CN220492099U - Box assembly of battery, battery and power utilization device - Google Patents

Abstract

The application discloses a box subassembly, battery and power consumption device of battery. The box subassembly of battery includes first box and second box, and the week of one of first box and second box is followed and is had turn-ups structure and another week along having turn-ups structure, turn-ups structure and turn-ups structure joint cooperation, and turn-ups structure includes the side direction turn-ups, and one of first box and second box includes first curb plate, and turn-ups structure includes that side direction turn-ups and side direction turn-ups are connected with the border of first curb plate, and the side direction turn-ups sets up relatively in the width direction of box subassembly with side direction turn-ups joint cooperation with first curb plate. In the technical scheme of this application embodiment, be favorable to reducing the waste in space, improve space utilization, still reduced bolt quantity to can alleviate the weight of box subassembly, realize the lightweight design of battery, improve the production efficiency of battery.

Description

Box assembly of battery, battery and power utilization device

Technical Field

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

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles. The box body component of the battery in the related technology occupies large space and has low space utilization rate.

Disclosure of Invention

In view of the above, the present application provides a battery cell, a battery, and an electric device, which can improve space utilization.

In a first aspect, the present application provides a case assembly for a battery, comprising: the first box body and the second box body are connected to define a containing cavity, and the containing cavity is used for containing a plurality of battery monomers; the periphery of one of the first box body and the second box body is provided with a hemming structure, the periphery of the other one of the first box body and the second box body is provided with a flanging structure, and at least one part of the flanging structure is inserted into a clamping groove defined by the hemming structure so as to realize clamping fit with the hemming structure; the flanging structure comprises a lateral flanging, one of the first box body and the second box body comprises a first side plate, the flanging structure comprises a lateral flanging and the lateral flanging is connected with the edge of the first side plate, and the lateral flanging and the first side plate are oppositely arranged in the width direction of the box body assembly so as to be matched with the lateral flanging in a clamping manner.

In the technical scheme of this embodiment, compare with the mode that adopts the bolt to fix in the correlation technique, through set up the turn-up structure on the week edge of one of first box and second box, adopt turn-up structure and turn-up structure joint cooperation, on the one hand, can reduce first box or second box in the ascending size of predetermined direction, thereby can reduce the ascending size of box subassembly in predetermined direction, improve the space utilization of battery in the ascending space utilization of predetermined direction, reduce the waste in space, specifically, through setting up the side turn-up with the relative setting of first side plate, can reduce the size of box subassembly in the direction of perpendicular to first side plate or side turn-up, improve the space utilization of battery in the direction of perpendicular to first side plate or side turn-up, and because side turn-up need not hold the bolt in the correlation technique, only as the structure with side turn-up joint cooperation, consequently, can suitably reduce the width of side turn-up, thereby can reduce the width direction of box subassembly in side turn-up, improve the space utilization of battery in the widthwise direction of side turn-up, on the other hand, reduce the quantity of side turn-up, can reduce the light in weight of box subassembly, thereby the weight of the design of box subassembly can be realized.

In addition, the hemming structure can be formed at the periphery of the first box body or the second box body once or for many times through professional equipment after the first box body and the second box body are positioned, the hemming structure directly envelopes the periphery of the first box body or the second box body in the forming process, namely, the forming process of the hemming structure and the locking process of the first box body and the second box body are synchronously carried out, after the hemming structure is formed, the locking between the first box body and the second box body is completed, the step of independently installing a plurality of bolts is omitted, so that the assembly efficiency of the first box body and the second box body can be improved, and the production efficiency of batteries is improved.

In some embodiments, the lateral flange comprises a first flange, the lateral flange comprising a first bead snap-fit with the first flange; the first turned-up edge is connected to one end edge of the first side plate in the height direction, the length direction of the first turned-up edge and the length direction of the first turned-up edge extend along the length direction of the box assembly, and the width direction of the first turned-up edge extends along the height direction of the box assembly. In the above technical scheme, through setting up first turn-up and first turn-ups, can be with first box and second box along the ascending border of box subassembly's length, and the setting of first turn-ups can reduce the box subassembly in the ascending size of perpendicular to first turn-ups, reduces the width dimension of box subassembly promptly, improves the space utilization of battery in the ascending space utilization of box subassembly.

In some embodiments, the lateral flange comprises a second flange, the lateral flange comprising a second bead that snap fits with the second flange; the first side plate is connected with the second curled edge at least at one end edge in the length direction, the second curled edge and the length direction of the second curled edge extend along the height direction of the box body assembly, and the width direction of the second curled edge extends along the length direction of the box body assembly. In the above technical scheme, through setting up second turn-ups and second turn-ups, can be with first box and second box along the ascending border of box subassembly's direction of height together, and the setting of second turn-ups can reduce the box subassembly in the ascending size of perpendicular to second turn-ups, reduces the width dimension of box subassembly promptly, improves the space utilization of battery in the ascending space utilization of box subassembly.

In some embodiments, the flanging structure comprises a third flanging, the one of the first box and the second box further comprises a first flat plate, the first flat plate is connected with one end of the first side plate in the height direction, the hemming structure comprises a third hemming, and at least one end edge of the first flat plate in the length direction is connected with the third hemming; the third flanging is oppositely arranged with the first flat plate in the height direction of the box body assembly so as to be matched with the third flanging in a clamping manner. In the technical scheme, the height dimension of the box body assembly can be reduced by arranging the third flanging, and the space utilization rate of the battery in the height direction of the box body assembly is improved; through setting up one of first box and second box as including first dull and stereotyped to can form the third turn-ups with third turn-ups joint complex at the border of first dull and stereotyped, further improve the connection reliability of first box and second box. In addition, the third flanging is not required to accommodate bolts in the related art, and is only used as a structure matched with the third flanging in a clamping manner, so that the width of the third flanging can be properly reduced, the size of the box body assembly in the width direction of the third flanging can be reduced, and the space utilization rate of the battery in the width direction of the third flanging can be improved.

In some embodiments, the third bead and the third bead each have a length that extends in a width direction of the tank assembly, the third bead having a width that extends in a length direction of the tank assembly. In the above technical scheme, the first box body and the second box body can be connected together along the edges of the width direction of the box body assembly by arranging the third curled edge and the third curled edge.

In some embodiments, the number of the first side plates is two, and the two first side plates are disposed opposite to each other in the width direction of the first flat plate. In the above technical scheme, through setting up first box or second box into including first flat board and two first side plates, can make first box or second box have the open opening of multiaspect on the one hand, make things convenient for a plurality of battery monomer's arranging, on the other hand, the border at first flat board and first side plate forms the turn-ups that a plurality of extending directions are different to the turn-ups of adaptation a plurality of extending directions are different, thereby can make the border of first box link to each other with the border joint of second box, can reduce the box subassembly simultaneously in the ascending size of predetermined direction, improve the space utilization of battery in predetermined direction.

In some embodiments, one end of the first flat plate and one end of the first side plate are in transitional connection through a transitional plate, the lateral flanging and the third flanging are in transitional connection through a connecting flanging, and the connecting flanging is opposite to the transitional plate and is matched in shape; wherein, connect the turn-ups and form the arc turn-ups, perhaps, connect the turn-ups for the slope of third turn-ups sets up. In the technical scheme, through setting up the transition board and the connection turn-ups of relative setting, can reduce the turn-ups that the turn-ups structure appears abrupt in length direction and break up the angle, can make the connection interface of first box and second box smooth or smooth transition, be favorable to improving the connection leakproofness of first box and second box.

In some embodiments, the other of the first and second cases comprises: the second flat plate and the first flat plate are oppositely arranged in the height direction of the box assembly; the second side plate is connected with one end edge of the second flat plate in the length direction of the box body assembly along one end edge of the second side plate in the height direction; the side flanging is connected to the second flat plate and two side edges of the second side plate in the width direction of the box body assembly, and the third flanging is connected to one end edge of the second side plate away from the second flat plate. In the above technical scheme, through setting up the other of first box and second box into including second flat board and second curb plate to with first flat board and first curb plate looks adaptation, through adopting third turn-ups and third turn-ups to cooperate, can make first box and second box along the border joint that the width direction of box subassembly extends together, further improve the connection reliability of first box and second box.

In some embodiments, the number of the second side plates is two, and the two second side plates are oppositely arranged in the length direction of the second flat plate. In the above technical scheme, through setting up first box or second box into including second flat board and two second curb plates, can make first box or second box have the open opening of multi-sided on the one hand, make things convenient for a plurality of battery monomer's arrangement, on the other hand conveniently form the turn-ups that a plurality of extending directions are different at the border of second flat board and second curb plate to can make the border of first box link to each other with the border joint of second box, can reduce the box subassembly simultaneously in the ascending size of reservation, improve the space utilization of battery in the reservation orientation.

In some embodiments, the first case includes the first panel and two of the first side panels, and the second case includes the second panel and two of the second side panels. In the technical scheme, the first box body and the second box body are arranged to be of the structure, so that the first box body and the second box body are combined to form a regular cuboid structure, the waste of space can be reduced, and the space utilization rate is improved.

In some embodiments, further comprising: and at least one part of the sealing piece is positioned in the clamping groove and is clamped between the flanging structure and the hemming structure. In the technical scheme, the sealing piece is arranged, so that the gap between the first box body and the second box body can be sealed by the sealing piece, the connection tightness of the first box body and the second box body is improved, the box body assembly is internally limited with a relatively sealed accommodating cavity, and the reliability of a plurality of battery monomers is improved.

In some embodiments, the first housing is an integral piece and the second housing is an integral piece. In the technical scheme, the first box body is arranged as the integrated part, so that the number of parts of the first box body can be reduced, the connecting step of each part of the first box body is omitted, and the structural integrity and the structural strength of the first box body can be improved, thereby improving the structural reliability of the first box body; the second box body is arranged as an integrated part, so that the number of parts of the second box body can be reduced, the connecting step of each part of the second box body is omitted, the structural integrity and the structural strength of the second box body can be improved, the structural reliability of the second box body can be improved, and the structural reliability of a box body assembly of a battery is improved.

In a second aspect, the present application provides a battery comprising the case assembly of the battery in the above embodiments.

In the technical scheme of this application embodiment, through adopting above-mentioned battery, can reduce the occupation space of battery, improve space utilization, realize the lightweight design of battery, can also improve the production efficiency of battery.

In a third aspect, the present application provides an electrical device comprising the battery of the above embodiments.

In the technical scheme of this application embodiment, through adopting above-mentioned battery, can improve the space utilization of power consumption device, realize power consumption device's lightweight design, improve power consumption device's production efficiency.

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 diagram of an electrical device according to some embodiments of the present disclosure;

fig. 2 is a schematic structural view of a battery according to some embodiments of the present application;

FIG. 3 is a structural exploded view of a battery according to some embodiments of the present application;

fig. 4 is a schematic structural view of a battery cell according to some embodiments of the present application;

FIG. 5 is a cross-sectional view of a cell structure of some embodiments of the present application;

FIG. 6 is a structural exploded view of a housing assembly of a battery according to some embodiments of the present application;

fig. 7 is an enlarged view of the portion a shown in fig. 6;

fig. 8 is an enlarged view of the portion B shown in fig. 6;

FIG. 9 is a structural cross-sectional view of a housing assembly of a battery according to some embodiments of the present application;

fig. 10 is a partial enlarged view of a case assembly of the battery shown in fig. 9.

Reference numerals in the specific embodiments are as follows:

an electric device 1000;

battery 100, controller 200, motor 300;

the housing assembly 10 is configured to be secured to a vehicle,

the first casing 11, the first side plate 111, the first flat plate 112, the transition plate 113,

the second casing 12, the second side plate 121, the second flat plate 122,

the flange structure 13, the lateral flange 131, the first flange 1311, the second flange 1312, the third flange 132, the connecting flange 133,

the hemming structure 14, the card slot 140, the lateral hemming 141, the first hemming 1411, the second hemming 1412, the third hemming 142, the connecting hemming 143,

Seal 15, lateral seal 151, first seal 1511, second seal 1512, third seal 152,

the battery pack includes a battery cell 20, a case 20a, a case cover 21, an electrode terminal 21a, a case 22, an opening 220, an electrode assembly 23, a tab 23a, an active material coating portion 23b, an explosion-proof valve 24, a holder 25, and an insulator 26.

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, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists 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.

Currently, the application of power batteries is more widespread 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, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

The box body assembly of the battery in the related art comprises a first box body and a second box body which are arranged up and down, wherein the first box body and the second box body are fixedly connected through a plurality of bolts, the peripheries of the first box body and the second box body are provided with annular installation flanges which encircle the first box body and the second box body, the annular installation flanges are positioned in the same horizontal plane, and a plurality of bolts are arranged on the annular installation flanges and are distributed in the extending direction of the annular installation flanges.

However, due to the arrangement of the annular mounting flange, the occupied space of the box body assembly in the X direction and the Y direction is increased, so that the space is seriously wasted, the space utilization rate is low, the weight of the battery is increased due to the plurality of bolts, and the production efficiency of the battery is reduced.

In order to solve the problem that space utilization is low, this application provides a box subassembly of battery, through set up the turn-up structure on the week edge of one of first box and second box, adopt the turn-up structure to connect the cooperation with Zhou Yanka of another one of first box and second box, can reduce the occupation space of first box and second box hookup location, reduce the installation space of battery, be favorable to reducing the waste of space, improve space utilization, still reduced the bolt quantity, thereby can lighten the weight of box subassembly, realize the lightweight design of battery, improve the production efficiency of battery.

The battery disclosed by the embodiment of the application can be used for an electric device using the battery as a power supply or various energy storage systems using the battery as an energy storage element. The power device may be, but is not limited to, a cell phone, tablet, notebook computer, electric toy, electric tool, battery car, electric car, ship, spacecraft, etc. 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 the vehicle as an example of the electric device 1000 according to an embodiment of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like. The battery 100 is provided in the interior of the vehicle, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle. The battery 100 may be used for power supply of a vehicle, for example, the battery 100 may be used as an operating power source of the vehicle. The vehicle 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.

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

Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of a battery 100 according to some embodiments of the present application; fig. 3 is a structural exploded view of battery 100 according to some embodiments of the present application. The battery 100 includes a case assembly 10 and a plurality of battery cells 20, and the battery cells 20 are accommodated in the case assembly 10.

The case assembly 10 is used to provide a receiving cavity for the battery cell 20, and the case assembly 10 may have various structures. In some embodiments, the case assembly 10 may include a first case 11 and a second case 12, the first case 11 and the second case 12 being covered with each other, the first case 11 and the second case 12 together defining a receiving chamber for receiving the battery cell 20. The second casing 12 may have a hollow structure with an opening at one end, the first casing 11 may have a plate-shaped structure, and the first casing 11 covers the opening side of the second casing 12, so that the first casing 11 and the second casing 12 define a receiving cavity together. Of course, the case assembly 10 formed by the first case 11 and the second case 12 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

In the battery 100, the plurality of battery cells 20 may be connected in series, parallel or a series-parallel connection, wherein the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the box body assembly 10; of course, the battery 100 may also be a form of a plurality of battery cells 20 connected in series or parallel or series-parallel to form a battery 100 module, and a plurality of battery 100 modules connected in series or parallel or series-parallel to form a whole and accommodated in the case assembly 10.

Wherein each battery cell 20 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 cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a battery cell 20 according to some embodiments of the present application; fig. 5 is a structural cross-sectional view of a battery cell 20 according to some embodiments of the present application. The battery cell 20 refers to the smallest unit constituting the battery 100. The battery cell 20 includes a case 20a, an electrode assembly 23, and other functional components. The housing 20a includes a housing cover 21 and a housing body 22.

The case cover 21 refers to a member that is covered at the opening 220 of the case body 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the cover 21 may be adapted to the shape of the body 22 to fit the body 22. Alternatively, the cover 21 may be made of a material having a certain hardness and strength (such as an aluminum alloy), so that the cover 21 is not easy to deform when being extruded and bumped, so that the battery cell 20 can have a higher structural strength, and the reliability can be improved. The case cover 21 may be provided with functional components such as electrode terminals 21 a. The electrode terminal 21a may be used to be electrically connected with the electrode assembly 23 for outputting or inputting electric power of the battery cell 20. In some embodiments, a pressure relief mechanism may also be provided on the housing cover 21 for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The material of the cover 21 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application.

The case body 22 is an assembly for fitting the case cover 21 to form an internal environment of the battery cell 20, wherein the formed internal environment may be used to accommodate the electrode assembly 23, the electrolyte, and other components. The case body 22 and the case cover 21 may be separate members, and an opening 220 may be provided on the case body 22, and the case cover 21 may be closed to the opening 220 at the opening 220 to form the internal environment of the battery cell 20. The cover 21 and the body 22 may be integrated, and specifically, the cover 21 and the body 22 may form a common connection surface before other components are inserted into the housing, and when the interior of the body 22 needs to be sealed, the cover 21 is then covered with the body 22. The housing 22 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the can body 22 may be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application.

The electrode assembly 23 is a component in which electrochemical reactions occur in the battery cell 20. One or more electrode assemblies 23 may be contained within the can 22. The electrode assembly 23 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 sheets having the active material constitute the active material coated portions 23b of the electrode assembly 23, and the portions of the positive and negative electrode sheets having no active material constitute the tabs 23a, respectively. The positive electrode tab and the negative electrode tab may be located at one end of the active material coating portion 23b together or at both ends of the active material coating portion 23b, respectively. During charge and discharge of the battery 100, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab 23a is connected to the electrode terminal 21a to form a current loop.

As shown in fig. 4 and 5, the battery cell 20 further includes a holder 25, an insulating member 26, and an explosion-proof valve 24, and the holder 25 is provided at one end of the active material coating portion 23 b. The insulating member 26 is connected to the holder 25 and is commonly wrapped around the circumference of the electrode assembly 23. Insulation 26 may be used to isolate electrical connection components within housing 20a from housing 20a to reduce the risk of short circuits. The insulating member 26 may be adhesively connected to the bracket 25, or may be thermally fused, although the insulating member 26 may be connected to the bracket 25 in other manners. An explosion-proof valve 24 is provided on the case 20a, and the explosion-proof valve 24 is used to release the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The explosion-proof valve 24 may be provided on the cover 21 or any wall of the housing 22.

Referring again to fig. 2 and 3, and with further reference to fig. 6, fig. 6 is an exploded view of the structure of the case assembly 10 of the battery 100 according to some embodiments of the present application. The case assembly 10 of the battery 100 includes a first case 11 and a second case 12, and the first case 11 and the second case 12 are connected to define a receiving chamber for receiving a plurality of battery cells 20.

The peripheral edge of one of the first casing 11 and the second casing 12 has a hemming structure 14, and the peripheral edge of the other of the first casing 11 and the second casing 12 is snap-fitted with the hemming structure 14.

Specifically, a part or all of the peripheral edge of the first case 11 may have a hemming structure 14, and the peripheral edge of the second case 12 is in snap fit with the hemming structure 14; a part or all of the peripheral edge of the second casing 12 may have the hemming structure 14, and the peripheral edge of the first casing 11 may be engaged with the hemming structure 14.

Here, "the peripheral edge of the first casing 11" means the peripheral edge of the opening of the first casing 11, "the peripheral edge of the second casing 12" means the peripheral edge of the opening of the second casing 12, and "the hemming structure 14" means a structure in which the peripheral edge of the first casing 11 or the second casing 12 is curled up in a predetermined direction.

Referring again to fig. 6, the other of the first case 11 and the second case 12 has a flange structure 13 at a peripheral edge thereof, and at least a portion of the flange structure 13 is inserted into a clamping groove 140 defined by the hemming structure 14 to be in clamping engagement with the hemming structure 14.

Specifically, the periphery of the first box 11 has a flanging structure 13, the periphery of the second box 12 has a hemming structure 14, the hemming structure 14 defines a clamping groove 140, and at least a part of the flanging structure 13 is inserted into the clamping groove 140, so that the flanging structure 13 on the first box 11 and the hemming structure 14 on the second box 12 are clamped together, and further the clamping fit of the first box 11 and the second box 12 is realized; the periphery of the second box 12 may have a flanging structure 13, the periphery of the first box 11 has a hemming structure 14, the hemming structure 14 defines a clamping groove 140, and at least a portion of the flanging structure 13 is inserted into the clamping groove 140, so that the flanging structure 13 on the second box 12 and the hemming structure 14 on the first box 11 are clamped together, and further the clamping fit of the first box 11 and the second box 12 is realized.

The "flanging structure 13 on the first box 11" refers to a structure formed by outwards or inwards turning the edge of the first box 11, and the "flanging structure 13 on the second box 12" refers to a structure formed by outwards or inwards turning the edge of the second box 12. The turning direction of the burring 13 may be set according to the structure of the case assembly 10.

Referring to fig. 6, and with further reference to fig. 7 and 8, fig. 7 is an enlarged view of the portion a shown in fig. 6; fig. 8 is an enlarged view of the portion B shown in fig. 6. The Y direction is the width direction of the case assembly 10.

The flange structure 13 includes a lateral flange 131, one of the first and second cases 11 and 12 includes a first side plate 111, the hemming structure 14 includes a lateral hemming 141, the lateral hemming 141 is connected with an edge of the first side plate 111, and the lateral flange 131 and the first side plate 111 are disposed opposite to each other in a width direction of the case assembly 10 to be engaged with the lateral hemming 141.

For example, the first case 11 includes a first side plate 111, a lateral curled edge 141 is provided at an edge of the first side plate 111, and a lateral curled edge 131 is provided at a peripheral edge of the second case 12; for another example, the second case 12 includes a first side plate 111, a lateral curled edge 141 is provided at an edge of the first side plate 111, and a lateral curled edge 131 is provided at a peripheral edge of the first case 11.

The lateral flange 131 is disposed opposite to the first side plate 111, and an extending direction of the lateral flange 131 is consistent with an extending direction of the lateral curled edge 141, so that the lateral flange 131 is in snap fit with the lateral curled edge 141 on the first side plate 111.

In the technical solution of this embodiment, compared with the mode of fixing by using the bolts in the related art, through setting up the turn-up structure 14 on the periphery of one of the first box 11 and the second box 12, set up the turn-up structure 13 on the periphery of the other of the first box 11 and the second box 12, adopt turn-up structure 14 and turn-up structure 13 joint cooperation, on the one hand, can reduce the size of first box 11 or second box 12 in the predetermined direction, thereby can reduce the size of box subassembly 10 in the predetermined direction, improve the space utilization of battery 100 in the predetermined direction, reduce the waste of space, specifically, through setting up the side turn-up 131 that sets up relatively with first side plate 111, can reduce the size of box subassembly 10 in the direction of being perpendicular to first side plate 111 or side turn-up 131, improve the space utilization of battery 100 in the direction of being perpendicular to first side plate 111 or side turn-up 131, and because side turn-up 131 does not need to hold the bolts in the related art, only as the structure with side turn-up 141 joint cooperation, consequently, can reduce the width of box subassembly 10 in proper, thereby can reduce the width of side turn-up side 131, can reduce the size of box subassembly 10 in the width, and can realize the reduction of the size of box subassembly 10 in the side width of the side turn-up component 10 in the side of the side subassembly, and the size of the side subassembly 10 in the side of the side can be reduced in the size of the side of the box subassembly 10.

In addition, the hemming structure 14 may be formed on the periphery of the first case 11 or the second case 12 once or multiple times by professional equipment after the first case 11 and the second case 12 are positioned, the hemming structure 14 directly envelopes the periphery of the first case 11 or the second case 12 in the forming process, that is, the forming process of the hemming structure 14 and the locking process of the first case 11 and the second case 12 are performed synchronously, and after the forming of the hemming structure 14 is completed, the locking between the first case 11 and the second case 12 is completed, thereby omitting the step of separately installing a plurality of bolts, so that the assembling efficiency of the first case 11 and the second case 12 can be improved, and the production efficiency of the battery 100 can be improved.

Referring again to fig. 6-8, the lateral flange 131 includes a first flange 1311, the lateral flange 141 includes a first flange 1411, and the first flange 1411 is in snap fit with the first flange 1311.

As shown in fig. 6, the X direction in the drawing is the length direction of the case assembly 10, and the Z direction is the height direction of the case assembly 10. The first turn-up 1411 is connected to one end edge of the first side plate 111 in the height direction (Z direction shown in fig. 6), the length directions of the first turn-up 1311 and the first turn-up 1411 each extend in the length direction of the tank assembly 10, and the width direction of the first turn-up 1311 extends in the height direction of the tank assembly 10.

Specifically, in the embodiment in which the first casing 11 includes the first side plate 111 and the second casing 12 includes the first flange 1311, the first flange 1311 is formed by folding the edge of the second casing 12 in the height direction of the casing assembly 10, so that the size of the second casing 12 in the direction perpendicular to the first flange 1311, that is, the size of the second casing 12 in the width direction of the casing assembly 10 can be reduced.

In an embodiment in which the second casing 12 includes the first side plate 111 and the first casing 11 includes the first flange 1311, which is not shown in the drawings, the first flange 1311 is formed by folding the edge of the first casing 11 in the height direction of the casing assembly 10, so that the size of the first casing 11 in the direction perpendicular to the first flange 1311, that is, the size of the first casing 11 in the width direction of the casing assembly 10, can be reduced.

In the above technical solution, by providing the first curled edge 1411 and the first curled edge 1311, the first case 11 and the second case 12 can be connected together along the edge of the case assembly 10 in the length direction, and the arrangement of the first curled edge 1311 can reduce the size of the case assembly 10 in the direction perpendicular to the first curled edge 1311, that is, reduce the width of the case assembly 10, and improve the space utilization of the battery 100 in the width direction of the case assembly 10.

Referring again to fig. 7 and 8, the lateral flange 131 includes a second flange 1312, and the lateral flange 141 includes a second flange 1412, and the second flange 1412 is in snap fit with the second flange 1312.

At least one end edge of the first side plate 111 in the length direction (X direction shown in fig. 6) is connected to a second bead 1412, the length directions (Z direction shown in fig. 6) of the second bead 1312 and the second bead 1412 both extend in the height direction of the case assembly 10, and the width direction (X direction shown in fig. 6) of the second bead 1312 extends in the length direction of the case assembly 10.

Specifically, in the embodiment shown in fig. 6 in which the first case 11 includes the first side plate 111 and the second case 12 includes the second flange 1312, the second flange 1312 is formed by folding over the edge of the second case 12 along the length direction of the case assembly 10; in an embodiment where the second casing 12, not shown in the drawings, includes the first side plate 111 and the first casing 11 includes the second flange 1312, the second flange 1312 is formed by folding over the edge of the first casing 11 along the length direction of the casing assembly 10.

In the above technical solution, by providing the second bead 1412 and the second flange 1312, the first case 11 and the second case 12 can be connected together along the edges of the case assembly 10 in the height direction, and the second flange 1312 can reduce the size of the case assembly 10 in the direction perpendicular to the second flange 1312, that is, the width of the case assembly 10, and improve the space utilization of the battery 100 in the width direction of the case assembly 10.

Referring to fig. 6-8 again, the flanging structure 13 includes a third flanging 132, and one of the first case 11 and the second case 12 further includes a first flat plate 112, that is, one of the first case 11 and the second case 12 includes a first side plate 111 and a first flat plate 112, and the first flat plate 112 is connected to one end (such as an upper end or a lower end in a height direction of the first side plate 111) of the first side plate 111 in a height direction.

The hemming structure 14 includes a third hemming 142, at least one end edge of the first flat plate 112 in the length direction (X direction shown in fig. 6) is connected to the third hemming 142, and the third flange 132 is disposed opposite to the first flat plate 112 in the height direction of the tank assembly 10, so that the third flange 132 is in snap fit with the third hemming 142.

In the above technical solution, by providing the third flange 132, the height dimension of the case assembly 10 can be reduced, and the space utilization of the battery 100 in the height direction of the case assembly 10 can be improved; by arranging one of the first case 11 and the second case 12 to include the first flat plate 112, a third flange 132 may be formed at the edge of the first flat plate 112 to be in snap fit with the third flange 132, so as to further improve the connection reliability of the first case 11 and the second case 12.

In addition, since the third flange 132 does not need to accommodate the bolts of the related art, but is provided as a structure that is snap-fitted with the third flange 142, the width of the third flange 132 can be appropriately reduced, so that the size of the case assembly 10 in the width direction of the third flange 132 can be reduced, and the space utilization of the battery 100 in the width direction of the third flange 132 can be improved.

In some embodiments, the length direction (Y direction shown in fig. 6) of the third flange 132 and the third bead 142 each extend along the width direction of the tank assembly 10, and the width direction of the third flange 132 extends along the length direction of the tank assembly 10.

In the above-described embodiments, the first casing 11 and the second casing 12 can be joined together along the widthwise edges of the casing assembly 10 by providing the third beads 142 and the third beads 132.

Referring to fig. 6-8 again, the number of the first side plates 111 is two, and the two first side plates 111 are disposed opposite to each other in the width direction of the first flat plate 112.

Specifically, in the embodiment in which the first casing 11 includes the first flat plate 112 and the two first side plates 111, the length direction of the first flat plate 112 extends in the X direction, the width direction of the first flat plate 112 extends in the Y direction, the thickness direction of the first flat plate 112 extends in the Z direction, the length direction of the first side plates 111 extends in the X direction, the width direction of the first side plates 111 extends in the Z direction, and the thickness direction of the first side plates 111 extends in the Y direction. The two first side plates 111 are connected to both ends of the first flat plate 112 in the width direction, respectively.

The edge of one end of each first side plate 111 far from the first flat plate 112 is provided with a first curled edge 1411, and the length direction of the first curled edge 1411 extends along the length direction of the first side plate 111, that is, the length direction of the first curled edge 1411 extends along the length direction of the tank assembly 10.

Each of the first side plates 111 is provided at both end edges in a length direction thereof with second beads 1412, respectively, and the length direction of the second beads 1412 extends in a width direction of the first side plate 111, i.e., the length direction of the second beads 1412 extends in a height direction of the case assembly 10.

The first flat plate 112 is provided with third beads 142 at both end edges in the length direction thereof, respectively, and the length direction of the third beads 142 extends in the width direction of the first flat plate 112, that is, the length direction of the third beads 142 extends in the width direction of the tank assembly 10.

For each first side plate 111, both ends in the length direction of the first turn-up 1411 are connected to one ends in the length direction of the two second turn-ups 1412, respectively; for the first flat plate 112 and the two first side plates 111, both ends in the length direction of the third beads 142 are connected to one ends in the length direction of the two second beads 1412, so that the two first beads 1411, the two second beads 1412 and the two third beads 142 are connected together to form the bead structures 14 distributed at the peripheral edges of the first case 11.

Since the extending direction of the hemming structure 14 is identical to the extending direction of the burring structure 13, the first casing 11 and the second casing 12 can be coupled together by Zhou Yanka, and the locking of the first casing 11 and the second casing 12 can be achieved.

In the above technical solution, by arranging the first case 11 or the second case 12 to include the first flat plate 112 and two first side plates 111, on one hand, the first case 11 or the second case 12 may have a multi-side opening, so as to facilitate arrangement of a plurality of battery cells 20, and on the other hand, a plurality of curled edges with different extending directions may be formed at edges of the first flat plate 112 and the first side plates 111, so as to adapt to the curled edges with different extending directions, so that the peripheral edge of the first case 11 and the peripheral edge of the second case 12 may be connected in a clamped manner, and meanwhile, the size of the case assembly 10 in a predetermined direction may be reduced, and the space utilization of the battery 100 in the predetermined direction may be improved.

Referring to fig. 7 and 8 again, one end of the first flat plate 112 is in transitional connection with one end of the first side plate 111 through the transition plate 113, the lateral flange 131 is in transitional connection with the third flange 132 through the connection flange 133, the connection flange 133 is opposite to the transition plate 113, and the connection flange 133 is matched with the shape of the transition plate 113.

For example, the connection flange 133 may form an arc-shaped flange, or the connection flange 133 may be disposed obliquely with respect to the third flange 132.

The transition plate 113 may make one end of the first flat plate 112 smoothly or smoothly transition with one end of the first side plate 111, so that the lateral curled edge 141 on the first side plate 111 smoothly or smoothly transitions with the third curled edge 142 on the first top plate through the connection curled edge 143, and the connection curled edge 133 may make the lateral curled edge 131 and the third curled edge 132 smoothly or smoothly transition, so that the connection interface between the first case 11 and the second case 12 smoothly or smoothly transitions, which is beneficial to improving the connection tightness of the first case 11 and the second case 12.

Therefore, in the above technical solution, by providing the transition plate 113 and the connection flange 133 that are disposed opposite to each other, the break angle of the bead structure 14 and the flange structure 13 that are abrupt in the length direction can be reduced, so that the connection interface between the first case 11 and the second case 12 can be smoothly or smoothly transitioned, which is beneficial to improving the connection tightness between the first case 11 and the second case 12.

Referring again to fig. 6 to 8, the other of the first casing 11 and the second casing 12 includes a second flat plate 122 and a second side plate 121, and the second flat plate 122 is disposed opposite to the first flat plate 112 in the height direction of the casing assembly 10.

One end edge of the second side plate 121 in the height direction is connected with one end edge of the second flat plate 122 along the length direction of the box assembly 10, the lateral flanging 131 is connected to the second flat plate 122 and two side edges of the second side plate 121 in the width direction of the box assembly 10, and the third flanging 132 is connected to one end edge of the second side plate 121 far from the second flat plate 122.

Specifically, in the embodiment in which the first casing 11 shown in fig. 6 includes the first side plate 111 and the first flat plate 112, the second casing 12 includes the second side plate 121 and the second flat plate 122; in an embodiment in which the second casing 12, not shown in the drawings, includes the first side plate 111 and the first flat plate 112, the first casing 11 includes the second side plate 121 and the second flat plate 122.

In the above technical solution, by setting the other of the first case 11 and the second case 12 to include the second flat plate 122 and the second side plate 121 so as to be matched with the first flat plate 112 and the first side plate 111, by adopting the third flange 132 and the third flange 142 to cooperate, the edges of the first case 11 and the second case 12 extending in the width direction of the case assembly 10 can be clamped together, and the connection reliability of the first case 11 and the second case 12 can be further improved.

Referring to fig. 6 again, the number of the second side plates 121 is two, and the two second side plates 121 are disposed opposite to each other in the length direction of the second flat plate 122.

Specifically, in the embodiment in which the second casing 12 includes the second flat plate 122 and the two second side plates 121, the length direction of the second flat plate 122 extends in the X direction, the width direction of the second flat plate 122 extends in the Y direction, the thickness direction of the second flat plate 122 extends in the Z direction, the length direction of the second side plate 121 extends in the Y direction, the width direction of the second side plate 121 extends in the Z direction, and the thickness direction of the second side plate 121 extends in the X direction. The two second side plates 121 are connected to both ends of the second plate 122 in the longitudinal direction, respectively.

Each of the second side plates 121 is provided with a third flange 132 at an end edge thereof remote from the second flat plate 122, and the length direction of the third flange 132 extends in the length direction of the second side plate 121, that is, the length direction of the third flange 132 extends in the width direction of the box assembly 10, the width direction of the third flange 132 extends in the length direction of the box assembly 10, and the thickness direction of the third flange 132 extends in the height direction of the box assembly 10.

Each of the second side plates 121 is provided with second flanges 1312 respectively at both end edges in a length direction thereof, the length direction of the second flanges 1312 extends in a width direction of the second side plate 121, that is, the length direction of the second flanges 1312 extends in a height direction of the box assembly 10, the width direction of the second flanges 1312 extends in a length direction of the box assembly 10, and the thickness direction of the second flanges 1312 extends in a width direction of the box assembly 10.

The second plate 122 is provided with first flanges 1311 at both side edges in the width direction thereof, respectively, and the length direction of the first flanges 1311 extends in the length direction of the second plate 122, that is, the length direction of the first flanges 1311 extends in the length direction of the case assembly 10, the width direction of the first flanges 1311 extends in the height direction of the case assembly 10, and the thickness direction of the first flanges 1311 extends in the width direction of the case assembly 10.

For each second side plate 121, two ends in the length direction of the third flange 132 are connected to one ends in the length direction of the two second flanges 1312, and for the second flat plate 122 and the two second side plates 121, two ends in the length direction of the first flange 1311 are connected to one ends in the length direction of the two second flanges 1312, so that the two first flanges 1311, the two second flanges 1312 and the two third flanges 132 are connected together to form flange structures 13 distributed around the second box 12.

Since the extending direction of the hemming structure 14 is identical to the extending direction of the burring structure 13, the first casing 11 and the second casing 12 can be coupled together by Zhou Yanka, and the locking of the first casing 11 and the second casing 12 can be achieved.

In the above technical solution, by setting the first case 11 or the second case 12 to include the second flat plate 122 and two second side plates 121, on one hand, the first case 11 or the second case 12 may have a multi-side opening, so as to facilitate arrangement of a plurality of battery cells 20, and on the other hand, a plurality of flanges with different extending directions may be formed at edges of the second flat plate 122 and the second side plates 121, so that the peripheral edge of the first case 11 and the peripheral edge of the second case 12 may be connected in a clamped manner, and meanwhile, the size of the case assembly 10 in the predetermined direction may be reduced, so as to improve the space utilization of the battery 100 in the predetermined direction.

Referring again to fig. 6-8, the first case 11 includes a first flat plate 112 and two first side plates 111, and the second case 12 includes a second flat plate 122 and two second side plates 121.

Specifically, the first flat plate 112 and the second flat plate 122 are oppositely disposed in the height direction of the case assembly 10, the two first side plates 111 are oppositely disposed in the width direction of the case assembly 10, the two second side plates 121 are oppositely disposed in the length direction of the case assembly 10, two ends of the first flat plate 112 and the second flat plate 122 in the length direction are respectively connected through the two second side plates 121, two sides of the first flat plate 112 and the second flat plate 122 in the width direction are respectively connected through the two first side plates 111, and two ends of the two first side plates 111 in the length direction are respectively connected through the two second side plates 121, so that the case assembly 10 forms a cuboid structure.

In the above technical scheme, the first box 11 and the second box 12 are arranged to be of the above structure, so that the first box 11 and the second box 12 can be combined to form a regular cuboid structure, the waste of space can be reduced, and the space utilization rate is improved.

Referring again to fig. 6, and with further reference to fig. 9 and 10, fig. 9 is a structural cross-sectional view of the case assembly 10 of the battery 100 according to some embodiments of the present application; fig. 10 is a partial enlarged view of the case assembly 10 of the battery 100 shown in fig. 9. The case assembly 10 of the battery 100 further includes a seal 15, at least a portion of the seal 15 is positioned within the clamping groove 140, and at least a portion of the seal 15 is sandwiched between the flange structure 13 and the crimp structure 14.

Wherein, the sealing member 15 may be an elastic material member (e.g., a rubber member), and the sealing member 15 may be deformed according to a clamping force between the first casing 11 and the second casing 12, thereby sealing a gap between the first casing 11 and the second casing 12 and improving a connection tightness of the first casing 11 and the second casing 12. The sealing member 15 may be a felt, a sealant, or the like, and may be selected as needed.

The seal 15 may be a closed loop structure extending along the connection interface of the first and second cases 11 and 12. The sealing member 15 may be a strip structure, and when the strip structure is installed, the arrangement direction of the strip structure may be adjusted according to the connection interface of the first case 11 and the second case 12, so that two ends in the length direction of the strip structure are butted or partially overlapped, to seal the gap between the first case 11 and the second case 12, and improve the connection tightness of the first case 11 and the second case 12.

In the above technical solution, by providing the sealing member 15, the gap between the first case 11 and the second case 12 can be sealed by using the sealing member 15, so as to improve the connection tightness between the first case 11 and the second case 12, define a relatively sealed accommodating cavity in the case assembly 10, and improve the reliability of the plurality of battery cells 20.

Referring to fig. 6 again, the first case 11 is an integral part, and the second case 12 is an integral part.

In the above technical solution, the first box 11 is set as an integrally formed part, so that the number of components of the first box 11 can be reduced, the step of connecting each component of the first box 11 is omitted, and the structural integrity and the structural strength of the first box 11 can be improved, so that the structural reliability of the first box 11 can be improved; by providing the second casing 12 as an integrally formed member, the number of parts of the second casing 12 can be reduced, the steps of connecting the respective parts of the second casing 12 can be omitted, and the structural integrity and structural strength of the second casing 12 can be improved, so that the structural reliability of the second casing 12 can be improved, thereby improving the structural reliability of the casing assembly 10 of the battery 100.

According to some embodiments of the present application, there is also provided a battery 100, the battery 100 including the case assembly 10 of the battery 100 according to any one of the above aspects.

In the technical scheme of this application embodiment, through adopting above-mentioned battery 100, can reduce battery 100's occupation space, improve space utilization, realize battery 100's lightweight design, can also improve battery 100's production efficiency.

According to some embodiments of the present application, there is also provided an electric device 1000, the electric device 1000 including the battery 100 described in the above scheme, and the battery 100 being used to provide electric power to the electric device 1000.

The powered device 1000 may be any of the aforementioned devices or systems employing the battery 100.

In the technical solution of the embodiment of the present application, by adopting the battery 100, the space utilization rate of the power consumption device 1000 can be improved, the light-weight design of the power consumption device 1000 is realized, and the production efficiency of the power consumption device 1000 is improved.

According to some embodiments of the present application, there is provided a case assembly 10 of a battery 100, the case assembly 10 of the battery 100 including a first case 11, a second case 12, and a sealing member 15, the first case 11 being connected above the second case 12.

The first case 11 includes a first flat plate 112, two first side plates 111, and upper ends of the two first side plates 111 are connected to both ends of the first flat plate 112 in the Y direction, respectively. The lower edge of each first side plate 111 has a first turn-up 1411, the both end edges of each first side plate 111 in the length direction have a second turn-up 1412, the both end edges of the first flat plate 112 in the length direction have a third turn-up 142, and the two first turn-ups 1411, the two second turn-ups 1412 and the two third turn-ups 142 are alternately arranged and connected on the peripheral edge of the first case 11 to form a turn-up structure 14 in a ring shape in three-dimensional space.

The second casing 12 includes a second flat plate 122 and two second side plates 121, and lower ends of the two second side plates 121 are respectively connected to both ends of the second flat plate 122 in the X direction. The second flat plate 122 has first flanges 1311 at both side edges in the width direction, second flanges 1312 at both side edges in the length direction of each second side plate 121, third flanges 132 at the upper end edge of each second side plate 121, and two first flanges 1311, two second flanges 1312, and two third flanges 132 alternately arranged and connected on the peripheral edge of the second case 12 to form a hemming structure 14 in a ring shape in three-dimensional space. Since the first flange 1311 is folded in the Z direction with respect to the first flat plate 112, the second flange 1312 is folded in the X direction with respect to the first side plate 111, and the third flange 132 is folded in the X direction with respect to the first side plate 111, the size of the first casing 11 in the Y direction can be reduced, so that the installation space of the casing assembly 10 in the Y direction can be reduced, and the space utilization of the casing assembly 10 can be improved.

The first flange 1311 is in clamping fit with the first curled edge 1411, the second flange 1312 is in clamping fit with the second curled edge 1412, and the third flange 132 is in clamping fit with the third curled edge 142, so that the first box 11 and the peripheral edge are in clamping fit with the Zhou Yanka of the second box 12, and sealing connection is achieved.

The seal 15 includes a lateral seal portion 151 (the lateral seal portion 151 includes a first seal bar 1511 and a second seal bar 1512), the first seal bar 1511 extending in the longitudinal direction of the tank assembly 10 and being located between the first bead 1411 and the first bead 1311, the second seal bar 1512 extending in the height direction of the tank assembly 10 and being located between the second bead 1412 and the second bead 1312, and a third seal bar 152 extending in the width direction of the tank assembly 10 and being located between the third bead 142 and the third bead 132, the two first seal bars 1511, the two second seal bars 1512, and the two third seal bars 152 being alternately arranged and connected on the peripheral edge of the first tank 11 or the second tank 12, so that the peripheral edges of the first tank 11 and the second tank 12 are brought into sealing connection.

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 (14)

1. A battery case assembly, comprising:

the first box body and the second box body are connected to define a containing cavity, the containing cavity is used for containing a plurality of battery cells, the periphery of one of the first box body and the second box body is provided with a hemming structure, the periphery of the other of the first box body and the second box body is provided with a flanging structure, and at least one part of the flanging structure is inserted into a clamping groove defined by the hemming structure so as to realize clamping fit with the hemming structure;

the flanging structure comprises a lateral flanging, one of the first box body and the second box body comprises a first side plate, the flanging structure comprises a lateral flanging and the lateral flanging is connected with the edge of the first side plate, and the lateral flanging and the first side plate are oppositely arranged in the width direction of the box body assembly so as to be matched with the lateral flanging in a clamping manner.

2. The battery case assembly of claim 1, wherein the lateral flange comprises a first flange, the lateral flange comprising a first bead snap-fit with the first flange;

The first turned-up edge is connected to one end edge of the first side plate in the height direction, the length direction of the first turned-up edge and the length direction of the first turned-up edge extend along the length direction of the box assembly, and the width direction of the first turned-up edge extends along the height direction of the box assembly.

3. The battery case assembly of claim 1, wherein the lateral flange comprises a second flange, the lateral flange comprising a second flange snap-fit with the second flange;

the first side plate is connected with the second curled edge at least at one end edge in the length direction, the second curled edge and the length direction of the second curled edge extend along the height direction of the box body assembly, and the width direction of the second curled edge extends along the length direction of the box body assembly.

4. The battery case assembly according to claim 1, wherein the burring structure includes a third burring, the one of the first case and the second case further includes a first plate connected to one end in a height direction of the first side plate, the burring structure includes a third beading, and at least one end edge in a length direction of the first plate is connected to the third beading;

The third flanging is oppositely arranged with the first flat plate in the height direction of the box body assembly so as to be matched with the third flanging in a clamping manner.

5. The battery case assembly according to claim 4, wherein the third bead and the third bead each have a length direction extending in a width direction of the case assembly, and the third bead has a width direction extending in the length direction of the case assembly.

6. The battery case assembly according to claim 4, wherein the number of the first side plates is two, and two of the first side plates are disposed opposite to each other in the first flat plate width direction.

7. The battery case assembly according to claim 4, wherein one end of the first flat plate and one end of the first side plate are in transitional connection through a transitional plate, the lateral flange and the third flange are in transitional connection through a connecting flange, and the connecting flange is arranged opposite to the transitional plate and is matched in shape;

wherein, connect the turn-ups and form the arc turn-ups, perhaps, connect the turn-ups for the slope of third turn-ups sets up.

8. The battery case assembly according to claim 4, wherein the other of the first case and the second case includes:

The second flat plate and the first flat plate are oppositely arranged in the height direction of the box assembly;

the second side plate is connected with one end edge of the second flat plate in the length direction of the box body assembly along one end edge of the second side plate in the height direction;

the side flanging is connected to the second flat plate and two side edges of the second side plate in the width direction of the box body assembly, and the third flanging is connected to one end edge of the second side plate away from the second flat plate.

9. The battery case assembly according to claim 8, wherein the number of the second side plates is two, and the two second side plates are disposed opposite to each other in the length direction of the second flat plate.

10. The battery case assembly of claim 8, wherein the first case includes the first plate and two first side plates, and the second case includes the second plate and two second side plates.

11. The battery case assembly according to any one of claims 1 to 10, further comprising:

and at least one part of the sealing piece is positioned in the clamping groove and is clamped between the flanging structure and the hemming structure.

12. The battery housing assembly of any one of claims 1-10, wherein the first housing is an integral piece and the second housing is an integral piece.

13. A battery characterized by a housing assembly comprising a battery according to any one of claims 1-12.

14. An electrical device comprising a battery according to claim 13.