Direct-cooling and direct-heating energy storage cabinet

Abstract

The present application relates to the technical field of energy storage cabinets, and especially relates to a direct-cooling and direct-heating energy storage cabinet. The direct-cooling and direct-heating energy storage cabinet comprises a battery pack, a battery auxiliary module and a heat exchange unit, wherein the battery pack comprises a first liquid-cooled plate; the battery auxiliary module comprises a second liquid-cooled plate; the heat exchange unit comprises a compressor, a reversing valve and a heat exchanger; during refrigeration, after a refrigerant flows out from the compressor, the refrigerant flows through the reversing valve and the heat exchanger, and then respectively flows into the first liquid-cooled plate and the second liquid-cooled plate; and after heat exchange is completed, the refrigerant flows out from the two liquid-cooled plates, then sequentially flows through the reversing valve, and finally flows back into the compressor; and during heating, after the refrigerant flows out from the compressor, the refrigerant flows through the reversing valve and the first liquid-cooled plate, then flows through the heat exchanger and the reversing valve, and finally flows back into the compressor. The present direct-cooling system can synchronously dissipate heat from the battery pack, a main control box, a PCS module, etc., controls the temperature of a battery to be within an appropriate range, and can also improve the operating efficiency of various electronic devices and reduce the risk of over-temperature current limiting.

Description

Direct cooling and direct heating type energy storage cabinet

[0001] Cross-reference to related applications

[0002] The present application claims priority from the Chinese patent application No. 2024211359267 entitled "Direct cooling and direct heating type energy storage cabinet" filed on May 22, 2024 with the China Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of energy storage cabinets, in particular to a direct cooling and direct heating type energy storage cabinet. BACKGROUND

[0004] At present, the traditional liquid-cooled energy storage cabinet is provided with a cooling unit, and a plate heat exchanger is arranged inside. The refrigerant first cools the ethylene glycol water solution through the plate heat exchanger, and then the low-temperature ethylene glycol water 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 water solution, and then the heat-exchanged ethylene glycol water solution is used as a cooling liquid to cool the battery pack. There are many intermediate heat exchange links, the refrigeration efficiency is low, the energy consumption is large, in addition, the liquid-cooled energy storage cabinet is also provided with a main control box and other structures installed with electrical elements, which produce a large amount of heat and cannot be quickly dissipated, resulting in low operating efficiency of various electronic devices and increasing the risk of over-temperature current limiting.

[0005] SUMMARY

[0006] The present application aims to provide a direct cooling and direct heating type energy storage cabinet, which solves the technical problem of the related art that in the liquid-cooled energy storage cabinet, the refrigerant first cools the ethylene glycol water solution through the plate heat exchanger, and then the low-temperature ethylene glycol water solution flows through the liquid-cooled battery pack to take away the heat, there are many intermediate heat exchange links, the refrigeration efficiency is low, the energy consumption is large, in addition, the main control box and other structures installed with electrical elements produce a large amount of heat and cannot be quickly dissipated, resulting in low operating efficiency of various electronic devices and increasing the risk of over-temperature current limiting.

[0007] The present application provides a direct cooling and direct heating type 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;

[0008] When refrigerating, the compressor, the reversing valve, the heat exchanger, the first liquid cooling plate, the reversing valve, and the compressor are sequentially connected in communication to form a first circulating refrigeration path,

[0009] the compressor, the reversing valve, the heat exchanger, the second liquid cooling plate, the reversing valve, and the compressor are sequentially connected in communication to form a second circulating refrigeration path;

[0010] When heating, the compressor, the reversing valve, the first liquid cooling plate, the heat exchanger, the reversing valve and the compressor are sequentially connected in communication to form a first circulating heating path, and the reversing valve is disconnected from the second liquid cooling plate.

[0011] In the above technical solution, the direct cooling and direct heating type energy storage cabinet further comprises a first heat exchange pipe assembly and a second heat exchange pipe assembly; the first liquid cooling plate is connected in communication with the heat exchanger through the first heat exchange pipe assembly; and the first liquid cooling plate is connected in communication with the reversing valve through the second heat exchange pipe assembly.

[0012] In any of the above technical solutions, the direct cooling and direct heating type energy storage cabinet further comprises a third heat exchange pipe assembly and a fourth heat exchange pipe assembly; the second liquid cooling plate is connected in communication with the heat exchanger through the third heat exchange pipe assembly; and the second liquid cooling plate is connected in communication with the reversing valve through the fourth heat exchange pipe assembly.

[0013] In any of the above technical solutions, the direct cooling and direct heating type energy storage cabinet further comprises a first three-way joint, and the first heat exchange pipe assembly and the third heat exchange pipe assembly are connected in communication with the heat exchanger through the first three-way joint.

[0014] In any of the above technical solutions, the first heat exchange pipe assembly comprises a first main pipe, a first merging pipe and a first branch pipe; the first branch pipe is connected in communication with the first main pipe through the first merging pipe, the first main pipe is further connected in communication with the heat exchanger through the first three-way joint; and the first branch pipe is in one-to-one correspondence with and connected in communication with the first liquid cooling plate.

[0015] In any of the above technical solutions, the first main pipe is provided with a first stop valve assembly.

[0016] Any of the first branch pipes is provided with a second stop valve assembly.

[0017] In any of the above technical solutions, the first stop valve assembly and the second stop valve assembly each comprise two first stop valves, and the two first stop valves are detachably connected.

[0018] In any of the above technical solutions, the first branch pipe is provided with a first electronic expansion valve.

[0019] In any of the above technical solutions, the direct cooling and direct heating type energy storage cabinet further comprises a second three-way joint, and the second heat exchange pipe assembly and the fourth heat exchange pipe assembly are connected in communication with the reversing valve through the second three-way joint.

[0020] In any of the above technical solutions, optionally, the second heat exchange pipe assembly comprises a second main pipe, a second merging pipe, and a second branch pipe connected with the second main pipe; the second branch pipe is connected with the second main pipe through the second merging pipe, and the second main pipe is further connected with the reversing valve through the second tee joint; the second branch pipe corresponds to the first liquid cooling plate one by one and is connected with the first liquid cooling plate one by one.

[0021] In any of the above technical solutions, optionally, any of the second branch pipes is provided with a third stop valve assembly.

[0022] The second main pipe is provided with a fourth stop valve assembly.

[0023] In any of the above technical solutions, optionally, the third stop valve assembly and the fourth stop valve assembly each comprise two second stop valves, and the two second stop valves are detachably connected.

[0024] In any of the above technical solutions, optionally, the third heat exchange pipe assembly comprises a third main pipe, a third merging pipe, and a third branch pipe; the third branch pipe is connected with the third main pipe through the third merging pipe, and the third main pipe is further connected with the heat exchanger through the first tee joint; the third branch pipe corresponds to the second liquid cooling plate one by one and is connected with the second liquid cooling plate one by one.

[0025] In any of the above technical solutions, optionally, the third main pipe is provided with a fifth stop valve assembly.

[0026] Any of the third branch pipes is provided with a sixth stop valve assembly.

[0027] In any of the above technical solutions, optionally, the fifth stop valve assembly and the sixth stop valve assembly each comprise two third stop valves, and the two third stop valves are detachably connected.

[0028] In any of the above technical solutions, optionally, the third branch pipe is provided with a second electronic expansion valve.

[0029] In any of the above technical solutions, optionally, the fourth heat exchange pipe assembly comprises a fourth main pipe, a fourth merging pipe, and a fourth branch pipe; the fourth branch pipe is connected with the fourth main pipe through the fourth merging pipe, and the fourth main pipe is further connected with the reversing valve through the second tee joint; the fourth branch pipe corresponds to the second liquid cooling plate one by one and is connected with the second liquid cooling plate one by one.

[0030] In any of the above technical solutions, optionally, any of the fourth branch pipes is provided with a seventh stop valve assembly.

[0031] The fourth main pipeline is provided with an eighth stop valve assembly.

[0032] In any of the above technical solutions, optionally, 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.

[0033] In any of the above technical solutions, optionally, the fourth main pipeline is provided with a solenoid valve.

[0034] In any of the above technical solutions, optionally, the number of battery auxiliary modules is two, one of which is a master control box, and the other is an electric energy conversion box, and along the height direction of the direct cooling and direct heating type energy storage cabinet and from top to bottom, the master control box, the electric energy conversion box and the heat exchange unit are sequentially arranged below the battery pack.

[0035] In any of the above technical solutions, optionally, the number of battery packs is multiple, and at least one column of battery packs arranged along the height direction of the direct cooling and direct heating type energy storage cabinet is formed.

[0036] In any of the above technical solutions, optionally, the direct cooling and direct heating type energy storage cabinet further comprises a fan, and the fan is configured to dissipate heat from the heat exchanger.

[0037] In any of the above technical solutions, optionally, the direct cooling and direct heating type energy storage cabinet further comprises a heating member, and the heating member is configured to heat the heat exchanger.

[0038] In any of the above technical solutions, optionally, the direct cooling and direct heating type energy storage cabinet further comprises a water collector, and the water collector is arranged below the heat exchanger; the bottom of the water collector is connected with a drain pipe.

[0039] In any of the above technical solutions, optionally, the reversing valve is a four-way reversing valve.

[0040] In any of the above technical solutions, optionally, the battery pack further comprises a first temperature sensor configured to detect the temperature thereof.

[0041] In any of the above technical solutions, optionally, the battery auxiliary module further comprises a second temperature sensor configured to detect the temperature thereof.

[0042] Compared with the related art, the present application has the following beneficial effects:

[0043] The direct cooling system can simultaneously dissipate heat from the battery pack, the master control box and the PCS module, i.e. the electric energy conversion box, in addition to controlling the battery temperature within a suitable range, the operation efficiency of various electronic devices is improved, and the risk of over-temperature current limiting is reduced.

[0044] Compared with the traditional liquid-cooled energy storage cabinet, in which 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-cooled battery pack to take away the heat, in the present scheme, the refrigerant directly flows through the liquid cooling plate for heat exchange, that is, the battery pack is refrigerated, reducing the refrigerant and cooling liquid heat exchange steps, thereby greatly improving the refrigeration efficiency and saving energy.

[0045] 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 short circuit, leading to thermal runaway. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the specific embodiments or related art, the following will briefly introduce the drawings needed to be used in the specific embodiments or related art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0047] FIG. 1 is a heat exchange principle diagram of the direct cooling and direct heating type energy storage cabinet provided by the present application;

[0048] FIG. 2 is a principle diagram of the direct cooling and direct heating type energy storage cabinet provided by the present application when refrigerating;

[0049] FIG. 3 is a principle diagram of the direct cooling and direct heating type energy storage cabinet provided by the present application when heating;

[0050] FIG. 4 is a schematic diagram of the direct cooling and direct heating type energy storage cabinet provided by the present application being opened;

[0051] FIG. 5 is a schematic diagram of the inside of the direct cooling and direct heating type energy storage cabinet provided by the present application;

[0052] FIG. 6 is a schematic diagram of a partial enlarged structure of FIG. 5;

[0053] FIG. 7 is another schematic diagram of a partial enlarged structure of FIG. 5.

[0054] Reference signs:

[0055] 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 joint, 4-first heat exchange pipe assembly, 41-first main pipe, 42-first merging pipe, 43-first branch pipe, 5-first stop valve assembly, 51-1st first stop valve, 52-2nd first stop valve, 6-second stop valve assembly, 61-3rd first stop valve, 62-4th first stop valve, 7-first electronic expansion valve, 8-second heat exchange pipe assembly, 81-second main pipe, 82-second merging pipe, 83-second branch pipe, 9-third stop valve assembly, 91-1st second stop valve, 92-2nd second stop valve, 10-fourth stop valve assembly, 101-3rd second stop valve, 102-4th second stop valve, 11-third heat exchange pipe assembly, 111-third main pipe, 112-third merging pipe, 113-third branch pipe, 12-fifth stop valve assembly, 121-1st third stop valve, 122-2nd third stop valve, 13-sixth stop valve assembly, 131-3rd third stop valve, 132-4th third stop valve, 14-second electronic expansion valve, 15-fourth heat exchange pipe assembly, 151-fourth main pipe, 152-fourth merging pipe, 153-fourth branch pipe, 16-seventh stop valve assembly, 161-1st fourth stop valve, 162-2nd fourth stop valve, 17-eighth stop valve assembly, 171-3rd fourth stop valve, 172-4th fourth stop valve, 18-second three-way joint, 19-solenoid valve, 20-main control box, 21-electric energy conversion box, 22-fan, 23-heating component, 24-water receiving container, 25-drain pipe, 26-cabinet body, 27-cabinet door. DETAILED DESCRIPTION

[0056] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0057] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0058] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0059] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third" are configured for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0061] The direct-cooling and direct-heating energy storage cabinet according to some embodiments of this application is described below with reference to Figures 1 to 7.

[0062] Example 1

[0063] Referring to Figures 1 to 7, an embodiment of this application provides a direct cooling and direct heating energy storage cabinet, including: a battery pack 1, a battery auxiliary module, and a heat exchange unit 2; wherein, the battery pack 1 includes a first liquid cooling plate, the battery auxiliary module includes a second liquid cooling plate, and the heat exchange unit 2 includes a compressor 201, a reversing valve 202, and a heat exchanger 203;

[0064] During refrigeration, the compressor 201, reversing valve 202, heat exchanger 203, first liquid cooling plate, reversing valve 202, and compressor 201 are sequentially connected to form the first refrigeration cycle path.

[0065] The compressor 201, reversing valve 202, heat exchanger 203, second liquid cooling plate, reversing valve 202 and compressor 201 are connected in sequence to form a second cycle refrigeration path;

[0066] When heating, the compressor 201, reversing valve 202, first liquid cooling plate, heat exchanger 203, reversing valve 202 and compressor 201 are connected in sequence to form a first circulating heating path, and the reversing valve 202 is disconnected from the second liquid cooling plate.

[0067] Based on the structure described above, the working process of the direct-cooling and direct-heating energy storage cabinet provided in this application is as follows:

[0068] As shown in FIG. 2, when refrigerating, the refrigerant flows out of the compressor 201, then flows through the reversing valve 202 and the heat exchanger 203 in turn, and then flows into the first liquid cooling plate and the second liquid cooling plate, respectively. After the refrigerant completes heat exchange, it flows out of the first liquid cooling plate and the second liquid cooling plate, then flows through the reversing valve 202 in turn, and finally flows back into the compressor 201.

[0069] As shown in FIG. 3, when heating, the refrigerant flows out of the compressor 201, then flows into the first liquid cooling plate through the reversing valve 202 without flowing through the second liquid cooling plate, and then flows out of the first liquid cooling plate after completing heat exchange. Then, the refrigerant flows through the heat exchanger 203 and the reversing valve 202 in turn, and finally flows back into the compressor 201.

[0070] As can be seen, the direct cooling and heating type energy storage cabinet provided by the present application can simultaneously cool the battery pack 1 and the battery auxiliary module such as the main control box 20 and the electric energy conversion box 21, that is, compared with the scheme in which 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 heat in the conventional liquid-cooled energy storage cabinet, the refrigerant directly flows through the liquid cooling plate to exchange heat in the present scheme, that is, to cool the battery pack 1, thereby reducing the steps of refrigerant and cooling liquid heat exchange, and greatly improving the refrigeration efficiency and saving energy. Moreover, compared with the conventional liquid-cooled energy storage cabinet, when leakage occurs, the ethylene glycol aqueous solution for heat exchange may cause insulation failure of the conductive system, and even cause short circuit, leading to thermal runaway. In the present scheme, when the refrigerant leaks, the refrigerant can quickly evaporate, and generally does not cause the safety hazards of short circuit or thermal runaway.

[0071] In this embodiment, as shown in FIGS. 1 to 6, the direct cooling and heating type energy storage cabinet further comprises a first heat exchange pipe assembly 4 and a second heat exchange pipe assembly 8. The first liquid cooling plate is connected in communication with the heat exchanger 203 through the first heat exchange pipe assembly 4. The first liquid cooling plate is connected in communication with the reversing valve 202 through the second heat exchange pipe assembly 8.

[0072] According to the above-described structure, especially when the number of battery packs 1 is multiple, by designing the reasonable arrangement of the first heat exchange pipe assembly 4 and the second heat exchange pipe assembly 8, the connection of multiple battery packs 1 with the heat exchange unit 2 can be realized, and the synchronous heat exchange such as cooling or heating of multiple battery packs 1 can be realized.

[0073] In this embodiment, as shown in FIGS. 1 to 6, the direct cooling and heating type energy storage cabinet further comprises a third heat exchange pipe assembly 11 and a fourth heat exchange pipe assembly 15. The second liquid cooling plate is connected in communication with the heat exchanger 203 through the third heat exchange pipe assembly 11. The second liquid cooling plate is connected in communication with the reversing valve 202 through the fourth heat exchange pipe assembly 15.

[0074] According to the above-described structure, especially when the number of battery auxiliary modules is multiple, by designing the reasonable arrangement of the third heat exchange pipe assembly 11 and the fourth heat exchange pipe assembly 15, the connection of multiple battery auxiliary modules with the heat exchange unit 2 is realized synchronously, and the synchronous heat exchange such as cooling or heating of multiple battery packs 1 can be realized.

[0075] In this embodiment, optionally, as shown in FIGS. 1-3, the direct cooling and direct heating type energy storage cabinet further comprises a first three-way joint 3, and the first heat exchange pipe assembly 4 and the third heat exchange pipe assembly 11 are communicated with the heat exchanger 203 via the first three-way joint 3.

[0076] According to the above-described structure, the first heat exchange pipe assembly 4 and the third heat exchange pipe assembly 11 can be simultaneously communicated with the heat exchanger 203 by using the first three-way joint 3.

[0077] In this embodiment, optionally, as shown in FIGS. 1-3, the direct cooling and direct heating type energy storage cabinet further comprises a second three-way joint 18, and the second heat exchange pipe assembly 8 and the fourth heat exchange pipe assembly 15 are communicated with the reversing valve 202 via the second three-way joint 18.

[0078] According to the above-described structure, the second heat exchange pipe assembly 8 and the fourth heat exchange pipe assembly 15 can be simultaneously communicated with the reversing valve 202 by using the second three-way joint 18.

[0079] In this embodiment, optionally, as shown in FIGS. 1-6, the first heat exchange pipe assembly 4 comprises a first main pipe 41, a first merging pipe 42 and a first branch pipe 43; the first branch pipe 43 is communicated with the first main pipe 41 via the first merging pipe 42, and the first main pipe 41 is further communicated with the heat exchanger 203 via the first three-way joint 3; the first branch pipe 43 corresponds to and is communicated with the first liquid cooling plate one by one.

[0080] Further, optionally, as shown in FIGS. 1-6, the second heat exchange pipe assembly 8 comprises a second main pipe 81, a second merging pipe 82 and a second branch pipe 83 communicated with the second main pipe 81; the second branch pipe 83 is communicated with the second main pipe 81 via the second merging pipe 82, and the second main pipe 81 is further communicated with the reversing valve 202 via the second three-way joint 18; the second branch pipe 83 corresponds to and is communicated with the first liquid cooling plate one by one.

[0081] According to the structure described above, by designing the first branch pipe 43 and the second branch pipe 83 and connecting them 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 first merging pipe 42 and the second merging pipe 82 respectively serve as the role of connecting each first branch pipe 43 and each second branch pipe 83, that is, the role of merging, which helps to save the pipe, reduce the occupied space, and improve the energy density; the first main pipe 41 and the second main pipe 81 respectively serve as the role of connecting the heat exchanger 203 and the reversing valve 202.

[0082] In this embodiment, as shown in FIGS. 1-3 and 6, the first main pipe 41 is provided with a first stop valve assembly 5.

[0083] Any first branch pipe 43 is provided with a second stop valve assembly 6.

[0084] According to the structure described above, when the heat exchange system fails, the first stop valve assembly 5 and the second stop valve assembly 6 can be used to cut off the battery pack 1 and the first heat exchange pipe assembly 4 from the heat exchange system, stop the refrigerant, so that the refrigerant does not leak, and facilitate the repair of the fault point.

[0085] In this embodiment, as shown in FIGS. 1-3 and 6, the first stop valve assembly 5 and the second stop valve assembly 6 each include two first stop valves. Here, in order to distinguish the different first stop valves described above, the following naming is used: the two stop valves included in the first stop valve assembly 5 are No. 1 first stop valve 51 and No. 2 first stop valve 52, and the two stop valves included in the second stop valve assembly 6 are No. 3 first stop valve 61 and No. 4 first stop valve 62, wherein the No. 1 first stop valve 51 and the No. 2 first stop valve 52 are detachably connected, and the No. 3 first stop valve 61 and the No. 4 first stop valve 62 are detachably connected.

[0086] 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, which facilitates the disconnection between the two first stop valves, that is, the pipes connected by the two first stop valves are independent of each other, and the two first stop valves can stop the end of the respective pipes, which can effectively prevent liquid leakage and facilitate maintenance or replacement operations.

[0087] It should be noted that two stop valves are often used in pairs and in butt joint. The two stop valves can be independently controlled to open and close the pipe, so the assembly structure of the two stop valves is not described in detail here.

[0088] In this embodiment, as shown in FIGS. 1-3 and 6, any second sub-pipe 83 is optionally provided with a third stop valve assembly 9.

[0089] The second main pipe 81 is provided with a fourth stop valve assembly 10.

[0090] According to the above-described structure, when the heat exchange system has a problem, the third stop valve assembly 9 and the fourth stop valve assembly 10 can be used to cut off the battery pack 1 and the second heat exchange pipe assembly 8 from the heat exchange system, thereby stopping the leakage of refrigerant and facilitating the repair of the fault point.

[0091] In this embodiment, as shown in FIGS. 1-3 and 6, the third stop valve assembly 9 and the fourth stop valve assembly 10 each include two second stop valves. Here, in order to distinguish the different second stop valves described above, the two stop valves included in the third stop valve assembly 9 are designated as a No. 1 second stop valve 91 and a No. 2 second stop valve 92, and the two stop valves included in the fourth stop valve assembly 10 are designated as a No. 3 second stop valve 101 and a No. 4 second stop valve 102. The No. 1 second stop valve 91 and the No. 2 second stop valve 92 are detachably connected, and the No. 3 second stop valve 101 and the No. 4 second stop valve 102 are detachably connected.

[0092] According to the above-described structure, 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 pipes connected to the two third stop valves are independent of each other, and the two third stop valves can stop the end of the respective pipes, which can effectively prevent leakage and facilitate maintenance or replacement operations.

[0093] As can be seen, 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 include two detachable first stop valves, thereby completely dividing the battery pack 1, the first heat exchange pipe assembly 4, the second heat exchange pipe assembly 8, and the heat exchange unit 2 into independent structures, and ensuring that each section does not leak refrigerant, which is particularly convenient for maintaining or replacing the battery pack.

[0094] In this embodiment, as shown in FIGS. 1-3 and 6, the first sub-pipe 43 is provided with a first electronic expansion valve 7, which can adjust the flow rate of the refrigerant in each sub-pipe, thereby accurately controlling the temperature of each battery pack 1, reducing the temperature difference between the battery packs 1, ensuring the temperature consistency of each battery pack 1, and improving the overall cycle life of the energy storage cabinet.

[0095] In this embodiment, optionally, as shown in FIGS. 1-3 and 6, the third heat exchange pipeline assembly 11 comprises a third main pipeline 111, a third merging pipeline 112, and a third branch pipeline 113; the third branch pipeline 113 communicates with the third main pipeline 111 via the third merging pipeline 112, and the third main pipeline 111 further communicates with the heat exchanger 203 via the first three-way joint 3; the third branch pipeline 113 corresponds to and respectively communicates with the second liquid cooling plate one by one.

[0096] Further, optionally, as shown in FIGS. 1-3 and 7, the fourth heat exchange pipeline assembly 15 comprises a fourth main pipeline 151, a fourth merging pipeline 152, and a fourth branch pipeline 153; the fourth branch pipeline 153 communicates with the fourth main pipeline 151 via the fourth merging pipeline 152, and the fourth main pipeline 151 further communicates with the reversing valve 202 via the second three-way joint 18; the fourth branch pipeline 153 corresponds to and respectively communicates with the second liquid cooling plate one by one.

[0097] According to the above-described structure, by designing the third branch pipeline 113 and the fourth branch pipeline 153 and making them respectively communicate with the inlet end and the outlet end of the liquid cooling plate, it can be ensured that the refrigerant can flow into the second liquid cooling plate of each battery auxiliary module for synchronous heat exchange, and the third merging pipeline 112 and the fourth merging pipeline 152 respectively serve to communicate the third branch pipelines 113 and the fourth branch pipelines 153, i.e., to serve as a flow collector, which helps to save pipelines, reduce the occupied space, and improve the energy density; the third main pipeline 111 and the fourth main pipeline 151 respectively serve to communicate the heat exchanger 203 and the reversing valve 202.

[0098] In this embodiment, optionally, as shown in FIGS. 1-3 and 7, the third main pipeline 111 is provided with a fifth stop valve assembly 12.

[0099] Any third branch pipeline 113 is provided with a sixth stop valve assembly 13.

[0100] According to the above-described structure, when the heat exchange system has a problem, the third heat exchange pipeline assembly 11 can be cut off from the heat exchange system by using the fifth stop valve assembly 12 and the sixth stop valve assembly 13 to stop the refrigerant, so that the refrigerant does not leak, and the fault point is convenient for maintenance.

[0101] In this embodiment, as shown in FIGS. 1-3 and 7, the fifth stop valve assembly 12 and the sixth stop valve assembly 13 each include two third stop valves. For the sake of distinguishing the different third stop valves, the two third stop valves included in the fifth stop valve assembly 12 are referred to as the first third stop valve 121 and the second third stop valve 122, and the two third stop valves included in the sixth stop valve assembly 13 are referred to as the third third stop valve 131 and the fourth third stop valve 132. The first third stop valve 121 and the second third stop valve 122 are detachably connected, and the third third stop valve 131 and the fourth third stop valve 132 are detachably connected.

[0102] According to the above-described structure, 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 stop the end portions of the respective pipelines, which can effectively prevent liquid leakage and facilitate maintenance or replacement.

[0103] In this embodiment, as shown in FIGS. 1-3 and 7, any fourth branch pipeline 153 is provided with a seventh stop valve assembly 16.

[0104] The fourth main pipeline 151 is provided with an eighth stop valve assembly 17.

[0105] According to the above-described structure, when the heat exchange system has a problem, the seventh stop valve assembly 16 and the eighth stop valve assembly 17 can be used to cut off the battery pack 1 and the fourth heat exchange pipeline assembly 15 from the heat exchange system, stop the refrigerant, and prevent the refrigerant from leaking, thereby facilitating the maintenance of the fault point.

[0106] In this embodiment, as shown in FIGS. 1-3 and 7, the seventh stop valve assembly 16 and the eighth stop valve assembly 17 each include two fourth stop valves. For the sake of distinguishing the different fourth stop valves, the two fourth stop valves included in the seventh stop valve assembly 16 are referred to as the first fourth stop valve 161 and the second fourth stop valve 162, and the two fourth stop valves included in the eighth stop valve assembly 17 are referred to as the third fourth stop valve 171 and the fourth fourth stop valve 172. The first fourth stop valve 161 and the second fourth stop valve 162 are detachably connected, and the third fourth stop valve 171 and the fourth fourth stop valve 172 are detachably connected.

[0107] According to the above-described structure, the two fourth stop valves in the seventh stop valve assembly 16 and the eighth stop valve assembly 17 are designed to be detachable, that is, the pipelines connected to the two fourth stop valves are independent of each other, and the two fourth stop valves can stop the end portions of the respective pipelines, which can effectively prevent liquid leakage and facilitate maintenance or replacement.

[0108] 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 each comprise a detachable structure of two third stop valves, thereby completely separating the battery pack 1, the third heat exchange pipeline assembly 11, the fourth heat exchange pipeline assembly 15 and the heat exchange unit 2 into independent structures, and ensuring that each section is free of refrigerant leakage, and facilitating maintenance or replacement of each battery auxiliary module, such as the main control box 20 and the power conversion box 21.

[0109] In this embodiment, as shown in FIGS. 1-3 and 7, the third branch pipeline 113 is provided with a second electronic expansion valve 14, which can adjust the flow rate of refrigerant in each branch pipeline, thereby accurately controlling the temperature of each battery pack 1 auxiliary module.

[0110] In this embodiment, as shown in FIGS. 1-3 and 7, the number of battery auxiliary modules is two, one of which is the main control box 20, and the other of which is the power conversion box 21, and along the height direction of the direct cooling and direct heating type energy storage cabinet and from top to bottom, the main control box 20, the power conversion box 21 and the heat exchange unit 2 are sequentially arranged below the battery pack 1.

[0111] According to the above-described structure, it can be known that the direct cooling system can simultaneously dissipate heat from the battery pack 1, the main control box 20 and the PCS module, i.e., the power conversion box 21, thereby not only controlling the battery temperature within an appropriate range, but also improving the operating efficiency of various electronic devices and reducing the risk of over-temperature current limiting.

[0112] Moreover, the heat exchange unit 2 is installed at the bottom, and the main control box 20 and the power conversion box 21, which are provided with electrical elements, are installed above, so that once the heat exchange unit 2 leaks, the leaked refrigerant will not flow to the control box and the power conversion box 21 above under the action of gravity, thereby not damaging the electrical elements, and being more safe and reliable.

[0113] It should be noted that for the main control box 20 and the power conversion box 21, two third branch pipelines 113 and a third main pipeline 111 are required, and the two third branch pipelines 113 are respectively connected to the main control box 20 and the power conversion box 21 in one-to-one correspondence, and the two third branch pipelines 113 are also connected to the third main pipeline 111, and correspondingly, two fourth branch pipelines 153 and a fourth main pipeline 151 are required, and the two fourth branch pipelines 153 are respectively connected to the main control box 20 and the power conversion box 21 in one-to-one correspondence, and the two fourth branch pipelines 153 are also connected to the fourth main pipeline 151, and the second electronic expansion valve 14 and the sixth stop valve assembly 13 are arranged on each of the aforementioned third branch pipelines 113, and the seventh stop valve assembly 16 is arranged on each of the fourth branch pipelines 153.

[0114] It can be seen that the number of the third sub-pipes 113 and the fourth sub-pipes 153 needs to be equal to and one-to-one corresponding to the number of the battery auxiliary modules, and when the number of the battery auxiliary modules is adjusted, the number of the third sub-pipes 113, the fourth sub-pipes 153, the second electronic expansion valve 14, the sixth stop valve assembly 13 and the seventh stop valve assembly 16 also correspondingly adjust.

[0115] In this embodiment, as shown in FIGS. 4 and 5, the number of the battery packs 1 is multiple, and a column of the battery packs 1 arranged along the height direction of the direct-cooling direct-heating energy storage cabinet is formed.

[0116] According to the structure described above, the battery packs 1 are arranged in columns, and the space in the height direction is fully utilized, and the integration is higher, and further, the main control box 20, the electric energy conversion box 21 and the heat exchange unit 2 are sequentially arranged below the column of the battery packs 1 along the height direction of the direct-cooling direct-heating energy storage cabinet and from top to bottom.

[0117] Further, the bottom of each battery pack 1 is provided with a first liquid cooling plate, each first liquid cooling plate is provided with a first sub-pipe 43 and a second sub-pipe 83, and when the number of the first liquid cooling plates is multiple, the number of the first sub-pipes 43 and the second sub-pipes 83 is multiple, and the multiple first sub-pipes 43 share a first main pipe 41, and the multiple second sub-pipes 83 share a second main pipe 81.

[0118] It should be noted that: not only limited to the column of the battery packs 1 in the present application, but also multiple columns of the battery packs 1, and each column of the battery packs 1 is provided with a first heat exchange pipe assembly 4 and a second heat exchange pipe assembly 8, and each column of the first heat exchange pipe assemblies 4 can be connected together through a first communication pipe, and then the first communication pipe is connected with the heat exchanger 203, and each column of the second heat exchange pipe assemblies 8 can be connected together through a second communication pipe, and then the second communication pipe is connected with the reversing valve 202, of course, not only limited to this, but also can be selected according to actual needs.

[0119] In addition, the number of the battery packs 1 in the present application is not only limited to multiple, but also can be one, and when the number of the battery packs 1 is one, it is designed according to actual needs.

[0120] In addition, in the present embodiment, each battery pack 1 is provided with a first liquid cooling plate, and the first liquid cooling plate is located at the bottom of the battery pack 1, of course, not only limited to this, each battery pack 1 can also be provided with multiple first liquid cooling plates, in addition, the position of the first liquid cooling plate is not only limited to being arranged at the bottom of the battery pack 1, but also can be designed at the top or the middle position, or the side, or other positions, and is designed according to actual needs.

[0121] In this embodiment, the direct cooling and direct heating type energy storage cabinet further comprises a fan 22, and the fan 22 is configured to dissipate heat from the heat exchanger 203, as shown in FIGS. 1-3.

[0122] According to the above-described structure, 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, accelerating the cooling of the refrigerant.

[0123] In this embodiment, the direct cooling and direct heating type energy storage cabinet further comprises a heating member 23, and the heating member 23 is configured to heat the heat exchanger 203, as shown in FIGS. 1-3.

[0124] According to the above-described structure, when the low-temperature refrigerant flows through the heat exchanger 203, frost will form on the outer wall of the heat exchanger 203, and the heating member 23 can be used to heat the outer wall of the heat exchanger 203, causing the frost to melt.

[0125] In this embodiment, the direct cooling and direct heating type energy storage cabinet further comprises a water collector 24, and the water collector 24 is disposed below the heat exchanger 203; the bottom of the water collector 24 is connected to a drain pipe 25, as shown in FIGS. 1-3.

[0126] According to the above-described structure, after the heating member 23 heats the outer wall of the heat exchanger 203, the melted frost will flow into the water collector 24 below and be discharged to the outside of the direct cooling and direct heating type energy storage cabinet through the drain pipe 25, making it safer and more reliable.

[0127] In this embodiment, the reversing valve 202 is a four-way reversing valve 202, and it has a first interface 2021, a second interface 2022, a third interface 2023, and a fourth interface 2024, the first interface 2021 is in communication with the inlet end of the compressor 201, the second interface 2022 is in communication with the liquid cooling plate, the third interface 2023 is in communication with the outlet end of the compressor 201, and the fourth interface 2024 is in communication with the heat exchanger 203, as shown in FIGS. 1-3.

[0128] The first three-way joint 3 has a fifth interface, a sixth interface, and a seventh interface, the fifth interface is in communication with the heat exchanger 203, the sixth interface is in communication with the first main pipeline 41, and the seventh interface is in communication with the third main pipeline 111; the second three-way joint 18 has an eighth interface, a ninth interface, and a tenth interface, the eighth interface is in communication with the reversing valve 202, the ninth interface is in communication with the second main pipeline 81, and the tenth interface is in communication with the fourth main pipeline 151.

[0129] When refrigerating, 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 cooling 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 in communication 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 cooling plate.

[0130] When refrigerating, 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 cooling 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 in communication 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 cooling plate.

[0131] 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 cooling 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 sequentially connected in communication 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.

[0132] Further, optionally, a second heat exchange pipe assembly 8 is arranged on the pipeline through which the second interface 2022 communicates with the liquid cooling plate.

[0133] In this embodiment, optionally, as shown in FIG. 5, the direct cooling and heating type energy storage cabinet provided by the application further comprises a cabinet body 26, and the aforementioned battery pack 1, the main control box 20, the electric energy conversion box 21 and the heat exchange unit 2, the first heat exchange pipe assembly 4 and the second heat exchange pipe assembly 8 are all arranged in the cabinet body 26.

[0134] Further, optionally, the cabinet body 26 is further provided with an openable cabinet door 27 for facilitating maintenance.

[0135] In summary, the detailed process of refrigeration and heating of the heat exchange structure in the direct cooling and heating type energy storage cabinet provided by the application is as follows:

[0136] When refrigerating, the third interface 2023 of the reversing valve 202 communicates with the fourth interface 2024 of the reversing valve 202, the second interface 2022 of the reversing valve 202 communicates with the first interface 2021 of the reversing valve 202, the refrigerant flows out from the outlet end of the compressor 201, and then 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 turn, and then flows into the liquid cooling plate, and the refrigerant evaporates and absorbs heat to cool the battery, and then 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 turn, and finally flows back into the compressor 201.

[0137] When heating, the third interface 2023 of the reversing valve 202 communicates with the second interface 2022 of the reversing valve 202, the fourth interface 2024 of the reversing valve 202 communicates with the first interface 2021 of the reversing valve 202, the refrigerant flows out from the compressor 201, and then flows through the third interface 2023 of the reversing valve 202 and the second interface 2022 of the reversing valve 202 in turn, and then flows into the liquid cooling plate, and then condenses and releases heat to heat the battery, and then flows out from 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 turn, and finally flows back into the compressor 201.

[0138] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. Industrial applicability

[0139] The present application provides a direct cooling and heating type energy storage cabinet, which 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. When refrigerating, the refrigerant flows out from the compressor, flows through the reversing valve and the heat exchanger, and then flows into the first liquid cooling plate and the second liquid cooling plate respectively, and then flows out from the two liquid cooling plates, and then flows through the reversing valve in turn, and finally flows back into the compressor. When heating, the refrigerant flows out from the compressor, 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 simultaneously cool the battery pack, the main control box and the PCS module, etc. In addition to controlling the battery temperature within a suitable range, it can also improve the operating efficiency of various electronic devices and reduce the risk of over-temperature current limiting.

Claims

1. A direct-cooling direct-heating energy storage tank, characterized by, The direct cooling and direct heating type energy storage cabinet comprises 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; When refrigerating, the compressor, the reversing valve, the heat exchanger, the first liquid cooling plate, the reversing valve and the compressor are sequentially connected in communication to form a first circulating refrigeration path, The compressor, the reversing valve, the heat exchanger, the second liquid cooling plate, the reversing valve and the compressor are sequentially connected in communication 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 sequentially connected in communication to form a first circulating heating path, and the reversing valve is disconnected from the second liquid cooling plate. The direct cooling and direct heating type energy storage cabinet further comprises a first heat exchange pipe assembly and a second heat exchange pipe assembly; wherein the first liquid cooling plate is connected in communication with the heat exchanger via the first heat exchange pipe assembly; and the first liquid cooling plate is connected in communication with the reversing valve via the second heat exchange pipe assembly.

2. The direct-cooling direct-heat energy storage tank of claim 1, wherein, The direct cooling and direct heating type energy storage cabinet further comprises a third heat exchange pipe assembly and a fourth heat exchange pipe assembly; wherein the second liquid cooling plate is connected in communication with the heat exchanger via the third heat exchange pipe assembly; and the second liquid cooling plate is connected in communication with the reversing valve via the fourth heat exchange pipe assembly.

3. The direct-cooling direct-heat energy storage tank of claim 2, wherein, The direct cooling and direct heating type energy storage cabinet further comprises a first three-way joint, and the first heat exchange pipe assembly and the third heat exchange pipe assembly are connected in communication with the heat exchanger via the first three-way joint.

4. The direct-cooling direct-heat thermal storage tank of claim 3, wherein, The first heat exchange pipe assembly comprises a first main pipe, a first merging pipe and a first branch pipe; wherein the first branch pipe is connected in communication with the first main pipe via the first merging pipe, and the first main pipe is further connected in communication with the heat exchanger via the first three-way joint; and the first branch pipe is in one-to-one correspondence with the first liquid cooling plate and connected in communication with the first liquid cooling plate respectively.

5. The direct-cooling direct-heat thermal storage tank of claim 4, wherein, The first main pipe is provided with a first stop valve assembly.

6. The direct-cooling direct-heat thermal storage tank of claim 5, wherein, Any of the first branch pipes is provided with a second stop valve assembly. The first stop valve assembly and the second stop valve assembly each comprise two first stop valves, and the two first stop valves are detachably connected.

7. The direct-cooling direct-heat thermal storage tank of claim 6, wherein, The first branch pipe is provided with a first electronic expansion valve.

8. The direct-cooling direct-heat thermal storage tank of claim 6, wherein, The direct cooling and direct heating type energy storage cabinet further comprises a second three-way joint, and the second heat exchange pipe assembly and the fourth heat exchange pipe assembly are connected in communication with the reversing valve via the second three-way joint.

9. The direct-cooling direct-heat thermal storage tank of claim 3, wherein, The second heat exchange pipe assembly comprises a second main pipe, a second merging pipe and a second branch pipe connected in communication with the second main pipe; wherein the second branch pipe is connected in communication with the second main pipe via the second merging pipe, and the second main pipe is further connected in communication with the reversing valve via the second three-way joint; and the second branch pipe is in one-to-one correspondence with the first liquid cooling plate and connected in communication with the first liquid cooling plate respectively.

10. The direct-cooling direct-heat thermal storage tank of claim 9, wherein, Any of the second branch pipes is provided with a third stop valve assembly.

11. The direct-cooling direct-heat energy storage tank of claim 10, wherein, The second main pipe is provided with a fourth stop valve assembly. ​ 12. The direct-cooling direct-heat thermal storage tank of claim 11, wherein, The third and fourth stop valve assemblies each include two second stop valves, and the two second stop valves are detachably connected.

13. The direct-cooling direct-heat thermal storage tank of claim 4, wherein, The third heat exchange pipeline assembly includes a third main pipeline, a third merging pipeline, and third branch pipelines; the third branch pipelines are connected in communication with the third main pipeline via the third merging pipeline, and the third main pipeline is also connected in communication with the heat exchanger via the first three-way joint; the third branch pipelines correspond to the second liquid cooling plates one by one and are connected in communication with the second liquid cooling plates respectively.

14. The direct-cooling direct-heat thermal storage tank of claim 13, wherein, 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 direct-heat thermal storage tank of claim 14, wherein, The fifth and sixth stop valve assemblies each include two third stop valves, and the two third stop valves are detachably connected.

16. The direct-cooling direct-heat thermal storage tank of claim 13, wherein, The third branch pipelines are provided with second electronic expansion valves.

17. The direct-cooling direct-heat thermal storage tank of claim 9, wherein, The fourth heat exchange pipeline assembly includes a fourth main pipeline, a fourth merging pipeline, and fourth branch pipelines; the fourth branch pipelines are connected in communication with the fourth main pipeline via the fourth merging pipeline, and the fourth main pipeline is also connected in communication with the reversing valve via the second three-way joint; the fourth branch pipelines correspond to the second liquid cooling plates one by one and are connected in communication with the second liquid cooling plates respectively.

18. The direct-cooling direct-heat thermal storage tank of claim 17, wherein, 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 direct-heat thermal storage tank of claim 18, wherein, The seventh and eighth stop valve assemblies each include two fourth stop valves, and the two fourth stop valves are detachably connected.

20. The direct-cooling direct-heat thermal storage tank of claim 17, wherein, The fourth main pipeline is provided with a solenoid valve.

21. The direct-cooling direct-heat thermal storage tank of claim 1, wherein, The number of the battery auxiliary modules is two, one of which is a master control box, and the other is an electric energy conversion box, and along the height direction of the direct cooling and direct heating type energy storage cabinet and from top to bottom, the master control box, the electric energy conversion box, and the heat exchange unit are sequentially arranged below the battery pack.

22. The direct-cooling direct-heat thermal storage tank of any one of claims 1 to 21, wherein, The number of the battery packs is multiple, and at least one column of battery packs arranged along the height direction of the direct cooling and direct heating type energy storage cabinet is formed; and / or The direct cooling and direct heating type energy storage cabinet further includes a fan, and the fan is configured to dissipate heat from the heat exchanger; and / or The direct cooling and direct heating type energy storage cabinet further includes a heating member, and the heating member is configured to heat the heat exchanger; and / or The direct cooling and direct heating type energy storage cabinet further includes a water collecting container, and the water collecting container is arranged below the heat exchanger; a drain pipe is connected to the bottom of the water collecting container; and / or The reversing valve is a four-way reversing valve; and / or The battery pack further includes a first temperature sensor, and is configured to detect the temperature thereof; and / or The battery auxiliary module further includes a second temperature sensor, and is configured to detect the temperature thereof.

Images