CN219421105U - Sub-control system of cabinet circuit - Google Patents

Abstract

The utility model discloses a sub-control system of a cabinet circuit, which comprises a driving power circuit arranged outside a cabinet body and a low-voltage cabinet controller arranged in the cabinet; the low-voltage cabinet controller circuit is provided with a plurality of control ports with a connecting function, and is connected with the driving power supply circuit, the photoelectric switch and the LED luminous lamp in the cabinet through the control ports; the driving power supply circuit comprises an input circuit module, a power supply rectifying circuit module, a PFC boost controller circuit module, an LLC resonance controller circuit module, an output sampling feedback circuit module and an EMI circuit module; the commercial power is firstly converted into low-voltage direct-current constant current by each circuit module in the driving power supply, and then the low-voltage constant current passes through a low-voltage cabinet controller to supply power to electric appliances such as LED (light emitting diode) light fixtures and the like in the cabinet; the utility model installs the driving power supply outside the cabinet, and then installs the low-voltage cabinet controller inside the cabinet, which isolates the high-voltage alternating current, prevents the human body from electric shock, and is safer and more reliable.

Description

Sub-control system of cabinet circuit

Technical Field

The utility model belongs to the technical field of cabinet lighting control, and particularly relates to a sub-control system of a cabinet circuit.

Background

Furniture is indispensable in daily life of human beings, and along with continuous development and innovation of science and technology, the intellectualization of furniture products has become the trend of the times development. The cabinet body such as the wardrobe, the shoe cabinet and the cabinet has the functions of storing articles and also has more diversified functions such as illumination, dehumidification, disinfection and the like.

However, with the wide application of the diversified functional cabinets, many difficulties are encountered in practical use. If the current cabinet built-in control system integrates the power supply module and the controller module, 220V alternating current is required to be led in the wiring of the cabinet body in the actual cabinet body lighting system installation process, so that electric shock hidden danger can exist; meanwhile, in order to strengthen insulation, the driving shell integrated by the power supply and the controller is made of structural plastic, when the working power of the whole power supply is high, the plastic structure can influence the heat dissipation effect of the power supply, so that the actual power is low, the maximum actual power in the market at present is less than 100W, and the whole driving power supply is needed to be hidden in the cabinet body, so that the heat dissipation problem in the cabinet body can be aggravated again, and the use efficiency of the actual power of the driving power supply is lower in actual use; and the integrated whole volume of power and controller is great, can increase the installation degree of difficulty, consequently, whole drive housing is plastic construction, in addition introduces 220V's commercial power, and this kind will power module and controller module integrated cabinet body can have the risk of conflagration.

As in prior art CN201822079284.4, an LED intelligent lighting cabinet is disclosed, wherein a power module and a controller module are also installed in the cabinet, and there is a potential safety hazard, therefore, a safe sub-control system of a cabinet circuit is needed to solve the following problems existing in the existing products:

1. 220V alternating current is led in the wiring in the cabinet body, so that potential shock hazards exist;

2. the driving power density in the cabinet body is low, and the cabinet body cannot be suitable for high-power occasions;

3. the driving power supply in the cabinet body can cause fire risk due to heat dissipation in practical application;

4. because the driving power supply in the cabinet body is a vulnerable part, the probability of failure is high, and the maintenance frequency and difficulty are increased;

5. in the market, there are a large number of internal driving power sources of cabinets of different types caused by different power and voltage, and thus the management difficulty is increased.

Disclosure of Invention

Aiming at the problems in the related art, the utility model provides a sub-control system of a cabinet circuit, which aims to overcome the technical problems existing in the related art.

The technical scheme of the utility model is realized as follows: a sub-control system for a cabinet circuit, comprising: the driving power supply circuit is arranged outside the cabinet body, and the low-voltage cabinet controller is arranged inside the cabinet body; the low-voltage cabinet controller comprises a circuit board printed with a low-voltage cabinet controller circuit and a shell arranged outside the circuit board;

the low-voltage cabinet controller circuit is provided with a plurality of control ports with a connecting function, wherein the control ports respectively comprise a power input port, a plurality of controller output ports and a plurality of photoelectric switch access ports;

the driving power supply circuit is connected with the low-voltage cabinet controller circuit through a power input port and is used for outputting low-voltage direct-current constant current to the low-voltage cabinet controller circuit;

the driving power supply is externally arranged, so that the fire risk caused by the heat dissipation problem can be avoided; meanwhile, the driving power supply circuit and the low-voltage cabinet controller circuit are controlled separately, and if the low-voltage cabinet controller fails, the low-voltage cabinet controller is easy to maintain.

Preferably, the driving power supply circuit comprises an input circuit module, a power supply rectifying circuit module, a PFC boost controller circuit module, an LLC resonance controller circuit module, an output circuit module and an output sampling feedback circuit module which are connected in sequence;

the input circuit module is used for connecting with the mains supply and carrying out surge suppression and filtering on the mains supply; the power supply rectifying circuit module is connected with the input circuit module and is used for converting input alternating current into direct current; the PFC boost controller circuit module is connected with the power supply rectifying circuit module and is used for boosting direct current and outputting the direct current; the LLC resonant controller circuit module comprises a main circuit module, wherein the main circuit module is connected with the output end of the PFC boost controller circuit module and is used for modulating the boosted direct current voltage into sinusoidal current; the output circuit module comprises an isolation transformer, and the isolation transformer is connected with the output end of the main circuit module and is used for converting sinusoidal current into low-voltage alternating current; the output circuit module further comprises a rectifying filtering and synchronous rectifying circuit module which is used for converting low-voltage alternating current rectifying filtering and synchronous rectifying into low-voltage direct current constant current electricity and outputting and connecting the low-voltage direct current constant current electricity to a power input port of the low-voltage cabinet controller circuit; the driving power supply circuit also comprises an EMI circuit module for coupling an output ground and an input ground;

preferably, the output sampling feedback circuit module is used for detecting an output current signal of the output circuit module and feeding back the output current signal to the LLC resonant controller circuit module; the LLC resonant controller circuit module, the output circuit module and the output sampling feedback circuit module form a closed loop circuit;

the low-voltage cabinet controller circuit comprises a plurality of shunt circuit modules and a plurality of switch control modules, wherein the shunt circuit modules are connected in parallel and connected between a power input port and a photoelectric switch access port, and the switch control modules are connected with the shunt circuit modules and used for respectively controlling on/off of the circuit.

Preferably, the input circuit module comprises three piezoresistors, three capacitors and a common mode inductance circuit unit; the piezoresistor is used for preventing voltage mutation and playing a role in overvoltage protection; the capacitor is used for preventing current abrupt change; the common mode inductance circuit unit is used for preventing interference of external voltage and current.

Preferably, the main circuit module comprises a square wave generating circuit unit and a resonant network circuit unit; the square wave generating circuit unit converts direct-current voltage into square wave voltage through alternate conduction of the first switching tube and the second switching tube; the resonant network circuit unit is connected with the square wave generating circuit unit and is used for converting square wave voltage into sine current.

Preferably, the LLC resonant controller circuit module further comprises an auxiliary circuit module;

the direct current boosted by the PFC boost controller circuit module outputs sinusoidal current through a main circuit module of the LLC resonant controller circuit module, then outputs low-voltage alternating current to an output circuit module through an isolation transformer, converts the alternating current into direct current through a rectifying filtering and synchronous rectifying circuit module, and filters ripple waves and synchronous rectification to obtain low-voltage direct current constant current; the output sampling feedback circuit module detects an output current signal of the output circuit module and feeds the output current signal back to the auxiliary circuit module of the LLC resonant controller circuit module, and the auxiliary circuit module monitors the data such as the duty ratio, the frequency, the amplitude and the like of the current waveform of the main circuit module according to the fed-back output current signal;

the synchronous rectification can reduce rectification loss in the rectification and filtering process, so that the conversion efficiency is improved, and the heating of the power supply is reduced.

Preferably, the shell of the low-voltage cabinet controller is of a plastic structure and is used for protecting the circuit board and insulation of the internal low-voltage cabinet controller; the shell is of a cuboid box frame structure and comprises a left frame edge, a front frame edge, a right frame edge, a rear frame edge and a top cover; the front frame edge and the rear frame edge are symmetrically arranged along the length direction of the shell, and the left frame edge and the right frame edge are arranged along the width direction of the shell; the left frame edge, the front frame edge, the right frame edge, the rear frame edge and the top cover of the shell are integrally formed;

preferably, the front frame edge and the rear frame edge are respectively provided with a plurality of wiring ports, and the wiring ports are symmetrically arranged front and back; a first wiring socket and a second wiring socket are arranged on the left frame edge and are used for being externally connected with other devices; a plurality of fixing holes are formed in the right frame edge; two mounting holes are formed in opposite angles at the bottom end of the shell and used for fixing a circuit board of the low-voltage cabinet controller.

Preferably, six wiring ports are respectively arranged on the front frame edge and the rear frame edge; and a control port on the low-voltage cabinet controller circuit is connected with other device circuits through a wiring port, a first wiring socket and a second wiring socket on the shell.

Preferably, the output port of the controller is connected with the anode and the cathode of the LED light-emitting lamp respectively through two wiring ports, the power input port is connected with the anode and the cathode of the driving power circuit respectively through two wiring ports, and the photoelectric switch access port is connected with the photoelectric switch through a second wiring socket.

Preferably, the low-voltage cabinet controller circuit comprises a shunt circuit module and a switch control module, wherein the switch control module is provided with a triode, an enhanced N-channel MOS field effect transistor and a voltage stabilizing diode, and when the current of the enhanced N-channel MOS field effect transistor is small, the resistance can be increased; when the triode is conducted, the LED luminous lamp is electrified to emit light, so that electric energy is converted into light energy; when the triode is cut off, the LED luminous lamp is not electrified; the voltage stabilizing diode is matched with the enhanced N-channel MOS field effect transistor, so that the voltage dividing effect is achieved, and the triode is protected.

When the LED light-emitting lamp works, the temperature is increased due to the increase of current, and the service life is reduced; but the constant current power of low-voltage direct current is adopted for power supply, so that the heat dissipation problem caused by temperature rise can be reduced, and meanwhile, the high-voltage alternating current is isolated, so that the power supply is safer.

Preferably, the PFC boost controller circuit module is provided with a PFC chip, and in addition to being capable of controlling overvoltage protection of the output voltage under transient conditions, the integrated circuit also provides protection against feedback loop failure or erroneous setting and boost inductance saturation; the LLC resonant controller circuit module is provided with a switching power supply chip and is used for controlling the PFC boost controller circuit module; the output circuit module is provided with a driving chip for controlling synchronous rectification;

the utility model has the beneficial effects that:

(1) 220V mains supply is isolated from entering the cabinet body, so that the safety is improved, and electric shock is prevented;

(2) The isolated direct current power supply supplies power to the low-voltage cabinet controller and can be used for a high-power cabinet;

(3) The heat emitted by the driving power supply and the low-voltage cabinet controller is not accumulated in the cabinet body, so that the risk of fire is avoided;

(4) The driving power supply is placed outside the cabinet body, and the low-voltage cabinet controller is placed inside the cabinet body, so that the damage rate and the maintenance difficulty are reduced because the low-voltage controller is a non-vulnerable part;

(5) The isolated direct current power supply of any model on the market can be connected to the low-voltage cabinet controller, so that purchasing and management difficulty can be reduced.

Drawings

FIG. 1 is a functional block diagram of the present utility model;

FIG. 2 is a schematic diagram of a driving power circuit of the present utility model;

FIG. 3 is a schematic circuit diagram of an input circuit module of the driving power circuit of the present utility model;

fig. 4 is a schematic circuit diagram of a power rectifier circuit module and PFC boost controller circuit module of the driving power circuit of the present utility model;

FIG. 5 is a schematic circuit diagram of a main circuit module of the LLC resonant controller circuit module of the present utility model;

FIG. 6 is a schematic circuit diagram of an auxiliary circuit module of the LLC resonant controller circuit module of the present utility model;

FIG. 7 is a schematic circuit diagram of an output circuit module of the driving power circuit of the present utility model;

FIG. 8 is a schematic circuit diagram of an output sampling feedback circuit module of the driving power circuit of the present utility model;

FIG. 9 is a circuit schematic of an EMI circuit module of the drive power circuit of the present utility model;

FIG. 10 is a schematic circuit diagram of a low voltage cabinet controller of the present utility model;

FIG. 11 is a schematic diagram of a circuit board of the low-voltage cabinet controller of the present utility model;

FIG. 12 is a schematic diagram of the housing structure of the low-voltage cabinet controller of the present utility model;

fig. 13 is a bottom view of the housing structure of the low-voltage cabinet controller of the present utility model.

Marking:

1. a driving power supply circuit; 11. an input circuit module; 111. a piezoresistor; 112. a capacitor; 113. a common mode inductance circuit; 12. a power rectification circuit module; 13. a PFC boost controller circuit module; 131. a PFC chip; 14. an LLC resonant controller circuit module; 141. a main circuit module; 1411. a square wave generating circuit unit; q2, a first switching tube; q6, a second switching tube; 1412. a resonant network circuit unit; 142. an auxiliary circuit module; 1421. a switching power supply chip; 15. an output circuit module; 151. an isolation transformer; 152. a rectifying filtering and synchronous rectifying circuit module; 153. a driving chip; 16. an output sampling feedback circuit module; 17. an EMI circuit module;

2. a low voltage cabinet controller; 21. a low voltage cabinet controller circuit; 211. a switch control module; 2111. a triode; 2112. an enhanced N-channel MOS field effect transistor; 2113. a zener diode; 212. a shunt circuit module; 213. a control port; j1, a controller output port; j2, a power input port; j3, accessing a port of the photoelectric switch; 22. a circuit board; 23. a housing; 231. a left frame edge; 232. a front frame edge; 233. a right frame edge; 234. a rear frame edge; 235. a top cover; 236. a wiring port; 2311. a first wire connection socket; 2312. a second wire connection socket; 2331. a fixing hole; 237. and (5) mounting holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Example 1

As shown in fig. 1, 2 and 12, a sub-control system for a cabinet circuit includes: a driving power circuit 1 arranged outside the cabinet body and a low-voltage cabinet controller 2 arranged inside the cabinet body;

as shown in fig. 10 to 12, the low-voltage cabinet controller 2 includes a circuit board 22 printed with a low-voltage cabinet controller circuit 21 and a housing 23 provided outside the circuit board 22;

the low-voltage cabinet controller circuit 21 is provided with a plurality of control ports 213 with connection functions, and the control ports 213 respectively comprise a power input port J2, a plurality of controller output ports J1 and a plurality of photoelectric switch access ports J3;

the driving power supply circuit 1 is connected with the low-voltage cabinet controller circuit 21 through a power input port J2, and the driving power supply circuit 1 is used for outputting low-voltage direct-current constant current to the low-voltage cabinet controller circuit 21;

the driving power supply is externally arranged, so that the fire risk caused by the heat dissipation problem can be avoided; at the same time, the driving power supply circuit 1 and the low-voltage cabinet controller circuit 21 are controlled separately, and if the low-voltage cabinet controller 2 fails, the maintenance is easy.

As shown in fig. 1 and 2, the driving power supply circuit 1 includes an input circuit module 11, a power supply rectifying circuit module 12, a PFC boost controller circuit module 13, an LLC resonant controller circuit module 14, an EMI circuit module 17, an output circuit module 15, and an output sampling feedback circuit module 16, which are sequentially connected;

specifically, the input circuit module 11 is used for connecting with the mains supply and suppressing surge and filtering the mains supply; the power rectifying circuit module 12 is connected with the input circuit module 11 and is used for converting input alternating current into direct current; the PFC boost controller circuit module 13 is connected with the power supply rectifying circuit module 12 and is used for boosting direct current and outputting the direct current; the LLC resonant controller circuit module 14 comprises a main circuit module 141, wherein the main circuit module 141 is connected with the output end of the PFC boost controller circuit module 13 and is used for modulating the boosted direct current voltage into sinusoidal current; the output circuit module 15 includes an isolation transformer 151, where the isolation transformer 151 is connected to an output end of the main circuit module 141, and is used to convert sinusoidal current into low-voltage alternating current; the output circuit module 15 further includes a rectifying, filtering and synchronous rectifying circuit module 152, configured to rectify, filter and synchronously rectify the low-voltage ac power into a constant current of low-voltage dc power, and output the constant current to the power input port J2 of the low-voltage cabinet controller circuit 21;

specifically, the output sampling feedback circuit module 16 is configured to detect an output current signal of the output circuit module 15 and feed back the output current signal to the LLC resonant controller circuit module 14; the LLC resonant controller circuit module 14, the output circuit module 15 and the output sampling feedback circuit module 16 form a closed loop circuit.

As shown in fig. 10, the low-voltage cabinet controller circuit 21 includes a plurality of shunt circuit modules 212 and a plurality of switch control modules 211, wherein the plurality of shunt circuit modules 212 are connected in parallel with each other and connected between the power input port J2 and the optoelectronic switch access port J3, and the switch control modules 211 are connected with the shunt circuit modules 212 and are used for respectively controlling on/off of the circuits.

As shown in fig. 3, the input circuit module 11 includes three piezoresistors 111, three capacitors 112 and a common mode inductance circuit 113 unit; the piezoresistor 111 is used for preventing voltage mutation and playing a role of overvoltage protection; the capacitor 112 is used for preventing current abrupt change; the common mode inductance circuit 113 unit is used to prevent interference of external voltage and current.

As shown in fig. 4, the PFC boost controller circuit module 13 is provided with a PFC chip 131, and in addition to being able to control the overvoltage protection of the output voltage in transient conditions, the integrated circuit also provides protection against feedback loop faults or false settings and boost inductance saturation.

As shown in fig. 6, the LLC resonant controller circuit module 14 further includes an auxiliary circuit module 142; the auxiliary circuit module 142 is provided with a switching power supply chip 1421 for controlling the PFC boost controller circuit module 13;

specifically, as shown in fig. 5, the main circuit module 141 includes a square wave generating circuit unit 1411 and a resonant network circuit unit 1412; the square wave generating circuit unit 1411 converts the direct current voltage into a square wave voltage through the alternate conduction of the first switching tube Q2 and the second switching tube Q6; the resonant network circuit unit 1412 is connected to the square wave generating circuit unit 1411, and is configured to convert a square wave voltage into a sinusoidal current;

as shown in fig. 5 to 8, the dc boosted by the PFC boost controller circuit module 13 outputs a sinusoidal current through the main circuit module 141 of the LLC resonant controller circuit module 14, and then outputs a low-voltage ac power to the output circuit module 15 through the isolation transformer 151, and then converts the ac power into dc power through the rectifying filtering and synchronous rectifying circuit module 152, and filters out ripple waves and synchronous rectification to obtain a low-voltage dc constant current; the output sampling feedback circuit module 16 detects an output current signal of the output circuit module 15 and feeds back the output current signal to the auxiliary circuit module 142 of the LLC resonant controller circuit module 14, and the auxiliary circuit module 142 monitors the duty cycle, frequency, amplitude and other data of the current waveform of the main circuit module 141 according to the fed back output current signal;

as shown in fig. 7, the output circuit module 15 is further provided with a driving chip 153 for controlling synchronous rectification; the synchronous rectification can reduce rectification loss in the rectification and filtering process, so that the conversion efficiency is improved, and the heating of the power supply is reduced.

As shown in fig. 9, the EMI circuit module 17 is configured to couple an output ground and an input ground.

As shown in fig. 12 and 13, the outer casing 23 of the low-voltage cabinet controller 2 is of a plastic structure, and the outer casing 23 is used for protecting the board 22 and insulation of the internal low-voltage cabinet controller circuit 21; the housing 23 is a rectangular box frame structure, and the housing 23 includes a left frame side 231, a front frame side 232, a right frame side 233, a rear frame side 234, and a top cover 235; the front frame side 232 and the rear frame side 234 are symmetrically arranged along the length direction of the housing 23, and the left frame side 231 and the right frame side 233 are arranged along the width direction of the housing 23; the left frame 231, the front frame 232, the right frame 233, the rear frame 234 and the top cover 235 of the housing 23 are integrally formed;

specifically, the front frame edge 232 and the rear frame edge 234 are respectively provided with a plurality of connection ports 236, and the connection ports 236 are symmetrically arranged front and back; a first connection socket 2311 and a second connection socket 2312 are arranged on the left frame edge 231 and are used for being externally connected with other devices; a plurality of fixing holes 2331 are formed in the right frame edge 233; two mounting holes 237 are provided at opposite corners of the bottom end of the housing 23 for fixing the circuit board 22 of the low-voltage cabinet controller 2.

Six wiring ports 236 are respectively arranged on the front frame edge 232 and the rear frame edge 234; the control port 213 of the low-voltage cabinet controller circuit 21 is connected with other device circuits through the wiring port 236, the first wiring socket 2311 and the second wiring socket 2312 of the outer shell 23.

Specifically, the controller output port J1 is connected to the anode and the cathode of the LED lighting device through two connection ports 236, the power input port J2 is connected to the anode and the cathode of the driving power circuit 1 through two connection ports 236, and the photoelectric switch access port J3 is connected to the photoelectric switch through a second connection socket 2312;

as shown in fig. 10, the low-voltage cabinet controller circuit 21 includes a shunt circuit module 212 and a switch control module 211, where the switch control module 211 is provided with a triode 2111, an enhanced N-channel MOS field effect transistor 2112 and a zener diode 2113; when the current of the enhanced N-channel MOS fet 2112 is small, the resistance will become large; when the triode 2111 is conducted, the LED luminous lamp is electrified to emit light, so that electric energy is converted into light energy; when the triode 2111 is turned off, the LED light emitting lamp is not electrified; the zener diode 2113 cooperates with the enhancement N-channel mosfet 2112 to provide voltage division to protect the transistor 2111.

When the LED light-emitting lamp works, the temperature is increased due to the increase of current, and the service life is reduced; but the constant current power of low-voltage direct current is adopted for power supply, so that the heat dissipation problem caused by temperature rise can be reduced, and meanwhile, the high-voltage alternating current is isolated, so that the power supply is safer.

Besides controlling the LED lighting device, the low-voltage cabinet controller 2 may be further connected to other functional electrical appliances such as a temperature sensor and a humidity sensor through a connection port 236, and meanwhile, the shunt circuit module 212 and the switch control module 211 are further added to the low-voltage cabinet controller circuit 21 to connect circuits of the other functional electrical appliances, so as to control the other functional electrical appliances by the low-voltage cabinet controller 2.

The utility model relates to a sub-control system of a cabinet circuit, which is characterized in that an integrated driving power supply and a controller which are arranged in a cabinet are decomposed into two independent circuits of a driving power supply circuit 1 and a low-voltage cabinet controller circuit 21; the driving power supply is arranged outside the cabinet body, so that fire disasters caused by heat dissipation can be effectively avoided; meanwhile, the low-voltage cabinet controller 2 is arranged in the cabinet body and connected with the LED luminous lamp, so that high-voltage alternating current is isolated, electric shock of a human body is prevented, and the cabinet is safer; the low-voltage cabinet controller 2 is a non-vulnerable part, and is easier to maintain if the low-voltage cabinet controller 2 is damaged; in addition, the low-voltage cabinet controller 2 can be connected with equipment with different functions and isolated direct current power supplies with different models, and the application can be wider.

Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.

Claims (10)

1. A sub-control system for a cabinet circuit, comprising: a driving power circuit (1) arranged outside the cabinet body and a low-voltage cabinet controller (2) arranged inside the cabinet body; the low-voltage cabinet controller (2) comprises a circuit board (22) printed with a low-voltage cabinet controller circuit (21) and a shell (23) arranged outside the circuit board (22);

the low-voltage cabinet controller circuit (21) is provided with a plurality of control ports (213) with connection functions, and the control ports (213) respectively comprise a power input port (J2), a plurality of controller output ports (J1) and a plurality of photoelectric switch access ports (J3);

the driving power supply circuit (1) is connected with the low-voltage cabinet controller circuit (21) through a power input port (J2), and the driving power supply circuit (1) is used for outputting low-voltage direct current constant current to the low-voltage cabinet controller circuit (21);

the driving power supply circuit (1) comprises an input circuit module (11), a power supply rectifying circuit module (12), a PFC boost controller circuit module (13), an LLC resonance controller circuit module (14), an output circuit module (15) and an output sampling feedback circuit module (16) which are connected in sequence;

the input circuit module (11) is used for connecting with the mains supply and carrying out surge suppression and filtering on the mains supply; the power supply rectifying circuit module (12) is connected with the input circuit module (11) and is used for converting input alternating current into direct current; the PFC boost controller circuit module (13) is connected with the power supply rectifying circuit module (12) and is used for boosting direct current and then outputting the boosted direct current; the LLC resonant controller circuit module (14) comprises a main circuit module (141), wherein the main circuit module (141) is connected with the output end of the PFC boost controller circuit module (13) and is used for modulating the boosted direct current voltage into sinusoidal current; the output circuit module (15) comprises an isolation transformer (151), and the isolation transformer (151) is connected with the output end of the main circuit module (141) and is used for converting sinusoidal current into low-voltage alternating current; the output circuit module (15) further comprises a rectifying, filtering and synchronous rectifying circuit module (152) which is used for converting low-voltage alternating current rectifying, filtering and synchronous rectifying into low-voltage direct current constant current electricity and outputting a power input port (J2) connected to the low-voltage cabinet controller circuit (21);

the output sampling feedback circuit module (16) is used for detecting an output current signal of the output circuit module (15) and feeding the output current signal back to the LLC resonant controller circuit module (14); the LLC resonant controller circuit module (14), the output circuit module (15) and the output sampling feedback circuit module (16) form a closed loop circuit;

the low-voltage cabinet controller circuit (21) comprises a plurality of shunt circuit modules (212) and a plurality of switch control modules (211), wherein the shunt circuit modules (212) are connected in parallel and connected between a power input port (J2) and a photoelectric switch access port (J3), and the switch control modules (211) are connected with the shunt circuit modules (212) and are used for respectively controlling on/off of a circuit.

2. A sub-control system of a cabinet circuit according to claim 1, characterized in that the input circuit module (11) comprises three piezoresistors (111), three capacitors (112) and a common mode inductance circuit (113) unit; the piezoresistor (111) is used for preventing voltage mutation and playing a role in overvoltage protection; the capacitor (112) is used for preventing current abrupt change; the common mode inductance circuit (113) unit is used for preventing interference of external voltage and current.

3. The sub-control system of a cabinet circuit according to claim 1, characterized in that the main circuit module (141) comprises a square wave generating circuit unit (1411) and a resonant network circuit unit (1412); the square wave generating circuit unit (1411) converts direct current voltage into square wave voltage through alternate conduction of the first switching tube (Q2) and the second switching tube (Q6); the resonant network circuit unit (1412) is connected with the square wave generating circuit unit (1411) for converting a square wave voltage into a sinusoidal current.

4. A sub-control system of a tank circuit according to claim 3, characterized in that the LLC resonant controller circuit module (14) further comprises an auxiliary circuit module (142);

the direct current boosted by the PFC boost controller circuit module (13) is output with sinusoidal current through a main circuit module (141) of the LLC resonant controller circuit module (14), then low-voltage alternating current is output to an output circuit module (15) through an isolation transformer (151), and then the alternating current is converted into direct current through a rectifying filtering and synchronous rectifying circuit module (152) and is filtered to obtain low-voltage direct current constant current through ripple filtering and synchronous rectification; the output sampling feedback circuit module (16) detects an output current signal of the output circuit module (15) and feeds the output current signal back to an auxiliary circuit module (142) of the LLC resonant controller circuit module (14), and the auxiliary circuit module (142) monitors current data of the main circuit module (141) according to the fed-back output current signal; the synchronous rectification can reduce rectification loss in the rectification and filtering process, so that the conversion efficiency is improved, and the heating of the power supply is reduced.

5. A sub-control system of a cabinet circuit according to claim 1, characterized by a housing (23) of the low-voltage cabinet controller (2) for protecting an internal low-voltage cabinet controller circuit (21) board (22);

the shell (23) is of a cuboid box frame structure, and the shell (23) comprises a left frame edge (231), a front frame edge (232), a right frame edge (233), a rear frame edge (234) and a top cover (235); the front frame edge (232) and the rear frame edge (234) are symmetrically arranged along the length direction of the shell (23), and the left frame edge (231) and the right frame edge (233) are arranged along the width direction of the shell (23).

6. The system according to claim 5, wherein a plurality of connection ports (236) are respectively provided on the front frame side (232) and the rear frame side (234), and the connection ports (236) are symmetrically arranged front and back; a first wiring socket (2311) and a second wiring socket (2312) are arranged on the left frame edge (231) and are used for being externally connected with other devices; a plurality of fixing holes (2331) are formed in the right frame edge (233); two mounting holes (237) are formed in opposite corners of the bottom end of the shell (23) and are used for fixing a circuit board (22) of the low-voltage cabinet controller (2).

7. The system of claim 6, wherein six connection ports (236) are provided on each of the front frame side (232) and the rear frame side (234); a control port (213) on the low-voltage cabinet controller circuit (21) is connected with other device circuits through a wiring port (236), a first wiring socket (2311) and a second wiring socket (2312) on the outer shell (23).

8. The sub-control system of the cabinet circuit according to claim 7, wherein the controller output port (J1) is connected to the anode and the cathode of the LED lighting fixture through two connection ports (236), the power input port (J2) is connected to the anode and the cathode of the driving power circuit (1) through two connection ports (236), and the photoelectric switch access port (J3) is connected to the photoelectric switch through a second connection socket (2312).

9. The sub-control system of a cabinet circuit according to claim 1, wherein the low-voltage cabinet controller circuit (21) comprises a shunt circuit module (212) and a switch control module (211), the switch control module (211) is provided with a triode (2111), an enhanced N-channel MOS field effect transistor (2112) and a voltage stabilizing diode (2113), and when the current of the enhanced N-channel MOS field effect transistor (2112) is small, the resistance becomes large; when the triode (2111) is conducted, the LED luminous lamp is electrified to emit light, so that electric energy is converted into light energy; when the triode (2111) is cut off, the LED luminous lamp is not electrified; the voltage stabilizing diode (2113) is matched with the enhanced N-channel MOS field effect transistor (2112) together to play a role in voltage division and protect the triode (2111).

10. A sub-control system of a tank circuit according to claim 1, characterized in that the PFC boost controller circuit module (13) is provided with a PFC chip (131) capable of controlling the overvoltage protection of the output voltage in transient conditions; the LLC resonant controller circuit module (14) is provided with a switching power supply chip (1421) for controlling the PFC boost controller circuit module (13); the output circuit module (15) is provided with a driving chip (153) for controlling synchronous rectification; the driving power supply circuit (1) further comprises an EMI circuit module (17) for coupling out ground and in ground.