Energy storage system

Abstract

The utility model provides an energy storage system. The energy storage system comprises a plurality of battery devices, a first bin body, a second bin body, a control module, a heat management module and a converter device. Battery devices are contained in the first bin body and the second bin body, the first bin body is located above the second bin body, and at least one of the sizes of the first bin body and the second bin body in the height direction is smaller than the size of a standard container in the height direction. The first bin body and the second bin body contain the control module and the thermal management module. The converter device is located outside the first bin body and the second bin body, and the converter device is electrically connected with the battery device. The battery device comprises single batteries, each single battery comprises a shell and an electrode terminal, the width and height of the shell are smaller than the length of the shell, the multiple single batteries are arranged in the width direction of the shell in the length direction of the shell, and the electrode terminal is arranged at at least one end of the shell. The energy storage system has a high space utilization rate, and the volume energy density of the energy storage system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more particularly, to an energy storage system. Background Art

[0002] With the rapid development of technology, electric energy has become an indispensable energy source in people's production and life. In order to improve the smoothness of electric energy supply and ensure the normal operation of production and life, an energy storage system is required. The energy storage system can realize the cyclic storage and release of electric energy. By charging or discharging the battery device of the energy storage system, electric energy can be stored in the energy storage system or the electric energy stored in the energy storage system can be supplied to the electrical device. The energy storage system is widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation, energy storage power stations and other fields.

[0003] In the development of energy storage systems, in addition to improving the performance of energy storage systems, how to improve the volumetric energy density of energy storage systems is also an issue that cannot be ignored. Therefore, how to improve the volumetric energy density of energy storage systems is a technical issue that requires continuous improvement in energy storage technology. Summary of the Utility Model

[0004] An embodiment of the present application provides an energy storage system that can improve the volumetric energy density of the energy storage system.

[0005] In a first aspect, an embodiment of the present application provides an energy storage system, including a first bin, a second bin, a control module, a thermal management module, a power conversion device, and a plurality of battery devices; battery devices are accommodated in both the first bin and the second bin. The first bin and the second bin are stacked along the height direction, with the first bin located above the second bin. At least one of the dimensions of the first bin and the second bin along the height direction is less than the dimension of a standard container along the height direction; the control module is used to perform electrical control on the plurality of battery devices in the first bin and the second bin; the control module is accommodated in one of the first bin and the second bin, or a part of the control module is accommodated in the first bin and another part is accommodated in the second bin; the thermal management module is used to manage the temperature of the plurality of battery devices in the first bin and the second bin; the thermal management module is accommodated in one of the first bin and the second bin, or a part of the thermal management module is accommodated in the first bin and another part is accommodated in the second bin; the power conversion device is electrically connected to the plurality of battery devices in the first bin and the second bin, and the power conversion device is located outside the first bin and the second bin; wherein, each battery device includes a plurality of battery cells, each battery cell includes a housing and electrode terminals, the width and height of the housing are both less than the length of the housing, and the plurality of battery cells are arranged in the width direction of the housing to form a battery cell assembly. Along the length direction of the housing, the electrode terminals are provided at at least one end of the housing.

[0006] In the above technical solution, the battery device, the control module, and the thermal management module are accommodated in the first housing and the second housing. On the one hand, it can reduce the space waste of the energy storage system. On the other hand, it can improve the integration degree of the energy storage system and enhance the stability of the energy storage system. The converter device is arranged outside the first housing and the second housing, which can reduce the risk of interference between the converter and the battery device, and can reduce the space occupation of the first housing and the second housing, making it more convenient to arrange the battery device in the first housing and the second housing. The width and height of the outer shell of the battery cell are both smaller than the length of the outer shell. A plurality of battery cells are arranged along the width direction of the outer shell to form a battery cell assembly, and the electrode terminals are arranged at at least one end of the outer shell along the length direction, which can enable the plurality of electrode terminals of the battery cell assembly to occupy the space of the battery cell assembly in the battery device along the length direction of the outer shell, reduce the space waste along the width direction of the battery cell, thereby reducing the space waste in the battery device, improving the volume energy density of the battery device, and further improving the volume energy density of the energy storage system.

[0007] In some embodiments, the battery device includes two battery cell assemblies arranged along the length direction of the first housing, and each battery cell assembly includes a plurality of battery cells arranged along the width direction of the first housing. In this way, the two battery cell assemblies are arranged along the length direction of the first housing, and the length direction of the battery cells in the battery cell assembly extends along the length direction of the first housing, which can reduce the influence of the size of the battery cells on the size of the battery device in the height direction, so that the battery device can have a smaller size in the height direction, enabling the first housing and the second housing to accommodate more battery devices in the height direction and improving the volume energy density of the energy storage system.

[0008] In some embodiments, the electrode terminals of the battery cells in one battery cell assembly are arranged back-to-back with the electrode terminals of the battery cells in the other battery cell assembly. In this way, the electrode terminals of the two battery cell assemblies are arranged back-to-back, which can reduce the risk of interference between the electrode terminals of the two battery cell assemblies.

[0009] In some embodiments, the battery cell is a laminated battery cell. The battery cell includes a pressure relief mechanism and two electrode terminals with opposite polarities. The outer shell includes a first wall portion and a second wall portion oppositely arranged along the length direction. Both electrode terminals are arranged on the first wall portion, and the pressure relief mechanism is arranged on the second wall portion. In this way, the electrode terminals of the battery cell are arranged away from the pressure relief mechanism, reducing the risk of interference between the pressure relief mechanism and the electrode terminals and enhancing the stability of the battery cell.

[0010] In some embodiments, the two battery cell assemblies are connected in series. Each battery cell assembly includes 33 to 36 battery cells, and the 33 to 36 battery cells are connected in series. In this way, the battery device can have a relatively high voltage, which is beneficial to adjusting the output voltage and input voltage of the energy storage system.

[0011] In some embodiments, each battery cell assembly includes 34 battery cells, or each battery cell assembly includes 35 battery cells. When the battery cell assembly has 34 battery cells connected in series, the battery device includes 68 battery cells connected in series, increasing the input or output voltage of the battery device.

[0012] In some embodiments, the battery cell includes an electrode assembly, and the electrode assembly is a laminated electrode assembly. In this way, the energy density of the battery cell is relatively high, which helps to increase the volumetric energy density of the energy storage system.

[0013] In some embodiments, the dimension of the housing along the length direction of the housing is 465 mm - 525 mm; and / or, the dimension of the housing along the width direction of the housing is 49 mm - 60 mm; and / or, the dimension of the housing along the height direction of the housing is 163 mm - 184 mm. In this way, both the width and height of the battery cell are smaller than the length, and the electrode terminal is disposed at at least one end of the battery cell along the length direction. The height of the battery device can be reduced with reference to the height of the battery cell, thereby reducing the space occupied by the battery device along the height direction, increasing the space utilization rate of the first compartment and the second compartment along the height direction, making the battery cells arranged along the length direction in the first compartment and the second compartment more compact, so that more battery cells can be accommodated in the first compartment and the second compartment, and the volumetric energy density of the energy storage system is increased.

[0014] In some embodiments, the electrode terminal is disposed at at least one end of the housing along the length direction of the first compartment. In this way, the electrode terminal is disposed at at least one end of the housing along the length direction of the first compartment, which can reduce the space occupied by the battery cell along the height direction of the first compartment. Thus, a battery device with a smaller height dimension can be set to adapt to the installation of the battery cell, and the height space occupied by the battery device in the first compartment or the second compartment can be reduced, which is beneficial for more battery devices to be accommodated in the first compartment and the second compartment, and the volumetric energy density of the energy storage system is increased.

[0015] In some embodiments, the number of battery devices in the first compartment is equal to the number of battery devices in the second compartment. In this way, the total energy of the first compartment and the second compartment after accommodating the battery devices is equal, improving the compatibility of the first compartment and the second compartment.

[0016] In some embodiments, the number of battery devices in the first compartment is 36. In this way, all the battery devices in the first compartment can be arranged in rows and columns, improving the space utilization rate of the first compartment and further increasing the volumetric energy density of the energy storage system.

[0017] In some embodiments, the number of battery devices in the second compartment is 36. In this way, all the battery devices in the second compartment can be arranged in rows and columns, improving the space utilization rate of the second compartment and thus enhancing the volume energy density of the energy storage system.

[0018] In some embodiments, the number of battery devices in the first compartment is 36, and the number of battery devices in the second compartment is 36. In this way, it is convenient to arrange the battery devices in the first compartment or the second compartment, improving the compatibility between the first compartment and the second compartment.

[0019] In some embodiments, multiple battery devices located in the first compartment are arranged in 9 rows and 4 columns. Each row of battery devices is arranged along the length direction of the first compartment, and each column of battery devices is arranged along the height direction of the first compartment. In this way, the battery devices in the first compartment are arranged more compactly, which can reduce the space waste in the first compartment and increase the volume energy density of the first compartment.

[0020] In some embodiments, multiple battery devices located in the second compartment are arranged in 9 rows and 4 columns. Each row of battery devices is arranged along the length direction of the first compartment, and each column of battery devices is arranged along the height direction of the first compartment. In this way, the battery devices in the second compartment are arranged more compactly, which can reduce the space waste in the second compartment and increase the volume energy density of the second compartment.

[0021] In some embodiments, multiple battery devices located in the first compartment are arranged in 9 rows and 4 columns, and multiple battery devices located in the second compartment are arranged in 9 rows and 4 columns. Each row of battery devices is arranged along the length direction of the first compartment, and each column of battery devices is arranged along the height direction of the first compartment. In this way, there are 9 battery devices arranged along the height direction and 4 battery devices arranged along the length direction in both the first compartment and the second compartment, which can reduce the space waste in the first compartment and the second compartment and improve the space utilization rate of the first compartment and the second compartment.

[0022] In some embodiments, the dimension of the first compartment along the height direction and the dimension of the second compartment along the height direction are both smaller than the dimension of a standard container along the height direction. In this way, compared with the standard container, the first compartment and the second compartment can have a smaller volume, so that the first compartment and the second compartment can have a larger volume energy density after accommodating the battery devices.

[0023] In some embodiments, the number of battery devices in the first compartment is 30. In this way, the battery devices in the first compartment can be arranged in 10 rows and 3 columns or 6 rows and 5 columns, which can make the battery devices in the first compartment arranged more compactly, reduce the space waste in the first compartment, and increase the volume energy density of the first compartment.

[0024] In some embodiments, the number of battery devices in the second chamber is 30. In this way, the battery devices in the second chamber can be arranged in 10 rows and 3 columns or 6 rows and 5 columns, enabling the battery devices in the second chamber to be arranged more compactly, reducing the waste of space in the second chamber, and enhancing the volume energy density of the second chamber.

[0025] In some embodiments, the number of battery devices in the first chamber is 30, and the number of battery devices in the second chamber is 30. In this way, it is convenient to arrange the battery devices in the first chamber or the second chamber, improving the compatibility between the first chamber and the second chamber.

[0026] In some embodiments, the multiple battery devices located in the first chamber are arranged in 10 rows and 3 columns. Each row of battery devices is arranged along the length direction of the first chamber, and each column of battery devices is arranged along the height direction of the first chamber. In this way, all the battery devices in the first chamber are arranged in rows and columns, reducing the waste of space in the first chamber and enhancing the volume energy density of the first chamber.

[0027] In some embodiments, the multiple battery devices located in the second chamber are arranged in 10 rows and 3 columns. Each row of battery devices is arranged along the length direction of the first chamber, and each column of battery devices is arranged along the height direction of the first chamber. In this way, all the battery devices in the second chamber are arranged in rows and columns, reducing the waste of space in the second chamber and enhancing the volume energy density of the second chamber.

[0028] In some embodiments, the multiple battery devices located in the first chamber are arranged in 10 rows and 3 columns, and the multiple battery devices located in the second chamber are arranged in 10 rows and 3 columns. Each row of battery devices is arranged along the length direction of the first chamber, and each column of battery devices is arranged along the height direction of the first chamber. In this way, the arrangement of the battery devices in the first chamber and the second chamber is more regular, which is beneficial to the installation and maintenance of the battery devices.

[0029] In some embodiments, the multiple battery devices located in the first chamber are arranged in 12 rows and 3 columns, and the multiple battery devices located in the second chamber are arranged in 9 rows and 4 columns. Each row of battery devices is arranged along the length direction of the first chamber, and each column of battery devices is arranged along the height direction of the first chamber. In this way, it is possible to reduce the space occupied by the battery devices along the length direction of the first chamber, which is beneficial for the first chamber to accommodate other components and improves the volume utilization rate of the first chamber.

[0030] In some embodiments, the dimension of the first chamber along the height direction is greater than the dimension of a standard container along the height direction; the dimension of the second chamber along the height direction is less than the dimension of a standard container along the height direction. In this way, the first chamber and the second chamber can adjust their heights according to the number of internal components, which is beneficial to improving the space utilization rate of the first chamber and the second chamber.

[0031] In some embodiments, the current conversion device includes a first current converter. The multiple battery devices located in the first compartment include multiple first battery clusters. Each first battery cluster includes multiple battery devices connected in series. The first current converter is electrically connected to at least one first battery cluster; and / or, the current conversion device includes a second current converter. The multiple battery devices include multiple second battery clusters. Each second battery cluster includes multiple battery devices connected in series. The second current converter is electrically connected to at least one second battery cluster. By electrically connecting the first battery cluster through the first current converter, the first current converter can achieve the input or output of the electrical energy of the first battery cluster, enabling the multiple first battery clusters to be respectively connected to electrical equipment or the power grid, thereby improving the performance of the first compartment. By electrically connecting the second battery cluster through the second current converter, the second current converter can achieve the input or output of the electrical energy of the second battery cluster, enabling the multiple second battery clusters to be respectively connected to electrical equipment or the power grid, thereby improving the performance of the second compartment.

[0032] In some embodiments, the energy storage system further includes a first sub-control module. The first sub-control module includes a first control part and a second control part. Each first current converter is electrically connected to at least one first battery cluster through a first control part. The second control part is communicatively connected to the control module and the battery monitoring unit of the battery devices located in the first compartment; and / or, the energy storage system further includes a second sub-control module. The second sub-control module includes a third control part and a fourth control part. Each second current converter is electrically connected to at least one second battery cluster through a third control part. The fourth control part is communicatively connected to the control module and the battery monitoring unit of the battery devices located in the second compartment. In this way, the first sub-control module can control the on / off of the first current converter and the first battery cluster, reducing the control difficulty of the first battery cluster. The control module can receive the signals of the first sub-control module to monitor and manage the signals of the first sub-control module. The second sub-control module can control the on / off of the second current converter and the second battery cluster, reducing the control difficulty of the second battery cluster. The control module can receive the signals of the second sub-control module to monitor and manage the signals of the second sub-control module.

[0033] In some embodiments, the first current converter and the corresponding first control part are integrated into one body; and / or, the second current converter and the corresponding third control part are integrated into one body. In this way, the integration degree of the first control part and the first current converter is improved, and the setting difficulty of the first control part and the first current converter is reduced. The integration degree of the third control part and the second current converter is improved, and the setting difficulty of the third control part and the second current converter is reduced.

[0034] In some embodiments, a first inverter is correspondingly provided for each first battery cluster; and / or, a second inverter is correspondingly provided for each second battery cluster. In this way, the first battery clusters and the first inverters are in one-to-one correspondence, reducing the power requirement of the first inverters and enhancing the stability of the electrical energy input or output of the first battery clusters. The second battery clusters and the second inverters are in one-to-one correspondence, reducing the power requirement of the second inverters and enhancing the stability of the electrical energy input or output of the second battery clusters.

[0035] In some embodiments, each first battery cluster includes six battery devices connected in series; and / or, each second battery cluster includes six battery devices connected in series. In this way, each first inverter can achieve the electrical energy input or output of six battery devices. Multiple first inverters are respectively electrically connected to multiple first battery clusters, reducing the risk of interference between the multiple first battery clusters and improving the performance of the first storage compartment. Each second inverter can achieve the electrical energy input or output of six battery devices. Multiple second inverters are respectively electrically connected to multiple second battery clusters, reducing the risk of interference between the multiple second battery clusters and improving the performance of the second storage compartment.

[0036] In some embodiments, the maximum operating voltage of the first inverter is 1500V; and / or, the maximum operating voltage of the second inverter is 1500V. In this way, a first battery cluster is correspondingly electrically connected to a first inverter with a maximum operating voltage of 1500V, enabling a first battery cluster to be adapted to a 1500V operating voltage. A second battery cluster is correspondingly electrically connected to a second inverter with a maximum operating voltage of 1500V, enabling a second battery cluster to be adapted to a 1500V operating voltage, improving the performance of the energy storage system.

[0037] In some embodiments, the energy storage system further includes a third storage compartment. The first storage compartment and the second storage compartment are both separately arranged from the third storage compartment, and the current conversion device is arranged in the third storage compartment. By arranging the current conversion device in the third storage compartment, the risk of damage to the current conversion device can be reduced, making the use of the current conversion device safer and more reliable.

[0038] In some embodiments, the first storage compartment and the second storage compartment are both placed separately from the third storage compartment. In this way, the current conversion device can be arranged away from the first storage compartment and the second storage compartment, reducing the heat diffusion of the current conversion device to the first storage compartment and the second storage compartment, reducing the interference of the current conversion device on the battery devices, and enhancing the reliability of the energy storage system.

[0039] In some embodiments, at least a part of the thermal management module is accommodated in the first storage compartment. In this way, at least a part of the thermal management module is located above the second storage compartment, and the thermal management component can shield the second storage compartment, thereby reducing the influence of rain or sunlight exposure on the second storage compartment and improving the performance of the energy storage system.

[0040] In some embodiments, the entire thermal management module is accommodated within the first housing. In this way, the entire thermal management module is located above the second housing, enabling the thermal management module to cover the second housing and improve the performance of the second housing. The thermal management module is located within the first housing, providing more heat dissipation space for the thermal management module and enhancing its heat dissipation effect.

[0041] In some embodiments, the first housing includes a first sub-housing and a second sub-housing. The first housing has a first isolation layer that separates the first sub-housing and the second sub-housing. The first sub-housing is located above the second sub-housing. The thermal management module is accommodated in the first sub-housing, and the battery device located within the first housing is accommodated in the second sub-housing. By providing the first isolation layer, it can isolate the thermal management module and the battery device, reducing the risk of interference between the thermal management module and the battery device. The thermal management module is located above the battery device. On the one hand, the thermal management module can shield the battery device from sunlight and rain, reducing the impact of sunlight and rain on the battery device. On the other hand, the thermal management module being located in the first sub-housing allows it to have a larger heat dissipation area, improving the heat dissipation effect of the thermal management module.

[0042] In some embodiments, the dimension of the first housing in the height direction is 2700 mm - 2900 mm. In this way, the dimension of the first housing in the height direction is not equal to that of a standard container in the height direction, enabling the height of the first housing to be adjusted according to requirements, thereby enhancing the volume energy density of the first housing.

[0043] In some embodiments, the first housing includes a first sub-housing, a second sub-housing, and a third sub-housing. The first housing has a first isolation layer and a second isolation layer. The first sub-housing is located on the side of the first isolation layer facing away from the second sub-housing and the third sub-housing. The second isolation layer separates the second sub-housing and the third sub-housing. The second sub-housing and the third sub-housing are both located below the first sub-housing, and the second sub-housing and the third sub-housing are arranged along the length direction of the first housing. A part of the thermal management module is accommodated in the first sub-housing, and another part is accommodated in the third sub-housing. By separating the battery device and the thermal management module with the first isolation layer and the second isolation layer, the risk of interference between the battery device and the thermal management module can be reduced. By accommodating a part of the thermal management module in the first sub-housing and another part in the third sub-housing, the installation difficulty of the thermal management module can be reduced.

[0044] In some embodiments, the battery device includes a thermal management component. The thermal management module includes a condenser, a pumping device, a heat exchanger, a compressor, a throttling device, and a fan. The fan is used to dissipate heat from the condenser. The pumping device, the heat exchanger, and the thermal management component located in the first chamber are connected to form a first cooling circulation loop. The pumping device, the heat exchanger, and the thermal management component located in the second chamber are connected to form a second cooling circulation loop. The compressor, the condenser, the throttling device, and the heat exchanger are connected to form a refrigerant circulation loop. At least the condenser and the fan are accommodated in the first sub-chamber, and at least one of the pumping device, the compressor, the throttling device, and the heat exchanger is accommodated in the third sub-chamber. By accommodating the condenser and the fan in the first sub-chamber, the condenser and the fan are located at the top of the first chamber, which is beneficial for the fan to dissipate heat from the condenser and improve the condensation performance of the condenser.

[0045] In some embodiments, the dimension of the first chamber in the height direction is 2400 mm - 2600 mm. The dimension of the first chamber in the height direction is smaller than that of a standard container in the height direction, which can reduce the volume of the first chamber and thus improve the volume energy density of the first chamber.

[0046] In some embodiments, the first chamber includes a second sub-chamber and a third sub-chamber. The first chamber has a second isolation layer that separates the second sub-chamber and the third sub-chamber. The second sub-chamber and the third sub-chamber are arranged along the length direction of the first chamber. The battery device located in the first chamber is accommodated in the second sub-chamber, and the thermal management module is accommodated in the third sub-chamber. By providing the second isolation layer, the second isolation layer can reduce the risk of interference between the battery device and the thermal management module. By arranging the thermal management module in the third sub-chamber, on the one hand, the thermal management module is located above the second chamber, which is beneficial for the heat dissipation of the thermal management module and reduces the impact of the heat dissipation of the thermal management module on the battery device in the first chamber. On the other hand, the thermal management module and the battery device in the first sub-chamber are arranged along the length direction, which can reduce the height of the thermal management module and the maintenance difficulty of the thermal management module.

[0047] In some embodiments, the control module is accommodated in the second chamber. In this way, it is beneficial for the maintenance and operation of the control module located in the second chamber and reduces the maintenance difficulty of the control module.

[0048] In some embodiments, the second chamber includes a fourth sub-chamber and a fifth sub-chamber. The second chamber has a third isolation layer that separates the fourth sub-chamber and the fifth sub-chamber. The fourth sub-chamber and the fifth sub-chamber are arranged along the length direction of the first chamber. The battery device located in the second chamber is accommodated in the fourth sub-chamber, and the control module is accommodated in the fifth sub-chamber. By arranging the control module in the fifth sub-chamber, the risk of interference between the battery device and the control module can be reduced.

[0049] In some embodiments, the energy storage system further includes a power distribution module and a fire control module. The control module and the fire control module are both electrically connected to the power distribution module; the power distribution module and the fire control module are both accommodated in the fifth sub-compartment. By arranging the control module, the power distribution module, and the fire control module in the fifth sub-compartment, the heights of the control module, the power distribution module, and the fire control module are relatively low, which facilitates the maintenance and repair of the fire control module, the power distribution module, and the fire control module.

[0050] In some embodiments, the fire control module is located below the power distribution module. In this way, the fire control module can have a lower position, which is beneficial to the use and repair of the fire control module and improves the reliability of the energy storage system.

[0051] In some embodiments, the fire control module and the power distribution module are arranged along the width direction of the first compartment. In this way, the heights of the fire control module and the power distribution module are both relatively low, which facilitates the use and maintenance of the fire control module and the power distribution module.

[0052] In some embodiments, the dimension of the second compartment in the height direction is 2300 mm - 2500 mm. The dimension of the second compartment in the height direction is smaller than that of a standard container in the height direction, which can reduce the volume of the second compartment, thereby increasing the volume energy density of the second compartment.

[0053] In some embodiments, the energy storage system further includes a fixing member configured to connect the first compartment and the second compartment; wherein, the fixing member includes a support member, and the support member is arranged between the first compartment and the second compartment in the height direction. In this way, by providing the fixing member, the connection between the first compartment and the second compartment is made more stable.

[0054] In some embodiments, the sum of the dimension of the first compartment in the height direction, the dimension of the second compartment in the height direction, and the dimension of the support member in the height direction is greater than or equal to the dimension of a standard container in the height direction. In this way, the energy storage system can have a relatively large dimension in the height direction, which is beneficial to increasing the space of the first compartment and the second compartment in the height direction, enabling more battery devices to be arranged in the first compartment and the second compartment in the height direction, and increasing the volume energy density of the energy storage system.

[0055] In some embodiments, the dimensions of the first compartment and the second compartment in their length directions are both the same as the dimension of a standard container in the length direction, and the dimensions of the first compartment and the second compartment in their width directions are both the same as the dimension of a standard container in the width direction. In this way, the floor areas of the first compartment and the second compartment are the same as that of a standard container, which can reduce the transportation difficulty of the first compartment and the second compartment and lower the transportation cost.

[0056] In some embodiments, the total energy of the energy storage system is 9 MWh - 11 MWh. In this way, the energy storage system can have a relatively high energy, improving the performance of the energy storage system.

[0057] In some embodiments, the total weight of the first bin and the components disposed within the first bin is less than or equal to 36 tons; and / or, the total weight of the second bin and the components disposed within the second bin is less than or equal to 36 tons. In this way, the weights of both the first bin and the second bin do not exceed 36 tons, facilitating the transportation of the first bin and the second bin and reducing the transportation cost.

[0058] In some embodiments, the standard container is a 20-foot standard container. In this way, the first bin and the second bin can have relatively large sizes to accommodate the battery device, improving the practicality of the first bin and the second bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0060] Figure 1 Structural schematic diagram of an energy storage system provided by some embodiments of the present application;

[0061] Figure 2 Structural schematic diagram of a battery device provided by some embodiments of the present application;

[0062] Figure 3 Structural schematic diagram of a battery device provided by some other embodiments of the present application;

[0063] Figure 4 Structural schematic diagram of a battery cell provided by some embodiments of the present application;

[0064] Figure 5 Structural schematic diagram of an energy storage system provided by some other embodiments of the present application;

[0065] Figure 6 Structural schematic diagram of an energy storage system provided by some further embodiments of the present application;

[0066] Figure 7 Structural schematic diagram of an energy storage system provided by some other embodiments of the present application;

[0067] Figure 8 Frame schematic diagram of a control module, a first sub-control module, a second sub-control module, and a battery device in an energy storage system provided by some embodiments of the present application;

[0068] Figure 9 Schematic framework diagram of a current conversion device, a first sub-control module, a second sub-control module, and a battery device in an energy storage system provided for some embodiments of the present application;

[0069] Figure 10 Schematic structure diagram of an energy storage system provided for some embodiments of the present application (the current conversion device is located in the third bin);

[0070] Figure 11 Schematic structure diagram of an energy storage system provided for some embodiments of the present application (the thermal management module is accommodated in the first sub-bin and the third sub-bin);

[0071] Figure 12 Schematic structure diagram of the thermal management module provided for some embodiments of the present application;

[0072] Figure 13 Schematic structure diagram of an energy storage system provided for some embodiments of the present application (the thermal management module is accommodated in the third sub-bin);

[0073] Figure 14 Schematic structure diagram of an energy storage system provided for some embodiments of the present application (the control module is accommodated in the fifth sub-bin);

[0074] Figure 15 Assembly drawing of the second bin and the control module provided for some embodiments of the present application;

[0075] Figure 16 Assembly drawing of the second bin and the control module provided for some other embodiments of the present application;

[0076] Figure 17 Assembly drawing of the first bin and the second bin provided for some embodiments of the present application;

[0077] Figure 18 Schematic structure diagram of the fixing member provided for some embodiments of the present application.

[0078] Icons: 10 - battery device; 1a - battery cell assembly; 1 - battery cell; 11 - housing; 111 - first wall portion; 112 - second wall portion; 12 - electrode terminal; 2 - box body; 21 - first box body; 22 - second box body; 3 - thermal management component; 4 - pressure relief mechanism;

[0079] 20 - first bin; 201 - first sub-bin; 202 - second sub-bin; 203 - third sub-bin; 204 - first isolation layer; 205 - second isolation layer; 30 - second bin; 301 - fourth sub-bin; 302 - fifth sub-bin; 303 - third isolation layer;

[0080] 40 - Control module; 401 - Power distribution module; 402 - Fire control module; 403 - First sub - control module; 4031 - First control part; 4032 - Second control part; 404 - Second sub - control module; 4041 - Third control part; 4042 - Fourth control part;

[0081] 50 - Thermal management module; 501 - Condenser; 502 - Pumping device; 503 - Heat exchanger; 504 - Compressor; 505 - Throttling device; 506 - Fan; 507 - First cooling circulation loop; 508 - Second cooling circulation loop; 509 - Refrigerant circulation loop;

[0082] 60 - Converter device; 601 - First converter; 602 - Second converter;

[0083] 70 - Fixing part; 701 - Support part; 7011 - Through hole; 7012 - Accommodation cavity; 702 - Locking accessory; 7021 - First locking part; 7022 - Second locking part; 7023 - Connection part; 703 - Driving arm; 100 - Energy storage system; X - Length direction; Y - Width direction; Z - Height direction. Detailed implementation manners

[0084] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the protection scope of this application.

[0085] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above - mentioned drawings are intended to cover non - exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above - mentioned drawings are used to distinguish different objects and are not used to describe a specific order or primary - secondary relationship.

[0086] Referring to "embodiments" in this application means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0087] In this application, the term "and / or" is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0088] In the embodiments of this application, the same reference numerals represent the same components. And for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings in the embodiments of this application, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0089] The term "a plurality of" as used in this application refers to two or more (including two).

[0090] 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, a magnesium-ion battery cell, etc., and the embodiments of this application do not limit this. The battery cell may be in a cylindrical shape, a flat shape, a cuboid shape, or other shapes, and the embodiments of this application also do not limit this.

[0091] The battery mentioned in the embodiments of this application may include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or in a hybrid connection through a busbar component.

[0092] In some embodiments, the battery may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0093] In some embodiments, the battery may be a battery pack, and the battery pack includes a housing box and battery cells, and the battery cells or battery modules are accommodated in the housing box.

[0094] In some embodiments, the energy storage system includes an energy storage container, an energy storage cabinet, etc.

[0095] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can play a role in preventing short circuit between the positive and negative electrodes, and at the same time allow active ions to pass through.

[0096] Optionally, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0097] Optionally, the electrode assembly is a laminated structure.

[0098] Optionally, the shape of the electrode assembly can be cylindrical, flat, prismatic, or the like.

[0099] In some embodiments, the energy storage system may include a battery device and a housing, and the battery device is accommodated in the housing. The battery device includes a plurality of battery cells.

[0100] In some embodiments, the energy storage system may further include a current conversion device electrically connected to the battery device to convert the DC electrical energy of the battery device into AC electrical energy for facilitating the power output of the battery device, or to convert the AC electrical energy of an external circuit into DC electrical energy for facilitating the power storage of the battery device.

[0101] In some embodiments, the energy storage system may further include a control module for electrically controlling the battery device.

[0102] In some embodiments, the energy storage system may further include a thermal management module for managing the temperature of the battery device.

[0103] The energy storage system can be an energy storage power station, a wind power generation system, a solar power generation system, a mobile power system, or a temporary power supply system, etc. The energy storage power station can store electrical energy during low electricity consumption periods and supply electrical energy to relevant users or electrical equipment during high electricity consumption periods. After the wind energy collected by the wind turbine generator of the wind power generation system is converted into electrical energy, it is stored by the energy storage system. The solar power generation system can convert solar energy into electrical energy and store it by the energy storage system, and supply it to users at an appropriate time. The mobile power system can supply power to relevant electrical equipment in places where the grid power supply system cannot reach, such as remote mountainous areas and remote wild areas. The temporary power supply system can supply power to users in case of insufficient power supply.

[0104] Power stations have increasingly higher requirements for the volumetric energy density of energy storage systems. Since energy storage systems usually need to be provided with a thermal management module and a control module to control the temperature and electrical properties of the battery device within the energy storage system. However, the thermal management module and the control module will occupy the volume of the energy storage system, restricting the installation space for the battery device. Therefore, when considering the volume of the energy storage system, the arrangement method of the battery cells becomes particularly important. An improper arrangement method of the battery cells is likely to cause waste of space in the battery device, affecting the volumetric energy density of the battery device and thus the volumetric energy density of the energy storage system. Therefore, there is a contradiction between the improvement of the volumetric energy density and the arrangement of the battery cells.

[0105] In view of this, in order to improve the volumetric energy density of the energy storage system, an embodiment of the present application provides an energy storage system, including a first bin, a second bin, a control module, a thermal management module, a current conversion device, and a plurality of battery devices. Battery devices are accommodated in both the first bin and the second bin. The first bin and the second bin are stacked in the height direction, with the first bin located above the second bin. At least one of the dimension of the first bin in the height direction and the dimension of the second bin in the height direction is smaller than the dimension of a standard container in the height direction. The control module is used to perform electrical control on the plurality of battery devices in the first bin and the second bin. The control module is accommodated in one of the first bin and the second bin, or a part of the control module is accommodated in the first bin and another part is accommodated in the second bin. The thermal management module is used to manage the temperature of the plurality of battery devices in the first bin and the second bin. The thermal management module is accommodated in one of the first bin and the second bin, or a part of the thermal management module is accommodated in the first bin and another part is accommodated in the second bin. The current conversion device is electrically connected to the plurality of battery devices in the first bin and the second bin, and the current conversion device is located outside the first bin and the second bin. Wherein, each battery device includes a plurality of battery cells, and each battery cell includes a housing and electrode terminals. Both the width and the height of the housing are smaller than the length of the housing. The plurality of battery cells are arranged in the width direction of the housing to form a battery cell assembly. Along the length direction of the housing, the electrode terminals are provided at at least one end of the housing.

[0106] In such an energy storage system, the battery devices, the control module, and the thermal management module are accommodated in the first bin and the second bin. On the one hand, it can reduce the space waste of the energy storage system. On the other hand, it can improve the integration degree of the energy storage system and enhance the stability of the energy storage system. By arranging the current conversion device outside the first bin and the second bin, the risk of interference between the current converter and the battery devices can be reduced, and the space occupied by the first bin and the second bin can be reduced, making it more convenient to arrange the battery devices in the first bin and the second bin. Both the width and the height of the housing of the battery cell are smaller than the length of the housing. The plurality of battery cells are arranged in the width direction of the housing to form a battery cell assembly, and the electrode terminals are provided at at least one end of the housing along the length direction, which can enable the plurality of electrode terminals of the battery cell assembly to occupy the space of the battery cell assembly in the battery device along the length direction of the housing, reduce the space waste along the width direction of the battery cell, thereby reducing the space waste in the battery device, improving the volumetric energy density of the battery device, and further improving the volumetric energy density of the energy storage system.

[0107] The energy storage system will be described below with reference to the accompanying drawings.

[0108] Please refer to Figures 1 - 3 , Figure 1 which is a schematic structural diagram of an energy storage system 100 provided by some embodiments of the present application; Figure 2It is a schematic structural diagram of the battery device 10 provided by some embodiments of the present application; Figure 3 It is a schematic structural diagram of the battery device 10 provided by some other embodiments of the present application. An energy storage system 100 provided by an embodiment of the present application includes a first bin 20, a second bin 30, a control module 40, a thermal management module 50, a current conversion device 60, and a plurality of battery devices 10. Battery devices 10 are accommodated in both the first bin 20 and the second bin 30. The first bin 20 and the second bin 30 are stacked along the height direction Z, the first bin 20 is located above the second bin 30, and at least one of the dimension of the first bin 20 along the height direction Z and the dimension of the second bin 30 along the height direction Z is smaller than the dimension of a standard container along the height direction Z. The control module 40 is used for electrically controlling the plurality of battery devices 10 in the first bin 20 and the second bin 30. The control module 40 is accommodated in one of the first bin 20 and the second bin 30, or a part of the control module 40 is accommodated in the first bin 20 and another part is accommodated in the second bin 30. The thermal management module 50 is used for managing the temperature of the plurality of battery devices 10 in the first bin 20 and the second bin 30. The thermal management module 50 is accommodated in one of the first bin 20 and the second bin 30, or a part of the thermal management module 50 is accommodated in the first bin 20 and another part is accommodated in the second bin 30. The current conversion device 60 is electrically connected to the plurality of battery devices 10 in the first bin 20 and the second bin 30, and the current conversion device 60 is located outside the first bin 20 and the second bin 30. Wherein, each battery device 10 includes a plurality of battery cells 1, each battery cell 1 includes a housing 11 and electrode terminals 12, the width and height of the housing 11 are both smaller than the length of the housing 11, and the plurality of battery cells 1 are arranged along the width direction of the housing 11 to form a battery cell assembly 1a, and along the length direction of the housing 11, the electrode terminals 12 are arranged at at least one end of the housing 11.

[0109] The battery device 10 may include a box body 2 and battery cells 1, and the box body 2 is used for accommodating the battery cells 1. Wherein, a sealed space for accommodating the battery cells 1 is formed inside the box body 2. The box body 2 may adopt various structures. In some embodiments, the box body 2 may include a first box body 21 and a second box body 22, and the first box body 21 and the second box body 22 are buckled with each other. The first box body 21 and the second box body 22 may be various shapes, for example, a cuboid. The first box body 21 may be a hollow structure with one side open, and the second box body 22 may also be a hollow structure with one side open. The open side of the second box body 22 and the open side of the first box body 21 are buckled with each other, then the box body 2 with a closed space is formed. It may also be that the first box body 21 is a hollow structure with one side open, the second box body 22 is a plate-like structure, and the second box body 22 is buckled on the open side of the first box body 21, then the box body 2 with an accommodation space is formed.

[0110] In the battery device 10, there are multiple battery cells 1. The multiple battery cells 1 can be connected in series, parallel, or in a combined series-parallel connection. A combined series-parallel connection means that there are both series and parallel connections among the multiple battery cells 1. It is possible that multiple battery cells 1 are first connected in series, parallel, or in a combined series-parallel connection to form a battery cell assembly 1a, and then multiple battery cell assemblies 1a are connected in series, parallel, or in a combined series-parallel connection to form an entirety, which is accommodated in the box body 2. It is also possible that all the battery cells 1 are directly connected in series, parallel, or in a combined series-parallel connection together, and then the entirety formed by all the battery cells 1 is accommodated in the box body 2. Multiple battery devices 10 are accommodated in the first compartment 20. Multiple battery devices 10 are accommodated in the second compartment 30. The number of battery devices 10 in the first compartment 20 and the number of battery devices 10 in the second compartment 30 can be the same or different.

[0111] The first compartment 20 and the second compartment 30 are stacked along the height direction Z, and the first compartment 20 is located above the second compartment 30 to enable the second compartment 30 to support the first compartment 20. The length direction X, width direction Y, and height direction Z of the first compartment 20 are respectively consistent with the length direction X, width direction Y, and height direction Z of the second compartment 30.

[0112] The dimension of the first compartment 20 along the height direction Z and the dimension of a standard container along the height direction Z can be equal; it is also possible that the dimension of the first compartment 20 along the height direction Z is smaller than the dimension of the standard container along the height direction Z; it is also possible that the dimension of the first compartment 20 along the height direction Z is larger than the dimension of the standard container along the height direction Z. The dimension of the second compartment 30 along the height direction Z and the dimension of the standard container along the height direction Z can be equal; it is also possible that the dimension of the second compartment 30 along the height direction Z is smaller than the dimension of the standard container along the height direction Z; it is also possible that the dimension of the second compartment 30 along the height direction Z is larger than the dimension of the standard container along the height direction Z. Among them, taking a 20-foot standard container as an example, the dimension of the standard container along the height direction Z can be 2896 mm, and the dimension of at least one of the first compartment 20 and the second compartment 30 along the height direction Z is smaller than 2896 mm.

[0113] The dimensions of the first compartment 20 along the length direction X and along the width direction Y and the dimensions of the standard container along the length direction X and along the width direction Y can be equal or not equal. The dimensions of the second compartment 30 along the length direction X and along the width direction Y and the dimensions of the standard container along the length direction X and along the width direction Y can be equal or not equal.

[0114] Optionally, for containers of various sizes, the dimensions within ±5% of their dimensions can be regarded as the dimensions within the tolerance range. It can be understood that the first compartment 20 and the second compartment 30 can also be referred to as containers.

[0115] The standard container can be the size of the standard container (GB / T1413-2023) during transportation, such as 20-foot, 30-foot, 40-foot or 45-foot, which meets the corresponding standards and has corresponding dimensions for its length, width and height respectively.

[0116] The 20-foot container can include: the dimension in the length direction X is 6058mm, with a tolerance of 0mm - 6mm; the dimension in the width direction Y is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction Z is 2896mm, 2591mm or not greater than 2438mm; the tolerance is 0mm - 5mm.

[0117] The 30-foot container can include: the dimension in the length direction X is 9125mm, with a tolerance of 0mm - 10mm; the dimension in the second direction is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction Z is 2896mm, 2591mm or not greater than 2438mm; the tolerance is 0mm - 5mm.

[0118] The 40-foot container can include: the dimension in the length direction X is 12192mm, with a tolerance of 0mm - 10mm; the dimension in the width direction Y is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction Z is 2896mm, 2591mm or not greater than 2438mm; the tolerance is 0mm - 5mm.

[0119] The 45-foot container can include: the dimension in the length direction X is 13716mm, with a tolerance of 0mm - 10mm; the dimension in the width direction Y is 2438mm, with a tolerance of 0mm - 5mm; and the dimension in the height direction Z is 2591mm or 2896mm; the tolerance is 0mm - 5mm.

[0120] It is possible that the entire control module 40 is housed within the first housing 20; it is also possible that the entire control module 40 is housed within the second housing 30; or it is possible that the control module 40 includes multiple control units, with a part of the multiple control units housed within the first housing 20 and another part housed within the second housing 30, and the multiple control units jointly perform electrical control on the battery devices 10 within the first housing 20 and the second housing 30. Electrical control refers to low-voltage communication control. For example, the first housing 20 is provided with a first sub-control module 403, and the first sub-control module 403 can be used to control the on / off of the electrical connection between the converter device 60 and the battery device 10 located within the first housing 20. The second housing 30 is provided with a second sub-control module 404, and the second sub-control module 404 can be used to control the on / off of the electrical connection between the converter device 60 and the battery device 10 located within the second housing 30. Both the first sub-control module 403 and the second sub-control module 404 are communicatively connected to the control module 40 to achieve the electrical control of the multiple battery devices 10 within the first housing 20 and the second housing 30 by the control module 40.

[0121] The thermal management module 50 can manage the temperatures of all the battery devices 10 within the first housing 20 and the second housing 30, reducing the risk of temperature runaway of the battery devices 10. It is possible that the entire thermal management module 50 is housed within the first housing 20; it is also possible that the entire thermal management module 50 is housed within the second housing 30; or it is possible that a part of the thermal management module 50 is housed within the first housing 20 and another part is housed within the second housing 30. For example, the thermal management module 50 includes multiple thermal management units. It is possible that all the thermal management units are housed within the first housing 20; it is also possible that all the thermal management units are housed within the second housing 30; or it is possible that a part of the multiple thermal management units is housed within the first housing 20 and another part is housed within the second housing 30, and the multiple thermal management units jointly manage the temperatures of the multiple battery devices 10 within the first housing 20 and the second housing 30.

[0122] As an example, the thermal management module 50 can be a liquid cooling unit, and the liquid cooling unit includes multiple thermal management units such as a pumping device 502 and a heat exchanger 503. The multiple thermal management units can be connected through pipelines, and the liquid cooling unit transports a cooling medium to the thermal management components 3 of each battery device 10 through the pipelines.

[0123] The converter device 60 is a device connecting external equipment and the battery device 10, and the external equipment can be a power grid, an electrical equipment, etc.

[0124] When the energy storage system 100 is in the charging state, the converter device 60 acts as a rectifier to convert the alternating current on the AC side into direct current and store it in the battery device 10. When the energy storage system 100 is in the discharging state, the converter device 60 acts as an inverter to convert the electrical energy stored in the battery device 10 from direct current on the DC side into alternating current and deliver it to external devices.

[0125] In the energy storage system 100, the converter device 60 may include a plurality of converters. Each converter may be correspondingly provided with one battery device 10, or may be correspondingly provided with a plurality of battery devices 10. In an embodiment where one converter corresponds to a plurality of battery devices 10, the number of battery devices 10 may be two, three, four, five, six, seven, eight, nine or more. The converter device 60 may be hung outside the first bin 20; or the converter device 60 may be hung outside the second bin 30; or the converter device 60 may be placed separately from the first bin 20 and the second bin 30.

[0126] The battery cell 1 includes a housing 11 and electrode terminals 12. Both the width and height of the housing 11 are smaller than the length of the housing 11, so that the housing 11 is in the shape of a cuboid. Along the length direction of the housing 11, the housing 11 has a first wall portion 111 and a second wall portion 112 which are oppositely arranged. There may be two electrode terminals 12 with opposite polarities. Both of the two electrode terminals 12 may be arranged on the first wall portion 111; or the two electrode terminals 12 may be respectively arranged on the first wall portion 111 and the second wall portion 112. Among them, the battery cell 1 may be a short blade battery cell 1.

[0127] Multiple battery cells 1 of the battery device 10 may only form one battery cell assembly 1a, and all the battery cells 1 of the battery device 10 are arranged along the width direction of the housing 11. Or multiple battery cells 1 of the battery device 10 may form multiple battery cell assemblies 1a, and multiple battery cells 1 of each battery cell assembly 1a are arranged along the width direction of the housing 11. In an embodiment where the battery device 10 includes multiple battery cell assemblies 1a, the multiple battery cell assemblies 1a may be arranged along the length direction X of the first bin 20; or along the height direction Z of the first bin 20; or may be arranged in the width direction Y of the first bin 20.

[0128] A plurality of battery cells 1 are arranged along the width direction of the housing 11 to form a battery cell assembly 1a. The electrode terminals 12 are provided at at least one end of the housing 11 such that the electrode terminals 12 are not provided between two adjacent housings 11 in the battery cell assembly 1a, thereby making the arrangement of the housings 11 of the battery cell assembly 1a more compact along the width direction Y. The electrode terminals 12 are provided at at least one end of the housing 11 along the length direction X, such that a plurality of electrode terminals 12 can jointly occupy the space on one side of the plurality of housings 11 of the battery cell assembly 1a along the length direction X, reducing the waste of internal space of the battery device 10.

[0129] The height of at least one of the first chamber 20 and the second chamber 30 is less than that of a standard container, which can reduce the height of the first chamber 20 and the second chamber 30, thereby reducing the volume of the first chamber 20 and the second chamber 30, and being beneficial to the improvement of the volume energy density of the first chamber 20 and the second chamber 30.

[0130] In the embodiment of the present application, the battery device 10, the control module 40, and the thermal management module 50 are accommodated in the first chamber 20 and the second chamber 30. On the one hand, it can reduce the waste of space of the energy storage system 100. On the other hand, it can improve the integration degree of the energy storage system 100 and enhance the stability of the energy storage system 100. The converter device 60 is arranged outside the first chamber 20 and the second chamber 30, which can reduce the risk of interference between the converter and the battery device 10, and can reduce the space occupied by the first chamber 20 and the second chamber 30, making it more convenient to arrange the battery device 10 in the first chamber 20 and the second chamber 30. The width and height of the housing 11 of the battery cell 1 are both smaller than the length of the housing 11. A plurality of battery cells 1 are arranged along the width direction of the housing 11 to form a battery cell assembly 1a, and the electrode terminals 12 are provided at at least one end of the housing 11 along the length direction X, which can enable a plurality of electrode terminals 12 of the battery cell assembly 1a to occupy the space of the battery cell assembly 1a in the battery device 10 along the length direction X of the housing 11, reducing the waste of space of the battery cell 1 along the width direction Y, thereby reducing the waste of space in the battery device 10, improving the volume energy density of the battery device 10, and further improving the volume energy density of the energy storage system 100.

[0131] In some embodiments, when the battery device 10 is accommodated in the first chamber 20 and the second chamber 30, the length direction X of the battery cell 1 in the battery device 10 can be consistent with the length direction X of the first chamber 20; the height direction Z of the battery cell 1 in the battery device 10 can be consistent with the height direction Z of the first chamber 20; the width direction Y of the battery cell 1 in the battery device 10 can be consistent with the width direction Y of the first chamber 20.

[0132] In some embodiments, please continue to refer to Figure 3。The battery device 10 includes two battery cell assemblies 1a arranged along the length direction X of the first housing 20, and each battery cell assembly 1a includes a plurality of battery cells 1 arranged along the width direction Y of the first housing 20.

[0133] The two battery cell assemblies 1a can be connected in series or in parallel. The number of battery cells 1 in the two battery cell assemblies 1a can be equal or unequal.

[0134] In this embodiment, the two battery cell assemblies 1a are arranged along the length direction X of the first housing 20, and the length direction X of the battery cells 1 in the battery cell assembly 1a extends along the length direction X of the first housing 20, which can reduce the influence of the size of the battery cells 1 in the height direction Z on the size of the battery device 10, so that the battery device 10 can have a smaller size in the height direction Z, and the first housing 20 and the second housing 30 can accommodate more battery devices 10 in the height direction Z, improving the volumetric energy density of the energy storage system 100.

[0135] In some embodiments, the electrode terminals 12 of the battery cells 1 in one battery cell assembly 1a are arranged back to back with the electrode terminals 12 of the battery cells 1 in the other battery cell assembly 1a.

[0136] The first wall portions 111 of the outer shells 11 of one battery cell assembly 1a and the first wall portions 111 of the outer shells 11 of the other battery cell assembly 1a are arranged back to back, and the electrode terminals 12 of each battery cell 1 are arranged on the first wall portion 111 of the outer shell 11 of the battery cell 1 to realize the back-to-back arrangement of the electrode terminals 12 of the two battery cell assemblies 1a.

[0137] In this embodiment, the back-to-back arrangement of the electrode terminals 12 of the two battery cell assemblies 1a can reduce the risk of interference between the electrode terminals 12 of the two battery cell assemblies 1a.

[0138] In some embodiments, please continue to refer to Figure 4 。The battery cell 1 includes a pressure relief mechanism 4 and two electrode terminals 12 with opposite polarities. The outer shell 11 includes a first wall portion 111 and a second wall portion 112 arranged opposite to each other along the length direction X. The two electrode terminals 12 are both arranged on the first wall portion 111, and the pressure relief mechanism 4 is arranged on the second wall portion 112.

[0139] The pressure relief mechanism 4 refers to an element or component that is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 1 reaches a predetermined threshold. This threshold design varies according to different design requirements. The threshold may depend on one or several of the materials of the positive electrode plate, negative electrode plate, electrolyte, and separator membrane in the battery cell 1. The pressure relief mechanism 4 can take forms such as an explosion-proof valve, explosion-proof sheet, gas valve, pressure relief valve, or safety valve, and can specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery cell 1 reaches a predetermined threshold, the pressure relief mechanism 4 performs an action or a weak structure provided in the pressure relief mechanism 4 is damaged, thereby forming an opening or channel for the internal pressure or temperature to be released.

[0140] As mentioned in this application, "actuation" means that the pressure relief mechanism 4 generates an action or is activated to a certain state, so that the internal pressure and temperature of the battery cell 1 can be released. The actions generated by the pressure relief mechanism 4 may include but are not limited to: at least a part of the pressure relief mechanism 4 breaks, shatters, is torn, or opens, etc. When the pressure relief mechanism 4 is actuated, the high-temperature and high-pressure substances inside the battery cell 1 will be discharged outward from the actuated part as emissions. In this way, the battery cell 1 can be pressure-relieved and temperature-relieved under a controllable pressure or temperature, thus avoiding potential more serious accidents.

[0141] In this embodiment, the electrode terminal 12 of the battery cell 1 is arranged away from the pressure relief mechanism 4, reducing the risk of interference between the pressure relief mechanism 4 and the electrode terminal 12 and improving the stability of the battery cell 1.

[0142] In some embodiments, the pressure relief mechanisms 4 of the first battery cell assembly 1a are arranged opposite to the pressure relief mechanisms 4 of another battery cell assembly 1a. The two battery cell assemblies 1a of the battery device 10 are spaced apart along the length direction X to form an exhaust passage between the two battery cell assemblies 1a, which is beneficial for the pressure relief mechanism 4 to relieve pressure and exhaust.

[0143] In some embodiments, the two battery cell assemblies 1a are connected in series, and each battery cell assembly 1a includes 33 to 36 battery cells 1, and the 33 to 36 battery cells 1 are connected in series.

[0144] The two battery cell assemblies 1a are connected in series so that the number of battery cells 1 connected in series in the battery device 10 is 66 to 72.

[0145] The number of battery cells 1 connected in series in each battery cell assembly 1a can be 33, 34, 35, or 36.

[0146] In this embodiment, the battery device 10 can have a relatively large voltage, which is beneficial for adjusting the output voltage and input voltage of the energy storage system 100.

[0147] In some embodiments, each battery cell assembly 1a includes 34 battery cells 1, or each battery cell assembly 1a includes 35 battery cells 1.

[0148] When each battery cell assembly 1a includes 34 battery cells 1, the number of battery cells 1 connected in series in the battery device 10 is 68. Taking the battery cell 1 as a lithium iron phosphate battery cell 1 and the maximum voltage of the battery cell 1 being 3.61V as an example, the maximum voltage of the battery device 10 is 245.48V.

[0149] When each battery cell assembly 1a includes 35 battery cells 1, the number of battery cells 1 connected in series in the battery device 10 is 70. Taking the battery cell 1 as a lithium iron phosphate battery cell 1 and the maximum voltage of the battery cell 1 being 3.61V as an example, the maximum voltage of the battery device 10 is 252.7V.

[0150] In this embodiment, when there are 34 or 35 battery cells 1 connected in series in the battery cell assembly 1a, the battery device 10 includes 68 battery cells 1 connected in series, which increases the input or output voltage of the battery device 10.

[0151] In some embodiments, the battery cell includes an electrode assembly, and the electrode assembly is a laminated electrode assembly.

[0152] The laminated electrode assembly includes a positive electrode tab and a negative electrode tab with opposite polarities. The positive electrode tab and the negative electrode tab are stacked to form the laminated electrode assembly. The two electrode terminals 12 are respectively a positive electrode terminal 12 and a negative electrode terminal 12. The positive electrode terminal 12 is connected to the positive electrode tab, and the negative electrode terminal 12 is connected to the negative electrode tab.

[0153] In this embodiment, the energy density of the battery cell is relatively high, which helps to increase the volumetric energy density of the energy storage system.

[0154] In some embodiments, please refer to Figure 4 , Figure 4 is a schematic structural diagram of the battery cell 1 provided in some embodiments of the present application. The dimension of the outer shell 11 along the length direction X of the first cavity 20 is 465mm - 525mm.

[0155] The dimension L of the outer shell 11 in the length direction X can be a point value of any one of 465mm, 466mm, 467mm, 468mm, 469mm, 470mm, 471mm, 472mm, 473mm, 474mm, 475mm, 476mm, 477mm, 478mm, 479mm, 480mm, 481mm, 482mm, 483mm, 484mm, 485mm, 486mm, 487mm, 488mm, 489mm, 490mm, 491mm, 492mm, 493mm, 494mm, 495mm, 496mm, 497mm, 498mm, 499mm, 500mm, 501mm, 502mm, 503mm, 504mm, 505mm, 506mm, 507mm, 508mm, 509mm, 510mm, 511mm, 512mm, 513mm, 514mm, 515mm, 516mm, 517mm, 518mm, 519mm, 520mm, 521mm, 522mm, 523mm, 524mm, 525mm or a point value between any two of them.

[0156] In some embodiments, the dimension in the width direction Y of the first bin 20 is 49mm - 60mm.

[0157] The dimension K of the outer shell 11 in the width direction Y can be a point value of any one of 49mm, 49.5mm, 50mm, 50.5mm, 51mm, 51.5mm, 52mm, 52.5mm, 53mm, 53.5mm, 54mm, 54.4mm, 54.5mm, 55mm, 55.5mm, 56mm, 56.5mm, 57mm, 57.5mm, 58mm, 58.5mm, 59mm, 59.5mm, 60mm or a point value between any two of them.

[0158] In some embodiments, the dimension in the height direction Z of the first bin 20 is 163mm - 184mm.

[0159] The dimension H of the outer shell 11 in the height direction Z can be a point value of any one of 163mm, 164mm, 165mm, 166mm, 167mm, 168mm, 169mm, 170mm, 171mm, 172mm, 173mm, 173.5mm, 174mm, 175mm, 176mm, 177mm, 178mm, 179mm, 180mm, 181mm, 182mm, 183mm, 184mm or a point value between any two of them.

[0160] In some embodiments, the dimensions of the outer shell 11 along the length direction X of the first bin 20 are 465 mm - 525 mm, the dimensions along the width direction Y of the first bin 20 are 49 mm - 60 mm, and the dimensions along the height direction Z of the first bin 20 are 163 mm - 184 mm.

[0161] Exemplarily, the dimension of the outer shell 11 along the length direction X is 500 mm, the dimension along the width direction Y is 54.4 mm, and the dimension along the height direction Z is 173.5 mm.

[0162] In this embodiment, both the width and height of the battery cell 1 are smaller than the length. When the length of a single battery cell 1 extends along the length direction X of the first bin 20, the height space of the battery device 10 occupied by a single battery cell 1 can be reduced. Moreover, the electrode terminal 12 is disposed at at least one end of the battery cell 1 along the length direction X, and the height of the battery device 10 can be reduced with reference to the height of the battery cell 1, thereby reducing the space occupied by the battery device 10 along the height direction Z, improving the space utilization rate of the first bin 20 and the second bin 30 along the height direction Z, making the battery cells 1 arranged along the length direction X in the first bin 20 and the second bin 30 more compact, and thus more battery cells 1 can be accommodated in the first bin 20 and the second bin 30, improving the volumetric energy density of the energy storage system 100.

[0163] In some embodiments, the electrode terminal 12 is disposed at at least one end of the outer shell 11 along the length direction X of the first bin 20.

[0164] Along the length direction X of the first housing 20, the electrode terminals 12 can be arranged at the same end of the housing 11, or the electrode terminals 12 can be arranged at opposite ends of the housing 11. The length direction of the battery cell 1 can extend along the length direction X of the first housing 20. It is not required that the length of the battery cell 1 is exactly parallel to the length direction X of the first housing 20, and it can be approximately parallel. To achieve electrical connection between the battery cells 1, the electrode terminals 12 of multiple battery cells 1 can be connected through a busbar component (not shown in the figure). The busbar component and the electrode terminals 12 occupy a fixed size inside the battery device 10. When this fixed size is the size in the height direction Z (the electrode terminals 12 are arranged at at least one end of the housing 11 along the height direction Z), the space volume occupied by the busbar component and the electrode terminals 12 is the product of the size in the length direction X and the size in the width direction Y of the battery device 10 multiplied by the above fixed size; when this fixed size is the size in the length direction X (the electrode terminals 12 are arranged at at least one end of the housing 11 along the length direction X), the space volume occupied by the busbar component and the electrode terminals 12 is the product of the size in the height direction Z and the size in the width direction Y of the battery device 10 multiplied by the above fixed size. Thus, since the size in the length direction X of the battery device 10 is greater than the size in the height direction Z of the battery device 10, arranging the electrode terminals 12 at at least one end of the housing 11 along the length direction X can reduce the space waste of the battery device 10. Such a battery device 10 is accommodated in the first housing 20 and the second housing 30, making the length direction X and the height direction Z of the battery device 10 consistent with the length direction X and the height direction Z of the first housing 20, which can reduce the space waste of the first housing 20. Therefore, by setting the length direction of the housing 11 perpendicular to the height direction Z of the first housing 20, the battery cell 1 can occupy a smaller height space in the first housing 20 or the second housing 30, so that a battery device 10 with a smaller height can be arranged in the first housing 20 or the second housing 30, and more battery devices 10 can be accommodated in the first housing 20 and the second housing 30. The volume energy density of the first housing 20 and the second housing 30 is increased.

[0165] Both the first housing 20 and the second housing 30 are cabinet structures with a height and width smaller than the length. Compared with arranging components in the height direction Z of the first housing 20 and the second housing 30, it is relatively easier to arrange components in the length direction X of the first housing 20 and the second housing 30. Therefore, reducing the space occupied by the battery device 10 in the height direction Z can make the internal space of the first housing 20 and the second housing 30 more compact, and more battery devices 10 can be accommodated, improving the volume energy density of the energy storage system 100.

[0166] In this embodiment, the electrode terminals 12 are disposed at at least one end of the outer shell 11 along the length direction X of the first housing 20, which can reduce the space occupied by the battery cell 1 along the height direction Z of the first housing 20, so as to set a battery device 10 with a smaller height dimension to adapt to the installation of the battery cell 1, and can reduce the height space occupied by the battery device 10 in the first housing 20 or the second housing 30, which is beneficial to accommodating more battery devices 10 in the first housing 20 and the second housing 30 and improving the volumetric energy density of the energy storage system 100.

[0167] In some embodiments, the number of battery devices 10 in the first housing 20 is equal to the number of battery devices 10 in the second housing 30.

[0168] The arrangement of the battery devices 10 in the first housing 20 and the arrangement of the battery devices 10 in the second housing 30 may be the same or different.

[0169] In this embodiment, the number of battery devices 10 in the first housing 20 is equal to the number of battery devices 10 in the second housing 30, and the total energy of the first housing 20 and the second housing 30 after accommodating the battery devices 10 is equal, which improves the compatibility of the first housing 20 and the second housing 30.

[0170] In some embodiments, the number of battery devices 10 in the first housing 20 is 36.

[0171] The battery devices 10 in the first housing 20 may be arranged in 6 rows and 6 columns, or in 9 rows and 4 columns, or in 12 rows and 3 columns.

[0172] In some embodiments, the number of battery devices 10 in the second housing 30 is 36.

[0173] The battery devices 10 in the second housing 30 may be arranged in 6 rows and 6 columns, or in 9 rows and 4 columns, or in 12 rows and 3 columns.

[0174] In some embodiments, the number of battery devices 10 in both the first housing 20 and the second housing 30 is 36.

[0175] The number of battery devices 10 in the first housing 20 and the number of battery devices 10 in the second housing 30 are both 36. The arrangement of the battery devices 10 in the first housing 20 and the arrangement of the battery devices 10 in the second housing 30 may be the same or different.

[0176] In this embodiment, it is convenient for the arrangement of the battery devices 10 in the first housing 20 or the second housing 30, and improves the compatibility of the first housing 20 and the second housing 30.

[0177] In some embodiments, please refer toFigure 5 , Figure 5 This is a schematic structural diagram of the energy storage system 100 provided by some other embodiments of the present application. A plurality of battery devices 10 located in the first compartment 20 are arranged in 9 rows and 4 columns, and a plurality of battery devices 10 located in the second compartment 30 are arranged in 9 rows and 4 columns. Each row of battery devices 10 is arranged along the length direction X of the first compartment 20, and each column of battery devices 10 is arranged along the height direction Z of the first compartment 20.

[0178] The battery devices 10 in the first compartment 20 are arranged in 9 rows and 4 columns, with a total of 36 battery devices 10. The number of battery devices 10 in the second compartment 30 is equal to the number of battery devices 10 in the first compartment 20, and the battery devices 10 in the second compartment 30 are arranged in 9 rows and 4 columns.

[0179] In this embodiment, 9 battery devices 10 are arranged along the height direction Z in both the first compartment 20 and the second compartment 30, and 4 battery devices 10 are arranged along the length direction X in both of them, which can reduce the space waste in the first compartment 20 and the second compartment 30 and improve the space utilization rate of the first compartment 20 and the second compartment 30.

[0180] In some embodiments, the dimension of the first compartment 20 along the height direction Z and the dimension of the second compartment 30 along the height direction Z are both smaller than the dimension of a standard container along the height direction Z.

[0181] The dimension of the first compartment 20 along the height direction Z is smaller than the dimension of a standard container along the height direction Z, and the dimension of the second compartment 30 along the height direction Z is smaller than the dimension of a standard container along the height direction Z. Taking a 20-foot standard container as an example, the height of the first compartment 20 and the height of the second compartment 30 are both less than 2896 mm.

[0182] In this embodiment, compared with a standard container, the first compartment 20 and the second compartment 30 can have a smaller volume, so that the first compartment 20 and the second compartment 30 can have a larger volume energy density after accommodating the battery devices 10.

[0183] In some embodiments, please refer to Figure 6 , Figure 6 This is a schematic structural diagram of the energy storage system 100 provided by some other embodiments of the present application. A plurality of battery devices 10 located in the first compartment 20 are arranged in 12 rows and 3 columns, and a plurality of battery devices 10 located in the second compartment 30 are arranged in 9 rows and 4 columns. Each row of battery devices 10 is arranged along the length direction X of the first compartment 20, and each column of battery devices 10 is arranged along the height direction Z of the first compartment 20.

[0184] The battery devices 10 in the first compartment 20 are arranged in 12 rows and 3 columns, and the battery devices 10 in the second compartment 30 are arranged in 9 rows and 4 columns.

[0185] In this embodiment, the space occupied by the battery device 10 along the length direction X of the first housing 20 can be reduced, which is beneficial for the first housing 20 to accommodate other components and improves the volume utilization rate of the first housing 20.

[0186] In some embodiments, the dimension of the first housing 20 along the height direction Z is greater than the dimension of a standard container along the height direction Z. The dimension of the second housing 30 along the height direction Z is less than the dimension of a standard container along the height direction Z.

[0187] The dimension of the first housing 20 along the height direction Z is greater than the dimension of a standard container along the height direction Z, and the dimension of the second housing 30 along the height direction Z is less than the dimension of a standard container along the height direction Z. Taking a 20-foot standard container as an example, the height of the first housing 20 is greater than 2896 mm, and the height of the second housing 30 is less than 2896 mm.

[0188] In this embodiment, the first housing 20 and the second housing 30 can adjust their heights according to the number of internal components, which is beneficial for improving the space utilization rate of the first housing 20 and the second housing 30.

[0189] In some embodiments, the number of battery devices 10 in the first housing 20 is 30.

[0190] In some embodiments, the number of battery devices 10 in the second housing 30 is 30.

[0191] The battery devices 10 in the first housing 20 can be arranged in 5 rows and 6 columns, or in 6 rows and 5 columns, or in 10 rows and 3 columns.

[0192] The battery devices 10 in the second housing 30 can be arranged in 5 rows and 6 columns, or in 6 rows and 5 columns, or in 10 rows and 3 columns.

[0193] In some embodiments, the number of battery devices 10 in the first housing 20 and the number of battery devices 10 in the second housing 30 are both 30.

[0194] The arrangement mode of the battery devices 10 in the first housing 20 and the arrangement mode of the battery devices 10 in the second housing 30 can be the same or different.

[0195] In some embodiments, please refer to Figure 7 , Figure 7Schematic structural diagram of the energy storage system 100 provided for other embodiments of the present application. A plurality of battery devices 10 located in the first housing 20 are arranged in 10 rows and 3 columns, and a plurality of battery devices 10 located in the second housing 30 are arranged in 10 rows and 3 columns. Each row of battery devices 10 is arranged along the length direction X of the first housing 20, and each column of battery devices 10 is arranged along the height direction Z of the first housing 20.

[0196] The battery devices 10 in the first housing 20 are arranged in 10 rows and 3 columns, with a total of 30 battery devices 10. The number of battery devices 10 in the second housing 30 is equal to the number of battery devices 10 in the first housing 20, and the battery devices 10 in the second housing 30 are arranged in 10 rows and 3 columns.

[0197] In this embodiment, the arrangement of the battery devices 10 in the first housing 20 and the second housing 30 is more regular, which is beneficial to the installation and maintenance of the battery devices 10.

[0198] In some embodiments, the current conversion device 60 includes a first current converter 601. A plurality of battery devices 10 located in the first housing 20 include a plurality of first battery clusters. Each first battery cluster includes a plurality of battery devices 10 connected in series, and the first current converter 601 is electrically connected to at least one first battery cluster.

[0199] The number of battery devices 10 connected in series in each first battery cluster is equal. The first current converter 601 is electrically connected to at least one first battery cluster. It can be that the first current converter 601 is electrically connected to one first battery cluster; it can also be that the first current converter 601 is electrically connected to a plurality of first battery clusters, and the number of first battery clusters electrically connected to the first current converter 601 can be two, three, four, five, six, etc.

[0200] When the first battery cluster is in the charging state, the first current converter 601 acts as a rectifier to convert electrical energy from external alternating current into direct current and store it in the first battery cluster. When the first battery cluster is in the discharging state, the first current converter 601 acts as an inverter to convert the electrical energy stored in the first battery cluster from direct current into alternating current and supply it to the electrical equipment.

[0201] In some embodiments, the current conversion device 60 includes a second current converter 602. A plurality of battery devices 10 include a plurality of second battery clusters. Each second battery cluster includes a plurality of battery devices 10 connected in series, and the second current converter 602 is electrically connected to at least one second battery cluster.

[0202] The number of battery devices 10 connected in series in each second battery cluster is equal.

[0203] The second converter 602 is electrically connected to at least one second battery cluster. It can be that the second converter 602 is electrically connected to one second battery cluster; it can also be that the second converter 602 is electrically connected to multiple second battery clusters, and the number of second battery clusters electrically connected to the second converter 602 can be two, three, four, five, six, etc.

[0204] When the second battery cluster is in the charging state, the second converter 602 acts as a rectifier to convert electrical energy from external alternating current into direct current and store it in the second battery cluster. When the second battery cluster is in the discharging state, the second converter 602 acts as an inverter to convert the electrical energy stored in the second battery cluster from direct current into alternating current and deliver it to the electrical equipment.

[0205] In some embodiments, the current conversion device 60 includes a first converter 601. The multiple battery devices 10 located in the first housing 20 include multiple first battery clusters, and each first battery cluster includes multiple battery devices 10 connected in series. The first converter 601 is electrically connected to at least one first battery cluster. The current conversion device 60 includes a second converter 602. The multiple battery devices 10 include multiple second battery clusters, and each second battery cluster includes multiple battery devices 10 connected in series. The second converter 602 is electrically connected to at least one second battery cluster.

[0206] Both the first converter 601 and the second converter 602 are located outside the first housing 20 and the second housing 30. The first converter 601 and the second converter 602 can be independent of each other, or the first converter 601 and the second converter 602 can be integrated together.

[0207] In this embodiment, by electrically connecting the first battery cluster through the first converter 601, the first converter 601 can realize the input or output of the electrical energy of the first battery cluster, so that multiple first battery clusters can be respectively connected to the electrical equipment or the power grid, improving the service performance of the first housing 20. By electrically connecting the second battery cluster through the second converter 602, the second converter 602 can realize the input or output of the electrical energy of the second battery cluster, so that multiple second battery clusters can be respectively connected to the electrical equipment or the power grid, improving the service performance of the second housing 30.

[0208] In some embodiments, one first converter 601 is correspondingly provided for each first battery cluster.

[0209] In some embodiments, one second converter 602 is correspondingly provided for each second battery cluster.

[0210] In some embodiments, one first converter 601 is correspondingly provided for each first battery cluster. One second converter 602 is correspondingly provided for each second battery cluster.

[0211] In this embodiment, the first battery cluster corresponds to the first inverter 601 one by one, reducing the power requirement of the first inverter 601 and improving the stability of the electrical energy input or output of the first battery cluster. The second battery cluster corresponds to the second inverter 602 one by one, reducing the power requirement of the second inverter 602 and improving the stability of the electrical energy input or output of the second battery cluster.

[0212] In some embodiments, please refer to Figure 8 and Figure 9 , Figure 8 which is a schematic framework diagram of the control module 40, the first sub-control module 403, the second sub-control module 404, and the battery device 10 in the energy storage system 100 provided by some embodiments of the present application; Figure 9 which is a schematic framework diagram of the current conversion device 60, the first sub-control module 403, the second sub-control module 404, and the battery device 10 in the energy storage system 100 provided by some embodiments of the present application. The energy storage system 100 further includes a first sub-control module 403. The first sub-control module 403 includes a first control part 4031 and a second control part 4032. Each first inverter 601 is electrically connected to at least one first battery cluster through a first control part 4031. The second control part 4032 is communicatively connected to the control module 40 and the battery monitoring unit of the battery device 10 located in the first compartment 20.

[0213] The battery monitoring unit of the battery device 10 located in the first compartment 20 can be used to monitor the voltage, temperature, etc. of the battery cells 1 located in the first compartment 20.

[0214] The first control part 4031 is a high-voltage part, and the electrical energy transmission between the first inverter 601 and the first battery cluster is through the first control part 4031. The second control part 4032 is a low-voltage part, and communication data is transmitted between the second control part 4032 and the control module 40, enabling the control module 40 to monitor and control the battery device 10 located in the second compartment 30.

[0215] The first converter 601 and at least one first battery cluster are electrically connected through the first control section 4031. The first control section 4031 can control the on / off of the first converter 601 and the first battery cluster to control the input, output or power output of the first battery cluster. The first converter 601 and the first battery cluster can be in one-to-one correspondence, or the first converter 601 can correspond to multiple first battery clusters. The second control section 4032 is communicatively connected to the control module 40 to transmit the control signal of the first sub-control module 403 to the control module 40, or to transmit the instruction of the control module 40 to the first sub-control module 403 for execution, so as to realize the communication connection between the first sub-control module 403 and the control module 40. The first sub-control module 403 can be one, and one first sub-control module 403 is communicatively connected to the control module 40; the first sub-control module 403 can also be multiple, and multiple first sub-control modules 403 are all communicatively connected to the same control module 40.

[0216] In some embodiments, the energy storage system 100 further includes a second sub-control module 404. The second sub-control module 404 includes a third control section 4041 and a fourth control section 4042. Each second converter 602 is electrically connected to at least one second battery cluster through a third control section 4041. The fourth control section 4042 is communicatively connected to the control module 40 and the battery monitoring unit of the battery device 10 located in the second compartment 30.

[0217] The battery monitoring unit of the battery device 10 located in the second compartment 30 can be used to monitor the voltage, temperature, etc. of the battery cells 1 located in the second compartment 30.

[0218] The third control section 4041 is a high-voltage part, and the power transmission between the second converter 602 and the second battery cluster is through the third control section 4041. The fourth control section 4042 is a low-voltage part, and communication data is transmitted between the fourth control section 4042 and the control module 40, so that the control module 40 can monitor and control the battery device 10 located in the second compartment 30.

[0219] The second converter 602 and at least one second battery cluster are electrically connected through a third control section 4041. The third control section 4041 can control the on / off of the second converter 602 and the second battery cluster to control the inflow / outflow or output of electrical energy of the second battery cluster. The second converter 602 and the second battery cluster may be in one-to-one correspondence, or the second converter 602 may correspond to multiple second battery clusters. The fourth control section 4042 is communicatively connected to the control module 40 to transmit the control signal of the second sub-control module 404 to the control module 40, or to transmit the instruction of the control module 40 to the second sub-control module 404 for execution, so as to realize the communicative connection between the second sub-control module 404 and the control module 40. The second sub-control module 404 may be one, and one second sub-control module 404 is communicatively connected to the control module 40; the second sub-control module 404 may also be multiple, and multiple second sub-control modules 404 are all communicatively connected to the same control module 40.

[0220] In this embodiment, the first sub-control module 403 can control the on / off of the first converter 601 and the first battery cluster, reducing the control difficulty of the first battery cluster. The control module 40 can receive the signal of the first sub-control module 403 to realize the signal transmission of the first sub-control module 403. The second sub-control module 404 can control the on / off of the second converter 602 and the second battery cluster, reducing the control difficulty of the second battery cluster. The control module 40 can receive the signal of the second sub-control module 404 to realize the signal transmission of the second sub-control module 404.

[0221] 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 of the battery device 10 located in the first housing 20, and the second battery monitoring circuit is used to collect second data of the battery device 10 located in the second housing 30; the control module 40 is used to determine the working state data of the energy storage system 100. The working state data of the energy storage system 100 is associated with the first data and the second data.

[0222] In some embodiments, the second control section 4032 is communicatively connected between the first battery monitoring circuit and the control module 40, and the fourth control section 4042 is communicatively connected between the second battery monitoring circuit and the control module 40.

[0223] In some embodiments, the second control section 4032 is communicatively connected between the first battery monitoring circuit and the control module 40, and the second control section 4032 is used to forward the first data. The fourth control section 4042 is communicatively connected between the second battery monitoring circuit and the control module 40, and the fourth control section 4042 is used to forward the second data.

[0224] In some embodiments, the second control section 4032 is communicatively connected between the first battery monitoring circuit and the control module 40. The second control section 4032 is configured to acquire and process the first data, and transfer the processed data to the control module 40. The fourth control section 4042 is communicatively connected between the second battery monitoring circuit and the control module 40. The fourth control section 4042 is configured to acquire and process the second data, and transfer the processed data to the control module 40.

[0225] In some embodiments, the first battery monitoring circuit is directly communicatively connected to the control module 40, and the second battery monitoring circuit is directly communicatively connected to the control module 40. The control module 40 processes the first data and the second data to determine the operating state data of the energy storage system 100.

[0226] In some embodiments, the control module 40 may be a module in the energy storage system 100 for monitoring and managing the battery device 10, and it may serve as the management unit of the battery device 10 in the energy storage system 100. The control module 40 may be communicatively connected to the first battery monitoring circuit and the second battery monitoring circuit, and it is capable of receiving the information from the first battery monitoring circuit and the second battery monitoring circuit and processing it to determine the operating state data of the energy storage system 100 by using the information from the first battery monitoring circuit and the second battery monitoring circuit. The control module 40 may monitor information such as the current, voltage, power, state of charge or temperature of the battery cell 1 of the battery device 10 to determine the operating state data of the energy storage system 100. As an example, the control module 40 includes a insulation monitoring module IMM (Insulation Monitoring Module), a master battery management unit MBMU (Master Battery Management Unit, MBMU), an Ethernet ETH (EtherNet, ETH) and a fiber optic conversion module and other modules. In some embodiments, the insulation monitoring module IMM, the master battery management unit MBMU, the Ethernet ETH and the fiber optic conversion module are all control units.

[0227] In some embodiments, the energy storage system 100 further includes a second control section 4032 and a fourth control section 4042. The second control section 4032 is communicatively connected between the first battery monitoring circuit and the control module 40, and the fourth control section 4042 is communicatively connected between the first battery monitoring circuit and the control module 40.

[0228] The fourth control section 4042 may be a module connected between the second battery monitoring circuit and the control module 40, and is configured to forward information such as the current, voltage, power, state of charge or temperature of the battery cell 1 of the battery device 10 located in the second compartment 30 to the control module 40 or forward it to the control module 40 after processing.

[0229] The second control part 4032 is communicatively connected between the first battery monitoring circuit and the control module 40, enabling the second control part 4032 to forward information such as the current, voltage, power, state of charge, or temperature of the battery cell 1 of the battery device 10 located in the first housing 20 to the control module 40 or to process and then forward it to the control module 40. The fourth control part 4042 is communicatively connected between the second battery monitoring circuit and the control module 40, enabling the fourth control part 4042 to forward information such as the current, voltage, power, state of charge, or temperature of the battery cell 1 of the battery device 10 located in the second housing 30 to the control module 40 or to process and then forward it to the control module 40.

[0230] By providing the second control part 4032 between the first battery monitoring circuit and the control module 40 and the fourth control part 4042 between the second battery monitoring circuit and the control module 40, the control system of the energy storage system 100 has a three - level framework, reducing the length and complexity of the communication harness, reducing the sampling error, being beneficial to improving the reliability of the system, and also reducing the requirements for the processor and the communication bus, which is beneficial to reducing the overall cost of the system.

[0231] In some embodiments, the first inverter 601 is integrated with the corresponding first control part 4031.

[0232] The first inverter 601 is integrated with the first control part 4031 so that the first inverter 601 is integrated with the high - voltage part of the first sub - control module 403, which helps with the electrical connection between the first inverter 601 and the first control part 4031.

[0233] In this embodiment, by integrating the first inverter 601 with the corresponding first control part 4031, the integration degree of the first control part 4031 and the first inverter 601 is improved, and the installation difficulty of the first control part 4031 and the first inverter 601 is reduced.

[0234] In some embodiments, the second inverter 602 is integrated with the corresponding third control part 4041.

[0235] The second inverter 602 is integrated with the third control part 4041 so that the second inverter 602 is integrated with the high - voltage part of the second sub - control module 404, which helps with the electrical connection between the second inverter 602 and the third control part 4041.

[0236] In this embodiment, by integrating the second inverter 602 with the corresponding third control part 4041, the integration degree of the third control part 4041 and the second inverter 602 is improved, and the installation difficulty of the third control part 4041 and the second inverter 602 is reduced.

[0237] In some embodiments, each first battery cluster includes six battery devices 10 connected in series.

[0238] Taking the first housing 20 including 36 battery devices 10 as an example, every 6 out of the 36 battery devices 10 are connected in series to form a first battery cluster. The 6 first battery clusters are independent of each other, and each first battery cluster is connected to a first inverter 601.

[0239] In some embodiments, each second battery cluster includes six battery devices 10 connected in series.

[0240] Taking the second housing 30 including 36 battery devices 10 as an example, every 6 out of the 36 battery devices 10 are connected in series to form a second battery cluster. The 6 second battery clusters are independent of each other, and each second battery cluster is connected to a second inverter 602.

[0241] In some embodiments, each first battery cluster includes six battery devices 10 connected in series; each second battery cluster includes six battery devices 10 connected in series.

[0242] In the embodiment where both the first housing 20 and the second housing 30 accommodate 36 battery devices 10, the 6 first inverters 601 correspond to the 6 first battery clusters in the first housing 20, and the 6 second inverters 602 correspond to the 6 second battery clusters in the second housing 30.

[0243] In this embodiment, each first inverter 601 can realize the input or output of the electric energy of six battery devices 10. Multiple first inverters 601 are respectively electrically connected to multiple first battery clusters, reducing the risk of interference between multiple first battery clusters and improving the performance of the first housing 20. Each second inverter 602 can realize the input or output of the electric energy of six battery devices 10. Multiple second inverters 602 are respectively electrically connected to multiple second battery clusters, reducing the risk of interference between multiple second battery clusters and improving the performance of the second housing 30.

[0244] In some embodiments, the maximum operating voltage of the first inverter 601 is 1500V. In some embodiments, the maximum operating voltage of the second inverter 602 is 1500V.

[0245] In some embodiments, the maximum operating voltage of the first inverter 601 is 1500V; the maximum operating voltage of the second inverter 602 is 1500V.

[0246] Taking the battery cell 1 as a lithium iron phosphate battery cell 1 as an example, the maximum operating voltage of the battery cell 1 is 3.65V. Each battery device 10 includes 68 series-connected battery cells 1, and the maximum operating voltage of each battery device 10 is 248.2V. Each first battery cluster includes 6 series-connected battery devices 10, and each second battery cluster includes 6 series-connected battery devices 10. Therefore, the maximum operating voltage of the first battery cluster is 1489.2V, and the maximum operating voltage of the first converter 601 is 1500V, so that the first converter 601 can be adapted to the first battery cluster. The maximum operating voltage of the second battery cluster is 1489.2V, and the maximum operating voltage of the second converter 602 is 1500V, so that the second converter 602 can be adapted to the second battery cluster.

[0247] In this embodiment, one first battery cluster is correspondingly electrically connected to a first converter 601 with a maximum operating voltage of 1500V, so that one first battery cluster can be adapted to a working voltage of 1500V. One second battery cluster is correspondingly electrically connected to a second converter 602 with a maximum operating voltage of 1500V, so that one second battery cluster can be adapted to a working voltage of 1500V, improving the performance of the energy storage system 100.

[0248] In some embodiments, please refer to Figure 10 , Figure 10 is a schematic structural diagram of the energy storage system 100 provided by some embodiments of the present application (the converter device 60 is located in the third compartment). The energy storage system 100 further includes a third compartment. The first compartment 20 and the second compartment 30 are both separately arranged from the third compartment, and the converter device 60 is arranged in the third compartment.

[0249] It can be that the third compartment is arranged on the top of the first compartment 20; it can also be that the third compartment is hung on the first compartment 20; it can also be that the third compartment is hung on the second compartment 30; it can also be that the first compartment 20 and the second compartment 30 are both placed separately from the third compartment.

[0250] In this embodiment, by arranging the converter device 60 in the third compartment, the risk of the converter device 60 being damaged can be reduced, making the use of the converter device 60 safer and more reliable.

[0251] In some embodiments, the first compartment 20 and the second compartment 30 are both placed separately from the third compartment.

[0252] The first compartment 20 and the second compartment 30 are both arranged far away from the third compartment and do not contact the third compartment, so that the first compartment 20 and the second compartment 30 are both placed separately from the third compartment. It can be understood that the converter device 60 in the third compartment is electrically connected to the battery devices 10 in the first compartment 20 and the second compartment 30 through wires.

[0253] In this embodiment, the power conversion device 60 can be arranged away from the first housing 20 and the second housing 30, reducing the heat diffusion of the power conversion device 60 into the first housing 20 and the second housing 30, reducing the interference of the power conversion device 60 on the battery device 10, and improving the reliability of the energy storage system 100.

[0254] In some embodiments, at least part of the thermal management module 50 is accommodated in the first housing 20.

[0255] It can be that the entire thermal management module 50 is accommodated in the first housing 20; or it can be that a part of the thermal management module 50 is accommodated in the first housing 20 and another part is accommodated in the second housing 30.

[0256] In this embodiment, at least part of the thermal management module 50 is located above the second housing 30, and the thermal management component 3 can shield the second housing 30, thereby reducing the influence of rain or sunlight on the second housing 30 and improving the service performance of the energy storage system 100.

[0257] In some embodiments, please continue to refer to Figure 10 ... The entire thermal management module 50 is accommodated in the first housing 20.

[0258] The entire thermal management module 50 being accommodated in the first housing 20 can be that the thermal management module 50 is located on the top of the multiple battery devices 10 in the first housing 20; or the thermal management module 50 is located on one side of the multiple battery devices 10 in the first housing 20 along the length direction X; or the thermal management module 50 is located on one side of the multiple battery devices 10 in the first housing 20 along the width direction Y.

[0259] In this embodiment, the entire thermal management module 50 is located above the second housing 30, so that the thermal management module 50 can cover the second housing 30 and improve the service performance of the second housing 30. The thermal management module 50 is located in the first housing 20, so that the thermal management module 50 can have more heat dissipation space and improve the heat dissipation effect of the thermal management module 50.

[0260] In some embodiments, please continue to refer to Figure 10 ... The first housing 20 includes a first sub - housing 201 and a second sub - housing 202. The first housing 20 has a first isolation layer 204. The first isolation layer 204 separates the first sub - housing 201 and the second sub - housing 202. The first sub - housing 201 is located above the second sub - housing 202. The thermal management module 50 is accommodated in the first sub - housing 201, and the battery device 10 located in the first housing 20 is accommodated in the second sub - housing 202.

[0261] The first heat insulation layer separates the first sub - compartment 201 and the second sub - compartment 202, so that the first sub - compartment 201 and the second sub - compartment 202 are independent of each other. The first sub - compartment 201 is located above the second sub - compartment 202. The thermal management module 50 is accommodated in the first sub - compartment 201 and the battery device 10 is accommodated in the second sub - compartment 202. The first isolation layer 204 can isolate the thermal management module 50 and the battery device 10 located in the first housing 20. The thermal management module 50 is located above the battery device 10 so that the thermal management module 50 can block sunlight.

[0262] In this embodiment, by providing the first isolation layer 204, the first isolation layer 204 can isolate the thermal management module 50 and the battery device 10, reducing the risk of interference between the thermal management module 50 and the battery device 10. The thermal management module 50 is located above the battery device 10. On the one hand, the thermal management module 50 can block sunlight and rain for the battery device 10, reducing the impact of sunlight and rain on the battery device 10. On the other hand, the thermal management module 50 is located in the first sub - compartment 201, enabling the thermal management module 50 to have a larger heat dissipation area and improving the heat dissipation effect of the thermal management module 50.

[0263] In some embodiments, the current conversion device 60 further includes a first main control module (not shown in the figure). The first main control module corresponds to the first current converter 601 one by one. Each first main control module is integrated in a first current converter 601. The first main control module is used to control the on - off of the electrical connection between the first battery cluster and the first current converter 601. The control module 40 is electrically connected to the first main control module to control the state of the first main control module.

[0264] In some embodiments, the dimension of the first housing 20 in the height direction Z is 2700mm - 2900mm.

[0265] The dimension of the first housing 20 in the height direction Z can be any point value among 2700mm, 2710mm, 2720mm, 2730mm, 2740mm, 2750mm, 2760mm, 2770mm, 2780mm, 2790mm, 2800mm, 2810mm, 2820mm, 2830mm, 2840mm, 2850mm, 2860mm, 2870mm, 2880mm, 2890mm, 2900mm or the point value between any two of them.

[0266] Exemplarily, the dimension of the first housing 20 in the height direction Z is 2800mm.

[0267] In this embodiment, the dimension of the first housing 20 in the height direction Z is not equal to the dimension of the standard container in the height direction Z, and the height of the first housing 20 can be adjusted according to requirements, thereby improving the volume energy density of the first housing 20.

[0268] In some embodiments, please refer to Figure 11 , Figure 11 FIG. 5 is a schematic structural diagram of an energy storage system 100 provided by some embodiments of the present application (the thermal management module 50 is accommodated in the first sub-compartment 201 and the third sub-compartment 203). The first housing 20 includes a first sub-compartment 201, a second sub-compartment 202, and a third sub-compartment 203. The first housing 20 has a first isolation layer 204 and a second isolation layer 205. The first sub-compartment 201 is located on a side of the first isolation layer 204 away from the second sub-compartment 202 and the third sub-compartment 203. The second isolation layer 205 separates the second sub-compartment 202 and the third sub-compartment 203. Both the second sub-compartment 202 and the third sub-compartment 203 are located below the first sub-compartment 201, and the second sub-compartment 202 and the third sub-compartment 203 are arranged along the length direction X of the first housing 20. A part of the thermal management module 50 is accommodated in the first sub-compartment 201, and another part is accommodated in the third sub-compartment 203.

[0269] Within the first housing 20, the first isolation layer 204 and the second isolation layer 205 divide the first housing 20 into a first sub-compartment 201, a second sub-compartment 202, and a third sub-compartment 203. The first sub-compartment 201 is located above the second sub-compartment 202 and the third sub-compartment 203, and the second sub-compartment 202 and the third sub-compartment 203 are arranged along the length direction X.

[0270] In this embodiment, by separating the battery device 10 and the thermal management module 50 through the first isolation layer 204 and the second isolation layer 205, the risk of interference between the battery device 10 and the thermal management module 50 can be reduced. By accommodating a part of the thermal management module 50 in the first sub-compartment 201 and another part in the third sub-compartment 203, the installation difficulty of the thermal management module 50 can be reduced.

[0271] In some embodiments, please refer to Figure 12 , Figure 12 FIG. 6 is a schematic structural diagram of the thermal management module 50 provided by some embodiments of the present application. The battery device 10 includes a thermal management component 3. The thermal management module 50 includes a condenser 501, a pumping device 502, a heat exchanger 503, a compressor 504, a throttling device 505, and a fan 506. The fan 506 is used to dissipate heat from the condenser 501. The pumping device 502, the heat exchanger 503, and the thermal management component 3 located in the first housing 20 are connected to form a first cooling cycle loop 507. The pumping device 502, the heat exchanger 503, and the thermal management component 3 located in the second housing 30 are connected to form a second cooling cycle loop 508. The compressor 504, the condenser 501, the throttling device 505, and the heat exchanger 503 are connected to form a refrigerant cycle loop 509. At least the condenser 501 and the fan 506 are accommodated in the first sub-compartment 201, and at least one of the pumping device 502, the compressor 504, the throttling device 505, and the heat exchanger 503 is accommodated in the third sub-compartment 203.

[0272] The pumping device 502, the heat exchanger 503, and the thermal management component 3 located in the first housing 20 are connected to form a first cooling circulation loop 507. The pumping device 502, the heat exchanger 503, and the thermal management component 3 located in the second housing 30 are connected to form a second cooling circulation loop 508. The first cooling circulation loop 507 and the second cooling circulation loop 508 are used to cool the battery cells 1. The compressor 504, the condenser 501, the throttling device 505, and the heat exchanger 503 are connected to form a refrigerant circulation loop 509. The refrigerant circulation loop 509 is used to cool the coolant passing through the heat exchanger 503.

[0273] The pumping device 502, the heat exchanger 503, the thermal management component 3, and the pumping device 502 are connected to form a cooling circulation loop.

[0274] It should be noted that the pumping device 502 (which can also be called a water pump) is a component for transporting the coolant. The heat exchanger 503 is a component for performing heat exchange with the coolant flowing through it. The heat exchanger 503 can be, but is not limited to, a plate heat exchanger 503, a shell-and-tube heat exchanger 503, an air cooler, a spiral plate heat exchanger 503, a heat exchange tube bundle, etc. The coolant can be, but is not limited to, a mixture of ethylene glycol and water, etc.

[0275] Under the conveying action of the pumping device 502, the coolant can circulate in the cooling circulation loop and circulate through the pumping device 502, the heat exchanger 503, the thermal management component 3, and the pumping device 502. The above connections can be direct connections or indirect connections via pipelines.

[0276] By adopting the above solution, the coolant can circulate through the thermal management component 3 to directly exchange heat with the battery cells 1, thereby cooling the battery cells 1; the coolant after heat exchange with the battery cells 1 can also circulate through the heat exchanger 503 and exchange heat with the heat exchanger 503, so as to transfer the heat exchanged from the battery cells 1 to the heat exchanger 503 and cool the coolant.

[0277] The compressor 504, the condenser 501, the throttling device 505, the heat exchanger 503, and the compressor 504 are connected to form a refrigerant circulation loop 509.

[0278] In some embodiments, the pumping device 502, the heat exchanger 503, and the thermal management component 3 located in the first housing 20 are sequentially connected to form a first cooling circulation loop 507. The pumping device 502, the heat exchanger 503, and the thermal management component 3 located in the second housing 30 are connected to form a second cooling circulation loop 508. The compressor 504, the condenser 501, the throttling device 505, and the heat exchanger 503 are sequentially connected to form a refrigerant circulation loop 509.

[0279] It should be noted that the above connections can be direct connections or indirect connections via pipelines. The compressor 504 is a component that provides power for the refrigerant cycle and can cool the refrigerant. The throttling device 505 is a component used for temperature reduction and pressure reduction, and the throttling device 505 can be, but is not limited to, a throttle valve, an expansion valve, etc. The condenser 501 is a component used for heat exchange with the refrigerant flowing through it. The condenser 501 can be, but is not limited to, a plate heat exchanger 503, a shell-and-tube heat exchanger 503, an air cooler, a spiral plate heat exchanger 503, a heat exchange tube bundle, etc. The refrigerant has a low boiling point and latent heat of vaporization, can evaporate and condense at a relatively low temperature, and can achieve a refrigeration effect by absorbing and releasing heat. The refrigerant can be, but is not limited to, Freon, ammonia, carbon dioxide, R134A (1,1,1,2-tetrafluoroethane), R410A (Freon R-410A refrigerant), etc.

[0280] Among them, the heat exchanger 503 is provided in both the cooling circulation circuit and the first refrigerant circulation circuit 509. The interior of the heat exchanger 503 is provided with a coolant flow channel and a refrigerant flow channel. The coolant flow channel participates in forming the cooling circulation circuit and is used for the coolant to flow through it. The refrigerant flow channel participates in forming the first refrigerant circulation circuit 509 and is used for the refrigerant to flow through it. The coolant flow channel and the refrigerant flow channel are not connected to each other so that the coolant and the refrigerant do not mix. In the heat exchanger 503, the coolant and the refrigerant can perform heat exchange. In particular, the heat of the coolant can be exchanged to the refrigerant so that the heat exchanger 503 can cool the coolant flowing through it.

[0281] It is possible that only the condenser 501 and the fan 506 are accommodated in the first sub - chamber 201, and the pumping device 502, the compressor 504, the throttling device 505, and the heat exchanger 503 are all accommodated in the third sub - chamber 203; it is also possible that the condenser 501, the fan 506, and the heat exchanger 503 are accommodated in the first sub - chamber 201, and the compressor 504, the throttling device 505, and the pumping device 502 are all accommodated in the third sub - chamber 203; it is also possible that the condenser 501, the fan 506, the heat exchanger 503, the pumping device 502, and the compressor 504 are accommodated in the first sub - chamber 201, and the throttling device 505 is accommodated in the third sub - chamber 203; it is also possible that the condenser 501, the fan 506, the heat exchanger 503, the pumping device 502, and the throttling device 505 are accommodated in the first sub - chamber 201, and the compressor 504 is accommodated in the third sub - chamber 203; it is also possible that the condenser 501, the fan 506, the heat exchanger 503, the throttling device 505, and the compressor 504 are accommodated in the first sub - chamber 201, and the pumping device 502 is accommodated in the third sub - chamber 203; it is also possible that the condenser 501, the fan 506, the heat exchanger 503, and the throttling device 505 are accommodated in the first sub - chamber 201, and the compressor 504 and the pumping device 502 are accommodated in the third sub - chamber 203; it is also possible that the condenser 501, the fan 506, the heat exchanger 503, and the compressor 504 are accommodated in the first sub - chamber 201, and the throttling device 505 and the pumping device 502 are accommodated in the third sub - chamber 203.

[0282] In this embodiment, by accommodating the condenser 501 and the fan 506 in the first sub - chamber 201, the condenser 501 and the fan 506 are located at the top of the first chamber body 20, which is beneficial for the fan 506 to dissipate heat from the condenser 501 and improve the condensation performance of the condenser 501. The fan 506 is placed in the first sub - chamber 201, so that the fan 506 is located at the top of the first chamber body 20. A ventilation opening can be provided at the top of the first sub - chamber 201 to facilitate ventilation between the fan 506 and the external environment, and to achieve heat exchange between the condenser 501 and the outside world. It can be understood that the ventilation opening can also be provided on the side wall of the first sub - chamber 201 to increase the heat dissipation area of the heat management module 50.

[0283] In some embodiments, the condenser 501, the pumping device 502, the heat exchanger 503, the compressor 504, the throttling device 505, and the fan 506 are all heat management units.

[0284] In some embodiments, the dimension of the first chamber body 20 in the height direction Z is 2400 mm - 2600 mm.

[0285] The dimension of the first bin body 20 in the height direction Z can be a point value of any one of 2400mm, 2410mm, 2420mm, 2430mm, 2440mm, 2450mm, 2460mm, 2470mm, 2480mm, 2490mm, 2500mm, 2510mm, 2520mm, 2530mm, 2540mm, 2550mm, 2560mm, 2570mm, 2580mm, 2590mm, 2600mm or a point value between any two of them.

[0286] In this embodiment, the dimension of the first bin body 20 in the height direction Z is smaller than the dimension of the standard container in the height direction Z, which can reduce the volume of the first bin body 20, thereby improving the volume energy density of the first bin body 20.

[0287] In some embodiments, please refer to Figure 13 , Figure 13 FIG. 100 is a schematic structural diagram of the energy storage system 100 provided in some embodiments of the present application (the thermal management module 50 is accommodated in the third sub-bin 203). The first bin body 20 includes a second sub-bin 202 and a third sub-bin 203. The first bin body 20 has a second isolation layer 205, and the second isolation layer 205 separates the second sub-bin 202 and the third sub-bin 203. The second sub-bin 202 and the third sub-bin 203 are arranged along the length direction X of the first bin body 20. The battery device 10 located in the first bin body 20 is accommodated in the second sub-bin 202, and the thermal management module 50 is accommodated in the third sub-bin 203.

[0288] The entire thermal management module 50 is accommodated in the third sub-bin 203, and the thermal management module 50 and the battery device 10 located in the first bin body 20 are arranged along the first direction.

[0289] In this embodiment, by providing the second isolation layer 205, the second isolation layer 205 can reduce the risk of interference between the battery device 10 and the thermal management module 50. By arranging the thermal management module 50 in the third sub-bin 203, on the one hand, the thermal management module 50 is located above the second bin body 30, which is beneficial to the heat dissipation of the thermal management module 50 and reduces the influence of the heat dissipation of the thermal management module 50 on the battery device 10 in the first bin body 20; on the other hand, the thermal management module 50 and the battery device 10 of the first sub-bin 201 are arranged along the length direction X, which can reduce the height of the thermal management module 50 and reduce the maintenance difficulty of the thermal management module 50.

[0290] In some embodiments, please refer to Figure 14 , Figure 14 FIG. 100 is a schematic structural diagram of the energy storage system 100 provided in some embodiments of the present application (the control module 40 is accommodated in the fifth sub-bin 302). The entire control module 40 is accommodated in the second bin body 30.

[0291] In this embodiment, all of the control module 40 is accommodated in the second housing 30, which is beneficial to the maintenance and operation of the control module 40 located in the second housing 30 and reduces the maintenance difficulty of the control module 40.

[0292] In some embodiments, the second housing 30 includes a fourth sub-housing 301 and a fifth sub-housing 302. The second housing 30 has a third isolation layer 303 that separates the fourth sub-housing 301 and the fifth sub-housing 302. The fourth sub-housing 301 and the fifth sub-housing 302 are arranged along the length direction X of the first housing 20. The battery device 10 located in the second housing 30 is accommodated in the fourth sub-housing 301, and the control module 40 is accommodated in the fifth sub-housing 302.

[0293] The control module 40 and the battery device 10 located in the second housing 30 are arranged along the length direction X, and the control module 40 is located at the end of the second housing 30 along the length direction X.

[0294] In this embodiment, by arranging the control module 40 to be accommodated in the fifth sub-housing 302, the risk of interference between the battery device 10 and the control module 40 can be reduced.

[0295] In some embodiments, the control module 40 further includes a power distribution module 401 and a fire control module 402. Both the control module 40 and the fire control module 402 are electrically connected to the power distribution module 401. The power distribution module 401 and the fire control module 402 are both accommodated in the fifth sub-housing 302. By arranging the control module 40, the power distribution module 401, and the fire control module 402 in the fifth sub-housing 302, the heights of the control module 40, the power distribution module 401, and the fire control module are relatively low, facilitating the maintenance and repair of the fire control module 402, the power distribution module 401, and the fire control module.

[0296] In some embodiments, the control module 40, the power distribution module 401, and the fire control module 402 are all control units.

[0297] In some embodiments, please refer to Figure 15 , Figure 15 is a schematic structural diagram of the second housing 30 provided in some embodiments of the present application. The fire control module 402 is located below the power distribution module 401. The fire control module 402 and the power distribution module 401 are arranged along the height direction Z, and the fire control module 402 is located at the bottom of the fifth sub-housing 302 to facilitate the maintenance and use of the fire control module 402.

[0298] It may be that both the control module 40 and the power distribution module 401 are located above the fire control module 402; or it may be that both the control module 40 and the fire control module 402 are located below the power distribution module 401.

[0299] In this embodiment, the fire control module 402 can be located at a relatively low position, which is beneficial to the use and maintenance of the fire control module 402 and improves the reliability of the energy storage system 100.

[0300] In some embodiments, please refer to Figure 16 , Figure 16 which is a schematic structural diagram of the second bin 30 provided in some other embodiments of the present application. The fire control module 402 and the power distribution module 401 are arranged along the width direction Y of the first bin 20.

[0301] Both the fire control module 402 and the power distribution module 401 are provided at the bottom of the fifth sub-bin 302. It can be that the control module 40 is above the power distribution module 401; it can also be that the control module 40 is below the power distribution module 401; or the control module 40 and the power distribution module 401 are arranged along the width direction Y.

[0302] In this embodiment, both the fire control module 402 and the power distribution module 401 have relatively low heights, which facilitates the use and maintenance of the fire control module 402 and the power distribution module 401 and improves the reliability of the energy storage system 100.

[0303] In some embodiments, the dimension of the second bin 30 along the height direction Z is 2300 mm - 2500 mm.

[0304] The dimension of the second bin 30 along the height direction Z can be any point value among 2300 mm, 2310 mm, 2320 mm, 2330 mm, 2340 mm, 2350 mm, 2360 mm, 2370 mm, 2380 mm, 2390 mm, 2400 mm, 2410 mm, 2420 mm, 2430 mm, 2440 mm, 2450 mm, 2460 mm, 2470 mm, 2480 mm, 2490 mm, 2500 mm or any point value between any two of them.

[0305] Exemplarily, the dimension of the second bin 30 along the height direction Z is 2400 mm.

[0306] In this embodiment, the dimension of the second bin 30 along the height direction Z is smaller than that of the standard container along the height direction Z, which can reduce the volume of the second bin 30 and thus improve the volume energy density of the second bin 30.

[0307] In some embodiments, please refer to Figure 17 and Figure 18 , Figure 17 which is an assembly drawing of the first bin 20 and the second bin 30 provided in some embodiments of the present application; Figure 18Schematic structural diagram of the fixing member 70 provided by some embodiments of the present application. The energy storage system 100 further includes a fixing member 70, and the fixing member 70 is configured to connect the first bin 20 and the second bin 30; wherein, the fixing member 70 includes a support member 701, and the support member 701 is disposed between the first bin 20 and the second bin 30 along the height direction Z.

[0308] The fixing member 70 can be detachably connected to the first bin 20 and the second bin 30, for example, by snap connection; or the fixing member 70 can be fixedly connected to the first bin 20 and the second bin 30, for example, by welding.

[0309] In this embodiment, by providing the fixing member 70, the connection between the first bin 20 and the second bin 30 is made more stable.

[0310] In some embodiments, the fixing member 70 further includes a locking attachment 702, and the support member 701 is disposed between the first bin 20 and the second bin 30 along the height direction Z. The locking attachment 702 is rotatably disposed on the support member 701 about an axis extending along the height direction Z, and the locking attachment 702 is used to lock the first bin 20 and the second bin 30.

[0311] The locking attachment 702 can lock the first bin 20 and the second bin 30 by snap connection; or the locking attachment 702 can lock the first bin 20 and the second bin 30 by bolting. For example, the locking attachment 702 is a locking rod, and threads with opposite helix directions are provided on both sides of the locking rod along its length. Threaded holes are provided on both the first bin 20 and the second bin 30, and the locking rod rotates to make the threads cooperate with or separate from the threaded holes to lock or unlock the first bin 20 and the second bin 30.

[0312] By disposing the support member 701 between the first bin 20 and the second bin 30 adjacent in the height direction Z, the connection between the first bin 20 and the second bin 30 can be realized, and the cooperation between the first bin 20 and the second bin 30 can also be buffered. By locking the first bin 20 and the second bin 30 with the locking attachment 702, the stacking of the first bin 20 and the second bin 30 is made more stable.

[0313] In some embodiments, the bottom of the first bin body 20 adjacent in the height direction Z has a first locking hole (not shown in the figure), and the top of the second bin body 30 has a second locking hole (not shown in the figure). The first locking hole and the second locking hole are arranged opposite to each other in the height direction Z. The locking member 702 further includes a first locking portion 7021, a second locking portion 7022, and a connecting portion 7023. The connecting portion 7023 is rotatably arranged on the support member 701 around an axis extending in the height direction Z. The connecting portion 7023 connects the first locking portion 7021 and the second locking portion 7022. The first locking portion 7021 and the second locking portion 7022 are respectively located on both sides of the support member 701. The connecting portion 7023 has a first position and a second position. When the connecting portion 7023 is in the first position, the first locking portion 7021 and the second locking portion 7022 can respectively insert into or withdraw from the first locking hole and the second locking hole. When the connecting portion 7023 is in the second position, the first locking portion 7021 and the second locking portion 7022 can cooperate to lock and attach the adjacent first bin body 20 and second bin body 30.

[0314] The first locking portion 7021, the second locking portion 7022, and the connecting portion 7023 can be integrally formed, or the first locking portion 7021, the second locking portion 7022, and the connecting portion 7023 can also be formed by welding.

[0315] It is possible that both the first locking hole and the second locking hole are waist-shaped holes with the same size. The length of the waist-shaped hole is greater than the width. Both the first locking portion 7021 and the second locking portion 7022 are T-shaped blocks. The length and width of the T-shaped part of the first locking portion 7021 are both smaller than the length and width of the waist-shaped hole, and the length of the T-shaped part is greater than the width of the waist-shaped hole. The sizes of the first locking portion 7021 and the second locking portion 7022 are the same. Both the first locking portion 7021 and the second locking portion 7022 can be inserted into the corresponding first locking hole and second locking hole. By rotating the connecting portion 7023, the first locking portion 7021 and the second locking portion 7022 can be respectively clamped in the first locking hole and the second locking hole to achieve the locking and attachment of the adjacent first bin body 20 and second bin body 30.

[0316] By switching the connecting portion 7023 between the first position and the second position, the locking member 702 can lock or unlock the first bin body 20 and the second bin body 30, which is convenient for the disassembly and assembly of the adjacent first bin body 20 and second bin body 30.

[0317] In some embodiments, the support member 701 is provided with a through hole 7011 that penetrates the support member 701 in the height direction Z. The locking attachment 702 is rotatably inserted into the through hole 7011 about an axis extending in the height direction Z. The fixing member 70 further includes a driving arm 703. The driving arm 703 is connected to the locking attachment 702. The support member 701 is provided with a receiving cavity 7012 that communicates with the through hole 7011. The receiving cavity 7012 penetrates at least one end of the support member 701 in a direction perpendicular to the height direction Z. The driving arm 703 is swingably disposed in the receiving cavity 7012.

[0318] The driving arm 703 can be welded, clamped or bolted to the locking attachment 702.

[0319] The receiving cavity can penetrate both ends of the support member 701 in a direction perpendicular to the height direction Z, or can penetrate only one end of the support member 701 in a direction perpendicular to the height direction Z. The driving arm 703 can be entirely located in the receiving cavity 7012, and the driving arm 703 is swung by inserting a hand or a connecting member into the receiving cavity 7012; the driving arm 703 can also be partially located outside the receiving cavity 7012 to facilitate swinging the driving arm 703 to move.

[0320] By swinging the driving arm 703 in the receiving cavity 7012, the connection portion 7023 is switched between the first position and the second position, facilitating quick locking or unlocking between the adjacent first bin 20 and the second bin 30.

[0321] In some embodiments, the sum of the dimension of the first bin 20 in the height direction Z, the dimension of the second bin 30 in the height direction Z, and the dimension of the support member 701 in the height direction Z is greater than or equal to the dimension of a standard container in the height direction Z. In this embodiment, the energy storage system 100 can have a relatively large dimension in the height direction Z, which is beneficial to increasing the space of the first bin 20 and the second bin 30 in the height direction Z, so that more battery devices 10 can be arranged in the first bin 20 and the second bin 30 in the height direction Z, improving the volume energy density of the energy storage system 100.

[0322] In some embodiments, the sum of the dimension of the first bin 20 in the height direction Z and the dimension of the second bin 30 in the height direction Z is greater than or equal to the dimension of a standard container in the height direction Z.

[0323] Exemplarily, the standard container is a 20-foot standard container, the height of the standard container is 2896 mm, and the sum of the dimension of the first bin 20 in the height direction Z and the dimension of the second bin 30 in the height direction Z is greater than or equal to 2896 mm.

[0324] In this embodiment, the first housing 20 and the second housing 30 can have more space in the height direction Z, which is beneficial to arranging more battery devices 10 in the first housing 20 and the second housing 30 along the height direction Z, thereby improving the volumetric energy density of the energy storage system 100.

[0325] In some embodiments, the dimensions of the first housing 20 and the second housing 30 along their length direction X are both consistent with the dimensions of the length direction X of a standard container, and the dimensions of the first housing 20 and the second housing 30 along their width direction Y are both consistent with the dimensions of the width direction Y of a standard container.

[0326] The first housing 20 is a box structure with the same length and width as a standard container. The second housing 30 is a box structure with the same length and width as a standard container.

[0327] In this embodiment, the floor areas of the first housing 20 and the second housing 30 are the same as that of a standard container, which can reduce the transportation difficulty of the first housing 20 and the second housing 30 and lower the transportation cost.

[0328] In some embodiments, the total energy of the energy storage system 100 is 9 MWh - 11 MWh.

[0329] The areal energy density of the energy storage system 100 can be any point value among 9 MWh, 9.1 MWh, 9.2 MWh, 9.3 MWh, 9.4 MWh, 9.5 MWh, 9.6 MWh, 9.7 MWh, 9.8 MWh, 9.9 MWh, 10 MWh, 10.1 MWh, 10.2 MWh, 10.3 MWh, 10.4 MWh, 10.5 MWh, 10.6 MWh, 10.7 MWh, 10.8 MWh, 10.9 MWh, 11 MWh or the point value between any two of them.

[0330] In this embodiment, the energy storage system 100 can have a relatively high energy, improving the performance of the energy storage system 100.

[0331] In some embodiments, the total weight of the first housing 20 and the components disposed in the first housing 20 is less than or equal to 36 tons.

[0332] In some embodiments, the total weight of the second housing 30 and the components disposed in the second housing 30 is less than or equal to 36 tons.

[0333] In some embodiments, the total weight of the first housing 20 and the components disposed in the first housing 20 is less than or equal to 36 tons; the total weight of the second housing 30 and the components disposed in the second housing 30 is less than or equal to 36 tons.

[0334] The total weight of the first bin 20 and the components disposed within the first bin 20 may be 20 tons, 20.5 tons, 21 tons, 21.5 tons, 22 tons, 22.5 tons, 23 tons, 23.5 tons, 24 tons, 24.5 tons, 25 tons, 25.5 tons, 26 tons, 26.5 tons, 27 tons, 27.5 tons, 28 tons, 28.5 tons, 29 tons, 29.5 tons, 30 tons, 30.5 tons, 31 tons, 31.5 tons, 32 tons, 32.5 tons, 33 tons, 33.5 tons, 34 tons, 34.5 tons, 35 tons, 35.5 tons, 36 tons, etc.

[0335] In this embodiment, the weights of the first bin 20 and the second bin 30 are both not higher than 36 tons, which facilitates the transportation of the first bin 20 and the second bin 30 and reduces the transportation cost.

[0336] In some embodiments, the standard container is a 20-foot standard container. In this way, the first bin 20 and the second bin 30 can have a relatively large size to accommodate the battery device 10, improving the practicability of the first bin 20 and the second bin 30.

[0337] Please continue to refer to Figure 10 and Figure 12, an embodiment of the present application provides an energy storage system 100, which includes a plurality of battery devices 10, a first housing 20, a second housing 30, a control module 40, a thermal management module 50, and a power conversion device 60. Thirty-six battery devices 10 are accommodated in both the first housing 20 and the second housing 30. The thirty-six battery devices 10 in the first housing 20 are arranged in 9 rows and 4 columns, and the thirty-six battery devices 10 in the second housing 30 are arranged in 9 rows and 4 columns. Every six battery devices 10 in the first housing 20 form a first battery cluster, and every six battery devices 10 in the second housing 30 form a second battery cluster. The first housing 20 and the second housing 30 are stacked along the height direction Z, the first housing 20 is located above the second housing 30, and at least one of the dimension of the first housing 20 along the height direction Z and the dimension of the second housing 30 along the height direction Z is smaller than the dimension of a standard container along the height direction Z. The dimensions of the first housing 20 and the second housing 30 along their length direction X are both consistent with the dimension of the standard container along the length direction X, and the dimensions of the first housing 20 and the second housing 30 along their width direction Y are both consistent with the dimension of the standard container along the width direction Y. The control module 40 is used to perform electrical control on the plurality of battery devices 10 in the first housing 20 and the second housing 30, and the second housing 30 accommodates the control module 40. The thermal management module 50 is used to manage the temperature of the plurality of battery devices 10 in the first housing 20 and the second housing 30, and the first housing 20 accommodates the thermal management module 50. The power conversion device 60 is electrically connected to the battery device 10. The energy storage system 100 includes a first inverter 601 and a second inverter 602. The first housing 20 accommodates the first inverter 601, and each first inverter 601 is correspondingly connected to a first battery cluster. The second housing 30 accommodates the second inverter 602, and each second inverter 602 is correspondingly connected to a second battery cluster. Wherein, the battery device 10 includes a battery cell 1, and the battery cell 1 includes a housing 11 and electrode terminals 12. Both the width and the height of the housing 11 are smaller than the length of the housing 11. The length direction of the housing 11 is parallel to the length direction X of the first housing 20. Along the length direction X of the first housing 20, the electrode terminals 12 are arranged at one end of the housing 11. The dimension of the housing 11 along the length direction X is 465 mm - 525 mm, the dimension along the width direction Y is 49 mm - 60 mm, and the dimension along the height direction Z is 163 mm - 184 mm. Each battery device 10 includes two battery cell assemblies 1a arranged along the length direction X, and the two battery cell assemblies 1a are connected in series. Each battery cell assembly 1a includes 34 battery cells 1 connected in series, and the 34 battery cells 1 are arranged along the width direction Y.

[0338] In this embodiment, the battery device 10, the control module 40, the thermal management module 50, and the power conversion device 60 are all accommodated in the first housing 20 and the second housing 30. On the one hand, it can reduce the space waste of the energy storage system 100. On the other hand, it can improve the integration degree of the energy storage system 100 and enhance the stability of the energy storage system 100. On the other hand, when the energy storage system 100 is transported, the energy storage system 100 only occupies the space of the first housing 20 and the second housing 30, which is convenient for the transportation of the energy storage system 100. The width and height of the outer shell 11 of the battery cell 1 are both smaller than the length of the outer shell 11, and the length direction of the outer shell 11 is parallel to the length direction X of the first housing 20, so that the length direction X of the battery cell 1 in the battery device 10 is consistent with the length direction X of the first housing 20, which can reduce the space occupied by the battery cell 1 in the height direction Z. The electrode terminal 12 is arranged at at least one end of the outer shell 11, thereby further reducing the space occupied by the battery cell 1 in the height direction Z, and then reducing the space occupied by the battery device 10 in the first housing 20 or the second housing 30 in the height direction Z, reducing the space waste of the first housing 20 and the second housing 30 in the height direction Z, and improving the space utilization rate of the first housing 20 and the second housing 30 in the length direction X. Without changing the volume of the first housing 20 and the second housing 30, more battery cells 1 can be accommodated in both the first housing 20 and the second housing 30, improving the volumetric energy density of the energy storage system 100. The width and height of the battery cell 1 are both smaller than the length, so that when the length of a single battery cell 1 extends along the length direction X of the first housing 20, it can reduce the height space occupied by a single battery cell 1 in the battery device 10, and the electrode terminal 12 is arranged at at least one end of the battery cell 1 along the length direction X, which can reduce the height of the battery device 10 with reference to the height of the battery cell 1, thereby reducing the space occupied by the battery device 10 in the height direction Z, improving the space utilization rate of the first housing 20 and the second housing 30 in the height direction Z, making the battery cells 1 arranged along the length direction X in the first housing 20 and the second housing 30 more compact, so that more battery cells 1 can be accommodated in the first housing 20 and the second housing 30, and improving the volumetric energy density of the energy storage system 100. Taking the battery cell 1 as a lithium iron phosphate battery cell 1 as an example, the maximum working voltage of the battery cell 1 is 3.65V. Each battery device 10 includes 68 series-connected battery cells 1, and the maximum working voltage of each battery device 10 is 248.2V. Each first battery cluster includes 6 series-connected battery devices 10, and each second battery cluster includes 6 series-connected battery devices 10. Therefore, the maximum working voltage of the first battery cluster is 1489.2V, and the maximum working voltage of the first inverter 601 is 1500V, so that the first inverter 601 can be adapted to the first battery cluster.The maximum operating voltage of the second battery cluster is 1489.2V, and the maximum operating voltage of the second converter 602 is 1500V, so that the second converter 602 can be adapted to the second battery cluster.

[0339] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0340] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A energy storage system, characterized in that, Comprising: Multiple battery devices; A first bin and a second bin, wherein the first bin and the second bin both accommodate the battery devices, the first bin and the second bin are stacked along the height direction, the first bin is located above the second bin, and at least one of the dimension of the first bin along the height direction and the dimension of the second bin along the height direction is smaller than the dimension of a standard container along the height direction; A control module for electrically controlling the multiple battery devices in the first bin and the second bin; the control module is accommodated in one of the first bin and the second bin, or a part of the control module is accommodated in the first bin and another part is accommodated in the second bin; A thermal management module for managing the temperature of the multiple battery devices in the first bin and the second bin; the thermal management module is accommodated in one of the first bin and the second bin, or a part of the thermal management module is accommodated in the first bin and another part is accommodated in the second bin; A current conversion device electrically connected to the multiple battery devices in the first bin and the second bin, and the current conversion device is located outside the first bin and the second bin; Wherein, each battery device includes multiple battery cells, each battery cell includes a housing and electrode terminals, both the width and the height of the housing are smaller than the length of the housing, and the multiple battery cells are arranged along the width direction of the housing to form a battery cell assembly, and along the length direction of the housing, the electrode terminals are arranged at at least one end of the housing.

2. The energy storage system according to claim 1, characterized in that, The battery device includes two battery cell assemblies arranged along the length direction of the first bin, and each battery cell assembly includes multiple battery cells arranged along the width direction of the first bin.

3. The energy storage system according to claim 2, characterized in that, The electrode terminals of the battery cells in one battery cell assembly are arranged back to back with the electrode terminals of the battery cells in another battery cell assembly.

4. The energy storage system according to claim 2, wherein The battery cell includes a pressure relief mechanism and two electrode terminals with opposite polarities, the housing includes a first wall portion and a second wall portion oppositely arranged along the length direction, both electrode terminals are arranged on the first wall portion, and the pressure relief mechanism is arranged on the second wall portion.

5. The energy storage system according to claim 2, characterized in that, The two battery cell assemblies are connected in series, each battery cell assembly includes 33 - 36 battery cells, and the 33 - 36 battery cells are connected in series.

6. The energy storage system according to claim 5, wherein, Each battery cell assembly includes 34 battery cells, or each battery cell assembly includes 35 battery cells.

7. The energy storage system according to claim 1, wherein The battery cell includes an electrode assembly, and the electrode assembly is a laminated electrode assembly.

8. The energy storage system according to claim 1, wherein The dimension of the housing along the length direction of the housing is 465mm - 525mm; and / or, the dimension of the housing along the width direction of the housing is 49mm - 60mm; and / or, the dimension of the housing along the height direction of the housing is 163mm - 184mm.

9. The energy storage system according to claim 1, characterized in that The electrode terminals are arranged at at least one end of the housing along the length direction of the first bin.

10. The energy storage system according to any one of claims 1-9, characterized in that, The number of the battery devices in the first compartment is equal to the number of the battery devices in the second compartment.

11. The energy storage system according to any one of claims 1-9, characterized in that, The number of the battery devices in the first compartment is 36; and / or, the number of the battery devices in the second compartment is 36.

12. The energy storage system according to any one of claims 1-9, characterized in that, A plurality of the battery devices located in the first compartment are arranged in 9 rows and 4 columns; and / or, a plurality of the battery devices located in the second compartment are arranged in 9 rows and 4 columns, each row of the battery devices is arranged along the length direction of the first compartment, and each column of the battery devices is arranged along the height direction of the first compartment.

13. The energy storage system according to claim 12, wherein, The dimension of the first compartment along the height direction and the dimension of the second compartment along the height direction are both smaller than the dimension of the standard container along the height direction.

14. The energy storage system according to any one of claims 1-9, characterized in that The number of the battery devices in the first compartment is 30; and / or, the number of the battery devices in the second compartment is 30.

15. The energy storage system according to claim 14, characterized in that, A plurality of the battery devices located in the first compartment are arranged in 10 rows and 3 columns; and / or, a plurality of the battery devices located in the second compartment are arranged in 10 rows and 3 columns; Each row of the battery devices is arranged along the length direction of the first compartment, and each column of the battery devices is arranged along the height direction of the first compartment.

16. The energy storage system according to any one of claims 1-9, characterized in that, A plurality of the battery devices located in the first compartment are arranged in 12 rows and 3 columns, and a plurality of the battery devices located in the second compartment are arranged in 9 rows and 4 columns; Each row of the battery devices is arranged along the length direction of the first compartment, and each column of the battery devices is arranged along the height direction of the first compartment.

17. The energy storage system according to claim 16, wherein, The dimension of the first compartment along the height direction is greater than the dimension of the standard container along the height direction; the dimension of the second compartment along the height direction is smaller than the dimension of the standard container along the height direction.

18. The energy storage system according to any one of claims 1-9, characterized in that, The converter device includes a first converter, a plurality of the battery devices located in the first compartment include a plurality of first battery clusters, and the first converter is electrically connected to at least one of the first battery clusters; and / or, the converter device includes a second converter, a plurality of the battery devices located in the second compartment include a plurality of second battery clusters, and the second converter is electrically connected to at least one of the second battery clusters.

19. The energy storage system according to claim 18, wherein The energy storage system further includes a first sub-control module, the first sub-control module includes a first control part and a second control part, the first converter is electrically connected to at least one of the first battery clusters through the first control part, and the second control part is communicatively connected to the control module and the battery monitoring unit of the battery devices located in the first compartment; and / or, the energy storage system further includes a second sub-control module, the second sub-control module includes a third control part and a fourth control part, the second converter is electrically connected to at least one of the second battery clusters through the third control part, and the fourth control part is communicatively connected to the control module and the battery monitoring unit of the battery devices located in the second compartment.

20. The energy storage system according to claim 19, wherein The first converter and the corresponding first control part are integrated into one body; and / or, the second converter and the corresponding third control part are integrated into one body.

21. The energy storage system according to claim 18, wherein, Each of the first battery clusters is correspondingly provided with one of the first converters; and / or each of the second battery clusters is correspondingly provided with one of the second converters.

22. The energy storage system according to claim 18, wherein, Each of the first battery clusters includes six of the battery devices connected in series; and / or each of the second battery clusters includes six of the battery devices connected in series.

23. The energy storage system according to claim 22, characterized in that, The maximum operating voltage of the first converter is 1500V; and / or the maximum operating voltage of the second converter is 1500V.

24. The energy storage system according to any one of claims 1-9, characterized in that, The energy storage system further includes a third warehouse body, the first warehouse body and the second warehouse body are both separately arranged from the third warehouse body, and the flow conversion device is arranged in the third warehouse body.

25. The energy storage system according to claim 24, characterized in that, The first warehouse body and the second warehouse body are both placed separately from the third warehouse body.

26. The energy storage system according to any one of claims 1-9, characterized in that, The thermal management module is entirely contained within the first housing.

27. The energy storage system according to claim 26, wherein The first compartment body includes a first sub-compartment and a second sub-compartment, the first compartment body has a first isolation layer, the first isolation layer separates the first sub-compartment and the second sub-compartment, the first sub-compartment is located above the second sub-compartment, the thermal management module is accommodated in the first sub-compartment, and the battery device located in the first compartment body is accommodated in the second sub-compartment.

28. The energy storage system according to claim 27, wherein The dimension of the first warehouse body along the height direction is 2700mm-2900mm.

29. The energy storage system according to claim 26, wherein The first warehouse body includes a first sub-compartment, a second sub-compartment and a third sub-compartment, the first warehouse body has a first isolation layer and a second isolation layer, the first sub-compartment is located on the side of the first isolation layer away from the second sub-compartment and the third sub-compartment, the second isolation layer separates the second sub-compartment and the third sub-compartment, the second sub-compartment and the third sub-compartment are both located below the first sub-compartment, and the second sub-compartment and the third sub-compartment are arranged along the length direction of the first warehouse body, a part of the thermal management module is accommodated in the first sub-compartment, and the other part is accommodated in the third sub-compartment.

30. The energy storage system according to claim 29, wherein, The battery device includes a thermal management component, and the thermal management module includes a condenser, a pumping device, a heat exchanger, a compressor, a throttling device and a fan, wherein the fan is used to dissipate heat for the condenser, the pumping device, the heat exchanger and the thermal management component located in the first warehouse are connected to form a first coolant circulation loop, the pumping device, the heat exchanger and the thermal management component located in the second warehouse are connected to form a second coolant circulation loop, and the compressor, the condenser, the throttling device and the heat exchanger are connected to form a refrigerant circulation loop; At least the condenser and the fan are accommodated in the first sub-compartment, and at least one of the pumping device, the compressor, the throttling device and the heat exchanger is accommodated in the third sub-compartment.

31. The energy storage system according to claim 30, wherein, The dimension of the first warehouse body along the height direction is 2400mm-2600mm.

32. The energy storage system according to claim 26, wherein The first compartment body includes a second sub-compartment and a third sub-compartment, the first compartment body has a second isolation layer, the second isolation layer separates the second sub-compartment and the third sub-compartment, the second sub-compartment and the third sub-compartment are arranged along the length direction of the first compartment body, the battery device located in the first compartment body is accommodated in the second sub-compartment, and the thermal management module is accommodated in the third sub-compartment.

33. The energy storage system according to any one of claims 1-9, characterized in that The control module is accommodated in the second bin body.

34. The energy storage system according to claim 32, characterized in that, The second bin body includes a fourth sub-bin and a fifth sub-bin. The second bin body has a third isolation layer that separates the fourth sub-bin and the fifth sub-bin. The fourth sub-bin and the fifth sub-bin are arranged along the length direction of the first bin body. The battery device located in the second bin body is accommodated in the fourth sub-bin, and the control module is accommodated in the fifth sub-bin.

35. The energy storage system according to claim 34, wherein, The energy storage system further includes a power distribution module and a fire control module. Both the control module and the fire control module are electrically connected to the power distribution module. The power distribution module and the fire control module are both accommodated in the fifth sub-bin.

36. The energy storage system according to claim 35, wherein The fire control module is located below the power distribution module.

37. The energy storage system according to claim 35, wherein The fire control module and the power distribution module are arranged along the width direction of the first bin body.

38. The energy storage system according to any one of claims 1-9, characterized in that, The dimension of the second bin body along the height direction is 2300 mm - 2500 mm.

39. The energy storage system according to any one of claims 1-9, characterized in that, The energy storage system further includes a fixing member configured to connect the first bin body and the second bin body. Among them, the fixing member includes a support member, and the support member is arranged between the first bin body and the second bin body along the height direction.

40. The energy storage system according to any one of claims 1-9, characterized in that, The sum of the dimension of the first bin body along the height direction and the dimension of the second bin body along the height direction is greater than or equal to the dimension of a standard container along the height direction.

41. The energy storage system according to any one of claims 1-9, characterized in that, The dimensions of the first bin body and the second bin body along their length directions are both consistent with the dimension of the standard container along the length direction, and the dimensions of the first bin body and the second bin body along their width directions are both consistent with the dimension of the standard container along the width direction.

42. The energy storage system according to any one of claims 1-9, characterized in that, The total energy of the energy storage system is 9 MWh - 11 MWh.

43. The energy storage system according to any one of claims 1-9, characterized in that, The total weight of the first bin body and the components arranged in the first bin body is less than or equal to 36 tons; and / or, the total weight of the second bin body and the components arranged in the second bin body is less than or equal to 36 tons.

44. The energy storage system according to any one of claims 1-9, characterized in that, The standard container is a 20-foot standard container.

Images