A cooling unit and energy storage container

Abstract

The present application provides a cooling unit and an energy storage container. The cooling unit includes a unit body and a first joint and a second joint. One end of the first joint is connected to the liquid outlet pipe in the unit body, and the other end is provided with a first sealing section for plugging and connecting with the liquid inlet pipe of the battery cabinet. One end of the second joint is connected to the return liquid pipe in the unit body, and the other end is provided with a second sealing section for plugging and connecting with the return liquid 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 the first docking position where the first sealing section is initially connected to the liquid inlet pipe, the second sealing section can have a distance from the return liquid pipe. The cooling unit can conveniently discharge the air in the heat exchange plate during the connection process with the battery cabinet and when the heat exchange medium is filled into the heat exchange plate. The exhaust operation is simple and efficient, which can shorten the assembly time of the cooling unit and has a good exhaust effect.

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 converts other energy sources, such as solar energy, into electrical energy and stores it through energy storage devices. Its core components are energy storage batteries, inverters, and other auxiliary equipment. Temperature control of energy storage batteries is critical to ensuring the proper operation of the system, requiring high temperature control accuracy. A battery thermal management system typically includes heat exchange plates installed in the battery cabinet to exchange heat with the batteries, and a cooling unit installed outside the battery cabinet. During assembly, the piping on the cooling unit needs to be connected to the piping on the battery cabinet so that the heat exchange medium circulates through the heat exchange plates under the action of the cooling unit to regulate the battery temperature.

[0003] In the process of implementing this application, the inventors found that there are at least the following technical problems in the prior art: before assembly, the heat exchange plates and pipelines in the battery cabinet are in an empty state, and there is air inside. The air in the heat exchange plates must be discharged by vacuum extraction before the heat exchange medium can be filled in. The operation 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 the liquid outlet pipe in the unit body, and the other end is provided with a first sealing section for plugging and connecting with the liquid inlet pipe of the heat exchange plate in the battery cabinet; one end of the second joint is connected to the return liquid pipe in the unit body, and the other end is provided with a second sealing section for plugging and connecting with the return liquid pipe of the heat exchange plate in 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 distance from the return liquid pipe, so that heat exchange medium can be filled into the heat exchange plate and air in the heat exchange plate can be discharged through the pipe opening of the return liquid pipe, and when the heat exchange medium fills the heat exchange pipeline in the battery cabinet 5, the second sealing section can be moved to the second docking position connected to the return liquid pipe to complete the pipeline connection.

[0006] In one 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 one possible embodiment, the first sealing segment 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 segment includes at least two sealing grooves arranged at intervals and a sealing ring disposed in each of the sealing grooves.

[0008] In a possible embodiment, 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 provided in the sealing grooves.

[0009] In one possible embodiment, a first stop step is provided on the first joint for abutting against the end of the liquid inlet pipe of the battery cabinet, 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 is provided on the second joint for abutting against the end of the liquid return pipe of the battery cabinet.

[0010] In one 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 has moved 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 the 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 provided 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 is 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 return liquid pipe has not yet been connected to the battery cabinet. At this time, assembly is suspended, and the heat exchange medium is first filled into the battery cabinet. When the return liquid 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 return liquid pipe. When the heat exchange medium fills the heat exchange pipeline in the battery cabinet, for example, when the pipe mouth of the return liquid pipe begins 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 Shown is a first angle schematic diagram of the cooling unit in an embodiment of the present application;

[0017] Figure 2 Shown is a second angle schematic diagram of the cooling unit in an 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] Figures 1-8 :

[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 this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] Please refer to the attached Figures 1-8 The embodiment of the present application provides a cooling unit, which is used to connect to a battery cabinet 5 and provide a circulating heat exchange medium to the heat exchange plates in the battery cabinet 5. The cooling unit includes a unit body 3 and a first joint 1 and a second joint 2 provided on the unit body 3. The unit body 3 is provided with an outlet pipe for providing the heat exchange medium to the battery cabinet 5 and a return pipe for returning the heat exchange medium flowing out of the battery cabinet 5. The battery cabinet 5 is provided with an inlet pipe and a return pipe connected to each heat exchange plate. The inlet pipe is connected to the outlet pipe, and the return pipe is connected to the return pipe, so that the heat exchange medium circulates under the drive of the unit. In the present application, the outlet pipe is connected to the inlet pipe through the first joint 1, and the return pipe is connected to the return pipe through the second joint 2. Of course, corresponding female connectors can be provided on the inlet pipe and the return pipe. In this way, by pushing the cooling unit to make it close to the battery cabinet 5 along the axial direction of the joint, 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. Alternatively, the cooling unit includes a refrigerant pipeline, which is provided with a grounded compressor and a heat exchanger for exchanging heat with the environment, with both a liquid outlet pipe and a liquid return pipe connected to the refrigerant pipeline. The direct cooling unit provides refrigerant to the battery cabinet 5, exchanging heat with the batteries, resulting in high heat exchange efficiency.

[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 return liquid pipe in the unit body 3, and the other end is provided with a second seal for plugging and connecting with the return liquid pipe of the battery cabinet 5; the first sealing section 11 and the second sealing section 21 are both provided with sealing rings, 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 smaller 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. During assembly, the two connectors face the battery cabinet 5 in the same direction, with the first sealing section 11 closer to the battery cabinet 5. Therefore, when the cooling unit is pushed closer to the battery cabinet 5, the first sealing section 11 is inserted into the connection end of the battery cabinet 5's liquid inlet pipe first, connecting to the battery cabinet 5 before the second sealing section 21. At this point, there is a gap between the second sealing section 21 and the connection end of the battery cabinet 5's liquid return pipe. (It should be noted that at this point, the gap between the second sealing section 21 and the connection end of the liquid return pipe is present, meaning that the second sealing section 21 has not yet been inserted into the connection end of the liquid return pipe. However, since the second sealing section 21 can be positioned near the top of the second connector 2 near the liquid return pipe, it can also be positioned elsewhere. For example, if the top of the second connector 2 is a smooth pipe, the second sealing section 21 has a gap between it and the axial edge of the top. Therefore, at this first docking position, the top of the second connector 2 can be spaced apart from the connection end of the liquid return pipe or inserted into the connection end of the liquid return pipe. However, in any embodiment, the second sealing section 21 has not yet been inserted into the connection end of the liquid return pipe.) This position is referred to as the first docking position. When the cooling unit moves to this position, it pauses and heat exchange medium is introduced into the battery cabinet 5. Since the first sealing section 11 is already sealed to the battery cabinet 5's liquid inlet pipe, the heat exchange medium can flow normally into the heat exchange plates of the battery cabinet 5 without leakage. While the battery cabinet 5's liquid return pipe is open to the atmosphere, the heat exchange medium is introduced into the battery cabinet 5, effectively allowing air within the heat exchange plates to be discharged through the exhaust valve and the outlet of the liquid return pipe. When the heat exchange medium fills the heat exchange piping within the battery cabinet 5 (including the heat exchange plates, liquid return pipe, and liquid inlet pipe, etc.) (for example, when the exhaust valve on the battery cabinet 5 discharges steam or when heat exchange medium flows out of the outlet of the liquid return pipe), the cooling unit is further advanced to connect the second sealing section 21 of the second joint 2 to the battery cabinet 5, completing the pipeline connection. (The docking position, i.e., the position where both the first sealing section 11 and the second sealing section 21 are connected to the battery cabinet 5's piping, is referred to as the second docking position.) In this way, all the air in the heat exchange pipeline of the battery cabinet 5 can be discharged while the heat exchange medium is filled into the battery cabinet 5. 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 battery cabinet 5's pipelines are equipped with exhaust valves for discharging residual gas from the pipelines during the circulation of the heat exchange medium. In this application, by optimizing the cooling unit's structure, combined with the clever use of the exhaust valve during actual assembly, air can be exhausted from the heat exchange pipelines within the battery cabinet 5 as soon as the heat exchange medium is introduced into the battery cabinet 5. This eliminates the need to use a vacuum pump to evacuate the heat exchange plates before assembling the cooling unit. While ensuring effective exhaust, this effectively simplifies the exhaust operation, saves assembly time, and improves assembly efficiency.

[0032] Specifically, the first joint 1 includes a first connecting section 12 connected to the unit body 3 and a first sealing section 11 connected to the first connecting section 12. The second joint 2 includes a second connecting section 22 connected to the unit body 3 and a second sealing section 21 connected to the second connecting section 22. 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. This ensures that no matter which section of the first joint 1 is longer than the corresponding section of the second joint 2, the first sealing section 11 of the first joint 1 protrudes further 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. This allows the first sealing segment 11 to be effectively sealed to the liquid inlet pipe of the battery cabinet 5 in both the first and second docking positions. Furthermore, the axial length of the first connecting segment 12 is greater than the axial length of the second connecting segment 22, allowing the distance between the first sealing segment 11 and the unit body 3 to be adjusted in actual use to meet the application requirements of different scenarios and increase convenience.

[0034] The first sealing section 11 is located at the end of the first joint 1 away from the unit body 3 and at the end of the end. The second sealing section 21 is located at the end of the second joint 2 away from the unit body 3 and at the end 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 two or more 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 connector 1 is further provided with a third sealing segment spaced apart from the first sealing segment 11. Both the first sealing segment 11 and the third sealing segment are provided with at least one sealing ring. The first sealing segment 11 is configured to be sealedly connected to the liquid inlet pipe of the battery cabinet 5 in the first docking position, while the third sealing segment is configured to be sealedly connected to the liquid inlet pipe of the battery cabinet 5 in the second docking position. The distance between the third sealing segment and the unit body 3 can be the same as the distance between the second sealing segment 21 and the unit body 3.

[0038] In some embodiments, the first connector 1 is provided with a first stop step 101 for abutting 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 the side of the first stop step 101 away from the unit body 3. With 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 the end of the liquid inlet pipe of the battery cabinet 5. At this point, the operator can clearly know that the cooling unit is properly 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 seal.

[0039] Similarly, the second connector 2 is provided with a second stop step 201 for contacting the end of the liquid return pipe of the battery cabinet 5. In a preferred embodiment, both connectors are provided with a stop step. This arrangement 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 provided at the junction of the first connecting section 12 and the first sealing section 11. For example, if the diameter of the first connecting section 12 is larger than the diameter of the first sealing section 11, the first stop step 101 can be formed at the shaft shoulder. The second stop step 201 can be provided at the junction of the second connecting section 22 and the second sealing section 21. For example, if the diameter of the second connecting section 22 is larger than the diameter of the second sealing section 21, the second stop step 201 can be formed at the shaft shoulder.

[0041] A blocking connector 4 with a connection hole is provided on the outer wall of the unit body 3. The blocking connector 4 is used to abut and connect with the battery cabinet 5 when the cooling unit is moved to the second docking position. The second docking position is where both the first sealing section 11 and the second sealing section 21 are connected to the battery cabinet 5. Once the piping between the cooling unit and the battery cabinet 5 is connected, the blocking connector 4 secures the cooling unit to the battery cabinet 5 to prevent the cooling unit from sliding and disconnecting the piping connection when the battery cabinet 5 is moved.

[0042] Specifically, the blocking connector 4 can be a connecting plate. 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 or both sides of the unit body 3 in the second direction. Accordingly, the battery cabinet 5 is provided with a fixing plate 51 that abuts and connects to the connecting plate.

[0043] like Figure 4-Figure 7As shown, the battery cabinet 5 is usually provided with a recessed cavity 501 for accommodating the cooling unit. The cooling unit is inserted into the battery cabinet 5 from the cavity opening of the recessed cavity 501. The connection ends of the liquid inlet pipe and the liquid return pipe of the battery cabinet 5 are usually provided on the bottom wall of the recessed cavity 501. The pipe connection is completed by pushing the cooling unit toward the bottom of the recessed cavity 501. The direction from the cavity opening to the bottom wall of the recessed cavity 501 is the docking direction. The side wall of the recessed 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 together and abut against each other. 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 detecting when the cooling unit has moved to a first docking position; the first docking position is where the first sealing segment 11 is inserted into the connection end of the liquid inlet pipe and the second sealing segment 21 is spaced from the connection end of the liquid return pipe. This allows operators to promptly and conveniently detect when the cooling unit has moved to the first docking position, preventing the cooling unit from over-moving.

[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 in the first docking position. The end of the connecting rod, facing away from the unit body 3, is flush with the end of the first sealing section 11. This allows the operator to be promptly notified when the cooling unit moves to the first docking position by the abutment of the connecting rod against the battery cabinet 5. This also allows the cooling unit to be promptly and accurately fixed, preventing excessive movement. The connecting rod can be removed to fill the battery cabinet 5 with heat exchange medium. This does not affect the subsequent movement and docking of the cooling unit.

[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 ruler slidably disposed on the unit body 3. The ruler is disposed along the docking direction, with a first end distal from the unit body 3 protruding from the second sealing section 21 (i.e., the distance between the first end of the ruler and the unit body 3 is greater than the distance between the first sealing section 11 and the unit body 3). The second end proximal to the unit body 3 has a target mark. The target mark is used to align with a target position on the unit body 3 when the first end of the ruler abuts the battery cabinet 5. In this arrangement, when the first end of the ruler abuts the battery cabinet 5, the first sealing section 11 is about to connect with the liquid inlet pipe of the battery cabinet 5. As the cooling unit continues to move and approaches the battery cabinet 5, and the first sealing section 11 connects with the liquid inlet pipe of the battery cabinet 5, the ruler slides relative to the unit body 3, aligning the target mark with the target position on the unit body 3. In this way, the operator can promptly detect when the cooling unit has moved to the first docking position and stop pushing the cooling unit in a timely manner.

[0048] When the unit body 3 is provided with a blocking connector 4, the marking ruler can be slidably connected to the connection 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 be a proximity switch provided at the first sealing section 11. In still other embodiments, an observation window may be provided on the battery cabinet 5, for example, on the side wall of the recessed cavity 501 through which the connection end of the liquid inlet pipe can be viewed, so that the docking position of the first connector 1 can be directly observed. In this way, the cooling unit can be stopped promptly when it moves to the first docking position.

[0050] The present application also provides an energy storage container including a battery cabinet 5 and a cooling unit, wherein the cooling unit is the cooling unit described in any of the above embodiments. Since the energy storage container includes the cooling unit, the beneficial effects of the cooling unit on the energy storage container are described above and will not be further elaborated here.

[0051] Specifically, in some embodiments, the battery cabinet 5 has a recessed cavity 501 for inserting the cooling unit, and the connection ends of the liquid inlet pipe and the liquid return pipe are both disposed on the bottom wall of the recessed cavity 501. The connection end of the liquid inlet pipe may be provided with a first female connector 502 corresponding to the first connector 1, and the connection 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 protrusion of the first sealing section 11 from the second sealing section 21, preventing 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, speeding up docking.

[0053] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using 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, or configured in the manner shown in the accompanying drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, or configured in any manner. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0055] It should also be noted that in the devices and equipment of the present application, the components can be decomposed and / or reassembled, and such decompositions and / or reassemblies should be regarded as equivalent solutions 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 be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0057] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, 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 replacements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A cooling unit, characterized in that: It comprises a unit body (3) and a first joint (1) and a second joint (2) arranged on the unit 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); Heat exchange plates are provided in the battery cabinet (5), and each heat exchange plate is connected to a liquid inlet pipe and a liquid return pipe in 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); when the cooling unit moves to the 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, so that the heat exchange medium can be filled into the heat exchange plate and the air in the heat exchange plate can be discharged through the pipe opening of the liquid return pipe. When the heat exchange medium fills the heat exchange pipeline in the battery cabinet (5), the second sealing section (21) can be moved to the second docking position connected to the liquid return pipe to complete the pipeline connection; 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).

2. The cooling unit according to claim 1, wherein: The first joint (1) comprises a first connecting section (12) connected to the unit body (3) and a 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 a 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, wherein: The first sealing section (11) comprises 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 (21) comprises at least two sealing grooves arranged at intervals and a sealing ring disposed in each of the sealing grooves.

4. The cooling unit according to claim 1, wherein: The first joint (1) is further provided with a third sealing segment spaced apart from the first sealing segment (11); the first sealing segment (11) and the third sealing segment are provided with one or more sealing grooves and sealing rings provided 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 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).

6. The cooling unit according to claim 1, wherein: A blocking connection piece (4) is provided on the outer wall of the unit body (3), and the blocking connection piece (4) is used to abut and connect with the battery cabinet (5) when the cooling unit moves to the second docking position. A connection hole is provided on the blocking connection piece (4).

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

8. The cooling unit according to claim 1, wherein: The cooling unit includes a refrigerant pipeline. A grounded compressor and a heat exchanger for exchanging heat with the environment are provided on the refrigerant pipeline. 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 therein, the connecting end of the liquid inlet pipe and the connecting end of the liquid return pipe are both provided 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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