Energy storage device, energy storage system and charging network

Abstract

The utility model relates to the field of energy storage, and provides an energy storage device, an energy storage system and a charging network. The energy storage device comprises a box body, a battery device, a heat management component and a liquid cooling system. The box body is provided with a side wall, and the side wall is provided with a first opening. The liquid cooling system comprises a first heat exchange assembly and a second heat exchange assembly, the second heat exchange assembly is arranged in the box body and connected with the heat management component to form a first circulation loop, the first heat exchange assembly comprises a shell, a first heat exchanger and a fan, and the shell is installed outside the side wall and covers the first opening; the first heat exchanger is arranged in the shell and connected with the second heat exchange assembly to form a second circulation loop. The fan is connected to the shell and used for dissipating heat of the first heat exchanger. Based on the structure, the space, reserved for the first heat exchange assembly, of the box body can be saved, more battery devices can be conveniently integrated in the box body, the electric quantity and the energy density of the energy storage device can be improved, the heat management performance of the liquid cooling system can be improved, and the heat management requirements of more battery devices can be met.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202410789453.0, filed on June 18, 2024, with the State Intellectual Property Office of the People's Republic of China, entitled "Energy Storage Device, Energy Storage System and Charging Network", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of energy storage technology, and in particular relates to an energy storage device, an energy storage system and a charging network. Background Technology

[0004] Energy storage devices typically include a housing, and integrated battery units and a liquid cooling system within the housing. The liquid cooling system is used for thermal management of the battery units. In some cases, it is necessary to integrate more battery units into the housing to increase energy density. However, increasing the number of battery units increases the demands on thermal management and reduces the space originally reserved for the liquid cooling system within the housing, making the installation of the liquid cooling system a challenge. Utility Model Content

[0005] This application provides an energy storage device, an energy storage system, and a charging network, aiming to solve the problem of how to set up a liquid cooling system when integrating more battery devices into a housing to increase energy density.

[0006] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0007] In a first aspect, an energy storage device is provided, the energy storage device comprising:

[0008] The box has a top wall and a bottom wall spaced apart along the direction of gravity, and a side wall connected between the top wall and the bottom wall, and the side wall has a first opening;

[0009] The battery assembly is located inside the casing;

[0010] Thermal management components, located inside the casing, are used to regulate the temperature of the battery pack;

[0011] The liquid cooling system includes a first heat exchange component and a second heat exchange component. The second heat exchange component is disposed inside the housing and connected to a thermal management component to form a first circulation loop. The first heat exchange component includes a housing, a first heat exchanger, and a fan. The housing is mounted outside the side wall and covers a first opening. The first heat exchanger is disposed inside the housing and connected to the second heat exchange component to form a second circulation loop. The fan is connected to the housing and is used to dissipate heat from the first heat exchanger.

[0012] The energy storage device provided in this application embodiment divides the liquid cooling system into a second heat exchange component housed within a casing, and a modular first heat exchange component installed on the outside of the side wall with a closed first opening. This facilitates the connection between the second heat exchange component and a thermal management component housed within the casing to form a first circulation loop, and also facilitates the connection and interaction between the first heat exchange component and the second heat exchange component via the first opening to form a second circulation loop. This saves space originally reserved for the first heat exchange component within the casing (i.e., frees up space), allowing for the integration of more battery devices within the casing and increasing the energy capacity and energy density of the energy storage device.

[0013] Furthermore, the liquid cooling system can directly exchange heat with the battery device through the first circulation loop formed by the second heat exchange component and the thermal management component; the liquid cooling system can also exchange heat with the first circulation loop through the second circulation loop formed by connecting the first heat exchanger of the first heat exchange component and the second heat exchange component, thereby removing heat from the first circulation loop; the liquid cooling system can also dissipate the heat of the first heat exchanger to the outside of the casing through the fan of the first heat exchange component. Therefore, the liquid cooling system can achieve rapid and reliable cooling of the battery device, improve the thermal management performance of the liquid cooling system, facilitate the integration of the liquid cooling system with the thermal management component to meet the thermal management needs of more battery devices, and help improve the reliability and service life of various components of the energy storage device. In particular, since both the fan and the first heat exchanger are installed on the outer side of the sidewall, they are placed in the same space on the outer side of the sidewall. This optimizes the layout between the fan and the first heat exchanger, allowing the airflow generated by the fan to flow over the first heat exchanger over a large area. This facilitates direct thermal interaction between the fan and the first heat exchanger, optimizes the fan's airflow field, and improves the heat dissipation effect and efficiency of the fan on the first heat exchanger. It also reduces the risk of hot air lingering inside the enclosure and causing heat radiation to other components, thereby improving the heat dissipation and thermal management performance of the first heat exchange component and the thermal management performance of the liquid cooling system. Furthermore, due to the optimized fan airflow field and improved fan heat dissipation effect, the fan can achieve the same heat dissipation effect at a lower speed compared to existing technologies. This reduces the required startup speed of the fan, thereby reducing fan noise and the noise level of the energy storage device during operation, improving the performance and user experience of the energy storage device. Furthermore, due to the large usable space outside the casing, it is easier to select a larger model of the first heat exchanger, which is beneficial to optimizing the heat exchange performance of the first heat exchanger.

[0014] Furthermore, since the first heat exchange component is installed on the outer periphery of the enclosure, it can be positioned within the existing installation distance between adjacent enclosures in a practical setting. This means the existing installation distance between adjacent enclosures can accommodate the externally mounted first heat exchange component without increasing the distance or the enclosure's footprint. Therefore, with a fixed number of enclosures on site, integrating more battery devices within the enclosures can increase the energy storage capacity and energy density, thereby improving the overall energy density of the site. Conversely, with a fixed number of battery devices on site, integrating more battery devices within the enclosures reduces the number of energy storage devices required, saving space and construction costs.

[0015] Furthermore, the external first heat exchange component can form a modular structure, which facilitates the assembly, maintenance and replacement of the first heat exchange component. Since the connection between the first heat exchanger and the second heat exchange component does not require a large opening, it is convenient to carry out dustproof and waterproof protection measures on the first heat exchange component as a whole, which helps to ensure that the dustproof and waterproof performance of the energy storage device meets the requirements.

[0016] Furthermore, with the first opening of the outer casing open, it is convenient to assemble, maintain, and even replace components such as the second heat exchanger inside the casing through the first opening, and it also facilitates the connection and interaction between the second heat exchanger and the first heat exchanger inside the casing. When the first opening of the outer casing is closed, the protection performance of the second heat exchanger and other components inside the casing is improved, thereby helping to improve the reliability and service life of the second heat exchanger and other components inside the casing.

[0017] In some embodiments, the second heat exchange assembly includes a pumping device and a second heat exchanger;

[0018] The pumping device, the second heat exchanger, and the thermal management component are connected in sequence, and the thermal management component is connected to the pumping device to form a first circulation loop.

[0019] By adopting the above scheme, the second heat exchange component, together with the thermal management component, forms a first circulation loop via a pumping device and a second heat exchanger. The pumping device drives the heat exchange medium to circulate along the first circulation loop. Based on this, in the first circulation loop, the heat exchange medium circulates through the thermal management component to directly exchange heat with the battery device, thereby cooling the battery device. After exchanging heat with the battery device, the heat exchange medium circulates through the second heat exchanger and exchanges heat with it, transferring the heat from the battery device to the second heat exchanger, thus cooling the heat exchange medium. Therefore, the circulating heat exchange medium can quickly and effectively cool the battery device, providing better heat dissipation. This improves the heat dissipation and thermal management performance of the second heat exchange component and the thermal management component, enhancing the reliability and lifespan of the battery device and energy storage device. Furthermore, it effectively simplifies and optimizes the structure of the second heat exchange component and the liquid cooling system, reducing the space occupied by the liquid cooling system, especially the second heat exchange component.

[0020] In some embodiments, the second heat exchange assembly further includes a compressor and a throttling device; the compressor, the first heat exchanger, the throttling device, and the second heat exchanger are connected in sequence, and the second heat exchanger is connected to the compressor to form a second circulation loop.

[0021] By adopting the above scheme, the liquid cooling system and thermal management components can form a multi-stage cooling scheme through a combination of a first circulation loop, a second circulation loop, and a fan. In this multi-stage cooling scheme, the heat exchange medium in the second circulation loop and the heat exchange medium in the first circulation loop can exchange heat in the second heat exchanger to transfer heat from the first circulation loop to the second circulation loop, thereby cooling the heat exchange medium in the first circulation loop. This facilitates the cyclical application of the heat exchange medium in the first circulation loop to cool the battery device. In this multi-stage cooling scheme, the heat exchange medium in the second circulation loop can circulate through the first heat exchanger and exchange heat with it, transferring the heat from the first circulation loop to the first heat exchanger, resulting in initial cooling of the heat exchange medium in the second circulation loop. After exchanging heat with the first heat exchanger, the heat exchange medium can also circulate through a throttling device in the second circulation loop to cool and depressurize the heat exchange medium. This facilitates the cyclical application of the heat exchange medium in the second circulation loop to cool the first circulation loop. In this multi-stage cooling scheme, a fan can be activated to generate airflow through the first heat exchanger and out of the housing, thereby dissipating the heat from the first heat exchanger to the outside of the housing. Thus, the heat from the battery device can be dissipated to the outside of the housing sequentially via the first circulation loop, the second circulation loop, and the fan. This improves the heat dissipation and thermal management performance of the liquid cooling system and thermal management components, enhancing the reliability and lifespan of the battery device and energy storage device. Furthermore, based on the configuration of this embodiment, due to the optimized heat exchange airflow between the fan and the first heat exchanger, the compressor's operating frequency can be correspondingly reduced (i.e., the compressor does not need to operate continuously and can rest intermittently), thereby extending the compressor's lifespan and reducing the power consumption of the energy storage device.

[0022] In some embodiments, the first heat exchange assembly further includes a third heat exchanger disposed within the housing;

[0023] The pumping device, the third heat exchanger, and the thermal management component are connected in sequence, and the thermal management component is connected to the pumping device to form a natural cooling loop; the pumping device is switched to be connected to either the first circulation loop or the natural cooling loop.

[0024] The fan and the third heat exchanger are aligned along the fan's axial direction.

[0025] By adopting the above scheme, a natural cooling loop can be added between the liquid cooling system and the thermal management components. Based on this, under moderate or high ambient temperatures, the pumping device can be switched to connect to the first circulation loop, allowing the liquid cooling system and thermal management components to cool the battery device normally and effectively through a multi-stage cooling scheme formed by the first circulation loop, the second circulation loop, and the fan. Under low ambient temperatures, the pumping device can be switched to connect to the natural cooling loop, allowing the liquid cooling system and thermal management components to bypass the second circulation loop and instead rely on a natural cooling scheme combining the natural cooling loop and the fan for effective and reliable cooling of the battery device. In the natural cooling scheme, the fan can utilize the low ambient temperature to generate cool air (airflow), quickly and effectively removing heat from the third heat exchanger, thereby improving the heat dissipation performance and thermal management performance of the liquid cooling system and thermal management components for the battery device. Furthermore, implementing a natural cooling scheme in low ambient temperatures bypasses the second circulation loop, eliminating the need for components like the compressor and throttling device that operate the second loop. This reduces the operating time of the compressor and throttling device, lowers power consumption, and ultimately extends their lifespan, saving on the operating costs of the energy storage device. Moreover, the placement of the third heat exchanger within the first heat exchange assembly allows the fan and third heat exchanger to be located in the same space, both on the outer side of the sidewall, optimizing their layout. This facilitates, on one hand, allowing the cool air generated by the fan to flow over a large area of ​​the third heat exchanger, optimizing the heat exchange airflow between the fan and the third heat exchanger, and improving the fan's heat dissipation effect and efficiency. On the other hand, the larger usable space outside the enclosure allows for the selection of a larger third heat exchanger, further optimizing its heat exchange performance. On the one hand, since the connection between the pumping device and the third heat exchanger does not require a large opening, it is convenient to carry out dustproof and waterproof protection measures on the entire first heat exchange component, which helps to ensure that the dustproof and waterproof performance of the energy storage device meets the requirements.

[0026] In some embodiments, the fan is located within the enclosure area of ​​the third heat exchanger.

[0027] By adopting the above scheme, when the first heat exchange component includes a fan and a third heat exchanger, by placing the fan in the enclosed area of ​​the third heat exchanger, the airflow generated by the fan flowing out of the box can form a "through wind" that passes through the third heat exchanger. This facilitates the airflow generated by the fan to pass through the third heat exchanger and carry away the heat of the third heat exchanger, thereby improving the heat dissipation effect of the fan on the third heat exchanger.

[0028] In some embodiments, the third heat exchanger includes a first collector, a plurality of first tubes, and a second collector, wherein the flow channels of the plurality of first tubes are connected in parallel between the flow channels of the first collector and the flow channels of the second collector.

[0029] By adopting the above scheme, the heat exchange medium flowing in the third heat exchanger can converge into one of the channels of the first and second collectors, then diverge into the channels of multiple first tubes, and finally converge into the other channel of the first and second collectors. Based on this, the structure of the third heat exchanger can be optimized, facilitating the flow of the heat exchange medium within it and increasing the heat exchange area between the third heat exchanger and the fan, thereby improving the heat exchange effect of the fan on the third heat exchanger.

[0030] In some embodiments, a portion of the first tube body forms a first tube group, and another portion of the first tube body forms a second tube group. The first tube group is connected between one end of the first current collector and one end of the second current collector, and the second tube group is connected between the other end of the first current collector and the other end of the second current collector.

[0031] By adopting the above scheme, and by dividing multiple first tube bodies into first tube groups and second tube groups, and by placing the first tube groups and second tube groups at intervals at both ends of the first collector, the third heat exchanger can form a near-quadrilateral annular shape. Based on this, regardless of whether the "flow direction of the heat exchange medium in the first tube body of the first tube group" is the same as the "flow direction of the heat exchange medium in the first tube body of the second tube group," the third heat exchanger can form a large heat exchange area based on the first collector, the first tube group, the second collector, and the second tube group. This optimizes the structure of the third heat exchanger, facilitates increasing the heat exchange area between the third heat exchanger and the fan, and helps optimize the heat exchange effect of the fan on the third heat exchanger.

[0032] In some embodiments, the first heat exchanger is located on the side of the third heat exchanger away from the fan.

[0033] By adopting the above scheme, when the first heat exchange assembly includes a first heat exchanger, a third heat exchanger, and a fan, the third heat exchanger can be positioned closer to the fan relative to the first heat exchanger. Based on this, when the ambient temperature is low and the pumping device switches to the natural cooling circuit, the cold air (airflow) generated by the fan can more quickly and directly remove heat from the third heat exchanger, thereby improving the fan's heat dissipation effect and efficiency on the third heat exchanger and reducing the high requirements on the heat exchange capacity of the third heat exchanger.

[0034] In some embodiments, the fan is located within the enclosed area of ​​the first heat exchanger.

[0035] By adopting the above scheme, when the first heat exchange component includes a fan and a first heat exchanger, by placing the fan in the enclosed area of ​​the first heat exchanger, the airflow generated by the fan flowing out of the box can form a "through wind" that passes through the first heat exchanger. This facilitates the airflow generated by the fan to pass through the first heat exchanger and carry away the heat of the first heat exchanger, thereby improving the heat dissipation effect of the fan on the first heat exchanger.

[0036] In some embodiments, the first heat exchanger includes a third collector, a plurality of second tubes, and a fourth collector, wherein the flow channels of the plurality of second tubes are connected in parallel between the flow channels of the third collector and the flow channels of the fourth collector.

[0037] By adopting the above scheme, the heat exchange medium flowing in the first heat exchanger can converge into one of the channels of the third and fourth collectors, then diverge into the channels of multiple second tubes, and finally converge into the other of the channels of the third and fourth collectors. Based on this, the structure of the first heat exchanger can be optimized, facilitating the flow of the heat exchange medium within it and increasing the heat exchange area between the first heat exchanger and the fan, thereby improving the heat exchange effect of the fan on the first heat exchanger.

[0038] In some embodiments, a portion of the second tubes together form a third tube group, and another portion of the second tubes together form a fourth tube group. The third tube group is connected between one end of the third collector and one end of the fourth collector, and the fourth tube group is connected between the other end of the third collector and the other end of the fourth collector.

[0039] By adopting the above scheme, and dividing multiple second tubes into third and fourth tube groups, and distributing the third and fourth tube groups at intervals at both ends of the third collector, the first heat exchanger can form a near-quadrilateral annular shape. Based on this, regardless of whether the flow direction of the heat exchange medium in the second tubes of the third tube group is the same as the flow direction of the heat exchange medium in the second tubes of the fourth tube group, the first heat exchanger can form a large heat exchange area based on the third collector, the third tube group, the fourth collector, and the fourth tube group. This optimizes the structure of the first heat exchanger, facilitates increasing the heat exchange area between the first heat exchanger and the fan, and helps optimize the heat exchange effect of the fan on the first heat exchanger.

[0040] In some embodiments, the second heat exchange component has a first interface and a second interface on the side facing the first heat exchange component, and the outer casing has a third interface and a fourth interface on the side facing the second heat exchange component. The first interface and the third interface are detachably connected through a first pipeline, and the second interface and the fourth interface are detachably connected through a second pipeline. The first interface, the second interface, the third interface, and the fourth interface are all located in the second circulation loop.

[0041] By adopting the above scheme, when the first pipeline is disassembled between the first and third interfaces, and the second pipeline is disassembled between the second and fourth interfaces, the first, second, third, and fourth interfaces can be automatically sealed to encapsulate the heat exchange medium in both parts of the second circulation loop (i.e., the part of the second circulation loop located in the first heat exchange component, and the part of the second circulation loop located in the second heat exchange component), thereby reducing the risk of heat exchange medium leakage. This facilitates the separate transportation, maintenance, and replacement of the first and second heat exchange components. Conversely, by connecting the first pipeline between the first and third interfaces, the area of ​​the second circulation loop corresponding to the first and third interfaces can be connected; similarly, by connecting the second pipeline between the second and fourth interfaces, the area of ​​the second circulation loop corresponding to the second and fourth interfaces can be connected. Based on this, it is convenient to achieve connection and interaction between the first and second heat exchange components, and to facilitate the formation of a second circulation loop between them.

[0042] In some embodiments, at least one of the first interface, the second interface, the third interface, and the fourth interface is a quick-connect connector.

[0043] By adopting the above solution, the sealing performance of at least one of the first, second, third, and fourth interfaces can be improved when no pipeline is connected, and the connection convenience and reliability of at least one of the first, second, third, and fourth interfaces can be improved when a pipeline is connected.

[0044] In some embodiments, the second heat exchange component has a fifth interface and a sixth interface on the side facing the first heat exchange component, and the outer casing has a seventh interface and an eighth interface on the side facing the second heat exchange component. The fifth interface and the seventh interface are detachably connected through a third pipe, and the sixth interface and the eighth interface are detachably connected through a fourth pipe. The fifth interface, the sixth interface, the seventh interface, and the eighth interface are all located in a natural cooling circuit.

[0045] By adopting the above scheme, when the third pipe is disassembled between the fifth and seventh interfaces, and the fourth pipe is disassembled between the sixth and eighth interfaces, the fifth, sixth, seventh, and eighth interfaces can be automatically sealed to encapsulate the heat exchange medium in the two parts of the natural cooling loop (i.e., the part of the natural cooling loop located in the first heat exchange component and the part of the natural cooling loop located in the second heat exchange component), thereby reducing the risk of heat exchange medium leakage. Based on this, the first and second heat exchange components "equipped with a natural cooling loop" can be modularly constructed for separate transportation, maintenance, and replacement. Conversely, by connecting the third pipe between the fifth and seventh interfaces, the area of ​​the natural cooling loop corresponding to the fifth and seventh interfaces can be connected; similarly, by connecting the fourth pipe between the sixth and eighth interfaces, the area of ​​the natural cooling loop corresponding to the sixth and eighth interfaces can be connected. Based on this, it is convenient to achieve connection and interaction between the first and second heat exchange components, and to facilitate the formation of a natural cooling loop between them.

[0046] In some embodiments, the second heat exchange assembly further includes an electric heating element disposed on the first circulation loop.

[0047] By adopting the above scheme, an electric heating element can be configured in the first circulation loop, enabling the first circulation loop to have a cooling mode when the electric heating element is not activated, and a heating mode when the electric heating element is activated. Based on this, when the battery device temperature is lower than the suitable operating temperature, the heat exchange medium can be heated via the activated electric heating element in the heating mode of the first circulation loop. This allows the heat exchange medium to flow through the thermal management components and provide heat to the battery device, thereby heating the battery device and raising its temperature to the suitable operating temperature. This optimizes the thermal management performance of the liquid cooling system.

[0048] In some embodiments, the housing is detachably mounted to the sidewall.

[0049] By adopting the above solution, the modular first heat exchange component can be conveniently, quickly, and reliably installed on the outside of the side wall through the detachable installation of the outer shell. This also facilitates the reliable closure of the first opening by the first heat exchange component, thereby improving the protection performance of the second heat exchange component and other components inside the enclosure. Furthermore, when the outer shell is detached from the enclosure, the first heat exchange component can be assembled, transported, stored, and maintained as a modular structure. It also facilitates the assembly, maintenance, and even replacement of the second heat exchange component and other components inside the enclosure through the first opening, and allows for easy connection and disconnection between the second heat exchange component and the first heat exchange component.

[0050] In some embodiments, the housing is movable relative to the sidewalls to open or close the first opening.

[0051] By adopting the above solution, the outer shell can be movably connected to the housing, enabling a convenient, quick, and reliable connection between the outer shell and the side wall. Furthermore, based on this movable connection, the outer shell can open the first opening relative to the side wall, facilitating the connection and interaction between the second heat exchange component and other components inside the housing, and simplifying maintenance and replacement of these components. The outer shell can also close the first opening relative to the side wall, thereby improving the protection of the second heat exchange component and other components inside the housing, and enhancing their reliability and service life.

[0052] In some embodiments, the housing includes a back frame and a frame mounted on the back frame, a first heat exchanger and a fan are disposed within the frame, and the back frame is detachably mounted to a side wall.

[0053] By adopting the above solution, the outer casing, through a back frame and frame with certain structural strength and rigidity, can accommodate the first heat exchanger and fan, providing reliable dust and water protection, thereby improving the reliability and service life of the first heat exchange component. Furthermore, the outer casing, through the back frame with certain structural strength and rigidity, can be detachably connected to the side wall, allowing for convenient, quick, and reliable installation of the first heat exchange component onto the outside of the side wall, thus improving the installation reliability between the first heat exchange component and the side wall. Moreover, when the back frame is installed on the side wall, it can essentially close the first opening, thereby improving the protection performance of the second heat exchange component and other components inside the casing. Furthermore, when the back frame is detached from the side wall, it facilitates the assembly, transportation, storage, and maintenance of the first heat exchange component as a modular structure. It also facilitates the assembly, maintenance, and even replacement of the second heat exchange component and other components inside the casing through the first opening, and facilitates the connection and disconnection operations between the second heat exchange component and the first heat exchange component inside the casing through the first opening.

[0054] In some embodiments, the back frame is movable relative to the sidewall to open or close the first opening.

[0055] By adopting the above solution, the back frame can be movably connected to the side wall, enabling a convenient, quick, and reliable connection between the back frame and the side wall. Furthermore, based on this movable connection, the back frame can open the first opening relative to the side wall, facilitating the connection and interaction between the second heat exchange component and other parts inside the enclosure, and simplifying maintenance and replacement of these components. The back frame can also close the first opening relative to the side wall, allowing the first heat exchange component to close it, thereby improving the protection of the second heat exchange component and other parts inside the enclosure, and enhancing their reliability and service life.

[0056] In some embodiments, the back frame is hinged to the side wall.

[0057] By adopting the above solution, the back frame can be hinged to the housing, enabling a convenient, quick, and reliable connection between the back frame and the housing. Furthermore, due to the hinge, the back frame can rotate relative to the side wall to open the first opening, facilitating the connection and interaction between the second heat exchange component and other parts inside the housing, and simplifying maintenance and replacement of these components. The back frame can rotate relative to the side wall to adjust the fan's orientation, allowing for flexible adjustment of the direction of the hot airflow. This reduces the risk of the fan blowing towards obstacles (such as walls) and affecting the fan's airflow, thus optimizing the fan's airflow and heat dissipation effect. The back frame can rotate relative to the side wall to close the first opening, thereby improving the protection of the second heat exchange component and other parts inside the housing, and enhancing their reliability and service life.

[0058] In some embodiments, the energy storage device further includes an angle constraint component connected between the back frame and the side wall to constrain the included angle between the back frame and the side wall.

[0059] By adopting the above solution, in some situations, the angle constraint component can constrain the variable range of the angle between the back frame and the side wall, thereby constraining the rotation range of the back frame relative to the side wall, i.e., constraining the opening degree of the back frame relative to the side wall. In other situations, the angle constraint component can constrain the angle between the back frame and the side wall to a preset angle, thereby stabilizing the opening angle of the back frame relative to the side wall. This improves the ease of operation and stability of rotating the back frame relative to the side wall, and reduces the risk of component damage or even personal injury caused by excessive rotation or accidental closure of the back frame.

[0060] In some embodiments, a first bracket is provided on the side of the sidewall facing the back frame, and the first bracket has a first hole; a second bracket is provided on the side of the back frame facing the sidewall, and the second bracket has a sliding groove that extends along the width direction of the back frame.

[0061] The angle constraint component includes a connector, a slider, and a linkage structure. The connector is installed in the first hole, and the slider is slidably installed in the groove. One end of the linkage structure is sleeved on the connector, and the other end of the linkage structure is sleeved on the slider.

[0062] By adopting the above scheme, during the rotation of the back frame relative to the side wall, the linkage structure of the angle constraint component will adaptively rotate around the connector, and the end of the linkage structure connected to the sliding member will reciprocate along the slide groove synchronously with the sliding member. Based on this, the angle constraint component can constrain the rotation range of the linkage structure through the sliding range of the sliding member in the slide groove, thereby constraining the rotation range of the back frame relative to the side wall, constraining the variable range of the angle between the back frame and the side wall, and constraining the degree to which the back frame can open relative to the side wall. This improves the ease of operation and stability of rotating the back frame relative to the side wall, reduces the risk of component damage due to excessive rotation of the back frame, reduces wear and collision between the back frame and the side wall, and improves the performance and service life of the energy storage device. Furthermore, it facilitates adjusting the fan orientation within a preset range, thereby optimizing the fan's airflow and heat dissipation effect.

[0063] In some embodiments, a first bracket is provided on the side of the sidewall facing the back frame, and the first bracket has a second hole; a second bracket is provided on the side of the back frame facing the sidewall, and the second bracket has a third hole.

[0064] The angle constraint component includes a support leg; one end of the support leg is inserted into the second hole, and the other end of the support leg is inserted into the third hole.

[0065] By adopting the above scheme, the angle constraint component can insert one end of the support leg into the second hole and the other end into the third hole, so that the support leg abuts between the first and second supports, and thus abuts between the side wall and the back frame. Based on this, the angle constraint component, through the support leg abutting between the side wall and the back frame, can stabilize the angle between the back frame and the side wall at a preset angle, thereby stabilizing the opening angle of the back frame relative to the side wall. This improves the ease and stability of rotating the back frame relative to the side wall, reduces the risk of component damage or even personal injury due to accidental closure of the back frame, facilitates connection and interaction between components inside the side wall and components on the back frame when the back frame is stably open, facilitates maintenance and replacement of components inside the side wall when the back frame is stably open, and facilitates stabilizing the fan orientation to optimize the fan's airflow and heat dissipation effect. Furthermore, the support leg is detachable from the second hole and also detachable from the third hole. Therefore, it is convenient to rotate the back frame relative to the side wall even when the support leg is detached from the first and second supports. It also makes it easy to replace the legs of different lengths so that the angle between the back frame and the side wall can be stabilized at any required angle.

[0066] In some embodiments, the sidewall has a first edge and a second edge opposite to each other along a first direction, the first direction being perpendicular to the direction of gravity, a first opening adjacent to the first edge and away from the second edge, and a back frame hinged to the side of the first opening near the first edge.

[0067] By adopting the above solution, the back frame can be opened relative to the side wall from the side closest to the first edge, which makes it easier to install other maintenance doors or other components on the side of the first opening closest to the second edge, and reduces the risk of interference between the rotation of the back frame and the maintenance door or other components on the side of the first opening closest to the second edge.

[0068] In some embodiments, the housing further includes an encapsulation plate mounted on the side of the frame opposite to the back frame; a fan is embedded in the encapsulation plate, and at least one of the back frame and the frame has an air inlet.

[0069] By adopting the above solution, the outer shell, through the encapsulation plate, back frame, and frame, forms a fully protective and structurally reliable housing to accommodate components such as the first heat exchanger, achieving reliable dustproof and waterproof protection for these components. This improves the reliability and service life of the first heat exchange component. Furthermore, by embedding the fan in the encapsulation plate, with the fan's installation position being the air outlet, the fan can generate airflow from the air inlet to the air outlet during startup, thereby optimizing the fan's heat dissipation airflow.

[0070] In some embodiments, at least one of the back frame and the frame body is provided with a lifting ring.

[0071] By adopting the above scheme, a lifting ring can be set on at least one of the back frame and the frame body to facilitate convenient, quick and reliable hoisting and transportation of the first heat exchange component as a whole via the lifting ring.

[0072] In some embodiments, the dimensions of the container are those of a standard 20-foot shipping container.

[0073] By adopting the above solution, the energy density and thermal management performance of the energy storage device can be balanced even when the container size is limited.

[0074] In some embodiments, the enclosure includes a battery compartment, an electrical compartment, and a liquid cooling compartment. The battery device and thermal management components are located in the battery compartment, the second heat exchange component is located in the liquid cooling compartment, the electrical compartment is used to house the power distribution module or control module of the energy storage device, the electrical compartment and the liquid cooling compartment are located on the same side of the battery compartment, and the first heat exchange component is located on the outside of the liquid cooling compartment.

[0075] By adopting the above scheme, the enclosure can be divided into a battery compartment for housing the battery device and thermal management components, a liquid cooling compartment for housing the second heat exchange component, and an electrical compartment for housing the power distribution module or control module of the energy storage device. By neatly arranging the electrical compartment and liquid cooling compartment on the same side of the battery compartment, the internal layout of the enclosure is optimized. Based on this, it is convenient to establish the necessary electrical connections between the modules (power distribution module or control module) in the electrical compartment and the adjacent battery device and other components. It is also convenient to connect the second heat exchange component in the liquid cooling compartment and the adjacent thermal management component to form a first circulation loop. Furthermore, since the first heat exchange component is located outside the liquid cooling compartment, it is also convenient to connect the second heat exchange component in the liquid cooling compartment and the adjacent first heat exchange component to form a second circulation loop. Therefore, the layout of the battery device, thermal management components, power distribution module or control module, and second heat exchange component within the enclosure is optimized, the layout of the second heat exchange component outside the enclosure is optimized, the structure of the energy storage device is optimized, and the connection and interaction of the various components of the energy storage device are facilitated.

[0076] Secondly, an energy storage system is provided, which includes the energy storage device provided in the embodiments of this application.

[0077] By adopting the above-described scheme, the energy storage system can improve energy density while taking into account thermal management performance and space utilization by applying the energy storage device provided in the embodiments of this application.

[0078] In some embodiments, multiple energy storage devices are provided, and the multiple energy storage devices are arranged in a matrix;

[0079] In the two energy storage devices arranged side by side along the opening direction of the first opening, the first heat exchange component is installed on the side of the two energy storage devices facing away from each other.

[0080] By adopting the above scheme, the layout of multiple energy storage devices can be optimized, and the space utilization rate of the energy storage system can be improved.

[0081] Thirdly, a charging network is provided, which includes charging piles and an energy storage system provided in the embodiments of this application. The charging piles are electrically connected to the energy storage system, and the energy storage system is used to provide power to the charging piles.

[0082] By adopting the above solution, the charging network can effectively improve its reliability by applying the energy storage device provided in the embodiments of this application, and also help to improve the flexibility of the charging network during deployment. Attached Figure Description

[0083] To clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0084] Figure 1 A perspective view of an energy storage device provided in some embodiments of this application;

[0085] Figure 2 The diagram below shows the structure of an energy storage device provided in some embodiments of this application, wherein the energy storage device includes a first circulation loop, a second circulation loop, and a natural cooling loop;

[0086] Figure 3 An exploded view of the back frame, frame, and first heat exchange assembly provided in some embodiments of this application;

[0087] Figure 4 for Figure 3 A three-dimensional schematic diagram of the first heat exchange component provided;

[0088] Figure 5 for Figure 4 A magnified view of area A is provided.

[0089] Figure 6 for Figure 4 A magnified view of region B is provided.

[0090] Figure 7 Side view of an energy storage device provided for some embodiments of this application;

[0091] Figure 8 This is a partial structural schematic diagram of an energy storage device provided in some embodiments of this application;

[0092] Figure 9 for Figure 8 A magnified view of region C is provided.

[0093] Figure 10 An exploded view of the first support, the second support, and the angle constraint assembly provided in some embodiments of this application;

[0094] Figure 11 A schematic diagram showing the arrangement of the battery compartment, electrical compartment, liquid cooling compartment, and first heat exchange component provided in some embodiments of this application;

[0095] Figure 12 This application provides schematic diagrams of the structure of an energy storage system according to some embodiments.

[0096] Figure 13This application provides schematic diagrams showing the arrangement of two energy storage devices in some embodiments.

[0097] Figure 14 A schematic diagram of the arrangement of four energy storage devices provided in some embodiments of this application;

[0098] Figure 15 This is a schematic diagram of the structure of a charging network provided in some embodiments of this application.

[0099] The following are the labeling elements in the figure:

[0100] 10-Box body, 11-Top wall, 12-Bottom wall, 13-Side wall, 131-First opening, 132-First bracket, 1321-First hole, 1322-Second hole, 133-First edge, 134-Second edge, 14-Battery compartment, 15-Electrical compartment, 16-Liquid cooling compartment; 20-Battery unit; 30-Thermal management component; 40-Liquid cooling system, 41-First heat exchange assembly, 411-Fan, L-Axis of fan, 412-First heat exchanger, 4121-Second heat exchanger Three manifolds, 4122-Second tube body, 4123-Fourth manifold, 4124-Third tube group, 4125-Fourth tube group, 413-Third heat exchanger, 4131-First manifold, 4132-First tube body, 4133-Second manifold, 4134-First tube group, 4135-Second tube group, 414-Third interface, 415-Fourth interface, 416-Seventh interface, 417-Eighth interface; 418-Outer shell, a-Width direction of the back frame, 4181 - Second bracket, 41811- Slide groove, 41812- Third hole, 4182- Back frame, 4183- Frame, 41831- Air inlet, 4184- Encapsulation plate, 4185- Lifting ring; 42- Second heat exchange assembly, 421- Pumping device, 422- Second heat exchanger, 423- Compressor, 424- Throttling device, 425- First interface, 426- Second interface, 427- Fifth interface, 428- Sixth interface, 429- Electric heating element; 43- First Pipeline, 44-Second pipeline, 45-Third pipeline, 46-Fourth pipeline; 50-Hinge; 60-Angle constraint assembly, 61-Connector, 62-Slider, 63-Linkage structure, 64-Feet; 70-First support frame, 80-Second support frame; 40a-First circulation loop, 40b-Second circulation loop, 40c-Natural cooling loop; x-First direction, 1-Energy storage device, 2-Power generation device, 3-Power conversion device, 4-Charging pile, 401-Connector. Detailed Implementation

[0101] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clear, the application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application. Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. Unless otherwise specified, all technical features and optional technical features of this application can be combined to form new technical solutions.

[0102] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing 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, and therefore should not be construed as a limitation of this application.

[0103] Furthermore, the terms "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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0104] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0105] Energy storage devices are devices for storing and transferring electrical energy. They typically include a housing, a battery pack integrated within the housing, and a liquid cooling system. The liquid cooling system manages the thermal performance of the battery pack, ensuring it remains within a suitable temperature range. This maintains the battery pack's charge / discharge capacity and reliability, and reduces the risk of thermal runaway.

[0106] In some cases, it is necessary to integrate more battery devices into the enclosure to increase energy density. However, increasing the number of battery devices increases thermal management requirements and reduces the space originally reserved for the liquid cooling system, making the installation of the liquid cooling system a challenge. In other words, how to design the liquid cooling system when integrating more battery devices into the enclosure to increase energy density becomes a pressing issue.

[0107] Therefore, some embodiments of this application provide an energy storage device that divides the liquid cooling system into a second heat exchange component housed within a casing, and a modular first heat exchange component installed on the outside of the side wall and closing the first opening. Based on this, on the one hand, the space originally reserved for the first heat exchange component within the casing can be saved (i.e., freeing up space), thereby facilitating the integration of more battery devices within the casing and increasing the energy capacity and energy density of the energy storage device. On the other hand, since the first heat exchange component is located outside the casing, the liquid cooling system can directly dissipate heat to the outside of the casing via the first heat exchange component, thereby improving the thermal management performance of the liquid cooling system. This allows the liquid cooling system to work with thermal management components to meet the thermal management needs of more battery devices, improving the reliability and lifespan of the various components of the energy storage device. Furthermore, the externally mounted first heat exchange component can form a modular structure, facilitating its assembly, maintenance, and replacement.

[0108] The energy storage device disclosed in this application can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems, etc. The energy storage device disclosed in this application can store electrical energy as needed and output electrical energy when appropriate. For example, the energy storage device 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 can be any power system that requires the use of an energy storage device.

[0109] To illustrate the technical solutions provided in this application, a detailed description is provided below in conjunction with specific accompanying drawings and embodiments.

[0110] This application provides an energy storage device including one or more battery clusters to improve the voltage and capacity of the energy storage device. In the case where the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0111] A battery cluster may include multiple battery apparatuses connected in series via busbars to increase the voltage of the energy storage device. A battery apparatus may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via busbars.

[0112] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. 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 a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0113] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more battery cell assemblies housed within the housing. As an example, the battery cell assembly may be a battery module, which can be housed within the housing by securing the battery module to the housing. Alternatively, the battery cell assembly may be housed within the housing by directly securing multiple battery cells to the housing.

[0114] In this embodiment, the battery cell can be a rechargeable battery, which refers to a battery cell that can be recharged after discharge to activate the active materials and continue to be used. The battery cell can be a lithium-ion rechargeable battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc. The battery cell can be cylindrical, flat, cuboid, or other shapes, etc. The battery cell can be packaged in different ways to form cylindrical battery cells, square battery cells, or pouch battery cells, etc.

[0115] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0116] In some embodiments, the energy storage device may include a housing (or cabinet) in which battery clusters are housed.

[0117] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0118] As an example, the thermal management module may include a liquid cooling system (also known as a liquid cooling unit) that provides a heat exchange medium for regulating the temperature of individual battery cells to each battery unit via piping.

[0119] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0120] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module 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.

[0121] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0122] As an example, a power distribution module can be used to distribute power to modules in an energy storage device that require electricity.

[0123] Please see Figure 1 , Figure 2 Some embodiments of this application provide an energy storage device 1, which includes a housing 10, a battery device 20, a thermal management component 30, and a liquid cooling system 40. The housing 10 has a top wall 11 and a bottom wall 12 spaced apart along the direction of gravity, and a side wall 13 connecting the top wall 11 and the bottom wall 12, the side wall 13 having a first opening 131. The battery device 20 is disposed within the housing 10. The thermal management component 30 is disposed within the housing 10 for regulating the temperature of the battery device 20. The liquid cooling system 40 includes a first heat exchange component 41 and a second heat exchange component 42. The second heat exchange component 42 is disposed inside the housing 10 and connected to the thermal management component 30 to form a first circulation loop 40a. The first heat exchange component 41 includes a housing 418, a first heat exchanger 412 and a fan 411. The housing 418 is installed outside the side wall 13 and covers the first opening 131. The first heat exchanger 412 is disposed inside the housing 418 and connected to the second heat exchange component 42 to form a second circulation loop 40b. The fan 411 is connected to the housing 418 and is used to dissipate heat from the first heat exchanger 412.

[0124] It should be noted that the enclosure 10 can also be called a container, battery box, etc. The enclosure 10 is used to provide housing space for components such as the battery device 20 and thermal management components 30. The enclosure 10 can protect the battery device 20, thermal management components 30, etc. housed within it from dust and water, and can reduce the impact of external liquids or other foreign objects on the effectiveness and performance of the battery device 20, thermal management components 30, etc., and can effectively extend the service life of the energy storage device 1.

[0125] The enclosure 10 can adopt various structures. The enclosure 10 can be in various shapes, such as cuboids or cylinders. The enclosure 10 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, or plastic.

[0126] The housing 10 has a top wall 11, a bottom wall 12, and a side wall 13. The top wall 11 and the bottom wall 12 are arranged parallel to each other and spaced apart along the direction of gravity. The bottom wall 12 is used to support components such as the battery device 20 and the thermal management component 30 housed within the housing 10. The side wall 13 connects the top wall 11 and the bottom wall 12, and the side wall 13 refers to the wall portion used for mounting the first heat exchange assembly 41.

[0127] A first opening 131 is provided on the side of the sidewall 13 facing the first heat exchange component 41. The first opening 131 extends through the sidewall 13 to connect the interior and exterior of the housing 10. The shape of the first opening 131 can be flexibly designed, for example, it can be rectangular.

[0128] It should also be noted that the battery device 20 is an energy storage unit capable of converting chemical energy into electrical energy. One or at least two battery devices 20 can be installed inside the housing 10. When at least two battery devices 20 are installed, the multiple battery devices 20 are connected in series via a busbar to increase the voltage of the energy storage device 1. Furthermore, some related descriptions of the battery device 20 can be found above and will not be repeated here.

[0129] It should also be noted that the thermal management component 30 is used to heat or cool the battery device 20 to regulate its temperature. The thermal management component 30 ensures that the battery device 20 is within a suitable temperature range, which promotes better charge and discharge capabilities and higher reliability, and reduces the risk of thermal runaway.

[0130] The thermal management component 30 has flow channels through which a heat exchange medium can flow. The thermal management component 30 primarily regulates the temperature of the battery device 20 by exchanging heat with the battery device 20 via the heat exchange medium. The heat exchange medium can be, but is not limited to, a coolant or refrigerant. The coolant can be, but is not limited to, a mixture of ethylene glycol and water. 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.

[0131] In some embodiments, the thermal management component 30 may be correspondingly disposed and in contact with the battery device 20.

[0132] In some embodiments, the thermal management component 30 may be integrated with the battery device 20 as part of a battery pack, that is, the thermal management component 30 and the corresponding battery device 20 may be housed in the housing 10 in the form of a battery pack.

[0133] The thermal management component 30 can adopt various structures, including but not limited to liquid cooling plates, tubular thermal management components, harmonica tube thermal management components, etc.

[0134] It should also be noted that the liquid cooling system 40 is a functional module connected to all thermal management components 30. The liquid cooling system 40 has multiple components. Some components of the liquid cooling system 40 are installed on the outside of the side wall 13 to form a first heat exchange assembly 41, that is, the portion of the liquid cooling system 40 located outside the side wall 13 forms a modular first heat exchange assembly 41. Another portion of the liquid cooling system 40 is installed inside the housing 10 to form a second heat exchange assembly 42, that is, the portion of the liquid cooling system 40 located inside the housing 10 forms a modular second heat exchange assembly 42.

[0135] The first heat exchange assembly 41 includes a housing 418, a first heat exchanger 412, and a fan 411. The first heat exchanger 412 is housed inside the housing 418 for protection. The fan 411 is embedded in the wall of the housing 418, allowing the first heat exchange assembly 41 to form a modular assembly, facilitating its processing, assembly, storage, and transportation. The housing 418 is mounted on the side wall 13 to ensure a stable installation position and state of the first heat exchange assembly 41 relative to the side wall 13. The housing 418 is correspondingly positioned to the first opening 131, and the housing 418 can close the first opening 131 to improve the protection of components such as the second heat exchange assembly 42 inside the housing 10, thereby improving the reliability and service life of these components. Furthermore, with the first opening 131 of the outer casing 418 not closed, it is convenient to assemble, maintain, and even replace components such as the second heat exchange component 42 inside the housing 10 through the first opening 131. It also facilitates the connection and disassembly of components such as the second heat exchange component 42 inside the housing 10 with the first heat exchange component 41. The outer casing 418 can be installed using methods such as bonding or welding for fixation, or it can be installed using methods such as bolt connection for detachment. The material of the outer casing 418 can be flexibly chosen; for example, it can be made of stainless steel, aluminum alloy, etc.

[0136] It should also be noted that the second heat exchange component 42 can be connected to the thermal management component 30 to form a first circulation loop 40a. Based on this, the liquid cooling system 40 can directly exchange heat with the battery device 20 via the first circulation loop 40a, thereby cooling the battery device 20. In some embodiments, the heat exchange medium flowing in the first circulation loop 40a can be a coolant, that is, the first circulation loop 40a can be a coolant circulation loop. In other embodiments, the heat exchange medium flowing in the first circulation loop 40a can be a refrigerant or other heat exchange medium.

[0137] The first heat exchanger 412 can be connected to the second heat exchange assembly 42 to form a second circulation loop 40b. Based on this, the liquid cooling system 40 can exchange heat with the first circulation loop 40a via the second circulation loop 40b, thereby removing heat from the first circulation loop 40a. This allows the liquid cooling system 40 to sequentially transfer heat through the first circulation loop 40a and the second circulation loop 40b, thus removing heat from the battery device 20. In some embodiments, the heat exchange medium flowing in the second circulation loop 40b can be a refrigerant, i.e., the second circulation loop 40b can be a refrigerant circulation loop. In other embodiments, the heat exchange medium flowing in the second circulation loop 40b can be a coolant or other heat exchange medium.

[0138] Fan 411 is connected to housing 418. In some embodiments, fan 411 is embedded in housing 418 such that, when activated, fan 411 generates airflow along the axial direction L of fan 411, passing through the blades of fan 411 and flowing from inside housing 418 to outside housing 418. The airflow generated by fan 411 can flow through first heat exchanger 412, enabling fan 411 to dissipate heat from first heat exchanger 412. In some embodiments, fan 411 and first heat exchanger 412 are aligned along the axial direction L of fan 411, such that the airflow generated by fan 411 can directly flow through first heat exchanger 412, reliably and effectively dissipating heat from first heat exchanger 412 to the outside of housing 10. Fan 411 may have at least one, such as... Figure 1 As shown, in some embodiments, there are two fans 411.

[0139] In summary, the energy storage device 1 provided in this application embodiment divides the liquid cooling system 40 into a second heat exchange component 42 disposed within the housing 10, and a modular first heat exchange component 41 installed outside the side wall 13 and closing the first opening 131. Based on this, it is convenient for the second heat exchange component 42 to connect with the thermal management component 30 disposed within the housing 10 to form a first circulation loop 40a, and it is convenient for the first heat exchange component 41 to connect and interact with the second heat exchange component 42 through the first opening 131 to form a second circulation loop 40b. As a result, the space originally reserved for the first heat exchange component 41 within the housing 10 can be saved (i.e., space is freed up), thereby facilitating the integration of more battery devices 20 within the housing 10, and improving the capacity and energy density of the energy storage device 1.

[0140] Furthermore, the liquid cooling system 40 can directly exchange heat with the battery device 20 through the first circulation loop 40a formed by the second heat exchange component 42 and the thermal management component 30; the liquid cooling system 40 can also exchange heat with the first circulation loop 40a through the second circulation loop 40b formed by connecting the first heat exchanger 412 of the first heat exchange component 41 and the second heat exchange component 42, thereby removing the heat from the first circulation loop 40a; the liquid cooling system 40 can also dissipate the heat of the first heat exchanger 412 to the outside of the housing 10 through the fan 411 of the first heat exchange component 41. Thus, the liquid cooling system 40 can quickly and reliably cool the battery device 20, improve the thermal management performance of the liquid cooling system 40, facilitate the liquid cooling system 40 to work with the thermal management component 30 to meet the thermal management needs of more battery devices 20, and help improve the reliability and service life of the various components of the energy storage device 1. In particular, since both the fan 411 and the first heat exchanger 412 are installed on the outer side of the side wall 13, the fan 411 and the first heat exchanger 412 can be placed in the same space and both are located on the outer side of the side wall 13. This optimizes the layout between the fan 411 and the first heat exchanger 412, facilitates the airflow generated by the fan 411 to flow over the first heat exchanger 412 over a large area, facilitates direct thermal interaction between the fan 411 and the first heat exchanger 412, optimizes the airflow field of the fan 411, optimizes the heat exchange airflow field between the fan 411 and the first heat exchanger 412, improves the heat dissipation effect and efficiency of the fan 411 on the first heat exchanger 412, and reduces the risk of hot air remaining inside the housing 10 and causing heat radiation to the components inside the housing 10. This improves the heat dissipation performance and thermal management performance of the first heat exchange component 41 and the thermal management performance of the liquid cooling system 40. Furthermore, due to the optimized airflow and improved heat dissipation of fan 411, compared to existing technologies, fan 411 can achieve the same heat dissipation effect at a lower speed. This reduces the starting speed required for fan 411, thereby reducing the noise generated by fan 411 and the noise level of energy storage device 1 during operation, thus improving the performance and user experience of energy storage device 1. Additionally, the larger usable space outside the housing 10 allows for the selection of a larger first heat exchanger 412, which helps optimize the heat exchange performance of the first heat exchanger 412.

[0141] Furthermore, since the first heat exchange component 41 is installed on the outer periphery of the housing 10, in actual site conditions, the first heat exchange component 41 can be placed within the existing installation distance between adjacent housings 10. That is, the existing installation distance between adjacent housings 10 can be used to accommodate the externally mounted first heat exchange component 41 without increasing the existing installation distance between adjacent housings 10 or increasing the floor space of the housing 10. Based on this, when the number of housings 10 installed in the site is fixed, more battery devices 20 can be integrated into the housings 10 to increase the power and energy density of the energy storage device 1, thereby increasing the energy density of the site. Conversely, when the number of battery devices 20 installed in the site is fixed (i.e., the power is fixed), since more battery devices 20 can be integrated into the housings 10, the number of energy storage devices 1 required in the site can be reduced, saving site area and reducing site construction costs.

[0142] Furthermore, the external first heat exchange component 41 can form a modular structure, which facilitates the assembly, maintenance and replacement of the first heat exchange component 41. Since the connection between the first heat exchanger 412 and the second heat exchange component 42 does not require a large opening, it is convenient to carry out dustproof and waterproof protection measures on the first heat exchange component 41 as a whole, which helps to ensure that the dustproof and waterproof performance of the energy storage device 1 meets the requirements.

[0143] Furthermore, when the outer casing 418 is not closed at the first opening 131, it is convenient to assemble, maintain, and even replace components such as the second heat exchange component 42 inside the housing 10 through the first opening 131, and it is also convenient to realize the connection and interaction between the second heat exchange component 42 and the first heat exchange component 41 inside the housing 10. When the outer casing 418 is closed at the first opening 131, the protection performance of the second heat exchange component 42 and other components inside the housing 10 can be improved, thereby helping to improve the reliability and service life of the second heat exchange component 42 and other components inside the housing 10.

[0144] In addition, in some embodiments, the fan 411 can be used in conjunction with a spray mechanism (not shown in the figure). That is, a spray mechanism can be installed around the fan 411 to spray liquid onto the fan 411 via the spray mechanism, thereby quickly cooling the fan 411 and causing the fan 411 to generate a cooler airflow, thereby improving the overall heat dissipation effect of the fan 411 and the spray mechanism.

[0145] Of course, in other embodiments, the liquid cooling system 40 and the thermal management component 30 may form a single loop (e.g., a first loop 40a or a second loop 40b), and the liquid cooling system 40 and the thermal management component 30 may form a multi-stage cooling scheme in which the fan 411 sequentially exchanges heat within the loop. In other embodiments, the liquid cooling system 40 and the thermal management component 30 may form at least three loops, and the liquid cooling system 40 and the thermal management component 30 may form a multi-stage cooling scheme in which the fan 411 sequentially exchanges heat within each loop.

[0146] Of course, in other embodiments, when the fan 411 and the first heat exchanger 412 are aligned along the axial direction L of the fan 411, the first heat exchanger 412 may be located on the inner side of the side wall 13, that is, the first heat exchanger 412 may belong to the second heat exchange assembly 42.

[0147] Please see Figure 1 , Figure 2 In some embodiments of this application, the second heat exchange assembly 42 includes a pumping device 421 and a second heat exchanger 422. The pumping device 421, the second heat exchanger 422, and the thermal management component 30 are connected in sequence, and the thermal management component 30 is connected to the pumping device 421 to form a first circulation loop 40a.

[0148] It should be noted that the pumping device 421 (also known as a water pump) is a component used to transport the heat exchange medium. The second heat exchanger 422 is a component used to exchange heat with the heat exchange medium flowing through it. The second heat exchanger 422 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.

[0149] The pumping device 421, the second heat exchanger 422, and the thermal management component 30 are connected in sequence, and the thermal management component 30 is then reconnected to the pumping device 421. Specifically, the outlet of the pumping device 421 is connected to the inlet of the second heat exchanger 422, the outlet of the second heat exchanger 422 is connected to the inlet of the thermal management component 30, and the outlet of the thermal management component 30 is connected to the inlet of the pumping device 421. The pumping device 421, the second heat exchanger 422, the thermal management component 30, and their connecting loops together form a first circulation loop 40a, in which the heat exchange medium circulates. That is, under the conveying action of the pumping device 421, the heat exchange medium circulates in the first circulation loop 40a, flowing through the pumping device 421, the second heat exchanger 422, the thermal management component 30, and the pumping device 421. In some embodiments, the heat exchange medium flowing in the first circulation loop 40a can be a coolant, i.e., the first circulation loop 40a can be a coolant circulation loop. The connection mentioned above can be a direct connection or an indirect connection via a pipeline.

[0150] By adopting the above scheme, the second heat exchange component 42 can form a first circulation loop 40a together with the thermal management component 30 via the pumping device 421 and the second heat exchanger 422, and the heat exchange medium is driven to circulate along the first circulation loop 40a via the pumping device 421. Based on this, in the first circulation loop 40a, the heat exchange medium can circulate through the thermal management component 30 to directly exchange heat with the battery device 20, thereby cooling the battery device 20; the heat exchange medium after exchanging heat with the battery device 20 can also circulate through the second heat exchanger 422 and exchange heat with the second heat exchanger 422, thereby transferring the heat exchange medium from the battery device 20 to the second heat exchanger 422, thus cooling the heat exchange medium. Therefore, the battery device 20 can be cooled quickly and effectively through the circulating heat exchange medium, providing better heat dissipation for the battery device 20. This improves the heat dissipation and thermal management performance of the second heat exchange component 42 in conjunction with the thermal management component 30, thereby enhancing the reliability and service life of the battery device 20 and the energy storage device 1. Furthermore, it effectively simplifies and optimizes the structure of the second heat exchange component 42 and the liquid cooling system 40, reducing the space occupied by the liquid cooling system 40, especially the second heat exchange component 42.

[0151] Please see Figure 1 , Figure 2 In some embodiments of this application, the second heat exchange assembly 42 further includes a compressor 423 and a throttling device 424. The compressor 423, the first heat exchanger 412, the throttling device 424, and the second heat exchanger 422 are connected in sequence, and the second heat exchanger 422 is connected to the compressor 423 to form a second circulation loop 40b.

[0152] It should be noted that the compressor 423 is a component that provides power for the circulation of the heat exchange medium and is capable of cooling the heat exchange medium. The throttling device 424 is a component used for cooling and pressure reduction; the throttling device 424 can be, but is not limited to, a throttling valve, an expansion valve, etc. The first heat exchanger 412 is a component used for heat exchange with the heat exchange medium flowing through it. The first heat exchanger 412 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.

[0153] The compressor 423, the first heat exchanger 412, the throttling device 424, and the second heat exchanger 422 are connected in sequence, with the second heat exchanger 422 then reconnected to the compressor 423. Specifically, the outlet of the compressor 423 is connected to the inlet of the first heat exchanger 412, the outlet of the first heat exchanger 412 is connected to the inlet of the throttling device 424, the outlet of the throttling device 424 is connected to the inlet of the second heat exchanger 422 (for the flowing heat exchange medium), and the outlet of the second heat exchanger 422 (for the flowing heat exchange medium) is connected to the inlet of the compressor 423. These connections can be direct or indirect, via piping.

[0154] The compressor 423, the first heat exchanger 412, the throttling device 424, the second heat exchanger 422, and their interconnecting loops together form a second circulation loop 40b, in which the heat exchange medium circulates. That is, under the power of the compressor 423, the heat exchange medium circulates in the second circulation loop 40b, flowing through the compressor 423, the first heat exchanger 412, the throttling device 424, the second heat exchanger 422, and the compressor 423. In some embodiments, the heat exchange medium flowing in the second circulation loop 40b can be refrigerant, i.e., the second circulation loop 40b can be a refrigerant circulation loop.

[0155] The second heat exchanger 422 is disposed in both the first circulation loop 40a and the second circulation loop 40b. The second heat exchanger 422 has a first flow channel and a second flow channel inside. The first flow channel participates in forming the first circulation loop 40a and is used to supply the heat exchange medium of the first circulation loop 40a. The second flow channel participates in forming the second circulation loop 40b and is used to supply the heat exchange medium of the second circulation loop 40b. The first and second flow channels are not interconnected to prevent mixing of the heat exchange media in the first and second circulation loops. In the second heat exchanger 422, the heat exchange media in the first and second circulation loops 40a can exchange heat, specifically, the heat of the heat exchange media in the first circulation loop 40a can be transferred to the heat exchange media in the second circulation loop 40b, allowing the second circulation loop 40b to cool the heat exchange media in the first circulation loop 40a within the second heat exchanger 422.

[0156] Based on the above configuration, the liquid cooling system 40 and the thermal management component 30 can form two circulation loops (i.e., the first circulation loop 40a and the second circulation loop 40b). The liquid cooling system 40 and the thermal management component 30 can form a multi-stage cooling scheme in which the first circulation loop 40a, the second circulation loop 40b, and the fan 411 exchange heat sequentially.

[0157] In the first circulation loop 40a, under the delivery of the pumping device 421, the heat exchange medium (e.g., coolant) can circulate along the first circulation loop 40a through the thermal management component 30 and directly exchange heat with the battery device 20, thereby cooling the battery device 20. The coolant after exchanging heat with the battery device 20 can also circulate along the first circulation loop 40a through the second heat exchanger 422 and exchange heat with the heat exchange medium of the second circulation loop 40b in the second heat exchanger 422, thereby realizing the heat exchange of the heat medium in the first circulation loop 40a to the heat exchange medium in the second circulation loop 40b, and achieving the cooling of the heat exchange medium in the first circulation loop 40a.

[0158] In the second circulation loop 40b, under the power of the compressor 423, the heat exchange medium can circulate through the first heat exchanger 412 and exchange heat with the first heat exchanger 412, while the heat exchanged from the first circulation loop 40a is transferred to the first heat exchanger 412, resulting in the initial cooling of the heat exchange medium in the second circulation loop 40b. The heat exchange medium after heat exchange with the first heat exchanger 412 can also circulate through the throttling device 424 in the second circulation loop 40b, allowing the throttling device 424 to cool and depressurize the heat exchange medium. The heat exchange medium after cooling and depressurization by the throttling device 424 can also circulate through the second heat exchanger 422 in the second circulation loop 40b, where it exchanges heat with the heat exchange medium in the first circulation loop 40a.

[0159] For the heat obtained by the first heat exchanger 412 from the heat exchange medium, the fan 411 can be started to generate an airflow that flows through the first heat exchanger 412 and out of the housing 10, thereby dissipating the heat of the first heat exchanger 412 to the outside of the housing 10.

[0160] Thus, the battery device 20 can be effectively and reliably cooled through a multi-stage cooling scheme formed by the combination of the first circulation loop 40a, the second circulation loop 40b, and the fan 411.

[0161] By adopting the above scheme, the liquid cooling system 40 and the thermal management component 30 can be combined via the first circulation loop 40a, the second circulation loop 40b, and the fan 411 to form a multi-stage cooling scheme. In this multi-stage cooling scheme, the heat exchange medium of the second circulation loop 40b and the heat exchange medium of the first circulation loop 40a can exchange heat in the second heat exchanger 422 to achieve heat exchange from the first circulation loop 40a to the second circulation loop 40b, thereby cooling the heat exchange medium of the first circulation loop 40a. This facilitates the cyclical application of the heat exchange medium of the first circulation loop 40a to cool the battery device 20. In this multi-stage cooling scheme, the heat exchange medium in the second circulation loop 40b can circulate along the second circulation loop 40b through the first heat exchanger 412 and exchange heat with the first heat exchanger 412, while the heat exchanged from the first circulation loop 40a is transferred to the first heat exchanger 412, resulting in the initial cooling of the heat exchange medium in the second circulation loop 40b. After heat exchange with the first heat exchanger 412, the heat exchange medium can also circulate along the second circulation loop 40b through the throttling device 424, so that the throttling device 424 can cool and depressurize the heat exchange medium. This facilitates the cyclical application of the heat exchange medium in the second circulation loop 40b to cool the first circulation loop 40a. In this multi-stage cooling scheme, the fan 411 can be started to generate airflow that flows through the first heat exchanger 412 and out of the housing 10, thereby dissipating the heat of the first heat exchanger 412 to the outside of the housing 10. Therefore, the heat of the battery device 20 can be dissipated to the outside of the housing 10 through the first circulation loop 40a, the second circulation loop 40b, and the fan 411 in sequence, thereby improving the heat dissipation performance and thermal management performance of the liquid cooling system 40 and the thermal management component 30 on the battery device 20, and improving the reliability and service life of the battery device 20 and the energy storage device 1.

[0162] Furthermore, based on the configuration of this embodiment, due to the optimization of the heat exchange air field between the fan 411 and the first heat exchanger 412, the operating frequency of the compressor 423 can be reduced accordingly (i.e., the compressor 423 does not need to work continuously and can rest intermittently), which is conducive to extending the service life of the compressor 423 and reducing the power consumption of the energy storage device 1.

[0163] Please see Figure 1 , Figure 2 In some embodiments of this application, the first heat exchange assembly 41 further includes a third heat exchanger 413 disposed within the housing 418. A pumping device 421, the third heat exchanger 413, and a thermal management component 30 are sequentially connected, with the thermal management component 30 connected to the pumping device 421 to form a natural cooling loop 40c. The pumping device 421 is switched between being connected to either the first circulation loop 40a or the natural cooling loop 40c. A fan 411 and the third heat exchanger 413 are aligned along the axial direction L of the fan 411.

[0164] It should be noted that the third heat exchanger 413 is a component used for heat exchange with the heat exchange medium flowing through it. The third heat exchanger 413 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.

[0165] The pumping device 421, the third heat exchanger 413, and the thermal management component 30 are connected in sequence, and the thermal management component 30 is then reconnected to the pumping device 421. Specifically, the outlet of the pumping device 421 is connected to the inlet of the third heat exchanger 413, the outlet of the third heat exchanger 413 is connected to the inlet of the thermal management component 30, and the outlet of the thermal management component 30 is connected to the inlet of the pumping device 421. These connections can be direct or indirect via piping.

[0166] The pumping device 421, the third heat exchanger 413, the thermal management component 30, and the connecting loops therebetween can jointly form a natural cooling circuit 40c. The structure and function of the natural cooling circuit 40c are similar to those of the first circulation circuit 40a, and the heat exchange medium flowing in the natural cooling circuit 40c is the same as that flowing in the first circulation circuit 40a. In some embodiments, the heat exchange medium flowing in the natural cooling circuit 40c and the heat exchange medium flowing in the first circulation circuit 40a can be coolant, that is, the natural cooling circuit 40c and the first circulation circuit 40a can be coolant circulation circuits.

[0167] It should also be noted that, since the first heat exchange component 41 is installed on the outside of the side wall 13, the first heat exchange component 41 includes a third heat exchanger 413, that is, the third heat exchanger 413 is installed on the outside of the side wall 13.

[0168] In this embodiment, both the fan 411 and the third heat exchanger 413 are located on the outer side of the side wall 13. Based on this, the fan 411 and the third heat exchanger 413 can be aligned (i.e., arranged relative to each other) along the axial direction L of the fan 411, so that the fan 411 can generate an airflow that flows through the third heat exchanger 413 and out of the housing 10, thereby dissipating the heat of the third heat exchanger 413 to the outside of the housing 10.

[0169] It should also be noted that the natural cooling circuit 40c and the first circulation circuit 40a share a single pumping device 421. Based on this, the pumping device 421 can be switched between the first circulation circuit 40a and the natural cooling circuit 40c (i.e., the pumping device 421 can be switched to connect to either the first circulation circuit 40a or the natural cooling circuit 40c), allowing the heat exchange medium to circulate selectively in either the first circulation circuit 40a or the natural cooling circuit 40c. In some embodiments, the outlet of the pumping device 421 can be connected to the second heat exchanger 422 and the third heat exchanger 413 respectively via a valve (e.g., a three-way valve), allowing the outlet of the pumping device 421 to be switched to connect to either the second heat exchanger 422 or the third heat exchanger 413, thereby enabling the pumping device 421 to switch between the first circulation circuit 40a and the natural cooling circuit 40c.

[0170] Based on this, under moderate or high ambient temperatures, the pumping device 421 can switch to connect to the first circulation loop 40a, allowing the liquid cooling system 40 and the thermal management component 30 to effectively and reliably cool the battery device 20 through a multi-stage cooling scheme formed by the combination of the first circulation loop 40a, the second circulation loop 40b, and the fan 411. The detailed principle of the multi-stage cooling scheme can be found above and will not be repeated here.

[0171] In low ambient temperatures, the pumping device 421 can switch to the natural cooling circuit 40c, allowing the liquid cooling system 40 and the thermal management component 30 to bypass the second circulation circuit 40b and instead utilize a natural cooling scheme combining the natural cooling circuit 40c and the fan 411 to effectively and reliably cool the battery device 20. Specifically, when the pumping device 421 switches to the natural cooling circuit 40c, the heat exchange medium circulates along the natural cooling circuit 40c through the thermal management component 30 and directly exchanges heat with the battery device 20, thus cooling the battery device 20. After exchanging heat with the battery device 20, the heat exchange medium can also circulate along the natural cooling circuit 40c through the third heat exchanger 413 and exchange heat with it, transferring the heat from the battery device 20 to the third heat exchanger 413, thereby cooling the heat exchange medium. For the heat obtained by the third heat exchanger 413 from the heat exchange medium, the fan 411 can be started and take advantage of the low ambient temperature to generate cold air (airflow) to quickly and effectively remove the heat from the third heat exchanger 413 (i.e., heat dissipation).

[0172] By adopting the above scheme, a natural cooling circuit 40c can be added between the liquid cooling system 40 and the thermal management component 30. Based on this, under moderate or high ambient temperatures, the pumping device 421 can be switched to connect to the first circulation circuit 40a, allowing the liquid cooling system 40 and the thermal management component 30 to cool the battery device 20 normally and effectively through a multi-stage cooling scheme formed by the combination of the first circulation circuit 40a, the second circulation circuit 40b, and the fan 411. Under low ambient temperatures, the pumping device 421 can be switched to connect to the natural cooling circuit 40c, allowing the liquid cooling system 40 and the thermal management component 30 to bypass the second circulation circuit 40b and instead rely on a natural cooling scheme combining the natural cooling circuit 40c and the fan 411 to effectively and reliably cool the battery device 20. In the natural cooling scheme, the fan 411 can utilize the low ambient temperature to generate cool air (airflow), which quickly and effectively removes heat from the third heat exchanger 413, thereby improving the heat dissipation and thermal management performance of the liquid cooling system 40 and thermal management components 30 on the battery device 20. Furthermore, by implementing the natural cooling scheme in low ambient temperatures, the second circulation loop 40b can be skipped, eliminating the need for components such as the compressor 423 and throttling device 424 that operate the second circulation loop 40b. This reduces the operating time of the compressor 423 and throttling device 424, lowers power consumption, and helps extend the service life of the compressor 423 and throttling device 424, ultimately saving on the operating costs of the energy storage device 1.

[0173] Furthermore, the placement of the third heat exchanger 413 within the first heat exchange assembly 41 allows the fan 411 and the third heat exchanger 413 to be located in the same space and both on the outer side of the side wall 13, optimizing their layout. Based on this, on the one hand, it facilitates the large-area flow of cold air generated by the fan 411 through the third heat exchanger 413, thereby optimizing the heat exchange airflow between the fan 411 and the third heat exchanger 413 and improving the heat dissipation effect and efficiency of the fan 411 on the third heat exchanger 413. On the other hand, the large usable space outside the housing 10 allows for the selection of a larger model of the third heat exchanger 413, thus optimizing its heat exchange performance. Finally, since the connection between the pumping device 421 and the third heat exchanger 413 does not require a large opening, it facilitates dustproof and waterproof protection measures for the entire first heat exchange assembly 41, ensuring that the dustproof and waterproof performance of the energy storage device 1 meets requirements.

[0174] Please see Figure 1 , Figure 3 , Figure 4 In some embodiments of this application, the fan 411 is located within the enclosed area of ​​the third heat exchanger 413.

[0175] It should be noted that, based on the alignment of the fan 411 and the third heat exchanger 413 along the axial direction L of the fan 411, the fan 411 can be disposed within the enclosing area of ​​the third heat exchanger 413. In some embodiments, the third heat exchanger 413 is recessed towards the side closest to the first opening 131, and the fan 411 can be disposed within the recessed area of ​​the third heat exchanger 413 facing away from the first opening 131, thereby achieving placement within the enclosing area of ​​the third heat exchanger 413.

[0176] By adopting the above scheme, when the first heat exchange component 41 includes a fan 411 and a third heat exchanger 413, by placing the fan 411 in the enclosed area of ​​the third heat exchanger 413, the airflow generated by the fan 411 flowing out of the housing 10 can form a "through wind" passing through the third heat exchanger 413. This facilitates the airflow generated by the fan 411 passing through the third heat exchanger 413 and carrying away the heat of the third heat exchanger 413, thereby improving the heat dissipation effect of the fan 411 on the third heat exchanger 413.

[0177] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, the third heat exchanger 413 includes a first collector 4131, a plurality of first tubes 4132, and a second collector 4133, wherein the flow channels of the plurality of first tubes 4132 are connected in parallel between the flow channels of the first collector 4131 and the flow channels of the second collector 4133.

[0178] It should be noted that the first collector 4131, the first tube 4132, and the second collector 4133 each have internal flow channels through which the heat exchange medium can flow. Specifically, the first collector 4131 has one component that can also function as a confluence component, the second collector 4133 has one component that can also function as a confluence component, and the first tube 4132 has multiple components that can also function as flow diversion components. Multiple first tubes 4132 are connected in parallel between the first collector 4131 and the second collector 4133, such that the flow channels of the multiple first tubes 4132 are connected in parallel between the flow channels of the first collector 4131 and the flow channels of the second collector 4133. This allows the heat exchange medium to be diverted from one of the first collector 4131 and the second collector 4133 to the multiple first tubes 4132, and then merge back into the other of the first collector 4131 and the second collector 4133.

[0179] The shapes and sizes of the first current collector 4131, the first tube 4132, and the second current collector 4133 can be configured as needed. In some embodiments, the first current collector 4131 and the second current collector 4133 are circular tubes, so that the first current collector 4131 and the second current collector 4133 have better pressure resistance and facilitate the convergence of the heat exchange medium. In some embodiments, the first tube 4132 may be (but is not limited to) a flat tube, so that the first tube 4132 has a flat and large heat exchange area, which facilitates the airflow generated by the fan 411 to quickly and reliably remove the heat of the heat exchange medium flowing in the first tube 4132. In some embodiments, the first tube 4132 is bent toward the side near the first opening 131, such that the first tube 4132 is C-shaped or U-shaped and is bent between the first collector 4131 and the second collector 4133. Based on this, the extension length of the first tube 4132 can be extended, and the surface area and heat exchange area of ​​the first tube 4132 can be increased, thereby facilitating the airflow generated by the fan 411 to quickly and reliably remove the heat of the heat exchange medium flowing in the first tube 4132.

[0180] By adopting the above scheme, the heat exchange medium flowing in the third heat exchanger 413 can flow into one of the channels of the first collector 4131 and the second collector 4133, then flow into the channels of multiple first tubes 4132, and then flow into the other channel of the first collector 4131 and the second collector 4133. Based on this, the structure of the third heat exchanger 413 can be optimized, facilitating the flow of the heat exchange medium in the third heat exchanger 413 and increasing the heat exchange area between the third heat exchanger 413 and the fan 411, thereby optimizing the heat exchange effect of the fan 411 on the third heat exchanger 413.

[0181] Of course, in other embodiments, the third heat exchanger 413 may employ other structural designs.

[0182] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, a portion of the first tube body 4132 together forms a first tube group 4134, and another portion of the first tube body 4132 together forms a second tube group 4135. The first tube group 4134 is connected between one end of the first collector 4131 and one end of the second collector 4133, and the second tube group 4135 is connected between the other end of the first collector 4131 and the other end of the second collector 4133.

[0183] It should be noted that a portion of the multiple first tubes 4132 forms a first tube group 4134, while another portion forms a second tube group 4135. The first tube group 4134 and the second tube group 4135 are spaced apart at both ends of the first collector 4131, that is, the first tube group 4134 and the second tube group 4135 are spaced apart at both ends of the second collector 4133. In other words, the first collector 4131, the first tube group 4134, the second collector 4133, and the second tube group 4135 are connected sequentially, and the end of the second tube group 4135 away from the second collector 4133 is then connected to the end of the first collector 4131 away from the first tube group 4134, making the third heat exchanger 413 shaped like a quadrilateral ring.

[0184] The first tube group 4134 includes one or more first tube bodies 4132, and the second tube group 4135 includes one or more first tube bodies 4132. The number of first tube bodies 4132 included in the first tube group 4134 may be the same as or different from the number of first tube bodies 4132 included in the second tube group 4135.

[0185] The first tube body 4132 of the first tube group 4134 and the first tube body 4132 of the second tube group 4135 are both connected between the first current collector 4131 and the second current collector 4133. In some embodiments, the flow direction of the heat exchange medium in the first tube body 4132 of the first tube group 4134 may be the same as the flow direction of the heat exchange medium in the first tube body 4132 of the second tube group 4135; that is, the heat exchange medium may flow into one of the first collector 4131 and the second collector 4133, then be diverted to the first tube body 4132 of the first tube group 4134 and the second tube group 4135 and flow in the same direction, and then converge into the other of the first collector 4131 and the second collector 4133 and flow out; that is, the first tube body 4132 of the first tube group 4134 and the second tube group 4135 are both used to allow the heat exchange medium to flow from the first collector 4131 to the second collector 4133, or both are used to allow the heat exchange medium to flow from the second collector 4133 to the first collector 4131.

[0186] In other embodiments, the flow direction of the heat exchange medium in the first tube body 4132 of the first tube group 4134 may be opposite to the flow direction of the heat exchange medium in the first tube body 4132 of the second tube group 4135. For example, the heat exchange medium may flow into the first collector 4131, then be distributed to each of the first tube bodies 4132 of the first tube group 4134, then be collected into the second collector 4133, then be distributed to each of the first tube bodies 4132 of the second tube group 4135, and then be collected into the first collector 4131. That is, each of the first tube bodies 4132 of the first tube group 4134 is used to supply the heat exchange medium from the first collector 4131 to the second collector 4133, and each of the first tube bodies 4132 of the second tube group 4135 is used to supply the heat exchange medium from the second collector 4133 to the first collector 4131.

[0187] By adopting the above scheme, by dividing multiple first tube bodies 4132 into first tube groups 4134 and second tube groups 4135, and by distributing the first tube groups 4134 and second tube groups 4135 at intervals at both ends of the first collector 4131, the third heat exchanger 413 can form a near-quadrilateral annular shape. Based on this, regardless of whether the "flow direction of the heat exchange medium in the first tube body 4132 of the first tube group 4134" is the same as the "flow direction of the heat exchange medium in the first tube body 4132 of the second tube group 4135", the third heat exchanger 413 can form a large heat exchange area based on the first collector 4131, the first tube group 4134, the second collector 4133, and the second tube group 4135. This optimizes the structure of the third heat exchanger 413, facilitates increasing the heat exchange area between the third heat exchanger 413 and the fan 411, and helps optimize the heat exchange effect of the fan 411 on the third heat exchanger 413.

[0188] Of course, in other embodiments, the positions of the plurality of first tubes 4132 between the first collector 4131 and the second collector 4133 can be arranged as needed. For example, the plurality of first tubes 4132 can be located in the middle of the two ends of the first collector 4131, etc.

[0189] Please refer to the figures. In some embodiments of this application, the first heat exchanger 412 is located on the side of the third heat exchanger 413 away from the fan 411.

[0190] It should be noted that when the first heat exchanger 412, the third heat exchanger 413 and the fan 411 are all located outside the side wall 13, that is, when the first heat exchange assembly 41 includes the first heat exchanger 412, the third heat exchanger 413 and the fan 411, the fan 411 is located within the enclosed area of ​​the first heat exchanger 412 and within the enclosed area of ​​the third heat exchanger 413. The first heat exchanger 412 may be located on the side of the third heat exchanger 413 away from the fan 411, that is, the third heat exchanger 413 is located on the side of the first heat exchanger 412 closer to the fan 411.

[0191] By adopting the above scheme, when the first heat exchange assembly 41 includes a first heat exchanger 412, a third heat exchanger 413, and a fan 411, the third heat exchanger 413 can be positioned closer to the fan 411 than the first heat exchanger 412. Based on this, when the ambient temperature is low and the pumping device 421 switches to the natural cooling circuit 40c, the cold air (airflow) generated by the fan 411 can more quickly and directly remove the heat from the third heat exchanger 413, thereby improving the heat dissipation effect and efficiency of the fan 411 on the third heat exchanger 413 and reducing the high requirements on the heat exchange capacity of the third heat exchanger 413.

[0192] In some embodiments, the third collector 4121 of the first heat exchanger 412 and the first collector 4131 of the third heat exchanger 413 are jointly mounted and supported by the first support frame 70. In some embodiments, the fourth collector 4123 of the first heat exchanger 412 and the second collector 4133 of the third heat exchanger 413 are jointly mounted and supported by the second support frame 80.

[0193] Of course, in other embodiments, where the first heat exchange assembly 41 includes a first heat exchanger 412, a third heat exchanger 413 and a fan 411, the first heat exchanger 412 may be disposed on the side of the third heat exchanger 413 near the fan 411.

[0194] Please see Figure 1 , Figure 3 , Figure 4 In some embodiments of this application, the fan 411 is located within the enclosed area of ​​the first heat exchanger 412.

[0195] It should be noted that, based on the alignment of the fan 411 and the first heat exchanger 412 along the axial direction L of the fan 411, the fan 411 can be disposed within the enclosing area of ​​the first heat exchanger 412. In some embodiments, the first heat exchanger 412 is recessed towards the side closest to the first opening 131, and the fan 411 can be disposed within the recessed area of ​​the first heat exchanger 412 facing away from the first opening 131, thereby achieving placement within the enclosing area of ​​the first heat exchanger 412.

[0196] By adopting the above scheme, when the first heat exchange component 41 includes a fan 411 and a first heat exchanger 412, by placing the fan 411 in the enclosed area of ​​the first heat exchanger 412, the airflow generated by the fan 411 flowing out of the housing 10 can form a "through wind" passing through the first heat exchanger 412. This facilitates the airflow generated by the fan 411 passing through the first heat exchanger 412 and carrying away the heat of the first heat exchanger 412, thereby improving the heat dissipation effect of the fan 411 on the first heat exchanger 412.

[0197] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, the first heat exchanger 412 includes a third collector 4121, a plurality of second tubes 4122, and a fourth collector 4123, with the flow channels of the plurality of second tubes 4122 connected in parallel between the flow channels of the third collector 4121 and the flow channels of the fourth collector 4123.

[0198] It should be noted that the third collector 4121, the second tube 4122, and the fourth collector 4123 each have internal flow channels through which the heat exchange medium can flow. Specifically, the third collector 4121 has one flow channel that can also function as a confluence component, the fourth collector 4123 has one flow channel that can also function as a confluence component, and the second tube 4122 has multiple flow channels that can also function as flow diversion components. These multiple second tubes 4122 are connected in parallel between the third collector 4121 and the fourth collector 4123, such that the flow channels of the multiple second tubes 4122 are connected in parallel between the flow channels of the third collector 4121 and the flow channels of the fourth collector 4123. This allows the heat exchange medium to be diverted from one of the third collector 4121 and the fourth collector 4123 to the multiple second tubes 4122, and then back into the other of the three flow channels.

[0199] The shapes and sizes of the third current collector 4121, the second tube 4122, and the fourth current collector 4123 can be configured as needed. In some embodiments, the third current collector 4121 and the fourth current collector 4123 are circular tubes, so that the third current collector 4121 and the fourth current collector 4123 have better pressure resistance and facilitate the convergence of the heat exchange medium in the third current collector 4121 and the fourth current collector 4123. In some embodiments, the second tube 4122 may be (but is not limited to) a flat tube, so that the second tube 4122 has a flat and large heat exchange area, which facilitates the airflow generated by the fan 411 to quickly and reliably remove the heat of the heat exchange medium flowing in the second tube 4122. In some embodiments, the second tube 4122 is bent toward the side near the first opening 131, such that the second tube 4122 is C-shaped or U-shaped and bent between the third collector 4121 and the fourth collector 4123. Based on this, the extension length of the second tube 4122 can be extended, and the surface area and heat exchange area of ​​the second tube 4122 can be increased, thereby facilitating the airflow generated by the fan 411 to quickly and reliably remove the heat of the heat exchange medium flowing in the second tube 4122.

[0200] By adopting the above scheme, the heat exchange medium flowing in the first heat exchanger 412 can flow into one of the channels of the third collector 4121 and the fourth collector 4123, then flow into the channels of the multiple second tubes 4122, and then flow into the other channel of the third collector 4121 and the fourth collector 4123. Based on this, the structure of the first heat exchanger 412 can be optimized, which facilitates the flow of the heat exchange medium in the first heat exchanger 412 and makes it easier to increase the heat exchange area between the first heat exchanger 412 and the fan 411, thereby improving the heat exchange effect of the fan 411 on the first heat exchanger 412.

[0201] Of course, in other embodiments, the first heat exchanger 412 may adopt other structural designs.

[0202] Please see Figure 4 , Figure 5 , Figure 6 In some embodiments of this application, a portion of the second tube 4122 together form a third tube group 4124, and another portion of the second tube 4122 together form a fourth tube group 4125. The third tube group 4124 is connected between one end of the third current collector 4121 and one end of the fourth current collector 4123, and the fourth tube group 4125 is connected between the other end of the third current collector 4121 and the other end of the fourth current collector 4123.

[0203] It should be noted that a portion of the multiple second tubes 4122 forms the third tube group 4124, while another portion forms the fourth tube group 4125. The third tube group 4124 and the fourth tube group 4125 are spaced apart at both ends of the third collector 4121, that is, the third tube group 4124 and the fourth tube group 4125 are spaced apart at both ends of the fourth collector 4123. In other words, the third collector 4121, the third tube group 4124, the fourth collector 4123, and the fourth tube group 4125 are connected sequentially, and the end of the fourth tube group 4125 away from the fourth collector 4123 is then connected to the end of the third collector 4121 away from the third tube group 4124, making the first heat exchanger 412 shaped like a quadrilateral ring.

[0204] The third tube group 4124 includes one or more second tube bodies 4122, and the fourth tube group 4125 includes one or more second tube bodies 4122. The number of second tube bodies 4122 included in the third tube group 4124 may be the same as or different from the number of second tube bodies 4122 included in the fourth tube group 4125.

[0205] The second tube body 4122 of the third tube group 4124 and the second tube body 4122 of the fourth tube group 4125 are both connected between the third current collector 4121 and the fourth current collector 4123. In some embodiments, the flow direction of the heat exchange medium in the second tube body 4122 of the third tube group 4124 may be the same as the flow direction of the heat exchange medium in the second tube body 4122 of the fourth tube group 4125; that is, the heat exchange medium may flow into one of the third collector 4121 and the fourth collector 4123, then be diverted to the second tube body 4122 of both the third tube group 4124 and the fourth tube group 4125 and flow in the same direction, and then converge into the other of the third collector 4121 and the fourth collector 4123 and flow out; that is, the second tube body 4122 of both the third tube group 4124 and the fourth tube group 4125 is used to supply the heat exchange medium from the third collector 4121 to the fourth collector 4123, or both are used to supply the heat exchange medium from the fourth collector 4123 to the third collector 4121.

[0206] In other embodiments, the flow direction of the heat exchange medium in the second tube 4122 of the third tube group 4124 may be opposite to the flow direction of the heat exchange medium in the second tube 4122 of the fourth tube group 4125. For example, the heat exchange medium may flow into the third collector 4121, then be distributed to each of the second tubes 4122 of the third tube group 4124, then be collected into the fourth collector 4123, then be distributed to each of the second tubes 4122 of the fourth tube group 4125, and then be collected into the third collector 4121. That is, each of the second tubes 4122 of the third tube group 4124 is used to supply the heat exchange medium from the third collector 4121 to the fourth collector 4123, and each of the second tubes 4122 of the fourth tube group 4125 is used to supply the heat exchange medium from the fourth collector 4123 to the third collector 4121.

[0207] By adopting the above scheme, by dividing multiple second tube bodies 4122 into third tube groups 4124 and fourth tube groups 4125, and by distributing the third tube groups 4124 and fourth tube groups 4125 at intervals at both ends of the third collector 4121, the first heat exchanger 412 can form a near-quadrilateral annular shape. Based on this, regardless of whether the "flow direction of the heat exchange medium in the second tube body 4122 of the third tube group 4124" is the same as the "flow direction of the heat exchange medium in the second tube body 4122 of the fourth tube group 4125", the first heat exchanger 412 can form a large heat exchange area based on the third collector 4121, the third tube group 4124, the fourth collector 4123, and the fourth tube group 4125. This optimizes the structure of the first heat exchanger 412, facilitates increasing the heat exchange area between the first heat exchanger 412 and the fan 411, and helps optimize the heat exchange effect of the fan 411 on the first heat exchanger 412.

[0208] Of course, in other embodiments, the positions of the plurality of second tubes 4122 between the third collector 4121 and the fourth collector 4123 can be arranged as needed. For example, the plurality of second tubes 4122 can be located in the middle of the two ends of the third collector 4121, etc.

[0209] Please see Figure 1 , Figure 2 In some embodiments of this application, the second heat exchange component 42 has a first interface 425 and a second interface 426 on the side facing the first heat exchange component 41. The outer casing 418 has a third interface 414 and a fourth interface 415 on the side facing the second heat exchange component 42. The first interface 425 and the third interface 414 are detachably connected via a first pipe 43, and the second interface 426 and the fourth interface 415 are detachably connected via a second pipe 44. The first interface 425, the second interface 426, the third interface 414, and the fourth interface 415 are all located in the second circulation loop 40b.

[0210] It should be noted that this embodiment applies to related embodiments where "the liquid cooling system 40 is provided with a second circulation loop 40b".

[0211] The second heat exchange component 42 has a first interface 425 on the side facing the first heat exchange component 41. Correspondingly, the outer casing 418 of the first heat exchange component 41 has a third interface 414 on the side facing the second heat exchange component 42. The first interface 425 and the third interface 414 can be connected by a first pipe 43 to connect the area of ​​the second circulation loop 40b corresponding to the area between the first interface 425 and the third interface 414. When the first pipe 43 is disconnected from the area between the first interface 425 and the third interface 414, the first interface 425 can automatically seal, and the third interface 414 can automatically seal, thus disconnecting the area of ​​the second circulation loop 40b corresponding to the area between the first interface 425 and the third interface 414. That is, the first interface 425 and the third interface 414 can automatically connect to each other when connected to the first pipe 43, and can automatically seal themselves when not connected to the first pipe 43. For example, as... Figure 2 As shown, in some embodiments, one end of the first interface 425 is connected to the outlet of the compressor 423, and one end of the third interface 414 is connected to the inlet of the first heat exchanger 412. The first interface 425 and the third interface 414 can be connected by a first pipe 43 to enable the outlet of the compressor 423 to communicate with the inlet of the first heat exchanger 412. When the first pipe 43 is detached between the first interface 425 and the third interface 414, the first interface 425 can be automatically sealed, and the third interface 414 can be automatically sealed.

[0212] Similarly, the second heat exchange component 42 has a second interface 426 on the side facing the first heat exchange component 41. Correspondingly, the outer casing 418 of the first heat exchange component 41 has a fourth interface 415 on the side facing the second heat exchange component 42. The second interface 426 and the fourth interface 415 can be connected by a second pipe 44 to facilitate communication in the area of ​​the second circulation loop 40b corresponding to the second interface 426 and the fourth interface 415. When the second pipe 44 is disconnected from the second interface 426 and the fourth interface 415, the second interface 426 can automatically seal, and the fourth interface 415 can automatically seal, thus disconnecting the area of ​​the second circulation loop 40b corresponding to the second interface 426 and the fourth interface 415. That is, the second interface 426 and the fourth interface 415 can automatically connect to each other when connected to the second pipe 44, and can automatically seal themselves when not connected to the second pipe 44. For example, as... Figure 2 As shown, in some embodiments, one end of the second interface 426 is connected to the inlet of the throttling device 424, and one end of the fourth interface 415 is connected to the outlet of the first heat exchanger 412. The second interface 426 and the fourth interface 415 can be connected by a second pipe 44 to enable the outlet of the first heat exchanger 412 to communicate with the inlet of the throttling device 424. When the second pipe 44 is disassembled between the second interface 426 and the fourth interface 415, the second interface 426 can be automatically sealed, and the fourth interface 415 can be automatically sealed.

[0213] Based on this, it is convenient to transport, maintain and replace the first heat exchange component 41 and the second heat exchange component 42 respectively, and it is also convenient to connect and interact between the first heat exchange component 41 and the second heat exchange component 42, and the risk of refrigerant leakage during transportation, maintenance, replacement and connection and interaction can be reduced.

[0214] Among them, the first interface 425, the second interface 426, the third interface 414, and the fourth interface 415 can be, but are not limited to, quick-connect connectors, direct cooling connectors, etc.

[0215] The first interface 425 and the second interface 426 can be located at any position (e.g., the middle) on the side of the second heat exchange component 42 facing the first heat exchange component 41, and the third interface 414 and the fourth interface 415 can be located at any position (e.g., the middle) on the side of the outer shell 418 of the first heat exchange component 41 facing the second heat exchange component 42. The interfaces between the second heat exchange component 42 and the first heat exchange component 41 can be arranged based on the consideration of "proximity".

[0216] By adopting the above scheme, when the first pipe 43 is disassembled between the first interface 425 and the third interface 414, and the second pipe 44 is disassembled between the second interface 426 and the fourth interface 415, the first interface 425, the second interface 426, the third interface 414, and the fourth interface 415 can be automatically sealed to seal the heat exchange medium in the two parts of the second circulation loop 40b (i.e., the part of the second circulation loop 40b that is in the first heat exchange component 41, and the part of the second circulation loop 40b that is in the second heat exchange component 42), thereby reducing the risk of heat exchange medium leakage and facilitating the transportation, maintenance, and replacement of the first heat exchange component 41 and the second heat exchange component 42 respectively.

[0217] Conversely, by connecting a first pipe 43 between the first interface 425 and the third interface 414, the area corresponding to the second circulation loop 40b between the first interface 425 and the third interface 414 can be connected; similarly, by connecting a second pipe 44 between the second interface 426 and the fourth interface 415, the area corresponding to the second circulation loop 40b between the second interface 426 and the fourth interface 415 can be connected. Based on this, it is convenient to achieve connection and interaction between the first heat exchange component 41 and the second heat exchange component 42, and it is convenient to form a second circulation loop 40b between the first heat exchange component 41 and the second heat exchange component 42.

[0218] In addition, in some embodiments, the second heat exchange component 42 facing the first heat exchange component 41 and the first heat exchange component 41 facing the second heat exchange component 42 may be respectively provided with interfaces for signal interaction.

[0219] Please see Figure 1 , Figure 2 In some embodiments of this application, at least one of the first interface 425, the second interface 426, the third interface 414, and the fourth interface 415 is a quick-connect connector.

[0220] By adopting the above solution, the sealing performance of at least one of the first interface 425, the second interface 426, the third interface 414 and the fourth interface 415 can be improved when no pipeline is connected, and the connection convenience and connection reliability of at least one of the first interface 425, the second interface 426, the third interface 414 and the fourth interface 415 can be improved when a pipeline is connected.

[0221] Please see Figure 1 , Figure 2In some embodiments of this application, the second heat exchange component 42 has a fifth interface 427 and a sixth interface 428 on the side facing the first heat exchange component 41. The outer casing 418 has a seventh interface 416 and an eighth interface 417 on the side facing the second heat exchange component 42. The fifth interface 427 and the seventh interface 416 are detachably connected via a third pipe 45, and the sixth interface 428 and the eighth interface 417 are detachably connected via a fourth pipe 46. The fifth interface 427, the sixth interface 428, the seventh interface 416, and the eighth interface 417 are all located in the natural cooling circuit 40c.

[0222] It should be noted that this embodiment applies to related embodiments where "the liquid cooling system 40 is provided with a natural cooling circuit 40c".

[0223] The second heat exchange component 42 has a fifth interface 427 on the side facing the first heat exchange component 41. Correspondingly, the outer casing 418 of the first heat exchange component 41 has a seventh interface 416 on the side facing the second heat exchange component 42. The fifth interface 427 and the seventh interface 416 can be connected by a third pipe 45 to connect the area of ​​the natural cooling circuit 40c corresponding to the area between the fifth interface 427 and the seventh interface 416. When the third pipe 45 is disconnected from the area between the fifth interface 427 and the seventh interface 416, the fifth interface 427 can automatically seal, and the seventh interface 416 can automatically seal, thus disconnecting the area of ​​the natural cooling circuit 40c corresponding to the area between the fifth interface 427 and the seventh interface 416. That is, the fifth interface 427 and the seventh interface 416 can automatically connect to each other when connected to the third pipe 45, and can automatically seal themselves when not connected to the third pipe 45. For example, as... Figure 2 As shown, in some embodiments, the fifth port 427 is connected to the outlet of the pumping device 421, and the seventh port 416 is connected to the inlet of the third heat exchanger 413. The fifth port 427 and the seventh port 416 can be connected by a third pipe 45 to enable communication between the outlet of the pumping device 421 and the inlet of the third heat exchanger 413. When the third pipe 45 is disconnected between the fifth port 427 and the seventh port 416, the fifth port 427 can be automatically sealed, and the seventh port 416 can be automatically sealed.

[0224] Similarly, the second heat exchange component 42 has a sixth interface 428 on the side facing the first heat exchange component 41. Correspondingly, the first heat exchange component 41 has an eighth interface 417 on the side facing the second heat exchange component 42. The sixth interface 428 and the eighth interface 417 can be connected by a fourth pipe 46 to connect the area of ​​the natural cooling circuit 40c corresponding to the area between the sixth interface 428 and the eighth interface 417. When the fourth pipe 46 is disconnected from the area between the sixth interface 428 and the eighth interface 417, the sixth interface 428 can automatically seal, and the eighth interface 417 can automatically seal, thus disconnecting the area of ​​the natural cooling circuit 40c corresponding to the area between the sixth interface 428 and the eighth interface 417. That is, the sixth interface 428 and the eighth interface 417 can automatically connect to each other when connected to the fourth pipe 46, and can automatically seal themselves when not connected to the fourth pipe 46. For example, as Figure 2 As shown, in some embodiments, the sixth port 428 is connected to the inlet of the pumping device 421, and the eighth port 417 is connected to the outlet of the third heat exchanger 413. The sixth port 428 and the eighth port 417 can be connected by a fourth pipe 46 to enable the outlet of the third heat exchanger 413 to communicate with the inlet of the pumping device 421. When the fourth pipe 46 is disconnected between the sixth port 428 and the eighth port 417, the sixth port 428 can be automatically sealed, and the eighth port 417 can be automatically sealed.

[0225] Among them, the fifth interface 427, the sixth interface 428, the seventh interface 416, and the eighth interface 417 can be, but are not limited to, quick-connect connectors, direct cooling connectors, etc.

[0226] The fifth interface 427 and the sixth interface 428 can be located at any position (e.g., in the middle) on the side of the second heat exchange component 42 facing the first heat exchange component 41, and the seventh interface 416 and the eighth interface 417 can be located at any position (e.g., in the middle) on the side of the first heat exchange component 41 facing the second heat exchange component 42. The interfaces between the second heat exchange component 42 and the first heat exchange component 41 can be arranged based on the consideration of "proximity".

[0227] By adopting the above scheme, when the third pipe 45 is disassembled between the fifth interface 427 and the seventh interface 416, and the fourth pipe 46 is disassembled between the sixth interface 428 and the eighth interface 417, the fifth interface 427, the sixth interface 428, the seventh interface 416, and the eighth interface 417 can be automatically sealed to encapsulate the heat exchange medium in the two parts of the natural cooling circuit 40c (i.e., the part of the natural cooling circuit 40c located in the first heat exchange assembly 41, and the part of the natural cooling circuit 40c located in the second heat exchange assembly 42), thereby reducing the risk of heat exchange medium leakage. Based on this, the first heat exchange assembly 41 and the second heat exchange assembly 42, which are equipped with the natural cooling circuit 40c, can be modularized for separate transportation, maintenance, and replacement.

[0228] Conversely, a third pipe 45 can be connected between the fifth interface 427 and the seventh interface 416 to facilitate the connection of the natural cooling loop 40c between the areas corresponding to the fifth interface 427 and the seventh interface 416; a fourth pipe 46 can be connected between the sixth interface 428 and the eighth interface 417 to facilitate the connection of the natural cooling loop 40c between the areas corresponding to the sixth interface 428 and the eighth interface 417. Based on this, it is convenient to achieve connection and interaction between the first heat exchange component 41 and the second heat exchange component 42, and it is convenient to form a natural cooling loop 40c between the first heat exchange component 41 and the second heat exchange component 42.

[0229] Please see Figure 1 , Figure 2 In some embodiments of this application, the second heat exchange assembly 42 further includes an electric heating element 429, which is disposed on the first circulation loop 40a.

[0230] It should be noted that the electric heating element 429 is a component used to electrically heat the heat exchange medium (e.g., coolant). The electric heating element 429 may be, but is not limited to, a heating wire (e.g., nickel-chromium wire, iron-chromium-aluminum wire, etc.), a PTC heating element (Positive Temperature Coefficient Thermistor), etc.

[0231] The electric heating element 429 is installed on the first circulation loop 40a. For example... Figure 2 As shown, in some embodiments, the electric heating element 429 is connected in series between the outlet of the pumping device 421 and the inlet of the second heat exchanger 422. Of course, in other embodiments, the electric heating element 429 can be connected in series at any position in the first circulation loop 40a, or the electric heating element 429 can be connected in parallel with the second heat exchanger 422.

[0232] By adopting the above scheme, an electric heating element 429 can be configured on the first circulation loop 40a, so that the first circulation loop 40a has a cooling mode when the electric heating element 429 is not activated, and a heating mode when the electric heating element 429 is activated. Based on this, when the temperature of the battery device 20 is lower than the suitable operating temperature, the heat exchange medium can be heated through the heating mode of the first circulation loop 40a, that is, through the activated electric heating element 429. This causes the heat exchange medium to flow through the thermal management component 30 and provide heat to the battery device 20, thereby heating the battery device 20 and raising its temperature to the suitable operating temperature. As a result, the thermal management performance of the liquid cooling system 40 can be optimized.

[0233] Of course, in other embodiments, the electric heating element 429 may be disposed on one side (near) of the second heat exchanger 422, so that the electric heating element 429 can provide heat to the heat exchange medium flowing in the second heat exchanger 422 when it is started.

[0234] Furthermore, in some embodiments, the liquid cooling system 40 may be equipped with pressure sensors in any loop as needed for real-time pressure monitoring, so as to trigger an alarm or shutdown in the event of abnormal pressure. In some embodiments, the liquid cooling system 40 may be equipped with temperature sensors in any loop as needed for real-time temperature monitoring.

[0235] Please see Figure 1 , Figure 7 , Figure 8 In some embodiments of this application, the housing 418 is detachably mounted on the side wall 13.

[0236] It should be noted that, in the finished state of the energy storage device 1, the outer casing 418 is detachably installed on the side wall 13 and closes the first opening 131. The outer casing 418 can be detachably installed on the side wall 13 by means of bolt connection or other detachable installation methods.

[0237] By adopting the above solution, the modular first heat exchange component 41 can be conveniently, quickly, and reliably installed on the outside of the side wall 13 by detachably mounting the outer shell 418 to the side wall 13. This also facilitates the reliable closure of the first opening 131 by the first heat exchange component 41, thereby improving the protection performance of components such as the second heat exchange component 42 inside the housing 10. Furthermore, when the outer shell 418 is detached from the housing 10, the first heat exchange component 41 can be assembled, transported, stored, and maintained as a modular structure. It also facilitates the assembly, maintenance, and even replacement of components such as the second heat exchange component 42 inside the housing 10 via the first opening 131. Additionally, it facilitates the connection and disconnection operations between the second heat exchange component 42 and the first heat exchange component 41 inside the housing 10 via the first opening 131.

[0238] Please see Figure 1 , Figure 7 , Figure 8 In some embodiments of this application, the outer casing 418 is movable relative to the sidewall 13 to open or close the first opening 131. The movement of the outer casing 418 relative to the sidewall 13 can be planar movement, rotation, etc.

[0239] By adopting the above solution, the outer shell 418 can be movably connected to the housing 10, thus conveniently, quickly, and reliably connecting the outer shell 418 to the side wall 13. Furthermore, based on this movable connection, the outer shell 418 can open the first opening 131 relative to the side wall 13, facilitating the connection and interaction between the second heat exchange component 42 and other components inside the housing 10 and the first heat exchange component 41, and making maintenance and replacement of these components easier. The outer shell 418 can also close the first opening 131 relative to the side wall 13, thereby improving the protection performance of the second heat exchange component 42 and other components inside the housing 10, and enhancing their reliability and service life.

[0240] Please see Figure 1 , Figure 7 , Figure 8 In some embodiments of this application, the housing 418 includes a back frame 4182 and a frame 4183 mounted on the back frame 4182. The first heat exchanger 412 and the fan 411 are disposed in the frame 4183. The back frame 4182 is detachably mounted on the side wall 13.

[0241] It should be noted that the back frame 4182 is a component used by the outer shell 418 to connect with the side wall 13. The back frame 4182 has a certain structural strength and rigidity, and the material of the back frame 4182 can be flexibly set, for example, stainless steel, aluminum alloy, etc. The back frame 4182 is detachably installed on the side wall 13. In the finished state of the energy storage device 1, the back frame 4182 can be located between the first heat exchanger 412 and the side wall 13, and close the first opening 131.

[0242] The frame 4183 is installed on the side of the back frame 4182 away from the side wall 13. The first heat exchanger 412 and the fan 411 are located inside the frame 4183. The frame 4183 and the back frame 4182 can jointly protect the first heat exchanger 412 and the fan 411.

[0243] By adopting the above-described scheme, the outer casing 418, through the back frame 4182 and frame 4183 with certain structural strength and rigidity, can accommodate the first heat exchanger 412 and fan 411 and provide reliable dustproof and waterproof protection, thereby improving the reliability and service life of the first heat exchange component 41. Furthermore, the outer casing 418, through the back frame 4182 with certain structural strength and rigidity, can be detachably connected to the side wall 13, allowing for convenient, quick, and reliable installation of the first heat exchange component 41 onto the outside of the side wall 13, thus improving the installation reliability between the first heat exchange component 41 and the side wall 13. Moreover, when the back frame 4182 is installed on the side wall 13, the back frame 4182 can essentially close the first opening 131, thereby improving the protection performance of components such as the second heat exchange component 42 inside the housing 10. Furthermore, when the back frame 4182 is disassembled from the side wall 13, the first heat exchange component 41 can be assembled, transported, stored, and maintained as a modular structure. It also facilitates the assembly, maintenance, and even replacement of components such as the second heat exchange component 42 inside the housing 10 through the first opening 131. It also facilitates the connection and disconnection operations between the second heat exchange component 42 inside the housing 10 and the first heat exchange component 41 through the first opening 131.

[0244] Please see Figure 1 , Figure 7 , Figure 8 In some embodiments of this application, the back frame 4182 is movable relative to the side wall 13 to open or close the first opening 131.

[0245] By adopting the above solution, the back frame 4182 can be movably connected to the side wall 13, thus achieving a convenient, quick, and reliable connection between the back frame 4182 and the side wall 13. Furthermore, based on this movable connection, the back frame 4182 can open the first opening 131 relative to the side wall 13, facilitating the connection and interaction between the second heat exchange component 42 and other components inside the housing 10 and the first heat exchange component 41, and facilitating the maintenance and replacement of these components. The back frame 4182 can also close the first opening 131 relative to the side wall 13, allowing the first heat exchange component 41 to close the first opening 131, thereby improving the protection performance of the second heat exchange component 42 and other components inside the housing 10, and enhancing their reliability and service life.

[0246] Please see Figure 1 , Figure 7 , Figure 8 In some embodiments of this application, the back frame 4182 is hinged to the side wall 13.

[0247] It should be noted that the back frame 4182 is hinged (i.e., rotatably connected) to the side wall 13. This hinge can be either along one side of the back frame 4182's width direction a, or along one side of the back frame 4182's height direction. The height direction of the back frame 4182 is perpendicular to its width direction a. Therefore, the back frame 4182 can rotate relative to the side wall 13 about the side where it is hinged, thereby opening or closing the first opening 131.

[0248] By adopting the above solution, the back frame 4182 can be hinged to the housing 10, thus achieving a convenient, quick, and reliable connection between the back frame 4182 and the housing 10. Furthermore, based on the hinge, the back frame 4182 can rotate relative to the side wall 13 to open the first opening 131, facilitating the connection and interaction between the second heat exchange component 42 and other components inside the housing 10 and the first heat exchange component 41, and making it easier to maintain and replace the second heat exchange component 42 and other components inside the housing 10. The back frame 4182 can rotate relative to the side wall 13 to adjust the orientation of the fan 411, allowing for flexible adjustment of where the hot air from the fan 411 blows. This reduces the risk of the fan 411 blowing towards obstacles (such as walls) and affecting its airflow, thus optimizing the airflow and heat dissipation effect of the fan 411. The back frame 4182 can rotate relative to the side wall 13 to close the first opening 131, thereby improving the protection performance of the second heat exchange component 42 and other components inside the housing 10, and improving the reliability and service life of the second heat exchange component 42 and other components inside the housing 10.

[0249] Of course, in other embodiments, the back frame 4182 can move relative to the plane of the side wall 13 to open or close the first opening 131. For example, the back frame 4182 may be slidably connected to the side wall 13.

[0250] Please see Figure 8 , Figure 9 , Figure 10 In some embodiments of this application, the energy storage device 1 further includes an angle constraint component 60, which is connected between the back frame 4182 and the side wall 13 and is used to constrain the included angle between the back frame 4182 and the side wall 13.

[0251] It should be noted that the angle constraint component 60 is connected between the back frame 4182 and the side wall 13, for example, it can be connected to the side of the back frame 4182 and the side wall 13 facing each other, or it can be connected to the hinge between the back frame 4182 and the side wall 13.

[0252] Angle constraint component 60 is used to constrain the angle between the back frame 4182 and the side wall 13. For example, angle constraint component 60 can constrain the angle between the back frame 4182 and the side wall 13 to a preset angle. Or, for example, angle constraint component 60 can constrain the range of variation of the angle between the back frame 4182 and the side wall 13.

[0253] By adopting the above solution, in some cases, the angle constraint component 60 can constrain the variable range of the angle between the back frame 4182 and the side wall 13, thereby constraining the rotation range of the back frame 4182 relative to the side wall 13, that is, constraining the opening degree of the back frame 4182 relative to the side wall 13. In some cases, the angle constraint component 60 can constrain the angle between the back frame 4182 and the side wall 13 to a preset angle, thereby stabilizing the opening angle of the back frame 4182 relative to the side wall 13. This improves the ease of operation and stability of rotating the back frame 4182 relative to the side wall 13, and reduces the risk of component damage or even personal injury caused by excessive rotation or accidental closure of the back frame 4182.

[0254] Please see Figure 8 , Figure 9 , Figure 10 In some embodiments of this application, a first bracket 132 is provided on the side of the sidewall 13 facing the back frame 4182, and the first bracket 132 has a first hole 1321. A second bracket 4181 is provided on the side of the back frame 4182 facing the sidewall 13, and the second bracket 4181 has a sliding groove 41811, which extends along the width direction a of the back frame 4182. The angle constraint assembly 60 includes a connector 61, a slider 62, and a connecting rod structure 63. The connector 61 is installed in the first hole 1321, and the slider 62 is slidably installed in the sliding groove 41811. One end of the connecting rod structure 63 is sleeved on the connector 61, and the other end of the connecting rod structure 63 is sleeved on the slider 62.

[0255] It should be noted that the first bracket 132 can be fixedly or detachably installed on the side of the side wall 13 facing the back frame 4182. The second bracket 4181 can be fixedly or detachably installed on the side of the back frame 4182 facing the side wall 13. The first bracket 132 and the second bracket 4181 are correspondingly arranged and are both connecting components that facilitate the connection of the angle constraint assembly 60. The angle constraint assembly 60 is connected between the first bracket 132 and the second bracket 4181, that is, between the side of the side wall 13 facing the back frame 4182 and the side of the back frame 4182 facing the side wall 13. The first bracket 132 can be, but is not limited to, an L-shaped profile, and the second bracket 4181 can be, but is not limited to, an L-shaped profile.

[0256] The first bracket 132 has a first hole 1321, which can be a through hole or a blind hole, and can be, but is not limited to, a circular hole or a rectangular hole. A connector 61 is installed in the first hole 1321, with a portion of the connector 61 exposed in the first hole 1321 to facilitate connection to the connecting rod structure 63. The connector 61 can be, but is not limited to, a bolt or a pin.

[0257] The second bracket 4181 is provided with a sliding groove 41811, which extends along the width direction a of the back frame 4182. The sliding groove 41811 may be continuous or non-continuous in its depth direction. A sliding member 62 is installed in the sliding groove 41811 and can slide back and forth along the extension direction of the sliding groove 41811. Part of the sliding member 62 is exposed in the sliding groove 41811 to facilitate connection with the connecting rod structure 63. The sliding member 62 may be, but is not limited to, a bolt, a pin, etc.

[0258] One end of the connecting rod structure 63 is sleeved on the connector 61. Based on this, the end of the connecting rod structure 63 connected to the connector 61 can be stably installed relative to the connector 61 and the first hole 1321, and the connecting rod structure 63 has the degree of freedom to rotate around the connector 61.

[0259] The end of the connecting rod structure 63 away from the connector 61 is sleeved onto the slider 62. Based on this, the end of the connecting rod structure 63 connected to the slider 62 can slide back and forth along the slide groove 41811 synchronously with the slider 62, and the end of the connecting rod structure 63 connected to the slider 62 can adaptively rotate around the slider 62 to reduce the risk of jamming in the movement of the connecting rod structure 63.

[0260] Based on this, the sliding range of the slider 62 in the slide groove 41811 can constrain the rotation range of the connecting rod structure 63, thereby constraining the rotation range of the back frame 4182 relative to the side wall 13.

[0261] By adopting the above scheme, during the rotation of the back frame 4182 relative to the side wall 13, the linkage structure 63 of the angle constraint component 60 will adaptively rotate around the connector 61, and the end of the linkage structure 63 connected to the sliding member 62 will reciprocate along the slide groove 41811 synchronously with the sliding member 62. Based on this, the angle constraint component 60 can constrain the rotation range of the linkage structure 63 through the sliding range of the sliding member 62 in the slide groove 41811, thereby constraining the rotation range of the back frame 4182 relative to the side wall 13, constraining the variable range of the included angle between the back frame 4182 and the side wall 13, and constraining the degree to which the back frame 4182 can be opened relative to the side wall 13. As a result, the ease of operation and operational stability of the rotation of the back frame 4182 relative to the side wall 13 can be improved, the risk of component damage caused by excessive rotation of the back frame 4182 can be reduced, wear and collision between the back frame 4182 and the side wall 13 can be reduced, and the performance and service life of the energy storage device 1 can be improved. Furthermore, it is easy to adjust the orientation of the fan 411 within a preset range, which helps to optimize the airflow and heat dissipation effect of the fan 411.

[0262] Of course, in other embodiments, the angle constraint component 60 can adopt other structural forms to achieve a variable range of the included angle between the back frame 4182 and the side wall 13. For example, the back frame 4182 and the side wall 13 are rotatably connected via a rotating shaft and a rotating cylinder. In this case, the angle constraint component 60 may include a limiting block and a limiting groove. The limiting block protrudes from the outer periphery of the rotating shaft, and the limiting groove is opened in the inner cylinder of the rotating cylinder. The limiting block slides within the limiting groove, and the sliding range of the limiting block in the limiting groove constrains the rotation range of the back frame 4182 relative to the side wall 13. As another example, the angle constraint component 60 can be a hydraulic device or a pneumatic device. The angle constraint component 60 can drive the rotation of the back frame 4182 relative to the side wall 13 and can also precisely control the rotation range of the back frame 4182 relative to the side wall 13.

[0263] Please see Figure 8 , Figure 9 , Figure 10 In some embodiments of this application, a first bracket 132 is provided on the side of the sidewall 13 facing the back frame 4182, and the first bracket 132 has a second hole 1322. A second bracket 4181 is provided on the side of the back frame 4182 facing the sidewall 13, and the second bracket 4181 has a third hole 41812. The angle constraint assembly 60 includes a leg 64. One end of the leg 64 is inserted into the second hole 1322, and the other end of the leg 64 is inserted into the third hole 41812.

[0264] It should be noted that the first bracket 132 can be fixedly or detachably installed on the side of the side wall 13 facing the back frame 4182. The second bracket 4181 can be fixedly or detachably installed on the side of the back frame 4182 facing the side wall 13. The first bracket 132 and the second bracket 4181 are correspondingly arranged and are both connecting components that facilitate the connection of the angle constraint assembly 60. The angle constraint assembly 60 is connected between the first bracket 132 and the second bracket 4181, that is, between the side of the side wall 13 facing the back frame 4182 and the side of the back frame 4182 facing the side wall 13. The first bracket 132 can be, but is not limited to, an L-shaped profile, and the second bracket 4181 can be, but is not limited to, an L-shaped profile.

[0265] The first bracket 132 has a second hole 1322, which can be a through hole or a blind hole, and can be, but is not limited to, a circular hole or a rectangular hole. One end of the support leg 64 is detachably inserted into the second hole 1322 to stabilize its position relative to the second hole 1322. Figure 9 , Figure 10 As shown, in some embodiments, one end of the support leg 64 can be bent and inserted into the second hole 1322.

[0266] The second bracket 4181 has a third hole 41812, which can be a through hole or a blind hole, and can be, but is not limited to, a circular hole or a rectangular hole. One end of the support leg 64 near the second bracket 4181 is detachably inserted into the third hole 41812 for stable positioning relative to the third hole 41812. Figure 9 , Figure 10 As shown, in some embodiments, the end of the support leg 64 near the second bracket 4181 can be bent and inserted into the third hole 41812.

[0267] By adopting the above scheme, the angle restraint component 60 can insert one end of the support leg 64 into the second hole 1322 and the other end of the support leg 64 into the third hole 41812, so that the support leg 64 abuts between the first bracket 132 and the second bracket 4181, and thus abuts between the side wall 13 and the back frame 4182. Based on this, the angle restraint component 60 can stabilize the angle between the back frame 4182 and the side wall 13 at a preset angle by using the support leg 64 abutting between the side wall 13 and the back frame 4182, thereby stabilizing the opening angle of the back frame 4182 relative to the side wall 13. This improves the ease of operation and stability of rotating the back frame 4182 relative to the side wall 13, reduces the risk of component damage or even personal injury caused by accidental closure of the back frame 4182, facilitates connection and interaction between components inside the side wall 13 and components on the back frame 4182 when the back frame 4182 is stably open, facilitates maintenance and replacement of components inside the side wall 13 when the back frame 4182 is stably open, and facilitates stabilizing the orientation of the fan 411 to optimize the airflow and heat dissipation effect of the fan 411.

[0268] Furthermore, the support leg 64 is detachable from the second hole 1322, and also detachable from the third hole 41812. This allows for easy rotation of the back frame 4182 relative to the side wall 13 when the support leg 64 is detached from the first bracket 132 and the second bracket 4181. It also facilitates the replacement of support legs 64 of different lengths, ensuring that the angle between the back frame 4182 and the side wall 13 can be stabilized at any desired angle.

[0269] It should be noted that the embodiments related to "leg 64" and "connector 61, slider 62, and link structure 63" can be selected or combined. When the embodiments related to "leg 64" and "connector 61, slider 62, and link structure 63" are combined, the functions of components such as connector 61, slider 62, and link structure 63 are utilized even when leg 64 is disassembled.

[0270] Of course, in other embodiments, the support leg 64 may bypass the first bracket 132 and the second bracket 4181 and directly abut against the side wall 13 and the back frame 4182. For example, suction cups may be provided at opposite ends of the support leg 64 to ensure that the support leg 64 is stably abutted against the side wall 13 and the back frame 4182.

[0271] Please see Figure 7 In some embodiments of this application, the sidewall 13 has a first edge 133 and a second edge 134 opposite each other along a first direction x, the first direction x being perpendicular to the direction of gravity, a first opening 131 adjacent to the first edge 133 and away from the second edge 134, and a back frame 4182 hinged to the side of the first opening 131 near the first edge 133.

[0272] By adopting the above solution, the back frame 4182 can be opened relative to the side wall 13 from the side near the first edge 133, which makes it easier to install other maintenance doors or other components on the side of the first opening 131 near the second edge 134. This reduces the risk of the rotation of the back frame 4182 interfering with the maintenance door or other components on the side of the first opening 131 near the second edge 134.

[0273] Please see Figure 7 , Figure 8 In some embodiments of this application, one side of the back frame 4182 is hinged to the side wall 13 by a hinge 50.

[0274] It should be noted that the hinge 50 is connected to both the back frame 4182 and the side wall 13 by bolts, so that the back frame 4182 and the side wall 13 can be hinged together via the hinge 50. At least one hinge 50 is provided between the back frame 4182 and the side wall 13.

[0275] By adopting the above solution, one side of the back frame 4182 can be hinged to the side wall 13 via hinge 50 and bolts. Based on this, the ease of connection and reliability of the hinge between the back frame 4182 and the side wall 13 can be improved, as can the ease of assembly and disassembly between the back frame 4182 and the side wall 13.

[0276] Of course, in other embodiments, one side of the back frame 4182 may be hinged to the side wall 13 by other means (e.g., a pivot and a rotating cylinder).

[0277] Please see Figure 1 , Figure 3 In some embodiments of this application, the housing 418 further includes a packaging plate 4184, which is mounted on the side of the frame 4183 opposite to the back frame 4182; the fan 411 is embedded in the packaging plate 4184, and at least one of the back frame 4182 and the frame 4183 is provided with an air inlet 41831.

[0278] It should be noted that the encapsulation plate 4184 is installed on the side of the frame 4183 facing away from the back frame 4182. The back frame 4182, the frame 4183, and the encapsulation plate 4184 together form a receiving cavity. The first heat exchanger 412 and other components are housed within the receiving cavity. The back frame 4182, the frame 4183, and the encapsulation plate 4184 can jointly protect the first heat exchanger 412 and other components.

[0279] The fan 411 is embedded in the encapsulation plate 4184, and the installation position of the fan 411 is the air outlet, that is, the fan 411 is installed at the air outlet. At least one of the back frame 4182 and the frame 4183 is provided with an air inlet 41831, so that the fan 411 can generate airflow from the air inlet 41831 to the air outlet when it is started.

[0280] By adopting the above solution, the outer casing 418, through the encapsulation plate 4184, back frame 4182, and frame 4183, forms a fully protective and structurally reliable shell to accommodate components such as the first heat exchanger 412, achieving reliable dustproof and waterproof protection for these components. Based on this, it is beneficial to improve the reliability and service life of the first heat exchange assembly 41. Furthermore, by embedding the fan 411 into the encapsulation plate 4184, so that the installation position of the fan 411 is the air outlet, the fan 411 can generate airflow from the air inlet 41831 to the air outlet when started, thereby optimizing the heat dissipation airflow of the fan 411.

[0281] Please see Figure 1 , Figure 3 In some embodiments of this application, at least one of the back frame 4182 and the frame 4183 is provided with a lifting ring 4185.

[0282] It should be noted that, based on the previous embodiment, the back frame 4182 may be equipped with a lifting ring 4185, the frame 4183 may be equipped with a lifting ring 4185, or both the back frame 4182 and the frame 4183 may be equipped with lifting rings 4185. The lifting ring 4185 facilitates lifting and transportation. Figure 3 As shown, in some embodiments, the lifting ring 4185 is located at the top of the back frame 4182 or the frame 4183. Of course, in other embodiments, the lifting ring 4185 may be located in an area of ​​the back frame 4182 or the frame 4183 other than the top.

[0283] By adopting the above solution, a lifting ring 4185 can be provided on at least one of the back frame 4182 and the frame 4183, so that the first heat exchange component 41 can be hoisted and transported as a whole conveniently, quickly and reliably via the lifting ring 4185.

[0284] Please see Figure 1 In some embodiments of this application, the container 10 is a 20-foot standard container. It should be noted that the "standard 20-foot container" can be referred to in "GBT1413-2023 Series 1 Container Classification, Dimensions and Rated Mass".

[0285] By adopting the above solution, the energy density and thermal management performance of the energy storage device 1 can be balanced even when the size of the housing 10 is limited.

[0286] Of course, in other embodiments, the housing 10 may be of non-standard size or other standard size.

[0287] Please see Figure 11 , Figure 2 In some embodiments of this application, the housing 10 includes a battery compartment 14, an electrical compartment 15, and a liquid cooling compartment 16. The battery device 20 and the thermal management component 30 are disposed in the battery compartment 14, the second heat exchange component 42 is disposed in the liquid cooling compartment 16, the electrical compartment 15 is used to house the power distribution module (e.g., power distribution box) or control module (e.g., main control box) of the energy storage device 1, the electrical compartment 15 and the liquid cooling compartment 16 are disposed on the same side of the battery compartment 14, and the first heat exchange component 41 is disposed on the outside of the liquid cooling compartment 16.

[0288] By adopting the above scheme, the housing 10 can be divided into a battery compartment 14 for housing the battery device 20 and the thermal management component 30, a liquid cooling compartment 16 for housing the second heat exchange component 42, and an electrical compartment 15 for housing the power distribution module or control module of the energy storage device 1. The internal layout of the housing 10 is optimized by regularly arranging the electrical compartment 15 and the liquid cooling compartment 16 on the same side of the battery compartment 14. Based on this, it is convenient to establish the necessary electrical connections between the modules (power distribution module or control module) in the electrical compartment 15 and the adjacent components such as the battery device 20. It is also convenient to connect the second heat exchange component 42 in the liquid cooling compartment 16 and the adjacent thermal management component 30 to form a first circulation loop 40a. Furthermore, since the first heat exchange component 41 is located on the outside of the liquid cooling compartment 16, it is also convenient to connect the second heat exchange component 42 in the liquid cooling compartment 16 and the adjacent first heat exchange component 41 to form a second circulation loop 40b. Therefore, the layout of the battery device 20, thermal management component 30, power distribution module or control module, second heat exchange component 42, etc. in the housing 10 can be optimized, the layout of the second heat exchange component 42 outside the housing 10 can be optimized, the structure of the energy storage device 1 can be optimized, and the connection and interaction of the various components of the energy storage device 1 can be facilitated.

[0289] Please see Figure 1 , Figure 2 , Figures 3-11Based on the above embodiments, this application provides a specific example of an energy storage device 1. The energy storage device 1 includes a housing 10, a battery device 20, a thermal management component 30, and a liquid cooling system 40. The housing 10 is a standard 20-foot shipping container. The housing 10 has a top wall 11 and a bottom wall 12 spaced apart along the direction of gravity, and a side wall 13 connecting the top wall 11 and the bottom wall 12, with a first opening 131 in the side wall 13. The housing 10 includes a battery compartment 14, an electrical compartment 15, and a liquid cooling compartment 16. The electrical compartment 15 and the liquid cooling compartment 16 are located on the same side of the battery compartment 14. The battery device 20 and the thermal management component 30 are located within the battery compartment 14. The thermal management component 30 is used to regulate the temperature of the battery device 20. The electrical compartment 15 is used to house the power distribution module (e.g., a distribution box) or control module (e.g., a main control box) of the energy storage device 1.

[0290] The liquid cooling system 40 includes a first heat exchange component 41 and a second heat exchange component 42. The second heat exchange component 42 is located inside the liquid cooling chamber 16 of the housing 10, while the first heat exchange component 41 is installed outside the liquid cooling chamber 16, i.e., the first heat exchange component 41 is installed outside the side wall 13 and closes the first opening 131. Based on this, on the one hand, the space originally reserved for the first heat exchange component 41 inside the housing 10 can be saved (i.e., space is freed up), thereby facilitating the integration of more battery devices 20 inside the housing 10 and increasing the capacity and energy density of the energy storage device 1. On the other hand, since the first heat exchange component 41 is located outside the housing 10, the liquid cooling system 40 can directly dissipate heat to the outside of the housing 10 through the first heat exchange component 41, thereby improving the thermal management performance of the liquid cooling system 40. This allows the liquid cooling system 40 to work with the thermal management component 30 to meet the thermal management needs of more battery devices 20, which is beneficial to improving the reliability and service life of the various components of the energy storage device 1. Furthermore, the first heat exchange component 41 and the second heat exchange component 42 can be formed into modular structures, and can be transported, maintained, and replaced separately.

[0291] The first heat exchange assembly 41 includes a fan 411, a first heat exchanger 412, and a third heat exchanger 413. The fan 411 and the first heat exchanger 412 are aligned along the axial direction L of the fan 411, and the fan 411 and the third heat exchanger 413 are also aligned along the axial direction L of the fan 411. The first heat exchanger 412 is located on the side of the third heat exchanger 413 away from the fan 411. The fan 411 is located within the enclosed area of ​​the first heat exchanger 412 and also within the enclosed area of ​​the third heat exchanger 413. The first heat exchanger 412 includes a third collector 4121, a plurality of second tubes 4122, and a fourth collector 4123. The flow channels of the plurality of second tubes 4122 are connected in parallel between the flow channels of the third collector 4121 and the flow channels of the fourth collector 4123. A portion of the second tubes 4122 together form a third tube group 4124, and another portion of the second tubes 4122 together form a fourth tube group 4125. The third tube group 4124 is connected between one end of the third collector 4121 and one end of the fourth collector 4123, and the fourth tube group 4125 is connected between the other end of the third collector 4121 and the other end of the fourth collector 4123. The third heat exchanger 413 includes a first collector 4131, a plurality of first tubes 4132, and a second collector 4133. The flow channels of the plurality of first tubes 4132 are connected in parallel between the flow channels of the first collector 4131 and the flow channels of the second collector 4133. A portion of the first tubes 4132 together form a first tube group 4134, and another portion of the first tubes 4132 together form a second tube group 4135. The first tube group 4134 is connected between one end of the first collector 4131 and one end of the second collector 4133, and the second tube group 4135 is connected between the other end of the first collector 4131 and the other end of the second collector 4133. The third collector 4121 of the first heat exchanger 412 and the first collector 4131 of the third heat exchanger 413 are jointly mounted and supported by a first support frame 70. The fourth collector 4123 of the first heat exchanger 412 and the second collector 4133 of the third heat exchanger 413 are jointly installed and supported by the second support frame 80.

[0292] The second heat exchange assembly 42 includes a pumping device 421, a second heat exchanger 422, a compressor 423, and a throttling device 424. The pumping device 421, the second heat exchanger 422, and the thermal management component 30 are connected in sequence, with the thermal management component 30 connected to the pumping device 421 to form a first circulation loop 40a. The compressor 423, the first heat exchanger 412, the throttling device 424, and the second heat exchanger 422 are connected in sequence, with the second heat exchanger 422 connected to the compressor 423 to form a second circulation loop 40b. The pumping device 421, the third heat exchanger 413, and the thermal management component 30 are connected in sequence, with the thermal management component 30 connected to the pumping device 421 to form a natural cooling loop 40c. The pumping device 421 is switched between being connected to either the first circulation loop 40a or the natural cooling loop 40c.

[0293] Under moderate or high ambient temperatures, the pumping device 421 can switch to connect the first circulation loop 40a, allowing the liquid cooling system 40 and the thermal management component 30 to effectively and reliably cool the battery device 20 through a multi-stage cooling scheme formed by the combination of the first circulation loop 40a, the second circulation loop 40b, and the fan 411. This multi-stage cooling scheme is as follows: In the first circulation loop 40a, under the delivery of the pumping device 421, the coolant circulates along the first circulation loop 40a through the thermal management component 30 and directly exchanges heat with the battery device 20, thus cooling the battery device 20. After exchanging heat with the battery device 20, the coolant can also circulate along the first circulation loop 40a through the second heat exchanger 422, where it exchanges heat with the refrigerant in the second circulation loop 40b, thereby transferring the heat of the coolant to the refrigerant and cooling the coolant. In the second circulation loop 40b, under the power of the compressor 423, the refrigerant can circulate along the second circulation loop 40b through the first heat exchanger 412 and exchange heat with the first heat exchanger 412, transferring the heat from the coolant to the first heat exchanger 412, thus initially cooling the refrigerant. After exchanging heat with the first heat exchanger 412, the refrigerant can also circulate along the second circulation loop 40b through the throttling device 424, so that the throttling device 424 can cool and reduce the pressure of the refrigerant. After being cooled and reduced in pressure by the throttling device 424, the refrigerant can also circulate along the second circulation loop 40b through the second heat exchanger 422, where it exchanges heat with the coolant in the first circulation loop 40a. For the heat obtained by the first heat exchanger 412 from the refrigerant, the fan 411 can be started to generate an airflow that flows through the first heat exchanger 412 and out of the housing 10, thereby dissipating the heat of the first heat exchanger 412 to the outside of the housing 10.

[0294] In low ambient temperatures, the pumping device 421 can switch to the natural cooling circuit 40c, allowing the liquid cooling system 40 and the thermal management component 30 to bypass the second circulation circuit 40b and instead utilize a natural cooling scheme combining the natural cooling circuit 40c and the fan 411 to effectively and reliably cool the battery device 20. Specifically, when the pumping device 421 switches to the natural cooling circuit 40c, the coolant circulates along the natural cooling circuit 40c through the thermal management component 30 and directly exchanges heat with the battery device 20, thus cooling the battery device 20. After exchanging heat with the battery device 20, the coolant can also circulate along the natural cooling circuit 40c through the third heat exchanger 413 and exchange heat with it, transferring the heat from the battery device 20 to the third heat exchanger 413, thereby lowering the coolant temperature. For the heat obtained by the third heat exchanger 413 from the coolant, the fan 411 can be started and take advantage of the low ambient temperature to generate cold air (airflow) to quickly and effectively remove the heat from the third heat exchanger 413 (i.e., heat dissipation).

[0295] The second heat exchange assembly 42 also includes an electric heating element 429, which is disposed on the first circulation loop 40a. The first circulation loop 40a has a cooling mode when the electric heating element 429 is not activated, and a heating mode when the electric heating element 429 is activated. Based on this, when the temperature of the battery device 20 is lower than the suitable operating temperature, the coolant can be heated through the heating mode of the first circulation loop 40a, that is, through the activated electric heating element 429, so that the coolant can flow through the thermal management component 30 and provide heat to the battery device 20, thereby heating the battery device 20 and raising its temperature to the suitable operating temperature.

[0296] This optimizes the structure and thermal management performance of the liquid cooling system 40, improves the combined thermal management performance of the first heat exchange component 41 and the second heat exchange component 42 for the battery device 20, and enhances the reliability and lifespan of both the battery device 20 and the energy storage device 1. In particular, in low ambient temperatures, a natural cooling scheme can be implemented to skip the second circulation loop 40b, thereby eliminating the need to operate the compressor 423 and the throttling device 424. This reduces the operating time of the compressor 423 and the throttling device 424, lowers power consumption, and ultimately extends the lifespan of the compressor 423 and the throttling device 424, ultimately saving on the operating costs of the energy storage device 1.

[0297] The second heat exchange component 42 has a first interface 425 on the side facing the first heat exchange component 41, and one end of the first interface 425 is connected to the outlet of the compressor 423. Correspondingly, the first heat exchange component 41 has a third interface 414 on the side facing the second heat exchange component 42, and one end of the third interface 414 is connected to the inlet of the first heat exchanger 412. The first interface 425 and the third interface 414 can be connected by a first pipe 43 to enable the outlet of the compressor 423 to communicate with the inlet of the first heat exchanger 412. When the first pipe 43 is disassembled between the first interface 425 and the third interface 414, the first interface 425 can be automatically sealed and the third interface 414 can be automatically sealed. The second heat exchange component 42 has a second interface 426 on the side facing the first heat exchange component 41, and one end of the second interface 426 is connected to the inlet of the throttling device 424. Correspondingly, the first heat exchange component 41 has a fourth interface 415 on the side facing the second heat exchange component 42, and one end of the fourth interface 415 is connected to the outlet of the first heat exchanger 412. The second interface 426 and the fourth interface 415 can be connected by a second pipe 44 to enable the outlet of the first heat exchanger 412 to communicate with the inlet of the throttling device 424. When the second pipe 44 is disassembled between the second interface 426 and the fourth interface 415, the second interface 426 can be automatically sealed and the fourth interface 415 can be automatically sealed. The second heat exchange component 42 has a fifth interface 427 on the side facing the first heat exchange component 41, and the fifth interface 427 is connected to the outlet of the pumping device 421. Correspondingly, the first heat exchange component 41 has a seventh interface 416 on the side facing the second heat exchange component 42, and the seventh interface 416 is connected to the inlet of the third heat exchanger 413. The fifth interface 427 and the seventh interface 416 can be connected by a third pipe 45 to enable the outlet of the pumping device 421 to communicate with the inlet of the third heat exchanger 413. When the third pipe 45 is disassembled between the fifth interface 427 and the seventh interface 416, the fifth interface 427 can be automatically sealed and the seventh interface 416 can be automatically sealed. The second heat exchange component 42 has a sixth interface 428 on the side facing the first heat exchange component 41, which is connected to the inlet of the pumping device 421. Correspondingly, the first heat exchange component 41 has an eighth interface 417 on the side facing the second heat exchange component 42, which is connected to the outlet of the third heat exchanger 413. The sixth interface 428 and the eighth interface 417 can be connected by a fourth pipe 46 to enable communication between the outlet of the third heat exchanger 413 and the inlet of the pumping device 421. When the fourth pipe 46 is disassembled between the sixth interface 428 and the eighth interface 417, the sixth interface 428 and the eighth interface 417 can automatically seal. Among them, the first interface 425, the second interface 426, the third interface 414, the fourth interface 415, the fifth interface 427, the sixth interface 428, the seventh interface 416, and the eighth interface 417 are all quick-connect fittings.Based on this, the modular first heat exchange component 41 and the second heat exchange component 42 can be easily transported, maintained, and replaced.

[0298] The first heat exchange assembly 41 also includes a housing 418, with the first heat exchanger 412 and the third heat exchanger 413 disposed inside the housing 418, and the fan 411 embedded in the wall of the housing 418, so that the first heat exchange assembly 41 can form a modular structure, which facilitates the disassembly, transportation, maintenance and replacement of the first heat exchange assembly 41 as a whole.

[0299] The outer casing 418 includes a back frame 4182, which is detachably mounted to the side wall 13. The back frame 4182 is hinged to the side wall 13 and can rotate relative to the side wall 13 about the side where it is hinged, thereby opening or closing the first opening 131. Based on this, the back frame 4182 can rotate relative to the side wall 13 to open the first opening 131, facilitating the connection and interaction between components such as the second heat exchange assembly 42 inside the casing 10 and the first heat exchange assembly 41, and facilitating the maintenance and replacement of components such as the second heat exchange assembly 42 inside the casing 10. The back frame 4182 can rotate relative to the side wall 13 to adjust the orientation of the fan 411, allowing for flexible adjustment of where the hot air from the fan 411 blows, thereby reducing the risk of the fan 411 blowing towards obstacles (such as walls) and affecting the airflow of the fan 411, and helping to optimize the airflow and heat dissipation effect of the fan 411. The back frame 4182 can rotate relative to the side wall 13 to close the first opening 131, thereby improving the protection performance of the second heat exchange component 42 and other components inside the housing 10, and improving the reliability and service life of the second heat exchange component 42 and other components inside the housing 10.

[0300] A first bracket 132 is provided on the side of the sidewall 13 facing the back frame 4182. The first bracket 132 has a first hole 1321 and a second hole 1322. A second bracket 4181 is provided on the side of the back frame 4182 facing the sidewall 13. The second bracket 4181 has a sliding groove 41811 and a third hole 41812. The sliding groove 41811 extends along the width direction a of the back frame 4182. The energy storage device 1 also includes an angle constraint assembly 60. The angle constraint assembly 60 includes a connector 61, a slider 62, a connecting rod structure 63, and a support leg 64. The connector 61 is installed in the first hole 1321, and the slider 62 is slidably installed in the sliding groove 41811. One end of the connecting rod structure 63 is sleeved on the connector 61, and the other end of the connecting rod structure 63 is sleeved on the slider 62.

[0301] With one end of the support leg 64 inserted into the second hole 1322 and the other end inserted into the third hole 41812, the support leg 64 can abut against the first bracket 132 and the second bracket 4181, thereby abutting against the side wall 13 and the back frame 4182. Based on this, the angle restraint assembly 60 can stabilize the angle between the back frame 4182 and the side wall 13 at a preset angle by means of the support leg 64 abutting against the side wall 13 and the back frame 4182, thereby stabilizing the opening angle of the back frame 4182 relative to the side wall 13. This improves the ease of operation and stability of rotating the back frame 4182 relative to the side wall 13, reduces the risk of component damage or even personal injury caused by accidental closure of the back frame 4182, facilitates connection and interaction between components inside the side wall 13 and components on the back frame 4182 when the back frame 4182 is stably open, facilitates maintenance and replacement of components inside the side wall 13 when the back frame 4182 is stably open, and facilitates stabilizing the orientation of the fan 411 to optimize the airflow and heat dissipation effect of the fan 411.

[0302] Conversely, when the support leg 64 is disassembled between the first bracket 132 and the second bracket 4181, during the rotation of the back frame 4182 relative to the side wall 13, the connecting rod structure 63 can adaptively rotate around the connector 61, and the end of the connecting rod structure 63 connected to the sliding member 62 can reciprocate along the slide groove 41811 synchronously with the sliding member 62. Based on this, the angle constraint component 60 can constrain the rotation range of the connecting rod structure 63 through the sliding range of the sliding member 62 in the slide groove 41811, thereby constraining the rotation range of the back frame 4182 relative to the side wall 13, constraining the variable range of the included angle between the back frame 4182 and the side wall 13, and constraining the degree to which the back frame 4182 can be opened relative to the side wall 13. As a result, the ease of operation and operational stability of rotating the back frame 4182 relative to the side wall 13 can be improved, the risk of component damage due to excessive rotation of the back frame 4182 can be reduced, wear and collision between the back frame 4182 and the side wall 13 can be reduced, and the performance and service life of the energy storage device 1 can be improved. Furthermore, it is easy to adjust the orientation of the fan 411 within a preset range, which helps to optimize the airflow and heat dissipation effect of the fan 411.

[0303] The sidewall 13 has a first edge 133 and a second edge 134 opposite each other along a first direction x, which is perpendicular to the direction of gravity. A first opening 131 is adjacent to the first edge 133 and away from the second edge 134, and a back frame 4182 is hinged to the side of the first opening 131 near the first edge 133. This allows the back frame 4182 to open relative to the sidewall 13 from the side near the first edge 133, facilitating the installation of other maintenance doors or components on the side of the first opening 131 near the second edge 134, and reducing the risk of interference between the rotation of the back frame 4182 and the maintenance doors or other components on the side of the first opening 131 near the second edge 134.

[0304] The housing 418 also includes a frame 4183 and an encapsulation plate 4184. The encapsulation plate 4184 is disposed opposite to the back frame 4182, and the frame 4183 is connected between the encapsulation plate 4184 and the back frame 4182. The fan 411 is embedded in the encapsulation plate 4184, and at least one of the back frame 4182 and the frame 4183 is provided with an air inlet 41831. Based on this, the protective effect of the housing 418 can be improved, and the housing 418 can reliably protect components such as the first heat exchanger 412 from dust and water. Furthermore, since the fan 411 is embedded in the encapsulation plate 4184, the installation position of the fan 411 can form an air outlet, so that the fan 411 can generate airflow from the air inlet 41831 to the air outlet when it is started. At least one of the back frame 4182 and the frame 4183 is provided with a lifting ring 4185 to facilitate the hoisting and transportation of the first heat exchange assembly 41 as a whole.

[0305] Please see Figure 1 , Figure 7 , Figure 8 Some embodiments of this application provide an energy storage device 1, which includes a housing 10 and a casing 418. The casing 418 is detachably mounted on one side of the housing 10. The housing 10 has a first opening 131 on the side facing the casing 418, and the casing 418 is capable of closing the first opening 131.

[0306] By adopting the above solution, when the first opening 131 of the outer casing 418 is open, it is convenient to connect and interact with the components such as the second heat exchange component 42 inside the housing 10 and the components inside the outer casing 418, thus facilitating the maintenance and replacement of the components such as the second heat exchange component 42 inside the housing 10. When the first opening 131 of the outer casing 418 is closed, the protection performance of the components such as the second heat exchange component 42 inside the housing 10 is improved, thereby increasing the reliability and service life of the components such as the second heat exchange component 42 inside the housing 10.

[0307] The energy storage device 1 provided in this application embodiment may not involve the first heat exchange component 41 (e.g., Figure 1(as shown) and the second heat exchange component 42 (as shown) Figure 1 The improvements shown are mainly related to the housing 418, and are compatible with the above-mentioned embodiments related to the housing 418, as well as the above-mentioned embodiments related to the angle constraint component 60.

[0308] Please see Figure 12 , Figure 13 , Figure 14 Some embodiments of this application provide an energy storage system, which includes the energy storage device 1 provided in the embodiments of this application.

[0309] By adopting the above scheme, the energy storage system can improve energy density and take into account thermal management performance and space utilization by applying the energy storage device 1 provided in the embodiments of this application.

[0310] In some embodiments, the energy storage system may include a power generation device 2, a power conversion system (PCS) 3, and one or more energy storage devices 1. The power conversion system 3 is connected between the power generation device 2 and the energy storage device 1. The power generation device 2 generates electrical energy and stores it in the energy storage device 1 via the power conversion system 3. For example, the power generation device 2 may be a solar panel, hydroelectric power generation equipment, thermal power generation equipment, wind power generation equipment, etc. By using the energy storage device 1 provided in the above embodiments, the operational reliability of the energy storage system can be effectively improved.

[0311] Please see Figure 1 , Figure 13 , Figure 14 In some embodiments of this application, multiple energy storage devices 1 are provided, and the multiple energy storage devices 1 are arranged in a matrix. In two energy storage devices 1 arranged side by side along the opening direction of the first opening 131, the two energy storage devices 1 are provided with a first heat exchange component 41 on the side away from each other. The opening direction of the first opening 131 corresponds to the distribution direction of the first heat exchange component 41 and the second heat exchange component 42, and also corresponds to the distribution direction of the first heat exchange component 41 and the liquid cooling chamber 16.

[0312] By adopting the above scheme, the layout of multiple energy storage devices 1 can be optimized, and the space utilization rate of the energy storage system can be improved.

[0313] Please see Figure 15 Some embodiments of this application provide a charging network, which includes a charging pile 4 and an energy storage system provided in the embodiments of this application. The charging pile 4 is electrically connected to the energy storage system, and the energy storage system is used to provide power to the charging pile 4.

[0314] It should be noted that the charging network may include a charging pile 4 and an energy storage device 1 provided in this embodiment. The charging pile 4 and the battery device in the energy storage device 1 are electrically connected via a cable, and the battery device can provide its stored electrical energy to the charging pile 4. The charging pile 4 has a connector 401, which can be connected to electrical equipment (such as a vehicle) to replenish the energy of the electrical equipment. The energy storage device 1 may be located inside the charging pile 4 (e.g., an integrated charging and energy storage unit) or outside the charging pile 4. By using the energy storage device 1 provided in the above embodiment, the reliability of the charging network can be effectively improved, and the flexibility of the charging network during deployment can also be enhanced.

[0315] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An energy storage device, characterized by, The energy storage device comprises: a box body having a top wall and a bottom wall spaced apart along the direction of gravity, and a side wall connected between the top wall and the bottom wall, the side wall being provided with a first opening; a battery device arranged in the box body; a thermal management component arranged in the box body and used for adjusting the temperature of the battery device; a liquid cooling system comprising a first heat exchange assembly and a second heat exchange assembly, the second heat exchange assembly being arranged in the box body and connected with the thermal management component to form a first circulation loop, the first heat exchange assembly comprising a shell, a first heat exchanger and a fan, the shell being mounted outside the side wall and covering the first opening, the first heat exchanger being arranged in the shell and connected with the second heat exchange assembly to form a second circulation loop, and the fan being connected with the shell and used for dissipating heat from the first heat exchanger.

2. The energy storage device of claim 1, wherein, The second heat exchange assembly comprises a pumping device and a second heat exchanger; The pumping device, the second heat exchanger and the thermal management component are sequentially connected, and the thermal management component is connected with the pumping device to form the first circulation loop.

3. The energy storage device of claim 2, wherein, The second heat exchange assembly further comprises a compressor and a throttling device; the compressor, the first heat exchanger, the throttling device, the second heat exchanger are sequentially connected, and the second heat exchanger is connected with the compressor to form the second circulation loop.

4. The energy storage device of claim 2 or 3, wherein, The first heat exchange assembly further comprises a third heat exchanger arranged in the shell; The pumping device, the third heat exchanger and the thermal management component are sequentially connected, and the thermal management component is connected with the pumping device to form a natural cooling loop; the pumping device is switched to communicate with one of the first circulation loop and the natural cooling loop; The fan and the third heat exchanger are arranged in axial alignment along the fan.

5. The energy storage device of claim 4, wherein, The fan is arranged in an enclosed area of the third heat exchanger.

6. The energy storage device of claim 5, wherein, The third heat exchanger comprises a first manifold, a plurality of first tubes, a second manifold, flow channels of the plurality of first tubes being connected in parallel between flow channels of the first manifold and flow channels of the second manifold.

7. The energy storage device of claim 6, wherein, A part of the first tubes collectively form a first tube group, and another part of the first tubes collectively form a second tube group, the first tube group being connected between one end of the first manifold and one end of the second manifold, and the second tube group being connected between the other end of the first manifold and the other end of the second manifold.

8. The energy storage device of any one of claims 5-7, wherein, The first heat exchanger is arranged on a side of the third heat exchanger away from the fan.

9. The energy storage device of any one of claims 1-8, wherein, The fan is arranged in an enclosed area of the first heat exchanger.

10. The energy storage device of claim 9, wherein, The first heat exchanger comprises a third manifold, a plurality of second tubes, a fourth manifold, flow channels of the plurality of second tubes being connected in parallel between flow channels of the third manifold and flow channels of the fourth manifold.

11. The energy storage device of claim 10, wherein, A part of the second tubes collectively form a third tube group, and another part of the second tubes collectively form a fourth tube group, the third tube group being connected between one end of the third manifold and one end of the fourth manifold, and the fourth tube group being connected between the other end of the third manifold and the other end of the fourth manifold.

12. The energy storage device of any one of claims 1-11, wherein, The second heat exchange assembly is provided with a first interface and a second interface on a side facing the first heat exchange assembly, the shell is provided with a third interface and a fourth interface on a side facing the second heat exchange assembly, the first interface is detachably connected with the third interface through a first pipeline, the second interface is detachably connected with the fourth interface through a second pipeline, and the first interface, the second interface, the third interface and the fourth interface are all arranged on the second circulating loop.

13. The energy storage device of claim 12, wherein, At least one of the first interface, the second interface, the third interface and the fourth interface is a quick plug.

14. The energy storage device of any one of claims 4-8, wherein, The second heat exchange assembly is provided with a fifth interface and a sixth interface on a side facing the first heat exchange assembly, the shell is provided with a seventh interface and an eighth interface on a side facing the second heat exchange assembly, the fifth interface is detachably connected with the seventh interface through a third pipeline, the sixth interface is detachably connected with the eighth interface through a fourth pipeline, and the fifth interface, the sixth interface, the seventh interface and the eighth interface are all arranged on the natural cooling loop.

15. The energy storage device of any one of claims 1-14, wherein, The second heat exchange assembly further comprises an electric heating element arranged on the first circulating loop.

16. The energy storage device of any one of claims 1-15, wherein, The shell is detachably mounted on the side wall.

17. The energy storage device of claim 16, wherein, The shell is movable relative to the side wall to open or close the first opening.

18. The energy storage device of claim 16, wherein, The shell comprises a back frame and a frame body mounted on the back frame, the first heat exchanger and the fan are arranged in the frame body, and the back frame is detachably mounted on the side wall.

19. The energy storage device of claim 18, wherein, The back frame is movable relative to the side wall to open or close the first opening.

20. The energy storage device of claim 19, wherein, The back frame is hinged to the side wall.

21. The energy storage device of claim 20, wherein, The energy storage device further comprises an angle constraint assembly connected between the back frame and the side wall for constraining the included angle between the back frame and the side wall.

22. The energy storage device of claim 21, wherein, The side wall is provided with a first support on a side facing the back frame, and the first support is provided with a first hole; the back frame is provided with a second support on a side facing the side wall, and the second support is provided with a sliding groove extending along the width direction of the back frame; The angle constraint assembly comprises a connecting piece, a sliding piece and a connecting rod structure, the connecting piece is mounted on the first hole, the sliding piece is slidably mounted on the sliding groove, one end of the connecting rod structure is sleeved on the connecting piece, and the other end of the connecting rod structure is sleeved on the sliding piece.

23. The energy storage device of claim 21 or 22, wherein, The side wall is provided with a first support on a side facing the back frame, and the first support is provided with a second hole; the back frame is provided with a second support on a side facing the side wall, and the second support is provided with a third hole; The angle constraint assembly comprises a support leg, one end of the support leg is inserted into the second hole, and the other end of the support leg is inserted into the third hole.

24. The energy storage device of any one of claims 20-23, wherein, The side wall has a first edge and a second edge opposite in a first direction, the first direction is perpendicular to the direction of gravity, the first opening is adjacent to the first edge and away from the second edge, and the back frame is hinged to a side of the first opening close to the first edge.

25. The energy storage device of any one of claims 18-24, wherein, The shell further comprises a packaging plate mounted on the side of the frame body opposite to the back frame; the fan is embeddedly mounted on the packaging plate, and at least one of the back frame and the frame body is provided with an air inlet hole.

26. The energy storage device of any one of claims 18-25, wherein, At least one of the back frame and the frame body is provided with a lifting ring.

27. The energy storage device of any one of claims 1-26, wherein, The size of the box is the size of a 20-foot standard container.

28. The energy storage device of any one of claims 1-27, wherein, The box comprises a battery compartment, an electrical compartment and a liquid cooling compartment, the battery device and the heat management component are arranged in the battery compartment, the second heat exchange assembly is arranged in the liquid cooling compartment, the electrical compartment is used for placing a power distribution module or a control module of the energy storage device, the electrical compartment and the liquid cooling compartment are arranged on the same side of the battery compartment, and the first heat exchange assembly is arranged outside the liquid cooling compartment.

29. An energy storage system characterized by, The energy storage system comprises a plurality of energy storage devices as claimed in any one of claims 1-28, and the plurality of energy storage devices are arranged in a matrix. Among two energy storage devices arranged side by side along the opening direction of the first opening, the first heat exchange assembly is arranged on the side away from each other.

30. A charging network characterized by, The charging network comprises a charging pile and an energy storage system as claimed in claim 29, the charging pile is electrically connected with the energy storage system, and the energy storage system is used for providing electric energy for the charging pile.

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