Sealing structure and vehicle

Abstract

The embodiment of the application provides a sealing structure and a vehicle, and belongs to the technical field of vehicle sealing. The sealing structure comprises: a vehicle body, the vehicle body has a first mounting surface; a battery device, the battery device has a second mounting surface, at least one of the first mounting surface and the second mounting surface is a concave-convex surface; a sealing element, the sealing element is sealingly connected between the first mounting surface and the second mounting surface, and the profile of the sealing element towards the first mounting surface and the second mounting surface is respectively adapted to the first mounting surface and the second mounting surface. Without adding a flat pad plate to level the concave-convex surface, the gap between the first mounting surface and the second mounting surface can be effectively sealed by the sealing element, and the profile of the sealing element is adapted to the first mounting surface and the second mounting surface, so that the sealing is reliable and effective.

Description

Technical Field

[0001] This application relates to the field of vehicle sealing technology, and more particularly to a sealing structure and a vehicle. Background Technology

[0002] When assembling the battery pack with the vehicle body, the sealing performance requirements between the battery pack and the bottom of the vehicle body must be met.

[0003] In the prior art, a cooler is installed on the top of the battery device. The side of the cooler facing the vehicle body is an irregular flow channel surface with unevenness. When the battery device is connected to the flat surface of the bottom of the vehicle body, in order to ensure reliable sealing, a flat pad needs to be added to the flow channel surface to level the surface of the battery device. Then, a sealing component is used to seal and adhere the pad to the bottom of the vehicle body.

[0004] However, such a sealed structure increases the weight of the battery pack and the entire vehicle. Utility Model Content

[0005] This application provides a sealing structure and a vehicle to solve the problem that the sealing structure of existing battery devices requires the addition of a gasket, which increases the weight of the vehicle.

[0006] In a first aspect, embodiments of this application provide a sealing structure, including:

[0007] The vehicle body has a first mounting surface;

[0008] A battery device having a second mounting surface, wherein at least one of the first mounting surface and the second mounting surface is a concave-convex surface;

[0009] A sealing element is provided, which is sealed between a first mounting surface and a second mounting surface. The profile of the sealing element facing the first mounting surface and the second mounting surface are respectively adapted to the first mounting surface and the second mounting surface.

[0010] In one possible implementation, the sealing structure provided in this application embodiment has a cooling plate on the top of the battery device, and a flow channel is bent around the cooling plate along the length and width directions of the battery device. The flow channel protrudes relative to the cooling plate, and the side of the cooling plate and the flow channel facing the first mounting surface forms a second mounting surface.

[0011] In one possible implementation, the sealing structure provided in this application includes a sealing element comprising:

[0012] The longitudinal section extends in the same direction as the length of the battery device;

[0013] The lateral segment extends in the same direction as the width of the battery device;

[0014] The connecting segment connects the longitudinal segment and the transverse segment, and is inclined relative to the longitudinal segment and the transverse segment.

[0015] In one possible implementation, the sealing structure provided in this application embodiment has both longitudinal and transverse sections disposed on the portion of the cooling plate located between two adjacent flow channels.

[0016] In one possible implementation, the sealing structure provided in this application embodiment has at least a molded foam structure for the connecting section.

[0017] In one possible implementation, the sealing structure provided in this application embodiment has both longitudinal and transverse segments as die-cut structures.

[0018] In one possible implementation, the sealing structure provided in this application embodiment is formed by sequentially bonding or integrally molding the longitudinal section, the transverse section, and the connecting section.

[0019] In one possible implementation, the sealing structure provided in this application embodiment has a sealing width of the sealing element that is greater than or equal to 18 mm and less than or equal to 22 mm.

[0020] The sealing height of the seal is greater than or equal to 1.6 mm and less than or equal to 10.8 mm.

[0021] In one possible implementation, the sealing structure provided in this application embodiment has an elastic compression of the seal element that is greater than or equal to 25% of its own thickness and less than or equal to 90% of its own thickness.

[0022] Secondly, embodiments of this application provide a vehicle, including a vehicle body and any of the aforementioned sealing structures disposed on the vehicle body.

[0023] The sealing structure and vehicle provided in this application include a first mounting surface disposed on the vehicle body, a second mounting surface disposed on the battery device, and a sealing element. At least one of the first and second mounting surfaces is a concave-convex surface, and the sealing element is sealingly connected between the first and second mounting surfaces and corresponds and fits to both surfaces. Therefore, there is no need to add a flat shim for leveling on the concave-convex surface; the sealing element can effectively seal the gap between the first and second mounting surfaces. Furthermore, the sealing element fits and conforms to the profiles of the first and second mounting surfaces, ensuring a reliable and effective seal. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 This is a schematic diagram showing the disassembled structure of the sealing structure provided in the embodiments of this application;

[0026] Figure 2 for Figure 1 Schematic diagram of the middle sealing component;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure of the sealing component and the battery device;

[0028] Figure 4 for Figure 3 A partial structural schematic diagram of the central sealing component from another perspective.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100 - Body;

[0031] 200-battery device;

[0032] 210 - Cooling plate;

[0033] 220-flow channel;

[0034] 300 - Seals;

[0035] 310 - Longitudinal segment;

[0036] 320 - Transverse segment;

[0037] 330 - Connecting section.

[0038] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the absence of conflict, the following embodiments and features can be combined with each other.

[0040] A cooler is installed on the top of the battery pack. The side of the cooler facing the vehicle body has an irregular, uneven flow channel surface, while the side of the vehicle body facing the battery pack is usually flat. When the battery pack is connected to the flat surface at the bottom of the vehicle body, it is necessary to ensure a reliable seal between the flat and non-flat surfaces. Furthermore, the seal between the battery pack and the vehicle body must also meet the dynamic torsion requirements between the battery pack and the vehicle.

[0041] Currently, the main approach involves adding a flat pad to the flow channel surface to level the battery pack surface, and then sealing the pad with a sealant between the pad and the bottom of the vehicle body. However, this sealing structure increases the weight of the battery pack and the entire vehicle.

[0042] Alternatively, sealant can be applied between the battery pack and the vehicle body, but this is difficult to meet the dynamic torsion requirements between the battery pack and the vehicle. Another option is to use a solid silicone seal between the battery pack and the vehicle body, but the solid silicone seal has high rebound stress and a small effective compression range.

[0043] To overcome the shortcomings of the prior art, the sealing structure and vehicle provided in this application include a first mounting surface disposed on the vehicle body, a second mounting surface disposed on the battery device, and a sealing element. At least one of the first and second mounting surfaces is a concave-convex surface, and the sealing element is sealingly connected between the first and second mounting surfaces and corresponds and fits to both surfaces. Therefore, there is no need to add a flat pad for leveling on the concave-convex surface; the sealing element can effectively seal the gap between the first and second mounting surfaces. Furthermore, the sealing element fits and conforms to the surface profiles of the first and second mounting surfaces, ensuring reliable and effective sealing without increasing the weight of the battery device and the vehicle.

[0044] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the present invention.

[0045] Reference Figures 1 to 4 As shown, this application provides a sealing structure, including:

[0046] Body 100, body 100 has a first mounting surface;

[0047] The battery device 200 has a second mounting surface, and at least one of the first mounting surface and the second mounting surface is a concave-convex surface.

[0048] A seal 300 is sealed between a first mounting surface and a second mounting surface, and the profile of the seal 300 facing the first mounting surface and the second mounting surface are respectively adapted to the first mounting surface and the second mounting surface.

[0049] It is understood that a first mounting surface is provided at the bottom of the vehicle body 100, and a second mounting surface is provided at the top of the battery device 200, so that the battery device 200 is mounted to the bottom of the vehicle body 100 by bolts, and the first mounting surface and the second mounting surface can be connected to each other, with a fitting gap between the first mounting surface and the second mounting surface.

[0050] To address this, the seal 300 can be positioned between the first mounting surface and the second mounting surface to ensure a tight seal between them.

[0051] Since at least one of the first mounting surface and the second mounting surface is a concave-convex surface, and the profile of the seal 300 corresponds to and is adapted to the first mounting surface and the second mounting surface, the seal 300 can fit better between the two mounting surfaces, providing a precise shape match, reducing the sealing gap, thereby effectively preventing the intrusion of liquid or gas and improving the reliability of the seal.

[0052] Furthermore, during the installation of the seal 300, it is not necessary to install a leveling pad on the first or second mounting surface with a concave-convex surface structure, which simplifies the sealing structure, reduces the weight of the sealing structure, and lowers the cost of the sealing structure.

[0053] Therefore, the sealing structure and vehicle provided in this application embodiment include a first mounting surface disposed on the vehicle body 100, a second mounting surface disposed on the battery device 200, and a sealing element 300. At least one of the first and second mounting surfaces is a concave-convex surface, and the sealing element 300 is sealingly connected between the first and second mounting surfaces and corresponds and fits to both surfaces. Thus, there is no need to add a flat pad for leveling on the concave-convex surface; the sealing element 300 can effectively seal the gap between the first and second mounting surfaces. Furthermore, the sealing element 300 fits and conforms to the profiles of the first and second mounting surfaces, ensuring a reliable and effective seal.

[0054] Furthermore, the sealing structure provided in this application embodiment can also be applied to sealing other working conditions such as planar and non-planar surfaces, and two irregular planes. This application does not impose any limitations on this.

[0055] In some embodiments, refer to Figures 1 to 4 As shown, a cooling plate 210 is provided on the top of the battery device 200. A flow channel 220 is bent around the cooling plate 210 along the length and width directions of the battery device 200. The flow channel 220 protrudes relative to the cooling plate 210. The cooling plate 210 and the flow channel 220 form a second mounting surface on the side facing the first mounting surface.

[0056] It is understandable that bending the flow channel 220 along the length and width of the battery device 200 can effectively increase the length of the flow channel 220, thereby improving the heat dissipation efficiency of the cooling medium in the flow channel 220 and improving the heat dissipation effect of the cooling plate 210 on the battery device 200.

[0057] The cooling plate 210 is a flat plate attached to the top of the battery device 200 by thermally conductive structural adhesive. The flow channel 220 protrudes relative to the cooling plate 210, so that the common surface of the cooling plate 210 and the flow channel 220 is concave and convex, thus serving as a second mounting surface, and is sealed to the vehicle body 100 by the sealing member 300.

[0058] In some embodiments, refer to Figures 1 to 4 As shown, the seal 300 includes:

[0059] The longitudinal segment 310 extends in the same direction as the length of the battery device 200.

[0060] The lateral segment 320 extends in the same direction as the width of the battery device 200.

[0061] Connecting segment 330 connects longitudinal segment 310 and transverse segment 320, and is inclined relative to longitudinal segment 310 and transverse segment 320.

[0062] It is understandable that when the battery device 200 is installed, its length direction is usually consistent with the length direction of the vehicle body 100, and its width direction is also consistent with the width direction of the vehicle body 100. The sealing element 300 is thus designed to include a longitudinal section 310, a transverse section 320, and a connecting section 330.

[0063] The longitudinal section 310 is aligned with the length direction of the battery device 200 and the vehicle body 100, and the transverse section 320 is aligned with the width direction of the battery device 200 and the vehicle body 100, so that the seal 300 can better enclose the different directional areas of the common surface of the cooling plate 210 and the flow channel 220.

[0064] This allows it to adapt to the complex shapes of the cooling plate 210 and the flow channel 220, especially at the edges and corners of the shapes. By setting a connecting section 330 that corresponds to the structure of the vehicle body 100, the connecting section 330 is adapted to the second mounting surface to achieve effective sealing.

[0065] The structure formed by the longitudinal section 310, the transverse section 320 and the inclined connecting section 330 enables the seal 300 to better adapt to stresses in different directions or to torsional deformation forces between the battery device 200 and the vehicle body 100, and to play a buffering and regulating role, so as to avoid failure of the seal 300 due to excessive deformation in one direction.

[0066] In this embodiment, the longitudinal segment 310 and the transverse segment 320 are arranged opposite each other along the width and length directions of the battery device 200, respectively. Furthermore, depending on the structure of the vehicle body 100 and the cooling plate 210 structure of the battery device 200, a connecting segment 330 is provided between the transverse segment 320 and the longitudinal segment 310 for connection, or the longitudinal segment 310 and the transverse segment 320 are directly connected. This application does not impose any restrictions on this.

[0067] In specific implementation, refer to Figures 1 to 4 As shown, both the longitudinal section 310 and the transverse section 320 are disposed on the portion of the cooling plate 210 located between two adjacent flow channels 220.

[0068] It is understandable that by setting both the longitudinal section 310 and the transverse section 320 of the seal 300 on the cooling plate 210 between two adjacent flow channels 220, the longitudinal section 310 and the transverse section 320 can be located in the concave part of the concave-convex surface. In this way, the longitudinal section 310 and the transverse section 320 are limited by the convex part of the concave-convex surface, so that the seal 300 can be positioned and installed more conveniently and quickly.

[0069] Furthermore, the flow channels 220 on both sides of the longitudinal section 310 and the transverse section 320 can position the seal 300 to limit the seal 300 from moving or shifting to both sides in the extension direction, effectively ensuring the sealing performance of the seal 300.

[0070] Furthermore, this arrangement allows the inclined connecting section 330 to span at least one flow channel 220 extending in the length direction and one flow channel 220 extending in the width direction, and to form a concave surface on the connecting section 330 that matches the convex profile of the flow channel 220, thereby restricting the movement of the seal 300.

[0071] In some embodiments, at least the connecting segment 330 is a molded foam structure.

[0072] It is understandable that setting at least the connecting section 330 of the seal 300 as a molded foam structure can make the connecting section 330 a molded foam structure, while the longitudinal section 310 and the transverse section 320 can be structures with other processing forms, or the seal 300 as a whole can be a molded foam structure.

[0073] This design gives the molded foam structure good elasticity and compressibility. During the sealing process, it can better fill the common surface of the cooling plate 210 and the flow channel 220, ensuring a good seal, and it can also adapt to a certain degree of pressure change.

[0074] During the operation of the battery device 200 or the driving of the vehicle, the pressure of the sealing part may change due to factors such as temperature change, vibration, and impact. The connecting section 330 of the molded foam structure, as well as the longitudinal section 310 and the transverse section 320, can automatically adapt their shape and sealing state according to the pressure change to maintain stable sealing performance.

[0075] Furthermore, when only the connecting section 330 is set as a molded foam structure, both the longitudinal section 310 and the transverse section 320 can be set as die-cut structures.

[0076] Therefore, the processing method of each segment of the sealing element 300 can be flexibly selected according to the different positions of each segment and the different sealing requirements, saving processing costs and ensuring sealing effect.

[0077] The molding foam structure requires mixing the silicone foam adhesive of components A and B in a specific ratio and injecting it into a cavity mold pre-made according to the sealing structure. Pressure is applied inside the mold to make the silicone foam adhesive foam, followed by secondary vulcanization. The sealant 300 is then attached to the second mounting surface using double-sided tape or other adhesive.

[0078] It should be noted that the structure of the mold needs to be compatible with the first mounting surface and the second mounting surface.

[0079] In some embodiments, the pre-mixed foamed silicone can be directly applied to the second mounting surface on the assembly line. The sealing area can be arranged by controlling the glue application trajectory. Limiting fixtures and pressure plates can be set on the second mounting surface to control the foaming state and achieve online foaming. This application does not limit this.

[0080] The connecting section 330 or the entire sealing component 300 is made by molding foaming process, which makes the sealing component 300 have better high temperature resistance, aging resistance and sealing effect. In addition, according to the sealing gap requirements of the sealing structure, the main components such as silicone resin, catalyst and inhibitor in silicone foam adhesive can be selected and adjusted in appropriate proportions to obtain better crosslinking density and compression rebound stress.

[0081] Meanwhile, since the seal 300 is made at least partially by compression molding foaming process, the mold forming process can make the corresponding part without molded surface and the circumference is closed pore, which can reduce the water absorption rate of the seal 300 and improve the sealing effect.

[0082] Furthermore, for the longitudinal section 310 and the transverse section 320 of the die-cut structure, the die-cutting material can be cut to form the required length of the longitudinal section 310 and the transverse section 320, and this application does not impose any restrictions on this.

[0083] In practice, the longitudinal section 310, the transverse section 320, and the connecting section 330 are sequentially bonded together or integrally formed.

[0084] It is understandable that when the longitudinal section 310, the transverse section 320, and the connecting section 330 are all molded foam structures, a complete sealing element 300 mold can be set to make an integral sealing element 300; while when the longitudinal section 310 and the transverse section 320 are die-cut structures and the connecting section 330 is a molded foam structure, the longitudinal section 310, the transverse section 320, and the connecting section 330 can be made separately and then bonded together in sequence. This application does not impose any restrictions on this.

[0085] Furthermore, in some embodiments, the sealing width of the seal 300 is greater than or equal to 18 mm and less than or equal to 22 mm;

[0086] The sealing height of seal 300 is greater than or equal to 1.6 mm and less than or equal to 10.8 mm.

[0087] It is understandable that setting the width of the seal 300 to 18-20mm can effectively ensure the sealing effect of the seal 300. In specific implementation, the width of the seal 300 can be set to 20mm to achieve a sealing width of 20mm.

[0088] Since the height of the flow channel 220 on the second mounting surface relative to the liquid cooling plate is 2.8mm, and the gap between the liquid cooling plate and the first mounting surface is 7.6mm, the sealing gap between the first mounting surface and the second mounting surface is greater than or equal to 4.8mm and less than or equal to 7.6mm.

[0089] Based on this, considering the flatness of the first mounting surface on the vehicle body 100, the flatness of the second mounting surface, the flatness of the assembly position between the vehicle body 100 and the battery device 200, and many other factors such as the height dimensional tolerance of the seal 300, the sealing height of the seal 300 can be set to 1.6-10.8mm, so that the seal 300 has a larger sealing range. In this embodiment, the specific value of the sealing height of the seal 300 is not limited.

[0090] Furthermore, the elastic compression of the seal 300 is greater than or equal to 25% of its own thickness and less than or equal to 90% of its own thickness.

[0091] It is easy to understand that this setting makes it easier for the effective compression of the seal 300 to meet the sealing height of the seal 300, which is 1.6-10.8mm, thereby improving the applicability of the seal 300.

[0092] This application also provides a vehicle, including a vehicle body and any of the aforementioned sealing structures disposed on the vehicle body.

[0093] The battery device 200 has been described in detail in the above embodiments and will not be repeated here.

[0094] The sealing structure and vehicle provided in this application include a first mounting surface disposed on the vehicle body 100, a second mounting surface disposed on the battery device 200, and a sealing element 300. At least one of the first and second mounting surfaces is a concave-convex surface, and the sealing element 300 is sealingly connected between the first and second mounting surfaces and corresponds and fits to both surfaces. Therefore, there is no need to add a flat pad for leveling on the concave-convex surface; the sealing element 300 can effectively seal the gap between the first and second mounting surfaces. Furthermore, the sealing element 300 fits and conforms to the profiles of the first and second mounting surfaces, ensuring a reliable and effective seal.

[0095] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, 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.

[0096] 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.

[0097] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, 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).

[0098] 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° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealing structure, characterized in that, include: The vehicle body (100) has a first mounting surface; A battery device (200) having a second mounting surface, wherein at least one of the first mounting surface and the second mounting surface is a concave-convex surface; A sealing element (300) is sealed between the first mounting surface and the second mounting surface, and the profile of the sealing element (300) facing the first mounting surface and the second mounting surface is respectively adapted to the first mounting surface and the second mounting surface.

2. The sealing structure according to claim 1, characterized in that, A cooling plate (210) is provided on the top of the battery device (200). A flow channel (220) is bent around the cooling plate (210) along the length and width directions of the battery device (200). The flow channel (220) protrudes relative to the cooling plate (210). The cooling plate (210) and the flow channel (220) form a second mounting surface on the side facing the first mounting surface.

3. The sealing structure according to claim 2, characterized in that, The seal (300) includes: The longitudinal segment (310) extends in the same direction as the length of the battery device (200); The transverse segment (320) extends in the same direction as the width of the battery device (200); A connecting segment (330) connects the longitudinal segment (310) and the transverse segment (320) and is inclined relative to the longitudinal segment (310) and the transverse segment (320).

4. The sealing structure according to claim 3, characterized in that, Both the longitudinal section (310) and the transverse section (320) are disposed on the portion of the cooling plate (210) located between two adjacent flow channels (220).

5. The sealing structure according to claim 3, characterized in that, At least the connecting section (330) is a molded foam structure.

6. The sealing structure according to claim 5, characterized in that, Both the longitudinal segment (310) and the transverse segment (320) are die-cut structures.

7. The sealing structure according to claim 3, characterized in that, The longitudinal section (310), the transverse section (320), and the connecting section (330) are sequentially bonded together or integrally formed.

8. The sealing structure according to any one of claims 1-7, characterized in that, The sealing width of the sealing element (300) is greater than or equal to 18 mm and less than or equal to 22 mm; The sealing height of the seal (300) is greater than or equal to 1.6 mm and less than or equal to 10.8 mm.

9. The sealing structure according to any one of claims 1-7, characterized in that, The elastic compression of the seal (300) is greater than or equal to 25% of its own thickness and less than or equal to 90% of its own thickness.

10. A vehicle, characterized in that, It includes a vehicle body and a sealing structure disposed on the vehicle body as described in any one of claims 1-9.

Images