CN219591586U - Battery cover body, battery and power consumption device - Google Patents

Abstract

The utility model relates to a cover body of a battery, the battery and an electric device, wherein the cover body of the battery is used for being covered on a box body of the battery and enclosing an accommodating space for accommodating a battery monomer, and the cover body comprises a cover body, a flange part and a flanging part; the flange part is arranged around the cover body; the flanging part is connected to the edge of the flange part and turned over to one side of the flange part, which is away from the box body. The flange part of the cover body of the battery can improve the structural strength of the flange part, reduce the defect that the flange part deforms to cause airtight failure due to local deformation, and improve the structural stability of the cover body to a certain extent. Meanwhile, on the premise of not affecting the air tightness of the cover body, the pressing strip can be omitted, the structural strength of the flange part can be increased, and the defects that the integral incoming material is easy to fall off and the non-integral incoming material is increased in the process of adding the pressing strip to the cover body are overcome, so that the overall quality of the cover body is improved.

Description

Battery cover body, battery and power consumption device

Technical Field

The utility model relates to the technical field of battery production, in particular to a cover body of a battery, the battery and an electric device.

Background

Battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like. The battery cells may include cadmium-nickel battery cells, hydrogen-nickel battery cells, lithium ion battery cells, secondary alkaline zinc-manganese battery cells, and the like.

In the development of battery technology, how to improve the sealability of a battery is a technical problem to be solved in the battery technology.

Disclosure of Invention

The utility model provides a battery cover, a battery and an electric device, aiming at the technical problem that the tightness of the battery can be improved to a certain extent.

In a first aspect, the present utility model provides a cover for a battery, for covering a case body of the battery and enclosing an accommodating space for accommodating a battery cell, the cover including a cover body, a flange portion, and a flange portion; the flange part is arranged around the cover body; the flanging part is connected to the edge of the flange part and turned over to one side of the flange part, which is away from the box body.

The cover body of the battery comprises the cover body, the flange part and the flanging part, wherein the flange part is arranged around the cover body, the flanging part is connected to the edge of the flange part and is turned over to one side of the flange part, which is away from the case body, the flanging part can improve the structural strength of the flange part, reduce the defect that the flange part deforms to cause airtight failure due to local deformation, and improve the structural stability of the cover body to a certain extent. Meanwhile, on the premise of not affecting the air tightness of the cover body, the pressing strip can be omitted, the structural strength of the flange part can be increased, and the defects that the integral incoming material is easy to fall off and the non-integral incoming material is increased in the process of adding the pressing strip to the cover body are overcome, so that the overall quality of the cover body is improved.

According to one embodiment of the utility model, the flange portion comprises a bent portion and a plate body portion; the bending part extends from the edge of the flange part and is folded back towards the cover body; the plate body part is connected to one end of the bending part far away from the flange part and is positioned at one side of the flange part far away from the box body.

In these alternative embodiments, the structure of the flanging part is simplified, the flanging part and the flange part have higher connection strength, the flanging part and the flange part are not easy to fall off when impacted, the structural stability of the flange part can be enhanced, and the probability of deformation of the flange part is reduced.

According to one embodiment of the utility model, the plate body is parallel to the surface of the flange portion facing the plate body.

In these alternative embodiments, the connection area between the burring portion and the flange portion can be increased, the connection strength can be improved, and the structural stability of the flange portion can be further enhanced.

According to one embodiment of the utility model, the plate body is arranged at a distance from the cover body.

In these alternative embodiments, the plate body and the cover body are arranged at intervals, so that the weak part of the flange part can be effectively enhanced, the plate body can be protected from external impact force, and the probability of deformation of the cover body is reduced.

According to one embodiment of the utility model, the thickness of the plate body and the flange portion are equal.

In these alternative embodiments, the thickness of the plate body and the flange portion are equal on the premise of achieving the structural strength of the reinforced flange portion, so that the overall weight of the cover body can be reduced, the difficulty in transportation or use of the cover body is reduced, and the integral feeding of the plate body and the flange portion can be realized, so that the cost is reduced.

According to one embodiment of the utility model, the cover further comprises an adhesive member disposed between and connected to the flange portion and the plate body portion.

In these alternative embodiments, the stability of the connection of the flange portion and the plate body portion is further increased by providing an adhesive.

According to one embodiment of the utility model, the flange portion and the cuff portion are integrally formed.

In these alternative embodiments, the flange portion and the flange portion are integrally provided, so that the flange portion and the flange portion have high connection strength, are not easy to fall off when being impacted, and are easy to manufacture.

According to one embodiment of the present utility model, the cover body is provided with a through hole penetrating the flange portion and the burring portion in the thickness direction of the flange portion.

In these alternative embodiments, the cover is provided with a through hole for cooperating with the locking member to connect the box body with the cover, and the through hole is easy to manufacture, reducing the impact on the overall structure of the cover. The through holes are provided in the flange portion and the burring portion, so that stress concentration can be dispersed.

According to an embodiment of the present utility model, the burring is plural, and the plural burring is provided along the circumferential direction of the lid body.

In these alternative embodiments, the cover includes a plurality of flange portions that are respectively disposed in the weakened areas of the flange portions, which serve to strengthen and improve the deformation of the flange portions, and which also reduce the overall weight of the cover.

According to one embodiment of the utility model, at least one flange portion is provided at a corner portion of the cover.

In these alternative embodiments, the arrangement is such that the flange portion is provided at a weak position of the cover body, reducing the probability of deformation of the flange portion.

According to one embodiment of the utility model, the flange portion is provided with a recess, and the flange portion extends from the bottom of the recess and is folded over.

In these alternative embodiments, the arrangement is such that the flange portion is provided at a weak position of the cover body, reducing the probability of deformation of the flange portion.

In a second aspect, the utility model provides a battery, the battery comprises a case body, a cover body and a battery unit, wherein the cover body covers the case body and encloses an accommodating space; the battery cell is accommodated in the accommodating space.

The battery provided by the utility model comprises the case body, the cover body and the battery unit, and the flange part is arranged at the edge of the flange part, so that the structural strength of the flange part can be improved, the deformation of the flange part is reduced, the integral strength of the cover body is improved, and the connection stability of the case body and the electric cover body is improved, so that the stability and the reliability of the battery can be further improved.

In a third aspect, the utility model provides an electrical device comprising a battery according to the foregoing, the battery being for providing electrical energy.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the utility model;

fig. 2 is an exploded view of a battery according to some embodiments of the present utility model;

fig. 3 is a schematic exploded view of a battery cell according to some embodiments of the present utility model;

fig. 4 is a schematic structural view of a cover of a battery according to some embodiments of the present utility model;

fig. 5 is an enlarged structural schematic view of the cover at a of the battery of some embodiments shown in fig. 4;

fig. 6 is a schematic view illustrating a partial structure of a cover of a battery according to some embodiments of the present utility model;

fig. 7 is an enlarged structural schematic view of the cover at b of the battery of some embodiments shown in fig. 4.

The figures are not necessarily to scale.

Reference numerals illustrate:

1000. a vehicle;

100. a battery; 200. a controller; 300. a motor;

10. a battery cell; 20. a cover body; 30. a case body;

101. a housing; 102. an end cap; 103. an electrode assembly; 104. an electrode terminal; 105. a pressure release mechanism;

21. a cover body;

22. a flange portion; 221. a groove;

23. a burring part; 231. a bending part; 232. a plate body portion;

24. a bonding member;

25. and a through hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present utility model is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present utility model, the character "/" generally indicates that the front and rear related objects are an or relationship.

In the embodiments of the present utility model, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the utility model shown in the drawings, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are merely illustrative and should not be construed as limiting the utility model in any way.

The term "plurality" as used herein refers to two or more (including two).

In the present utility model, the battery cells may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, which is not limited in the embodiment of the present utility model. The battery cell may be in a cylindrical shape, a flat shape, a rectangular parallelepiped shape, or other shapes, which is not limited in this embodiment of the utility model. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft package battery cell are not limited in this embodiment.

Reference to a battery in accordance with an embodiment of the present utility model refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present utility model may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case can reduce to some extent that liquid or other foreign matter affects the charge or discharge of the battery cells.

The battery includes box and battery monomer, and the box can include lid and case body, and lid and case body prescribe a limit jointly to be used for holding battery monomer accommodation space.

In some embodiments, a pressing strip is generally added on the cover body to prevent poor sealing of the battery caused by deformation and warping of the cover body. However, the connection between the bead and the cover has the following drawbacks: under the condition that the pressing strip and the cover body are integrally supplied, the pressing strip and the cover body are required to be connected in an adhesive mode, the connection area of the pressing strip and the cover body is small, the falling risk of the pressing strip is large, and poor quality of the cover body is easily caused; under the condition that the pressing strip and the cover body are not integrally fed, the pressing strip and the cover body are required to be assembled in a production line, and the assembly procedure of the production line is increased, so that automatic production is difficult to realize. The statements made above merely serve to provide background information related to the present disclosure and may not necessarily constitute prior art.

In view of the above problems, the inventors have made intensive studies and have proposed a battery cover in which a flange portion is connected to an edge of a flange portion and folded to a side of the flange portion facing away from a case body, the flange portion being capable of improving structural strength of the flange portion, reducing deformation of the flange portion, causing a defect of causing airtight failure due to local deformation, and improving structural stability of the cover to some extent.

The battery may be applied to vehicles, cellular phones, portable devices, notebook computers, ships, spacecraft, electric toys, electric tools, and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present utility model as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the utility model. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present utility model, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present utility model. The battery 100 includes a case and a battery cell 10. In some embodiments, the case may include a cover 20 and a case body 30, the cover 20 and the case body 30 being covered with each other, the cover 20 and the case body 30 together defining a receiving space for receiving the battery cell 10. The case body 30 may have a hollow structure with one end opened, the cover 20 may have a plate-shaped structure, and the cover 20 covers the opening side of the case body 30, so that the cover 20 and the case body 30 together define an accommodating space; the lid 20 and the case body 30 may be hollow structures each having one side open, and the opening side of the lid 20 may be closed to the opening side of the case body 30. Of course, the case formed by the cover 20 and the case body 30 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

Assuming that the cover 20 is covered on top of the case body 30, the cover 20 may also be referred to as an upper case cover, and the case body 30 may also be referred to as a lower case.

In the battery 100, the number of the battery cells 10 may be plural, and the plural battery cells 10 may be connected in series, parallel, or series-parallel, and series-parallel refers to both of the plural battery cells 10 being connected in series and parallel. The plurality of battery cells 10 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 10 is accommodated in the box body; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 10 in series or parallel or series-parallel connection, and a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in a case. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 10.

Each battery cell 10 may be a lithium ion battery cell, a lithium sulfur battery cell, a sodium ion battery cell, or a magnesium ion battery cell, but is not limited thereto. The battery cell 10 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, fig. 3 is an exploded view of a battery cell 10 according to some embodiments of the present utility model. The battery cell 10 refers to the smallest unit constituting the battery. As shown in fig. 3, the battery cell 10 includes a case 101, an end cap 102, an electrode assembly 103, an electrode terminal 104, and other functional components.

The end cap 102 refers to a member that is covered at the opening of the case 101 to isolate the internal environment of the battery cell 10 from the external environment. Without limitation, the shape of the end cap 102 may be adapted to the shape of the housing 101 to fit the housing 101. Alternatively, the end cover 102 may be made of a material having a certain hardness and strength (such as an aluminum alloy), so that the end cover 102 is not easy to deform when being extruded and collided, so that the battery cell 10 can have a higher structural strength, and the reliability can be improved. The end cap 102 may be provided with functional components such as electrode terminals 104. The electrode terminals 104 may be used to electrically connect with the electrode assembly 103 for outputting or inputting electric power of the battery cell 10. In some embodiments, the end cap 102 may also be provided with a pressure relief mechanism 105 for relieving the internal pressure when the internal pressure or temperature of the battery cell 10 reaches a threshold. The end cap 102 may also be made of a variety of materials including, but not limited to, copper, iron, aluminum, stainless steel, aluminum alloys, plastics, etc. In some embodiments, an insulating member may also be provided on the inside of the end cap 102, which may be used to isolate electrical connection components within the housing 101 from the end cap 102 to reduce the risk of short circuits. By way of example, the insulating member may be plastic, rubber, or the like.

The case 101 is an assembly for mating with the end cap 102 to form an internal environment of the battery cell 10, wherein the formed internal environment may be used to house the electrode assembly 103, electrolyte, and other components. The case 101 and the end cap 102 may be separate components, and an opening may be provided in the case 101, and the interior of the battery cell 10 may be formed by covering the opening with the end cap 102 at the opening. The end cap 102 and the housing 101 may be integrated, and specifically, the end cap 102 and the housing 101 may form a common connection surface before other components are put into the housing, and when the interior of the housing 101 needs to be sealed, the end cap 102 is covered with the housing 101. The housing 101 may be of various shapes and various sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 101 may be determined according to the specific shape and size of the electrode assembly 103. The material of the housing 101 may be various, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

The electrode assembly 103 is a component in which electrochemical reactions occur in the battery cell 10. One or more electrode assemblies 103 may be contained within the housing 101. The electrode assembly 103 is mainly formed by winding a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode sheets having active material constitute the main body of the electrode assembly 103, and the portions of the positive and negative electrode sheets having no active material constitute the tabs, respectively. The positive electrode tab and the negative electrode tab can be located at one end of the main body together or located at two ends of the main body respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected to the electrode terminal 104 to form a current loop.

The positive pole piece and the negative pole piece are wound around a winding axis to form a winding structure. In the winding structure, the positive electrode sheet and the negative electrode sheet are overlapped in a direction perpendicular to the winding axis. In other words, the positive electrode sheet and the negative electrode sheet are wound in a plurality of turns along the winding direction, which is the direction in which the positive electrode sheet and the negative electrode sheet are wound circumferentially from inside to outside. After the winding structure is unwound, the positive electrode sheet and the negative electrode sheet are substantially in the shape of elongated strips.

Referring to fig. 4 in combination, fig. 4 is a schematic structural view of a cover of a battery according to some embodiments of the present utility model.

As shown in fig. 4, the cover 20 of the battery provided by the utility model is used for being covered on the box body 30 of the battery and enclosing an accommodating space for accommodating the battery cell 10, and the cover 20 comprises a cover body 21, a flange part 22 and a flanging part 23. The flange portion 22 is provided around the cover body 21. The burring 23 is connected to the edge of the flange 22 and turned over to the side of the flange 22 facing away from the tank body 30.

The cover 20 and the case body 30 are mutually covered to define a receiving space for receiving the battery cell 10, wherein the case body 30 may be a hollow structure with one end open, and the cover body 21 may be a hollow structure with one side open. The lid body 20 includes a lid body 21, a flange portion 22, and a burring portion 23.

In the embodiment of the present utility model, the cover body 21 may have various shapes, regular, such as rectangular parallelepiped, square, cylindrical, etc., and may have other irregular shapes, and the shape of the cover body 21 should not affect the accommodation of the battery cells 10. The cover body 21 may be made of various materials, such as steel, aluminum alloy, or other composite materials, and optionally one of the materials is carbon fiber composite material, which has advantages of light weight, high strength, and high impact resistance. The peripheral edge of the lid body 21 is provided with a flange portion 22 for connection and closure in cooperation with the flange portion on the opening side of the box body 30.

In the embodiment of the present utility model, the flange 22 can provide a bonding surface and a connection position for the connection of the cover body 21 and the case body 30, specifically, the flange 22 extends outward from the edge of the cover body 21 in the horizontal direction to form a cover plane with the case body 30, and the flange on the opening side of the case body 30 is also in the same kind of arrangement, so that the connection tightness of the cover body 21 and the case body 30 is improved without compressing the receiving space of the battery cell 10 inside.

In the embodiment of the present utility model, the burring 23 is connected to the edge of the flange 22 and turned toward the side of the flange 22 facing away from the box body 30, and the portion of the burring 23 extending in the direction of the cover body 21 is connected to the side of the flange 22 facing away from the box body 30. Therefore, the flange portion 22 and the burring portion 23 can be fixedly connected without using a fastener such as a jig. The embodiment of the utility model can reduce the number of parts of the cover 20, and the flanging part 23 only needs to be folded to one side of the flange part 22 away from the box body 30, so that the operation is simple.

Alternatively, the flange portion 22 is the same material as the burring portion 23.

In the embodiment of the present utility model, the burring 23 is connected to the edge of the flange 22, wherein the edge of the flange 22 may be partially provided with the burring 23, or the edge of the flange 22 may be entirely provided with the burring 23. In the case where the flange portion 22 may be provided with the burring portion 23 at a portion thereof, the burring portion 23 is provided at a cut-out portion, a corner portion, or the like of the flange portion 22.

Illustratively, the reserved material is folded to the side of the flange 22 away from the box body 30 to form the flange 23, so that the cover 20 is at least partially thickened to locally strengthen the flange 22.

The cover body 20 of the battery provided by the utility model comprises the cover body 21, the flange part 22 and the flanging part 23, wherein the flange part 22 is arranged around the cover body 21, the flanging part 23 is connected to the edge of the flange part 22 and is turned over to one side of the flange part 22, which is away from the box body 30, the flanging part 23 can improve the structural strength of the flange part 22, reduce the defect that the flange part 22 deforms to cause airtight failure due to local deformation, and improve the structural stability of the cover body 20 to a certain extent. Meanwhile, on the premise of not affecting the air tightness of the cover body 20, the pressing bar can be eliminated, the structural strength of the flange part 22 can be increased, and the defects that the integral incoming material is easy to fall off and the non-integral incoming material is increased when the pressing bar is added to the cover body 20 are overcome, so that the overall quality of the cover body 20 is improved.

Referring to fig. 5 in combination, fig. 5 is an enlarged schematic view of the cover at a of the battery of some embodiments shown in fig. 4.

According to one embodiment of the present utility model, as shown in fig. 4 and 5, the burring 23 includes a bent portion 231 and a plate body portion 232. The bending portion 231 extends from the edge of the flange portion 22 and is folded back toward the cover body 21. The plate 232 is connected to an end of the bending portion 231 away from the flange 22 and is located at a side of the flange 22 away from the case body 30.

In the embodiment of the present utility model, the flanging portion 23 includes a bending portion 231 and a plate portion 232, the bending portion 231 has a bending section and a first end and a second end at two ends, the first end is connected to the edge of the flange portion 22, the bending section is folded back toward the cover body 21, the second end is connected to the plate portion 232, the plate portion 232 extends toward the cover body 21, and one side of the plate portion 232 is attached to one side of the flange portion 22 away from the box body 30.

In an embodiment of the utility model, the orthographic projection of the plate body 232 on the flange portion 22 is located within the flange portion 22. By this arrangement, the plate body 232 can cover a partial region of the flange 22, and structural strength of the flange 22 is increased.

Alternatively, the flange portion 23 is connected to a partial region of the flange portion 22, and it is understood that the orthographic projection of the plate body portion 232 on the flange portion 22 is smaller than the area of the flange portion 22. The burring 23 is appropriately reduced to reduce the overall weight of the cover 20 while satisfying the requirement of reducing the deformation of the flange 22.

Alternatively, the bending portion 231 is integrally formed with the plate body 232.

In these alternative embodiments, the arrangement simplifies the structure of the flange portion 23, and makes the flange portion 23 and the flange portion 22 have high connection strength, so that they are not easy to fall off when impacted, and the structural stability of the flange portion 22 can be enhanced, and the probability of deformation of the flange portion 22 can be reduced.

According to one embodiment of the present utility model, as shown in fig. 4 and 5, the plate body 232 is parallel to the surface of the flange portion 22 facing the plate body 232.

Alternatively, the flange portion 22 faces the surface of the plate body portion 232 and extends in the horizontal direction, that is, the plate body portion 232 extends in the horizontal direction, and the surface of the plate body portion 232 facing the flange portion 22 is fitted with the surface of the flange portion 22 facing the plate body portion 232.

In these alternative embodiments, the connection area between the burring part 23 and the flange part 22 can be increased, the connection strength can be improved, and the structural stability of the flange part 22 can be further enhanced.

According to one embodiment of the present utility model, as shown in fig. 4 and 5, the plate body 232 is spaced apart from the cover body 21.

In the embodiment of the present utility model, the plate 232 is located at a side of the flange 22 away from the case body 30 and spaced from the cover body 21, and the plate 232 is away from the cover body 21.

Illustratively, the plate body 232 is disposed at a distance from the cover body 21 in the width direction of the flange portion 22.

Alternatively, the distance between the plate body 232 and the cover body 21 is 1mm to 3mm in the width direction of the flange portion 22.

More alternatively, the spacing between the plate body 232 and the cover body 21 is 2mm in the width direction of the flange portion 22.

In these alternative embodiments, the plate body 232 is spaced from the cover body 21, so that not only the structural strength of the weak portion of the flange 22 can be effectively enhanced, but also the plate body 232 can be protected from external impact force, and the probability of deformation of the cover body 21 can be reduced.

According to one embodiment of the utility model, the thickness of the plate body 232 and the flange 22 are equal.

Specifically, a sheet metal material is reserved for the easily deformed area of the flange portion 22, the reserved sheet metal material is turned over to form a flanging portion 23 on one side of the flange portion 22 away from the box body 30, and the thicknesses of the plate body portion 232 and the flange portion 22 are equal.

In these alternative embodiments, the thickness of the plate 232 and the flange 22 are equal to each other on the premise of enhancing the structural strength of the flange 22, so that the overall weight of the cover 20 can be reduced, the difficulty in transportation or use can be reduced, and the plate 232 and the flange 22 can be integrally supplied, thereby reducing the cost.

Referring to fig. 6 in combination, fig. 6 is a schematic view illustrating a part of the structure of a cover of a battery according to some embodiments of the utility model.

According to one embodiment of the present utility model, as shown in fig. 4, 5 and 6, the cover 20 further includes an adhesive member 24, and the adhesive member 24 is disposed between the flange portion 22 and the plate body portion 232 and is connected to the flange portion 22 and the plate body portion 232.

In the embodiment of the present utility model, the cover 20 further includes an adhesive member 24, where the adhesive member 24 is disposed between a surface of the flange 22 facing the plate body 232 and a surface of the plate body 232 facing the flange 22, so as to adhere to the flange 22 and the plate body 232, and an orthographic projection of the adhesive member 24 on the flange 22 is located within an orthographic projection of the plate body 232 on the flange 22.

In the embodiment of the present utility model, the cover 20 includes one adhesive member 24 or a plurality of adhesive members 24, wherein the plurality of adhesive members 24 are disposed between the flange portion 22 and the plate body portion 232 at intervals along the circumferential side of the cover body 21.

Optionally, the adhesive 24 comprises a sealant layer.

In these alternative embodiments, the stability of the connection of the flange portion 22 and the plate body portion 232 is further increased by providing the adhesive 24.

According to one embodiment of the utility model, the flange portion 22 and the burring portion 23 are integrally formed.

Specifically, a sheet metal material is reserved in a deformation area of the flange portion 22, and the reserved sheet metal material is turned over to form a flanging portion 23 on one side of the flange portion 22 away from the box body 30, that is, the flange portion 22 and the flanging portion 23 are integrally formed.

In these alternative embodiments, the flange portion 22 and the flange portion 23 are integrally provided, so that the flange portion 22 and the flange portion 23 have high connection strength, are not easy to fall off when being impacted, and are easy to manufacture the cover 20.

Referring to fig. 7 in combination, fig. 7 is an enlarged schematic view of the cover at b of the battery of some embodiments shown in fig. 4.

According to one embodiment of the present utility model, as shown in fig. 4 and 7, the cover 20 is provided with a through hole 25, and the through hole 25 penetrates the flange portion 22 and the burring portion 23 in the thickness direction of the flange portion 22.

In the embodiment of the present utility model, the cover 20 is provided with the through hole 25, the through hole 25 includes a first through hole penetrating the flange portion 22 in the thickness direction of the flange portion 22, and a second through hole penetrating the plate body portion 232 in the thickness direction of the plate body portion 232, the first through hole communicating with the second through hole.

Illustratively, a sheet metal material is reserved for the easily deformed region of the flange portion 22, the reserved sheet metal material is turned over to a side of the flange portion 22 away from the box body 30 to form a flange portion 23, and then through holes 25 penetrating the flange portion 23 and the flange portion 22 are formed in the flange portion 23 and the flange portion 22.

In the embodiment of the present utility model, a locking member is provided in the through hole 25 to be engaged with the through hole 25 to connect the cover 20 with the case body 30.

In these alternative embodiments, the cover 20 is provided with a through hole 25, the through hole 25 is used to connect the box body 30 with the cover 20 in cooperation with the locking member, and the through hole 25 is easy to manufacture, reducing the influence on the overall structure of the cover 20. The through holes 25 are provided in the flange portion 22 and the burring portion 23, and can disperse stress concentration.

In some embodiments, the through holes 25 extend through the adhesive 24. Thus, the adhesive member 24 is provided between the flange portion 22 and the burring portion 23 on the peripheral side of the through hole 25, further increasing the connection stability of the flange portion 22 and the burring portion 23.

According to an embodiment of the present utility model, the burring 23 is plural, and the plural burring 23 is provided along the circumferential direction of the cover 20.

In the embodiment of the present utility model, the cover 20 includes a plurality of burring parts 23, the plurality of burring parts 23 being disposed along the circumferential direction of the cover 20, and the plurality of burring parts 23 being connected to the edge of the flange part 22, the plurality of burring parts 23 being spaced apart, wherein the burring parts 23 may be disposed at weak areas of the flange part 22, such as corners or cut-outs of the flange part 22, to increase the strength of a partial area of the flange part 22.

Alternatively, the burring parts 23 may be 2, 3, 4, 5, or the like in number, and may be arranged at intervals in the circumferential direction of the cover 20. Wherein, the plurality of flanging portions 23 may be equidistantly or non-equidistantly arranged along the circumferential direction of the cover 20. However, the number of the flange portions 23 in the circumferential direction of the lid body 20 is not excessive, and the manufacturing cost of the lid body 20 can be reduced, and the weight of the entire lid body 20 can be reduced.

In these alternative embodiments, the cover 20 includes a plurality of burring portions 23, which may be provided in the weak areas of the flange portion 22, respectively, to strengthen and improve the deformation of the flange portion 22, and to reduce the weight of the cover 20 as a whole.

According to one embodiment of the present utility model, at least one burring 23 is provided at a corner of the cover 20.

Specifically, the flange portion 22 is provided around the cover body 21, the flange portion 22 encloses to form a rectangular frame, and the burring portion 23 is provided at a corner of the flange portion 22.

In these alternative embodiments, the arrangement is such that the flange portion 23 is provided at a weak position of the cover 20, reducing deformation of the flange portion 22.

According to one embodiment of the utility model, the flange portion 22 is provided with a recess 221, and the burring 23 extends from the bottom of the recess 221 and is folded over.

In the embodiment of the present utility model, the structural strength of the groove 221 area of the outer edge of the flange portion 22 is lower than that of the other area of the flange portion 22, and belongs to the weak position of the flange portion 22, and the burring 23 extends from the bottom of the groove 221 and is folded to the side of the flange portion 22 facing away from the tank body 30.

In these alternative embodiments, the arrangement is such that the burring 23 is provided at a weak position of the cover 20, reducing the probability of deformation of the flange 22.

In a second aspect, the present utility model provides a battery, the battery includes a case body 30, a cover 20 and a battery cell 10 according to the foregoing battery, where the cover 20 covers the case body 30 and encloses a receiving space; the battery cell 10 is accommodated in the accommodation space.

The battery provided by the utility model comprises the case body 30, the cover body 20 and the battery cell 10, and the flange part 23 is arranged at the edge of the flange part 22, so that the structural strength of the flange part 22 can be improved, the deformation of the flange part 22 can be reduced, the overall strength of the cover body 20 can be improved, and the connection stability of the case body 30 and the electric cover body 20 can be improved, thereby further improving the stability and reliability of the battery.

In a third aspect, the utility model provides an electrical device comprising a battery according to the foregoing, the battery being for providing electrical energy.

According to some embodiments of the present utility model, referring to fig. 4 to 7, the present utility model provides a cover 20 of a battery, for covering a case body 30 of the battery and enclosing an accommodating space for accommodating a battery cell 10, the cover 20 including a cover body 21, a flange portion 22, and a plurality of burring portions 23, the plurality of burring portions 23 being disposed along a circumferential direction of the cover 20. The flange portion 22 is provided around the cover body 21. The flange portion 23 is connected to the edge of the flange portion 22 and turned over to a side of the flange portion 22 away from the box body 30, the flange portion 23 includes a bending portion 231 and a plate portion 232, the bending portion 231 extends from the edge of the flange portion 22 and is folded back toward the cover body 21, and the plate portion 232 is connected to one end of the bending portion 231 away from the flange portion 22 and is located at a side of the flange portion 22 away from the box body 30. At least one burring 23 is provided at a corner of the cover 20. The flange portion 22 is provided with a groove 221, and at least one burring portion 23 extends from the bottom of the groove 221 and turns over. The plate body 232 is parallel to the surface of the flange 22 facing the plate body 232, and the plate body 232 is spaced apart from the cover body 21. The thickness of the plate body 232 and the flange 22 are equal. The flange portion 22 and the burring portion 23 are integrally formed. The lid body 20 is provided with a through hole 25, and the through hole 25 penetrates the flange portion 22 and the burring portion 23 in the thickness direction of the flange portion 22.

In the battery cover 20 of the present utility model, the cover 20 includes the cover body 21, the flange 22 and the flange 23, the flange 22 is disposed around the cover body 21, the flange 23 is connected to the edge of the flange 22 and turned over to the side of the flange 22 away from the case body 30, the flange 23 can improve the structural strength of the flange 22, reduce the deformation of the flange 22, and cause the defect of airtight failure due to local deformation, and can improve the structural stability of the cover 20 to a certain extent. Meanwhile, on the premise of not affecting the air tightness of the cover body 20, the pressing bar can be eliminated, the structural strength of the flange part 22 can be increased, and the defects that the integral material of the pressing bar is easy to fall off and the non-integral material is increased in the process of locally increasing the pressing bar of the cover body 20 are overcome, so that the overall quality of the cover body 20 is improved.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (13)

1. A lid of battery for lid closes to the case body of battery and encloses into the accommodation space that is used for holding battery monomer, characterized in that, the lid includes:

a cover body;

a flange portion provided around the cover body; and

and the flanging part is connected with the edge of the flange part and is turned over to one side of the flange part, which is away from the box body.

2. The cover of claim 1, wherein the burring comprises:

a bending portion extending from an edge of the flange portion and folded back toward the cover body; and

the plate body part is connected to one end of the bending part far away from the flange part and is positioned at one side of the flange part far away from the box body.

3. The cover of claim 2, wherein the cover comprises a plurality of layers,

the plate body is parallel to a surface of the flange portion facing the plate body.

4. The cover of claim 2, wherein the cover comprises a plurality of layers,

the plate body and the cover body are arranged at intervals.

5. The cover of claim 2, wherein the cover comprises a plurality of layers,

the thickness of the plate body part is equal to that of the flange part.

6. The cover of claim 2, wherein the cover comprises a plurality of layers,

the cover body further comprises a bonding piece, wherein the bonding piece is arranged between the flange part and the plate body part and is connected with the flange part and the plate body part.

7. The cover of claim 1, wherein the cover comprises a plurality of layers,

the flange part and the flanging part are integrally formed.

8. The cover of claim 1, wherein the cover comprises a plurality of layers,

the cover body is provided with a through hole, and the through hole penetrates through the flange part and the flanging part along the thickness direction of the flange part.

9. The cover of claim 1, wherein the cover comprises a plurality of layers,

the flanging parts are arranged in a plurality, and the flanging parts are arranged along the circumferential direction of the cover body.

10. The cover of claim 9, wherein the cover comprises a plurality of layers,

at least one flanging part is arranged at the corner of the cover body.

11. The cover of claim 1, wherein the cover comprises a plurality of layers,

the flange part is provided with a groove, and the flanging part extends from the bottom of the groove and is folded.

12. A battery, comprising:

a case body;

the cover of a battery according to any one of claims 1 to 11, the cover closing the case body and enclosing an accommodation space; and

and the battery unit is accommodated in the accommodating space.

13. An electrical device comprising a battery as claimed in claim 12, said battery being arranged to provide electrical energy.