Lighting device drive power supply capable of forming double closed loops

Abstract

To provide a lighting device drive power supply capable of forming double closed loops.SOLUTION: A lighting device driving power supply includes a rectifier module, first to third energy storage modules, and a switch module. The rectifier module is connected to a power grid, a first energy storage module is connected to the rectifier module, the second energy storage module is connected to the rectifier module, the first energy storage module, and the light source, the switch module is connected to the rectifier module and the first and second energy storage modules, and the third energy storage module is connected to the first and second energy storage modules, the switch module, and the light source. When the switch module is on, the rectifier module receives an input voltage and outputs a rectified voltage that drives the light source and charges the first to third energy storage modules. When the switch module is off, the first and second energy storage modules form a first closed loop, and the third energy storage module and the light source form a second closed loop.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a driving power supply, and more particularly to a driving power supply for a lighting device capable of forming a double closed loop. [Background technology]

[0002] Technological advances have significantly improved lighting equipment, leading to a growing market demand for lighting equipment with anti-strobe capabilities. While current low-power-factor drive power supplies can meet the strobe-free requirement for lighting products, they generate significant harmonics, potentially polluting the power grid and interfering with other devices. Drive power supplies with high power factor and anti-strobe capabilities can simultaneously achieve both strobe-free and high power factor, but they are less efficient and suffer from lighting fluctuations due to voltage fluctuations on the power grid. Drive power supplies with power factor correction and DC / DC conversion circuits can address these issues, but are expensive. Drive power supplies with valley-fill circuits can also address these issues, but their power factor cannot meet the requirements for wide-voltage applications. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting device driving power supply capable of forming a double closed loop. [Means for solving the problem]

[0004] According to one embodiment of the present invention, there is provided a power supply for driving a lighting device, capable of forming a double closed loop, including a rectifier module, a first energy storage module, a second energy storage module, a switch module, and a third energy storage module. The rectifier module is connected to a power grid. The first energy storage module is connected to the rectifier module. The second energy storage module is connected to the rectifier module, the first energy storage module, and a light source. The switch module is connected to the rectifier module, the first energy storage module, and the second energy storage module. The third energy storage module is connected to the first energy storage module, the second energy storage module, the switch module, and the light source. When the switch module is turned on, the rectifier module receives an input voltage from the power grid and outputs a rectified voltage to drive the light source and charge the first energy storage module, the second energy storage module, and the third energy storage module. When the switch module is turned off, the first energy storage module and the second energy storage module form a first closed loop, and the third energy storage module and the light source form a second closed loop.

[0005] In one embodiment, when the switch module is turned off, the first energy storage module is discharged to generate a first current, and the first current charges the second energy storage module, forming a first closed loop; the third energy storage module is discharged to generate a second current, and the second current forms a second closed loop through the light source.

[0006] In one embodiment, the first energy storage module includes a first inductor.

[0007] In one embodiment, the second energy storage module includes a first capacitor.

[0008] In one embodiment, the third energy storage module includes a second inductor.

[0009] In one embodiment, the light source is a light emitting diode, a light emitting diode array, or other similar component.

[0010] In one embodiment, the lighting device driving power supply further includes a voltage stabilization module, which is connected in parallel with the light source.

[0011] In one embodiment, the voltage stabilization module includes a second capacitor.

[0012] In one embodiment, the switch module is a gold oxide field effect transistor, triode, or other similar component.

[0013] In one embodiment, the rectifier module is a bridge rectifier. [Effects of the Invention]

[0014] Based on the above, the lighting device driving power supply capable of forming a double closed loop disclosed in the present invention can have one or more of the following advantages. (1) In one embodiment of the present invention, a lighting device driving power supply includes a rectifier module, a first energy storage module, a second energy storage module, a switch module, and a third energy storage module. The rectifier module is connected to a power grid. The first energy storage module is connected to the rectifier module. The second energy storage module is connected to the rectifier module, the first energy storage module, and the light source. The switch module is connected to the rectifier module, the first energy storage module, and the second energy storage module. The third energy storage module is connected to the first energy storage module, the second energy storage module, the switch module, and the light source. When the switch module is turned on, the rectifier module receives an input voltage from the power grid and outputs a rectified voltage to drive the light source and charge the first energy storage module, the second energy storage module, and the third energy storage module. When the switch module is turned off, the first energy storage module and the second energy storage module form a first closed loop, and the third energy storage module and the light source form a second closed loop. The above-mentioned double closed loop formation mechanism allows the lighting device driving power supply to charge the second energy storage module through the first closed loop when the switch module is turned off, and to drive the light source through the second closed loop. In this way, the rectifier module can remain conductive even when the switch module is turned off, and the lighting device driving power supply can still achieve a high power factor. At the same time, the above mechanism can effectively prevent the increase of harmonic current and pollution of the power grid. (2) In one embodiment of the present invention, the lighting device driving power supply can charge the second energy storage module through the first closed loop when the switch module is turned off, so that the second energy storage module can effectively prevent voltage surges caused by sudden changes in the input voltage. In this way, the lighting device driving power supply can effectively prevent the light source from strobe-causing voltage surges. Therefore, the lighting device driving power supply can provide a strobe elimination function and achieve high efficiency of the lighting device driving power supply. (3) In one embodiment of the present invention, the lighting device driving power supply can charge the second energy storage module through the first closed loop when the switch module is turned off, so that the second energy storage module can effectively prevent voltage surges caused by sudden changes in the input voltage. In this way, the lighting device driving power supply can meet the requirements for a wide voltage input, thereby broadening the applications of the lighting device driving power supply and meeting the requirements of various applications. (4) In one embodiment of the present invention, the lighting device driving power supply can be realized with a simple circuit design, without the need for costly controllers or special circuit components. In this way, the lighting device driving power supply can significantly reduce costs and achieve excellent efficiency. Therefore, the lighting device driving power supply can meet the requirements of practical applications. (5) In one embodiment of the present invention, the lighting device driving power supply is designed simply, so that the desired effect can be achieved while keeping costs down, and the lighting device driving power supply can achieve high practicality, meet the requirements of different users, and adapt to future development trends. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a block diagram of a lighting device driving power supply capable of forming a double closed loop according to an embodiment of the present invention. [Figure 2] 1 is a circuit diagram of a lighting device driving power supply capable of forming a double closed loop according to an embodiment of the present invention. [Figure 3] FIG. 1 is a first explanatory diagram illustrating an operating state of a lighting device driving power supply capable of forming a double closed loop according to an embodiment of the present invention. [Figure 4] FIG. 2 is a second explanatory diagram illustrating an operating state of the lighting device driving power supply capable of forming a double closed loop according to one embodiment of the present invention. [Figure 5] FIG. 10 is a block diagram of a circuit structure of a lighting device driving power supply capable of forming a double closed loop according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] In the following embodiments, detailed features and advantages of the present invention are described, the contents of which are sufficient to enable those skilled in the art to understand the technical contents of the present invention and implement them accordingly, and the disclosure contents, claims and drawings of this specification allow those skilled in the art to easily understand the objectives and advantages of the present invention.

[0017] Hereinafter, with reference to the related drawings, an embodiment of a lighting device driving power supply capable of forming a double closed loop of the present invention will be described. However, for clarity and ease of description in the drawings, the dimensions and proportions of each component in the drawings may be exaggerated or reduced. In the following description and / or claims, when a component is described as being "connected" or "coupled" to another component, this may be directly connected or coupled to the other component, or an intervening component may be present. When a component is described as being "directly connected" or "directly coupled" to another component, this does not mean that an intervening component is present, and other terms describing the relationship between components or layers should be interpreted similarly. For ease of understanding, the same components in the following embodiments will be denoted and described with the same reference numerals.

[0018] 1 is a block diagram of a lighting device driving power supply capable of forming a double closed loop according to one embodiment of the present invention. As shown in the figure, the lighting device driving power supply 1 includes a rectifier module 10, a first energy storage module 11, a second energy storage module 12, a switch module 14, and a third energy storage module 13.

[0019] The rectifier module 10 is connected to a power grid PS. In one embodiment, the rectifier module 10 is a bridge rectifier, such as a full-wave rectifier, a half-wave rectifier, or other similar component. In one embodiment, the power grid PS may be a utility power source. In another embodiment, the power grid PS may be a generator or other power source capable of generating an AC input voltage.

[0020] The first energy storage module 11 is connected to the rectifier module 10. In one embodiment, the first energy storage module 11 may include an inductor. In another embodiment, the first energy storage module 11 may include a capacitor or other component having an energy storage function.

[0021] The second energy storage module 12 is connected to the rectifier module 10, the first energy storage module 11, and the light source LS. In one embodiment, the second energy storage module 12 may include a capacitor. In another embodiment, the second energy storage module 12 may include an inductor or other component with energy storage functionality. In one embodiment, the light source LS includes one or more light emitting diodes (LEDs). In another embodiment, the light source LS may include one or more light emitting diode arrays.

[0022] The switch module 14 is connected to the rectifier module 10, the first energy storage module 11, and the second energy storage module 12. In one embodiment, the switch module 14 is a metal oxide semiconductor field effect transistor (MOSFET). In another embodiment, the switch module 14 may be a biased junction transistor (BJT) or other similar component.

[0023] The third energy storage module 13 is connected to the first energy storage module 11, the second energy storage module 12, the switch module 14, and the light source LS. In one embodiment, the third energy storage module 13 may include an inductor. In another embodiment, the third energy storage module 13 may include a capacitor or other component having an energy storage function.

[0024] When the switch module 14 is turned on, the rectifier module 10 charges the first energy storage module 11 , the second energy storage module 12 and the third energy storage module 13 .

[0025] When the switch module 14 is turned off, the first energy storage module 11 and the second energy storage module 12 form a first closed loop, and the third energy storage module 13 and the light source LS form a second closed loop, where the first energy storage module 11 discharges to generate a first current, which charges the second energy storage module 12 to form the first closed loop, and the third energy storage module 13 discharges to generate a second current, which passes through the light source LS to form the second closed loop.

[0026] By using the above-described double closed loop mechanism, when the switch module 14 is turned off, the lighting device driving power supply 1 can charge the second energy storage module 12 through the first closed loop and drive the light source LS through the second closed loop. In this way, the rectifier module 10 can remain on even when the switch module 14 is turned off, and the lighting device driving power supply 1 can still achieve a high power factor. At the same time, the above mechanism can also effectively prevent harmonic current from increasing and polluting the power grid.

[0027] Furthermore, since the lighting device driving power supply 1 can charge the second energy storage module 12 through the first closed loop when the switch module 14 is turned off, the second energy storage module 12 can effectively prevent voltage surges caused by sudden changes in the input voltage. This allows the lighting device driving power supply 1 to effectively prevent the light source LS from stroking due to voltage surges. Therefore, the lighting device driving power supply 1 can be equipped with a strobe elimination function, and the efficiency of the lighting device driving power supply 1 can be improved.

[0028] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the lighting device driving power supply capable of forming a double closed loop of this embodiment should still fall within the scope of protection of the present invention.

[0029] Please refer to Figures 2, 3, and 4. Figure 2 is a circuit diagram of a lighting device driving power supply capable of forming a double closed loop according to one embodiment of the present invention. Figures 3 and 4 are first and second explanatory diagrams of the operating state of a lighting device driving power supply capable of forming a double closed loop according to one embodiment of the present invention. Figure 2 illustrates a possible circuit design of the lighting device driving power supply 1, but the circuit design of the lighting device driving power supply 1 can be changed according to actual needs, and the present invention is not limited thereto. As shown in Figure 2, the lighting device driving power supply 1 includes a first terminal P1, a second terminal P2, a rectifier module 10, a first energy storage module 11, a second energy storage module 12, a switch module 14, and a third energy storage module 13.

[0030] The first terminal P1 and the second terminal P2 are connected to the power grid. The rectifier module 10 is a full-wave rectifier BD. Two input terminals of the full-wave rectifier BD are connected to the first terminal P1 and the second terminal P2, respectively, and two output terminals of the full-wave rectifier BD are connected to the first node N1 and the second node N2, respectively.

[0031] The first energy storage module 11 is connected to the rectifier module 10. The first energy storage module 11 includes a first inductor L1 and a first diode D1. The positive electrode of the first diode D1 is connected to a first node N1, and the negative electrode of the first diode D1 is connected to one end of the first inductor L1. The other end of the first inductor L1 is connected to a third node N3.

[0032] The second energy storage module 12 is connected to the rectifier module 10, the first energy storage module 11, and the light source LS. The second energy storage module 12 includes a first capacitor C1 and a second diode D2. The positive electrode of the second diode D2 is connected to the first node N1, and the negative electrode of the second diode D2 is connected to one end of the first capacitor C1 and a fourth node N4. The other end of the first capacitor C1 is connected to the second node N1.

[0033] The switch module 14 is connected to the rectifier module 10, the first energy storage module 11, and the second energy storage module 12. The switch module 14 is a transistor M1 (metal oxide semiconductor field effect transistor). The source of the transistor M1 is connected to the second node N2, and the drain of the transistor M1 is connected to the third node N3.

[0034] The third energy storage module 13 is connected to the first energy storage module 11, the second energy storage module 12, the switch module 14, and the light source LS. The third energy storage module 13 includes a second inductor L2 and a third diode D3. The negative electrode of the third diode D3 is connected to the fourth node N4, and the positive electrode of the third diode D3 is connected to the third node N3 and one end of the second inductor L2.

[0035] The light source LS includes a light emitting diode LD. The positive electrode of the light emitting diode LD is connected to the fourth node N4, and the negative electrode of the light emitting diode LD is connected to the other end of the second inductor L2.

[0036] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the lighting device driving power supply capable of forming a double closed loop of this embodiment should still fall within the scope of protection of the present invention.

[0037] As shown in Figure 3, the rectifier module 10 receives an input voltage from the power grid, outputs a rectified voltage, and generates a driving current for driving the light source LD. When the transistor M1 is turned on, the driving current flows through the second diode D2, the light-emitting diode LD, the second inductor L2, the transistor M1, and the full-wave rectifier BD back to the power grid. At the same time, the second inductor L2 stores energy due to the driving current. The direction of the current is indicated by the arrow A1 in the figure.

[0038] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the lighting device driving power supply capable of forming a double closed loop of this embodiment should still fall within the scope of protection of the present invention.

[0039] As shown in Figure 4, when transistor M1 is turned off, first inductor L1 discharges to generate a first current, which charges first capacitor C1, forming a first closed loop. The direction of the current is indicated by arrow A2 in the figure. The voltage across first capacitor C1 does not change suddenly, preventing light-emitting diode LD from strobe-causing voltage surges and providing a strobe suppression function. The first closed loop maintains full-wave rectifier BD in an on state, ensuring current continuity, achieving a high power factor and preventing harmonic current buildup.

[0040] The second inductor L2 discharges to generate a second current, which flows through the light-emitting diode LD to form a second closed loop and drive the light-emitting diode LD. The direction of the current is indicated by an arrow A3 in the figure.

[0041] By using the above-described double closed loop mechanism, when the switch module 14 is turned off, the lighting device driving power supply 1 can charge the second energy storage module 12 through the first closed loop and drive the light source LS through the second closed loop. In this way, the rectifier module 10 can remain on even when the switch module 14 is turned off, and the lighting device driving power supply 1 can still achieve a high power factor. At the same time, the above mechanism can also effectively prevent harmonic current from increasing and polluting the power grid.

[0042] Furthermore, since the lighting device driving power supply 1 can charge the second energy storage module 12 through the first closed loop when the switch module 14 is turned off, the second energy storage module 12 can effectively prevent voltage surges caused by sudden changes in the input voltage. This allows the lighting device driving power supply 1 to effectively prevent the light source LS from stroking due to voltage surges. Therefore, the lighting device driving power supply 1 can be equipped with a strobe elimination function, and the efficiency of the lighting device driving power supply 1 can be improved.

[0043] Furthermore, when the switch module 14 is turned off, the lighting device driving power supply 1 can charge the second energy storage module 12 through the first closed loop, so that the second energy storage module 12 can effectively prevent voltage surges caused by sudden changes in the input voltage. In this way, the lighting device driving power supply 1 can meet the requirements for a wide input voltage, thereby broadening the applications of the lighting device driving power supply 1 and meeting the requirements of various applications.

[0044] As can be seen from the above, the lighting device driving power supply 1 can be realized with a simple circuit design and does not require expensive controllers or special circuit components. In this way, the lighting device driving power supply 1 can significantly reduce costs and achieve excellent efficiency. Therefore, the lighting device driving power supply 1 can meet the requirements of practical applications.

[0045] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the lighting device driving power supply capable of forming a double closed loop of this embodiment should still fall within the scope of protection of the present invention.

[0046] While current low-power-factor drive power supplies can meet the strobe-free requirement for lighting products, they generate significant harmonics, potentially polluting the power grid and interfering with other devices. Drive power supplies with high power factor and anti-strobe functions can simultaneously achieve both strobe-free and high power factor, but they are less efficient and subject lighting to voltage fluctuations on the power grid. Drive power supplies with power factor correction circuits and DC / DC conversion circuits can solve these problems but are expensive. Drive power supplies with valley fill circuits can also solve these problems, but their power factor in wide-voltage applications cannot meet the requirements. In contrast, according to an embodiment of the present invention, a lighting device drive power supply includes a rectifier module, a first energy storage module, a second energy storage module, a switch module, and a third energy storage module. The rectifier module is connected to the power grid. The first energy storage module is connected to the rectifier module. The second energy storage module is connected to the rectifier module, the first energy storage module, and the light source. The switch module is connected to the rectifier module, the first energy storage module, and the second energy storage module. The third energy storage module is connected to the first energy storage module, the second energy storage module, the switch module, and the light source. When the switch module is turned on, the rectifier module receives the input voltage from the power grid and outputs a rectified voltage to drive the light source and charge the first energy storage module, the second energy storage module, and the third energy storage module. When the switch module is turned off, the first energy storage module and the second energy storage module form a first closed loop, and the third energy storage module and the light source form a second closed loop. With this double closed loop formation mechanism, when the switch module is turned off, the lighting device driving power supply can charge the second energy storage module through the first closed loop and drive the light source through the second closed loop. In this way, the rectifier module can remain conductive even when the switch module is turned off, and the lighting device driving power supply can still achieve a high power factor.At the same time, the above mechanism can also effectively prevent the increase of harmonic current and the pollution of the power grid.

[0047] Furthermore, according to an embodiment of the present invention, the lighting device driving power supply can charge the second energy storage module through the first closed loop when the switch module is turned off, so that the second energy storage module can effectively prevent voltage surges caused by sudden changes in the input voltage. In this way, the lighting device driving power supply can effectively prevent the light source from strobe-causing voltage surges. Therefore, the lighting device driving power supply can provide a strobe elimination function and achieve high efficiency of the lighting device driving power supply.

[0048] Furthermore, according to an embodiment of the present invention, the lighting device driving power supply can charge the second energy storage module through the first closed loop when the switch module is turned off, so that the second energy storage module can effectively prevent voltage surges caused by sudden changes in the input voltage. In this way, the lighting device driving power supply can meet the requirements for a wide voltage input, thereby broadening the applications of the lighting device driving power supply and meeting the requirements of various applications.

[0049] Furthermore, according to the embodiment of the present invention, the lighting device driving power supply can be realized with a simple circuit design, without requiring expensive controllers or special circuit components. In this way, the lighting device driving power supply can significantly reduce costs and achieve excellent efficiency. Therefore, the lighting device driving power supply can meet the requirements of practical applications.

[0050] Furthermore, according to the embodiment of the present invention, the design of the lighting device driving power supply is simple, so that the desired effect can be achieved while keeping costs down. Therefore, the lighting device driving power supply can achieve high practicality, meet the requirements of different users, and adapt to future development trends. From the above, it can be seen that the lighting device driving power supply capable of forming a double closed loop according to the embodiment of the present invention can indeed achieve excellent technical effects.

[0051]

[0023] Figure 5 is a block diagram of a circuit structure of a lighting device driving power supply capable of forming a double closed loop according to another embodiment of the present invention. Figure 5 shows another possible circuit design for the lighting device driving power supply 1, but the circuit design of the lighting device driving power supply 1 can be modified according to actual needs and is not limited thereto. As shown in the figure, the lighting device driving power supply 1 includes a first terminal P1, a second terminal P2, a rectifier module 10, a first energy storage module 11, a second energy storage module 12, a switch module 14, and a third energy storage module 13.

[0052] The first terminal P1 and the second terminal P2 are connected to the power grid. The rectifier module 10 is a full-wave rectifier BD. Two input terminals of the full-wave rectifier BD are connected to the first terminal P1 and the second terminal P2, respectively, and two output terminals of the full-wave rectifier BD are connected to the first node N1 and the second node N2, respectively.

[0053] The first energy storage module 11 is connected to the rectifier module 10. The first energy storage module 11 includes a first inductor L1 and a first diode D1. The positive electrode of the first diode D1 is connected to a first node N1, and the negative electrode of the first diode D1 is connected to one end of the first inductor L1. The other end of the first inductor L1 is connected to a third node N3.

[0054] The second energy storage module 12 is connected to the rectifier module 10, the first energy storage module 11, and the light source LS. The second energy storage module 12 includes a first capacitor C1 and a second diode D2. The positive electrode of the second diode D2 is connected to the first node N1, and the negative electrode of the second diode D2 is connected to one end of the first capacitor C1 and a fourth node N4. The other end of the first capacitor C1 is connected to the second node N1.

[0055] The switch module 14 is connected to the rectifier module 10, the first energy storage module 11, and the second energy storage module 12. The switch module 14 is a transistor M1 (metal oxide semiconductor field effect transistor). The source of the transistor M1 is connected to the second node N2, and the drain of the transistor M1 is connected to the third node N3.

[0056] The third energy storage module 13 is connected to the first energy storage module 11, the second energy storage module 12, the switch module 14, and the light source LS. The third energy storage module 13 includes a second inductor L2 and a third diode D3. The negative electrode of the third diode D3 is connected to the fourth node N4, and the positive electrode of the third diode D3 is connected to the third node N3 and one end of the second inductor L2.

[0057] The light source LS includes a light emitting diode LD. The positive electrode of the light emitting diode LD is connected to the fourth node N4, and the negative electrode of the light emitting diode LD is connected to the other end of the second inductor L2.

[0058] The above components are similar to those of the previous embodiment, and therefore will not be described in detail here. The difference from the previous embodiment is that the lighting device driving power supply 1 of this embodiment further includes a voltage stabilizing module 15. The voltage stabilizing module 15 is connected in parallel with the light source LS. The voltage stabilizing module 15 includes a second capacitor C2. The voltage stabilizing module 15 achieves a voltage stabilizing effect, thereby improving the performance of the lighting device driving power supply 1.

[0059] Similarly, when the switch module 14 is turned on, the rectifier module 10 charges the first energy storage module 11, the second energy storage module 12 and the third energy storage module 13.

[0060] When the switch module 14 is turned off, the first energy storage module 11 and the second energy storage module 12 form a first closed loop, and the third energy storage module 13 and the light source LS form a second closed loop, where the first energy storage module 11 discharges to generate a first current, which charges the second energy storage module 12 to form the first closed loop, and the third energy storage module 13 discharges to generate a second current, which passes through the light source LS to form the second closed loop.

[0061] Of course, this embodiment is only used for illustrative purposes and does not limit the scope of the present invention, and any equivalent modifications or alterations made based on the lighting device driving power supply capable of forming a double closed loop of this embodiment should still fall within the scope of protection of the present invention.

[0062] In summary, according to an embodiment of the present invention, a lighting device driving power supply includes a rectifier module, a first energy storage module, a second energy storage module, a switch module, and a third energy storage module. The rectifier module is connected to a power grid. The first energy storage module is connected to the rectifier module. The second energy storage module is connected to the rectifier module, the first energy storage module, and the light source. The switch module is connected to the rectifier module, the first energy storage module, and the second energy storage module. The third energy storage module is connected to the first energy storage module, the second energy storage module, the switch module, and the light source. When the switch module is turned on, the rectifier module receives an input voltage from the power grid and outputs a rectified voltage to drive the light source and charge the first energy storage module, the second energy storage module, and the third energy storage module. When the switch module is turned off, the first energy storage module and the second energy storage module form a first closed loop, and the third energy storage module and the light source form a second closed loop. The above-mentioned double closed loop formation mechanism allows the lighting device driving power supply to charge the second energy storage module through the first closed loop when the switch module is turned off, and to drive the light source through the second closed loop. In this way, the rectifier module can remain conductive even when the switch module is turned off, and the lighting device driving power supply can still achieve a high power factor. At the same time, the above mechanism can effectively prevent the increase of harmonic current and pollution of the power grid.

[0063] Furthermore, according to an embodiment of the present invention, the lighting device driving power supply can charge the second energy storage module through the first closed loop when the switch module is turned off, so that the second energy storage module can effectively prevent voltage surges caused by sudden changes in the input voltage. In this way, the lighting device driving power supply can effectively prevent the light source from strobe-causing voltage surges. Therefore, the lighting device driving power supply can provide a strobe elimination function and achieve high efficiency of the lighting device driving power supply.

[0064] Furthermore, according to an embodiment of the present invention, the lighting device driving power supply can charge the second energy storage module through the first closed loop when the switch module is turned off, so that the second energy storage module can effectively prevent voltage surges caused by sudden changes in the input voltage. In this way, the lighting device driving power supply can meet the requirements for a wide voltage input, thereby broadening the applications of the lighting device driving power supply and meeting the requirements of various applications.

[0065] Furthermore, according to the embodiment of the present invention, the lighting device driving power supply can be realized with a simple circuit design, without requiring expensive controllers or special circuit components. In this way, the lighting device driving power supply can significantly reduce costs and achieve excellent efficiency. Therefore, the lighting device driving power supply can meet the requirements of practical applications.

[0066] Furthermore, according to the embodiment of the present invention, the design of the lighting device driving power supply is simple, so that the desired effect can be achieved while keeping costs down, and therefore the lighting device driving power supply can achieve high practicality, meet the requirements of different users, and adapt to future development trends.

[0067] Although the above embodiments are described in this specification, it should be noted that they do not limit the scope of the claims of the present invention. Therefore, any changes and modifications to the embodiments described in this specification based on the innovative concept of the present invention, or the replacement of equivalent structures or equivalent processes made using the contents of the specification and drawings of the present invention, or the direct or indirect application of the above technical solutions to other related technical fields, are all within the scope of the claims of the present invention. [Explanation of symbols]

[0068] 1. Lighting device drive power supply 10 Rectification Module 11 First energy storage module 12 Second Energy Storage Module 13 Third Energy Storage Module 14 Switch Module 15 Voltage Stabilization Module PS power grid LS light source P1 1st terminal P2 2nd terminal BD full wave rectifier L1 First inductor D1 First diode C1 First capacitor D2 Second diode M1 transistor L2 Second inductor D3 Third diode LD Light Emitting Diode C2 capacitor N1 First node N2 Second node N3 Third node N4 4th node A1 Arrow A2 Arrow A3 Arrow

Claims

1. a rectification module connected to a power grid; a first energy storage module connected to the rectification module; a second energy storage module connected to the rectification module, the first energy storage module, and a light source; a switch module connected to the rectifier module, the first energy storage module, and the second energy storage module; a third energy storage module connected to the first energy storage module, the second energy storage module, the switch module, and the light source; Including, When the switch module is turned on, the rectifier module receives an input voltage from the power grid and outputs a rectified voltage to drive the light source, thereby charging the first energy storage module, the second energy storage module, and the third energy storage module; when the switch module is turned off, the first energy storage module and the second energy storage module form a first closed loop, and the third energy storage module and the light source form a second closed loop.

2. 2. The power supply for driving a lighting device capable of forming double closed loops according to claim 1, wherein when the switch module is turned off, the first energy storage module is discharged to generate a first current, and the first current charges the second energy storage module, thereby forming the first closed loop; and the third energy storage module is discharged to generate a second current, and the second current forms a second closed loop through the light source.

3. The lighting device driving power supply capable of forming a double closed loop according to claim 1 , wherein the first energy storage module includes a first inductor.

4. The lighting device driving power supply capable of forming a double closed loop according to claim 1 , wherein the second energy storage module includes a first capacitor.

5. The lighting device driving power supply capable of forming a double closed loop according to claim 1 , wherein the third energy storage module includes a second inductor.

6. 2. The lighting device driving power supply capable of forming a double closed loop according to claim 1, wherein the light source is a light emitting diode or a light emitting diode array.

7. The lighting device driving power supply capable of forming a double closed loop according to claim 1 , further comprising a voltage stabilizing module, the voltage stabilizing module being connected in parallel with the light source.

8. The lighting device driving power supply device capable of forming a double closed loop according to claim 7 , wherein the voltage stabilizing module includes a second capacitor.

9. 2. The lighting device driving power supply capable of forming a double closed loop according to claim 1, wherein the switch module is a gold oxide field effect transistor or a triode.

10. The lighting device driving power supply capable of forming a double closed loop as claimed in claim 1 , wherein the rectifier module is a bridge rectifier.

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