CN114499104A - Switching power supply device - Google Patents

Abstract

A switching power supply device: the device comprises an insulating shell, at least one wire inlet end, at least one wire outlet end and an electronic controller, wherein an arc baffle is arranged on the insulating shell. Meanwhile, the insulating shell is provided with a free elimination area and a gas diffusion area. The deionization area comprises a first cavity and deionization metal sheet bodies arranged in the first cavity: the arc baffle is arranged on the insulating shell of the power supply device to separate the switch operation area from the arc gas diffusion area, so that the possibility of damage to hands caused by the arc gas diffusion in the CO operation process is avoided. In addition, the power supply device has compact structure, is additionally arranged at the wire inlet end of the switch, and does not reduce the breaking performance index of the original switch due to the unique design of a free area, a gas diffusion area and a pressure relief channel.

Description

Switching power supply device

Technical Field

The invention relates to the field of low-voltage power distribution, in particular to a switching power supply device.

Background

With the continuous advance of the national power grid in the plan of three-type and two-network, various products in the power system are continuously transformed and upgraded, and the functions of circuits, equipment monitoring, remote communication, data processing edge calculation, display and the like are continuously added into low-voltage products and equipment, so that the electronization and intellectualization of the products and the equipment become necessary trends.

In the former patent, "an intelligent wire holder 202010818613.1", although the consideration based on the system integration is solved, the low-voltage product is simplified and combined, and the problems such as crowded internal space of the device, difficult structural design, poor heat dissipation effect and the like are solved. In the previous patent, "a modular power supply unit 202010948974.8", the requirements of rapid maintenance, live replacement, and the like of an electronic module are met, the convenience of uninterrupted maintenance is improved, the cost of maintenance equipment and labor cost is reduced, and the problem of power supply continuity is improved.

However, the problem that the space of some intelligent reconstruction sites with compact space is insufficient still exists, and the scene of intelligent reconstruction cannot be realized only by additionally arranging an intelligent wire holder or a modular power supply device. How to realize not changing switch, cabinet body under the scene that the space is compact, only do equipment and install additional and simple circuit adjustment can realize the purpose of intelligent transformation, do not reduce the breaking performance index of original switch simultaneously and become the problem that the key will be solved.

Disclosure of Invention

Based on the above background, the present invention is intended to solve the following problems:

a switching power supply device: the device comprises an insulating shell, at least one wire inlet end, at least one wire outlet end and an electronic controller, wherein an arc baffle is arranged on the insulating shell. Meanwhile, the insulating shell is provided with a free elimination area and a gas diffusion area. The deionization area comprises a first cavity and deionization metal sheet bodies arranged in the first cavity: the arc baffle is arranged on the insulating shell of the power supply device to separate the switch operation area from the arc gas diffusion area, so that the possibility of damage to hands caused by the arc gas diffusion in the CO operation process is avoided. In addition, the power supply device has compact structure, is additionally arranged at the wire inlet end of the switch, and does not reduce the breaking performance index of the original switch due to the unique design of a free area, a gas diffusion area and a pressure relief channel.

The above object of the present invention can be achieved by the following technical solutions:

as shown in fig. 1 to 7, a switching power supply device includes an insulating housing, at least one incoming line terminal, at least one outgoing line terminal, and an electronic controller, wherein an arc baffle is disposed on the insulating housing.

Preferably, the insulation housing is provided with a deionization area and a gas diffusion area, the deionization area comprises a first cavity and deionization metal sheet bodies, and the deionization metal sheet bodies are arranged in the first cavity.

Preferably, the insulating housing is substantially of a L type, and the gas diffusion area is arranged at the intersection of the horizontal section and the vertical section of the insulating housing.

Preferably, the top end of the gas diffusion area is provided with a gas diffusion channel.

Preferably, a pressure relief channel penetrating through the bottom is arranged at the position, close to the bottom, of the dissociation elimination area.

Preferably, a through channel is provided between the free-dissipation zone and the gas diffusion zone.

Preferably, the fastening direction of the incoming terminal wire is opposite to the fastening direction of the outgoing terminal wire.

Preferably, the number of the inner conductors is equal to that of the wire inlet ends and the wire outlet ends, and the current collectors are arranged on the inner conductors in series, in a sleeved manner or in a mounting manner.

Preferably, the current collector adopts at least one of a current transformer, a shunt, a hall current sensor, a fluxgate current sensor, a rogowski coil, a magnetoresistive current sensor and an optical fiber current sensor.

Preferably, a voltage collector is arranged on the inner electric conductor, and the voltage collector is used as a voltage collector and/or a power supply input of the electronic controller.

Preferably, a temperature collector is arranged on the inner electric conductor, and an output signal of the temperature collector is transmitted to the electronic controller.

Preferably, the electronic controller comprises a communication module and a human-computer interaction module.

Preferably, the communication module adopts a wireless communication mode and/or a wired communication mode, the wireless communication mode comprises at least one of communication modes such as 4G, 5G, WIFI, BLE, ZigBee, NB-IoT and LoRa, and the wired communication mode comprises at least one of communication modes such as HPLC, PLC, RS485, LAN, CAN and Profibus.

Preferably, a communication interface is arranged on the surface of the insulating shell, the communication interface adopts at least one of RS485, LAN, CAN and Profibus, and the communication interface is used as an access end of the communication module in a wired communication mode.

Preferably, the outlet end of the power supply device is connected with a circuit breaker, and the surface of the insulating shell is provided with a state interface connected with a lower port voltage signal of the circuit breaker.

Preferably, an N line voltage interface is arranged on the surface of the insulating shell.

Preferably, the electronic controller is divided into a pluggable electronic module and a fixed electronic module, and the electronic module can be independently replaced in a charged mode.

Preferably, the incoming line end comprises an incoming line end connecting plate, the incoming line end connecting plate is electrically connected to the upper incoming line busbar, and the incoming line end connecting plate is a hard conductor or a flexible conductor.

The invention has the following beneficial effects:

1. the arc baffle is arranged on the insulating shell of the power supply device to separate the switch operation area from the arc gas diffusion area, so that the possibility of damage to hands caused by the arc gas diffusion in the CO operation process is avoided.

2. The power supply device has a compact structure, is additionally arranged at the wire inlet end of the switch, and does not reduce the breaking performance index of the original switch due to the unique design of a free area, a gas diffusion area and a pressure relief channel.

3. This power supply unit's electronic controller can change with electricity alone, need not to pull down the insulating base module of connecting once conductive loop, guarantees power supply continuity, reduces maintenance equipment cost and cost of labor, improves monitoring function, communication function's reliability, and easily secondary upgrading is reformed transform.

4. The power supply device has reasonable structural design. The electronic controller comprises a power supply, communication, man-machine interaction and electric quantity acquisition, and can realize the quick conductive contact and disconnection of the same conductive loop.

5. The power supply device can realize the monitoring of current, voltage, earth fault current and temperature equivalent, and simultaneously has the functions of measurement, automatic physical topology support, measurement misalignment positioning, on-site fault research and judgment, HPLC communication, wireless communication, RS485 communication, line loss analysis support and the like.

6. The power supply device is based on the consideration of the system integration, simplifies and combines the respective internal components of the low-voltage products and the equipment, so that the total quantity of the components used in the system, namely the low-voltage products and the equipment, is simplified, combined and reduced, the unit cost of the respective low-voltage products and equipment is further saved, the occupied space inside is saved, the environmental friendliness of internal electronic components is improved, the electromagnetic compatibility is improved, the internal temperature rise is reduced, and the service life is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1: local sectional view of switch power supply device and connection breaker structure

FIG. 2: switch power supply device and connection breaker structure diagram

FIG. 3: structure diagram of switching power supply device

FIG. 4: first combined structure diagram of arc baffle of switching power supply device

FIG. 5: arc baffle combination structure diagram of switching power supply device

FIG. 6: combined structure diagram of arc baffle of switching power supply device

FIG. 7: a structure diagram of a pluggable electronic module of a switching power supply device.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, parts without departing from the spirit of the invention.

As shown in fig. 1 to 7, a switching power supply device includes an insulating housing 10, at least one incoming line terminal 11, at least one outgoing line terminal 12, and an electronic controller 13, wherein an arc baffle 1021 is disposed on the insulating housing 10. The arc barrier 1021 is removably and fixedly connected to the insulating housing 10. Further, a T-shaped groove, an inverted trapezoidal groove, and a dovetail groove are formed in the insulating housing 10, the grooves with various cross-sectional shapes are stretched in the width direction of the power supply device to form a long groove, and the long groove is communicated with at least one end face of the insulating housing 10 in the width direction, accordingly, the arc baffle 1021 is a thin sheet, one end of the arc baffle 1021 is provided with a feature matched with the T-shaped groove, the inverted trapezoidal groove, and the dovetail groove, and the arc baffle 1021 is inserted into the stretched groove at the through groove in the width direction of the insulating housing 10 to complete the plug-in type fixed mounting, as shown in fig. 4. Still further, a T-shaped groove, an inverted trapezoidal groove, and a dovetail groove are disposed in the length direction of the insulating housing 10, the T-shaped groove, the inverted trapezoidal groove, and the dovetail groove are stretched in the length direction of the insulating housing 10, and are penetrated through at least one end surface of the insulating housing 10 in the length direction, accordingly, the arc baffle 1021 is substantially L-shaped, a short arm of the L-shaped is disposed with a feature matching the T-shaped groove, the inverted trapezoidal groove, and the dovetail groove, and the arc baffle 1021 is inserted into the stretched groove at the penetrated groove in the length direction of the insulating housing 10 to complete the plug-in type fixed mounting, as shown in fig. 5. Furthermore, an opening with any shape is arranged in the depth direction of the insulating housing 10, accordingly, the arc baffle 1021 is a thin sheet, a protruding feature with an inverse buckle is arranged on the arc baffle 1021, the arc baffle 1021 is inserted into the opening at the depth of the insulating housing 10, the inverse buckle feature on the arc baffle 1021 is clamped on the opening at the depth of the insulating housing 10, and the plug-in type fixing installation is completed, as shown in fig. 6. Accordingly, a fixed connection achieved by way of male-female interchange is also within the scope of this patent. After the arrangement, the arc baffle 1021 has the beneficial effect of separating the switch operation area from the arc gas diffusion area, and preventing the possible damage of the arc gas to hands during CO operation.

The arc baffle 1021 is preferably made of insulating elastic materials such as soft polyvinyl chloride, TPE, TPR and rubber.

The insulating shell 10 is provided with a free-flowing area 101. The deionization area 101 comprises a first cavity 1011 and deionization metal sheet 1012, wherein the deionization metal sheet 1012 is arranged in the first cavity 1011.

The deionization area 101 is arranged corresponding to an arc spraying opening of the circuit breaker installed in a matched mode. When the circuit breaker carries out short-circuit protection, the arc spout of circuit breaker spouts the free body of electric arc, metal spouts sediment and high temperature high-pressure gas, free body of electric arc, metal spout the sediment and enter into and disappear in the isolated area 101, the metal that disappears and to disappear the isolated metal sheet body 1012 that sets up in the isolated area 101 of electric arc free body and disappear and dissociate, to the metal spouts the sediment and separates the shelves, prevents that the free body of electric arc, metal spout the peripheral equipment that the sediment was dispersed everywhere and is caused and other similar destruction such as interphase short circuit, looks ground short circuit.

The insulating housing 10 is provided with a gas diffusion region 102. The insulating housing 10 is substantially of a l-type, and the gas diffusion area 102 is disposed at the intersection of the horizontal section and the vertical section of the insulating housing 10.

The gas diffusion area 102 and a wiring tool which is communicated with an arc spraying opening of the breaker installed in a matching mode are arranged correspondingly through the channel. The circuit breaker carry out short-circuit protection the time, the spout arc mouth blowout electric arc trip body, the metal of circuit breaker spout sediment and high-temperature high-pressure gas, high-temperature high-pressure gas pass through wiring instrument pass the passageway and spread fast to the gas diffusion district 102, realize the quick release of circuit breaker internal pressure is favorable to its electric arc to remove rapidly and stretch to in its explosion chamber to accomplish short-circuit breaking protection fast. The setting does not reduce the breaking performance index of the original switch.

An arc baffle 1021 is provided at one end of the gas diffusion region 102. The arc baffle 1021 is arranged at the lower end of the insulating shell 10 in the length direction, and separates the switch operation area from the arc gas diffusion area, so that the beneficial effect of preventing the damage of the arc gas diffusion to human hands during CO operation is achieved.

Further, a gas diffusion passage 1022 is provided at the top end of the gas diffusion area 102. The gas diffusion passage 1022 further diffuses the high-temperature and high-pressure gas ejected from the arc-ejecting port of the circuit breaker to the gas diffusion area 102. The quick release of the internal pressure of the circuit breaker is realized, and the electric arc of the circuit breaker can be moved and elongated into the arc extinguish chamber, so that the short-circuit breaking protection can be completed quickly. The setting does not reduce the breaking performance index of the original switch.

The free-flowing area 101 is provided with a pressure relief channel 1013 penetrating the bottom near the bottom. The arc-extinguishing zone 101 further diffuses the arc-free body, the metal slag, and the high-temperature high-pressure gas, which are ejected from the arc-ejecting port of the breaker into the gas diffusion zone 102. The quick release of the internal pressure of the circuit breaker is further realized, and the electric arc of the circuit breaker can be moved and elongated into the arc extinguish chamber, so that the short-circuit breaking protection can be completed quickly. The setting does not reduce the breaking performance index of the original switch.

A through channel 103 is provided between the deionization region 101 and the gas diffusion region 102. The pressure difference between the deionization area 101 and the gas diffusion area 102 is balanced, so that the internal pressure of the circuit breaker is further quickly released, the electric arc of the circuit breaker can be quickly moved and elongated into an arc extinguish chamber of the circuit breaker, and short-circuit breaking protection can be quickly completed. The setting does not reduce the breaking performance index of the original switch.

The wire connection fastening direction of the wire inlet end 11 is opposite to the wire connection fastening direction of the wire outlet end 12. The wire fixing mode of the wire outlet end 12 is a screw fastening mode in the direction from top to bottom in the depth direction, the wire fixing mode of the wire inlet end 11 is a screw fastening mode in the direction from bottom to top in the depth direction, and the insulating shell 10 is guaranteed to have a complete accommodating space of the internal electronic controller 13, so that the power supply device is guaranteed to be compact in structure.

As shown in fig. 7, the communication module 131 adopts wireless communication and/or wired communication, where the wireless communication includes at least one of communication methods such as 4G, 5G, WIFI, BLE, ZigBee, NB-IoT and LoRa, and the wired communication includes at least one of communication methods such as HPLC, PLC, RS485, LAN, CAN and Profibus.

The surface of the insulating housing 10 is provided with a communication interface 104, the communication interface 104 adopts at least one of RS485, LAN, CAN and Profibus, and the communication interface 104 is used as an access end of the communication module 131 in a wired communication mode.

The communication interface 104 or the wireless communication module 131 receives communication information from a branch electric energy meter or/and a branch switch installed at a lower stage of the device, and the received relevant communication information of the branch switch includes but is not limited to information such as equipment number, address, current, voltage, electric quantity, frequency, harmonic wave, switching on and off, fault protection event and the like; and receiving data of the branch electric energy meter, such as equipment number, address, current, voltage, electric quantity, frequency, harmonic wave and the like.

The electronic controller 13 includes a communication module 131 and a human-computer interaction module 132.

The human-computer interaction module 132 locally outputs and displays the metering data of the current, the voltage, the power, the electric quantity and the like calculated by the microprocessor of the electronic controller 13 and the switching on/off state, and locally inputs parameters for setting a communication address, setting time and the like.

The insulating housing 10 is provided with inner conductors 14 having the same number as the inlet terminals 11 and the outlet terminals 12, and the inner conductors 14 are provided with current collectors 15 in series, in a sleeved manner, or in a mounted manner.

The current collector 15 is at least one of a current transformer, a shunt, a hall current sensor, a fluxgate current sensor, a rogowski coil, a magnetoresistive current sensor, and an optical fiber current sensor.

The current collector 15 is used as a current collector metered by the electronic controller 13 and/or a current collector for overcurrent measurement and/or a current collector at a high frequency megahertz level.

A voltage collector 16 is arranged on the inner conductor 14, which voltage collector 16 serves as a voltage collector and/or a power supply input for the electronic control unit 13.

The surface of the insulating shell 10 is provided with an N line voltage interface 106.

And (4) a zero-breaking alarm function: when the power supply device is 4P, N phases can be measured and detected, and the detection current precision of the N phases can reach mA level. When the N lines at the inlet end of the power supply device are broken: the load difference degree of each phase of A, B, C is different, so that load voltages Ua, Ub and Uc of each phase of A, B, C are unbalanced, and when the unbalance value of the detected current of the N phase and the three-phase voltage reaches a certain threshold value, the N-line is judged to be broken. When the current of the switch N phase is smaller than the judgment threshold value and any one phase current of the switch A, B, C phase is larger than or equal to the judgment threshold value, the N line at the outgoing line end is judged to be broken or the N lines at the incoming and outgoing line ends are simultaneously broken.

The voltage signal collected by the voltage collector 16 is analyzed and processed by the electronic controller 13 to obtain the voltage and voltage fault information of the device. And the voltage is collected and simultaneously used as the electric energy input of the working power supply of the electronic controller 13.

The power supply device obtains and stores metering data such as current, voltage, power, electric quantity and the like after the analysis and processing of the electronic controller 13 according to the current collected by the current collector 15 and the voltage signal collected by the voltage collector 16.

The power supply device obtains electricity measurement comparison data of total incoming lines, total branched outgoing lines and total electric energy meter measurement by combining local physical topological relation through electricity measurement information detected by the power supply device and electricity measurement information of a branch electric energy meter and a branch switch obtained through communication, and the electricity measurement comparison data are used as important analysis data of metering misalignment and obtain a fault ID of fault equipment.

The communication module 131 reads corresponding measurement data such as current, voltage, power, and power amount, and transmits the data to the terminal in a communication manner.

A temperature collector 17 is arranged on the inner conductive body 14, and an output signal of the temperature collector 17 is transmitted to the electronic controller 13.

In a preferred embodiment, the temperature collector 17 is one of a thermocouple, a thermistor, a platinum resistor, and a temperature IC. The temperature collector 17 can collect the temperature near the incoming line terminal 11 and/or the outgoing line terminal 12 of the direct current miniature circuit breaker and/or the outgoing line terminal 12 is connected with the lower opening wiring terminal of the circuit breaker, and transmits the collected temperature signal to the electronic controller 13, and the electronic controller 13 compares the internal firmware of the microprocessor arranged on the electronic controller with a preset temperature early warning/protection threshold value to obtain whether to perform temperature early warning/protection. If the temperature early warning is carried out, the early warning information is transmitted to the man-machine interaction module 132 for carrying out local temperature early warning and displaying and/or transmitted to the communication module 131 for carrying out remote temperature early warning.

The outlet end 12 of the power supply device is connected with a circuit breaker, and the surface of the insulating shell 10 is provided with a state interface 105 connected with a lower opening voltage signal of the circuit breaker.

The power supply device comprehensively judges the state quantity information of the connecting circuit breaker by combining the current, the voltage and the state interface 105 information, such as overcurrent protection breaking, manual brake opening or events without load, over-temperature and the like, and local fault judgment and active reporting are carried out through the communication module 131.

The electronic controller 13 further includes a power supply module and is provided with a power supply output port, which is a protection device/equipment/device connected to the lower single-phase wire, such as a branch switch, and provides an additional stable power supply for supplying power when the short-circuit voltage drops, and the branch switch does not need to be provided with a current self-generating power supply device repeatedly therein.

The electronic controller 13 is divided into a pluggable electronic module 133 and a fixed electronic module 134.

The fixed electronic module 134 includes a current sampling resistor, a connector.

The pluggable electronic module 133 of the electronic controller 13 of the power supply device can be independently changed in a live-line mode, the insulating base module connected with a primary conductive loop does not need to be detached, the power supply continuity is guaranteed, the cost of maintenance equipment and the labor cost are reduced, the reliability of the monitoring function and the communication function is improved, and the secondary upgrading and transformation are easy.

The incoming line terminal 11 comprises an incoming line terminal connecting plate 1101, the incoming line terminal connecting plate 1101 is electrically connected to the upper inlet incoming line busbar, and the incoming line terminal connecting plate 1101 is a hard electric conductor or a flexible electric conductor. The flexible electric conductor typically adopts a soft copper braided cable, a copper stranded wire cable and a flexible laminated busbar. The flexible electrical conductor has further advantages in installation adaptability.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The present embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (19)

1. A switching power supply device comprises an insulating shell (10), at least one wire inlet end (11), at least one wire outlet end (12) and an electronic controller (13), and is characterized in that: an arc baffle (1021) is arranged on the insulating shell (10).

2. The switching power supply device according to claim 1, wherein: set up on insulating casing (10) and disappear free district (101), gas diffusion district (102), it includes first cavity (1011), disappears free metal sheet body (1012) to disappear free district (101), it sets up to disappear free metal sheet body (1012) in first cavity (1011).

3. The switching power supply device according to claim 2, wherein: the L-shaped insulation shell (10) is of a substantially L shape, and the gas diffusion area (102) is arranged at the intersection of the transverse section and the vertical section of the insulation shell (10).

4. The switching power supply device according to claim 3, wherein: the top end of the gas diffusion area (102) is provided with a gas diffusion channel (1022).

5. The switching power supply device according to claim 2, wherein: and a pressure relief channel (1013) penetrating through the bottom is arranged at the position of the free-elimination area (101) close to the bottom.

6. The switching power supply device according to claim 2, wherein: and a through channel (103) is arranged between the free elimination area (101) and the gas diffusion area (102).

7. The switching power supply device according to claim 1, wherein: the wiring fastening direction of the wire inlet end (11) is opposite to that of the wire outlet end (12).

8. The switching power supply device according to claim 1, wherein: the insulation shell (10) is internally provided with inner conductors (14) with the same number as the wire inlet ends (11) and the wire outlet ends (12), and the inner conductors (14) are provided with current collectors (15) in series, sleeved or mounted.

9. The switching power supply device according to claim 8, wherein: the current collector (15) adopts at least one of a current transformer, a shunt, a Hall current sensor, a fluxgate current sensor, a Rogowski coil, a reluctance current sensor and an optical fiber current sensor.

10. The switching power supply device according to claim 8, wherein: a voltage collector (16) is arranged on the inner conductor (14), and the voltage collector (16) is used as a voltage collection and/or power supply input of the electronic controller (13).

11. The switching power supply device according to claim 8, wherein: a temperature collector (17) is arranged on the inner conductive body (14), and an output signal of the temperature collector (17) is transmitted to the electronic controller (13).

12. The switching power supply device according to claim 1, wherein: the electronic controller (13) comprises a communication module (131) and a man-machine interaction module (132).

13. The switching power supply device according to claim 12, wherein: the communication module (131) adopts a wireless communication mode and/or a wired communication mode, the wireless communication mode comprises at least one of communication modes such as 4G, 5G, WIFI, BLE, ZigBee, NB-IoT and LoRa, and the wired communication mode comprises at least one of communication modes such as HPLC, PLC, RS485, LAN, CAN and Profibus.

14. The switching power supply device according to claim 1 or 12, wherein: the surface of the insulating shell (10) is provided with a communication interface (104), the communication interface (104) adopts at least one of RS485, LAN, CAN and Profibus, and the communication interface (104) is used as an access end of the communication module (131) in a wired communication mode.

15. The switching power supply device according to claim 1, wherein: the power supply device is characterized in that a wire outlet end (12) of the power supply device is connected with a circuit breaker, and a state interface (105) connected with a lower opening voltage signal of the circuit breaker is arranged on the surface of the insulating shell (10).

16. The switching power supply device according to claim 1, wherein: an N line voltage interface (106) is arranged on the surface of the insulating shell (10).

17. The switching power supply device according to claim 1, wherein: the electronic controller (13) is divided into a pluggable electronic module (133) and a fixed electronic module (134), and the electronic module (133) can be independently replaced in a charged mode.

18. The switching power supply device according to claim 17, wherein: the fixed electronic module (134) comprises a current sampling resistor and a connector.

19. The switching power supply device according to any one of claims 1 to 18, characterized in that: the incoming line end (11) comprises an incoming line end connecting plate (1101), the incoming line end connecting plate (1101) is electrically connected to an upper inlet incoming line busbar, and the incoming line end connecting plate (1101) is a hard electric conductor or a flexible electric conductor.

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