CN218182342U - Cover, battery box, battery and power consumption device - Google Patents

Abstract

The application provides a lid, battery box, battery and electric installation belongs to battery technical field. The cover includes a top wall, a side wall, and a rim portion. The side walls are connected to the top wall and the rim portion is connected to the side walls. The rim portion includes a first rim portion connected to the sidewall, a second rim portion, and a recess disposed between the first rim portion and the second rim portion.

Description

Cover, battery box, battery and power consumption device

Technical Field

The application relates to the technical field of batteries, in particular to a cover, a battery box, a battery and an electric device.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

The battery box of battery includes lid and box, and the peripheral part of lid is connected with the peripheral part of box, but at the lid in-process with the box is fixed, the peripheral part of lid is easy to be out of shape, leads to battery box sealing failure, influences the security performance of battery.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the technical problems occurring in the related art. Therefore, an object of the present application is to provide a cover, a battery box, a battery and an electric device, so as to solve the problems in the related art.

An embodiment of a first aspect of the present application provides a cover for a battery box, the cover comprising: a top wall; a side wall connected to the top wall; and an edge portion connected to the sidewall; wherein the edge portion includes a first edge portion, a second edge portion, and a recess disposed between the first edge portion and the second edge portion, the first edge portion being connected to the sidewall.

In the technical scheme of this application embodiment, the edge part is including setting up the concave part between first edge part and second edge part for the edge part has a recess, is not a dull and stereotyped structure, and the rigidity of the edge part that has certain shape can increase, makes when equipment box and lid, and lid non-deformable, thereby has guaranteed the leakproofness of battery box, avoids because the problem of the sealed inefficacy that the lid warp the cause.

In some embodiments, the first edge portion and the second edge portion are coplanar such that both the first edge portion and the second edge portion can be coupled to a peripheral edge portion of the case to form two sealing surfaces, further improving the sealing of the battery case.

In some embodiments, the first edge portion and the second edge portion are parallel to the top wall. On the one hand, the battery box is convenient to manufacture, and on the other hand, the cover is more attractive while the sealing performance of the battery box is improved.

In some embodiments, the recessed portion is recessed toward the top wall. Make the concave part be closer to the roof, and the concave part is located between first marginal portion and the second marginal portion, avoid the concave part to influence first marginal portion and second marginal portion and be connected with the peripheral part of box respectively.

In some embodiments, the bottom wall of the recess is planar, which facilitates manufacturing.

In some embodiments, the bottom wall of the recess is parallel to the top wall and/or the bottom wall of the recess is parallel to the first edge portion and the second edge portion. The bottom wall of the recess depends on the shape of the top wall or the first and second edge portions, making the shape of the lid more aesthetically pleasing.

In some embodiments, the bottom wall of the recess is provided with at least one fixing hole. The fixing hole enables the cover to be fixed with the box body through the concave portion, and stability of the cover is guaranteed.

In some embodiments, the fixation holes are located at an intermediate position of the bottom wall of the recess; alternatively, the fixing hole is located at a position closer to the second edge portion than the first edge portion of the bottom wall of the recess portion. The fixing hole is located in the middle of the bottom wall of the concave portion, a common arrangement mode is achieved, and manufacturing is convenient. The fixation holes are located closer to the second edge portion than to the first edge portion of the bottom wall of the recess, so that the recess formed by the recess has more space for arranging other components, e.g. the recess formed by the recess can be used for placing a sealing gasket.

Embodiments of the second aspect of the present application provide a battery case comprising the cover of any one of the above embodiments; and a box body; wherein the cover is detachably connected to a peripheral portion of the case through the edge portion. Because the edge of lid has a recess, and be not a dull and stereotyped structure, the rigidity that has the edge of certain shape can increase for when equipment box and lid, lid non-deformable, thereby guaranteed the leakproofness of battery box, avoided because the sealed problem of losing efficacy that the lid warp the cause.

In some embodiments, the battery case includes a first fastener and a second fastener for removably connecting the cover to the case, the first fastener being disposed in the peripheral portion, and the second fastener being connected with the first fastener through the edge portion. The cover and the box body are connected through the first fastener and the second fastener, and the connection tightness is guaranteed.

In some embodiments, the first fastener is a blind rivet nut disposed in the peripheral portion. The first fastening element is designed as a blind rivet nut, i.e. an internal thread is arranged on the peripheral edge with the cavity by the blind rivet nut, so that the box body and the cover are connected tightly.

In some embodiments, the second fastener is connected to the first fastener through a bottom wall of the recess of the cover. The screw rod of bolt passes the diapire and the rivet nut threaded connection of the recess of lid, and the nut card of bolt is established on the recess to couple together lid and box.

In some embodiments, the battery case further includes a seal disposed in the recess. And arranging a sealing member in the concave part to form a third layer of seal, thereby further improving the sealing property of the battery box.

In some embodiments, the thickness of the seal is such that when the first and second edge portions abut the peripheral edge portion, the seal is in a compressed state such that the seal is capable of acting as a seal.

In some embodiments, the seal is provided with an escape through which the first fastener passes. The sealing member and the first fastening member are arranged in the concave part, and the avoiding part for the first fastening member to pass through is arranged on the sealing member, so that the width of the concave part can be reduced as much as possible, and the influence on the volume of the battery box is avoided.

In some embodiments, the relief portion is sized to be impermeable to liquid between the sealing member and the first fastening member, ensuring the sealing of the battery box.

Embodiments of a third aspect of the present application provide a battery, which includes the battery box in the above embodiments.

An embodiment of a fourth aspect of the present application provides an electric device, which includes the battery in the above embodiment, and the battery is used for providing electric energy.

The above description is only an overview of the technical solutions of the present application, and the present application may be implemented in accordance with the content of the description so as to make the technical means of the present application more clearly understood, and the detailed description of the present application will be given below in order to make the above and other objects, features, and advantages of the present application more clearly understood.

Drawings

In the drawings, like reference characters designate like or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are not to be considered limiting of its scope.

FIG. 1 is a schematic structural view of a vehicle according to some embodiments of the present application;

FIG. 2 is an exploded view of a battery according to some embodiments of the present application;

fig. 3 is an exploded view of a battery cell according to some embodiments of the present disclosure;

FIG. 4 is a schematic structural view of a cover provided in some embodiments of the present application;

FIG. 5 is a schematic structural view of another perspective of a cover provided in accordance with certain embodiments of the present application;

FIG. 6 is a top view of a cover provided in accordance with some embodiments of the present application;

FIG. 7 isbase:Sub>A cross-sectional view taken along plane A-A of FIG. 6;

FIG. 8 is an enlarged view at B of FIG. 7;

fig. 9 is a schematic structural view of a battery box according to some embodiments of the present application;

fig. 10 is a schematic diagram of an exploded structure of a battery box according to some embodiments of the present application;

FIG. 11 is a cross-sectional view taken along plane C-C of FIG. 9;

FIG. 12 is an enlarged view at D of FIG. 11;

FIG. 13 is a schematic structural view of a housing provided in accordance with some embodiments of the present application;

FIG. 14 is a schematic diagram of a gasket according to some embodiments of the present disclosure.

Description of reference numerals:

1000. a vehicle;

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

101. a battery box; 111. a first portion; 112. a second portion;

102. a battery cell; 121. an end cap; 122. a housing; 123. a battery cell assembly; 124. an electrode terminal; 125. a tab;

10. a cover; 110. a top wall; 120. a side wall; 130. an edge portion; 131. a first edge portion; 132. a second edge portion; 133. a recessed portion; 1331. a fixing hole; 20. a box body; 210. a peripheral edge portion; 211. a cavity; 212. mounting holes; 30. a first fastener; 40. a second fastener; 50. a seal member; 510. an avoidance part.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used for convenience in describing the embodiments of the present application and for simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanded.

The applicant notices that the sealing performance of the battery box can affect the safety performance of the battery, and if the battery box is not sealed well, the leakage can not only affect the normal operation of the battery, but also cause safety accidents.

The applicant researches and discovers that the battery box is composed of a box body and a cover, the box body and the cover form a sealed space for accommodating battery cells, the cover is not rigid enough due to the fact that the thickness of the cover is small in order to reduce the weight of the battery, and the cover is easy to deform when the box body and the cover are assembled, so that the sealing between the box body and the cover is failed. In order to solve the problem, the edge of the cover is provided with the concave part, and the shape of the edge of the cover is changed, so that the rigidity of the edge of the cover is increased, the cover is not easy to deform when the box body and the cover are assembled, and the problem of sealing failure of the box body and the cover is avoided.

The battery disclosed in the embodiment of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited thereto. The power supply system comprising the battery and the like disclosed in the application can be used, and thus, the safety problem caused by poor sealing performance of the battery box is favorably solved.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside 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 serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for power requirements for operation during starting, navigation, and traveling of the vehicle 1000.

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

Referring to fig. 2, fig. 2 is an exploded view of a battery according to some embodiments of the present disclosure. The battery 100 includes a battery case and a battery cell 102, and the battery cell 102 is accommodated in the battery case 101. The battery box 101 is used to provide a receiving space for the battery cells 102, and the battery box 101 may have various structures. In some embodiments, the battery box 101 may include a first portion 111 and a second portion 112, the first portion 111 and the second portion 112 cover each other, and the first portion 111 and the second portion 112 together define a receiving space for receiving the battery cell 102. The second part 112 may be a hollow structure with one open end, the first part 111 may be a plate-shaped structure, and the first part 111 covers the open side of the second part 112, so that the first part 111 and the second part 112 define a receiving space together; the first portion 111 and the second portion 112 may be both hollow structures with one side open, and the open side of the first portion 111 covers the open side of the second portion 112. Of course, the battery case 101 formed by the first portion 111 and the second portion 112 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 100, the number of the battery cells 102 may be multiple, and the multiple battery cells 102 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection of the multiple battery cells 102. The plurality of battery cells 102 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells 102 is accommodated in the battery box 101; of course, the battery 100 may also be formed by connecting a plurality of battery cells 102 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and the whole is accommodated in the battery box 101. The battery 100 may also include other structures, for example, the battery 100 may also include a bus member for achieving electrical connection between the plurality of battery cells 102.

Wherein, each battery cell 102 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cells 102 may be cylindrical, flat, rectangular, or other shapes, etc.

Referring to fig. 3, fig. 3 is an exploded structural schematic diagram of a battery cell according to some embodiments of the present disclosure. The battery cell 102 refers to the smallest unit constituting the battery. Referring to fig. 3, the battery cell 102 includes an end cap 121, a housing 122, a battery core assembly 123, and other functional components.

The end cap 121 refers to a member that covers an opening of the case 122 to isolate the internal environment of the battery cell 102 from the external environment. Without limitation, the shape of end cap 121 may be adapted to the shape of housing 122 to fit housing 122. Alternatively, the end cap 121 may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the end cap 121 is not easily deformed when being extruded and collided, and the single battery 102 may have a higher structural strength and improved safety performance. The end cap 121 may be provided with functional components such as the electrode terminal 124. The electrode terminals 124 may be used to electrically connect with the electric core assembly 123 for outputting or inputting electric power of the battery cells 102. In some embodiments, the end cap 121 may further be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 102 reaches a threshold value. The end cap 121 may be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present invention is not limited thereto. In some embodiments, insulation may also be provided on the inside of end cap 121, which may be used to isolate electrical connection components within housing 122 from end cap 121 to reduce the risk of shorting. Illustratively, the insulator may be plastic, rubber, or the like.

The housing 122 is an assembly for mating with the end cap 121 to form an internal environment of the battery cell 102, wherein the formed internal environment may be used to house the cell assembly 123, electrolyte, and other components. The housing 122 and the end cap 121 may be separate components, and an opening may be formed in the housing 122, and the opening may be covered by the end cap 121 to form an internal environment of the battery cell 102. Without limitation, the end cap 121 and the housing 122 may be integrated, and specifically, the end cap 121 and the housing 122 may form a common connecting surface before other components are inserted into the housing, and when it is required to seal the inside of the housing 122, the end cap 121 covers the housing 122. The housing 122 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 122 may be determined according to the specific shape and size of the electric core assembly 123. The material of the housing 122 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment.

The cell assembly 123 is a component in which electrochemical reactions occur in the battery cell 102. One or more electrical core assemblies 123 may be contained within the housing 122. The core assembly 123 is mainly formed by winding or stacking 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 tabs having the active material constitute the main body of the cell assembly, and the portions of the positive and negative electrode tabs having no active material each constitute the tab 125. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or at both ends of the main body portion, respectively. During the charge and discharge of the battery, the positive and negative active materials react with the electrolyte, and the tab 125 is connected to the electrode terminal to form a current loop.

Embodiments of the present application provide a cover for a battery box, fig. 4 is a schematic structural view of the cover provided in some embodiments of the present application, and fig. 5 is a schematic structural view of another view angle of the cover provided in some embodiments of the present application. Referring to fig. 4 and 5, the cover 10 includes a top wall 110, a side wall 120, and a rim portion 130. The side wall 120 is connected to the top wall 110, and the rim portion 130 is connected to the side wall 120.

Fig. 6 isbase:Sub>A top view ofbase:Sub>A cover provided in some embodiments of the present application, and fig. 7 isbase:Sub>A cross-sectional view ofbase:Sub>A-base:Sub>A in fig. 6. Referring to fig. 6 and 7,base:Sub>A rim portion 130 includesbase:Sub>A first rim portion 131,base:Sub>A second rim portion 132, andbase:Sub>A recess 133 disposed between the first rim portion 131 and the second rim portion 132, the first rim portion 131 being connected to the sidewall 120.

In the embodiment of the present application, the battery box includes a box body having an opening, and the cover 10 refers to a component covering the opening of the box body to isolate the internal environment of the battery box from the external environment. Without limitation, the shape of the lid 10 may be adapted to the shape of the case to fit the case.

In one implementation of the embodiment of the present application, the cover 10 may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the cover 10 is not easily deformed when being impacted by a press, and the battery box can have a higher structural strength and improved safety performance.

In other implementations, the material of the cover 10 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present invention is not limited thereto.

In some embodiments, the cover 10 may be the first portion 111, and in other embodiments, the cover 10 may be the second portion 112, which is not limited by the embodiments of the present application.

In the present embodiment, the side wall 120 is disposed around the top wall 110, the side wall 120 is an annular side wall, and the top wall 110 and the side wall 120 are not in the same plane, so that the top wall 110 and the side wall 120 form an accommodating space which is a part of the internal environment of the battery box. In other implementations, the top wall 110 and the side wall 120 may be in the same plane.

In the embodiment of the present application, the edge portion 130 is a portion for connecting with a peripheral edge portion of the case body to ensure the sealing property of the internal environment of the battery case formed by the case body and the cover 10. The rim portion 130 is disposed around the sidewall 120, e.g., the first rim portion 131 is disposed around the sidewall 120, the recess 133 is disposed around the first rim portion 131, and the second rim portion 132 is disposed around the recess 133. The first edge portion 131, the second edge portion 132, and the recess 133 may be connected to a peripheral portion of the case, or any one or two of the first edge portion 131, the second edge portion 132, and the recess 133 may be connected to a peripheral portion of the case. The shape of the rim 130 may be adapted to the shape of the rim portion of the case to fit the case.

In the embodiment of the present application, the first edge portion 131, the second edge portion 132, and the recess 133 are all annular in shape, and the groove formed by the recess 133 is an annular groove.

In an implementation manner of the embodiment of the present application, the cover 10 may be formed by die-casting a plate material, that is, the cover 10 is integrally formed, the thickness of the plate material for manufacturing the cover 10 is greater than or equal to 5mm and less than or equal to 10mm, and the weight of the cover 10 is reduced on the premise of ensuring the strength of the cover 10. The thickness of the sheet material is 7mm, for example.

In other implementations, the cover 10 may be formed in other manners, which are not limited in this application.

In the embodiment of the present application, the edge portion 130 includes the recess 133 disposed between the first edge portion 131 and the second edge portion 132, so that the edge portion 130 has a groove, not a flat structure, and the rigidity of the edge portion 130 having a certain shape is increased, so that the cover 10 is not easily deformed when the case and the cover 10 are assembled, thereby ensuring the sealability of the battery case and avoiding the problem of the sealing failure due to the deformation of the cover.

It should be noted that, for a sheet of paper, the sheet is soft and easily deformed when there is no crease on the sheet, that is, the stiffness of the sheet is weak, and when a crease or a groove like the concave portion 133 is left on the sheet, the stiffness of the sheet increases and is not easily deformed. The edge portion 130 has the same characteristics, that is, when the concave portion 133 is disposed on the edge portion 130, the rigidity of the edge portion 130 can be increased.

Fig. 8 is an enlarged view at B in fig. 7, with reference to fig. 8, where the first edge portion 131 and the second edge portion 132 are coplanar, according to some embodiments of the present application.

In the embodiment of the present application, the first edge portion 131 and the second edge portion 132 are both plate-shaped structures, and the first edge portion 131 and the second edge portion 132 are coplanar, where one plate surface of the first edge portion 131 and one plate surface of the second edge portion 132 are coplanar, and the other plate surface of the first edge portion 131 and the other plate surface of the second edge portion 132 are coplanar.

Since the edge portion 130 of the cover 10 is used to connect with the peripheral edge portion of the case, in the embodiment of the present application, since the first edge portion 131 and the second edge portion 132 are coplanar, both the first edge portion 131 and the second edge portion 132 can be connected with the peripheral edge portion of the case, thereby forming two sealing surfaces, and further improving the sealing performance of the battery case.

In this application embodiment, two sealed faces are the ring seal face, and the ring width of ring seal face is more than or equal to 3mm, is less than or equal to 8mm, has both guaranteed the leakproofness, avoids influencing the volume of battery box again.

According to some embodiments of the present application, referring to fig. 7, the first edge portion 131 and the second edge portion 132 are parallel to the top wall 110.

In the present embodiment, the top wall 110 is also a plate-shaped structure, so that the first and second edge portions 131 and 132 can be parallel to the top wall 110.

In the embodiment of the present application, the first edge portion 131 and the second edge portion 132 are parallel to the top wall 110, which facilitates the manufacturing on the one hand and improves the sealing performance of the battery box on the other hand, and simultaneously, improves the aesthetic performance of the cover 10.

According to some embodiments of the present application, referring to fig. 7, the recess 133 is recessed towards the top wall 110.

In the present embodiment, the recessed portion 133 is recessed toward the top wall 110, that is, the opening of the groove formed by the recessed portion 133 faces the side away from the top wall 110.

In the present embodiment, the recessed portion 133 is recessed toward the top wall 110 such that the recessed portion 133 is closer to the top wall 110, and the recessed portion 133 is located between the first edge portion 131 and the second edge portion 132, so as to prevent the recessed portion 133 from affecting the connection of the first edge portion 131 and the second edge portion 132 with the peripheral edge portion of the case, respectively.

According to some embodiments of the present application, referring to fig. 8, the bottom wall of the recess 133 is planar.

In the embodiment of the present application, the bottom wall of the concave portion 133 is a plane, and in other implementations, the bottom wall of the concave portion 133 may not be a plane, for example, the bottom wall of the concave portion 133 is an arc surface.

In the embodiment of the present application, the bottom wall of the recess 133 is flat for easier manufacturing.

According to some embodiments of the present application, the bottom wall of the recess 133 is parallel to the top wall 110, and/or the bottom wall of the recess 133 is parallel to the first edge portion 131 and the second edge portion 132.

In one implementation of the embodiments of the present application, referring to fig. 7, the bottom wall of the recess 133 is parallel to the top wall 110, and the bottom wall of the recess 133 is parallel to the first edge portion 131 and the second edge portion 132.

In another implementation of the embodiments of the present application, the bottom wall of the recess 133 is parallel to the top wall 110, but the bottom wall of the recess 133 is not parallel to the first and second edge portions 131, 132; or the bottom wall of the recess 133 is not parallel to the top wall 110, but the bottom wall of the recess 133 is parallel to the first and second edge portions 131, 132.

In the present embodiment, the bottom wall of the recess 133 is determined according to the shape of the top wall 110 or the first and second edge portions 131 and 132, so that the shape of the cap 10 is more aesthetic.

In the present embodiment, referring to fig. 4 to 6, the bottom wall of the recess 133 is provided with at least one fixing hole 1331.

In the embodiment of the present application, the fixing holes 1331 are disposed around the recess 133, and a plurality of fixing holes may be disposed in the recess 133 to ensure the fastening of the subsequent cover 10 to the case.

Illustratively, referring to fig. 4-6, when the cover 10 is a square cover, the recess 133 is also a square ring, and the securing holes 1331 are located on opposite sides of the recess 133. In other implementations, the securing holes 1331 may be located on four sides of the recess 133.

In the embodiment of the present application, the fixing holes 1331 allow the cover 10 to be fixed with the case through the recesses 133, ensuring the stability of the cover 10.

According to some embodiments of the present application, the fixing hole 1331 is located at a middle position of the bottom wall of the recess 133; alternatively, the fixing hole 1331 is located at a position of the bottom wall of the recess 133 closer to the second edge portion 132 than the first edge portion 131.

In one implementation of the embodiments of the present application, referring to fig. 8, the securing hole 1331 is located at a position of the bottom wall of the recess 133 that is closer to the second edge portion 132 than the first edge portion 131.

In other implementations, the securing hole 1331 is located at an intermediate position of the bottom wall of the recess 133.

In the embodiment of the present application, the fixing hole 1331 is located at the middle position of the bottom wall of the recess 133, which is a common arrangement and is convenient to manufacture. The fixing hole 1331 is located at a position of the bottom wall of the recess 133 closer to the second edge portion 132 than the first edge portion 131, so that the groove formed by the recess 133 has more space for arranging other components, for example, the groove formed by the recess 133 can be used for placing a gasket.

The embodiment of the application provides a battery box, fig. 9 is a schematic structural diagram of the battery box provided by some embodiments of the application, and fig. 10 is a schematic explosion structural diagram of the battery box provided by some embodiments of the application. Referring to fig. 9 and 10, a battery case includes a cover 10 and a case body 20, the cover 10 is the cover of any of the above embodiments, and the cover 10 is detachably attached to a peripheral edge portion 210 of the case body 20 via an edge portion 130.

In the embodiment of the present application, the case body 20 is a component for cooperating with the cover 10 to form an internal environment of the battery case, wherein the formed internal environment may be used to accommodate the battery cells, the electrolyte, and other components.

In the embodiment of the present application, the case 20 and the cover 10 may be separate components, and an opening may be provided on the case 20, and the cover 10 covers the opening at the opening to form the internal environment of the battery box. The case 20 may be various shapes and various sizes, such as a rectangular parallelepiped shape, a cylindrical shape, a hexagonal prism shape, and the like. Specifically, the shape of the case 20 may be determined according to the specific shape and size of the battery cell. The material of the box 20 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present invention is not limited thereto.

In some embodiments, the lid 10 is the first portion 111 of the above embodiments and the case 20 is the second portion 112 of the above embodiments. In other embodiments, the lid 10 is the second portion 112 of the previous embodiments and the housing 20 is the first portion 111 of the previous embodiments.

The peripheral portion 210 is used to be coupled with the rim portion 130 so that the case 20 and the cover 10 are coupled together. Since the cover 10 is detachably attached to the peripheral portion 210 of the case 20 through the rim portion 130, the attachment and detachment are facilitated.

In the embodiment of the present application, since the edge portion 130 of the cover 10 has a groove instead of a flat structure, the rigidity of the edge portion 130 having a certain shape is increased, so that the cover 10 is not easily deformed when the case 20 and the cover 10 are assembled, thereby ensuring the sealability of the battery box and preventing the problem of sealing failure due to the deformation of the cover 10.

Fig. 11 is a cross-sectional view taken along plane C-C of fig. 9, and fig. 12 is an enlarged view taken at plane D of fig. 11, according to some embodiments of the present application. Referring to fig. 9 to 12, the battery case includes first and second fastening members 30 and 40 for detachably coupling the cover 10 to the case body 20,

in the embodiment of the present application, the cover 10 and the case 20 are connected by the first fastening member 30 and the second fastening member 40, so that the fastening of the connection is ensured.

According to some embodiments of the present application, the first fastener 30 is a blind rivet nut disposed in the peripheral portion 210.

Referring to fig. 11 and 12, the peripheral portion 210 has a cavity 211, and the weight of the peripheral portion 210 can be reduced while ensuring the strength of the peripheral portion 210. Since the peripheral portion 210 has the cavity 211 so that the wall of the peripheral portion 210 is thin, if the female screw is disposed in the peripheral portion 210, the female screw on the peripheral portion 210 must be few, and the fastening of the connection of the case 20 and the cover 10 cannot be secured. While it is subsequently difficult to screw the bolt on the peripheral edge portion 210.

Fig. 13 is a schematic structural diagram of a box according to some embodiments of the present application. Referring to fig. 13, the first fastening member 30 is disposed around the peripheral portion 210, and the peripheral portion 210 is provided with a mounting hole 212 for mounting the first fastening member 30.

In the embodiment of the present application, the first fastening member 30 is provided as a blind rivet nut, that is, a female screw is disposed on the peripheral portion 210 having the cavity by the blind rivet nut, so that the case 20 is fastened to the cover 10.

According to some embodiments of the present application, referring to fig. 12, the second fastener 40 is connected to the first fastener 30 through the bottom wall of the recess 133 of the cover 10.

In the present embodiment, when the first fastening member 30 is a blind rivet nut, the second fastening member 40 is a bolt.

Illustratively, the second fastener 40 passes through a securing hole 1331 in the recess 133.

In the embodiment of the present application, the screw of the bolt is threaded through the bottom wall of the recess 133 of the cover 10 and is engaged with the blind rivet nut, and the nut of the bolt is engaged with the recess 133, thereby coupling the cover 10 and the case 20.

According to some embodiments of the present application, referring to fig. 10 and 12, the battery case further includes a seal 50, the seal 50 being disposed in the recess 133.

In the present embodiment, the sealing member 50 may be a sealing gasket. Illustratively, the seal 50 is a silicone gasket.

In the embodiment of the present application, since the first edge portion 131 and the second edge portion 132 are both connected to the peripheral edge portion of the case, two sealing surfaces, i.e., two-layer sealing, are formed respectively. The sealing member 50 is disposed in the concave portion 133 to form a third layer seal, further improving the sealability of the battery case.

According to some embodiments of the present application, the thickness of the seal 50 is set such that when the first and second edge portions 131, 132 are in close proximity to the peripheral edge portion 210, the seal 50 is in a compressed state.

In the present embodiment, the sealing member 50 has elasticity such that the sealing member 50 can be compressed.

In the present embodiment, when the first edge portion 131 and the second edge portion 132 are attached to the peripheral edge portion 210, the sealing member 50 is in a compressed state, so that the sealing member 50 can perform a sealing function.

In the embodiment of the present application, when the seal member 50 is not compressed, the thickness of the seal member 50 is 3mm or more and 7mm or less; when the first edge portion 131 and the second edge portion 132 are attached to the peripheral edge portion 210, the thickness of the seal 50 is 1mm or more and 4mm or less in a compressed state of the seal 50.

Illustratively, the seal 50 has a thickness of 5mm when the seal 50 is uncompressed; when the first and second edge portions 131, 132 abut the peripheral edge portion 210, the thickness of the seal 50 is 2.5mm when the seal 50 is in a compressed state. That is, when the first edge portion 131 and the second edge portion 132 are attached to the peripheral edge portion 210, the compression amount of the sealing member 50 is 2.5mm, which ensures that the sealing member 50 can perform a good sealing function.

FIG. 14 is a schematic diagram of a gasket according to some embodiments of the present disclosure. Referring to fig. 14, the sealing member 50 is provided with an escape portion 510 through which the first fastening member 30 passes.

In one implementation manner of the embodiment of the present application, the relief portion 510 may be a through hole on the sealing member 50, and when the first fastening member 30 passes through the sealing member 50, the sealing member 50 may be fixed by the first fastening member 30, so as to ensure the stability of the sealing member 50.

In another implementation of the embodiment of the present application, the relief 510 may also be a notch in the seal 50.

In the embodiment of the present application, the annular groove formed by the recessed portion 133 has an annular width greater than or equal to 8mm and less than or equal to 12mm.

In the embodiment of the present application, the depth of the annular groove formed by the recessed portion 133 is greater than or equal to 2mm and less than or equal to 6mm.

In the embodiment of the present application, the sealing member 50 and the first fastening member 30 are both disposed in the recessed portion 133, and the escape portion 510 for the first fastening member 30 to pass through is disposed in the sealing member 50, so that the width of the recessed portion 133 can be reduced as much as possible, and the influence on the volume of the battery box can be avoided.

According to some embodiments of the present application, the bypass portion 510 is sized to be liquid-impermeable between the seal 50 and the first fastener 30.

Illustratively, the relief 510 may be sized to just encase the first fastener 30 when the seal 50 is uncompressed, which facilitates installation, and when the seal 50 is compressed, the seal 50 compresses the first fastener 30 such that fluid cannot pass between the seal 50 and the first fastener 30.

In the embodiment of the present application, the bypass portion 510 is sized to be impermeable to liquid between the sealing member 50 and the first fastening member 30, thereby ensuring the sealability of the battery case.

The embodiment of the application provides a battery, and the battery comprises a battery box in any embodiment.

The battery may be applied to, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

Through adopting the battery in this application embodiment, can guarantee the leakproofness of battery, the security is high.

The present application provides an electric device, which includes the battery in the above embodiments, and the battery is used to provide electric energy.

The powered device may be, but is not limited to, a cell phone, tablet, laptop, electronic toy, electric tool, battery car, electric car, ship, spacecraft, and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

By adopting the electric device in the embodiment of the application, the sealing performance of the battery in the electric device can be ensured, and the safety is high.

The embodiment of the application provides a battery box, which comprises a cover 10, a box body 20, a first fastening piece 30, a second fastening piece 40 and a sealing piece 50.

The cover 10 includes a top wall 110, side walls 120, and a rim portion 130. The side wall 120 is connected to the top wall 110, and the rim portion 130 is connected to the side wall 120. The rim portion 130 includes a first rim portion 131, a second rim portion 132, and a recess 133 disposed between the first rim portion 131 and the second rim portion 132, the first rim portion 131 being connected to the sidewall 120. The recess 133 is recessed toward the top wall 110, a bottom wall of the recess 133 is planar, the bottom wall of the recess 133 is parallel to the top wall 110, and the bottom wall of the recess 133 is parallel to the first and second edge portions 131 and 132, the first and second edge portions 131 and 132 being coplanar. The bottom wall of the recess 133 is provided with at least one fixing hole 1331, the fixing hole 1331 being located at a position of the bottom wall of the recess 133 closer to the second edge portion 132 than the first edge portion 131.

The cover 10 is detachably coupled to the peripheral portion 210 of the case 20 through the rim portion 130 by the first and second fasteners 30 and 40. The second fastening member 40 is connected to the first fastening member 30 through the fixing hole 1331 of the recess 133, the first fastening member 30 is a blind rivet nut provided in the peripheral portion 210, and the second fastening member 40 is a bolt.

The seal 50 is disposed in the recess 133, the seal 50 is a sealing gasket, the thickness of the seal 50 is set such that when the first and second edge portions 131, 132 abut the peripheral edge portion 210, the seal 50 is in a compressed state, and the seal 50 is provided with an escape 510 through which the first fastener 30 passes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.

Claims (18)

1. A cover for a battery box, characterized in that the cover (10) comprises:

a top wall (110);

a side wall (120), the side wall (120) being connected to the top wall (110); and

a rim portion (130), the rim portion (130) connected to the sidewall (120);

wherein the edge portion (130) comprises a first edge portion (131), a second edge portion (132) and a recess (133) arranged between the first edge portion (131) and the second edge portion (132), the first edge portion (131) being connected to the side wall (120).

2. Cover for a battery box according to claim 1, characterised in that said first edge portion (131) and said second edge portion (132) are coplanar.

3. Lid for a battery box according to claim 1, characterised in that said first edge portion (131) and said second edge portion (132) are parallel to said top wall (110).

4. Lid for a battery box according to claim 1, characterised in that the recess (133) is recessed towards the top wall (110).

5. The cover for a battery case according to claim 1, wherein a bottom wall of the recess (133) is a flat surface.

6. Lid for a battery box according to claim 5, characterised in that the bottom wall of the recess (133) is parallel to the top wall (110) and/or that the bottom wall of the recess (133) is parallel to the first edge portion (131) and the second edge portion (132).

7. The cover for a battery box according to any one of claims 1 to 6, wherein a bottom wall of the recessed portion (133) is provided with at least one fixing hole (1331).

8. The cover for battery box according to claim 7, wherein the fixing hole (1331) is located at a middle position of the bottom wall of the recess (133); alternatively, the fixing hole (1331) is located at a position of the bottom wall of the recessed portion (133) closer to the second edge portion (132) than the first edge portion (131).

9. A battery box, characterized in that the battery box (101) comprises

The cap (10) according to any one of claims 1 to 8; and

a case (20);

wherein the lid (10) is detachably connected to a peripheral edge portion (210) of the case (20) through the edge portion (130).

10. A battery box according to claim 9, characterized in that the battery box comprises a first fastening member (30) and a second fastening member (40) for detachably connecting the cover (10) to the box body (20), the first fastening member (30) being provided in the peripheral edge portion (210), the second fastening member (40) being connected with the first fastening member (30) through the edge portion (130).

11. A battery box according to claim 10, characterized in that the first fastening member (30) is a blind rivet nut provided in the peripheral edge portion (210).

12. A battery box according to claim 10, characterized in that the second fastening member (40) is connected to the first fastening member (30) through the bottom wall of the recess (133) of the cover (10).

13. A battery box according to any of claims 10-12, characterized in that the battery box further comprises a seal (50), the seal (50) being arranged in the recess (133).

14. A battery box according to claim 13, characterized in that the thickness of the sealing member (50) is arranged such that the sealing member (50) is in a compressed state when the first edge portion (131) and the second edge portion (132) abut the peripheral edge portion (210).

15. A battery box according to claim 13, characterized in that the seal (50) is provided with a relief portion (510) through which the first fastening member (30) passes.

16. The battery box according to claim 15, characterized in that the bypass (510) is dimensioned such that no liquid can penetrate between the seal (50) and the first fastening member (30).

17. A battery comprising a battery case according to any one of claims 9 to 16.

18. An electrical consumer, characterized in that the consumer comprises a battery according to claim 17 for providing electrical energy.

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