Cooling assembly and energy storage device

Abstract

The utility model discloses a cooling assembly and an energy storage device, the cooling assembly comprises a support structure, the support structure is suitable for bearing a first battery module, the support structure is provided with a liquid passing hole, and the liquid passing hole is suitable for conducting a cooling medium so as to dissipate heat of the first battery module. The supporting structure not only can bear the first battery module, but also can be used as a part of the liquid inlet pipeline to cool and dissipate heat of the first battery module, so that the supporting structure is used as a common structure, the overall structure of the energy storage device can be simple, the flow direction of a cooling medium can be controlled more accurately, and the internal disordered pipeline arrangement can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage device technical field especially is related to a cooling assembly and energy storage device. BACKGROUND

[0002] In the related art, the energy storage device includes a cabinet body and a battery module. The battery module can store energy. The cabinet body is provided with a receiving cavity. The battery module is generally provided with a plurality of battery modules. The plurality of battery modules are arranged in the receiving cavity inside the cabinet body. The cabinet body is provided with a ventilation opening. Airflow can enter the cabinet body through the ventilation opening. The battery module is mainly cooled by air cooling. However, the air cooling method has low heat dissipation efficiency and poor heat dissipation effect of the battery module. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, the utility model provides a cooling assembly. The cooling assembly has a simple structure, accurate control of the flow direction of the cooling medium, and can reduce the internal clutter of the pipeline arrangement.

[0004] The utility model further provides an energy storage device.

[0005] According to the cooling assembly of the utility model, the support structure is adapted to carry the first battery module. The support structure is provided with a liquid passing hole. The liquid passing hole is adapted to conduct the cooling medium to dissipate heat of the first battery module. The first battery module is cooled by the cooling medium, and the heat dissipation efficiency is high.

[0006] According to the cooling assembly of the utility model, the support structure can carry the first battery module and also can be used as part of the liquid inlet pipeline to conduct the cooling medium to cool and dissipate heat of the first battery module by the cooling medium. The support structure as a common structure can make the overall structure of the energy storage device simple, the flow direction of the cooling medium more accurate, and the internal clutter of the pipeline arrangement reduced.

[0007] In some examples of the utility model, the support structure includes a first pipe segment and a second pipe segment. At least two second pipe segments are connected to both ends of the first pipe segment. The at least two second pipe segments are spaced apart along the extension direction of the first pipe segment.

[0008] In some examples of the utility model, the second pipe segment is provided with a plurality of liquid outlet holes. The plurality of liquid outlet holes are spaced apart in the extension direction of the second pipe segment.

[0009] In some examples of the utility model, the flow area of the plurality of liquid outlet holes gradually increases in the direction away from the first pipe segment.

[0010] In some examples of the present application, at least two of the second pipe segments are arranged in parallel, and the plane formed by the at least two second pipe segments (203) and the first pipe segment is adapted to carry the first battery module.

[0011] In some examples of the present application, the cooling assembly further comprises a first strengthening beam pipe extending in the up-down direction, and the first strengthening beam pipe is internally provided with a liquid passing hole, and the first strengthening beam pipe is in communication with the first pipe segment.

[0012] In some examples of the present application, the cooling assembly further comprises a liquid inlet pipe assembly, which comprises a first liquid inlet pipe, the first liquid inlet pipe is in communication with the first pipe segment, and the cooling medium enters the first pipe segment through the first liquid inlet pipe to exchange heat with the first battery module.

[0013] In some examples of the present application, the liquid inlet pipe assembly further comprises a second liquid inlet pipe connected between the first strengthening beam pipe and the first pipe segment.

[0014] In some examples of the present application, the first liquid inlet pipe and / or the second liquid inlet pipe are configured in a hose structure.

[0015] In some examples of the present application, the cooling assembly further comprises a second strengthening beam pipe, the second strengthening beam pipe is in communication with the second pipe segment, and the cooling medium is discharged through the second strengthening beam pipe.

[0016] In some examples of the present application, the second strengthening beam pipe comprises a first liquid return pipe, a second liquid return pipe and a third liquid return pipe, the first liquid return pipe extends in the up-down direction, and the inlet of the first liquid return pipe is arranged opposite to the outlet of at least one of the second pipe segments, and the second liquid return pipe is connected between the first liquid return pipe and the third liquid return pipe.

[0017] According to the energy storage device of the present application, comprising: a cabinet body; a first battery module arranged in the cabinet body; the above-mentioned cooling assembly, the support structure is arranged in the cabinet body, and the first battery module is fixed on the support structure.

[0018] In some examples of the present application, the energy storage device further comprises a first strengthening beam pipe fixed to the side wall of the cabinet body, a first liquid return pipe extending in the up-down direction and fixed to the side wall of the cabinet body, and a second liquid return pipe fixed to the bottom wall of the cabinet body.

[0019] In some examples of the present application, the energy storage device further comprises: a second battery module, the first battery module and the second battery module are stacked, and the support structure is arranged between the first battery module and the second battery module.

[0020] In some examples of the present application, the side wall of the cabinet body is provided with a support beam, and the support beam is adapted to support the second battery module.

[0021] In some examples of the present application, the side wall of the cabinet body is further provided with a limiting piece, and the limiting piece is limited in cooperation with the first battery module or the second battery module.

[0022] In some examples of the present application, the cooling medium is in contact with the first battery module and the second battery module.

[0023] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0025] Figure 1 is a first structure schematic view of the energy storage device according to the embodiment of the present application;

[0026] Figure 2 is a first partial structure schematic view of the energy storage device according to the embodiment of the present application;

[0027] Figure 3 is a second partial structure schematic view of the energy storage device according to the embodiment of the present application;

[0028] Figure 4 is a structure schematic view of the second pipe section;

[0029] Figure 5 is an interlayer liquid flow path schematic view of the energy storage device according to the embodiment of the present application;

[0030] Figure 6 is a partial enlarged schematic view of the interlayer liquid flow path of the energy storage device according to the embodiment of the present application;

[0031] Figure 7 is a height direction liquid flow schematic view of the energy storage device according to the embodiment of the present application;

[0032] Figure 8 is an explosion view of the battery module structure;

[0033] Figure 9 is a schematic diagram of an inter-battery module flow field;

[0034] Figure 10 is a schematic diagram of a height direction flow field of the energy storage device according to an embodiment of the present application;

[0035] Figure 11 is a temperature contour diagram of a battery cell interlayer;

[0036] Figure 12 is a third partial structure schematic diagram of the energy storage device according to an embodiment of the present application;

[0037] Figure 13 is a fourth partial structure schematic diagram of the energy storage device according to an embodiment of the present application;

[0038] Figure 14 is a second structure schematic diagram of the energy storage device according to an embodiment of the present application.

[0039] Reference signs:

[0040] 1. An energy storage device;

[0041] 10. A cabinet body; 100, a first reinforcing beam pipe; 101, a second reinforcing beam pipe; 102, a first return liquid pipe; 103, a second return liquid pipe; 104, a third return liquid pipe; 105, a support beam; 106, a limiting piece; 20, a battery module; 200, a first battery module; 201, a support structure; 202, a first pipe section; 203, a second pipe section; 204, a liquid outlet hole; 205, a second battery module; 30, a liquid inlet pipe assembly; 300, a first liquid inlet pipe; 301, a second liquid inlet pipe. DETAILED DESCRIPTION

[0042] The embodiments of the present application will be described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present application will be described in detail below.

[0043] The following will be described with reference to Figures 1-14 The energy storage device 1 according to an embodiment of the present application can be a battery energy storage device.

[0044] As shown in Figures 1-3 , Figure 5 and Figure 7 , the energy storage device 1 according to an embodiment of the present application comprises a cabinet body 10 and a battery module 20. The cabinet body 10 is the main component of the energy storage device 1, which can be used to install components, ensure relative position accuracy and protect internal components, and the battery module 20 can mainly perform battery monomer assembly management, thermal management, safety protection, battery assembly and connection.

[0045] As shown in Figures 1-3 ,Figure 5 and Figures 8-9 and Figure 11 As shown in the figure, the battery module 20 comprises a first battery module 200, a second battery module 205 and a cooling assembly, the cooling assembly comprises a support structure 201 and a liquid inlet pipe assembly 30, the first battery module 200, the second battery module 205 and the support structure 201 are arranged in the cabinet 10, the first battery module 200 is fixed on the support structure 201, and the support structure 201 is adapted to bear the first battery module 200. Wherein, the support structure 201 can be arranged as a support frame or a structure combined with multiple trays, the first battery module 200 can be directly placed on the support structure 201, the support structure 201 can be arranged as a clamping fixed structure, and the first battery module 200 can be directly clamped and fixed on the support structure 201, so that the arrangement of the first battery module 200 is more convenient and stable. The liquid inlet pipe assembly 30 can mainly guide the cooling medium into the cabinet 10, so that the battery module 20 is completely immersed in the cooling medium, thereby realizing heat exchange with the battery module 20. Wherein, the first battery module 200 and the second battery module 205 can be batteries or module structures composed of multiple battery cells.

[0046] Specifically, the first battery module 200 and the support structure 201 are arranged in the cabinet 10, at this time the space of the cabinet 10 can be reasonably utilized, the space occupation is reduced, thereby the space arrangement problem of the energy storage device 1 can be solved, the first battery module 200 and the second battery module 205 are the core components inside the battery module 20, which can play a role in storing electrical energy, the support structure 201 mainly plays a supporting role, the first battery module 200 is fixed on the support structure 201, which facilitates the installation and arrangement of the first battery module 200 on the support structure 201, and makes the arrangement of the first battery module 200 more firm and reliable, facilitating the installation and arrangement of the battery module 20.

[0047] The support structure 201 is provided with a liquid passing hole adapted to communicate the cooling medium to cool the first battery module 200 and the second battery module 205, and the liquid inlet pipe assembly 30 comprises a first liquid inlet pipe 300, the first liquid inlet pipe 300 is in communication with the support structure 201, and the cooling medium enters the support structure 201 through the first liquid inlet pipe 300 to exchange heat with the first battery module 200 and the second battery module 205.

[0048] Specifically, the first liquid inlet pipe 300 is the main component of the liquid inlet pipe assembly 30, the first liquid inlet pipe 300 can mainly guide the cooling medium into the cabinet 10, the first liquid inlet pipe 300 is in communication with the support structure 201, so that the cooling medium can enter the liquid passing hole of the support structure 201 through the first liquid inlet pipe 300 to exchange heat with the first battery module 200 and the second battery module 205.

[0049] It should be noted that the inside of the cabinet body 10 is a closed cavity for filling cooling medium, and two openings are provided at the bottom for connecting with the outside liquid inlet and liquid return. The support structure 201 itself is a bottom beam for fixing the first battery module 200, and is communicated with the support structure 201 by the first liquid inlet pipe 300. The inside of the support structure 201 is filled with cooling medium to cool the end surface of the first battery module 200. The conventional liquid cooling pipe such as a serpentine pipe is cancelled to realize effective utilization of the space between the first battery module 200 layers and improve the energy density. The first battery module 200 and the support structure 201 can be connected by bolts, which is convenient to install and disassemble, has strong practicality and reliable structure.

[0050] Therefore, the support structure 201 can be both a mounting reinforcing structure in the battery module 20 and a part of the liquid inlet pipe. The support structure 201 serves as a common structure, which can make the overall structure of the energy storage device 1 simple, control the flow direction of the cooling medium more accurately, reduce the internal messy pipe arrangement, and reduce the risk of shell pressure when the battery module 20 is immersed in the cooling medium.

[0051] Specifically, as shown in Figure 3 and Figure 8 , the support structure 201 comprises a first pipe section 202 and a second pipe section 203. The first liquid inlet pipe 300 is communicated with the first pipe section 202. At least two second pipe sections 203 are connected to both ends of the first pipe section 202. When there are two second pipe sections 203, the first pipe section 202 and the second pipe section 203 form a U-shaped structure. The first pipe section 202 and the second pipe section 203 are components of the support structure 201 and can control the flow direction of the cooling medium. The first liquid inlet pipe 300 is communicated with the first pipe section 202, so that the cooling medium can enter the first pipe section 202 through the first liquid inlet pipe 300 and the first pipe section 202 to exchange heat with the first battery module 200 and the second battery module 205. At least two second pipe sections 203 are connected to both ends of the first pipe section 202. At this time, the first pipe section 202 and the second pipe section 203 form a whole, which is convenient for the installation and setting of the support structure 201. When there are two second pipe sections 203, the first pipe section 202 and the second pipe section 203 form a U-shaped structure, which is convenient for the overall setting of the support structure 201 and adapts to the structure of the first battery module 200. Moreover, this can make the arrangement range of the support structure 201 as large as possible, so as to increase the flow path of the cooling medium and improve the heat exchange effect.

[0052] As shown in Figure 3 and Figure 8As shown, the at least two second pipe segments 203 are arranged in parallel, and the plane formed by the first pipe segment 202 and the at least two second pipe segments 203 is adapted to carry the first battery module 200. That is, the first pipe segment 202 and the at least two second pipe segments 203 can form a common plane, and the first battery module 200 can be fixed on the common plane, so as to support the first battery module 200. In this way, the support structure 201 can serve as both a mounting reinforcing structure in the battery module 20 and a part of the liquid inlet pipe, and the support structure 201 serves as a common structure, so that the overall structure of the energy storage device 1 is simple, the flow direction of the cooling medium is more accurate, and the internal pipe arrangement is less cluttered.

[0053] As shown in Figure 3 and Figure 4 , a plurality of liquid outlet holes 204 are arranged on the second pipe segment 203, and the plurality of liquid outlet holes 204 are arranged at intervals in the extension direction of the second pipe segment 203. The plurality of liquid outlet holes 204 are arranged on the second pipe segment 203, so that the cooling medium can be sprayed out of the liquid outlet hole 204 to the surface of the first battery module 200 and the second battery module 205, so that the cooling medium can be in direct contact with the first battery module 200 and the second battery module 205, and the first battery module 200 and the second battery module 205 can be effectively and uniformly cooled. The plurality of liquid outlet holes 204 are arranged at intervals, so as to avoid interference between the plurality of liquid outlet holes 204, and the distribution range of the plurality of liquid outlet holes 204 is wider, and the uniform cooling effect of the first battery module 200 and the second battery module 205 can be improved to a certain extent. For example, the position of the liquid outlet hole 204 can be arranged at about 1 / 10, 2 / 10, 3 / 10, 4 / 10, 6 / 10, 7 / 10, 8 / 10, or 9 / 10 of the total length of the first battery module 200 or the second battery module 205.

[0054] It should be noted that, as shown in Figure 10 , Figure 12 and Figure 13As shown, in addition to direct injection, the cooling medium can be ejected out of the liquid outlet hole 204 in various ways, such as: oblique injection, controlling the opening and closing position of the liquid outlet hole 204 on the basis of oblique injection, controlling the direct injection flow rate, controlling the opening and closing position of the liquid outlet hole 204, the above-mentioned opening hole modes can form an S-shaped turbulent flow area, and improve the heat dissipation efficiency; control one side direct injection and one side oblique injection, control the opening and closing of the liquid outlet hole 204, staggered injection, on the basis of staggered injection, control the flow rate of the liquid outlet hole 204, so as to form a circulation area around each liquid outlet hole 204, on the basis of direct injection, increase two liquid outlet holes 204 from front to back, these opening hole modes increase the disturbance of the internal cooling medium, and reduce the generation of circulation dead zones; design two groups of flow channels with different lengths, which can realize the heat dissipation disturbance of the first battery module 200 and the second battery module 205 with specific structure and purpose; on the basis of direct injection, the injection direction of the two sides of the flow channel can be adjusted to form a clockwise circulating injection, or a full-range injection. This injection mode can form a certain degree of turbulence between the upper and lower first battery module 200 and the second battery module 205, and improve the heat dissipation efficiency.

[0055] In addition, as shown in Figure 3 and Figure 4 , in the direction away from the first pipe section 202, the flow area of the plurality of liquid outlet holes 204 gradually increases. When the cooling medium flows from front to back in the second pipe section 203, the flow rate becomes smaller and smaller, and the flow area of the liquid outlet hole 204 gradually increases, which can increase the flow area. This special size of the liquid outlet hole 204 can offset the change of the flow rate, so that the flow rate of the cooling medium in the length direction of the second pipe section 203 is basically consistent, and the uniformity control of the second pipe section 203 in the length direction is realized.

[0056] For example, when the number of liquid outlet holes 204 is eight, in the direction away from the first pipe section 202, the flow area of the eight liquid outlet holes 204 gradually increases, or the flow area of the front four liquid outlet holes 204 is the same, the flow area of the rear four liquid outlet holes 204 is the same, the flow area of the rear four liquid outlet holes 204 is larger than that of the front four liquid outlet holes 204. Of course, the flow area of the plurality of liquid outlet holes 204 can also be set in other reasonable ways.

[0057] Of course, as shown in Figure 3 , Figure 5 and Figure 14As shown, the energy storage device 1 further comprises: a first reinforced beam pipe 100 fixed to the side wall of the cabinet body 10, the first reinforced beam pipe 100 is internally provided with a liquid passing hole, and the first reinforced beam pipe 100 is connected between the first liquid inlet pipe 300 and the first pipe section 202. The first reinforced beam pipe 100 is fixed to the side wall of the cabinet body 10, and the first reinforced beam pipe 100 can mainly play a reinforcing role for the side wall of the cabinet body 10. The first reinforced beam pipe 100 is internally provided with a liquid passing hole, and the first reinforced beam pipe 100 is connected between the first liquid inlet pipe 300 and the first pipe section 202. At this time, the first reinforced pipe 100 can serve as a channel for the flow of the cooling medium. The cooling medium can enter the first reinforced beam pipe 100 through the first liquid inlet pipe 300, and then enter the first pipe section 202 through the first reinforced beam pipe 100, so that the first reinforced beam pipe 100 can be used as a pipe. The additional pipe connection can be avoided. The first reinforced beam pipe 100 and the side wall of the cabinet body 10 can be welded by a special welding machine. In this way, the weld can be smooth, the size can be accurate, the structure can be simple and generous, and the connection between the first reinforced beam pipe 100 and the cabinet body 10 can be firm and reliable. The first reinforced beam pipe 100 can be made of standard hollow steel.

[0058] Further, as shown in Figure 3 、 Figure 5 and Figure 14 , the first reinforced beam pipe 100 extends in the up-down direction. In the first reinforced beam pipe 100, the cooling medium flows from bottom to top, which causes the cooling medium pressure in the pipe to decrease as it goes up. At the same time, the cooling medium at the bottom of the pipe is subjected to external hydrostatic pressure because the entire cavity of the first reinforced beam pipe 100 is immersed in the cooling medium, which causes the external pressure of the first reinforced beam pipe 100 to decrease as it goes up. In this way, the pressure difference between the inside and outside of the first reinforced beam pipe 100 is maintained to a certain extent in the height direction. Under the condition of the internal and external pressure difference, the flow rate of the cooling medium flowing out of the first reinforced beam pipe 100 is basically consistent in the height direction, achieving uniform temperature control in the height direction.

[0059] In addition, as shown in Figure 3 and Figure 5 , the liquid inlet pipe assembly 30 further comprises: a second liquid inlet pipe 301 connected between the first reinforced beam pipe 100 and the support structure 201. The second liquid inlet pipe 301 is a component of the liquid inlet pipe assembly 30 and mainly serves to guide the flow of the cooling medium. The second liquid inlet pipe 301 is connected between the first reinforced beam pipe 100 and the support structure 201, which can connect the first reinforced beam pipe 100 and the support structure 201, thereby realizing the flow of the cooling medium from the first reinforced beam pipe 100 into the support structure 201.

[0060] It should be noted that, as shown in Figure 3 and Figure 5As shown, the first liquid inlet pipe 300 and / or the second liquid inlet pipe 301 is configured as a hose structure. The hose structure has good flexibility, corrosion resistance, sealing and heat insulation, and the first liquid inlet pipe 300 and / or the second liquid inlet pipe 301 is configured as a hose structure, so that the structure of the first liquid inlet pipe 300 and / or the second liquid inlet pipe 301 can be more in line with the actual working conditions.

[0061] In addition, as shown in Figure 3 , Figure 8 and Figure 14 , the energy storage device 1 further comprises a second reinforcing beam pipe 101, which communicates with the second pipe section 203, and the cooling medium is discharged through the second reinforcing beam pipe 101. The second reinforcing beam pipe 101 can mainly play a reinforcing role on the side wall and the bottom wall of the cabinet body 10, and the second reinforcing beam pipe 101 communicates with the second pipe section 203, and the cooling medium is discharged through the second reinforcing beam pipe 101. At this time, the second reinforcing beam pipe 101 can serve as a channel for the flow of the cooling medium, and the second reinforcing beam pipe 101 can realize one pipe with two purposes, avoiding additional pipe connection, in addition, by communicating the second reinforcing beam pipe 101 with the second pipe section 203, the cooling medium at the corner position can also flow in the direction of the second reinforcing pipe 101, thereby reducing the flow dead zone.

[0062] Optionally, as shown in Figure 3 , the second reinforcing beam pipe 101 comprises a first liquid return pipe 102, a second liquid return pipe 103 and a third liquid return pipe 104, the first liquid return pipe 102 extends in the up-down direction and is fixed to the side wall of the cabinet body 10, and the inlet of the first liquid return pipe 102 is arranged opposite to the outlet of at least one of the second pipe sections 203, the second liquid return pipe 103 is fixed to the bottom wall of the cabinet body 10, and the second liquid return pipe 103 is connected between the first liquid return pipe 102 and the third liquid return pipe 104.

[0063] It should be noted that the first liquid return pipe 102, the second liquid return pipe 103 and the third liquid return pipe 104 can all play a role in controlling the flow direction of the cooling medium, the first liquid return pipe 102 is fixed to the side wall of the cabinet body 10 in the up-down direction, at this time the first liquid return pipe 102 can play a reinforcing role on the side wall of the cabinet body 10, the inlet of the first liquid return pipe 102 is arranged opposite to the outlet of at least one of the second pipe sections 203, at this time the cooling medium flows from at least one of the second pipe sections 203 into the first liquid return pipe 102, thereby realizing the circulating flow of the cooling medium inside the cabinet body 10, the second liquid return pipe 103 is fixed to the bottom wall of the cabinet body 10, at this time the second liquid return pipe 103 can play a reinforcing role on the bottom wall of the cabinet body 10, and the second liquid return pipe 103 is connected between the first liquid return pipe 102 and the third liquid return pipe 104, at this time the first liquid return pipe 102, the second liquid return pipe 103 and the third liquid return pipe 104 form an integral whole, facilitating the installation and arrangement of the second reinforcing beam pipe 101.

[0064] The first reinforcing beam pipe 100 and the side wall of the cabinet 10, and the second liquid return pipe 103 and the bottom wall of the cabinet 10 can be welded by a special welding machine, so that the weld is flat, the size is accurate, the structure is simple and generous, and the connection between the first reinforcing beam pipe 100, the second liquid return pipe 103 and the cabinet 10 is firm and reliable. The first liquid return pipe 102, the second liquid return pipe 103 and the third liquid return pipe 104 can be made of standard hollow steel. The number of the first liquid return pipe 102 can be two, corresponding to two second liquid return pipes 103, and the second liquid return pipes 103 converge into one at the bottom wall of the cabinet 10.

[0065] In addition, as shown in Figure 13 The first battery module 200 and the second battery module 205 are stacked, and the support structure 201 is arranged between the first battery module 200 and the second battery module 205. It can be understood that the first battery module 200 and the second battery module 205 are stacked, which is convenient to arrange and can reduce the overall volume of the energy storage device 1. The support structure 201 is arranged between the first battery module 200 and the second battery module 205, which can support the support structure 201 between the first battery module 200 and the second battery module 205, and can better play a supporting role. The support structure 201 can cool and heat the first battery module 200 and the second battery module 205, thereby improving the heat dissipation effect of the battery.

[0066] According to an optional embodiment of the utility model, as shown in Figure 13 The side wall of the cabinet 10 is provided with a support beam 105, and the support beam 105 is suitable for supporting the second battery module 205. The support beam can play a supporting role, and the support beam 105 can support the second battery module 205, thereby making the arrangement of the second battery module 205 more stable and reliable.

[0067] Optionally, as shown in Figure 13 The side wall of the cabinet 10 is also provided with a limiting piece 106, and the limiting piece 106 is limited in cooperation with the first battery module 200 or the second battery module 205. The limiting piece 106 mainly plays a limiting role, and the limiting piece 106 is limited in cooperation with the first battery module 200 or the second battery module 205, which can limit the movement of the first battery module 200 or the second battery module 205, avoid displacement of the first battery module 200 or the second battery module 205, and thereby make the arrangement of the first battery module 200 or the second battery module 205 more stable and reliable.

[0068] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0069] In the description of the utility model, "first feature", "second feature" can include one or more features. In the description of the utility model, "multiple" means two or more. In the description of the utility model, "above" or "below" the first feature of the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. In the description of the utility model, "above", "above" and "above" of the first feature of the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0070] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0071] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A cooling assembly, characterized by Comprise: Support structure (201), the support structure (201) is suitable for carrying first battery module (200), the support structure (201) is provided with liquid hole, the liquid hole is suitable for the cooling medium to be led to the first battery module (200) and be dissipated heat; Wherein, the support structure (201) comprises: First pipe section (202) and second pipe section (203), at least two second pipe sections (203) are connected to the two ends of the first pipe section (202) respectively, and the at least two second pipe sections (203) are spaced apart along the extension direction of the first pipe section (202); Multiple liquid outlets (204) are arranged on the second pipe section (203), and multiple liquid outlets (204) are spaced apart in the extension direction of the second pipe section (203); In the direction away from the first pipe section (202), the flow area of multiple liquid outlets (204) gradually increases.

2. Cooling assembly according to claim 1, characterized in that At least two second pipe sections (203) are arranged in parallel, and the plane formed by at least two second pipe sections (203) and the first pipe section (202) is suitable for carrying the first battery module (200).

3. Cooling assembly according to claim 2, characterized in that Further comprise: First reinforced beam pipe (100), the first reinforced beam pipe (100) extends in the up-down direction, the first reinforced beam pipe (100) is provided with liquid hole inside, and the first reinforced beam pipe (100) is communicated with the first pipe section (202).

4. The cooling assembly of claim 1, wherein, Further comprise: Liquid inlet pipe assembly (30), the liquid inlet pipe assembly (30) comprises: first liquid inlet pipe (300), the first liquid inlet pipe (300), the first liquid inlet pipe (300) is communicated with the first pipe section (202), and the cooling medium enters the first pipe section (202) through the first liquid inlet pipe (300) to exchange heat with the first battery module (200).

5. Cooling assembly according to claim 4, characterized in that The liquid inlet pipe assembly (30) further comprises: Second liquid inlet pipe (301), the cooling assembly further comprises: first reinforced beam pipe (100), and the second liquid inlet pipe (301) is connected between the first reinforced beam pipe (100) and the first pipe section (202).

6. Cooling assembly according to claim 5, characterized in that The first liquid inlet pipe (300) and / or the second liquid inlet pipe (301) are configured as a hose structure.

7. The cooling assembly of claim 1, wherein, Further comprise: Second reinforced beam pipe (101), the second reinforced beam pipe (101) is communicated with the second pipe section (203), and the cooling medium is discharged through the second reinforced beam pipe (101).

8. Cooling assembly according to claim 7, characterized in that The second reinforced beam pipe (101) comprises: First return liquid pipe (102), second return liquid pipe (103) and third return liquid pipe (104), the first return liquid pipe (102) extends in the up-down direction, and the inlet of the first return liquid pipe (102) is arranged opposite to the outlet of at least one second pipe section (203), and the second return liquid pipe (103) is connected between the first return liquid pipe (102) and the third return liquid pipe (104).

9. An energy storage device (1) characterised in that, Comprise: Cabinet body (10); First battery module (200), the first battery module (200) is arranged in the cabinet body (10); The cooling assembly of any one of claims 1-8, wherein the support structure (201) is disposed within the cabinet (10), and the first battery module (200) is fixed to the support structure (201).

10. The energy storage device (1) according to claim 9, characterized in that Further comprising: a first reinforcing beam tube (100) fixed to a side wall of the cabinet (10); a first return liquid tube (102) extending in an up-down direction and fixed to the side wall of the cabinet (10); a second return liquid tube (103) fixed to a bottom wall of the cabinet (10).

11. The energy storage device (1) according to claim 9, characterized in that Further comprising: a second battery module (205) stacked with the first battery module (200), and the support structure (201) is disposed between the first battery module (200) and the second battery module (205).

12. The energy storage device (1) according to claim 11, characterized in that A side wall of the cabinet (10) is provided with a support beam (105) adapted to support the second battery module (205).

13. The energy storage device (1) according to claim 11, characterized in that The side wall of the cabinet (10) is further provided with a limiting piece (106) limiting cooperation with the first battery module (200) or the second battery module (205).

14. The energy storage device (1) according to claim 11, characterized in that The cooling medium is in contact with the first battery module (200) and the second battery module (205).

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