Sealing assembly, battery pack and electric equipment

Abstract

The utility model discloses a sealing assembly, a battery pack and electric equipment. The sealing assembly includes a first sealing member and a second sealing member. The first seal has a plurality of cells. At least a portion of the second seal is embedded within the plurality of cells. The second seal is capable of absorbing moisture. According to the utility model, the sealing assembly comprises the second sealing element capable of absorbing water, so that the water permeating from the outside can be blocked and absorbed, the water is prevented from further entering the inside, meanwhile, the compression amount of the sealing assembly can be reduced, the sealing effect can be achieved without increasing the friction force, and the service life is prolonged; the second sealing element can also absorb water vapor in internal air, so that faults caused by generation of condensed water are prevented; after the second sealing element absorbs water, the property of the second sealing element changes, for example, the resistance value is reduced, and early warning information can be generated in advance by measuring the property change of the second sealing element.

Description

Technical Field

[0001] The utility model relates to the technical field of battery components, and in particular to a sealing component, a battery pack and an electrical device. Background Art

[0002] At present, common sealing components need to be tightly superimposed with the contact parts through fasteners so that the seal is fully compressed and generates a certain friction force to achieve a sealing effect. However, when there is water flow impact, if the impact force is greater than the friction between the sealing component and the contact part and the compression stress of the sealing component, water will enter the interior along the sealing surface; the sealing component will be permanently deformed after being compressed for a long time, which will reduce the rebound force, reduce the friction between the contact parts, and reduce the ability to prevent moisture or dust from entering the interior, increasing the risk of sealing failure; when the seal fails and water enters, the sealing component itself has no early warning ability, and when the user discovers the failure, certain consequences have already occurred.

[0003] Therefore, a sealing assembly, a battery pack and an electrical device are needed to at least partially solve the above problems. Utility Model Content

[0004] The content of the utility model introduces a series of simplified concepts, which will be further described in detail in the detailed implementation section. The content of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the present invention provides a sealing assembly, comprising:

[0006] a first sealing member having a plurality of cells; and

[0007] A second sealing member, at least a portion of which is embedded in the plurality of pores, and the second sealing member is capable of absorbing moisture.

[0008] According to the utility model, at least part of the second seal is embedded in the pores of the first seal, so that the first seal and the second seal can be connected more tightly and not easy to fall off; the second seal can block and absorb moisture that penetrates from the outside to prevent moisture from further entering the interior, and at the same time can reduce the compression of the sealing component, so that it does not need to rely solely on increasing friction to achieve the sealing effect, thereby increasing the service life; the second seal can also absorb water vapor in the internal air to prevent malfunctions due to the generation of condensed water; after the second seal absorbs moisture, its own properties will change, such as a decrease in resistance, and early warning information can be generated in advance by measuring its property changes.

[0009] Optionally, the first sealing member is made of a closed-cell foam material.

[0010] Optionally, the second sealing member is made of a polymer material.

[0011] Optionally, the second sealing member includes a first glue portion and a second glue portion, at least a portion of the first glue portion is embedded in the plurality of pores, and the second glue portion is connected to the first glue portion and is arranged obliquely to the first glue portion.

[0012] Optionally, a dimension of the first adhesive portion along a thickness direction of the sealing assembly is the same as a dimension of the first sealing member along the thickness direction.

[0013] Optionally, a cross section of the second sealing member along the second direction is L-shaped.

[0014] Optionally, a dimension of the second sealing member along the thickness direction of the sealing assembly is 5-10 mm.

[0015] Optionally, a dimension of the second sealing member along the second direction is 5-10 mm.

[0016] Optionally, the first sealing member has a through hole, the through hole penetrates the first sealing member along the thickness direction of the sealing assembly, and at least two of the through holes are spaced apart in sequence along the first direction.

[0017] A second aspect of the present invention provides a battery pack, which includes a sealing assembly according to any one of the above technical solutions.

[0018] According to the utility model, since the battery pack includes the above-mentioned sealing assembly, the battery pack has a technical effect similar to that of the sealing assembly.

[0019] Optionally, the sealing assembly is constructed as a ring extending in a circumferential direction of the battery pack, and the second sealing member is arranged on the inner side of the first sealing member.

[0020] Optionally, the battery pack includes an upper cover and a tray, and the sealing assembly is disposed between the pressing surfaces of the upper cover and the tray.

[0021] Optionally, the battery pack includes a resistance detector for monitoring the resistance of the second seal.

[0022] A third aspect of the present invention provides an electrical device, which includes a battery pack according to any one of the above technical solutions.

[0023] According to the utility model, since the electrical equipment includes the above-mentioned battery pack, the electrical equipment has a technical effect similar to that of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The following drawings of the present invention are used as a part of the present invention for understanding the present invention. The drawings show the implementation of the present invention and its description, and are used to explain the principle of the present invention.

[0025] In the attached figure:

[0026] Figure 1 It is a cross-sectional schematic diagram of a sealing assembly according to a preferred embodiment of the utility model;

[0027] Figure 2 for Figure 1 A schematic top view of the sealing assembly in FIG.

[0028] Figure 3 It is a schematic cross-sectional view of a battery pack according to a preferred embodiment of the present utility model.

[0029] Description of reference numerals:

[0030] 100: Sealing components

[0031] 110: First seal

[0032] 111: Through hole

[0033] 120: Second seal

[0034] 121: First Rubber Department

[0035] 122: Second Rubber Department

[0036] 200: Battery pack

[0037] 210: Upper cover

[0038] 220: Pallet

[0039] 230: Fasteners

[0040] 240: Adhesive backing

[0041] D1: First direction

[0042] D2: Second direction DETAILED DESCRIPTION

[0043] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0044] In order to thoroughly understand the present invention, a detailed description will be provided in the following description. Obviously, the implementation of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0046] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0047] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this document are for illustrative purposes only and are not limiting.

[0048] Now, exemplary embodiments according to the present utility model will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0049] like Figure 1 and Figure 2 As shown, the first aspect of the utility model discloses a sealing assembly 100. The sealing assembly 100 includes a first sealing member 110 and a second sealing member 120. The first sealing member 110 has a plurality of pores. At least part of the second sealing member 120 is embedded in the plurality of pores. The second sealing member 120 can absorb moisture.

[0050] Among them, the first sealing member 110 can be made of a closed-cell foam material, for example. The first sealing member 110 can be a sealing foam. In other words, the multiple bubbles of the first sealing member 110 are independent of each other and are not interconnected. The first sealing member 110 can also be hydrophobic. The second sealing member 120 can be a functional glue, that is, the second sealing member 120 can be made of a composite material composed of a polymer material, a polymer material and other materials, for example, sodium polyacrylate, polyvinyl alcohol and Congo red gel. It can be understood that the material making up the second sealing member 120 only needs to have the function of absorbing moisture, and the utility model does not limit this.

[0051] When preparing the sealing component 100, the first sealing component 110 can be prepared first, and then one side of the first sealing component 110 is immersed in the curing precursor liquid of the second sealing component 120, so that the liquid material enters the multiple bubbles of the first sealing component 110, and then solidifies to form a solid second sealing component 120. In this way, at least part of the second sealing component 120 can be embedded in the multiple bubbles to increase the connection strength.

[0052] According to the utility model, at least part of the second seal 120 is embedded in the pores of the first seal 110, so that the first seal 110 and the second seal 120 can be connected more tightly and not easily fall off; the second seal 120 can block and absorb moisture infiltrated from the outside to prevent moisture from further entering the sealed environment, and at the same time can reduce the compression of the sealing component 100, so that it does not need to rely solely on increasing friction to achieve the sealing effect, thereby increasing the service life; the second seal 120 can also absorb water vapor in the internal air to prevent malfunctions due to the generation of condensed water; after the second seal 120 absorbs moisture, its own properties will change, such as a decrease in resistance, and early warning information can be generated in advance by measuring the changes in its properties.

[0053] like Figure 2 As shown, the first seal 110 may have a through hole 111. The through hole 111 penetrates the first seal 110 along the thickness direction of the seal assembly 100. The through hole 111 is used to fix the seal assembly 100. For example, a fastener can pass through the through hole 111 to fix the seal assembly 100 to the upper and / or lower components. The first seal 110 may have at least two through holes 111, and the at least two through holes 111 are sequentially spaced apart along the first direction D1, thereby making the fixation more secure. Preferably, the compressive stress of the second seal 120 is less than the compressive stress of the first seal 110, so that there will be no disconnection between the two when fastened.

[0054] Specifically, the second sealing member 120 includes a first adhesive portion 121 and a second adhesive portion 122. At least a portion of the first adhesive portion 121 is embedded in a plurality of pores to connect with the first sealing member 110. The second adhesive portion 122 is connected to the first adhesive portion 121 and is disposed obliquely thereto.

[0055] For example, Figure 1 As shown, in one embodiment, the cross-section of the second sealing member 120 along the second direction D2 is L-shaped, that is, the first adhesive portion 121 is perpendicular to the second adhesive portion 122. Thus, the second adhesive portion 122 can be engaged with the bend of the upper part of the sealing assembly 100, further enhancing the sealing effect and preventing water and dust from penetrating (see Figure 3 The second sealing member 120 may also have a certain degree of adhesion, so that it can be more tightly bonded to the upper component to create a better sealing environment. The adhesion of the second sealing member 120 can be adjusted as needed so that it does not affect the disassembly of the overall structure.

[0056] Specifically, Figure 1 and Figure 2 As shown, the dimension of the first adhesive portion 121 along the thickness direction of the sealing assembly 100 is the same as the dimension of the first sealing member 110 along the thickness direction. The dimension T of the second sealing member 120 along the thickness direction of the sealing assembly 100 is 5-10 mm. The dimension W of the second sealing member 120 along the second direction D2 is 5-10 mm. Thus, the second sealing member 120 has a suitable dimension, which saves costs while ensuring sealing.

[0057] In this utility model, see Figure 2 The first direction D1 is the length direction of the sealing component 100, the second direction D2 is the width direction of the sealing component 100, and the thickness direction of the sealing component 100 is the height direction. The thickness direction of the sealing component, the second direction D2 and the first direction D1 are perpendicular to each other.

[0058] like Figure 3As shown, the second aspect of the utility model discloses a battery pack 200. The battery pack 200 includes the above-mentioned sealing assembly 100. The sealing assembly 100 is constructed as a ring extending along the circumferential direction of the battery pack 200, and the second sealing member 120 is arranged on the inner side of the first sealing member 110. The second sealing member 120 can not only block the external moisture of the battery pack 200 from entering, but also absorb the water vapor inside the battery pack 200. The battery pack 200 also includes an upper cover 210 and a tray 220, and the sealing assembly 100 is arranged between the pressing surfaces of the upper cover 210 and the tray 220. The battery pack 200 may also include a backing glue 240. The backing glue 240 is arranged between the sealing assembly 100 and the tray 220, so that the sealing assembly 100 and the backing glue 240 are tightly combined. The fastener 230 extends through the upper cover 210, the sealing assembly 100 and the tray 220 in sequence along the thickness direction, fixing the three together to form a sealed environment.

[0059] In the illustrated embodiment, the cross section of the second sealing member 120 along the second direction D2 is configured to be L-shaped so as to be engaged with the upper cover 210. In this case, a portion of the second sealing member 120 is compressed, so the second sealing member 120 may have elasticity.

[0060] Since the resistance value of the second seal 120 decreases after absorbing moisture, the battery pack 200 may also include a resistance detector for monitoring the resistance of the second seal 120, and early warning through resistance changes to avoid safety accidents. The resistance of multiple positions of the second seal 120 can be monitored to warn whether there is moisture infiltration. Preferably, the resistance of the second seal 120 at the position where the battery pack 200 is prone to sealing failure can be monitored to more sensitively warn whether there is moisture infiltration. Specifically, the battery pack 200 includes a battery management system (BMS), and the battery management system has the function of monitoring the resistance value, that is, the resistance detector can be a battery management system. The battery management system can be electrically connected to the second seal 120 via a wire to monitor the change in the resistance value of the second seal 120.

[0061] According to the present invention, since the battery pack 200 includes the sealing assembly 100 , the battery pack 200 has a technical effect similar to that of the sealing assembly 100 .

[0062] The third aspect of the utility model discloses an electric device, which includes the above-mentioned battery pack 200. Specifically, the electric device may include a vehicle, an aircraft, a computer, an energy storage cabinet, and the like.

[0063] According to the utility model, since the electric device includes the above-mentioned battery pack 200 , the electric device has a technical effect similar to that of the battery pack 200 .

[0064] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0065] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and explanation, and the present invention is not limited to the above-mentioned embodiments. According to the teachings of the present invention, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection required by the present invention.

Claims

1. A sealing assembly, characterized in that: include: a first sealing member, the first sealing member having a plurality of cells; as well as A second sealing member, at least a portion of which is embedded in the plurality of pores, and the second sealing member is capable of absorbing moisture.

2. The sealing assembly according to claim 1, characterized in that: The first sealing member is made of a closed-cell foam material.

3. The sealing assembly according to claim 1, characterized in that: The second sealing member is made of polymer material.

4. The sealing assembly according to claim 1, characterized in that: The second sealing member includes a first glue portion and a second glue portion, at least a portion of the first glue portion is embedded in the plurality of pores, and the second glue portion is connected to the first glue portion and is arranged obliquely to the first glue portion.

5. The sealing assembly according to claim 4, characterized in that: A dimension of the first adhesive portion along a thickness direction of the sealing assembly is the same as a dimension of the first sealing member along the thickness direction.

6. The sealing assembly according to claim 4, characterized in that: A cross section of the second sealing member along the second direction is configured to be L-shaped.

7. The sealing assembly according to claim 1, characterized in that: The dimension of the second sealing member along the thickness direction of the sealing assembly is 5-10 mm.

8. The sealing assembly according to claim 1, characterized in that The dimension of the second sealing member along the second direction is 5-10 mm.

9. The sealing assembly according to claim 1, characterized in that: The first sealing member has a through hole, and the through hole penetrates the first sealing member along the thickness direction of the sealing assembly, and at least two of the through holes are spaced apart in sequence along the first direction.

10. A battery pack, characterized in that: The battery pack comprises a sealing assembly according to any one of claims 1-9.

11. The battery pack according to claim 10, characterized in that: The sealing assembly is configured as a ring extending in a circumferential direction of the battery pack, and the second sealing member is disposed inside the first sealing member.

12. The battery pack according to claim 11, characterized in that: The battery pack comprises an upper cover and a tray, and the sealing assembly is arranged between the pressing surfaces of the upper cover and the tray.

13. The battery pack according to claim 10, characterized in that: The battery pack includes a resistance detector for monitoring the resistance of the second sealing member.

14. An electrical device, characterized in that: The electrical equipment comprises a battery pack according to any one of claims 10-13.

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