Direct-cooling and direct-heating type energy storage cabinet

Abstract

The utility model relates to the technical field of energy storage cabinets, in particular to a direct cooling and direct heating type energy storage cabinet, the direct cooling and direct heating type energy storage cabinet comprises a battery pack, a battery auxiliary module and a heat exchange unit, the battery pack comprises a first liquid cooling plate, the battery auxiliary module comprises a second liquid cooling plate, and the heat exchange unit comprises a compressor, a reversing valve and a heat exchanger; during refrigeration, a refrigerant flows out of the compressor, flows through the reversing valve and the heat exchanger, then flows into the first liquid cooling plate and the second liquid cooling plate, flows out of the two liquid cooling plates after heat exchange is completed, then sequentially flows through the reversing valve and finally flows back into the compressor; during heating, after flowing out of the compressor, a refrigerant flows through the reversing valve, the first liquid cooling plate, the heat exchanger and the reversing valve and finally flows back into the compressor. The direct cooling system can synchronously dissipate heat of the battery pack, the main control box, the PCS module and the like, the temperature of the battery is controlled within a proper range, the operation efficiency of various electronic devices can be improved, and the over-temperature current limiting risk is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage cabinets, and in particular to a direct cooling and direct heating energy storage cabinet. Background Art

[0002] At present, the traditional liquid-cooled energy storage cabinet is equipped with a cooling unit and a plate heat exchanger inside. The refrigerant first cools the ethylene glycol aqueous solution through the plate heat exchanger, and then the low-temperature ethylene glycol aqueous solution flows through the liquid cooling plate of the battery pack to take away the heat in the battery pack. In this scheme, the refrigerant first exchanges heat with the ethylene glycol aqueous solution, and the ethylene glycol aqueous solution after heat exchange is used as a cooling liquid to cool the battery pack. There are many intermediate heat exchange links, low cooling efficiency, and high energy consumption. In addition, the liquid-cooled energy storage cabinet is also equipped with a main control box and other structures equipped with electrical components, which generate a lot of heat and cannot dissipate heat quickly, resulting in low operating efficiency of various electronic devices and increased risks of over-temperature and current limiting. Utility Model Content

[0003] The purpose of the present application is to provide a direct cooling and direct heating energy storage cabinet, which to a certain extent solves the technical problems existing in the prior art in that in the liquid-cooled energy storage cabinet, the refrigerant first cools the ethylene glycol aqueous solution through a plate heat exchanger, and then the low-temperature ethylene glycol aqueous solution flows through the liquid-cooled battery pack to take away the heat. There are many intermediate heat exchange links, low refrigeration efficiency, and high energy consumption. In addition, the main control box and other structures equipped with electrical components generate a large amount of heat and cannot dissipate heat quickly, resulting in low operating efficiency of various electronic devices and increasing the risk of over-temperature and current limiting.

[0004] The present application provides a direct cooling and direct heating energy storage cabinet, comprising: a battery pack, a battery auxiliary module and a heat exchange unit; wherein the battery pack comprises a first liquid cooling plate, the battery auxiliary module comprises a second liquid cooling plate, and the heat exchange unit comprises a compressor, a reversing valve and a heat exchanger;

[0005] During cooling, the compressor, the reversing valve, the heat exchanger, the first liquid cooling plate, the reversing valve and the compressor are connected in sequence to form a first circulating cooling path.

[0006] The compressor, the reversing valve, the heat exchanger, the second liquid cooling plate, the reversing valve and the compressor are sequentially connected to form a second circulating refrigeration path;

[0007] When heating, the compressor, the reversing valve, the first liquid cooling plate, the heat exchanger, the reversing valve and the compressor are connected in sequence to form a first circulation heating path, and the reversing valve is disconnected from the second liquid cooling plate.

[0008] In the above technical solution, further, the direct cooling and direct heating energy storage cabinet also includes a first heat exchange pipeline assembly and a second heat exchange pipeline assembly; wherein, the first liquid cooling plate is connected to the heat exchanger via the first heat exchange pipeline assembly; the first liquid cooling plate is connected to the reversing valve via the second heat exchange pipeline assembly.

[0009] In any of the above technical solutions, further, the direct cooling and direct heating energy storage cabinet also includes a third heat exchange pipeline assembly and a fourth heat exchange pipeline assembly; wherein, the second liquid cooling plate is connected to the heat exchanger via the third heat exchange pipeline assembly; and the second liquid cooling plate is connected to the reversing valve via the fourth heat exchange pipeline assembly.

[0010] In any of the above technical solutions, further, the direct cooling and direct heating energy storage cabinet also includes a first three-way joint, and the first heat exchange pipeline assembly and the third heat exchange pipeline assembly are connected to the heat exchanger via the first three-way joint.

[0011] In any of the above technical solutions, further, the first heat exchange pipeline assembly includes a first main pipeline, a first merging pipeline and a first branch pipeline; wherein, the first branch pipeline is connected to the first main pipeline via the first merging pipeline, and the first main pipeline is also connected to the heat exchanger via the first three-way joint; the first branch pipeline corresponds to the first liquid cooling plate one by one and is respectively connected.

[0012] In any of the above technical solutions, further, the first main pipeline is provided with a first stop valve assembly;

[0013] Any of the first branch pipelines is provided with a second stop valve assembly.

[0014] In any of the above technical solutions, further, the first stop valve assembly and the second stop valve assembly each include two first stop valves, and the two first stop valves are detachably connected.

[0015] In any of the above technical solutions, further, the first branch pipeline is provided with a first electronic expansion valve.

[0016] In any of the above technical solutions, further, the direct cooling and direct heating energy storage cabinet also includes a second three-way joint, and the second heat exchange pipeline assembly and the fourth heat exchange pipeline assembly are connected to the reversing valve via the second three-way joint.

[0017] In any of the above technical solutions, further, the second heat exchange pipeline assembly includes a second main pipeline, a second merging pipeline and a second branch pipeline connected to the second main pipeline; wherein the second branch pipeline is connected to the second main pipeline via the second merging pipeline, and the second main pipeline is also connected to the reversing valve via the second three-way joint; the second branch pipeline corresponds to the first liquid cooling plate one by one and is respectively connected.

[0018] In any of the above technical solutions, further, any of the second branch pipelines is provided with a third stop valve assembly;

[0019] The second main pipeline is provided with a fourth stop valve assembly.

[0020] In any of the above technical solutions, further, the third stop valve assembly and the fourth stop valve assembly each include two second stop valves, and the two second stop valves are detachably connected.

[0021] In any of the above technical solutions, further, the third heat exchange pipeline assembly includes a third main pipeline, a third merging pipeline and a third branch pipeline; wherein the third branch pipeline is connected to the third main pipeline via the third merging pipeline, and the third main pipeline is also connected to the heat exchanger via the first three-way joint; the third branch pipeline corresponds to the second liquid cooling plate one by one and is respectively connected.

[0022] In any of the above technical solutions, further, the third main pipeline is provided with a fifth stop valve assembly;

[0023] Any of the third branch pipelines is provided with a sixth stop valve assembly.

[0024] In any of the above technical solutions, further, the fifth stop valve assembly and the sixth stop valve assembly each include two third stop valves, and the two third stop valves are detachably connected.

[0025] In any of the above technical solutions, further, the third branch pipeline is provided with a second electronic expansion valve.

[0026] In any of the above technical solutions, further, the fourth heat exchange pipeline assembly includes a fourth main pipeline, a fourth merging pipeline and a fourth branch pipeline; wherein the fourth branch pipeline is connected to the fourth main pipeline via the fourth merging pipeline, and the fourth main pipeline is also connected to the reversing valve via the second three-way joint; the fourth branch pipeline corresponds to the second liquid cooling plate one by one and is respectively connected.

[0027] In any of the above technical solutions, further, any of the fourth branch pipelines is provided with a seventh stop valve assembly;

[0028] The fourth main pipeline is provided with an eighth stop valve assembly.

[0029] In any of the above technical solutions, further, the seventh stop valve assembly and the eighth stop valve assembly each include two fourth stop valves, and the two fourth stop valves are detachably connected.

[0030] In any of the above technical solutions, further, the fourth main line is provided with a solenoid valve.

[0031] In any of the above technical solutions, further, the number of the battery auxiliary modules is two, and one of them is a main control box, and the other is an electric energy conversion box, and along the height direction of the direct cooling and direct heating energy storage cabinet and from top to bottom, the main control box, the electric energy conversion box and the heat exchanger unit are sequentially arranged below the battery pack.

[0032] In any of the above technical solutions, further, the number of the battery packs is multiple, and forms at least one row of battery packs arranged along the height direction of the direct cooling and direct heating energy storage cabinet.

[0033] In any of the above technical solutions, further, the direct cooling and direct heating energy storage cabinet also includes a fan, and the fan is used to dissipate heat from the heat exchanger.

[0034] In any of the above technical solutions, further, the direct cooling and direct heating energy storage cabinet also includes a heating component, and the heating component is used to heat the heat exchanger.

[0035] In any of the above technical solutions, further, the direct cooling and direct heating energy storage cabinet also includes a water receiving container, and the water receiving container is arranged below the heat exchanger; and a drain pipe is connected to the bottom of the water receiving container.

[0036] In any of the above technical solutions, further, the reversing valve is a four-way reversing valve.

[0037] In any of the above technical solutions, further, the battery pack also includes a first temperature sensor, and is used to detect its temperature.

[0038] In any of the above technical solutions, further, the battery auxiliary module also includes a second temperature sensor, and is used to detect its temperature.

[0039] Compared with the prior art, the beneficial effects of this application are:

[0040] This direct cooling system can simultaneously dissipate heat for the battery pack, main control box and PCS module, also known as the power conversion box. In addition to controlling the battery temperature within an appropriate range, it can also improve the operating efficiency of various electronic devices and reduce the risk of over-temperature and current limiting.

[0041] Compared with the traditional liquid-cooled energy storage cabinet, in which the refrigerant first cools the ethylene glycol aqueous solution through a plate heat exchanger, and then the low-temperature ethylene glycol aqueous solution flows through the liquid-cooled battery pack to take away the heat, in this solution, the refrigerant directly flows through the liquid cooling plate for heat exchange, that is, to cool the battery pack, reducing the steps of heat exchange between the refrigerant and the cooling liquid, thereby greatly improving the cooling efficiency and saving more energy.

[0042] Compared with traditional liquid-cooled energy storage cabinets, when a leak occurs, the heat exchange ethylene glycol aqueous solution may cause insulation failure of the conductive system, or even cause a short circuit, leading to thermal runaway. In this solution, when the refrigerant leaks, the refrigerant can evaporate quickly and generally will not cause safety hazards such as short circuit or thermal runaway. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A heat exchange principle diagram of a direct cooling and direct heating energy storage cabinet provided in an embodiment of the present application;

[0045] Figure 2 A schematic diagram of the direct cooling and direct heating energy storage cabinet during refrigeration provided in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of the direct cooling and direct heating energy storage cabinet provided in an embodiment of the present application when heating;

[0047] Figure 4 A schematic diagram of an open direct cooling and direct heating energy storage cabinet provided in an embodiment of the present application;

[0048] Figure 5 An internal schematic diagram of a direct cooling and direct heating energy storage cabinet provided in an embodiment of the present application;

[0049] Figure 6 for Figure 5 A schematic diagram of a local enlarged structure;

[0050] Figure 7 for Figure 5 Another partially enlarged structural schematic diagram of .

[0051] Reference numerals:

[0052] 1-battery pack, 2-heat exchange unit, 201-compressor, 202-reversing valve, 2021-first interface, 2022-second interface, 2023-third interface, 2024-fourth interface, 203-heat exchanger, 3-first three-way connector, 4-first heat exchange pipeline assembly, 41-first main pipeline, 42-first confluence pipeline, 43-first branch pipeline, 5-first stop valve assembly, 51-No. 1 first stop valve, 52-No. 2 first stop valve stop valve, 6-second stop valve assembly, 61-3 first stop valve, 62-4 first stop valve, 7-first electronic expansion valve, 8-second heat exchange pipeline assembly, 81-second main pipeline, 82-second confluence pipeline, 83-second branch pipeline, 9-third stop valve assembly, 91-1 second stop valve, 92-2 second stop valve, 10-fourth stop valve assembly, 101-3 second stop valve, 102-4 second stop valve, 11- The third heat exchange pipeline assembly, 111-the third main pipeline, 112-the third converging pipeline, 113-the third branch pipeline, 12-the fifth stop valve assembly, 121-the third stop valve No. 1, 122-the third stop valve No. 2, 13-the sixth stop valve assembly, 131-the third stop valve No. 3, 132-the third stop valve No. 4, 14-the second electronic expansion valve, 15-the fourth heat exchange pipeline assembly, 151-the fourth main pipeline, 152-the fourth converging pipeline, 153-the fourth branch pipeline, 16-the seventh stop valve assembly, 161-the fourth stop valve No. 1, 162-the fourth stop valve No. 2, 17-the eighth stop valve assembly, 171-the fourth stop valve No. 3, 172-the fourth stop valve No. 4, 18-the second three-way connector, 19-the solenoid valve, 20-the main control box, 21-the power conversion box, 22-the fan, 23-the heating component, 24-the water receiving container, 25-the drain pipe, 26-the cabinet body, 27-the cabinet door. DETAILED DESCRIPTION

[0053] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0054] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0055] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0056] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0057] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] Refer to the following Figures 1 to 7 A direct cooling and direct heating energy storage cabinet according to some embodiments of the present application is described.

[0059] Embodiment 1

[0060] See also Figures 1 to 7 As shown, an embodiment of the present application provides a direct cooling and direct heating energy storage cabinet, comprising: a battery pack 1, a battery auxiliary module and a heat exchange unit 2; wherein the battery pack 1 comprises a first liquid cooling plate, the battery auxiliary module comprises a second liquid cooling plate, and the heat exchange unit 2 comprises a compressor 201, a reversing valve 202 and a heat exchanger 203;

[0061] When cooling, the compressor 201, the reversing valve 202, the heat exchanger 203, the first liquid cooling plate, the reversing valve 202 and the compressor 201 are connected in sequence to form a first circulating cooling path.

[0062] The compressor 201, the reversing valve 202, the heat exchanger 203, the second liquid cold plate, the reversing valve 202 and the compressor 201 are connected in sequence to form a second circulating refrigeration path;

[0063] When heating, the compressor 201, the reversing valve 202, the first liquid cooling plate, the heat exchanger 203, the reversing valve 202 and the compressor 201 are connected in sequence to form a first circulation heating path, and the reversing valve 202 is disconnected from the second liquid cooling plate.

[0064] Based on the structure described above, it can be seen that the working process of the direct cooling and direct heating energy storage cabinet provided in this application is as follows:

[0065] like Figure 2 As shown, when cooling, after the refrigerant flows out of the compressor 201, it flows through the reversing valve 202 and the heat exchanger 203 in sequence, and then flows into the first liquid cooling plate and the second liquid cooling plate respectively. After the heat exchange of the refrigerant is completed, it flows out of the first liquid cooling plate and the second liquid cooling plate, and then flows through the reversing valve 202 in sequence, and finally flows back into the compressor 201;

[0066] like Figure 3 As shown, when heating, after the refrigerant flows out of the compressor 201, it flows into the first liquid cooling plate through the reversing valve 202 without flowing through the second liquid cooling plate, and after the heat exchange of the refrigerant is completed, it flows out of the first liquid cooling plate, and then flows through the heat exchanger 203 and the reversing valve 202 in sequence, and finally flows back into the compressor 201.

[0067] It can be seen that the direct cooling and direct heating energy storage cabinet provided by the present application can simultaneously directly cool the battery pack 1 and the battery auxiliary modules such as the main control box 20 and the power conversion box 21. That is to say, compared with the traditional liquid-cooled energy storage cabinet, the refrigerant first cools the ethylene glycol aqueous solution through the plate heat exchanger 203, and then the low-temperature ethylene glycol aqueous solution flows through the liquid-cooled battery pack 1 to take away the heat. In this scheme, the refrigerant directly flows through the liquid cooling plate for heat exchange, that is, the battery pack 1 is cooled, which reduces the steps of heat exchange between the refrigerant and the cooling liquid, thereby greatly improving the cooling efficiency and saving more energy. Moreover, compared with the traditional liquid-cooled energy storage cabinet, when leakage occurs, the heat exchanged ethylene glycol aqueous solution may cause insulation failure of the conductive system, and even cause a short circuit, resulting in thermal runaway. In this scheme, when the refrigerant leaks, the refrigerant can evaporate quickly, and generally will not cause safety hazards of short circuit or thermal runaway.

[0068] In this embodiment, preferably, Figures 1 to 6 As shown, the direct cooling and direct heating energy storage cabinet also includes a first heat exchange pipeline assembly 4 and a second heat exchange pipeline assembly 8; wherein the first liquid cooling plate is connected to the heat exchanger 203 via the first heat exchange pipeline assembly 4; the first liquid cooling plate is connected to the reversing valve 202 via the second heat exchange pipeline assembly 8.

[0069] According to the structure described above, especially when there are multiple battery packs 1, by designing the reasonable arrangement of the first heat exchange pipeline assembly 4 and the second heat exchange pipeline assembly 8, multiple battery packs 1 can be connected to the heat exchange unit 2 synchronously, and synchronous heat exchange of multiple battery packs 1, such as cooling or heating, can be achieved.

[0070] In this embodiment, preferably, Figures 1 to 6As shown, the direct cooling and direct heating energy storage cabinet also includes a third heat exchange pipeline assembly 11 and a fourth heat exchange pipeline assembly 15; wherein the second liquid cooling plate is connected to the heat exchanger 203 via the third heat exchange pipeline assembly 11; the second liquid cooling plate is connected to the reversing valve 202 via the fourth heat exchange pipeline assembly 15.

[0071] According to the structure described above, especially when there are multiple battery auxiliary modules, by designing the reasonable arrangement of the third heat exchange pipeline assembly 11 and the fourth heat exchange pipeline assembly 15, multiple battery auxiliary modules can be synchronously connected to the heat exchanger unit 2, so that synchronous heat exchange of multiple battery packs 1, such as cooling or heating, can be achieved.

[0072] In this embodiment, preferably, Figures 1 to 3 As shown, the direct cooling and direct heating energy storage cabinet further includes a first three-way joint 3 , and the first heat exchange pipeline assembly 4 and the third heat exchange pipeline assembly 11 are connected to the heat exchanger 203 via the first three-way joint 3 .

[0073] According to the structure described above, it can be known that the first three-way joint 3 can be used to simultaneously realize the simultaneous communication between the first heat exchange pipeline assembly 4 and the third heat exchange pipeline assembly 11 and the heat exchanger 203 .

[0074] In this embodiment, preferably, Figures 1 to 3 As shown, the direct cooling and direct heating energy storage cabinet further includes a second three-way joint 18 , and the second heat exchange pipeline assembly 8 and the fourth heat exchange pipeline assembly 15 are connected to the reversing valve 202 via the second three-way joint 18 .

[0075] According to the structure described above, it can be known that the second three-way joint 18 can be used to simultaneously realize the simultaneous communication between the second heat exchange pipeline assembly 8 and the fourth heat exchange pipeline assembly 15 and the reversing valve 202 .

[0076] In this embodiment, preferably, Figures 1 to 6 As shown, the first heat exchange pipeline assembly 4 includes a first main pipeline 41, a first merging pipeline 42 and a first branch pipeline 43; wherein the first branch pipeline 43 is connected to the first main pipeline 41 via the first merging pipeline 42, and the first main pipeline 41 is also connected to the heat exchanger 203 via the first three-way joint 3; the first branch pipeline 43 corresponds to the first liquid cooling plate one by one and is respectively connected.

[0077] Further, preferably, Figures 1 to 6 As shown, the second heat exchange pipeline assembly 8 includes a second main pipeline 81, a second merging pipeline 82 and a second branch pipeline 83 connected to the second main pipeline 81; wherein the second branch pipeline 83 is connected to the second main pipeline 81 via the second merging pipeline 82, and the second main pipeline 81 is also connected to the reversing valve 202 via the second three-way joint 18; the second branch pipeline 83 corresponds to the first liquid cooling plate one by one and is respectively connected.

[0078] According to the structure described above, by designing the first branch pipeline 43 and the second branch pipeline 83, and making them connected with the inlet end and the outlet end of the first liquid cooling plate respectively, it can be ensured that the refrigerant can flow into the liquid cooling plate of each battery pack 1 for synchronous heat exchange, and the aforementioned first converging pipeline 42 and the second converging pipeline 82 respectively play the role of connecting each first branch pipeline 43 and each second branch pipeline 83, that is, play the role of confluence, which helps to save pipelines, reduce occupied space, and improve energy density; the first main pipeline 41 and the second main pipeline 81 respectively play the role of connecting the heat exchanger 203 and the reversing valve 202.

[0079] In this embodiment, preferably, Figures 1 to 3 , Figure 6 As shown, the first main pipeline 41 is provided with a first stop valve assembly 5;

[0080] Any first branch pipeline 43 is provided with a second stop valve assembly 6 .

[0081] According to the structure described above, when a problem occurs in the heat exchange system, the first stop valve assembly 5 and the second stop valve assembly 6 can be used to disconnect the battery pack 1 and the first heat exchange pipeline assembly 4 from the heat exchange system to cut off the refrigerant so that the refrigerant does not leak, thereby facilitating the repair of the fault point.

[0082] In this embodiment, preferably, Figures 1 to 3 , Figure 6 As shown, the first stop valve assembly 5 and the second stop valve assembly 6 each include two first stop valves. In order to distinguish the different first stop valves mentioned above, they are named as follows: the two stop valves included in the first stop valve assembly 5 are first stop valve No. 1 51 and first stop valve No. 2 52, and the two stop valves included in the second stop valve assembly 6 are first stop valve No. 3 61 and first stop valve No. 4 62, wherein, first stop valve No. 1 51 and first stop valve No. 2 52 are detachably connected, and first stop valve No. 3 61 and first stop valve No. 4 62 are detachably connected.

[0083] According to the structure described above, the two first stop valves in the first stop valve assembly 5 and the second stop valve assembly 6 are designed to be detachable structures, which is convenient for disconnecting the two first stop valves, that is, the pipelines connected to the two first stop valves are independent of each other, and the two first stop valves can cut off the ends of their respective pipelines, which can effectively avoid leakage and facilitate maintenance or replacement operations.

[0084] It should be noted that: currently, two stop valves are often used in a butt connection. The two stop valves are used in pairs and in a butt connection. The stop valves at both ends can independently control the on-off of the pipeline. Therefore, the assembly structure of the two stop valves will not be described in detail here.

[0085] In this embodiment, preferably, Figures 1 to 3 , Figure 6 As shown, any second branch pipeline 83 is provided with a third stop valve assembly 9;

[0086] The second main line 81 is provided with a fourth stop valve assembly 10 .

[0087] According to the structure described above, when a problem occurs in the heat exchange system, the third stop valve assembly 9 and the fourth stop valve assembly 10 can be used to disconnect the battery pack 1 and the second heat exchange pipeline assembly 8 from the heat exchange system to cut off the refrigerant so that the refrigerant does not leak, making it easier to repair the fault point.

[0088] In this embodiment, preferably, Figures 1 to 3 , Figure 6 As shown, the third stop valve assembly 9 and the fourth stop valve assembly 10 each include two second stop valves. In order to distinguish the different second stop valves mentioned above, they are named as follows: the two stop valves included in the third stop valve assembly 9 are second stop valve No. 1 91 and second stop valve No. 2 92, and the two stop valves included in the fourth stop valve assembly 10 are second stop valve No. 3 101 and second stop valve No. 4 102, wherein second stop valve No. 1 91 and second stop valve No. 2 92 are detachably connected, and second stop valve No. 3 101 and second stop valve No. 4 102 are detachably connected.

[0089] According to the structure described above, the two third stop valves in the third stop valve assembly 9 and the fourth stop valve assembly 10 are designed to be detachable, that is, the pipelines connected to the two third stop valves are independent of each other, and the two third stop valves can cut off the ends of their respective pipelines, which can effectively avoid leakage and facilitate maintenance or replacement operations.

[0090] It can be seen that the structure of the two detachable first stop valves in the first stop valve assembly 5, the second stop valve assembly 6, the third stop valve assembly 9 and the fourth stop valve assembly 10 completely divides the battery pack 1, the first heat exchange pipeline assembly 4, the second heat exchange pipeline assembly 8 and the heat exchange unit 2 into independent structures, and ensures that each section does not leak refrigerant, which is particularly convenient for repairing or replacing the battery pack.

[0091] In this embodiment, preferably, Figures 1 to 3 , Figure 6 As shown, the first branch pipeline 43 is provided with a first electronic expansion valve 7, which can adjust the flow rate of the refrigerant in each branch pipeline, so as to accurately control the temperature of each battery pack 1, reduce the temperature difference between the battery packs 1, ensure the temperature consistency of each battery pack 1, and improve the overall cycle life of the energy storage cabinet.

[0092] In this embodiment, preferably, Figures 1 to 3 , Figure 6 As shown, the third heat exchange pipeline assembly 11 includes a third main pipeline 111, a third merging pipeline 112 and a third branch pipeline 113; wherein the third branch pipeline 113 is connected to the third main pipeline 111 via the third merging pipeline 112, and the third main pipeline 111 is also connected to the heat exchanger 203 via the first three-way joint 3; the third branch pipeline 113 corresponds to the second liquid cooling plate one by one and is respectively connected.

[0093] Further, preferably, Figures 1 to 3 , Figure 7 As shown, the fourth heat exchange pipeline assembly 15 includes a fourth main pipeline 151, a fourth merging pipeline 152 and a fourth branch pipeline 153; wherein the fourth branch pipeline 153 is connected to the fourth main pipeline 151 via the fourth merging pipeline 152, and the fourth main pipeline 151 is also connected to the reversing valve 202 via the second three-way joint 18; the fourth branch pipeline 153 corresponds to the second liquid cooling plate one by one and is respectively connected.

[0094] According to the structure described above, by designing the third branch pipeline 113 and the fourth branch pipeline 153 and making them connected with the inlet and outlet ends of the liquid cooling plate respectively, it can be ensured that the refrigerant can flow to the second liquid cooling plate of each battery auxiliary module for synchronous heat exchange, and the aforementioned third converging pipeline 112 and fourth converging pipeline 152 respectively play the role of connecting each third branch pipeline 113 and each fourth branch pipeline 153, that is, play the role of confluence, which helps to save pipelines, reduce occupied space, and improve energy density; the third main pipeline 111 and the fourth main pipeline 151 respectively play the role of connecting the heat exchanger 203 and the reversing valve 202.

[0095] In this embodiment, preferably, Figures 1 to 3 , Figure 7 As shown, the third main line 111 is provided with a fifth stop valve assembly 12;

[0096] Any third branch pipeline 113 is provided with a sixth stop valve assembly 13 .

[0097] According to the structure described above, when a problem occurs in the heat exchange system, the fifth stop valve assembly 12 and the sixth stop valve assembly 13 can be used to cut off the third heat exchange pipeline assembly 11 from the heat exchange system to cut off the refrigerant so that the refrigerant does not leak, making it easier to repair the fault point.

[0098] In this embodiment, preferably, Figures 1 to 3 , Figure 7As shown, the fifth stop valve assembly 12 and the sixth stop valve assembly 13 each include two third stop valves. In order to distinguish the different third stop valves mentioned above, they are named as follows: the two stop valves included in the fifth stop valve assembly 12 are third stop valve No. 1 121 and third stop valve No. 2 122, and the two stop valves included in the sixth stop valve assembly 13 are third stop valve No. 3 131 and third stop valve No. 4 132, wherein third stop valve No. 1 121 and third stop valve No. 2 122 are detachably connected, and third stop valve No. 3 131 and third stop valve No. 4 132 are detachably connected.

[0099] According to the structure described above, the two third stop valves in the third stop valve assembly 9 and the fourth stop valve assembly 10 are designed to be detachable, that is, the pipelines connected to the two third stop valves are independent of each other, and the two third stop valves can cut off the ends of their respective pipelines, which can effectively avoid leakage and facilitate maintenance or replacement operations.

[0100] In this embodiment, preferably, Figures 1 to 3 , Figure 7 As shown, any fourth branch pipeline 153 is provided with a seventh stop valve assembly 16;

[0101] The fourth main line 151 is provided with an eighth shut-off valve assembly 17 .

[0102] According to the structure described above, when a problem occurs in the heat exchange system, the seventh stop valve assembly 16 and the eighth stop valve assembly 17 can be used to disconnect the battery pack 1 and the fourth heat exchange pipeline assembly 15 from the heat exchange system to cut off the refrigerant so that the refrigerant does not leak, making it easier to repair the fault point.

[0103] In this embodiment, preferably, Figures 1 to 3 , Figure 7 As shown, the seventh stop valve assembly 16 and the eighth stop valve assembly 17 each include two fourth stop valves. In order to distinguish the different fourth stop valves mentioned above, they are named as follows: the two stop valves included in the seventh stop valve assembly 16 are fourth stop valve No. 1 161 and fourth stop valve No. 2 162, and the two stop valves included in the eighth stop valve assembly 17 are fourth stop valve No. 3 171 and fourth stop valve No. 4 172, wherein fourth stop valve No. 1 161 and fourth stop valve No. 2 162 are detachably connected, and fourth stop valve No. 3 171 and fourth stop valve No. 4 172 are detachably connected.

[0104] According to the structure described above, the two fourth stop valves in the seventh stop valve assembly 16 and the eighth stop valve assembly 17 are designed to be detachable structures, that is, the pipelines connected to the two fourth stop valves are independent of each other, and the two fourth stop valves can cut off the ends of their respective pipelines, which can effectively avoid leakage and facilitate maintenance or replacement operations.

[0105] It can be seen that the fifth stop valve assembly 12, the sixth stop valve assembly 13, the seventh stop valve assembly 16 and the eighth stop valve assembly 17 all include a structure of two detachable third stop valves, thereby completely dividing the battery pack 1, the third heat exchange pipeline assembly 11, the fourth heat exchange pipeline assembly 15 and the heat exchanger unit 2 into independent structures, and ensuring that each section does not leak refrigerant, which is particularly convenient for repairing or replacing each battery auxiliary module such as the main control box 20 and the power conversion box 21.

[0106] In this embodiment, preferably, Figures 1 to 3 , Figure 7 As shown, the third branch pipeline 113 is provided with a second electronic expansion valve 14, which can adjust the flow rate of the refrigerant in each branch pipeline, thereby accurately controlling the temperature of the auxiliary modules of each battery pack 1.

[0107] In this embodiment, preferably, Figures 1 to 3 , Figure 7 As shown, there are two battery auxiliary modules, one of which is the main control box 20, and the other is the power conversion box 21, and along the height direction of the direct cooling and direct heating energy storage cabinet and from top to bottom, the main control box 20, the power conversion box 21 and the heat exchanger unit 2 are arranged sequentially below the battery pack 1.

[0108] According to the structure described above, the direct cooling system can simultaneously dissipate heat for the battery pack 1, the main control box 20 and the PCS module, i.e., the power conversion box 21. In addition to controlling the battery temperature within an appropriate range, it can also improve the operating efficiency of various electronic devices and reduce the risk of over-temperature and current limiting.

[0109] Moreover, the heat exchanger unit 2 is installed at the bottom, and the main control box 20 containing electrical components and the electric energy conversion box 21 are installed above. In this way, once the heat exchanger unit 2 leaks, the leaked refrigerant will not flow to the control box and the electric energy conversion box 21 above under the action of gravity, and will not cause damage to the electrical components, which is safer and more reliable.

[0110] It should be noted that: for the main control box 20 and the power conversion box 21, two third branch pipelines 113 and one third main pipeline 111 need to be provided, and the two third branch pipelines 113 are respectively connected to the corresponding main control box 20 and the power conversion box 21, and the two third branch pipelines 113 are also connected to the third main pipeline 111, and correspondingly, two fourth branch pipelines 153 and one fourth main pipeline 151 need to be provided, and the two fourth branch pipelines 153 are respectively connected to the corresponding main control box 20 and the power conversion box 21, and the two fourth branch pipelines 153 are also connected to the fourth main pipeline 151, and each of the aforementioned third branch pipelines 113 is provided with a second electronic expansion valve 14 and a sixth stop valve assembly 13, and each fourth branch pipeline 153 is provided with a seventh stop valve assembly 16.

[0111] It can be seen that the number of the third branch pipeline 113 and the fourth branch pipeline 153 needs to be equal to the number of battery auxiliary modules and correspond one to one. When the number of battery auxiliary modules is adjusted, the number of the third branch pipeline 113, the fourth branch pipeline 153, the second electronic expansion valve 14, the sixth stop valve assembly 13 and the seventh stop valve assembly 16 is also adjusted accordingly.

[0112] In this embodiment, preferably, Figure 4 and Figure 5 As shown, there are multiple battery packs 1, and they form a row of battery packs 1 arranged along the height direction of the direct cooling and direct heating energy storage cabinet.

[0113] According to the structure described above, the battery packs 1 are arranged in columns, which fully utilizes the space in the height direction and has a higher degree of integration. Furthermore, preferably, along the height direction of the direct cooling and direct heating energy storage cabinet and from top to bottom, the main control box 20, the power conversion box 21 and the heat exchanger unit 2 are sequentially arranged below this column of battery packs 1.

[0114] Further, preferably, a first liquid cooling plate is provided at the bottom of each battery pack 1, and each first liquid cooling plate is equipped with a first branch pipe 43 and a second branch pipe 83, and when the number of first liquid cooling plates is multiple, the number of first branch pipes 43 and second branch pipes 83 are both multiple, and the multiple first branch pipes 43 share a first main pipe 41, and the multiple second branch pipes 83 share a second main pipe 81.

[0115] It should be noted that: it is not limited to one column of battery packs 1 in the present application, but can also be multiple columns of battery packs 1, and each column of battery packs 1 is equipped with a first heat exchange pipeline assembly 4 and a second heat exchange pipeline assembly 8, and the first heat exchange pipeline assembly 4 of each column can be connected together through a first connecting pipeline, and then the first connecting pipeline is connected to the heat exchanger 203, and the second heat exchange pipeline assembly 8 of each column is connected together through a second connecting pipeline, and then the second connecting pipeline is connected to the reversing valve 202. Of course, it is not limited to this, and can also be selected according to actual needs.

[0116] In addition, the number of battery packs 1 in the present application is not limited to multiple, but can also be one. When the number of battery packs 1 is one, the specific design is based on actual needs.

[0117] In addition, in the present embodiment, each battery pack 1 is equipped with a first liquid cooling plate, and the first liquid cooling plate is located at the bottom of the battery pack 1. Of course, it is not limited to this. Each battery pack 1 can also be equipped with multiple first liquid cooling plates. In addition, the position of the first liquid cooling plate is not limited to being set at the bottom of the battery pack 1, but can also be designed at the top or middle position, or on the side, or at other positions, depending on actual needs.

[0118] In this embodiment, preferably, Figures 1 to 3 As shown, the direct cooling and direct heating energy storage cabinet further includes a fan 22 , and the fan 22 is used to dissipate heat from the heat exchanger 203 .

[0119] According to the structure described above, when the high-temperature refrigerant flows through the heat exchanger 203, the fan 22 can be used to dissipate heat from the heat exchanger 203 to accelerate the cooling of the refrigerant.

[0120] In this embodiment, preferably, Figures 1 to 3 As shown, the direct cooling and direct heating energy storage cabinet further includes a heating component 23 , and the heating component 23 is used to heat the heat exchanger 203 .

[0121] According to the structure described above, when the low-temperature refrigerant flows through the heat exchanger 203, frost will form on the outer wall of the heat exchanger 203. Therefore, the heating component 23 can be used to heat the outer wall of the heat exchanger 203 to melt the frost.

[0122] In this embodiment, preferably, Figures 1 to 3 As shown, the direct cooling and direct heating energy storage cabinet further includes a water receiving container 24 , and the water receiving container 24 is arranged below the heat exchanger 203 ; a drain pipe 25 is connected to the bottom of the water receiving container 24 .

[0123] According to the structure described above, when the outer wall of the heat exchanger 203 is heated by the heating component 23, the frost on the outer wall of the heat exchanger 203 melts and flows into the water receiving container 24 below, and is discharged to the outside of the direct cooling and direct heating energy storage cabinet through the drain pipe 25, which is safer and more reliable.

[0124] In this embodiment, preferably, Figures 1 to 3 As shown, the reversing valve 202 is a four-way reversing valve 202, and is formed with a first interface 2021, a second interface 2022, a third interface 2023 and a fourth interface 2024, the first interface 2021 is connected to the inlet end of the compressor 201, the second interface 2022 is connected to the liquid cooling plate, the third interface 2023 is connected to the outlet end of the compressor 201, and the fourth interface 2024 is connected to the heat exchanger 203;

[0125] The first three-way joint 3 forms a fifth interface, a sixth interface and a seventh interface, the fifth interface is connected to the heat exchanger 203, the sixth interface is connected to the first main line 41, and the seventh interface is connected to the third main line 111; the second three-way joint 18 forms an eighth interface, a ninth interface and a tenth interface, the eighth interface is connected to the reversing valve 202, the ninth interface is connected to the second main line 81, and the tenth interface is connected to the fourth main line 151.

[0126] When cooling, the outlet end of the compressor 201, the third interface 2023 of the reversing valve 202, the fourth interface 2024 of the reversing valve 202, the heat exchanger 203, the fifth interface of the first three-way joint 3, the sixth interface of the first three-way joint 3, the first liquid cold plate, the ninth interface of the second three-way joint 18, the eighth interface of the second three-way joint 18, the second interface 2022 of the reversing valve 202, the first interface 2021 of the reversing valve 202 and the inlet end of the compressor 201 are connected in sequence to form a first circulating refrigeration path, that is, the refrigerant can circulate along the first circulating refrigeration path to directly cool the battery pack 1 through the first liquid cold plate;

[0127] The outlet end of the compressor 201, the third interface 2023 of the reversing valve 202, the fourth interface 2024 of the reversing valve 202, the heat exchanger 203, the fifth interface of the first three-way joint 3, the seventh interface of the first three-way joint 3, the second liquid cold plate, the ninth interface of the second three-way joint 18, the eighth interface of the second three-way joint 18, the second interface 2022 of the reversing valve 202, the first interface 2021 of the reversing valve 202 and the inlet end of the compressor 201 are sequentially connected to form a second circulating refrigeration path, that is, the refrigerant can circulate along the second circulating refrigeration path to directly cool the battery auxiliary module through the second liquid cold plate;

[0128] When heating, the outlet end of the compressor 201, the third interface 2023 of the reversing valve 202, the second interface 2022 of the reversing valve 202, the eighth interface of the second three-way joint 18, the ninth interface of the second three-way joint 18, the first liquid cold plate, the heat exchanger 203, the fourth interface 2024 of the reversing valve 202, the first interface 2021 of the reversing valve 202 and the inlet end of the compressor 201 are connected in sequence to form a circulating heating path, and the eighth interface of the second three-way joint 18 and the tenth interface of the second three-way joint 18 are in a disconnected state.

[0129] Further, preferably, the aforementioned second heat exchange pipeline assembly 8 is provided on the pipeline connecting the second interface 2022 and the liquid cooling plate.

[0130] In this embodiment, preferably, Figure 5 As shown, the direct cooling and direct heating energy storage cabinet provided in the present application also includes a cabinet body 26, and the aforementioned battery pack 1, main control box 20, power conversion box 21, heat exchange unit 2, first heat exchange pipeline assembly 4 and second heat exchange pipeline assembly 8 are all arranged in the cabinet body 26.

[0131] Furthermore, preferably, the cabinet body 26 is also provided with an openable cabinet door 27 for easy maintenance.

[0132] In summary, the detailed process of cooling and heating of the heat exchange structure in the direct cooling and direct heating energy storage cabinet provided in this application is as follows:

[0133] When cooling, the third interface 2023 of the reversing valve 202 is connected to the fourth interface 2024 of the reversing valve 202, and the second interface 2022 of the reversing valve 202 is connected to the first interface 2021 of the reversing valve 202. After the refrigerant flows out from the outlet of the compressor 201, it flows through the third interface 2023 of the reversing valve 202, the fourth interface 2024 of the reversing valve 202 and the heat exchanger 203 in sequence, and then flows into the liquid cooling plate. The refrigerant evaporates and absorbs heat, thereby dissipating heat for the battery. After the heat exchange of the refrigerant is completed, it flows out from the liquid cooling plate, and then flows through the second interface 2022 of the reversing valve 202 and the first interface 2021 of the reversing valve 202 in sequence, and finally flows back into the compressor 201.

[0134] When heating, the third interface 2023 of the reversing valve 202 is connected to the second interface 2022 of the reversing valve 202, and the fourth interface 2024 of the reversing valve 202 is connected to the first interface 2021 of the reversing valve 202. After the refrigerant flows out of the compressor 201, it passes through the third interface 2023 of the reversing valve 202 and the second interface 2022 of the reversing valve 202 in sequence, and then flows into the liquid cooling plate to condense and release heat to heat the battery. After the heat exchange of the refrigerant is completed, it flows out of the liquid cooling plate, and then flows through the heat exchanger 203, the fourth interface 2024 of the reversing valve 202 and the first interface 2021 of the reversing valve 202 in sequence, and finally flows back into the compressor 201.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A direct cooling and direct heating energy storage cabinet, characterized in that: include: A battery pack, a battery auxiliary module and a heat exchange unit; wherein the battery pack includes a first liquid cooling plate, the battery auxiliary module includes a second liquid cooling plate, and the heat exchange unit includes a compressor, a reversing valve and a heat exchanger; During cooling, the compressor, the reversing valve, the heat exchanger, the first liquid cooling plate, the reversing valve and the compressor are connected in sequence to form a first circulating cooling path. The compressor, the reversing valve, the heat exchanger, the second liquid cooling plate, the reversing valve and the compressor are sequentially connected to form a second circulating refrigeration path; When heating, the compressor, the reversing valve, the first liquid cooling plate, the heat exchanger, the reversing valve and the compressor are connected in sequence to form a first circulation heating path, and the reversing valve is disconnected from the second liquid cooling plate.

2. The direct cooling and direct heating energy storage cabinet according to claim 1, characterized in that: The direct cooling and direct heating energy storage cabinet also includes a first heat exchange pipeline assembly and a second heat exchange pipeline assembly; wherein the first liquid cooling plate is connected to the heat exchanger via the first heat exchange pipeline assembly; the first liquid cooling plate is connected to the reversing valve via the second heat exchange pipeline assembly.

3. The direct cooling and direct heating energy storage cabinet according to claim 2 is characterized in that: The direct cooling and direct heating energy storage cabinet also includes a third heat exchange pipeline assembly and a fourth heat exchange pipeline assembly; wherein the second liquid cooling plate is connected to the heat exchanger via the third heat exchange pipeline assembly; and the second liquid cooling plate is connected to the reversing valve via the fourth heat exchange pipeline assembly.

4. The direct cooling and direct heating energy storage cabinet according to claim 3 is characterized in that: The direct cooling and direct heating energy storage cabinet also includes a first three-way joint, and the first heat exchange pipeline assembly and the third heat exchange pipeline assembly are connected to the heat exchanger via the first three-way joint.

5. The direct cooling and direct heating energy storage cabinet according to claim 4 is characterized in that: The first heat exchange pipeline assembly includes a first main pipeline, a first merging pipeline and a first branch pipeline; wherein the first branch pipeline is connected to the first main pipeline via the first merging pipeline, and the first main pipeline is also connected to the heat exchanger via the first three-way joint; the first branch pipeline corresponds to the first liquid cooling plate one by one and is respectively connected.

6. The direct cooling and direct heating energy storage cabinet according to claim 5, characterized in that: The first main pipeline is provided with a first stop valve assembly; Any of the first branch pipelines is provided with a second stop valve assembly.

7. The direct cooling and direct heating energy storage cabinet according to claim 6, characterized in that: The first stop valve assembly and the second stop valve assembly each include two first stop valves, and the two first stop valves are detachably connected.

8. The direct cooling and direct heating energy storage cabinet according to claim 6, characterized in that: The first branch pipeline is provided with a first electronic expansion valve.

9. The direct cooling and direct heating energy storage cabinet according to claim 3, characterized in that: The direct cooling and direct heating energy storage cabinet also includes a second three-way joint, and the second heat exchange pipeline assembly and the fourth heat exchange pipeline assembly are connected to the reversing valve via the second three-way joint.

10. The direct cooling and direct heating energy storage cabinet according to claim 9, characterized in that: The second heat exchange pipeline assembly includes a second main pipeline, a second merging pipeline, and a second branch pipeline connected to the second main pipeline; wherein the second branch pipeline is connected to the second main pipeline via the second merging pipeline, and the second main pipeline is also connected to the reversing valve via the second three-way joint; the second branch pipeline corresponds to the first liquid cooling plate one by one and is respectively connected.

11. The direct cooling and direct heating energy storage cabinet according to claim 10, characterized in that: Any of the second branch pipelines is provided with a third stop valve assembly; The second main pipeline is provided with a fourth stop valve assembly.

12. The direct cooling and direct heating energy storage cabinet according to claim 11, characterized in that: The third stop valve assembly and the fourth stop valve assembly each include two second stop valves, and the two second stop valves are detachably connected.

13. The direct cooling and direct heating energy storage cabinet according to claim 4, characterized in that: The third heat exchange pipeline assembly includes a third main pipeline, a third merging pipeline and a third branch pipeline; wherein the third branch pipeline is connected to the third main pipeline via the third merging pipeline, and the third main pipeline is also connected to the heat exchanger via the first three-way joint; the third branch pipeline corresponds to the second liquid cooling plate one by one and is respectively connected.

14. The direct cooling and direct heating energy storage cabinet according to claim 13, characterized in that: The third main pipeline is provided with a fifth stop valve assembly; Any of the third branch pipelines is provided with a sixth stop valve assembly.

15. The direct cooling and direct heating energy storage cabinet according to claim 14, characterized in that: The fifth stop valve assembly and the sixth stop valve assembly each include two third stop valves, and the two third stop valves are detachably connected.

16. The direct cooling and direct heating energy storage cabinet according to claim 13, characterized in that: The third branch pipeline is provided with a second electronic expansion valve.

17. The direct cooling and direct heating energy storage cabinet according to claim 9, characterized in that: The fourth heat exchange pipeline assembly includes a fourth main pipeline, a fourth merging pipeline and a fourth branch pipeline; wherein the fourth branch pipeline is connected to the fourth main pipeline via the fourth merging pipeline, and the fourth main pipeline is also connected to the reversing valve via the second three-way joint; the fourth branch pipeline corresponds to the second liquid cooling plate one by one and is respectively connected.

18. The direct cooling and direct heating energy storage cabinet according to claim 17, characterized in that: Any of the fourth branch pipelines is provided with a seventh stop valve assembly; The fourth main pipeline is provided with an eighth stop valve assembly.

19. The direct cooling and direct heating energy storage cabinet according to claim 18, characterized in that: The seventh stop valve assembly and the eighth stop valve assembly each include two fourth stop valves, and the two fourth stop valves are detachably connected.

20. The direct cooling and direct heating energy storage cabinet according to claim 17, characterized in that: The fourth main line is provided with a solenoid valve.

21. The direct cooling and direct heating energy storage cabinet according to claim 1, characterized in that: There are two battery auxiliary modules, one of which is a main control box, and the other is an electric energy conversion box. In addition, along the height direction of the direct cooling and direct heating energy storage cabinet and from top to bottom, the main control box, the electric energy conversion box and the heat exchanger unit are sequentially arranged below the battery pack.

22. The direct cooling and direct heating energy storage cabinet according to any one of claims 1 to 21, characterized in that: The number of the battery packs is plural, and the battery packs form at least one row of battery packs arranged along the height direction of the direct cooling and direct heating energy storage cabinet; and / or The direct cooling and direct heating energy storage cabinet further includes a fan, and the fan is used to dissipate heat from the heat exchanger; and / or The direct cooling and direct heating energy storage cabinet further includes a heating component, and the heating component is used to heat the heat exchanger; and / or The direct cooling and direct heating energy storage cabinet further includes a water receiving container, and the water receiving container is arranged below the heat exchanger; the bottom of the water receiving container is connected to a drain pipe; and / or The reversing valve is a four-way reversing valve; and / or The battery pack further comprises a first temperature sensor for detecting its temperature; and / or The battery auxiliary module further includes a second temperature sensor for detecting the temperature thereof.

Images