Energy storage system

Abstract

Provided in the embodiments of the present application is an energy storage system. The energy storage system comprises a first compartment, a first battery device, a second compartment, a second battery device, and a control module. The first compartment accommodates the first battery device, and the second compartment body accommodates the second battery device. The first compartment body and the second compartment body are stacked in the height direction, the dimension of the first compartment body in the height direction and the dimension of the second compartment body in the height direction being both less than the dimension of a standard container in the height direction. The control module is used for electrically controlling the first battery device and the second battery device. The first compartment body comprises a first sub-compartment and a second sub-compartment, the first sub-compartment and the second sub-compartment being arranged in the length direction of the first compartment body. The first battery device is accommodated in the first sub-compartment, and the control module is accommodated in the second sub-compartment. Such an energy storage system reduces the space waste of the first compartment and the second compartment in the height direction and reduces the space occupation of the control module in the height direction, thereby improving the volumetric energy density of energy storage systems.

Description

Energy storage system Cross-reference to related applications

[0001] This application claims international patent application PCT / CN2024 / 114575, filed July 9, 2024, entitled "Container, Energy Storage Device, Energy Storage Equipment, Energy Storage System and Charging Network"; international patent application PCT / CN2024 / 112558, filed August 15, 2024, entitled "Energy Storage Device, Energy Storage System and Charging Network"; Chinese patent application PCT / CN202421984591.6, filed August 15, 2024, entitled "Container, Energy Storage Device, Energy Storage System and Charging Network"; international patent application PCT / CN2024 / 112498, filed August 15, 2024, entitled "Energy Storage Device, Energy Storage System and Charging Network"; and Chinese patent application PCT / CN2024 / 112498, filed October 24, 2024, entitled "Energy Storage Device, Energy Storage System and Charging Network". The priority of the following international patent applications filed on December 31, 2024, entitled "Energy Storage System" (PCT / CN2024 / 127187), Chinese patent applications filed on April 16, 2025, entitled "Energy Storage System" (PCT / CN2024 / 144344), Chinese patent applications filed on April 16, 2025, entitled "Energy Storage System" (202520714779.7), Chinese patent applications filed on April 16, 2025, entitled "Energy Storage System" (202520714780.X), Chinese patent applications filed on April 16, 2025, entitled "Energy Storage System" (202520714781.4), and Chinese patent applications filed on April 16, 2025, entitled "Energy Storage System" (202520716960.1), the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and more specifically, to an energy storage system. Background Technology

[0003] With the rapid development of technology, electricity has become an indispensable energy source in people's production and daily life. To improve the smoothness of electricity supply and ensure the normal operation of production and daily life, energy storage systems are needed. Energy storage systems can achieve the cyclical storage and release of electrical energy. By charging or discharging the battery devices in the energy storage system, electrical energy can be stored in the system or supplied to electrical devices. Energy storage systems are widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation, and energy storage power stations.

[0004] In the development of energy storage systems, besides improving their performance, increasing their volumetric energy density is also a crucial issue. Therefore, improving the volumetric energy density of energy storage systems is a continuous technical challenge in energy storage technology. Summary of the Invention

[0005] This application provides an energy storage system that can improve the volumetric energy density of the energy storage system.

[0006] This application provides an energy storage system, including a first compartment, a first battery device, a second compartment, a second battery device, and a control module. The first compartment houses the first battery device; the second compartment houses the second battery device. The first and second compartments are stacked along the height direction, and the dimensions of both the first and second compartments along the height direction are smaller than the dimensions of a standard shipping container along the height direction. The control module is used to electrically control the first and second battery devices. The first compartment includes a first sub-compartment and a second sub-compartment. The first compartment has a first isolation layer that separates the first and second sub-compartments. The first and second sub-compartments are arranged along the length of the first compartment. The first battery device is housed in the first sub-compartment, and the control module is housed in the second sub-compartment.

[0007] In the above technical solution, by setting the first and second compartments to be stacked along the height direction, and the dimensions of the first and second compartments along the height direction are both smaller than the dimensions of a standard container along the height direction, the height of the first and second compartments can be reduced, thereby reducing their volume. The height of the first and second compartments can be adjusted according to the space occupied by the first battery device in the first compartment and the second battery device in the second compartment, reducing the wasted space along the height direction of the first and second compartments. Furthermore, the control module is housed in the second sub-compartment, so that the control module and the first battery device are arranged along the length direction of the first compartment, reducing the space occupied by the control module along the height direction, thereby reducing the overall height of the energy storage system, and thus reducing the volume of the energy storage system and increasing the volumetric energy density of the energy storage system.

[0008] In some embodiments, the energy storage system includes a first sub-control module and a second sub-control module. The first sub-control module is communicatively connected to a control module and a battery monitoring unit of a plurality of first battery devices. The second sub-control module is communicatively connected to the control module and a battery monitoring unit of a plurality of second battery devices. At least one of the first and second sub-control modules is housed in a second sub-compartment. By housing at least one of the first and second sub-control modules in the second sub-compartment, the first and second sub-control modules are positioned on one side of the first battery devices along the length of the first compartment, thereby reducing the height of the first and second sub-control modules relative to the energy storage system and further improving the volumetric energy density of the energy storage system.

[0009] In some embodiments, the first sub-control module is housed in the second sub-compartment. The first sub-control module and the control module are arranged along the width direction of the first compartment. By accommodating the first sub-control module in the second sub-compartment, on the one hand, the space occupied by the first sub-control module in the height direction of the first compartment can be reduced, thereby increasing the volumetric energy density of the first compartment; on the other hand, the first sub-control module can be positioned close to the first battery device, thereby reducing the wiring difficulty of the first sub-control module and the battery monitoring unit of the first battery device. Furthermore, the arrangement of the first sub-control module and the control module along the width direction of the first compartment can reduce the space occupied by the first sub-control module and the control module in the height direction within the second sub-compartment, which is beneficial for reducing the height of the first compartment and increasing the volumetric energy density of the first compartment.

[0010] In some embodiments, the first sub-control module is housed in a second sub-compartment, and a first inspection door is provided on the side of the second sub-compartment opposite to the first sub-compartment, corresponding to the area of ​​the first sub-control module. This allows for inspection of the first sub-control module through the first inspection door, reducing the difficulty and cost of its maintenance.

[0011] In some embodiments, along the length of the first compartment, a first inspection door is provided on the side of the second sub-compartment opposite to the first sub-compartment, corresponding to the area of ​​the first sub-control module. The second sub-compartment is provided with a first guide rail, and the first sub-control module is movably mounted on the first guide rail along the length of the first compartment. This allows both the first sub-control module and the power distribution module to be inspected through the first inspection door, reducing the difficulty of inspecting the first sub-control module.

[0012] In some embodiments, the second compartment includes a third sub-compartment and a fourth sub-compartment. The second compartment has a second isolation layer that separates the third and fourth sub-compartments. The third and fourth sub-compartments are arranged along the length of the first compartment. One of the first and second sub-control modules is housed in the second sub-compartment, and the other is housed in the fourth sub-compartment. By housing one of the first and second sub-control modules in the second sub-compartment and the other in the fourth sub-compartment, the first and second sub-control modules can be arranged along the length of the first compartment with the first and second battery devices. This reduces the space occupied by the first and second sub-control modules in the height direction of the first and second compartments, thereby further reducing the height of the energy storage system and increasing the volumetric energy density of the energy storage system.

[0013] In some embodiments, the first sub-control module is housed in the second sub-compartment, and the second sub-control module is housed in the fourth sub-compartment. A second maintenance door is provided in the area of ​​the fourth sub-compartment opposite to the third sub-compartment, corresponding to the second sub-control module. Maintenance of the second sub-control module is achieved through the second maintenance door, reducing the difficulty and cost of maintenance.

[0014] In some embodiments, a second guide rail is provided inside the fourth sub-compartment, and the second sub-control module is movably mounted on the second guide rail along the length of the first compartment. This allows the second sub-control module to be moved out of or into the fourth sub-compartment via the second guide rail, reducing the maintenance difficulty of the second sub-control module.

[0015] In some embodiments, multiple second sub-control modules are arranged along the height direction. This makes the inspection and maintenance of the second sub-control modules more convenient and reduces the difficulty of maintenance.

[0016] In some embodiments, the energy storage system further includes a power distribution module and a fire control module. The fire control module, the first sub-control module, the second sub-control module, and the control module are all electrically connected to the power distribution module, and both the fire control module and the power distribution module are housed in a second sub-compartment. By housing both the fire control module and the power distribution module in the second sub-compartment, the space occupied by the fire control module and the power distribution module along the height of the energy storage system can be reduced, thereby allowing the energy storage system to be set at a smaller height and thus increasing the volumetric energy density of the energy storage system.

[0017] In some embodiments, the first sub-control module is housed within the second sub-compartment, and the power distribution module and the first sub-control module are arranged along the width direction of the first compartment. By arranging the power distribution module and the first sub-control module along the width direction of the first compartment, the space occupied by the power distribution module and the first sub-control module in the height direction of the first compartment can be reduced, thereby facilitating the design of a smaller first compartment and increasing the volumetric energy density of the first compartment.

[0018] In some embodiments, the second sub-compartment contains multiple first sub-control modules, which are arranged along the height direction. This reduces the risk of interference between the first sub-control modules and the control modules, and also reduces the maintenance difficulty of the first sub-control modules.

[0019] In some embodiments, the second sub-compartment is provided with a third inspection door, which is located on the side of the power distribution module opposite to the first sub-control module along the width direction of the first compartment. This allows for inspection and maintenance of the power distribution module through the third inspection door, reducing the difficulty and cost of its maintenance.

[0020] In some embodiments, the fire control module is located on the third access door. This allows for maintenance of both the fire control module and the power distribution module when the third access door is open, reducing the difficulty of maintenance. Furthermore, it facilitates the installation of the fire control module and simplifies its layout.

[0021] In some embodiments, a fourth inspection door is provided in the area corresponding to the power distribution module on the side of the second sub-compartment opposite to the first sub-compartment. This allows the power distribution module to be inspected through the fourth inspection door, reducing the difficulty of maintenance.

[0022] In some embodiments, the fire control module, power distribution module, and control module are all located on the same side of the first sub-control module along the width direction of the first compartment. This reduces the space occupied by the fire control module, power distribution module, and control module along the width direction of the first compartment, making the layout of the second sub-compartment more compact and improving the space utilization rate of the second sub-compartment.

[0023] In some embodiments, the fire control module is located above the power distribution module. This keeps the power distribution module relatively low, which is beneficial for its maintenance.

[0024] In some embodiments, the control module is located above the power distribution module. This facilitates the operation of the control module and allows for a more compact layout of the control module and power distribution module in the second sub-compartment.

[0025] In some embodiments, the energy storage system includes a first sub-control module and a first converter. A first compartment houses multiple first battery clusters, each first battery cluster including multiple first battery devices connected in series. The first sub-control module includes a first control section and a second control section. The first converter is electrically connected to at least one first battery cluster. The first control section is used to electrically connect the first converter, and the second control section is communicatively connected to the control module and a battery monitoring unit of the multiple first battery devices. The energy storage system also includes a second sub-control module and a second converter. A second compartment houses multiple second battery clusters, each second battery cluster including multiple second battery devices connected in series. The second sub-control module includes a third control section and a fourth control section. The second converter is electrically connected to at least one second battery cluster. The third control section is used to electrically connect the second converter, and the fourth control section is communicatively connected to the control module and a battery monitoring unit of the multiple second battery devices. By electrically connecting the first battery clusters to the first converter, the first converter can input or output electrical energy from the first battery clusters, enabling the multiple first battery clusters to be connected to electrical equipment or the power grid respectively, thus improving the performance of the first compartment. The second battery cluster is electrically connected to the second converter, which enables the input or output of electrical energy from the second battery cluster. This allows multiple second battery clusters to be connected to electrical equipment or the power grid, thereby improving the performance of the second battery compartment.

[0026] In some embodiments, the energy storage system further includes a first bus terminal electrically connected to a first inverter and a first control unit, wherein the first inverter is located outside the first and second compartments, and the first bus terminal is housed within a second sub-compartment; and / or, the energy storage system further includes a second bus terminal electrically connected to a second inverter and a third control unit, wherein the second inverter is located outside the first and second compartments, and the second bus terminal is housed within a second sub-compartment. Thus, one first sub-control module corresponds to at least one battery cluster, and one second sub-control module corresponds to at least one second battery cluster, reducing the number of first and second sub-control modules required and reducing their spatial occupancy along the height of the energy storage system, thereby increasing the volumetric energy density of the energy storage system. By housing the first bus terminal within the second sub-compartment, the spatial occupancy of the first bus terminal along the height of the first compartment can be reduced, increasing the volumetric energy density of the first compartment. By accommodating both the first and second bus terminals within the second sub-compartment, on the one hand, the space occupied by the first and second bus terminals along the height direction of the energy storage system can be reduced, thereby increasing the volumetric energy density of the energy storage system; on the other hand, the wiring difficulty between the first and second bus terminals and the first and second converters can be reduced, thereby optimizing the layout of the energy storage system.

[0027] In some embodiments, the energy storage system further includes a power distribution module. A first sub-control module, a second sub-control module, and a control module are all electrically connected to the power distribution module. The power distribution module is housed in a second sub-compartment and located above the first and second bus terminals. By positioning the power distribution module above the first and second bus terminals, the first and second bus terminals can be led out of the second sub-compartment through the bottom of the sub-compartment, enabling wiring to the first and second converters. This reduces the wiring difficulty of the first and second bus terminals and lowers the risk of interference between the power distribution module and the first and second bus terminals.

[0028] In some embodiments, the energy storage system includes a first converter, which is integrated with a first sub-control module, and the first converter and the first sub-control module are located within a second sub-compartment; and / or, the energy storage system includes a second converter, which is integrated with a second sub-control module, and the second converter and the second sub-control module are located within a second sub-compartment. This reduces the space occupied by the first converter and the first sub-control module, and lowers the wiring complexity of the first converter and the first sub-control module. Similarly, it reduces the space occupied by the second converter and the second sub-control module, and lowers the wiring complexity of the second converter and the second sub-control module.

[0029] In some embodiments, each first sub-control module is electrically connected to a first battery cluster; each second sub-control module is electrically connected to a second battery cluster. This one-to-one correspondence between the first sub-control module and the first battery cluster reduces the risk of interference between multiple first battery clusters. Similarly, the one-to-one correspondence between the second sub-control module and the second battery cluster reduces the risk of interference between multiple second battery clusters.

[0030] In some embodiments, multiple first sub-control modules are arranged along the height direction, and multiple second sub-control modules are arranged along the height direction. This makes the layout of the first and second sub-control modules more compact and reduces the difficulty of their arrangement.

[0031] In some embodiments, a fuse is electrically connected between the first control unit and the first battery cluster; and / or, a fuse is electrically connected between the third control unit and the second battery cluster, the fuse being housed in a second sub-compartment. Thus, both the fuse and the control module are located within the second sub-compartment, facilitating centralized maintenance of both the fuse and the control module.

[0032] In some embodiments, the first compartment is located below the second compartment. This means the control module is located in the second sub-compartment, which is below the second compartment, resulting in a lower control module height. This facilitates the operation and maintenance of the control module, reducing its operational complexity and maintenance costs.

[0033] In some embodiments, the energy storage system further includes a thermal management module for managing the temperature of the first and second battery devices. The thermal management module is disposed on the top of the second compartment. This allows the thermal management module to manage the temperature of the first and second battery devices, reducing the complexity of temperature management for both devices. The top location of the thermal management module facilitates ventilation and heat dissipation, and it also shields at least a portion of both the second and first battery devices, thus mitigating the impact of sunlight and rain on them.

[0034] In some embodiments, the second compartment further includes a third sub-compartment and a fifth sub-compartment. The second compartment has a third isolation layer that separates the third and fifth sub-compartments. The fifth sub-compartment is located above the third sub-compartment. The second battery device is housed in the third sub-compartment, and the thermal management module is housed in the fifth sub-compartment. The third isolation layer separates the second battery device and the thermal management module, reducing the risk of interference between them. The fifth sub-compartment, located above the third sub-compartment, improves the heat dissipation of the thermal management module. Furthermore, the thermal management module can shield at least a portion of the second and first battery devices, which helps reduce the impact of sunlight and rain on the first and second battery devices.

[0035] In some embodiments, both the first compartment and the second compartment are provided with ladders on one side along the length or width of the first compartment. This allows the thermal management module to be inspected and maintained by climbing the ladders to the second compartment, reducing the maintenance cost of the thermal management module.

[0036] In some embodiments, the ladder is located on the side of the first compartment and the second compartment opposite to the second sub-compartment along the length of the first compartment. This reduces the risk of the ladder interfering with the maintenance of the control module.

[0037] In some embodiments, the thermal management module includes a heat dissipation module. The fifth sub-compartment includes a first sidewall and a first top wall disposed adjacent to each other. Along the height direction, the first top wall is located on the side of the third isolation layer opposite to the third sub-compartment. Both the first sidewall and the first top wall are provided with a first ventilation opening, which is used for ventilation of the heat dissipation module. By providing the first ventilation opening, the heat dissipation module can dissipate heat from the circumference of the thermal management module, thereby improving the temperature control effect of the thermal management module on the first battery device and the second battery device.

[0038] In some embodiments, the thermal management module includes a housing, and a heat dissipation module is disposed within the housing. The housing includes a second sidewall and a second top wall disposed adjacent to each other, and both the second sidewall and the top wall are provided with second vents. A first vent on the first sidewall communicates with a second vent on the second sidewall, and a first vent on the first top wall communicates with a second vent on the second top wall. Thus, the second vent in the housing and the first vent in the fifth sub-compartment are connected, allowing the thermal management module to dissipate heat through the first vents, thereby improving the heat dissipation effect of the heat dissipation module.

[0039] In some embodiments, the second sidewall is located on one side of the housing along the width direction of the first compartment. This way, the second vent on the second sidewall and the second sub-compartment face different orientations, reducing the risk of interference between the airflow from the second vent and the control module.

[0040] In some embodiments, the second vent on the second side wall includes an air inlet, and the second vent on the second top wall includes an air outlet. The heat dissipation module includes a fan and a condenser. Along the width direction of the first compartment, the condenser is disposed between the air inlet and the fan, and the fan is used to dissipate heat from the condenser. In this way, the fan can supply air to the condenser through the air inlet to reduce the temperature of the condenser and improve the condensation effect of the condenser.

[0041] In some embodiments, the dimension of the first compartment along the height direction is smaller than the dimension of the second compartment along the height direction. This allows the thermal management module to be disposed in the first compartment, while the second compartment can have a smaller dimension along the height direction, thereby increasing the volumetric energy density of the second compartment.

[0042] In some embodiments, both the first and second battery devices include multiple battery cells, each battery cell including a casing with a height of 200mm-230mm, and / or a length of 240mm-310mm, and / or a width of 60mm-85mm. All the first battery devices within the first compartment are arranged in 4-6 rows and 4 columns, with multiple first battery devices in each row arranged along the length of the first compartment and multiple first battery devices in each column arranged along the height. And / or, all the second battery devices within the second compartment are arranged in 4-6 rows and 4 columns, with multiple second battery devices in each row arranged along the length of the second compartment and multiple second battery devices in each column arranged along the height. This allows the first and second battery devices, including battery cells, to efficiently utilize the internal space of the first and second compartments in the height direction, while also enabling the energy storage system to possess higher energy density, provided that the first and second battery devices can be transported independently to meet the transportation requirements of the energy storage system. When the energy storage system is put into use, the first and second compartments are stacked vertically. Compared to a single standard container, this design allows the energy storage system to balance ease of transport with greater energy capacity.

[0043] In some embodiments, the dimensions of both the first and second compartments along the height direction are greater than or equal to one-third the dimensions of a standard shipping container along the height direction. This increases the internal space of the first and second compartments, allowing them to accommodate more first and second battery devices respectively, thereby improving the area energy density of the energy storage device.

[0044] In some embodiments, the dimensions of both the first and second compartments along the height direction are greater than or equal to half the dimensions of a standard shipping container along the height direction. This allows for a further increase in the internal space of the first and second compartments, enabling them to accommodate more first and second battery devices respectively, thereby further improving the area energy density of the energy storage device.

[0045] In some embodiments, the sum of the dimensions of the first and second compartments along the height direction is greater than or equal to the dimension of a standard shipping container along the height direction. This allows the first and second compartments to accommodate more first and second battery devices, which is beneficial for increasing the areal energy density of the energy storage device.

[0046] In some embodiments, the dimensions of both the first and second compartments along the height direction are greater than or equal to 805 mm and less than 2896 mm. When the dimensions of both the first and second compartments along the height direction are greater than or equal to 805 mm, the first and second compartments can accommodate more battery devices, increasing the volumetric energy density of the energy storage device. When the dimensions of both the first and second compartments along the height direction are less than 2896 mm, the dimensions of both the first and second compartments along the height direction are smaller than the dimensions of a standard container along the height direction, which helps to reduce the space occupied by the first and second compartments and increase their volumetric energy density. Therefore, when the dimensions of both the first and second compartments along the height direction are greater than or equal to 805 mm and less than 2896 mm, it is possible to balance accommodating more battery devices in the first and second compartments with reducing volume waste in the first and second compartments, thereby improving the volumetric energy density of the energy storage device.

[0047] In some embodiments, the dimensions of the first and second compartments along their length and width are identical to those of a standard shipping container. This ensures that the first and second compartments occupy space within the standard container during transport, minimizing wasted space. Furthermore, the identical dimensions along both the length and width of the first and second compartments facilitate stacking and increase their area energy density.

[0048] In some embodiments, the total weight of the first compartment and the components disposed within the first compartment is less than or equal to 36 tons. This facilitates the transportation of the first compartment and its internal components, reducing the difficulty of transporting the first compartment and the components disposed within it.

[0049] In some embodiments, the total weight of the second compartment and the components disposed within the second compartment is less than or equal to 36 tons. This facilitates the transportation of the second compartment and its internal components, reducing the difficulty of transporting the second compartment and the components disposed within it.

[0050] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0051] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0052] Figure 1 is a schematic diagram of the energy storage system provided in some embodiments of this application;

[0053] Figure 2 is an exploded view of a first or second battery device provided in some embodiments of this application;

[0054] Figure 3 is a schematic diagram of the framework of the control module, the first sub-control module, the second sub-control module, the first battery device, and the second battery device provided in some embodiments of this application.

[0055] Figure 4 is a schematic diagram of the structure of the second sub-compartment provided in some embodiments of this application;

[0056] Figure 5 is a structural schematic diagram of the first compartment provided in some embodiments of this application (showing the first access door);

[0057] Figure 6 is a structural schematic diagram of the second compartment provided in some embodiments of this application;

[0058] Figure 7 is a structural schematic diagram of the second sub-compartment provided in some embodiments of this application (showing the power distribution module);

[0059] Figure 8 is a structural schematic diagram of the first compartment provided in some embodiments of this application (showing the third access door);

[0060] Figure 9 is a schematic diagram of the structure of the second sub-compartment provided in some embodiments of this application (showing the first guide rail);

[0061] Figure 10 is a schematic diagram of the framework of the control module, the first sub-control module and the second sub-control module in the energy storage system provided in some embodiments of this application;

[0062] Figure 11 is a schematic diagram of the framework of the first converter, the second converter, the first sub-control module and the second sub-control module in the energy storage system provided in some embodiments of this application;

[0063] Figure 12 is a schematic diagram of the structure of the second sub-compartment provided in some embodiments of this application (showing the first bus terminal);

[0064] Figure 13 is a schematic diagram of the structure of the second sub-compartment provided in some embodiments of this application;

[0065] Figure 14 is a schematic diagram of the structure of the second sub-compartment provided in some embodiments of this application (showing the fuse);

[0066] Figure 15 is a structural schematic diagram of the second compartment provided in some embodiments of this application (showing the second sub-control module);

[0067] Figure 16 is a schematic diagram of the structure of an energy storage system provided in some embodiments of this application;

[0068] Figure 17 is a schematic diagram of the structure of an energy storage system provided in some embodiments of this application (showing a ladder);

[0069] Figure 18 is a schematic diagram of the structure of a thermal management module provided in some embodiments of this application;

[0070] Figure 19 is a schematic diagram of the arrangement of condensers and fans provided in some embodiments of this application;

[0071] Figure 20 is a schematic diagram of the structure of an energy storage system provided in some embodiments of this application (showing a first battery device and a second battery device);

[0072] Figure 21 is a schematic diagram of the structure of a battery cell provided in some embodiments of this application.

[0073] Marking Explanation: 1 - First Sub-compartment; 2 - Second Sub-compartment; 21 - First Compartment Wall; 22 - First Inspection Door; 23 - Third Inspection Door; 24 - First Guide Rail; 25 - Fourth Inspection Door; 3 - First Isolation Layer; 10 - First Compartment Body; 20 - First Battery Unit; 201 - First Battery Cluster; 2401 - Housing; 24011 - First Housing; 24012 - Second Housing; 2402 - Battery Cell; 24021 - Outer Shell; 24022 - Electrode Terminal; 30 - Second Compartment Body; 301 - Third Sub-compartment; 302 - Fourth Sub-compartment; 3021 - Second Inspection Door; 3022 - Second Guide Rail; 303 - Fifth Sub-compartment; 3031 - First Side Wall; 3032 - First Top Wall; 3033 - First Ventilation Opening; 304 - Second Isolation Layer; 305 - Third Isolation Layer; 306 - Ladder; 40 - Second Battery Unit; 401 - Second battery cluster; 50 - Control module; 60 - First sub-control module; 601 - First control section; 602 - Second control section; 70 - Second sub-control module; 701 - Third control section; 702 - Fourth control section; 80 - Power distribution module; 801 - Mounting base; 90 - Fire control module; 1001 - First converter; 1002 - First bus terminal; 1003 - Second converter; 1004 - Second bus terminal; 1005 - Fuse; 1006 - Thermal management module; 10061 - Heat dissipation module; 10062 - Condenser; 10063 - Fan; 10064 - Housing; 10065 - Second side wall; 10066 - Second top wall; 10067 - Second vent; 100 - Energy storage system; X - Length direction of the first compartment; Y - Width direction of the first compartment; Z - Height direction. Detailed Implementation

[0074] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0076] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0077] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0078] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces), unless otherwise explicitly specified.

[0079] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0080] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0081] In this application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0082] The battery device mentioned in the embodiments of this application may include a single physical module containing one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or mixed via a busbar.

[0083] In some embodiments, the battery device may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0084] In some embodiments, the battery device may be a battery pack, which includes a housing and individual battery cells, wherein the individual battery cells or battery modules are housed in the housing.

[0085] In some embodiments, the energy storage system includes energy storage containers, energy storage cabinets, etc.

[0086] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0087] Optionally, the electrode assembly has a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0088] Optionally, the electrode assembly has a stacked structure.

[0089] Optionally, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0090] In some embodiments, the energy storage system may include a battery unit and a housing, with the battery unit housed within the housing. The battery unit includes multiple individual battery cells.

[0091] In some embodiments, the energy storage system may further include a converter electrically connected to the battery device to convert the DC power of the battery device into AC power for energy output from the battery device, or to convert AC power from an external circuit into DC power for energy storage by the battery device.

[0092] In some embodiments, the energy storage system may further include a control module for electrically controlling the battery device.

[0093] In some embodiments, the energy storage system may further include a thermal management module for managing the temperature of the battery device.

[0094] Energy storage systems can include energy storage power stations, wind power systems, solar power systems, mobile power systems, or temporary power supply systems. Energy storage power stations store electrical energy during off-peak hours and provide power to users or electrical equipment during peak hours. Wind power systems collect wind energy from wind turbines, convert it into electricity, and then store it in an energy storage system. Solar power systems convert solar energy into electricity, store it in an energy storage system, and supply it to users as needed. Mobile power systems can power equipment in areas inaccessible by the mains grid, such as remote mountainous areas and isolated wilderness areas. Temporary power supply systems can provide power to users when there is insufficient electricity.

[0095] Power plants are increasingly demanding higher volumetric energy density requirements for energy storage systems. Since energy storage systems typically require a control module to electrically control the battery devices within, this module occupies vertical space, increasing the system's height and volume. This creates a conflict between the control module's placement and the energy storage system's volumetric energy density. Therefore, this application proposes an energy storage system comprising a first compartment, a first battery device, a second compartment, a second battery device, and a control module. The first compartment houses the first battery device. The second compartment houses the second battery device. The first and second compartments are stacked along their height, and both their dimensions along the height are smaller than those of a standard shipping container. The control module is used to electrically control the first and second battery devices. The first compartment includes a first sub-compartment and a second sub-compartment, with a first insulating layer separating the first and second sub-compartments. The first and second sub-compartments are arranged along the length of the first compartment. The first battery device is housed in the first sub-compartment, and the control module is housed in the second sub-compartment.

[0096] In such an energy storage system, by stacking the first and second compartments along the height direction, with both the dimensions of the first and second compartments along the height direction being smaller than those of a standard container, the height of the first and second compartments can be reduced, thereby decreasing their volume. The height of the first and second compartments can be adjusted according to the space occupied by the first battery device in the first compartment and the second battery device in the second compartment, reducing wasted space along the height direction. Furthermore, the control module is housed in the second sub-compartment, allowing the control module and the first battery device to be arranged along the length direction, reducing the space occupied by the control module along the height direction. This further reduces the overall height of the energy storage system, thereby reducing its volume and increasing its volumetric energy density.

[0097] The energy storage system is described below with reference to the accompanying drawings.

[0098] Please refer to Figure 1, which is a structural schematic diagram of an energy storage system 100 provided in some embodiments of this application; Figure 2 is an exploded view of a first battery device 20 or a second battery device 40 provided in some embodiments of this application. This application provides an energy storage system 100, including a first compartment 10, a first battery device 20, a second compartment 30, a second battery device 40, and a control module 50. The first compartment 10 houses the first battery device 20. The second compartment 30 houses the second battery device 40. The first compartment 10 and the second compartment 30 are stacked along the height direction Z. The dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both smaller than the dimensions of a standard shipping container along the height direction Z. The control module 50 is used for electrical control of the first battery device 20 and the second battery device 40. The first compartment 10 includes a first sub-compartment 1 and a second sub-compartment 2. The first compartment 10 has a first isolation layer 3, which separates the first sub-compartment 1 and the second sub-compartment 2. The first sub-compartment 1 and the second sub-compartment 2 are arranged along the length direction X of the first compartment 10. The first battery device 20 is housed in the first sub-compartment 1, and the control module 50 is housed in the second sub-compartment 2.

[0099] Both the first battery device 20 and the second battery device 40 may include a housing 2401 and a battery cell 2402, with the housing 2401 accommodating the battery cell 2402. The housing 2401 contains a sealed space for accommodating the battery cell 2402. The housing 2401 can have various structures. In some embodiments, the housing 2401 may include a first housing 24011 and a second housing 24012, which are interlocked. The first housing 24011 and the second housing 24012 can have various shapes, such as cuboids. The first housing 24011 may be a hollow structure open on one side, and the second housing 24012 may also be a hollow structure open on one side. When the open side of the second housing 24012 is interlocked with the open side of the first housing 24011, a housing 2401 with a sealed space is formed. Alternatively, the first box 24011 can be a hollow structure with one side open, and the second box 24012 can be a plate-like structure. The second box 24012 is fastened to the open side of the first box 24011, thus forming a box 2401 with a storage space.

[0100] In the first battery device 20 or the second battery device 40, there are multiple battery cells 2402. These multiple battery cells 2402 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 2402 are connected in both series and parallel. Alternatively, multiple battery cells 2402 can be first connected in series, parallel, or in a mixed configuration to form a battery cell 2402 assembly, and then the battery cell 2402 assemblies can be connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the housing 2401. Alternatively, all battery cells 2402 can be directly connected in series, parallel, or in a mixed configuration, and then the whole assembly of all battery cells 2402 is housed within the housing 2401. The first compartment 10 can accommodate multiple first battery devices 20. The second compartment 30 can accommodate multiple second battery devices 40. The number of battery devices in the first compartment 10 and the number of battery devices in the second compartment 30 can be the same or different.

[0101] The first compartment 10 and the second compartment 30 are stacked along the height direction Z. The first compartment 10 may be located above the second compartment 30, or it may be located above the second compartment 30. The first compartment 10 and the second compartment 30 are stacked along the height direction Z, and the length direction X, width direction Y, and height direction Z of the first compartment 10 are consistent with the length direction X, width direction Y, and height direction Z of the second compartment 30, respectively.

[0102] The dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both smaller than the dimensions of a standard container along the height direction Z. For example, taking a 20-foot standard container as an example, the dimensions of the standard container along the height direction Z can be 2896 mm, and both the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are smaller than 2896 mm.

[0103] The dimensions of the first compartment 10 along its length direction X and width direction Y may or may not be equal to the dimensions of a standard container along its length and width. The dimensions of the second compartment 30 along its length direction X and width direction Y of the first compartment may or may not be equal to the dimensions of a standard container along its length and width.

[0104] Optionally, for containers of various sizes, dimensions within ±5% of their dimensions can be considered as dimensions within tolerance. It is understood that the first compartment 10 and the second compartment 30 can also be referred to as containers.

[0105] A standard container can be a standard container (GB / T1413-2023) in the transportation process, such as 20 feet, 30 feet, 40 feet or 45 feet, which meets the corresponding standards and has corresponding dimensions for length, width and height.

[0106] A 20-foot measurement may include: a length dimension (X) of 6058mm with a tolerance of 0mm-6mm; a width dimension (Y) of 2438mm with a tolerance of 0mm-5mm; and a height dimension (Z) of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm.

[0107] A 30-foot measurement may include: a length dimension (X) of 9125mm with a tolerance of 0mm-10mm; a second dimension of 2438mm with a tolerance of 0mm-5mm; and a height dimension (Z) of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm.

[0108] A 40-foot dimension may include: a length dimension (X) of 12192 mm with a tolerance of 0 mm to 10 mm; a width dimension (Y) of 2438 mm with a tolerance of 0 mm to 5 mm; and a height dimension (Z) of 2896 mm, 2591 mm, or no greater than 2438 mm with a tolerance of 0 mm to 5 mm.

[0109] A 45-foot unit can include: a length dimension (X) of 13716 mm with a tolerance of 0 mm to 10 mm; a width dimension (Y) of 2438 mm with a tolerance of 0 mm to 5 mm; and a height dimension (Z) of 2591 mm or 2896 mm with a tolerance of 0 mm to 5 mm.

[0110] The control module 50 is housed within the second sub-compartment 2. The control module 50 is used for electrical control of the first battery device 20 and the second battery device 40. Electrical control refers to low-voltage communication control. For example, the first compartment 10 is equipped with a first sub-control module 60, through which the electrical energy of the first battery device 20 is output to the power grid, and the electrical energy of the generator is transmitted to the first battery device 20 for storage through the first sub-control module 60. Similarly, the second compartment 30 is equipped with a second sub-control module 70, through which the electrical energy of the second battery device 40 is output to the power grid, and the electrical energy of the generator is transmitted to the second battery device 40 for storage through the second sub-control module 70. Both the first sub-control module 60 and the second sub-control module 70 are communicatively connected to the control module 50 to enable the control module 50 to perform electrical control of the first battery device 20 and the second battery device 40.

[0111] The first isolation layer 3 separates the first sub-compartment 1 and the second sub-compartment 2, which are arranged along the length direction X of the first compartment 10, in the cabinet structure of the first compartment 10, so that the first battery device 20 contained in the first sub-compartment 1 and the control module 50 contained in the second sub-compartment 2 are independent of each other.

[0112] In this embodiment, by stacking the first compartment 10 and the second compartment 30 along the height direction Z, and ensuring that the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both smaller than the dimensions of a standard container along the height direction Z, the height of the first compartment 10 and the second compartment 30 can be reduced, thereby reducing their volume. The height of the first compartment 10 and the second compartment 30 can be adjusted according to the space occupied by the first battery device 20 in the first compartment 10 and the second battery device 40 in the second compartment 30, reducing wasted space along the height direction Z. Furthermore, the control module 50 is housed in the second sub-compartment 2, allowing the control module 50 and the first battery device 20 to be arranged along the length direction X of the first compartment, reducing the space occupied by the control module 50 along the height direction Z. This reduces the overall height of the energy storage system 100, thereby reducing its volume and increasing its volumetric energy density.

[0113] In some embodiments, please refer to Figure 3, which is a schematic diagram of the framework of a control module 50, a first sub-control module 60, a second sub-control module 70, a first battery device 20, and a second battery device 40 provided in some embodiments of this application. The energy storage system 100 includes a first sub-control module 60 and a second sub-control module 70. The first sub-control module 60 is communicatively connected to the control module 50 and the battery monitoring units of a plurality of first battery devices 20. The second sub-control module 70 is communicatively connected to the control module 50 and the battery monitoring units of a plurality of second battery devices 40. At least one of the first sub-control module 60 and the second sub-control module 70 is housed in a second sub-compartment 2.

[0114] The battery monitoring unit of the first battery device 20 can be used to monitor the voltage and temperature of the battery cells 2402 of the first battery device 20. The first sub-control module 60 can receive the signals monitored by the battery monitoring unit of the first battery device 20 and transmit the monitored signals to the control module 50.

[0115] The battery monitoring unit of the second battery device 40 can be used to monitor the voltage and temperature of the battery cells 2402 of the second battery device 40. The second sub-control module 70 can receive the signals monitored by the battery monitoring unit of the second battery device 40 and transmit the monitored signals to the control module 50.

[0116] The first sub-control module 60 and the second sub-control module 70 can both be housed in the second sub-compartment 2; alternatively, the first sub-control module 60 can be housed in the second sub-compartment 2, and the second sub-control module 70 can be housed in the second compartment 30; or the second sub-control module 70 can be housed in the second sub-compartment 2, and the first sub-control module 60 can be housed in the second compartment 30. There can be one or more first sub-control modules 60, and there can be one or more second sub-control modules 70. In embodiments where there are multiple first sub-control modules 60 and multiple second sub-control modules 70, only a portion of the first sub-control modules 60 can be housed in the second sub-compartment 2, only a portion of the second sub-control modules 70 can be housed in the second sub-compartment 2, or a portion of the first sub-control modules 60 and a portion of the second sub-control modules 70 can be housed in the second sub-compartment 2.

[0117] In this embodiment, by accommodating at least one of the first sub-control module 60 and the second sub-control module 70 in the second sub-compartment 2, at least one of the first sub-control module 60 and the second sub-control module 70 is positioned on one side of the first battery device 20 along the length direction X of the first compartment, thereby reducing the height of the first sub-control module 60 and the second sub-control module 70 relative to the energy storage system 100, thereby further improving the volumetric energy density of the energy storage system 100.

[0118] In some embodiments, please refer to Figure 4, which is a structural schematic diagram of the second sub-compartment 2 provided in some embodiments of this application. The first sub-control module 60 is housed in the second sub-compartment 2. The first sub-control module 60 and the control module 50 are arranged along the width direction Y of the first compartment 10.

[0119] The first sub-control module 60 and control module 50 are housed in the second sub-compartment 2. The first sub-control module 60 and control module 50 can be arranged along the width direction Y of the first compartment, or along the height direction Z. The second sub-control module 70 can be housed within the second sub-compartment 2, or within the second compartment 30.

[0120] There can be one first sub-control module 60, and the first sub-control module 60 and the control module 50 are arranged along the width direction Y of the first compartment 10; there can also be multiple first sub-control modules 60, and multiple first sub-control modules 60 can be located on the same side of the control module 50 along the width direction Y of the first compartment 10, so that the first sub-control module 60 and the control module 50 are arranged along the width direction Y of the first compartment 10.

[0121] In this embodiment, by accommodating the first sub-control module 60 within the second sub-compartment 2, on the one hand, the space occupied by the first sub-control module 60 in the height direction Z of the first compartment 10 can be reduced, thereby increasing the volumetric energy density of the first compartment 10; on the other hand, the first sub-control module 60 can be positioned close to the first battery device 20, thus reducing the wiring difficulty between the first sub-control module 60 and the battery monitoring unit of the first battery device 20. Furthermore, the arrangement of the first sub-control module 60 and the control module 50 along the width direction Y of the first compartment 10 can reduce the space occupied by the first sub-control module 60 and the control module 50 in the height direction Z within the second sub-compartment 2, which is beneficial for reducing the height of the first compartment 10 and increasing its volumetric energy density.

[0122] In some embodiments, please refer to Figure 5, which is a structural schematic diagram of the first compartment 10 provided in some embodiments of this application (showing the first maintenance door 22). The first sub-control module 60 is housed in the second sub-compartment 2, and the first maintenance door 22 is provided in the area of ​​the second sub-compartment 2 opposite to the first sub-compartment 1 and corresponding to the first sub-control module 60.

[0123] The first compartment 10 has two first compartment walls 21 arranged opposite each other along the length direction X of the first compartment. One first compartment wall 21 is located in the first sub-compartment 1, and the other first compartment wall 21 is located in the second sub-compartment 2. The first compartment wall 21 located in the second sub-compartment 2 is provided with a first inspection door 22.

[0124] In a projection plane perpendicular to the length direction X, the orthographic projection of the first inspection door 22 and the orthographic projection of the first sub-control module 60 at least partially overlap, so that the first inspection door 22 corresponds to the first sub-control module 60.

[0125] In this embodiment, the first sub-control module 60 is inspected through the first inspection door 22, which reduces the difficulty of inspecting the first sub-control module 60 and reduces the maintenance cost of the first sub-control module 60.

[0126] In some embodiments, please refer to Figure 6, which is a schematic diagram of the structure of the second compartment 30 provided in some embodiments of this application. The second compartment 30 includes a third sub-compartment 301 and a fourth sub-compartment 302. The second compartment 30 has a second isolation layer 304, which separates the third sub-compartment 301 and the fourth sub-compartment 302. The third sub-compartment 301 and the fourth sub-compartment 302 are arranged along the length direction X of the first compartment. The second battery device 40 is accommodated in the third sub-compartment 301. One of the first sub-control module 60 and the second sub-control module 70 is accommodated in the second sub-compartment 301, and the other is accommodated in the fourth sub-compartment 302.

[0127] The first sub-control module 60 can be housed in the second sub-compartment 2, and the second sub-control module 70 can be housed in the fourth sub-compartment 302; or the first sub-control module 60 can be housed in the fourth sub-compartment 302, and the second sub-control module 70 can be housed in the second sub-compartment 2.

[0128] In this embodiment, by accommodating one of the first sub-control module 60 and the second sub-control module 70 in the second sub-compartment 2 and the other in the fourth sub-compartment 302, the first sub-control module 60 and the second sub-control module 70 can be arranged with the first battery device 20 and the second battery device 40 along the length direction X of the first compartment, thereby reducing the space occupied by the first sub-control module 60 and the second sub-control module 70 in the height direction Z of the first compartment 10 and the second compartment 30, thereby further reducing the height of the energy storage system 100 and increasing the volumetric energy density of the energy storage system 100.

[0129] In some embodiments, the first sub-control module 60 is housed in the second sub-compartment 2, the second sub-control module 70 is housed in the fourth sub-compartment 302, and the area of ​​the fourth sub-compartment 302 opposite to the third sub-compartment 301 and corresponding to the second sub-control module 70 is provided with a second maintenance door 3021.

[0130] By using the second inspection door 3021 to inspect the second sub-control module 70, the inspection difficulty of the second sub-control module 70 is reduced, and the maintenance cost of the second sub-control module 70 is also reduced.

[0131] In some embodiments, multiple second sub-control modules 70 are arranged along the height direction. Multiple first tracks 3022 respectively support multiple second sub-control modules 70, reducing the space occupied by the second sub-control modules 70, facilitating centralized control of the second sub-control modules 70, making inspection and maintenance of the second sub-control modules 70 more convenient, and reducing the maintenance difficulty of the second sub-control modules 70.

[0132] In some embodiments, please refer to Figure 7, which is a structural schematic diagram of the second sub-compartment 2 provided in some embodiments of this application (showing the power distribution module 80). The energy storage system 100 also includes a power distribution module 80 and a fire control module 90. The fire control module 90, the first sub-control module 60, the second sub-control module 70, and the control module 50 are all electrically connected to the power distribution module 80. The fire control module 90 and the power distribution module 80 are both housed in the second sub-compartment 2.

[0133] Both the first compartment 10 and the second compartment 30 are equipped with detection units for monitoring their internal environment. These units can detect parameters such as temperature and combustible gas concentration. The fire control module 90 is communicatively connected to the detection units. In response to the detection signals from the units, the fire control module 90 sends commands to the fire-fighting mechanisms within the first compartment 10 and the second compartment 30, causing them to release fire-fighting agents.

[0134] The power distribution module 80 is used to distribute power to the fire control module 90, the first sub-control module 60, the second sub-control module 70 and the control module 50, so that the fire control module 90, the first sub-control module 60, the second sub-control module 70 and the control module 50 can receive or send signals.

[0135] Both the power distribution module 80 and the fire control module 90 are housed within the second sub-compartment 2. The power distribution module 80 can be located above the fire control module 90; it can also be located below the fire control module 90; or it can be arranged along the width Y direction of the first compartment. Alternatively, the control module 50 can be integrated with the power distribution module 80 to facilitate power distribution from the power distribution module 80 to the control module 50. A first control box is provided within the second sub-compartment 2, and both the power distribution module 80 and the control module 50 are housed within this first control box, thus integrating the control module 50 with the power distribution module 80.

[0136] In this embodiment, by accommodating both the fire control module 90 and the power distribution module 80 in the second sub-compartment 2, the space occupied by the fire control module 90 and the power distribution module 80 in the height direction Z of the energy storage system 100 can be reduced, thereby enabling the energy storage system 100 to be set at a smaller height, and thus improving the volumetric energy density of the energy storage system 100.

[0137] In some embodiments, please refer to Figure 7. The first sub-control module 60 is housed within the second sub-compartment 2, and the power distribution module 80 and the first sub-control module 60 are arranged along the width direction Y of the first compartment 10.

[0138] There can be one or more first sub-control modules 60. In an embodiment where there is one first sub-control module 60, the power distribution module 80 and the first sub-control module 60 are arranged along the width direction Y of the first compartment. The power distribution module 80 and the control module 50 can be located on opposite sides of the first sub-control module 60, or they can be located on the same side of the first sub-control module 60. In an embodiment where there are multiple first sub-control modules 60, the multiple first sub-control modules 60 are located on the same side of the power distribution module 80, such that the power distribution module 80 and the multiple first sub-control modules 60 are arranged along the width direction Y of the first compartment. The control module 50 and the power distribution module 80 can be located on the same side of the multiple first sub-control modules 60, or they can be located on opposite sides of the multiple first sub-control modules 60.

[0139] In this embodiment, by arranging the power distribution module 80 and the first sub-control module 60 along the width direction Y of the first compartment 10, the space occupied by the power distribution module 80 and the first sub-control module 60 in the height direction Z of the first compartment 10 can be reduced, which is conducive to setting a smaller first compartment 10 and improving the volumetric energy density of the first compartment 10.

[0140] In some embodiments, the second sub-compartment 2 houses a plurality of first sub-control modules 60, which are arranged along the height direction Z. With the power distribution module 80 located on one side of the first sub-control modules 60 along the width direction Y of the first compartment, space waste in the second sub-compartment 2 is reduced. In this embodiment, the risk of interference between the first sub-control modules 60 and the control module 50 is reduced, and the maintenance difficulty of the first sub-control modules 60 is lowered.

[0141] In some embodiments, please refer to Figures 7 and 8. Figure 8 is a structural schematic diagram of the first compartment 10 provided in some embodiments of this application (showing the third maintenance door 23). The second sub-compartment 2 is provided with the third maintenance door 23, which is located on the side of the power distribution module 80 away from the first sub-control module 60 along the width direction Y of the first compartment.

[0142] The power distribution module 80 is located closer to the third access door 23 than the first sub-control module 60. When the third access door 23 is open, maintenance personnel can access the power distribution module 80 through the second sub-compartment 2 to maintain it. It is understood that in embodiments where the control module 50 and the power distribution module 80 are integrated, the control module 50 can also be maintained through the third access door 23.

[0143] In this embodiment, by setting the third inspection door 23 on the side of the power distribution module 80 away from the first sub-control module 60 along the width direction Y of the first compartment, the power distribution module 80 can be inspected through the third inspection door 23, thereby reducing the maintenance difficulty and maintenance cost of the power distribution module 80.

[0144] In some embodiments, please continue to refer to Figures 7 and 8. The fire control module 90 is located at the third access door 23.

[0145] The third inspection door 23 has a surface facing the power distribution module 80, on which the fire control module 90 is disposed. When the third inspection door 23 moves, the fire control module 90 can move with the third inspection door 23.

[0146] In this embodiment, on the one hand, when the third inspection door 23 is in the open state, the fire control module 90 and the power distribution module 80 can be inspected, reducing the difficulty of inspecting the fire control module 90; on the other hand, it facilitates the installation of the fire control module 90 and reduces the layout difficulty of the fire control module 90.

[0147] In some embodiments, please refer to Figure 9, which is a structural schematic diagram of the second sub-compartment 2 provided in some embodiments of this application (showing the first guide rail 24). A first maintenance door 22 is provided on the side of the second sub-compartment 2 opposite to the first sub-compartment 1, corresponding to the area of ​​the first sub-control module 60. The second sub-compartment 2 is provided with the first guide rail 24, and the first sub-control module 60 is movably disposed on the first guide rail 24 along the length direction X of the first compartment body.

[0148] The first inspection door 22 is located on the side of the second sub-compartment 2 opposite to the first sub-compartment 1 along the length direction X of the first compartment. The first sub-control module 60 can move along the length direction X of the first compartment on the first guide rail 24, so that the first sub-control module 60 can enter the second sub-compartment 2 or move out of the second sub-compartment 2 along the length direction X of the first compartment.

[0149] In the embodiment where the second sub-compartment 2 is equipped with a third maintenance door 23, the power distribution module 80 can be maintained through the third maintenance door 23, and the first sub-control module 60 can be maintained through the third maintenance door 23, which reduces the maintenance difficulty of the first sub-control module 60.

[0150] In this embodiment, the first sub-control module 60 can be inspected through the first inspection door 22, and the power distribution module 80 can be inspected through the first inspection door 22, which reduces the difficulty of inspecting the first sub-control module 60.

[0151] In some embodiments, please refer to Figure 9. A fourth maintenance door 25 is provided on the side of the second sub-compartment 2 opposite to the first sub-compartment 1, in the area corresponding to the power distribution module 80.

[0152] The fourth inspection door 25 is located on the first compartment wall 21. In the projection plane perpendicular to the length direction X, the orthographic projection of the fourth inspection door 25 and the orthographic projection of the power distribution module 80 at least partially overlap.

[0153] In the embodiment where the second sub-compartment 2 is provided with a first maintenance door 22, the first maintenance door 22 and the fourth maintenance door 25 can be arranged along the width direction Y of the first compartment. In the embodiment where the second sub-compartment 2 is provided with a third maintenance door 23, the power distribution module 80 can be inspected and maintained through the third maintenance door 23 and the fourth maintenance door 25, reducing the difficulty of inspecting and maintaining the power distribution module 80.

[0154] In this embodiment, the power distribution module 80 can also be inspected through the fourth inspection door 25, which reduces the difficulty of inspecting the power distribution module 80.

[0155] In some embodiments, please continue to refer to Figure 9. The fire control module 90, the power distribution module 80, and the control module 50 are all located on the same side of the first sub-control module 60 along the width direction Y of the first compartment.

[0156] The fire control module 90, the power distribution module 80, and the control module 50 are all located on the same side of the first sub-control module 60 along the width direction Y of the first compartment. The fire control module 90, the power distribution module 80, and the control module 50 are all located close to the third inspection door 23 so that the fire control module 90, the power distribution module 80, and the control module 50 can be inspected through the third inspection door 23.

[0157] In this embodiment, by setting the fire control module 90, power distribution module 80 and control module 50 to be located on the same side of the first sub-control module 60 along the width direction Y of the first compartment, the space occupied by the fire control module 90, power distribution module 80 and control module 50 along the width direction Y of the first compartment can be reduced, making the layout of the second sub-compartment 2 more compact and improving the space utilization of the second sub-compartment 2.

[0158] In some embodiments, the fire control module 90 is located above the power distribution module 80.

[0159] The fire control module 90 is located above the power distribution module 80, which increases the height of the fire control module 90. Furthermore, the lower height of the power distribution module 80 helps to lower the center of gravity of the energy storage system 100.

[0160] In this embodiment, the power distribution module 80 has a low height, which is beneficial for the maintenance of the power distribution module 80.

[0161] In some embodiments, the control module 50 and the power distribution module 80 are arranged along the width direction Y of the first compartment.

[0162] In some embodiments, the control module 50 is located above the power distribution module 80.

[0163] In this embodiment, positioning the control module 50 above the power distribution module 80 facilitates the operation of the control module 50. This also makes the layout of the control module 50 and the power distribution module 80 in the second sub-compartment 2 more compact.

[0164] In some embodiments, please refer to Figures 10 and 11. Figure 10 is a schematic diagram of the framework of the control module 50, the first sub-control module 60, and the second sub-control module 70 in the energy storage system 100 provided in some embodiments of this application. Figure 11 is a schematic diagram of the framework of the first inverter 1001, the second inverter 1003, the first sub-control module 60, and the second sub-control module 70 in the energy storage system 100 provided in some embodiments of this application. The first compartment 10 contains a plurality of first battery clusters 201. Each first battery cluster 201 includes a plurality of first battery devices 20 connected in series. The first sub-control module 60 includes a first control part 601 and a second control part 602. The first control part 601 is electrically connected to at least one first battery cluster 201 and is used to electrically connect to the first inverter 1001. The second control part 602 is communicatively connected to the control module 50 and the battery monitoring unit of the plurality of first battery devices 20. The second compartment 30 contains a plurality of second battery clusters 401, each second battery cluster 401 including a plurality of second battery devices 40 connected in series. The second sub-control module 70 includes a third control part 701 and a fourth control part 702. The third control part 701 is electrically connected to at least one second battery cluster 401 and is used to electrically connect a second inverter 1003. The fourth control part 702 is communicatively connected to the control module 50 and the battery monitoring unit of the plurality of second battery devices 40. The energy storage system 100 includes a first sub-control module 60 and a first inverter 1001. The first compartment 10 contains a plurality of first battery clusters 201, each first battery cluster 201 including a plurality of first battery devices 20 connected in series. The first sub-control module 60 includes a first control part 601 and a second control part 602. The first inverter 1001 is electrically connected to at least one first battery cluster 201 through the first control part 601. The second control part 602 is communicatively connected to the control module 50 and the battery monitoring unit of the plurality of first battery devices 20. The energy storage system 100 includes a second sub-control module 50 and a second inverter 1003. The second compartment 30 contains a plurality of second battery clusters 401. Each second battery cluster 401 includes a plurality of second battery devices 40 connected in series. The second sub-control module 50 includes a third control section 701 and a fourth control section 702. The second inverter 1003 is electrically connected to at least one second battery cluster 401 through the third control section 701. The fourth control section 702 is communicatively connected to the control module 50 and the battery monitoring unit of the plurality of second battery devices 40.

[0165] The first battery cluster 201 includes multiple first battery devices 20 connected in series. The number of first battery devices 20 in the first battery cluster 201 can be two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, etc.

[0166] The battery monitoring unit of the first battery device 20 can be used to monitor the voltage and temperature of the battery cells 2402 located in the first compartment 10.

[0167] The first control section 601 is a high-voltage section, through which the first battery cluster 201 transmits electrical energy. The second control section 602 is a low-voltage section, through which communication data is transmitted between the second control section 602 and the control module 50, enabling the control module 50 to monitor and control the first battery device 20.

[0168] The second battery cluster 401 includes multiple second battery devices 40 connected in series. The number of second battery devices 40 in the second battery cluster 401 can be two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, etc.

[0169] The battery monitoring unit of the second battery device 40 can be used to monitor the voltage and temperature of the battery cells 2402 located in the second compartment 30.

[0170] The third control section 701 is the high-voltage section, through which electrical energy is transmitted between the second converter 1003 and the second battery cluster 401. The fourth control section 702 is the low-voltage section, through which communication data is transmitted between the fourth control section 702 and the control module 50, enabling the control module 50 to monitor and control the second battery device 40.

[0171] The first inverter 1001 can be located outside the first compartment 10 and the second compartment 30, or at least in the second sub-compartment 2 or the fourth sub-compartment 302. The first inverter 1001 and at least one first battery cluster 201 are electrically connected through a first control unit 601. The first control unit 601 can control the on / off state of the first inverter 1001 and the first battery cluster 201 to control the input or output of electrical energy from the first battery cluster 201. The first inverter 1001 can correspond one-to-one with the first battery cluster 201, or the first inverter 1001 can correspond to multiple first battery clusters 201. The second control unit 602 is communicatively connected to the control module 50 to transmit control signals from the first sub-control module 60 to the control module 50, or to transmit instructions from the control module 50 to the first sub-control module 60 for execution, thereby establishing a communication connection between the first sub-control module 60 and the control module 50. There can be one first sub-control module 60, which is communicatively connected to the control module 50; or there can be multiple first sub-control modules 60, which are all communicatively connected to the same control module 50.

[0172] The second inverter 1003 can be located outside the first compartment 10 and the second compartment 30, or at least in the second sub-compartment 2 or the fourth sub-compartment 302. The second inverter 1003 and at least one second battery cluster 401 are electrically connected via a third control unit 701. The third control unit 701 can control the on / off state of the second inverter 1003 and the second battery cluster 401 to control the input or output of electrical energy to the second battery cluster 401. The second inverter 1003 can correspond one-to-one with the second battery cluster 401, or multiple second battery clusters 401 can be associated with the same second inverter 1003. The fourth control unit 702 is communicatively connected to the control module 50 to transmit control signals from the second sub-control module 70 to the control module 50, or to transmit instructions from the control module 50 to the second sub-control module 70 for execution, thus establishing a communication connection between the second sub-control module 70 and the control module 50. There can be one second sub-control module 70, which is communicatively connected to the control module 50; or there can be multiple second sub-control modules 70, which are all communicatively connected to the same control module 50.

[0173] In this embodiment, a first sub-control module 60 corresponds to at least one battery cluster, and a second sub-control module 70 corresponds to at least one second battery cluster 401. This can reduce the number of first sub-control modules 60 and second sub-control modules 70 used, reduce the space occupied by first sub-control modules 60 and second sub-control modules 70 in the energy storage system 100 along the height direction Z, and improve the volumetric energy density of the energy storage system 100.

[0174] In some embodiments, please refer to Figure 12, which is a schematic diagram of the structure of the second sub-compartment 2 provided in some embodiments of this application (showing the first bus terminal 1002). The energy storage system 100 also includes the first bus terminal 1002, which is electrically connected to the first converter 1001 and the first control part 601. The first converter 1001 is located outside the first compartment 10 and the second compartment 30, and the first bus terminal 1002 is housed inside the second sub-compartment 2.

[0175] The wires leading out from the first control section 601 are connected to the first bus terminal 1002, and are electrically connected to the first converter 1001 through the first bus terminal 1002, thereby realizing the electrical connection between the first converter 1001 and the first control section 601.

[0176] In this embodiment, by accommodating the first bus terminal 1002 within the second sub-compartment 2, the space occupied by the first bus terminal 1002 in the height direction Z of the first compartment 10 can be reduced, thereby increasing the volumetric energy density of the first compartment 10.

[0177] In some embodiments, the energy storage system 100 further includes a second bus terminal 1004, which is electrically connected to a second converter 1003 and a third control section 701. The second converter 1003 is located outside the first compartment 10 and the second compartment 30, and the second bus terminal 1004 is housed in the second sub-compartment 2.

[0178] The wires leading out from the second control section 602 are connected to the second bus terminal 1004, and are electrically connected to the second converter 1003 through the second bus terminal 1004, thereby realizing the electrical connection between the second converter 1003 and the second control section 602.

[0179] In this embodiment, by accommodating both the first bus terminal 1002 and the second bus terminal 1004 within the second sub-compartment 2, on the one hand, the space occupied by the first bus terminal 1002 and the second bus terminal 1004 in the Z-direction of the energy storage system 100 can be reduced, thereby increasing the volumetric energy density of the energy storage system 100; on the other hand, the wiring difficulty between the first bus terminal 1002 and the second bus terminal 1004 and the first converter 1001 and the second converter 1003 respectively can be reduced, thereby optimizing the layout of the energy storage system 100.

[0180] In some embodiments, each first battery cluster 201 includes six first battery devices 20 connected in series. Each second battery cluster 401 includes six second battery devices 40 connected in series.

[0181] In the embodiment where the first compartment 10 contains 36 first battery devices 20 and the second compartment 30 contains 36 second battery devices 40, the six first inverters 1001 correspond to the six first battery clusters 201 in the first compartment 10, and the six second inverters 1003 correspond to the six second battery clusters 401 in the second compartment 30.

[0182] In this embodiment, each first converter 1001 can input or output electrical energy to six first battery devices 20. Multiple first converters 1001 are electrically connected to multiple first battery clusters 201, reducing the risk of interference between the multiple first battery clusters 201 and improving the performance of the first compartment 10. Similarly, each second converter 1003 can input or output electrical energy to six first battery devices 20. Multiple second converters 1003 are electrically connected to multiple second battery clusters 401, reducing the risk of interference between the multiple second battery clusters 401 and improving the performance of the second compartment 30.

[0183] In some embodiments, the maximum operating voltage of the first converter 1001 is 1500V. In some embodiments, the maximum operating voltage of the second converter 1003 is 1500V.

[0184] In some embodiments, the maximum operating voltage of the first converter 1001 is 1500V; the maximum operating voltage of the second converter 1003 is 1500V.

[0185] Taking a lithium iron phosphate battery cell 2402 as an example, the maximum operating voltage of the battery cell 2402 is 3.65V. Each first battery device 20 includes 68 battery cells 2402 connected in series, and the maximum operating voltage of each first battery device 20 is 248.2V. Each first battery cluster 201 includes 6 first battery devices 20 connected in series, and each second battery cluster 401 includes 6 second battery devices 40 connected in series. Therefore, the maximum operating voltage of the first battery cluster 201 is 1489.2V, and the maximum operating voltage of the first inverter 1001 is 1500V, so that the first inverter 1001 can be adapted to the first battery cluster 201. The maximum operating voltage of the second battery cluster 401 is 1489.2V, and the maximum operating voltage of the second inverter 1003 is 1500V, so that the second inverter 1003 can be adapted to the second battery cluster 401.

[0186] In this embodiment, a first battery cluster 201 is electrically connected to a first converter 1001 with a maximum operating voltage of 1500V, so that the first battery cluster 201 can be adapted to the 1500V operating voltage. A second battery cluster 401 is electrically connected to a second converter 1003 with a maximum operating voltage of 1500V, so that the second battery cluster 401 can be adapted to the 1500V operating voltage, thereby improving the performance of the energy storage system 100.

[0187] In some embodiments, please continue to refer to Figure 12. The energy storage system 100 also includes a power distribution module 80, and a first sub-control module 60, a second sub-control module 70 and a control module 50 are all electrically connected to the power distribution module 80. The power distribution module 80 is housed in the second sub-compartment 2 and is located above the first bus terminal 1002 and the second bus terminal 1004.

[0188] The second sub-compartment 2 is equipped with a mounting base 801, which supports the power distribution module 80. The first bus terminal 1002 and the second bus terminal 1004 are both located below the mounting base 801. Alternatively, the first bus terminal 1002 and the second bus terminal 1004 can be arranged along the width direction Y of the first compartment; or the first bus terminal 1002 can be located above the second bus terminal 1004; or the second bus terminal 1004 can be located above the first bus terminal 1002.

[0189] In this embodiment, by placing the power distribution module 80 above the first bus terminal 1002 and the second bus terminal 1004, the first bus terminal 1002 and the second bus terminal 1004 can be led out from the bottom of the second sub-compartment 2 to achieve wiring with the first converter 1001 and the second converter 1003. This reduces the wiring difficulty of the first bus terminal 1002 and the second bus terminal 1004 and reduces the risk of interference between the power distribution module 80 and the first bus terminal 1002 and the second bus terminal 1004.

[0190] In some embodiments, the first converter 1001 and the second converter 1003 may be devices for electrically connecting the first bus terminal 1002 and the second bus terminal 1004 to the power generation device. The electrical energy generated by the power generation device can be input to the first battery device 20 and the second battery device 40 via the first bus terminal 1002 and the second bus terminal 1004 after passing through the first converter 1001 and the second converter 1003.

[0191] In some embodiments, please refer to Figure 13, which is a schematic diagram of the structure of the second sub-compartment 2 provided in some embodiments of this application. The energy storage system 100 also includes a first converter 1001, which is electrically connected to at least one first battery cluster 201 through a first control part 601, and the first converter 1001 is integrated with the first sub-control module 60.

[0192] The energy storage system 100 includes a second control box, in which the first converter 1001 and the first sub-control module 60 are both housed, thus integrating the first converter 1001 and the first sub-control module 60 into one unit. The second control box can be housed within a second sub-compartment 2.

[0193] In this embodiment, by integrating the first converter 1001 and the first sub-control module 60 into one unit, the space occupied by the first converter 1001 and the first sub-control module 60 can be reduced, and the wiring difficulty of the first converter 1001 and the first sub-control module 60 can be reduced.

[0194] In some embodiments, the energy storage system 100 further includes a second converter 1003, which is electrically connected to at least one second battery cluster 401 via a third control section 701, and the second converter 1003 is integrated with the second sub-control module 70.

[0195] The energy storage system 100 includes a third control box, in which the second converter 1003 and the second sub-control module 70 are both housed, thus integrating the second converter 1003 and the second sub-control module 70 into one unit. The third control box can be housed within a fourth sub-compartment 302.

[0196] In this embodiment, by integrating the second converter 1003 and the second sub-control module 70 into one unit, the space occupied by the second converter 1003 and the second sub-control module 70 can be reduced, and the wiring difficulty of the second converter 1003 and the second sub-control module 70 can be reduced.

[0197] In some embodiments, the first converter 1001 is integrated with the corresponding first control unit 601.

[0198] The first converter 1001 is integrated with the first control unit 601, so that the first converter 1001 is integrated with the high voltage part of the first sub-control module 60, which facilitates the electrical connection between the first converter 1001 and the first control unit 601.

[0199] In this embodiment, by integrating the first converter 1001 with the corresponding first control part 601, the integration degree of the first control part 601 and the first converter 1001 is improved, and the setup difficulty of the first control part 601 and the first converter 1001 is reduced.

[0200] In some embodiments, the second converter 1003 is integrated with the corresponding third control unit 701.

[0201] The second converter 1003 is integrated with the third control section 701, so that the second converter 1003 is integrated with the high voltage section of the second sub-control module 70, which facilitates the electrical connection between the second converter 1003 and the third control section 701.

[0202] In this embodiment, the integration of the second converter 1003 with the corresponding third control part 701 improves the integration of the third control part 701 and the second converter 1003, and reduces the difficulty of setting up the third control part 701 and the second converter 1003.

[0203] In some embodiments, each first sub-control module 60 is electrically connected to a first battery cluster 201; each second sub-control module 70 is electrically connected to a second battery cluster 401. In this embodiment, the first sub-control module 60 and the first battery cluster 201 correspond one-to-one, reducing the risk of interference between multiple first battery clusters 201. The second sub-control module 70 and the second battery cluster 401 correspond one-to-one, reducing the risk of interference between multiple second battery clusters 401.

[0204] In some embodiments, the energy storage system 100 includes a first battery monitoring circuit and a second battery monitoring circuit. The first battery monitoring circuit is used to collect first data from a first battery device 20, and the second battery monitoring circuit is used to collect second data from a second battery device 40. The control module 50 is used to determine the operating status data of the energy storage system 100. The operating status data of the energy storage system 100 is associated with the first data and the second data.

[0205] In some embodiments, the second control section 602 is communicatively connected between the first battery monitoring circuit and the control module 50, and the fourth control section 702 is communicatively connected between the second battery monitoring circuit and the control module 50.

[0206] In some embodiments, the second control section 602 is communicatively connected between the first battery monitoring circuit and the control module 50, and the second control section 602 is used to forward the first data. The fourth control section 702 is communicatively connected between the second battery monitoring circuit and the control module 50, and the fourth control section 702 is used to forward the second data.

[0207] In some embodiments, the second control section 602 is communicatively connected between the first battery monitoring circuit and the control module 50. The second control section 602 is used to acquire and process first data and transmit the processed data to the control module 50. The fourth control section 702 is communicatively connected between the second battery monitoring circuit and the control module 50. The fourth control section 702 is used to acquire and process second data and transmit the processed data to the control module 50.

[0208] In some embodiments, the first battery monitoring circuit is directly connected to the control module 50, and the second battery monitoring circuit is also directly connected to the control module 50. The control module 50 processes the first data and the second data to determine the operating status data of the energy storage system 100.

[0209] In some embodiments, the control module 50 may be a module in the energy storage system 100 used to monitor and manage the first battery device 20 and the second battery device 40, and may serve as a management unit for the first battery device 20 and the second battery device 40 in the energy storage system 100. The control module 50 may be communicatively connected to the first battery monitoring circuit and the second battery monitoring circuit, and may receive and process information from the first battery monitoring circuit and the second battery monitoring circuit to determine the operating status data of the energy storage system 100 using the information from the first battery monitoring circuit and the second battery monitoring circuit. The control module 50 may monitor information such as current, voltage, power, state of charge, or temperature of the battery cells 2402 of the first battery device 20 and the second battery device 40 to determine the operating status data of the energy storage system 100. As an example, the control module 50 may include modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module. In some embodiments, the Insulation Monitoring Module (IMM), the Main Battery Management Unit (MBMU), the Ethernet ETH, and the Fiber Optic Conversion Module are all control units.

[0210] In some embodiments, the energy storage system 100 further includes a second control section 602 and a fourth control section 702, wherein the second control section 602 is communicatively connected between the first battery monitoring circuit and the control module 50, and the fourth control section 702 is communicatively connected between the first battery monitoring circuit and the control module 50.

[0211] The fourth control unit 702 may be a module connected between the second battery monitoring circuit and the control module 50, and used to forward information such as current, voltage, power, state of charge or temperature of the battery cell 2402 of the second battery device 40 to the control module 50 or process it before forwarding it to the control module 50.

[0212] The second control unit 602 is communicatively connected between the first battery monitoring circuit and the control module 50, enabling the second control unit 602 to forward information such as current, voltage, power, state of charge, or temperature of the battery cells 2402 of the first battery device 20 to the control module 50, or to process and then forward it to the control module 50. The fourth control unit 702 is communicatively connected between the second battery monitoring circuit and the control module 50, enabling the fourth control unit 702 to forward information such as current, voltage, power, state of charge, or temperature of the battery cells 2402 of the second battery device 40 to the control module 50, or to process and then forward it to the control module 50.

[0213] By setting a second control section 602 between the first battery monitoring circuit and the control module 50, and a fourth control section 702 between the second battery monitoring circuit and the control module 50, the control system of the energy storage system 100 is made into a three-level framework. This reduces the length and complexity of the communication harness, reduces sampling errors, improves the reliability of the system, and also reduces the requirements for the processor and communication bus, thus reducing the overall cost of the system.

[0214] In some embodiments, a plurality of first sub-control modules 60 are arranged along the height direction Z, and a plurality of second sub-control modules 70 are arranged along the height direction Z.

[0215] The first sub-control module 60 can be housed within the second sub-compartment 2, and the second sub-control module 70 can be housed within the fourth sub-compartment 302. Multiple first sub-control modules 60 and multiple second sub-control modules 70 are arranged along the height direction Z. The fourth sub-compartment 302 and the second sub-compartment 2 can also be arranged along the height direction Z, so that the first sub-control modules 60 and the second sub-control modules 70 are arranged along the height direction Z.

[0216] In this embodiment, the layout of the first sub-control module 60 and the second sub-control module 70 is more compact, which reduces the layout difficulty of the first sub-control module 60 and the second sub-control module 70.

[0217] In some embodiments, please refer to FIG14, which is a schematic diagram of the structure of the second sub-compartment 2 provided in some embodiments of this application (showing fuse 1005). Fuse 1005 is electrically connected between the first control part 601 and the first battery cluster 201.

[0218] In some embodiments, a fuse 1005 is electrically connected between the third control section 701 and the second battery cluster 401, and the fuse 1005 is housed in the second sub-compartment 2.

[0219] In this embodiment, both the fuse 1005 and the control module 50 are located in the second sub-compartment 2, which facilitates centralized maintenance of the fuse 1005 and the control module 50.

[0220] In some embodiments, please refer to Figure 15, which is a structural schematic diagram of the second compartment 30 provided in some embodiments of this application (showing the second sub-control module 70). The second compartment 30 includes a third sub-compartment 301 and a fourth sub-compartment 302. The second compartment 30 has a second isolation layer 304, which separates the third sub-compartment 301 and the fourth sub-compartment 302. The third sub-compartment 301 and the fourth sub-compartment 302 are arranged along the length direction X of the first compartment 10. The second battery device 40 is accommodated in the third sub-compartment 301, and the second sub-control module 70 is accommodated in the fourth sub-compartment 302.

[0221] It is possible that only the second sub-control module 70 is housed in the fourth sub-compartment 302, and the first sub-control module 60 is housed in the second sub-compartment 2; or it is possible that the second sub-control module 70 is housed in the fourth sub-compartment 302, a portion of the first sub-control module 60 is housed in the second sub-compartment 2, and the other portion is housed in the fourth sub-compartment 302.

[0222] In this embodiment, the second battery device 40 and the second sub-control module 70 are arranged along the length direction X of the first compartment, which can reduce the space occupied by the second sub-control module 70 in the height direction Z of the second compartment 30, so that the second compartment 30 can be set with a smaller height, thereby improving the volumetric energy density of the second compartment 30.

[0223] In some embodiments, please continue to refer to Figure 15. A second maintenance door 3021 is provided on the side of the fourth sub-compartment 302 opposite to the third sub-compartment 301, in the area corresponding to the second sub-control module 70.

[0224] In a projection plane perpendicular to the length direction X, the orthographic projection of the second inspection door 3021 and the orthographic projection of the second sub-control module 70 at least partially overlap. In an embodiment where the second sub-compartment 2 is provided with the first inspection door 22, the second inspection door 3021 and the first inspection door 22 can be located on the same side of the first compartment 10 to facilitate the maintenance of the first sub-control module 60 and the second sub-control module 70.

[0225] In this embodiment, the second sub-control module 70 is inspected through the second inspection door 3021, which reduces the difficulty of inspecting the second sub-control module 70 and reduces the maintenance cost of the second sub-control module 70.

[0226] In some embodiments, a second guide rail 3022 is provided inside the fourth sub-compartment 302, and the second sub-control module 70 is movably disposed on the second guide rail 3022 along the length direction X of the first compartment.

[0227] The second inspection door 3021 is located on the side of the fourth sub-compartment 302 opposite to the third sub-compartment 301 along the length direction X of the first compartment. The second sub-control module 70 can move along the length direction X of the first compartment on the second guide rail 3022, so that the second sub-control module 70 can enter the fourth sub-compartment 302 or move out of the fourth sub-compartment 302 along the length direction X of the first compartment.

[0228] In this embodiment, the second sub-control module 70 can be moved out of or into the fourth sub-compartment 302 via the second guide rail 3022, which reduces the maintenance difficulty of the second sub-control module 70.

[0229] In some embodiments, the first compartment 10 is located below the second compartment 30.

[0230] In embodiments where any one of the control module 50, the first sub-control module 60, the second sub-control module 70, the power distribution module 80, the fire control module 90, the first bus terminal 1002, the second bus terminal 1004, and the fuse 1005 is located in the first compartment 10, the height and angle of these components facilitate the maintenance and replacement of these components, and reduce the operational and wiring difficulties of the energy storage system 100.

[0231] In this embodiment, the control module 50 is located in the second sub-compartment 2, and the second sub-compartment 2 is located below the second compartment 30, which makes the height of the control module 50 lower, which is beneficial to the operation and maintenance of the control module 50 and reduces the operation difficulty and maintenance cost of the control module 50.

[0232] In some embodiments, please refer to Figure 16, which is a schematic diagram of the structure of an energy storage system 100 provided in some embodiments of this application. The energy storage system 100 also includes a thermal management module 1006, which is used to manage the temperature of the first battery device 20 and the second battery device 40. The thermal management module 1006 is disposed on the top of the second compartment 30.

[0233] The thermal management module 1006 can manage the temperature of all the first battery devices 20 and second battery devices 40. The thermal management module 1006 may be located at the top outer edge of the second compartment 30, with the top wall of the second compartment 30 separating the thermal management module 1006 and the first battery devices 20. Alternatively, both the first battery devices 20 and the thermal management module 1006 may be housed within the second compartment 30. The second compartment 30 may include one housing compartment, where both the first battery devices 20 and the thermal management module 1006 are housed. Alternatively, the second compartment 30 may include two housing compartments arranged along the height direction Z, with the first battery devices 20 and the thermal management module 1006 housed in the two separate housing compartments, and the thermal management module 1006 located in the upper housing compartment.

[0234] The thermal management module 1006 can be a liquid cooling unit, which includes multiple thermal management units such as a pumping device and a heat exchanger. These multiple thermal management units can be connected through pipelines, and the liquid cooling unit delivers cooling medium to the thermal management components of each battery device through the pipelines.

[0235] In this embodiment, the thermal management module 1006 can manage the temperature of the first battery device 20 and the second battery device 40, reducing the difficulty of temperature management for the first battery device 20 and the second battery device 40. The thermal management module 1006 is disposed on the top of the second compartment 30, which helps the thermal management module 1006 to dissipate heat, and the thermal management module 1006 can cover at least a portion of the second battery device 40 and the first battery device 20, which helps to reduce the impact of sunlight and rain on the first battery device 20 and the second battery device 40.

[0236] In some embodiments, the second compartment 30 further includes a third sub-compartment 301 and a fifth sub-compartment 303. The second compartment 30 has a third isolation layer 305 that separates the third sub-compartment 301 and the fifth sub-compartment 303. The fifth sub-compartment 303 is located above the third sub-compartment 301. The second battery device 40 is housed in the third sub-compartment 301, and the thermal management module 1006 is housed in the fifth sub-compartment 303.

[0237] The third isolation layer 305 separates the fifth sub-compartment 303 and the third sub-compartment 301, making them independent of each other. The fifth sub-compartment 303 is located above the third sub-compartment 301. The thermal management module 1006 is housed in the fifth sub-compartment 303 and the second battery device 40 is housed in the third sub-compartment 301. The third isolation layer 305 separates the thermal management module 1006 and the second battery device 40. The thermal management module 1006 is located above the second battery device 40, allowing it to block sunlight and reduce its impact on the second battery device 40.

[0238] In this embodiment, the third isolation layer 305 can separate the second battery device 40 and the thermal management module 1006, reducing the risk of interference between the second battery device 40 and the thermal management module 1006. The fifth sub-compartment 303 is located above the third sub-compartment 301. On the one hand, it improves the heat dissipation effect of the thermal management module 1006; on the other hand, the thermal management module 1006 can cover at least a portion of the second battery device 40 and the first battery device 20, which helps to reduce the impact of sunlight and rain on the first battery device 20 and the second battery device 40.

[0239] In some embodiments, the second compartment 30 further includes a fourth sub-compartment 302. The second compartment 30 has a second isolation layer 304. The fifth sub-compartment 303 is located on the side of the third isolation layer 305 away from the third sub-compartment 301 and the fourth sub-compartment 302. The second isolation layer 304 separates the third sub-compartment 301 and the fourth sub-compartment 302. The third sub-compartment 301 and the fourth sub-compartment 302 are arranged along the length direction X of the first compartment.

[0240] The first battery device 20 includes a first thermal management component and a plurality of battery cells 2402. The first thermal management component is used to manage the temperature of the plurality of battery cells 2402 in the first battery device 20. The second battery device 40 includes a second thermal management component and a plurality of battery cells 2402. The second thermal management component is used to manage the temperature of the plurality of battery cells 2402 in the second battery device 40. The energy storage system 100 also includes an inlet pipe and a return pipe. The thermal management module 1006, the inlet pipe, the first thermal management component and the return pipe are connected to form a first heat exchange circulation loop. The thermal management module 1006, the inlet pipe, the second thermal management component and the return pipe are connected to form a second heat exchange circulation loop. A portion of the return pipe and a portion of the inlet pipe pass through the fourth sub-compartment 302.

[0241] In some embodiments, the energy storage system 100 includes a second sub-control module 70, which is communicatively connected to the control module 50 and the battery monitoring unit of a plurality of second battery devices 40. The second sub-control module 70 is housed in a fourth sub-compartment 302. The second sub-control module 70 and the return liquid pipeline and the inlet liquid pipeline housed in the fourth sub-compartment 302 are arranged along the width direction Y of the first compartment.

[0242] In some embodiments, please refer to FIG17, which is a schematic diagram of the structure of an energy storage system 100 provided in some embodiments of this application (showing ladder 306). Ladder 306 is provided on one side of the first compartment 10 and the second compartment 30 along the length direction X of the first compartment or along the width direction Y of the first compartment.

[0243] The ladder 306 may be provided on one side of the first compartment 10 and the second compartment 30 along the length direction X of the first compartment; or the ladder 306 may be provided on one side of the first compartment 10 and the second compartment 30 along the width direction Y of the first compartment.

[0244] Maintenance personnel can climb up the second compartment 30 via ladder 306 to facilitate the inspection and maintenance of the thermal management module 1006, the second battery device 40, and the second sub-control module 70.

[0245] In this embodiment, the thermal management module 1006 can be inspected and maintained by climbing the ladder 306 to the second compartment 30, which reduces the maintenance cost of the thermal management module 1006.

[0246] In some embodiments, the ladder 306 is located on the side of the first compartment 10 and the second compartment 30 opposite to the second sub-compartment 2 along the length direction X of the first compartment.

[0247] The ladder 306 is located on the side of the second compartment 30 away from the second sub-compartment 2 along the length X of the first compartment. The second sub-compartment 2 needs to be equipped with a second inspection door 3021 or a third inspection door 23, which can reduce the risk of interference between the ladder 306 and the second inspection door 3021 or the third inspection door 23.

[0248] In this embodiment, by setting the ladder 306 on the side of the second compartment 30 away from the second sub-compartment 2 along the length direction X of the first compartment, the risk of the ladder 306 interfering with the maintenance of the control module 50 is reduced.

[0249] In some embodiments, please refer to Figure 18, which is a schematic diagram of the structure of a thermal management module 1006 provided in some embodiments of this application. The thermal management module 1006 includes a heat dissipation module 10061. The fifth sub-compartment 303 includes a first side wall 3031 and a first top wall 3032 arranged adjacent to each other. The first top wall 3032 is connected to the top of the first side wall 3031. Along the height direction Z, the first top wall 3032 is located on the side of the third isolation layer 305 away from the third sub-compartment 301. Both the first side wall 3031 and the first top wall 3032 are provided with a first ventilation opening 3033, which is used for ventilation of the heat dissipation module 10061.

[0250] In the embodiment where the thermal management module 1006 is housed within the fifth sub-compartment 303, both the first top wall 3032 and the first side wall 3031 of the fifth sub-compartment 303 are provided with first ventilation openings 3033. The two first ventilation openings 3033 are respectively connected to the air inlet and air outlet of the thermal management module 1006 to achieve heat dissipation and ventilation for the heat dissipation module 10061.

[0251] In this embodiment, by providing a first vent 3033, the first vent 3033 helps the heat dissipation module 10061 dissipate heat from the circumference of the thermal management module 1006, thereby improving the temperature control effect of the thermal management module 1006 on the first battery device 20 and the second battery device 40.

[0252] In some embodiments, the thermal management module 1006 includes a housing 10064, and a heat dissipation module 10061 is disposed within the housing 10064. The housing 10064 includes a second sidewall 10065 and a second top wall 10066 disposed adjacent to each other. The second sidewall 10065 is located on one side of the housing 10064 along the width direction Y of the first compartment. Both the second sidewall 10065 and the top wall 10066 are provided with second vents 10067. The first vent 3033 disposed on the first sidewall 3031 communicates with the second vent 10067 disposed on the second sidewall 10065, and the first vent 3033 disposed on the first top wall 3032 communicates with the second vent 10067 disposed on the second top wall 10066.

[0253] The housing 10064 has an accommodating space, in which the heat dissipation module 10061 is housed. The housing 10064 can protect the heat dissipation module 10061 and reduce the risk of damage to the heat dissipation module 10061.

[0254] The housing 10064 is provided with two second ventilation openings 10067, one of which includes an air inlet and the other includes an air outlet. For example, the second ventilation opening 10067 provided on the second top wall 10066 includes an air outlet for exhausting air from the heat dissipation module 10061.

[0255] In this embodiment, the second vent 10067 disposed on the outer casing and the first vent 3033 disposed on the fifth sub-compartment 303 are connected, and the thermal management module 1006 can dissipate heat through the first vent 3033, thereby improving the heat dissipation effect of the heat dissipation module 10061.

[0256] In some embodiments, the second sidewall 10065 is located on one side of the housing 10064 along the width direction Y of the first compartment.

[0257] The thickness direction of the second sidewall 10065 is perpendicular to the thickness direction of the second sub-compartment 2. When the second ventilation opening 10067 provided in the second sidewall 10065 includes an air inlet, it can reduce the amount of heat generated inside the second sub-compartment 2 flowing into the second ventilation opening 10067 of the second sidewall 10065. When the second ventilation opening 10067 provided in the second sidewall 10065 includes an air outlet, it can reduce the impact of the high-temperature gas discharged from the second ventilation opening 10067 of the second sidewall 10065 on the temperature of the various components inside the second sub-compartment 2.

[0258] In this embodiment, the second ventilation opening 10067 of the second sidewall 10065 and the second sub-compartment 2 are oriented differently, which reduces the risk of interference between the air intake and exhaust of the second ventilation opening 10067 and the control module 50.

[0259] In some embodiments, please refer to Figure 19, which is a schematic diagram of the arrangement of the condenser 10062 and the fan 10063 provided in some embodiments of this application. The second vent 10067 disposed on the second side wall 10065 includes an air inlet, and the second vent 10067 disposed on the second top wall 10066 includes an air outlet. The heat dissipation module 10061 includes the fan 10063 and the condenser 10062. Along the width direction Y of the first compartment, the condenser 10062 is disposed between the air inlet and the fan 10063, and the fan 10063 is used to dissipate heat from the condenser 10062.

[0260] Condenser 10062 is a type of heat exchanger that converts gas or vapor into liquid, rapidly transferring its heat to the surrounding air. The operation of condenser 10062 is exothermic, resulting in a relatively high temperature. Fan 10063 dissipates heat from condenser 10062, thus helping to lower its temperature.

[0261] In this embodiment, the fan 10063 can supply air to the condenser 10062 through the air inlet to reduce the temperature of the condenser 10062 and improve the condensing effect of the condenser 10062.

[0262] In some embodiments, the dimension of the first compartment 10 along the height direction Z is smaller than the dimension of the second compartment 30 along the height direction Z.

[0263] The dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both smaller than the dimensions of a standard container along the height direction Z. A thermal management module 1006 is installed on the top of the second compartment 30. The thermal management module 1006 occupies the height space of the first compartment 10, thus the dimensions of the first compartment 10 along the height direction Z are smaller than the dimensions of the second compartment 30 along the height direction Z.

[0264] In this embodiment, the thermal management module 1006 is disposed in the first chamber 10, and the second chamber 30 can have a smaller size along the height direction Z, thereby improving the volumetric energy density of the second chamber 30.

[0265] In some embodiments, please refer to Figures 20 and 21. Figure 20 is a schematic diagram of the structure of an energy storage system 100 provided in some embodiments of this application (showing a first battery device 20 and a second battery device 40); Figure 21 is a schematic diagram of the structure of a battery cell 2402 provided in some embodiments of this application. The first battery device 20 and the second battery device 40 each include multiple battery cells 2402. Each battery cell 2402 includes a housing 24021. The height of the housing 24021 is 200mm-230mm, and / or the length of the housing 24021 is 240mm-310mm, and / or the width of the housing 24021 is 60mm-85mm. All the first battery devices 20 in the first compartment 10 are arranged in 4-6 rows and 4 columns. Multiple first battery devices 20 in each row are arranged along the length of the first compartment 10, and multiple first battery devices 20 in each column are arranged along the height. And / or, all the second battery devices 40 in the second compartment 30 are arranged in 4-6 rows and 4 columns. Multiple second battery devices 40 in each row are arranged along the length of the second compartment 30, and multiple second battery devices 40 in each column are arranged along the height.

[0266] The battery cell 2402 may also include an electrode terminal 24022, which is disposed on one side of the housing 24021 along the height direction of the housing 24021. The length of the housing 24021 is the dimension of the housing 24021 along the length direction, the height of the housing 24021 is the dimension of the housing 24021 along the height direction, and the width of the housing 24021 is the dimension of the housing 24021 along the width direction.

[0267] The height H of the outer casing 24021 can be any one of 220mm, 221mm, 222mm, 223mm, 224mm, 225mm, 226mm, 227mm, 228mm, 229mm, 230mm or any combination thereof.

[0268] The width K of the outer casing 24021 can be any one of 60mm, 61mm, 62mm, 63mm, 64mm, 65mm, 66mm, 67mm, 68mm, 69mm, 70mm, 71mm, 72mm, 73mm, 74mm, 75mm, 76mm, 77mm, 78mm, 79mm, 80mm, 81mm, 82mm, 83mm, 84mm, 85mm or any value between two of them.

[0269] The length L of the outer casing 24021 can be any one of 240mm, 245mm, 250mm, 255mm, 260mm, 265mm, 270mm, 275mm, 280mm, 285mm, 290mm, 295mm, 300mm, 305mm, or 310mm, or any value between two of them.

[0270] All the first battery devices 20 within the first compartment 10 can be arranged in 4 rows and 4 columns; or in 5 rows and 4 columns; or in 6 rows and 4 columns. Similarly, all the second battery devices 40 within the second compartment 30 can be arranged in 4 rows and 4 columns; or in 5 rows and 4 columns; or in 6 rows and 4 columns.

[0271] In this embodiment, while ensuring that the first compartment and its internal components, and the second compartment and its internal components, can be transported independently to meet the transportation requirements of the energy storage system, the first and second battery devices, including individual battery cells, can also efficiently utilize the internal space of the first and second compartments in the vertical direction, thereby enabling the energy storage system to possess higher energy. When the energy storage system is put into use, the first and second compartments are stacked along the vertical direction. Compared to a single standard container, this design allows the energy storage system to balance transportation convenience with greater energy capacity.

[0272] In some embodiments, the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both greater than or equal to one-third times the dimensions of a standard container along the height direction Z.

[0273] When the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both greater than or equal to one-third times the dimensions of the standard container along the height direction Z, the energy storage system 100 has high manufacturability and is more convenient to transport and install.

[0274] Optionally, the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both greater than or equal to half the dimensions of a standard container along the height direction Z.

[0275] When the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both greater than or equal to half the dimension of a standard container along the height direction Z, the energy storage system 100 exhibits higher manufacturability, higher volumetric energy density, and easier transportation and installation. For example, when the first compartment 10 and the second compartment 30 are stacked, the height is greater than that of a standard container. The total weight of the first compartment 10 and the components housed within it is relatively low, as is the total weight of the second compartment 30 and the components housed within it. This configuration allows the first compartment 10 and the second compartment 30 to be transported separately, and when stacked at the point of use, the energy storage system 100 has a higher energy capacity.

[0276] In some embodiments, the sum of the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z is greater than or equal to the dimension of a standard container along the height direction Z.

[0277] For example, the standard container is a 20-foot standard container with a height of 2896 mm. The sum of the dimensions of the first compartment 10 along the height direction Z and the dimensions of the second compartment 30 along the height direction Z is greater than or equal to 2896 mm.

[0278] By making the sum of the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z greater than or equal to the dimension of a standard container along the height direction Z, it is beneficial to increase the power capacity of the energy storage system 100.

[0279] Optionally, the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both greater than or equal to 805 mm and both less than 2896 mm.

[0280] The dimension of the first compartment 10 along the height direction Z can be any one of 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2100mm, 2200mm, 2300mm, 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, or 2895mm, or a value between any two of them.

[0281] The dimension of the second compartment 30 along the height direction Z can be any one of 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2100mm, 2200mm, 2300mm, 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, or 2895mm, or a value between any two of them.

[0282] By setting the dimensions of the first compartment 10 along the height direction Z and the second compartment 30 along the height direction Z to be greater than or equal to 805 mm and less than 2896 mm, it is beneficial to reduce the total weight of the first compartment 10 and the components inside the first compartment 10, reduce the total weight of the second compartment 30 and the components inside the second compartment 30, and maximize the power capacity of the energy storage system 100, thereby reducing the operating cost of the energy storage system 100.

[0283] In this embodiment, when the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both greater than or equal to 805 mm, the first compartment 10 and the second compartment 30 can accommodate more battery devices, thereby increasing the volumetric energy density of the energy storage device. When the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both less than 2896 mm, the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both smaller than the dimensions of a standard container along the height direction Z, which helps to reduce the space occupied by the first compartment 10 and the second compartment 30 and increase the volumetric energy density of the first compartment 10 and the second compartment 30. Therefore, when the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both greater than or equal to 805 mm and less than 2896 mm, it is possible to balance accommodating more battery devices in the first compartment 10 and the second compartment 30 with reducing volume waste in the first compartment 10 and the second compartment 30, thereby improving the volumetric energy density of the energy storage device.

[0284] In some embodiments, the dimensions of the first compartment 10 and the second compartment 30 along their length direction X are consistent with the dimensions of the standard container along their length direction X, and the dimensions of the first compartment 10 and the second compartment 30 along their width direction Y are consistent with the dimensions of the standard container along their width direction Y.

[0285] In this embodiment, the dimensions of the first compartment 10 and the second compartment 30 along the length direction X and the width direction Y of the first compartment are consistent with those of a standard container. During transportation, the first compartment 10 and the second compartment 30 can occupy the space of a standard container, reducing the space wastage of the first compartment 10 and the second compartment 30. The consistency of the dimensions of the first compartment 10 and the second compartment 30 along the length direction X and the width direction Y of the first compartment is beneficial to the stacking of the first compartment 10 and the second compartment 30, thereby improving the area energy density of the first compartment 10 and the second compartment 30.

[0286] In some embodiments, the total weight of the first compartment 10 and the components disposed within the first compartment 10 is less than or equal to 36 tons.

[0287] Components located within the first compartment 10 include, for example, the first battery device 20, connecting pipelines, maintenance box, thermal management module 1006, etc.

[0288] The total weight of the first compartment 10 and the components disposed within the first compartment 10 can be any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, or 36 tons, or any combination thereof.

[0289] Components located within the second compartment 30, such as the second battery device 40 and connecting pipelines.

[0290] In this embodiment, when the total weight of the components disposed in the first compartment 10 is less than or equal to 36 tons, it is beneficial to transport the first compartment 10 and its internal components, and reduces the difficulty of transporting the first compartment 10 and the components disposed in the first compartment 10.

[0291] In some embodiments, the total weight of the second compartment 30 and the components disposed within the second compartment 30 is less than or equal to 36 tons. The total weight of the second compartment 30 and the components disposed within the second compartment 30 can be any value from 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, and 36 tons, or any value between two of these. In this embodiment, when the total weight of the components disposed within the second compartment 30 is less than or equal to 36 tons, it facilitates the transportation of the second compartment 30 and its internal components, reducing the difficulty of transporting the second compartment 30 and the components disposed within it.

[0292] Please refer to Figures 10, 11, and 14-16. This application provides an energy storage system 100, including a first compartment 10, a first battery device 20, a second compartment 30, a second battery device 40, a control module 50, a first sub-control module 60, a second sub-control module 70, a fire control module 90, and a power distribution module 80. The first compartment 10 includes a first sub-compartment 1 and a second sub-compartment 2. The first compartment 10 has a first isolation layer 3 that separates the first sub-compartment 1 and the second sub-compartment 2. The first sub-compartment 1 and the second sub-compartment 2 are arranged along the length direction X of the first compartment 10. The first sub-compartment 1 houses the first battery device 20. The second compartment 30 includes a third sub-compartment 301, a fourth sub-compartment 302, and a fifth sub-compartment 303. The second compartment 30 has a second isolation layer 304 and a third isolation layer 305. The fifth sub-compartment 303 is located on the side of the third isolation layer 305 opposite to the third sub-compartment 301 and the fourth sub-compartment 302, and is located above the third sub-compartment 301. The second isolation layer 304 separates the third sub-compartment 301 and the fourth sub-compartment 302. The third sub-compartment 301 and the fourth sub-compartment 302 are arranged along the length direction X of the first compartment. The first compartment 10 and the second compartment 30 are stacked along the height direction Z, with the first compartment 10 located below the second compartment 30. The dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both smaller than the dimensions of a standard container along the height direction Z. A thermal management module 1006 is disposed within the fifth sub-compartment 303. Control module 50, first sub-control module 60, fire control module 90, and power distribution module 80 are all housed in second sub-compartment 2, and fire control module 90, power distribution module 80, and control module 50 are all located on the same side of first sub-control module 60 along the width direction Y of the first compartment. Second sub-control module 70 is housed in fourth sub-compartment 302. The first compartment 10 contains a plurality of first battery clusters 201, each first battery cluster 201 including a plurality of first battery devices 20 connected in series. The first sub-control module 60 includes a first control part 601 and a second control part 602. The first control part 601 is electrically connected to at least one first battery cluster 201, and the second control part 602 is communicatively connected to the control module 50 and the battery monitoring unit of the plurality of first battery devices 20. The second compartment 30 contains a plurality of second battery clusters 401, each second battery cluster 401 including a plurality of second battery devices 40 connected in series. The second sub-control module 70 includes a third control part 701 and a fourth control part 702. The third control part 701 is electrically connected to at least one second battery cluster 401, and the fourth control part 702 is communicatively connected to the control module 50 and the battery monitoring unit of the plurality of second battery devices 40.The energy storage system 100 also includes a first converter 1001 and a first bus terminal 1002. The first bus terminal 1002 is electrically connected to the first converter 1001 and a first control unit 601. The first converter 1001 is located outside the first compartment 10 and the second compartment 30, and the first bus terminal 1002 is housed within the second sub-compartment 2. The energy storage system 100 also includes a second converter 1003 and a second bus terminal 1004. The second bus terminal 1004 is electrically connected to the second converter 1003 and a third control unit 701. The second converter 1003 is located outside the first compartment 10 and the second compartment 30, and the second bus terminal 1004 is housed within the second sub-compartment 2. A fuse 1005 is electrically connected between the first control unit 601 and the first battery cluster 201, and the fuse 1005 is electrically connected between the third control unit 701 and the second battery cluster 401. The fuse 1005 is housed within the second sub-compartment 2.

[0293] In such an energy storage system 100, by stacking a first compartment 10 and a second compartment 30 along the height direction Z, and ensuring that the dimensions of the first compartment 10 and the second compartment 30 along the height direction Z are both smaller than the dimensions of a standard container along the height direction Z, the height of the first compartment 10 and the second compartment 30 can be reduced, thereby reducing their volume. The height of the first compartment 10 and the second compartment 30 can be adjusted according to the space occupied by the first battery device 20 in the first compartment 10 and the second battery device 40 in the second compartment 30, reducing the wasted space along the height direction Z of the first compartment 10 and the second compartment 30. Furthermore, the control module 50 is housed in the second sub-compartment 2, allowing the control module 50 and the first battery device 20 to be arranged along the length direction X of the first compartment, reducing the space occupied by the control module 50 along the height direction Z, thereby reducing the overall height of the energy storage system 100, and consequently reducing the volume of the energy storage system 100, thus increasing the volumetric energy density of the energy storage system 100. Each first sub-control module 60 corresponds to at least one battery cluster, and each second sub-control module 70 corresponds to at least one second battery cluster 401. This reduces the number of first and second sub-control modules 60 and 70 used, reduces their space occupation along the height Z direction of the energy storage system 100, and increases the volumetric energy density of the energy storage system 100. By accommodating both the first bus terminal 1002 and the second bus terminal 1004 within the second sub-compartment 2, on the one hand, it reduces the space occupation along the height Z direction of the energy storage system 100 by the first and second bus terminals 1002 and 1004, increasing the volumetric energy density of the energy storage system 100; on the other hand, it reduces the wiring difficulty between the first and second bus terminals 1002 and 1004 and the first inverter 1001 and the second inverter 1003, respectively, optimizing the layout of the energy storage system 100.

[0294] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage system, wherein, include: A first compartment and a first battery device, wherein the first compartment houses the first battery device; The second compartment houses the second battery device. The first compartment and the second compartment are stacked along the height direction. The dimensions of the first compartment along the height direction and the dimensions of the second compartment along the height direction are both smaller than the dimensions of a standard container along the height direction. A control module is used to perform electrical control on the first battery device and the second battery device; The first compartment includes a first sub-compartment and a second sub-compartment. The first compartment has a first isolation layer that separates the first sub-compartment and the second sub-compartment. The first sub-compartment and the second sub-compartment are arranged along the length of the first compartment. The first battery device is housed in the first sub-compartment, and the control module is housed in the second sub-compartment.

2. The energy storage system as described in claim 1, wherein, The energy storage system includes a first sub-control module and a second sub-control module. The first sub-control module is communicatively connected to the control module and a plurality of battery monitoring units of the first battery device. The second sub-control module is communicatively connected to the control module and a plurality of battery monitoring units of the second battery device. At least one of the first sub-control module and the second sub-control module is housed in the second sub-compartment.

3. The energy storage system as described in claim 2, wherein, The first sub-control module is housed in the second sub-compartment, and the first sub-control module and the control module are arranged along the width direction of the first compartment.

4. The energy storage system as described in claim 2 or 3, wherein, The first sub-control module is housed in the second sub-compartment, and a first maintenance door is provided on the side of the second sub-compartment opposite to the first sub-compartment, in the area corresponding to the first sub-control module.

5. The energy storage system as described in claim 4, wherein, The second sub-compartment is provided with a first guide rail, and the first sub-control module is movably mounted on the first guide rail along the length of the first compartment.

6. The energy storage system according to any one of claims 2-5, wherein, The second compartment includes a third sub-compartment and a fourth sub-compartment. The second compartment has a second isolation layer that separates the third sub-compartment and the fourth sub-compartment. The third sub-compartment and the fourth sub-compartment are arranged along the length of the first compartment. One of the first sub-control module and the second sub-control module is housed in the second sub-compartment, and the other is housed in the fourth sub-compartment.

7. The energy storage system as described in claim 6, wherein, The first sub-control module is housed in the second sub-compartment, the second sub-control module is housed in the fourth sub-compartment, and a second maintenance door is provided in the area of ​​the fourth sub-compartment opposite to the third sub-compartment, corresponding to the second sub-control module.

8. The energy storage system as described in claim 7, wherein, The fourth sub-compartment is provided with a second guide rail, and the second sub-control module is movably mounted on the second guide rail along the length of the first compartment.

9. The energy storage system as described in claim 7 or 8, wherein, Multiple second sub-control modules are arranged along the height direction.

10. The energy storage system according to any one of claims 2-9, wherein, The energy storage system also includes a power distribution module and a fire control module. The fire control module, the first sub-control module, the second sub-control module, and the control module are all electrically connected to the power distribution module. The fire control module and the power distribution module are both housed in the second sub-compartment.

11. The energy storage system of claim 10, wherein, The first sub-control module is housed within the second sub-compartment, and the power distribution module and the first sub-control module are arranged along the width of the first compartment.

12. The energy storage system of claim 11, wherein, The second sub-compartment contains multiple first sub-control modules, which are arranged along the height direction.

13. The energy storage system as described in claim 11 or 12, wherein, The second sub-compartment is provided with a third maintenance door, which is located on the side of the power distribution module away from the first sub-control module along the width direction of the first compartment.

14. The energy storage system of claim 13, wherein, The fire control module is located at the third inspection door.

15. The energy storage system according to any one of claims 10-14, wherein, A fourth maintenance door is provided on the side of the second sub-compartment opposite to the first sub-compartment, in the area corresponding to the power distribution module.

16. The energy storage system according to any one of claims 10-15, wherein, The fire control module, the power distribution module, and the control module are all located on the same side of the first sub-control module along the width direction of the first compartment.

17. The energy storage system according to any one of claims 10-16, wherein, The fire control module is located above the power distribution module.

18. The energy storage system according to any one of claims 10-17, wherein, The control module is located above the power distribution module.

19. The energy storage system according to any one of claims 1-18, wherein, The energy storage system includes a first sub-control module. A first compartment contains multiple first battery clusters, each first battery cluster including multiple first battery devices connected in series. The first sub-control module includes a first control section and a second control section. The first control section is electrically connected to at least one first battery cluster and is used to electrically connect to a first inverter. The second control section is communicatively connected to the control module and a battery monitoring unit for the multiple first battery devices. The energy storage system also includes a second sub-control module. A second compartment contains multiple second battery clusters, each second battery cluster including multiple second battery devices connected in series. The second sub-control module includes a third control section and a fourth control section. The third control section is electrically connected to at least one second battery cluster and is used to electrically connect to a second inverter. The fourth control section is communicatively connected to the control module and a battery monitoring unit for the multiple second battery devices.

20. The energy storage system of claim 19, wherein, The energy storage system further includes a first bus terminal, which is electrically connected to the first converter and the first control unit. The first converter is located outside the first compartment and the second compartment, and the first bus terminal is housed within the second sub-compartment; and / or, The energy storage system further includes a second bus terminal, which is electrically connected to the second converter and the third control unit. The second converter is located outside the first compartment and the second compartment, and the second bus terminal is housed inside the second sub-compartment.

21. The energy storage system of claim 20, wherein, The energy storage system also includes a power distribution module. The first sub-control module, the second sub-control module, and the control module are all electrically connected to the power distribution module. The power distribution module is housed in the second sub-compartment and is located above the first bus terminal and / or the second bus terminal.

22. The energy storage system of claim 19, wherein, The energy storage system includes a first converter, which is integrated with a first sub-control module, and the first converter and the first sub-control module are located within a second sub-compartment; and / or, The energy storage system includes a second converter, which is integrated with the second sub-control module and is located within the second sub-compartment.

23. The energy storage system according to any one of claims 19-22, wherein, Each of the first sub-control modules is electrically connected to one of the first battery clusters; and / or, each of the second sub-control modules is electrically connected to one of the second battery clusters.

24. The energy storage system according to any one of claims 19-23, wherein, A fuse is electrically connected between the first control unit and the first battery cluster; and / or, a fuse is electrically connected between the third control unit and the second battery cluster. The fuse is housed in the second sub-compartment.

25. The energy storage system according to any one of claims 1-24, wherein, The first compartment is located below the second compartment.

26. The energy storage system of claim 25, wherein, The energy storage system also includes a thermal management module, which is used to manage the temperature of the first battery device and the second battery device. The thermal management module is located on the top of the second compartment.

27. The energy storage system as described in claim 25 or 26, wherein, The second compartment includes a third sub-compartment and a fifth sub-compartment. The second compartment has a third isolation layer that separates the third sub-compartment and the fifth sub-compartment. The fifth sub-compartment is located above the third sub-compartment. The second battery device is housed in the third sub-compartment, and the thermal management module is housed in the fifth sub-compartment.

28. The energy storage system of claim 27, wherein, Both the first and second compartments are equipped with ladders along one side of the length of the first compartment or along one side of the width of the first compartment.

29. The energy storage system of claim 28, wherein, The ladder is located on the side of the first compartment and the second compartment away from the second sub-compartment along the length of the first compartment.

30. The energy storage system according to any one of claims 26-29, wherein, The thermal management module includes a heat dissipation module. The fifth sub-compartment includes a first side wall and a first top wall arranged adjacent to each other. Along the height direction, the first top wall is located on the side of the third isolation layer away from the third sub-compartment. Both the first side wall and the first top wall are provided with a first ventilation opening, which is used for ventilation of the heat dissipation module.

31. The energy storage system of claim 30, wherein, The thermal management module includes a housing, and the heat dissipation module is disposed inside the housing. The housing includes a second side wall and a second top wall disposed adjacent to each other, and both the second side wall and the second top wall are provided with second vents. The first ventilation opening located on the first side wall is correspondingly provided with the second ventilation opening located on the second side wall, and the first ventilation opening located on the first top wall is correspondingly provided with the second ventilation opening located on the second top wall.

32. The energy storage system according to claim 31, wherein, The second sidewall is located on one side of the shell along the width direction of the first compartment.

33. The energy storage system according to claim 31 or 32, wherein, The second ventilation opening located on the second side wall includes an air inlet, and the second ventilation opening located on the second top wall includes an air outlet. The heat dissipation module includes a fan and a condenser. Along the width direction of the first compartment, the condenser is located between the air inlet and the fan, and the fan is used to dissipate heat from the condenser.

34. The energy storage system according to any one of claims 25-33, wherein, The dimension of the first compartment along the height direction is smaller than the dimension of the second compartment along the height direction.

35. The energy storage system according to any one of claims 1-34, wherein, Both the first battery device and the second battery device include multiple battery cells, each battery cell including a housing, the height of the housing being 200mm-230mm, and / or the length of the housing being 240mm-310mm, and / or the width of the housing being 60mm-85mm; All the first battery devices in the first compartment are arranged in 4-6 rows and 4 columns, with multiple first battery devices in each row arranged along the length of the first compartment and multiple first battery devices in each column arranged along the height; and / or, all the second battery devices in the second compartment are arranged in 4-6 rows and 4 columns, with multiple second battery devices in each row arranged along the length of the second compartment and multiple second battery devices in each column arranged along the height.

36. The energy storage system according to any one of claims 1-35, wherein, The dimensions of the first and second compartments along the height direction are both greater than or equal to one-third times the dimensions of the standard container along the height direction.

37. The energy storage system of claim 36, wherein, The dimensions of the first and second compartments along the height direction are both greater than or equal to half the dimensions of the standard container along the height direction.

38. The energy storage system according to any one of claims 1-37, wherein, The sum of the dimensions of the first and second compartments along the height direction is greater than or equal to the dimension of a standard container along the height direction.

39. The energy storage system according to any one of claims 1-38, wherein, The dimensions of the first compartment and the second compartment along the height direction are both greater than or equal to 805 mm and both less than 2896 mm.

40. The energy storage system according to any one of claims 1-39, wherein, The dimensions of the first and second compartments along their length are the same as those of a standard container along its length, and the dimensions of the first and second compartments along their width are the same as those of the standard container along its width.

41. The energy storage system according to any one of claims 1-40, wherein, The total weight of the first compartment and the components disposed within the first compartment is less than or equal to 36 tons; and / or, The total weight of the second compartment and the components disposed within the second compartment is less than or equal to 36 tons.

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