Energy storage system, dismounting method for energy storage system, and mounting method for energy storage system

Abstract

The present application provides an energy storage system, a dismounting method for the energy storage system, and a mounting method for the energy storage system. The energy storage system comprises a first compartment, a first battery device, a second compartment, a second battery device, and a thermal management module. The first battery device is accommodated in the first compartment, the second battery device is accommodated in the second compartment, the first compartment and the second compartment are stacked in a height direction, and the first compartment is located above the second compartment. The thermal management module is used for managing the temperatures of the first battery device and the second battery device. The thermal management module comprises a heat dissipation module, the heat dissipation module being located at the top of the first compartment and covering at least part of the first battery device. The energy storage system realizes thermal management of the first battery device and the second battery device by means of the thermal management module, thereby reducing the production cost of the energy storage system, reducing the space occupied by the energy storage system, and improving the energy density of the energy storage system. By arranging the heat dissipation module at the top of the first compartment, the heat dissipation effect of the heat dissipation module is improved.

Description

Energy storage system, disassembly method of energy storage system and installation method of energy storage system Cross-reference to related applications

[0001] This application claims international patent applications filed on August 15, 2024, entitled "Energy Storage Device and Energy Storage System" (application number: PCT / CN2024 / 112387), "Energy Storage Device, Energy Storage System and Charging Network" (application number: PCT / CN2024 / 112558), "Container, Energy Storage Device, Energy Storage Equipment, Energy Storage System and Charging Network" (application number: PCT / CN2024 / 104575), "Container, Energy Storage Device, Energy Storage Equipment, Energy Storage System and Charging Network" (application number: PCT / CN2024 / 112498), and "Energy Storage Equipment, Energy Storage System and Charging Network" (application number: PCT / CN2024 / 112498), respectively. The priority of the following patent applications filed on August 15, 2024, entitled “Energy Storage Device, Energy Storage System and Charging Network” (application number: PCT / CN2024 / 112473), entitled “Container, Energy Storage Device, Energy Storage System and Charging Network” (application number: 202421984591.6), filed on August 15, 2024, entitled “Container, Energy Storage Device, Energy Storage System and Charging Network” (application number: PCT / CN2024 / 127187), filed on October 24, 2024, entitled “Energy Storage Device, Energy Storage System and Charging Network” (application number: PCT / CN2024 / 144344), and filed on December 31, 2024, entitled “Energy Storage System” (application number: PCT / CN2024 / 144344), the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of batteries, and more specifically, to an energy storage system, a method for disassembling the energy storage system, and a method for installing the energy storage system. Background Technology

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

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

[0005] The purpose of this application is to provide an energy storage system, a method for disassembling the energy storage system, and a method for installing the energy storage system, which can improve the energy density of the energy storage system.

[0006] In a first aspect, embodiments of this application provide an energy storage system, the energy storage system including a first compartment, a first battery device, a second compartment, a second battery device, and a thermal management module, the first compartment accommodating the first battery device; the second compartment accommodating the second battery device, the first compartment and the second compartment being stacked along the height direction, with the first compartment located above the second compartment; the thermal management module is used to manage the temperature of the first battery device and the second battery device, the thermal management module including a heat dissipation module, the heat dissipation module being located on top of the first compartment and covering at least a portion of the first battery device.

[0007] In the above technical solution, by setting up a first compartment and a second compartment, the first battery device is housed in the first compartment, and the second battery device is housed in the second compartment. The first and second compartments are stacked along their height. This reduces the footprint of the energy storage system, thereby increasing the energy density per unit area and improving the area energy density of the energy storage system. Furthermore, the first and second compartments can be transported separately, reducing transportation difficulty and costs. The energy storage system uses a thermal management module to manage the thermal of both the first and second battery devices. This reduces the number of thermal management modules, lowers production costs, reduces space requirements, and improves the volumetric energy density of the energy storage system. By placing the heat dissipation module on top of the first compartment, at least a portion of the thermal management module can share floor space with the container. With a fixed total energy, the energy storage system can have a smaller volume, resulting in a smaller footprint and increased energy density per unit area. On the other hand, fewer obstructions above the heat dissipation module improve its heat dissipation effect, enhance the thermal management module's heat dissipation efficiency, and reduce auxiliary power consumption. By covering at least part of the first battery device with the heat dissipation module, the impact of solar radiation on the temperature of the first battery device can be reduced, improving the temperature consistency between the first and second battery devices.

[0008] As an optional technical solution in this application embodiment, the heat dissipation module is housed inside the first compartment.

[0009] In the above technical solution, by housing the heat dissipation module inside the first compartment, the integration of the energy storage system is improved. During transportation and assembly, the heat dissipation module can be transported and assembled together with the first compartment, which helps to reduce transportation and assembly costs.

[0010] As an optional technical solution in this application embodiment, the first compartment includes an isolation layer, which divides the first compartment into a first sub-compartment and a second sub-compartment. Along the height direction, the first sub-compartment is located on the side of the second sub-compartment opposite to the second compartment. The heat dissipation module is housed in the first sub-compartment, and the first battery device is housed in the second sub-compartment.

[0011] In the above technical solution, the isolation layer separates the heat dissipation module and the first battery device. On the one hand, this helps reduce the risk of interference between the heat dissipation module and the first battery device, thereby improving the reliability of the energy storage system. On the other hand, the heat from the heat dissipation module is less likely to be transferred to the first battery device, thus minimizing its impact.

[0012] As an optional technical solution in this application embodiment, the first compartment has a first top wall and a first side wall. The first top wall is connected to the top of the first side wall. Along the height direction, the first top wall is located on the side of the isolation layer away from the second compartment. The first top wall and / or the first side wall are provided with ventilation openings for ventilation of the heat dissipation module.

[0013] In the above technical solution, by setting ventilation openings in the first top wall and / or the first side wall, it is beneficial to heat dissipation of the heat dissipation module, so that the heat dissipation module can have more heat dissipation channels and improve the temperature control effect of the thermal management module.

[0014] As an optional technical solution in this application embodiment, the thermal management module is housed within the first sub-compartment.

[0015] In the above technical solution, housing the thermal management module within the first sub-compartment improves the integration of the energy storage system. During transportation and assembly, the thermal management module can be transported and assembled along with the first compartment, reducing transportation and assembly costs. Furthermore, the thermal management module and the first battery device are located in the first and second sub-compartments respectively, reducing the risk of interference between them and thus improving the reliability of the energy storage system.

[0016] As an optional technical solution in this application embodiment, the heat dissipation module is disposed on the outside of the first compartment.

[0017] In the above technical solution, placing the heat dissipation module on the outside of the first compartment simplifies manufacturing and reduces manufacturing costs.

[0018] As an optional technical solution in this application embodiment, the first chamber includes an isolation layer, the energy storage system includes a protective frame, the protective frame is detachably connected to the isolation layer, and the heat dissipation module is disposed inside the protective frame.

[0019] In the above technical solution, by setting a protective frame on the isolation layer and placing the heat dissipation module inside the protective frame, the protective frame can protect the heat dissipation module and reduce the risk of the heat dissipation module being damaged by falling objects.

[0020] As an optional technical solution in this application embodiment, the thermal management module is disposed inside the protective frame.

[0021] In the above technical solution, the thermal management module and the first battery device are located in the protective frame and the first compartment, respectively, which helps to reduce the risk of interference between the thermal management module and the first battery device, thereby improving the reliability of the energy storage system.

[0022] As an optional technical solution in this application embodiment, the protective frame includes a crossbeam and a plurality of columns. The plurality of columns are arranged at circumferential intervals along the isolation layer. The crossbeam connects the plurality of columns. One end of each column is detachably connected to the isolation layer, and the other end of each column is detachably connected to the crossbeam. Along the direction from the second compartment to the first compartment, the thermal management module does not extend beyond the upper surface of the crossbeam.

[0023] In the above technical solution, the protective frame includes a crossbeam and multiple uprights. The uprights are detachably connected to the isolation layer, and the crossbeams are detachably connected to the uprights. During transportation, the uprights and crossbeams can be removed, facilitating stacking and transportation, thus reducing transportation difficulty and costs. By ensuring that the thermal management module does not extend beyond the upper surface of the crossbeam in the direction from the second compartment to the first compartment, the protective effect of the protective frame on the thermal management module is improved, reducing the risk of damage to the thermal management module and enhancing the reliability of the energy storage system.

[0024] As an optional technical solution in this application embodiment, the height of the thermal management module is lower than the height of the column.

[0025] In the above technical solution, by making the height of the thermal management module lower than the height of the column, it is beneficial to reduce the risk of interference between the thermal management module and the crossbeam, and to improve the protective effect of the protective frame on the thermal management module.

[0026] As an optional technical solution in this application embodiment, the dimension of the protective frame along its length direction is the same as the dimension of the first compartment along its length direction, and the dimension of the protective frame along its width direction is the same as the dimension of the first compartment along its width direction.

[0027] In the above technical solution, by making the dimensions of the protective frame along its length direction consistent with the length direction of the first compartment, and the dimensions of the protective frame along its width direction consistent with the width direction of the first compartment, on the one hand, it is easier to obtain a larger internal space for the protective frame, thereby facilitating the accommodation of thermal management components. On the other hand, during transportation, the protective frame can also be transported together with the first compartment, which helps to reduce transportation costs.

[0028] As an optional technical solution in this application embodiment, the thermal management module includes a housing, the heat dissipation module is disposed inside the housing, the housing has an air inlet on one side along a first direction, and the housing has an air outlet on the top wall, the first direction being perpendicular to the height direction.

[0029] In the above technical solution, an air inlet is provided on one side of the housing along the first direction, allowing the heat dissipation module to draw in air from the side, and an air outlet is provided on the top wall of the housing, allowing the heat dissipation module to exhaust air from the top wall. This improves the heat dissipation effect of the heat dissipation module and reduces its thermal impact on surrounding components.

[0030] As an optional technical solution in this application embodiment, the first compartment has a first top wall and a first side wall, the first top wall is connected to the top of the first side wall, and both the first top wall and the first side wall are provided with ventilation openings; the ventilation openings provided on the first top wall are connected to the air outlet, and the ventilation openings provided on the first side wall are connected to the air inlet.

[0031] In the above technical solution, when the heat dissipation module is housed in the first compartment, ventilation openings are provided on the first top wall and the first side wall of the first compartment, so that the ventilation opening on the first top wall is connected to the air outlet and the ventilation opening on the first side wall is connected to the air inlet, thereby facilitating the intake and exhaust of air for the heat dissipation module and improving the heat dissipation effect of the heat dissipation module.

[0032] As an optional technical solution in this application embodiment, the heat dissipation module includes a fan and a condenser. Along the first direction, the condenser is disposed between the air inlet and the fan, and the fan is used to dissipate heat from the condenser.

[0033] In the above technical solution, by setting the condenser between the air inlet and the fan along the first direction, that is, the condenser and the fan are arranged side by side, it is beneficial to reduce the height of the casing.

[0034] As an optional technical solution in this application embodiment, the condenser is inclinedly disposed inside the housing.

[0035] In the above technical solution, by tilting the condenser inside the casing, it is beneficial to further reduce the height of the casing.

[0036] As an optional technical solution in this application embodiment, the thermal management module includes a housing, and the heat dissipation module is disposed inside the housing; along the height direction, the size of the housing is greater than or equal to 300mm and less than or equal to 550mm.

[0037] In the above technical solution, when the dimension of the housing along the height direction is greater than or equal to 300mm, the housing is relatively tall, and the internal space is large, which facilitates the accommodation of the heat dissipation module. When the dimension of the housing along the height direction is less than or equal to 550mm, the height of the housing is not too large, which helps to reduce the space occupied by the housing in the height direction and lower the overall center of gravity of the energy storage system.

[0038] As an optional technical solution in this application embodiment, both the first battery device and the second battery device include a thermal management component, and the heat dissipation module includes a condenser; the thermal management module further includes a pumping device, a heat exchanger, a compressor, and a throttling device, the pumping device, the heat exchanger, and the thermal management component of the first battery device are connected to form a first coolant circulation loop, the pumping device, the heat exchanger, and the thermal management component of the second battery device 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.

[0039] In the above technical solution, the first coolant circulation loop can perform thermal management on the individual battery cells in the first battery device, the second coolant circulation loop can perform thermal management on the individual battery cells in the second battery device, and the refrigerant circulation loop can cool the coolant passing through the heat exchanger, thus providing a good cooling effect on the individual battery cells.

[0040] As an optional technical solution in this application embodiment, the first compartment includes an isolation layer, the first battery device and the thermal management module are respectively located on both sides of the isolation layer, and along the height direction, the thermal management module is located on the side of the isolation layer away from the second compartment.

[0041] In the above technical solution, the isolation layer separates the thermal management module and the first battery device, which helps to reduce the risk of interference between the thermal management module and the first battery device, thereby improving the reliability of the energy storage system.

[0042] As an optional technical solution in this application embodiment, both the first battery device and the second battery device include a thermal management component, and the isolation layer is provided with a first lead-out hole; the energy storage system includes a main pipe, a first main pipe and a second main pipe, one end of the main pipe is connected to the thermal management module, and the other end of the main pipe passes through the first lead-out hole and is connected to the first main pipe and the second main pipe, the first main pipe is connected to the thermal management component of the first battery device, and the second main pipe is connected to the thermal management component of the second battery device.

[0043] In the above technical solution, one end of the main pipe is connected to the thermal management module, and the other end of the main pipe passes through the first lead hole and is connected to the first main pipe and the second main pipe. In this way, only the main pipe needs to pass through the isolation layer, while the first main pipe and the second main pipe do not need to pass through the isolation layer, which helps to reduce the number of holes.

[0044] As an optional technical solution in this application embodiment, the first compartment contains a plurality of first battery devices, which are arranged in rows and columns. The plurality of first battery devices in each row are arranged along the length of the first compartment, and the plurality of first battery devices in each column are arranged along the height. The energy storage system further includes a plurality of first branches, each of which is connected to the thermal management component of the plurality of first battery devices in a column. A first main pipe connects the plurality of first branches and the main pipe. And / or the second compartment contains a plurality of second battery devices, which are arranged in rows and columns. The plurality of second battery devices in each row are arranged along the length of the second compartment, and the plurality of second battery devices in each column are arranged along the height. The energy storage system further includes a plurality of second branches, each of which is connected to the thermal management component of the plurality of second battery devices in a column. A second main pipe connects the plurality of second branches and the main pipe.

[0045] In the above technical solution, a first main pipe connects to multiple first branches and a main pipe. Each first branch is connected to the thermal management components of multiple first battery devices in a row. The thermal management module can supply coolant to the main pipe. The coolant then flows through the main pipe, the first main pipe, and the multiple first branches to supply coolant to the thermal management components of the multiple first battery devices, resulting in a more uniform temperature of the coolant entering the thermal management components of the multiple first battery devices and reducing the risk of individual battery cell temperature runaway. Similarly, a second main pipe connects to multiple second branches and a main pipe. Each second branch is connected to the thermal management components of multiple second battery devices in a row. The thermal management module can supply coolant to the main pipe. The coolant then flows through the main pipe, the second main pipe, and the multiple second branches to supply coolant to the thermal management components of the multiple second battery devices, resulting in a more uniform temperature of the coolant entering the thermal management components of the multiple second battery devices and reducing the risk of individual battery cell temperature runaway.

[0046] As an optional technical solution in this application embodiment, the energy storage system includes a first sealing element, which seals the main pipe and the isolation layer.

[0047] In the above technical solution, by setting a first sealing element, the first sealing element can seal the main pipe and the isolation layer, reducing the risk of rainwater and other liquids entering the isolation layer on the side facing the first battery device.

[0048] As an optional technical solution in this application embodiment, the isolation layer is provided with a first flange, the first flange and the isolation layer are sealed together, the main pipe is provided with a second flange, the second flange and the main pipe are sealed together, the first flange and the second flange are both arranged around the main pipe, and the first sealing element is disposed between the first flange and the second flange.

[0049] In the above technical solution, the first flange and the insulating layer are sealed together to reduce the risk of rainwater or other liquids entering the insulating layer through the gap between the first flange and the insulating layer and facing the first battery device. The second flange is sealed together with the main pipe to reduce the risk of rainwater or other liquids entering the insulating layer through the gap between the second flange and the main pipe and facing the first battery device. A first seal is disposed between the first flange and the second flange to reduce the risk of rainwater or other liquids entering the insulating layer through the gap between the first flange and the second flange and facing the first battery device.

[0050] As an optional technical solution in this application embodiment, the second main pipe includes a first pipe body and a second pipe body. The first pipe body is at least partially disposed in the first compartment and is connected to the main pipe. The second pipe body is at least partially disposed in the second compartment and is connected to the thermal management component of the second battery device. The first pipe body and the second pipe body are detachably connected.

[0051] In the above technical solution, the first pipe body and the second pipe body are detachably connected. During transportation, the first pipe body and the second pipe body can be separated, which facilitates the separate transportation of the first compartment and the second compartment, and helps to reduce transportation difficulty and transportation costs.

[0052] As an optional technical solution in this application embodiment, the second main pipe further includes a connecting pipe, and the first pipe body and the second pipe body are detachably connected through the connecting pipe.

[0053] In the above technical solution, by setting a connecting pipe, one end of the connecting pipe is detachably connected to the first pipe body, and the other end of the connecting pipe is detachably connected to the second pipe body, which helps to reduce the difficulty of separating the first pipe body and the second pipe body.

[0054] As an optional technical solution in this application embodiment, the first pipe body is provided with a first switching valve, which is configured to connect or disconnect the first pipe body and the connecting pipe, and the second pipe body is provided with a second switching valve, which is configured to connect or disconnect the second pipe body and the connecting pipe.

[0055] In the above technical solution, since the energy storage system needs to be tested before leaving the factory, the first pipe body, connecting pipe, and second pipe body already contain coolant. When it is necessary to disassemble the connecting pipe, the first and second switching valves can be closed first, thereby disconnecting the first pipe body from the connecting pipe and the second pipe body from the connecting pipe. In this way, the coolant in the first and second pipe bodies is less likely to leak during disassembly. During assembly, the connecting pipe is first connected to the first and second pipe bodies, and then the first and second switching valves are opened, so that the first pipe body and the connecting pipe are connected, and the second pipe body and the connecting pipe are connected, so as to realize coolant circulation.

[0056] As an optional technical solution in this application embodiment, the connecting pipe is provided with a vent and a discharge port, the vent being positioned higher than the discharge port; the vent is provided with a first switch configured to open or close the vent, and the discharge port is provided with a second switch configured to open or close the discharge port.

[0057] In the above technical solution, before disassembling the connecting pipe, there is already coolant inside the connecting pipe. In order to facilitate the disassembly of the connecting pipe, the vent can be opened first through the first switch to balance the air pressure inside and outside the connecting pipe, and then the drain port can be opened through the second switch to release the coolant inside the connecting pipe.

[0058] As an optional technical solution in this application embodiment, the second switch has an open state of opening the discharge port and a closed state of closing the discharge port; the energy storage system further includes a draining fixture, which has a discharge channel and is used to cooperate with the second switch to switch the second switch from the closed state to the open state, so as to connect the discharge port and the discharge channel.

[0059] In the above technical solution, the energy storage system includes a draining fixture, which can cooperate with a second switch to switch the second switch from a closed state to an open state, thereby achieving rapid draining of the connecting pipe. When the draining fixture is separated from the second switch, the second switch switches from an open state to a closed state, which helps to reduce manual operation and improve disassembly and installation efficiency.

[0060] As an optional technical solution in this application embodiment, the thermal management module includes an expansion tank, a pumping device, and a heat exchanger. The pumping device, the heat exchanger, the thermal management component of the second battery device, and the expansion tank are connected to form a second coolant circulation loop. The second coolant circulation loop includes a second main pipe.

[0061] In the above technical solution, by setting up an expansion tank, on the one hand, the expansion tank can act as a buffer in the second coolant circulation loop. When the coolant expands due to heat, it absorbs some of the coolant; when the coolant contracts due to cold, it can replenish the coolant, thereby improving the stability of the coolant flow. On the other hand, after the connecting pipe is installed, if there is air in the connecting pipe, the expansion tank can absorb the air in the connecting pipe, allowing the coolant to circulate normally in the second coolant circulation loop.

[0062] As an optional technical solution in this application embodiment, at least one of the first tube body, the second tube body, and the connecting tube includes a deformable tube.

[0063] In the above technical solution, by including at least one of the first tube body, the second tube body, and the connecting tube as a deformable tube, it is convenient to disassemble and install the connecting tube.

[0064] As an optional technical solution in this application embodiment, the first compartment includes a first bottom wall, the first bottom wall is provided with a second outlet hole, the second compartment includes a second top wall, the second top wall is provided with a third outlet hole, and the second main pipe passes through the second outlet hole and the third outlet hole.

[0065] In the above technical solution, by setting a second outlet hole in the first bottom wall and a third outlet hole in the second top wall, the second main pipe can pass through the first bottom wall and the second top wall from the first compartment and enter the second compartment. This helps to reduce the length of the second main pipe exposed to the outside, reduces the risk of damage to the second main pipe, and improves the reliability of the energy storage system.

[0066] As an optional technical solution in this application embodiment, the energy storage system includes a connecting component, which is connected to the first bottom wall and the second top wall, and the second main pipe passes through the connecting component.

[0067] In the above technical solution, by setting up a connecting component and having the second main pipe pass through the connecting component, the connecting component can protect the second main pipe and reduce the risk of damage to the second main pipe.

[0068] As an optional technical solution in this application embodiment, the communication component includes a first connector, a second connector, and a second sealing member. The first connector is connected to the first bottom wall and is arranged around the second main pipe. The second top wall is provided with a second connector, which is sealed to the second top wall and is arranged around the second main pipe. The energy storage system further includes a second sealing member, which seals the first connector and the second connector.

[0069] In the above technical solution, by setting a first connector and a second connector, the first connector and the second connector together define a protective space, and the second main pipe passes through the protective space, thus providing better protection for the second main pipe and reducing the risk of damage to the second main pipe. By sealing the second connector to the second top wall, the risk of rainwater or other liquids entering the second compartment through the gap between the second connector and the second top wall is reduced. The second sealing element seals the first connector and the second connector, thereby reducing the risk of rainwater or other liquids entering the second compartment through the gap between the first connector and the second connector.

[0070] As an optional technical solution in this application embodiment, the second connector protrudes from the upper surface of the second top wall along the direction from the second compartment to the first compartment.

[0071] In the above technical solution, by making the second connector protrude from the upper surface of the second top wall in the direction from the second compartment to the first compartment, it is beneficial to reduce the risk of rainwater and other liquids entering the second compartment from the second connector.

[0072] As an optional technical solution in this application embodiment, the first connector and the second connector are plugged into each other. The first connector has a first sealing part and the second connector has a second sealing part. Along the height direction, the first sealing part and the second sealing part are disposed opposite to each other, and the second sealing part is located on the side of the first sealing part away from the isolation layer. The second sealing member is disposed between the first sealing part and the second sealing part.

[0073] In the above technical solution, by providing a first sealing part and a second sealing part, the first sealing part and the second sealing part can cooperate to clamp the second sealing element, thereby achieving a seal on the first connecting member and the second connecting member. Thus, during assembly, only the first connecting member and the second connecting member need to be inserted and mated to achieve a seal, which simplifies assembly.

[0074] As an optional technical solution in this application embodiment, both the first battery device and the second battery device include a thermal management component; the thermal management module further includes a pumping device and a heat exchanger, the pumping device, the heat exchanger, and the thermal management component of the first battery device are connected to form a first coolant circulation loop, and the pumping device, the heat exchanger, and the thermal management component of the second battery device are connected to form a second coolant circulation loop; the isolation layer is provided with a fourth outlet hole, and the energy storage system further includes a replenishment pipe, one end of which is connected to the thermal management module, and the other end of which passes through the fourth outlet hole and extends to the side of the isolation layer away from the thermal management module, the replenishment pipe being used to replenish coolant to the first coolant circulation loop and the second coolant circulation loop.

[0075] In the above technical solution, by setting up a replenishment pipe, one end of which is connected to the thermal management module and the other end of which extends to the side of the isolation layer away from the thermal management module, the first and second coolant circulation loops can be replenished through the replenishment pipe on the side of the isolation layer away from the thermal management module, thereby reducing the height of the replenishment operation and reducing the risk of danger during the replenishment operation.

[0076] As an optional technical solution in this application embodiment, the isolation layer is provided with a fifth outlet hole, the energy storage system further includes a maintenance box, the maintenance box is connected to the thermal management module through a wire, the wire passes through the fifth outlet hole, and the maintenance box is disposed in the first compartment and located on the side of the isolation layer away from the thermal management module.

[0077] In the above technical solution, by setting the maintenance box inside the first compartment and on the side of the isolation layer away from the thermal management module, it is beneficial to reduce the height of the maintenance box, which is beneficial to reduce the height during maintenance and debugging, and reduce the risk of danger during maintenance and debugging.

[0078] As an optional technical solution in this application embodiment, both the first battery device and the second battery device include a thermal management component, and the isolation layer is provided with a sixth lead-out hole and a seventh lead-out hole; the energy storage system includes a first main pipe and a second main pipe, one end of the first main pipe is connected to the thermal management module, and the other end of the first main pipe passes through the sixth lead-out hole and is connected to the thermal management component of the first battery device; one end of the second main pipe is connected to the thermal management module, and the other end of the second main pipe passes through the seventh lead-out hole and is connected to the thermal management component of the second battery device.

[0079] In the above technical solution, one end of the first main pipe is connected to the thermal management module, and the other end of the first main pipe passes through the sixth lead hole and is connected to the thermal management component of the first battery device. One end of the second main pipe is connected to the thermal management module, and the other end of the second main pipe passes through the seventh lead hole and is connected to the thermal management component of the second battery device. The coolant can flow from the first main pipe and the second main pipe to the thermal management component of the first battery device and the thermal management component of the second battery device respectively, which is beneficial to improving the flow uniformity of the thermal management component of the first battery device and the thermal management component of the second battery device.

[0080] As an optional technical solution in this application embodiment, the dimensions of the first and second compartments along the height direction are both smaller than the dimensions of a standard container along the height direction.

[0081] In the above technical solution, when the dimensions of the first and second compartments along the height direction are both smaller than the dimensions of a standard container along the height direction, the total weight of the first compartment and its components and the total weight of the second compartment and its components can be reduced, which helps to improve the problem of overweight transportation and reduces the transportation cost of the energy storage system.

[0082] As an optional technical solution in this application embodiment, the dimensions of the first and second silos along the height direction are both greater than or equal to one-third times the dimensions of the standard container along the height direction.

[0083] In the above technical solution, when the dimensions of the first and second compartments along the height direction are both greater than or equal to one-third times the dimensions of a standard container along the height direction, the energy storage system has high manufacturability and is more convenient to transport and install.

[0084] As an optional technical solution in this application embodiment, the dimensions of the first and second silos along the height direction are both greater than or equal to half the dimensions of the standard container along the height direction.

[0085] In the above technical solutions, when the dimensions of both the first and second compartments along the height direction are greater than or equal to half the dimension of a standard container along the height direction, the energy storage system exhibits higher manufacturability, higher volumetric energy density, and easier transportation and installation. For example, when the first and second compartments are stacked, the height is greater than that of a standard container. The total weight of the first compartment and its components is relatively low, as is the total weight of the second compartment and its components. This configuration allows the first and second compartments to be transported separately, and when stacked at the point of use, the energy storage system has a higher capacity.

[0086] As an optional technical solution in this application embodiment, the sum of the dimensions of the first and second silos along the height direction is greater than or equal to the dimension of a standard container along the height direction.

[0087] In the above technical solution, by making the sum of the dimensions of the first and second compartments along the height direction greater than or equal to the dimensions of a standard container along the height direction, it is beneficial to increase the power of the energy storage system.

[0088] As an optional technical solution in this application embodiment, the dimensions of the first compartment and the second compartment along the height direction are both greater than or equal to 805mm and both less than 2896mm.

[0089] In the above technical solution, by setting the dimensions of the first compartment along the height direction and the second compartment along the height direction to be greater than or equal to 805mm and less than 2896mm, it is beneficial to reduce the total weight of the first compartment and the components inside the first compartment, reduce the total weight of the second compartment and the components inside the second compartment, and maximize the power of the energy storage system while reducing the operating cost of the energy storage system.

[0090] As an optional technical solution in this application embodiment, the heat dissipation module is housed inside the first compartment, and the dimension of the first compartment along the height direction is larger than the dimension of the second compartment along the height direction.

[0091] In the above technical solution, by accommodating the heat dissipation module inside the first compartment, and ensuring that the height dimension of the first compartment is greater than that of the second compartment, the internal space of the first compartment is increased. This reduces the impact of the heat dissipation module on the volume of the first battery device, ensuring that the first compartment has sufficient space to accommodate both the first battery device and the heat dissipation module. Furthermore, it allows for the placement of a heat dissipation module with higher heat dissipation capacity, improving thermal management capabilities.

[0092] As an optional technical solution in this application embodiment, the dimensions of the first and second storage units along their length direction are consistent with the dimensions of the standard container along its length direction, and the dimensions of the first and second storage units along their width direction are consistent with the dimensions of the standard container along its width direction.

[0093] In the above technical solution, by making the dimensions of the first and second compartments along their length direction consistent with the dimensions of the standard container along their length direction, and the dimensions of the first and second compartments along their width direction consistent with the dimensions of the standard container along their width direction, it is beneficial to match the existing standard container transportation vehicles and lifting gear, thereby reducing the transportation cost of the energy storage system and thus reducing the operating cost of the energy storage system.

[0094] As an optional technical solution in this application embodiment, the total weight of the first silo and the components disposed in the first silo is less than or equal to 36 tons; and / or the total weight of the second silo and the components disposed in the second silo is less than or equal to 36 tons.

[0095] In the above technical solution, by making the total weight of the first compartment and the components installed in the first compartment less than or equal to 36 tons, and the total weight of the second compartment and the components installed in the second compartment less than or equal to 36 tons, the transportation limits of some countries are met, and the transportation difficulty and transportation cost are reduced.

[0096] As an optional technical solution in this application embodiment, the energy storage system further includes a control module, a first battery monitoring circuit, and a second battery monitoring circuit. The first battery monitoring circuit is used to collect first data of the first battery device, and the second battery monitoring circuit is used to collect second data of the second battery device. The control module is used to determine the operating status data of the energy storage system, and the operating status data of the energy storage system is associated with the first data and the second data.

[0097] In the above technical solution, the working status data of the energy storage system determined by the control module is associated with the first data of the first battery device collected by the first battery monitoring circuit and the second data of the second battery device collected by the second battery monitoring circuit. This enables the control module to control the first battery device and the second battery device, which helps to reduce the number of control modules required, maximizes the utilization of the control modules, and helps to reduce the cost of the energy storage system.

[0098] As an optional technical solution in this application embodiment, the energy storage system further includes a first sub-control module and a second sub-control module. The first sub-control module is communicatively connected between the first battery monitoring circuit and the control module, and the second sub-control module is communicatively connected between the second battery monitoring circuit and the control module.

[0099] In the above technical solution, by setting a first sub-control module between the first battery monitoring circuit and the control module, and setting a second sub-control module between the second battery monitoring circuit and the control module, the control system of the energy storage system is made into a three-level framework. This reduces the length and complexity of the communication harness, reduces sampling errors, improves the reliability of the system, and also reduces the requirements for the processor and communication bus, thus reducing the overall cost of the system.

[0100] As an optional technical solution in this application embodiment, the first battery monitoring circuit is directly connected to the control module, and the second battery monitoring circuit is also directly connected to the control module.

[0101] In the above technical solution, by directly connecting the first battery monitoring circuit and the control module, and by directly connecting the second battery monitoring circuit and the control module, the energy storage system is configured as a two-level framework. This allows the control module to monitor key parameters such as voltage, current, and temperature of the individual battery cells in the first and second battery devices in real time. This helps ensure that the individual battery cells in the first and second battery devices operate in a safe state, reducing the possibility of overcharging, over-discharging, and short circuits, and thus improving the reliability of the energy storage system.

[0102] As an optional technical solution in this application embodiment, the control module is housed in the first compartment or the second compartment.

[0103] In the above technical solution, there is only one control module, which can be housed in either the first or second compartment. The first or second compartment protects the control module, reducing the risk of damage. Furthermore, when the control module is housed in the second compartment, its height is reduced, facilitating operation by staff and enabling timely handling of emergencies.

[0104] Secondly, this application also provides a method for disassembling an energy storage system. The method is used to disassemble the aforementioned energy storage system, which includes a second main pipe. The second main pipe includes a first tube and a second tube. The first tube is at least partially disposed within a first compartment and is connected to the thermal management module. The second tube is at least partially disposed within a second compartment and is connected to the thermal management component of the second battery device. The first tube and the second tube are detachably connected. The method for disassembling the energy storage system includes: a disconnection step: separating the first tube and the second tube; and a separation step: separating the first compartment and the second compartment.

[0105] As an optional technical solution in this application embodiment, the second main pipe further includes a connecting pipe, and the first pipe body and the second pipe body are detachably connected through the connecting pipe; the disconnection step includes: separating the connecting pipe from the first pipe body and separating the connecting pipe from the second pipe body.

[0106] In the above technical solution, by setting a connecting pipe, one end of the connecting pipe is detachably connected to the first pipe body, and the other end of the connecting pipe is detachably connected to the second pipe body, which helps to reduce the difficulty of separating the first pipe body and the second pipe body.

[0107] As an optional technical solution in this application embodiment, the first pipe body is provided with a first switching valve, and the second pipe body is provided with a second switching valve; before the disconnection step, the disassembly method of the energy storage system further includes: a closing step: closing the first switching valve and the second switching valve.

[0108] In the above technical solution, since the energy storage system needs to be tested before leaving the factory, the first pipe body, connecting pipe, and second pipe body already contain coolant. When it is necessary to disassemble the connecting pipe, the first and second switching valves can be closed first, thereby disconnecting the first pipe body from the connecting pipe and the second pipe body from the connecting pipe. In this way, the coolant in the first and second pipe bodies is less likely to leak during disassembly. During assembly, the connecting pipe is first connected to the first and second pipe bodies, and then the first and second switching valves are opened, so that the first pipe body and the connecting pipe are connected, and the second pipe body and the connecting pipe are connected, so as to realize coolant circulation.

[0109] As an optional technical solution in this application embodiment, after the closing step and before the disconnection step, the disassembly method of the energy storage system further includes: a draining step: draining the coolant in the connecting pipe.

[0110] In the above technical solution, the connecting pipe already contains coolant before disassembling it. By first draining the coolant from the connecting pipe and then disassembling it, the difficulty of disassembling the connecting pipe can be reduced.

[0111] As an optional technical solution in this application embodiment, the connecting pipe is provided with a vent and a discharge port, the vent is positioned higher than the discharge port, the vent is provided with a first switch, and the discharge port is provided with a second switch; the draining step includes: opening the vent through the first switch and opening the discharge port through the second switch to drain the coolant in the connecting pipe from the discharge port.

[0112] In the above technical solution, the vent is opened by the first switch to balance the air pressure inside and outside the connecting pipe, and then the drain is opened by the second switch to release the coolant in the connecting pipe, which can easily and conveniently discharge the coolant in the connecting pipe.

[0113] Thirdly, this application also provides an installation method for an energy storage system. The installation method is used to install the aforementioned energy storage system. The thermal management module is connected to a first tube, which is at least partially disposed within the first compartment. The second battery device is connected to a second tube, which is at least partially disposed within the second compartment. The installation method includes: a stacking step: stacking the first compartment on top of the second compartment; and a connection step: connecting the first tube and the second tube.

[0114] As an optional technical solution in this application embodiment, the energy storage system further includes a connecting pipe; the connection step includes: connecting the first pipe body and the second pipe body through the connecting pipe.

[0115] In the above technical solution, by setting a connecting pipe, one end of the connecting pipe is used to be detachably connected to the first pipe body, and the other end of the connecting pipe is used to be detachably connected to the second pipe body, which helps to reduce the difficulty of installing the first pipe body and the second pipe body.

[0116] As an optional technical solution in this application embodiment, the first pipe body is provided with a first switching valve, and the second pipe body is provided with a second switching valve; after the connection step, the installation method of the energy storage system further includes: an opening step: opening the first switching valve and the second switching valve.

[0117] In the above technical solution, after connecting the connecting pipe to the first pipe body and the second pipe body, the first switch valve and the second switch valve can be opened to connect the first pipe body and the connecting pipe, and the second pipe body and the connecting pipe to facilitate coolant circulation. Attached Figure Description

[0118] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0119] Figure 1 is a schematic diagram of the energy storage system provided in some embodiments of this application;

[0120] Figure 2 is a schematic diagram of the internal structure of an energy storage system provided in some embodiments of this application;

[0121] Figure 3 is a schematic diagram of the energy storage system provided in some other embodiments of this application;

[0122] Figure 4 is a schematic diagram of the internal structure of an energy storage system provided in some other embodiments of this application;

[0123] Figure 5 is a schematic diagram of the structure of a thermal management module provided in some embodiments of this application;

[0124] Figure 6 is a schematic diagram of the arrangement of condensers and fans provided in some embodiments of this application;

[0125] Figure 7 is a schematic diagram of the structure of the first coolant circulation loop, the second coolant circulation loop, and the refrigerant circulation loop provided in some embodiments of this application;

[0126] Figure 8 is a schematic diagram of the structure of the pipeline connecting the thermal management module and the first battery device, and the pipeline connecting the thermal management module and the second battery device provided in some embodiments of this application;

[0127] Figure 9 is a schematic diagram of the structure of the main pipe passing through the isolation layer according to some embodiments of this application;

[0128] Figure 10 is a schematic diagram showing the connection of the first pipe, the connecting pipe and the second pipe provided in some embodiments of this application;

[0129] Figure 11 is a cross-sectional view of a first pipe body, a connecting pipe, and a second pipe body provided in some embodiments of this application;

[0130] Figure 12 is a schematic diagram showing the connection of the first tube, connecting tube, second tube, and drainage device provided in some embodiments of this application;

[0131] Figure 13 is a schematic diagram of the structure of the connecting pipe passing through the first bottom wall and the second top wall according to some embodiments of this application;

[0132] Figure 14 is a side view of the pipeline connecting the thermal management module and the first battery device, and the pipeline connecting the thermal management module and the second battery device, provided in some embodiments of this application.

[0133] Figure 15 is a schematic diagram of the control system in an energy storage system provided in some embodiments of this application;

[0134] Figure 16 is a schematic diagram of the control system in an energy storage system provided in some other embodiments of this application;

[0135] Figure 17 is a schematic block diagram of an energy storage system disassembly method provided in some embodiments of this application;

[0136] Figure 18 is a schematic block diagram of an energy storage system disassembly method provided in some other embodiments of this application;

[0137] Figure 19 is a schematic block diagram of a method for disassembling an energy storage system provided in some embodiments of this application;

[0138] Figure 20 is a schematic block diagram of a method for disassembling an energy storage system provided in some embodiments of this application;

[0139] Figure 21 is a schematic block diagram of an energy storage system disassembly method provided in some embodiments of this application;

[0140] Figure 22 is a schematic block diagram of an energy storage system installation method provided in some embodiments of this application;

[0141] Figure 23 is a schematic block diagram of an energy storage system installation method provided in some other embodiments of this application;

[0142] Figure 24 is a schematic block diagram of an energy storage system installation method provided in some embodiments of this application.

[0143] Icons: 10 - Energy storage system; 100 - First compartment; 110 - First top wall; 120 - First side wall; 130 - Ventilation opening; 140 - Isolation layer; 141 - First outlet; 142 - First flange; 143 - First seal; 150 - First sub-compartment; 160 - Second sub-compartment; 170 - First bottom wall; 171 - Second outlet; 180 - Connecting assembly; 181 - First connector; 1811 - First sealing part; 182 - Second connector; 182 1-Second sealing part; 183-Second sealing element; 200-Second compartment; 210-Second top wall; 211-Third outlet hole; 300-First battery device; 310-Battery cell; 320-Thermal management component; 400-Second battery device; 410-First coolant circulation loop; 420-Second coolant circulation loop; 500-Thermal management module; 510-Heat dissipation module; 511-Fan; 512-Condenser; 520-Housing shell; 521-Air inlet 522 - Air outlet; 530 - Pumping device; 540 - Heat exchanger; 550 - Compressor; 560 - Throttling device; 570 - Liquid receiver; 580 - Expansion tank; 590 - Refrigerant circulation loop; 600 - Protective frame; 610 - Crossbeam; 620 - Column; 710 - Main pipe; 711 - Second flange; 720 - First main pipe; 730 - Second main pipe; 731 - First pipe body; 732 - Second pipe body; 733 - Connecting pipe; 7331 - Insulation component; 73 4-First switching valve; 735-Second switching valve; 736-Vent port; 737-Discharge port; 7371-Drainage fixture; 738-First switching component; 739-Second switching component; 740-Replenishment pipe; 750-First branch; 760-Second branch; 810-Maintenance box; 820-Wire; 910-Control module; 920-First sub-control module; 930-Second sub-control module; 20-Disassembly method of energy storage system; 30-Installation method of energy storage system. Detailed Implementation

[0144] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0145] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0146] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0147] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0148] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0149] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0150] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in energy storage systems such as energy storage containers or energy storage cabinets. As the application fields of battery devices continue to expand, the requirements for the reliability of battery devices are also constantly increasing.

[0151] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0152] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0153] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0154] In some embodiments, the battery device may include one or more battery packs, and the battery packs may include one or more battery cell assemblies. As an example, the battery pack includes a housing and one or more battery cell assemblies, the battery cell assemblies being housed within the housing, for example, by a fixed manner. As yet another example, the battery device includes multiple battery packs, which may be connected in series, parallel, or in a mixed configuration.

[0155] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0156] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0157] In some embodiments, the battery device includes multiple battery packs that can constitute one or more battery clusters, thereby providing an energy storage system that includes one or more battery clusters to improve the voltage and capacity of the energy storage system. A battery cluster may include multiple battery packs, which are connected in series via a busbar to increase the voltage of the energy storage system. When the energy storage system includes multiple battery clusters, these clusters can be connected in series, in parallel, or in a hybrid configuration.

[0158] Energy storage systems can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. An energy storage system can store electrical energy as needed and output it when appropriate. For example, an energy storage system can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage.

[0159] In some embodiments, the energy storage system is an energy storage container or an energy storage cabinet.

[0160] In some embodiments, the energy storage system may include a housing and one or more battery clusters, with the battery clusters housed within the housing.

[0161] In some embodiments, the energy storage system may include modules such as a thermal management module, a sub-control module, a control module, a power distribution module, and a fire protection module.

[0162] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device via piping to regulate the temperature of the individual battery cells.

[0163] As an example, the sub-control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The sub-control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For example, it can control the charging and discharging current and voltage of the battery cluster. The sub-control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0164] As an example, the control module can serve as the battery management unit of an energy storage system, used to monitor and manage the system. The control module can monitor information such as current, voltage, power, state of charge, and temperature of the energy storage system. For instance, it can control the charging and discharging current and voltage of the energy storage system. As an example, the master control module includes modules such as the Insulation Monitoring Module (IMM), the Master Battery Management Unit (MBMU), the Ethernet (ETH) module, and the fiber optic conversion module.

[0165] As an example, a fire protection system includes control panels, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in energy storage systems.

[0166] As an example, the power distribution unit can be used to distribute power to the power modules of an energy storage system.

[0167] Power plants are demanding increasingly higher area energy density from energy storage systems. Since energy storage systems typically require thermal management modules to control the temperature of the battery cells within the system, these modules increase the system's footprint, thus reducing the energy density per unit area. This creates a conflict between increasing energy density and the need for thermal management modules.

[0168] Therefore, this application provides an energy storage system including a first compartment, a first battery device, a second compartment, a second battery device, and a thermal management module. The first compartment houses the first battery device, and the second compartment houses the second battery device. The first and second compartments are stacked along their height, with the first compartment located above the second compartment. The thermal management module manages the temperature of the first and second battery devices. The thermal management module includes a heat dissipation module located on top of the first compartment and covering at least a portion of the first battery device.

[0169] By configuring a first compartment and a second compartment, the first battery device is housed in the first compartment, and the second battery device is housed in the second compartment. These two compartments are stacked vertically, which reduces the footprint of the energy storage system, thereby increasing the energy density per unit area. Furthermore, the first and second compartments can be transported separately, reducing transportation difficulty and costs. The energy storage system uses a single thermal management module to manage the thermal performance of both the first and second battery devices. This reduces the number of thermal management modules required, lowers production costs, reduces space requirements, and improves the volumetric energy density. By placing the heat dissipation module on top of the first compartment, at least a portion of the thermal management module can share floor space with the container. With a fixed total energy, the energy storage system can have a smaller volume, resulting in a smaller footprint and increased energy density per unit area. On the other hand, fewer obstructions above the heat dissipation module improve its heat dissipation effect, enhance the thermal management module's heat dissipation efficiency, and reduce auxiliary power consumption. By covering at least part of the first battery device with the heat dissipation module, the impact of solar radiation on the temperature of the first battery device can be reduced, improving the temperature consistency between the first and second battery devices.

[0170] The energy storage system described in this application embodiment may include an energy storage container or an energy storage cabinet. The energy storage system may include a power converter system (PCS) for connecting between a power generation device and a battery device. The power generation device generates electrical energy, which can be stored in the battery device through the power converter. As an example, the power generation device may specifically be a solar panel, hydroelectric power generation equipment, thermal power generation equipment, wind power generation equipment, etc.

[0171] Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of an energy storage system 10 provided in some embodiments of this application. Figure 2 is a schematic diagram of the internal structure of an energy storage system 10 provided in some embodiments of this application. This application provides an energy storage system 10, which includes a first compartment 100, a first battery device 300, a second compartment 200, a second battery device 400, and a thermal management module 500. The first compartment 100 houses the first battery device 300, and the second compartment 200 houses the second battery device 400. The first compartment 100 and the second compartment 200 are stacked along their height, with the first compartment 100 located above the second compartment 200. The thermal management module 500 manages the temperature of the first battery device 300 and the second battery device 400. The thermal management module 500 includes a heat dissipation module 510, which is located on top of the first compartment 100 and covers at least a portion of the first battery device 300.

[0172] The first compartment 100 and the second compartment 200 are two different compartment structures in the energy storage system 10. Both can form a hollow structure, which serves as a space to house and protect the devices in the energy storage system 10. The first compartment 100 houses the first battery device 300, meaning that the first battery device 300 is located in the hollow structure formed by the first compartment 100. The first battery device 300 located in the hollow structure of the first compartment 100 can be connected to the wall of the first compartment 100 using bolts, rivets, connecting pins, or other connecting components. Alternatively, it can be first fixed to a shelf, and then the shelf can be connected to the wall of the first compartment 100 using bolts, rivets, connecting pins, or other connecting components. This reduces the possibility of the first battery device 300 moving due to shaking within the housing space of the first compartment 100, thus reducing the possibility of damage to the first battery device 300.

[0173] For example, the first battery device 300 may be a part of the battery devices in the energy storage system 10, which also includes other battery devices besides the first battery device 300. The first compartment 100 and other compartments are used together to house the battery devices in the energy storage system 10, with the first battery device 300 housed in the first compartment 100 and the other battery devices housed in the other compartments.

[0174] The second compartment 200 houses the second battery device 400. This means that the second battery device 400 is located in the hollow structure formed by the second compartment 200. The second battery device 400 located in the hollow structure of the second compartment 200 can be connected to the wall of the second compartment 200 using bolts, rivets, connecting pins, or other connecting components. Alternatively, it can be first fixed to a shelf, and then the shelf can be connected to the wall of the second compartment 200 using bolts, rivets, connecting pins, or other connecting components. This reduces the possibility of the second battery device 400 moving due to shaking in the housing space of the second compartment 200, and helps to reduce the possibility of damage to the second battery device 400.

[0175] Along the height direction, the first compartment 100 is stacked on top of the second compartment 200, and the second compartment 200 can support the first compartment 100, thereby helping to reduce the footprint of the energy storage system 10.

[0176] The thermal management module 500 is a component used for thermal management of the first battery device 300 and the second battery device 400. For example, when the temperature of the first battery device 300 and the second battery device 400 rises, the thermal management module 500 can cool the first battery device 300 and the second battery device 400, thereby lowering their temperatures. When the temperature of the first battery device 300 and the second battery device 400 decreases, the thermal management module 500 can heat the first battery device 300 and the second battery device 400, thereby raising their temperatures. In other words, the thermal management module 500 can maintain the temperatures of the first battery device 300 and the second battery device 400 within a certain range, allowing them to operate at a more suitable temperature, thus maximizing their performance.

[0177] The thermal management module 500 can be a liquid chiller, an air conditioner, a ground source cooling device, or a marine liquid cooling device.

[0178] The heat dissipation module 510 is a heat dissipation component in the thermal management module 500. For example, the heat dissipation module 510 may include a fan 511, a condenser 512, etc.

[0179] When the heat dissipation module 510 is located at the top of the first compartment 100, the heat dissipation module 510 can be located inside the first compartment 100 or outside the first compartment 100. The heat dissipation module 510 can also be located partly inside the first compartment 100 and partly outside the first compartment 100.

[0180] The heat dissipation module 510 is positioned above the first battery device 300 along the height direction, and the projection of the heat dissipation module 510 along the height direction at least partially covers the first battery device 300. The projection of the heat dissipation module 510 along the height direction may partially cover the first battery device 300, or it may completely cover the first battery device 300.

[0181] By configuring a first compartment 100 and a second compartment 200, the first battery device 300 is housed within the first compartment 100, and the second battery device 400 is housed within the second compartment 200. The first compartment 100 and the second compartment 200 are stacked along their height. This reduces the footprint of the energy storage system 10, thereby increasing the energy density per unit area and improving the area energy density of the energy storage system 10. Furthermore, the first compartment 100 and the second compartment 200 can be transported separately, reducing transportation difficulty and costs. The energy storage system 10 uses a thermal management module 500 to manage the thermal of the first battery device 300 and the second battery device 400. This reduces the number of thermal management modules 500 required, lowers the production cost of the energy storage system 10, reduces its space requirements, and ultimately improves its volumetric energy density. By placing the heat dissipation module 510 on top of the first compartment 100, at least a portion of the thermal management module 500 can share a floor space with the container. Given a fixed total energy of the energy storage system 10, the system can have a smaller volume, resulting in a smaller floor space and increased energy density per unit area. Furthermore, fewer obstructions above the heat dissipation module 510 improve its heat dissipation performance, thereby enhancing the thermal management module 500's efficiency and reducing auxiliary power consumption. By covering at least a portion of the first battery device 300 with the heat dissipation module 510, the temperature impact of solar radiation on the first battery device 300 can be reduced, improving the temperature consistency between the first battery device 300 and the second battery device 400.

[0182] Referring to Figures 1 and 2, in some embodiments, the heat dissipation module 510 is housed inside the first compartment 100.

[0183] The heat dissipation module 510 is fully housed inside the first compartment 100 and is located above the first battery device 300.

[0184] By housing the heat dissipation module 510 inside the first compartment 100, the integration of the energy storage system 10 can be improved. During transportation and assembly, the heat dissipation module 510 can be transported and assembled together with the first compartment 100, which helps to reduce transportation and assembly costs.

[0185] Referring to Figures 1 and 2, in some embodiments, the first compartment 100 includes an isolation layer 140 that separates the first compartment 100 into a first sub-compartment 150 and a second sub-compartment 160. Along the height direction, the first sub-compartment 150 is located on the side of the second sub-compartment 160 opposite to the second compartment 200. A heat dissipation module 510 is housed in the first sub-compartment 150, and a first battery device 300 is housed in the second sub-compartment 160.

[0186] The isolation layer 140 is a partition structure disposed within the first compartment 100. For example, the isolation layer 140 can be a metal plate.

[0187] The first sub-compartment 150 and the second sub-compartment 160 are stacked along the height direction, with the first sub-compartment 150 located above the second sub-compartment 160 and the second sub-compartment 160 located above the second compartment 200.

[0188] The first sub-compartment 150 is located above the second sub-compartment 160. The heat dissipation module 510 and the first battery device 300 are respectively housed in the first sub-compartment 150 and the second sub-compartment 160. This arrangement allows the heat dissipation module 510 to be located on top of the second sub-compartment 160, with no obstructions above it, which is beneficial for heat dissipation. The first sub-compartment 150 is separated from the second sub-compartment 160 by an isolation layer 140. The isolation layer 140 separates the heat dissipation module 510 and the first battery device 300, reducing interference from the thermal management module 500 to the first battery device 300, and also reducing the thermal impact of external rain or sunlight on the first battery device 300.

[0189] The insulating layer 140 separates the heat dissipation module 510 and the first battery device 300. On the one hand, this helps reduce the risk of interference between the heat dissipation module 510 and the first battery device 300, thereby improving the reliability of the energy storage system 10. On the other hand, the heat from the heat dissipation module 510 is less likely to be transferred to the first battery device 300, thus minimizing its impact.

[0190] Referring to Figures 1 and 2, in some embodiments, the first compartment 100 has a first top wall 110 and a first side wall 120. The first top wall 110 is connected to the top of the first side wall 120. Along the height direction, the first top wall 110 is located on the side of the isolation layer 140 away from the second compartment 200. The first top wall 110 and / or the first side wall 120 are provided with ventilation openings 130 for ventilation of the heat dissipation module 510.

[0191] In the embodiment where the isolation layer 140 divides the first compartment 100 into a first sub-compartment 150 and a second sub-compartment 160, the first top wall 110 is located on top of the first sub-compartment 150, and the first top wall 110 may be provided with a ventilation opening 130. This opening may be a full-length opening of the first top wall 110 to form a ventilation opening 130. Alternatively, it may be a partial opening of the first top wall 110 to form a ventilation opening 130; for example, an opening may be provided on one side of the first top wall 110 along its length, so that a portion of the first top wall 110 forms a ventilation opening 130.

[0192] The first sub-compartment 150 and the second sub-compartment 160 may share the first side wall 120. The first side wall 120 located at the first sub-compartment 150 may be provided with a ventilation opening 130. The first compartment body 100 includes multiple first side walls 120, which surround the first top wall 110. All the first side walls 120 may have ventilation openings 130, or only a portion of the first side walls 120 may have ventilation openings 130.

[0193] Ventilation port 130 is used for ventilation of heat dissipation module 510 to improve the heat dissipation effect of heat dissipation module 510.

[0194] By providing ventilation openings 130 in the first top wall 110 and / or the first side wall 120, the heat dissipation module 510 is facilitated, enabling the heat dissipation module 510 to have more heat dissipation channels and improving the temperature control effect of the thermal management module 500.

[0195] In some embodiments, the thermal management module 500 is housed within the first sub-compartment 150.

[0196] The thermal management module 500 is fully housed inside the first compartment 100 and is located above the first battery device 300. Along the height direction, the orthographic projection of the thermal management module 500 at least partially covers the first battery device 300.

[0197] By housing the thermal management module 500 within the first sub-compartment 150, the integration of the energy storage system 10 is further improved. During transportation and assembly, the thermal management module 500 can be transported and assembled together with the first compartment 100, which helps reduce transportation and assembly costs. Furthermore, the thermal management module 500 and the first battery device 300 are located in the first sub-compartment 150 and the second sub-compartment 160, respectively, which helps reduce the risk of interference between the thermal management module 500 and the first battery device 300, thereby improving the reliability of the energy storage system 10.

[0198] Please refer to Figures 3 and 4. Figure 3 is a structural schematic diagram of the energy storage system 10 provided in some embodiments of this application. Figure 4 is a schematic diagram of the internal structure of the energy storage system 10 provided in some embodiments of this application. In some embodiments, the heat dissipation module 510 is disposed on the outside of the first compartment 100.

[0199] The heat dissipation module 510 is located entirely outside the first compartment 100 and above the first battery device 300.

[0200] By placing the heat dissipation module 510 on the outside of the first compartment 100, it is beneficial to simplify manufacturing and reduce manufacturing costs.

[0201] Referring to Figures 3 and 4, in some embodiments, the first compartment 100 includes an isolation layer 140, the energy storage system 10 includes a protective frame 600, the protective frame 600 is detachably connected to the isolation layer 140, and the heat dissipation module 510 is disposed inside the protective frame 600.

[0202] The isolation layer 140 separates the internal space of the first compartment 100 from the internal space of the protective frame 600. Referring to Figures 3 and 4, in the embodiment shown in the figures, the isolation layer 140 is the first top wall 110 of the first compartment 100.

[0203] "Detachable connection" refers to a connection method in which the connecting parts and the connected parts remain undamaged and maintain their original connection quality even after repeated assembly and disassembly. For example, the protective frame 600 can be bolted to the isolation layer 140.

[0204] By setting a protective frame 600 on the isolation layer 140 and placing the heat dissipation module 510 inside the protective frame 600, the protective frame 600 can protect the heat dissipation module 510 and reduce the risk of the heat dissipation module 510 being damaged by falling objects.

[0205] In some embodiments, the thermal management module 500 is disposed within the protective frame 600.

[0206] The thermal management module 500 is fully housed within the protective frame 600 and is at least partially located above the first battery device 300. Along the height direction, the orthographic projection of the thermal management module 500 at least partially covers the first battery device 300.

[0207] The thermal management module 500 and the first battery device 300 are located in the protective frame 600 and the first compartment 100, respectively, which helps to reduce the risk of interference between the thermal management module 500 and the first battery device 300, thereby improving the reliability of the energy storage system 10.

[0208] Referring to Figures 3 and 4, in some embodiments, the protective frame 600 includes a crossbeam 610 and a plurality of uprights 620. The plurality of uprights 620 are spaced apart circumferentially along the isolation layer 140, and the crossbeam 610 connects the plurality of uprights 620. One end of each upright 620 is detachably connected to the isolation layer 140, and the other end is detachably connected to the crossbeam 610. Along the direction from the second compartment 200 to the first compartment 100, the thermal management module 500 does not extend beyond the upper surface of the crossbeam 610.

[0209] Both the beam 610 and the column 620 are columnar structures. For example, both the beam 610 and the column 620 can be prisms. To reduce the weight of the protective frame 600, both the beam 610 and the column 620 can be hollow structures.

[0210] The protective frame 600 is formed by splicing crossbeams 610 and columns 620, making the protective frame 600 a frame structure. The frame structure has multiple ventilation openings 130, which can ventilate the thermal management module 500, so that the thermal management module 500 has a good heat dissipation effect.

[0211] One end of the column 620 is detachably connected to the isolation layer 140, and the other end of the column 620 is detachably connected to the crossbeam 610, so that both the column 620 and the crossbeam 610 can be removed. This makes it easier to stack and transport, which helps to reduce the difficulty of transportation and reduce transportation costs.

[0212] "In the direction from the second compartment 200 to the first compartment 100, the thermal management module 500 does not extend beyond the upper surface of the crossbeam 610." That is, the thermal management module 500 is located below the upper surface of the crossbeam 610, or the surface of the thermal management module 500 furthest from the second compartment 200 along the height direction is flush with the upper surface of the crossbeam 610.

[0213] The protective frame 600 includes a crossbeam 610 and multiple uprights 620. The uprights 620 are detachably connected to the isolation layer 140, and the crossbeams 610 are detachably connected to the uprights 620. During transportation, the uprights 620 and crossbeams 610 can be removed, facilitating stacking and transportation, reducing transportation difficulty and costs. By ensuring that the thermal management module 500 does not extend beyond the upper surface of the crossbeam 610 in the direction from the second compartment 200 to the first compartment 100, the protective effect of the protective frame 600 on the thermal management module 500 is improved, reducing the risk of damage to the thermal management module 500 and enhancing the reliability of the energy storage system 10.

[0214] Referring to Figures 3 and 4, in some embodiments, the height of the thermal management module 500 is lower than the height of the column 620.

[0215] "The height of the thermal management module 500 is lower than the height of the column 620", which means that the maximum height of the thermal management module 500 is less than the minimum height of the column 620.

[0216] By making the height of the thermal management module 500 lower than the height of the column 620, it is beneficial to reduce the risk of interference between the thermal management module 500 and the crossbeam 610, and to improve the protective effect of the protective frame 600 on the thermal management module 500.

[0217] In some embodiments, the dimension of the protective frame 600 along its length direction is the same as the dimension of the first compartment 100 along its length direction, and the dimension of the protective frame 600 along its width direction is the same as the dimension of the first compartment 100 along its width direction.

[0218] "The dimension of the protective frame 600 along its length direction is the same as the dimension of the first compartment 100 along its length direction, and the dimension of the protective frame 600 along its width direction is the same as the dimension of the first compartment 100 along its width direction." That is, the length of the protective frame 600 is equal to the length of the first compartment 100, and the width of the protective frame 600 is equal to the width of the first compartment 100.

[0219] It should be noted that the length of the protective frame 600 is the same as the length of the first compartment 100. This does not mean that the length of the protective frame 600 is exactly equal to the length of the first compartment 100, but rather that the difference between the length of the protective frame 600 and the length of the first compartment 100 is less than 5% of the length of the first compartment 100. Similarly, the width of the protective frame 600 is the same as the width of the first compartment 100. This does not mean that the width of the protective frame 600 is exactly equal to the width of the first compartment 100, but rather that the difference between the width of the protective frame 600 and the width of the first compartment 100 is less than 5% of the width of the first compartment 100.

[0220] By aligning the length of the protective frame 600 with the length of the first compartment 100, and the width of the protective frame 600 with the width of the first compartment 100, the protective frame 600 gains a larger internal space, facilitating the accommodation of the thermal management components 320. Furthermore, the protective frame 600 can be transported together with the first compartment 100, reducing transportation costs.

[0221] Please refer to Figures 1, 2, and 5. Figure 5 is a schematic diagram of the structure of a thermal management module 500 provided in some embodiments of this application. In some embodiments, the thermal management module 500 includes a housing 520, and a heat dissipation module 510 is disposed within the housing 520. An air inlet 521 is provided on one side of the housing 520 along a first direction, and an air outlet 522 is provided on the top wall of the housing 520. The first direction is perpendicular to the height direction.

[0222] The housing 520 has a receiving space, in which the heat dissipation module 510 is housed. The housing 520 can protect the heat dissipation module 510 and reduce the risk of damage to the heat dissipation module 510.

[0223] The first direction is perpendicular to the height direction. For example, the first direction can be parallel to the length direction of the first compartment 100. Alternatively, the first direction can be parallel to the width direction of the first compartment 100. Referring to Figure 5, the first direction can be the Y direction shown in the figure; in this case, the first direction is parallel to the width direction of the first compartment 100.

[0224] An air inlet 521 is provided on one side of the housing 520 along the first direction, for the intake of air into the heat dissipation module 510. The top wall of the housing 520 is the part of the housing 520 furthest from the second compartment 200 along the height direction. An air outlet 522 is provided on the top wall of the housing 520 for the exhaust of air from the heat dissipation module 510.

[0225] The housing 520 has an air inlet 521 on one side along the first direction, allowing the heat dissipation module 510 to receive air from the side. The top wall of the housing 520 has an air outlet 522, allowing the heat dissipation module 510 to exhaust air from the top wall. This improves the heat dissipation effect of the heat dissipation module 510 and reduces its thermal impact on surrounding components.

[0226] Referring to Figures 1, 2, and 5, in some embodiments, the first compartment 100 has a first top wall 110 and a first side wall 120. The first top wall 110 is connected to the top of the first side wall 120, and both the first top wall 110 and the first side wall 120 are provided with ventilation openings 130. The ventilation opening 130 provided in the first top wall 110 is connected to the air outlet 522, and the ventilation opening 130 provided in the first side wall 120 is connected to the air inlet 521.

[0227] In the embodiment where the thermal management module 500 is housed within the first compartment 100, both the first top wall 110 and the first side wall 120 of the first compartment 100 are provided with ventilation openings 130. The ventilation opening 130 on the first side wall 120 is connected to the air inlet 521 to allow air to enter the heat dissipation module 510 from the side, while the ventilation opening 130 on the first top wall 110 is connected to the air outlet 522 to allow air to exit from the top surface of the heat dissipation module 510.

[0228] When the heat dissipation module 510 is housed in the first compartment 100, ventilation openings 130 are provided on the first top wall 110 and the first side wall 120 of the first compartment 100, so that the ventilation opening 130 provided on the first top wall 110 is connected to the air outlet 522, and the ventilation opening 130 provided on the first side wall 120 is connected to the air inlet 521, thereby facilitating the intake and exhaust of air for the heat dissipation module 510 and improving the heat dissipation effect of the heat dissipation module 510.

[0229] Please refer to Figures 1, 2, 5, and 6. Figure 5 is a structural schematic diagram of a thermal management module 500 provided in some embodiments of this application. Figure 6 is a schematic diagram of the arrangement of a condenser 512 and a fan 511 provided in some embodiments of this application. In some embodiments, the heat dissipation module 510 includes a fan 511 and a condenser 512. Along a first direction, the condenser 512 is disposed between the air inlet 521 and the fan 511, and the fan 511 is used to dissipate heat from the condenser 512.

[0230] The condenser 512 is a type of heat exchanger 540 that converts gas or vapor into liquid, rapidly transferring its heat to the surrounding air. The operation of the condenser 512 is exothermic, resulting in a relatively high temperature. The fan 511 dissipates heat from the condenser 512, thus helping to lower its temperature.

[0231] Along the first direction, the air inlet 521, the condenser 512 and the fan 511 are arranged in sequence, that is, the condenser 512 and the fan 511 are arranged side by side, rather than stacked along the height direction.

[0232] By arranging the condenser 512 between the air inlet 521 and the fan 511 along the first direction, that is, the condenser 512 and the fan 511 are arranged side by side, it is beneficial to reduce the height of the casing 520.

[0233] Referring to Figures 1, 2, 5 and 6, in some embodiments, the condenser 512 is disposed at an angle within the housing 520.

[0234] "The condenser 512 is tilted inside the housing 520" means that the condenser 512 is at an angle to the height direction, and the condenser 512 is tilted inside the housing 520.

[0235] By tilting the condenser 512 inside the housing 520, it is beneficial to further reduce the height of the housing 520.

[0236] Referring to Figures 1, 2, 5, and 6, in some embodiments, the thermal management module 500 includes a housing 520, and the heat dissipation module 510 is disposed within the housing 520. Along the height direction, the dimensions of the housing 520 are greater than or equal to 300 mm and less than or equal to 550 mm.

[0237] The dimension of the housing 520 along the height direction is also the thickness of the housing 520. During measurement, the distance between the upper and lower surfaces of the housing 520 can be measured as the thickness of the housing 520. Please refer to Figures 2 and 6, where H1 indicates the dimension of the housing 520 along the height direction, i.e., 300mm ≤ H1 ≤ 550mm.

[0238] H1 can be 300mm, 320mm, 350mm, 380mm, 400mm, 420mm, 450mm, 480mm, 500mm, 520mm, 550mm, etc.

[0239] When the dimension of the housing 520 along the height direction is greater than or equal to 300mm, the housing 520 is relatively tall, and the internal space of the housing 520 is relatively large, which facilitates the accommodation of the heat dissipation module 510. When the dimension of the housing 520 along the height direction is less than or equal to 550mm, the height of the housing 520 is not too large, which helps to reduce the space occupied by the housing 520 in the height direction and lower the overall center of gravity of the energy storage system 10.

[0240] Please refer to Figure 7, which is a schematic diagram of the structure of a first coolant circulation loop 410, a second coolant circulation loop 420, and a refrigerant circulation loop 590 provided in some embodiments of this application. In some embodiments, both the first battery device 300 and the second battery device 400 include a thermal management component 320, and the heat dissipation module 510 includes a condenser 512. The thermal management module 500 also includes a pumping device 530, a heat exchanger 540, a compressor 550, and a throttling device 560. The pumping device 530, the heat exchanger 540, and the thermal management component 320 of the first battery device 300 are connected to form the first coolant circulation loop 410. The pumping device 530, the heat exchanger 540, and the thermal management component 320 of the second battery device 400 are connected to form the second coolant circulation loop 420. The compressor 550, the condenser 512, the throttling device 560, and the heat exchanger 540 are connected to form the refrigerant circulation loop 590.

[0241] Both the first battery device 300 and the second battery device 400 include a thermal management component 320 and a battery cell 310, wherein the thermal management component 320 is used to manage the temperature of the battery cell 310.

[0242] The thermal management component 320 can be plate-shaped or tubular, etc. The thermal management component 320 has a flow channel inside, which can be used to introduce coolant to heat or cool the battery cell 310.

[0243] When the first battery device 300 and the second battery device 400 are battery modules, the thermal management component 320 can be the bottom plate, top plate or side plate of the battery module, or it can be located between adjacent battery cells 310.

[0244] When the first battery device 300 and the second battery device 400 are battery packs, the thermal management component 320 can be part of the housing or located within the housing's containment space. The thermal management component 320 can also be located between adjacent battery cells 310.

[0245] Optionally, the thermal management component 320 is a water-cooled plate, in which case the coolant can be water, other fluids, or a mixture of water and other fluids.

[0246] The pumping device 530, heat exchanger 540, thermal management component 320 of the first battery device 300, and pumping device 530 can be connected in sequence to form a first coolant circulation loop 410. Of course, the connection order of the pumping device 530, heat exchanger 540, thermal management component 320 of the first battery device 300, and pumping device 530 is not limited to this; it can be any other reasonable connection order. For example, the pumping device 530, thermal management component 320 of the first battery device 300, heat exchanger 540, and pumping device 530 can be connected in sequence to form a first coolant circulation loop 410.

[0247] The pumping device 530, heat exchanger 540, thermal management component 320 of the second battery device 400, and pumping device 530 can be connected in sequence to form a second coolant circulation loop 420. Of course, the connection order of the pumping device 530, heat exchanger 540, thermal management component 320 of the second battery device 400, and pumping device 530 is not limited to this; it can be any other reasonable connection order. For example, the pumping device 530, thermal management component 320 of the second battery device 400, heat exchanger 540, and pumping device 530 can be connected in sequence to form a second coolant circulation loop 420.

[0248] It should be noted that the pumping device 530 (also known as a water pump) is a component used to transport the coolant. The heat exchanger 540 is a component used to exchange heat with the coolant flowing through it. The heat exchanger 540 can be, but is not limited to, a plate heat exchanger, a shell-and-tube heat exchanger, an air cooler, a spiral plate heat exchanger, a heat exchange tube bundle, etc. The coolant can be, but is not limited to, a mixture of ethylene glycol and water.

[0249] Under the pumping action of the pumping device 530, the coolant can circulate in the first coolant circulation loop 410 and the second coolant circulation loop 420. It should be noted that the first coolant circulation loop 410 and the second coolant circulation loop 420 can share the pumping device 530 and the heat exchanger 540. The connection can be direct or indirect via pipelines.

[0250] By adopting the above scheme, the coolant can circulate through the thermal management component 320 to exchange heat with the battery cell 310 and cool the battery cell 310; the coolant after exchanging heat with the battery cell 310 can also circulate through the heat exchanger 540 and exchange heat with the heat exchanger 540, and exchange the heat exchanged from the battery cell 310 to the heat exchanger 540, so that the coolant is cooled down.

[0251] The compressor 550, condenser 512, throttling device 560, heat exchanger 540, and compressor 550 are connected to form a refrigerant circulation loop 590. Of course, the connection order of compressor 550, condenser 512, throttling device 560, heat exchanger 540, and compressor 550 is not limited to this and can be any other reasonable connection order.

[0252] It should be noted that the above connections can be direct or indirect via piping. Compressor 550 provides power for the refrigerant circulation and cools the refrigerant. Throttling device 560 is used for cooling and pressure reduction; it can be, but is not limited to, a throttling valve or expansion valve. Condenser 512 is used for heat exchange with the refrigerant flowing through it. Heat exchanger 540 can be, but is not limited to, a plate heat exchanger, a shell-and-tube heat exchanger, an air cooler, a spiral plate heat exchanger, or a heat exchange tube bundle. The refrigerant has a low boiling point and heat of vaporization, allowing it to evaporate and condense at relatively low temperatures. It achieves a cooling 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.

[0253] The heat exchanger 540 is located in both the first coolant circulation loop 410 and the second coolant circulation loop 420, as well as in the refrigerant circulation loop 590. The heat exchanger 540 internally contains coolant and refrigerant channels. The coolant channels participate in forming the first and second coolant circulation loops 410 and 420, allowing coolant to flow through them. The refrigerant channels participate in forming the refrigerant circulation loop 590, allowing refrigerant to flow through them. The coolant and refrigerant channels are not interconnected to prevent mixing. In the heat exchanger 540, the coolant and refrigerant can exchange heat, particularly the heat from the coolant, enabling the heat exchanger 540 to cool the coolant flowing through it.

[0254] The thermal management module 500 also includes a fan 511, which dissipates heat from the condenser 512.

[0255] The pumping device 530, heat exchanger 540, compressor 550, condenser 512 and throttling device 560 are all housed in the first sub-compartment 150.

[0256] In some embodiments, the thermal management module 500 further includes a receiver tank 570 for containing refrigerant. The compressor 550, condenser 512, receiver tank 570, throttling device 560, heat exchanger 540, and compressor 550 are connected to form a refrigerant circulation loop 590. Of course, the connection order of the compressor 550, condenser 512, receiver tank 570, throttling device 560, heat exchanger 540, and compressor 550 is not limited to this and can be any other reasonable connection order.

[0257] The first coolant circulation loop 410 can perform thermal management on the battery cells 310 in the first battery device 300, the second coolant circulation loop 420 can perform thermal management on the battery cells 310 in the second battery device 400, and the refrigerant circulation loop 590 can cool down the coolant passing through the heat exchanger 540, thus providing a good cooling effect on the battery cells 310.

[0258] Please refer again to Figures 1, 2, 3, and 4. The first compartment 100 includes an insulating layer 140, with the first battery device 300 and the thermal management module 500 located on opposite sides of the insulating layer 140. Along the height direction, the thermal management module 500 is located on the side of the insulating layer 140 facing away from the second compartment 200.

[0259] Referring to Figures 1 and 2, in the embodiment where the thermal management module 500 is housed within the first compartment 100, the isolation layer 140 is a partition structure disposed within the first compartment 100.

[0260] Referring to Figures 3 and 4, in the embodiment where the thermal management module 500 is located outside the first compartment 100, the isolation layer 140 is the first top wall 110 of the first compartment 100.

[0261] Along the height direction, the first battery device 300 and the thermal management module 500 are located on both sides of the isolation layer 140, with the thermal management module 500 located above the isolation layer 140 and the first battery device 300 located below the isolation layer 140, so that the thermal management module 500 can be at least partially located above the first battery device 300.

[0262] The isolation layer 140 separates the thermal management module 500 and the first battery device 300, which helps to reduce the risk of interference between the thermal management module 500 and the first battery device 300, thereby improving the reliability of the energy storage system 10.

[0263] Please refer to Figures 1, 2, 3, 4, 8, and 9. Figure 8 is a schematic diagram of the pipes connecting the thermal management module 500 to the first battery device 300 and the pipes connecting the thermal management module 500 to the second battery device 400 according to some embodiments of this application. Figure 9 is a schematic diagram of the main pipe 710 passing through the isolation layer 140 according to some embodiments of this application. In some embodiments, both the first battery device 300 and the second battery device 400 include a thermal management component 320, and the isolation layer 140 is provided with a first outlet hole 141. The energy storage system 10 includes a main pipe 710, a first main pipe 720, and a second main pipe 730. One end of the main pipe 710 is connected to the thermal management module 500, and the other end of the main pipe 710 passes through the first outlet hole 141 and is connected to the first main pipe 720 and the second main pipe 730. The first main pipe 720 is connected to the thermal management component 320 of the first battery device 300, and the second main pipe 730 is connected to the thermal management component 320 of the second battery device 400.

[0264] The first outlet hole 141 is a through hole provided in the isolation layer 140, and the first outlet hole 141 penetrates the isolation layer 140 along the height direction. The first outlet hole 141 is used to pass through the main pipe 710.

[0265] It is understandable that the main pipe 710, the first main pipe 720, and the second main pipe 730 of the energy storage system 10 belong to one piping system. The energy storage system 10 has two piping systems. One piping system serves as the liquid inlet channel of the thermal management component 320, and the other piping system serves as the liquid outlet channel of the thermal management component 320. The two piping systems have the same structure. The following explanation uses the liquid inlet pipe of the energy storage system 10 as an example.

[0266] The main pipe 710 connects the thermal management module 500, the first main pipe 720, and the second main pipe 730. A portion of the main pipe 710 passes through the first outlet hole 141. One end of the main pipe 710 is connected to the thermal management module 500, and the other end of the main pipe 710 passes through the first outlet hole 141 and is connected to the first main pipe 720 and the second main pipe 730, so that the coolant output by the thermal management module 500 is distributed to the first main pipe 720 and the second main pipe 730 through the main pipe 710.

[0267] The first main pipe 720 connects the main pipe 710 and the thermal management component 320 of the first battery device 300. The coolant output by the thermal management module 500 can flow into the thermal management component 320 of the first battery device 300 through the main pipe 710 and the first main pipe 720 to exchange heat with the battery cells 310 of the first battery device 300.

[0268] The second main pipe 730 connects to the main pipe 710 and the thermal management component 320 of the second battery device 400. The coolant output by the thermal management module 500 can flow into the thermal management component 320 of the second battery device 400 through the main pipe 710 and the second main pipe 730 to exchange heat with the battery cells 310 of the second battery device 400.

[0269] One end of the main pipe 710 is connected to the thermal management module 500, and the other end of the main pipe 710 passes through the first lead-out hole 141 and is connected to the first main pipe 720 and the second main pipe 730. In this way, only the main pipe 710 needs to pass through the isolation layer 140, while the first main pipe 720 and the second main pipe 730 do not need to pass through the isolation layer 140, which helps to reduce the number of holes.

[0270] Referring to Figures 1, 2, 3, 4, 8, and 9, in some embodiments, the first compartment 100 houses a plurality of first battery devices 300 arranged in rows and columns. The plurality of first battery devices 300 in each row are arranged along the length of the first compartment 100, and the plurality of first battery devices 300 in each column are arranged along the height. The energy storage system 10 also includes a plurality of first branches 750, each first branch 750 communicating with a thermal management component 320 of a column of the plurality of first battery devices 300. A first main pipe 720 communicates with the plurality of first branches 750 and a main pipe 710. And / or the second compartment 200 houses a plurality of second battery devices 400 arranged in rows and columns. The plurality of second battery devices 400 in each row are arranged along the length of the second compartment 200, and the plurality of second battery devices 400 in each column are arranged along the height. The energy storage system 10 also includes a plurality of second branches 760, each second branch 760 being connected to a thermal management component 320 of a plurality of second battery devices 400 in a row, and a second main pipe 730 being connected to the plurality of second branches 760 and the main pipe 710.

[0271] The first compartment 100 contains multiple rows of first battery devices 300. Each row of first battery devices 300 includes multiple first battery devices 300, which are arranged along the height direction and connected in series to form a battery cluster. In other words, the first compartment 100 contains multiple battery clusters, which are arranged along the length direction of the first compartment 100.

[0272] The first branch 750 is used to connect the first main pipe 720 and the thermal management components 320 of multiple first battery devices 300 in a battery cluster. The coolant output by the thermal management module 500 can be distributed through the main pipe 710, the first main pipe 720, and the first branch 750 to the thermal management components 320 of multiple first battery devices 300 in a battery cluster to exchange heat with the individual battery cells 310 of the first battery devices 300.

[0273] The second compartment 200 contains multiple rows of second battery devices 400. Each row of second battery devices 400 includes multiple second battery devices 400, which are arranged along the height direction and connected in series to form a battery cluster. In other words, the second compartment 200 contains multiple battery clusters, which are arranged along the length direction of the second compartment 200.

[0274] The second branch 760 is used to connect the second main pipe 730 and the thermal management components 320 of multiple second battery devices 400 in a battery cluster. The coolant output by the thermal management module 500 can be distributed through the main pipe 710, the second main pipe 730, and the second branch 760 to the thermal management components 320 of the multiple second battery devices 400 in a battery cluster to exchange heat with the battery cells 310 of the second battery devices 400.

[0275] The first main pipe 720 connects to multiple first branch pipes 750 and the main pipe 710. Each first branch pipe 750 is connected to the thermal management components 320 of multiple first battery devices 300 in a row. The thermal management module 500 can provide coolant to the main pipe 710. The coolant is supplied to the thermal management components 320 of multiple first battery devices 300 through the main pipe 710, the first main pipe 720 and the multiple first branch pipes 750, so that the temperature of the coolant entering the thermal management components 320 of multiple first battery devices 300 is more uniform, reducing the risk of temperature runaway of battery cells 310. Similarly, the second main pipe 730 connects to multiple second branches 760 and the main pipe 710. Each second branch 760 is connected to the thermal management components 320 of multiple second battery devices 400 in a row. The thermal management module 500 can provide coolant to the main pipe 710. The coolant is supplied to the thermal management components 320 of multiple second battery devices 400 through the main pipe 710, the second main pipe 730 and the multiple second branches 760, making the temperature of the coolant entering the thermal management components 320 of multiple second battery devices 400 more uniform and reducing the risk of temperature runaway of battery cells 310.

[0276] Referring to Figures 1, 2, 3, 4, 8, and 9, in some embodiments, the energy storage system 10 includes a first seal 143, which seals a main pipe 710 and an isolation layer 140.

[0277] The first seal 143 is used to seal the gap between the main pipe 710 and the isolation layer 140.

[0278] The first sealing element 143 is a structure capable of achieving a sealing function, such as sealant, gasket, or sealing sheet.

[0279] By providing a first seal 143, the main pipe 710 and the insulating layer 140 can be sealed, reducing the risk of rainwater and other liquids entering the side of the insulating layer 140 facing the first battery device 300.

[0280] Referring to Figures 1, 2, 3, 4, 8, and 9, in some embodiments, the isolation layer 140 is provided with a first flange 142, which is sealed to the isolation layer 140. The main pipe 710 is provided with a second flange 711, which is sealed to the main pipe 710. Both the first flange 142 and the second flange 711 are arranged around the main pipe 710, and a first sealing element 143 is disposed between the first flange 142 and the second flange 711.

[0281] The first flange 142 can be partially accommodated in the first outlet hole 141. The first flange 142 can be welded to the isolation layer 140 to achieve a sealed connection between the first flange 142 and the isolation layer 140.

[0282] The second flange 711 can be a slip-on flange, a welding flange, a socket flange, a loose flange, a threaded flange, or an integral flange. The second flange 711 is sealed to the main pipe 710 to reduce the risk of rainwater or other liquids entering the first compartment 100 through the gap between the second flange 711 and the main pipe 710.

[0283] The first flange 142 and the second flange 711 are both arranged around the outside of the main pipe 710, and the first sealing element 143 is clamped between the first flange 142 and the second flange 711. Referring to Figure 9, in the embodiment shown in the figure, the first flange 142 and the second flange 711 are bolted together, and the first sealing element 143 is clamped between the first flange 142 and the second flange 711.

[0284] The first flange 142 and the insulating layer 140 are sealed together to reduce the risk of rainwater or other liquids entering the insulating layer 140 facing the first battery device 300 through the gap between the first flange 142 and the insulating layer 140. The second flange 711 is sealed together with the main pipe 710 to reduce the risk of rainwater or other liquids entering the insulating layer 140 facing the first battery device 300 through the gap between the second flange 711 and the main pipe 710. A first seal 143 is disposed between the first flange 142 and the second flange 711 to reduce the risk of rainwater or other liquids entering the insulating layer 140 facing the first battery device 300 through the gap between the first flange 142 and the second flange 711.

[0285] Please refer to Figures 1, 2, 3, 4, 8, 10, and 11. Figure 10 is a schematic diagram showing the connection between the first tube 731, the connecting tube 733, and the second tube 732 according to some embodiments of this application. Figure 11 is a cross-sectional view of the first tube 731, the connecting tube 733, and the second tube 732 according to some embodiments of this application. In some embodiments, the second main tube 730 includes the first tube 731 and the second tube 732. The first tube 731 is at least partially disposed within the first compartment 100 and is connected to the main tube 710. The second tube 732 is at least partially disposed within the second compartment 200 and is connected to the thermal management component 320 of the second battery device 400. The first tube 731 and the second tube 732 are detachably connected.

[0286] The first tube 731 can be partially housed inside the first compartment 100 and partially housed outside the first compartment 100, or it can be completely housed inside the first compartment 100. One end of the first tube 731 is connected to the main tube 710, and the other end of the first tube 731 is used to connect to the second tube 732.

[0287] The second tube 732 can be partially housed inside the second compartment 200 and partially housed outside the second compartment 200, or it can be completely housed inside the second compartment 200. One end of the second tube 732 is connected to the thermal management component 320 of the second battery device 400, and the other end of the second tube 732 is used to connect to the first tube 731.

[0288] In some embodiments, the first tube 731 and the second tube 732 can be mated together and locked by a clamp to achieve a detachable connection. To improve the sealing performance of the first tube 731 and the second tube 732, a sealing element can be provided on the outer side of the mating position of the first tube 731 and the second tube 732 and on the inner side of the clamp.

[0289] In other embodiments, the first tube 731 and the second tube 732 can be inserted into each other to achieve a detachable connection. To improve the tightness of the connection between the first tube 731 and the second tube 732, they can be locked with clamps after being inserted into each other.

[0290] The first tube 731 and the second tube 732 are detachably connected. During transportation, the first tube 731 and the second tube 732 can be separated, which facilitates the separate transportation of the first compartment 100 and the second compartment 200, thereby reducing transportation difficulty and transportation costs.

[0291] Please refer to Figures 1, 2, 3, 4, 8, 10 and 11. In some embodiments, the second main pipe 730 further includes a connecting pipe 733, and the first pipe body 731 and the second pipe body 732 are detachably connected through the connecting pipe 733.

[0292] The connecting pipe 733 is a pipe structure used to connect the first pipe body 731 and the second pipe body 732. One end of the connecting pipe 733 is detachably connected to the first pipe body 731, and the other end of the connecting pipe 733 is detachably connected to the second pipe body 732.

[0293] In some embodiments, one end of the connecting pipe 733 is mated with the first pipe body 731 and locked by a clamp to achieve a detachable connection between the connecting pipe 733 and the first pipe body 731. To improve the sealing performance between the connecting pipe 733 and the first pipe body 731, a sealing element can be provided on the outer side of the mating position between the connecting pipe 733 and the first pipe body 731 and on the inner side of the clamp. The other end of the connecting pipe 733 is mated with the second pipe body 732 and locked by a clamp to achieve a detachable connection between the connecting pipe 733 and the second pipe body 732. To improve the sealing performance between the connecting pipe 733 and the second pipe body 732, a sealing element can be provided on the outer side of the mating position between the connecting pipe 733 and the second pipe body 732 and on the inner side of the clamp.

[0294] In other embodiments, one end of the connecting pipe 733 is inserted into the first pipe body 731. To improve the tightness of the connection between the connecting pipe 733 and the first pipe body 731, a clamp can be used to lock the connection after insertion. The other end of the connecting pipe 733 is inserted into the second pipe body 732. To improve the tightness of the connection between the connecting pipe 733 and the second pipe body 732, a clamp can be used to lock the connection after insertion.

[0295] By setting a connecting pipe 733, one end of the connecting pipe 733 is detachably connected to the first pipe body 731, and the other end of the connecting pipe 733 is detachably connected to the second pipe body 732, which helps to reduce the difficulty of separating the first pipe body 731 and the second pipe body 732.

[0296] Referring to Figures 1, 2, 3, 4, 8, 10, and 11, in some embodiments, heat insulation components 7331 are provided on the outer sides of the first tube 731, the second tube 732, and the connecting tube 733. The heat insulation components 7331 can reduce the efficiency of heat exchange between the coolant inside the first tube 731, the second tube 732, and the connecting tube 733 and the external environment, thereby reducing the rate of coolant temperature rise and improving the cooling effect on the battery cell 310. In addition, the heat insulation components 7331 can also protect the first tube 731, the second tube 732, and the connecting tube 733 to a certain extent, reducing the risk of damage to these components.

[0297] Optionally, the thermal insulation element 7331 is foam. The thermal insulation element 7331 covers the outside of the first tube body 731, the second tube body 732 and the connecting tube 733.

[0298] Referring to Figures 1, 2, 3, 4, 8, 10, and 11, in some embodiments, the first pipe body 731 is provided with a first switching valve 734, which is configured to connect or disconnect the first pipe body 731 and the connecting pipe 733. The second pipe body 732 is provided with a second switching valve 735, which is configured to connect or disconnect the second pipe body 732 and the connecting pipe 733.

[0299] The first switching valve 734 is a valve body structure used to control the connection or disconnection of the first pipe body 731 and the connecting pipe 733. When the first switching valve 734 is open, the first pipe body 731 and the connecting pipe 733 are connected. When the first switching valve 734 is closed, the first pipe body 731 and the connecting pipe 733 are disconnected. The first switching valve 734 can be a gate valve, globe valve, ball valve, butterfly valve, etc.

[0300] The second switching valve 735 is a valve body structure used to control the connection or disconnection of the second pipe body 732 and the connecting pipe 733. When the second switching valve 735 is open, the second pipe body 732 and the connecting pipe 733 are connected. When the second switching valve 735 is closed, the second pipe body 732 and the connecting pipe 733 are disconnected. The second switching valve 735 can be a gate valve, globe valve, ball valve, butterfly valve, etc.

[0301] Since the energy storage system 10 requires commissioning before leaving the factory, the first pipe 731, connecting pipe 733, and second pipe 732 already contain coolant. When it is necessary to disassemble the connecting pipe 733, the first switch valve 734 and the second switch valve 735 can be closed first, thereby disconnecting the first pipe 731 from the connecting pipe 733 and the second pipe 732 from the connecting pipe 733. In this way, the coolant in the first pipe 731 and the second pipe 732 is less likely to leak when disassembling the connecting pipe 733. During assembly, the connecting pipe 733 is first connected to the first pipe 731 and the second pipe 732, and then the first switch valve 734 and the second switch valve 735 are opened, so that the first pipe 731 and the connecting pipe 733 are connected, and the second pipe 732 and the connecting pipe 733 are connected, so as to realize the circulation of coolant.

[0302] Referring to Figures 1, 2, 3, 4, 8, 10, and 11, in some embodiments, the connecting pipe 733 is provided with a vent 736 and a discharge port 737, with the vent 736 positioned higher than the discharge port 737. The vent 736 is provided with a first switch 738 configured to open or close the vent 736. The discharge port 737 is provided with a second switch 739 configured to open or close the discharge port 737.

[0303] Vent 736 is an opening used to balance the air pressure inside and outside the connecting pipe 733. Vent 736 is located in the connecting pipe 733, and understandably, vent 736 is located between the first switching valve 734 and the second switching valve 735.

[0304] The drain port 737 is an opening for draining coolant from the connecting pipe 733. The drain port 737 is located in the connecting pipe 733, and understandably, the drain port 737 is located between the first switching valve 734 and the second switching valve 735.

[0305] The vent 736 is positioned higher than the exhaust port 737, so that outside air can more easily enter the connecting pipe 733, thereby balancing the internal and external air pressure of the connecting pipe 733 more quickly.

[0306] A first switch element 738 is disposed at the vent 736, and is used to open or close the vent 736. When the first switch element 738 is open, the vent is opened, and the connecting pipe 733 is connected to the outside, allowing outside air to enter the connecting pipe 733, thereby balancing the air pressure inside and outside the connecting pipe 733. For example, the first switch element 738 can be a vent cap, and the first switch element 738 is welded to the connecting pipe 733.

[0307] A second switch element 739 is disposed at the drain port 737, and the second switch element 739 is used to open or close the drain port 737. When the first switch element 738 is open, the drain port 737 is open, allowing the coolant in the connecting pipe 733 to be discharged through the drain port 737. Optionally, the second switch element 739 is welded to the connecting pipe 733.

[0308] Before disassembling the connecting pipe 733, there is already coolant inside the connecting pipe 733. In order to disassemble the connecting pipe 733 more easily, the vent 736 can be opened first through the first switch 738 to balance the air pressure inside and outside the connecting pipe 733, and then the drain port 737 can be opened through the second switch 739 to release the coolant inside the connecting pipe 733.

[0309] Please refer to Figures 8, 10, 11, and 12. Figure 12 is a schematic diagram showing the connection of the first pipe 731, connecting pipe 733, second pipe 732, and drain fixture 7371 provided in some embodiments of this application. In some embodiments, the second switch 739 has an open state with the discharge port 737 open and a closed state with the discharge port 737 closed. The energy storage system 10 also includes a drain fixture 7371, which has a discharge channel. The drain fixture 7371 is used to cooperate with the second switch 739 to switch the second switch 739 from a closed state to an open state, thereby connecting the discharge port 737 and the discharge channel.

[0310] The second switch 739 has an open state and a closed state. When the second switch 739 is in the open state, it opens the drain port 737, allowing the coolant in the connecting pipe 733 to drain out through the drain port 737. When the second switch 739 is in the closed state, it closes the drain port 737, preventing the coolant in the connecting pipe 733 from draining out through the drain port 737.

[0311] The drain fixture 7371 is a component used to cooperate with the second switch element 739 to drain the coolant from the connecting pipe 733. Normally, the drain fixture 7371 is separate from the second switch element 739, and the second switch element 739 is in the closed state. When drainage is required, the drain fixture 7371 can be engaged with the second switch element 739, causing the second switch element 739 to be in the open state. For example, the drain fixture 7371 has a male connector, and the second switch element 739 has a female connector; when the male and female connectors are engaged, the second switch element 739 switches from the closed state to the open state.

[0312] The drain fixture 7371 has a drain channel, which is used to communicate with the drain port 737 when the drain fixture 7371 is engaged with the second switch 739.

[0313] Optionally, the energy storage system 10 also includes a drain pipe, which is detachably connected to the drain fixture 7371. When the drain pipe is connected to the drain fixture 7371, the internal space of the drain pipe is connected to the discharge channel, and the coolant in the connecting pipe 733 can flow to the drain pipe through the drain fixture 7371 and finally be discharged through the drain pipe.

[0314] The energy storage system 10 includes a drain fixture 7371, which can cooperate with the second switch 739 to switch the second switch 739 from a closed state to an open state, thereby achieving rapid drainage of the connecting pipe 733. When the drain fixture 7371 is separated from the second switch 739, the second switch 739 switches from an open state to a closed state, which helps to reduce manual operation and improve disassembly and installation efficiency.

[0315] Referring to Figures 7, 8, 10, 11, and 12, in some embodiments, the thermal management module 500 includes an expansion tank 580, a pumping device 530, and a heat exchanger 540. The pumping device 530, heat exchanger 540, thermal management component 320 of the second battery device 400, and expansion tank 580 are connected to form a second coolant circulation loop 420. The second coolant circulation loop 420 includes a second main pipe 730.

[0316] The expansion tank 580 is a component that, when the fluid pressure in the system decreases, causes the gas pressure inside the expansion tank 580 to exceed the fluid pressure, resulting in gas expansion that forces the fluid out of the bladder and replenishes the system. When the fluid pressure in the system increases, the fluid enters the bladder of the expansion tank 580, compressing the nitrogen gas sealed inside. This compression reduces the gas volume and increases its pressure until the gas pressure inside the expansion tank 580 matches the fluid pressure in the system, at which point fluid entry into the bladder ceases. When the fluid pressure in the system decreases, the gas pressure inside the expansion tank 580 exceeds the fluid pressure, causing the gas expansion to force the fluid out of the bladder and replenish the system.

[0317] The pumping device 530, heat exchanger 540, thermal management component 320 of the second battery device 400, expansion tank 580, and pumping device 530 are connected in sequence to form a second coolant circulation loop 420. Of course, the connection order of the pumping device 530, heat exchanger 540, thermal management component 320 of the second battery device 400, expansion tank 580, and pumping device 530 is not limited to this; it can be any other reasonable connection order. For example, the pumping device 530, thermal management component 320 of the second battery device 400, expansion tank 580, heat exchanger 540, and pumping device 530 can be connected in sequence to form the second coolant circulation loop 420.

[0318] The pumping device 530, heat exchanger 540, thermal management component 320 of the second battery device 400, expansion tank 580 and pumping device 530 are connected by pipelines, including a second main pipe 730.

[0319] By incorporating the expansion tank 580, on the one hand, the expansion tank 580 can act as a buffer in the second coolant circulation loop 420. When the coolant expands due to heat, it absorbs some of the coolant; when the coolant contracts due to cold, it replenishes the coolant, thereby improving the stability of the coolant flow. On the other hand, after the connecting pipe 733 is installed, if air is present in the connecting pipe 733, the expansion tank 580 can absorb the air in the connecting pipe 733, allowing the coolant to circulate normally in the second coolant circulation loop 420.

[0320] In some embodiments, at least one of the first tube 731, the second tube 732, and the connecting tube 733 includes a deformable tube.

[0321] Only one of the first pipe body 731, the second pipe body 732, and the connecting pipe 733 may include a deformable pipe; for example, the connecting pipe 733 may include a deformable pipe. Two of the first pipe body 731, the second pipe body 732, and the connecting pipe 733 may include deformable pipes; for example, both the first pipe body 731 and the second pipe body 732 may include deformable pipes. All of the first pipe body 731, the second pipe body 732, and the connecting pipe 733 may also include deformable pipes.

[0322] When the first tube body 731 includes a deformable tube, the end of the first tube body 731 used to connect with the connecting tube 733 may be a deformable tube, while the other part may be a rigid tube. Alternatively, the entire first tube body 731 may be a deformable tube, or the end of the first tube body 731 used to connect with the connecting tube 733 may be a rigid tube, while the other part may include a deformable tube.

[0323] When the second tube body 732 includes a deformable tube, the end of the first tube body 731 used to connect with the connecting tube 733 may be a deformable tube, while the other parts may be rigid tubes. Alternatively, the second tube body 732 may be entirely a deformable tube, or the end of the second tube body 732 used to connect with the connecting tube 733 may be a rigid tube, while the other parts may include deformable tubes.

[0324] When the connecting pipe 733 includes a deformable pipe, the end of the connecting pipe 733 for connecting to the first pipe body 731 and / or the end of the connecting pipe 733 for connecting to the second pipe body 732 may be a deformable pipe, while the other parts may be rigid pipes. Alternatively, the connecting pipe 733 may be a deformable pipe as a whole. Or, the end of the connecting pipe 733 for connecting to the first pipe body 731 and / or the end of the connecting pipe 733 for connecting to the second pipe body 732 may be a rigid pipe, while the other parts may be deformable pipes (for example, the middle part of the connecting pipe 733 may be a deformable pipe, and both ends may be rigid pipes).

[0325] It's important to clarify that "deformable tubing" here refers to tubing that is easily bent or extended (and not easily damaged after bending or extending). For example, deformable tubing can be flexible hoses or extendable tubing. Flexible hoses are typically composed of multiple layers of materials, such as PVC and rubber, and are flexible. Extendable tubing can be corrugated pipes, etc. "Rigid tubing," on the other hand, refers to tubing that is difficult to bend or extend (and easily damaged after bending or extending). Rigid tubing is usually made of a single material. For example, rigid tubing can be aluminum, copper, iron, steel, or other metal pipes. Flexible hoses and extendable tubing are easier to assemble than rigid tubing.

[0326] Optionally, the first tube 731, the second tube 732, and the connecting tube 733 all include deformable tubes. In some embodiments, the deformable tube is a corrugated tube. The end of the first tube 731 for connecting to the connecting tube 733 is a metal tube, and the other part includes a corrugated tube. The end of the second tube 732 for connecting to the connecting tube 733 is a metal tube, and the other part includes a deformable tube. The middle part of the connecting tube 733 is a corrugated tube, and both ends are metal tubes.

[0327] By including at least one of the first tube body 731, the second tube body 732, and the connecting tube 733 as a deformable tube, it is easy to disassemble and install the connecting tube 733.

[0328] Please refer to Figure 13, which is a schematic diagram of the structure of the connecting pipe 733 passing through the first bottom wall 170 and the second top wall 210 according to some embodiments of this application. In some embodiments, the first compartment 100 includes a first bottom wall 170, and the first bottom wall 170 is provided with a second outlet hole 171. The second compartment 200 includes a second top wall 210, and the second top wall 210 is provided with a third outlet hole 211. The second main pipe 730 passes through the second outlet hole 171 and the third outlet hole 211.

[0329] The second outlet hole 171 is a through hole provided in the first bottom wall 170, and the second outlet hole 171 penetrates the first bottom wall 170 along the height direction.

[0330] The third lead-out hole 211 is a through hole provided in the second top wall 210, and the third lead-out hole 211 penetrates the second top wall 210 along the height direction.

[0331] One end of the second main pipe 730 is located inside the first compartment 100 and is connected to the main pipe 710. The other end of the second main pipe 730 passes through the second outlet hole 171 and the third outlet hole 211 in sequence and is connected to the thermal management component 320 of the second battery device 400.

[0332] Optionally, the second lead-out hole 171 and the third lead-out hole 211 are coaxially arranged to reduce assembly difficulty.

[0333] By providing a second outlet hole 171 on the first bottom wall 170 and a third outlet hole 211 on the second top wall 210, the second main pipe 730 can pass through the first bottom wall 170 and the second top wall 210 from the first compartment 100 and enter the second compartment 200. This helps to reduce the length of the second main pipe 730 exposed to the outside, reduces the risk of damage to the second main pipe 730, and improves the reliability of the energy storage system 10.

[0334] In some embodiments, the connecting tube 733 passes through the second outlet hole 171 and the third outlet hole 211.

[0335] One end of the connecting pipe 733 is located inside the first compartment 100 and is connected to the first pipe body 731. The other end of the connecting pipe 733 passes through the second outlet hole 171 and the third outlet hole 211 in sequence and is connected to the second pipe body 732.

[0336] The connecting pipe 733 passes through the second outlet hole 171 and the third outlet hole 211, so that the first pipe body 731 can be completely contained within the first compartment 100 and the second pipe body 732 can be completely contained within the second compartment 200. Neither the first pipe body 731 nor the second pipe body 732 is exposed, thereby reducing the risk of damage to the first pipe body 731 and the second pipe body 732 during transportation.

[0337] Referring to Figure 13, in some embodiments, the energy storage system 10 includes a communication component 180, which is connected to a first bottom wall 170 and a second top wall 210, and a second main pipe 730 passes through the communication component 180.

[0338] The connecting component 180 is used to connect the first bottom wall 170 and the second top wall 210. The connecting component 180 has a receiving space in which a portion of the second main pipe 730 is received. In other words, the connecting component 180 surrounds the outside of the portion of the second main pipe 730 located between the first bottom wall 170 and the second top wall 210.

[0339] By setting up the connecting component 180 and having the second main pipe 730 pass through the connecting component 180, the connecting component 180 can protect the second main pipe 730 and reduce the risk of damage to the second main pipe 730.

[0340] Optionally, the connecting pipe 733 passes through the connecting component 180.

[0341] The connecting component 180 has a receiving space in which a portion of the connector is received. In other words, the connecting component 180 surrounds the outer side of the portion of the connecting pipe 733 located between the first bottom wall 170 and the second top wall 210.

[0342] By setting up a connecting component 180 and having the connecting pipe 733 pass through the connecting component 180, the connecting component 180 can protect the connecting pipe 733 and reduce the risk of damage to the connecting pipe 733.

[0343] Referring to Figure 13, in some embodiments, the connecting component 180 includes a first connector 181, a second connector 182, and a second seal 183. The first connector 181 is connected to the first bottom wall 170 and is disposed around the second main pipe 730. The second top wall 210 is provided with the second connector 182, which is sealed to the second top wall 210 and is disposed around the second main pipe 730. The energy storage system 10 also includes the second seal 183, which seals the first connector 181 and the second connector 182.

[0344] The first connector 181 is a cylindrical structure connected to the first bottom wall 170, and the second main pipe 730 is at least partially inserted into the first connector 181.

[0345] Optionally, the first connector 181 is bolted to the first bottom wall 170.

[0346] The second connector 182 is a cylindrical structure connected to the second top wall 210, and the second main pipe 730 is at least partially inserted into the second connector 182. The second connector 182 is sealed to the second top wall 210. This sealing connection can be achieved by providing a sealing element between the second connector 182 and the second top wall 210, or by welding the second connector 182 to the second top wall 210.

[0347] The second seal 183 is used to seal the gap between the first connector 181 and the second connector 182. The second seal 183 is a structure capable of achieving a sealing effect, such as sealant, gasket, or sealing sheet.

[0348] By providing a first connector 181 and a second connector 182, a protective space is defined, within which the second main pipe 730 is inserted, providing better protection and reducing the risk of damage to the second main pipe 730. By sealing the second connector 182 to the second top wall 210, the risk of rainwater or other liquids entering the second compartment 200 through the gap between the second connector 182 and the second top wall 210 is reduced. A second sealing member 183 seals the first connector 181 and the second connector 182, further reducing the risk of rainwater or other liquids entering the second compartment 200 through the gap between the first connector 181 and the second connector 182.

[0349] Optionally, both the first connector 181 and the second connector are arranged around the connecting tube 733.

[0350] Referring to Figure 13, in some embodiments, the second connector 182 protrudes from the upper surface of the second top wall 210 along the direction from the second compartment 200 to the first compartment 100.

[0351] "In the direction from the second compartment 200 to the first compartment 100, the second connector 182 protrudes from the upper surface of the second top wall 210." That is, the second connector 182 protrudes from the upper surface of the second top wall 210 in the direction from the second compartment 200 to the first compartment 100, and the upper surface of the second connector 182 is higher than the upper surface of the second top wall 210.

[0352] By making the second connector 182 protrude from the upper surface of the second top wall 210 in the direction from the second compartment 200 to the first compartment 100, it is beneficial to reduce the risk of rainwater and other liquids entering the second compartment 200 through the second connector 182.

[0353] Referring to Figure 13, in some embodiments, the first connector 181 and the second connector 182 are plugged into each other. The first connector 181 has a first sealing portion 1811, and the second connector 182 has a second sealing portion 1821. Along the height direction, the first sealing portion 1811 and the second sealing portion 1821 are disposed opposite to each other, and the second sealing portion 1821 is located on the side of the first sealing portion 1811 that faces away from the isolation layer 140. The second sealing member 183 is disposed between the first sealing portion 1811 and the second sealing portion 1821.

[0354] The "first connector 181 and second connector 182 plugging and engaging" can mean that at least a portion of the first connector 181 is arranged around the outside of the second connector 182, or at least a portion of the second connector 182 is arranged around the outside of the first connector 181.

[0355] Referring to Figure 13, in the embodiment shown, a portion of the first connector 181 is disposed around the outer side of the second connector 182. The first sealing portion 1811 is an annular protrusion protruding from the inner circumferential surface of the first connector 181, and the second sealing portion 1821 is an annular protrusion protruding from the inner circumferential surface of the second connector 182. The first sealing portion 1811 and the second sealing portion 1821 are at least partially opposite each other along the height direction, with the first sealing portion 1811 located at the top of the second sealing portion 1821. In the figure, the first sealing portion 1811 is disposed between the two ends of the first connector 181, and the second sealing portion 1821 is disposed at the end of the second connector 182 near the first bottom wall 170.

[0356] The second sealing element 183 is clamped between the first sealing part 1811 and the second sealing part 1821 to achieve sealing of the first sealing part 1811 and the second sealing part 1821.

[0357] By providing a first sealing part 1811 and a second sealing part 1821, the first sealing part 1811 and the second sealing part 1821 can cooperate to clamp the second sealing member 183, thereby achieving a seal on the first connecting member 181 and the second connecting member 182. In this way, during assembly, it is only necessary to insert the first connecting member 181 and the second connecting member 182 into place to achieve a seal, which simplifies the assembly process.

[0358] Please refer to Figures 1, 2, and 14. Figure 14 is a side view of the piping connecting the thermal management module 500 to the first battery device 300 and the piping connecting the thermal management module 500 to the second battery device 400, according to some embodiments of this application. In some embodiments, both the first battery device 300 and the second battery device 400 include a thermal management component 320. The thermal management module 500 also includes a pumping device 530 and a heat exchanger 540. The pumping device 530, the heat exchanger 540, and the thermal management component 320 of the first battery device 300 are connected to form a first coolant circulation loop 410. The pumping device 530, the heat exchanger 540, and the thermal management component 320 of the second battery device 400 are connected to form a second coolant circulation loop 420. The isolation layer 140 is provided with a fourth outlet hole. The energy storage system 10 also includes a replenishment pipe 740. One end of the replenishment pipe 740 is connected to the thermal management module 500, and the other end of the replenishment pipe 740 passes through the fourth outlet hole and extends to the side of the isolation layer 140 away from the thermal management module 500. The replenishment pipe 740 is used to replenish coolant to the first coolant circulation loop 410 and the second coolant circulation loop 420.

[0359] The fourth lead-out hole is a through hole provided in the isolation layer 140, and the fourth lead-out hole penetrates the isolation layer 140 along the height direction.

[0360] The coolant supply pipe 740 passes through the fourth outlet hole. Specifically, one end of the coolant supply pipe 740 is connected to the thermal management module 500 and communicates with the first coolant circulation loop 410 and the second coolant circulation loop 420. The other end of the coolant supply pipe 740 passes through the fourth outlet hole and extends to the bottom of the isolation layer 140. In this way, coolant can be supplied to the first coolant circulation loop 410 and the second coolant circulation loop 420 through the end of the coolant supply pipe 740 located at the bottom of the isolation layer 140.

[0361] In order to facilitate the replenishment of coolant from the replenishment pipe 740 to the first coolant circulation loop 410, the connection point between the replenishment pipe 740 and the first coolant circulation loop 410 is located on the outlet channel, that is, the connection point between the replenishment pipe 740 and the first coolant circulation loop 410 is located in front of the pumping device 530.

[0362] To facilitate the replenishment of coolant from the replenishment pipe 740 to the second coolant circulation loop 420, the connection point between the replenishment pipe 740 and the second coolant circulation loop 420 is located on the outlet channel, that is, the connection point between the replenishment pipe 740 and the second coolant circulation loop 420 is located in front of the pumping device 530.

[0363] Optionally, the connection point between the replenishment pipe 740 and the first coolant circulation loop 410 is located between the expansion tank 580 and the pumping device 530. The connection point between the replenishment pipe 740 and the second coolant circulation loop 420 is also located between the expansion tank 580 and the pumping device 530. The pipeline between the expansion tank 580 and the pumping device 530 is a shared section between the first coolant circulation loop 410 and the second coolant circulation loop 420, therefore, replenishment can be performed on both the first coolant circulation loop 410 and the second coolant circulation loop 420 through a single replenishment pipe 740.

[0364] It should be noted that the connection between the replenishment pipe 740 and the first coolant circulation loop 410 can be either a direct connection or an indirect connection via other intermediate pipes. Similarly, the connection between the replenishment pipe 740 and the second coolant circulation loop 420 can be either a direct connection or an indirect connection via other intermediate pipes.

[0365] By setting up a replenishment pipe 740, one end of which is connected to the thermal management module 500 and the other end of which extends to the side of the isolation layer 140 away from the thermal management module 500, replenishment operations can be performed on the first coolant circulation loop 410 and the second coolant circulation loop 420 through the replenishment pipe 740 on the side of the isolation layer 140 away from the thermal management module 500. This reduces the height of the replenishment operation and lowers the risk of danger during the replenishment operation.

[0366] Referring to Figures 1, 2, and 14, in some embodiments, the isolation layer 140 is provided with a fifth outlet hole. The energy storage system 10 also includes a maintenance box 810, which is connected to the thermal management module 500 via a wire 820 passing through the fifth outlet hole. The maintenance box 810 is disposed within the first compartment 100 and located on the side of the isolation layer 140 opposite to the thermal management module 500.

[0367] The fifth lead-out hole is a through hole provided in the isolation layer 140, and the fifth lead-out hole penetrates the isolation layer 140 along the height direction.

[0368] The repair box 810 contains the fuse for the thermal management module 500, the power cord for the thermal management module 500, the communication harness adapter for the thermal management module 500, and the debugging interface for the thermal management module 500.

[0369] The repair box 810 is housed within the first compartment 100 and is located below the isolation layer 140.

[0370] The repair box 810 is electrically connected to the thermal management module 500 via a wire 820. One end of the wire 820 is connected to the thermal management module 500, and the other end of the wire 820 passes through the fifth lead-out hole and is connected to the repair box 810.

[0371] By placing the maintenance box 810 inside the first compartment 100 and on the side of the isolation layer 140 away from the thermal management module 500, it is beneficial to reduce the height of the maintenance box 810, thereby reducing the height required for maintenance and debugging and lowering the risk of danger during maintenance and debugging.

[0372] In other embodiments, both the first battery device 300 and the second battery device 400 include a thermal management component 320. The insulating layer 140 is provided with a sixth lead-out and a seventh lead-out. The energy storage system 10 includes a first main pipe 720 and a second main pipe 730. One end of the first main pipe 720 is connected to the thermal management module 500, and the other end of the first main pipe 720 passes through the sixth lead-out and is connected to the thermal management component 320 of the first battery device 300. One end of the second main pipe 730 is connected to the thermal management module 500, and the other end of the second main pipe 730 passes through the seventh lead-out and is connected to the thermal management component 320 of the second battery device 400.

[0373] One end of the first main pipe 720 is directly connected to the thermal management module 500, and one end of the second main pipe 730 is also directly connected to the thermal management module 500, thus omitting the main pipe 710. The coolant output from the thermal management module 500 can be delivered through the first main pipe 720 and the second main pipe 730 to the thermal management components 320 of the first battery device 300 and the second battery device 400, respectively.

[0374] One end of the first main pipe 720 is connected to the thermal management module 500, and the other end of the first main pipe 720 passes through the sixth lead-out hole and is connected to the thermal management component 320 of the first battery device 300. One end of the second main pipe 730 is connected to the thermal management module 500, and the other end of the second main pipe 730 passes through the seventh lead-out hole and is connected to the thermal management component 320 of the second battery device 400. Coolant can flow from the first main pipe 720 and the second main pipe 730 to the thermal management component 320 of the first battery device 300 and the thermal management component 320 of the second battery device 400, respectively, which is beneficial to improving the flow uniformity of the thermal management component 320 of the first battery device 300 and the thermal management component 320 of the second battery device 400.

[0375] Please refer to Figures 1 and 2. The dimensions of the first compartment 100 and the second compartment 200 along the height direction are both smaller than the dimensions of a standard container along the height direction.

[0376] The dimension of the first compartment 100 along the height direction is also the height of the first compartment 100. Please refer to Figures 1 and 2. In the figures, H2 is used to indicate the dimension of the first compartment 100 along the height direction.

[0377] The dimension of the second compartment 200 along the height direction is also the height of the second compartment 200. Please refer to Figures 1 and 2. In the figures, H3 is used to indicate the dimension of the second compartment 200 along the height direction.

[0378] A standard container can refer to a container of standard dimensions used in transportation, such as 10 feet, 20 feet, 30 feet, 40 feet, or 45 feet. These dimensions conform to the corresponding standards, with specific length, width, and height measurements. Standard containers can be referenced in GB / T1413-2023 Series 1: Container Classification, Dimensions, and Rated Mass.

[0379] A 10-foot dimension can include: a length dimension of 2991mm with a tolerance of 0mm-5mm; a width dimension of 2438mm with a tolerance of 0mm-5mm; and a height dimension of 2438mm or less with a tolerance of 0mm-5mm.

[0380] A 20-foot measurement may include: a length of 6058mm with a tolerance of 0mm-6mm; a width of 2438mm with a tolerance of 0mm-5mm; and a height of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm.

[0381] A 30-foot measurement may include: a length dimension of 9125mm with a tolerance of 0mm-10mm; a width dimension of 2438mm with a tolerance of 0mm-5mm; and a height dimension of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm.

[0382] A 40-foot dimension may include: a length dimension of 12192mm with a tolerance of 0mm-10mm; a width dimension of 2438mm with a tolerance of 0mm-5mm; and a height dimension of 2896mm, 2591mm, or no greater than 2438mm with a tolerance of 0mm-5mm.

[0383] A 45-foot unit can include: a length dimension of 13716mm with a tolerance of 0mm-10mm; a width dimension of 2438mm with a tolerance of 350mm-5mm; and a height dimension of 2591mm or 2896mm with a tolerance of 0mm-5mm.

[0384] In the embodiments of this application, for the first compartment 100 and the second compartment 200 of various sizes, the dimensions within the range of ±1%, ±2%, ±3%, ±4%, and ±5% can be regarded as the dimensions within the tolerance range.

[0385] In some embodiments, the standard container is a 20-foot standard container with a height of 2896 mm, 2591 mm, or 2438 mm. The first compartment 100 has a height dimension of less than 2896 mm, and the second compartment 200 has a height dimension of less than 2896 mm.

[0386] When the dimensions of the first compartment 100 and the second compartment 200 along the height direction are both smaller than the dimensions of a standard container along the height direction, the total weight of the first compartment 100 and the components inside the first compartment 100 and the total weight of the second compartment 200 and the components inside the second compartment 200 can be reduced, which helps to improve the problem of overweight transportation and reduces the transportation cost of the energy storage system 10.

[0387] In some embodiments, the dimensions of the first compartment 100 and the second compartment 200 along the height direction are both greater than or equal to one-third times the dimensions of a standard container along the height direction.

[0388] When the dimensions of the first compartment 100 and the second compartment 200 along the height direction are both greater than or equal to one-third times the dimensions of a standard container along the height direction, the energy storage system 10 has high manufacturability and is more convenient to transport and install.

[0389] Optionally, the dimensions of the first compartment 100 and the second compartment 200 along the height direction are both greater than or equal to half the dimensions of a standard container along the height direction.

[0390] When the dimensions of the first compartment 100 and the second compartment 200 along the height direction are both greater than or equal to half the dimensions of a standard shipping container along the height direction, the energy storage system 10 exhibits higher manufacturability, higher volumetric energy density, and easier transportation and installation. For example, when the first compartment 100 and the second compartment 200 are stacked, the height is greater than that of a standard shipping container. The total weight of the first compartment 100 and the components housed within it is relatively low, as is the total weight of the second compartment 200 and the components housed within it. This configuration allows the first compartment 100 and the second compartment 200 to be transported separately, and when stacked at the point of use, the energy storage system 10 has a higher energy capacity.

[0391] In some embodiments, the sum of the dimensions of the first compartment 100 and the second compartment 200 along the height direction is greater than or equal to the dimension of a standard container along the height direction.

[0392] For example, the standard container is a 20-foot standard container with a height of 2896 mm. The sum of the dimension of the first compartment 100 along the height direction and the dimension of the second compartment 200 along the height direction Z is greater than or equal to 2896 mm.

[0393] By making the sum of the dimensions of the first compartment 100 and the second compartment 200 along the height direction greater than or equal to the dimensions of a standard container along the height direction, it is beneficial to increase the power capacity of the energy storage system 10.

[0394] Optionally, the dimensions of the first compartment 100 and the second compartment 200 along the height direction are both greater than or equal to 805 mm and both less than 2896 mm.

[0395] Please refer to Figures 1 and 2. In the figures, H2 indicates the dimension of the first compartment 100 along the height direction, that is, 805mm≤H2≤2896mm.

[0396] The height dimension of the first compartment 100 can be any one of 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2100mm, 2200mm, 2300mm, 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, or 2895mm, or a value between any two of them.

[0397] Please refer to Figures 1 and 2. In the figures, H3 indicates the dimension of the second compartment 200 along the height direction, that is, 805mm≤H3≤2896mm.

[0398] The height dimension of the second compartment 200 can be any one of 850mm, 900mm, 950mm, 1000mm, 1050mm, 1100mm, 1150mm, 1200mm, 1300mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2100mm, 2200mm, 2300mm, 2400mm, 2500mm, 2600mm, 2700mm, 2800mm, or 2895mm, or a value between any two of them.

[0399] By setting the dimensions of the first compartment 100 along the height direction and the second compartment 200 along the height direction to be greater than or equal to 805 mm and less than 2896 mm, it is beneficial to reduce the total weight of the first compartment 100 and the components inside the first compartment 100, reduce the total weight of the second compartment 200 and the components inside the second compartment 200, and maximize the power of the energy storage system 10, thereby reducing the operating cost of the energy storage system 10.

[0400] Referring to Figures 1 and 2, in some embodiments, the heat dissipation module 510 is housed inside the first compartment 100, and the dimension of the first compartment 100 along the height direction is larger than the dimension of the second compartment 200 along the height direction.

[0401] In the embodiment where the heat dissipation module 510 is housed within the first compartment 100, the height of the first compartment 100 is greater than the height of the second compartment 200, i.e., H2 > H3.

[0402] By housing the heat dissipation module 510 inside the first compartment 100, and ensuring that the height dimension of the first compartment 100 is greater than that of the second compartment 200, the internal space of the first compartment 100 is increased. This reduces the impact of the heat dissipation module 510 on the volume of the first battery device 300, ensuring that the first compartment 100 has sufficient space to accommodate both the first battery device 300 and the heat dissipation module 510. Furthermore, a heat dissipation module 510 with higher heat dissipation capacity can be placed there, improving thermal management capabilities.

[0403] In some embodiments, the dimensions of the first compartment 100 and the second compartment 200 along their length direction are consistent with the dimensions of a standard container along their length direction, and the dimensions of the first compartment 100 and the second compartment 200 along their width direction are consistent with the dimensions of a standard container along their width direction.

[0404] By making the dimensions of the first compartment 100 and the second compartment 200 in their length direction consistent with the dimensions in the length direction of a standard container, and the dimensions of the first compartment 100 and the second compartment 200 in their width direction consistent with the dimensions in the width direction of a standard container, it is beneficial to match the existing standard container transportation vehicles and lifting gear, thereby reducing the transportation cost of the energy storage system 10 and thus reducing the operating cost of the energy storage system 10.

[0405] In some embodiments, the total weight of the first compartment 100 and the components disposed within the first compartment 100 is less than or equal to 36 tons; and / or the total weight of the second compartment 200 and the components disposed within the second compartment 200 is less than or equal to 36 tons.

[0406] Components installed within the first compartment 100 include, for example, the first battery device 300, connecting pipelines, maintenance box 810, thermal management module 500, etc.

[0407] The total weight of the first compartment 100 and the components disposed within the first compartment 100 can be any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, or 36 tons, or any combination thereof.

[0408] Components installed within the second compartment 200, such as the second battery device 400, connecting pipelines, etc.

[0409] The total weight of the second compartment 200 and the components disposed within the second compartment 200 can be any one of 10 tons, 15 tons, 20 tons, 25 tons, 30 tons, 35 tons, or 36 tons, or any combination thereof.

[0410] By ensuring that the total weight of the first compartment 100 and the components located within the first compartment 100 is less than or equal to 36 tons, and the total weight of the second compartment 200 and the components located within the second compartment 200 is less than or equal to 36 tons, the transportation limits of some countries are met, thereby reducing transportation difficulty and costs.

[0411] Please refer to Figure 15, which is a schematic diagram of the control system in the energy storage system 10 provided in some embodiments of this application. In some embodiments, the energy storage system 10 further includes a control module 910, a first battery monitoring circuit, and a second battery monitoring circuit. The first battery monitoring circuit is used to collect first data from the first battery device 300, and the second battery monitoring circuit is used to collect second data from the second battery device 400. The control module 910 is used to determine the operating status data of the energy storage system 10, and the operating status data of the energy storage system 10 is associated with the first data and the second data.

[0412] The first battery monitoring circuit can be a device used to monitor the individual battery cells 310 in the first battery device 300. The first data acquisition of the first battery device 300 by the first battery monitoring circuit can refer to the first battery monitoring circuit's ability to acquire voltage and temperature data of the individual battery cells 310 in the first battery device 300. These data are the basis for the battery management system to perform state monitoring and control.

[0413] The second battery monitoring circuit can be a device used to monitor the individual battery cells 310 in the second battery device 400. The first data acquisition of the second battery device 400 by the second battery monitoring circuit can refer to the ability of the second battery monitoring circuit to acquire voltage and temperature data of the individual battery cells 310 in the second battery device 400. These data are the basis for the battery management system to perform state monitoring and control.

[0414] The control module 910 can be a module in the energy storage system 10 used to monitor and manage the first battery device 300 and the second battery device 400. It can serve as a management unit for the first battery device 300 and the second battery device 400 in the energy storage system 10. The control module 910 can communicate with the first battery monitoring circuit and the second battery monitoring circuit. It can receive and process first data and second data to determine the operating status data of the energy storage system 10. The control module 910 can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage system 10 to determine the operating status data of the energy storage system 10. As an example, the control module 910 includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0415] The operating status data of the energy storage system 10 determined by the control module 910 is associated with the first data of the first battery device 300 collected by the first battery monitoring circuit and the second data of the second battery device 400 collected by the second battery monitoring circuit. This enables the control module 910 to control the first battery device 300 and the second battery device 400, which helps to reduce the number of control modules 910, maximize the utilization of the control modules 910, and help reduce the cost of the energy storage system 10.

[0416] Referring to Figure 15, in some embodiments, the energy storage system 10 further includes a first sub-control module 920 and a second sub-control module 930. The first sub-control module 920 is communicatively connected between the first battery monitoring circuit and the control module 910. The second sub-control module 930 is communicatively connected between the second battery monitoring circuit and the control module 910.

[0417] The first sub-control module 920 can serve as a battery management unit for a battery cluster formed by multiple first battery devices 300, used for monitoring and managing the battery cluster. The first sub-control module 920 can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, it can control the charging and discharging current and voltage of the battery cluster. The first sub-control module 920 may include modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0418] The second sub-control module 930 can serve as a battery management unit for a battery cluster formed by multiple second battery devices 400, used for monitoring and managing the battery cluster. The second sub-control module 930 can monitor information such as the current, voltage, power, or temperature of the battery cluster. For example, it can control the charging and discharging current and voltage of the battery cluster. The second sub-control module 930 may include modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0419] In some embodiments, the first sub-control module 920 is used to forward first data. For example, the first sub-control module 920 can forward information such as the current, voltage, power, state of charge, or temperature of the first battery device 300 to the control module 910. The second sub-control module 930 is used to forward second data. For example, the second sub-control module 930 can forward information such as the current, voltage, power, state of charge, or temperature of the second battery device 400 to the control module 910.

[0420] In other embodiments, the first sub-control module 920 is used to acquire and process first data, and then transmit the processed data to the control module 910. For example, the first sub-control module 920 can process information such as the current, voltage, power, state of charge, or temperature of the first battery device 300 before forwarding it to the control module 910. The second sub-control module 930 is used to acquire and process second data, and then transmit the processed data to the control module 910. For example, the second sub-control module 930 can process information such as the current, voltage, power, state of charge, or temperature of the second battery device 400 before forwarding it to the control module 910.

[0421] By setting a first sub-control module 920 between the first battery monitoring circuit and the control module 910, and setting a second sub-control module 930 between the second battery monitoring circuit and the control module 910, the control system of the energy storage system 10 is made into a three-level framework. This reduces the length and complexity of the communication harness, reduces sampling errors, improves the reliability of the system, and also reduces the requirements for the processor and communication bus, thus reducing the overall cost of the system.

[0422] Please refer to Figure 16, which is a schematic diagram of the control system framework in the energy storage system 10 provided in some other embodiments of this application. In still some embodiments, the first battery monitoring circuit and the control module 910 are directly communicatively connected, and the second battery monitoring circuit and the control module 910 are also directly communicatively connected.

[0423] By directly communicating with the first battery monitoring circuit and the control module 910, and by directly communicating with the second battery monitoring circuit and the control module 910, the energy storage system 10 is configured as a two-level framework. This allows the control module 910 to monitor key parameters such as voltage, current, and temperature of the battery cells 310 in the first battery device 300 and the second battery device 400 in real time. This helps ensure that the battery cells 310 in the first battery device 300 and the second battery device 400 operate in a safe state, reducing the possibility of overcharging, over-discharging, and short circuits, and thus improving the reliability of the energy storage system 10.

[0424] In some embodiments, the control module 910 is housed in the first compartment 100 or the second compartment 200.

[0425] There is only one control module 910. The control module 910 can be housed in the first compartment 100 or the second compartment 200. The first compartment 100 or the second compartment 200 can protect the control module 910 and reduce the risk of damage to the control module 910.

[0426] In some embodiments, the control module 910 is housed within the first compartment 100. The control module 910 being housed within the first compartment 100 can mean that the control module 910 is located within the hollow structure formed by the first compartment 100. This allows control of the battery devices in different compartments to be achieved solely through the control module 910 within the first compartment 100. In case of emergencies, only the operation of the control module 910 within the first compartment 100 is required to handle any unforeseen circumstances in the energy storage system 10. The control module 910 located within the hollow structure of the first compartment 100 can be connected to the wall of the first compartment 100 using bolts, rivets, connecting pins, or other connecting components. Alternatively, it can be first fixed to a shelf, and then the shelf is connected to the wall of the first compartment 100 using bolts, rivets, connecting pins, or other connecting components. This reduces the possibility of the control module 910 moving due to shaking within the hollow structure of the first compartment 100, thus minimizing the possibility of damage to the control module 910.

[0427] In some embodiments, the control module 910 is housed within the second compartment 200. This means the control module 910 is located within the hollow structure of the second compartment 200, allowing control of the battery devices in different compartments to be achieved solely through the control module 910 within the second compartment 200. This enables the handling of emergencies in the energy storage system 10 by operating only the control module 910 within the second compartment 200. The control module 910, located within the hollow structure of the second compartment 200, can be connected to the wall of the second compartment 200 using bolts, rivets, connecting pins, or other connecting components. Alternatively, it can be first fixed to a shelf, and then the shelf is connected to the wall of the second compartment 200 using bolts, rivets, connecting pins, or other connecting components. This reduces the possibility of the control module 910 moving due to shaking within the hollow structure of the second compartment 200, thus minimizing the possibility of damage to the control module 910.

[0428] By housing the control module 910 within the second compartment 200, the height of the control module 910 is reduced, making it easier for staff to operate the control module 910 and to handle emergencies promptly.

[0429] Please refer to Figure 17, which is a schematic block diagram of a disassembly method for an energy storage system 10 provided in some embodiments of this application. This application also provides a disassembly method 20 for an energy storage system, used to disassemble the aforementioned energy storage system 10. The energy storage system 10 includes a second main pipe 730, which includes a first pipe body 731 and a second pipe body 732. The first pipe body 731 is at least partially disposed within a first compartment 100 and is connected to a thermal management module 500. The second pipe body 732 is at least partially disposed within a second compartment 200 and is connected to a thermal management component 320 of a second battery device 400. The first pipe body 731 and the second pipe body 732 are detachably connected. The disassembly method 20 for the energy storage system includes:

[0430] Disconnection step S100: Separate the first tube 731 and the second tube 732;

[0431] Separation step S200: Separate the first compartment 100 and the second compartment 200.

[0432] "Separating the first tube 731 and the second tube 732" means disconnecting the connection between the first tube 731 and the second tube 732.

[0433] "Separating the first compartment 100 and the second compartment 200" means disconnecting the first compartment 100 and the second compartment 200 so as to remove the first compartment 100, which is stacked on top of the second compartment 200, from the second compartment 200.

[0434] It should be noted that the disconnection step S100 can be performed before the separation step S200, or the disconnection step S100 can be performed simultaneously with the separation step S200.

[0435] Please refer to Figure 18, which is a schematic block diagram of a disassembly method for an energy storage system 10 provided in other embodiments of this application. In other embodiments, the second main pipe 730 further includes a connecting pipe 733, and the first pipe body 731 and the second pipe body 732 are detachably connected through the connecting pipe 733.

[0436] Disconnection step S100 includes:

[0437] Step S110: Separate the connecting tube 733 from the first tube body 731, and separate the connecting tube 733 from the second tube body 732.

[0438] In the disconnection step S100, one end of the connecting tube 733 is disconnected from the first tube body 731 to separate the connecting tube 733 from the first tube body 731, and the other end of the connecting tube 733 is disconnected from the second tube body 732 to separate the connecting tube 733 from the second tube body 732.

[0439] By setting a connecting pipe 733, one end of the connecting pipe 733 is detachably connected to the first pipe body 731, and the other end of the connecting pipe 733 is detachably connected to the second pipe body 732, which helps to reduce the difficulty of separating the first pipe body 731 and the second pipe body 732.

[0440] Please refer to Figure 19, which is a schematic block diagram of a disassembly method for an energy storage system 10 provided in some embodiments of this application. In some embodiments, a first switching valve 734 is provided on the first pipe body 731, and a second switching valve 735 is provided on the second pipe body 732. Before disconnection step S100, the disassembly method 20 for the energy storage system further includes:

[0441] Closing step S300: Close the first switching valve 734 and the second switching valve 735.

[0442] When implementing the dismantling method 20 of the energy storage system, the shutdown step S300 is performed first, followed by the disconnection step S100 and the separation step S200.

[0443] In the closing step S300, the first switch valve 734 is closed to disconnect the connecting pipe 733 and the first pipe body 731, and the second switch valve 735 is closed to disconnect the connecting pipe 733 and the second pipe body 732.

[0444] Since the energy storage system 10 requires commissioning before leaving the factory, the first pipe 731, connecting pipe 733, and second pipe 732 already contain coolant. When it is necessary to disassemble the connecting pipe 733, the first switch valve 734 and the second switch valve 735 can be closed first, thereby disconnecting the first pipe 731 from the connecting pipe 733 and the second pipe 732 from the connecting pipe 733. In this way, the coolant in the first pipe 731 and the second pipe 732 is less likely to leak when disassembling the connecting pipe 733. During assembly, the connecting pipe 733 is first connected to the first pipe 731 and the second pipe 732, and then the first switch valve 734 and the second switch valve 735 are opened, so that the first pipe 731 and the connecting pipe 733 are connected, and the second pipe 732 and the connecting pipe 733 are connected, so as to realize the circulation of coolant.

[0445] Please refer to Figure 20, which is a schematic block diagram of a disassembly method for an energy storage system 10 provided in some embodiments of this application. In some embodiments, after closing step S300 and before disconnecting step S100, the disassembly method 20 for the energy storage system further includes:

[0446] Drainage step S400: Drain the coolant in the connecting pipe 733.

[0447] When implementing the disassembly method 20 of the energy storage system, the following steps are performed: first, the shut-off step S300 is performed; then, the draining step S400 is performed; and finally, the disconnection step S100 and the separation step S200 are performed.

[0448] Before disassembling the connecting pipe 733, there is already coolant inside the connecting pipe 733. By first draining the coolant from the connecting pipe 733 and then disassembling the connecting pipe 733, the difficulty of disassembling the connecting pipe 733 can be reduced.

[0449] Please refer to Figure 21, which is a schematic block diagram of a disassembly method for an energy storage system 10 provided in some embodiments of this application. In some embodiments, the connecting pipe 733 is provided with a vent 736 and a discharge port 737, with the vent 736 positioned higher than the discharge port 737. The vent 736 is provided with a first switch 738, and the discharge port 737 is provided with a second switch 739. The draining step S400 includes:

[0450] Step S410: Open the vent 736 through the first switch 738 and open the drain 737 through the second switch 739 to discharge the coolant in the connecting pipe 733 from the drain 737.

[0451] In step S410, the vent 736 is opened by the first switch 738 to balance the air pressure inside and outside the connecting pipe 733. After the air pressure inside and outside the connecting pipe 733 is balanced, the drain port 737 is opened by the second switch 739 to allow the coolant inside the connecting pipe 733 to be discharged from the drain port 737.

[0452] The vent 736 is opened by the first switch 738 to balance the air pressure inside and outside the connecting pipe 733. Then the drain port 737 is opened by the second switch 739 to release the coolant in the connecting pipe 733. This allows for a simple and convenient way to drain the coolant from the connecting pipe 733.

[0453] Please refer to Figure 22, which is a schematic block diagram of the installation method of the energy storage system 10 provided in some embodiments of this application. This application also provides an installation method 30 for an energy storage system, which is used to install the aforementioned energy storage system 10. A thermal management module 500 is connected to a first tube 731, which is at least partially disposed within a first compartment 100. A second battery device 400 is connected to a second tube 732, which is at least partially disposed within a second compartment 200. The installation method 30 for the energy storage system includes:

[0454] Stacking step S10: Stack the first compartment 100 on top of the second compartment 200;

[0455] Connection step S20: Connect the first tube 731 and the second tube 732.

[0456] In the stacking step S10, the first compartment 100 is stacked on top of the second compartment 200. The first compartment 100 can be connected to the second compartment 200 through connectors to fix the first compartment 100. When connecting the first compartment 100 to the second compartment 200, a detachable connection method can be used to facilitate the subsequent movement of the energy storage system 10.

[0457] In connection step S20, the first tube 731 and the second tube 732 are connected to each other, so that the first tube 731 and the second tube 732 are connected. When connecting the first tube 731 and the second tube 732, a detachable connection can be used, which facilitates the subsequent movement of the energy storage system 10.

[0458] Please refer to Figure 23, which is a schematic block diagram of an installation method for an energy storage system 10 provided in other embodiments of this application. In other embodiments, the energy storage system 10 further includes a connecting pipe 733, and the connection step S20 includes:

[0459] Step S21: Connect the first tube body 731 and the second tube body 732 through the connecting tube 733.

[0460] In step S21, one end of the connecting pipe 733 is connected to the first pipe body 731, and the other end of the connecting pipe 733 is connected to the second pipe body 732. A detachable connection can be used when connecting the connecting pipe 733 and the first pipe body 731, facilitating the subsequent movement of the energy storage system 10. Similarly, a detachable connection can be used when connecting the connecting pipe 733 and the second pipe body 732, also facilitating the subsequent movement of the energy storage system 10.

[0461] By setting a connecting pipe 733, one end of the connecting pipe 733 is used to detachably connect to the first pipe body 731, and the other end of the connecting pipe 733 is used to detachably connect to the second pipe body 732, thereby reducing the difficulty of installing the first pipe body 731 and the second pipe body 732.

[0462] Please refer to Figure 24, which is a schematic block diagram of an installation method for an energy storage system 10 provided in some embodiments of this application. In some embodiments, a first switching valve 734 is provided on the first pipe body 731, and a second switching valve 735 is provided on the second pipe body 732. After the connection step S20, the installation method 30 of the energy storage system further includes:

[0463] Step S30: Open the first switch valve 734 and the second switch valve 735.

[0464] Before implementing the energy storage system installation method 30, both the first switching valve 734 and the second switching valve 735 are in the closed state to reduce the risk of coolant leakage in the first pipe body 731 and the second pipe body 732. Therefore, after implementing the connection step S20, the opening step S30 also needs to be implemented.

[0465] When implementing the energy storage system installation method 30, the stacking step S10 is performed first, followed by the connection step S20, and finally the opening step S30 is performed.

[0466] After connecting the connecting pipe 733 to the first pipe body 731 and the second pipe body 732, the first switch valve 734 and the second switch valve 735 can be opened to connect the first pipe body 731 and the connecting pipe 733, and the second pipe body 732 and the connecting pipe 733, so as to realize the circulation of coolant.

[0467] Please refer to Figures 1 to 24 for some embodiments of this application.

[0468] This application provides an energy storage system 10, which includes a first compartment 100, a first battery device 300, a second compartment 200, a second battery device 400, and a thermal management module 500. The first compartment 100 houses the first battery device 300. The second compartment 200 houses the second battery device 400. The first compartment 100 and the second compartment 200 are stacked along their height, with the first compartment 100 located above the second compartment 200. The thermal management module 500 manages the temperature of the first battery device 300 and the second battery device 400. The thermal management module 500 includes a heat dissipation module 510, which is located on top of the first compartment 100 and covers at least a portion of the first battery device 300. By configuring a first compartment 100 and a second compartment 200, the first battery device 300 is housed within the first compartment 100, and the second battery device 400 is housed within the second compartment 200. The first compartment 100 and the second compartment 200 are stacked along their height. This reduces the footprint of the energy storage system 10, thereby increasing the energy density per unit area and improving the area energy density of the energy storage system 10. Furthermore, the first compartment 100 and the second compartment 200 can be transported separately, reducing transportation difficulty and costs. The energy storage system 10 uses a thermal management module 500 to manage the thermal of the first battery device 300 and the second battery device 400. This reduces the number of thermal management modules 500 required, lowers the production cost of the energy storage system 10, reduces its space requirements, and ultimately improves its volumetric energy density. By placing the heat dissipation module 510 on top of the first compartment 100, at least a portion of the thermal management module 500 can share a floor space with the container. Given a fixed total energy of the energy storage system 10, the system can have a smaller volume, resulting in a smaller floor space and increased energy density per unit area. Furthermore, fewer obstructions above the heat dissipation module 510 improve its heat dissipation performance, thereby enhancing the thermal management module 500's efficiency and reducing auxiliary power consumption. By covering at least a portion of the first battery device 300 with the heat dissipation module 510, the temperature impact of solar radiation on the first battery device 300 can be reduced, improving the temperature consistency between the first battery device 300 and the second battery device 400.

[0469] The heat dissipation module 510 is housed inside the first compartment 100. Housed within the first compartment 100, the integration of the energy storage system 10 is improved. During transportation and assembly, the heat dissipation module 510 can be transported and assembled together with the first compartment 100, which helps reduce transportation and assembly costs.

[0470] The first compartment 100 includes an isolation layer 140. The first battery device 300 and the thermal management module 500 are located on opposite sides of the isolation layer 140. Along the height direction, the thermal management module 500 is located on the side of the isolation layer 140 facing away from the second compartment 200. The isolation layer 140 separates the thermal management module 500 and the first battery device 300, which helps reduce the risk of interference between the thermal management module 500 and the first battery device 300, thereby improving the reliability of the energy storage system 10.

[0471] Both the first battery device 300 and the second battery device 400 include a thermal management component 320, and the insulating layer 140 is provided with a first lead-out hole 141. The energy storage system 10 includes a main pipe 710, a first main pipe 720, and a second main pipe 730. One end of the main pipe 710 is connected to the thermal management module 500, and the other end of the main pipe 710 passes through the first lead-out hole 141 and is connected to the first main pipe 720 and the second main pipe 730. The first main pipe 720 is connected to the thermal management component 320 of the first battery device 300, and the second main pipe 730 is connected to the thermal management component 320 of the second battery device 400. Since only the main pipe 710 needs to pass through the insulating layer 140, the first main pipe 720 and the second main pipe 730 do not need to pass through the insulating layer 140, which helps to reduce the number of perforations.

[0472] The second main pipe 730 includes a first pipe body 731 and a second pipe body 732. The first pipe body 731 is at least partially disposed within the first compartment 100 and is connected to the main pipe 710. The second pipe body 732 is at least partially disposed within the second compartment 200 and is connected to the thermal management component 320 of the second battery device 400. The first pipe body 731 and the second pipe body 732 are detachably connected. This detachable connection allows the first pipe body 731 and the second pipe body 732 to be separated during transportation, facilitating the separate transportation of the first compartment 100 and the second compartment 200, thereby reducing transportation difficulty and costs.

[0473] The second main pipe 730 also includes a connecting pipe 733, through which the first pipe body 731 and the second pipe body 732 are detachably connected. By providing the connecting pipe 733, one end of the connecting pipe 733 is detachably connected to the first pipe body 731, and the other end of the connecting pipe 733 is detachably connected to the second pipe body 732, thereby reducing the difficulty of separating the first pipe body 731 and the second pipe body 732.

[0474] The first pipe body 731 is equipped with a first switching valve 734, which is configured to connect or disconnect the first pipe body 731 and the connecting pipe 733. The second pipe body 732 is equipped with a second switching valve 735, which is configured to connect or disconnect the second pipe body 732 and the connecting pipe 733. Since the energy storage system 10 needs to be tested before leaving the factory, the first pipe body 731, the connecting pipe 733, and the second pipe body 732 already contain coolant. When it is necessary to disassemble the connecting pipe 733, the first switching valve 734 and the second switching valve 735 can be closed first, thereby disconnecting the first pipe body 731 and the connecting pipe 733, and disconnecting the second pipe body 732 and the connecting pipe 733. In this way, the coolant in the first pipe body 731 and the second pipe body 732 is less likely to leak when disassembling the connecting pipe 733. During assembly, the connecting pipe 733 is first connected to the first pipe body 731 and the second pipe body 732. Then, the first switch valve 734 and the second switch valve 735 are opened to connect the first pipe body 731 and the connecting pipe 733, and the second pipe body 732 and the connecting pipe 733, so as to realize the circulation of coolant.

[0475] The connecting pipe 733 is provided with a vent 736 and a drain 737, with the vent 736 positioned higher than the drain 737. The vent 736 is equipped with a first switch 738, configured to open or close the vent 736. The drain 737 is equipped with a second switch 739, configured to open or close the drain 737. Before disassembling the connecting pipe 733, it already contains coolant. To facilitate disassembly, the vent 736 can be opened first via the first switch 738 to balance the air pressure inside and outside the connecting pipe 733, and then the drain 737 can be opened via the second switch 739 to release the coolant from the connecting pipe 733.

[0476] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

An energy storage system, wherein, include: A first compartment and a first battery device, wherein the first compartment houses the first battery device; The second compartment contains the second battery device, and the first compartment and the second compartment are stacked along the height direction, with the first compartment located above the second compartment. as well as A thermal management module is provided for managing the temperature of the first battery device and the second battery device. The thermal management module includes a heat dissipation module located on top of the first compartment and covering at least a portion of the first battery device. According to the energy storage system of claim 1, wherein, The heat dissipation module is housed inside the first compartment. According to the energy storage system of claim 2, wherein, The first compartment includes an isolation layer that divides the first compartment into a first sub-compartment and a second sub-compartment. Along the height direction, the first sub-compartment is located on the side of the second sub-compartment opposite to the second compartment. The heat dissipation module is housed in the first sub-compartment, and the first battery device is housed in the second sub-compartment. According to the energy storage system of claim 3, wherein, The first compartment has a first top wall and a first side wall. The first top wall is connected to the top of the first side wall. Along the height direction, the first top wall is located on the side of the isolation layer away from the second compartment. The first top wall and / or the first side wall are provided with ventilation openings for ventilation of the heat dissipation module. According to the energy storage system of claim 3 or 4, wherein, The thermal management module is housed within the first sub-compartment. According to the energy storage system of claim 1, wherein, The heat dissipation module is located on the outside of the first compartment. According to the energy storage system of claim 6, wherein, The first chamber includes an isolation layer, the energy storage system includes a protective frame, the protective frame is detachably connected to the isolation layer, and the heat dissipation module is disposed inside the protective frame. According to the energy storage system of claim 7, wherein, The thermal management module is located inside the protective frame. According to the energy storage system of claim 8, wherein, The protective frame includes a crossbeam and multiple uprights. The multiple uprights are spaced apart circumferentially along the isolation layer. The crossbeam connects the multiple uprights. One end of each upright is detachably connected to the isolation layer, and the other end of each upright is detachably connected to the crossbeam. Along the direction from the second compartment to the first compartment, the thermal management module does not extend beyond the upper surface of the crossbeam. According to the energy storage system of claim 9, wherein, The height of the thermal management module is lower than the height of the column. The energy storage system according to any one of claims 8-10, wherein, The protective frame has the same length dimension as the first compartment body, and the protective frame has the same width dimension as the first compartment body. The energy storage system according to any one of claims 1-11, wherein, The thermal management module includes a housing, the heat dissipation module is disposed inside the housing, the housing has an air inlet on one side along a first direction, and the housing has an air outlet on the top wall, the first direction being perpendicular to the height direction. According to the energy storage system of claim 12, wherein, The first compartment has a first top wall and a first side wall, the first top wall is connected to the top of the first side wall, and both the first top wall and the first side wall are provided with ventilation openings; The ventilation opening located on the first top wall is connected to the air outlet, and the ventilation opening located on the first side wall is connected to the air inlet. According to the energy storage system of claim 12 or 13, wherein, The heat dissipation module includes a fan and a condenser. Along the first direction, the condenser is disposed between the air inlet and the fan, and the fan is used to dissipate heat from the condenser. According to the energy storage system of claim 14, wherein, The condenser fan is located inside the housing. The energy storage system according to any one of claims 1-15, wherein, The thermal management module includes a housing, and the heat dissipation module is disposed within the housing; Along the height direction, the dimensions of the housing are greater than or equal to 300 mm and less than or equal to 550 mm. The energy storage system according to any one of claims 1-16, wherein, Both the first battery device and the second battery device include thermal management components, and the heat dissipation module includes a condenser; The thermal management module further includes a pumping device, a heat exchanger, a compressor, and a throttling device. The pumping device, the heat exchanger, and the thermal management components of the first battery device are connected to form a first coolant circulation loop. The pumping device, the heat exchanger, and the thermal management components of the second battery device are connected to form a second coolant circulation loop. The compressor, the condenser, the throttling device, and the heat exchanger are connected to form a refrigerant circulation loop. The energy storage system according to any one of claims 1-17, wherein, The first compartment includes an insulating layer, the first battery device and the thermal management module are respectively located on both sides of the insulating layer, and along the height direction, the thermal management module is located on the side of the insulating layer opposite to the second compartment. According to the energy storage system of claim 18, wherein, Both the first battery device and the second battery device include a thermal management component, and the insulating layer is provided with a first lead-out hole; The energy storage system includes a main pipe, a first main pipe, and a second main pipe. One end of the main pipe is connected to the thermal management module, and the other end of the main pipe passes through the first outlet hole and is connected to the first main pipe and the second main pipe. The first main pipe is connected to the thermal management component of the first battery device, and the second main pipe is connected to the thermal management component of the second battery device. According to the energy storage system of claim 19, wherein, The first compartment contains a plurality of first battery devices, which are arranged in rows and columns. The plurality of first battery devices in each row are arranged along the length of the first compartment, and the plurality of first battery devices in each column are arranged along the height. The energy storage system also includes a plurality of first branches, each of which is connected to the thermal management component of the plurality of first battery devices in a column. The first main pipe is connected to the plurality of first branches and the main pipe. and / or The second compartment contains a plurality of second battery devices, which are arranged in rows and columns. The plurality of second battery devices in each row are arranged along the length of the second compartment, and the plurality of second battery devices in each column are arranged along the height. The energy storage system also includes a plurality of second branches, each of which is connected to the thermal management component of the plurality of second battery devices in a column. The second main pipe is connected to the plurality of second branches and the main pipe. According to the energy storage system of claim 19 or 20, wherein, The energy storage system includes a first seal that seals the main pipe and the isolation layer. According to the energy storage system of claim 21, wherein, The isolation layer is provided with a first flange, which is sealed to the isolation layer. The main pipe is provided with a second flange, which is sealed to the main pipe. Both the first flange and the second flange are arranged around the main pipe. The first sealing element is disposed between the first flange and the second flange. The energy storage system according to any one of claims 19-22, wherein, The second main pipe includes a first pipe body and a second pipe body. The first pipe body is at least partially disposed in the first compartment and is connected to the main pipe. The second pipe body is at least partially disposed in the second compartment and is connected to the thermal management component of the second battery device. The first pipe body and the second pipe body are detachably connected. According to the energy storage system of claim 23, wherein, The second main tube also includes a connecting tube, through which the first tube body and the second tube body are detachably connected. According to the energy storage system of claim 24, wherein, The first pipe body is provided with a first switching valve, which is configured to connect or disconnect the first pipe body and the connecting pipe. The second pipe body is provided with a second switching valve, which is configured to connect or disconnect the second pipe body and the connecting pipe. According to the energy storage system of claim 25, wherein, The connecting pipe is provided with an air inlet and an exhaust outlet, with the air inlet positioned higher than the exhaust outlet. The vent is provided with a first switch, which is configured to open or close the vent. The discharge port is provided with a second switch, which is configured to open or close the discharge port. According to the energy storage system of claim 26, wherein, The second switching element has an open state where the discharge port is open and a closed state where the discharge port is closed; The energy storage system further includes a draining device with a draining channel. The draining device is used to cooperate with the second switch to switch the second switch from the closed state to the open state, so as to connect the drain outlet and the draining channel. The energy storage system according to any one of claims 24-27, wherein, The thermal management module includes an expansion tank, a pumping device, and a heat exchanger. The pumping device, the heat exchanger, the thermal management component of the second battery device, and the expansion tank are connected to form a second coolant circulation loop. The second coolant circulation loop includes a second main pipe. The energy storage system according to any one of claims 24-28, wherein, At least one of the first tube, the second tube, and the connecting tube includes a deformable tube. The energy storage system according to any one of claims 23-29, wherein, The first compartment includes a first bottom wall with a second outlet hole. The second compartment includes a second top wall with a third outlet hole. The second main pipe passes through the second outlet hole and the third outlet hole. According to the energy storage system of claim 30, wherein, The energy storage system includes a connecting component, which is connected to the first bottom wall and the second top wall, and the second main pipe passes through the connecting component. According to the energy storage system of claim 31, wherein, The communication component includes a first connector, a second connector, and a second sealing member, wherein the first connector is connected to the first bottom wall and is arranged around the second main pipe; The second top wall is provided with a second connector, which is sealed to the second top wall and surrounds the second main pipe; The energy storage system further includes a second seal that seals the first connector and the second connector. According to the energy storage system of claim 32, wherein, Along the direction from the second compartment to the first compartment, the second connector protrudes from the upper surface of the second top wall. The energy storage system according to claim 32 or 33, wherein, The first connector and the second connector are plugged into each other. The first connector has a first sealing part and the second connector has a second sealing part. Along the height direction, the first sealing part and the second sealing part are disposed opposite to each other, and the second sealing part is located on the side of the first sealing part away from the isolation layer. The second sealing member is disposed between the first sealing part and the second sealing part. The energy storage system according to any one of claims 18-34, wherein, Both the first battery device and the second battery device include thermal management components; The thermal management module further includes a pumping device and a heat exchanger. The pumping device, the heat exchanger, and the thermal management component of the first battery device are connected to form a first coolant circulation loop. The pumping device, the heat exchanger, and the thermal management component of the second battery device are connected to form a second coolant circulation loop. The isolation layer is provided with a fourth outlet hole, and the energy storage system also includes a replenishment pipe. One end of the replenishment pipe is connected to the thermal management module, and the other end of the replenishment pipe passes through the fourth outlet hole and extends to the side of the isolation layer away from the thermal management module. The replenishment pipe is used to replenish coolant to the first coolant circulation loop and the second coolant circulation loop. The energy storage system according to any one of claims 18-35, wherein, The isolation layer is provided with a fifth outlet hole. The energy storage system also includes a maintenance box. The maintenance box is connected to the thermal management module via a wire. The wire passes through the fifth outlet hole. The maintenance box is disposed in the first compartment and is located on the side of the isolation layer away from the thermal management module. The energy storage system according to claim 18, 35 or 36, wherein, Both the first battery device and the second battery device include a thermal management component, and the insulating layer is provided with a sixth lead-out hole and a seventh lead-out hole; The energy storage system includes a first main pipe and a second main pipe. One end of the first main pipe is connected to the thermal management module, and the other end of the first main pipe passes through the sixth lead-out hole and is connected to the thermal management component of the first battery device. One end of the second main pipe is connected to the thermal management module, and the other end of the second main pipe passes through the seventh lead-out hole and is connected to the thermal management component of the second battery device. The energy storage system according to any one of claims 1-37, wherein, The dimensions of both the first and second compartments along the height direction are smaller than the dimensions of a standard container along the height direction. According to the energy storage system of claim 38, wherein, The dimensions of the first and second compartments along the height direction are both greater than or equal to one-third times the dimensions of the standard container along the height direction. The energy storage system according to claim 38 or 39, wherein, The dimensions of the first and second compartments along the height direction are both greater than or equal to half the dimensions of the standard container along the height direction. The energy storage system according to any one of claims 38-40, wherein, The sum of the dimensions of the first and second compartments along the height direction is greater than or equal to the dimension of a standard container along the height direction. The energy storage system according to any one of claims 38-41, wherein, The dimensions of the first compartment and the second compartment along the height direction are both greater than or equal to 805 mm and both less than 2896 mm. The energy storage system according to any one of claims 38-42, wherein, The heat dissipation module is housed inside the first compartment, and the dimension of the first compartment along the height direction is larger than the dimension of the second compartment along the height direction. The energy storage system according to any one of claims 38-43, wherein, The dimensions of the first and second compartments along their length are the same as those of a standard container along its length, and the dimensions of the first and second compartments along their width are the same as those of the standard container along its width. The energy storage system according to any one of claims 1-44, wherein, The total weight of the first compartment and the components disposed within the first compartment is less than or equal to 36 tons; and / or The total weight of the second compartment and the components disposed within the second compartment is less than or equal to 36 tons. The energy storage system according to any one of claims 1-45, wherein, The energy storage system further includes a control module, a first battery monitoring circuit, and a second battery monitoring circuit. The first battery monitoring circuit is used to collect first data of the first battery device, and the second battery monitoring circuit is used to collect second data of the second battery device. The control module is used to determine the operating status data of the energy storage system, and the operating status data of the energy storage system is associated with the first data and the second data. According to the energy storage system of claim 46, wherein, The energy storage system further includes a first sub-control module and a second sub-control module. The first sub-control module is communicatively connected between the first battery monitoring circuit and the control module, and the second sub-control module is communicatively connected between the second battery monitoring circuit and the control module. The energy storage system according to claim 46, wherein, The first battery monitoring circuit is directly connected to the control module, and the second battery monitoring circuit is also directly connected to the control module. The energy storage system according to any one of claims 46-48, wherein, The control module is housed in either the first compartment or the second compartment. A method for disassembling an energy storage system, wherein, For disassembling an energy storage system according to any one of claims 1-49, the energy storage system includes a second main pipe, the second main pipe including a first pipe body and a second pipe body, the first pipe body being at least partially disposed within a first compartment and connected to the thermal management module, the second pipe body being at least partially disposed within the second compartment and connected to the thermal management component of the second battery device, the first pipe body and the second pipe body being detachably connected, and the method for disassembling the energy storage system includes: Disconnection step: Separate the first tube and the second tube; Separation step: Separate the first compartment and the second compartment. The disassembly method of the energy storage system according to claim 50, wherein, The second main pipe also includes a connecting pipe, and the first pipe body and the second pipe body are detachably connected through the connecting pipe; The disconnection step includes: Separate the connecting pipe from the first pipe body, and then separate the connecting pipe from the second pipe body. The disassembly method of the energy storage system according to claim 51, wherein, The first pipe body is provided with a first switching valve, and the second pipe body is provided with a second switching valve; Prior to the disconnection step, the disassembly method of the energy storage system further includes: Closing procedure: Close the first switching valve and the second switching valve. The disassembly method of the energy storage system according to claim 52, wherein, The method for dismantling the energy storage system after the shutdown step and before the disconnection step further includes: Drainage procedure: Drain the coolant from the connecting pipe. The disassembly method of the energy storage system according to claim 53, wherein, The connecting pipe is provided with a vent and a discharge port. The vent is positioned higher than the discharge port. The vent is provided with a first switch and the discharge port is provided with a second switch. The draining step includes: opening the vent through the first switch and opening the drain through the second switch to drain the coolant from the connecting pipe. An installation method for an energy storage system, wherein, For installing an energy storage system according to any one of claims 1-49, the thermal management module is connected to a first tube body, the first tube body being at least partially disposed within the first compartment, and the second battery device is connected to a second tube body, the second tube body being at least partially disposed within the second compartment. The installation method of the energy storage system includes: Stacking step: Stack the first compartment on top of the second compartment; Connection steps: Connect the first tube and the second tube. The installation method of the energy storage system according to claim 55, wherein, The energy storage system further includes a connecting pipe; the connection step includes: The first tube and the second tube are connected by the connecting pipe. The installation method of the energy storage system according to claim 55 or 56, wherein, The first pipe body is provided with a first switching valve, and the second pipe body is provided with a second switching valve; Following the connection step, the installation method of the energy storage system further includes: Opening procedure: Open the first switching valve and the second switching valve.

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