Composite liquid cooling bottom protective plate, battery module, battery pack and electric equipment

Abstract

The utility model relates to the technical field of liquid cooling plate protection, and provides a composite liquid cooling bottom protection plate, a battery module, a battery pack and electric equipment.The composite liquid cooling bottom protection plate comprises a liquid cooling plate and a bottom protection plate, one side face of the liquid cooling plate is provided with at least one protruding part, the tail end of the protruding part is provided with a via hole, a cavity is formed in the protruding part, and the through hole is communicated with the cavity. The projection area of the cross section of the cavity is larger than that of the via hole; the bottom protection plate is provided with a convex column capable of extending into the convex part, the length of the convex column is larger than the depth of the convex part, the bottom protection plate and the liquid cooling plate are attached in a hot-pressing mode, and the convex column forms an anti-falling part in the convex part. According to the scheme, when the composite liquid cooling bottom protection plate is used, even if a delamination phenomenon occurs between the bottom protection plate and the liquid cooling plate, the bottom protection plate cannot directly fall off.

Description

Technical Field

[0001] The present application relates to the technical field of liquid cooling plate protection, and more specifically, to a composite liquid cooling bottom guard plate, a battery module, a battery pack and electrical equipment. Background Art

[0002] At present, there is a solution to set the liquid cooling plate at the bottom of the battery pack. In order to improve the protection of the liquid cooling plate at the bottom, a bottom guard plate is set under the liquid cooling plate. In this solution, the liquid cooling plate is generally an aluminum plate, and the bottom guard plate is a polymer composite material plate, such as a plastic honeycomb plate, a foamed plastic plate, etc. The bottom guard plate and the liquid cooling plate are connected by gluing and hot pressing, and the bottom guard plate is deformed by molding to complement the flow channel surface of the liquid cooling plate. Since the polarity of polymer materials and metal materials is too different, it is necessary to apply glue between the liquid cooling plate and the polymer material bottom guard plate, and use adhesive to connect the two together. However, the automobile chassis environment is complex, and the bottom guard plate and the liquid cooling plate are only glued together. The glue has aging failure problems under the long-term coupling of complex force fields and temperature and humidity fields. After the glue ages and fails, the bottom guard plate may fall off as a whole. Utility Model Content

[0003] In order to overcome at least one disadvantage of the above-mentioned prior art, the purpose of the present application is to provide a composite liquid-cooled bottom guard plate, a battery module, a battery pack and an electrical device.

[0004] The technical means adopted by this application to solve the above technical problems are:

[0005] On the one hand, the embodiment of the present application provides a composite liquid cooling bottom guard plate, comprising:

[0006] A liquid cooling plate, wherein at least one protrusion is provided on one side surface of the liquid cooling plate, a through hole is provided at the end of the protrusion, a cavity is formed inside the protrusion, and a cross-sectional projection area of ​​the cavity is larger than a projection area of ​​the through hole;

[0007] A bottom guard plate is provided with a convex column which can extend into the raised portion, the length of the convex column is greater than the depth of the raised portion, the bottom guard plate and the liquid cooling plate are heat-pressed together, and the convex column forms an anti-slip portion in the raised portion.

[0008] In the embodiment of the present application, by providing the raised portion on the liquid cooling plate and the convex column on the bottom guard plate, when the bottom guard plate is connected to the liquid cooling plate by thermal pressing, the convex column can extend into the raised portion and deform under the action of thermal pressing to fill the cavity of the raised portion, thereby forming the anti-slip portion. When the composite liquid cooling bottom guard plate is in use, even if delamination occurs between the bottom guard plate and the liquid cooling plate, the bottom guard plate will not fall off directly.

[0009] In some embodiments, a plurality of flow channels are disposed in the liquid cooling plate, and the flow channels are convexly disposed on the side of the liquid cooling plate;

[0010] The protrusion and the flow channel are arranged on the same side of the liquid cooling plate.

[0011] In the embodiment of the present application, the flow channel is convexly arranged on the side of the liquid cooling plate, so that the surface of the liquid cooling plate can form an uneven structure, thereby increasing the fitting area with the bottom guard plate.

[0012] In some embodiments, the flow channel and the protrusion are formed by stamping, and the flow channel and the protrusion are independent of each other.

[0013] In the embodiment of the present application, by arranging the flow channel and the protrusion to be independent of each other, the arrangement of the protrusion will not affect the operation of the flow channel, and at the same time, the space on the surface of the liquid cooling plate can be easily utilized.

[0014] In some embodiments, the liquid cooling plate includes a flow channel plate and a flat cover plate, and the flow channel plate is welded to the flat cover plate;

[0015] The flow channel and the protrusion are arranged on the flow channel plate.

[0016] In the embodiment of the present application, by configuring the liquid cooling plate to include the flow channel plate, it is possible to facilitate processing of the flow channel and the protrusion.

[0017] In some embodiments, at least one wall of the cavity is inclined.

[0018] In the embodiment of the present application, by arranging the wall surface of the cavity in an inclined manner, it is possible to increase the resistance of the anti-detachment portion to detach.

[0019] In some embodiments, the via hole is in a shape of a circle, an ellipse, or a polygon;

[0020] The shape of the starting end of the protrusion is similar to that of the via hole, and the area thereof is larger than that of the via hole.

[0021] In the embodiment of the present application, by designing the shapes of the via hole and the protrusion, the shapes of the via hole and the protrusion can be selected according to different stresses.

[0022] In some embodiments, the protrusion is welded to a side surface of the liquid cooling plate.

[0023] In the embodiment of the present application, the protrusion may also be directly welded to the liquid cooling plate, thereby forming a whole with the liquid cooling plate.

[0024] On the other hand, an embodiment of the present application provides a battery module, in which the composite liquid-cooled bottom guard plate as described above is arranged.

[0025] In the embodiment of the present application, the composite liquid-cooled bottom guard plate can be applied to the battery module, so that when the battery module is used for a long time, direct separation between the bottom guard plate and the liquid-cooled plate can be avoided.

[0026] On the other hand, an embodiment of the present application provides a battery pack, which is provided with the composite liquid-cooled bottom guard plate as described above.

[0027] In the embodiment of the present application, the composite liquid-cooled bottom guard plate can be applied to the battery pack, so that when the battery pack is used for a long time, direct separation between the bottom guard plate and the liquid-cooled plate can be avoided.

[0028] On the other hand, an embodiment of the present application provides an electrical device in which the composite liquid-cooled bottom guard plate as described above is arranged.

[0029] In the embodiment of the present application, the composite liquid-cooled bottom guard plate can be applied to the electrical equipment, so that when the electrical equipment is used for a long time, direct separation between the bottom guard plate and the liquid-cooled plate can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the partial cross-sectional structure of the composite liquid-cooled bottom guard plate of this application.

[0032] Figure 2 This is a schematic diagram of the structure of the composite liquid-cooled bottom guard plate of this application.

[0033] Figure 3 This is a schematic diagram of the structure of the bottom guard plate of this application.

[0034] Figure 4 This is a schematic diagram of the structure of the liquid cooling plate of this application.

[0035] Marking Description:

[0036] 1-liquid cooling plate, 11-protrusion, 111-through hole, 12-flow channel, 13-flow channel plate, 14-flat cover plate;

[0037] 2-bottom guard plate, 21-convex column, 211-anti-slip portion. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

[0039] It should be noted that: unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] like Figure 1-4 As shown, this embodiment provides a composite liquid-cooled bottom guard plate, including a liquid-cooled plate 1 and a bottom guard plate 2, wherein the bottom guard plate 2 and the liquid-cooled plate 1 are connected by hot pressing to form a whole.

[0041] In some embodiments, in order to improve the fitting effect between the bottom guard plate 2 and the liquid cooling plate 1 , glue may be applied between the bottom guard plate 2 and the liquid cooling plate 1 to form an adhesive connection relationship between the bottom guard plate 2 and the liquid cooling plate 1 .

[0042] Among them, at least one protrusion 11 is arranged on one side surface of the liquid cooling plate 1 , a through hole 111 is opened at the end of the protrusion 11 , a cavity is formed inside the protrusion 11 , and the cross-sectional projection area of ​​the cavity is larger than the projection area of ​​the through hole 111 .

[0043] A boss 21 is provided on the bottom guard plate 2 and can extend into the raised portion 11. The length of the boss 21 is greater than the depth of the raised portion 11. During installation, the bottom guard plate 2 and the liquid cooling plate 1 are heat-pressed together, and the boss 21 extends into the raised portion 11, so that the boss 21 forms an anti-slip portion 211 in the raised portion 11.

[0044] In some embodiments, the convex pillars 21 and the protruding portions 11 are arranged in a one-to-one correspondence.

[0045] By means of the raised portion 11 provided on the liquid cooling plate 1 and the convex column 21 provided on the bottom guard plate 2, when the bottom guard plate 2 is connected to the liquid cooling plate 1 by hot pressing, the convex column 21 can extend into the raised portion 11, and deform under the action of hot pressing to fill the cavity of the raised portion 11, thereby forming the anti-detachment portion 211. When the composite liquid cooling bottom guard plate is in use, even if delamination occurs between the bottom guard plate 2 and the liquid cooling plate 1, the bottom guard plate 2 will not fall directly, thereby facilitating safety during use and subsequent maintenance.

[0046] As one application example, a plurality of flow channels 12 are arranged in the liquid cooling plate 1, and the flow channels 12 are arranged convexly on the side of the liquid cooling plate 1, and the convex portion 11 and the flow channels 12 are arranged on the same side of the liquid cooling plate 1. Figure 4 By arranging the flow channel 12 convexly on the side of the liquid cooling plate 1 , the surface of the liquid cooling plate 1 can form an uneven structure, thereby increasing the fitting area with the bottom guard plate 2 .

[0047] In some embodiments, the liquid cooling plate 1 includes a flow channel plate 13 and a flat cover plate 14, and the flow channel plate 13 and the flat cover plate 14 are connected by welding; the flow channel 12 and the protrusion 11 are arranged on the flow channel plate 13. By configuring the liquid cooling plate 1 to include the flow channel plate 13, the flow channel 12 and the protrusion 11 can be processed on the flow channel plate 13 first, and then connected by welding to the flat cover plate 14, which can be more convenient in operation.

[0048] In some embodiments, the flow channel 12 and the protrusion 11 are stamped on the flow channel plate 13. The stamping method can be more convenient in processing.

[0049] In some embodiments, the flow channel 12 and the protrusion 11 are independently arranged; for example, the protrusion 11 is arranged between the two flow channels 12, and at this time, reference can still be made to Figure 4By arranging the flow channel 12 and the protrusion 11 to be independent of each other, the arrangement of the protrusion 11 will not affect the operation of the flow channel 12, and the space on the surface of the liquid cooling plate 1 can be easily utilized.

[0050] As an example of one application, Figure 1 As shown, at least one wall surface of the cavity of the protrusion 11 is inclined. By arranging the wall surface of the cavity in an inclined manner, the escape resistance of the anti-escape portion 211 can be increased.

[0051] In some embodiments, Figure 4 As shown, the shape of the via hole 111 can be set to be one of circular, elliptical and polygonal; the shape of the starting end of the protrusion 11 is similar to the shape of the via hole 111, and the area is larger than the area of ​​the via hole 111.

[0052] In some embodiments, part of the protrusion 11 may be configured in a truncated cone shape.

[0053] In some embodiments, part of the raised portion 11 may be provided as strip-shaped ribs.

[0054] In some embodiments, the shapes of different protrusions 11 can be set to be different, such as Figure 4 As shown, the convex portion 11 may be a truncated cone, or the convex portion 11 may be a strip-shaped rib.

[0055] By designing the shapes of the via hole 111 and the protruding portion 11 , the shapes of the via hole 111 and the protruding portion 11 can be selected according to different stresses.

[0056] As an application example, the protrusion 11 can also be directly welded to the liquid cooling plate 1, so as to be integrated with the liquid cooling plate 1 by welding.

[0057] On the other hand, the present embodiment provides a battery module, in which the composite liquid-cooled bottom guard plate as described above is arranged. By applying the composite liquid-cooled bottom guard plate in the battery module, the bottom guard plate 2 and the liquid-cooled plate 1 can be prevented from being directly separated during long-term use of the battery module.

[0058] On the other hand, the present embodiment also provides a battery pack, in which the composite liquid-cooled bottom guard plate as described above is arranged. By applying the composite liquid-cooled bottom guard plate in the battery pack, the bottom guard plate 2 and the liquid-cooled plate 1 can be prevented from being directly separated during long-term use of the battery pack.

[0059] On the other hand, the present embodiment also provides an electrical device, in which the composite liquid cooling bottom guard plate as described above is arranged. By applying the composite liquid cooling bottom guard plate in the electrical device, the electrical device can avoid direct separation between the bottom guard plate 2 and the liquid cooling plate 1 during long-term use.

[0060] In some embodiments, the electrical device may be configured as an electric vehicle.

[0061] The above description is only a specific implementation mode of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should also be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A composite liquid cooling bottom guard plate, characterized in that: include: A liquid cooling plate, wherein at least one protrusion is provided on one side surface of the liquid cooling plate, a through hole is provided at the end of the protrusion, a cavity is formed inside the protrusion, and a cross-sectional projection area of ​​the cavity is larger than a projection area of ​​the through hole; A bottom guard plate is provided with a convex column which can extend into the raised portion, the length of the convex column is greater than the depth of the raised portion, the bottom guard plate and the liquid cooling plate are heat-pressed together, and the convex column forms an anti-slip portion in the raised portion.

2. The composite liquid cooling bottom guard plate according to claim 1, characterized in that: A plurality of flow channels are arranged in the liquid cooling plate, and the flow channels are arranged convexly on the side of the liquid cooling plate; The protrusion and the flow channel are arranged on the same side of the liquid cooling plate.

3. The composite liquid cooling bottom guard plate according to claim 2, characterized in that: The flow channel and the protrusion are formed by stamping, and the flow channel and the protrusion are independent of each other.

4. The composite liquid cooling bottom guard plate according to claim 2, characterized in that: The liquid cooling plate comprises a flow channel plate and a flat cover plate, and the flow channel plate is welded to the flat cover plate; The flow channel and the protrusion are arranged on the flow channel plate.

5. The composite liquid cooling bottom guard plate according to any one of claims 1 to 4, characterized in that: At least one wall surface of the cavity is arranged in an inclined manner.

6. The composite liquid cooling bottom guard plate according to claim 5, characterized in that: The shape of the via hole is one of a circle, an ellipse and a polygon; The shape of the starting end of the protrusion is similar to that of the via hole, and the area thereof is larger than that of the via hole.

7. The composite liquid cooling bottom guard plate according to claim 1 or 2, characterized in that: The protrusion is welded to the side surface of the liquid cooling plate.

8. A battery module, characterized in that: A composite liquid-cooled bottom guard plate as described in any one of claims 1 to 7 is arranged therein.

9. A battery pack, characterized in that: A composite liquid-cooled bottom guard plate as described in any one of claims 1 to 7 is arranged therein.

10. An electrical device, characterized in that: A composite liquid-cooled bottom guard plate as described in any one of claims 1 to 7 is arranged therein.

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