Cooling unit and energy storage container

Abstract

The invention provides a cooling unit and an energy storage container. The cooling unit comprises a unit body, a first connector and a second connector, one end of the first connector is connected with a liquid outlet pipe in the unit body, and the other end of the first connector is provided with a first sealing section used for being connected with a liquid inlet pipe of a battery cabinet in an inserted mode. One end of the second connector is connected with a liquid return pipe in the unit body, and the other end of the second connector is provided with a second sealing section used for being connected with the liquid return pipe of the battery cabinet in an inserted mode; in the axial direction of the connector, the distance between the first sealing section and the unit body is larger than that between the second sealing section and the unit body, so that when the cooling unit moves to a first butt joint position where the first sealing section is initially connected with the liquid inlet pipe, a distance can be formed between the second sealing section and the liquid return pipe. When the cooling unit is connected with the battery cabinet and the heat exchange plate is filled with the heat exchange medium, air in the heat exchange plate can be conveniently exhausted, the exhaust operation is simple and convenient, the efficiency is high, the assembling time of the cooling unit can be shortened, and the exhaust effect is good.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a cooling unit and an energy storage container including the cooling unit. Background Art

[0002] An energy storage system is a system that converts other energy sources, such as solar energy, into electrical energy and stores it through energy storage devices. The core is energy storage batteries, inverters, and other auxiliary equipment. The temperature control of energy storage batteries is a key link to ensure the normal operation of the system, and high temperature control accuracy is required. The battery thermal management system usually includes a heat exchange plate that is arranged in the battery cabinet to exchange heat with the battery, and a cooling unit arranged outside the battery cabinet. During assembly, the pipelines on the cooling unit need to be connected to the pipelines on the battery cabinet so that the heat exchange medium circulates through the heat exchange plate under the action of the cooling unit to adjust the battery temperature.

[0003] In the process of implementing the present application, the inventors found that there are at least the following technical problems in the prior art: before assembly, the heat exchange plates and pipes in the battery cabinet are in an empty state, and there is air inside. The air in the heat exchange plates must be exhausted by vacuum extraction before the heat exchange medium can be filled in, which is cumbersome and inefficient. Summary of the invention

[0004] In view of this, the present application is dedicated to providing a cooling unit, which can conveniently discharge the air in the heat exchange plate when the heat exchange medium is filled into the heat exchange plate during the connection process with the battery cabinet. The exhaust operation is simple and efficient, which can shorten the assembly time of the cooling unit and improve the assembly efficiency, and the exhaust effect is good.

[0005] The present application provides a cooling unit, comprising a unit body and a first joint and a second joint arranged on the unit body, wherein one end of the first joint is connected to a liquid outlet pipe in the unit body, and the other end is provided with a first sealing section for plugging and connecting with a liquid inlet pipe of a battery cabinet, and one end of the second joint is connected to a liquid return pipe in the unit body, and the other end is provided with a second sealing section for plugging and connecting with a liquid return pipe of the battery cabinet; in the axial direction of the joint, the distance between the first sealing section and the unit body is greater than the distance between the second sealing section and the unit body, so that when the cooling unit moves to a first docking position where the first sealing section is initially connected to the liquid inlet pipe, the second sealing section can have a spacing with the liquid return pipe.

[0006] In a possible embodiment, the first joint includes a first connecting section connected to the unit body and the first sealing section connected to the first connecting section; the second joint includes a second connecting section connected to the unit body and the second sealing section connected to the second connecting section; and wherein the axial length of the first connecting section is greater than the axial length of the second connecting section, and / or the axial length of the first sealing section is greater than the axial length of the second sealing section.

[0007] In a possible embodiment, the first sealing section includes at least two sealing grooves arranged at intervals and a sealing ring disposed in each of the sealing grooves; and / or the second sealing section includes at least two sealing grooves arranged at intervals and a sealing ring disposed in each of the sealing grooves.

[0008] In a possible implementation manner, a third sealing segment spaced apart from the first sealing segment is further provided on the first joint, and the first sealing segment and the third sealing segment are provided with one or more sealing grooves and sealing rings arranged in the sealing grooves.

[0009] In a possible embodiment, a first stop step for abutting against the end of the liquid inlet pipe of the battery cabinet is provided on the first joint, and the first sealing section and the third sealing section are located on the side of the first stop step away from the unit body; and / or a second stop step for abutting against the end of the liquid return pipe of the battery cabinet is provided on the second joint.

[0010] In a possible embodiment, a blocking connector is provided on the outer wall of the unit body, and the blocking connector is used to abut and connect with the battery cabinet when the cooling unit moves to the second docking position, and a connecting hole is provided on the blocking connector; wherein the second docking position is the position where the first sealing section and the second sealing section are both connected to the battery cabinet.

[0011] In a possible implementation manner, a positioning detection component is further provided for checking whether the cooling unit moves to the first docking position.

[0012] In a possible implementation, the cooling unit includes a refrigerant pipeline, on which a grounded compressor and a heat exchanger for exchanging heat with the environment are provided, and the liquid outlet pipe and the liquid return pipe are both connected to the refrigerant pipeline.

[0013] The present application also provides an energy storage container, comprising a battery cabinet and a cooling unit, wherein the cooling unit is a cooling unit as described in any one of the above items.

[0014] In a possible embodiment, a concave cavity is provided on the battery cabinet for placing the cooling unit, and the connecting end of the liquid inlet pipe and the connecting end of the liquid return pipe are both arranged on the bottom wall of the concave cavity, and the distance from the connecting end of the liquid inlet pipe to the bottom wall of the concave cavity is smaller than the distance from the connecting end of the liquid return pipe to the bottom wall of the concave cavity.

[0015] The cooling unit provided in the present application can be quickly and conveniently connected to the battery cabinet through a plug-in connector, and is easy to operate. Moreover, since the sealing sections of the two connectors are at inconsistent distances from the unit body, the first connector on the liquid outlet pipe can be connected to the battery cabinet first. At this time, the second connector on the liquid return pipe has not yet been connected to the battery cabinet. At this time, the assembly is suspended, and the heat exchange medium is first filled into the battery cabinet. When the liquid return pipe of the battery cabinet is connected to the atmosphere, the heat exchange medium is filled into the battery cabinet, which can effectively discharge the air in the heat exchange plate through the exhaust valve and the pipe mouth of the liquid return pipe. When the heat exchange medium fills the heat exchange pipeline in the battery cabinet, for example, when the pipe mouth of the liquid return pipe starts to flow out the heat exchange medium, the cooling unit is continued to be pushed so that the second connector is also connected to the battery cabinet to complete the pipeline connection. In this way, all the air in the heat exchange pipeline in the battery cabinet can be discharged at the same time as the heat exchange medium is filled into the battery cabinet. The exhaust operation is simple and efficient, which can shorten the assembly time of the cooling unit and improve the assembly efficiency. The exhaust effect is good, which can avoid residual air in the heat exchange pipeline in the battery cabinet and improve the heat exchange efficiency of the cooling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure shows a first angle schematic diagram of a cooling unit in an embodiment of the present application;

[0017] Figure 2 The figure is a second angle schematic diagram of the cooling unit in the embodiment of the present application;

[0018] Figure 3 The figure shows a schematic diagram of the cooling unit in the first docking position in the embodiment of the present application;

[0019] Figure 4 Shown Figure 3 A partial enlarged view of

[0020] Figure 5 The figure shows a schematic diagram of the cooling unit in the second docking position in the embodiment of the present application;

[0021] Figure 6 Shown Figure 5 A partial enlarged view of

[0022] Figure 7 Shown is a schematic diagram of a battery cabinet in an embodiment of the present application;

[0023] Figure 8 Shown is a schematic diagram of an energy storage container in an embodiment of the present application.

[0024] Figure 1-Figure 8 :

[0025] 1. First joint; 11. First sealing section; 12. First connecting section; 101. First stop step; 2. Second joint; 21. Second sealing section; 22. Second connecting section; 201. Second stop step; 3. Unit body; 4. Blocking connector; 5. Battery cabinet; 501. Concave cavity; 502. First female connector; 503. Second female connector; 51. Fixing plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] Please refer to the attached Figure 1-Figure 8 The embodiment of the present application provides a cooling unit, which is used to connect with the battery cabinet 5 and provide circulating heat exchange medium to the heat exchange plate in the battery cabinet 5. The cooling unit includes a unit body 3 and a first joint 1 and a second joint 2 arranged on the unit body 3. The unit body 3 is provided with a liquid outlet pipe for providing heat exchange medium to the battery cabinet 5 and a liquid return pipe for returning the heat exchange medium flowing out of the battery cabinet 5. The battery cabinet 5 is provided with a liquid inlet pipe and a liquid return pipe connected to each heat exchange plate. The liquid inlet pipe is connected to the liquid outlet pipe, and the liquid return pipe is connected to the liquid return pipe, so that the heat exchange medium circulates under the drive of the unit. In the present application, the liquid outlet pipe is connected to the liquid inlet pipe through the first joint 1, and the liquid return pipe is connected to the liquid return pipe through the second joint 2. Of course, the liquid inlet pipe and the liquid return pipe can be correspondingly provided with plug-in female heads. In this way, by pushing the cooling unit to make it close to the battery cabinet 5 along the joint axis, the joint can be automatically plugged in, and the pipeline connection can be completed, which is easy to operate.

[0028] The cooling unit can be a liquid cooling unit or a direct cooling unit, for example, including a compressor and a heat exchanger for exchanging heat with the environment. In other words, the cooling unit includes a refrigerant pipeline, on which a grounded compressor and a heat exchanger for exchanging heat with the environment are arranged, and a liquid outlet pipe and a liquid return pipe are both connected to the refrigerant pipeline. The direct cooling unit provides refrigerant to the battery cabinet 5 to exchange heat with the battery, and the heat exchange efficiency is high.

[0029] In the present application, one end of the first joint 1 is connected to the liquid outlet pipe in the unit body 3, and the other end is provided with a first sealing section 11 for plugging and connecting with the liquid inlet pipe of the battery cabinet 5; one end of the second joint 2 is connected to the liquid return pipe in the unit body 3, and the other end is provided with a second seal for plugging and connecting with the liquid outlet pipe of the battery cabinet 5; sealing rings are provided on the first sealing section 11 and the second sealing section 21, so that they can be sealed and connected with the pipeline on the battery cabinet 5 after being plugged in, or the pipeline connection between the cooling unit and the battery cabinet 5 can be sealed.

[0030] At the same time, in the axial direction of the joint, which is also the docking direction of the cooling unit and the battery cabinet 5, the distance between the second sealing section 21 and the unit body 3 is greater than the distance between the first sealing section 11 and the unit body 3, that is, Figure 1As shown, the first sealing section 11 protrudes from the second sealing section 21. When assembled, the two joints face the battery cabinet 5 in the same direction, and the first sealing section 11 is closer to the battery cabinet 5. Then, when the cooling unit is pushed close to the battery cabinet 5, the first sealing section 11 is first inserted into the connecting end of the liquid inlet pipe of the battery cabinet 5, and is connected to the battery cabinet 5 before the second sealing section 21. At this time, the second sealing section 21 and the connecting end of the liquid return pipe of the battery cabinet 5 have a spacing (it should be noted that at this time, the second sealing section 21 and the connecting end of the liquid return pipe have a spacing, that is, the second sealing section 21 has not yet been inserted into the connecting end of the liquid return pipe, but since the second sealing section 21 can be arranged at the top of the second joint 2 close to the liquid return pipe, it can also be arranged at other positions, for example, the top of the second joint 2 is a light pipe, and the second sealing section 21 has a spacing with the axial edge of the top, therefore, at this time in the first docking position, the top of the second joint 2 can be spaced from the connecting end of the liquid return pipe, or can be inserted into the connecting end of the liquid return pipe, but in any embodiment, the second sealing section 21 has not yet been inserted into the connecting end of the liquid return pipe). The second position is recorded as the first docking position, and when the cooling unit moves to this position, the movement is stopped, and the heat exchange medium is filled into the battery cabinet 5. Since the first sealing section 11 is already sealed and connected to the liquid inlet pipe of the battery cabinet 5, the heat exchange medium can flow into the heat exchange plate of the battery cabinet 5 normally without leakage. When the liquid return pipe of the battery cabinet 5 is in a state of being connected to the atmosphere, the heat exchange medium is filled into the battery cabinet 5, and the air in the heat exchange plate can be effectively discharged through the exhaust valve and the pipe opening of the liquid return pipe. When the heat exchange medium fills the heat exchange pipeline (including the heat exchange plate, the liquid return pipe, the liquid inlet pipe, etc.) in the battery cabinet 5 (for example, the exhaust valve for exhaust on the battery cabinet 5 discharges steam, or the pipe opening of the liquid return pipe flows out the heat exchange medium), the cooling unit is pushed again, so that the second sealing section 21 of the second joint 2 is also connected to the battery cabinet 5 to complete the pipeline connection (the position where the docking is completed, that is, the position where the first sealing section 11 and the second sealing section 21 are both connected to the pipeline of the battery cabinet 5, is recorded as the second docking position). In this way, while charging the heat exchange medium into the battery cabinet 5, all the air in the heat exchange pipeline of the battery cabinet 5 can be discharged. The exhaust operation is simple and efficient, which can shorten the assembly time of the cooling unit and improve the assembly efficiency. The exhaust effect is good, avoiding residual air in the heat exchange pipeline in the battery cabinet 5 and ensuring the heat exchange efficiency of the heat exchange plate.

[0031] It should be noted that the pipeline of the battery cabinet 5 is equipped with an exhaust valve for discharging residual gas in the pipeline during the circulation of the heat exchange medium. In the present application, by setting the structure of the cooling unit, combining the ingenious use in actual assembly and the use of the exhaust valve, the air in the heat exchange pipeline in the battery cabinet 5 can be discharged when the heat exchange medium is filled into the battery cabinet 5, without using a vacuum pump to evacuate the heat exchange plate before assembling the cooling unit. On the basis of ensuring the exhaust effect, the exhaust operation is effectively simplified, the assembly time is saved, and the assembly efficiency is improved.

[0032] Specifically, the first joint 1 includes a first connection section 12 connected to the unit body 3 and a first sealing section 11 connected to the first connection section 12; the second joint 2 includes a second connection section 22 connected to the unit body 3 and a second sealing section 21 connected to the second connection section 22. The axial length of the first connection section 12 is greater than the axial length of the second connection section 22, and / or the axial length of the first sealing section 11 is greater than the axial length of the second sealing section 21. In this way, no matter which section on the first joint 1 is longer than the corresponding section on the second joint 2, it can be ensured that the first sealing section 11 of the first joint 1 is more protruding from the unit body 3.

[0033] In a preferred embodiment, the axial length of the first sealing segment 11 is greater than the axial length of the second sealing segment 21, and the axial length of the first connecting segment 12 is also greater than the axial length of the second connecting segment 22. In this way, the first sealing segment 11 can be effectively sealed and connected to the liquid inlet pipe of the battery cabinet 5 at both the first docking position and the second docking position, and the axial length of the first connecting segment 12 is greater than the axial length of the second connecting segment 22, so that in actual use, the distance from the first sealing segment 11 to the unit body 3 can be adjusted to meet the application requirements of different scenarios and increase convenience.

[0034] The first sealing section 11 is located at one end of the first joint 1 away from the unit body 3 and at the end position of the end. The second sealing section 21 is located at one end of the second joint 2 away from the unit body 3 and at the end position of the end.

[0035] like Figure 1 As shown, in some embodiments, the first sealing section 11 includes at least two sealing grooves arranged at intervals and a sealing ring disposed in each sealing groove. In this way, the pipeline connection is sealed by double sealing rings or multiple sealing rings, and the sealing effect is good.

[0036] Similarly, in some embodiments, the second sealing segment 21 includes at least two sealing grooves arranged at intervals and a sealing ring disposed in each sealing groove.

[0037] In some other embodiments, the first joint 1 is further provided with a third sealing section spaced apart from the first sealing section 11, and the first sealing section 11 and the third sealing section are both provided with at least one sealing ring. The first sealing section 11 is used to be sealed and connected to the liquid inlet pipe of the battery cabinet 5 in the first docking position, and the third sealing section is used to be sealed and connected to the liquid inlet pipe of the battery cabinet 5 in the second docking position. The distance between the third sealing section and the unit body 3 can be the same as the distance between the second sealing section 21 and the unit body 3.

[0038] In some embodiments, the first joint 1 is provided with a first stop step 101 for abutting against the end of the liquid inlet pipe of the battery cabinet 5, and the first sealing section 11 and the third sealing section are located on the side of the first stop step 101 away from the unit body 3. In this arrangement, when the second sealing section 21 is connected to the liquid return pipe of the battery cabinet 5, the first stop step 101 will abut against the end of the liquid inlet pipe of the battery cabinet 5. At this time, the operator can clearly know that the cooling unit has been connected to the battery cabinet 5, and can stop pushing the cooling unit to prevent the longer first sealing section 11 from moving excessively and moving out of the sealed docking area of ​​the liquid inlet pipe, thereby losing the sealing performance.

[0039] Similarly, the second connector 2 is provided with a second stop step 201 for abutting against the end of the liquid return pipe of the battery cabinet 5. In a preferred embodiment, both connectors are provided with stop steps. Such a configuration can prevent the cooling unit from being installed crookedly.

[0040] like Figure 4 As shown, the distance between the first stop step 101 and the unit body 3 is greater than the distance between the second stop step 201 and the unit body 3. The first stop step 101 can be arranged at the connection intersection of the first connecting section 12 and the first sealing section 11, for example, the diameter of the first connecting section 12 is greater than the diameter of the first sealing section 11, and the first stop step 101 can be formed at the shaft shoulder; the second stop step 201 can be arranged at the connection intersection of the second connecting section 22 and the second sealing section 21, for example, the diameter of the second connecting section 22 is greater than the diameter of the second sealing section 21, and the second stop step 201 can be formed at the shaft shoulder.

[0041] A blocking connector 4 is provided on the outer wall of the unit body 3, and a connection hole is provided on the blocking connector 4; the blocking connector 4 is used to abut and connect with the battery cabinet 5 when the cooling unit moves to the second docking position; wherein the second docking position is the position where the first sealing section 11 and the second sealing section 21 are connected to the battery cabinet 5. After the pipelines of the cooling unit and the battery cabinet 5 are connected, the cooling unit is fixedly connected to the battery cabinet 5 through the blocking connector 4 to prevent the cooling unit from sliding when the battery cabinet 5 moves, thereby preventing the pipeline connection from being disconnected.

[0042] Specifically, the blocking connector 4 may be a connecting plate, and if the docking direction, i.e., the axial direction of the first connector 1 and the second connector 2, is the first direction of the unit body 3, the connecting plate is located on one side or both sides in the second direction of the unit body 3. Accordingly, the battery cabinet 5 is provided with a fixing plate 51 that abuts against and is connected to the connecting plate.

[0043] like Figure 4-Figure 7As shown, the battery cabinet 5 is usually provided with a cavity 501 for accommodating the cooling unit. The cooling unit is inserted into the battery cabinet 5 from the cavity opening of the cavity 501. The connecting end of the liquid inlet pipe and the connecting end of the liquid return pipe of the battery cabinet 5 are usually arranged on the bottom wall of the cavity 501. The pipeline connection is completed by pushing the cooling unit to move to the bottom of the cavity 501. The direction from the cavity opening of the cavity 501 to the bottom wall is the docking direction. The side wall of the cavity 501 is provided with the above-mentioned fixing plate 51 for abutting and connecting with the connecting plate on the cooling unit. When the cooling unit moves to the second docking position, the connecting plate and the fixing plate 51 fit against each other, and the cooling unit can be detachably connected to the battery cabinet 5 by connecting the two with fasteners.

[0044] In some embodiments, the cooling unit is further provided with a positioning detection member for checking whether the cooling unit has moved to the first docking position; wherein the first docking position is a position where the second sealing section 21 is inserted into the connection end of the liquid inlet pipe and the first sealing section 11 is spaced from the connection end of the liquid return pipe. In this way, the operator can know in a timely and convenient manner when the cooling unit has moved to the first docking position, thereby preventing the cooling unit from moving too far.

[0045] Specifically, the positioning detection member is a connecting rod detachably connected to the unit body 3 and used to abut against the battery cabinet 5 at the first docking position; the end of the connecting rod away from the unit body 3 is flush with the end of the first sealing section 11. In this way, when the cooling unit moves to the first docking position, the connecting rod abuts against the battery cabinet 5, so that the operator can be informed in time, and the cooling unit can be fixed in time and accurately to prevent excessive displacement of the cooling unit. When the heat exchange medium is filled into the battery cabinet 5, the connecting rod can be removed. In this way, the subsequent movement and docking of the cooling unit will not be affected.

[0046] In the embodiment where the blocking connector 4 is provided, the connecting rod may be inserted into a connecting hole on the blocking connector 4 and detachably connected to the blocking connector 4 via a fastener.

[0047] Alternatively, the positioning detection member is a marking ruler slidably arranged on the unit body 3, the marking ruler is arranged along the docking direction and the first end away from the unit body 3 protrudes from the second sealing section 21 (that is, the distance between the first end of the marking ruler and the unit body 3 is greater than the distance between the first sealing section 11 and the unit body 3), and the second end close to the unit body 3 has a target mark, and the target mark is used to align with the target position on the unit body 3 when the first end of the marking ruler abuts against the battery cabinet 5. In this way, when the first end of the marking ruler abuts against the battery cabinet 5, the first sealing section 11 is about to be connected to the liquid inlet pipe of the battery cabinet 5. As the cooling unit continues to move and continues to approach the battery cabinet 5, when the first sealing section 11 is connected to the liquid inlet pipe of the battery cabinet 5, the marking ruler will slide relative to the unit body 3, so that the target mark is aligned with the target position on the unit body 3. In this way, the operator can also know in time when the cooling unit moves to the first docking position and stop pushing the cooling unit in time.

[0048] When the unit body 3 is provided with a blocking connector 4, the marking ruler can be slidably connected to the connecting hole on the blocking connector 4. When the exhaust is completed and the cooling unit needs to be further pushed to move, the marking ruler can be pulled out and removed.

[0049] Alternatively, in some embodiments, the positioning detection member may also be a proximity switch disposed at the first sealing section 11. In some other embodiments, an observation window may be provided on the battery cabinet 5, for example, an observation window through which the connection end of the liquid inlet pipe can be seen may be provided on the side wall of the concave cavity 501, so as to directly observe the docking position of the first connector 1, so that when the cooling unit moves to the first docking position, it can also stop in time.

[0050] The embodiment of the present application also provides an energy storage container, including a battery cabinet 5 and a cooling unit, and the cooling unit is the cooling unit described in any of the above embodiments. Since the energy storage container includes the above cooling unit, the beneficial effects of the energy storage container brought by the cooling unit refer to the above content and will not be repeated here.

[0051] Specifically, in some embodiments, the battery cabinet 5 has a concave cavity 501 for inserting the cooling unit, and the connecting end of the liquid inlet pipe and the connecting end of the liquid return pipe are both arranged on the bottom wall of the concave cavity 501. The connecting end of the liquid inlet pipe may be provided with a first female connector 502 corresponding to the first connector 1, and the connecting end of the liquid return pipe may be provided with a second female connector 503 corresponding to the second connector 2.

[0052] In some embodiments, such as Figure 7As shown, the distance between the first female connector 502 and the bottom wall of the cavity 501 is smaller than the distance between the second female connector 503 and the bottom wall of the cavity 501. This arrangement can shorten the dimension of the first sealing section 11 protruding from the second sealing section 21, and prevent the first connector 1 from being too long and easily broken by external forces during transportation. At the same time, it can also shorten the moving distance of the cooling unit from the first docking position to the second docking position, and speed up docking.

[0053] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0054] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0055] It should also be noted that in the device and apparatus of the present application, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as an equivalent solution of the present application.

[0056] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0057] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

[0058] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cooling unit, characterized in that: It comprises a machine body (3) and a first joint (1) and a second joint (2) arranged on the machine body (3). One end of the first joint (1) is connected to the liquid outlet pipe in the unit body (3), and the other end is provided with a first sealing section (11) for plugging and connecting with the liquid inlet pipe of the battery cabinet (5); one end of the second joint (2) is connected to the liquid return pipe in the unit body (3), and the other end is provided with a second sealing section (21) for plugging and connecting with the liquid return pipe of the battery cabinet (5); In the axial direction of the joint, the distance between the first sealing section (11) and the unit body (3) is greater than the distance between the second sealing section (21) and the unit body (3), so that when the cooling unit moves to a first docking position where the first sealing section (11) is initially connected to the liquid inlet pipe, the second sealing section (21) can have a distance from the liquid return pipe.

2. The cooling unit according to claim 1, characterized in that: The first joint (1) comprises a first connecting section (12) connected to the unit body (3) and the first sealing section (11) connected to the first connecting section (12); the second joint (2) comprises a second connecting section (22) connected to the unit body (3) and the second sealing section (21) connected to the second connecting section (22); and wherein: The axial length of the first connecting section (12) is greater than the axial length of the second connecting section (22), and / or the axial length of the first sealing section (11) is greater than the axial length of the second sealing section (21).

3. The cooling unit according to claim 1, characterized in that: The first sealing section (11) comprises at least two sealing grooves arranged at intervals and a sealing ring arranged in each of the sealing grooves; and / or the second sealing section (21) comprises at least two sealing grooves arranged at intervals and a sealing ring arranged in each of the sealing grooves.

4. The cooling unit according to claim 1, characterized in that: The first joint (1) is also provided with a third sealing section spaced apart from the first sealing section (11); the first sealing section (11) and the third sealing section are provided with one or more sealing grooves and sealing rings arranged in the sealing grooves.

5. The cooling unit according to claim 1 or 4, characterized in that: The first joint (1) is provided with a first stop step (101) for abutting against the end of the liquid inlet pipe of the battery cabinet (5); the first sealing section (11) and the third sealing section are located on a side of the first stop step (101) away from the unit body (3); And / or, the second joint (2) is provided with a second stop step (201) for abutting against the end of the liquid return pipe of the battery cabinet (5).

6. The cooling unit according to claim 1, characterized in that: A blocking connection member (4) is provided on the outer wall of the unit body (3), and the blocking connection member (4) is used to abut and connect with the battery cabinet (5) when the cooling unit moves to the second docking position, and a connection hole is provided on the blocking connection member (4); The second docking position is a position where the first sealing section (11) and the second sealing section (21) are both connected to the battery cabinet (5).

7. The cooling unit according to claim 1 or 6, characterized in that: A positioning detection member is also provided for checking whether the cooling unit moves to the first docking position.

8. The cooling unit according to claim 1, characterized in that: The cooling unit comprises a refrigerant pipeline, on which a grounded compressor and a heat exchanger for exchanging heat with the environment are arranged, and the liquid outlet pipe and the liquid return pipe are both connected to the refrigerant pipeline.

9. An energy storage container, characterized in that: It comprises a battery cabinet (5) and a cooling unit, wherein the cooling unit is the cooling unit according to any one of claims 1 to 8.

10. The energy storage container according to claim 9, characterized in that: The battery cabinet (5) is provided with a concave cavity (501) for the cooling unit to be placed in, the connecting end of the liquid inlet pipe and the connecting end of the liquid return pipe are both arranged on the bottom wall of the concave cavity (501), and the distance from the connecting end of the liquid inlet pipe to the bottom wall of the concave cavity (501) is smaller than the distance from the connecting end of the liquid return pipe to the bottom wall of the concave cavity (501).

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