A binder and a battery pack

Abstract

The application discloses a binder and a battery pack. The binder comprises a binder body and a reinforcing flange. The binder body is used to enhance the strength of the first flange. The binder body is attached to the first flange and connected to the first flange. The reinforcing flange is used to enhance the strength of the binder body. The reinforcing flange is arranged on at least one side of the plane where the binder body is located. Optionally, the reinforcing flange is connected to the position where the binder body protrudes from the first flange, so as to reduce the deformation of the binder body along the length direction of the binder body. The binder disclosed by the application is installed at the position corresponding to the weak sealing position of the battery pack on the first flange, so as to reduce the deformation of the weak sealing position of the battery pack, improve the sealing performance of the battery pack, and reduce the risk of sealing failure of the power battery under specific working conditions, such as water immersion or thermal runaway.

Description

Technical Field

[0001] This application relates to the field of battery equipment technology, and in particular to a pressure strip and a battery pack. Background Technology

[0002] As a core component of electric vehicles, the safety, reliability, and lifespan of the power battery depend on its sealing. The battery pack is the outer shell of the power battery. If the battery pack fails to seal, it can lead to serious consequences such as short circuits caused by air or water leakage, or thermal runaway causing fires outside the pack.

[0003] Therefore, how to improve the sealing performance of battery packs to ensure the safety, reliability, and service life of power batteries has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This application proposes a sealing strip to improve the sealing performance of the battery pack and ensure the safety, reliability, and service life of the power battery. This application also provides a battery pack.

[0005] To achieve the above objectives, this application provides a pressing strip, comprising: A pressing strip body that can fit against the first flange of the battery pack cover, the pressing strip body being fixedly connected to the first flange to enhance the strength of the first flange; A reinforcing flange is provided on at least one side of the plane where the edge pressing strip body is located. The reinforcing flange is connected to the portion of the edge pressing strip body that extends out of the first flange. The reinforcing flange is used to enhance the strength of the edge pressing strip body.

[0006] Preferably, in the above-mentioned edge pressing strip, the edge pressing strip body and the reinforcing flange are integrally formed.

[0007] Preferably, in the above-mentioned pressing strip, the pressing strip body is fixedly connected to the first flange by bolts.

[0008] Preferably, in the above-mentioned pressing strip, the first end of the pressing strip body along the length direction of the first flange is an inclined surface; The bevels of the two pressing strip bodies with the bevels are fitted together to form a structure that adapts to the corner shape of the first flange; The length direction of the first flange is the direction in which the first flange extends along the outer edge of the upper cover.

[0009] Preferably, in the above-mentioned pressing strip, the width of the pressing strip body is greater than the width of the first flange; The width of the pressing strip body is the dimension of the pressing strip body along the length direction perpendicular to the first flange, and the width of the first flange is the dimension of the first flange along the length direction perpendicular to the first flange.

[0010] Preferably, in the above-mentioned edge pressing strip, the width of the reinforcing flange is less than or equal to the width of the edge pressing strip body.

[0011] Preferably, in the above-mentioned edge banding strip, the width of the reinforcing flange is 3mm to 7mm.

[0012] Preferably, in the above-mentioned pressing strip, along the length direction of the first flange, the length of the pressing strip body is greater than or equal to the length of the reinforcing flange.

[0013] Preferably, in the above-mentioned edge pressing strip, the edge pressing strip includes at least one of metal, plastic, EPDM rubber and silicone.

[0014] Secondly, this application discloses a battery pack, including a top cover, a tray, and a pressing strip; The tray includes an open end, and the top cover is used to close the open end, the top cover and the tray forming a battery compartment; The open end includes a second flange, and the upper cover includes a first flange corresponding to the position of the second flange, and the first flange is connected to the second flange. The edge pressing strip is provided on the side of the first flange away from the second flange, and the edge pressing strip is the edge pressing strip described in any of the above schemes.

[0015] The edge-pressing strip provided in this application includes an edge-pressing strip body and a reinforcing flange. The edge-pressing strip body is used to enhance the strength of the first flange, and the edge-pressing strip body is attached to and connected to the first flange. The reinforcing flange is used to enhance the strength of the edge-pressing strip body, and the reinforcing flange is disposed on at least one side of the plane where the edge-pressing strip body is located. Optionally, the reinforcing flange is connected to the position where the edge-pressing strip body extends beyond the first flange to reduce the deformation of the edge-pressing strip body along its own length. The edge-pressing strip disclosed in this application is installed on the first flange at the weak sealing position of the battery pack to reduce the deformation of the weak sealing position of the battery pack, improve the sealing performance of the battery pack, and reduce the risk of sealing failure of the power battery under specific operating conditions such as water immersion or thermal runaway.

[0016] This application also provides a battery pack, including a top cover, a tray, and a pressing strip. The tray includes an open end, and the top cover is used to close the open end, with the top cover and the tray forming a battery compartment. The open end includes a second flange, and the top cover includes a first flange corresponding to the position of the second flange, with the first flange connected to the second flange. A pressing strip is provided on the side of the first flange away from the second flange, and the pressing strip is the pressing strip described in any of the above-mentioned solutions. Since the pressing strip has the above-mentioned technical effects, the power battery with this pressing strip also has the same technical effects, which will not be elaborated further here. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort, and this application can be applied to other similar scenarios based on the provided drawings. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0018] Figure 1 This is a schematic diagram of the structure of the power battery provided in the embodiments of this application; Figure 2 This is a top view of the power battery provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the power battery (without a top cover) provided in an embodiment of this application; Figure 4 This is a schematic diagram of the edge pressing strip provided in an embodiment of this application; Figure 5 This is a front view of the edge pressing strip provided in the embodiment of this application; Figure 6 This is a schematic diagram of the irregular edge pressing strip provided in the embodiments of this application.

[0019] in: 1-Top cover; 11-First flange; 2-Edge strip body; 3-Tray; 4-Reinforced flange. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. The described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0021] It should be noted that, for ease of description, only the parts relevant to the application are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0022] It should be understood that the terms "system," "apparatus," "unit," and / or "module" used in this application are a method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0023] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0024] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0025] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0026] like Figure 1 and Figure 2 As shown, the battery pack includes a top cover 1 and a tray 3. The tray 3 has a storage space. One end of the tray 3 is an open end. The top cover 1 is located at the open end and seals the open end. The top cover 1 and the tray 3 form a battery compartment.

[0027] With the advancement of technology, there is a growing demand for lightweight power batteries. To meet this demand, the top cover 1 of the power battery pack is made of materials with lower density and thinner thickness. However, the strength of the top cover 1 is also weakened accordingly, making it prone to deformation under stress. This affects the sealing performance between the top cover 1 and the battery pack tray 3, and may lead to sealing failure under specific conditions such as water immersion or thermal runaway.

[0028] like Figure 3 As shown, the open end of the tray 3 includes a second flange, and the upper cover 1 includes a first flange 11 corresponding to the position of the second flange. After the upper cover 1 is fastened to the open end of the tray 3, the first flange 11 and the second flange are fitted together and connected, thereby fixing the upper cover 1 to the tray 3. Both the first flange 11 and the second flange are located outside the battery compartment formed by the upper cover 1 and the tray 3, and do not occupy the space of the battery compartment.

[0029] Firstly, this application discloses a pressing strip. Figure 4 This is a schematic diagram of the structure of the edge pressing strip disclosed in this application. The edge pressing strip includes an edge pressing strip body 2 and a reinforcing flange 4.

[0030] The edge pressing strip body 2 is used to enhance the strength of the first flange 11. The edge pressing strip body 2 is located on the side of the first flange 11 away from the second flange. The edge pressing strip body 2 is in contact with the surface of the first flange 11 and is connected to the first flange 11.

[0031] Optionally, the pressing strip body 2 shall have at least two sides parallel to the first flange 11 treated with electrophoretic paint or other anti-corrosion treatment to prevent corrosion and short circuits.

[0032] The edge pressing strip body 2 is fitted to the first flange 11; in other words, the edge pressing strip body 2 and the first flange 11 fitted to it are matched in position and shape. Specifically, when the position of the edge pressing strip body 2 corresponding to the first flange 11 is planar, the edge pressing strip body 2 has a flat structure; when the position of the edge pressing strip body 2 corresponding to the first flange 11 is non-planar, the shape of the edge pressing strip body 2 is matched with the shape of the non-planar position, such as... Figure 6 As shown in the figure, the pressing strip body 2 includes a first plane and a second plane that are at an angle to each other. Reinforcing flanges are respectively provided on the first plane and the second plane, and the reinforcing flanges of the first plane and the second plane are not connected.

[0033] The edge pressing strip body 2 has a certain length and a certain width. Specifically, the length direction of the edge pressing strip body 2 is consistent with the length direction of the first flange 11, and the width direction of the edge pressing strip body 2 is perpendicular to the length direction of the first flange 11. The length direction of the first flange 11 is the direction in which the first flange 11 extends along the outer edge of the upper cover 1. The edge pressing strip body 2 extends along the plane where the first flange 11 is located toward the edge of the first flange 11. The edge pressing strip body 2 can extend beyond the first flange 11, or it can extend at least to the edge of the first flange 11.

[0034] Optionally, the length and width of the pressure strip body 2 can be set according to the power battery exhaust volume and exhaust temperature.

[0035] The reinforcing flange 4 is used to enhance the strength of the edge pressing strip body 2. The reinforcing flange 4 is connected to the edge pressing strip body 2. The reinforcing flange 4 has a certain length and a certain width. The length direction of the reinforcing flange 4 is consistent with the length direction of the first flange 11, and the width direction of the reinforcing flange 4 is perpendicular to the length direction of the first flange 11. That is, the length direction of the reinforcing flange 4 is consistent with the length direction of the edge pressing strip body 2, and the width direction of the reinforcing flange 4 is consistent with the width direction of the edge pressing strip body 2.

[0036] Optionally, the length and width of the pressure strip body 2 can be set according to the power battery exhaust volume and exhaust temperature.

[0037] The reinforcing flange 4 is provided on at least one side of the plane where the pressing strip body 2 is located. The reinforcing flange 4 is connected to the position where the pressing strip body 2 extends out of the first flange 11. Optionally, the reinforcing flange 4 is connected to the position of the pressing strip body 2 corresponding to the edge of the first flange 11, so as to reduce the deformation of the pressing strip body 2 along its own length direction.

[0038] In some embodiments, the reinforcing flange 4 is located on the side of the pressing strip body 2 close to the tray 3. The reinforcing flange 4 extends from the edge of the pressing strip body 2 corresponding to the first flange 11 toward the tray 3, and the pressing strip is L-shaped in general. In some embodiments, the reinforcing flange 4 is located on the side of the pressing strip body 2 away from the tray 3. The reinforcing flange 4 extends from the edge of the pressing strip body 2 corresponding to the first flange 11 in a direction away from the tray 3, and the pressing strip is L-shaped as a whole.

[0039] In some embodiments, the reinforcing flange 4 is located on the side of the pressing strip body 2 away from the tray 3, and the reinforcing flange 4 is located on the side of the pressing strip body 2 close to the tray 3, and the pressing strip is T-shaped overall.

[0040] There is an angle between the surface where the reinforcing flange 4 is located and the surface where the pressing strip body 2 is located. Optionally, the angle between the reinforcing flange 4 and the pressing strip body 2 is 90°~130°.

[0041] Along the width direction of the reinforcing flange 4, the reinforcing flange 4 can be a plane, a curved surface, or a combination of a plane and a curved surface.

[0042] In the embodiment where the reinforced flange 4 includes a curved surface, the convex side of the curved surface can face the upper cover 1 or face away from the upper cover 1.

[0043] The edge strip disclosed in this application is installed at the weak sealing position of the battery pack corresponding to the first flange 11, so as to reduce the deformation of the weak sealing position of the battery pack corresponding to the first flange 11, improve the sealing performance of the power battery, and reduce the risk of sealing failure of the power battery under specific working conditions such as water immersion or thermal runaway.

[0044] This solution allows for the installation of edge strips only at weak points in the battery pack's seal, replacing the circumferential protection method used in related technologies. This reduces the cost of enhancing the battery pack's seal and avoids over-protection, while also meeting the need for lightweight power batteries.

[0045] The edge-pressing strip disclosed in this application includes an edge-pressing strip body 2 and a reinforcing flange 4. The reinforcing flange 4 enhances the strength of the edge-pressing strip body 2. While meeting the required strength of the edge-pressing strip, the thickness of the edge-pressing strip body 2 can be appropriately reduced. In related technologies, edge-pressing strips are made of metal materials (such as steel or aluminum alloy) with a thickness of 1.5mm to 2mm. In this solution, the thickness of the edge-pressing strip body 2 can be reduced to 0.5mm to 1.5mm, and the length is 150mm to 200mm.

[0046] Optionally, the thickness of the pressing strip body 2 and the reinforcing flange 4 are equal.

[0047] There are multiple ways to connect the edge pressing strip body 2 and the reinforcing flange 4.

[0048] In some embodiments, the pressing strip body 2 and the reinforcing flange 4 are integrally formed. Optionally, integral forming includes stamping, bending, extrusion or bending.

[0049] In embodiments where the edge band is formed by stamping or bending, the edge band is made of at least one of stainless steel, aluminum alloy and galvanized steel, which has the advantages of high strength, corrosion resistance and high temperature resistance.

[0050] In embodiments where the edge banding is formed by extrusion or bending, the edge banding is made of plastic or elastic material.

[0051] In embodiments where the edge banding strip is made of plastic material, the plastic material is polyvinyl chloride (PVC), ABS resin (Acrylonitrile Butadiene Styrene plastic, ABS), or polypropylene (PP), which has the advantages of low cost and easy processing.

[0052] In embodiments where the edge banding strip is made of an elastic material, the elastic material is ethylene propylene diene monomer (EPDM rubber) or silicone, which has the advantages of high elasticity, aging resistance and good sealing performance.

[0053] In some embodiments, the pressing strip body 2 is welded to the reinforcing flange 4.

[0054] In embodiments where the edge band is welded, the edge band is made of at least one material selected from stainless steel, aluminum alloy, and galvanized steel.

[0055] The edge strip body 2 and the reinforcing flange 4 can also be connected by bolts, rivets or clips.

[0056] The connection method between the pressing strip body 2 and the reinforcing flange 4 is not limited to the above embodiment. Other forms that can achieve a fixed connection between the pressing strip body 2 and the reinforcing flange 4 are also within the protection scope of this application.

[0057] The edge banding strip can also be made of composite materials. Optionally, the edge banding strip can be made of rubber-metal composite or plastic fiber composite, etc., and can be co-extruded or composite molded to combine the advantages of different materials.

[0058] In the above embodiments, the pressing strip body 2 and the reinforcing flange 4 are made of the same material. In other embodiments, the pressing strip body 2 and the reinforcing flange 4 may be made of different materials. Optionally, the strength of the pressing strip body 2 is greater than or equal to the strength of the reinforcing flange 4.

[0059] When the edge pressing strip body 2 is connected to the first flange 11, an adhesive layer is provided on the side where the edge pressing strip body 2 and the first flange 11 are in contact. The adhesive layer is used to achieve the initial positioning of the edge pressing strip body 2 on the first flange 11, and then the edge pressing strip body 2 and the first flange 11 are connected. Optionally, the adhesive layer is double-sided adhesive.

[0060] In some embodiments, the pressing strip body 2 and the first flange 11 are fixedly connected by bolts. Optionally, a washer is provided on the side of the pressing strip body 2 away from the first flange 11, and the bolt passes through the washer to achieve a locking connection between the pressing strip body 2 and the first flange 11.

[0061] Specifically, the pressing strip body 2 has a first mounting hole, the first flange 11 has a second mounting hole, and the second flange has a third mounting hole. The first, second, and third mounting holes are corresponding and connected. After the bolt passes through the washer, the first mounting hole, the second mounting hole, and the third mounting hole in sequence, it is locked with the nut to lock the pressing strip body 2 to the first flange 11.

[0062] In some embodiments, the second mounting hole of the first flange 11 and the third mounting hole of the second flange may be separate mounting holes that correspond to and communicate with the position of the first mounting hole for connection with the pressing strip body 2.

[0063] In other embodiments, the second mounting hole and the third mounting hole can be mounting holes for bolting the first flange 11 and the second flange. The pressing strip body 2 uses the second mounting hole and the third mounting hole of the first flange 11 and the second flange to connect with the first flange 11, eliminating the need to open mounting holes on the first flange 11 and the second flange, thus reducing the impact on the strength of the first flange 11 and the second flange.

[0064] Optionally, the second mounting hole of the pressing strip body 2 is an elongated hole, and the direction of the elongated hole is consistent with the width direction of the pressing strip body 2, so that the pressing strip body 2 can be adjusted in position along its own width direction, reducing the interference between the reinforcing flange 4 and the first flange 11 caused by the hole opening error.

[0065] To further reduce the impact of the opening on the strength of the edge band body 2, optionally, the edge band body 2 is provided with a boss at the position corresponding to the first mounting hole, and the first mounting hole is opened in the boss.

[0066] The connection between the pressing strip body 2 and the first flange 11 can also be a welding connection. Specifically, after the pressing strip body 2 is initially positioned by the adhesive layer on the first flange 11, the pressing strip body 2 and the first flange 11 are welded together.

[0067] For ease of subsequent description, the two ends of the pressing strip body 2 along its length will be named the first end and the second end, respectively.

[0068] The corners of power batteries are generally weak points in terms of sealing.

[0069] When the edge pressing strip is used at the corner of the power battery, the first flange 11 includes two sides at the corner position, and edge pressing strips are respectively provided on the two sides. Optionally, the first end of the edge pressing strip body 2 corresponding to the corner is a slope, and the slope is inclined from the edge of the edge pressing strip body 2 away from the edge of the first flange 11 toward the edge of the first flange 11, and the inclination direction is toward the vertex of the corner.

[0070] The beveled surfaces of the first ends of the two edge strips corresponding to the corner fit together, and the sum of the inclination angles of the two beveled surfaces is equal to the angle of the corner. The two edge strips are spliced ​​together to form a structure with the same shape as the corner. When the corner is 90°, the inclination angle of the beveled surface is 45°.

[0071] In some embodiments, the angle of the corner of the first flange exceeds 90°, one of the pressing strip bodies 2 has a bevel at the first end corresponding to the corner, and the shape of the first end of the pressing strip body 2 is the same as the shape of the corner, and the other pressing strip body 2 has a flat surface at the first end corresponding to the corner, and the flat surface abuts against the long side of the pressing strip body 2 with the bevel.

[0072] The inclined surface can be a smooth inclined surface or an inclined surface including protrusions and / or grooves. In embodiments where the inclined surface includes protrusions and / or grooves, the protrusions and grooves of the inclined surfaces of two adjacent pressing strip bodies engage with each other, which to a certain extent plays a role in mutual limiting.

[0073] The second end of the edge strip body 2 can be a plane, a bevel, a serrated surface, an arc surface, or a combination of at least two of the following: a plane, a bevel, a serrated surface, and an arc surface.

[0074] When the edge pressing strip is used at the corner of the first flange 11 and the corner is 90°, optionally, one edge pressing strip body 2 is a flat surface at the first end corresponding to the corner, and the first end of the edge pressing strip is flush with the edge of the corner, and the other edge pressing strip is close to the first end of the corner and abuts against the long side of the edge pressing strip, and the two edge pressing strips form an L-shape.

[0075] To reduce the amount of material used for the edge pressing strip, the width of the edge pressing strip body 2 does not exceed the width of the first flange 11. Optionally, the width of the edge pressing strip body 2 is equal to the width of the first flange 11, so that the edge pressing strip body 2 does not extend too far beyond the first flange 11.

[0076] The width of the reinforcing flange 4 is less than or equal to the width of the pressing strip body 2. Optionally, the width of the reinforcing flange 4 is less than the width of the pressing strip body 2. While ensuring the strength of the pressing strip body 2, the width of the reinforcing flange 4 is reduced to reduce the mass of the pressing strip, meet the requirements for lightweight power batteries, and reduce costs.

[0077] Optionally, the width of the reinforced flange 4 is 3mm to 7mm.

[0078] To further enhance the strength of the edge banding strip, the edge of the reinforced flange 4, which is away from the second flange, has an arc-shaped rolled edge, which can be rolled inward or outward.

[0079] Optionally, the reinforced flange 4 can be a rolled edge.

[0080] Along the length direction of the first flange 11, the length of the pressing strip body 2 is greater than or equal to the length of the reinforcing flange 4.

[0081] In an embodiment where the length of the edge pressing strip body 2 is equal to the length of the reinforcing flange 4, the edge pressing strip body 2 includes a reinforcing flange 4.

[0082] In embodiments where the length of the pressing strip body 2 is greater than the length of the reinforcing flange 4, the pressing strip body 2 may have only one reinforcing flange 4, or at least two reinforcing flanges 4 may be provided along the length direction of the pressing strip body 2, and adjacent reinforcing flanges 4 may not be connected.

[0083] To avoid stress concentration, optionally, the connection position between the pressing strip body 2 and the reinforcing flange 4 has a transition arc to achieve a smooth transition between the pressing strip body 2 and the reinforcing flange 4.

[0084] Secondly, this application also provides a battery pack, including a top cover 1, a tray 3, and a pressing strip.

[0085] Tray 3 includes an open end, and top cover 1 is used to close the open end. Top cover 1 and tray 3 form a battery compartment. The open end includes a second flange, and the upper cover 1 includes a first flange 11 corresponding to the position of the second flange, and the first flange 11 is connected to the second flange; A pressing strip is provided on the side of the first flange 11 away from the second flange, and the pressing strip is the pressing strip described in any of the above schemes.

[0086] Since the edge pressing strip has the above-mentioned technical effects, the power battery with the edge pressing strip also has the same technical effects, which will not be elaborated here.

[0087] To further enhance the strength of the first flange 11, optionally, a reinforcing rib is provided on the side of the pressing strip body 2 away from the first flange 11.

[0088] Optionally, the reinforcing ribs are provided along the length and / or width of the edge strip body 2.

[0089] In the event of thermal runaway, the high-temperature gas first impacts the upper cover 1. When the pressure inside the power battery reaches the opening pressure of the explosion-proof valve, the explosion-proof valve opens to release pressure.

[0090] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed, and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. The scope of this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described application concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A pressing strip, characterized in that, include: A pressing strip body (2) that can fit with the first flange (11) of the top cover (1) of the battery pack, the pressing strip body (2) being fixedly connected to the first flange (11) to enhance the strength of the first flange (11); A reinforcing flange (4) is provided on at least one side of the plane where the pressing strip body (2) is located. The reinforcing flange (4) is connected to the part of the pressing strip body (2) that extends out of the first flange (11). The reinforcing flange (4) is used to enhance the strength of the pressing strip body (2).

2. The edge pressing strip according to claim 1, characterized in that, The pressing strip body (2) and the reinforcing flange (4) are integrally formed.

3. The edge pressing strip according to claim 1, characterized in that, The pressing strip body (2) is fixedly connected to the first flange (11) by bolts.

4. The edge pressing strip according to claim 1, characterized in that, The first end of the pressing strip body (2) along the length direction of the first flange (11) is a slope; The bevels of the two pressing strip bodies (2) with the bevels are fitted together to form a structure that adapts to the corner shape of the first flange (11); The length direction of the first flange (11) is the direction in which the first flange (11) extends along the outer edge of the upper cover (1).

5. The edge-pressing strip according to any one of claims 1-4, characterized in that, The width of the pressing strip body (2) is greater than the width of the first flange (11); The width of the pressing strip body (2) is the dimension of the pressing strip body (2) along the length direction perpendicular to the first flange (11), and the width of the first flange (11) is the dimension of the first flange (11) along the length direction perpendicular to the first flange (11).

6. The edge-pressing strip according to any one of claims 1-4, characterized in that, The width of the reinforcing flange (4) is less than or equal to the width of the pressing strip body (2).

7. The edge pressing strip according to claim 6, characterized in that, The width of the reinforced flange (4) is 3mm to 7mm.

8. The edge-pressing strip according to any one of claims 1-4, characterized in that, Along the length direction of the first flange (11), the length of the pressing strip body (2) is greater than or equal to the length of the reinforcing flange (4).

9. The edge pressing strip according to claim 1, characterized in that, The edge-pressing strip includes at least one of metal, plastic, EPDM rubber, and silicone.

10. A battery pack, characterized in that, Includes a top cover (1), a tray (3), and edge strips; The tray (3) includes an open end, and the top cover (1) is used to close the open end. The top cover (1) and the tray (3) together form a battery compartment. The open end includes a second flange, and the upper cover (1) includes a first flange (11) corresponding to the position of the second flange, and the first flange (11) is connected to the second flange; The first flange (11) is provided with the pressing strip on the side away from the second flange, and the pressing strip is the pressing strip of any one of claims 1-9.

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