CN212827943U

CN212827943U - Charging system and DC charging device

Info

Publication number: CN212827943U
Application number: CN202021534701.0U
Authority: CN
Inventors: 吕彦波; 齐红柱; 陈洪闯; 陈斌; 押思梦
Original assignee: Zhengzhou Senyuan New Energy Technology Co ltd
Current assignee: Zhengzhou Senyuan New Energy Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-30
Anticipated expiration: 2030-07-29

Abstract

The utility model relates to a charging system and direct current charging device. The direct current charging device comprises a charging cabinet body and a power module bin, wherein the power module is arranged in the power module bin; and a wire passing channel which is arranged in front of and behind the heat dissipation channel is arranged in the power module bin, and an alternating current conducting bar connected with the power module is arranged in the wire passing channel. The utility model discloses a set up the wire passing channel in the power module storehouse, can hold in the wire passing channel and exchange electrically conductive row, reduced and exchanged the influence of electrically conductive row to the heat dissipation channel windage, improved the radiating efficiency, exchange electrically conductive row setting simultaneously and also can avoid hot-blast direct-blow in the wire passing channel, improved and exchanged the life-span of electrically conductive row. The technical problems of low heat dissipation efficiency and short service life of the alternating current conducting bar caused by the fact that the alternating current conducting bar of the existing direct current charging device is arranged in the heat dissipation channel are solved.

Description

Charging system and DC charging device

Technical Field

The utility model relates to a charging system and direct current charging device.

Background

With the rapid popularization of electric vehicles, the demand of dc charging devices is also increasing. The power of direct current charging device is big more, calorific capacity is also big more, charging device's volume is also big more, present direct current charging device is far more to adopt air-cooled radiating mode, for example, the publication number is CN210258068U, the publication number is 2020.04.07's Chinese patent discloses an electric automobile fills electric pile with non-on-vehicle direct current, which comprises a housin, install the mounting panel in the casing, be equipped with the main control board on the mounting panel, the upper end of main control board is provided with switching power supply, auxiliary power source, mid-mounting has lightning protection device and miniature circuit breaker, direct current contactor and air inlet fuse are installed to the below of lightning protection device, the bottom of air inlet fuse is provided with the copper bar, direct current module and alternating current fan are still installed to the casing inner chamber, wherein direct current module is power module, there is the independent.

Fill electric pile's power module and be used for converting the alternating current into the direct current, provide direct current and charge, the alternating current leads electrical drainage and is connected with power module, draws forth through the direct current output line after converting into the direct current, the alternating current leads electrical drainage and arranges usually in power module's heat dissipation channel, because the alternating current leads electrical drainage and has four phases usually, occupation space is great, it is great to cause the interior windage of heat dissipation channel, reduce the radiating efficiency, the heat in the wind channel of dispelling the heat can make the life-span of alternating current lead electrical drainage shorter moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a direct current charging device, which is used for solving the technical problems of low heat dissipation efficiency and short service life of an alternating current conducting bar caused by the fact that the alternating current conducting bar of the current direct current charging device is arranged in a heat dissipation channel;

in addition, the present invention is also directed to a charging system using the dc charging device.

The utility model discloses a direct current charging device adopts following technical scheme:

the DC charging device includes:

a charging cabinet body;

the power module bin is arranged in the charging cabinet body, the left side and the right side of the power module bin are provided with openings so as to form a heat dissipation air channel extending left and right in the power module bin, and the left side plate and the right side plate of the charging cabinet body are both provided with heat dissipation ports opposite to the heat dissipation channel;

the power module is arranged in the power module bin;

and a wire passing channel which is arranged in front of and behind the heat dissipation channel is arranged in the power module bin, and an alternating current conducting bar connected with the power module is arranged in the wire passing channel.

Has the advantages that: the utility model discloses a set up the wire passing channel in the power module storehouse, can hold in the wire passing channel and exchange electrically conductive row, reduced and exchanged the influence of electrically conductive row to the heat dissipation channel windage, improved the radiating efficiency, exchange electrically conductive row setting simultaneously and also can avoid hot-blast direct-blow in the wire passing channel, improved and exchanged the life-span of electrically conductive row. The technical problems of low heat dissipation efficiency and short service life of the alternating current conducting bar caused by the fact that the alternating current conducting bar of the existing direct current charging device is arranged in the heat dissipation channel are solved.

Further, the power module storehouse includes the storehouse shell and sets up the baffle in the storehouse shell, and the baffle left and right sides direction extends, and both sides all have power module group around the baffle, and power module group is by from last two at least of arranging down the power module is constituteed, is equipped with the baffle bearing structure who is used for supporting power module on the baffle. The power modules are supported by the partition plates, so that the stability of the power module group is improved.

Furthermore, the number of the wire passing channels is at least two, wherein the front side of the heat dissipation channel is a front wire passing channel, the rear side of the heat dissipation channel is a rear wire passing channel, the alternating current conducting bar in the front wire passing channel is used for being connected with the power module on the front side of the partition plate, and the alternating current conducting bar in the rear wire passing channel is used for being connected with the power module on the rear side of the partition plate. The alternating current conductive row wires are supplied through the front wire passing channel and the rear wire passing channel, the layout is reasonable, and the structure is compact.

Further, the fan of the charging cabinet body is arranged between the rear wire passing channel and the front wire passing channel. Compact structure reduces the volume of the charging cabinet body.

Further, a direct current output line connected with the power module is fixed on the left side or the right side of the partition board. The direct current output line can be prevented from being directly blown by hot air, and meanwhile, the direct current output line is reduced to occupy a heat dissipation channel to reduce the heat dissipation efficiency.

Furthermore, the baffle includes preceding fixed plate, after-fixing board, fixes the fixed stand between preceding fixed plate and after-fixing board, and both ends all are equipped with the fixed plate turn-ups of turning over in opposite directions about preceding fixed plate and after-fixing board, and direct current output line fixes on the fixed plate turn-ups. The baffle is sandwich structure, and intensity is high, and stability is good, conveniently fixes the direct current output line through the fixed plate turn-ups.

Furthermore, a terminal fixing plate is arranged in the power module bin, two power modules of which the front side and the rear side are at the same height share the same terminal fixing plate, two alternating current wiring terminals and two direct current wiring terminals are arranged on the same terminal fixing plate, and the middle part of the terminal fixing plate is fixed with the partition plate. Two power modules share one terminal fixing plate, so that the number of the terminal fixing plates is reduced, and the assembly efficiency is improved.

Furthermore, the wire passing channel is a wire passing groove communicated with the heat dissipation channel. The wire passing groove facilitates installation of the alternating current conducting bar.

Furthermore, an alternating current incoming line connecting module connected with the alternating current conducting bar is arranged below the power module bin, a direct current connecting module connected with the power module is arranged below the power module bin, and the alternating current incoming line connecting module and the direct current connecting module are arranged in the front and back. Save space, reduce the volume of the cabinet body that charges.

The utility model discloses charging system's technical scheme:

the charging system comprises a direct current charging device and at least two charging piles connected with the direct current charging device, and the direct current charging device supplies power to the charging piles;

the DC charging device includes:

a charging cabinet body;

the power module is arranged in the power module bin;

Drawings

Fig. 1 is a schematic structural diagram of a dc charging device according to embodiment 1 of the present invention;

fig. 2 is another schematic structural diagram of the dc charging device according to embodiment 1 of the present invention;

fig. 3 is a schematic view of an assembly structure of a fan and an air outlet louver in the embodiment 1 of the dc charging device of the present invention;

fig. 4 is a schematic structural view of the dc charging device according to embodiment 1 of the present invention after hiding the right side plate and the front cabinet door;

fig. 5 is a schematic structural view of the dc charging device according to embodiment 1 of the present invention after the front cabinet door is hidden;

fig. 6 is a schematic structural view of the dc charging device according to embodiment 1 of the present invention after the rear cabinet door is hidden;

fig. 7 is a schematic view of the installation of the power module bin and the power module in embodiment 1 of the dc charging device of the present invention;

fig. 8 is a schematic structural diagram of a power module bin in embodiment 1 of the dc charging device of the present invention;

fig. 9 is a schematic structural view of a partition plate in the embodiment 1 of the dc charging device of the present invention;

fig. 10 is a schematic structural view of a rear side plate of a power module bin according to embodiment 1 of the present invention;

fig. 11 is an enlarged view of portion a of fig. 8 with respect to the mounted state of the dc output line clamp;

in the figure: 1-a charging cabinet body; 11-front cabinet door; 12-rear cabinet door; 13-left side panel; 14-right side plate; 15-front low-voltage device installation space; 16-rear low-voltage device installation space; 17-high voltage device installation space; 2-power module bin; 21-front wire passage; 22-rear wire passage; 23-a separator; 231-a front fixing plate; 232-rear fixing plate; 233-fixed column-; 234-fixing plate folding; 235-right flanging of the rear fixing plate; 236-right flange of front fixing plate; 237-left flanging of the front fixing plate; 238-left flanging of the rear fixing plate; 24-supporting the folded edge; 25-front side plate; 26-rear side plate; 27-ac busbar support; 28-alternating current conducting bar; 29-terminal fixing plate; 210-a dc output line clamp; 3, a fan; 4-air outlet shutter; 5-air inlet shutter; 6-a power module; 7-a main controller; 8-a metering unit; 9-a direct current connection module; 91-power distribution positive control board; 92-power distribution negative control board; 10-alternating current incoming line connecting module; 101-alternating current inlet wire fixing plate; 102-a surge protector; 103-an alternating current contactor; 104-molded case circuit breaker.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses direct current charging device's embodiment 1:

the direct current charging device in this embodiment is used for filling the electric pile power supply to a plurality of, has the rifle that charges on filling the electric pile, charges to electric automobile through the rifle that charges. In other embodiments, the direct current charging device can also be provided with a charging gun, and can directly supply power to the electric automobile.

As shown in fig. 1 to 3, the dc charging device includes a charging cabinet body 1, the charging cabinet body 1 includes a front cabinet door 11, a rear cabinet door 12, a left side plate 13 and a right side plate 14, a power module bin 2 extending from left to right is arranged in the charging cabinet body 1, both ends of the power module bin 2 are opened from left to right to form a heat dissipation channel extending from left to right in the power module bin 2, and heat dissipation ports opposite to both ends of the heat dissipation channel are arranged on the left side plate 13 and the right side plate 14. Wherein, the heat dissipation port on the right side plate 14 is an air outlet, and the air outlet is provided with a fan 3 for pumping away the heat in the power module bin 2. The heat dissipation port of the left side plate 13 is an air inlet, the air outlet and the air inlet are respectively provided with an air outlet shutter 4 and an air inlet shutter 5, and external cold air enters the heat dissipation channel through the air inlet shutter 5 and is discharged through the air outlet shutter 4 after exchanging heat with the power module 6 in the power module bin 2. Separate power module 6 and other components and parts through power module storehouse 2, improve the radiating efficiency, avoid simultaneously influencing other components and parts.

Fan 3 of air outlet department sets up the inboard of air outlet shutter 4, and air outlet shutter 4 inboard still is equipped with dustproof cotton, and in this embodiment, air outlet shutter 4 passes through the hinged mounting on right side board 14, and convenient the opening and closing is convenient for maintain fan 3 and dustproof cotton that air inlet shutter 5 also passes through the hinged mounting on left side board 13.

As shown in fig. 4 to 11, the power module bin 2 is surrounded by four side plates, the power modules 6 in the power module bin 2 are divided into two groups in front and back, and the two power module groups include ten power modules which are arranged in an up-down layered manner. In other embodiments, the number of power modules in the power module group may be any number, such as two, three, four, etc. A partition plate 23 is arranged in the power module bin 2, the partition plate 23 partitions the power module bin from front to back, and the two power module groups are respectively arranged on the left side and the right side of the partition plate 23. The front side plate 25 and the rear side plate 26 of the power module bin 2 are both provided with supporting folding edges 24 for supporting the power modules 6, and the supporting folding edges 24 and the side plates of the power module bin 2 are integrally formed, so that the processing efficiency of the side plates is improved.

A direct current connection module 9 and an alternating current incoming line connection module 10 are arranged below the power module bin, the alternating current incoming line connection module 10 is connected with the power module 6 through an alternating current conducting bar, and the direct current connection module 9 is connected with the power module 6 through a direct current output line. In order not to affect the heat dissipation of the power module 6 in the power module bin 2, in this embodiment, the front side and the rear side of the heat dissipation channel in the power module bin 2 are respectively provided with a front wire passing channel 21 and a rear wire passing channel 22, and the front wire passing channel 21 and the rear wire passing channel 22 are wire passing grooves extending up and down and are both communicated with the power module bin 2. Alternating current conducting bar supports 27 are arranged in the front wire passing channel 21 and the rear wire passing channel 22, the alternating current conducting bars 28 are fixed on the alternating current conducting bar supports 27, the alternating current conducting bars 28 are arranged in the wire passing channels, the space of a heat dissipation channel is not occupied, wind resistance is reduced, and meanwhile the influence of heat in the power module bin 2 on the alternating current conducting bars can be reduced. The fan sets up in the space between preceding wire passing channel 21 and back wire passing channel 22, makes the internal space of the cabinet body that charges compacter, reduces the volume of the cabinet body that charges.

In this embodiment, the power module 6 on the front side of the partition 23 is connected to the ac power strip 28 in the front wiring channel 21, the power module 6 on the front side of the partition 23 shares the ac power strip 28 in the front wiring channel, the power module 6 on the rear side of the partition 23 is connected to the ac power strip in the rear wiring channel, the power module 6 on the rear side of the partition 23 shares the ac power strip 28 in the rear wiring channel, the dc output lines of the power modules are all connected to the dc connection module 9 from the right side of the partition 23 downward, the wiring layout is reasonable, the heat dissipation of the heat dissipation channel is not affected, and meanwhile, the influence of heat on the ac power strip is reduced.

The partition 23 includes a front fixing plate 231, a rear fixing plate 232, and two fixing posts 233 fixed between the front fixing plate 231 and the rear fixing plate 232, the fixing posts 233 are posts having a C-shaped cross section, the two fixing posts 233 are disposed, and the two fixing posts 233 are disposed at left and right intervals. The front fixing plate 231 and the rear fixing plate 232 are both provided with fixing plate flanges 234 for supporting the power modules, and the fixing plate flanges constitute a partition supporting structure for supporting the power modules.

As shown in fig. 8 to 11, the left and right ends of the front fixing plate 231 and the rear fixing plate 232 are respectively provided with fixing plate flanges which are turned over in opposite directions, the fixing plate flanges on the front fixing plate 231 are turned over in the backward direction, and the fixing plate flanges on the rear fixing plate 232 are turned over in the forward direction. The fixed plate flanging at the right end of the front fixed plate is a front fixed plate right flanging 236, the fixed plate flanging at the left end is a front fixed plate left flanging 237, the fixed plate flanging at the right end of the rear fixed plate is a rear fixed plate right flanging 235, and the fixed plate flanging at the left end is a rear fixed plate left flanging 238. Wherein, the right flange 235 of the rear fixing plate is provided with a DC output wire clamp 210 for fixing a DC output wire. The dc output cable clamp 210 is fixed to the rear fixing plate right flange 235 by screws.

In this embodiment, a terminal fixing plate 29 is further disposed in the power module bin 2, two ends of the terminal fixing plate 29 are respectively fixed to the front side plate and the rear side plate of the power module bin, the middle portion of the terminal fixing plate is fixed to the partition 23, the front fixing plate right flange 236 and the rear fixing plate right flange 235 are both fixed to the terminal fixing plate, and the terminal fixing plate and the dc output line clamp share a fixing hole in the rear fixing plate right flange 235. The front fixing plate left flange 237 and the rear fixing plate left flange 238 are provided with screw holes for fixing the power module.

Set up four terminals, two direct current binding post and two exchange binding post on the terminal fixed plate 29 in this embodiment, a power module corresponds a direct current binding post and an exchange binding post, and direct current binding post and direct current output line are connected. In this embodiment, after the power module is mounted, the through hole at the supporting flange 24 and the through hole at the fixing plate flange 234 are covered by the housing of the power module 6, and the terminal fixing plate 29 seals the space between the upper and lower layers of the power module 6, so that the airflow passes through the power module 6 as much as possible, thereby improving the heat dissipation efficiency.

For the convenience of maintenance, high-voltage devices and low-voltage devices are installed in different areas in the charging cabinet body 1. As shown in fig. 4 to 7, a front low-voltage device installation space 15 for installing low-voltage devices is provided between the power module bin 2 and the front cabinet door 11, a rear low-voltage device installation space 16 for installing low-voltage devices is provided between the power module bin 2 and the rear cabinet door 12, and a high-voltage device installation space 17 for installing high-voltage devices is provided between the lower side of the power module 6 and the bottom plate of the charging cabinet 1. The front wire passing channel 21 is arranged left and right from the front low-voltage device mounting space 15 and is separated by a bin wall of the power module bin. The rear wire passage 22 is arranged left and right from the rear low-voltage device installation space 16 and is partitioned by the bulkhead of the power module compartment.

The low-voltage device partial shipment is in preceding low-voltage device installation space 15 and back low-voltage device installation space 16, and the high-voltage device is installed at high-voltage device installation space 17, and main control unit 7 is installed to preceding low-voltage device installation space 15, and metering unit 8 is installed to back low-voltage device installation space 16, and high-voltage device installation space 17 is installed and is exchanged inlet wire connecting module 10 and be used for being connected with exchanging inlet wire and power module, and this overall arrangement is after opening preceding cabinet door and back cabinet door, main control unit 7 and metering unit 8 are maintained in alright convenient observation. Through making high-voltage device and low-voltage device subregion arrange in the charging cabinet body 1, improved charging device routine maintenance's security. The alternating current incoming line connecting module 10 is arranged in the high-voltage device mounting space 17, so that a cable can be conveniently connected from the bottom, and outgoing lines can be conveniently connected.

In this embodiment, the ac incoming line connection module 10 includes an ac incoming line fixing plate 101, a surge protector 102, an ac contactor 103, a connection copper bar, and a molded case circuit breaker 104. The dc link module 9 includes a power distribution positive electrode control board 91 and a power distribution negative electrode control board 92.

The direct current connection module 9 is located at the rear side of the alternating current incoming line connection module 10, so that outgoing lines connected with the direct current connection module 9 can be conveniently led out from the rear side of the charging cabinet body 1, and the power distribution positive control board 91 and the power distribution negative control board 92 are installed back to back in the front-rear direction, so that the arrangement in the high-voltage device installation space 17 is more compact. The power distribution positive control board 91 and the power distribution negative control board 92 are provided with copper bars in one-to-one correspondence, and the two control boards are also provided with a direct current contactor 93, a direct current contactor mounting board and an insulator support. The power distribution positive control board 91 and the power distribution negative control board 92 can control the output power according to the power demand of the rear end, and this part of the structure is the prior art and will not be described herein.

The utility model discloses a direct current charging device has concentrated according to the function and has placed power module 6, primary device and secondary device, and the structure is compacter, and it is convenient to maintain.

The utility model discloses an in-process of direct current charging device at the assembly, the alternating current inlet wire is introduced from 1 bottom of the charging cabinet body, be connected with moulded case circuit breaker's incoming line terminal, moulded case circuit breaker's leading-out terminal and alternating current contactor's incoming line terminal are connected through connecting the copper bar, it is connected with surge protector to connect wiring on the copper bar simultaneously, alternating current contactor's leading-out terminal passes through cable junction and leads electrical drainage in the alternating current, it is connected to power module 6's alternating current binding post to lead electrical drainage in the alternating current, power module 6's direct current binding post connects the back, positive terminal is connected to on the anodal control panel 91 of power distribution, negative terminal. The controller controls the output power by controlling the dc contactor 93 on the control board.

The utility model discloses a DC charging device's concrete embodiment 2, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: in this embodiment, the dc link module is disposed above the power module bin. In other embodiments, the ac incoming line connection module may also be disposed at the front side of the power module bin, and the dc connection module is disposed at the upper side of the ac incoming line connection module.

The utility model discloses a DC charging device's concrete embodiment 3, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: in this embodiment, a wire passing cylinder is arranged on the front side of the power module bin, the wire passing channel is arranged in the wire passing cylinder, and the wire passing channel is separated from the installation space of the front low-voltage device through the wire passing cylinder. Similarly, in other embodiments, the rear side of the power module bin may also be provided with a wire passing barrel instead of the wire passing groove.

The utility model discloses a DC charging device's concrete embodiment 4, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: in this embodiment, only one power module group is disposed in the power module bin, at this time, there is no partition board in the bin shell, and only one wire passing channel is disposed. In other embodiments, three power module groups may be provided as needed, and there are two partition plates.

The utility model discloses a DC charging device's concrete embodiment 5, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: the direct current connection module is positioned on the front side of the alternating current inlet wire connection module. In other embodiments, the dc connection module and the ac incoming line connection module may be arranged side to side or top to bottom.

The utility model discloses a direct current charging device's concrete embodiment 6, direct current charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: in this embodiment, the dc charging device is configured to output a constant power, and at this time, the high-voltage device installation space does not have a power distribution positive electrode control board and a power distribution negative electrode control board.

The utility model discloses a DC charging device's concrete embodiment 7, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: in this embodiment, the fan setting of the cabinet body that charges is in the left side in power module storehouse.

The utility model discloses a DC charging device's concrete embodiment 8, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: the baffle is the individual layer fixed plate, installs fixed folded plate additional this moment on the baffle for support power module.

The utility model discloses a DC charging device's concrete embodiment 9, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: in this embodiment, the dc output line is fixed to the left side of the partition plate, and the wire passage and the terminal fixing plate are located on the left side of the charging module.

The utility model discloses a DC charging device's concrete embodiment 10, DC charging device's in this embodiment's structure only lies in with the difference of above-mentioned embodiment: the terminal fixing plates correspond to the power modules one to one.

The utility model discloses a specific embodiment of charging system, fill electric pile including direct current charging device and two at least that are connected with direct current charging device, direct current charging device is to filling the electric pile power supply, wherein direct current charging device's structure and an arbitrary embodiment of above-mentioned direct current charging device in the structure the same, no longer describe repeatedly.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A dc charging device comprising:

a charging cabinet body;

the power module is arranged in the power module bin;

it is characterized in that the preparation method is characterized in that,

2. The direct current charging device according to claim 1, wherein the power module compartment comprises a compartment housing and a partition board disposed in the compartment housing, the partition board extends in a left-right direction, the partition board has power module groups on both front and rear sides, the power module groups are composed of at least two power modules arranged from top to bottom, and a partition board support structure for supporting the power modules is disposed on the partition board.

3. The direct current charging device according to claim 2, wherein the number of the wire passing channels is at least two, wherein the front wire passing channel is located on the front side of the heat dissipation channel, the rear wire passing channel is located on the rear side of the heat dissipation channel, the alternating current conducting bar in the front wire passing channel is used for being connected with the power module on the front side of the partition board, and the alternating current conducting bar in the rear wire passing channel is used for being connected with the power module on the rear side of the partition board.

4. The direct current charging device according to claim 3, wherein the fan of the charging cabinet body is disposed between the rear wire passage and the front wire passage.

5. The dc charging apparatus of claim 2, wherein the dc output line to which the power module is connected is fixed to the left or right side of the partition.

6. The direct-current charging device according to claim 5, wherein the partition comprises a front fixing plate, a rear fixing plate, and a fixing post fixed between the front fixing plate and the rear fixing plate, wherein fixing plate flanges folded in opposite directions are provided at both left and right ends of the front fixing plate and the rear fixing plate, and the direct-current output line is fixed on the fixing plate flanges.

7. The direct-current charging device according to any one of claims 2 to 6, wherein a terminal fixing plate is arranged in the power module bin, wherein two power modules at the same height on the front side and the rear side of the partition share one terminal fixing plate, two alternating-current terminals and two direct-current terminals are arranged on one terminal fixing plate, and the middle part of the terminal fixing plate is fixed with the partition.

8. The direct-current charging device according to any one of claims 1 to 6, wherein the wire passage channel is a wire passage slot which is communicated with the heat dissipation channel.

9. The direct current charging device according to any one of claims 1 to 6, wherein an alternating current incoming line connection module connected to the alternating current conducting bar is disposed below the power module compartment, a direct current connection module connected to the power module is disposed below the power module compartment, and the alternating current incoming line connection module and the direct current connection module are arranged in front of and behind each other.

10. Charging system comprising a dc charging device and at least two charging posts connected to the dc charging device, the dc charging device supplying power to the charging posts, characterized in that the dc charging device is a dc charging device according to any of claims 1-9.