Refrigerant pipe and battery pack

Abstract

The utility model provides a refrigerant pipe and a battery pack, the refrigerant pipe comprises a pipe body, a conveying channel used for conveying refrigerant is arranged in the pipe body, the side wall of the pipe body comprises at least one base wall and at least one protruding wall, the base wall and the protruding wall are connected along the circumferential direction of the pipe body, and the base wall and the protruding wall jointly define the conveying channel. The protruding wall protrudes towards the outer side of the conveying channel relative to the base wall. Or the side wall of the pipe body comprises at least one base wall and at least one concave wall, the base wall and the concave wall are connected in the circumferential direction of the pipe body, the base wall and the concave wall jointly define the conveying channel, and the concave wall is concave towards the inner side of the conveying channel relative to the base wall. According to the refrigerant pipe, the technical problem that an existing refrigerant pipe is low in heat dissipation efficiency can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation, in particular to a refrigerant tube and a battery pack. Background Art

[0002] A battery pack primarily consists of a housing and a battery module mounted within it. A battery module is composed of multiple cells. During operation, these cells generate significant heat, which in turn causes the battery pack to overheat. To prevent this, related technologies incorporate refrigerant pipes within the battery pack housing. These pipes carry a refrigerant, such as cold water or air, to remove heat from the battery pack and prevent thermal runaway. However, as the volume or density of the battery pack increases, the heat dissipation efficiency of existing refrigerant pipes decreases, failing to meet heat dissipation requirements. Utility Model Content

[0003] The embodiments of the present utility model provide a refrigerant tube and a battery pack, which can improve the technical problem of low heat dissipation efficiency of existing refrigerant tubes.

[0004] In a first aspect, an embodiment of the present invention provides a refrigerant tube, the refrigerant tube comprising a tube body, a delivery channel for delivering refrigerant being provided in the tube body, and the side wall of the tube body comprising at least one base wall and at least one raised wall, the base wall and the raised wall being connected along the circumferential direction of the tube body, and the base wall and the raised wall jointly enclosing the delivery channel, the raised wall being protruded toward the outside of the delivery channel relative to the base wall. Alternatively, the side wall of the tube body comprises at least one base wall and at least one recessed wall, the base wall and the recessed wall being connected along the circumferential direction of the tube body, and the base wall and the recessed wall jointly enclosing the delivery channel, the recessed wall being recessed toward the inside of the delivery channel relative to the base wall.

[0005] In one embodiment, the side wall of the tube body includes at least one base wall and at least one raised wall, the base wall has a relative base inner wall surface and a base outer wall surface, and the raised wall has a relative raised inner wall surface and a raised outer wall surface; the raised inner wall surface is connected to the base inner wall surface, and the raised inner wall surface is recessed relative to the base inner wall surface toward the outside of the conveying channel; the raised outer wall surface is connected to the base outer wall surface, and the raised outer wall surface is protruding relative to the base outer wall surface toward the outside of the conveying channel.

[0006] In one embodiment, the raised wall includes a first inclined wall and a second inclined wall connected at an angle, one end of the first inclined wall is connected to the second inclined wall, and the other end is connected to the base wall, and the other end of the second inclined wall is connected to the other end of the base wall or another base wall.

[0007] In one embodiment, the angle between the first inclined wall and the second inclined wall is an acute angle.

[0008] In one embodiment, a plurality of the raised walls are provided, and the plurality of raised walls are spaced apart along the circumferential direction of the tube body, and one base wall is connected between two adjacent raised walls.

[0009] In one embodiment, a cross section of the raised wall extends in an arc shape.

[0010] In one embodiment, the side wall of the tube body includes a plurality of base walls and a plurality of protruding walls, and the plurality of protruding walls are evenly spaced along the circumferential direction of the tube body.

[0011] In one embodiment, the tube body extends in a bent shape and includes a cooling section and a connecting section. There are at least two cooling sections, and at least two cooling sections are spaced parallel to each other. The connecting section is connected between two adjacent cooling sections.

[0012] In one embodiment, the interval between two adjacent cooling sections is greater than or equal to 40 mm and less than or equal to 200 mm.

[0013] In a second aspect, an embodiment of the present invention provides a battery pack, comprising a case, a battery module and the refrigerant tube described in any one of the above embodiments, wherein an installation cavity is provided in the case, the battery module is installed in the installation cavity, and the refrigerant tube is installed in the installation cavity.

[0014] In one embodiment, the refrigerant tube extends to the upper side of the battery module, and the battery pack further includes a support member fixed in the installation cavity, and the refrigerant tube is supported on the support member.

[0015] In one embodiment, the side wall of the tube body includes a plurality of base walls and a plurality of raised walls, and the support member is provided with a slot, wherein one of the raised walls is engaged in the slot, or the support member is engaged between two adjacent raised walls.

[0016] Beneficial effects of the embodiments of the present utility model:

[0017] In an embodiment of the present invention, the side wall of the refrigerant tube includes at least one base wall and at least one raised wall, the base wall and the raised wall are connected to each other along the circumferential direction of the tube body, and together enclose a delivery channel for conveying the refrigerant, and the raised wall protrudes outward from the base wall toward the delivery channel. Alternatively, the side wall of the tube body includes at least one base wall and at least one recessed wall, the base wall and the recessed wall are connected to each other along the circumferential direction of the tube body, and together enclose a delivery channel, and the recessed wall is recessed inward from the base wall toward the delivery channel.

[0018] It can be understood that the above settings can increase the heat exchange area between the refrigerant pipe and the surrounding air, so that the refrigerant pipe can absorb and take away more heat in the same time, thereby improving the heat dissipation efficiency of the refrigerant pipe and effectively improving the technical problem of low heat dissipation efficiency of the existing refrigerant pipe.

[0019] On the other hand, the battery pack provided in the present application is designed based on the above-mentioned refrigerant tube. Its beneficial effects can be found in the beneficial effects of the above-mentioned refrigerant tube, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a three-dimensional schematic diagram of a refrigerant pipe provided in an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 Side view of the refrigerant pipe;

[0023] Figure 3 This is a three-dimensional schematic diagram of a refrigerant pipe provided by another embodiment of the present invention;

[0024] Figure 4 This is a three-dimensional schematic diagram of a refrigerant pipe provided in another embodiment of the present utility model;

[0025] Figure 5 This is a three-dimensional schematic diagram of a refrigerant pipe provided in yet another embodiment of the present utility model;

[0026] Figure 6 is a structural cross-sectional view of a battery pack provided by an embodiment of the present utility model;

[0027] Figure 7 This is an exploded view of the structure of the battery pack provided by an embodiment of the present utility model;

[0028] Figure 8 This is a partial structural cross-sectional view of a battery pack provided by an embodiment of the present utility model;

[0029] Figure 9 It is a partial structural cross-sectional view of a battery pack provided in another embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in 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. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0031] First, you can Figure 6 and Figure 7 For reference, an existing battery pack 500 primarily comprises a housing 200 and a battery module 300 mounted within the housing 200. The battery module 300 is assembled from multiple battery cells 310. During operation, the battery cells 310 release a significant amount of heat, which in turn causes the battery pack 500 to heat up. To prevent excessive temperatures, related art techniques employ a refrigerant tube 100 installed within the housing 200 of the battery pack 500. This tube carries a refrigerant, such as cold water or air, which removes heat from the battery pack 500 and prevents thermal runaway. However, as the volume or density of the battery pack 500 increases, the heat dissipation efficiency of the existing refrigerant tube 100 decreases, failing to meet heat dissipation requirements.

[0032] In order to solve the above technical problems, the present application proposes a refrigerant pipe 100, which is used in a battery pack 500 and can also be used in other devices that require heat dissipation, such as Figure 1 and Figure 2 As shown, in the present application, the refrigerant tube 100 includes a tube body 10, in which a delivery channel 11 for delivering the refrigerant is provided, and the side wall of the tube body 10 includes at least one base wall 12 and at least one raised wall 13, the base wall 12 and the raised wall 13 are connected along the circumferential direction of the tube body 10, and the base wall 12 and the raised wall 13 jointly enclose the delivery channel 11, and the raised wall 13 protrudes toward the outside of the delivery channel 11 relative to the base wall 12.

[0033] Specifically, the tube body 10 can extend in a straight line or in a curved shape, for example, Figure 6 As shown, the refrigerant pipe 100 is arranged above the battery module 300. The battery module 300 is composed of a plurality of battery cells 310. In order to allow the refrigerant pipe 100 to pass over each battery cell 310, as shown in FIG. Figure 7As shown, the tube body 10 extends in a plurality of continuous S-bends. Alternatively, in other embodiments, a plurality of refrigerant tubes 100 may be provided, and the tube body 10 of each refrigerant tube 100 extends in a straight line, and the plurality of refrigerant tubes 100 are arranged side by side in the box 200 of the battery pack 500.

[0034] The pipe body 10 is provided with a delivery channel 11 for delivering a refrigerant. The delivered refrigerant may be cold water or cold air. In order to allow the refrigerant to flow into and out of the delivery channel 11, Figure 1 or Figure 3 As shown, the tube body 10 can be provided with an input port 111 and an output port 112 at both ends of its extension direction, the input port 111 being connected to a device that provides refrigerant, such as a cold water tank filled with cold water, and the output port 112 being connected to a device that collects refrigerant, such as a return water tank. Of course, in order to achieve the recycling of the refrigerant, the refrigerant can be made to flow out of the delivery channel 11, pass through a heat dissipation device (such as a heat dissipation fan), and then flow back to the device that provides the refrigerant.

[0035] The connection method between the refrigerant pipe 100 and the external device can be flexibly selected according to needs. For example, in one embodiment, reference can be made to Figure 7 The refrigerant tube 100 is used to be installed in the box 200 of the battery pack 500. The box 200 is provided with an input through-hole 231 and an output through-hole 232. One end of the refrigerant passes through the input through-hole 231, and the other end passes through the output through-hole 232. The refrigerant tube 100 is connected to the refrigerant tubes 100 in other battery packs 500. In this way, the refrigerant can flow through multiple battery packs 500, thereby dissipating heat for multiple battery packs 500.

[0036] The key point in this application is Figure 2 As shown, the side wall of the tube body 10 includes at least one base wall 12 and at least one raised wall 13. The base wall 12 and the raised wall 13 are connected to each other along the circumferential direction of the tube body 10, thereby jointly enclosing a conveying channel 11, wherein the raised wall 13 protrudes toward the outside of the conveying channel 11 relative to the base wall 12.

[0037] Specifically, the base wall 12 and the raised wall 13 together enclose the delivery channel 11. The side of the base wall 12 facing the delivery channel 11 is the inner side of the delivery channel 11, and the side of the base wall 12 facing away from the delivery channel 11 is the outer side of the delivery channel 11. In this embodiment, the raised wall 13 protrudes outward from the base wall 12 toward the outer side of the delivery channel 11. This increases the surface area of ​​the refrigerant tube 100, that is, increases the heat exchange area between the refrigerant tube 100 and the surrounding air, allowing the refrigerant tube 100 to absorb and remove more heat in the same amount of time, thereby improving the heat dissipation efficiency of the refrigerant tube 100 and effectively improving the technical problem of low heat dissipation efficiency of the existing refrigerant tube 100.

[0038] Alternatively, in another embodiment, the side wall of the tube body 10 includes at least one base wall 12 and at least one recessed wall (not shown), the base wall 12 and the recessed wall are connected along the circumferential direction of the tube body 10, and the base wall 12 and the recessed wall together enclose a delivery channel 11, and the recessed wall is recessed toward the inside of the delivery channel 11 relative to the base wall 12. It can be understood that this can also increase the surface area of ​​the refrigerant tube 100, that is, increase the heat exchange area between the refrigerant tube 100 and the surrounding air, so that the refrigerant tube 100 can absorb and take away more heat in the same time, thereby improving the heat dissipation efficiency of the refrigerant tube 100, and effectively improving the technical problem of low heat dissipation efficiency of the existing refrigerant tube 100.

[0039] The following description will be made by taking “the side wall of the tube body 10 includes at least one base wall 12 and at least one protruding wall 13 ” as an example.

[0040] First of all, it should be noted that the base wall 12 and the raised wall 13 can be respectively provided with one or more. For example, in one embodiment, the base wall 12 and the raised wall 13 are respectively provided with one, and the base wall 12 extends in a non-closed arc shape along the circumferential direction of the tube body 10. One end of the raised wall 13 is connected to one end of the base wall 12 in the extension direction, and the other end is connected to the other end of the base wall 12 in the extension direction, and the raised wall 13 protrudes toward the outside of the conveying channel 11 relative to the base wall 12.

[0041] For example, in Figure 2 In the illustrated embodiment, a plurality of base walls 12 and a plurality of raised walls 13 are provided, and the plurality of base walls 12 and the plurality of raised walls 13 are alternately connected, that is, in the circumferential direction of the tube body 10, a base wall 12 is connected between two adjacent raised walls 13, and a raised wall 13 is connected between two adjacent base walls 12. The plurality of base walls 12 and the plurality of raised walls 13 together enclose the conveying channel 11, and the raised walls 13 protrude toward the outside of the conveying channel 11 relative to the base walls 12.

[0042] In addition, it should be noted that the shape, height, width, etc. of the raised wall 13 can be flexibly selected as needed. For example, Figure 2 In the structural scheme shown, the cross-sectional shape of the raised wall 13 is a pointed angle. Of course, in other embodiments, the cross-sectional shape of the raised wall 13 may also be an arc (such as a semicircle or a semi-ellipse), a trapezoid, a square, etc.

[0043] Optionally, in one embodiment, the inner circumferential wall of the tube body 10 is a regular cylindrical shape, that is, the cross-section of the inner circumferential wall of the tube body 10 is a complete circle. In this case, the interior of the raised wall 13 is a solid structure, which makes the structure of the tube body 10 relatively simple and easy to produce.

[0044] Optionally, in another embodiment, as Figure 2 As shown, the base wall 12 has a base inner wall surface 121 and a base outer wall surface 122 opposite to each other along the radial direction of the tube body 10, and the raised wall 13 has a raised inner wall surface 131 and a raised outer wall surface 132 opposite to each other along the radial direction of the tube body 10; the raised inner wall surface 131 is connected to the base inner wall surface 121, and the raised inner wall surface 131 is recessed toward the outside of the conveying channel 11 relative to the base inner wall surface 121; the raised outer wall surface 132 is connected to the base outer wall surface 122, and the raised outer wall surface 132 is protruding toward the outside of the conveying channel 11 relative to the base outer wall surface 122.

[0045] Specifically, in this embodiment, the base inner wall surface 121 of the base wall 12 is closer to the conveying channel 11 than the base outer wall surface 122, and the raised inner wall surface 131 of the raised wall 13 is closer to the conveying channel 11 than the raised outer wall surface 132. The base inner wall surface 121 and the raised inner wall surface 131 are connected to each other, and the base inner wall surface 121 and the raised inner wall surface 131 together constitute the inner circumferential wall of the tube body 10. The base outer wall surface 122 and the raised outer wall surface 132 are connected to each other, and the base outer wall surface 122 and the raised outer wall surface 132 together constitute the outer circumferential surface of the tube body 10.

[0046] Because the raised wall 13 protrudes outward from the delivery channel 11 relative to the base wall 12, the raised outer wall surface 132 protrudes outward from the delivery channel 11 relative to the base outer wall surface 122. Crucially, in this embodiment, the raised inner wall surface 131 is recessed outward from the delivery channel 11 relative to the base inner wall surface 121. The interior of the raised wall 13 is hollow. This increases the volume of the delivery channel 11, allowing it to transport more refrigerant. This, in turn, allows the refrigerant tube 100 to absorb more heat per unit time and transfer the heat out of the battery pack 500, thereby improving the heat dissipation efficiency of the refrigerant tube 100.

[0047] That is to say, the refrigerant tube 100 in this embodiment increases the heat exchange area by having the raised wall 13 protrude toward the outside of the delivery tube channel relative to the base wall 12, and increases the refrigerant delivery volume by having the raised inner wall surface 131 recessed toward the outside of the delivery channel 11 relative to the base inner wall surface 121. This can greatly improve the heat dissipation efficiency of the refrigerant tube 100 and meet the heat dissipation requirements of the battery pack 500.

[0048] Optionally, in one embodiment, as Figure 2 As shown, the raised wall 13 includes a first inclined wall 133 and a second inclined wall 134 connected at an angle, one end of the first inclined wall 133 is connected to the second inclined wall 134, and the other end is connected to the base wall 12, and the other end of the second inclined wall 134 is connected to the other end of the base wall 12 or another base wall 12.

[0049] Specifically, in this embodiment, the raised wall 13 includes a first inclined wall 133 and a second inclined wall 134 connected at an angle, and the cross-section of the raised wall 13 is a pointed angle.

[0050] In which, when one protruding wall 13 and one base wall 12 are respectively provided, the base wall 12 extends in a non-closed arc shape along the circumferential direction of the tube body 10, one end of the first inclined wall 133 is connected to one end of the base wall 12 in the extension direction, and the other end is connected to one end of the second inclined wall 134, and the other end of the second inclined wall 134 is connected to the other end of the base wall 12 in the extension direction.

[0051] like Figure 2 As shown, when there are multiple protruding walls 13 and multiple base walls 12, the multiple protruding walls 13 and the multiple base walls 12 are alternately connected along the circumferential direction of the tube body 10. That is, one base wall 12 is connected between two adjacent protruding walls 13, and one protruding wall 13 is connected between two adjacent base walls 12. Each protruding wall 13 includes a first inclined wall 133 and a second inclined wall 134. One end of the first inclined wall 133 is connected to the adjacent base wall 12, and the other end is connected to one end of the second inclined wall 134. The other end of the second inclined wall 134 is connected to another adjacent base wall 12.

[0052] It can be understood that in this embodiment, the raised wall 13 includes a first inclined wall 133 and a second inclined wall 134 connected at an angle, so that the overall width of the raised wall 13 can be smaller, and the raised wall 13 is similar in shape to a "heat sink fin" with a refrigerant flowing inside. In this way, more raised walls 13 can be arranged outside the tube body 10, thereby increasing the heat exchange area and improving the heat dissipation efficiency.

[0053] It should be noted that the “whole width of the raised wall 13 ” mentioned above refers to the width of the raised wall 13 in the circumferential direction of the tube body 10 , which may be the maximum width or the average width.

[0054] Optionally, in one embodiment, as Figure 2 As shown, the angle between the first inclined wall 133 and the second inclined wall 134 is an acute angle, which can further make the overall width of the raised wall 13 smaller, and thus make the raised wall 13 more similar in shape to a "heat sink fin" with a refrigerant flowing inside. In this way, more raised walls 13 can be arranged outside the tube body 10, thereby increasing the heat exchange area and improving the heat dissipation efficiency.

[0055] Optionally, in one embodiment, as Figure 1 or Figure 2As shown, a plurality of raised walls 13 are provided, and the plurality of raised walls 13 are spaced apart along the circumferential direction of the tube body 10. A base wall 12 is connected between two adjacent raised walls 13, and the base wall 12 extends along the circumferential direction of the tube body 10. Alternatively, the base wall 12 may extend in a straight line between two adjacent raised walls 13. It will be appreciated that in this embodiment, by providing a plurality of raised walls 13, the heat exchange area between the refrigerant tube 100 and the surrounding air can be further increased, thereby allowing the refrigerant tube 100 to remove more heat within a unit, thereby improving the heat dissipation effect of the refrigerant tube 100.

[0056] Optionally, in one embodiment, the plurality of raised walls 13 are evenly spaced along the circumferential direction of the tube body 10. Specifically, as shown in FIG. Figure 2 As shown, there are eight protruding walls 13 and eight base walls 12 respectively, one base wall 12 is connected between two adjacent protruding walls 13, and one protruding wall 13 is connected between two adjacent base walls 12, and in the circumferential direction of the tube body 10, the interval angle between two adjacent protruding walls 13 is 45°.

[0057] It can be understood that this can make the heat dissipation efficiency of the refrigerant tube 100 at various positions in its circumferential direction more uniform, and thus can more evenly absorb and remove the heat in the battery pack 500, which is conducive to making the temperature at various positions in the battery pack 500 more uniform.

[0058] Optionally, in one embodiment, as Figure 3 、 Figure 4 or Figure 5 As shown, the tube body 10 extends in a bent shape and includes a cooling section 14 and a connecting section 15 . There are at least two cooling sections 14 , and at least two cooling sections 14 are parallel and spaced apart. A connecting section 15 is connected between two adjacent cooling sections 14 .

[0059] Specifically, in Figure 5 In the structural scheme shown, the tube body 10 as a whole extends continuously in the form of multiple S-bends, and the tube body 10 includes multiple cooling sections 14 and multiple connecting sections 15. The multiple cooling sections 14 are spaced in parallel, and adjacent two cooling sections 14 are connected by the connecting section 15 so that the refrigerant can flow between the multiple cooling sections 14.

[0060] Of course, in other embodiments, such as Figure 3 As shown, there may be only two cooling sections 14 , which are spaced apart in parallel and connected via a connecting section 15 , which is located at the ends of the two cooling sections 14 . In this case, the tube body 10 extends in a U shape.

[0061] It can be understood that because the multiple point battery cells 310 in the battery pack 500 are usually arranged in multiple rows and columns, this embodiment enables the tube body 10 to include multiple cooling sections 14, and the multiple cooling sections 14 are spaced in parallel. In this way, when the refrigerant tube 100 is installed, each cooling section 14 corresponds to a row or a column of battery cells 310. In this way, the refrigerant tube 100 can pass through each battery cell 310 to ensure that the heat on each battery cell 310 can be taken away. It is also convenient to judge whether the installation of the refrigerant tube 100 is accurate by observing whether the cooling section 14 corresponds to a row or a column of battery cells 310.

[0062] It should be noted that the extension length of the cooling section 14 can be designed based on the length of a row or column of battery cells 310, as long as the cooling section 14 passes through one side of each battery cell 310 in the row or column of battery cells 310. In addition, the spacing between two adjacent cooling sections 14 can be flexibly set according to actual conditions. For example, in one embodiment, the spacing between two adjacent cooling sections 14 is greater than or equal to 40 mm and less than or equal to 200 mm, and can specifically be 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, 200 mm, etc.

[0063] It is understood that if the interval between two adjacent cooling segments 14 is less than 40 mm, the arrangement of the cooling segments 14 is relatively crowded, which is not conducive to each cooling segment 14 absorbing more heat, thereby resulting in low heat dissipation efficiency. If the interval between two adjacent cooling segments 14 is greater than 200 mm, the arrangement of the cooling segments 14 is too loose, and heat is not easily absorbed and removed at certain locations between the two adjacent cooling segments 14, thereby resulting in low heat dissipation efficiency.

[0064] Therefore, this embodiment makes the interval between two adjacent cooling segments 14 greater than or equal to 40 mm and less than or equal to, which can avoid the situation where the cooling segments 14 are arranged too crowded, which is not conducive to each cooling segment 14 absorbing more heat, and can also avoid the situation where heat is not easily absorbed and taken away at certain positions between two adjacent cooling segments 14, thereby ensuring heat dissipation efficiency.

[0065] It should be noted that when actually setting the spacing between two adjacent cooling sections 14, it can be determined based on the actual width of the battery cells 310. For example, when the width of the battery cells 310 is relatively small, one row of battery cells 310 can correspond to one cooling section 14. For another example, when the width of the battery cells 310 is relatively large, one row of battery cells 310 can also correspond to multiple cooling sections 14 at the same time.

[0066] Second, as Figure 6 and Figure 7 As shown, an embodiment of the present invention provides a battery pack 500, which includes a box body 200, a battery module 300 and a refrigerant tube 100 of any of the above embodiments. An installation cavity 210 is provided in the box body 200, the battery module 300 is installed in the installation cavity 210, and the refrigerant tube 100 is installed in the installation cavity 210.

[0067] Specifically, in this embodiment, please refer to Figure 7 The box body 200 includes a bottom plate 220 and a box cover 230. The lower end of the box cover 230 is open and fixed to the bottom plate 220. The box cover 230 and the bottom plate 220 together enclose a mounting cavity 210. The battery module 300 is fixed to the bottom plate 220 and is located in the mounting cavity 210. The battery module 300 is composed of a plurality of battery cells 310. The specific structure of the refrigerant pipe 100 refers to the description in any of the above embodiments. The refrigerant pipe 100 is installed in the mounting cavity 210 and is located on at least one side of the battery module 300, which can be at least one of the upper side, lower side, left side, right side, front side, and rear side.

[0068] It should be noted that in order to allow the refrigerant to flow into and out of the box 200, Figure 7 As shown, an input through-hole 231 and an output through-hole 232 are provided on the box cover 230. One end of the refrigerant pipe 100 passes through the input through-hole 231 to extend outside the box body 200 and connect with a device storing refrigerant, and the other end of the refrigerant pipe 100 passes through the output through-hole 232 to extend outside the box body 200 and connect with a device for recycling refrigerant.

[0069] It can be understood that since the battery pack 500 of the present application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0070] Optionally, in one embodiment, as Figure 6 As shown, space is reserved on the upper side of the battery module 300 for installing the refrigerant tube 100. The refrigerant tube 100 extends to the upper side of the battery module 300. In order to fix the refrigerant tube 100 on the upper side of the battery module 300, the battery pack 500 also includes a support member 400. The support member 400 is fixed in the installation cavity 210, and the refrigerant tube 100 is supported on the support member 400.

[0071] Specifically, in this embodiment, the support member 400 can be in the shape of a plate, a block, a strip, etc. The support member 400 can be fixed in the installation cavity 210 by means of snap connection, thread connection, screw connection, welding, bonding, etc., and the support member 400 can be supported on both sides of the length direction or width direction of the refrigerant tube 100. In this way, it can not only support the refrigerant tube 100, but also avoid the support member 400 blocking the refrigerant and the battery module 300, thereby affecting the heat dissipation efficiency.

[0072] It should be noted that the support member 400 and the refrigerant pipe 100 can be connected in various ways, such as by bonding, welding, clamping, etc.

[0073] For example, optionally, in one embodiment, Figure 8 As shown, there are multiple raised walls 13, and a slot 410 is provided on the support member 400, in which one of the raised walls 13 is engaged in the slot 410; or, as shown in FIG. Figure 9 As shown, a plurality of raised walls 13 are provided, and the support member 400 is clamped between two adjacent raised walls 13 .

[0074] Specifically, when the support member 400 is provided with a slot 410, as shown in FIG. Figure 7 As shown, two support members 400 may be provided, and the two support members 400 are respectively located on both sides of the length direction of the refrigerant pipe 100, as shown in FIG. Figure 8 As shown, the raised wall 13 on the refrigerant pipe 100 corresponding to the slot 410 is engaged in the slot 410 , thereby supporting the refrigerant pipe 100 .

[0075] Alternatively, in other embodiments, two support members 400 are provided, and the two support members 400 are respectively located on both sides of the length direction of the refrigerant pipe 100, such as Figure 9 As shown, each support member 400 is correspondingly clamped between two adjacent raised walls 13 , which can also support the refrigerant pipe 100 .

[0076] It can be understood that this embodiment supports the refrigerant tube 100 by means of the clamping connection between the raised wall 13 and the support member 400, so there is no need to set up other additional fixing structures on the refrigerant tube 100, making the overall structure of the refrigerant tube 100 and the battery pack 500 simpler and easier to produce.

[0077] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, based on the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A refrigerant pipe, characterized in that: include: A tube body, wherein a delivery channel for delivering refrigerant is provided in the tube body, and the side wall of the tube body includes at least one base wall and at least one raised wall, the base wall and the raised wall are connected along the circumferential direction of the tube body, and the base wall and the raised wall jointly enclose the delivery channel, and the raised wall protrudes outward from the base wall toward the outside of the delivery channel; Alternatively, the side wall of the tube body includes at least one base wall and at least one recessed wall, the base wall and the recessed wall are connected along the circumferential direction of the tube body, and the base wall and the recessed wall jointly enclose the conveying channel, and the recessed wall is recessed toward the inner side of the conveying channel relative to the base wall.

2. The refrigerant pipe according to claim 1, characterized in that The side wall of the tube body includes at least one base wall and at least one convex wall, the base wall has an opposite base inner wall surface and a base outer wall surface, and the convex wall has an opposite convex inner wall surface and a convex outer wall surface; The raised inner wall surface is connected to the base inner wall surface, and is recessed relative to the base inner wall surface toward the outside of the conveying channel; the raised outer wall surface is connected to the base outer wall surface, and is protruding relative to the base outer wall surface toward the outside of the conveying channel.

3. The refrigerant pipe according to claim 2, characterized in that: The raised wall includes a first inclined wall and a second inclined wall connected at an angle, one end of the first inclined wall is connected to the second inclined wall, and the other end is connected to the base wall, and the other end of the second inclined wall is connected to the other end of the base wall or another base wall.

4. The refrigerant pipe according to claim 3, characterized in that: An angle between the first inclined wall and the second inclined wall is an acute angle.

5. The refrigerant pipe according to claim 2, characterized in that: The cross section of the raised wall extends in an arc shape.

6. The refrigerant pipe according to any one of claims 1 to 5, characterized in that: The side wall of the tube body includes a plurality of base walls and a plurality of protruding walls. The plurality of protruding walls are arranged at intervals along the circumferential direction of the tube body, and one base wall is connected between two adjacent protruding walls.

7. The refrigerant pipe according to claim 6, characterized in that: The plurality of raised walls are evenly spaced apart along the circumferential direction of the tube body.

8. The refrigerant pipe according to any one of claims 1 to 5, characterized in that: The tube body extends in a bent shape and includes a cooling section and a connecting section. There are at least two cooling sections, and at least two cooling sections are parallel and spaced apart. The connecting section is connected between two adjacent cooling sections.

9. The refrigerant pipe according to claim 8, characterized in that The interval between two adjacent cooling sections is greater than or equal to 40 mm and less than or equal to 200 mm.

10. A battery pack, characterized in that: include: A box body, wherein a mounting cavity is provided in the box body; a battery module, the battery module being installed in the installation cavity; as well as, The refrigerant pipe according to any one of claims 1 to 9, wherein the refrigerant pipe is installed in the installation cavity.

11. The battery pack according to claim 10, characterized in that: The refrigerant tube extends to the upper side of the battery module. The battery pack further includes a support member fixed in the installation cavity, and the refrigerant tube is supported on the support member.

12. The battery pack according to claim 11, wherein: The side wall of the tube body includes a plurality of base walls and a plurality of protruding walls. The support member is provided with a slot, wherein one of the protruding walls is engaged in the slot, or the support member is engaged between two adjacent protruding walls.

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