Liquid cooling assembly and battery pack

Abstract

Provided in the present application are a liquid cooling assembly and a battery pack. The liquid cooling assembly comprises: a plurality of liquid cooling plates, which are sequentially arranged spaced apart, wherein a mounting space configured to mount a heating body therein is provided between every two adjacent liquid cooling plates, and each liquid cooling plate is provided with a circulation channel and a liquid inlet in communication with the circulation channel; and a liquid-intake main pipe, which is provided with a plurality of first connection ports, wherein the plurality of first connection ports correspond to the plurality of liquid inlets on a one-to-one basis, a first connection pipe is connected between each first connection port and each liquid inlet, and the first connection pipe is at least partly flexible.

Description

Liquid cooling components and battery packs

[0001] This application claims priority to the Chinese patent application with application number 202322613031.1 filed with the China Patent Office on September 25, 2023. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a liquid cooling assembly and a battery pack. Background Art

[0003] Liquid cooling plates are widely used in batteries. Their primary function is to cool the battery by circulating coolant, thereby maintaining a stable battery temperature. Liquid cooling plates typically use nylon tubing to connect the liquid inlet pipe. SUMMARY OF THE INVENTION

[0004] However, due to tolerances in the connection process, assembly of the liquid inlet pipe and the liquid cooling plate is difficult, which can easily cause leakage in the liquid inlet pipe and the liquid cooling plate, thereby reducing cooling efficiency and ultimately causing damage to the battery due to excessive temperature.

[0005] The present application provides a liquid cooling assembly, comprising: a plurality of liquid cooling plates, the plurality of liquid cooling plates being arranged in sequence at intervals, with an installation space for installing a heating element formed between adjacent liquid cooling plates, each of the liquid cooling plates having a circulation channel and a liquid inlet connected to the circulation channel; a liquid inlet main pipe, the liquid inlet main pipe having a plurality of first pairing interfaces, the plurality of first pairing interfaces corresponding one-to-one to the plurality of liquid inlets; wherein a first pairing pipe is connected between the first pairing interfaces and the liquid inlet, and the first pairing pipe is at least partially flexible.

[0006] The present application also provides a battery pack comprising the above-mentioned liquid cooling assembly. Beneficial effects

[0007] The liquid cooling assembly provided in the present application provides a first butt joint pipe between the liquid cooling plate and the liquid inlet main pipe. Since the first butt joint pipe is at least partially flexible, it can absorb the tolerance of the liquid inlet main pipe and the liquid cooling plate during the connection process, thereby simplifying the assembly of the liquid inlet main pipe and the liquid cooling plate, ensuring the reliability of the connection between the liquid inlet main pipe and the liquid cooling plate, avoiding leakage between the liquid inlet pipe and the liquid cooling plate, and thus avoiding the phenomenon of reduced cooling efficiency due to leakage.

[0008] In the battery pack provided in the present application, the liquid cooling plate is connected to the liquid inlet main pipe through a first butt joint pipe. Since the first butt joint pipe is at least partially flexible, the tolerance of the liquid inlet main pipe and the liquid cooling plate can be absorbed during the connection process, thereby simplifying the assembly of the liquid inlet main pipe and the liquid cooling plate, and ensuring the reliability of the connection between the liquid inlet main pipe and the liquid cooling plate, thereby avoiding leakage between the liquid inlet pipe and the liquid cooling plate, and further avoiding the phenomenon of reduced cooling efficiency due to leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is a first perspective schematic diagram of a liquid cooling assembly provided by the present application;

[0010] FIG2 is a second perspective schematic diagram of the liquid cooling assembly provided by the present application;

[0011] FIG3 is a perspective schematic diagram of a liquid cooling assembly and a cylindrical battery provided by the present application;

[0012] FIG4 is a perspective schematic diagram of a first pair of pipes provided in this application;

[0013] FIG5 is a perspective schematic diagram of a first connecting pipe and a liquid inlet main pipe provided by the present application;

[0014] FIG6 is a perspective schematic diagram of a liquid cooling plate provided in the present application;

[0015] FIG7 is a perspective schematic diagram of the liquid inlet main provided by the present application;

[0016] FIG8 is a third perspective schematic diagram of the liquid cooling assembly provided by the present application;

[0017] FIG9 is a fourth perspective schematic diagram of the liquid cooling assembly provided by the present application;

[0018] FIG10 is a perspective schematic diagram of the liquid return main provided by the present application;

[0019] FIG11 is a perspective schematic diagram of the second butt joint and the liquid return main pipe provided by the present application;

[0020] FIG12 is a three-dimensional schematic diagram of the liquid return main provided in this application.

[0021] Description of reference numerals:

[0022] 10-liquid cooling plate, 101-liquid inlet, 102-liquid return port, 11-second joint, 12-fourth joint, 20-liquid inlet main pipe, 201-first docking port, 202-total water inlet, 21-first main pipe, 211-first joint, 22-first quick-plug connector, 30-first docking pipe, 31-first straight pipe section, 32-first corrugated section, 33-second straight pipe section, 40-liquid return main pipe, 401-second docking port, 402-total water return port, 41-second main pipe, 411-third joint, 42-second quick-plug connector, 50-second docking pipe, 51-third straight pipe section, 52-second corrugated section, 53-fourth straight pipe section. Modes for Carrying Out the Invention

[0023] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] In the description of this embodiment, the terms "first" and "second" are used for distinction in the description and have no special meanings.

[0025] An embodiment of the present application provides a liquid cooling plate assembly. FIG1 is a first perspective schematic diagram of the liquid cooling assembly provided by the embodiment of the present application, and FIG2 is a second perspective schematic diagram of the liquid cooling assembly provided by the embodiment of the present application. Referring to FIG1 and FIG2 , the liquid cooling assembly includes: a plurality of liquid cooling plates 10 and a liquid inlet main pipe 20. The plurality of liquid cooling plates 10 are arranged in sequence, with an installation space for installing a heating element formed between adjacent liquid cooling plates 10. Each liquid cooling plate 10 has a circulation channel (not shown in the figure) and a liquid inlet 101 connected to the circulation channel. The liquid inlet main pipe 20 has a plurality of first docking ports 201, and the plurality of first docking ports 201 correspond one-to-one to the plurality of liquid inlets 101. A first docking pipe 30 is connected between the first docking port 201 and the liquid inlet 101, and the first docking pipe 30 is at least partially flexible.

[0026] In some embodiments of the present application, FIG3 is a three-dimensional schematic diagram of a liquid cooling assembly and a cylindrical battery provided in an embodiment of the present application. Please refer to FIG1 to 3. The heating element may be a cylindrical battery, and the shape of the liquid cooling plate 10 may be a serpentine shape. This design can increase the contact area between the liquid cooling plate 10 and the cylindrical battery, thereby improving the cooling efficiency. The number of liquid cooling plates 10 may be 2, 3 or more. The liquid cooling plate 10 and the liquid cooling plate circulation channel are integrally formed, for example, by casting or 3D printing.

[0027] It is understandable that the heating element may also be a battery in an approximately rectangular shape, and the liquid cooling plate 10 may also be in a flat plate shape, so that the heating element is in full contact with the liquid cooling plate 10 .

[0028] In some embodiments of the present application, the liquid inlet 101 may refer to an opening formed on the surface of the liquid cooling plate 10. In some embodiments of the present application, as shown in FIG2 , a second connector 11 may be provided protruding from the surface of the liquid cooling plate 10. The through hole of the connector defines the liquid inlet 101, so as to facilitate connection to the first docking pipe 30 via the second connector 11.

[0029] In some embodiments of the present application, referring to Figures 1 and 2 , the number of first docking ports 201 may be two, three, or more. In some embodiments of the present application, the first docking port 201 may refer to an opening formed on the surface of the liquid inlet main pipe 20. In some embodiments of the present application, as shown in Figure 2 , a connector may be provided protruding from the surface of the liquid inlet main pipe 20 , with a through hole of the connector defining the first docking port 201 to facilitate connection to the first docking pipe 30 via the connector.

[0030] In some embodiments of the present application, the liquid inlet main pipe 20 can be composed of a whole pipe. In other embodiments of the present application, the liquid inlet main pipe 20 can be composed of multiple pipes connected in series, so that it is easy to replace a pipe when it is damaged.

[0031] A first connecting pipe 30 is connected between the first connecting port 201 of the liquid inlet main pipe 20 and the liquid inlet port 101 of the liquid cooling plate 10. The first connecting pipe 30 is at least partially flexible. Because the first connecting pipe 30 is at least partially flexible, i.e., has elasticity and stretchability, it can absorb tolerances between the liquid inlet main pipe 20 and the liquid cooling plate 10 during the connection process. This simplifies assembly of the liquid inlet main pipe 20 and the liquid cooling plate 10, ensures the reliability of the connection between the liquid inlet main pipe 20 and the liquid cooling plate 10, and prevents leakage between the liquid inlet main pipe 20 and the liquid cooling plate 10, thereby preventing the reduction in cooling efficiency caused by leakage.

[0032] For example, the first connecting pipe 30 may be a flexible pipe such as a hose or a corrugated pipe.

[0033] In some embodiments of the present application, referring to Figures 1 and 3 , the liquid inlet 101 and the liquid return port 102 of the liquid cooling plate 10 are located at the same end, and the flow channel can be configured as a U-shape to achieve better temperature uniformity. Of course, Figures 1 and 3 are merely schematic illustrations of the liquid inlet 101 and the liquid return port 102. In other embodiments, the liquid return port 102 can be located at the end of the liquid cooling plate 10 facing away from the liquid inlet 101, and the flow channel can be configured as a straight line or a curved line.

[0034] In some embodiments of the present application, Figure 4 is a perspective schematic diagram of a first butt joint pipe 30 provided in an embodiment of the present application, Figure 5 is a perspective schematic diagram of the first butt joint pipe 30 and the liquid inlet main pipe 20 provided in an embodiment of the present application, and Figure 6 is a perspective schematic diagram of a liquid cooling plate 10 provided in an embodiment of the present application. Referring to Figures 4 to 6 , the first butt joint pipe 30 comprises a first straight pipe section 31, a first corrugated section 32, and a second straight pipe section 33. The first corrugated section 32 is located between the first straight pipe section 31 and the second straight pipe section 33. The first straight pipe section 31 is connected to the first butt joint port 201, and the second straight pipe section 33 is connected to the liquid inlet port 101. The first corrugated section 32 is flexible.

[0035] Specifically, the first corrugated section 32 is a bellows. Due to its elasticity and flexibility, the bellows can absorb tolerances between the liquid inlet main pipe 20 and the liquid cooling plate 10 during the connection process, thereby simplifying the assembly of the liquid inlet main pipe 20 and the liquid cooling plate 10. Furthermore, both the first straight pipe section 31 and the second straight pipe section 33 are straight pipes. The aperture of the first straight pipe section 31 matches the aperture of the first docking port 201, while the aperture of the second straight pipe section 33 matches the aperture of the liquid inlet 101. This ensures a tight connection between the first straight pipe section 31 and the first docking port 201, and a tight connection between the second straight pipe section 33 and the liquid inlet 101, preventing coolant leakage and improving cooling efficiency.

[0036] In some embodiments of the present application, as shown in Figures 4 to 6 , the liquid inlet main pipe 20 has multiple first joints 211, each of which defines a first docking port 201. The liquid cold plate 10 has a second joint 11 defining the liquid inlet port 101. The first straight pipe section 31 is nested with the first joint 211, while the second straight pipe section 33 is nested with the second joint 11. The first joints 211 and the second joints 11 enhance the strength of the first docking pipe 30. In one example, the first straight pipe section 31 can be nested with the first joint 211, while the second straight pipe section 33 can be nested with the second joint 11. In another example, the first joint 211 can be nested with the first straight pipe section 31, while the second joint 11 can be nested with the second straight pipe section 33. Specifically, both the first joint 211 and the second joint 11 are bamboo joints. The first joint 211 enhances the strength of the first straight pipe section 31, while the second joint 11 enhances the strength of the second straight pipe section 33.

[0037] In some embodiments of the present application, the first straight pipe section 31 is expanded and connected to the first joint 211, and the second straight pipe section 33 is expanded and connected to the second joint 11, thereby preventing the first straight pipe section 31 and the second straight pipe section 33 from falling off. In one example, the pipe end of the first straight pipe section 31 is inserted into the pipe hole of the first joint 211, and the pipe end of the first straight pipe section 31 is expanded using a tube expander. The plastic deformation of the first straight pipe section 31 and the elastic deformation of the pipe hole of the first joint 211 are utilized to tightly connect the first straight pipe section 31 and the first joint 211. In another example, the pipe end of the first joint 211 is inserted into the pipe hole of the first straight pipe section 31, and the pipe end of the first joint 211 is expanded using a tube expander. The plastic deformation of the first joint 211 and the elastic deformation of the pipe hole of the first straight pipe section 31 are utilized to tightly connect the first straight pipe section 31 and the first joint 211. In one example, the end of the second straight pipe section 33 is inserted into the tube hole of the second joint 11, and the end of the second straight pipe section 33 is expanded using a tube expander. The plastic deformation of the second straight pipe section 33 and the elastic deformation of the tube hole of the second joint 11 are utilized to tightly connect the second straight pipe section 33 and the second joint 11. In another example, the end of the second joint 11 is inserted into the tube hole of the second straight pipe section 33, and the end of the second joint 11 is expanded using a tube expander. The plastic deformation of the second joint 11 and the elastic deformation of the tube hole of the second straight pipe section 33 are utilized to tightly connect the second straight pipe section 33 and the second joint 11.

[0038] It is understandable that the first joint 211 and the second joint 11 may also be connected to the first butting pipe 30 in other ways, such as welding or threaded connection.

[0039] In some embodiments of the present application, Figure 7 is a three-dimensional schematic diagram of the liquid inlet main pipe 20 provided in the embodiment of the present application. Please refer to Figure 7. The liquid inlet main pipe 20 includes a plurality of first main pipes 21 that are separately arranged, and the plurality of first main pipes 21 are connected in sequence; at least some of the first main pipes 21 have a first docking port 201. A plurality of first joints 211 are provided on the first main pipe 21, and the first joints 211 are integrally formed with the first main pipe 21. The number of first main pipes 21 can be 1, 2, 3 or more than 3. Each first main pipe 21 can be provided with 1, 2, 3 or more than 3 first joints 211. The first joint 211 is integrally formed with the first main pipe 21, for example, by casting or 3D printing and other processing methods, which can reduce the cost of the liquid cooling component and improve the structural strength of the liquid inlet main pipe 20.

[0040] In some embodiments of the present application, referring to FIG7 , first quick-connect connectors 22 are provided between adjacent first main pipes 21. These first quick-connect connectors 22 connect adjacent first main pipes 21. Because the first quick-connect connectors 22 can be quickly connected and disconnected, the number of first main pipes 21 can be flexibly adjusted based on actual needs, thereby reducing waste and improving utilization efficiency. The first quick-connect connectors 22 can be made of plastic, such as PA66 GF30, and can utilize pre-made pipe connection structures, such as pipe clamps and quick connectors.

[0041] In some embodiments of the present application, referring to FIG. 6 and FIG. 7 , the liquid inlet main pipe 20 has a main water inlet 202 ; the inner diameters of the plurality of first joints 211 gradually increase in a direction away from the main water inlet 202 , so that the flow rate flowing into the liquid cooling plate 10 from each first joint 211 is equal.

[0042] In some embodiments of the present application, Figure 8 is a third perspective schematic diagram of a liquid cooling assembly provided in an embodiment of the present application; Figure 9 is a fourth perspective schematic diagram of a liquid cooling assembly provided in an embodiment of the present application. Referring to Figures 8 and 9, the liquid cooling assembly further includes a liquid return main pipe 40, with each liquid cooling plate 10 communicating with the liquid return port 102 of the circulation channel. The liquid return main pipe 40 has a plurality of second docking ports 401, each of which corresponds one-to-one with the plurality of liquid return ports 102. A second docking pipe 50 is connected between the second docking ports 401 and the liquid return port 102, and the second docking pipe 50 is at least partially flexible.

[0043] In some embodiments of the present application, the number of second docking ports 401 may be two, three, or more. In some embodiments of the present application, the second docking port 401 may refer to an opening formed on the surface of the liquid return main pipe 40. In some embodiments of the present application, as shown in FIG9 , a connector may be provided protruding from the surface of the liquid return main pipe 40 , with the through hole of the connector defining the second docking port 401 to facilitate connection to the second docking pipe 50 via the connector.

[0044] In some embodiments of the present application, the liquid return main pipe 40 can be composed of a whole pipe. In some other embodiments of the present application, the liquid return main pipe 40 can be composed of multiple pipes connected in series, so that it is easy to replace a pipe when it is damaged.

[0045] A second connecting pipe 50 is connected between the second connecting port 401 of the liquid return main pipe 40 and the liquid return port 102 of the liquid cooling plate 10. The second connecting pipe 50 is at least partially flexible. Because the second connecting pipe 50 is at least partially flexible, i.e., has elasticity and stretchability, it can absorb tolerances between the liquid return main pipe 40 and the liquid cooling plate 10 during the connection process. This simplifies assembly of the liquid return main pipe 40 and the liquid cooling plate 10, ensures the reliability of the connection between the liquid return main pipe 40 and the liquid cooling plate 10, and prevents leakage between the liquid return main pipe 40 and the liquid cooling plate 10, thereby preventing the reduction in cooling efficiency caused by leakage.

[0046] For example, the second connecting pipe 50 may be a flexible and bendable pipe such as a hose or a corrugated pipe.

[0047] In some embodiments of the present application, FIG10 is a perspective schematic diagram of the liquid return main pipe 40 provided in an embodiment of the present application; FIG11 is a perspective schematic diagram of the second docking pipe 50 and the liquid return main pipe 40 provided in an embodiment of the present application. Referring to FIG9 to 11 , the second docking pipe 50 comprises a third straight pipe section 51, a second corrugated section 52, and a fourth straight pipe section 53. The second corrugated section 52 is located between the third straight pipe section 51 and the fourth straight pipe section 53. The third straight pipe section 51 is connected to the second docking port 401, and the fourth straight pipe section 53 is connected to the liquid return port 102. The second corrugated section 52 is flexible. Specifically, the second corrugated section 52 is a bellows. Due to its elasticity and flexibility, the bellows can absorb the tolerances between the liquid return main pipe 40 and the liquid cooling plate 10 during the connection process, thereby simplifying the assembly of the liquid return main pipe 40 and the liquid cooling plate 10. At the same time, the third straight pipe section 51 and the fourth straight pipe section 53 are both straight pipes, the aperture of the third straight pipe section 51 matches the aperture of the second docking port 401, and the aperture of the fourth straight pipe section 53 matches the aperture of the return liquid port 102, so that the third straight pipe section 51 is tightly connected to the second docking port 401, and the fourth straight pipe section 53 is tightly connected to the return liquid port 102, ensuring that the coolant does not leak, thereby improving the cooling efficiency.

[0048] In some embodiments of the present application, as shown in Figures 9 to 11 , the liquid return main pipe 40 has multiple third joints 411, which define a second docking port 401. The liquid cold plate 10 has a fourth joint 12, which defines a liquid return port 102. The third straight pipe section 51 is nested with the third joints 411, and the fourth straight pipe section 53 is nested with the fourth joint 12. The third joints 411 and the fourth joint 12 enhance the strength of the second docking pipe 50. In one example, the third straight pipe section 51 can be nested with the third joints 411, and the fourth straight pipe section 53 can be nested with the fourth joint 12. In another example, the third joint 411 can be nested with the third straight pipe section 51, and the fourth joint 12 can be nested with the fourth straight pipe section 53. Specifically, both the third joints 411 and the fourth joint 12 are bamboo joints. The third joint 411 enhances the strength of the third straight pipe section 51, and the fourth joint 12 enhances the strength of the fourth straight pipe section 53.

[0049] In some embodiments of the present application, referring to Figures 9 to 11, the third straight pipe section 51 is expanded and connected to the third joint 411, and the fourth straight pipe section 53 is expanded and connected to the fourth joint 12, thereby preventing the third straight pipe section 51 and the fourth straight pipe section 53 from falling off. In one example, the pipe end of the third straight pipe section 51 is inserted into the pipe hole of the third joint 411, and the pipe end of the third straight pipe section 51 is expanded using a pipe expander. The third straight pipe section 51 and the third joint 411 are tightly connected by utilizing the plastic deformation of the third straight pipe section 51 and the elastic deformation of the pipe hole of the third joint 411. In another example, the pipe end of the third joint 411 is inserted into the pipe hole of the third straight pipe section 51, and the pipe end of the third joint 411 is expanded using a pipe expander. The third straight pipe section 51 and the third joint 411 are tightly connected by utilizing the plastic deformation of the third joint 411 and the elastic deformation of the pipe hole of the third straight pipe section 51. In one example, the end of the fourth straight pipe section 53 is inserted into the tube hole of the fourth joint 12, and the tube expander is used to expand the tube end of the fourth straight pipe section 53. The plastic deformation of the fourth straight pipe section 53 and the elastic deformation of the tube hole of the fourth joint 12 are utilized to tightly connect the fourth straight pipe section 53 and the fourth joint 12. In another example, the end of the fourth joint 12 is inserted into the tube hole of the fourth straight pipe section 53, and the tube expander is used to expand the tube end of the fourth joint 12. The plastic deformation of the fourth joint 12 and the elastic deformation of the tube hole of the fourth straight pipe section 53 are utilized to tightly connect the fourth straight pipe section 53 and the fourth joint 12.

[0050] It is understandable that the third joint 411 and the fourth joint 12 may also be connected to the second butting pipe 50 in other ways, such as welding or threaded connection.

[0051] In some embodiments of the present application, Figure 12 is a three-dimensional schematic diagram of the liquid return main pipe provided in the embodiment of the present application. Please refer to Figure 12. The liquid return main pipe 40 includes multiple second main pipes 41, and the multiple second main pipes 41 are connected in sequence; the split second main pipe 41 has a second docking port 401. A plurality of third joints 411 are provided on the second main pipe 41, and the third joints 411 are integrally formed with the second main pipe 41. The number of second main pipes 41 can be 1, 2, 3 or more than 3. Each second main pipe 41 can be provided with 1, 2, 3 or more than 3 third joints 411. The third joint 411 is integrally formed with the second main pipe 41, for example, by casting or 3D printing and other processing methods, which can reduce the cost of the liquid cooling component and improve the structural strength of the liquid return main pipe 40.

[0052] In some embodiments of the present application, referring to FIG. 12 , second quick-connectors 42 are provided between adjacent second main pipes 41 . These second quick-connectors 42 connect the adjacent second main pipes 41 and allow for quick connection and disconnection. Therefore, the number of second main pipes 41 can be flexibly adjusted based on actual needs, thereby reducing waste and improving utilization efficiency. The second quick-connectors 42 can be made of plastic, such as PA66 GF30, and can utilize pre-made pipe connection structures, such as pipe clamps or quick connectors.

[0053] In some embodiments of the present application, the liquid return main 40 has a total return port 402; the inner diameters of the plurality of third joints 411 gradually increase in a direction away from the total return port 402, so that the flow rate out of the liquid cooling plate 10 from each third joint 411 can be equal.

[0054] In some embodiments of the present application, referring to Figures 2 and 3 , the liquid inlet 101 and the liquid return port 102 are located at the same end of the liquid cooling plate 10 , and the liquid inlet main pipe 20 and the liquid return main pipe 40 are located at the same end of the liquid cooling plate 10 , thereby saving space and cost. Here, the liquid return port 102 can be located on the upper side of the liquid cooling plate 10 , and the liquid inlet 101 can be located on the lower side of the liquid cooling plate 10 ; alternatively, the liquid return port 102 can be located on the lower side of the liquid cooling plate 10 , and the liquid inlet 101 can be located on the upper side of the liquid cooling plate 10 .

[0055] Furthermore, in order to better implement the liquid cooling assembly in the embodiment of the present application, based on the liquid cooling assembly, the present application also provides a battery pack, which includes the liquid cooling assembly of the above embodiment. In the battery pack of the present application, the liquid inlet pipe is connected to the liquid cooling plate through a first butt joint. Since the first butt joint is at least partially flexible, it can absorb the tolerance of the liquid inlet pipe and the liquid cooling plate during the connection process, making the assembly of the liquid inlet pipe and the liquid cooling plate simple, and ensuring the reliability of the connection between the liquid inlet pipe and the liquid cooling plate, avoiding leakage between the liquid inlet pipe and the liquid cooling plate, and then avoiding the phenomenon of reduced cooling efficiency due to leakage.

Claims

1. A liquid cooling assembly, comprising: A plurality of liquid cooling plates (10), the plurality of liquid cooling plates (10) being arranged in sequence at intervals, and an installation space for installing a heating element is formed between adjacent liquid cooling plates (10), and each of the liquid cooling plates (10) has a circulation channel and a liquid inlet (101) connected to the circulation channel; A liquid inlet main pipe (20), the liquid inlet main pipe (20) having a plurality of first pairing ports (201), the plurality of first pairing ports (201) corresponding one-to-one to the plurality of liquid inlets (101); A first butt joint pipe (30) is connected between the first butt joint (201) and the liquid inlet (101), and the first butt joint pipe (30) is at least partially flexible.

2. The liquid cooling assembly according to claim 1, wherein: The first butt-jointed pipe (30) comprises a first straight pipe section (31), a first corrugated section (32) and a second straight pipe section (33); The first corrugated section (32) is located between the first straight pipe section (31) and the second straight pipe section (33); the first straight pipe section (31) is connected to the first docking port (201); the second straight pipe section (33) is connected to the liquid inlet (101); and the first corrugated section (32) is flexible.

3. The liquid cooling assembly according to claim 2, wherein: The liquid inlet main pipe (20) has a plurality of first joints (211), and the first joints (211) define the first docking port (201); The liquid cooling plate (10) has a second joint (11) defining the liquid inlet (101), the first straight pipe section (31) is sleeved with the first joint (211), and the second straight pipe section (33) is sleeved with the second joint (11).

4. The liquid cooling assembly of claim 3, wherein: The first straight pipe section (31) is expanded and connected to the first joint (211), and the second straight pipe section (33) is expanded and connected to the second joint (11).

5. The liquid cooling assembly of claim 1, wherein: The liquid inlet main pipe (20) comprises a plurality of first main pipes (21) which are separately arranged, and the plurality of first main pipes (21) are connected in sequence; At least part of the first main pipe (21) has the first docking port (201).

6. The liquid cooling assembly of claim 5, wherein: A first quick-plug connector (22) is provided between the adjacent first main pipes (21), and the first quick-plug connector (22) is connected to the adjacent first main pipes (21).

7. The liquid cooling assembly of claim 3, wherein: The liquid inlet main pipe (20) has a main water inlet (202); In a direction away from the main water inlet (202), the inner diameters of the plurality of first joints (211) gradually increase.

8. The liquid cooling assembly according to claim 1, further comprising a liquid return main pipe (40), each of the liquid cooling plates (10) being in communication with a liquid return port (102) of the circulation channel; The liquid return main pipe (40) has a plurality of second docking ports (401), the plurality of second docking ports (401) corresponding one-to-one to the plurality of liquid return ports (102), a second docking pipe (50) being connected between the second docking ports (401) and the liquid return ports (102), and the second docking pipe (50) is at least partially flexible.

9. The liquid cooling assembly of claim 8, wherein: The liquid inlet (101) and the liquid return port (102) are arranged at the same end of the liquid cooling plate (10), and the liquid inlet main pipe (20) and the liquid return main pipe (40) are located at the same end of the liquid cooling plate (10).

10. A battery pack comprising the liquid cooling assembly according to any one of claims 1 to 9.

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