Air duct heat dissipation device and battery module

Abstract

The utility model provides an air duct heat dissipation device and a battery module, and particularly relates to the technical field of batteries. The air duct heat dissipation device comprises a main body part and an insulating layer. Wherein the main body part is provided with a plurality of through parts in the first direction, and the through parts are arranged at intervals in the second direction, so that a plurality of heat dissipation air channels are formed. The insulating layer wraps the outer surface of the main body part, and the insulating layer is arranged on the main body part in a protruding mode in the first direction. The distance range of the insulating layer protruding from the main body part is 0-1 mm. Therefore, the insulating layer covers the outer surface of the main body part of the air duct heat dissipation device, so that the air duct heat dissipation device can be conveniently matched with the battery cell unit. And under the condition that the air circulation of the main body part is not influenced, good insulation protection performance can be realized.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a heat dissipation device and a battery module. Background Technology

[0002] With technological advancements and increasing demand for renewable energy, battery modules are widely used in various fields, including electric vehicles, renewable energy storage, consumer electronics, and industrial equipment. As power density continues to increase, thermal management becomes a critical issue. Overheating can lead to performance degradation, reduced reliability, and even damage to battery modules.

[0003] To meet the heat dissipation requirements of battery modules, air cooling is typically used. Among these methods, airflow cooling devices are a common thermal management approach. By using designated airflow channels, heat is effectively removed from the heat source to maintain the normal operation of the battery module and extend its lifespan.

[0004] However, in existing airflow cooling devices, since airflow cooling relies on the thermal conductivity of air, and air has a low thermal conductivity, airflow cooling may not provide sufficient cooling effect in high power density battery modules, and the heat dissipation efficiency needs to be improved. Utility Model Content

[0005] This application provides a duct cooling device and a battery module. An insulating layer is applied to the outer surface of the main body of the duct cooling device to facilitate its integration with the battery cell unit. It also provides good insulation and protection without affecting airflow through the main body.

[0006] The first aspect of this application provides a duct cooling device, comprising:

[0007] The main body has several through-sections in the first direction, and the through-sections are spaced apart in the second direction to form several heat dissipation ducts.

[0008] An insulating layer is provided, which covers the outer surface of the main body and protrudes from the main body in a first direction.

[0009] The insulating layer protrudes from the main body at a distance ranging from 0 to 1 mm.

[0010] The first aspect of this application provides a heat dissipation device for air ducts, comprising a main body and an insulating layer. The main body has a plurality of through-holes in a first direction, and these through-holes are spaced apart in a second direction to form a plurality of heat dissipation ducts. The insulating layer covers the outer surface of the main body and protrudes from the main body in the first direction. The distance by which the insulating layer protrudes from the main body ranges from 0 to 1 mm. This insulating layer on the outer surface of the main body of the heat dissipation device facilitates its integration with the battery cell unit. It also provides good insulation and protection performance without affecting airflow through the main body.

[0011] In one possible implementation, the main body has a top surface, a bottom surface, two first side surfaces, and two second side surfaces, with the top surface and bottom surface, the two first side surfaces, and the two second side surfaces all arranged opposite to each other.

[0012] An insulating layer covers the top surface, bottom surface, and two first side surfaces;

[0013] The through section is located on the second side.

[0014] In one possible implementation, the insulating layer is positioned to protrude toward the second side.

[0015] In one possible implementation, the insulating layer is a blue film.

[0016] In one possible implementation, the thickness of the insulating layer is less than or equal to 0.11 mm.

[0017] In one possible implementation, the main body is made of aluminum.

[0018] In one possible implementation, the tensile strength of the main body is greater than or equal to 150 MPa, and the yield stress limit of the main body is greater than or equal to 115 MPa.

[0019] In one possible implementation, the inner wall of the main body with the through portion has a serrated structure.

[0020] A second aspect of this application provides a battery module, comprising:

[0021] Several stacked battery cell units;

[0022] Several of the above-mentioned air duct heat dissipation devices are provided, each air duct heat dissipation device is located between every two battery cells, and the insulation layer of the air duct heat dissipation device is arranged facing the battery cell.

[0023] The battery module provided in the second aspect of this application includes a plurality of stacked battery cells and a plurality of airflow cooling devices. Each airflow cooling device is located between every two battery cells, with the insulating layer of the airflow cooling device facing the battery cell. In this way, by combining the airflow cooling devices and the battery cells, the plurality of airflow cooling devices are evenly inserted between the plurality of stacked battery cells, facilitating airflow through the airflow cooling devices to dissipate heat from the battery cells and improve the overall heat dissipation efficiency of the battery module.

[0024] In one possible implementation, the air duct heat dissipation device and the battery cell unit are fixedly connected by an adhesive.

[0025] It should be understood that the second aspect of this application corresponds to the technical solution of the first aspect of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here.

[0026] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the air duct heat dissipation device and battery module provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only a part of the embodiments of this application. These drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the air duct heat dissipation device provided in the embodiments of this application;

[0029] Figure 2 This is a partially enlarged schematic diagram of the air duct heat dissipation device provided in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the battery module provided in an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100 - Airflow cooling device;

[0033] 200 - Main body; 210 - Through section; 220 - Top surface; 230 - Bottom surface; 240 - First side surface; 250 - Second side surface; 260 - Serrated edge;

[0034] 300 - Insulation layer;

[0035] 400-Battery Module;

[0036] 500-cell unit. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] As described in the background section, in existing air duct cooling devices, since air duct cooling relies on the thermal conductivity of air, and air has a low thermal conductivity, air duct cooling may not provide sufficient cooling effect in high power density battery modules, and the heat dissipation efficiency needs to be improved.

[0039] To address the aforementioned technical problems, the first aspect of this application provides a duct cooling device. This duct cooling device includes a main body and an insulating layer. The main body has a plurality of through-holes in a first direction, and these through-holes are spaced apart in a second direction to form a plurality of cooling ducts. The insulating layer covers the outer surface of the main body and protrudes from the main body in the first direction. The distance by which the insulating layer protrudes from the main body ranges from 0 to 1 mm. Thus, covering the outer surface of the main body of the duct cooling device with an insulating layer facilitates its compatibility with the battery cell unit. It also provides good insulation protection without affecting the airflow through the main body.

[0040] A second aspect of this application provides a battery module. The battery module includes a plurality of stacked battery cells and a plurality of airflow cooling devices. Each airflow cooling device is located between every two battery cells, with its insulating layer facing the battery cell. This combination of airflow cooling devices and battery cells allows the multiple airflow cooling devices to be evenly inserted between the stacked battery cells, facilitating airflow through the airflow cooling devices to dissipate heat from the battery cells and improving the overall heat dissipation efficiency of the battery module.

[0041] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] This application provides a duct cooling device and a battery module. An insulating layer is applied to the outer surface of the main body of the duct cooling device to facilitate its integration with the battery cell unit. This provides good insulation and protection without affecting airflow through the main body. By combining the duct cooling device and the battery cell unit, several duct cooling devices are evenly inserted between several stacked battery cell units, facilitating airflow through the duct cooling devices to dissipate heat from the battery cell units and improve the overall heat dissipation efficiency of the battery module. The specific structure of the duct cooling device and battery module provided in this application will be described below with reference to the accompanying drawings.

[0043] refer to Figure 1 In a first aspect, this application provides a duct cooling device 100. It is understood that, in conjunction with... Figure 3 As can be seen, the airflow heat dissipation device 100 can be applied to the battery module 400. The airflow heat dissipation device 100 may include a main body 200 and an insulating layer 300. In one possible implementation, such as... Figure 1 As shown, the main body 200 can be a rectangular structure, and the shape of the main body 200 is not limited in this embodiment. In this embodiment, the main body 200 may have a through portion 210 in the first direction. In one possible implementation, the number of through portions 210 can be several, and the number of through portions 210 is not limited in this embodiment. Several through portions 210 can be spaced apart in the second direction, thereby forming several heat dissipation ducts in the air duct heat dissipation device 100. In this way, by opening several through portions 210 in the main body 200, air can circulate in the main body 200, thereby allowing the air duct heat dissipation device 100 to remove heat from the battery module 400 through air convection, thereby improving heat dissipation efficiency.

[0044] It should be noted that, for ease of description, in the embodiments of this application, the first direction can be the length direction of the main body 200, that is... Figure 1 The x-direction. The second direction can be the width direction of the main body 200, i.e. Figure 1 The y-direction. The third direction can be the thickness direction of the main body 200, i.e. Figure 1 The z-direction in the equation.

[0045] Continue to refer to Figure 1 Based on the above embodiments, the insulating layer 300 can cover the outer surface of the main body portion 200. In one possible implementation, the insulating layer 300 can protrude from the main body portion 200 in a first direction. For example, as... Figure 2 As shown, the insulating layer 300 protrudes from the main body 200 by a distance ranging from 0 to 1 mm. This provides good insulation and protection by covering the outer surface of the main body 200 with an insulating layer 300, facilitating its integration with the battery cell unit 500 in the battery module 400. It is understood that if the insulating layer 300 protrudes too shortly from the main body 200 in the first direction, burrs may be present on the outer edge of the main body 200 due to manufacturing processes, potentially puncturing the battery cell unit 500. If the insulating layer 300 protrudes too far from the main body 200 in the first direction, its flexibility may obstruct part of the heat dissipation duct, thus affecting airflow. Therefore, in this embodiment, the distance the insulating layer 300 protrudes from the main body 200 is set to 0-1 mm.

[0046] Continue to refer to Figure 1 Based on the above embodiments, the main body 200 may have a top surface 220, a bottom surface 230, two first side surfaces 240, and two second side surfaces 250. The top surface 220 and bottom surface 230 are arranged opposite each other, the two first side surfaces 240 are arranged opposite each other, and the two second side surfaces 250 are also arranged opposite each other, thus forming a rectangular structure. In one possible implementation, an insulating layer 300 may cover the top surface 220, bottom surface 230, and two first side surfaces 240, such that the insulating layer 300 is located between the main body 200 and the battery cell unit 500, providing good insulation and protection. The through-hole 210 may be formed on the second side surface 250, thereby connecting the two second side surfaces 250 of the main body 200 through the through-hole 210, facilitating air convection and improving heat dissipation efficiency.

[0047] Continue to refer to Figure 2 Based on the above embodiments, the insulating layer 300 may protrude towards the second side 250. In this embodiment, the insulating layer 300 may be attached to the first side 240 and further extend towards the second side 250 by 0-1mm. The portion of the insulating layer 300 protruding towards the second side 250 may be perpendicular to the second side 250 to prevent the insulating layer 300 from covering the second side 250 and thus affecting air cooling.

[0048] Based on the above embodiments, in one possible implementation, the insulating layer 300 can be a blue film. It is understood that blue films typically possess good mechanical strength and toughness, capable of withstanding certain stretching and bending without breaking. Furthermore, blue films also exhibit good insulating properties and remain stable even at high temperatures.

[0049] Based on the above embodiments, in one possible implementation, the thickness of the insulating layer 300 may be less than or equal to 0.11 mm. In this application embodiment, exemplarily, the thickness of the insulating layer 300 may be 0.11 mm. It is understood that if the insulating layer 300 is too thin, the burrs of the main body 200 may still puncture the battery cell 500. If the insulating layer 300 is too thick, it will occupy too much space in the battery module 400, which is detrimental to the miniaturization design of the battery module 400.

[0050] Based on the above embodiments, in one possible implementation, the main body 200 can be made of aluminum. In this embodiment, the main body 200 can be formed by extruding aluminum profiles. It is understood that the main body 200 made of aluminum has excellent strength-to-weight ratio, corrosion resistance, and conductivity. Thus, since the insulating layer 300 has insulating and protective properties, the main body 200 and the insulating layer 300 can be matched to prevent the conductive main body 200 from conducting with the battery cell 500.

[0051] Based on the above embodiments, in one possible implementation, the tensile strength of the main body 200 can be greater than or equal to 150 MPa, and the yield stress limit of the main body 200 can be greater than or equal to 115 MPa. In this application embodiment, exemplarily, the tensile strength of the main body 200 can be 150 MPa, and the yield stress limit of the main body 200 can be 115 MPa. It is understood that the main body 200 can have good mechanical properties, thereby enhancing the service life of the air duct heat dissipation device 100.

[0052] Continue to refer to Figure 2 Based on the above embodiments, the inner sidewall of the through portion 210 of the main body 200 can be a serrated structure. The inner sidewall may be provided with serrations 260. In one possible implementation, the number of serrations 260 can be several; this application embodiment does not limit the number of serrations 260. In this application embodiment, several serrations 260 can be arranged side-by-side in the second direction to form a serrated structure. It is understood that the serrated structure can increase the structural strength and rigidity of the air duct heat dissipation device 100, thereby reducing vibration and deformation. It can also increase the degree of airflow turbulence, thereby enhancing the heat dissipation efficiency of the air duct heat dissipation device 100.

[0053] refer to Figure 3 This application provides a battery module 400 in a second aspect. The battery module 400 may include the aforementioned heat dissipation device 100 and battery cell 500. In one possible implementation, the number of heat dissipation devices 100 and battery cell 500 can be multiple; this application does not limit the number of heat dissipation devices 100 and battery cell 500. In this application embodiment, multiple battery cell 500s can be stacked upwards. It is understood that each heat dissipation device 100 can be located between every two stacked battery cell 500s, wherein the first side 240 of the heat dissipation device 100 can face the battery cell 500, and the insulating layer 300 of the heat dissipation device 100 can be in contact with the battery cell 500. In this way, the air duct heat dissipation device 100 and the cell unit 500 are combined, so that several air duct heat dissipation devices 100 are evenly inserted between several stacked cell units 500, which facilitates airflow through the air duct heat dissipation device 100, thereby achieving heat dissipation of the cell unit 500 and improving the heat dissipation efficiency of the entire battery module 400.

[0054] Based on the above embodiments, the air duct heat dissipation device 100 and the battery cell unit 500 can be fixedly connected by an adhesive. In one possible implementation, the insulating layer 300 of the air duct heat dissipation device 100 and the outer surface of the battery cell unit 500 can be bonded together by an adhesive, thereby facilitating the fixation between the air duct heat dissipation device 100 and the battery cell unit 500.

[0055] In this embodiment, the air duct heat dissipation device 100 provided in this application embodiment can cover the outer surface of the main body 200 of the air duct heat dissipation device 100 with an insulating layer 300, which facilitates its cooperation with the battery cell unit 500. It also provides good insulation and protection performance without affecting the airflow of the main body 200.

[0056] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0057] It should be noted that phrases such as "in specific implementations," "in some embodiments," "in this embodiment," and "exemplarily" in the specification indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0058] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0059] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0060] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0061] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A duct cooling device, characterized in that, include: The main body has a plurality of through portions in a first direction, and the plurality of through portions are spaced apart in a second direction to form a plurality of heat dissipation ducts. An insulating layer is provided, which covers the outer surface of the main body and protrudes from the main body in the first direction; The insulating layer protrudes from the main body at a distance ranging from 0 to 1 mm.

2. The air duct heat dissipation device according to claim 1, characterized in that, The main body has a top surface, a bottom surface, two first side surfaces, and two second side surfaces, and the top surface, the bottom surface, the two first side surfaces, and the two second side surfaces are all arranged opposite to each other; The insulating layer covers the top surface, the bottom surface, and the two first side surfaces; The through section is located on the second side.

3. The air duct heat dissipation device according to claim 2, characterized in that, The insulating layer is provided to protrude toward the second side.

4. The air duct heat dissipation device according to any one of claims 1-3, characterized in that, The insulating layer is a blue film.

5. The air duct heat dissipation device according to any one of claims 1-3, characterized in that, The thickness of the insulating layer is less than or equal to 0.11 mm.

6. The air duct heat dissipation device according to claim 1, characterized in that, The main body is made of aluminum.

7. The air duct heat dissipation device according to claim 6, characterized in that, The tensile strength of the main body is greater than or equal to 150 MPa, and the yield stress limit of the main body is greater than or equal to 115 MPa.

8. The air duct heat dissipation device according to claim 7, characterized in that, The inner wall of the main body with the through section has a serrated structure.

9. A battery module, characterized in that, include: Several stacked battery cell units; Several airflow cooling devices according to any one of claims 1-8, each of the airflow cooling devices being located between every two of the battery cells, with the insulating layer of the airflow cooling device facing the battery cell.

10. The battery module according to claim 9, characterized in that, The air duct heat dissipation device and the battery cell unit are fixedly connected by adhesive.

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