CN119893940A

CN119893940A - Conflux cabinet and energy storage system

Info

Publication number: CN119893940A
Application number: CN202411994414.0A
Authority: CN
Inventors: 黄国芸; 吴海山; 袁勇; 李文
Original assignee: Shenzhen Ruidian Green Energy Technology Co ltd
Current assignee: Shenzhen Ruidian Green Energy Technology Co ltd
Priority date: 2024-12-30
Filing date: 2024-12-30
Publication date: 2025-04-25

Abstract

The embodiment of the application provides a bus cabinet and an energy storage system, wherein the bus cabinet comprises a bus cabinet body, the bus cabinet body comprises a plurality of heating units, the heating units comprise at least one heating element, the plurality of heating units are sequentially arranged in a heat dissipation channel of the bus cabinet body according to the sequence of the heat generated in unit time, and the heat conduction direction of the plurality of heating units is consistent with the movement direction of a refrigerant in the heat dissipation channel. According to the embodiment of the application, the components of the bus cabinet are regulated according to the heat generated in unit time, so that the heat conduction sequence and the heat radiation direction are unified, the overall heat radiation performance of the bus cabinet is improved, and further, the heat radiation is enhanced by adopting a plurality of doors, and the limitation of the layout of an energy storage system is avoided.

Description

Conflux cabinet and energy storage system

Technical Field

The application belongs to the technical field of heat dissipation of energy storage systems, and particularly relates to a bus cabinet and an energy storage system.

Background

In the related art, an energy storage system comprises an energy storage cabinet and a converging cabinet, and one converging cabinet is matched with a plurality of energy storage cabinets in the energy storage system for use, so that the rationality and the overall coordination of the arrangement of the converging cabinets and the energy storage cabinets are needed to be considered.

The convergence cabinet mainly integrates an energy management system (ENERGY MANAGEMENT SYSTEM, EMS) display screen, a Battery management system (Battery MANAGEMENT SYSTEM, BMS), a power distribution control unit, a Battery pack convergence, an internal control unit and a wind heat dissipation unit.

For the relatively poor problem of heat dispersion, four sides of conflux cabinet have all set up the cabinet door and are used for the heat dissipation for when energy storage system overall arrangement, the direction of opening of four cabinet doors of conflux cabinet need be considered in the arrangement of conflux cabinet and energy storage cabinet like this, and this leads to conflux cabinet to have produced certain limitation to whole energy storage system's overall arrangement.

Disclosure of Invention

The embodiment of the application aims to provide a bus cabinet and an energy storage system, which are used for solving or improving the technical problem that the layout of the energy storage system is limited due to poor heat dissipation performance of the bus cabinet in the related technology to a certain extent.

In order to achieve the above object, in a first aspect, an embodiment of the present application provides a convergence cabinet, including a convergence cabinet body, where the convergence cabinet body includes a plurality of heating units, the heating units include at least one heating element, the plurality of heating units are sequentially arranged in a heat dissipation channel of the convergence cabinet body according to a magnitude order of heat generated in a unit time, and a heat conduction direction of the plurality of heating units is consistent with a movement direction of a refrigerant in the heat dissipation channel.

According to the technical scheme, the heating elements of the bus cabinet are orderly arranged into the heating units, the positions of the heating units are sequentially arranged according to the heat generation amount in unit time, so that the heat conduction direction between the heating units is consistent with the movement direction of the refrigerant in the heat dissipation channel, the heat of the heating units is spontaneously conducted from the high heat area to the low heat area, the heat of the heating units tends to be consistent, the local temperature is prevented from being too high, the movement direction of the refrigerant in the heat dissipation channel is consistent with the heat conduction direction, part of the heat of the high heat area is conducted to the low heat area, and the part of the heat is conducted to the refrigerant, the rapid cooling of the high heat area is facilitated, the overall heat dissipation performance of the bus cabinet is improved, the problem that the heat dissipation is enhanced by arranging a plurality of doors is avoided, and the problem that the layout of an energy storage system is limited due to poor heat dissipation performance of the bus cabinet is solved to a certain extent.

In some implementations of the first aspect, the cabinet of the bus cabinet body includes:

a frame with a first door body on one opening surface, and

The partition board is provided with an inlet for covering an opening surface so that a heat dissipation space is formed between the partition board and the frame, and a heat insulation space is formed between the partition board and the first door body;

The converging cabinet body is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet, the heat dissipation space and the refrigerant outlet are communicated to form a heat dissipation channel.

In the technical scheme, the heat dissipation space, the heat dissipation channel and the heat insulation space are formed in the cabinet body through the partition plate, so that the space utilization rate of the cabinet body is improved, and the heat dissipation channel is convenient for heat dissipation and simultaneously is also convenient for arranging some components with lower heat generation in the heat insulation space.

In some implementations of the first aspect, the frame is further provided with a partition plate, a first space between the partition plate and the partition plate is a heat dissipation space, and the plurality of heat generating units are mounted on one side of the partition plate, which is close to the first space.

According to the technical scheme, the first space is separated from the inner space of the frame through the partition plate, so that the first space is further separated between the partition plate and used for installing the heating unit, the cooling medium inlet, the cooling space and the cooling medium outlet are communicated to form the cooling channel, and therefore targeted heat dissipation of the heating element with larger heating value in unit time is achieved.

In some implementations of the first aspect, opposite sides of the frame are open sides, the first door is provided with a refrigerant inlet and is arranged on one open side of the frame, the cabinet further comprises a second door provided with a refrigerant outlet and is arranged on the other open side of the frame, and a second space is arranged between the partition plate and the second door.

In the scheme, a second space is formed between the partition plate and the second door body, and the second space can be used for installing other elements with lower heating, so that the space in the frame is further reasonably utilized.

In some implementations of the first aspect, the refrigerant inlet and the refrigerant outlet are diagonally opposite, the refrigerant outlet is provided with an air draft device, an inlet is arranged at a position of the partition plate corresponding to the refrigerant inlet, and the partition plate is used for covering one opening surface of the frame so that the refrigerant inlet of the first door body, the inlet of the partition plate, the heat dissipation space and the refrigerant outlet of the second door body are sequentially communicated to form a heat dissipation channel.

According to the technical scheme, the door body is arranged on the two opposite opening surfaces of the cabinet body, the refrigerant inlet and the refrigerant outlet of the door body are arranged in an inclined pair, so that the refrigerant is prevented from directly entering the refrigerant outlet from the refrigerant inlet, the refrigerant can fully absorb heat in the heat dissipation channel and then is discharged, and the air draft device provides power for the movement of the refrigerant in the heat dissipation channel.

In some implementations of the first aspect, the partition plate is made of a heat-insulating material, and/or the frame is a rectangular frame, and/or the frame is integrally formed, and/or hinge parts of the first door body and the second door body are arranged in an inclined pair, and/or one side of the partition plate, which is close to the refrigerant outlet, is connected with the refrigerant outlet through the air deflector.

The technical scheme adopts the heat insulation material to help enhance the heat insulation effect of the heat insulation space, the frame adopts the integrated molding to help improve the protection level of the cabinet body, so that the protection level of an energy storage system adopting the cabinet body is stable, the first door body and the second door body adopt the inclined pair arrangement to facilitate the layout of the energy storage system, the limitation of the door body on the layout of the energy storage system is avoided, and the transversely arranged air guide channel is favorable for guiding the vertically flowing refrigerant to the refrigerant outlet for discharge. Optionally, the refrigerant is air.

In some implementations of the first aspect, an EMS display screen is disposed in the insulating space, and the EMS display screen is disposed on a side of the first door body adjacent to the interior of the cabinet body.

According to the technical scheme, the EMS display screen is arranged in the cabinet body, so that the reduction of service life caused by water seepage, line aging and the like of the cabinet body due to long-term exposure of the EMS display screen outside the cabinet body is avoided, meanwhile, the EMS display screen is arranged on one side of the door body close to the interior of the cabinet body, so that the EMS display screen is convenient to check during debugging or maintenance, and the EMS display screen does not need to be wound outside the door body for checking, and therefore the debugging or maintenance efficiency is improved through the arrangement of the EMS display screen. In addition, locate the EMS display screen in thermal-insulated space, satisfied the thermal-insulated demand of EMS display screen, avoided the influence of high temperature to the EMS display screen to the life of EMS display screen has been prolonged.

In some implementations of the first aspect, the plurality of heat generating units includes:

the first heating unit is arranged in the first partition of the cabinet body;

the second heating unit comprises a first voltage switch component and is arranged in a second partition of the cabinet body;

the heat generated in the unit time of the second heating unit is smaller than that of the first heating unit;

The first heating unit is close to a refrigerant inlet of the heat dissipation channel; the first voltage switch assembly comprises a plurality of first voltage switches and first bus bars, and the plurality of first voltage switches are connected with the power grid side through the first bus bars.

In some implementations of the first aspect, the first voltage switch assembly is a preloaded switch module.

In the technical scheme, the first voltage switch assembly is preassembled into the switch module, so that the assembly process is simpler and more convenient, most components are preassembled in advance, the efficiency of the whole cabinet is higher during assembly, and the assembly efficiency is improved.

In a second aspect, an embodiment of the present application provides an energy storage system, including the aforementioned bus cabinet.

According to the bus cabinet and the energy storage system, the components of the bus cabinet are regulated according to the heat generated in unit time, the heat conduction sequence and the heat radiation direction are unified, the overall heat radiation performance of the bus cabinet is improved, and further the heat radiation is enhanced by adopting the plurality of doors, so that the limitation of the layout of the energy storage system is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a bus bar according to an embodiment of the present application.

Fig. 2 is a schematic view of a section A-A of the bus bar of fig. 1.

Fig. 3 is a schematic view of the overall structure of the view angle of the front door of the bus cabinet in the opened state of the front door and the rear door according to the embodiment of the application.

Fig. 4 is a schematic overall structure diagram of a view angle of a rear door of the bus cabinet in an opened state of the front door and the rear door according to an embodiment of the present application.

Fig. 5 is an exploded view of the convergence cabinet of fig. 3.

Fig. 6 is a schematic structural diagram of an energy storage system according to an embodiment of the application.

Wherein, each reference sign in the figure:

100-bus cabinets, 101-front doors, 102-rear doors, 103-heat insulation space, 104-air inlet shutters, 105-EMS display screens, 106-partition boards, 107-fans, 108-air deflectors, 109-air guide channels, 110-heating units, 111-inlets, 112-power grid cables, 113-air outlet shutters, 114-second air inlet shutters, 115-cabinet bodies, 116-indicator lamps, 117-second high-voltage partitions, 118-4G antennas, 119-low-voltage partitions, 120-first high-voltage partitions, 121-emergency stop buttons, 122-first electric installation plates, 123-control relay sets, 124-second electric installation plates, 125-connection terminal blocks, 126-transparent protection plates, 127-first bus bars, 128-first voltage switch assemblies aa, 129-first voltage switch assemblies bb, 130-second bus bars, 131-metering electric meters, auxiliary electric low-voltage switch sets, 200-first energy storage cabinets, 300-second energy storage cabinets, 1061-panels, 2-low-voltage switch plates, 3-first high-voltage switch plates, 1064-second high-voltage switch plates, 1065-first high-voltage switch plates, 1064-high-voltage switch plates.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application 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 scope of the application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the related art, the energy storage system includes a convergence cabinet and an energy storage cabinet. The convergence cabinet is used as equipment for centralizing and distributing electric energy, is mainly used for current convergence and electric energy distribution, and can be used for converging electric energy of the energy storage battery pack and electric energy of other power supplies and inputting the electric energy into a power grid so as to meet the power contribution of a commercial power grid.

The bus cabinet mainly integrates a display screen of an energy management system (ENERGY MANAGEMENT SYSTEM, EMS), a Battery management system (Battery MANAGEMENT SYSTEM, BMS), a power distribution control unit, a Battery pack bus, an internal control unit, an uninterruptible power supply (Uninterruptible Power Supply, UPS) and a ventilation and heat dissipation unit.

In the related art, the arrangement of all the internal components of the bus cabinet is unreasonable. The high-voltage control switch and the low-voltage control switch are usually integrated and arranged on the whole surface, and due to the limitation of the size of the cabinet body, the positions of part of the control switches are arranged to be higher, so that the manual operability is low, even the operation can be performed by means of a ladder or a pedal, and the heat dissipation of the bus cabinet is mostly realized by adopting a forced air cooling mode, so that the heat dissipation of electric parts in the cabinet is uneven, complete heat dissipation wind guide is not formed, and the heat dissipation effect is poor. In order to facilitate improving the heat dissipation effect, cabinet doors are generally arranged on a plurality of side faces of the cabinet body so as to facilitate heat dissipation, and the protection level of the whole bus cabinet is easy to reduce. However, when the energy storage system is laid out, the bus-bar cabinets are required to be matched with a plurality of energy storage cabinets at the same time, and as a plurality of door bodies are arranged on each side surface of the bus-bar cabinets, the situation that the energy storage cabinets block a certain door body of the bus-bar cabinets often exists, and in addition, the opening directions of the door bodies are different, so that the influence of the opening and closing directions of the cabinet doors on the layout positions of the energy storage cabinets is not considered, and therefore, the layout of the whole energy storage system is limited due to the fact that the door bodies of the bus-bar cabinets are too many in the related art.

The reason why the door body of the bus cabinet is arranged too much and the layout of the energy storage system is limited is that the poor heat dissipation performance of the bus cabinet results in the fact that the layout of the energy storage system is limited to a certain extent, and in order to solve or improve the technical problem that the poor heat dissipation performance of the bus cabinet results in the limitation of the layout of the energy storage system in the related art, referring to fig. 1-5, the embodiment of the application provides a bus cabinet.

In particular, reference is made to fig. 1 and 2. Fig. 1 is a front view of a bus bar according to an embodiment of the present application. Fig. 2 is a schematic view of a section A-A of the bus bar of fig. 1. The bus bar 100 includes a bus bar body having at least one door, not limited herein. Optionally, the bus cabinet body comprises a front door 101, a rear door 102 and a heating unit 110, wherein the heating unit 110 is arranged in the bus cabinet body in layers from bottom to top according to the order of heat dissipation in unit time, namely, the closer to the bottom of the bus cabinet body, the higher the heat dissipation in unit time.

Illustratively, in some embodiments, the plurality of heat generating units 110 includes a high-pressure zone heat generating unit and a low-pressure zone heat generating unit, the heat generating unit of the high-pressure zone generates a greater amount of heat per unit time than the heat generating unit of the low-pressure zone, optionally, the heat generating unit of the high-pressure zone includes a second high-pressure zone 117 heat generating unit and a first high-pressure zone 120 heat generating unit, and it is understood that the heat generating unit of the second high-pressure zone 117 may generate a smaller amount of heat per unit time than the heat generating unit of the first high-pressure zone 120.

Referring to fig. 2, the heat generating unit of the low-voltage partition 119 is disposed above the heat generating unit of the second high-voltage partition 117, and the heat generating unit of the first high-voltage partition 120 is disposed below the heat generating unit of the second high-voltage partition 117, i.e., is disposed at the bottom of the bus cabinet body.

The movement path of the refrigerant is from the refrigerant inlet at the lower part of the front door 101 to the refrigerant outlet at the upper part of the rear door 102, and the movement path of the refrigerant in the converging cabinet body moves from bottom to top, and optionally, the refrigerant is air.

The heat conduction path in the bus cabinet body is that the heat is conducted from the heat generating unit of the second high-voltage partition 117 and the heat generating unit of the first high-voltage partition 120 to the heat generating unit of the low-voltage partition 119, i.e. the heat conduction is conducted from bottom to top.

Therefore, the movement path of the refrigerant in the interior of the converging cabinet body is consistent with the heat conduction path in the interior of the converging cabinet body. The heat of each heating unit is spontaneously conducted from the high-heat area to the low-heat area, so that the heat of each heating unit tends to be consistent, the local temperature is prevented from being too high, in addition, the movement direction of the cooling medium in the heat dissipation channel is consistent with the heat conduction direction, a part of the heat of the high-heat area is conducted to the low-heat area, a part of the heat of the high-heat area is conducted to the cooling medium, the rapid cooling of the high-heat area is facilitated, and the overall heat dissipation performance of the bus cabinet is improved. The technical scheme of the embodiment of the application does not need to enhance heat dissipation by arranging a plurality of door bodies, thereby solving the problem of limited layout of the energy storage system caused by poor heat dissipation performance of the bus cabinet to a certain extent.

In some embodiments, the refrigerant inlet and the refrigerant outlet are arranged in an inclined pair, the refrigerant outlet is provided with an air draft device, an inlet is arranged at a position corresponding to the refrigerant inlet of the partition board, and the partition board is used for covering the frame so that the refrigerant inlet of the first door body, the inlet of the partition board, the interior of the frame and the refrigerant outlet of the second door body are sequentially communicated to form a heat dissipation channel.

Referring to fig. 2 and 3, the front door 101 is provided with a refrigerant inlet, and the rear door 102 is provided with a refrigerant outlet. Optionally, the refrigerant inlet of the front door 101 is provided with an air inlet shutter 104, and the refrigerant enters the bottom of the heating unit 110 in the main body of the collecting cabinet from the air inlet shutter 104. The rear door 102 is provided with a refrigerant outlet provided with an air draft device and an air outlet shutter 113. The suction device may be a fan 107. Optionally, the refrigerant inlet is disposed at the lower portion of the front door 101, and the refrigerant outlet is disposed at the upper portion of the rear door 102. The air flow discharged from the confluence cabinet is hot air flow according to the principle of hot air flow rising, so that the air outlet is arranged at the upper position of the rear door, and the hot air in the cabinet body is discharged more conveniently.

According to the technical scheme, the door body is arranged on the two opposite opening surfaces of the cabinet body, the refrigerant inlet and the refrigerant outlet of the door body are arranged in an inclined pair, so that the refrigerant is prevented from directly entering the refrigerant outlet from the refrigerant inlet, the refrigerant can fully absorb heat in the heat dissipation channel and then is discharged, the air draft device provides power for the movement of the refrigerant in the heat dissipation channel, negative pressure is formed at the refrigerant outlet at the upper part of the rear door, and hot air is discharged conveniently.

In some embodiments, the cabinet body of the confluence cabinet body comprises a frame, a partition plate and a heat dissipation channel, wherein one opening surface of the frame is provided with a first door body, the partition plate is provided with an inlet for covering one opening surface to enable a space between the partition plate and the frame to form a heat dissipation space, the space between the partition plate and the first door body forms a heat insulation space 103, the confluence cabinet body is provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet, the heat dissipation space and the refrigerant outlet are communicated to form the heat dissipation channel.

Referring to fig. 2 and 3, the bus bar body includes a bar body 115, and the bar body 115 includes a frame, alternatively, a rectangular frame, which is not limited herein. The cabinet body further comprises a rear door, wherein the rear door is provided with a refrigerant outlet and is arranged on the other opening surface of the frame, the frame adopts an integrated structure for improving the protection level of the cabinet body, the frame adopts integrated forming to facilitate improving the protection level of the cabinet body, therefore, the energy storage system adopting the cabinet body is beneficial to stabilizing the protection level, and the partition plate can be arranged between the rear door and the frame or between the frame and the front door, and is not limited.

Alternatively, the front of the cabinet 115 is opened and the opening surface is covered by the partition 106, and the front door 101 is installed on the cabinet on the right side of the partition, so that when the front door 101 is closed, the cabinet is divided by the front door 101 and the partition 106 to form a heat dissipation space and a heat insulation space. The cooling medium inlet, the cooling space and the cooling medium outlet are communicated to form a cooling channel, the inlet 111 is arranged at the lower part of the partition plate 106 and is communicated with the air inlet shutter 104, specifically, the position of the inlet 111 corresponds to that of the air inlet shutter, so that cooling medium can enter the cooling channel in the cabinet 115 from the air inlet shutter 104 and the inlet 111 to cool in the shortest path, the heat insulation effect on the heat insulation space is achieved due to the existence of the partition plate, and meanwhile, the cooling medium can enter the heat insulation space, so that the temperature stability in the heat insulation space is ensured. Alternatively, the element to be insulated may be installed in the insulating space, i.e., on the right side of the partition or on the left side of the front door. Such as a display screen or the like.

Optionally, the hinge portions of the first door body and the second door body are arranged in an oblique pair, that is, the opening directions of the first door body and the second door body are located on different sides of the cabinet body. As shown with reference to fig. 3, the opening directions of the front door 101 and the rear door 102 are located at the left and right sides of the frame, respectively. The first door body and the second door body adopt the oblique pair arrangement to facilitate the layout of the energy storage system, so that the limitation of the door body to the layout of the energy storage system is avoided, and the opening layout scheme of various door bodies is provided when the energy storage system is formed by the bus cabinet.

In the technical scheme, the heat dissipation space, the heat dissipation channel and the heat insulation space are formed in the cabinet body through the partition plate, so that the space utilization rate of the cabinet body is improved, and the heat dissipation channel is convenient for heat dissipation and simultaneously is also convenient for arranging some components with lower heat generation in the heat insulation space. Optionally, to enhance the heat insulating effect, the partition is made of a heat insulating material. The heat insulation material is adopted in the technical scheme, so that the heat insulation effect of the heat insulation space is enhanced.

In some embodiments, the frame is further provided with a partition plate, a first space between the partition plate and the partition plate is a heat dissipation space, and the plurality of heat generating units are mounted on one side of the partition plate, which is close to the first space. A second space is arranged between the partition plate and the second door body.

Specifically, referring to fig. 4, the partition plate includes a first electric installation plate 122, a second electric installation plate 124 and a transparent protection plate 126, the first electric installation plate 122, the second electric installation plate 124 and the transparent protection plate 126 are sequentially connected from top to bottom to longitudinally divide a space in the frame into a first space facing the front door and a second space facing the rear door, a heat dissipation channel is formed by the first space and a partition plate, a first space formed by the first space and the partition plate, a refrigerant inlet and a refrigerant outlet, the upper side of the first electric installation plate is connected with the refrigerant outlet through an air deflector 108, and the air deflector guides a refrigerant around the first electric installation plate 122 to the refrigerant outlet for discharging.

The control relay group 123 is installed on the side of the first electric installation plate 122 facing the rear door, the terminal block 125 is installed on the side of the second electric installation plate 124 facing the rear door, the heat generating unit of the second high voltage section 117 and the heat generating unit of the first high voltage section 120 are installed on the side of the transparent protection plate 126 facing the front door, and the heat generating unit of the low voltage section 119 is installed on the side of the second electric installation plate 124 facing the front door.

By adopting the arrangement mode, the scientificity of arrangement of all parts in the bus cabinet is improved, and the space in the bus cabinet is effectively utilized. In addition, the first electric installation plate 122, the second electric installation plate 124 and the transparent protection plate 126 divide the space in the frame into two spaces longitudinally, so that the heat generating units in the independent spaces facing the front door can be cooled by the specific key point of the refrigerant, and the utilization efficiency and the heat dissipation effect of the refrigerant are improved.

In some embodiments, the inlet of the partition, the first space, the transversely arranged air guide channel and the refrigerant outlet of the second door are sequentially communicated to form a heat dissipation channel.

Referring to fig. 2, the refrigerant enters the bottom of the frame from the air inlet louver 104 and the inlet 111 of the partition plate along the horizontal direction, absorbs heat at the bottom of the frame and moves to the top of the frame along the vertical direction, namely, the refrigerant enters the top of the frame through heat conduction from the heat generating units of the second high-pressure partition 117 and the heat generating units of the first high-pressure partition 120 to the heat generating units of the low-pressure partition 119, and the transversely arranged air guide channel 109 guides the refrigerant at the top of the frame to enter the refrigerant outlet for discharging. The air guide channel 109 is arranged transversely, so that the vertically flowing refrigerant is guided to the refrigerant outlet to be discharged. Optionally, the refrigerant is air. Optionally, the air guide channel is made of an air guide plate 108, and the front side and the rear side of the air guide plate are respectively connected with the refrigerant outlet and the top of the frame so as to guide the refrigerant in the frame to the refrigerant outlet for discharging, and optionally, an air outlet shutter 113 is installed at the position opposite to the refrigerant outlet on the outer side of the rear door 102.

In some embodiments, an EMS display screen 105 is disposed in the insulating space, and the display screen is disposed on a side of the first door body adjacent to the interior of the cabinet. Referring to fig. 2, the EMS display screen 105 is located in the insulating space, and the EMS display screen 105 is provided at the left side of the front door 101. Optionally, an indicator light 116 and a scram button 121 are also provided on the front door 101. The rear door 102 is provided with a 4G antenna 118.

In some embodiments, the plurality of heating units comprise a first heating unit arranged in a first partition of the cabinet body, a second heating unit comprising a first voltage switch component arranged in a second partition of the cabinet body, wherein the heat generated in unit time of the second heating unit is smaller than that of the first heating unit, the first heating unit is close to a refrigerant inlet of the heat dissipation channel, the second heating unit is close to a refrigerant outlet of the heat dissipation channel, and the heat conduction directions of the first heating unit and the second heating unit are consistent with the wind direction of the heat dissipation channel.

Alternatively, the first voltage switch assembly includes a first voltage switch assembly aa128 and a first voltage switch assembly bb129, the first voltage switch assembly aa128 includes a plurality of first voltage switches a and a first bus bar 127, the plurality of first voltage switches a are connected to the grid side through the first bus bar 127, the first voltage switch assembly bb129 includes a plurality of first voltage switches b and a second bus bar 130, and the plurality of first voltage switches b are connected to the grid side through the second bus bar 130. Optionally, the first voltage switch b is connected to the grid side via a grid cable 112. Alternatively, the first voltage switch assembly aa128 is disposed at a lower portion of the cabinet, and the second voltage switch assembly b129 is disposed at a middle or upper portion of the cabinet.

In addition, the cables connected with the high-voltage switch assembly are large square number cables, the weight is heavy, the high-voltage switch groups are all arranged at the bottom of the bus cabinet, the routing paths of the high-voltage switch and the low-voltage switch are clear, the layers are clear, and the cost of installation and later maintenance can be saved.

The first heating unit comprises a metering ammeter and an auxiliary electric low-voltage switch group 131, and the metering ammeter and the auxiliary electric low-voltage switch group 131 are installed on one side of the first electric installation plate 122 facing the front door.

In some embodiments, the spacer is provided with a first aperture for fitting over the switch outer side of the first voltage switch assembly and a second aperture for fitting over the switch outer side of the second voltage switch assembly.

Referring to fig. 5, the partition includes a panel 1061, a low-voltage switching orifice 1062, a first high-voltage switching orifice 1063, a second high-voltage switching orifice 1064, and an air intake plate 1065. The panel 1061, the low-voltage switching orifice plate 1062, the first high-voltage switching orifice plate 1063, the second high-voltage switching orifice plate 1064, and the air intake plate 1065 are connected in sequence.

After the refrigerant enters the first space of the partition plate and the partition plate through the refrigerant inlet and the inlet of the air inlet plate, the refrigerant moves to the upper part of the partition plate and is blocked by the panel 1061, and then the refrigerant enters the refrigerant outlet to be discharged through the guide of the air deflector. The panel 1061 of the partition plate has a blocking effect on the refrigerant and a guiding effect of the air deflector, so that an effective convection air guide duct is formed in the confluence cabinet, and therefore, heat dissipation in the cabinet body is uniform, and the service life of electrical elements is longer.

An inlet 111 is provided in the air intake plate 1065, and a second air intake louver 114 is provided in the inlet 111. The low voltage switch orifice plate 1062 is provided with a hole matching the switch of the metering ammeter and the auxiliary low voltage switch group 131, and the first high voltage switch orifice plate 1063 and the second high voltage switch orifice plate 1064 are respectively provided with a hole matching the switch of the first voltage switch assembly aa128 and the switch of the first voltage switch assembly bb129, so that the partition board can be not affected by each switch, and when the partition board is attached to the opening of the frame, the hole of each partition board can be just sleeved on the periphery of each switch.

In some embodiments, the first voltage switch assembly is a preloaded switch module.

The switch module is a preassembled module, and the first voltage switch assembly or other switches and electric elements in the bus cabinet are designed into separate modules, so that the assembly efficiency is improved.

Optionally, the first voltage switch assembly aa128 and the first voltage switch assembly bb129 include three groups of high-voltage switches, the six groups of high-voltage switches are divided into two groups, each group of switches is converged through a large switch, namely, a three-in-one combined mode, an independent switch module is formed by preassembling an independent switch with a busbar, and finally, the independent switch module is packaged into a module to be installed in a busbar cabinet, so that the assembly process is simple, and after most components are preassembled in advance, the whole cabinet assembly efficiency is higher.

The first voltage switch component is preassembled into the switch module, so that the assembly process is simpler and more convenient, most components are preassembled in advance, and the efficiency of the whole cabinet is higher during assembly, thereby improving the assembly efficiency.

In a second aspect, an embodiment of the present application provides an energy storage system including a bus.

Referring to fig. 6, the energy storage system includes a junction box 100, a first energy storage box 200, and a second energy storage box 300, and the first energy storage box 200, the junction box 100, and the second energy storage box 300 are sequentially connected.

Alternatively, the left side of the cabinet frame of the first energy storage cabinet 200, the left and right sides of the frame of the convergence cabinet, and the right side of the cabinet frame of the second energy storage cabinet 300 are integrally formed, and the front and rear sides of the convergence cabinet are opened with front doors and rear faces. In some embodiments, one convergence cabinet of the embodiments of the present application may be used with six energy storage cabinets.

Among the above-mentioned technical scheme, the front and back door maintenance structure that the conflux cabinet adopted, the shrouding of conflux cabinet left and right sides and the cabinet body frame integrated into one piece of energy storage cabinet, when improving the protection level, conflux cabinet left and right sides also can hug closely the energy storage cabinet and arrange side by side, have reduced whole energy storage system's occupation of land space, reduce use cost.

The concept, principle, related technical features and functions of the bus-bar in the energy storage system of the embodiment of the application are similar to those of the foregoing bus-bar, and are not repeated.

Therefore, the layout of the components in the bus cabinet is regular, and the components are respectively arranged according to the heat generation amount in unit time, so that the problems of low operability of the control switch, messy high and low voltage wiring and complex construction process of the energy storage system on site are avoided.

And the heat dissipation structure of the bus cabinet is improved through the heat insulation space, the first space, the second space and the like, the internal space of the bus cabinet is reasonably utilized while targeted heat dissipation is carried out on components with larger heat dissipation, and the problems that the heat dissipation of electric elements and power supply equipment is poor and the service life of the electric elements and the power supply equipment is influenced due to the fact that the flow direction of heat dissipation air in the cabinet is disordered due to the non-directional air guide heat dissipation structure of the related bus cabinet are solved.

In addition, through setting up EMS display screen in the cabinet body, solved EMS display screen and exposed outdoor the leading to the fault rate high and shorten life for a long time, easily be qualified for the next round of competitions infiltration in door plant mounting hole department, debugging efficiency reduction's pain point.

Finally, the frame of the convergence cabinet is integrally formed, and the door bodies are arranged on the front side and the rear side of the frame, so that the limitation of the cabinet door arranged on the plurality of sides of the convergence cabinet on the layout of the energy storage system is avoided.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. A combiner cabinet, characterized in that it comprises a combiner cabinet body;

The combiner cabinet body comprises: a plurality of heating units; the heating unit comprises at least one heating element;

The plurality of heating units are sequentially arranged in the heat dissipation channel of the combiner cabinet body according to the order of the amount of heat generated per unit time; the heat conduction direction of the plurality of heating units is consistent with the movement direction of the refrigerant in the heat dissipation channel.

2. The combiner cabinet according to claim 1, wherein the cabinet body of the combiner cabinet comprises:

A frame, wherein an opening surface of the frame is provided with a first door body; and

The partition is provided with an inlet, and is used to cover the one opening surface so that the space between the partition and the frame forms a heat dissipation space, and the space between the partition and the first door body forms a heat insulation space;

The combiner cabinet body has a refrigerant inlet and a refrigerant outlet; the refrigerant inlet, the heat dissipation space and the refrigerant outlet are connected to form the heat dissipation channel.

3. The junction box as described in claim 2 is characterized in that the frame is also provided with a partition plate; the first space between the partition plates is a heat dissipation space; and the multiple heating units are installed on one side of the partition plate close to the first space.

4. The junction cabinet as described in claim 3 is characterized in that the two opposite sides of the frame are open surfaces; the first door body is provided with a refrigerant inlet, which is arranged on an open surface of the frame; the cabinet body also includes: a second door body, which is provided with a refrigerant outlet, which is arranged on another open surface of the frame; and there is a second space between the partition plate and the second door body.

5. The junction cabinet as described in claim 2 is characterized in that the refrigerant inlet and the refrigerant outlet are arranged diagonally; the refrigerant outlet is provided with an exhaust device; the partition is provided with an inlet at a position corresponding to the refrigerant inlet; the partition is used to cover the one opening surface of the frame so that the refrigerant inlet of the first door body, the inlet of the partition, the heat dissipation space and the refrigerant outlet of the second door body are connected in sequence to form the heat dissipation channel.

6. The junction box as described in claim 5 is characterized in that the partition is made of heat-insulating material; and/or the frame is a rectangular frame; and/or the frame is integrally formed; and/or the hinges of the first door body and the second door body are arranged diagonally; and/or the side of the partition plate close to the refrigerant outlet is connected to the refrigerant outlet through an air guide plate.

7. The combiner cabinet as claimed in claim 6, characterized in that an EMS display screen is provided in the heat-insulating space, and the EMS display screen is provided on a side of the first door body close to the interior of the cabinet body.

8. The combiner cabinet according to any one of claims 1 to 7, wherein the plurality of heating units include:

A first heating unit is arranged in a first partition of the cabinet;

A second heating unit, including a first voltage switch assembly, is disposed in a second partition of the cabinet;

The heat generated per unit time by the second heating unit is less than that by the first heating unit;

The first heating unit is close to the refrigerant inlet of the heat dissipation channel; the second heating unit is close to the refrigerant outlet of the heat dissipation channel; the heat conduction direction of the first heating unit and the second heating unit is consistent with the wind direction of the heat dissipation channel; the first voltage switch component includes multiple first voltage switches and a first bus; the multiple first voltage switches are connected to the power grid side through the first bus.

9 . The combiner cabinet according to claim 8 , wherein the first voltage switch assembly is a pre-installed switch module.

10. An energy storage system, characterized by comprising the combiner cabinet according to any one of claims 1 to 9.