) and the reverse input end of the linear amplifier U3 respectively, the second pin of the constant current and constant voltage controller U2 is connected with the ground end, the third pin of the constant current and constant voltage controller U2 is connected with the second end of the optoelectronic coupler U5, the fourth pin of the constant current and constant voltage controller U2 is connected with the output end of the linear amplifier U3, the second pin of the optoelectronic coupler U5 and the ground end respectively, the fifth pin of the constant current and constant voltage controller U2 is connected with the filter module (5) and the ground end respectively, the eighth pin and the seventh pin of the constant current and constant voltage controller U2 are connected with the ground end, and the sixth pin of the constant current and constant voltage controller U2 is used as a DIM+ port.

2. The high voltage lighting lamp driving circuit according to claim 1, characterized in that, The EMC module (1) comprises a coupling inductor L1, a capacitor CX2, a coupling inductor L2 and a capacitor CX3, the coupling inductor L1 is connected with the capacitor CX2 in parallel, the coupling inductor L2 is connected with the coupling inductor L2 in parallel, the capacitor CX2 is connected across the coupling inductor L2, and the two ends of the capacitor CX2 are connected with the input end of the rectifier module (2).

3. The high voltage lighting lamp driving circuit according to claim 1, wherein ​ 4. The high voltage lighting lamp driving circuit according to claim 1, characterized by The rectification module (2) comprises a rectification bridge (21) and a filter assembly (22), the input end of the rectification bridge (21) is connected with the output end of the EMC module (1), the output end of the rectification bridge (21) is connected with the input end of the filter assembly (22), and the output end of the filter assembly (22) is connected with the input end of the transformation module (3).

5. The high voltage lighting lamp driving circuit according to claim 1, wherein The transformation module (3) comprises an RC assembly (31) and a multi-stage transformer T1, the RC assembly (31) is connected with the output end of the rectification module (2), the primary side first winding of the multi-stage transformer T1 is connected with the RC assembly (31), the primary side first winding of the multi-stage transformer T1 is also connected with the driving module (4), the secondary side first winding of the multi-stage transformer T1 is connected with the input end of the filter module (5), and the secondary side second winding of the multi-stage transformer T1 is connected with the input end of the step-down module (6).

6. The high voltage lighting lamp driving circuit according to claim 2, wherein The driving module (4) comprises a driving chip U1 and a switch assembly (41), the driving chip U1 has first to eighth pins, the first pin of the driving chip U1 is connected with the transformation module (3), the second pin of the driving chip U1 is connected with the fourth end of the optoelectronic coupler U3 respectively, the third pin of the driving chip U1 is connected with the switch assembly (41), the fourth pin of the driving chip U1 is grounded, the fifth pin of the driving chip U1 is connected with the switch assembly (41), the sixth pin of the driving chip U1 is connected with the transformation module (3), the eighth pin of the driving chip U1 is connected with the EMC module (1), and the switch assembly (41) is also connected with the transformation module (3).

7. The high voltage lighting lamp driving circuit according to claim 1, wherein The filter module (5) comprises a first voltage stabilizing assembly (51), an energy storage assembly (52), a first voltage dividing assembly (53) and a coupling inductor L5, the input end of the first voltage stabilizing assembly (51) is connected with the first output end of the transformation module (3), the output end of the first voltage stabilizing assembly (51) is connected with the energy storage assembly (52), the first voltage dividing assembly (53) is connected with one end of the energy storage assembly (52), one end of the coupling inductor L5 is connected with the other end of the energy storage assembly (52), and the other end of the coupling inductor L5 is connected with the first voltage dividing assembly (53).

8. The high voltage lighting lamp driving circuit according to claim 2, wherein The step-down module (6) comprises a second voltage stabilizing assembly (61), a voltage stabilizing chip U6 and a voltage stabilizing chip U5, one end of the second voltage stabilizing assembly (61) is connected with the second output end of the transformation module (3), the other end of the second voltage stabilizing assembly (61) is connected with the input end of the voltage stabilizing chip U6, the output end of the voltage stabilizing chip U6 is connected with the inverting input end of the linear amplifier U3 and the output end of the linear amplifier U3 respectively, the input end of the voltage stabilizing chip U5 is connected with the second voltage stabilizing assembly (61), and the output end of the voltage stabilizing chip U5 outputs a second power supply voltage.

9. A high-voltage lighting lamp comprising the high-voltage lighting lamp driving circuit according to any one of claims 1-8, further comprising a light-emitting module (8) and a color temperature adjusting module (9), the light-emitting module (8) comprising a first light-emitting component (81) and a second light-emitting component (82), the input end of the first light-emitting component (81) and the input end of the second light-emitting component (82) being connected to the output end of the filter module (5), the output end of the first light-emitting component (81) and the output end of the second light-emitting component (82) being connected to the color temperature adjusting module (9) respectively.

10. The high intensity discharge lamp of claim 9, wherein, The color temperature adjusting module (9) comprises a control unit (91) and a switch unit (92), the control unit (91) having a V+ port and a V- port, the control unit (91) comprising a third voltage stabilizing component (911), a second voltage dividing component (912), a switch tube Q91, a third voltage dividing component (913) and a switch tube Q92; one end of the third voltage stabilizing component (911) being connected to the V+ port, the other end being connected to the V- port, the second voltage dividing component (912) being connected in parallel to the two ends of the third voltage stabilizing component (911), the gate of the switch tube Q91 being connected to the second voltage dividing component (912), the drain of the switch tube Q91 being connected to the first light-emitting component (81), the source of the switch tube Q91 being connected to the second voltage dividing component (912) and the V- port; one end of the third voltage dividing component (913) being connected to the second voltage dividing component (912), the other end of the third voltage dividing component (913) being connected to the V- port and the source of the switch tube Q91 respectively; the gate of the switch tube Q92 being connected to the third voltage dividing component (913), the source of the switch tube Q92 being connected to the V- port, the drain of the switch tube Q92 being connected to the second light-emitting component (82); the switch unit (92) comprising a first switch group (921), the first switch group (921) comprising a switch K1-A and a switch K1-C, one end of the switch K1-A being connected to one end of the switch K1-C, the other end of the switch K1-A being connected to the gate of the switch tube Q91, the other end of the switch K1-C being connected to the gate of the switch tube Q92.

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