CN220569791U - Battery box, battery and electric equipment - Google Patents

Abstract

The application relates to a battery box, a battery and electric equipment. The battery box body comprises a top cover, a frame body and a bottom cover, wherein the top cover and the bottom cover are respectively covered at two opposite ends of the frame body; the edge of the top cover and the edge of the bottom cover are in sealing connection on at least the same wall surface of the frame body. Therefore, the edges of the top cover and the edges of the bottom cover are all arranged on the same wall surface of the frame body in a centralized mode, and corresponding sealing is carried out on the wall surface, so that sealing positions scattered everywhere can be concentrated, the number of sealing pieces is reduced, and the risk of sealing failure of the battery box body is reduced.

Description

Battery box, battery and electric equipment

Technical Field

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

Background

The statements herein merely provide background information related to the present application and may not necessarily constitute prior art.

In a new energy automobile, most of power battery packs are installed at the bottom of the automobile body in a sealed box form due to factors such as an in-car space and a power battery volume. The battery pack is a power source of an electric automobile, and is internally provided with a plurality of charged components, so that once water or other sundries enter, electrical short circuit can occur, and even explosion and ignition of the battery can occur, thereby causing serious accidents. Therefore, the battery box body of the battery pack needs to be sealed and protected, and a certain sealing grade is achieved. However, in the related art, the sealing of the battery case is complicated, and the risk of sealing failure is high.

Disclosure of Invention

In view of the problems, the application provides a battery box, a battery and an electric device, which can relieve the problem of high risk of failure of the sealing of the battery box.

In a first aspect, the present application provides a battery case, including a top cover, a frame, and a bottom cover, where the top cover and the bottom cover are respectively covered at two opposite ends of the frame along a thickness direction of the frame;

the edge of the top cover and the edge of the bottom cover are in sealing connection on at least the same wall surface of the frame body.

Above-mentioned battery box can make the edge of top cap and the edge of bottom all concentrate the same wall that sets up at the framework to carry out corresponding sealing at this wall, consequently, can make the sealed position that disperses everywhere become concentrated, thereby reduce the quantity of sealing member, and then reduced the risk that the battery box sealed to lose efficacy.

In some embodiments, the edge of the top cover and the edge of the bottom cover extend to at least one outer side of the frame along the length direction of the frame for sealing connection.

In general, since the top cover and the bottom cover are provided at both ends in the thickness direction of the frame, the edges of the top cover and the bottom cover are extended toward the same side in the longitudinal direction of the frame at the same time, and the structures of the top cover and the bottom cover can be simplified. In addition, because the outer side surface of the frame body is in sealing connection, the operation of sealing by operators is also facilitated.

In some embodiments, the edge of the top cover and the edge of the bottom cover extend to at least one outer side surface of the frame body along the width direction of the frame body for sealing connection.

For the same reason as described above, the edges of the top cover and the bottom cover are extended to the same side in the width direction of the frame at the same time, and the structures of both the top cover and the bottom cover can be simplified. In addition, because the outer side surface of the frame body is in sealing connection, the operation of sealing by operators is also facilitated.

In some embodiments, the edge of the top cover and the edge of the bottom cover extend to at least one outer side of the frame along the length direction of the frame for sealing connection, and the edge of the top cover and the edge of the bottom cover extend to at least one outer side of the frame for sealing connection along the width direction of the frame.

Therefore, the edges of the top cover and the bottom cover can extend to the peripheral outer side surfaces of the frame body, the integral structure is simplified, and the operation of sealing by operators is facilitated.

In some embodiments, a sealing gap is formed between an edge of one of the top cover and the bottom cover and a wall surface of the frame body, and an edge of the other of the top cover and the bottom cover protrudes into the sealing gap to perform sealing connection.

Therefore, an overlapping area is formed among the frame body, the top cover and the bottom cover, and the number of sealing positions can be further reduced by utilizing the overlapping relation, so that the risk of sealing failure of the battery box body is reduced.

In some embodiments, the top cover has a top panel and a first flange, the first flange is connected to an edge of the top panel, the bottom cover has a bottom panel and a second flange, the second flange is connected to an edge of the bottom panel;

one of the first flange and the second flange forms a sealing gap with the wall surface of the frame body, and the other one of the first flange and the second flange protrudes into the sealing gap to be in sealing connection.

Through setting up the form of turn-ups, can not influence the relative framework location of roof and bottom plate, make the more quick accuracy that sealed gap formed, and protruding action in also is more quick accurate.

In some embodiments, a sealing structure is provided between the edge of the top cover and the edge of the bottom cover in the sealing gap.

Therefore, when the edge of the top cover and the edge of the bottom cover are overlapped on the outer side of the frame body, the outer seal of the battery box body can be realized only by sealing the gap between the top cover and the bottom cover through the sealing structure.

In some embodiments, the sealing structure comprises a sealant.

Specifically, when the edge of the top cover and the edge of the bottom cover need to be sealed, sealant can be coated on the edge of the top cover or the edge of the bottom cover under the condition that the top cover or the bottom cover is separated from the frame body, so that after the top cover or the bottom cover is fixed with the frame body, the sealing connection between the edge of the top cover and the edge of the bottom cover can be realized.

Therefore, the sealing glue is adopted to simplify the installation and positioning of the sealing structure and improve the sealing reliability.

In some embodiments, there is an overlap area between the edge of the top cover and the edge of the bottom cover in a first direction perpendicular to the same wall of the housing, and the ratio of the size of the sealing structure to the size of the overlap area is 0.2-0.3 in a second direction perpendicular to the first direction.

The ratio of the size of the sealing structure to the size of the overlapping area is 0.2-0.3, so that the sealing grade requirement of the external sealing of the battery box body can be met, a certain reserved space is provided for the sealing structure by the overlapping area, the exposure risk of the sealing structure is reduced, and the sealing reliability is improved.

In some embodiments, the dimension of the seal structure in the second direction is not less than 8 millimeters.

When the size of the sealing structure is not less than 8 mm, the general requirement of external sealing of the battery box body can be met.

In a second aspect, the present application further provides a battery, including the battery case in any of the above embodiments.

According to the battery, the top cover edge and the bottom cover edge of the battery box body are in sealing connection on the same wall surface of the frame body, so that the edges of the top cover and the bottom cover are all arranged on the same wall surface of the frame body in a centralized manner, and corresponding sealing is performed on the wall surface, so that sealing positions scattered everywhere can be concentrated, the number of sealing elements is reduced, and the risk of sealing failure of the battery box body is further reduced.

In a third aspect, the present application further provides an electrical device, including a battery in any of the above embodiments.

Above-mentioned consumer, because the edge of top cap in the battery box carries out sealing connection with the edge of bottom at the same wall of framework, can make the edge of top cap and the edge of bottom all concentrate the same wall that sets up at the framework to carry out corresponding sealedly at this wall, consequently, can make the sealed position that disperses everywhere become concentrated, thereby reduce the quantity of sealing member, and then reduced the risk of battery box seal failure.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic structural view of a vehicle according to one or more embodiments.

Fig. 2 is a schematic structural view of a battery according to one or more embodiments.

Fig. 3 is an exploded view of a battery case according to one or more embodiments.

Fig. 4 is a side view of the battery case shown in fig. 3.

Fig. 5 is a schematic view of a sectional A-A structure of the battery case shown in fig. 4.

Fig. 6 is a partially enlarged schematic view of a portion of the battery case shown in fig. 5.

Fig. 7 is a partially enlarged schematic view of a portion B of the battery case shown in fig. 6.

Reference numerals in the specific embodiments are as follows:

a vehicle 1000;

a battery 100;

a battery case 10;

top cover 11, top plate 111, first flange 112, support flange 1121, first sealing flange 1122, frame 12, bottom cover 13, bottom plate 131, second flange 132, sealing structure 14;

a controller 200;

a motor 300;

sealing the slit X1.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

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 "comprising" and "having" and any variations thereof in the description and claims of the present application and in 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," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein 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 present application. 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. Those of skill in the art will explicitly and implicitly appreciate 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 merely an association relationship describing an association object, and indicates that three relationships may exist, for example, 1 and/or 2 may indicate: there are three cases where 1 alone exists, 1 and 2 exist at the same time, and 2 exist alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are 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 sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

The power battery pack is formed by placing various related devices and materials related to electricity, machinery, heat, chemistry and the like in a limited battery box body. The battery box body is an important part of the battery pack, and the battery box needs to meet enough mechanical properties to prevent deformation and damage; and meanwhile, foreign matters, dust, water vapor and the like are prevented from entering the box body to influence the functions, service life, performance and the like of the battery. Therefore, the battery case needs to meet certain external sealing conditions and achieve certain sealing grades.

In the prior art, the battery pack is formed by combining a top cover, a frame body and a bottom cover assembly. Sealing structures are needed between the top cover and the frame body and between the frame body and the bottom cover so as to meet the requirement of external sealing. In general, sealing is performed between two adjacent fittings in the form of elastic sealing gaskets, but the number of elastic sealing gaskets is correspondingly large due to the large number and dispersion of sealing positions. Therefore, when one of the sealing positions is in sealing failure, for example, a certain elastic sealing gasket is broken, the elastic sealing gasket slides and misplaces, the compression amount of the elastic sealing gasket is small, and the like, the sealing failure of the whole battery box body can be caused, and the risk of the sealing failure is increased.

Based on this, in order to alleviate the high problem of battery box sealed failure risk, designed a battery box, including top cap, framework and bottom, the opposite both ends of framework are located to top cap and bottom lid along the thickness direction lid of framework respectively. The edge of the top cover and the edge of the bottom cover are in sealing connection on at least the same wall surface of the frame body.

In this way, the edges of the top cover and the bottom cover can be arranged on the same wall surface of the frame body in a centralized manner, and corresponding sealing is carried out on the wall surface, so that sealing positions scattered everywhere can be concentrated, the number of sealing elements is reduced, and the risk of sealing failure of the battery box body is reduced.

The battery box disclosed by the embodiment of the application is applied to a battery, and the battery can be used in power utilization devices such as vehicles, ships or aircrafts, but is not limited to the batteries.

The embodiment of the application provides an electricity utilization device using a battery as a power supply, wherein the electricity utilization 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 car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application 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 present application. 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 application, 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 and 3, fig. 2 is a perspective view of a battery 100 according to some embodiments of the present application, and fig. 3 is an exploded view of a battery case 10 according to some embodiments of the present application. The battery 100 includes a battery case 10 and a battery cell accommodated in the battery case 10. The battery case 10 is used for providing an accommodating space for the battery unit, and the battery case 10 may have various structures. In some embodiments, the battery case 10 may include a top cover 11, a frame 12, and a bottom cover 13, the top cover 11 and the bottom cover 13 being respectively disposed at opposite ends of the frame 12, and the top cover 11, the frame 12, and the bottom cover 13 together defining an accommodating space for accommodating the battery cells. The top cover 11 and the bottom cover 13 may be hollow structures with one end open, the open side cover of the top cover 11 is engaged with one end open side of the battery case 10, and the open side cover of the bottom cover 13 is engaged with the other end open side of the battery case 10. Of course, the battery case 10 formed of the top cover 11, the frame 12, and the bottom cover 13 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

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

Wherein each battery cell may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped.

Fig. 3 is an exploded view of a battery case according to one or more embodiments; FIG. 4 is a side view of the battery case shown in FIG. 3; FIG. 5 is a schematic view of the cross-sectional structure A-A shown in FIG. 3; fig. 6 is a partially enlarged schematic view of fig. 5 at a. Referring to fig. 3-6, a battery case 10 is provided in an embodiment of the present application. The battery case 10 includes a top cover 11, a frame 12, and a bottom cover 13. The top cover 11 and the bottom cover 13 are respectively provided at opposite ends of the frame 12 in the thickness direction of the frame 12. Wherein, the edge of the top cover 11 and the edge of the bottom cover 13 are in sealing connection on at least the same wall surface of the frame 12.

The frame 12 is an object having at least one opening and having a frame shape as a whole. The frame 12 may be formed by bending an elongated member, or may be formed by splicing a plurality of hollow frame strips.

The edge of the top cover 11 refers to a portion of the top cover 11 along its edge, and may specifically be a portion near the outer boundary line of the top cover 11.

The edge of the bottom cover 13 refers to a portion of the bottom cover 13 along its edge, and may specifically be a portion near the outer boundary line of the bottom cover 13.

The wall surface of the housing 12 may be any surface of the housing 10. Specifically, the frame 12 includes two end surfaces that are opposite to each other in the thickness direction thereof, two outer side surfaces that are opposite to each other in the length direction thereof, two inner side surfaces that are opposite to each other in the width direction thereof, and two inner side surfaces that are opposite to each other. Specifically, the longitudinal direction of the frame 12 is the X direction shown in fig. 3, the width direction of the frame 12 is the Y direction shown in fig. 3, and the thickness direction of the frame 12 is the Z direction shown in fig. 3.

The edge of the top cover 11 and the edge of the bottom cover 13 are connected in a sealing manner on the same wall surface of the frame 12, that is, the sealing relationship among the edge of the top cover 11, the edge of the bottom cover 13 and the frame 12 is realized on the same wall surface of the frame 12.

In this way, the edges of the top cover 11 and the bottom cover 13 can be both disposed on the same wall surface of the frame 12 in a concentrated manner, and the wall surface is sealed accordingly, so that the sealing positions distributed around can be concentrated, the number of sealing members can be reduced, and the risk of sealing failure of the battery case 10 can be reduced.

Referring to fig. 6, according to some embodiments of the present application, along the length direction of the frame 12, the edges of the top cover 11 and the bottom cover 13 extend to at least one outer side surface of the frame 12 for sealing connection.

In general, the top cover 12 and the bottom cover 13 are provided to cover both ends of the frame 12 in the thickness direction, and therefore, the edges of the top cover 11 and the bottom cover 13 are extended toward the same side of the frame 12 in the longitudinal direction at the same time, and the structures of the top cover 11 and the bottom cover 13 can be simplified. In addition, the sealing connection is performed at the outermost side of the frame 12, so that the operator can perform the sealing operation conveniently.

In other embodiments, the edges of the top cover 11 and the bottom cover 13 extend to at least one outer side of the frame 12 along the width direction of the frame 12 for sealing connection.

For the same reason as described above, the edges of the top cover 11 and the bottom cover 13 are extended simultaneously to the same side in the width direction of the housing 12, and the structures of both the top cover 11 and the bottom cover 13 can be simplified. In addition, the sealing connection is performed at the outermost side of the frame 12, so that the operator can perform the sealing operation conveniently.

In other embodiments, along the length direction of the frame 12, the edges of the top cover 11 and the bottom cover 13 extend to at least one outer side of the frame 12 for sealing connection, and along the width direction of the frame 12, the edges of the top cover 11 and the bottom cover 13 extend to at least one outer side of the frame 12 for sealing connection.

Therefore, the edges of the top cover 11 and the bottom cover 13 can extend to the outer side surfaces around the frame body 12, the integral structure is simplified, and the operation of sealing by operators is facilitated.

It will be appreciated that, in addition to the width and length directions, the edges of the top cover 11 and the bottom cover 13 may extend to any one of the end surfaces of the frame 12 in the thickness direction of the frame 12 for sealing connection.

Referring to fig. 6 and 7, according to some embodiments of the present application, a sealing gap X1 is formed between an edge of one of the top cover 11 and the bottom cover 13 and a wall surface of the frame 12. The edge of the other of the top cover 11 and the bottom cover 13 protrudes into the sealing slit X1 to perform sealing connection.

In this way, the overlapping area is generated among the frame 12, the top cover 11 and the bottom cover 13, and the number of sealing positions can be further reduced by utilizing the overlapping relation, so that the risk of sealing failure of the battery box is reduced.

In other embodiments, the edge of the top cover 11 and the edge of the bottom cover 13 are sealed and connected separately from each other on the same wall surface of the frame 12. Specifically, the same sealing member is used for sealing between the edge of the top cover 11 and the frame 12 and between the edge of the bottom cover 13 and the frame 12, so that the edge of the top cover 11 and the edge of the bottom cover 13 are in sealing connection.

Although the edge of the top cover 11 and the edge of the bottom cover 13 are separated from each other on the same wall surface of the frame 12, since the edge of the top cover 11 and the edge of the bottom cover 13 are on the same wall surface of the frame 12, the sealing position between the two is pulled in, and thus, the sealing connection can be intensively performed by using an integral sealing structure, thereby reducing the risk of the sealing failure of the battery box.

Referring to fig. 6 and 7, in accordance with some embodiments of the present application, a sealing structure 14 is provided between an edge of the top cover 11 and an edge of the bottom cover 13 in the sealing gap X1.

The seal structure 14 refers to a structure that can be fitted to a component to prevent leakage of fluids, gases, dust, and other impurities from the joint. The seal structure 14 may be an elastic seal structure, such as a rubber seal, a silicone seal, or the like, or may be a packing seal structure, or the like.

Thus, when the edges of the top cover 11 and the bottom cover 13 are stacked on the outer side surface of the frame body 12, the outer sealing of the battery case 10 can be achieved only by sealing the gap between the top cover 11 and the bottom cover 13 by the sealing structure 14.

According to some embodiments of the present application, the sealing structure 14 comprises a sealant.

Specifically, when it is necessary to seal the edge of the top cover 11 and the edge of the bottom cover 13, the edge of the top cover 11 or the edge of the bottom cover 13 may be coated with the sealant when the top cover 11 or the bottom cover 13 is separated from the frame 12, so that the sealing connection between the edge of the top cover 11 and the edge of the bottom cover 13 can be achieved after the top cover 11 or the bottom cover 13 is fixed to the frame 12.

Therefore, the sealing glue is adopted to simplify the installation and positioning of the sealing structure and improve the sealing reliability.

Referring to fig. 6 and 7, according to some embodiments of the present application, the top cover 11 has a top plate 111 and a first flange 112, and the first flange 112 is connected to an edge of the top plate 111. The bottom cover 13 has a bottom plate 131 and a second flange 132, and the second flange 132 is connected to an edge of the bottom plate 131. A sealing gap X1 is formed between one of the first flange 112 and the second flange 132 and the wall surface of the frame 12, and the other of the first flange 112 and the second flange 132 protrudes into the sealing gap X1 to seal.

The first flange 112 is a side extending from the top plate 111 and extending upward or downward of the top plate 111. The edge region may be turned over, curled or rolled by a suitable flanging tool, or may be formed by integrally stamping, casting, etc. with the top plate 11, or may be formed by splicing the top plate 111 with the first flange 112 separately.

The second flange 132 is a flange that extends from the bottom plate 131 and extends upward or downward of the bottom plate 131. The edge region may be turned over, curled or rolled by a suitable flanging tool, or may be formed by integrally stamping, casting, or the like with the bottom plate 131, or may be formed by splicing the bottom plate 131 with the second flange 132 separately.

By providing the flange, the sealing slit X1 can be formed more quickly and accurately without affecting the positioning of the top plate 111 and the bottom plate 131 relative to the frame 11, and the protruding movement can be also more quickly and accurately.

Specifically, one of the top plate 111 or the bottom plate 131 and the frame 12 may be fixed to form an assembly, and a sealing gap X1 is formed between the corresponding flange and the side surface of the frame 12, and then the other of the top plate 111 or the bottom plate 131 is mounted on the assembly, so that the corresponding flange protrudes from the sealing gap X1.

Specifically, in the embodiment of the present application, the first flange 112 includes a support flange 1121 and a first sealing flange 1122, and the support flange 1121 is connected between the edge of the top plate 111 and the first sealing flange 1122 and is supported at one end in the thickness direction of the frame 12. The first sealing flange 1122 is angled with respect to the support flange 1121. The other side in the thickness direction of the frame 12 is in contact with the bottom plate 131. A sealing gap X1 is formed between one of the first sealing flange 1122 and the second flange 132 and the outer side surface of the frame 12, and the other of the first sealing flange 1122 and the second flange 132 protrudes from the sealing gap X1 to perform sealing connection.

First, the bottom cover 13 is positioned to one end of the frame 12, the end surface of the frame 12 is abutted against the bottom plate 131, and the frame 12 and the bottom plate 131 are fixedly connected by the first fixing member. The first fixing member may be a screw, a bolt, or the like, or may be connected by welding or the like. At this time, the edge of the bottom plate 131 exceeds the edge of the frame 12, so that the second flange 132 can be located outside the frame 12 in the width or length direction thereof, and a sealing gap X1 is formed between the frame 12 and the second flange. The top cover 11 is positioned to the other end of the frame 12, the support flange 1121 is supported on the end face of the frame 12, and the first sealing flange 1122 protrudes from the sealing gap X1 to perform sealing connection. The support flange 1121 is fixedly connected to the frame 12 by a second fixing member. The second fixing member may be a screw, a bolt, or the like, or may be connected by welding or the like.

Referring to fig. 6 and 7, according to some embodiments of the present application, in a first direction perpendicular to the same wall surface of the frame 12, there is an overlapping area between an edge of the top cover 11 and an edge of the bottom cover 13, and in a second direction perpendicular to the first direction, a ratio of a dimension H1 of the sealing structure 14 to a dimension H2 of the overlapping area is 0.2-0.3.

The overlapping area of the edge of the top cover 11 and the edge of the bottom cover 13 refers to an area where the projected relationship of the edges of the top cover 11 and the bottom cover 13 onto the same wall surface of the frame 12 overlaps.

Specifically, in the embodiment of the present application, the first direction perpendicular to the same wall surface of the housing 12 refers to the longitudinal direction X of the housing 12, and the second direction refers to the thickness direction Z of the housing 12.

By setting the ratio of the dimension H1 of the sealing structure 14 to the dimension H2 of the overlapping region to be 0.2-0.3, the sealing grade requirement of the external seal of the battery box 10 can be met, and the overlapping region also provides a certain reserved space for the sealing structure 14, so that the exposure risk of the sealing structure 14 is reduced, and the sealing reliability is improved.

According to some embodiments of the present application, the dimension H1 of the sealing structure 14 is not less than 8 millimeters in the second direction.

When the dimension H1 of the seal structure 14 is set to be not less than 8 mm, the general requirement of the external seal of the battery case 10 can be satisfied.

Referring to fig. 3 to 7, according to some embodiments of the present application, a battery case 10 is provided, which includes a top cover 11, a frame 12, and a bottom cover 13. The top cover 11 and the bottom cover 13 are respectively provided at opposite ends of the frame 12 in the thickness direction thereof. The top cover 11 has a top plate 111 and a first flange 112, and the first flange 112 is connected to an edge of the top plate 111. The bottom cover 13 has a bottom plate 131 and a second flange 132, and the second flange 132 is connected to an edge of the bottom plate 131. The first flange 112 includes a support flange 1121 and a first sealing flange 1122, and the support flange 1121 is connected between the edge of the top plate 111 and the first sealing flange 1122 and is supported at one end in the thickness direction of the frame 12. The other end of the frame 12 in the thickness direction is in contact with the bottom plate 131. The second flange 132 forms an angle of 90 degrees with the bottom plate 131. The second flange 132 extends in the direction of the top cover 11 and forms a sealing gap X1 with all the outer sides of the periphery of the frame 12. The first sealing flange 1122 forms an angle of 90 degrees with the supporting flange 1121 and extends toward the bottom cover 13, and the first sealing flange 1122 protrudes into the sealing gap X1. The sealant is disposed between the first sealing flange 1122 and the second flange 132.

Referring to fig. 2 to 7, in addition, a battery 100 is provided in an embodiment of the present application, including the battery case 10 in any of the above embodiments.

In the battery 100 of the embodiment of the application, since the edge of the top cover 11 and the edge of the bottom cover 13 in the battery box 10 are in sealing connection with each other on the same wall surface of the frame 12, the edge of the top cover 11 and the edge of the bottom cover 13 can be all arranged on the same wall surface of the frame 12 in a concentrated manner and are correspondingly sealed on the wall surface, so that sealing positions scattered everywhere can be concentrated, the number of sealing elements is reduced, and the risk of sealing failure of the battery box 10 is reduced.

Referring to fig. 1 to 7, in addition, an electrical device 1000 is further provided in an embodiment of the present application, including the battery 100 in any of the above embodiments.

According to the electric equipment 1000, as the edge of the top cover 11 and the edge of the bottom cover 13 in the battery box 10 are in sealing connection with the same wall surface of the frame 12, the edge of the top cover 11 and the edge of the bottom cover 13 are all intensively arranged on the same wall surface of the frame 12 and are correspondingly sealed on the wall surface, the sealing positions scattered everywhere can be concentrated, so that the number of sealing elements is reduced, and the risk of sealing failure of the battery box 10 is reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A battery box (10) is characterized by comprising a top cover (11), a frame body (12) and a bottom cover (13), wherein the top cover (11) and the bottom cover (13) are respectively covered at two opposite ends of the frame body (12) along the thickness direction of the frame body (12);

the edge of the top cover (11) and the edge of the bottom cover (13) are in sealing connection on at least the same wall surface of the frame body (12).

2. The battery box (10) according to claim 1, wherein, along the length direction of the frame (12), the edge of the top cover (11) and the edge of the bottom cover (13) extend to at least one outer side surface of the frame (12) for sealing connection; and/or

Along the width direction of the frame body (12), the edge of the top cover (11) and the edge of the bottom cover (13) extend to at least one outer side surface of the frame body (12) for sealing connection.

3. The battery case (10) according to claim 1 or 2, wherein a sealing slit (X1) is formed between an edge of one of the top cover (11) and the bottom cover (13) and a wall surface of the frame body (12), and an edge of the other of the top cover (11) and the bottom cover (13) protrudes into the sealing slit (X1) to perform sealing connection.

4. The battery case (10) according to claim 3, wherein the top cover (11) has a top plate (111) and a first flange (112), the first flange (112) being connected to an edge of the top plate (111), the bottom cover (13) has a bottom plate (131) and a second flange (132), the second flange (132) being connected to an edge of the bottom plate (131);

the sealing gap (X1) is formed between one of the first flange (112) and the second flange (132) and the wall surface of the frame body (12), and the other one of the first flange (112) and the second flange (132) protrudes into the sealing gap (X1) to be in sealing connection.

5. A battery compartment (10) according to claim 3, characterized in that in the sealing slit (X1) there is a sealing structure (14) between the edge of the top cover (11) and the edge of the bottom cover (13).

6. The battery compartment (10) of claim 5, wherein the sealing structure (14) comprises a sealant.

7. The battery case (10) according to claim 5, wherein an overlapping area exists between an edge of the top cover (11) and an edge of the bottom cover (13) in a first direction perpendicular to the same wall surface of the frame (12), and a ratio of a size of the sealing structure (14) to a size of the overlapping area is 0.2 to 0.3 in a second direction perpendicular to the first direction.

8. The battery compartment (10) of claim 7, wherein the seal (14) is sized no less than 8 millimeters in the second direction.

9. A battery (100) comprising a battery case (10) according to any one of claims 1 to 8.

10. A powered device comprising a battery (100) as claimed in claim 9.