CN119315596A

CN119315596A - Energy storage combined cabinet and battery energy storage system

Info

Publication number: CN119315596A
Application number: CN202310849038.5A
Authority: CN
Inventors: 曹乃锋; 曹勇; 杨大鹏; 王栋梁; 李净凯
Original assignee: China Aviation Lithium Battery Co Ltd
Current assignee: China Aviation Lithium Battery Co Ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2025-01-14

Abstract

The present application relates to the field of battery technology, and discloses an energy storage combined junction cabinet and a battery energy storage system. The energy storage combined junction cabinet includes a cabinet, and the cabinet has a storage space inside. The storage space is provided with an uninterruptible power supply room, a distribution room, a junction room, and a wiring room; the uninterruptible power supply room, the distribution room, and the junction room are arranged along a first direction, the uninterruptible power supply room is arranged near the top of the cabinet, and the junction room is arranged near the bottom of the cabinet; the wiring room is located on the side of the distribution room and the junction room, and the wiring room extends along the first direction; the distribution room includes a plurality of distribution modules, and the distribution module near the junction room includes a distribution plug-in box, and the distribution plug-in box is provided with a bottom plate on the side facing the junction room, and the side of the bottom plate away from the junction room is used to place distribution components; a partition is provided between the junction room and the wiring room. The energy storage combined junction cabinet disclosed in the present application improves the internal space and integration of the cabinet.

Description

Energy storage combined bus cabinet and battery energy storage system

Technical Field

The application relates to the technical field of batteries, in particular to an energy storage combined bus cabinet and a battery energy storage system.

Background

The energy ratio and cost of the battery energy storage system are very focused in the current market, and taking an energy storage container product as an example, the container with the same size can store more electric quantity and integrate more equipment is a trend. However, the existing battery energy storage products are mostly in split form, namely, the power distribution cabinet and the bus-bar cabinet are separate cabinets, and the space utilization rate of the separate power distribution cabinet and the bus-bar cabinet is very low, so that the integration level of the inside of the cabinets is not improved.

Disclosure of Invention

The application provides an energy storage combined bus cabinet and a battery energy storage system, which not only can improve the space utilization rate in the energy storage combined bus cabinet, but also can improve the integration level in the cabinet.

The application provides an energy storage combined bus cabinet, which comprises a cabinet, wherein an accommodating space is formed in the cabinet, and the accommodating space is provided with an uninterruptible power supply chamber, a power distribution chamber, a bus chamber and a wiring chamber;

The uninterruptible power supply chamber, the power distribution chamber and the converging chamber are arranged along a first direction, wherein the first direction is the arrangement direction between the top and the bottom of the cabinet, the uninterruptible power supply chamber is arranged close to the top of the cabinet, and the converging chamber is arranged close to the bottom of the cabinet;

the wiring chamber is positioned at the side edges of the distribution chamber and the converging chamber, the wiring chamber and the distribution chamber are arranged along a second direction, and the wiring chamber extends along the first direction;

The power distribution room comprises a plurality of power distribution modules, the power distribution modules close to the converging room comprise power distribution plug boxes, a bottom plate is arranged on one side, facing the converging room, of each power distribution plug box, and one side, facing away from the converging room, of each bottom plate is used for placing power distribution components;

A partition plate is provided between the confluence chamber and the wiring chamber.

The energy storage combined bus cabinet integrates the distribution room, the bus room, the uninterruptible power supply room and the wiring room into one cabinet, and improves the space utilization rate in the cabinet. And, because the high-voltage confluence function and the low-voltage distribution function are combined in one cabinet, the integration level in the cabinet can be improved, and the space occupation is reduced. Inside at the rack, through setting up the baffle between converging room and wiring room, the baffle has the effect of shielding electromagnetism, can avoid converging the indoor high-voltage equipment's of room magnetic field to produce the low-voltage distribution line in the wiring room and influence to guarantee converging room and wiring room can normal operating. In addition, the distribution module that the distribution room is close to the converging room is through setting up the distribution subrack, and the bottom plate of distribution subrack can shield electromagnetism, avoids the magnetic field that the indoor high-voltage equipment of converging produced to produce the low-voltage distribution equipment in the distribution room and influences to guarantee that the distribution room can normal operating. Therefore, the energy storage combined bus cabinet provided by the application integrates the power distribution room and the bus room into one cabinet, improves the space utilization rate and the integration level, and can also ensure the normal operation of each device.

In some possible embodiments, each of the power distribution modules includes the power distribution boxes, each of the power distribution boxes being aligned along the first direction;

Each power distribution plug box comprises a bottom plate and a plurality of panels, and the panels and the bottom plate are surrounded to form a box body structure of the power distribution plug box.

In some possible embodiments, the cabinet is provided with a cabinet door and a back plate which are oppositely arranged, and a mesh structure is arranged at a position of each bottom plate close to the back plate.

In some possible embodiments, the cabinet door is provided with an air inlet mesh near the bottom of the cabinet, the top of the cabinet is provided with an air outlet, and the air inlet mesh, the confluence chamber, the mesh structures, the uninterruptible power supply chamber and the air outlet are sequentially communicated to form a heat dissipation channel.

In some possible embodiments, the panel of each of the distribution boxes facing the cabinet door is provided with a plurality of switch handles.

In some possible embodiments, each panel of the distribution box facing the wiring compartment is provided with a plurality of pluggable interfaces for connection with cables within the wiring compartment.

In some possible embodiments, at least two wiring grooves are provided in the wiring chamber, wherein one part of the wiring grooves is used for arranging power supply lines, and the other part of the wiring grooves is used for arranging communication lines.

In some possible embodiments, the panel of each of the distribution boxes is provided with a device tag.

In some possible embodiments, a circuit breaker assembly, an input copper bar, and an output copper bar are disposed within the bussing chamber, both the input copper bar and the output copper bar being connected to the circuit breaker assembly;

the input copper bars and the output copper bars are arranged along the second direction, and the input copper bars and the output copper bars extend along the first direction respectively.

In some possible embodiments, the circuit breaker assembly includes at least one frame circuit breaker, each of the frame circuit breakers being connected to one energy storage stack by a pair of the input copper bars and the output copper bars, or

The circuit breaker assembly comprises at least one molded case circuit breaker, each of which is connected with an energy storage pile through a pair of the input copper bars and the output copper bars, or

The circuit breaker assembly includes at least one load switch, each of which is connected to an energy storage stack through a pair of the input copper bars and the output copper bars.

In some possible embodiments, both the junction room and the distribution room are provided with surge protectors.

In some possible embodiments, the partition is detachably connected to the cabinet.

In a second aspect, the present application provides a battery energy storage system comprising an energy storage integrated bus-bar as described in any one of the possible embodiments of the first aspect.

Drawings

FIG. 1 is an electrical schematic diagram of a battery energy storage system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an overall structure of an energy storage combined bus cabinet according to an embodiment of the application;

FIG. 3 is a schematic view illustrating the separation of the interior of the energy storage assembly bus cabinet according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a specific structure of an energy storage assembly bus cabinet according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a power distribution module according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a wiring groove according to an embodiment of the present application;

FIG. 7 is a schematic view of a portion of a bus chamber according to an embodiment of the application;

FIG. 8 is a schematic view of another embodiment of a junction box;

fig. 9 is a schematic structural view of a cabinet door of the cabinet according to the embodiment of the application;

Fig. 10 is a schematic structural diagram of a heat dissipation channel inside a cabinet according to an embodiment of the application.

In the figure:

100-cabinets, 110-top boards, 120-bottom carrier boards, 130-cabinet doors, 131-upper doors, 1311-indicator lights, 1312-display controls, 1313-emergency stop buttons, 132-lower doors, 1321-observation windows, 1322-air inlet meshes, 140-back boards, 150-side boards, 160-beams, 170-partition boards, 180-fans, 200-uninterruptible power supply chambers, 210-uninterruptible power supply hosts, 220-standby battery packs, 300-distribution chambers, 310a, 310b, 310 c-distribution modules, 311-distribution plug boxes, 3111-bottom boards, 3112-panels, 3113-switch handles, 3114a, 3114 b-pluggable interfaces, 3115-mesh structures, 312-distribution components, 400-junction chambers, 410-circuit breaker assemblies, 411-molded case circuit breakers, 420-input copper bars, 430-output copper bars, 500-wiring chambers, 510a, 510 b-wiring slots, 600-heat dissipation channels.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

With the continuous development of battery energy storage systems, the market demands for battery energy storage systems are also increasing, and taking energy storage container products as an example, containers with the same size can store more electric quantity and integrate more devices are becoming a trend. The existing battery energy storage products are matched with the power distribution cabinet and the bus-bar cabinet in a split mode, so that the space utilization rate of the power distribution cabinet and the bus-bar cabinet is low, most of components in the cabinet are in bulk on a cross beam or a back mounting plate inside the cabinet, and the depth space utilization rate of the cabinet is low. Secondly, the incoming copper bars and outgoing copper bars in the bus cabinet are arranged in the depth direction of the cabinet, and once the front copper bars (close to the cabinet door) are connected, the rear copper bar connection is inconvenient to operate and is easy to interfere in the front-back direction. In addition, components in the power distribution cabinet are mostly installed on the cross beam in the cabinet in a bulk mode, and the problem of confusion of component identification and inconvenient operation is easily caused because the position of the cross beam is at a deeper position in the cabinet (namely, a position far away from the cabinet door). Meanwhile, the components of the power distribution cabinet are frequently crossed, the power supply circuit and the communication circuit are usually arranged in one wire slot, and once individual components or circuits fail, the circuits in a large area are powered off during maintenance, so that the later maintenance is inconvenient. In addition, the lack of space shielding isolation between the high-voltage devices and the low-voltage lines in the bus cabinet is easy to cause electromagnetic interference.

Based on the problems, the embodiment of the application provides an energy storage combined bus cabinet and a battery energy storage system, which are used for solving the problems of low integration level, inconvenient bus connection, inconvenient switching operation, poor maintainability, high-low voltage electric interference and the like of the existing battery energy storage system. The energy storage assembly bus cabinet and the battery energy storage system are described in detail below with reference to specific embodiments.

Referring to fig. 1, fig. 1 is an electrical schematic diagram of a battery energy storage system according to an embodiment of the application. The battery energy storage system in the embodiment comprises a converging portion and a power distribution portion, wherein the converging portion is a direct current loop, and the power distribution portion is an alternating current loop. Specifically, in the confluence section, the battery cluster can output direct current, which is converged to the confluence chamber via the high voltage box, the direct current cable. And then, outputting the direct current output by the converging chamber to an energy storage converter (power conversion system, PCS) for alternating current inversion and grid connection, and finally outputting the direct current to an external power grid. The power distribution part is mainly used for supplying power to internal equipment of the battery energy storage system, an alternating current power supply can be obtained from an external power supply, the power supply is input into a power distribution room after passing through an isolation transformer, and the power distribution room and the load importance degree are used for power supply priority management. For example, the power distribution room supplies power to Battery Management Systems (BMS), switches and fire protection equipment, and also to air conditioning, in-cabinet fans, light equipment.

Referring to fig. 2 to 4, fig. 2 is a schematic overall structure of an energy storage combined bus cabinet according to an embodiment of the present application, fig. 3 is a schematic separation diagram of an interior of the energy storage combined bus cabinet according to an embodiment of the present application, and fig. 4 is a schematic specific structure of an interior of the energy storage combined bus cabinet according to an embodiment of the present application. The energy storage combined bus cabinet in the embodiment of the application comprises a cabinet 100, wherein the cabinet 100 comprises a top plate 110, a bottom carrier plate 120, a cabinet door 130, a back plate 140 and two side plates 150, wherein the top plate 110, the bottom carrier plate 120, the cabinet door 130, the back plate 140 and the two side plates 150 are oppositely arranged, and the cabinet 100 is enclosed by the top plate 110, the bottom carrier plate 120, the cabinet door 130, the back plate 140 and the two side plates 150. The cabinet door 130 may be opened or closed, and when the cabinet door 130 is opened, an operator may operate the equipment inside the cabinet 100. Wherein the top plate 110 and the bottom carrier plate 120 are arranged along a first direction, the two side plates 150 are arranged along a second direction, and the cabinet door 130 and the back plate 140 are arranged along a third direction.

The cabinet 100 has an uninterruptible power supply room 200, a distribution room 300, a junction room 400, and a wiring room 500 disposed therein, respectively, the uninterruptible power supply room 200 being disposed near the top plate 110, the junction room 400 being disposed near the bottom carrier plate 120, the distribution room 300 being located between the uninterruptible power supply room 200 and the junction room 400, that is, the uninterruptible power supply room 200, the distribution room 300, and the junction room 400 being sequentially arranged along the first direction. The wiring chamber 500 is located at one side of the distribution chamber 300 and the bus chamber 400, and the wiring chamber 500 is arranged in the second direction between the wiring chamber 500 and the distribution chamber 300, and the wiring chamber 500 is used to route distribution lines so as to be connected with the distribution chamber 300. It will be appreciated that the energy storage integrated bus bar of the present embodiment integrates the power distribution room and the bus room of fig. 1 into one cabinet 100, thereby improving the integration level. In addition, the power distribution room 300 and the bus room 400 are integrated into one cabinet 100, so that the cost can be conveniently reduced, the overall occupied space of the battery energy storage system can be reduced, more electric quantity space can be expanded for the battery pack, and the energy volume of the battery energy storage system is further improved.

In this embodiment, the ups mainframe 210 and the backup battery pack 220 may be disposed in the ups room 200, and when the mains supply is disconnected, the ups mainframe 210 and the backup battery pack 220 may perform uninterrupted power supply for a certain period of time to the devices in the cabinet 100. A plurality of power distribution modules 310 are arranged in the power distribution room 300, and each power distribution module 310 can distribute current to different loads and control the on-off of a power distribution loop. The number of the power distribution modules 310 can be designed according to actual use requirements, and when three power distribution modules 310 are set, the three power distribution modules 310 are, for example, a power distribution module 310a, a power distribution module 310b and a power distribution module 310c, wherein the power distribution module 310a can include a mains supply AC380V entering total breaker switch and a power-on indicator 1311, and can also manually control the on-off of a power distribution loop, and meanwhile, the power distribution module has a separation tripping function to ensure that a mains supply load is cut off when fire protection is started. The power distribution module 310a may also be equipped with a power meter for displaying power and displaying operating voltage and current conditions. In addition, the power distribution module 310a may be used to control three-way switching of the direct mains branch, the energy storage converter branch, and the uninterruptible current branch. The power distribution modules 310b and 310c may be configured identically, e.g., each of the power distribution modules 310b and 310c may be configured with multiple AC380V, multiple AC220V, multiple DC24V, to control different loads, respectively. Or the power distribution modules 310b and 310c may also configure the circuit for the communication switch and the communication switch.

With continued reference to fig. 4, as described above, the power distribution room 300 and the bus bar room 400 in the present embodiment are located in one cabinet 100, two beams 160 may be disposed inside the cabinet 100, and two ends of each beam 160 are respectively fixed to two side plates 150 on two sides, so that the interior of the cabinet 100 is divided into three spaces along the first direction, the space between the lower beam 160 and the bottom carrier 120 is used for configuring the bus bar room 400, the space between the two beams 160 is used for configuring the power distribution room 300, and the space between the upper beam 160 and the top plate 110 is used for configuring the uninterruptible power supply room 200. In addition, cross-beam 160 may also function as a load-bearing support for distribution room 300 and uninterruptible power supply room 200 in order to maintain stable placement of a plurality of distribution modules 310 and battery backup packs 220 within cabinet 100.

With continued reference to fig. 4, a separator 170 is disposed between the bus chamber 400 and the wiring chamber 500, and the material of the separator 170 may be a composite material, or the material of the separator 170 may also be a combination of metal and insulating material. Since the magnetic field generated by the high voltage device in the junction box 400 during the start-up or operation will affect the low voltage line in the wiring box 500, when the separator 170 is provided, insulation, electromagnetic shielding and heat insulation effects between the high voltage device and the low voltage line can be achieved, thereby avoiding electromagnetic interference generated by the junction box 400 from the line bundle in the wiring box 500.

The shelf 170 extends in a first direction and is also removably attachable to the cabinet 100 to facilitate assembly and maintenance of the cabinet 100 as a whole. Illustratively, the top end of the partition 170 is connected to the lower beam 160, and the bottom end of the partition 170 is connected to the bottom carrier plate 120 of the cabinet 100, so that the partition 170 can maximally isolate the wiring compartment 500 from the bus bar compartment 400. In a specific implementation, the partition 170 may connect the beam 160 and the bottom carrier 120 by means of bolting, or the partition 170 may further be provided with a clamping structure, so as to be clamped with the beam 160 and the bottom plate 3111 carrier, respectively. Of course, the partition 170 may be connected to the cabinet 100 by other manners, which is not limited in this embodiment.

Referring to fig. 4 and fig. 5 together, fig. 5 is a schematic structural diagram of a power distribution module 310 according to an embodiment of the application. The distribution module 310 adjacent to the junction box 400 may include a distribution box 311, where the distribution box 311 includes a base plate 3111 and a plurality of panels 3112, and the plurality of panels 3112 and the base plate 3111 are enclosed in a box structure with an opening at a top end. The side of the bottom plate 3111 facing the top plate 110 of the cabinet 100 may be used to place the power distribution components 312, and the bottom plate 3111 may serve to space the power distribution chamber 300 from the bus bar chamber 400 due to the structure of the bottom plate 3111 between the power distribution chamber 300 and the bus bar chamber 400. Specifically, the bottom plate 3111 can realize electromagnetic shielding between the high-voltage devices in the junction box 400 and the low-voltage power distribution devices in the power distribution box 300, and at the same time, the bottom plate 3111 can also play a role of heat insulation, so that excessive heat generated during operation of the high-voltage devices in the junction box 400 is prevented from being transferred to the power distribution box 300.

As described above, the distribution room 300 may be provided with a plurality of distribution modules 310, and as an embodiment, each distribution module 310 may be designed as a structure of the distribution module 310 close to the junction room 400, that is, each distribution module 310 includes a distribution box 311, each distribution box 311 includes a base plate 3111 and a plurality of panels 3112, and the distribution components 312 may be disposed on the base plate 3111. The plurality of distribution boxes 311 are sequentially arranged along the first direction, so that the distribution modules 310 can be relatively independent of each other due to the structural form of the plurality of distribution boxes 311, interference among the distribution modules is avoided, and the base plate 3111 of each distribution box 311 can also have a heat insulation effect on adjacent distribution modules 310.

With continued reference to fig. 5, a plurality of switch handles 3113 are provided on a face plate 3112 of the distribution box 311 adjacent to the cabinet door 130, the plurality of switch handles 3113 being operable to control switching of electrical circuits of the plurality of distribution components 312 within the distribution box 311. It can be appreciated that, since the switch handle 3113 is disposed near the cabinet door 130, the operator can control the on/off of the switch handle 3113 by opening the cabinet door 130, thus improving the convenience of the operator.

Further, a plurality of pluggable interfaces 3114 may be provided on the panel 3112 on the side of the distribution box 311 facing the wiring closet 500, and each pluggable interface 3114 may be connected to the distribution component 312 inside the distribution box 311. The pluggable interfaces 3114 may be divided into pluggable interfaces 3114a for plugging power cables and pluggable interfaces 3114b for plugging communication cables, for example, the pluggable interfaces 3114a are all disposed on one side of the panel 3112 near the cabinet door 130, and the pluggable interfaces 3114b are all disposed on one side of the panel 3112 near the back panel 140, so that different cables can be plugged with the distribution box 311 according to a certain rule. Therefore, the assembly wiring rate of the equipment and the wiring accuracy are improved, the manual assembly cost is reduced, and the spliced connection mode is also convenient for assembly and maintenance.

Based on this, referring to fig. 6, fig. 6 is a schematic structural diagram of the wiring groove 510 according to an embodiment of the present application. At least two wiring grooves 510 may be further provided in the wiring chamber 500, wherein one part of the wiring grooves 510 is used for arranging power supply lines and the other part of the wiring grooves 510 is used for arranging communication lines. Taking the example of two wiring grooves 510 provided in the wiring chamber 500, the two wiring grooves 510 may be provided on the inner wall of the adjacent side plate 150, and the two wiring grooves 510 are arranged in the third direction, wherein the wiring groove 510a is used for arranging power supply lines, and the wiring groove 510b is used for arranging communication lines. Each wiring slot 510 extends to the bottom carrier plate 120 of the cabinet 100 so that each cable can pass through the bottom carrier plate 120 to connect with equipment external to the cabinet 100.

In addition, since the surface of the panel 3112 of the distribution box 311 is relatively flat, a device tag may be attached to the panel 3112 to identify different structures. For example, the device tags may identify the lines controlled by each switch handle 3113, or may also identify the power distribution components 312 to which different pluggable interfaces 3114 are connected, to facilitate operator identification of the switch handles 3113, pluggable interfaces 3114 on the faceplate 3112.

In some embodiments, each distribution box 311 may be in a push-pull connection with the cabinet 100, for example, an inner wall of the side plate 150 on a side of the cabinet 100 away from the wiring room 500 may be provided with a sliding groove, the sliding groove extends along a third direction, and a panel 3112 on a side of the distribution box 311 facing the sliding rail is provided with a sliding rail, and the sliding rail and the sliding groove are in sliding fit, so as to enable the distribution box 311 to move along the third direction relative to the cabinet 100. Thus, when a worker needs to check or maintain the components in the distribution box 311, the worker only needs to pull out a part of the distribution box 311 from the inside of the cabinet 100, so that the operation is convenient. In addition, the distribution box 311 may further be provided with a locking structure, so that the distribution box 311 is relatively fixed with the cabinet 100 by the locking structure when pushed and pulled to a certain position in the cabinet 100.

Referring to fig. 4 and fig. 7 together, fig. 7 is a schematic view of a portion of the structure of the chamber 400 according to an embodiment of the application. The current collecting chamber 400 is provided with a circuit breaker assembly 410, an input copper bar 420 and an output copper bar 430, wherein the circuit breaker assembly 410 has manual and automatic switching functions so as to control the on-off of a loop. One end of the input copper bar 420 is connected to the breaker assembly 410, and the other end is connected to a device (e.g., a battery cluster) external to the cabinet 100, and similarly, one end of the output copper bar 430 is connected to the breaker assembly 410, and the other end is connected to a device (e.g., an energy storage converter) external to the cabinet 100 to complete the loop connection of the junction box 400. The input copper bars 420 and the output copper bars 430 are at least one group, and when a plurality of groups of the input copper bars 420 and the output copper bars 430 are provided, the plurality of groups of the input copper bars 420 and the output copper bars 430 are arranged along the second direction, and in one group of copper bars, the input copper bars 420 and the output copper bars 430 are also arranged along the second direction. Meanwhile, each of the input copper bars 420 extends in the first direction, and each of the output copper bars 430 also extends in the first direction, that is, the input copper bars 420 and the output copper bars 430 are respectively disposed in the longitudinal direction. Thus, only one copper bar is provided in the depth direction (third direction) of the cabinet 100, and there is no overlapping in the front-rear direction, so that the problem of wiring interference can be effectively avoided.

In some embodiments, referring to fig. 8, fig. 8 is a schematic diagram of another structure of a junction box 400 according to an embodiment of the present application. The circuit breaker assembly 410 may include at least one molded case circuit breaker 411, and when the number of molded case circuit breakers 411 is 2 or more, each molded case circuit breaker 411 is disposed in parallel, and illustratively, two adjacent molded case circuit breakers 411 may be connected in parallel through a lateral copper bar. And, each molded case circuit breaker 411 is connected to a set of input copper bars 420 and output copper bars 430. Taking fig. 8 as an example, two molded case circuit breakers 411 are disposed in the bus chamber 400, and each molded case circuit breaker 411 is connected to one energy storage stack through an input copper bar 420, wherein each energy storage stack includes one or more battery clusters. It can be appreciated that when the two molded case circuit breakers 411 are provided, all the battery clusters of the battery energy storage system can be divided into two small energy storage stacks, so that independent on-off control of the two energy storage stacks can be realized, and when one of the energy storage stacks fails, the loop of the energy storage stack can be independently cut off for maintenance, and the normal operation of the other energy storage stack can not be influenced, thereby bringing better use experience. That is, when a plurality of molded case circuit breakers 411 are provided, the battery clusters may be divided into a corresponding number of energy storage stacks, and independent operation of each energy storage stack is achieved. In addition, the molded case circuit breaker 411 is provided in the present embodiment, which has low cost and small size, so that the cost of the circuit breaker assembly 410 can be conveniently reduced.

It should be noted that in addition to the arrangement of the circuit breaker assembly 410 including at least one molded case circuit breaker 411 in the above embodiments, in other embodiments, the circuit breaker assembly 410 may also include at least one frame circuit breaker, and when the number of frame circuit breakers is 2 or more, the frame circuit breakers are connected in parallel. And, each frame breaker is connected to one energy storage stack through a set of input copper bars 420 and output copper bars 430. Or the breaker assembly can also comprise at least one load switch, and when the number of the load switches is greater than or equal to 2, the load switches are connected in parallel. And, each load switch is connected to one energy storage stack through a set of input copper bars 420 and output copper bars 430.

In some embodiments, surge protectors (not shown) may also be provided within the junction box 400 and the distribution box 300, respectively, which may protect the equipment within the junction box 400 and the distribution box 300 from damage caused by lightning strikes.

In some embodiments, referring to fig. 9, fig. 9 is a schematic structural diagram of a cabinet door 130 of the cabinet 100 according to an embodiment of the present application. The cabinet door 130 in this embodiment may include an upper door 131 and a lower door 132, the upper door 131 and the lower door 132 may be opened and closed, respectively, and a boundary between the upper door 131 and the lower door 132 may coincide with a boundary between the junction room 400 and the distribution room 300. That is, the devices in the distribution room 300 may be operated when the worker opens the upper door 131, and the devices in the junction room 400 may be operated when the worker opens the lower door 132.

The upper door 131 may be provided with a display control 1312, an indicator lamp 1311, an emergency stop button 1313, etc. so that an operator can control the on/off of a loop in the power distribution room 300 according to the indication of the display control 1312, the indicator lamp 1311, etc. The lower door 132 may be provided with an observation window 1321 and an air intake mesh 1322, wherein the air intake mesh 1322 is located near the bottom of the cabinet 100, and the air intake mesh 1322 may facilitate cold air outside the cabinet 100 to enter the cabinet 100, thereby dissipating heat from devices inside the cabinet 100.

Referring to fig. 5, 9 and 10 together, fig. 10 is a schematic structural diagram of a heat dissipation channel 600 inside a cabinet 100 according to an embodiment of the application. As shown in fig. 5, a mesh structure 3115 is disposed on a portion of the bottom plate 3111 of each distribution box 311 near the back plate 140 of the cabinet 100, and the mesh structures 3115 of the bottom plates 3111 may be disposed opposite to each other, and the mesh structures 3115 may facilitate passage of gas. Since the top end of each distribution box 311 has an opening, the gas can sequentially pass through the mesh structure 3115 of each distribution box 311, so as to ensure that the gas can smoothly circulate inside the cabinet 100. As described above, the bottom of the lower door 132 is provided with the air inlet holes 1322, and the top plate 110 of the cabinet 100 is provided with the air outlet, and the air inlet holes 1322, the confluence chamber 400, the mesh structures 3115, the uninterruptible power supply chamber 200 and the air outlet are sequentially communicated, thereby forming the heat dissipation channel 600. In the embodiment, a fan 180 may be disposed at the air outlet, and when cold air enters the cabinet 100 through the air inlet holes 1322, the cold air may sequentially pass through the copper bars in the bus chamber 400, the mesh structure 3115 of each distribution box 311, and the rear air duct of the uninterruptible power supply chamber 200 under the suction effect of the fan 180, and then be discharged out of the cabinet 100 through the air outlet. Therefore, when cold air circulates in the cabinet 100, the cold air can pass through the heating equipment as much as possible from bottom to top, so that the heat dissipation effect in the cabinet 100 can be improved, and the equipment in the cabinet 100 is prevented from being overheated and failed or burnt out.

When the mesh structure 3115 is disposed on the base plate 3111 of the distribution box 311, the mesh structure 3115 can occupy one third of the space of the base plate 3111 along the third direction, and the remaining two thirds of the space can be used for placing the distribution components 312, so that the space utilization rate in the distribution box 311 can be improved, and a good heat dissipation effect can be achieved. It should be understood that the space occupied by the mesh structure 3115 is merely illustrative, and the space occupied by the mesh structure 3115 and the power distribution component 312 can be adjusted according to the requirement in practical application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The energy storage combined bus cabinet is characterized by comprising a cabinet, wherein an accommodating space is formed in the cabinet, and the accommodating space is provided with an uninterruptible power supply chamber, a power distribution chamber, a bus chamber and a wiring chamber;

2. The energy storage integrated combiner cabinet of claim 1, wherein each of the power distribution modules comprises the power distribution boxes, each of the power distribution boxes being aligned along the first direction;

3. The energy storage integrated bus cabinet according to claim 2, wherein the cabinet is provided with a cabinet door and a back plate which are oppositely arranged, and a mesh structure is arranged at a position, close to the back plate, of each bottom plate.

4. The energy storage combined bus cabinet according to claim 3, wherein an air inlet mesh is arranged at a position of the cabinet door close to the bottom of the cabinet, an air outlet is arranged at the top of the cabinet, and the air inlet mesh, the bus chamber, the mesh structures, the uninterruptible power supply chamber and the air outlet are sequentially communicated to form a heat dissipation channel.

5. The energy storage integrated combiner cabinet according to claim 3, wherein the panel of each of the distribution cabinets facing the cabinet door is provided with a plurality of switch handles.

6. The energy storage integrated combiner cabinet according to claim 2, wherein each panel of the distribution boxes facing the wiring compartment is provided with a plurality of pluggable interfaces for connection with cables within the wiring compartment.

7. The energy storage integrated bus cabinet according to claim 6, wherein at least two wiring grooves are formed in the wiring chamber, wherein one part of the wiring grooves is used for arranging power supply lines, and the other part of the wiring grooves is used for arranging communication lines.

8. The energy storage integrated closet of claim 2 wherein said panel of each said distribution box is provided with a device tag.

9. The energy storage integrated bus cabinet according to claim 1, wherein a circuit breaker assembly, an input copper bar and an output copper bar are arranged in the bus chamber, and the input copper bar and the output copper bar are connected with the circuit breaker assembly;

10. The energy storage combiner cabinet of claim 9, wherein the circuit breaker assembly comprises at least one frame circuit breaker, each of the frame circuit breakers connected to one energy storage stack by a pair of the input copper bars and the output copper bars, or

11. The energy storage integrated closet of claim 1, wherein both the closet and the distribution room are provided with surge protectors.

12. The energy storage integrated combiner cabinet of claim 1, wherein the partition is detachably connected to the cabinet.

13. A battery energy storage system comprising an energy storage composite bus cabinet according to any one of claims 1 to 12.