Liquid cooling assembly, battery shell, battery pack and new energy automobile

Abstract

The embodiment of the utility model provides a liquid cooling assembly, a battery shell, a battery pack and a new energy automobile, and relates to the technical field of power batteries. The liquid cooling assembly comprises a liquid inlet and outlet pipeline, a liquid inlet chamber and a liquid outlet chamber, the liquid inlet and outlet pipeline comprises a first liquid inlet pipe, a second liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe, the first liquid outlet pipe, the first liquid inlet pipe, the second liquid inlet pipe and the second liquid outlet pipe are sequentially arranged, the first liquid inlet pipe communicates with the first liquid outlet pipe, and the second liquid outlet pipe communicates with the second liquid outlet pipe. The second liquid inlet pipe is communicated with the second liquid outlet pipe; the liquid inlet chamber is communicated with the first liquid inlet pipe and the second liquid inlet pipe at the same time, and the liquid outlet chamber is communicated with the first liquid outlet pipe and the second liquid outlet pipe at the same time. The liquid cooling assembly can reduce the temperature difference between the battery cells, improve the heat exchange efficiency, improve the safety of the battery pack and prolong the service life of the battery cells.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a liquid cooling component, a battery shell, a battery pack and a new energy vehicle. Background Art

[0002] With the rapid development of new energy vehicles, the application of power batteries is becoming more and more extensive. During the use of power batteries, the battery cells of the battery pack will generate heat. Currently, a liquid cooling system is usually used to dissipate heat from the battery cells.

[0003] However, the existing liquid cooling system has the problem of uneven temperature on the left and right sides of the battery pack, which is not conducive to heat exchange between the entire pack and the outside, and has poor heat exchange efficiency, which can easily affect the safety of the battery pack and the service life of the battery cells. Utility Model Content

[0004] The purpose of the utility model is to provide a liquid cooling component, a battery shell, a battery pack and a new energy vehicle, which can reduce the temperature difference between battery cells, improve the heat exchange efficiency, and enhance the safety of the battery pack and the service life of the battery cells.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a liquid cooling assembly, comprising:

[0007] Inlet and outlet liquid pipelines, the inlet and outlet liquid pipelines comprising a first liquid inlet pipe, a second liquid inlet pipe, a first liquid outlet pipe and a second liquid outlet pipe, the first liquid outlet pipe, the first liquid inlet pipe, the second liquid inlet pipe and the second liquid outlet pipe are arranged in sequence, the first liquid inlet pipe is connected to the first liquid outlet pipe, and the second liquid inlet pipe is connected to the second liquid outlet pipe;

[0008] a liquid inlet chamber, the liquid inlet chamber being in communication with the first liquid inlet pipe and the second liquid inlet pipe; and

[0009] The liquid outlet chamber is connected to the first liquid outlet pipe and the second liquid outlet pipe at the same time.

[0010] In an optional embodiment, the liquid inlet chamber and the liquid outlet chamber are both located on the same side of the first liquid outlet pipe, the first liquid inlet pipe, the second liquid inlet pipe, and the second liquid outlet pipe.

[0011] In an optional embodiment, the liquid outlet chamber is provided with a first avoidance gap and a second avoidance gap, one end of the first liquid inlet pipe is arranged in the first avoidance gap and is connected to the liquid inlet chamber; one end of the second liquid inlet pipe is arranged in the second avoidance gap and is connected to the liquid inlet chamber.

[0012] In an optional embodiment, the first liquid inlet pipe is disposed in the liquid outlet chamber and communicated with the liquid inlet chamber; the second liquid inlet pipe is disposed in the liquid outlet chamber and communicated with the liquid inlet chamber.

[0013] In an optional embodiment, the liquid cooling assembly further includes a connecting piece, and the liquid inlet chamber and the liquid outlet chamber are fixedly connected via the connecting piece.

[0014] In a second aspect, the utility model provides a battery shell, comprising a shell and a liquid cooling assembly as described in any one of the aforementioned embodiments, wherein the first liquid outlet pipe, the first liquid inlet pipe, the second liquid inlet pipe, the second liquid outlet pipe, the liquid inlet chamber and the liquid outlet chamber are all arranged on the shell.

[0015] In an optional embodiment, a first installation cavity and a second installation cavity are respectively provided at the top and the bottom of the shell, and the first installation cavity is used to support the battery module; the first liquid outlet pipe, the first liquid inlet pipe, the second liquid inlet pipe, the second liquid outlet pipe, the liquid inlet chamber and the liquid outlet chamber are all arranged in the second installation cavity.

[0016] In an optional embodiment, the battery shell also includes a fixing plate connected to the bottom of the shell for fixing the first liquid outlet pipe, the first liquid inlet pipe, the second liquid inlet pipe, the second liquid outlet pipe, the liquid inlet chamber and the liquid outlet chamber to the second mounting cavity.

[0017] In a third aspect, the utility model provides a battery pack, comprising a battery module and a battery shell as described in any one of the aforementioned embodiments, wherein the battery module is arranged in the shell, and the liquid cooling assembly is used to dissipate heat from the battery module.

[0018] In a fourth aspect, the utility model provides a new energy vehicle, comprising the battery pack described in the aforementioned embodiment.

[0019] The beneficial effects of the embodiments of the utility model include:

[0020] The liquid cooling component includes an inlet and outlet liquid pipeline, an inlet chamber and an outlet chamber. The inlet and outlet liquid pipeline includes a first inlet pipe, a second inlet pipe, a first outlet pipe and a second outlet pipe. The first outlet pipe, the first inlet pipe, the second inlet pipe and the second outlet pipe are arranged in sequence. The first inlet pipe is connected to the first outlet pipe, and the second inlet pipe is connected to the second outlet pipe. The inlet chamber is connected to the first inlet pipe and the second inlet pipe at the same time, and the outlet chamber is connected to the first outlet pipe and the second outlet pipe at the same time. That is to say, the coolant flows into the first inlet pipe and the second inlet pipe through the inlet chamber, and then the coolant in the first inlet pipe flows to the first outlet pipe and flows out from the outlet chamber. Similarly, the coolant in the second inlet pipe flows to the second outlet pipe and flows out from the outlet chamber. Through this arrangement, the flow direction of the coolant in the liquid cooling component can be: flowing in from the first inlet pipe and the second inlet pipe located in the middle, and then flowing out from the first outlet pipe and the second outlet pipe located on both sides. In this way, the high-temperature area of ​​the battery pack can be adjusted to the two sides of the battery pack, increasing the heat dissipation area between the battery cells and the shell in the high-temperature area, making the temperature on the left and right sides of the battery pack uniform, thereby reducing the temperature difference between the battery cells, improving heat exchange efficiency, and enhancing the safety of the battery pack and the service life of the battery cells.

[0021] The battery housing includes the liquid cooling assembly, which has all the beneficial effects of the liquid cooling assembly.

[0022] The battery pack includes the battery case, and has all the beneficial effects of the battery case.

[0023] The new energy vehicle includes the battery pack and has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 creative work.

[0025] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the utility model;

[0026] Figure 2 A schematic structural diagram of a battery case from a first perspective provided in an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the structure of a liquid cooling assembly provided in an embodiment of the utility model;

[0028] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0029] Figure 5 A partial structural cross-sectional view of a liquid cooling assembly provided in an embodiment of the utility model;

[0030] Figure 6 A schematic diagram of the structure of a liquid cooling assembly provided in other embodiments of the utility model;

[0031] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0032] Figure 8 A partial structural cross-sectional view of a liquid cooling assembly provided in other embodiments of the utility model;

[0033] Fig. 9 A schematic structural diagram of a battery case from a second viewing angle provided by an embodiment of the utility model;

[0034] Fig.10 A partial structural schematic diagram of a battery case provided in an embodiment of the utility model.

[0035] Icons: 1000-new energy vehicle; 1100-battery pack; 110-battery shell; 100-liquid cooling assembly; 10-liquid inlet and outlet pipelines; 11-first liquid inlet pipe; 12-second liquid inlet pipe; 13-first liquid outlet pipe; 14-second liquid outlet pipe; 20-liquid inlet chamber; 30-liquid outlet chamber; 31-first avoidance gap; 32-second avoidance gap; 40-connecting piece; 50-liquid inlet interface; 60-liquid outlet interface; 70-first connecting pipe; 80-second connecting pipe; 120-shell; 121-first installation cavity; 122-second installation cavity; 130-fixing plate; 1200-vehicle body. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] 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, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] As described in the background technology, with the rapid development of new energy vehicles, power batteries are used more and more widely. During the use of power batteries, the battery cells of the battery pack will generate heat. Currently, a liquid cooling system is usually used to dissipate the heat from the battery cells.

[0043] However, the inventors have discovered that, due to the spatial layout of the battery pack in the height direction and the positions of the water inlet and outlet, the liquid cooling pipeline usually adopts a single-sided entry and exit method, which makes the temperature on one side of the battery pack low and the temperature on the other side high, resulting in uneven temperature. This is not conducive to heat exchange between the entire pack and the outside, resulting in poor heat exchange efficiency, which can easily affect the safety of the battery pack and the service life of the battery cells.

[0044] Based on this, please refer to Figure 1-Figure 10The embodiment of the utility model provides a liquid cooling assembly 100, a battery shell 110, a battery pack 1100 and a new energy vehicle 1000, which can effectively improve the above-mentioned technical problems, that is, it can reduce the temperature difference between the battery cells, improve the heat exchange efficiency, and enhance the safety of the battery pack 1100 and the service life of the battery cells. The liquid cooling assembly 100, the battery shell 110, the battery pack 1100 and the new energy vehicle 1000 will be described in detail below.

[0045] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure 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 installed on the vehicle body 1200 , thereby providing electric energy for the vehicle body 1200 to realize various functions of the vehicle body 1200 .

[0046] It is easy for those skilled in the art to know that the battery pack 1100 may include a battery shell 110 and a battery module, and the battery module is arranged in the battery shell 110 . The battery module serves as the power source of the battery pack 1100 , thereby providing electrical energy for the vehicle body 1200 .

[0047] Specifically, please refer to Figure 2 , Figure 2 A schematic diagram of the structure of the battery case 110 provided in the present embodiment from a first perspective, combined with Figure 2 In order to achieve cooling, heat dissipation or heating of the battery module, the battery shell 110 includes a shell 120 and a liquid cooling assembly 100. The liquid cooling assembly 100 is arranged in the shell 120 for dissipating heat from the battery module.

[0048] Please refer to Figure 3 , Figure 3 The schematic diagram of the structure of the liquid cooling assembly 100 provided in this embodiment is shown in FIG. Figure 3 The liquid cooling component 100 includes a liquid inlet and outlet pipeline 10, a liquid inlet chamber 20 and a liquid outlet chamber 30. The liquid inlet and outlet pipeline 10 includes a first liquid inlet pipe 11, a second liquid inlet pipe 12, a first liquid outlet pipe 13 and a second liquid outlet pipe 14. The first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14 are arranged in sequence. The first liquid inlet pipe 11 is connected to the first liquid outlet pipe 13, and the second liquid inlet pipe 12 is connected to the second liquid outlet pipe 14; the liquid inlet chamber 20 is connected to the first liquid inlet pipe 11 and the second liquid inlet pipe 12 at the same time, and the liquid outlet chamber 30 is connected to the first liquid outlet pipe 13 and the second liquid outlet pipe 14 at the same time.

[0049] That is to say, the coolant flows into the first liquid inlet pipe 11 and the second liquid inlet pipe 12 through the liquid inlet chamber 20, and then the coolant in the first liquid inlet pipe 11 flows to the first liquid outlet pipe 13 and flows out from the liquid outlet chamber 30. Similarly, the coolant in the second liquid inlet pipe 12 flows to the second liquid outlet pipe 14 and flows out from the liquid outlet chamber 30. Through this arrangement, the flow direction of the coolant in the liquid cooling assembly 100 can be: flowing in from the first liquid inlet pipe 11 and the second liquid inlet pipe 12 located in the middle, and then flowing out from the first liquid outlet pipe 13 and the second liquid outlet pipe 14 located on both sides. In this way, the high temperature area of ​​the battery pack 1100 can be adjusted to both sides of the battery pack 1100, increasing the heat dissipation area between the battery cells in the high temperature area and the shell 120, so that the temperature on the left and right sides of the battery pack 1100 is uniform, thereby reducing the temperature difference between the battery cells, improving the heat exchange efficiency, and improving the safety of the battery pack 1100 and the service life of the battery cells.

[0050] Combination Figure 2 and Figure 3 It is easy to understand that the first liquid outlet pipe 13 , the first liquid inlet pipe 11 , the second liquid inlet pipe 12 , the second liquid outlet pipe 14 , the liquid inlet chamber 20 and the liquid outlet chamber 30 are all disposed in the housing 120 .

[0051] It should be noted that, in the present embodiment, the number of the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14 are all one; of course, in other embodiments, the number of the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14 can be multiple, and the specific number needs to be determined according to the layout requirements of the corresponding battery module, as long as the cooling liquid can enter from the middle and flow out from both sides respectively to reduce the temperature difference between the battery cells.

[0052] Please continue to combine Figure 2 In order to facilitate the installation of the liquid cooling assembly 100 on the shell 120, the liquid inlet chamber 20 and the liquid outlet chamber 30 are both located on the same side of the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14, so that it is convenient to connect with the cooling liquid supply device of the battery pack 1100, and it can also save the space layout of the battery pack 1100.

[0053] It should be noted that, in some other embodiments, the liquid inlet chamber 20 and the liquid outlet chamber 30 may also be located on two opposite sides or two adjacent sides.

[0054] Furthermore, in order to facilitate the input of cooling liquid into the liquid inlet chamber 20 and the recovery of cooling liquid from the liquid outlet chamber 30, in the present embodiment, the liquid cooling assembly 100 also includes a liquid inlet interface 50 and a liquid outlet interface 60, the liquid inlet interface 50 is connected to the liquid inlet chamber 20, and the liquid outlet interface 60 is connected to the liquid outlet chamber 30.

[0055] In this embodiment, since the liquid inlet chamber 20 and the liquid outlet chamber 30 are located on the same side, in order to make the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14 located on the same horizontal plane, the heat conduction and heat dissipation of the battery module can be better achieved. Figure 4 and Figure 5 , Figure 4 for Figure 3 A partial enlarged view of point A in the middle. Figure 5 A partial structural cross-sectional view of the liquid cooling assembly 100 provided in this embodiment, combined with Figure 3-Figure 5 The liquid outlet chamber 30 is provided with a first avoidance gap 31 and a second avoidance gap 32, one end of the first liquid inlet pipe 11 is arranged in the first avoidance gap 31 and is connected to the liquid inlet chamber 20; one end of the second liquid inlet pipe 12 is arranged in the second avoidance gap 32 and is connected to the liquid inlet chamber 20.

[0056] like Figure 4 and Figure 5 As shown, it is easy to understand that the setting of the first avoidance gap 31 and the second avoidance gap 32 can avoid the connection between the first liquid inlet pipe 11 and the second liquid inlet pipe 12 and the liquid inlet chamber 20, and make the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14 located on the same horizontal plane, so as to better conduct heat and dissipate heat with the battery module; and it can also save the layout space of the battery pack 1100 to a certain extent, thereby saving costs.

[0057] Combination Figure 4 Furthermore, in order to better fix the liquid inlet chamber 20 and the liquid outlet chamber 30, in this embodiment, the liquid cooling assembly 100 further includes a connector 40, and the liquid inlet chamber 20 and the liquid outlet chamber 30 are fixedly connected through the connector 40. Specifically, the connector 40 can be connected and fixed to the liquid inlet chamber 20 and the liquid outlet chamber 30 by welding, bonding or bolting.

[0058] Please continue to combine Figure 3 In order to facilitate the arrangement of the first liquid inlet pipe 11, the second liquid inlet pipe 12, the first liquid outlet pipe 13 and the second liquid outlet pipe 14, and to facilitate the connection between the first liquid inlet pipe 11 and the first liquid outlet pipe 13, and the connection between the second liquid inlet pipe 12 and the second liquid outlet pipe 14, in the present embodiment, the liquid cooling assembly 100 further includes a first connecting pipe 70 and a second connecting pipe 80, the first liquid inlet pipe 11 and the first liquid outlet pipe 13 are connected via the first connecting pipe 70, and the second liquid inlet pipe 12 and the second liquid outlet pipe 14 are connected via the second connecting pipe 80.

[0059] It should be noted that, in this embodiment, the liquid inlet chamber 20 and the liquid outlet chamber 30 are independently arranged chambers, and then the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14 are located in the same horizontal plane by opening a relief gap in the liquid outlet chamber 30. Of course, in some other embodiments, the liquid inlet chamber 20 and the liquid outlet chamber 30 may also be an integrated structure, and the liquid outlet chamber 30 may not be provided with a relief gap. For example, please refer to Figure 6-Figure 8 , Figure 6 A schematic diagram of the structure of a liquid cooling assembly 100 provided in another embodiment, Figure 7 for Figure 6 A partial enlarged view of point B in the middle. Figure 8 A partial structural cross-sectional view of a liquid cooling assembly 100 provided in another embodiment, combined with Figure 6-Figure 8 The first liquid inlet pipe 11 is disposed in the liquid outlet chamber 30 and communicated with the liquid inlet chamber 20 ; the second liquid inlet pipe 12 is disposed in the liquid outlet chamber 30 and communicated with the liquid inlet chamber 20 .

[0060] It should be pointed out that, in the above-mentioned structure, the liquid inlet chamber 20 and the liquid outlet chamber 30 are integrated into one body, and the portion of the first liquid inlet pipe 11 in contact with the liquid outlet chamber 30 can be sealed by means of circumferential welding. Similarly, the portion of the second liquid inlet pipe 12 in contact with the liquid outlet chamber 30 can be sealed by means of circumferential welding. Then, the first liquid inlet pipe 11 and the second liquid inlet pipe 12 are connected to the liquid inlet chamber 20.

[0061] In actual use, in order to facilitate the disassembly and maintenance of the liquid cooling assembly 100, please refer to Fig. 9 and Fig.10 , Fig. 9 This is a schematic structural diagram of the battery case 110 provided in this embodiment from a second viewing angle. Fig.10 A partial structural diagram of the battery case 110 provided in this embodiment, combined with Figure 2 , Fig. 9 and Fig.10 A first mounting cavity 121 and a second mounting cavity 122 are respectively provided at the top and the bottom of the shell 120. The first mounting cavity 121 is used to carry the battery module; the liquid cooling assembly 100 is arranged in the second mounting cavity 122, that is, the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12, the second liquid outlet pipe 14, the liquid inlet chamber 20 and the liquid outlet chamber 30 are all arranged in the second mounting cavity 122.

[0062] In this way, the battery module can be directly installed in the first installation cavity 121, and the liquid cooling assembly 100 is arranged in the second installation cavity 122 opposite to the first installation cavity 121. In other words, the liquid cooling assembly 100 conducts heat dissipation to the battery module by contacting with the housing 120. With this arrangement, when the liquid cooling assembly 100 needs to be replaced, it only needs to be removed from the second installation cavity 122 without removing the battery module. The maintenance convenience and versatility are good, which can reduce maintenance costs and improve maintenance efficiency.

[0063] Furthermore, in order to better fix the liquid cooling assembly 100 in the second installation cavity 122, in the present embodiment, the battery shell 110 also includes a fixing plate 130, which is connected to the bottom of the shell 120, so as to fix the liquid cooling assembly 100 in the second installation cavity 122, that is, to fix the first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12, the second liquid outlet pipe 14, the liquid inlet chamber 20 and the liquid outlet chamber 30 in the second installation cavity 122.

[0064] It should be noted that, in order to improve the installation stability, there may be multiple fixing plates 130 , and the multiple fixing plates 130 are arranged at intervals.

[0065] In summary, an embodiment of the utility model provides a liquid cooling component 100, a battery shell 110, a battery pack 1100 and a new energy vehicle 1000. The liquid cooling component 100 includes an inlet and outlet liquid pipeline 10, a liquid inlet chamber 20 and a liquid outlet chamber 30. The inlet and outlet liquid pipeline 10 includes a first liquid inlet pipe 11, a second liquid inlet pipe 12, a first liquid outlet pipe 13 and a second liquid outlet pipe 14. The first liquid outlet pipe 13, the first liquid inlet pipe 11, the second liquid inlet pipe 12 and the second liquid outlet pipe 14 are arranged in sequence. The first liquid inlet pipe 11 is connected to the first liquid outlet pipe 13, and the second liquid inlet pipe 12 is connected to the second liquid outlet pipe 14; the liquid inlet chamber 20 is connected to the first liquid inlet pipe 11 and the second liquid inlet pipe 12 at the same time, and the liquid outlet chamber 30 is connected to the first liquid outlet pipe 13 and the second liquid outlet pipe 14 at the same time. That is to say, the coolant flows into the first liquid inlet pipe 11 and the second liquid inlet pipe 12 through the liquid inlet chamber 20, and then the coolant in the first liquid inlet pipe 11 flows to the first liquid outlet pipe 13 and flows out of the liquid outlet chamber 30. Similarly, the coolant in the second liquid inlet pipe 12 flows to the second liquid outlet pipe 14 and flows out of the liquid outlet chamber 30. Through this arrangement, the flow direction of the coolant in the liquid cooling component 100 can be: flowing in from the first liquid inlet pipe 11 and the second liquid inlet pipe 12 located in the middle, and then flowing out from the first liquid outlet pipe 13 and the second liquid outlet pipe 14 located on both sides. In this way, the high temperature area of ​​the battery pack 1100 can be adjusted to both sides of the battery pack 1100, increasing the heat dissipation area between the battery cells in the high temperature area and the shell 120, so that the temperature on the left and right sides of the battery pack 1100 is uniform.

[0066] Therefore, the liquid cooling assembly 100 can reduce the temperature difference between the battery cells, improve the heat exchange efficiency, and enhance the safety of the battery pack 1100 and the service life of the battery cells.

[0067] The battery housing 110 includes the liquid cooling assembly 100 , which has all the functions and benefits of the liquid cooling assembly 100 .

[0068] The battery pack 1100 includes the battery case 110 , and has all the functions and beneficial effects of the battery case 110 .

[0069] The new energy vehicle 1000 includes the battery pack 1100 , which has all the functions and beneficial effects of the battery pack 1100 .

[0070] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A liquid cooling component, characterized in that: include: A liquid inlet and outlet pipeline (10), the liquid inlet and outlet pipeline (10) comprising a first liquid inlet pipe (11), a second liquid inlet pipe (12), a first liquid outlet pipe (13) and a second liquid outlet pipe (14), the first liquid outlet pipe (13), the first liquid inlet pipe (11), the second liquid inlet pipe (12) and the second liquid outlet pipe (14) being arranged in sequence, the first liquid inlet pipe (11) being in communication with the first liquid outlet pipe (13), and the second liquid inlet pipe (12) being in communication with the second liquid outlet pipe (14); a liquid inlet chamber (20), the liquid inlet chamber (20) being in communication with both the first liquid inlet pipe (11) and the second liquid inlet pipe (12); and A liquid outlet chamber (30), wherein the liquid outlet chamber (30) is communicated with the first liquid outlet pipe (13) and the second liquid outlet pipe (14) at the same time.

2. The liquid cooling assembly according to claim 1, characterized in that: The liquid inlet chamber (20) and the liquid outlet chamber (30) are both located on the same side of the first liquid outlet pipe (13), the first liquid inlet pipe (11), the second liquid inlet pipe (12), and the second liquid outlet pipe (14).

3. The liquid cooling assembly according to claim 2, characterized in that: The liquid outlet chamber (30) is provided with a first avoidance gap (31) and a second avoidance gap (32); one end of the first liquid inlet pipe (11) is arranged in the first avoidance gap (31) and is communicated with the liquid inlet chamber (20); one end of the second liquid inlet pipe (12) is arranged in the second avoidance gap (32) and is communicated with the liquid inlet chamber (20).

4. The liquid cooling assembly according to claim 2, characterized in that: The first liquid inlet pipe (11) is arranged through the liquid outlet chamber (30) and is communicated with the liquid inlet chamber (20); the second liquid inlet pipe (12) is arranged through the liquid outlet chamber (30) and is communicated with the liquid inlet chamber (20).

5. The liquid cooling assembly according to claim 2, characterized in that: The liquid cooling assembly (100) further comprises a connecting piece (40), and the liquid inlet chamber (20) and the liquid outlet chamber (30) are fixedly connected via the connecting piece (40).

6. A battery case, characterized in that: The invention comprises a shell (120) and the liquid cooling assembly (100) according to any one of claims 1 to 5, wherein the first liquid outlet pipe (13), the first liquid inlet pipe (11), the second liquid inlet pipe (12), the second liquid outlet pipe (14), the liquid inlet chamber (20) and the liquid outlet chamber (30) are all arranged in the shell (120).

7. The battery case according to claim 6, characterized in that: The top and bottom of the shell (120) are respectively provided with a first mounting cavity (121) and a second mounting cavity (122); the first mounting cavity (121) is used to carry a battery module; the first liquid outlet pipe (13), the first liquid inlet pipe (11), the second liquid inlet pipe (12), the second liquid outlet pipe (14), the liquid inlet chamber (20) and the liquid outlet chamber (30) are all arranged in the second mounting cavity (122).

8. The battery case according to claim 7, characterized in that: The battery shell (110) further includes a fixing plate (130), which is connected to the bottom of the shell (120) and is used to fix the first liquid outlet pipe (13), the first liquid inlet pipe (11), the second liquid inlet pipe (12), the second liquid outlet pipe (14), the liquid inlet chamber (20), and the liquid outlet chamber (30) to the second mounting cavity (122).

9. A battery pack, characterized in that: It comprises a battery module and a battery shell (110) according to any one of claims 6 to 8, wherein the battery module is arranged in the shell (120), and the liquid cooling component (100) is used to dissipate heat from the battery module.

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

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