Liquid cooling assembly, battery pack and new energy automobile

Abstract

The embodiment of the invention provides a liquid cooling assembly, a battery pack and a new energy automobile, and relates to the technical field of power batteries. The liquid cooling assembly comprises a middle beam and a liquid cooling structure, the bottom of the middle beam is provided with a mounting channel arranged in a penetrating mode, the liquid cooling structure penetrates through the mounting channel, and the liquid cooling structure is welded to the middle beam. When the battery pack is assembled, the middle beam can be directly hoisted, so that the middle beam and the liquid cooling structure are integrally mounted in the battery shell, the assembly steps are simplified, and the assembly efficiency is improved; moreover, the middle beam and the liquid cooling structure are integrated, so that mechanical interference between the liquid cooling structure and the middle beam is avoided, and the stability and the reliability of the whole structure are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a liquid cooling assembly, a battery pack and a new energy vehicle. Background Art

[0002] In the power battery industry, battery modules are typically separated by installing an intermediate beam in the battery housing. The current assembly process typically involves installing the liquid cooling flat tubes first, then hoisting the intermediate beam. This means that after the liquid cooling flat tubes are secured to the battery housing, the intermediate beam is positioned and installed, ensuring a clear distance between the intermediate beam and the liquid cooling flat tubes.

[0003] However, this assembly method requires independent positioning and adjustment of the liquid-cooling flat tubes and the middle beam, resulting in a cumbersome and inefficient assembly process. Moreover, during the hoisting and position adjustment process of the middle beam, mechanical interference with the liquid-cooling flat tubes is likely to occur, thereby causing structural damage to the liquid-cooling flat tubes and affecting the overall performance and reliability of the battery pack. Summary of the Invention

[0004] The purpose of the present invention is to provide a liquid cooling assembly, a battery pack and a new energy vehicle, which can improve assembly efficiency and avoid mechanical interference between the liquid cooling structure and the middle beam, thereby improving the stability and reliability of the overall structure.

[0005] The embodiment of the present invention is achieved as follows:

[0006] In a first aspect, the present invention provides a liquid cooling assembly, comprising:

[0007] A middle beam, wherein the bottom of the middle beam has a mounting channel extending therethrough; and

[0008] A liquid cooling structure is provided in the installation channel and is welded to the middle beam.

[0009] In an optional embodiment, the installation channel includes a first installation channel and a second installation channel, and the first installation channel and the second installation channel are spaced apart along the first direction;

[0010] The liquid cooling structure includes a first liquid cooling flat tube, a second liquid cooling flat tube, a first manifold, and a second manifold. The first liquid cooling flat tube and the second liquid cooling flat tube are spaced apart along the first direction and respectively pass through the first mounting channel and the second mounting channel along the second direction. The first liquid cooling flat tube and the second liquid cooling flat tube are both welded to the middle beam.

[0011] The first manifold is connected to one end of the first liquid-cooling flat tube and one end of the second liquid-cooling flat tube at the same time, and the second manifold is connected to the other end of the first liquid-cooling flat tube and the other end of the second liquid-cooling flat tube at the same time;

[0012] The first direction and the second direction form an angle.

[0013] In an optional embodiment, the interior of the middle beam further comprises a liquid inlet cavity and a liquid outlet cavity independently arranged from each other; the first installation channel comprises a first sub-channel and a second sub-channel spaced apart along the second direction, and the second installation channel comprises a third sub-channel and a fourth sub-channel spaced apart along the second direction; the first sub-channel and the third sub-channel are located on one side of the middle beam, and the first sub-channel is in communication with the liquid inlet cavity; the second sub-channel and the fourth sub-channel are located on the other side of the middle beam, and the fourth sub-channel is in communication with the liquid outlet cavity;

[0014] The first liquid-cooling flat tube includes a first sub-flat tube and a second sub-flat tube spaced apart along the second direction, one end of the first sub-flat tube being disposed in the first sub-channel and communicating with the liquid inlet cavity, and one end of the second sub-flat tube being passed through the second sub-channel, disposed in the first sub-channel, and communicating with the liquid inlet cavity; the second liquid-cooling flat tube includes a third sub-flat tube and a fourth sub-flat tube spaced apart along the second direction, one end of the third sub-flat tube being passed through the third sub-channel, located in the fourth sub-channel, and communicating with the liquid outlet cavity, and one end of the fourth sub-flat tube being disposed in the fourth sub-channel, and communicating with the liquid outlet cavity;

[0015] The first manifold is communicated with the other end of the first sub-flat tube and the other end of the third sub-flat tube at the same time, and the second manifold is communicated with the other end of the second sub-flat tube and the other end of the fourth sub-flat tube at the same time.

[0016] In an optional embodiment, the liquid cooling assembly further includes a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe is arranged on the middle beam and communicates with the liquid inlet cavity; the liquid outlet pipe is arranged on the middle beam and communicates with the liquid outlet cavity.

[0017] In an optional embodiment, the intermediate beam includes a beam body, a first connecting portion, a second connecting portion, a first mounting portion, and a second mounting portion, the beam body, the first connecting portion, and the first mounting portion are sequentially connected along a third direction, the beam body, the second connecting portion, and the second mounting portion are sequentially connected along the third direction, and the first connecting portion and the second connecting portion are spaced apart along the second direction, and the first mounting portion and the second mounting portion are spaced apart along the second direction;

[0018] The liquid inlet cavity includes a first liquid inlet cavity and a second liquid inlet cavity that are connected to each other. The first connecting portion has the first liquid inlet cavity. The liquid inlet pipe is provided on the first connecting portion and is connected to the first liquid inlet cavity. The first mounting portion has the second liquid inlet cavity, the first sub-channel, and the third sub-channel. The first sub-channel is connected to the second liquid inlet cavity. One end of the first sub-flat tube and one end of the second sub-flat tube are both connected to the second liquid inlet cavity.

[0019] The liquid outlet cavity includes a first liquid outlet cavity and a second liquid outlet cavity that are connected to each other. The second connecting portion has the first liquid outlet cavity. The liquid outlet pipe is provided on the second connecting portion and is connected to the first liquid outlet cavity. The second mounting portion has the second liquid outlet cavity, the second sub-channel, and the fourth sub-channel. The fourth sub-channel is connected to the second liquid outlet cavity. One end of the second sub-flat tube and one end of the fourth sub-flat tube are both connected to the second liquid outlet cavity.

[0020] The first direction, the second direction and the third direction are perpendicular to each other.

[0021] In an optional embodiment, the middle beam further includes a first reinforcement portion, two ends of which are respectively connected to the first connecting portion and the second connecting portion; and / or,

[0022] The middle beam further includes a second reinforcement portion, and two ends of the second reinforcement portion are respectively connected to the first mounting portion and the second mounting portion.

[0023] In an optional embodiment, the liquid inlet cavity is communicated with both the first sub-channel and the third sub-channel, and one end of the third sub-flat tube is passed through the third sub-channel and welded to the middle beam to close the third sub-channel.

[0024] The liquid outlet cavity is communicated with the second sub-channel and the fourth sub-channel at the same time. One end of the second sub-flat tube is passed through the second sub-channel and welded to the middle beam to close the second sub-channel.

[0025] In an optional embodiment, the middle beam extends along a first direction, the number of the mounting channels and the number of the liquid cooling structures are both multiple, and the multiple mounting channels are spaced apart along the first direction; the multiple liquid cooling structures are spaced apart along the first direction and correspond one-to-one to the multiple mounting channels, and each of the liquid cooling structures is passed through the mounting channel along the second direction;

[0026] The first direction and the second direction form an angle.

[0027] In an optional embodiment, a plurality of avoidance gaps are further provided at the bottom of the middle beam, and one avoidance gap is provided between each of two adjacent liquid cooling structures.

[0028] In an optional embodiment, the liquid cooling assembly further includes a plurality of brackets, wherein the plurality of brackets are respectively arranged at the plurality of avoidance gaps and are all connected to the middle beam; and / or,

[0029] The top of the middle beam is further provided with a plurality of mounting through holes, and the plurality of mounting through holes correspond to and are connected with the plurality of avoidance notches one by one.

[0030] In a second aspect, the present invention provides a battery pack comprising a battery shell and the liquid cooling assembly described in any one of the aforementioned embodiments, wherein the liquid cooling structure and the middle beam are both arranged in the battery shell, and the middle beam is connected to the bottom wall of the battery shell.

[0031] In a third aspect, the present invention provides a new energy vehicle comprising the battery pack described in the aforementioned embodiment.

[0032] The beneficial effects of the embodiments of the present invention include:

[0033] The liquid cooling assembly includes an intermediate beam and a liquid cooling structure. The bottom of the intermediate beam has an installation channel extending therethrough. The liquid cooling structure is inserted into the installation channel and welded to the intermediate beam. By inserting the liquid cooling structure through the installation channel of the intermediate beam and then welding and fixing the liquid cooling structure to the intermediate beam, the liquid cooling structure can be integrated with the intermediate beam into an integrated structure, so that the liquid cooling assembly has both liquid cooling functions and the function of separating battery modules. When assembling the battery pack, the intermediate beam can be directly hoisted so that the intermediate beam and the liquid cooling structure are installed as a whole in the battery shell, thereby simplifying the assembly steps and improving assembly efficiency. In addition, this integrated design has good overall structural stability, avoids mechanical interference between the liquid cooling structure and the intermediate beam, and thus improves the reliability of the battery pack.

[0034] The battery pack includes a liquid cooling assembly with all the benefits of the liquid cooling assembly.

[0035] The new energy vehicle includes a battery pack, which has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the present invention;

[0038] Figure 2 A schematic structural diagram of a battery pack provided in an embodiment of the present invention;

[0039] Figure 3 A schematic diagram of a portion of the structure of a battery pack provided in an embodiment of the present invention;

[0040] Figure 4 A schematic structural diagram of a liquid cooling assembly provided in an embodiment of the present invention;

[0041] Figure 5 A schematic diagram of a portion of the structure of a liquid cooling assembly provided in an embodiment of the present invention;

[0042] Figure 6 A schematic structural diagram of a middle beam from a first perspective provided by an embodiment of the present invention;

[0043] Figure 7 A schematic structural diagram of a middle beam from a second perspective provided by an embodiment of the present invention;

[0044] Figure 8 A cross-sectional view of a middle beam from a first perspective provided by an embodiment of the present invention;

[0045] Figure 9 A cross-sectional view from a second perspective of the intermediate beam provided by an embodiment of the present invention.

[0046] Icons: 1000-new energy vehicle; 1100-battery pack; 100-liquid cooling assembly; 10-middle beam; 11-installation channel; 1111-first installation channel; 1111-first sub-channel; 1112-second sub-channel; 112-second installation channel; 1121-third sub-channel; 1122-fourth sub-channel; 12-liquid inlet cavity; 121-first liquid inlet cavity; 122-second liquid inlet cavity; 13-liquid outlet cavity; 131-first liquid outlet cavity; 132-second liquid outlet cavity; 14-beam body; 15-first connecting part; 151-first liquid inlet hole; 152-second liquid inlet hole; 16-second connecting part; 161-first liquid outlet hole; 162-second liquid outlet Hole; 17-first mounting portion; 18-second mounting portion; 21-first reinforcement portion; 22-second reinforcement portion; 23-avoidance gap; 24-mounting through hole; 30-liquid cooling structure; 31-first liquid-cooling flat tube; 311-first sub-flat tube; 312-second sub-flat tube; 32-second liquid-cooling flat tube; 321-third sub-flat tube; 322-fourth sub-flat tube; 33-first manifold; 34-second manifold; 40-liquid inlet pipe; 50-liquid outlet pipe; 60-bracket; 200-battery shell; 201-J-beam; 202-side beam; 300-first battery pack; 301-first battery cell; 400-second battery pack; 401-second battery cell; 1200-vehicle body. DETAILED DESCRIPTION

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0052] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0053] As described in the background, the current assembly process typically involves installing the liquid-cooling flat tubes first and then hoisting the intermediate beam. This means that after the liquid-cooling flat tubes are secured to the battery housing, the intermediate beam is positioned and installed, ensuring a clear distance between the intermediate beam and the liquid-cooling flat tubes. However, this assembly method requires independent positioning and adjustment of the liquid-cooling flat tubes and the intermediate beam, resulting in a cumbersome and inefficient assembly process. Furthermore, during the hoisting and position adjustment of the intermediate beam, mechanical interference with the liquid-cooling flat tubes can occur, potentially causing structural damage to the tubes and impacting the overall performance and reliability of the battery pack.

[0054] Based on this, please refer to Figures 1-9 The embodiments of the present invention provide a liquid cooling assembly 100, a battery pack 1100 and a new energy vehicle 1000, which can effectively improve the technical problems mentioned above, that is, they can improve assembly efficiency and avoid mechanical interference between the liquid cooling structure 30 and the middle beam 10, thereby improving the stability and reliability of the overall structure.

[0055] It should be noted that the first direction mentioned in the following content is Figures 1-9 The X direction is shown in the second direction. Figures 1-9The Y direction is shown in the figure, and the third direction is Figures 1-9 The liquid cooling assembly 100, the battery pack 1100 and the new energy vehicle 1000 will be described in detail below.

[0056] Please refer to Figure 1 , Figure 1 The structural diagram of the new energy vehicle 1000 provided in this embodiment is combined with Figure 1 The new energy vehicle 1000 includes a battery pack 1100 and a vehicle body 1200 . The battery pack 1100 is disposed on the vehicle body 1200 to provide electrical energy to the vehicle body 1200 to realize various functions of the vehicle body 1200 .

[0057] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic structural diagram of the battery pack 1100 provided in this embodiment. Figure 3 A partial structural diagram of the battery pack 1100 provided in this embodiment. Figure 2 and Figure 3 The battery pack 1100 includes a battery shell 200, a liquid cooling assembly 100, a first battery group 300 and a second battery group 400. The liquid cooling assembly 100, the first battery group 300 and the second battery group 400 are all arranged in the battery shell 200, and the liquid cooling assembly 100 is in contact with the first battery group 300 and the second battery group 400 at the same time, and can conduct heat to the first battery group 300 and the second battery group 400 to ensure their normal operation at an appropriate temperature.

[0058] Specifically, please refer to Figure 4 and Figure 5 , Figure 4 This is a schematic structural diagram of the liquid cooling assembly 100 provided in this embodiment. Figure 5 This is a partial structural diagram of the liquid cooling assembly 100 provided in this embodiment. Figure 4 and Figure 5 The liquid cooling assembly 100 includes a middle beam 10 and a liquid cooling structure 30. The middle beam 10 and the liquid cooling structure 30 are welded to form an integrated structure, which can make the overall structure stable.

[0059] For further information, please refer to Figure 6 , Figure 6 The first perspective structural diagram of the middle beam 10 provided in this embodiment is combined with Figure 4-Figure 6 The bottom of the middle beam 10 has a penetrating installation channel 11 , the liquid cooling structure 30 is passed through the installation channel 11 , and the liquid cooling structure 30 is welded to the middle beam 10 .

[0060] As will be readily understood, by inserting the liquid cooling structure 30 through the mounting channel 11 of the intermediate beam 10 for insertion and mating, and then welding the liquid cooling structure 30 to the intermediate beam 10, the liquid cooling structure 30 and the intermediate beam 10 are integrated into a single structure, thereby enabling the liquid cooling assembly 100 to function as both a liquid cooling system and a battery module separator. During assembly of the battery pack 1100, the intermediate beam 10 can be directly hoisted, allowing the intermediate beam 10 and the liquid cooling structure 30 to be integrally installed within the battery housing 200, thereby simplifying assembly steps and improving assembly efficiency. Furthermore, this integrated design provides excellent overall structural stability, preventing mechanical interference between the liquid cooling structure 30 and the intermediate beam 10, thereby enhancing the reliability of the battery pack 1100.

[0061] Please combine Figure 2-Figure 4 The provision of the intermediate beam 10 can separate the interior space of the battery housing 200 into a first assembly space and a second assembly space. As will be readily understood, the first battery pack 300 is disposed in the first assembly space, and the second battery pack 400 is disposed in the second assembly space, ensuring that the operations of the first and second battery packs 300, 400 do not interfere with each other. Furthermore, during actual assembly, the intermediate beam 10 can be connected to the bottom wall of the battery housing 200, thereby further improving the stability of the overall installation of the liquid cooling assembly 100 within the battery housing 200. This, in turn, improves the installation stability of the first and second battery packs 300, 400, and ensures the cooling effect of the liquid cooling structure 30 on the first and second battery packs 300, 400.

[0062] Please continue to combine Figure 4-Figure 6 To achieve simultaneous heat exchange for multiple battery packs, improving heat exchange efficiency and the energy density of the battery pack 1100, multiple mounting channels 11 and liquid cooling structures 30 are provided. Multiple mounting channels 11 are spaced apart along the first direction; multiple liquid cooling structures 30 are spaced apart along the first direction and correspond one-to-one with the multiple mounting channels 11. Each liquid cooling structure 30 penetrates the mounting channel 11 along the second direction, and the middle beam 10 extends in the first direction. The first and second directions form an angle.

[0063] Combine Figure 3 and Figure 4 In this embodiment, there are multiple first battery groups 300 and multiple second battery groups 400. The multiple first battery groups 300 correspond one-to-one to the multiple liquid-cooling structures 30, and the multiple second battery groups 400 also correspond one-to-one to the multiple liquid-cooling structures 30. The multiple first battery groups 300 are spaced apart along the first direction, and each first battery group 300 includes multiple first battery cells 301 arranged sequentially along the second direction. Similarly, the multiple second battery groups 400 are spaced apart along the first direction, and each second battery group 400 includes multiple second battery cells 401 arranged sequentially along the second direction.

[0064] It can be understood that the arrangement direction of the multiple first battery cells 301 and the multiple second battery cells 401 is the same as the extension direction of the liquid cooling structure 30, thereby ensuring that the liquid cooling structure 30 exchanges heat with the multiple first battery cells 301 and the multiple second battery cells 401 in turn, thereby improving the liquid cooling effect, and also facilitating the installation of the first battery group 300 and the second battery group 400, thereby improving assembly efficiency.

[0065] Combine Figure 2 and Figure 3 In order to better install the first battery pack 300 and the second battery pack 400 and improve their installation stability, in this embodiment, the bottom wall of the battery shell 200 is further provided with a plurality of "X" beams 201, and the plurality of "X" beams 201 are arranged at intervals along the first direction, and an "X" beam 201 is provided between two adjacent liquid cooling structures 30.

[0066] In other words, the bottom of the first battery pack 300 and the bottom of the second battery pack 400 not only contact the liquid cooling structure 30 but also abut the I-shaped beam 201. This means that the I-shaped beam 201 can provide support for the first and second battery packs 300 and 400. Furthermore, during actual assembly, the I-shaped beam 201 can also provide mounting points. After the first and second battery packs 300 and 400 are secured by the structural member, the structural member is further connected and secured to the I-shaped beam 201, thereby improving the overall structural stability of the battery pack.

[0067] In order to further enhance the supporting effect of the battery shell 200 on the first battery pack 300 and the second battery pack 400, in the present embodiment, a plurality of side beams 202 are further provided on the bottom wall of the battery shell 200. The side beams 202 and the "I" beams 201 are spaced apart along the first direction, and a liquid cooling structure 30 is provided between the side beams 202 and the "I" beams 201.

[0068] As is easy to understand, on the one hand, the side beams 202 and the cross-beam 201 can respectively support the bottoms of the first and second battery packs 300, 400 at opposite ends, ensuring force balance between the first and second battery packs 300, 400, thereby improving installation stability. On the other hand, this arrangement also allows the middle area of ​​the bottoms of the first and second battery packs 300, 400 to contact the liquid cooling structure 30, improving heat exchange, ensuring normal operation of the battery pack, and increasing the service life of the battery cells and the safety of the battery pack 1100.

[0069] Please combine Figure 3 and Figure 6To avoid the "J" beam 201, in this embodiment, the bottom of the middle beam 10 is further provided with multiple avoidance notches 23. Each avoidance notch 23 is provided between two adjacent liquid cooling structures 30. It should be noted that the provision of multiple avoidance notches 23 can also reduce the weight of the middle beam 10 to a certain extent, thereby making the battery pack 1100 lighter overall and reducing production costs.

[0070] On this basis, combined with Figure 3 、 Figure 5 and Figure 6 In order to facilitate the connection and fixation between the middle beam 10 and the battery shell 200 , the liquid cooling assembly 100 further includes a plurality of brackets 60 , which are respectively arranged in the plurality of avoidance gaps 23 and are all connected to the middle beam 10 .

[0071] It is easy to understand that, based on the provision of the avoidance notch 23, by directly installing the bracket 60 on the cross-shaped beam 201 and locating it at the avoidance notch 23, and then connecting the bracket 60 to the middle beam 10, the entire middle beam 10 can be fixedly connected to the battery housing 200, thereby improving the overall installation stability of the liquid cooling assembly 100. At the same time, the number of connection points between the middle beam 10 and the battery housing 200 can be reduced, thereby reducing the number of structural parts used, simplifying the assembly process, further reducing production costs, and improving assembly efficiency.

[0072] To further improve assembly efficiency and enhance installation stability, the top of the intermediate beam 10 is further provided with a plurality of mounting holes 24, which correspond one-to-one with and communicate with the plurality of escape notches 23. In other words, during actual installation, bolts, screws, pins, or other fasteners can be passed directly through the mounting holes 24 to connect to the brackets 60 at the escape notches 23, or directly to the bottom wall of the battery case 200, resulting in convenient assembly and excellent stability.

[0073] Please continue to combine Figure 4-Figure 6 The mounting channel 11 includes a first mounting channel 111 and a second mounting channel 112, which are spaced apart along the first direction. The liquid cooling structure 30 includes a first liquid cooling flat tube 31, a second liquid cooling flat tube 32, a first manifold 33, and a second manifold 34. The first and second liquid cooling flat tubes 31, 32 are spaced apart along the first direction and extend through the first and second mounting channels 111, 112, respectively, along the second direction. Both the first and second liquid cooling flat tubes 31, 32 are welded to the center beam 10. The first manifold 33 is in communication with both one end of the first and second liquid cooling flat tubes 31, 32. The second manifold 34 is in communication with both the other end of the first and second liquid cooling flat tubes 31, 32.

[0074] During the actual assembly of the liquid-cooling structure 30 and the center beam 10, the first and second liquid-cooling flat tubes 31, 32 are first passed through the first and second mounting channels 111, 112, respectively. The liquid-cooling flat tubes are then welded to the mounting channel 11 to form an integrated structure. It should be noted that the provision of these through-type first and second mounting channels 111, 112 facilitates the insertion of the liquid-cooling flat tubes, improves assembly efficiency with the center beam 10, and enhances structural strength after welding.

[0075] It should be noted that the first liquid-cooling flat tubes 31, the second liquid-cooling flat tubes 32, the first manifold 33, and the second manifold 34 can all accommodate coolant. In some embodiments, to achieve circulation of the coolant and ensure effective heat exchange, liquid inlet and outlet connectors can be provided on the first manifold 33 and the second manifold 34, respectively. However, this design results in a longer coolant flow path, resulting in poor heat exchange when the coolant passes through multiple first battery cells 301 or multiple second battery cells 401 in sequence.

[0076] Therefore, in order to shorten the coolant flow path and improve the heat exchange effect, please refer to Figure 7-Figure 9 , Figure 7 This is a schematic structural diagram of the middle beam 10 provided in this embodiment from a second perspective. Figure 8 This is a cross-sectional view of the middle beam 10 provided in this embodiment from a first perspective. Figure 9 This is a cross-sectional view of the middle beam 10 from a second perspective provided in this embodiment. Figure 5-Figure 9 In this embodiment, the interior of the middle beam 10 further has a liquid inlet cavity 12 and a liquid outlet cavity 13 that are independently arranged.

[0077] Specifically, the first installation channel 111 includes a first sub-channel 1111 and a second sub-channel 1112 arranged at intervals along the second direction, and the second installation channel 112 includes a third sub-channel 1121 and a fourth sub-channel 1122 arranged at intervals along the second direction; the first sub-channel 1111 and the third sub-channel 1121 are located on one side of the middle beam 10, and the first sub-channel 1111 is connected to the liquid inlet chamber 12, the second sub-channel 1112 and the fourth sub-channel 1122 are located on the other side of the middle beam 10, and the fourth sub-channel 1122 is connected to the liquid outlet chamber 13.

[0078] The first liquid-cooling flat tube 31 includes a first sub-flat tube 311 and a second sub-flat tube 312 spaced apart along the second direction. One end of the first sub-flat tube 311 is disposed in the first sub-channel 1111 and communicates with the liquid inlet cavity 12. One end of the second sub-flat tube 312 passes through the second sub-channel 1112, is disposed in the first sub-channel 1111, and communicates with the liquid inlet cavity 12. The second liquid-cooling flat tube 32 includes a third sub-flat tube 321 and a fourth sub-flat tube 322 spaced apart along the second direction. One end of the third sub-flat tube 321 passes through the third sub-channel 1121, is located in the fourth sub-channel 1122, and communicates with the liquid outlet cavity 13. One end of the fourth sub-flat tube 322 is disposed in the fourth sub-channel 1122 and communicates with the liquid outlet cavity 13. The first manifold 33 is connected to the other end of the first sub-flat tube 311 and the other end of the third sub-flat tube 321 . The second manifold 34 is connected to the other end of the second sub-flat tube 312 and the other end of the fourth sub-flat tube 322 .

[0079] It should be noted that Figure 4 The dotted arrows in FIG. 1 are the flow paths of the coolant in the liquid cooling structure 30 and the middle beam 10. Figure 4-Figure 9 It can be seen that by providing the liquid inlet cavity 12 and the liquid outlet cavity 13 in the middle beam 10, the coolant first enters the liquid inlet cavity 12, and then is divided through the first sub-channel 1111 and flows to the first sub-flat tube 311 and the second sub-flat tube 312 respectively, thereby performing heat conduction and heat exchange on the battery cells located on the first sub-flat tube 311 and the second sub-flat tube 312; then, the coolant passes through the first manifold 33 and the second manifold 34 respectively, and flows to the third sub-flat tube 321 and the fourth sub-flat tube 322 respectively; then, the coolant in the third sub-flat tube 321 and the fourth sub-flat tube 322 is gathered in the fourth sub-channel 1122 and flows into the liquid outlet cavity 13, thereby realizing the inlet and outlet circulation of the coolant.

[0080] like Figure 5 As shown, the corresponding communication positions of the first and second sub-flat tubes 311, 312 with the first sub-channel 1111, and the corresponding communication positions of the third and fourth sub-flat tubes 321, 322 with the fourth sub-channel 1122 are not on the same horizontal line, but are staggered, which can facilitate the corresponding communication with the liquid inlet cavity 12 and the liquid outlet cavity 13, respectively, and facilitate the flow of coolant in the liquid inlet cavity 12 and the liquid outlet cavity 13; and, by using the middle beam 10 as a chamber structure for accommodating coolant and directly realizing the liquid inlet and outlet, the flow paths of the coolant on the first battery module and the second battery module can be shortened, thereby improving the heat exchange effect on the first battery module and the second battery module.

[0081] Optionally, in this embodiment, the liquid inlet chamber 12 is connected to both the first sub-channel 1111 and the third sub-channel 1121. One end of the third sub-flat tube 321 passes through the third sub-channel 1121 and is welded to the middle beam 10 to seal the third sub-channel 1121. The liquid outlet chamber 13 is connected to both the second sub-channel 1112 and the fourth sub-channel 1122. One end of the second sub-flat tube 312 passes through the second sub-channel 1112 and is welded to the middle beam 10 to seal the second sub-channel 1112.

[0082] By connecting the liquid inlet chamber 12 to the first sub-channel 1111 and the third sub-channel 1121 at the same time, and connecting the liquid outlet chamber 13 to the second sub-channel 1112 and the fourth sub-channel 1122 at the same time, the structures of the liquid inlet chamber 12, the first sub-channel 1111 and the third sub-channel 1121 on one side of the middle beam 10 and the liquid outlet chamber 13, the second sub-channel 1112 and the fourth sub-channel 1122 on the other side of the middle beam 10 are actually roughly the same. In this way, the probability of assembly errors can be reduced during actual assembly. Specifically, the first and second sub-flat tubes 311, 312 can also pass through the fourth sub-channel 1122 to communicate with the liquid outlet cavity 13, while the third and fourth sub-flat tubes 321, 322 can pass through the first sub-channel 1111 to communicate with the liquid inlet cavity 12. As long as the positions where the first and second sub-flat tubes 311, 312 communicate with each other and the positions where the third and fourth sub-flat tubes 321, 322 communicate with each other are staggered, the circulation of the coolant can be achieved. As will be readily appreciated, this arrangement further improves the assembly efficiency of the liquid cooling structure 30 and the intermediate beam 10.

[0083] Furthermore, in order to facilitate the connection between the liquid inlet cavity 12 and the liquid outlet cavity 13 in the middle beam 10 and the coolant supply device, realize the circulation of the coolant, and reasonably control the temperature and flow of the coolant, in this embodiment, the liquid cooling component 100 also includes a liquid inlet pipe 40 and a liquid outlet pipe 50. The liquid inlet pipe 40 is arranged on the middle beam 10 and is connected to the liquid inlet cavity 12; the liquid outlet pipe 50 is arranged on the middle beam 10 and is connected to the liquid outlet cavity 13.

[0084] It should be noted that in this embodiment, the liquid inlet pipe 40 and the liquid outlet pipe 50 are located on the same side of the center beam 10, which facilitates simultaneous connection of both to the coolant supply device, saving pipe length and space requirements for the battery pack 1100, thereby reducing production costs. Of course, in other embodiments, the liquid inlet pipe 40 and the liquid outlet pipe 50 can also be located on opposite sides of the center beam 10, or on adjacent sides, etc.

[0085] Please continue to combine Figure 5-Figure 9Specifically in this embodiment, the middle beam 10 includes a beam body 14, a first connecting portion 15, a second connecting portion 16, a first mounting portion 17 and a second mounting portion 18. The beam body 14, the first connecting portion 15 and the first mounting portion 17 are connected in sequence along the third direction, the beam body 14, the second connecting portion 16 and the second mounting portion 18 are connected in sequence along the third direction, and the first connecting portion 15 and the second connecting portion 16 are spaced apart along the second direction, and the first mounting portion 17 and the second mounting portion 18 are spaced apart along the second direction.

[0086] The liquid inlet chamber 12 includes a first liquid inlet chamber 121 and a second liquid inlet chamber 122 that are connected to each other. The first connecting portion 15 has the first liquid inlet chamber 121. The liquid inlet pipe 40 is arranged on the first connecting portion 15 and is connected to the first liquid inlet chamber 121. The first mounting portion 17 has the second liquid inlet chamber 122, a first sub-channel 1111 and a third sub-channel 1121. The first sub-channel 1111 is connected to the second liquid inlet chamber 122. One end of the first sub-flat tube 311 and one end of the second sub-flat tube 312 are both connected to the second liquid inlet chamber 122.

[0087] The liquid outlet cavity 13 includes a first liquid outlet cavity 131 and a second liquid outlet cavity 132 that are interconnected. The second connecting portion 16 has the first liquid outlet cavity 131. The liquid outlet pipe 50 is disposed on the second connecting portion 16 and is in communication with the first liquid outlet cavity 131. The second mounting portion 18 has the second liquid outlet cavity 132, a second sub-channel 1112, and a fourth sub-channel 1122. The fourth sub-channel 1122 is in communication with the second liquid outlet cavity 132. One end of the second sub-flat tube 312 and one end of the fourth sub-flat tube 322 are both in communication with the second liquid outlet cavity 132. The first, second, and third directions are perpendicular to each other.

[0088] The first connecting portion 15 and the second connecting portion 16 facilitate connection to the liquid inlet pipe 40 and the liquid outlet pipe 50, respectively. The first mounting portion 17 and the second mounting portion 18 facilitate installation of the first liquid-cooled flat tube 31 and the second liquid-cooled flat tube 32 without interfering with the installation of the liquid inlet pipe 40 and the liquid outlet pipe 50. Furthermore, the aforementioned arrangement separates the liquid inlet chamber 12 and the liquid outlet chamber 13, forming a first liquid inlet chamber 121, a second liquid inlet chamber 122, a first liquid outlet chamber 131, and a second liquid outlet chamber 132, respectively. Since the first connecting portion 15 and the second connecting portion 16 are spaced apart, the coolants in the first liquid inlet chamber 121 and the first liquid outlet chamber 131 do not interfere with each other, making the coolants in both chambers less susceptible to heat conduction, thereby improving heat exchange. Since the first mounting portion 17 and the second mounting portion 18 are also spaced apart, it can be ensured that the coolants in the second liquid inlet cavity 122 and the second liquid outlet cavity 132 do not affect each other, and the coolants in the two are not easily affected by heat conduction, thereby further improving the heat exchange effect.

[0089] It should be noted that in order to facilitate the connection between the liquid inlet pipe 40 and the liquid outlet pipe 50, in this embodiment, the first connecting portion 15 is provided with a first liquid inlet hole 151, the liquid inlet pipe 40 passes through the first liquid inlet hole 151, and is connected to the first liquid inlet cavity 121; the second connecting portion 16 is provided with a first liquid outlet hole 161, the liquid outlet pipe 50 passes through the first liquid outlet hole 161, and is connected to the first liquid outlet cavity 131.

[0090] In addition, it should be noted that since the liquid cooling structure 30 in this embodiment is provided in plurality, the corresponding number of first mounting portions 17 and second mounting portions 18 is also multiple, the first connecting portion 15 and the second connecting portion 16 are both extended along the first direction, the multiple first mounting portions 17 are spaced apart along the first direction on the first connecting portion 15, and the multiple second mounting portions 18 are spaced apart along the first direction on the second connecting portion 16. It is easy to understand that through such a design, the first liquid inlet cavity 121 can actually be understood as a main liquid inlet cavity, and the multiple second liquid inlet cavities 122 can be understood as liquid inlet sub-cavities, that is, the multiple second liquid inlet cavities 122 are all connected to the first liquid inlet cavity 121, and the cooling liquid entering the first liquid inlet cavity 121 through the liquid inlet pipe 40 flows into the multiple second liquid inlet cavities 122 respectively. Similarly, the first liquid outlet cavity 131 can be understood as the main liquid outlet cavity, and the multiple second liquid outlet cavities 132 can be understood as liquid outlet sub-cavities, that is, the multiple second liquid outlet cavities 132 are all connected to the first liquid outlet cavity 131, and the coolant transported through the third sub-flat tube 321 and the fourth sub-flat tube 322 flows into the second liquid outlet cavity 132, and then the coolant in the multiple second liquid outlet cavities 132 simultaneously converges into the first liquid outlet cavity 131, and finally flows out from the liquid outlet pipe 50.

[0091] Combine Figure 8 and Figure 9 In this embodiment, the first connecting portion 15 further defines a second liquid inlet hole 152, through which the first liquid inlet cavity 121 communicates with the second liquid inlet cavity 122. Similarly, the second connecting portion 16 further defines a second liquid outlet hole 162, through which the first liquid outlet cavity 131 communicates with the second liquid outlet cavity 132. Thus, in actual manufacturing, the flow rate and circulation speed of the coolant can be rationally controlled by adjusting the sizes of the second liquid inlet hole 152 and the second liquid outlet hole 162, or by increasing or decreasing their numbers, according to design requirements, thereby further improving the heat exchange effect.

[0092] Please continue to combine Figure 6 and Figure 7 In order to improve the overall structural stability of the middle beam 10 and ensure the smoothness of the coolant flow and the heat exchange effect, in this embodiment, the middle beam 10 further includes a first reinforcement portion 21, the two ends of which are respectively connected to the first connecting portion 15 and the second connecting portion 16. Figure 6 and Figure 7As shown, it can be seen that a hollow structure is formed between the first reinforcement part 21, the first connecting part 15, the second connecting part 16 and the beam body 14. The hollow structure can further avoid the mutual influence of the coolant in the first liquid inlet cavity 121 and the first liquid outlet cavity 131, thereby improving the heat exchange effect, and also reducing the weight of the middle beam 10 to a certain extent, making the battery pack 1100 structure more lightweight.

[0093] In order to improve the overall structural stability of the middle beam 10 and ensure the smoothness and heat exchange effect of the coolant during the flow process, in this embodiment, the middle beam 10 further includes a second reinforcement portion 22, the two ends of which are respectively connected to the first mounting portion 17 and the second mounting portion 18. Figure 6 and Figure 7 As shown, it can be seen that in fact, a hollow structure is also formed between the second reinforcement part 22, the first mounting part 17, the second mounting part 18, the first connecting part 15 and the second connecting part 16, which can further avoid the coolant in the second liquid inlet cavity 122 and the second liquid outlet cavity 132 from affecting each other, thereby improving the heat exchange effect, and also reducing the weight of the middle beam 10 to a certain extent, making the battery pack 1100 structure more lightweight.

[0094] In addition, in order to further reduce the weight of the middle beam 10, improve the lightweight level of the battery pack 1100, and reduce production costs, in this embodiment, a hollow structure is also provided inside the beam body 14. The number of the hollow structures is not limited and can be determined according to actual design requirements.

[0095] In summary, embodiments of the present invention provide a liquid cooling assembly 100, a battery pack 1100, and a new energy vehicle 1000. The liquid cooling assembly 100 includes a center beam 10 and a liquid cooling structure 30. The center beam 10 has a mounting channel 11 extending through the bottom thereof. The liquid cooling structure 30 is inserted into the mounting channel 11 and welded to the center beam 10. By inserting and fitting the liquid cooling structure 30 through the mounting channel 11 of the center beam 10 and then welding the liquid cooling structure 30 to the center beam 10, the liquid cooling structure 30 and the center beam 10 are integrated into a single structure, thereby enabling the liquid cooling assembly 100 to perform both liquid cooling and battery module separation. When assembling the battery pack 1100, the middle beam 10 can be directly hoisted so that the middle beam 10 and the liquid cooling structure 30 are installed as a whole in the battery shell 200, thereby simplifying the assembly steps and improving assembly efficiency; and this integrated design has good overall structural stability, avoiding mechanical interference between the liquid cooling structure 30 and the middle beam 10, thereby improving the reliability of the battery pack 1100.

[0096] The battery pack 1100 includes the liquid cooling assembly 100 and has all the functions and benefits of the liquid cooling assembly 100 .

[0097] The new energy vehicle 1000 includes a battery pack 1100 , which has all the functions and beneficial effects of the battery pack 1100 .

[0098] The foregoing description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A liquid cooling component, characterized in that: include: An intermediate beam (10), wherein the bottom of the intermediate beam (10) has a mounting channel (11) extending therethrough; as well as A liquid cooling structure (30) is provided in the installation channel (11), and the liquid cooling structure (30) is welded to the middle beam (10).

2. The liquid cooling assembly according to claim 1, wherein: The installation channel (11) comprises a first installation channel (111) and a second installation channel (112), wherein the first installation channel (111) and the second installation channel (112) are spaced apart along a first direction; The liquid cooling structure (30) includes a first liquid cooling flat tube (31), a second liquid cooling flat tube (32), a first manifold (33), and a second manifold (34); the first liquid cooling flat tube (31) and the second liquid cooling flat tube (32) are spaced apart along the first direction and respectively pass through the first installation channel (111) and the second installation channel (112) along the second direction; the first liquid cooling flat tube (31) and the second liquid cooling flat tube (32) are both welded to the middle beam (10); The first manifold (33) is simultaneously connected to one end of the first liquid-cooled flat tube (31) and one end of the second liquid-cooled flat tube (32), and the second manifold (34) is simultaneously connected to the other end of the first liquid-cooled flat tube (31) and the other end of the second liquid-cooled flat tube (32); The first direction and the second direction form an angle.

3. The liquid cooling assembly according to claim 2, characterized in that The interior of the middle beam (10) further comprises a liquid inlet cavity (12) and a liquid outlet cavity (13) which are independently arranged; the first installation channel (111) comprises a first sub-channel (1111) and a second sub-channel (1112) which are arranged at intervals along the second direction; the second installation channel (112) comprises a third sub-channel (1121) and a fourth sub-channel (1122) which are arranged at intervals along the second direction; the first sub-channel (1111) and the third sub-channel (1121) are located on one side of the middle beam (10), and the first sub-channel (1111) is in communication with the liquid inlet cavity (12); the second sub-channel (1112) and the fourth sub-channel (1122) are located on the other side of the middle beam (10), and the fourth sub-channel (1122) is in communication with the liquid outlet cavity (13); The first liquid-cooling flat tube (31) comprises a first sub-flat tube (311) and a second sub-flat tube (312) spaced apart along the second direction, one end of the first sub-flat tube (311) is disposed in the first sub-channel (1111) and communicates with the liquid inlet cavity (12), one end of the second sub-flat tube (312) is passed through the second sub-channel (1112), is disposed in the first sub-channel (1111), and communicates with the liquid inlet cavity (12); the second liquid-cooling flat tube (32) comprises a third sub-flat tube (321) and a fourth sub-flat tube (322) spaced apart along the second direction, one end of the third sub-flat tube (321) is passed through the third sub-channel (1121), is located in the fourth sub-channel (1122), and communicates with the liquid outlet cavity (13), one end of the fourth sub-flat tube (322) is disposed in the fourth sub-channel (1122), and communicates with the liquid outlet cavity (13); The first conduit (33) is simultaneously in communication with the other end of the first sub-flat tube (311) and the other end of the third sub-flat tube (321), and the second conduit (34) is simultaneously in communication with the other end of the second sub-flat tube (312) and the other end of the fourth sub-flat tube (322).

4. The liquid cooling assembly according to claim 3, characterized in that The liquid cooling assembly (100) further includes a liquid inlet pipe (40) and a liquid outlet pipe (50), wherein the liquid inlet pipe (40) is arranged on the middle beam (10) and communicates with the liquid inlet cavity (12); and the liquid outlet pipe (50) is arranged on the middle beam (10) and communicates with the liquid outlet cavity (13).

5. The liquid cooling assembly according to claim 4, characterized in that The intermediate beam (10) comprises a beam body (14), a first connecting portion (15), a second connecting portion (16), a first mounting portion (17) and a second mounting portion (18); the beam body (14), the first connecting portion (15) and the first mounting portion (17) are sequentially connected along a third direction; the beam body (14), the second connecting portion (16) and the second mounting portion (18) are sequentially connected along the third direction; the first connecting portion (15) and the second connecting portion (16) are spaced apart along the second direction; and the first mounting portion (17) and the second mounting portion (18) are spaced apart along the second direction; The liquid inlet cavity (12) comprises a first liquid inlet cavity (121) and a second liquid inlet cavity (122) which are connected to each other; the first connecting portion (15) comprises the first liquid inlet cavity (121); the liquid inlet pipe (40) is arranged on the first connecting portion (15) and is connected to the first liquid inlet cavity (121); the first mounting portion (17) comprises the second liquid inlet cavity (122), the first sub-channel (1111) and the third sub-channel (1121); the first sub-channel (1111) is connected to the second liquid inlet cavity (122); one end of the first sub-flat tube (311) and one end of the second sub-flat tube (312) are both connected to the second liquid inlet cavity (122); The liquid outlet cavity (13) comprises a first liquid outlet cavity (131) and a second liquid outlet cavity (132) which are connected to each other; the second connecting portion (16) comprises the first liquid outlet cavity (131); the liquid outlet pipe (50) is arranged on the second connecting portion (16) and is connected to the first liquid outlet cavity (131); the second mounting portion (18) comprises the second liquid outlet cavity (132), the second sub-channel (1112) and the fourth sub-channel (1122); the fourth sub-channel (1122) is connected to the second liquid outlet cavity (132); one end of the second sub-flat tube (312) and one end of the fourth sub-flat tube (322) are both connected to the second liquid outlet cavity (132); The first direction, the second direction and the third direction are perpendicular to each other.

6. The liquid cooling assembly according to claim 5, characterized in that The intermediate beam (10) further includes a first reinforcement portion (21), two ends of the first reinforcement portion (21) being respectively connected to the first connection portion (15) and the second connection portion (16); and / or, The intermediate beam (10) further includes a second reinforcement portion (22), and two ends of the second reinforcement portion (22) are respectively connected to the first mounting portion (17) and the second mounting portion (18).

7. The liquid cooling assembly according to claim 1, wherein: The middle beam (10) is extended along a first direction, the number of the mounting channels (11) and the number of the liquid cooling structures (30) are both multiple, and the multiple mounting channels (11) are spaced apart along the first direction; the multiple liquid cooling structures (30) are spaced apart along the first direction and correspond one-to-one to the multiple mounting channels (11), and each of the liquid cooling structures (30) is passed through the mounting channel (11) along a second direction; The first direction and the second direction form an angle.

8. The liquid cooling assembly according to claim 7, characterized in that: The bottom of the middle beam (10) is also provided with a plurality of avoidance gaps (23), and one avoidance gap (23) is provided between each of two adjacent liquid cooling structures (30).

9. A battery pack, characterized in that: The invention comprises a battery shell (200) and a liquid cooling assembly (100) according to any one of claims 1 to 8, wherein the liquid cooling structure (30) and the middle beam (10) are both arranged in the battery shell (200), and the middle beam (10) is connected to the bottom wall of the battery shell (200).

10. A new energy vehicle, characterized in that: Comprising the battery pack (1100) as claimed in claim 9.

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