CN221009857U - Power supply cabinet - Google Patents

Abstract

The utility model discloses a power supply cabinet which comprises a cabinet body, a converter device, an energy storage device, a first connecting device and a second connecting device, wherein the converter device is connected with the cabinet body; the energy storage device is connected in parallel with the first connecting device through the first connecting piece, and the current conversion device is connected in parallel with the first connecting device through the second connecting piece. The current transformer and the energy storage device have short wiring distance and are convenient to wire.

Description

Power supply cabinet

Technical Field

The utility model relates to the technical field of power supply, in particular to a power supply cabinet.

Background

Currently, UPS is widely used. In the event of mains anomalies, the UPS is typically switched to a battery-powered state to ensure uninterrupted power supply to the load. The UPS generally includes an energy storage device and a current transformer, which are electrically connected, but the existing energy storage device and current transformer are two independent devices, and an electrical connection cable between the two devices is long, and the connection is inconvenient.

Disclosure of utility model

The utility model aims to overcome the defects or problems in the background art and provide a power supply cabinet, wherein the wiring distance between a current transformer and an energy storage device is short, and the wiring is convenient.

To achieve the above object, the present utility model and its related embodiments adopt the following technical solutions, but are not limited to the following solutions:

The first technical scheme and related embodiments thereof relate to a power supply cabinet, which comprises a cabinet body, wherein the cabinet body is provided with a first accommodating area, a second accommodating area and a third accommodating area, the second accommodating area is adjacent to the first accommodating area and the third accommodating area, the first accommodating area is provided with at least one accommodating channel, and the third accommodating area is provided with a plurality of mounting channels; the current transformation device comprises current transformation modules, the number of which is equal to that of the accommodating channels, each current transformation module is accommodated in each accommodating channel in a one-to-one correspondence manner, and each current transformation module is provided with a battery end; the energy storage device comprises direct current power supply modules, the number of which is equal to that of the mounting channels, the direct current power supply modules are correspondingly accommodated in the mounting channels one by one, and each direct current power supply module is provided with an electric connection end; the first connecting device is arranged in the second accommodating area and is provided with a first connecting end and a second connecting end which are electrically connected with each other; the second connecting device comprises first connecting pieces and second connecting pieces, the number of the first connecting pieces is equal to that of the direct current power supply modules, the second connecting pieces are equal to that of the current transformation modules, the first connecting pieces are correspondingly connected to one end of each mounting channel one by one, and each first connecting piece is provided with a third connecting end corresponding to the electric connecting end; the third connecting ends are suitable for being spliced with the electric connecting ends of the corresponding direct current power supply modules when the corresponding direct current power supply modules are installed in place, and each third connecting end is connected with the second connecting end in parallel; each second connecting piece is correspondingly connected to one end of each accommodating channel one by one, each second connecting piece is provided with a fourth connecting end corresponding to the battery end, the fourth connecting ends are suitable for being spliced with the battery ends of the corresponding converter modules when the corresponding converter modules are installed in place, and each fourth connecting end is connected to the first connecting end in parallel.

The second technical scheme is based on the first technical scheme and is a preferred embodiment of the first technical scheme, wherein the current transformation module is further provided with a first signal connection end; each direct current power supply module is provided with a second signal connecting end; each first connecting piece is provided with a third signal connecting end corresponding to the second signal connecting end, and the third signal connecting ends are suitable for being spliced with the second signal connecting ends of the corresponding direct current power supply modules when the corresponding direct current power supply modules are installed in place; each second connecting piece is provided with a fourth signal connecting end corresponding to the first signal connecting end, and the fourth signal connecting ends are suitable for being spliced with the first signal connecting ends when the corresponding converter modules are installed in place; the first connecting device is also provided with a first signal switching end and a second signal switching end connected with the first signal switching end; each third signal connection end is communicated with the second signal transfer end; each fourth signal connection end is communicated with the first signal transfer end.

The third technical scheme is based on the first technical scheme, and is a preferred embodiment of the first technical scheme, wherein the first connecting piece and the second connecting piece have the same structure, the mounting channel is further suitable for accommodating the current transformation module, and the first connecting piece is further suitable for being spliced with the corresponding current transformation module when the corresponding current transformation module is mounted in place in the mounting channel and correspondingly adjusted to be connected with the first connecting end in parallel; the accommodating channel is further suitable for installing a direct current power supply module, and the second connecting piece is further suitable for being inserted into the corresponding direct current power supply module when the corresponding direct current power supply module is installed in place in the accommodating channel and correspondingly adjusted to be connected with the second connecting end in parallel.

A fourth technical solution is based on the first technical solution and is a preferred embodiment of the first technical solution, wherein the rear side of the installation channel and the rear side of the accommodating channel are both provided with installation pieces; the mounting channel is also suitable for accommodating a current transformation module; the accommodating channel is also suitable for installing a direct current power supply module; the mounting piece is suitable for being in clamping connection with the first connecting piece and the second connecting piece in a time-sharing mode, so that the current transformation module is contained in the mounting channel and is connected with the second connecting piece which is clamped in the mounting piece in a plugging mode when being mounted in place, and the direct current power supply module is contained in the containing channel and is connected with the first connecting piece which is clamped in the mounting piece in a plugging mode when being mounted in place.

A fifth technical aspect is based on the first technical aspect, and is a preferred embodiment of the first technical aspect, wherein the installation channel is further adapted to accommodate a current transformation module; the accommodating channel is also suitable for installing a direct current power supply module; each first connecting piece is also correspondingly connected to one end of each accommodating channel and is parallel to each second connecting piece along the width direction of the accommodating channel, and the first connecting piece is suitable for being inserted into the corresponding direct current power supply module when the corresponding direct current power supply module is accommodated in the accommodating channel and is installed in place; the second connecting pieces are correspondingly connected to one end of each mounting channel one by one and are parallel to the first connecting pieces along the width direction of the mounting channel, and the second connecting pieces are suitable for being inserted into the corresponding converter modules when the corresponding converter modules are accommodated in the mounting channels and mounted in place.

The sixth technical solution is based on the first technical solution, and is a preferred embodiment of the first technical solution, wherein the second connection device includes a plurality of connectors, each connector is disposed at one end of each installation channel and each receiving channel, each connector is provided with a first plug portion, a second plug portion, and a third plug portion, the first plug portion and the third plug portion form the first connection, and the second plug portion and the third plug portion form the second connection.

The seventh technical scheme is based on the first technical scheme, and is a preferred embodiment of the first technical scheme, wherein the first accommodating area, the second accommodating area and the third accommodating area are sequentially arranged along the vertical direction; each mounting channel is distributed along a horizontal first direction to form at least two mounting groups, each mounting group comprises a plurality of mounting channels distributed along a vertical direction, and each mounting channel extends along a horizontal second direction perpendicular to the first direction; the second connecting ends comprise second sub-connecting ends which are equal to the mounting groups in number, and each second sub-connecting end is distributed along the first direction and is electrically connected with the first connecting end; the third connecting ends of the first connecting pieces corresponding to each installation group are connected with the corresponding second sub-connecting ends in a tandem mode.

An eighth technical solution is based on the second technical solution, and is a preferred embodiment of the second technical solution, wherein the apparatus further includes a controller accommodated in the second accommodating area; the controller is connected with the first signal switching end and the second signal switching end to acquire the power requirement of the load, receives the operation information of each current transformation module and the operation information of each direct current power supply module, and distributes the working targets of each current transformation module and the working targets of each direct current power supply module according to the power requirement of the load.

The ninth technical scheme is based on the eighth technical scheme, and is a preferred embodiment of the eighth technical scheme, wherein each direct current power supply module comprises an energy storage unit, a first DC/DC conversion unit and a second DC/DC conversion unit, the low-voltage sides of the first DC/DC conversion unit and the second DC/DC conversion unit are connected to the energy storage unit, and the high-voltage sides are provided with an anode and a cathode and are connected with an electric connection end; the controller is suitable for sending target information to the direct current power supply module when the energy storage device is in a discharging state and the operation information of the converter device changes so that the first DC/DC conversion unit and the second DC/DC conversion unit can be switched in series and parallel.

A tenth technical solution is based on the ninth technical solution and is a preferred embodiment of the ninth technical solution, wherein each DC power supply module further includes a series-parallel switching module, and the high voltage sides of the first DC/DC conversion unit and the second DC/DC conversion unit are connected to the electrical connection terminal through the series-parallel switching modules, and output voltages of the first DC/DC conversion unit and the second DC/DC conversion unit are equal; the serial-parallel switching module is connected with the second signal connecting end; the electric connection end comprises an anode output end, a cathode output end and a neutral line output end; the positive electrode output end is connected to the positive electrode of the first DC/DC conversion unit, and the negative electrode output end is connected to the negative electrode of the second DC/DC conversion unit; the series-parallel switching module comprises a first switch used for connecting the first DC/DC conversion unit and the second DC/DC conversion unit in series, a second switch used for connecting the anodes of the first DC/DC conversion unit and the second DC/DC conversion unit in parallel, a third switch used for connecting the cathodes of the first DC/DC conversion unit and the second DC/DC conversion unit in parallel, and a neutral line switch connected in series between the cathodes of the first DC/DC conversion unit or the anodes of the second DC/DC conversion unit and the neutral line output end; the controller sends first target information to each direct current power supply module when the required voltage of the load is larger than a first set value and the energy storage device is in a discharging state, and also sends second target information to each direct current power supply module when the required current of the load is larger than a second set value and the energy storage device is in a discharging state; the controller sends third target information to each direct current power supply module when the required voltage of the load is larger than a first set value and the converter device has a neutral line; the direct current power supply module is suitable for controlling the first switch to be closed after receiving first target information so as to enable the first DC/DC conversion unit and the second DC/DC conversion unit to be connected in series, and controlling the second switch to be closed after receiving second target information so as to enable the first DC/DC conversion unit and the second DC/DC conversion unit to be connected in parallel; the direct current power supply module is suitable for controlling the first switch to be closed after receiving the third target information so as to enable the first DC/DC conversion unit and the second DC/DC conversion unit to be connected in series and enable the neutral line switch to be closed.

As can be seen from the above description of the present utility model and the specific embodiments thereof, compared with the prior art, the technical solution of the present utility model and the related embodiments thereof have the following beneficial effects due to the following technical means:

In the first technical scheme and related embodiments, the energy storage device and the current transformer are placed in the same cabinet body, the direct current power supply module of the energy storage device is in hot plug with the first connecting piece, the current transformer module of the current transformer is in hot plug with the second connecting piece, each first connecting piece is electrically connected with the second connecting end of the first connecting device, each second connecting piece is electrically connected with the first connecting end of the first connecting device, and therefore parallel connection of each direct current power supply module and parallel connection of each current transformer module are achieved, and the energy storage device and the current transformer are electrically connected, and after current is converged, current and voltage are more balanced;

The first connecting device is arranged in the second accommodating area, the second accommodating area is adjacent to the first accommodating area for accommodating the current transformer device and the third accommodating area for accommodating the energy storage device, the wiring distance between the first connecting device and the first connecting piece is short, and the wiring distance between the first connecting device and the second connecting piece is short; when wiring, the first connecting device can be placed in the second accommodating area, each first connecting piece of the second connecting device is fixed, each second connecting piece is fixed, the third connecting end of each first connecting piece is connected with the second connecting end in parallel, the fourth connecting end of each second connecting piece is connected with the first connecting end in parallel, the direct current power supply module is arranged in the mounting channel and is in hot plug with the first connecting piece, the current transformation module is arranged in the accommodating channel and is in hot plug with the second connecting piece, the direct current power supply module and the current transformation module are convenient to install, wiring is convenient and regular. In addition, the converter device and the energy storage device can be used as an integral power supply cabinet to supply power to the load, so that the use experience of a user is improved.

In the second technical solution and related embodiments, the connection distance between the current transforming device and the signal line of the energy storage device is short and the connection is convenient.

In the third technical solution and related embodiments, since the first connector and the second connector have the same structure, the dc power supply module may be attached to the mounting channel and spliced with the first connector, or may be attached to the receiving channel and spliced with the second connector; similarly, the current transformation module can be connected with the second connecting piece in an inserting way, and can also be connected with the first connecting piece in an inserting way, and at the moment, only the first connecting piece connected with the current transformation module in an inserting way is correspondingly adjusted and connected with the first connecting end in parallel, and the second connecting piece connected with the direct current power supply module in an inserting way is connected with the second connecting end in parallel. The positions of the electric connection end of the direct current power supply module and the battery end of the current transformation module are the same; the arrangement makes the installation of the current transformation module and the direct current power supply module more flexible, thereby being convenient for adjusting the quantity of the current transformation module and the direct current power supply module according to the needs of users.

In the fourth technical solution and related embodiments, the dc power supply module may be attached to the mounting channel or the receiving channel, and when attached to the receiving channel, only the second connecting piece on the mounting piece needs to be replaced by the first connecting piece, so that the dc power supply module may be accommodated in the receiving channel and spliced with the first connecting piece; likewise, the current transformation module can be attached to the accommodating channel or the mounting channel, and only the first connecting piece on the mounting piece is required to be replaced by the second connecting piece when being attached to the mounting channel; the first connecting pieces are still connected in parallel with the second connecting ends, the second connecting pieces are still connected in parallel with the first connecting ends, and the positions of the electric connecting ends of the direct current power supply module and the battery ends of the current transformation module are the same; because the mounting is suitable for timesharing and first connecting piece and second connecting piece joint, the change of first connecting piece and second connecting piece is all comparatively convenient. The arrangement makes the installation of the current transformation module and the direct current power supply module more flexible, thereby being convenient for adjusting the quantity of the current transformation module and the direct current power supply module according to the needs of users.

In a fifth technical solution and related embodiments, each of the accommodating channels is provided with a first connecting piece and a second connecting piece in a width and arrangement manner along a direction of the accommodating channels, and each of the mounting channels is provided with a first connecting piece and a second connecting piece in a width and arrangement manner along a direction of the accommodating channels, so that the dc power supply module can be attached to the mounting channels for plugging with the corresponding first connecting piece, or attached to the accommodating channels for plugging with the corresponding first connecting piece; likewise, the current transformation module can be connected with the accommodating channel in an inserting way and the corresponding second connecting piece, and can also be connected with the mounting channel in an inserting way and the corresponding second connecting piece; the first connecting pieces are still connected with the second connecting ends in parallel, the second connecting pieces are still connected with the first connecting ends in parallel, and the positions of the electric connecting ends of the direct current power supply module and the battery ends of the current transformation module are different. The arrangement makes the installation of the current transformation module and the direct current power supply module more flexible, thereby being convenient for adjusting the quantity of the current transformation module and the direct current power supply module according to the needs of users.

In a sixth technical solution and related embodiments, the first plugging portion and the third plugging portion of the plugging element form a first connector, and the second plugging portion and the third plugging portion of the plugging element form a second connector, so each accommodating channel is correspondingly provided with the first connector and the second connector, each mounting channel is correspondingly provided with the first connector and the second connector, and the dc power supply module can be attached to the mounting channel for plugging with the corresponding first connector or the accommodating channel for plugging with the corresponding first connector; likewise, the current transformation module can be connected with the accommodating channel in an inserting way and the corresponding second connecting piece, and can also be connected with the mounting channel in an inserting way and the corresponding second connecting piece; the first connecting pieces are still connected with the second connecting ends in parallel, the second connecting pieces are still connected with the first connecting ends in parallel, and the positions of the electric connecting ends of the direct current power supply module and the battery ends of the current transformation module are only partially the same. The arrangement makes the installation of the current transformation module and the direct current power supply module more flexible, thereby being convenient for adjusting the quantity of the current transformation module and the direct current power supply module according to the needs of users. The first connecting piece and the second connecting piece share a third plug-in connection part, so that cost is saved.

In the seventh technical scheme and related embodiments, the first accommodating area, the second accommodating area and the third accommodating area are sequentially arranged along the vertical direction, so that the wiring operation is further facilitated, and compared with other arrangement modes, the occupied area is smaller; each installation channel is distributed along the first direction to form at least two installation groups, and the third connecting ends of the corresponding first connecting pieces of each installation group are connected with the corresponding second sub-connecting ends in a tandem mode, so that wiring operation is facilitated.

In the eighth technical solution and related embodiments, the controller distributes the working targets of each current transformation module and the working targets of each direct current power supply module according to the power requirement of the load, so as to facilitate unified scheduling and control, and monitor the operation of each current transformation module and each direct current power supply module.

In the ninth technical solution and related embodiments, as well known to those skilled in the art, when the first DC/DC conversion unit and the second DC/DC conversion unit are connected in series, the DC power supply module may output a large voltage, and when the first DC/DC conversion unit and the second DC/DC conversion unit are connected in parallel, the DC power supply module may output a large current, so when the converter device needs a large voltage, the controller may control the first DC/DC conversion unit and the second DC/DC conversion unit to be connected in series, and when the converter device needs a large current, the controller may control the first DC/DC conversion unit and the second DC/DC conversion unit to be connected in parallel, thereby ensuring that the operation of the energy storage device is synchronous with the operation requirement of the converter device, and ensuring the power supply stability.

In a tenth technical solution and related embodiments, the dc power supply module is provided with a neutral line output end, and a series-parallel switching module is provided, where the series-parallel switching module includes a first switch, a second switch, a third switch, and a neutral line switch, and the controller can adjust the series-parallel switching module according to an operation requirement and a model of the current transformer, so that the energy storage device can be matched with the current transformer with a neutral line and the current transformer without a neutral line.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cabinet according to a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of a power supply cabinet according to a first embodiment of the utility model;

Fig. 3 is a schematic diagram of a dc power supply module and a serial-parallel module according to a first embodiment of the present utility model;

fig. 4 is a schematic diagram of a dc power module according to a first embodiment of the utility model;

FIG. 5 is a rear view of a cabinet, a first coupling device and a second coupling device according to a first embodiment of the utility model;

FIG. 6 is an enlarged schematic view of portion A of FIG. 5;

FIG. 7 is an enlarged schematic view of portion B of FIG. 5;

FIG. 8 is a side view of a cabinet, a first coupling device, and a second coupling device according to a first embodiment of the utility model;

Fig. 9 is a schematic diagram two of a dc power supply module and a serial-parallel module in the first embodiment of the utility model;

FIG. 10 is a schematic view of a cabinet according to a second embodiment of the utility model;

FIG. 11 is a schematic view of a mounting member and a first connector according to a second embodiment of the present utility model;

FIG. 12 is a schematic view of a first connector, a second connector and a receiving channel according to a third embodiment of the present utility model;

fig. 13 is a schematic view of a plug connector according to a fourth embodiment of the present utility model.

The main reference numerals illustrate:

A cabinet 10; a first accommodation area 11; a receiving passage 111; a second accommodation region 12; a third accommodation area 13; a mounting channel 131; a deflector 20; a current transformation module 20A; a battery terminal 21; a dc bus 22; a voltage converter 23; a first signal connection 24; a voltage-current collector 25; an AC/DC converter 26; a DC/AC converter 27; an energy storage device 30; a DC power supply module 40; an energy storage unit 41; a first DC/DC conversion unit 421; a first DC/DC converter 4211; a second DC/DC conversion unit 422; a second DC/DC converter 4221; a case 43; an electrical connection 44; positive electrode output 441; a negative output 442; a midline output 443; a second signal connection 45; a series-parallel switching module 50; a first switch S1; a second switch S2; a third switch S3; a neutral line switch S0; first connecting means 60; a first connection end 61; a second connection end 62; a positive electrode busbar 63; a negative electrode busbar 64; a midline busbar 65; positive electrode output terminal 661; a negative output terminal 662; a neutral output terminal 663; a first signal transfer end 67; a second signal transfer end 68; a second connection means 70; a first connection member 71; a third connection terminal 711; a third signal connection 712; a second connector 72; a fourth connection 721; a fourth signal connection 722; a mounting member 73; a plug 74; a first plug-in portion 741; a second plug portion 742; a third mating portion 743; and a controller 80.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is to be understood that the described embodiments are preferred embodiments of the utility model and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without creative efforts, are within the protection scope of the present utility model.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the utility model.

In the claims, specification and drawings of the present utility model, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present utility model, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Example 1

Referring to fig. 1-9, fig. 1-9 illustrate a power cabinet comprising a cabinet body 10, a variable current device 20, an energy storage device 30, a controller 80, a first connection device 60, and a second connection device 70.

Referring to fig. 1, a cabinet body 10 is provided with a first accommodating area 11, a second accommodating area 12 and a third accommodating area 13, the second accommodating area 12 is adjacent to the first accommodating area 11 and the third accommodating area 13, the first accommodating area 11 is provided with at least one accommodating channel 111, the third accommodating area 13 is provided with a plurality of mounting channels 131, in this embodiment, the first accommodating area 11, the second accommodating area 12 and the third accommodating area 13 are sequentially arranged along a vertical direction, the first accommodating area 11 is positioned at the top, ten accommodating channels 111 are formed in the first accommodating area, ten accommodating channels 111 are arranged along a first horizontal direction to form two columns, each column comprises five accommodating channels 111 along the vertical direction, and each accommodating channel 111 extends along a second horizontal direction perpendicular to the first direction; each of the mounting channels 131 is arranged in a first horizontal direction to form at least two mounting groups, each of the mounting groups including a plurality of mounting channels 131 arranged in a vertical direction, each of the mounting channels 131 extending in a second direction. In fig. 1, the first direction is the left-right direction, the second direction is the front-back direction, and the number of the mounting groups is two. In this embodiment, the accommodating passage 111 and the mounting passage 131 are identical in size. The receiving channel 111 is sized to fit the deflector 20 and the mounting channel 131 is sized to fit the energy storage device 30, and in other embodiments, the two channels may be the same or different.

The current transformation device 20 comprises current transformation modules 20A, the number of which is equal to that of the accommodating channels 111, wherein each current transformation module 20A is accommodated in each accommodating channel 111 in a one-to-one correspondence manner, referring to fig. 2, each current transformation module 20A comprises a battery end 21, a direct current bus 22, a voltage converter 23, a first signal connection end 24 and a voltage and current collector 25, wherein the voltage converter 23 is a bidirectional DC/DC converter, and two sides of the voltage converter are respectively connected with the direct current bus 22 and the battery end 21 and are used for realizing voltage conversion between the two; in practical applications, the converter device 20 further includes an AC/DC converter 26 and a DC/AC converter 27; the DC sides of the AC/DC converter 26 and the DC/AC converter 27 are connected with the DC bus 22, the AC side of the AC/DC converter 26 is connected with an AC power supply, and the AC side of the DC/AC converter 27 outputs AC power; the high-voltage side of the voltage converter 23 is connected to the dc bus 22, and the low-voltage side thereof is connected to the battery terminal 21. The voltage and current collector 25 may collect the voltage of the dc bus 22 and the voltage and current of the ac side. In this embodiment, the first signal connection 24 may transmit information of the voltage converter 23, the AC/DC converter 26, the DC/AC converter 27 and the voltage and current collector 25.

The energy storage device 30 is accommodated in the third accommodating area 13 of the cabinet body 10, the energy storage device 30 includes DC power supply modules 40 equal to the number of the installation channels 131, each DC power supply module 40 is accommodated in each installation channel 131 in a one-to-one correspondence manner, referring to fig. 3, each DC power supply module 40 includes an energy storage unit 41, a first DC/DC conversion unit 421 and a second DC/DC conversion unit 422, the energy storage unit 41 is a battery pack in this embodiment, low voltage sides of the first DC/DC conversion unit 421 and the second DC/DC conversion unit 422 are both connected with the energy storage unit 41, and the high voltage sides are both provided with an anode and a cathode.

In practical applications, referring to fig. 2 and 4, the DC power supply module 40 further includes a box 43 and a serial-parallel switching module 50, each DC power supply module 40 is provided with an electrical connection end 44 and a second signal connection end 45, the energy storage unit 41, the first DC/DC conversion unit 421, the second DC/DC conversion unit 422 and the serial-parallel switching module 50 are all accommodated in the box 43, referring to fig. 3-4, and the electrical connection end 44 and the second signal connection end 45 are all terminal assemblies embedded on the wall of the box 43; the electrical connection 44 includes a positive output 441, a negative output 442, and a neutral output 443; referring to fig. 2, the high voltage sides of the first and second DC/DC converting units 421 and 422 are connected to the electrical connection terminal 44 through the series-parallel switching module 50. The serial-parallel switching module 50 is connected to the second signal connection terminal 45.

Referring to fig. 3, the positive electrode output terminal 441 is connected to the positive electrode of the first DC/DC conversion unit 421, and the negative electrode output terminal 442 is connected to the negative electrode of the second DC/DC conversion unit 422; the serial-parallel switching module 50 includes a first switch S1 for connecting the first DC/DC conversion unit 421 and the second DC/DC conversion unit 422 in series, a second switch S2 for connecting the anodes of the first DC/DC conversion unit 421 and the second DC/DC conversion unit 422 in parallel, a third switch S3 for connecting the cathodes of the first DC/DC conversion unit 421 and the second DC/DC conversion unit 422 in parallel, and a neutral line switch S0 connected in series between the cathodes of the first DC/DC conversion unit 421 or the anodes of the second DC/DC conversion unit 422 and the neutral line output 443.

The dc power modules 40 of each installation group may form a dc power cluster, and each dc power cluster may be controlled by a cluster-level control unit.

Referring to fig. 2, 5 and 8, the first connection device 60 is disposed in the second accommodating area 12 and is used for implementing the parallel connection of the dc power supply modules 40, the parallel connection of the current converting modules 20A and the connection of the energy storage device 30 and the current converting device 20, specifically, the first connection device 60 is provided with a first connection end 61 and a second connection end 62, and the second connection end 62 is electrically connected with the first connection end 61. The second connection terminals 62 include second sub-connection terminals equal in number to the mounting groups, that is, two second sub-connection terminals, and each of the second sub-connection terminals is disposed along the first direction and electrically connected to the first connection terminal 61. The first connecting device 60 is further provided with a first signal transfer end 67 and a second signal transfer end 68 connected with the first signal transfer end 67; each third signal connection 712 communicates with the first signal transfer terminal 67; each fourth signal connection 722 communicates with the second signal transfer terminal 68.

In particular, the first connection device 60 may include two bus modules, two open and signal transfer members, the first connection end 61 is formed at the open output end, the second sub-connection end is formed on each bus module, the output end of the bus module is electrically connected with the open input end, the bus module may include a positive bus 63, a negative bus 64, and a neutral bus 65, and the first signal transfer end 67 and the second signal transfer end 68 are formed on the signal transfer members. This part belongs to the prior art, and this embodiment will not be described in detail.

Referring to fig. 5 to 7, the second connection device 70 includes the first connection members 71 equal in number to the dc power supply modules 40, each first connection member 71 is fixed to the rear end of each mounting channel 131 in one-to-one correspondence and each first connection member 71 is provided with a third connection terminal 711 corresponding to the electrical connection terminal 44 and a third signal connection terminal 712 corresponding to the second signal connection terminal 45; the third connection terminal 711 and the third signal connection terminal 712 are adapted to be plugged with the electrical connection terminal 44 and the second signal connection terminal 45 respectively when the corresponding dc power module 40 is in place, and each third connection terminal 711 may be connected to the second connection terminal 62 by a cable; each third signal connection 712 communicates with the second signal transfer terminal 68 via a signal cable; the third connection end 711 of each corresponding first connection member 71 of each mounting group is connected in parallel to the corresponding second sub-connection end. The first connector 71 may employ a hot plug connection terminal in an implementation.

The second connection device 70 further includes second connection members 72 equal to the number of the current converting modules 20A, each second connection member 72 is attached to one end of each receiving channel 111 in a one-to-one correspondence manner, and each second connection member 72 is provided with a fourth connection end 721 corresponding to the battery end 21 and a fourth signal connection end 722 corresponding to the first signal connection end 24, the fourth connection end 721 is adapted to be plugged into the battery end 21 thereof when the corresponding current converting module 20A is in place, and the fourth signal connection end 722 is adapted to be plugged into the first signal connection end 24 when the corresponding current converting module 20A is in place, and each fourth connection end 721 is connected to the first connection end 61 in parallel by a cable. Each fourth signal connection 722 communicates with the first signal transfer terminal 67 through a cable.

The controller 80 is accommodated in the second accommodating area 12 of the cabinet body 10 and is connected to the first signal switching end 67 and the second signal switching end 68 to obtain the power requirement of the load, and receives the operation information of each current converting module 20A and the operation information of each direct current power supply module 40, and distributes the working target of each current converting module 20A and the working target of each direct current power supply module 40 according to the power requirement of the load. Here, the number of the current converting modules 20A and the number of the dc power supplying modules 40 that need to operate are mainly determined according to the load requirement, so that the working standard of the current converting modules 20A corresponds to the switch and the output power thereof, and the working target of the dc power supplying modules 40 corresponds to the switch and the output power thereof.

The controller 80 is adapted to send target information to the DC power supply module 40 to enable the first DC/DC conversion unit 421 and the second DC/DC conversion unit 422 to switch between the series-parallel connection when the energy storage device 30 is in a discharge state and the operation information of the current transformer 20 is changed.

Specifically, the controller 80 sends first target information to each dc power supply module 40 when the required voltage of the load is greater than a first set value and the energy storage device 30 is in a discharge state, and sends second target information to each dc power supply module 40 when the required current of the load is greater than a second set value and the energy storage device 30 is in a discharge state; the controller 80 sends third target information to each dc power module 40 when the required voltage of the load is greater than the first set value and the converter 20 has a neutral line; the direct current power supply module 40 is adapted to control the first switch S1 to be closed to connect the first DC/DC converting unit 421 and the second DC/DC converting unit 422 in series after receiving the first target information, and to control the second switch S2 and the third switch S3 to be closed to connect the first DC/DC converting unit 421 and the second DC/DC converting unit 422 in parallel after receiving the second target information; the DC power supply module 40 is adapted to control the first switch S1 to be closed after receiving the third target information, so that the first DC/DC converting unit 421 and the second DC/DC converting unit 422 are connected in series and the neutral switch S0 is closed.

In practical application, referring to fig. 9, the first DC/DC conversion unit 421 includes N first DC/DC converters 4211, the second DC/DC conversion unit 422 includes M second DC/DC converters 4221, N and M are positive integers, and the input end of each first DC/DC converter 4211 and the input end of each second DC/DC converter 4221 are connected to the energy storage unit 41; the series-parallel switching module 50 includes a fourth switching unit (switch S4 in fig. 8) for implementing the series connection of each first DC/DC converter 4211 and a fifth switching unit (switch S5 in fig. 8) for implementing the parallel connection of each first DC/DC converter 4211 when N is greater than 1, and includes a seventh switching unit (switch S7 in fig. 8) for implementing the series connection of each second DC/DC converter 4221 and an eighth switching unit (switches S8 and S9 in fig. 8) for implementing the parallel connection of each second DC/DC converter 4221 when M is greater than 1. In practical applications, the switching of the series-parallel connection of each first DC/DC converter 4211 and the switching of the series-parallel connection of each second DC/DC converter 4221 are also involved, and therefore, at this time, the series-parallel connection switching of the first DC/DC converter 4211 and the series-parallel connection switching of the second DC/DC converter 4221 are also included in the first target information, the second target information, and the third target information.

The controller 80 thus can control not only the switching of the series-parallel connection of the first DC/DC conversion unit 421 and the second DC/DC conversion unit 422, but also the number of the connected first DC/DC converters 4211 and the number of the connected second DC/DC converters 4221 to adjust the output voltage and the output current of the DC power supply module 40 while ensuring that the output voltages of the first DC/DC conversion unit 421 and the second DC/DC conversion unit 422 are equal.

In this embodiment, the energy storage device 30 and the current transformer 20 are disposed in the same cabinet 10, the direct current power supply module 40 of the energy storage device 30 is hot-plugged with the first connection piece 71, the current transformer module 20A of the current transformer 20 is hot-plugged with the second connection piece 72, each first connection piece 71 is electrically connected with the second connection end 62 of the first connection device 60, each second connection piece 72 is electrically connected with the first connection end 61 of the first connection device 60, so that the parallel connection of the direct current power supply modules 40 and the parallel connection of the current transformer modules 20A are realized, and the electrical connection of the energy storage device 30 and the current transformer 20 is realized, and the current voltage is more balanced after the current is converged;

The first connecting device 60 is disposed in the second accommodating area 12, the second accommodating area 12 is disposed between the first accommodating area 11 accommodating the current transformer 20 and the third accommodating area 13 accommodating the energy storage device 30, the connection distance between the first connecting device 60 and the first connecting piece 71 is short, and the connection distance between the first connecting device 60 and the second connecting piece 72 is short; when in wiring, the first connecting device 60 can be placed in the second accommodating area 12, each first connecting piece 71 of the second connecting device 70 is fixed, each second connecting piece 72 is fixed, then the third connecting end 711 of each first connecting piece 71 is connected with the second connecting end 62 in parallel, the fourth connecting end 721 of each second connecting piece 72 is connected with the first connecting end 61 in parallel, when the direct current power supply module 40 is installed, only the direct current power supply module 40 is required to be inserted into the installation channel 131, and when the direct current power supply module 40 is installed in place, the direct current power supply module 40 can complete electric connection and signal connection with the first connecting piece 71, and the installation of the direct current power supply module 40 is convenient; similarly, when the current transformation module 20A is installed, only the current transformation module 20A is required to be inserted into the accommodating channel 111, and when the current transformation module 20A is installed in place, the current transformation module 20A can be electrically connected with the second connecting piece and connected with signals, so that the current transformation module 20A is convenient to install; the wiring is convenient and regular. Similarly, the controller 80 is disposed in the second accommodating area 12, which shortens the routing distance and facilitates the wiring operation. In addition, the converter device 20 and the energy storage device 30 can be used as a whole power supply cabinet to supply power to the load, so that the use experience of a user is improved.

In this embodiment, the first connection device 60 can also realize the switching of the second signal connection end 45 of each dc power supply module 40, so that the connection is convenient.

In this embodiment, each mounting channel 131 is arranged along the first direction to form two mounting groups, and the third connection end 711 of each first connection member 71 corresponding to each mounting group is connected to the corresponding second sub-connection end; and the wiring operation is convenient.

In this embodiment, the controller 80 distributes the working targets of the current transformation modules 20A and the working targets of the dc power supply modules 40 according to the power requirements of the load, so as to facilitate unified scheduling and control, and monitor the operation of the current transformation modules 20A and the dc power supply modules 40.

In this embodiment, the serial-parallel switching module 50 is disposed in each dc power supply module 40, so that the control is more flexible, and large current or large voltage can be output as required, different requirements of the load are satisfied, and the current transformer 20 with a neutral line and the current transformer 20 without a neutral line can be matched, so that the current transformer 20 can be replaced as required.

Example two

Embodiment two is substantially the same as embodiment one except

First, referring to fig. 10, in the present embodiment, the first accommodating area 11 and the third accommodating area 13 are adjacently disposed along the vertical direction, the second accommodating area 12 is located behind the first accommodating area 11 and the third accommodating area 13 (in this case, fig. 10 is a left view of the cabinet), or the second accommodating area 12 is located on the left side or right side of the first accommodating area 11 and the third accommodating area 13 (in this case, fig. 10 is a front view of the cabinet).

In the present embodiment, the first connection member 71 and the second connection member 72 have the same structure, the mounting channel 131 is further adapted to accommodate the current transformation module 20A, and the first connection member 71 is further adapted to be plugged with the corresponding current transformation module 20A when the current transformation module is mounted in place in the mounting channel 131 and correspondingly adjusted to be connected in parallel with the first connection end 61; the receiving channel 111 is further adapted to mount a dc power module 40, and the second connector 72 is further adapted to plug into and correspondingly align with the second connector 62 when the corresponding dc power module 40 is mounted in place within the receiving channel 111.

The dc power supply module 40 may be attached to the mounting channel 131 and plugged with the first connector 71, or may be attached to the receiving channel 111 and plugged with the second connector 72; similarly, the current transforming module 20A may be attached to the accommodating channel 111 and the second connecting piece 72, or may be attached to the mounting channel 131 and the first connecting piece 71, and at this time, only the first connecting piece 71 that is attached to the current transforming module 20A needs to be correspondingly adjusted and connected to the first connecting end 61, and the second connecting piece 72 that is attached to the dc power supply module 40 is connected to the second connecting end 62. Wherein, the positions of the electric connection end 44 of the direct current power supply module 40 and the battery end 21 of the current transformation module 20A are the same; by the arrangement, the installation of the current transformation module 20A and the direct current power supply module 40 is more flexible, so that the number of the current transformation module 20A and the direct current power supply module 40 can be conveniently adjusted according to the needs of users.

Example III

Embodiment III is substantially the same as embodiment I except

Referring to fig. 11, the rear side of the mounting passage 131 and the rear side of the receiving passage 111 are provided with the mounting member 73; the mounting channel 131 is further adapted to receive the deflector module 20A; the accommodating channel 111 is also suitable for mounting the direct current power supply module 40; the mounting member 73 is adapted to be in time-sharing clamping connection with the first connecting member 71 and the second connecting member 72, so that the current converting module 20A is received in the mounting channel 131 and is plugged with the second connecting member 72 clamped in the mounting member 73 when mounted in place, and the dc power supply module 40 is received in the receiving channel 111 and is plugged with the first connecting member 71 clamped in the mounting member 73 when mounted in place.

In this embodiment, the mounting member 73 is suitable for being elastically clamped with the first connecting member 71 and the second connecting member 72 in a time-sharing manner, the mounting member 73 is provided with a clamping groove, the first connecting member 71 and the second connecting member 72 are provided with elastic clamping claws, and the first connecting member 71 and the second connecting member 72 are embedded in the mounting member 73 in a time-sharing manner and are elastically clamped with the mounting member 73 when being mounted in place.

The dc power supply module 40 can be attached to the mounting channel 131 or the accommodating channel 111, and when attached to the accommodating channel 111, only the second connecting piece 72 on the mounting piece 73 needs to be replaced by the first connecting piece 71, so that the dc power supply module 40 can be accommodated in the accommodating channel 111 and spliced with the first connecting piece 71; similarly, the current transforming module 20A may be attached to the accommodating channel 111 or the mounting channel 131, and only the first connection member 71 on the mounting member 73 needs to be replaced by the second connection member 72 when attached to the mounting channel 131; wherein, each first connecting piece 71 is still connected to the second connecting end 62 in parallel, each second connecting piece 72 is still connected to the first connecting end 61 in parallel, and the positions of the electric connecting end 44 of the dc power supply module 40 and the battery end 21 of the current converting module are the same; since the mounting member 73 is adapted to be engaged with the first and second connecting members 71 and 72 in a time-sharing manner, the first and second connecting members 71 and 72 are easily replaced. By the arrangement, the installation of the current transformation module 20A and the direct current power supply module 40 is more flexible, so that the number of the current transformation module 20A and the direct current power supply module 40 can be conveniently adjusted according to the needs of users.

Example IV

Example IV is substantially the same as example I except

Referring to fig. 12, the mounting channel 131 is further adapted to receive the deflector module 20A; the accommodating channel 111 is also suitable for mounting the direct current power supply module 40; each first connecting piece 71 is also correspondingly attached to one end of each accommodating channel 111 and is parallel to each second connecting piece 72 along the width direction of the accommodating channel 111, and is suitable for being inserted into the corresponding direct current power supply module 40 when the corresponding direct current power supply module 40 is accommodated in the accommodating channel 111 and is in place; the second connectors 72 are further attached to one end of each mounting channel 131 in a one-to-one correspondence manner and are arranged side by side with each first connector 71 along the width direction of the mounting channel 131, and are adapted to be plugged with the corresponding current converting module 20A when the current converting module is accommodated in the mounting channel 131 and mounted in place.

Each of the receiving channels 111 is provided with a first connecting piece 71 and a second connecting piece 72 in a parallel arrangement along the width direction, and each of the mounting channels 131 is provided with a first connecting piece 71 and a second connecting piece 72 in a parallel arrangement along the width direction, so that the direct current power supply module 40 can be connected with the mounting channel 131 in an inserting manner with the corresponding first connecting piece 71 or can be connected with the receiving channel 111 in an inserting manner with the corresponding first connecting piece 71; likewise, the current transformation module 20A may be attached to the accommodating channel 111 and plugged with the corresponding second connecting piece 72, or may be attached to the mounting channel 131 and plugged with the corresponding second connecting piece 72; the first connection members 71 are still connected to the second connection terminals 62, the second connection members 72 are still connected to the first connection terminals 61, and the positions of the electric connection terminals 44 of the dc power supply module 40 and the battery terminals 21 of the current converting module 20A are different. By the arrangement, the installation of the current transformation module 20A and the direct current power supply module 40 is more flexible, so that the number of the current transformation module 20A and the direct current power supply module 40 can be conveniently adjusted according to the needs of users.

Example five

Example five is substantially the same as example one except that

Referring to fig. 13, the second connection device 70 includes a plurality of connectors 74, each connector 74 is disposed at one end of each mounting channel 131 and each receiving channel 111, the connectors 74 are provided with a first connector 741, a second connector 742 and a third connector 743, the first connector 741 and the third connector 743 form a first connection 71, and the second connector 742 and the third connector 743 form a second connection 72.

In practical application, the third plugging portion 743 is an electrical connection terminal of the first connector 71 and the second connector 72, the first plugging portion 741 is a communication terminal of the first connector 71, and the second plugging portion 742 is a communication terminal of the second connector 72.

In this embodiment, the first plug portion 741 and the third plug portion 743 of the plug 74 form the first connection member 71, and the second plug portion 742 and the third plug portion 743 of the plug 74 form the second connection member 72, so each accommodating channel 111 is correspondingly provided with the first connection member 71 and the second connection member 72, each mounting channel 131 is correspondingly provided with the first connection member 71 and the second connection member 72, and the dc power supply module 40 may be attached to the mounting channel 131 and plugged with the corresponding first connection member 71, or attached to the accommodating channel 111 and plugged with the corresponding first connection member 71; likewise, the current transformation module 20A may be attached to the accommodating channel 111 and plugged with the corresponding second connecting piece 72, or may be attached to the mounting channel 131 and plugged with the corresponding second connecting piece 72; wherein, each first connection piece 71 is still connected to the second connection terminal 62 in parallel, each second connection piece 72 is still connected to the first connection terminal 61 in parallel, and the positions of the electric connection terminal 44 of the dc power supply module 40 and the battery terminal 21 of the current converting module are only partially the same. By the arrangement, the installation of the current transformation module 20A and the direct current power supply module 40 is more flexible, so that the number of the current transformation module 20A and the direct current power supply module 40 can be conveniently adjusted according to the needs of users. Wherein, the first connecting piece 71 and the second connecting piece 72 share a third plugging part 743, thereby saving the cost.

The foregoing description of the embodiments and description is presented to illustrate the scope of the utility model, but is not to be construed as limiting the scope of the utility model. Modifications, equivalents, and other improvements to the embodiments of the utility model or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the utility model or the teachings of the embodiments, are intended to be included within the scope of the utility model, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.

Claims (10)

1. A power supply cabinet is characterized by comprising

The cabinet body (10) is provided with a first accommodating area (11), a second accommodating area (12) and a third accommodating area (13), the second accommodating area (12) is adjacent to the first accommodating area (11) and the third accommodating area (13), the first accommodating area (11) is provided with at least one accommodating channel (111), and the third accommodating area (13) is provided with a plurality of mounting channels (131);

The current transformation device (20) comprises current transformation modules (20A) with the same number as the containing channels (111), the current transformation modules (20A) are contained in the containing channels (111) in a one-to-one correspondence manner, and each current transformation module (20A) is provided with a battery end (21);

the energy storage device (30) comprises direct current power supply modules (40) with the same number as the mounting channels (131), the direct current power supply modules (40) are correspondingly accommodated in the mounting channels (131) one by one, and each direct current power supply module (40) is provided with an electric connection end (44);

A first connection device (60) which is arranged in the second accommodation area (12) and is provided with a first connection end (61) and a second connection end which are electrically connected with each other

A second connection end (62); and

The second connecting device (70) comprises first connecting pieces (71) with the same number as the direct current power supply modules (40) and second connecting pieces (72) with the same number as the current transformation modules (20A), the first connecting pieces (71) are correspondingly connected to one end of each mounting channel (131) one by one, and each first connecting piece (71) is provided with a third connecting end (711) corresponding to the electric connecting end (44); the third connecting ends (711) are suitable for being spliced with the electric connecting ends (44) of the corresponding direct current power supply modules (40) when the corresponding direct current power supply modules are installed in place, and each third connecting end (711) is connected with the second connecting end (62) in parallel; the second connecting pieces (72) are correspondingly arranged at one end of each accommodating channel (111), each second connecting piece (72) is provided with a fourth connecting end (721) corresponding to the battery end (21), the fourth connecting ends (721) are suitable for being spliced with the battery ends (21) of the corresponding current conversion modules (20A) when the corresponding current conversion modules are arranged in place, and the fourth connecting ends (721) are connected with the first connecting ends (61) in parallel.

2. A power supply cabinet according to claim 1, characterized in that the current transformation module (20A) is further provided with a first signal connection (24); the direct current power supply module (40) is provided with a second signal connection end (45);

Each first connecting piece (71) is provided with a third signal connecting end (712) corresponding to the second signal connecting end (45), and the third signal connecting ends (712) are suitable for being spliced with the second signal connecting ends (45) when the corresponding direct current power supply module (40) is installed in place;

Each second connecting piece (72) is provided with a fourth signal connecting end (722) corresponding to the first signal connecting end (24), and the fourth signal connecting ends (722) are suitable for being spliced with the first signal connecting ends (24) when the corresponding current conversion modules (20A) are installed in place;

The first connecting device (60) is also provided with a first signal switching end (67) and a second signal switching end (68) connected with the first signal switching end (67);

Each third signal connection (712) communicates with the second signal transfer (68); each fourth signal connection (722) communicates with the first signal transfer (67).

3. A power cabinet according to claim 1, wherein the first connection member (71) has the same structure as the second connection member (72), the mounting channel (131) is further adapted to accommodate the current transforming module (20A), and the first connection member (71) is further adapted to plug into the corresponding current transforming module (20A) when mounted in place in the mounting channel (131) and correspondingly adapted to be connected in parallel to the first connection end (61); the receiving channel (111) is further adapted for mounting a direct current power supply module (40), and the second connection piece (72) is further adapted for plugging with a corresponding direct current power supply module (40) when mounted in place in the receiving channel (111) and correspondingly adapted to be connected in parallel to the second connection end (62).

4. A power supply cabinet according to claim 1, characterized in that the rear side of the mounting channel (131) and the rear side of the receiving channel (111) are provided with mounting elements (73); the mounting channel (131) is further adapted to mount a deflector module (20A); the accommodating channel (111) is further adapted to accommodate a direct current power supply module (40); the mounting piece (73) is suitable for being clamped with the first connecting piece (71) and the second connecting piece (72) in a time-sharing mode, so that the current transformation module (20A) is contained in the mounting channel (131) and is spliced with the second connecting piece (72) clamped in the mounting piece (73) when being mounted in place, and the direct current power supply module (40) is contained in the containing channel (111) and is spliced with the first connecting piece (71) clamped in the mounting piece (73) when being mounted in place.

5. A power cabinet according to claim 1, wherein said mounting channel (131) is further adapted to house a current transformation module (20A); the accommodation channel (111) is further adapted to mount a direct current power supply module (40); each first connecting piece (71) is also correspondingly connected to one end of each accommodating channel (111) one by one and is parallel to each second connecting piece (72) along the width direction of the accommodating channel (111), and the first connecting piece is suitable for being inserted into the corresponding direct current power supply module (40) when the corresponding direct current power supply module is accommodated in the accommodating channel (111) and is installed in place; the second connecting pieces (72) are also correspondingly arranged at one end of each mounting channel (131) and are arranged side by side with the first connecting pieces (71) along the width direction of the mounting channel (131), and the second connecting pieces are suitable for being inserted into the corresponding current transformation modules (20A) when the corresponding current transformation modules are accommodated in the mounting channels (131) and are mounted in place.

6. A power supply cabinet according to claim 1, characterized in that the second connection means (70) comprise a number of plug members (74), each plug member (74) being arranged at one end of each mounting channel (131) and each receiving channel (111), the plug members (74) being provided with a first plug portion (741), a second plug portion (742) and a third plug portion (743), the first plug portion (741) and the third plug portion (743) forming the first connection member (71), the second plug portion (742) and the third plug portion (743) forming the second connection member (72).

7. A power supply cabinet according to claim 1, characterized in that the first (11), second (12) and third (13) receiving areas are arranged in sequence in the vertical direction; each mounting channel (131) is arranged along a horizontal first direction to form at least two mounting groups, each mounting group comprises a plurality of mounting channels (131) arranged along a vertical direction, and each mounting channel (131) extends along a horizontal second direction perpendicular to the first direction; the second connecting ends (62) comprise second sub-connecting ends which are equal to the number of the mounting groups, and each second sub-connecting end is distributed along the first direction and is electrically connected with the first connecting end (61); the third connection ends (711) of the respective first connectors (71) of each mounting group are joined to the respective second sub-connection ends.

8. A power cabinet according to claim 2, further comprising a controller (80) accommodated in the second accommodation area (12); the controller (80) is connected to the first signal switching end (67) and the second signal switching end (68) to obtain the power requirement of the load, and receives the operation information of each current transformation module (20A) and the operation information of each direct current power supply module (40), and distributes the working target of each current transformation module (20A) and the working target of each direct current power supply module (40) according to the power requirement of the load.

9. A power supply cabinet according to claim 8, characterized in that each direct current power supply module (40) comprises an energy storage unit (41), a first DC/DC conversion unit (421) and a second DC/DC conversion unit (422), the low voltage sides of the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) are connected to the energy storage unit (41), and the high voltage sides are provided with an anode and a cathode and are connected to the electrical connection terminal (44);

The controller (80) is adapted to send target information to the direct current power supply module (40) when the energy storage device (30) is in a discharge state and the operation information of the current transformation device (20) is changed, so that the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) are switched in series-parallel.

10. A power supply cabinet according to claim 9, wherein each direct current power supply module (40) further comprises a series-parallel switching module (50), the high voltage side of the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) being connected to the electrical connection terminal (44) by the series-parallel switching module (50), the output voltages of the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) being equal; the serial-parallel switching module (50) is connected with the second signal connecting end (45);

The electrical connection (44) comprises a positive output (441), a negative output (442) and a neutral output (443); the positive electrode output end (441) is connected to the positive electrode of the first DC/DC conversion unit (421), and the negative electrode output end (442) is connected to the negative electrode of the second DC/DC conversion unit (422);

The series-parallel switching module (50) comprises a first switch (S1) for connecting the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) in series, a second switch (S2) for connecting the anodes of the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) in parallel, a third switch (S3) for connecting the cathodes of the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) in parallel, and a neutral line switch (S0) connected in series between the cathodes of the first DC/DC conversion unit (421) or the anodes of the second DC/DC conversion unit (422) and the neutral line output terminal (443); the controller (80) sends first target information to each direct current power supply module (40) when the required voltage of the load is greater than a first set value and the energy storage device (30) is in a discharging state, and also sends second target information to each direct current power supply module (40) when the required current of the load is greater than a second set value and the energy storage device (30) is in a discharging state; the controller (80) sends third target information to each direct current power supply module (40) when the required voltage of the load is larger than a first set value and the converter device (20) has a neutral line;

The direct current power supply module (40) is suitable for controlling the first switch (S1) to be closed after receiving first target information so as to enable the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) to be connected in series, controlling the second switch (S2) and the third switch (S3) to be closed after receiving second target information so as to enable the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) to be connected in parallel, and controlling the first switch (S1) to be closed after receiving third target information so as to enable the first DC/DC conversion unit (421) and the second DC/DC conversion unit (422) to be connected in series and enabling the neutral line switch (S0) to be closed.