CN216545761U

CN216545761U - High-power direct current fills electric pile

Info

Publication number: CN216545761U
Application number: CN202123123316.4U
Authority: CN
Inventors: 黄政贤; 何远新; 郭骏; 黄圣; 张俊; 冯旭
Original assignee: CRRC Yangtze Transportation Equipment Group Co Ltd
Current assignee: CRRC Yangtze Transportation Equipment Group Co Ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-05-17
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a high-power direct-current charging pile which comprises a power supply input unit, a power conversion unit, an output switch unit, a charging control unit and a human-computer interaction unit, wherein the power supply input unit is connected with the power conversion unit; the alternating current power supply output end of the power supply input unit is connected with the alternating current power supply input end of the power conversion unit, the direct current power supply output end of the power conversion unit is connected with the direct current power supply input end of the output switch unit, and the direct current power supply output end of the output switch unit is connected with the direct current power supply input end of the charging power supply vehicle; and the signal transmission end of the charging control unit is respectively connected with the power supply input unit, the power conversion unit, the output switch unit and the signal transmission end of the human-computer interaction unit. The high-power direct-current charging pile can realize the quick charging of heavy new energy freight logistics equipment and the electric power supplement in the transportation process.

Description

High-power direct current fills electric pile

Technical Field

The utility model relates to the technical field of charging piles, in particular to a high-power direct-current charging pile.

Background

The existing direct current charging pile is mostly applied to a city area, a highway service area charges traffic facilities such as passenger cars and network reservation cars, the power of the vehicles is low, the battery capacity is generally not too large, the power of the charging pile is generally low, and the single gun power is mostly 60 kw; on the other hand, the application environment of the areas is better.

Because heavy new forms of energy freight transportation logistics equipment lithium cell capacity is bigger, and the tradition fills electric pile power less, can't realize fast filling, and these heavy freight transportation logistics equipment mostly concentrate on main highway trunk line, harbour and freight transportation terminal, face the bad operating mode such as dustiness, high humidity.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the background technology and provide a high-power direct-current charging pile which can realize the quick charging of heavy new energy freight logistics equipment and the electric power supplement in the transportation process.

In order to achieve the purpose, the high-power direct-current charging pile comprises a power supply input unit, a power conversion unit, an output switch unit, a charging control unit and a human-computer interaction unit;

the alternating current power supply output end of the power supply input unit is connected with the alternating current power supply input end of the power conversion unit, the direct current power supply output end of the power conversion unit is connected with the direct current power supply input end of the output switch unit, and the direct current power supply output end of the output switch unit is connected with the direct current power supply input end of the charging power supply vehicle;

and the signal transmission end of the charging control unit is respectively connected with the power supply input unit, the power conversion unit, the output switch unit and the signal transmission end of the human-computer interaction unit.

Furthermore, the high-power direct current charging pile further comprises a fire-fighting unit, and a signal transmission end of the fire-fighting unit is connected with a signal transmission end of the charging control unit.

Further, the power supply input unit comprises a molded case circuit breaker, an alternating current contactor and an alternating current copper bar, and the molded case circuit breaker, the alternating current contactor and the alternating current copper bar are all arranged on a mounting plate at the rear lower part of the charging pile cabinet body;

the inlet of the molded case circuit breaker is connected with an external alternating current power supply, the outlet of the molded case circuit breaker is connected with the inlet of the alternating current contactor, the outlet of the alternating current contactor is connected with the inlet of the alternating current copper bar, and the outlets of the alternating current copper bar are respectively connected with the inlets of the power conversion unit and the charging control unit.

Furthermore, the power conversion unit comprises a charging module group and a cooling fan, wherein the charging module group is formed by connecting a plurality of charging modules in parallel; the charging module group and the cooling fan are arranged above the rear part of the charging pile cabinet body;

and the wire inlets of the charging module group and the cooling fan are respectively connected with the wire outlet of the power supply input unit, and the wire outlet of the charging module group is connected with the output switch unit.

Further, the output switch unit comprises a non-polar direct current contactor, a first fuse, a second fuse, a first direct current contactor, a second direct current contactor and a plurality of copper bars, and the non-polar direct current contactor, the first fuse, the second fuse, the first direct current contactor, the second direct current contactor and the plurality of copper bars are arranged on a mounting plate in front of and below the charging pile cabinet body;

a first wire outlet of the non-polar direct current contactor is connected with a wire inlet of the first fuse through a copper bar, and a second wire outlet of the non-polar direct current contactor is connected with a wire inlet of the second fuse through a copper bar;

the wire outlet of the first fuse is connected with the wire inlet of the first direct current contactor through a copper bar, and the second fuse is connected with the wire inlet of the second direct current contactor through the copper bar;

and the wire outlets of the first direct current contactor and the second direct current contactor are respectively connected with the wire inlet of the man-machine interaction unit.

Furthermore, the charging control unit comprises a first circuit breaker, a second circuit breaker, a lightning protection device, a switching power supply, a charging controller, an intermediate relay, an electric leakage monitoring device, an insulation monitoring device, an electric meter and a 4G communication module;

the first circuit breaker, the second circuit breaker, the lightning protection device, the switching power supply, the charging controller, the intermediate relay, the electric leakage monitoring device, the insulation monitoring device, the electric meter and the 4G communication module are arranged in front of and above the charging pile cabinet body;

the wire inlets of the first circuit breaker and the second circuit breaker are respectively connected with the wire outlet of the molded case circuit breaker, the wire outlet of the first circuit breaker is connected with the wire inlet of the lightning arrester, and the PE port of the lightning arrester is connected with the ground wire;

the outlet of the second circuit breaker is connected with an alternating current inlet of a switching power supply, and the outlet of the switching power supply is respectively connected with inlets of a charging controller, an intermediate relay, a leakage monitoring device, an insulation monitoring device, an ammeter and a 4G communication module;

and the charging controller is communicated with an external remote maintenance platform through a 4G communication module.

Furthermore, a control signal transmission end of the charging controller is connected with control signal transmission ends of the alternating current contactor, the charging module group, the non-polar direct current contactor, the first direct current contactor and the second direct current contactor respectively.

Further, the human-computer interaction unit comprises an emergency stop switch, an indicator light, a touch screen, a card reader and a charging gun, wherein the emergency stop switch, the indicator light, the touch screen and the card reader are arranged on a surface shell of the charging pile cabinet body, and the charging gun is arranged on two sides of the charging pile cabinet body;

the emergency stop switch, the indicator lamp, the touch screen, the card reader and the signal transmission end of the charging gun are respectively connected with the signal transmission end of the charging controller, and the power supply end of the charging gun is connected with the power supply end of the output switch unit.

Still further, the fire-fighting unit comprises an aerosol fire-fighting system, and the aerosol fire-fighting system is arranged at the top of the charging pile cabinet body;

and the signal transmission end of the aerosol fire extinguishing system is connected with the signal transmission end of the charging controller.

Furthermore, the fire-fighting unit further comprises a temperature sensor, and a data transmission end of the temperature sensor is connected with a data transmission end of the aerosol fire-fighting system.

Compared with the prior art, the utility model has the following advantages:

firstly, the high-power direct-current charging pile can realize the quick charging of heavy new-energy freight logistics equipment and the electric power supplement in the transportation process.

Secondly, the output switch unit of the high-power direct-current charging pile transfers the direct-current electric energy converted by the charging module to the power battery, protects and controls the electrical safety of a direct-current charging loop, can also realize a power distribution circuit, can centralize all the charging modules into one charging gun according to the charging requirement, and can improve the power of a single gun by 1 time.

Thirdly, the human-computer interaction unit of the high-power direct-current charging pile can realize the human-computer interface interaction operation of the charging system, the information interaction function of an operator and the charging system is completed, and the touch screen is designed in an inclined arrangement mode and is prevented from being reflected by strong light;

fourthly, the power conversion unit of the high-power direct-current charging pile is matched with a charging module of a totally-enclosed shell, so that the service life in a severe environment is prolonged;

fifthly, large electrical elements such as a molded case circuit breaker and an alternating current contactor of the high-power direct current charging pile are laterally arranged, so that the installation space is saved;

and sixthly, an aerosol fire extinguishing device and a temperature sensor are arranged on the top of the electrical cabinet of the high-power direct-current charging pile, the temperature in the cabinet is detected through the temperature sensor, the temperature sensor is communicated with the charging controller, and when the detected temperature is higher than the set temperature, the aerosol fire extinguishing device is started, so that the purposes of protecting electrical elements and extinguishing open fire are achieved.

Drawings

FIG. 1 is a schematic diagram of a circuit structure of a high-power DC charging pile;

FIG. 2 is a schematic diagram of a circuit structure of a power input unit;

FIG. 3 is a schematic diagram of a circuit structure of a power conversion unit;

FIG. 4 is a schematic circuit diagram of an output switch unit

FIG. 5 is a schematic circuit diagram of the charge control unit;

FIG. 6 is a schematic circuit diagram of a human-computer interaction unit;

FIG. 7 is a schematic diagram of the circuit structure of the fire extinguishing unit;

FIG. 8 is a schematic diagram of the structural arrangement of the human-computer interaction unit;

FIG. 9 is a schematic diagram of the structural arrangement of the power input unit and the power conversion unit;

fig. 10 is a schematic diagram of the structural arrangement of the output switch unit and the charging control unit;

in the figure: the intelligent charging system comprises a power supply input unit 1 (a plastic shell circuit breaker 1.1, an alternating current contactor 1.2 and an alternating current copper bar 1.3), a power conversion unit 2 (a charging module group 2.1 and a cooling fan 2.2), an output switch unit 3 (a non-polar direct current contactor 3.1, a first fuse 3.2, a second fuse 3.3, a first direct current contactor 3.4, a second direct current contactor 3.5 and a copper bar 3.6), a charging control unit 4 (a first circuit breaker 4.1, a second circuit breaker 4.2, a lightning protection device 4.3, a switching power supply 4.4, a charging controller 4.5, an intermediate relay 4.6, an electric leakage monitoring device 4.7, an insulation monitoring device 4.8, an ammeter 4.9 and a 4G communication module 4.10), a human-computer interaction unit 5 (an emergency stop switch 5.1, an indicator lamp 5.2, a touch screen 5.3, a card reader 5.4, a charging gun 5.5), a fire extinguishing unit 6 (an aerosol 6.1 and a temperature sensor 6.2) and a charging vehicle.

Detailed Description

The present invention will be described in detail with reference to the following examples, which are not intended to limit the scope of the present invention. While the advantages of the utility model will be apparent and readily appreciated by the description.

As shown in fig. 1, the high-power direct-current charging pile comprises a power supply input unit 1, a power conversion unit 2, an output switch unit 3, a charging control unit 4, a human-computer interaction unit 5 and a fire-fighting unit 6; the alternating current power supply output end of the power supply input unit 1 is connected with the alternating current power supply input end of the power conversion unit 2, the direct current power supply output end of the power conversion unit 2 is connected with the direct current power supply input end of the output switch unit 3, and the direct current power supply output end of the output switch unit 3 is connected with the direct current power supply input end of the charging power supply vehicle 7; the signal transmission end of the charging control unit 4 is respectively connected with the signal transmission ends of the power supply input unit 1, the power conversion unit 2, the output switch unit 3 and the human-computer interaction unit 5. And the signal transmission end of the fire-fighting unit 6 is connected with the signal transmission end of the charging control unit 4.

As shown in fig. 2 and 9, the power input unit 1 includes a molded case circuit breaker 1.1, an ac contactor 1.2, and an ac copper bar 1.3, and the molded case circuit breaker 1.1, the ac contactor 1.2, and the ac copper bar 1.3 are all disposed on a mounting plate behind and below the charging pile cabinet body; the wire inlet of the molded case circuit breaker 1.1 is connected with an external alternating current power supply, and the external alternating current power supply adopts a 380V external alternating current power supply. The outlet of the plastic shell circuit breaker 1.1 is connected with the inlet of the AC contactor 1.2, the outlet of the AC contactor 1.2 is connected with the inlet of the AC copper bar 1.3, and the outlet of the AC copper bar 1.3 is respectively connected with the inlets of the power conversion unit 2 and the charging control unit 4. The whole is arranged laterally, so that the installation space is saved; the power supply input unit is mainly used for protecting the electrical safety of the alternating current input part of the system and providing power supply control for the power conversion unit.

As shown in fig. 3 and 9, the power conversion unit 2 includes a charging module group 2.1 and a heat dissipation fan 2.2, and the charging module group 2.1 is formed by connecting a plurality of charging modules in parallel; the charging module group 2.1 and the cooling fan 2.2 are arranged at the rear upper part of the charging pile cabinet body; the inlet ports of the charging module group 2.1 and the cooling fan 2.2 are respectively connected with the outlet port of the power supply input unit 1, and the outlet port of the charging module group 2.1 is connected with the output switch unit 3. The cooling fan works when the charging module group operates; the power conversion unit is mainly used for converting alternating current electric energy provided by a power grid into controllable direct current electric energy, and providing the direct current electric energy for the power battery according to the required voltage and current of the battery management system BMS. The system is output by a plurality of charging modules in parallel, the number can be configured by oneself, and the charging modules are totally closed shells, prolongs the service life in the adverse circumstances.

As shown in fig. 4 and 10, the output switch unit 3 includes a non-polarity dc contactor 3.1, a first fuse 3.2, a second fuse 3.3, a first dc contactor 3.4, a second dc contactor 3.5 and a plurality of copper bars 3.6, the non-polarity dc contactor 3.1, the first fuse 3.2, the second fuse 3.3, the first dc contactor 3.4, the second dc contactor 3.5 and the plurality of copper bars 3.6 are disposed on a mounting plate in front of and below the charging pile cabinet.

A first wire outlet of the non-polar direct current contactor 3.1 is connected with a wire inlet of the first fuse 3.2 through a copper bar 3.6, and a second wire outlet of the non-polar direct current contactor 3.1 is connected with a wire inlet of the second fuse 3.3 through the copper bar 3.6; the wire outlet of the first fuse 3.2 is connected with the wire inlet of the first direct current contactor 3.4 through a copper bar 3.6, and the second fuse 3.3 is connected with the wire inlet of the second direct current contactor 3.5 through the copper bar 3.6; the outlet ports of the first direct current contactor 3.4 and the second direct current contactor 3.5 are respectively connected with the inlet port of the man-machine interaction unit 5. The output switch unit is mainly used for transmitting the direct current electric energy converted by the charging module to the power battery and protecting and controlling the electrical safety of the direct current charging loop; a power distribution circuit is arranged, and all charging modules can be integrated into one charging gun according to the charging requirements.

As shown in fig. 5 and 10, the charging control unit 4 includes a first circuit breaker 4.1, a second circuit breaker 4.2, a lightning arrester 4.3, a switching power supply 4.4, a charging controller 4.5, an intermediate relay 4.6, an electric leakage monitoring device 4.7, an insulation monitoring device 4.8, an electric meter 4.9, and a 4G communication module 4.10; the first circuit breaker 4.1, the second circuit breaker 4.2, the lightning protection device 4.3, the switching power supply 4.4, the charging controller 4.5, the intermediate relay 4.6, the electric leakage monitoring device 4.7, the insulation monitoring device 4.8, the electric meter 4.9 and the 4G communication module 4.10 are arranged in the front upper part of the charging pile cabinet body;

the wire inlets of the first circuit breaker 4.1 and the second circuit breaker 4.2 are respectively connected with the wire outlet of the molded case circuit breaker 1.1, the wire outlet of the first circuit breaker 4.1 is connected with the wire inlet of the lightning arrester 4.3, and the PE port of the lightning arrester 4.3 is connected with the ground wire; an outlet of the second circuit breaker 4.2 is connected with an alternating current inlet of a switch power supply 4.4, and an outlet of the switch power supply 4.4 is respectively connected with inlets of a charging controller 4.5, an intermediate relay 4.6, a leakage monitoring device 4.7, an insulation monitoring device 4.8, an ammeter 4.9 and a 4G communication module 4.10; the charging controller 4.5 communicates with an external remote maintenance platform through a 4G communication module 4.10.

The control signal transmission end of the charging controller 4.5 is connected with the control signal transmission ends of the alternating current contactor 1.2, the charging module group 2.1, the non-polarity direct current contactor 3.1, the first direct current contactor 3.4 and the second direct current contactor 3.5 respectively. The charging controller is communicated with the insulation monitoring device, the electric leakage monitoring device and the electric meter, performs electric logic control through the intermediate relay, and transmits monitoring data to the remote operation and maintenance platform through the 4G communication module. The charging control unit is mainly used for unified management of all units of the system, functions of human-computer interface interaction operation of the charging system, setting and coordinated operation of all functional units, monitoring of system running states, uploading and issuing of running data and the like are achieved, a remote management function is achieved, and the charging control unit can be selectively connected with upper-level equipment through a standard protocol to achieve remote monitoring.

As shown in fig. 6 and 8, the human-computer interaction unit 5 comprises an emergency stop switch 5.1, an indicator light 5.2, a touch screen 5.3, a card reader 5.4 and a charging gun 5.5, wherein the emergency stop switch 5.1, the indicator light 5.2, the touch screen 5.3 and the card reader 5.4 are arranged on a surface shell of the charging pile cabinet body, and the charging guns 5.5 are arranged on two sides of the charging pile cabinet body; the signal transmission ends of the emergency stop switch 5.1, the indicator lamp 5.2, the touch screen 5.3, the card reader 5.4 and the charging gun 5.5 are respectively connected with the signal transmission end of the charging controller 4.5, and the power supply end of the charging gun 5.5 is connected with the power supply end of the output switch unit 3. The human-computer interaction unit is mainly used for realizing human-computer interface interaction operation of the charging system and finishing the information interaction function of an operator and the charging system; the touch screen is installed in an inward inclined mode, and therefore the situation that strong light reflection causes unclear display is avoided.

As shown in fig. 7, the fire-fighting unit 6 includes an aerosol fire-extinguishing system 6.1 and a temperature sensor 6.2, and the aerosol fire-extinguishing system 6.1 is arranged at the top of the charging pile cabinet; the signal transmission end of the aerosol fire extinguishing system 6.1 is connected with the signal transmission end of the charging controller 4.5. The data transmission end of the temperature sensor 6.2 is connected with the data transmission end of the aerosol fire extinguishing system 6.1. Detect the interior temperature of cabinet through temperature sensor, communicate with charge controller simultaneously, start aerosol extinguishing device when the detected temperature is higher than the settlement temperature, reach the purpose of protection electrical component and putting out the naked light.

The above description is only an embodiment of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention, and the rest that is not described in detail is the prior art.

Claims

1. The utility model provides a high-power direct current fills electric pile which characterized in that: the device comprises a power supply input unit (1), a power conversion unit (2), an output switch unit (3), a charging control unit (4) and a human-computer interaction unit (5);

the alternating current power supply output end of the power supply input unit (1) is connected with the alternating current power supply input end of the power conversion unit (2), the direct current power supply output end of the power conversion unit (2) is connected with the direct current power supply input end of the output switch unit (3), and the direct current power supply output end of the output switch unit (3) is connected with the direct current power supply input end of the charging power supply vehicle (7);

and the signal transmission end of the charging control unit (4) is respectively connected with the signal transmission ends of the power supply input unit (1), the power conversion unit (2), the output switch unit (3) and the human-computer interaction unit (5).

2. The high-power direct-current charging pile according to claim 1, characterized in that: the charging control device is characterized by further comprising a fire-fighting unit (6), wherein the signal transmission end of the fire-fighting unit (6) is connected with the signal transmission end of the charging control unit (4).

3. The high-power direct-current charging pile according to claim 2, characterized in that: the power supply input unit (1) comprises a molded case circuit breaker (1.1), an alternating current contactor (1.2) and an alternating current copper bar (1.3), wherein the molded case circuit breaker (1.1), the alternating current contactor (1.2) and the alternating current copper bar (1.3) are all arranged on a mounting plate at the rear lower part of the charging pile cabinet body;

the inlet wire of moulded case circuit breaker (1.1) is connected with outside alternating current power supply, the outlet wire of moulded case circuit breaker (1.1) is connected with the inlet wire of alternating current contactor (1.2), the outlet wire of alternating current contactor (1.2) is connected with the inlet wire of alternating current copper bar (1.3), the outlet wire of alternating current copper bar (1.3) is connected with the inlet wire of power conversion unit (2), charging control unit (4) respectively.

4. The high-power direct-current charging pile according to claim 3, characterized in that: the power conversion unit (2) comprises a charging module group (2.1) and a cooling fan (2.2), wherein the charging module group (2.1) is formed by connecting a plurality of charging modules in parallel; the charging module group (2.1) and the cooling fan (2.2) are arranged at the rear upper part of the charging pile cabinet body;

the charging module group (2.1) and the cooling fan (2.2) are respectively connected with the wire outlet of the power supply input unit (1), and the wire outlet of the charging module group (2.1) is connected with the output switch unit (3).

5. The high-power direct-current charging pile according to claim 4, characterized in that: the output switch unit (3) comprises a non-polar direct current contactor (3.1), a first fuse (3.2), a second fuse (3.3), a first direct current contactor (3.4), a second direct current contactor (3.5) and a plurality of copper bars (3.6), wherein the non-polar direct current contactor (3.1), the first fuse (3.2), the second fuse (3.3), the first direct current contactor (3.4), the second direct current contactor (3.5) and the plurality of copper bars (3.6) are arranged on a mounting plate in front of and below the charging pile cabinet body;

a first wire outlet of the non-polar direct current contactor (3.1) is connected with a wire inlet of the first fuse (3.2) through a copper bar (3.6), and a second wire outlet of the non-polar direct current contactor (3.1) is connected with a wire inlet of the second fuse (3.3) through the copper bar (3.6);

the wire outlet of the first fuse (3.2) is connected with the wire inlet of the first direct current contactor (3.4) through a copper bar (3.6), and the second fuse (3.3) is connected with the wire inlet of the second direct current contactor (3.5) through the copper bar (3.6);

and the outlet ports of the first direct current contactor (3.4) and the second direct current contactor (3.5) are respectively connected with the inlet port of the human-computer interaction unit (5).

6. The high-power direct-current charging pile according to claim 5, characterized in that: the charging control unit (4) comprises a first circuit breaker (4.1), a second circuit breaker (4.2), a lightning protection device (4.3), a switching power supply (4.4), a charging controller (4.5), an intermediate relay (4.6), an electric leakage monitoring device (4.7), an insulation monitoring device (4.8), an electric meter (4.9) and a 4G communication module (4.10);

the first circuit breaker (4.1), the second circuit breaker (4.2), the lightning protection device (4.3), the switching power supply (4.4), the charging controller (4.5), the intermediate relay (4.6), the electric leakage monitoring device (4.7), the insulation monitoring device (4.8), the electric meter (4.9) and the 4G communication module (4.10) are arranged above and in front of the charging pile cabinet body;

the wire inlets of the first circuit breaker (4.1) and the second circuit breaker (4.2) are respectively connected with the wire outlet of the molded case circuit breaker (1.1), the wire outlet of the first circuit breaker (4.1) is connected with the wire inlet of the lightning arrester (4.3), and the PE port of the lightning arrester (4.3) is connected with the ground wire;

an outlet of the second circuit breaker (4.2) is connected with an alternating current inlet of a switch power supply (4.4), and outlets of the switch power supply (4.4) are respectively connected with inlets of a charging controller (4.5), an intermediate relay (4.6), a leakage monitoring device (4.7), an insulation monitoring device (4.8), an ammeter (4.9) and a 4G communication module (4.10);

and the charging controller (4.5) is communicated with an external remote maintenance platform through a 4G communication module (4.10).

7. The high-power direct-current charging pile according to claim 6, characterized in that: and the control signal transmission end of the charging controller (4.5) is respectively connected with the control signal transmission ends of the alternating current contactor (1.2), the charging module group (2.1), the nonpolar direct current contactor (3.1), the first direct current contactor (3.4) and the second direct current contactor (3.5).

8. The high-power direct-current charging pile according to any one of claims 1-7, characterized in that: the human-computer interaction unit (5) comprises an emergency stop switch (5.1), an indicator light (5.2), a touch screen (5.3), a card reader (5.4) and a charging gun (5.5), wherein the emergency stop switch (5.1), the indicator light (5.2), the touch screen (5.3) and the card reader (5.4) are arranged on a surface shell of the charging pile cabinet body, and the charging gun (5.5) is arranged on two sides of the charging pile cabinet body;

the signal transmission ends of the emergency stop switch (5.1), the indicator lamp (5.2), the touch screen (5.3), the card reader (5.4) and the charging gun (5.5) are respectively connected with the signal transmission end of the charging controller (4.5), and the power supply end of the charging gun (5.5) is connected with the power supply end of the output switch unit (3).

9. The high-power direct-current charging pile according to any one of claims 2-7, characterized in that: the fire-fighting unit (6) comprises an aerosol fire-fighting system (6.1), and the aerosol fire-fighting system (6.1) is arranged at the top of the charging pile cabinet body;

and the signal transmission end of the aerosol fire extinguishing system (6.1) is connected with the signal transmission end of the charging controller (4.5).

10. The high-power direct-current charging pile according to claim 9, characterized in that: the fire-fighting unit (6) further comprises a temperature sensor (6.2), and the data transmission end of the temperature sensor (6.2) is connected with the data transmission end of the aerosol fire-fighting system (6.1).