Immersed cooling device and battery pack

Abstract

The utility model provides an immersed cooling device and a battery pack. An immersed pipeline comprises a cooling pipe and two supporting assemblies, the cooling pipe comprises two end parts oppositely arranged in the first direction and a body part located between the two end parts, an inlet is formed in one end part, and a plurality of outlets arranged at intervals are formed in the side wall of the body part; the two supporting assemblies are used for supporting the two end parts of the cooling pipe respectively; wherein the two supporting assemblies, the cooling pipe and the two battery modules located on the two opposite sides of the two supporting assemblies jointly define a cooling area, and the cooling area communicates with the multiple outlets. The utility model aims to solve the technical problems that the existing battery pack is poor in cooling efficiency, easy to cause thermal runaway and short in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to an immersion cooling device and a battery pack. Background Art

[0002] In the related art, a battery pack is provided with a plurality of parallel battery modules. Due to limitations such as space layout, the plurality of battery modules are closely arranged, and the heat dissipation conditions are poor. The temperature between two battery modules will gradually increase, resulting in heat accumulation in the battery pack and temperature rise, thereby affecting the performance and life of the battery pack and even causing thermal runaway. Utility Model Content

[0003] The embodiments of the utility model provide an immersion cooling device and a battery pack, aiming to solve the technical problems of poor cooling efficiency, easy thermal runaway and short service life of the existing battery pack.

[0004] In a first aspect, an embodiment of the utility model provides an immersion cooling device, comprising:

[0005] A cooling pipe, comprising two ends arranged opposite to each other in a first direction and a main body located between the two ends, wherein one of the ends is formed with an inlet, and a side wall of the main body is formed with a plurality of outlets arranged at intervals; and

[0006] Two support assemblies, respectively supporting the two ends of the cooling pipe;

[0007] The two support assemblies and the cooling pipe are used to enclose a cooling area together with two battery modules located on opposite sides of the two support assemblies, and the cooling area is connected to the plurality of outlets.

[0008] In one embodiment, each of the support assemblies includes a bracket plate and a sealing member, wherein the sealing member is installed on a side of the support assembly close to the cooling area, the bracket plate supports the corresponding end of the cooling tube, and the sealing member is used to install the corresponding battery module and to seal at least a portion of the cooling area.

[0009] In one embodiment, a plurality of limiting openings are formed on both sides of the blocking member, and the plurality of limiting openings are used to limit the protrusions of the battery module.

[0010] In one embodiment, the distance between every two adjacent limiting openings on the same side of the blocking member is different.

[0011] In one embodiment, a clamping groove is formed at one end of the bracket plate, and the clamping groove is used to clamp the cooling pipe;

[0012] A supporting groove is provided at one end of the blocking member close to the clamping groove, and the supporting groove is used to support the cooling pipe.

[0013] In one embodiment, each of the supporting components further includes a fixing component, and the fixing component includes a fixing plate and a limiting plate. The fixing plate is installed on the bracket plate and is arranged close to the snap-in groove. The limiting plate cooperates with the fixing plate to form a fixing hole, and the cooling pipe passes through and is fixed in the fixing hole.

[0014] In one embodiment, one end of the support plate away from the cooling pipe is bent in a direction away from the cooling area to form a supporting portion.

[0015] In one embodiment, a sealing member is further included, wherein the sealing member is wrapped around the outside of the main body to seal at least a portion of the cooling area; and / or,

[0016] The inner diameter of the main body is 10-15 mm, and the wall thickness of the main body is 1-1.25 mm.

[0017] In a second aspect, an embodiment of the present utility model provides a battery pack, comprising:

[0018] A box body is formed with a containing cavity;

[0019] A plurality of battery modules are arranged in the accommodating cavity at intervals;

[0020] A plurality of immersion cooling devices, each of which is disposed between two adjacent battery modules;

[0021] Wherein, the immersion cooling device includes a cooling pipe and two supporting assemblies, the cooling pipe includes two end portions arranged opposite to each other in a first direction and a main body portion located between the two end portions, one of the end portions is formed with an inlet, and the side wall of the main body portion is formed with a plurality of outlets arranged at intervals; the two supporting assemblies respectively support the two end portions of the cooling pipe; wherein the two supporting assemblies and the cooling pipe are used to enclose a cooling area together with two battery modules located on opposite sides of the two supporting assemblies, and the cooling area is connected to the plurality of outlets.

[0022] In one embodiment, the side walls of the two adjacent battery modules, the bottom of the box, the cooling pipe and the two support assemblies enclose the cooling area; and / or,

[0023] At least one water outlet is formed at a position on the bottom of the box body corresponding to the cooling pipe, and the water outlet is connected to the cooling area.

[0024] Beneficial effects of the embodiments of the utility model:

[0025] In the technical solution of the utility model, the immersion cooling device has a simple structure and can directly contact the sides of multiple battery modules in the battery pack for cooling, thereby avoiding excessive temperature between the battery modules, causing the battery pack temperature to rise and thermal runaway, thereby improving the service life and safety of the battery pack; specifically, the two support assemblies and the cooling tube are used to form a cooling area together with the two battery modules located on the opposite sides of the two support assemblies, and the cooling medium enters the cooling tube from the inlet and then flows into the cooling area from the outlet on the cooling tube. Since the side walls of two adjacent battery modules constitute the cooling area, the cooling medium flows between the two adjacent battery modules, directly contacts the battery modules, and directly cools the two battery modules, thereby ensuring the uniformity of the temperature of the entire battery pack and further improving the safety of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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.

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the immersion cooling device provided by the utility model;

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure of the cooling pipe (including sealing parts);

[0029] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle support assembly;

[0030] Figure 4 yes Figure 1 A is an enlarged schematic diagram;

[0031] Figure 5 yes Figure 2 A magnified schematic diagram of B.

[0032] Description of Figure Numbers

[0033]

[0034] DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, 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.

[0036] In the related art, a battery pack is provided with a plurality of parallel battery modules. Due to limitations such as space layout, the plurality of battery modules are closely arranged, and the heat dissipation conditions are poor. The temperature between two battery modules will gradually increase, resulting in heat accumulation in the battery pack and temperature rise, thereby affecting the performance and life of the battery pack and even causing thermal runaway.

[0037] In view of this, the utility model proposes an immersion cooling device. Figures 1 to 5 This is a structural schematic diagram of an embodiment of an immersion cooling device provided by the utility model. The immersion cooling device provided by the utility model has a simple structure, can directly cool the battery module, and has high cooling efficiency. The immersion cooling device will be described in detail below in conjunction with the main drawings.

[0038] See also Figure 1 , Figure 2 and Figure 5 The immersion cooling device 100 includes a cooling tube 101 and two supporting assemblies 107, wherein the cooling tube 101 includes two end portions 102 arranged opposite to each other in a first direction and a main body portion 104 located between the two end portions 102, wherein one of the end portions 102 is formed with an inlet 105, and the side wall of the main body portion 104 is formed with a plurality of outlets 106 arranged at intervals; the two supporting assemblies 107 respectively support the two end portions 102 of the cooling tube 101; wherein the two supporting assemblies 107 and the cooling tube 101 are used to enclose a cooling area 103 together with two battery modules located on opposite sides of the two supporting assemblies 107, and the cooling area 103 is connected to the plurality of outlets 106.

[0039] In the technical solution of the present utility model, the immersion cooling device 100 has a simple structure and can be in direct contact with multiple battery modules in a battery pack for cooling, thereby avoiding excessive temperature between the battery modules, causing the battery pack temperature to rise and thermal runaway to occur, thereby improving the service life and safety of the battery pack; specifically, the two support components 107 and the cooling tube 101 are used to form a cooling area 103 together with the two battery modules located on opposite sides of the two support components 107, and the cooling medium enters the cooling tube 101 from the inlet 105, and then flows into the cooling area 103 from the outlet 106 on the cooling tube 101. Since the side walls of two adjacent battery modules constitute the cooling area 103, the cooling medium flows between the two adjacent battery modules, directly contacts the battery modules, and directly cools the two battery modules, thereby ensuring the uniformity of the temperature of the entire battery pack and further improving the safety of the battery pack.

[0040] Specifically, the immersion cooling device 100 has a simple structure and does not have an additional cooling plate. In actual operation, the two battery modules are spaced apart to form a first space, and the immersion cooling pipe 101 is arranged in the first space. The two support assemblies 107 block the two ends of the first space, and the cooling pipe 101 blocks the top of the first space, thereby forming a cooling area 103. In the actual installation process, it is only necessary to fix the two support assemblies 107 first, and then fix the two ends 102 of the cooling pipe 101 on the two support assemblies 107 respectively. The installation steps are few, the structure is simple, and it has good installation advantages.

[0041] It should be noted that in order to ensure the sealing of the cooling area 103 and prevent the cooling medium in the cooling area 103 from leaking out, the support assembly 107 needs to ensure sealing while providing support. Figure 3The cooling area 103 has two first side surfaces arranged opposite to each other along a first direction, two second side surfaces arranged opposite to each other along a second direction, and two third side surfaces arranged opposite to each other along a third direction. Two adjacent battery modules constitute the two second side surfaces of the cooling area 103. In this embodiment, each of the support assemblies 107 includes a bracket plate 108 and a blocking member 109. The blocking member 109 is installed on a side of the support assembly 107 close to the cooling area 103. Two blocking members 109 constitute the two first side surfaces of the cooling area 103. More specifically, the blocking member 109 is used to install the corresponding battery module. The two blocking members 109 and the two battery modules block the two first side surfaces and the two second side surfaces of the cooling area 103. Since the blocking member 109 cooperates with the battery module, a portion of the cooling area 103 (i.e., the two first side surfaces and the two second side surfaces) is sealed. In this way, by utilizing the side surfaces of the battery module to constitute the two first side surfaces of the cooling area 103, there is no need to additionally set up a cooling plate or other structure, thereby reducing the weight and cost of the battery pack.

[0042] Furthermore, in some embodiments, the sealing member 109 is preferably foam. Foam itself has good sealing performance, light texture, good corrosion resistance, and low cost. Therefore, using foam as the sealing member 109 can not only ensure sealing performance, but also reduce costs.

[0043] Furthermore, the foam is relatively soft. After the cooling medium in the cooling area 103 exchanges heat, the temperature of the cooling medium will increase. When the temperature is too high, the foam will deform. In this embodiment, the bracket plate 108 supports the corresponding end 102 of the cooling tube 101. At the same time, the sealing member 109 is arranged on the side of the bracket plate 108 close to the cooling area 103, and the sealing member 109 is tightly abutted against the bracket plate 108. In this way, the bracket plate 108 can support the cooling tube 101 while also supporting the sealing member 109 to prevent the sealing member 109 from being deformed due to excessive temperature and detached from the battery module.

[0044] For further information, see Figure 1 and Figure 3 A plurality of limiting openings 110 are formed on both sides of the blocking member 109, and a plurality of protrusions corresponding to the limiting openings 110 are formed on the battery module. The plurality of limiting openings 110 cooperate with the plurality of protrusions to relatively fix the blocking member 109 and the battery module.

[0045] In order to prevent the operator from installing the blocking member 109 incorrectly, which would result in the cooling area 103 being unable to form a sealed space, in some embodiments, an anti-error mechanism is provided on the blocking member 109. Specifically, among the multiple limiting openings 110 on the same side of the blocking member 109, the distance between each two adjacent limiting openings 110 is different. For example, in one embodiment, six limiting openings 110 are provided on the blocking member 109, and the six limiting openings 110 are evenly distributed on both sides of the blocking member 109 (that is, three limiting openings 110 are provided on each side), and the three limiting openings 110 are respectively a first limiting opening, a second limiting opening, and a third limiting opening, and a distance from the first limiting opening to the second limiting opening is set to L1, and a distance from the second limiting opening to the third limiting opening is set to L2. By setting L1 and L2 different, an error-proofing function can be achieved. In another embodiment, six limiting openings 110 are provided on the blocking member 109, and three limiting openings 110 are provided on each side, and the limiting openings 110 on one side They are the first limit opening, the second limit opening and the third limit opening, respectively, and the limit opening 110 on the other side is the fourth limit opening, the fifth limit opening and the sixth limit opening, wherein the first limit opening corresponds to the fourth limit opening, the second limit opening corresponds to the fifth limit opening, the third limit opening corresponds to the sixth limit opening, the distance from the first limit opening to the second limit opening is L1, the distance from the second limit opening to the third limit opening is L2, the distance from the fourth limit opening to the fifth limit opening is L3, and the distance from the fifth limit opening to the sixth limit opening is L4, wherein the sizes of L1, L2, L3, and L4 are all different, thereby realizing the error prevention function.

[0046] In some other embodiments, see Figure 3 The blocking member 109 is provided with four limit openings 110, two limit openings 110 are provided on each side, and the distance from each limit opening 110 to the corresponding end 102 is different. In this way, the operator can only install it in the corresponding direction during installation, otherwise the limit opening 110 cannot cooperate with the protrusion, thereby realizing the error-proofing function.

[0047] See also Figure 3 A clamping groove 111 is formed at one end of the bracket plate 108, and the clamping groove 111 is used to clamp the cooling pipe 101; a support groove 112 is formed at one end of the blocking member 109 close to the clamping groove 111, and the support groove 112 is used to support the cooling pipe 101. The clamping groove 111 and the support groove 112 cooperate with each other, so that the end 102 of the cooling pipe 101 is pre-fixed on the support assembly 107.

[0048] See also Figure 1 , Figure 3 and Figure 4 The battery pack will shake during use. In order to prevent the cooling tube 101 from detaching, each of the support components 107 further includes a fixing component 113, and the fixing component 113 is used to fix the end 102 of the cooling tube 101. Specifically, in some embodiments, see Figure 4 The fixing assembly 113 includes a fixing plate 114 and a limiting plate 115. The fixing plate 114 is installed on the bracket plate 108 and is arranged close to the clamping groove 111. Specifically, the fixing plate 114 is arranged below the clamping groove 111. The fixing plate 114 is a flat plate, and the contact between the fixing plate 114 and the cooling tube 101 cannot fix the cooling tube 101. The fixing plate 114 is arranged below the clamping groove 111, so that the clamping groove 111 can play a fixing role and pre-fix the cooling tube 101. A groove is formed on the limiting plate 115, and the groove is arranged toward the fixing plate 114. The limiting plate 115 cooperates with the fixing plate 114 to enclose a fixing hole, and the cooling tube 101 passes through and is fixed in the fixing hole. More specifically, two first through holes are formed on the fixing plate 114, and two second through holes corresponding to the first through holes are formed on the limiting plate 115, and the two first through holes correspond to the two second through holes. The fixing assembly 113 also includes a first bolt and a nut, and the first bolt passes through the first through hole and the second through hole in turn and cooperates with the nut to fix the fixing plate 114 and the limiting plate 115, thereby fixing the end 102 of the cooling pipe 101 on the bracket plate 108.

[0049] See also Figure 3 In order to facilitate the fixation of the bracket plate 108, one end of the bracket plate 108 away from the cooling tube 101 is bent in a direction away from the cooling area 103 to form a support portion 116, and the support portion 116 is used to be fixed to the box body. More specifically, a third through hole is formed on the support portion 116, and the fixing component 113 includes a second bolt, and the second bolt is fixed to the box body of the battery pack through the third hole. In this way, the immersion cooling device 100 can be fixed to the battery pack.

[0050] Specifically, see Figure 1 and Figure 2The immersion cooling device 100 further includes a seal 117, which is wrapped around the outside of the main body 104 to seal at least a portion of the cooling area 103. In this embodiment, the seal 117 is used to block one of the two third side surfaces of the cooling area 103, and the other third side surface is blocked by the bottom of the battery pack box. In this way, the six sides of the cooling area 103 are all blocked, and the cooling area 103 forms a sealed space to prevent the cooling medium in the cooling area 103 from leaking out.

[0051] For further information, please refer to Figure 1 The immersion cooling device 100 also includes a pipe joint structure 118, which is connected to the inlet 105. The pipe joint structure 118 includes a connecting section, a body section and a threaded section arranged in sequence, the threaded section is connected to the inlet 105, and the connecting section is connected to the outside to guide the cooling medium into the cooling pipe 101; further, the connecting section, the body section and the threaded section are integrally formed, and the material of the pipe joint structure 118 is PA66.

[0052] In some embodiments, the inner diameter of the main body 104 is 10 to 15 mm, specifically, the inner diameter of the main body 104 can be 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm; the wall thickness of the main body 104 is 1 to 1.25 mm, specifically, the wall thickness of the main body 104 can be 1.00 The material of the cooling tube 101 is PA12, which has good thermal conductivity, light weight and low cost.

[0053] In some embodiments, the number of the inlets 105 is set to 1, and the number of the outlets 106 is set to 13. The arrangement of multiple outlets 106 can speed up the circulation of the cooling medium in the cooling area 103, accelerate the cooling rate, and avoid the situation where the local temperature of the battery module is too high. Furthermore, the flow rate of the cooling medium in the cooling tube 101 is 20L / min.

[0054] The present utility model also proposes a battery pack, which includes a box body, a plurality of battery modules and a plurality of immersion cooling devices 100, wherein the box body is formed with a receiving cavity; the plurality of battery modules are arranged in the receiving cavity at intervals, and each of the immersion cooling devices 100 is correspondingly arranged between two adjacent battery modules; the specific structure of the immersion cooling device 100 refers to the above-mentioned embodiment. Since the present battery pack adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0055] Furthermore, the side walls of the two adjacent battery modules, the bottom of the box, the cooling tube 101 and the two supporting assemblies 107 enclose the cooling area 103; the side walls of the two battery modules constitute the two second side surfaces of the cooling area 103, the bottom of the box and the cooling tube 101 constitute the two third side surfaces of the cooling area 103, and the two supporting assemblies 107 constitute the two second side surfaces of the cooling area 103.

[0056] Furthermore, at least one water outlet is formed at the bottom of the box body at a position corresponding to the cooling pipe 101, and the water outlet is connected to the cooling area 103. After the heat exchange of the cooling medium in the cooling area 103 is completed, it flows out of the cooling area 103 from the water outlet.

[0057] 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 technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An immersion cooling device, characterized in that: include: A cooling pipe, comprising two ends arranged opposite to each other in a first direction and a main body located between the two ends, wherein one of the ends is formed with an inlet, and a side wall of the main body is formed with a plurality of outlets arranged at intervals; and Two support assemblies, respectively supporting the two ends of the cooling pipe; The two support assemblies and the cooling pipe are used to enclose a cooling area together with two battery modules located on opposite sides of the two support assemblies, and the cooling area is connected to the plurality of outlets.

2. The immersion cooling device according to claim 1, characterized in that: Each of the support assemblies includes a bracket plate and a sealing member, wherein the sealing member is installed on one side of the support assembly close to the cooling area, the bracket plate supports the corresponding end of the cooling tube, and the sealing member is used to install the corresponding battery module and to seal at least a portion of the cooling area.

3. The immersion cooling device according to claim 2, characterized in that: A plurality of limiting openings are formed on both sides of the blocking member, and the plurality of limiting openings are used to limit the protrusions of the battery module.

4. The immersion cooling device according to claim 3, characterized in that: The distances between every two adjacent limiting openings on the same side of the blocking member are different.

5. The immersion cooling device according to any one of claims 2 to 4, characterized in that: A clamping groove is formed at one end of the bracket plate, and the clamping groove is used to clamp the cooling pipe; A supporting groove is provided at one end of the blocking member close to the clamping groove, and the supporting groove is used to support the cooling pipe.

6. The immersion cooling device according to claim 5, characterized in that: Each of the supporting components also includes a fixing component, which includes a fixing plate and a limiting plate. The fixing plate is installed on the bracket plate and is arranged close to the snap-in groove. The limiting plate cooperates with the fixing plate to form a fixing hole, and the cooling pipe passes through and is fixed in the fixing hole.

7. The immersion cooling device according to any one of claims 2 to 4, characterized in that: One end of the support plate away from the cooling pipe is bent in a direction away from the cooling area to form a supporting portion.

8. The immersion cooling device according to any one of claims 1 to 4, characterized in that: Also includes a seal, the seal wrapped around the outside of the body portion to seal at least a portion of the cooling area; and / or, The inner diameter of the main body is 10-15 mm, and the wall thickness of the main body is 1-1.25 mm.

9. A battery pack, characterized in that: include: A box body is formed with a containing cavity; A plurality of battery modules are arranged in the accommodating cavity at intervals; A plurality of immersion cooling devices, each of which is disposed between two adjacent battery modules; Wherein, the immersion cooling device is the immersion cooling device as described in any one of claims 1-8.

10. The battery pack according to claim 9, characterized in that: The side walls of the two adjacent battery modules, the bottom of the box, the cooling pipe and the two support assemblies enclose the cooling area; and / or, At least one water outlet is formed at a position on the bottom of the box body corresponding to the cooling pipe, and the water outlet is connected to the cooling area.

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