Container energy storage PCS and confluence integrated cabinet and container energy storage system

Abstract

The embodiment of the utility model relates to the technical field of energy storage cabinets, and discloses a PCS and confluence integrated cabinet for container energy storage and a container energy storage system.The PCS and confluence integrated cabinet for container energy storage comprises a cabinet body and a cabinet door, and a plurality of PCS devices and a plurality of confluence devices are arranged in the cabinet body; the cabinet body is also provided with a PCS device interface and a convergence device interface. The PCS equipment interface is used for connecting the PCS equipment with a battery end, and the confluence equipment interface is used for connecting the confluence equipment with a load side and a power grid side. By means of the mode, the occupied space of the equipment cabin by the equipment cabinet is effectively reduced, and the energy density of the whole energy storage system is improved.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of container energy storage, and specifically relate to a PCS and busbar integration cabinet for container energy storage and a container energy storage system. Background Art

[0002] Currently, the main components of a new energy container large-scale energy storage system include: a battery pack, a BMS (Battery Management System), an EMS (Energy Management System), a PCS (Energy Storage Inverter), a busbar power distribution cabinet, etc. Each component is particularly important and indispensable.

[0003] In the past, the PCS part and the busbar power distribution components in a container large-scale energy storage were divided into two parts and placed in two cabinets respectively, that is, the PCS cabinet and the busbar integration cabinet commonly referred to in the art. For the convenience of after-sales service of the cabinets, there is a certain distance between the two cabinets to provide space for opening the cabinet doors and operating space for later after-sales maintenance. This results in the two cabinets occupying a relatively large space in the energy storage system, which is not conducive to the energy density of the entire energy storage system. Moreover, there are many power harnesses and communication harnesses between the two cabinets, which are relatively long and costly. Summary of the Invention

[0004] In view of the above problems, the embodiments of the present utility model provide a PCS and busbar integration cabinet for container energy storage, which is used to solve the technical problems in the prior art that two cabinets occupy a relatively large volume, and the lines are relatively long and costly.

[0005] According to one aspect of the embodiments of the present utility model, there is provided a PCS and busbar integration cabinet for container energy storage. The PCS and busbar integration cabinet for container energy storage includes: a cabinet body and a cabinet door. A plurality of PCS devices and a plurality of busbar devices are arranged in the cabinet body; a PCS device interface and a busbar device interface are further arranged on the cabinet body; the PCS device interface is used for connecting the PCS device to the battery end, and the busbar device interface is used for connecting the busbar device to the load side and the grid side.

[0006] In an optional manner, the cabinet body includes a plurality of regions formed by separating with a plurality of cabinet boards. The plurality of regions include a power distribution cabinet region, a standard module region, a main control region, a busbar input / output region, and a protection circuit region;

[0007] The power distribution cabinet region, the standard module region, and the main control region respectively load a plurality of the PCS devices; the busbar input / output region loads the plurality of busbar devices;

[0008] Among them, each of the PCS devices is electrically connected to each other, each of the PCS devices is electrically connected to each of the busbar devices, and each of the busbar devices is electrically connected to each other.

[0009] In an alternative manner, multiple regions are obtained by dividing according to the circuit connection relationships among multiple PCS devices, between PCS devices and busbar devices, and between busbar devices, as well as the device sizes of the multiple PCS devices and multiple busbar devices.

[0010] In an alternative manner, the power distribution cabinet region includes an electric energy meter, a lightning arrester, an energy management module, a terminal block, and an air switch;

[0011] The main control region includes multiple main control boxes and limit switches;

[0012] The standard module region includes at least one energy storage inverter module, multiple DC-DC power supplies, and multiple photovoltaic input modules;

[0013] The busbar input region includes at least one PCS DC-side busbar, at least one PCS AC-side busbar, and DCDC input busbar;

[0014] The busbar output region includes DCDC output busbar;

[0015] The protection circuit includes a meter current transformer and a circuit breaker.

[0016] In an alternative manner, the power distribution cabinet region further includes a UPS main unit and a UPS battery pack, and a socket; the UPS main unit and the UPS battery pack are used to provide backup power for the PCS and busbar integration cabinet of the container energy storage when the PCS and busbar integration cabinet of the container energy storage is powered off.

[0017] In an alternative manner, the cabinet body includes an opening at the back and an opening at the front; the power distribution cabinet region, the standard module region, and the main control region are arranged at the front opening; the busbar input / output region and the protection circuit region are arranged at the back opening.

[0018] In an alternative manner, a front cabinet door is provided at the front opening, and a back cabinet door is provided at the back opening; an operation screen, an indicator light, an air inlet, and an air outlet are provided on the front cabinet door and / or the back cabinet door;

[0019] The operation screen is connected to at least one main control box in the main control region, and is used to control multiple PCS devices and multiple busbar devices in the PCS and busbar integration cabinet of the container energy storage;

[0020] The indicator light is used to indicate the status information of the multiple PCS devices and multiple busbar devices;

[0021] The air inlet and the air outlet are used for the PCS and busbar integration cabinet of the container energy storage.

[0022] In an alternative embodiment, a temperature and humidity measuring device and a heat dissipation device are further provided inside the cabinet;

[0023] The temperature and humidity measuring device is configured to measure the temperature and humidity inside the cabinet and send the temperature and humidity information to at least one main control box in the main control area, and the main control box sends the temperature and humidity information to the operation screen;

[0024] The heat dissipation device is used to dissipate heat from the cabinet.

[0025] In an alternative embodiment, a hidden forklift position is further provided at the bottom of the cabinet.

[0026] According to another aspect of the embodiments of the present invention, a container energy storage system is provided, including: the PCS and the busbar integration cabinet of the container energy storage as described above.

[0027] The PCS and the busbar integration cabinet of the container energy storage according to the embodiments of the present invention include a cabinet body and a cabinet door. A plurality of PCS devices and a plurality of busbar devices are arranged inside the cabinet body; PCS device interfaces and busbar device interfaces are further arranged on the cabinet body; the PCS device interfaces are used for connecting the PCS devices to the battery side, and the busbar device interfaces are used for connecting the busbar devices to the load side and the grid side. By integrating a plurality of PCS devices and a plurality of busbar devices into one cabinet, not only the cost of one cabinet and the power lines and communication lines between the cabinets are saved, but also the occupied space of the cabinet on the equipment cabin can be reduced, which is beneficial to improving the energy density of the entire energy storage system, achieving two birds with one stone.

[0028] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are specifically exemplified below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0030] Figure 1 A perspective view of the PCS and the busbar integration cabinet of the container energy storage provided by the embodiments of the present invention with the cabinet door removed is shown;

[0031] Figure 2Shows the internal structure schematic diagram of the front opening of the PCS and busbar integration cabinet for container energy storage provided by the embodiment of the present utility model;

[0032] Figure 3 Shows the internal structure schematic diagram of the back opening of the PCS and busbar integration cabinet for container energy storage provided by the embodiment of the present utility model;

[0033] Figure 4 Shows the back cabinet door schematic diagram of the PCS and busbar integration cabinet for container energy storage provided by the embodiment of the present utility model;

[0034] Figure 5 Shows the front cabinet door schematic diagram of the PCS and busbar integration cabinet for container energy storage provided by the embodiment of the present utility model;

[0035] Figure 6 Shows the topology structure schematic diagram of the container energy storage system provided by the embodiment of the present utility model.

[0036] The attached drawing reference numerals in the specific embodiments are as follows:

[0037] Cabinet body 10, power distribution cabinet area 100, electric energy meter 110, lightning arrester 120, energy management module 130, terminal block 140, 2P air switch 150, 4P air switch 160, socket 170, UPS host 1801, UPS battery pack 1802, limit switch 190, standard module area 200, first PCS 210, second PCS 220, third PCS 230, fourth PCS 240, first DC-DC power supply 250, second DC-DC power supply 260, third DC-DC power supply 270, fourth DC-DC power supply 280, first photovoltaic input module 290, second photovoltaic input module 291, fifth DC-DC power supply 292, sixth DC-DC power supply 293, seventh DC-DC power supply 294, eighth DC-DC power supply 295, main control area 300, first main control box 310, second main control box 320, third main control box 330, fourth main control box 340, busbar input and output area 400, PCS DC side busbar (positive pole) 410, PCS DC side busbar (negative pole) 420, PCS AC side busbar (phase A) 430, PCS AC side busbar (phase B) 440, PCS AC side busbar (phase C) 450, PCS AC side busbar (neutral phase) 460, DCDC output busbar (positive pole) 470, DCDC output busbar (negative pole) 480, DCDC input busbar (negative pole) 490, DCDC input busbar (positive pole) 411, operation screen 5101, emergency stop switch (EMS) 5102A, emergency stop switch (12V / 24V) 5102B, power indicator light 5103A, operation indicator light 5103B, fault indicator light 5103C, air inlet 5104, air outlet 5105, protection circuit area 600, meter transformer 610, circuit breaker 620, cabinet board 70. Detailed implementation manners

[0038] The embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0039] First, the technical terms appearing in the embodiments of the present invention are explained:

[0040] PCS (Power Conversion System) Cabinet: The PCS can control the charging and discharging processes of the battery, perform AC / DC conversion, and directly supply power to AC loads in the absence of a power grid. The PCS consists of a DC / AC bidirectional converter, a main control box, etc. The PCS controller receives background control instructions through communication, controls the converter to charge or discharge the battery according to the sign and magnitude of the power instruction, and realizes the regulation of active and reactive power of the power grid. The PCS controller communicates with the BMS through the CAN interface, obtains the status information of the battery pack, and can realize the protective charging and discharging of the battery to ensure the safe operation of the battery.

[0041] Busbar Power Distribution Cabinet: The busbar power distribution cabinet of the energy storage system is a key device in the energy storage power station, and its main functions are the centralized management, distribution, and protection of electric energy. The following is a detailed introduction to the busbar power distribution cabinet of the energy storage system:

[0042] 1. Current Convergence: The busbar power distribution cabinet can converge the currents of multiple energy storage units (such as battery packs) together to form a unified electric energy output to meet the needs of the power system. This ability ensures the effective concentration and utilization of electric energy.

[0043] 2. Electric Energy Distribution: The converged electric energy is distributed to different loads or devices through the busbar power distribution cabinet to meet various power demands. This helps to achieve the optimal allocation of energy and improve the energy utilization efficiency.

[0044] 3. Electric Energy Protection: The busbar power distribution cabinet is equipped with various protection devices, such as overcurrent protection, overvoltage protection, overtemperature protection, etc., to ensure the safe transmission and use of electric energy. These protection measures can monitor the electric energy status in real time. Once an abnormality is detected, corresponding measures will be taken promptly to protect the safety of equipment and personnel.

[0045] Please refer to Figure 1 , Figure 1 which shows a perspective view of the PCS and busbar integrated cabinet of the container energy storage of the present utility model after removing the cabinet door. The PCS and busbar integrated cabinet of the container energy storage includes a cabinet body 10 and a cabinet door. A plurality of PCS devices and a plurality of busbar devices are arranged in the cabinet body 10, and PCS device interfaces and busbar device interfaces are also arranged on the cabinet body 10. Among them, the PCS device interface is used to connect the PCS device to the battery end, and the busbar device interface is used to connect the busbar device to the load side and the power grid side. In the embodiment of the present utility model, by integrating a plurality of PCS devices and a plurality of busbar devices into one cabinet, not only the cost of one cabinet and the power lines and communication lines between the cabinets are saved, but also the occupied space of the cabinet in the equipment compartment can be reduced, which is beneficial to improving the energy density of the entire energy storage system.

[0046] As Figure 2 andFigure 3 As shown, in the embodiment of the present utility model, the cabinet body 10 includes a plurality of areas formed by isolating with a plurality of cabinet boards 70. Among them, the sizes of the plurality of areas formed by the cabinet boards 70 are set according to the sizes of the devices. Among them, the plurality of areas are divided according to the circuit connection relationships between a plurality of PCS devices, between the PCS devices and the busbar devices, and between the busbar devices, as well as the device sizes of the plurality of PCS devices and the plurality of busbar devices. By reasonably dividing the plurality of areas, the PCS devices and the busbar devices can be integrated into one cabinet, reducing the circuit connection wires. The plurality of areas include a power distribution cabinet area 100, a standard module area 200, a main control area 300, a busbar input / output area 400, and a protection circuit area 600. Among them, the power distribution cabinet area 100, the standard module area 200, and the main control area 300 respectively load a plurality of the PCS devices, and the busbar input / output area 400 respectively loads the plurality of busbar devices. Electrical connections are made between each PCS device, between each PCS device and each busbar device, and between each busbar device. In a specific implementation, the power distribution cabinet area 100 includes an electric energy meter 110, a lightning arrester (SPD1) 120, an energy management module (EMS) 130, a terminal block 140, and an air switch. The air switch can include a 2P air switch 150 and a 4P air switch 160. Among them, the power distribution cabinet area 100 further includes a UPS main unit 1801, a UPS battery pack 1802, and a socket 170. The socket can be a 220V debugging socket. The UPS main unit and the UPS battery pack are used to provide backup power for the PCS and busbar integrated cabinet for container energy storage when the PCS and busbar integrated cabinet for container energy storage is powered off. By setting the UPS main unit 1801 and the UPS battery pack 1802, when the entire system of the PCS and busbar integrated cabinet for container energy storage stops operating due to a fault, it can be powered by the UPS main unit 1801 and the UPS battery pack 1802 inside the cabinet body 10 without relying on other external devices, increasing the reliability of the operation of the devices inside the cabinet body 10.

[0047] Among them, the main control area 300 includes a plurality of main control boxes and a limit switch 190. Specifically, it can include 4 main control boxes, namely a first main control box 310, a second main control box 320, a third main control box 330, and a fourth main control box 340. Among them, the plurality of main control boxes include both the main control boxes in the PCS devices and the main control boxes of the busbar devices. Among them, the plurality of main control boxes are electrically connected to the operation screen 5101 and the indicator lights on the cabinet door.

[0048] ​Among them, the standard module area 200 includes at least one energy storage converter module, multiple DC-DC power supplies, and multiple photovoltaic input modules. Specifically, the energy storage converter module may include a first PCS 210, a second PCS 220, a third PCS 230, and a fourth PCS 240; the multiple DC-DC power supplies may include a first DC-DC power supply 250, a second DC-DC power supply 260, a third DC-DC power supply 270, a fourth DC-DC power supply 280, a fifth DC-DC power supply 292, a sixth DC-DC power supply 293, a seventh DC-DC power supply 294, and an eighth DC-DC power supply 295; the multiple photovoltaic input modules may include a first photovoltaic input module 290 and a second photovoltaic input module 291.

[0049] In the embodiment of the present utility model, the busbar input / output area 400 includes at least one PCS DC-side busbar, at least one PCS AC-side busbar, DCDC input busbar, and DCDC output busbar. Specifically, it may include a PCS DC-side busbar (positive electrode) 410, a PCS DC-side busbar (negative electrode) 420, a PCS AC-side busbar (phase A) 430, a PCS AC-side busbar (phase B) 440, a PCS AC-side busbar (phase C) 450, a PCS AC-side busbar (phase N) 460, a DCDC output busbar (positive electrode) 470, a DCDC output busbar (negative electrode) 480, a DCDC input busbar (negative electrode) 490, and a DCDC input busbar (positive electrode) 411.

[0050] Among them, the protection circuit area 600 includes an ammeter transformer 610 and a circuit breaker 620, and the circuit breaker is an AC grid-connected circuit breaker. The ammeter transformer 610 and the circuit breaker 620 are electrically connected to the main control box and are used for circuit protection according to the indication signal of the main control box.

[0051] Among them, the cabinet 10 further includes a rear opening and a front opening, and the rear opening and the front opening respectively correspond to their respective cabinet doors. The cabinet doors are arranged at the rear opening and the front opening to cover the rear opening or the front opening. In an embodiment of the present utility model, as Figure 2 shown, the power distribution cabinet area 100, the standard module area 200, and the main control area 300 are arranged at the front opening. As Figure 3 shown, the busbar input / output area 400 and the protection circuit area 600 are arranged at the rear opening. A front cabinet door is arranged at the front opening, and a rear cabinet door is arranged at the rear opening.

[0052] Please refer to Figure 4 and Figure 5 , Figure 4 which shows a schematic diagram of the rear cabinet door of the PCS and busbar integrated cabinet for container energy storage provided by the embodiment of the present utility model; Figure 5The front door schematic diagram of the PCS and confluence integrated cabinet for container energy storage provided by the embodiment of the utility model is shown. The front door and / or the back door are provided with an operation screen 5101, an indicator light, an air inlet 5104, an air outlet 5105 ( Figure 5 A schematic diagram of the cabinet door provided on the front side is shown). The operation screen 5101 is connected to at least one main control box of the main control area 300, and is used to control the multiple PCS devices and multiple convergence devices in the PCS and convergence integrated cabinet of the container energy storage. The operation screen 5101 can be an HDMI operation screen, which allows users to view the operating status information of the equipment in the cabinet 10, and input operating instructions so that the corresponding main control box controls the corresponding equipment to perform corresponding actions. Indicator lights are used to indicate the status information of the cabinet 10 and the multiple PCS devices and multiple convergence devices in the cabinet 10. The multiple indicator lights include a power indicator light 5103A, an operation indicator light 5103B, and a fault indicator light 5103C. Since the PCS equipment needs to dissipate heat, etc., an air inlet 5104 and an air outlet 5105 are provided on the cabinet door for the PCS and convergence integrated cabinet of the container energy storage. The front cabinet door and / or the back cabinet door are also provided with an emergency stop switch (EMS) 5102A and an emergency stop switch (12V / 24V) 5102B, which are used for manual emergency control when the equipment in the cabinet body 10 operates abnormally.

[0053] In the embodiment of the utility model, the cabinet 10 is also provided with a temperature and humidity measuring device and a heat dissipation device. The heat dissipation device and the temperature and humidity measuring device may be the cooling fan and the temperature and humidity measuring device of each module in the PCS device and / or the confluence device, or may be the temperature and humidity measuring device and the heat dissipation device independently provided in the cabinet 10. The temperature and humidity measuring device is used to measure the temperature and humidity in the cabinet 10, and send the temperature and humidity information to at least one main control box in the main control area 300, and the main control box sends the temperature and humidity information to the operation screen 5101. The temperature information includes the temperature value and the humidity value. The heat dissipation device is used to dissipate the heat of the cabinet 10. The main heat generating devices in the cabinet 10 include PCS (such as the first PCS 210, the second PCS 220, the third PCS 230, and the fourth PCS 240), DCDC modules (DCDC input confluence and DCDC output confluence) and MPPT modules. These module devices have their own cooling fans and their own temperature monitoring modules. Therefore, these modules can adjust the speed of the cooling fan according to their own temperature and the power of charging or discharging to ensure that there is no problem in heat dissipation. In another embodiment of the utility model, the heat dissipation device can be a heat dissipation pipe and a heat dissipation fan or a heat dissipation fan. The heat dissipation pipe and the heat dissipation fan can be arranged near the air inlet 5104 and the air outlet 5105 on the cabinet door to facilitate heat dissipation in the cabinet 10.

[0054] Among them, a hidden forklift position is also provided at the bottom of the cabinet body 10. The forklift position is hidden by the front and rear decorative panels at the bottom. When using the forklift position, the decorative panels are removed, and the forklift position can be exposed for the transfer and transportation of the cabinet body 10. When not in use, the decorative panels are installed to make the appearance more beautiful.

[0055] In the embodiment of the present utility model, two previous cabinets are integrated into one cabinet, reducing the occupied area of the cabinets for the entire energy storage system, providing a larger area for the battery placement area, thereby increasing the energy density of the entire energy storage system. Reducing one cabinet can effectively reduce the cost of the energy storage system. Reducing the high-voltage cables and low-voltage communication harnesses between the two cabinets reduces the cost of the energy storage system. Integrating one cabinet makes the later component assembly more convenient, effectively improving the assembly efficiency and reducing the labor cost.

[0056] In another embodiment of the present utility model, a container energy storage system is further provided. The container energy storage system includes the PCS and the busbar integration cabinet of the above-mentioned container energy storage. As Figure 6 shown, the container energy storage system further includes a battery terminal, a load side, and a grid side. Among them, the battery terminal is connected to the PCS device interface of the PCS and the busbar integration cabinet of the container energy storage, and the load side and the grid side are connected to the busbar device interface.

[0057] It should be noted that unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present utility model should be the ordinary meanings understood by those skilled in the art to which the embodiments of the present utility model belong.

[0058] In the description of the embodiments of the present utility model, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model.

[0059] In addition, the technical terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the embodiments of the present utility model, "a plurality" means more than two unless otherwise clearly and specifically defined.

[0060] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0061] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A PCS and busbar integration cabinet for container energy storage, characterized in that, The PCS and busbar integration cabinet for container energy storage includes a cabinet body and a cabinet door; multiple PCS devices and multiple busbar devices are arranged in the cabinet body; a PCS device interface and a busbar device interface are also arranged on the cabinet body; the PCS device interface is used for connecting the PCS device to the battery side, and the busbar device interface is used for connecting the busbar device to the load side and the grid side.

2. The PCS and busbar integration cabinet for container energy storage according to claim 1, characterized in that, The cabinet body includes multiple areas formed by being isolated by multiple cabinet boards, and the multiple areas include a power distribution cabinet area, a standard module area, a main control area, a busbar input / output area, and a protection circuit area; The power distribution cabinet area, the standard module area, and the main control area respectively load multiple of the PCS devices; the busbar input / output area loads the multiple busbar devices; Among them, each PCS device is electrically connected to each other, each PCS device is electrically connected to each busbar device, and each busbar device is electrically connected to each other.

3. The PCS and busbar integration cabinet for container energy storage according to claim 2, characterized in that, The multiple areas are divided according to the circuit connection relationship among the multiple PCS devices, between the PCS device and the busbar device, and among the busbar devices, as well as the device sizes of the multiple PCS devices and the multiple busbar devices.

4. The integrated cabinet of PCS and busbar connection for container energy storage according to claim 2, characterized in that The power distribution cabinet area includes an electric energy meter, a lightning arrester, an energy management module, a terminal block, and an air switch; The main control area includes multiple main control boxes and limit switches; The standard module area includes at least one energy storage inverter module, multiple DC-DC power supplies, and multiple photovoltaic input modules; The busbar input / output area includes at least one PCS DC side busbar, at least one PCS AC side busbar, a DCDC input busbar, and a DCDC output busbar; The protection circuit includes an ammeter transformer and a circuit breaker.

5. The integrated cabinet of PCS and busbar connection for container energy storage according to claim 4, wherein The power distribution cabinet area also includes a UPS host and a UPS battery pack, and a socket; the UPS host and the UPS battery pack are used to provide backup power for the PCS and busbar integration cabinet for container energy storage when the cabinet is powered off.

6. The integrated cabinet of PCS and busbar integration for container energy storage according to claim 4, characterized in that, The cabinet body includes an opening at the back and an opening at the front; the power distribution cabinet area, the standard module area, and the main control area are arranged at the opening at the front; the busbar input / output area and the protection circuit area are arranged at the opening at the back.

7. The integrated cabinet of PCS and busbar integration for container energy storage according to claim 6, characterized in that, A front cabinet door is arranged at the opening at the front, and a back cabinet door is arranged at the opening at the back; an operation screen, an indicator light, an air inlet, and an air outlet are arranged on the front cabinet door and / or the back cabinet door; The operation screen is connected to at least one main control box in the main control area and is used to control multiple PCS devices and multiple busbar devices in the PCS and busbar integration cabinet for container energy storage; The indicator light is used to indicate the status information of the multiple PCS devices and the multiple busbar devices; The air inlet and the air outlet are used for the PCS and busbar integration cabinet for container energy storage.

8. The integrated cabinet of PCS and busbar connection for container energy storage according to claim 7, wherein, A temperature and humidity measurement device and a heat dissipation device are also arranged in the cabinet body; The temperature and humidity measurement device is used to measure the temperature and humidity in the cabinet body and send the temperature and humidity information to at least one main control box in the main control area, and the main control box sends the temperature and humidity information to the operation screen; The heat dissipation device is used for dissipating heat from the cabinet body.

9. The integrated cabinet of PCS and busbar for container energy storage according to claim 7, characterized in that, A hidden forklift position is further provided at the bottom of the cabinet body.

10. A container energy storage system, characterized in that, The container energy storage system includes: a PCS and a busbar integration cabinet for container energy storage as described in any one of claims 1-9.

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