CN214674857U

CN214674857U - High-power LED power supply

Info

Publication number: CN214674857U
Application number: CN202120827477.2U
Authority: CN
Inventors: 邱明; 金宇星; 陈津仪; 冯伟
Original assignee: Lumlux Corp
Current assignee: Lumlux Corp
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-11-09
Anticipated expiration: 2031-04-21

Abstract

The embodiment of the utility model discloses high-power LED power. The LED power supply comprises a power supply shell and a PCB circuit board arranged inside the power supply shell. The PCB circuit board includes the first printed area who arranges in proper order along the first direction, the second printed area, third printed area and fourth printed area, be provided with lightning protection filter module on the first printed area, be provided with power factor correction module on the second printed area, be provided with resonance module on the third printed area, fourth printed area is provided with output module, lightning protection filter module, power factor correction module, resonance module and output module electricity are connected in proper order, through arranging four modules in proper order according to the topological overall arrangement of circuit and realizing the design that does not have the return circuit between each module, make the wiring overall arrangement on the PCB circuit board rationalize, electromagnetic signal's mutual interference between each module has been avoided, EMI phenomenon has effectively been improved, and the high reliability of LED power has been realized to the heat dissipation of utilizing the power shell.

Description

High-power LED power supply

Technical Field

The embodiment of the utility model provides a relate to power technical field, especially relate to a high-power LED power.

Background

With the rapid progress of modern science and technology and the rapid development of economic level, people have increasingly greater demands on the LED power supply and higher functional requirements on the LED power supply. Meanwhile, with the acceleration of life rhythm, people have higher and higher response speed to the LED power supply, so that the LED power supply is more and more, the electromagnetic wave generated by the high-frequency electronic element can harm the body of people, and in use, the high-frequency electronic element can generate a large amount of electromagnetic waves on the printed circuit board, and the electromagnetic waves influence the adjacent printed circuit board to generate induction current through electromagnetic interference among the board layers, namely, the electromagnetic waves can interfere with each other during working.

The conventional LED power supply has the characteristics of width and thickness, the PCB layout and wiring of the power supply circuit are complex, and when induced current is generated among all board layers through electromagnetic interference, the electromagnetic interference among high frequencies cannot be effectively reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a high-power LED power realizes the reasonable characteristics of wiring between the PCB circuit board, can effectively reduce the electromagnetic interference on the circuit board.

In a first aspect, an embodiment of the present invention provides a high-power LED power supply, including a power supply housing and a PCB circuit board disposed inside the power supply housing;

the PCB comprises a first printing area, a second printing area, a third printing area and a fourth printing area which are sequentially arranged along a first direction, wherein the first printing area is provided with a lightning protection filtering module, the second printing area is provided with a power factor correction module, the third printing area is provided with a resonance module, and the fourth printing area is provided with an output module;

the lightning protection filtering module, the power factor correction module, the resonance module and the output module are electrically connected in sequence.

Optionally, the lightning protection filter module includes an input port, a first voltage dependent resistor, a first filter capacitor, a first filter inductor, a second filter capacitor, a relay, a second filter inductor, a third filter capacitor, a first rectifying and filtering bridge, a second rectifying and filtering bridge, a fourth filter capacitor, a second voltage dependent resistor, a third voltage dependent resistor, a fourth voltage dependent resistor, and a first discharge tube;

the input port, the first filter inductor, the second filter capacitor, the second filter inductor and the third filter capacitor are sequentially arranged along a second direction, and the second direction is perpendicular to the first direction;

in the first direction, the first piezoresistor and the first filter capacitor are sequentially arranged on the second side of the input port, the first discharge tube and the relay are respectively located on the first side and the second side of the second filter capacitor, the second piezoresistor and the third piezoresistor are both located on the first side of the second filter inductor, the fourth piezoresistor is located on the first side of the third filter capacitor, and the second piezoresistor, the third piezoresistor and the fourth piezoresistor are sequentially arranged along the second direction;

the first rectifying and filtering bridge and the second rectifying and filtering bridge are arranged along the first direction and are positioned on one side of the third filtering capacitor, which deviates from the second filtering inductor, in the second direction; the fourth filter capacitor is positioned on the second side of the second rectifying filter bridge and the third filter capacitor in the first direction.

Optionally, the power factor correction module comprises a power factor correction device, a first power factor correction inductor, a second power factor correction inductor, a first electrolysis module and a first auxiliary power supply module;

the first power factor correction inductor, the second power factor correction inductor and the first electrolysis module are sequentially arranged along the first direction, the power factor correction device is positioned on the first side of the first power factor correction inductor and the first side of the second power factor correction inductor in the second direction, and the first auxiliary power supply module is positioned on the second side of the second power factor correction inductor and the second side of the first electrolysis module in the second direction.

Optionally, the resonant module includes a resonant half-bridge circuit, a first resonant inductor, a second resonant inductor, a first resonant capacitor, a second resonant capacitor, a third resonant capacitor, and a synchronous rectification circuit;

the first resonance capacitor, the second resonance capacitor and the third resonance capacitor are sequentially arranged in the first direction, the first resonance inductor and the second resonance inductor are sequentially arranged in the second direction, the first resonance capacitor, the second resonance capacitor and the third resonance capacitor are located on the first side of the second resonance inductor in the first direction, the resonance half-bridge circuit is located on the first side of the first resonance inductor in the first direction, and the synchronous rectification circuit is located on the second side of the first resonance inductor in the first direction.

Optionally, the output module includes a first filtering electrolytic capacitor, a second filtering electrolytic capacitor, a third filtering electrolytic capacitor, a fourth filtering electrolytic capacitor, a fifth filtering electrolytic capacitor, a sixth filtering electrolytic capacitor, a seventh filtering electrolytic capacitor, an eighth filtering electrolytic capacitor, a third filtering inductor, a ninth filtering capacitor, and an output port;

wherein the first filtering electrolytic capacitor, the second filtering electrolytic capacitor, the third filtering electrolytic capacitor, the fourth filtering electrolytic capacitor, the fifth filtering electrolytic capacitor, the sixth filtering electrolytic capacitor, the seventh filtering electrolytic capacitor and the eighth filtering electrolytic capacitor are located on a first side of the third filtering inductor in the second direction, the ninth filtering capacitor and the output port are located on a second side of the third filtering inductor in the second direction, and the output port is located on a second side of the ninth filtering capacitor in the first direction.

Optionally, the first rectifying bridge and the second rectifying bridge in the lightning protection filter module are both electrically connected to the first power factor correction inductor in the power factor correction module.

Optionally, the first electrolysis module in the power factor correction module is electrically connected to the first resonant capacitor, the second resonant capacitor and the third resonant capacitor on the resonant module, respectively;

in a second orientation, the resonant half-bridge circuit is located on a first side of the first electrolysis module, and the first, second and third resonant capacitors are located on a second side of the first electrolysis module.

Optionally, the input port is located on a first surface of the PCB, and the first rectifying and filtering bridge and the second rectifying and filtering bridge are located on a second surface of the PCB, the second surface facing away from the first surface;

the power factor correction device, the resonance half-bridge circuit and the synchronous rectification circuit are all positioned on the second surface of the PCB.

Optionally, the heights of all components in the lightning protection filter module, the power factor correction module, the resonance module, and the output module on the PCB are less than or equal to 30mm, and the width of the PCB along the second direction is less than or equal to 80 mm.

Optionally, the power of the LED power supply is between 1000W-15000W.

The utility model provides a LED power, include power shell and set up in the inside PCB circuit board of power shell. The PCB circuit board comprises a first printing area, a second printing area, a third printing area and a fourth printing area which are sequentially arranged along a first direction, wherein a lightning protection filter module is arranged on the first printing area, a power factor correction module is arranged on the second printing area, a resonance module is arranged on the third printing area, an output module is arranged on the fourth printing area, and the lightning protection filter module, the power factor correction module, the resonance module and the output module are sequentially and electrically connected, in the embodiment, the lightning protection filter module, the power factor correction module, the resonance module and the output module are sequentially arranged along the first direction according to the layout of circuit topology, so that the design that no return circuit exists among the modules is realized, the wiring layout on the PCB is rationalized, the mutual interference of electromagnetic signals among modules is avoided, the EMI phenomenon is effectively improved, and the high reliability of the LED power supply is realized.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic structural diagram of a high-power LED power supply according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a PCB circuit board according to an embodiment of the present invention;

fig. 3 is a schematic diagram of another PCB circuit board according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following describes in detail specific embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

In addition, it should be noted that, in order to further explain the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments for the specific implementation, structure, features and effects of a high power LED power supply according to the present invention.

Fig. 1 is a schematic structural diagram of a high-power LED power supply provided in an embodiment of the present invention. As shown in fig. 1, the LED power supply includes a power supply case 10 and a PCB circuit board 20 disposed inside the power supply case 10. Fig. 2 is a schematic structural diagram of a PCB circuit board according to an embodiment of the present invention. As shown in fig. 2, the PCB 20 includes a first printing area 201, a second printing area 202, a third printing area 203 and a fourth printing area 204 sequentially arranged along a first direction D1, the first printing area 201 is provided with a lightning protection filter module 210, the second printing area 202 is provided with a power factor correction module 220, the third printing area 203 is provided with a resonance module 230, the fourth printing area 204 is provided with an output module 240, and the lightning protection filter module 210, the power factor correction module 220, the resonance module 230 and the output module 240 are sequentially electrically connected.

Wherein, lightning protection filter module 210 provides lightning protection and electromagnetic compatibility function for the product, and Power Factor Correction (PFC) module 220 improves the Power supply utilization ratio when alternating current converts the direct current into, reduces the Power loss in the conversion process, and PFC module 220 can eliminate the Power and to the influence of other electrical apparatus when the sudden start-up for carry out Power Factor correction, convey again to similar constant voltage or constant current output module. A resonant module (Logical Link Control, LLC)230 is one of the main power level topologies of the LED power supply, and the output voltage is constant by controlling the frequency, and the working principle of the LLC module 230 in the circuit board also becomes the working principle of the resonant topology, and it has the advantages of realizing zero-voltage switching in a wide load range, being able to adjust the output under the condition of large-range changes of input voltage and load, and meanwhile, the switching frequency change is relatively small, the duty ratio of the upper and lower tubes is 50% when frequency Control is adopted, and no output inductance is needed.

Specifically, this PCB circuit board 20 of LED power is when concrete application, the embodiment of the utility model provides a lightning protection filter module 210 chooses for use the lightning protection device that the size is littleer, the performance is better, reduces the space under the prerequisite of guaranteeing the performance. In addition, the lightning protection filter module 210, the PFC module 220, the LLC module 230, and the output module 240 on the PCB 20 are arranged along the first direction D1 according to the layout of the circuit topology, and no return line exists between the modules in the first direction D1, so that Interference between the modules is avoided, and an electromagnetic Interference (EMI) phenomenon is improved.

It should be noted that the material of the power supply housing 10 may be an aluminum profile support. Considering that in the process of manufacturing the LED power supply, in order to simplify the glue filling process of the PCB 20 in the power supply housing 10, the thickness and width of the power supply housing 10 are designed according to the actual usage of the specific LED power supply under the condition of ensuring as thin and narrow as possible, and are not limited herein.

It should be noted that the specific operation principle of the PFC module and the LLC module is well known to those skilled in the art, and therefore, the specific operation process thereof is not described in detail in this embodiment.

The embodiment provides an LED power supply, which comprises a power supply shell and a PCB circuit board arranged in the power supply shell, wherein the PCB circuit board comprises a first printing area, a second printing area, a third printing area and a fourth printing area which are sequentially arranged along a first direction, the first printing area is provided with a lightning protection filter module, the second printing area is provided with a power factor correction module, the third printing area is provided with a resonance module, the fourth printing area is provided with an output module, and the lightning protection filter module, the power factor correction module, the resonance module and the output module are sequentially and electrically connected, the embodiment realizes the design without return circuits among the modules by sequentially arranging the lightning protection filter module, the power factor correction module, the resonance module and the output module along the first direction according to the layout of circuit topology, so that the layout on the PCB circuit board is rationalized, and mutual interference among the modules is avoided, effectively improving EMI phenomenon and realizing high reliability of the LED power supply.

Optionally, with continued reference to fig. 2, the lightning protection filter module 210 includes an input port 11, a first voltage dependent resistor 12, a first filter capacitor 13, a first filter inductor 10, a second filter capacitor 9, a relay 14, a second filter inductor 8, a third filter capacitor 7, a first rectifying filter bridge 5, a second rectifying filter bridge 6, a fourth filter capacitor 15, a second voltage dependent resistor 2, a third voltage dependent resistor 3, a fourth voltage dependent resistor 4, and a first discharge tube 1, wherein the input port 11, the first filter inductor 10, the second filter capacitor 9, the second filter inductor 8, and the third filter capacitor 7 are sequentially arranged along a second direction D2, the second direction D2 is perpendicular to the first direction D1, in the first direction D1, the first voltage dependent resistor 12 and the first filter capacitor 13 are sequentially arranged on a second side of the input port 11, the first discharge tube 1 and the relay 14 are respectively located on a first side and a second side of the second filter capacitor 9, the second voltage dependent resistor 2 and the third voltage dependent resistor 3 are both located on the first side of the second filter inductor 8, the fourth voltage dependent resistor 4 is located on the first side of the third filter capacitor 7, the second voltage dependent resistor 2, the third voltage dependent resistor 3 and the fourth voltage dependent resistor 4 are sequentially arranged along the second direction D2, the first rectifying filter bridge 5 and the second rectifying filter bridge 6 are arranged along the first direction D1, the third rectifying filter bridge 7 is located on the side, deviating from the second filter inductor 8, of the second filter capacitor 7 in the second direction D2, and the fourth filter capacitor 15 is located on the second side, deviating from the first filter inductor 8, of the second rectifying filter bridge 6 and the third filter capacitor 7 in the first direction D1.

Referring to fig. 2, the second side of the input port 11 is the right side of the input port 11 along the extending direction of the first direction D1, the first side and the second side of the second filter capacitor 9 are the left side and the right side of the second filter capacitor 9 in the first direction D1, the first side of the second filter inductor 8 is the left side of the second filter inductor 8 in the first direction D1, the first side of the third filter capacitor 7 is the left side of the third filter capacitor 7 in the first direction D1, and the second sides of the second rectifying filter bridge 6 and the third filter capacitor 7 in the first direction D1 are the right sides of the second rectifying filter bridge 6 and the third filter capacitor 7.

It should be noted that, on the PCB 20, a large amount of electromagnetic waves are generated by the high-frequency components on each printed area, and each printed area generates an induced current between the board layers by the electromagnetic interference affecting the adjacent printed areas, that is, the induced currents interfere with each other during operation.

In the lightning protection filter module 210, the second varistor 2 and the third varistor 3 are located on the first side of the second filter inductor 8, and the first discharge tube 1 is located on the first side of the second filter capacitor, and constitutes a lightning protection circuit to provide lightning protection.

Specifically, in the present embodiment, the first varistor 12, the second varistor 2, and the third varistor 3 are common mode varistors, and mainly function to absorb surge signals and protect the LED power supply from being damaged due to interference signals generated by lightning surge. The first filter inductor 10 and the second filter inductor 8 use a first-level common-mode inductor to replace a traditional two-level or three-level common-mode filter circuit, and meet the safety standard of radiation.

Optionally, with continued reference to fig. 2, the pfc module 220 includes a pfc device 18, a first pfc inductor 16, a second pfc inductor 17, a first power factor corrector module 20, and a first auxiliary power module 21, wherein the first pfc inductor 16, the second pfc inductor 17, and the first electrolyzer module 20 are sequentially arranged along a first direction D1, the pfc device 18 is located on a first side of the first pfc inductor 16 and the second pfc inductor 17 in a second direction D2, and the first auxiliary power module 21 is located on a second side of the second pfc inductor 17 and the first electrolyzer module 20 in the second direction D2.

It should be noted that the first side of the first pfc inductor 16 and the second pfc inductor 17 in the second direction D2 is below the first pfc inductor 16 and the second pfc inductor 17, and the second side of the second pfc inductor 17 and the first electrolytic module 20 in the second direction D2 is above the second pfc inductor 17 and the first electrolytic module 20.

In practical applications, the drain of the MOS transistor is connected to the cathode of the diode in sequence, and the source of the MOS transistor is connected to the anode of the diode, one end of the first power factor correction inductor 16, and one end of the second power factor correction inductor 17. In the actual use process of the PCB, if the power switch is turned on at the maximum of the sine wave, during the process of charging the capacitor, the first PFC inductor 16 and the second PFC inductor 17 in the PFC module 220 may have a magnetic saturation phenomenon, which may affect the normal operation of the PFC module, and may cause the current flowing through the PFC module 220 to lose control. At this time, a MOS transistor and a diode are used as the PFC device 18, and at the moment of switching on and off, another branch is provided for charging a large capacitor, so as to prevent a large current from flowing through the PFC device 18 to cause saturation, and the switching transistor is damaged by overcurrent.

It should be noted that, by using the characteristics of the pfc device 18 and the first pfc inductor 16 and the second pfc inductor 17, the PF value and the THD value of the power supply can be improved, and the interference to each module on the circuit board can be reduced.

As described above, in the first direction D1 and the second direction D2, the arrangement positions of the components in the PFC module 220 are specific, so that no return line exists on each module of the PCB 20, and the routing on the PCB 20 is reasonable.

Optionally, with continued reference to fig. 2, the resonant module 230 includes a resonant half-bridge circuit 19, a first resonant inductor 26, a second resonant inductor 25, a first resonant capacitor 22, a second resonant capacitor 23, a third resonant capacitor 24, and a synchronous rectification circuit 27, wherein the first resonant capacitor 22, the second resonant capacitor 23, and the third resonant capacitor 24 are sequentially arranged along a first direction D1, the first resonant inductor 26 and the second resonant inductor 25 are sequentially arranged along a second direction D2, the first resonant capacitor 22, the second resonant capacitor 23, and the third resonant capacitor 24 are located on a first side of the second resonant inductor 25 in the first direction D1, the resonant half-bridge circuit 19 is located on a first side of the first resonant inductor 26 in the first direction D1, and the synchronous rectification circuit 27 is located on a second side of the first resonant inductor 26 and the second resonant inductor 25 in the first direction D1.

Note that a first side of second resonant inductor 25 in first direction D1 is a left side of second resonant inductor 25, a first side of first resonant inductor 26 in first direction D1 is a left side of first resonant inductor 26, and a second side of first resonant inductor 26 and second resonant inductor 25 in first direction D1 is a right side of first resonant inductor 26 and second resonant inductor 25.

The LLC module 230 mainly utilizes the first resonant inductor 26 and the second resonant inductor 25 to achieve the advantages of high efficiency and good dimming performance, and thus improves the efficiency and reliability of the power supply.

It should be noted that, when the resonant half-bridge circuit 19 included in the LLC module 230 operates, the output voltage of the LLC module 230 is smaller than the peak output voltage of the half-bridge LLC module 230, and in some other embodiments, the resonant half-bridge circuit 19 in the LLC module 230 operates in combination with other power devices to provide a freewheeling channel, and the output voltage range of the PCB 20 can be widened by using the LLC module 230, which is favorable for further improving the resonant inductance and the operating frequency.

Optionally, with continued reference to fig. 2, the output module 240 includes a first filtering electrolytic capacitor 28, a second filtering electrolytic capacitor 29, a third filtering electrolytic capacitor 30, a fourth filtering electrolytic capacitor 31, a fifth filtering electrolytic capacitor 32, a sixth filtering electrolytic capacitor 33, a seventh filtering electrolytic capacitor 34, an eighth filtering electrolytic capacitor 35, a third filtering inductor 37, a ninth filtering capacitor 36, and an output port 38, wherein the first filtering electrolytic capacitor 28, the second filtering electrolytic capacitor 29, the third filtering electrolytic capacitor 30, the fourth filtering electrolytic capacitor 31, the fifth filtering electrolytic capacitor 32, the sixth filtering electrolytic capacitor 33, the seventh filtering electrolytic capacitor 34, and the eighth filtering electrolytic capacitor 35 are located on a first side of the third filtering inductor 37 in the second direction D2, the ninth filtering capacitor 36 and the output port 38 are located on a second side of the third filtering inductor 37 in the second direction D2, and the output port 38 is located on a second side of the ninth filter capacitor 36 in the first direction D1.

It should be noted that a first side of the third filter inductor 37 in the second direction D2 is below the third filter inductor, a second side of the third filter inductor 37 in the second direction D2 is above the third filter inductor 37, and a second side of the ninth filter capacitor 36 in the first direction D1 is right of the ninth filter capacitor 36.

The first filtering electrolytic capacitor 28, the second filtering electrolytic capacitor 29, the third filtering electrolytic capacitor 30, the fourth filtering electrolytic capacitor 31, the fifth filtering electrolytic capacitor 32, the sixth filtering electrolytic capacitor 33, the seventh filtering electrolytic capacitor 34 and the eighth filtering electrolytic capacitor 35 are connected in parallel to the output end of the synchronous rectification circuit mentioned in the above embodiment, so as to reduce the ac ripple coefficient and improve the high-efficiency smooth dc output. In an electronic circuit for converting alternating current into direct current for supplying power during specific use, the filtering electrolytic capacitor not only can enable the direct current output of a power supply to be stable, reduces the influence of alternating pulsation ripple on the electronic circuit, but also can absorb the current fluctuation generated in the working process of the electronic circuit and the interference of the alternating current power supply in series, so that the working performance of the circuit board is more stable.

Similarly, in the first direction D1 and the second direction D2, the arrangement positions of the components in the LLC module 230 are specific, so that no return line exists on each module of the PCB 20, and the routing on the PCB 20 is reasonable.

Optionally, with continued reference to FIG. 2, the first rectifier-filter bridge 5 and the second rectifier-filter bridge 6 of the lightning protection filter module 210 are electrically connected to the first PFC inductance 16 of the PFC module 220 (not shown).

It should be noted that, since the first rectifying and filtering bridge 5 and the second rectifying and filtering bridge 6 are the most commonly used circuits for rectifying by utilizing the unidirectional conductivity of the diode, both the first rectifying and filtering bridge 5 and the second rectifying and filtering bridge 6 are electrically connected to the first power factor correction inductor 16 in the PFC module 220, so as to implement the unidirectional circuit transmission on the PCB circuit board 20 in the embodiment.

Optionally, with continued reference to fig. 2, the first electrolytic module 20 in the power factor correction module 220 is electrically connected to the first resonant capacitor 22, the second resonant capacitor 23 and the third resonant capacitor 24 on the resonant module respectively (not shown in the figure), and in the second direction D2, the resonant half-bridge circuit 19 is located on the first side of the first electrolytic module 20, and the first resonant capacitor 22, the second resonant capacitor 23 and the third resonant capacitor 24 are located on the second side of the first electrolytic module 20.

The electric connection between the PFC module 220 and the LLC module 230 is realized by the electrolytic module 20 being electrically connected to the first resonant capacitor 22, the second resonant capacitor 23, and the third resonant capacitor 24 on the LLC module 230, respectively, and since the current on the inductor in the PFC module 220 cannot change suddenly, the surge current is limited by the connected first resonant capacitor 22, the second resonant capacitor 23, and the third resonant capacitor 24.

Optionally, fig. 3 is a schematic diagram of another PCB circuit board provided in an embodiment of the present invention. As shown in fig. 3, the input port 11 is located on a first surface S1 of the PCB 20, the first rectifier filter bridge 5 and the second rectifier filter bridge 6 are located on a second surface S2 of the PCB 20, the second surface S2 is away from the first surface S1, and the pfc device 18, the resonant half-bridge circuit 19 and the synchronous rectifier circuit 27 are all located on the second surface S2 of the PCB 20.

Among them, in the present embodiment, since the PCB circuit board 20 is disposed inside the power supply housing 10, it is possible to perform fixing and heat dissipation using the power supply housing 10.

Specifically, the power devices in the lightning protection filter module, the PFC module, the LLC module, and the output module are disposed close to the heat dissipation portion of the power supply housing, that is, the second surface S2 of the PCB in this embodiment is favorable for direct heat dissipation when the power devices generate heat, so as to solve the thermal problem of the LED power supply.

As described above, the power devices in each module of the PCB 20 are the first rectifying and filtering bridge 5, the second rectifying and filtering bridge 6, the power factor correction device 18, the resonant half-bridge circuit 19 and the synchronous rectifying circuit 27, which are all located on the second surface S2 of the PCB 20, and are tightly attached to the power supply housing of the LED power supply for heat dissipation, thereby achieving the optimal thermal design

Optionally, with continued reference to fig. 2, all components of the lightning protection filter module 210, the power factor correction module 220, the resonance module 230, and the output module 240 have a height of less than or equal to 30mm (not shown) on the PCB circuit board 20, and a width L of the PCB circuit board 20 along the second direction D2 is less than or equal to 80 mm.

Wherein, compare the PCB circuit board in the current LED power, the embodiment of the utility model provides a PCB circuit board design wholly has improved the product size of LED power on the basis of guaranteeing the optimal design of size, is convenient for install the LED power that this embodiment provided on the LED lamps and lanterns that have the requirement to width and height, improves the utilization ratio of product.

Optionally, the power of the LED power supply is between 1000W-15000W.

The LED power supply provided by the embodiment is also suitable for LED equipment with larger power on the basis of ensuring reasonable and simple wiring on a PCB circuit board, and further improves the utilization rate of the LED power supply.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A high-power LED power supply is characterized by comprising a power supply shell and a PCB circuit board arranged in the power supply shell;

2. The LED power supply of claim 1, wherein the lightning protection filter module comprises an input port, a first voltage dependent resistor, a first filter capacitor, a first filter inductor, a second filter capacitor, a relay, a second filter inductor, a third filter capacitor, a first rectifying filter bridge, a second rectifying filter bridge, a fourth filter capacitor, a second voltage dependent resistor, a third voltage dependent resistor, a fourth voltage dependent resistor, and a first discharge tube;

3. The LED power supply of claim 2, wherein said power factor correction module comprises a power factor correction device, a first power factor correction inductor, a second power factor correction inductor, a first electrolysis module, and a first auxiliary power module;

4. The LED power supply of claim 3, wherein the resonant module comprises a resonant half-bridge circuit, a first resonant inductor, a second resonant inductor, a first resonant capacitor, a second resonant capacitor, a third resonant capacitor, and a synchronous rectification circuit;

5. The LED power supply of claim 4, wherein the output module comprises a first filtering electrolytic capacitor, a second filtering electrolytic capacitor, a third filtering electrolytic capacitor, a fourth filtering electrolytic capacitor, a fifth filtering electrolytic capacitor, a sixth filtering electrolytic capacitor, a seventh filtering electrolytic capacitor, an eighth filtering electrolytic capacitor, a third filtering inductor, a ninth filtering capacitor, and an output port;

wherein the first filtering electrolytic capacitor, the second filtering electrolytic capacitor, the third filtering electrolytic capacitor, the fourth filtering electrolytic capacitor, the fifth filtering electrolytic capacitor, the sixth filtering electrolytic capacitor, the seventh filtering electrolytic capacitor and the eighth filtering electrolytic capacitor are located on a first side of the third filtering inductor in a second direction, the ninth filtering capacitor and the output port are located on a second side of the third filtering inductor in the second direction, and the output port is located on a second side of the ninth filtering capacitor in the first direction.

6. The LED power supply of claim 3 wherein the first rectifying bridge and the second rectifying bridge of the lightning protection filter module are both electrically connected to the first power factor correction inductor of the power factor correction module.

7. The LED power supply of claim 4, wherein the first electrolysis module of the power factor correction module is electrically connected to the first resonant capacitor, the second resonant capacitor and the third resonant capacitor on the resonant module, respectively;

8. The LED power supply of claim 5, wherein the input port is located on a first surface of the PCB circuit board, and the first and second rectifying-filtering bridges are located on a second surface of the PCB circuit board, the second surface facing away from the first surface;

9. The LED power supply of claim 5, wherein all components of the lightning protection filter module, the power factor correction module, the resonance module, and the output module have a height of less than or equal to 30mm on the PCB circuit board, and a width of the PCB circuit board along the second direction is less than or equal to 80 mm.

10. The LED power supply of claim 1, wherein the power of the LED power supply is between 1000W-15000W.