Energy storage apparatus

Abstract

The present application relates to an energy storage apparatus, comprising an electrical module, a dry cooler, first piping, and second piping, wherein the electrical module comprises a first housing, a plurality of electronic devices, a first heat exchanger, and first inflow piping and first outflow piping connected to the first heat exchanger, the first heat exchanger and some of the electronic devices being both located in the first housing; the dry cooler is located outside the first housing, and comprises a first inlet and a first outlet; and with regard to the first piping and the second piping, the first piping connects the first inlet and the first outflow piping, and the second piping connects the first outlet and the first inflow piping. A first refrigerant is configured to circulate between the first heat exchanger and the dry cooler, and the first refrigerant flows out of the dry cooler via the first outlet, and flows into the dry cooler via the first inlet.

Description

Energy storage devices Technical Field

[0001] This application relates to the field of power distribution technology, and more particularly to an energy storage device. Background Technology

[0002] Energy storage devices are used to store electrical energy and are widely used in power systems, renewable energy integration, electric vehicle charging stations, and emergency backup power supplies. The electrical modules of energy storage devices mainly perform functions such as DC-AC conversion, monitoring and management of battery modules, and communication with external devices. Therefore, they generate a large amount of heat during operation.

[0003] Currently, one method of heat dissipation for electrical modules is to directly introduce external air into the housing of the electrical module, and then expel the introduced air after carrying some of the heat dissipated by the electronic components inside the electrical module. This method of heat dissipation requires the introduction of external air, which can easily cause dust to accumulate on the surface of the electronic components inside the housing, thereby weakening the heat dissipation effect of each electronic component.

[0004] Summary of the Invention

[0005] This application provides an energy storage device in which the internal electronic components accumulate dust at a low rate, thus ensuring effective cooling and heat dissipation.

[0006] This application provides an energy storage device, which includes an electrical module comprising a first housing, a plurality of electronic components, a first heat exchanger, and a first inflow pipe and a first outflow pipe connected to the first heat exchanger, wherein the first heat exchanger and some of the electronic components are located inside the first housing; a dry cooler located outside the first housing, the dry cooler including a first inlet and a first outlet; a first pipe and a second pipe, the first pipe connecting the first inlet and the first outflow pipe, and the second pipe connecting the first outlet and the first inflow pipe; and a first refrigerant configured to circulate between the first heat exchanger and the dry cooler, the first refrigerant flowing out of the dry cooler through the first outlet and flowing into the dry cooler through the first inlet.

[0007] During the operation of the energy storage device, the heat emitted by the electronic components inside the first housing is transferred to the dry cooler through the first heat exchanger and the first refrigerant, and then dissipated to the air outside the electrical module through the dry cooler, thereby achieving continuous heat dissipation for the electrical module. By introducing external air into the electrical module for heat dissipation, the rate of dust accumulation on the electronic components inside the electrical module is reduced, which can extend the working life of the electronic components. The dry cooler directly exchanges heat with the external air, thereby cooling the heat exchange medium inside the dry cooler. The temperature difference between the first heat exchanger and the electronic components inside the electrical module is relatively small, which further reduces the risk of condensation inside the electrical module while cooling the electronic components.

[0008] In one or more of the above optional embodiments, the energy storage device includes: a battery module including a second heat exchanger and a plurality of battery cells, the second heat exchanger being arranged on one or more sides of the plurality of battery cells, the second heat exchanger including a second heat exchanger inlet and a second heat exchanger outlet; a third pipe and a fourth pipe, the dry cooler including a second inlet and a second outlet, the third pipe connecting the second inlet and the second heat exchanger outlet, and the fourth pipe connecting the second outlet and the second heat exchanger inlet; and a second refrigerant configured to circulate between the second heat exchanger and the dry cooler, the second refrigerant flowing out of the dry cooler through a second outlet and flowing into the dry cooler through a second inlet.

[0009] In one or more of the above alternative embodiments, the second heat exchanger includes a liquid cooling plate.

[0010] In one or more of the above optional embodiments, the dry cooler, electrical module and battery module are spaced apart along a first direction, and the second heat exchanger and battery cell are arranged in the first direction.

[0011] In one or more of the above optional embodiments, the dry cooler includes: a first heat exchange tube, with a first inlet and a first outlet connected to the first heat exchange tube; and a second heat exchange tube, with a second inlet and a second outlet connected to the second heat exchange tube.

[0012] In one or more of the above optional embodiments, the dry cooler includes a first fan and a second fan, the first fan being configured to direct air from outside the energy storage device to a first heat exchange tube; and / or the second fan being configured to direct air from outside the energy storage device to a second heat exchange tube, the first fan and the second fan having different operating output power.

[0013] In one or more of the above optional embodiments, the dry cooler includes a second housing, and both the first fan and the second fan are located in the second housing. The second housing includes a first sidewall and a second sidewall opposite to each other along a second direction. The first sidewall includes a first sidewall opening, and the second sidewall includes a second sidewall opening. One of the first sidewall opening and the second sidewall opening is an air inlet opening, and the other is an air outlet opening. The dry cooler and the electrical module are spaced apart along the first direction, and the second direction is perpendicular to the first direction.

[0014] In one or more of the above optional embodiments, the dry cooler includes a first flow guide, the first flow guide and a first fan are disposed opposite to each other, the first flow guide includes a first flow guide opening and a second flow guide opening disposed at intervals along a second direction, a first heat exchange tube is located inside the first flow guide, the first flow guide opening communicates with a first side wall opening, and the second flow guide opening communicates with a second side wall opening.

[0015] In one or more of the above optional embodiments, the dry cooler includes a second flow guide, the second flow guide and the second fan are disposed opposite to each other, the second flow guide includes a third flow guide opening and a fourth flow guide opening disposed at intervals along a second direction, the second heat exchange tube is located inside the second flow guide, the third flow guide opening communicates with the first side wall opening, and the fourth flow guide opening communicates with the second side wall opening.

[0016] In one or more of the above alternative embodiments, the energy storage device includes a BMS component, which is configured to control a first fan and a second fan, respectively.

[0017] In one or more of the above alternative embodiments, the first housing is enclosed.

[0018] In one or more of the above alternative embodiments, the electrical module includes a third fan located within the first housing, the third fan being configured to drive airflow within the first housing.

[0019] In one or more of the above alternative embodiments, the third fan faces the first heat exchanger; the first heat exchanger includes a duct that extends through the first heat exchanger, and the third fan is configured to blow air into the duct.

[0020] In one or more of the above optional embodiments, the first heat exchanger includes a plurality of heat dissipation fins spaced apart, the plurality of heat dissipation fins facing the third fan.

[0021] In one or more of the above optional embodiments, the first housing includes a first bottom wall, a first heat exchanger is disposed on the first bottom wall, and an air duct extends beyond any electronic device located within the first housing in a direction perpendicular to and away from the first bottom wall.

[0022] In one or more of the above optional embodiments, the energy storage device includes a housing, an electrical module and a dry cooler located inside the housing, the housing includes a front wall and a rear wall, the front wall includes a first opening and the rear wall includes a second opening, one of the first opening and the other is an air inlet and the other is an air outlet.

[0023] In one or more of the above alternative embodiments, the energy storage device includes a partition wall located within the housing, with a dry cooler and electrical modules located on opposite sides of the partition wall.

[0024] In one or more of the above alternative embodiments, the partition wall includes a through hole through which a first conduit and a second conduit pass.

[0025] In one or more of the above optional embodiments, the first inflow pipe includes a first inflow pipe inlet located outside the first housing, and the first outflow pipe includes a first outflow pipe outlet. The first inflow pipe inlet, the first outflow pipe outlet, the first inlet, and the first outlet are located on the same side of the energy storage device.

[0026] In one or more of the above alternative embodiments, the first refrigerant includes water. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a schematic diagram of the energy storage device provided in an embodiment of this application;

[0029] Figure 2 is a schematic diagram of the structure of the energy storage device provided in the embodiment of this application without the battery module;

[0030] Figure 3 is a partial structural schematic diagram of the energy storage device provided in an embodiment of this application;

[0031] Figure 4 is a schematic diagram of the internal structure of the electrical module provided in the embodiment of this application;

[0032] Figure 5 is a structural schematic diagram of the internal structure of the electrical module provided in an embodiment of this application from another perspective;

[0033] Figure 6 is a schematic diagram of the structure of the first heat exchanger provided in an embodiment of this application;

[0034] Figure 7 is a schematic diagram of the structure of the second heat exchanger provided in an embodiment of this application;

[0035] Figure 8 is a structural schematic diagram of the dry cooler provided in an embodiment of this application;

[0036] Figure 9 is a schematic diagram of the internal structure of the dry cooler provided in the embodiment of this application;

[0037] Figure 10 is a schematic diagram of the structure of the first guide member and the second guide member provided in the embodiment of this application;

[0038] Figure 11 is a schematic diagram of the structure of the first heat exchange tube provided in an embodiment of this application.

[0039] Explanation of icon numbers:

[0040] 1. Outer shell; 11. Front wall; 11a. First opening; 12. Rear wall; 12a. Second opening; 13. Partition wall; 13a. Through hole;

[0041] 2. Electrical module; 21. First housing; 211. First bottom wall; 22. Electronic components; 23. First heat exchanger; 231. Air duct; 24. First outflow pipe; 240. First outflow pipe outlet; 25. First inflow pipe; 250. First inflow pipe inlet; 26. Third fan;

[0042] 3. Dry cooler; 31. First heat exchange tube; 311. First outlet; 312. First inlet; 32. Second heat exchange tube; 321. Second outlet; 322. Second inlet; 33. First fan; 34. Second fan; 35. First flow guide; 351. First flow guide opening; 352. Second flow guide opening; 36. Second flow guide; 361. Third flow guide opening; 362. Fourth flow guide opening; 37. Second shell; 371. First sidewall; 371a. First sidewall opening; 372. Second sidewall;

[0043] 4. First pipeline; 5. Second pipeline;

[0044] 6. Battery module; 61. Second heat exchanger; 611. Second heat exchanger inlet; 612. Second heat exchanger outlet;

[0045] 7. Third pipe; 8. Fourth pipe; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0047] The terms "first," "second," etc., used in the specification, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0048] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0049] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 80° to 90°, the two directions can be considered perpendicular; if the angle between two directions is 0° to 10°, the two directions can be considered parallel.

[0051] To address the related technical problems, this application provides an energy storage device. A detailed description is provided below with reference to the accompanying drawings.

[0052] Figure 1 is a structural schematic diagram of the energy storage device provided in the embodiment of this application; Figure 2 is a structural schematic diagram of the energy storage device provided in the embodiment of this application without battery module assembly; Figure 3 is a structural schematic diagram of the internal structure of the energy storage device provided in the embodiment of this application; Figure 4 is a structural schematic diagram of the internal structure of the electrical module provided in the embodiment of this application; Figure 8 is a structural schematic diagram of the dry cooler provided in the embodiment of this application.

[0053] Please refer to Figures 1 to 4 and Figure 8. This application provides an energy storage device, including an electrical module 2, a dry cooler 3, a first pipe 4 and a second pipe 5. The electrical module 2 includes a first housing 21, a plurality of electronic devices 22, a first heat exchanger 23 and a first inflow pipe 25 and a first outflow pipe 24 connected to the first heat exchanger 23. The first heat exchanger 23 and some of the electronic devices 22 are located inside the first housing 21.

[0054] The dry cooler 3 is located outside the first housing 21. The dry cooler 3 includes a first inlet 312 and a first outlet 311. A first pipe 4 connects the first inlet 312 and the first outlet pipe 24, and a second pipe 5 connects the first outlet 311 and the first inlet pipe 25. The dry cooler 3, the second pipe 5, the first inlet pipe 25, the first heat exchanger 23, the first outlet pipe 24, and the first pipe 4 are connected end to end in sequence to form a closed loop. The first heat exchanger 23 is provided with a flow channel (not shown) that communicates with the first outlet pipe 24 and the first inlet pipe 25.

[0055] In some embodiments, the energy storage device includes a first refrigerant (not shown), which flows out of the dry cooler 3 through a first outlet 311 and flows into the dry cooler 3 through a first inlet 312. The first refrigerant is configured to circulate between the first heat exchanger 23 and the dry cooler 3.

[0056] During the operation of the energy storage device, the heat emitted by the electronic components 22 inside the first housing 21 is transferred to the dry cooler 3 through the first heat exchanger 23 and the first refrigerant, and then dissipated to the air outside the electrical module 2 through the dry cooler 3, thereby achieving continuous heat dissipation for the electrical module 2. By introducing external air into the electrical module 2 for heat dissipation, the rate of dust accumulation on the electronic components 22 inside the electrical module 2 is reduced, which can extend the working life of the electronic components 22. The dry cooler 3 directly exchanges heat with the external air, thereby cooling the heat exchange medium inside the dry cooler 3. The temperature difference between the first heat exchanger 23 and the electronic components 22 inside the electrical module 2 is relatively small, which further reduces the risk of condensation inside the electrical module 2 while cooling the electronic components 22.

[0057] In some embodiments, one or more of the second pipe 5, the first inflow pipe 25, the first outflow pipe 24, and the first pipe 4 are equipped with a circulation pump to adjust the flow rate of the first refrigerant as needed.

[0058] In some embodiments, multiple second pipes 5, first inflow pipes 25, first outflow pipes 24 and first pipes 4 may be provided to reduce the flow resistance of the first refrigerant.

[0059] In some embodiments, the first refrigerant includes water.

[0060] As shown in Figures 1 to 3, in some embodiments, the energy storage device includes a battery module 6, a third pipe 7 and a fourth pipe 8. The battery module 6 includes a second heat exchanger 61 and multiple battery cells (not shown). The second heat exchanger 61 is arranged on one or more sides of the multiple battery cells. The second heat exchanger 61 includes a second heat exchanger inlet 611 and a second heat exchanger outlet 612.

[0061] The dry cooler 3 has a second inlet 322 and a second outlet 321. A third pipe 7 connects the second inlet 322 and the second heat exchanger outlet 612, and a fourth pipe 8 connects the second outlet 321 and the second heat exchanger inlet 611. During the operation of the energy storage device, the heat emitted by the battery module 6 is transferred to the dry cooler 3 through the second heat exchanger 61, and then dissipated to the outside air through the dry cooler 3, thereby achieving continuous heat dissipation for the battery module 6. The second heat exchanger 61 can be a plate heat exchanger composed of heat exchange plates with heat exchange channels, or a tubular heat exchanger composed of heat exchange tubes.

[0062] In some embodiments, the energy storage device includes a second refrigerant configured to circulate between a second heat exchanger 61 and a dry cooler 3, the second refrigerant flowing out of the dry cooler 3 through a second outlet 321 and flowing into the dry cooler 3 through a second inlet 322.

[0063] In some embodiments, the second refrigerant includes water.

[0064] In some embodiments, the relative positions and connections of the battery module 6, the electrical module 2, and the dry cooler 3 are shown in Figures 1 and 3.

[0065] Figure 7 is a schematic diagram of the structure of the second heat exchanger provided in an embodiment of this application.

[0066] In some embodiments, as shown in FIG7, the second heat exchanger 61 includes a liquid cooling plate, which includes a flow channel (not shown) communicating with the second heat exchanger inlet 611 and the second heat exchanger outlet 612.

[0067] As shown in Figures 1 and 3, in some embodiments, the dry cooler 3, the electrical module 2 and the battery module 6 are spaced apart along the first direction X, which can reduce the thermal impact between the battery module 6, the electrical module 2 and the dry cooler 3, so as to minimize the heat generated by the electrical module 2 during operation from being transferred to the battery module 6.

[0068] In some embodiments, the second heat exchanger 61 and the battery cell are arranged along a first direction X, which facilitates the arrangement of the third pipe 7 and the fourth pipe 8. The first direction X represents the direction indicated by the first direction X in Figures 1 to 3, as well as the direction opposite to the first direction X.

[0069] Figure 9 is a partial internal structure diagram of the dry cooler 3 provided in the embodiment of this application; Figure 11 is a structural diagram of the first heat exchange tube 31 provided in the embodiment of this application.

[0070] As shown in Figures 8, 9, and 11, in some embodiments, the dry cooler 3 includes a first heat exchange tube 31 and a second heat exchange tube 32. A first inlet 312 and a first outlet 311 are connected to the first heat exchange tube 31; a second inlet 322 and a second outlet 321 are connected to the second heat exchange tube 32. The first heat exchanger 23 and the first heat exchange tube 31 are connected to form a closed loop through the second pipe 5, the first inflow pipe 25, the first outflow pipe 24, and the first pipe 4, forming an electrical module. The second heat exchanger 61 and the second heat exchange tube 32 are connected to form another closed loop through the third pipe 7 and the fourth pipe 8. The electrical module 2 and the battery module 6 dissipate heat through different loops, reducing the thermal impact between the electrical module 2 and the battery module 6, and reducing the heat generated by the electrical module 2 during operation from being transferred to the battery module 6.

[0071] As shown in Figure 9, in some embodiments, the dry cooler 3 includes a first fan 33 and a second fan 34, the first fan 33 being configured to direct air from outside the energy storage device to the first heat exchange tube 31.

[0072] In some embodiments, the dry cooler 3 includes a second fan 34 configured to direct air from outside the energy storage device to the second heat exchange tube 32. The first fan 33 can direct air from outside the energy storage device to the first heat exchange tube 31 by blowing or drawing air; the second fan 34 can direct air from outside the energy storage device to the second heat exchange tube 32 by blowing or drawing air. By configuring the first fan 33 and the second fan 34, the airflow velocity across the surfaces of the first heat exchange tube 31 and the second heat exchange tube 32 can be increased. The first fan 33 and the second fan 34 operate with different output power, allowing them to output different power levels according to the heat dissipation requirements of the electrical module 2 and the battery module 6, thereby improving heat dissipation efficiency.

[0073] In some embodiments, the energy storage device includes a BMS (Battery Management System) component, which is configured to control a first fan 33 and a second fan 34 respectively. The BMS component adjusts the output power of the first fan 33 and the second fan 34 according to the heat dissipation requirements of the electrical module 2 and the battery module 6, thereby ensuring that the temperatures of the electrical module 2 and the battery module 6 are within their respective set ranges.

[0074] In some embodiments, the BMS component is located within the first housing 21.

[0075] As shown in Figure 8, in some embodiments, the dry cooler 3 includes a second housing 37, and the first fan 33 and the second fan 34 are both located inside the second housing 37. The second housing 37 includes a first sidewall 371 and a second sidewall 372 opposite to each other along the second direction Y. The first sidewall 371 includes a first sidewall opening 371a, and the second sidewall 372 includes a second sidewall opening (not shown). One of the first sidewall opening 371a and the second sidewall opening is an air inlet, and the other is an air outlet. The second direction Y is perpendicular to the first direction X. By setting the second housing 37, the first fan and the second fan can be better protected.

[0076] In some embodiments, the first sidewall opening 371a is an air inlet opening, and both the air outlet opening and the air inlet opening are provided with breathable filters to reduce the risk of debris from outside the energy storage device entering the interior of the second housing 37.

[0077] Figure 10 is a schematic diagram of the structure of the first guide member 35 and the second guide member 36 provided in the embodiment of this application.

[0078] As shown in Figures 8 to 10, in some embodiments, the dry cooler 3 includes a first flow guide 35, which is disposed opposite to a first fan 33. The first flow guide 35 includes a first flow guide opening 351 and a second flow guide opening 352 spaced apart along a second direction Y. A first heat exchange tube 31 is located inside the first flow guide 35. The first flow guide opening 351 communicates with a first sidewall opening 371a, and the second flow guide opening 352 communicates with a second sidewall opening. Air introduced from outside the energy storage device into the second housing 37 by the first fan 33 enters the first flow guide opening 351, flows through the first flow guide 35, and then flows out through the second flow guide opening 352 and the air outlet, thereby improving the heat exchange efficiency between the first heat exchange tube 31 located inside the first flow guide 35 and the external air.

[0079] As shown in Figures 1 to 11, in some embodiments, the first direction X, the second direction Y, and the third direction Z are all perpendicular to each other. In other embodiments, any two of the first direction X, the second direction Y, and the third direction Z can be arranged parallel to each other or intersect each other.

[0080] As shown in Figures 8 to 10, in some embodiments, the dry cooler 3 includes a second flow guide 36, which is disposed opposite to the second fan 34. The second flow guide 36 includes a third flow guide opening 361 and a fourth flow guide opening 362 spaced apart along the second direction Y. The second heat exchange tube 32 is located inside the second flow guide 36. The third flow guide opening 361 communicates with the first sidewall opening 371a, and the fourth flow guide opening 362 communicates with the second sidewall opening. Air introduced from outside the energy storage device into the second housing 37 by the second fan 34 enters the fourth flow guide opening 362, flows through the second flow guide 36, and then flows out through the third flow guide opening 361 and the fourth flow guide opening 362, thereby improving the heat exchange efficiency between the second heat exchange tube 32 located inside the second flow guide 36 and the external air.

[0081] As shown in Figure 3, in some embodiments, the first housing 21 is enclosed. Enclosed configuration can be understood as the first housing 21 not having heat dissipation holes connecting the interior and exterior of the first housing 21. This isolates the internal air of the first housing 21 from the external air, reducing the rate at which dust accumulates on the electronic components 22 within the electrical module 2 and reducing the risk of condensation within the electrical module 2, thereby relatively extending the service life of the electronic components 22.

[0082] In some embodiments, some electronic components 22 are located in the first housing 21, and sealing rings are respectively provided between the electronic components 22 and the first housing 21, between the first inflow pipe 25 and the first housing 21, and between the first outflow pipe 24 and the first housing 21, so as to further improve the airtightness of the first housing 21, reduce the rate of dust accumulation in the electronic components 22 in the electrical module 2, and reduce the risk of condensation in the electrical module 2.

[0083] As shown in Figure 4, in some embodiments, the electrical module 2 includes a third fan 26 located within the first housing 21, configured to drive airflow within the first housing 21. By providing the third fan 26, the internal airflow of the first housing 21 is circulated, thereby increasing the airflow velocity on the surface of the first heat exchanger 23 and the surface of the electronic devices 22 within the first housing 21. This accelerates the heat exchange efficiency between the internal air of the first housing 21 and the first heat exchanger 23, as well as between the internal air of the first housing 21 and the electronic devices 22 within the first housing 21.

[0084] Figure 5 is a structural schematic diagram of the electrical module 2 provided in the embodiment of this application from another perspective; Figure 6 is a structural schematic diagram of the first heat exchanger 23 provided in the embodiment of this application.

[0085] As shown in Figures 4 to 6, in some embodiments, the third fan 26 faces the first heat exchanger 23, which includes an air duct 231 that extends through it. The third fan 26 is configured to blow air into the air duct 231. The airflow direction near the first heat exchanger 23 and the third fan 26 can be referenced to the direction indicated in Figure 4. Multiple air ducts 231 can be provided to further improve the heat exchange efficiency between the internal air of the first housing 21 and the first heat exchanger 23.

[0086] In some embodiments, no electronic device 22 is provided between the first heat exchanger 23 and the third fan 26, and the air blown out by the third fan 26 can more easily enter the air duct 231.

[0087] As shown in Figures 4 to 6, in some embodiments, the first heat exchanger 23 and the third fan 26 are arranged opposite each other along the third direction Z, and the air duct 231 passes through the first heat exchanger 23 along the third direction Z.

[0088] As shown in Figures 4 and 5, in some embodiments, the first housing 21 includes a first bottom wall 211, and a first heat exchanger 23 is disposed on the first bottom wall 211. In a direction perpendicular to and away from the first bottom wall 211, the air duct 231 extends beyond any electronic device 22 located in the first housing 21, so that the air blown out from the air duct 231 flows through a larger surface area of ​​the electronic device 22 in the first housing 21, thereby improving the heat exchange efficiency between the internal air of the first housing 21 and the electronic device 22 in the first housing 21.

[0089] In some embodiments, the first heat exchanger 23 includes a plurality of heat dissipation fins spaced apart and facing the third fan 26. By providing heat dissipation fins, the surface area of ​​the first heat exchanger 23 can be increased. By limiting the relative position of the heat dissipation fins and the third fan 26, the airflow velocity on the surface of the heat dissipation fins can be accelerated, thereby improving the heat exchange efficiency between the internal air of the first housing 21 and the first heat exchanger 23.

[0090] As shown in Figure 1, in some embodiments, the energy storage device includes a housing 1, with the electrical module 2, dry cooler 3, and battery module 6 all located inside the housing 1. The housing 1 includes a front wall 11 and a rear wall 12. The front wall 11 includes a first opening 11a, and the rear wall 12 includes a second opening 12a. One of the first opening 11a and the second opening 12a is an air inlet, and the other is an air outlet. The air inlet facilitates the introduction of external air into the second housing 37 by the first fan 33 and the second fan 34, while the air outlet facilitates the flow of air from inside the second housing 37 to the outside of the energy storage device. The housing 1 provides good protection for components such as the battery module 6, electrical module 2, and dry cooler 3. The front wall 11 and rear wall 12 facilitate the maintenance of these components.

[0091] In some embodiments, the first opening 11a is an air inlet and the second opening 12a is an air outlet.

[0092] As shown in Figure 1, in some embodiments, the energy storage device includes a partition wall 13 located inside the housing 1, with the dry cooler 3 and the electrical module 2 located on opposite sides of the partition wall 13. The partition wall 13 further reduces the thermal impact between the electrical module 2 and the dry cooler 3 and provides better support for the electrical module 2.

[0093] As shown in Figure 1, in some embodiments, the partition wall includes a through hole 13a through which the first pipe 4 and the second pipe 5 pass, which helps to restrict the position of the first pipe 4 and the second pipe 5.

[0094] As shown in Figure 4, in some embodiments, the first inflow pipe 25 includes a first inflow pipe inlet 250 located outside the first housing, and the first outflow pipe 24 includes a first outflow pipe outlet 240. The first inflow pipe inlet 250, the first outflow pipe outlet 240, the first inlet 312 and the first outlet 311 are located on the same side of the energy storage device, so that the lengths of the first pipe 4 and the second pipe 5 are relatively short, which facilitates the arrangement of the wiring positions of the first pipe 4 and the second pipe 5.

[0095] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. An energy storage device, comprising: The electrical module (2) includes a first housing (21), a plurality of electronic devices (22), a first heat exchanger (23), and a first inlet pipe (25) and a first outlet pipe (24) connected to the first heat exchanger (23). The first heat exchanger (23) and some of the electronic devices (22) are located inside the first housing (21). A dry cooler (3) is located outside the first housing (21), and the dry cooler (3) includes a first inlet (312) and a first outlet (311); A first pipe (4) and a second pipe (5), wherein the first pipe (4) is connected to the first inlet (312) and the first outlet pipe (24), and the second pipe (5) is connected to the first outlet (311) and the first inlet pipe (25); A first refrigerant is configured to circulate between the first heat exchanger (23) and the dry cooler (3), the first refrigerant flowing out of the dry cooler (3) through the first outlet (311) and flowing into the dry cooler (3) through the first inlet (312).

2. The energy storage device of claim 1, wherein, The energy storage device includes: The battery module (6) includes a second heat exchanger (61) and a plurality of battery cells. The second heat exchanger (61) is arranged on one or more sides of the plurality of battery cells. The second heat exchanger (61) includes a second heat exchanger inlet (611) and a second heat exchanger outlet (612). The third pipe (7) and the fourth pipe (8) are connected. The dry cooler (3) includes a second inlet (322) and a second outlet (321). The third pipe (7) connects the second inlet (322) and the second heat exchanger outlet (612). The fourth pipe (8) connects the second outlet (321) and the second heat exchanger inlet (611). The second refrigerant is configured to circulate between the second heat exchanger (61) and the dry cooler (3), the second refrigerant flowing out of the dry cooler (3) through the second outlet (321) and flowing into the dry cooler (3) through the second inlet (322).

3. The energy storage device of claim 2, wherein, The second heat exchanger (61) includes a liquid cooling plate.

4. The energy storage device of claim 2 or 3, wherein, The dry cooler (3), the electrical module (2) and the battery module (6) are arranged at intervals along a first direction (X), and the second heat exchanger (61) and the battery cell are arranged in the first direction (X).

5. The energy storage device of any one of claims 2-4, wherein, The dry cooler (3) includes: The first heat exchange tube (31) has a first inlet (312) and a first outlet (311) connected to it. The second heat exchange tube (32) has a second inlet (322) and a second outlet (321) connected to it.

6. The energy storage device of claim 5, wherein, The dry cooler (3) includes a first fan (33) and a second fan (34), wherein the first fan (33) is configured to direct air from outside the energy storage device to the first heat exchange tube (31); And / or; the second fan (34) is configured to direct air from outside the energy storage device to the second heat exchange tube (32), and the first fan (33) and the second fan (34) have different operating output powers.

7. The energy storage device of claim 6, wherein, The dry cooler (3) includes: The second housing (37) is located where the first fan (33) and the second fan (34) are located. The second housing (37) includes a first sidewall (371) and a second sidewall (372) opposite each other along the second direction (Y). The first sidewall (371) includes a first sidewall opening (371a), and the second sidewall (372) includes a second sidewall opening. One of the first sidewall opening (371a) and the second sidewall opening is an air inlet, and the other is an air outlet. The dry cooler (3) and the electrical module (2) are spaced apart along a first direction (X), and the second direction (Y) is perpendicular to the first direction (X).

8. The energy storage device of claim 7, wherein, The dry cooler (3) includes: A first flow guide (35) is disposed opposite to the first fan (33). The first flow guide (35) includes a first flow guide opening (351) and a second flow guide opening (352) spaced apart along a second direction (Y). The first heat exchange tube (31) is located inside the first flow guide (35). The first flow guide opening (351) is connected to the first sidewall opening (371a), the The second flow guide opening (352) is connected to the second side wall opening.

9. The energy storage device of claim 8, wherein, The dry cooler (3) includes: The second flow guide (36) is disposed opposite to the second fan (34). The second flow guide (36) includes a third flow guide opening (361) and a fourth flow guide opening (362) spaced apart along a second direction (Y). The second heat exchange tube (32) is located inside the second flow guide (36). The third flow guide opening (361) is connected to the first sidewall opening (371a), and the fourth flow guide opening (362) is connected to the second sidewall opening.

10. The energy storage device of any one of claims 6 to 8, wherein, The energy storage device includes a BMS component configured to control the first fan (33) and the second fan (34) respectively.

11. The energy storage device of any one of claims 1-10, wherein, The first housing (21) is enclosed.

12. The energy storage device of any one of claims 1-11, wherein, The electrical module (2) includes a third fan (26) located within a first housing (21), the third fan (26) being configured to drive airflow within the first housing (21).

13. The energy storage device of claim 12, wherein, The third fan (26) faces the first heat exchanger (23); The first heat exchanger (23) includes a duct (231) that extends through the first heat exchanger (23), and the third fan (26) is configured to blow air into the duct (231).

14. The energy storage device of claim 13, wherein, The first heat exchanger (23) includes a plurality of heat dissipation fins spaced apart, the plurality of heat dissipation fins facing the third fan (26).

15. The energy storage device of claim 13, wherein, The first housing (21) includes a first bottom wall (211), the first heat exchanger (23) is disposed on the first bottom wall (211) in a direction perpendicular to and away from the first bottom wall (211), and the air duct (231) extends beyond any electronic device (22) located within the first housing (21).

16. The energy storage device of any one of claims 1 to 15, wherein, The energy storage device includes a housing (1), the electrical module (2) and the dry cooler (3) are located inside the housing (1). The housing (1) includes a front wall (11) and a rear wall (12). The front wall (11) includes a first opening (11a) and the rear wall (12) includes a second opening (12a). One of the first opening (11a) and the second opening (12a) is an air inlet and the other is an air outlet.

17. The energy storage device of any one of claims 1 to 16, wherein, The energy storage device includes a partition wall (13) located inside the housing (1), with the dry cooler (3) and the electrical module (2) located on opposite sides of the partition wall.

18. The energy storage device of claim 17, wherein, The partition wall includes a through hole (13a) through which the first pipe (4) and the second pipe (5) pass.

19. The energy storage device of any one of claims 1-18, wherein, The first inflow pipe (25) includes a first inflow pipe inlet (250) located outside the first housing, and the first outflow pipe (24) includes a first outflow pipe outlet (240). The first inflow pipe inlet (250), the first outflow pipe outlet (240), the first inlet (312) and the first outlet (311) are located on the same side of the energy storage device.

20. The energy storage device of any one of claims 1-19, wherein, The first refrigerant includes water.

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