High-capacity ac-dc integrated mobile energy storage cabin

Abstract

The application belongs to the technical field of energy storage, and specifically discloses a high-capacity AC / DC integrated mobile energy storage cabin, wherein a battery pack with a relatively large weight is arranged at the bottom of the cabin body, and a fusion-type PCS device is arranged at the top of the cabin body; the height of the overall cabin gravity center is significantly reduced compared with the conventional scheme of layering and placing the battery pack on top, thereby effectively reducing the overturning risk in the transportation process, improving the stability and safety of mobile transportation, fully utilizing the space in the height direction of the cabin body, significantly improving the single-cabin capacity and energy density, using the open space at the top and good air convection conditions for air cooling, greatly improving the heat dissipation performance of the fusion-type PCS, avoiding the thermal influence of the heat of the fusion-type PCS on the battery pack, and the heat dissipation effect is better than that of the conventional scheme of arranging the fusion-type PCS in the enclosed space in the cabin or mixing the arrangement of the fusion-type PCS and the battery, thereby improving the operation efficiency and long-term reliability of the fusion-type PCS.

Description

Technical Field

[0001] This invention belongs to the field of energy storage technology, and specifically discloses a high-capacity AC / DC integrated mobile energy storage cabin. Background Technology

[0002] An AC / DC integrated energy storage system is an energy storage solution that highly integrates a power conversion system (PCS), battery system, cooling system, fire protection system, battery management system (BMS), energy management system (EMS), and auxiliary equipment into a prefabricated enclosure. Compared to traditional split-type energy storage systems, the AC / DC integrated solution has advantages such as small size, simple installation and commissioning, and high system efficiency, and has become an important development direction in the field of electrochemical energy storage.

[0003] Currently, most common AC / DC integrated energy storage modules use standard 20ft or 40ft customized shipping containers as their carrier. Taking a 20ft containerized energy storage module as an example, it typically houses 10 battery clusters, and its practical applications suffer from the following problems and drawbacks: First, the internal space utilization is low, the center of gravity layout is unreasonable, and the heat dissipation performance is poor. In existing technologies, battery packs are usually arranged in layers on battery racks, with PCS equipment arranged side by side with the battery system or placed at both ends of the cabin, failing to fully utilize the space in the height direction of the cabin. This layout results in the battery pack being positioned high, and the overall center of gravity of the cabin being high, reducing stability during transportation and movement; at the same time, the PCS equipment generates a lot of heat during operation, and if the ventilation and heat dissipation conditions at the placement location are poor, it will affect the operating efficiency and long-term reliability of the PCS. Second, the single-compartment capacity of a standard 20ft container energy storage module is limited. A typical 20ft energy storage module can only accommodate about 10 battery clusters, and the total capacity is insufficient to meet the ever-increasing demand for large capacity. It cannot achieve higher energy density within a limited space, thus limiting the power supply capacity and project economics in mobile energy storage scenarios. Third, the external electrical access method is inconvenient and cannot meet the needs of rapid deployment. The existing energy storage compartments are connected to the mains power distribution cabinet using fixed wiring terminals. On-site wiring operations are cumbersome and time-consuming, and cannot achieve rapid connection. This makes it difficult to meet the needs of application scenarios that require rapid response, such as emergency power supply and temporary power backup. Fourth, the structural strength of the hull is insufficient, making it difficult to adapt to long-term mobile transportation conditions. The existing energy storage hull structure design mainly meets the requirements of static installation or short-distance transportation. Under the alternating loads and vibration impacts of long-term road transportation, the hull and internal equipment are prone to fatigue damage and loosening, affecting the reliability and service life of the system. Summary of the Invention

[0004] To address the problems in the background art, this invention discloses a high-capacity AC / DC integrated mobile energy storage compartment with a vertically layered layout. The battery pack is located at the bottom of the compartment, and the PCS is located at the upper part of the compartment, achieving a higher single-compartment capacity within a standard 20ft container. By configuring quick-connect connectors and a reinforced compartment structure, it enables rapid access and long-term mobile transportation.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A high-capacity AC / DC integrated mobile energy storage cabin includes a container-structured cabin. An energy storage system comprising twelve battery clusters is located at the bottom of the cabin. A fusion-type energy storage converter, corresponding to each battery cluster, is located on the upper part of the cabin. The positive and negative input terminals of the fusion-type energy storage converter's DC side are connected to the positive and negative terminals of the corresponding battery clusters via DC cables. The AC output terminals of the fusion-type energy storage converter are connected in parallel to an AC interface module via AC cables. The AC interface module is connected to a mains power distribution cabinet via quick-connect connectors and external cables. A control system, including a battery management system and an energy management system, is also located within the cabin. The signal sampling terminals of the battery management system and the battery clusters are connected via a C-type connector. The system uses AN bus or daisy-chain communication to collect real-time data on voltage, current, temperature, and state of charge (SOC) parameters of each battery cluster. The energy management system communicates with the battery management system via RS485, CAN, or Ethernet. Based on the SOC status parameters and externally input target power commands, the energy management system sends charging and discharging control commands to the integrated energy storage converter. In discharging mode, the integrated energy storage converter converts the DC power of the corresponding battery cluster into 400V AC power, which is then output to the mains power distribution cabinet via the AC interface module to power the load. In charging mode, external AC power is converted into DC power by each integrated energy storage converter to charge the corresponding battery cluster.

[0006] Furthermore, the high-capacity AC / DC integrated mobile energy storage cabin includes five 1P52S 314Ah lithium iron phosphate battery packs connected in series in each battery cluster. The five battery packs in the same battery cluster are arranged in a line along the vertical direction of the cabin or in a line along the horizontal direction of the cabin. The battery packs are fixedly installed on the upper surface of the load-bearing beam at the bottom of the cabin by battery brackets.

[0007] Furthermore, the high-capacity AC / DC integrated mobile energy storage compartment is equipped with a liquid cooling system inside the compartment. Liquid cooling plates are respectively installed at the bottom of the battery pack. The liquid cooling plates are connected to the liquid cooling system through liquid cooling pipes. Coolant circulates between the liquid cooling plates and the liquid cooling unit to cool the battery pack.

[0008] Furthermore, in the high-capacity AC / DC integrated mobile energy storage cabin, the integrated energy storage converter is fixedly installed on the mounting bracket in the top area of ​​the cabin. The mounting bracket is fixedly connected to the side wall or top plate of the cabin through connectors. The integrated energy storage converter is equipped with a cooling fan and a radiator. Ventilation louvers or forced ventilation devices are provided on the top of the cabin corresponding to the installation position of the integrated energy storage converter.

[0009] Furthermore, the high-capacity AC / DC integrated mobile energy storage cabin is provided with reinforced load-bearing beams and reinforcing ribs at the bottom of the cabin, and reinforced structural components are provided on the side walls and top of the cabin.

[0010] Furthermore, the high-capacity AC / DC integrated mobile energy storage cabin is equipped with a fire protection system inside the cabin. The fire protection system includes detectors and fire extinguishing devices. The detectors are used to collect temperature parameters inside the cabin in real time. The information output terminal of the detectors is connected to the battery management system for communication. The battery management system sends the activation and deactivation signal of the fire extinguishing device to the control terminal of the fire extinguishing device according to the received temperature parameters inside the cabin. The detectors are temperature sensors, and the fire extinguishing devices adopt perfluorohexanone or aerosol automatic fire extinguishing devices.

[0011] Furthermore, the high-capacity AC / DC integrated mobile energy storage compartment is equipped with a combiner cabinet inside the compartment, which is responsible for collecting the AC power output from the integrated energy storage converter to the main bus and completing electrical protection and distribution.

[0012] Furthermore, the high-capacity AC / DC integrated mobile energy storage compartment is equipped with lighting equipment and a power distribution box inside the compartment. The power distribution box is used to supply power to the lighting equipment, control circuits, cooling fans, and radiators inside the compartment.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes an innovative vertical layered layout, placing the heavier battery pack at the bottom of the compartment and the integrated PCS equipment at the top, to fully leverage the space in the vertical direction of the compartment. This significantly improves the capacity and energy density of a single compartment, achieving the arrangement of 12 battery clusters within a standard 20ft container, with a total capacity of 1.5MW / 3.13MWh. This is 2 more clusters than the conventional 10-cluster configuration of a 20ft energy storage compartment, increasing the capacity of a single compartment by approximately 20%. 2. In this invention, the battery pack, which accounts for more than 70% of the total weight of the cabin, is placed at the bottom of the cabin, while lighter equipment such as the integrated PCS is placed at the top. The center of gravity of the entire cabin is significantly lower than that of the conventional solution of placing the battery pack in layers on top, which effectively reduces the risk of tipping over during transportation and improves the stability and safety of mobile transportation. 3. The present invention independently sets up the heat-generating fusion PCS device in the top area of ​​the cabin, and uses the open space at the top and good air convection conditions for air cooling. The heat dissipation performance of the fusion PCS is greatly improved, avoiding the thermal impact of the heat of the fusion PCS on the battery pack. Moreover, the heat dissipation effect is better than the conventional solution of placing the fusion PCS in the closed space inside the cabin or mixing it with the battery, thus improving the operating efficiency and long-term reliability of the fusion PCS. 4. This invention is equipped with a 400V quick-connect connector on the AC side. Through the quick-connect structure of male and female connectors, the electrical connection and disconnection between the energy storage compartment and the mains power distribution cabinet can be achieved without tools. The on-site access time is shortened from several hours to several minutes, greatly improving the rapid deployment capability and the rapid response capability in scenarios such as emergency power supply and temporary power supply. 5. This invention provides targeted structural reinforcement for the standard 20ft container cabin, with reinforced load-bearing beams and stiffeners at the bottom, and reinforced components on the side walls and top. This enables the cabin to withstand alternating loads and vibration impacts during long-term road transportation, ensuring the installation accuracy and operational reliability of internal equipment, meeting the requirements for long-term mobile transportation, and expanding the application range of energy storage cabins. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a front structural schematic diagram of the high-capacity AC / DC integrated mobile energy storage compartment of the present invention; Figure 2 This is a schematic diagram of the rear structure of the high-capacity AC / DC integrated mobile energy storage compartment of the present invention; In the above diagram: 01-First battery cluster; 02-Second battery cluster; 03-Third battery cluster; 04-Fourth battery cluster; 05-Fifth battery cluster; 06-Sixth battery cluster; 07-Seventh battery cluster; 08-Eighth battery cluster; 09-Ninth battery cluster; 010-Tenth battery cluster; 011-Eleventh battery cluster; 012-Twelfth battery cluster; 1-First integrated energy storage converter; 2-Second integrated energy storage converter; 3-Third integrated energy storage converter; 4-Fourth integrated energy storage converter. 5-Fifth integrated energy storage converter; 6-Sixth integrated energy storage converter; 7-Seventh integrated energy storage converter; 8-Eighth integrated energy storage converter; 9-Ninth integrated energy storage converter; 10-Tenth integrated energy storage converter; 11-Eleventh integrated energy storage converter; 12-Twelfth integrated energy storage converter; 13-Combiner cabinet; 14-Input / output terminals; 15-Bus; 16-Liquid cooling system; 17-Distribution box; 18-Fire protection system. Detailed Implementation

[0016] To better understand the present invention, the following embodiments further illustrate the content of the invention, but the scope of protection of the present invention is not limited to the following embodiments. Numerous specific details are set forth in the following description to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details.

[0017] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0020] Combined with appendix Figure 1-2This invention details a high-capacity AC / DC integrated mobile energy storage module, comprising a container-structured module 15. Taking a 20ft containerized energy storage module as an example, the module adopts a standard 20ft container structure with external dimensions of 6058mm (length) × 2438mm (width) × 2896mm (height). An energy storage system is installed at the bottom of the module 15, comprising twelve battery clusters, two more than the ten clusters in a conventional 20ft energy storage module. The twelve battery clusters are designated as first battery cluster 01, second battery cluster 02, third battery cluster 03, fourth battery cluster 04, fifth battery cluster 05, sixth battery cluster 06, seventh battery cluster 07, eighth battery cluster 08, ninth battery cluster 09, tenth battery cluster 010, eleventh battery cluster 011, and twelfth battery cluster 012. A fusion-type energy storage unit corresponding to the battery clusters is installed on the upper part of the module 15. Each battery cluster is independently equipped with a fusion-type energy storage converter (PCS) to achieve independent charge and discharge management, voltage conversion, and grid connection control for each cluster, ensuring system operational flexibility and fault isolation capabilities. The fusion-type energy storage converters are: First Fusion-Type Energy Storage Converter 1, Second Fusion-Type Energy Storage Converter 2, Third Fusion-Type Energy Storage Converter 3, Fourth Fusion-Type Energy Storage Converter 4, Fifth Fusion-Type Energy Storage Converter 5, Sixth Fusion-Type Energy Storage Converter 6, Seventh Fusion-Type Energy Storage Converter 7, Eighth Fusion-Type Energy Storage Converter 8, Ninth Fusion-Type Energy Storage Converter 9, Tenth Fusion-Type Energy Storage Converter 10, Eleventh Fusion-Type Energy Storage Converter 11, and Twelfth Fusion-Type Energy Storage Converter 12. The rated power of a single fusion-type energy storage converter is 125kW. Since 12 PCS correspond to 12 battery clusters, the total system power is 1.5MW (125kW × 12 = The positive and negative input terminals of the integrated energy storage converter (1500kW) on the DC side are connected to the positive and negative terminals of the corresponding battery clusters via DC cables. The AC output terminals of the integrated energy storage converter are connected to the AC interface module via parallel AC cables. The AC interface module is connected to the mains distribution cabinet via quick-connect connectors and external cables. The AC interface module is located on the side wall of the cabin, preferably on one end of the side wall along the length of the cabin. It adopts a 400V three-phase four-wire AC system. The AC interface module includes quick-connect connectors for quick connection to the mains distribution cabinet. The quick-connect connectors include male and female parts. The male part is fixedly installed on the outside of the side wall of the cabin and electrically connected to the AC bus inside the cabin. The female part is connected to the end of the external cable, enabling quick electrical connection and disconnection between the energy storage cabin and the mains distribution cabinet without tools. A control system is also provided in the cabin 15. The control system includes a battery management system and an energy management system. The battery management system is connected to the signal sampling terminal of the battery clusters via CAN bus or daisy-chain communication to collect the voltage, current, temperature and load of each battery cluster in real time. The electrical state parameters, energy management system, and battery management system are connected via RS485, CAN, or Ethernet communication. Based on the state parameters of each battery cluster uploaded by the battery management system and the target power command input externally, the system issues charging and discharging control commands to the integrated energy storage converter. In discharging mode, the integrated energy storage converter converts the DC power of the corresponding battery cluster into 400V AC power, which is then output to the mains power distribution cabinet via the AC interface module to power the load. In charging mode, external AC power is converted into DC power by each integrated energy storage converter to charge the corresponding battery cluster. This invention places the battery pack in the bottom area of ​​the cabin, lowering the overall center of gravity and reducing the risk of tipping over during transportation, thus improving the stability of mobile transportation. Simultaneously, the bottom area has strong load-bearing capacity, suitable for installing heavy battery packs. The PCS is placed in the top area of ​​the cabin, utilizing the open space at the top to improve heat dissipation and prevent the heat generated by the PCS from affecting the bottom battery pack. It also forms a vertically layered layout with the bottom battery pack, improving the utilization rate of the cabin space.

[0021] As an optional design, the high-capacity AC / DC integrated mobile energy storage compartment is preferred. Each battery cluster includes five 1P52S 314Ah lithium iron phosphate battery packs connected in series. That is, each battery pack consists of 52 individual cells connected in series, each individual cell has a capacity of 314Ah, and the number of parallel connections is 1. The energy storage cabinet adopts a double-sided layout, with 6 battery packs arranged on the front and back sides respectively. The five battery packs of the second battery cluster 02, the third battery cluster 03, the fourth battery cluster 04, the fifth battery cluster 05, the sixth battery cluster 06, the eighth battery cluster 08, the ninth battery cluster 09, the tenth battery cluster 010, the eleventh battery cluster 011, and the twelfth battery cluster 012 are arranged in a line along the vertical direction of the compartment 15, and the five battery packs of the first battery cluster 01 and the seventh battery cluster 07 are arranged in a line along the horizontal direction of the compartment 15. The battery packs are fixedly installed on the upper surface of the load-bearing beam at the bottom of the compartment 15 by battery brackets.

[0022] As an optional design, the high-capacity AC / DC integrated mobile energy storage compartment is preferably equipped with a liquid cooling system 16 inside the compartment 15. Liquid cooling plates are respectively installed at the bottom of the battery pack. The liquid cooling plates are connected to the liquid cooling system 16 through liquid cooling pipes. The coolant circulates between the liquid cooling plates and the liquid cooling unit to cool the battery pack.

[0023] As an optional design, the high-capacity AC / DC integrated mobile energy storage compartment is preferred. The integrated energy storage converter is fixedly installed on the mounting bracket in the top area of ​​the compartment 15. The mounting bracket is fixedly connected to the side wall or top plate of the compartment 15 through connectors. The integrated energy storage converter is equipped with a cooling fan and a radiator. Ventilation louvers or forced exhaust devices are provided on the top of the compartment 15 corresponding to the installation position of the integrated energy storage converter. The heat dissipation efficiency of the PCS is improved by utilizing the open space at the top and good air convection conditions.

[0024] As an optional design, the high-capacity AC / DC integrated mobile energy storage cabin is preferred. It has a reinforced load-bearing beam and reinforcing ribs at the bottom of the cabin body 15, and reinforced structural components on the side walls and top of the cabin body 15. The internal space of the cabin is structurally reinforced so that the cabin can maintain good structural integrity and installation accuracy of internal equipment when subjected to alternating loads and vibration impacts during road transportation, and meet the mechanical strength requirements of long-term road transportation. Openable and closable maintenance doors are also provided at the front end and sides of the cabin body.

[0025] As an optional design, the high-capacity AC / DC integrated mobile energy storage compartment is preferably equipped with a fire suppression system 18 inside the compartment 15. The fire suppression system 18 includes detectors and fire extinguishing devices. The detectors are used to collect temperature parameters inside the compartment 15 in real time. The information output terminal of the detectors is connected to the battery management system for communication. The battery management system sends the activation and deactivation signals of the fire extinguishing device to the control terminal of the fire extinguishing device based on the received temperature parameters inside the compartment 15. The detectors are temperature sensors, and the fire extinguishing devices adopt perfluorohexanone or aerosol automatic fire extinguishing devices. Perfluorohexanone and aerosol automatic fire extinguishing devices are existing technologies. The fire suppression system 18 automatically responds in the early stage of thermal runaway to ensure the safety of the entire compartment.

[0026] As an optional design, the high-capacity AC / DC integrated mobile energy storage cabin is preferred. Inside the cabin body 15, there is a combiner cabinet 13 and an input / output terminal 14. The combiner cabinet 13 is responsible for collecting the AC power output from the integrated energy storage converter to the main bus and completing electrical protection and distribution. The input / output terminal 14 serves as the interface between the energy storage system and the external power grid or load, realizing bidirectional energy transmission.

[0027] As an optional design, the high-capacity AC / DC integrated mobile energy storage compartment is preferred, with lighting equipment and a power distribution box 17 installed inside the compartment 15. The power distribution box 17 is used to supply power to auxiliary equipment such as lighting equipment, control circuits, cooling fans, and radiators inside the compartment.

[0028] The connection relationships and working principles between the various components of this invention are as follows: Electrical connection: The positive and negative terminals of each battery cluster are connected to the positive and negative DC input terminals of the corresponding PCS via DC cables; the AC output terminals of each PCS are connected in parallel via AC cables to the AC interface module; the AC interface module is connected to the mains power distribution cabinet via quick-connect connectors and external cables, thereby realizing the electrical path of battery cluster → PCS → AC interface module → mains power distribution cabinet. Control signal connection relationship: The voltage, current and temperature sensor signal lines of each battery cluster are connected to the corresponding sampling port of the BMS; the BMS is connected to the EMS through the communication bus; the EMS is connected to the communication port of each PCS through the communication bus, forming a control loop of "battery cluster status acquisition → BMS → EMS → PCS". Working process: In discharge mode, the EMS sends instructions to each PCS according to the external dispatch instructions. Each PCS converts the DC power of the corresponding battery cluster into 400V AC power. After the current is combined, it is output to the mains power distribution cabinet through the AC interface module to power the load. In charging mode, the external AC power is converted into DC power by each PCS to charge the corresponding battery cluster. With the above layout scheme, the total capacity of the energy storage compartment of the present invention reaches 1.5MW / 3.13MWh in a standard 20ft container, which is two more battery clusters than the conventional 20ft energy storage compartment, significantly improving the single compartment capacity and energy density.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A high-capacity AC / DC integrated mobile energy storage module, characterized in that: The container includes a container-structured hull with an energy storage system at its bottom. This system comprises twelve battery clusters. At the top of the hull are integrated energy storage converters corresponding to each battery cluster. The positive and negative input terminals of the integrated energy storage converter's DC side are connected to the positive and negative terminals of the corresponding battery clusters via DC cables. The AC output terminals of the integrated energy storage converter are connected in parallel to an AC interface module via AC cables. The AC interface module is connected to the mains power distribution cabinet via quick-connect connectors and external cables. A control system is also located within the hull, comprising a battery management system and an energy management system. The battery management system communicates with the signal sampling terminals of the battery clusters via a CAN bus or daisy-chain. The system uses a communication connection to collect real-time data on the voltage, current, temperature, and state of charge (SOC) parameters of each battery cluster. The energy management system communicates with the battery management system via RS485, CAN, or Ethernet. Based on the SOC status parameters uploaded by the battery management system and the target power command input from the outside, the system sends charging and discharging control commands to the integrated energy storage converter. In discharging mode, the integrated energy storage converter converts the DC power of the corresponding battery cluster into 400V AC power, which is then output to the mains power distribution cabinet via the AC interface module to power the load. In charging mode, the external AC power is converted into DC power by each integrated energy storage converter to charge the corresponding battery cluster.

2. The high-capacity AC / DC integrated mobile energy storage module according to claim 1, characterized in that: Each battery cluster comprises five 1P52S 314Ah lithium iron phosphate battery packs connected in series. The five battery packs of the same battery cluster are arranged in a line along the vertical direction of the cabin or in a line along the horizontal direction of the cabin. The battery packs are fixedly installed on the upper surface of the load-bearing beam at the bottom of the cabin by battery brackets.

3. The high-capacity AC / DC integrated mobile energy storage module according to claim 2, characterized in that: in The compartment is equipped with a liquid cooling system. Liquid cooling plates are installed at the bottom of the battery pack. The liquid cooling plates are connected to the liquid cooling system through liquid cooling pipes. Coolant circulates between the liquid cooling plates and the liquid cooling unit to cool the battery pack.

4. The high-capacity AC / DC integrated mobile energy storage module according to claim 3, characterized in that: The integrated energy storage converter is fixedly installed on the mounting bracket in the top area of ​​the cabin. The mounting bracket is fixedly connected to the side wall or top plate of the cabin through connectors. The integrated energy storage converter is equipped with a cooling fan and a radiator. Ventilation louvers or forced ventilation devices are provided on the top of the cabin corresponding to the installation position of the integrated energy storage converter.

5. The high-capacity AC / DC integrated mobile energy storage module according to claim 3, characterized in that: The bottom of the cabin is equipped with reinforced load-bearing beams and reinforcing ribs, and the side walls and top of the cabin are equipped with reinforcing structural components.

6. The high-capacity AC / DC integrated mobile energy storage module according to claim 3, characterized in that: in The cabin is equipped with a fire protection system, which includes detectors and fire extinguishing devices. The detectors are used to collect temperature parameters inside the cabin in real time. The information output terminal of the detectors is connected to the battery management system. The battery management system sends the activation and deactivation signals of the fire extinguishing devices to the control terminal of the fire extinguishing devices based on the received temperature parameters inside the cabin. The detectors are temperature sensors, and the fire extinguishing devices are perfluorohexanone or aerosol automatic fire extinguishing devices.

7. The high-capacity AC / DC integrated mobile energy storage module according to claim 3, characterized in that: in The cabin is equipped with a combiner cabinet, which is responsible for collecting the AC power output from the integrated energy storage converter to the main bus and completing electrical protection and distribution.

8. The high-capacity AC / DC integrated mobile energy storage module according to claim 3, characterized in that: The cabinet is equipped with lighting equipment and a power distribution box, which supplies power to the lighting equipment, control circuits, cooling fans, and radiators inside the cabinet.

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