CN219696618U - Battery box, battery and electric equipment - Google Patents

Abstract

The embodiment of the application provides a battery box, a battery and electric equipment. The battery box body comprises a body and an expansion beam, and the body is used for accommodating the battery monomers; the expansion beam is arranged in the body, the expansion beam is used for being abutted with the battery cell so as to resist the expansion force of the battery cell, the expansion beam comprises a bearing piece and a partition piece, the bearing piece is provided with a containing cavity extending along a first direction, the partition piece is arranged in the containing cavity and divides the containing cavity into a plurality of bearing cavities sequentially distributed along a second direction, the bearing cavity comprises a first bearing cavity and a second bearing cavity, the first bearing cavity is jointly limited by the bearing piece and the partition piece, the second bearing cavity is limited by the partition piece, the partition piece comprises a first partition wall, two opposite ends of the first partition wall are respectively connected with the bearing piece, the first partition wall is configured to limit the first bearing cavity with the bearing piece, and the first partition wall divides the containing cavity into two first bearing cavities in the second direction. The technical scheme provided by the application can improve the reliability of the battery.

Description

Battery box, battery and electric equipment

Technical Field

The application relates to the technical field of battery production, in particular to a battery box, a battery and electric equipment.

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.

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

Disclosure of Invention

The utility model provides a battery box, a battery and electric equipment, which can improve the reliability of the battery.

The utility model is realized by the following technical scheme:

in a first aspect, the present utility model provides a battery case comprising: the body is used for accommodating the battery cells; the expansion beam is arranged in the body, the expansion beam is used for being abutted with the battery cell so as to resist the expansion force of the battery cell, the expansion beam comprises a bearing piece and a partition piece, the bearing piece is provided with a containing cavity extending along a first direction, the partition piece is arranged in the containing cavity and divides the containing cavity into a plurality of bearing cavities distributed in sequence along a second direction, the plurality of bearing cavities comprise a first bearing cavity and a second bearing cavity, the first bearing cavity is jointly defined by the bearing piece and the partition piece, the second bearing cavity is defined by the partition piece, the partition piece comprises a first partition wall, two opposite ends of the first partition wall are respectively connected with the bearing piece, the first partition wall is configured to define the first bearing cavity with the bearing piece, the first partition wall divides the containing cavity into two first bearing cavities in the second direction, and the first partition wall intersects the second direction.

According to the technical scheme, the accommodating cavity of the expansion beam is arranged to resist the expansion force of the battery monomer. When the battery monomer has the inflation trend, the expansion beam butt battery monomer utilizes the deformation of holding the chamber to absorb and transmit the inflation power, has reduced the probability that the battery monomer warp because of the inflation power. Meanwhile, the accommodating cavity of the bearing piece is divided into a plurality of bearing cavities through the separating piece, namely a plurality of reinforcing ribs are added in the accommodating cavities, so that the structural strength of the expansion beam and the capability of resisting the expansion force of the battery monomer are improved, the structural strength of the battery box body is improved, and the reliability of the battery is improved.

In some embodiments, the partition further includes a second partition wall, a third partition wall, a fourth partition wall, and a fifth partition wall that are sequentially connected, where the second partition wall and the fourth partition wall are respectively connected to two walls of the carrier that are opposite along a third direction, the third partition wall and the fifth partition wall are disposed at intervals along the second direction, and the second partition wall, the third partition wall, the fourth partition wall, and the fifth partition wall define the second carrying cavity, and the third direction intersects a plane in which the first direction and the second direction are located.

In the embodiment of the application, the first partition wall and the fifth partition wall are connected with the bearing piece and define the first bearing cavity and the second bearing cavity, the first partition wall and the fifth partition wall are used as reinforcing ribs, the second partition wall, the third partition wall, the fourth partition wall and the fifth partition wall are sequentially connected, the second partition wall and the fifth partition wall are connected with the bearing piece, the stability of the second bearing cavity is improved, the structural strength of the expansion beam and the capability of resisting the expansion force of a battery monomer are improved, the structural strength of the battery box body is improved, and the reliability of the battery is improved.

In some embodiments, the third partition wall is connected to the bottom wall of the body.

In the embodiment of the application, the third partition wall is connected with the bottom wall, so that the connection between the expansion beam and the body is more stable, the reliability of the expansion beam is improved, and the reliability of the battery box body is also improved.

In some embodiments, one end of the first partition wall is connected to the carrier through the second partition wall, the first partition wall and the fifth partition wall are spaced along the second direction, and the first partition wall, the second partition wall, the fifth partition wall and the carrier define the first carrier cavity.

In the embodiment of the application, the first partition wall is connected with the bearing piece through the second partition wall, so that the connection stability of the first partition wall is improved, the reliability of the expansion beam is improved, the first partition wall and the fifth partition wall are used as reinforcing ribs, the accommodating cavity of the bearing piece is divided into the first bearing cavity and the second bearing cavity, the structural strength of the expansion beam and the capability of resisting the expansion force of the battery monomer are improved, the structural strength of the battery box body is improved, and the reliability of the battery is improved.

In some embodiments, the partition further comprises a sixth partition wall connected to the carrier, the other end of the first partition wall being connected to the carrier through the sixth partition wall.

In the embodiment of the application, the sixth partition wall is connected with the bearing piece, and the first partition wall is connected with the bearing piece through the sixth partition wall, so that the connection stability of the first partition wall is improved, the reliability of the expansion beam is improved, the first partition wall and the fifth partition wall are used as reinforcing ribs, the accommodating cavity of the bearing piece is divided into the first bearing cavity and the second bearing cavity, the structural strength of the expansion beam and the capability of resisting the expansion force of a battery monomer are improved, the structural strength of the battery box body is improved, and the reliability of the battery is improved.

In some embodiments, the divider further comprises a seventh divider wall having one end connected to an end of the sixth divider wall facing away from the first divider wall, the other end connected to a wall of the carrier opposite the sixth divider wall, the seventh divider wall configured to define the first carrier cavity with the carrier.

In the embodiment of the application, the seventh partition wall is used as the reinforcing rib to divide the accommodating cavity into a plurality of first bearing cavities, so that the structural strength of the expansion beam and the capability of resisting the expansion force of the battery monomer are improved, the structural strength of the battery box body is improved, and the reliability of the battery is improved.

In some embodiments, the partition further comprises an eighth partition wall connected to the carrier, the other end of the seventh partition wall being connected to the carrier through the eighth partition wall.

In the embodiment of the application, the eighth partition wall is connected with the bearing piece, and the seventh partition wall is connected with the bearing piece through the eighth partition wall, so that the stability of the connection of the seventh partition wall is improved, the structural strength and stability of the expansion beam are improved, and the reliability of the battery box body is also improved.

In some embodiments, the separator further comprises a ninth partition wall, the fifth partition wall being connected to the second partition wall by the ninth partition wall.

In the embodiment of the application, the ninth partition wall is connected with the second partition wall, the second partition wall is connected with the bearing piece, and the fifth partition wall is connected with the bearing piece through the ninth partition wall and the second partition wall, so that the stability of the connection of the fifth partition wall is improved, and the structural strength and the stability of the expansion beam are improved, namely the reliability of the battery box body is improved.

In some embodiments, the separator is integrally formed.

In the embodiment of the application, the partition piece is integrally formed, and compared with the connection of a plurality of independent partition walls, the integrally formed partition piece is more stable, so that the structural strength of the partition piece, namely the structural strength of the expansion beam, is improved, and the reliability of the battery box body is further improved.

In some embodiments, the carrier includes a first wall, a second wall, and a third wall, one end of the first wall is connected to the bottom wall of the body, one end of the third wall is connected to the bottom wall, the other end of the first wall and the other end of the third wall are connected to opposite ends of the second wall along a third direction, the first wall, the second wall, and the third wall together define the accommodating cavity, the first wall is configured to abut against the battery cell, and the third direction intersects a plane in which the first direction and the second direction are located.

In some embodiments, the distance between the first wall and the third wall increases gradually from the second wall to the direction of the bottom wall.

In the embodiment of the application, the third wall is arranged to form an included angle with the first wall, and is used as an inclined wall, so that the supporting function can be realized, the capability of the expansion beam for absorbing and buffering the expansion force of the battery monomer is improved, and the reliability of the battery box body is further improved.

In some embodiments, the carrier further comprises a first connection portion disposed at an end of the first wall remote from the second wall, extending in the third direction and away from the third wall; and/or, the bearing piece further comprises a second connecting part, wherein the second connecting part is arranged at one end, far away from the second wall, of the third wall, and extends along the third direction and far away from the first wall.

In the embodiment of the application, the expansion beam is connected with the body through the first connecting part and/or the second connecting part, so that the structural strength and the reliability of the battery box body are improved.

In some embodiments, the body includes a bottom wall and a side wall, the side wall is enclosed around the bottom wall, the bottom wall is connected to one end of the side wall, the other end of the side wall encloses into an opening, the expansion beam is disposed on the bottom wall, and two ends of the bearing member along the first direction are respectively connected to the side wall.

In some embodiments, the battery case further includes a connection member, and both ends of the carrier along the first direction are connected to the side walls through the connection member, respectively.

In the embodiment of the application, the bearing piece is connected with the body through the connecting piece, so that the connection stability of the expansion beam is improved, and the structural strength and the reliability of the battery box body are improved.

In some embodiments, the battery box further comprises a securing member disposed on a side of the bottom wall facing away from the expansion beam.

In a second aspect, the present application also provides a battery comprising: the battery case and battery cell according to any one of the embodiments of the first aspect, the battery cell being housed inside the body.

In a third aspect, the present application also provides a powered device, comprising a battery according to any of the embodiments of the second aspect, the battery being configured to provide electrical energy to the powered device.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

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

FIG. 3 is a schematic structural diagram of a body according to some embodiments of the present application;

FIG. 4 is an exploded view of the body of FIG. 3;

FIG. 5 is a schematic view of an expansion beam according to some embodiments of the present application;

fig. 6 is a schematic structural view of an expansion beam according to other embodiments of the present application.

Icon: 1-a battery box body; 10-a body; 11-a bottom wall; 12-side walls; 13-a cover; 20-expansion beams; 21-a carrier; 211-a first wall; 212-a second wall; 213-a third wall; 214-a first connection; 215-a second connection; 22-a separator; 221-a first partition wall; 222-a second partition wall; 223-a third partition wall; 224-fourth dividing wall; 225-a fifth partition wall; 226-sixth dividing wall; 227-seventh partition walls; 228-eighth partition walls; 229-ninth partition walls; 23-a receiving chamber; 241-a first load-bearing chamber; 242-a second load bearing chamber; 30-connecting piece; 40-fixing piece; 100-cell; 110-battery cell; 1000-vehicle; 1100-a controller; 1200-motor; y-a first direction; z-a second direction; x-third direction.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the 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 in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the 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 described embodiments of the application may be combined with other embodiments.

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

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

The term "plurality" as used herein means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In some embodiments, the battery may be a battery module, and when there are a plurality of battery cells, the plurality of battery cells are arranged and fixed to form one battery module.

In some embodiments, the battery may be a battery pack including a case and a battery cell, the battery cell or battery module being housed in the case.

In some embodiments, the tank may be part of the chassis structure of the vehicle. For example, a portion of the tank may become at least a portion of the floor of the vehicle, or a portion of the tank may become at least a portion of the cross member and the side member of the vehicle.

In some embodiments, the battery may be an energy storage device. The energy storage device comprises an energy storage container, an energy storage electric cabinet and the like.

In the embodiment of the application, the battery cell can be a secondary battery, and the secondary battery refers to a battery cell which can activate the active material in a charging mode to continue to use after the battery cell discharges.

The battery cell may be, but is not limited to, a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, and the like.

As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shaped battery cell, and the prismatic battery cell includes a square-case battery cell, a blade-shaped battery cell, a polygonal-prismatic battery cell, such as a hexagonal-prismatic battery cell, etc., and embodiments of the present application are not particularly limited.

Currently, from the development of market situation, batteries have been widely used in electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and various fields such as electric tools, unmanned aerial vehicles, and energy storage devices. With the continuous expansion of the field of battery use, the market demand is also continuously expanding.

The development of battery technology is to consider various design factors, such as energy density, cycle life, discharge capacity, charge-discharge rate, and other performance parameters, and in addition, as environmental conditions and/or internal conditions of the battery change, the reliability problem of the battery is one of the important factors.

Currently, batteries generally pass through a battery case to accommodate the battery cells. During use of the battery, the battery cells may expand due to charge and discharge or other factors. The expansion phenomenon of the battery monomer can possibly lead to deformation of a battery box body containing the battery monomer, influence the structural strength and the reliability of the battery box body, and also can influence the normal use of the battery due to the deformation of the battery box body, so as to influence the reliability of the battery.

Based on the above-mentioned consideration, in order to reduce the risk of battery cell expansion and the problem of poor reliability of the battery caused by deformation of the battery box, the embodiment of the application provides a battery box, which comprises a body and an expansion beam, wherein the expansion beam is arranged in the body and is used for abutting against the battery cell so as to resist the expansion force of the battery cell. The expansion beam comprises a bearing piece and a partition piece, wherein the bearing piece is provided with a containing cavity extending along a first direction, the partition piece is arranged in the containing cavity, and the containing cavity is divided into a plurality of bearing cavities which are distributed in sequence along a second direction.

By providing the receiving cavity of the expansion beam, the expansion force of the battery cell is resisted. When the battery monomer has the inflation trend, the expansion beam butt battery monomer utilizes the deformation of holding the chamber to absorb and transmit the inflation power, has reduced the probability that the battery monomer warp because of the inflation power. Meanwhile, the accommodating cavity of the bearing piece is divided into a plurality of bearing cavities through the separating piece, namely a plurality of reinforcing ribs are added in the accommodating cavities, so that the structural strength of the expansion beam and the capability of resisting the expansion force of the battery monomer are improved, the structural strength of the battery box body is improved, and the reliability of the battery is improved.

The battery disclosed by the embodiment of the application can be used in electric equipment such as vehicles, ships or aircrafts, but is not limited to the electric equipment. The power supply system of the electric equipment can be composed by using the battery provided with the battery disclosed by the application.

The embodiment of the application provides electric equipment using a battery as a power supply, wherein the electric equipment can be, but is not limited to, a mobile phone, a tablet personal computer, a notebook computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric automobile, 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 embodiments take a powered 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 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. Battery 100 may be used to power vehicle 1000, for example, battery 100 may be used as an operating power source for vehicle 1000, for the circuitry of vehicle 1000, such as for the operational power requirements of vehicle 1000 during start-up, navigation, and operation.

The vehicle 1000 may also include a controller 1100 and a motor 1200, the controller 1100 being configured to control the battery 100 to power the motor 1200, 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, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present application. The battery 100 may further include a battery case 1, and the battery cells 110 are accommodated in the battery case 1. The battery case 1 is used to provide an accommodating space for the battery cell 110, and the battery case 1 may have various structures. In some embodiments, the battery case 1 may include a cover 13 and a body 10, the cover 13 and the body 10 being covered with each other, the cover 13 and the body 10 together defining a receiving space for receiving the battery cell 110. The body 10 may have a hollow structure with an opening at one end, the cover 13 may have a plate-shaped structure, and the cover 13 covers the opening side of the body 10, so that the cover 13 and the body 10 together define an accommodating space; the cover 13 and the body 10 may be hollow structures with one side open, and the open side of the cover 13 is closed to the open side of the body 10.

In the battery 100, the number of the battery cells 110 may be plural, and the plural battery cells 110 may be connected in series, parallel, or series-parallel, where series-parallel refers to both of the plural battery cells 110 being connected in series and parallel. The plurality of battery cells 110 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 110 is accommodated in the battery box body 1; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 110 in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in the battery case 1. The battery 100 may further include other structures, for example, the battery 100 may further include a bus bar member for making electrical connection between the plurality of battery cells 110.

The battery cell 110 may be a secondary battery or a primary battery; the battery cell 110 may also be a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery, but is not limited thereto.

Referring to fig. 2 to 6, fig. 3 is a schematic structural diagram of a body according to some embodiments of the present application; FIG. 4 is an exploded view of the body of FIG. 3; FIG. 5 is a schematic view of an expansion beam according to some embodiments of the present application; fig. 6 is a schematic structural view of an expansion beam according to other embodiments of the present application. The embodiment of the application provides a battery box 1, which comprises a body 10 and an expansion beam 20, wherein the body 10 is used for accommodating a battery monomer; the expansion beam 20 is disposed inside the body 10, the expansion beam 20 is used for abutting against the battery cell to resist the expansion force of the battery cell, the expansion beam 20 comprises a bearing 21 and a partition 22, the bearing 21 is provided with a containing cavity 23 extending along a first direction Y, the partition 22 is disposed inside the containing cavity 23 and divides the containing cavity 23 into a plurality of bearing cavities sequentially distributed along a second direction Z, the plurality of bearing cavities comprise a first bearing cavity 241 and a second bearing cavity 242, the first bearing cavity 241 is jointly defined by the bearing 21 and the partition 22, and the second bearing cavity 242 is defined by the partition 22, wherein in some embodiments, the partition 22 comprises a first partition wall 221, opposite ends of the first partition wall 221 are respectively connected with the bearing 21, the first partition wall 221 is configured to define a first bearing cavity 241 with the bearing 21, the first partition wall 221 divides the containing cavity 23 into two first bearing cavities 241 in the second direction Z, and the first bearing cavity 241 intersects with the second direction Z.

In some embodiments, the carrier 21 and the divider 22 may be provided separately, as two relatively independent elements.

In the figure, the direction indicated by the letter Y may be a first direction, and the direction indicated by the letter Z may be a second direction.

In some embodiments, the first direction Y and the second direction Z may be perpendicular to each other.

According to the technical scheme of the embodiment of the application, the accommodating cavity 23 of the expansion beam 20 is arranged to resist the expansion force of the battery cell 110. When the battery cell 110 has a tendency to expand, the expansion beam 20 abuts against the battery cell 110, and the expansion force is absorbed and transmitted by utilizing the deformation of the accommodating cavity 23, so that the probability of deformation of the battery cell 110 due to the expansion force is reduced. Meanwhile, the accommodating cavity 23 of the bearing piece 21 is divided into a plurality of bearing cavities by the dividing piece 22, namely, a plurality of reinforcing ribs are added in the accommodating cavity 23, so that the structural strength of the expansion beam 20 and the capability of resisting the expansion force of the battery cell 110 are improved, the structural strength of the battery box 1 is improved, and the reliability of the battery 100 is improved.

In some embodiments, both ends of the first partition wall 221 of the partition 22 may be directly connected to the carrier 21. In other embodiments, both ends of the first partition wall 221 of the partition 22 may be connected to other walls of the partition 22, and the other walls of the partition 22 connected to the first partition wall 221 may be connected to the carrier 21.

In some embodiments, the first partition wall 221 may only define the first bearing chamber 241 in combination with the bearing 21. In other embodiments, the first partition wall 221 may also define a first bearing chamber 241 with other walls of the bearing 21 and the partition 22.

In some embodiments, the first partition wall 221 is directly connected to the carrier 21 by spot welding or plug welding. The first partition wall 221 is connected to the carrier 21 by other walls, which may be plug welded. In the embodiment of the application, the first partition wall 221 is connected with the bearing member 21 and defines the first bearing cavity 241, and the first partition wall 221 serves as a reinforcing rib, so that the structural strength of the expansion beam 20 and the capability of resisting the expansion force of the battery cell 110 are improved, the structural strength of the battery box 1 is improved, and the reliability of the battery 100 is improved.

Please refer to fig. 2, 5 and 6. In some embodiments, the partition 22 further includes a second partition wall 222, a third partition wall 223, a fourth partition wall 224, and a fifth partition wall 225 connected in sequence, where the second partition wall 222 and the fourth partition wall 224 are respectively connected to two walls of the carrier 21 opposite to each other along the third direction X, the third partition wall 223 and the fifth partition wall 225 are spaced apart along the second direction Z, and the second partition wall 222, the third partition wall 223, the fourth partition wall 224, and the fifth partition wall 225 define a second carrier cavity 242, and the third direction X intersects with a plane in which the first direction Y and the second direction Z lie.

In the figure, the direction indicated by the letter X may be a third direction. In some embodiments, the third direction X may be perpendicular to a plane in which the first direction Y and the second direction Z lie.

In some embodiments, the second partition wall 222 and the fourth partition wall 224 may be respectively bonded to two opposite walls of the carrier 21 along the third direction X, and the bonding manner may be welding.

In some embodiments, opposite ends of the fifth dividing wall 225 are each connected to the carrier 21.

In some embodiments, both ends of the fifth partition wall 225 may be directly connected to the carrier 21. In other embodiments, both ends of the fifth partition wall 225 may be connected to other walls of the partition 22, and the other walls connected to the fifth partition wall 225 may be connected to the carrier 21.

In the embodiment of the application, the first partition wall 221 and the fifth partition wall 225 are connected with the carrier 21, and define the first carrying cavity 241 and the second carrying cavity 242, the first partition wall 221 and the fifth partition wall 225 are used as reinforcing ribs, the second partition wall 222, the third partition wall 223, the fourth partition wall 224 and the fifth partition wall 225 are sequentially connected, the second partition wall 222 and the fifth partition wall 225 are connected with the carrier 21, so that the stability of the second carrying cavity 242 is improved, the structural strength of the expansion beam 20 and the capability of resisting the expansion force of the battery cell 110 are improved, the structural strength of the battery box 1 is improved, and the reliability of the battery 100 is improved.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the third partition wall 223 is connected to the bottom wall 11 of the body 10.

In some embodiments, the third partition wall 223 may be connected to the bottom wall 11 by welding. In other embodiments, the third partition wall 223 may be attached to the bottom wall 11 by gluing.

In some embodiments, the third partition wall 223 may be disposed to extend along the third direction X, and the third partition wall 223 is attached to the bottom wall 11.

In the embodiment of the present application, the third partition wall 223 is connected with the bottom wall 11, so that the connection between the expansion beam 20 and the body 10 is more stable, and the reliability of the expansion beam 20, that is, the reliability of the battery box 1 is improved.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, one end of the first partition wall 221 is connected to the carrier 21 through the second partition wall 222, the first partition wall 221 and the fifth partition wall 225 are spaced apart along the second direction Z, and the first partition wall 221, the second partition wall 222, the fifth partition wall 225 and the carrier 21 define a first carrying chamber 241.

In some embodiments, the first partition wall 221 is connected to an end of the second partition wall 222 away from the third partition wall 223, and the first partition wall 221 is connected to the carrier 21 through the second partition wall 222, and in the second direction Z, a first carrying cavity 241 is defined between the first partition wall 221 and the fifth partition wall 225, and the first carrying cavity 241 is defined by the first partition wall 221, a portion of the second partition wall 222, the fifth partition wall 225 and the carrier 21.

In the embodiment of the application, the first partition wall 221 is connected with the carrier 21 through the second partition wall 222, so that the connection stability of the first partition wall 221 is improved, and the reliability of the expansion beam 20 is improved, and the first partition wall 221 and the fifth partition wall 225 serve as reinforcing ribs to divide the accommodating cavity 23 of the carrier 21 into the first carrying cavity 241 and the second carrying cavity 242, so that the structural strength of the expansion beam 20 and the capability of resisting the expansion force of the battery cell 110 are improved, the structural strength of the battery box 1 is improved, and the reliability of the battery 100 is improved.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the partition 22 further includes a sixth partition wall 226, the sixth partition wall 226 being connected to the carrier 21, and the other end of the first partition wall 221 being connected to the carrier 21 through the sixth partition wall 226.

In some embodiments, an end of the first partition wall 221 remote from the second partition wall 222 is connected to the sixth partition wall 226, and the first partition wall 221 is connected to the carrier 21 through the sixth partition wall 226.

In some embodiments, the sixth partition 226 is attached to the carrier 21 by welding.

In the embodiment of the application, the sixth partition wall 226 is connected with the carrier 21, and the first partition wall 221 is connected with the carrier 21 through the sixth partition wall 226, so that the connection stability of the first partition wall 221 is improved, and the reliability of the expansion beam 20 is improved, and the first partition wall 221 and the fifth partition wall 225 serve as reinforcing ribs to divide the accommodating cavity 23 of the carrier 21 into the first bearing cavity 241 and the second bearing cavity 242, so that the structural strength of the expansion beam 20 and the capability of resisting the expansion force of the battery cell 110 are improved, the structural strength of the battery box 1 is improved, and the reliability of the battery 100 is improved.

Please refer to fig. 2, 3 and 6. In some embodiments, the partition 22 further includes a seventh partition 227, one end of the seventh partition 227 is connected to an end of the sixth partition 226 facing away from the first partition 221, the other end of the seventh partition 227 is connected to a wall of the carrier 21 opposite the sixth partition 226, and the seventh partition 227 is configured to define a first carrier cavity 241 with the carrier 21.

In some embodiments, the seventh partition wall 227, the first partition wall 221, the fifth partition wall 225, and the third partition wall 223 are sequentially disposed at intervals in the second direction Z and in a direction approaching the bottom wall 11.

In some embodiments, one end of the seventh partition wall 227 is connected to one end of the sixth partition wall 226 remote from the first partition wall 221, and the other end of the seventh partition wall 227 is connected to the carrier 21.

In some embodiments, the seventh divider 227 may be directly connected to the carrier 21. In other embodiments, the seventh divider wall 227 may be connected to the carrier 21 by other walls of the divider.

In some embodiments, seventh divider wall 227 may define a first load chamber 241 in combination with load bearing member 21. In other embodiments, the seventh divider wall 227 may define another first load chamber 241 in combination with the sixth divider wall 226, the first divider wall 221, and the load bearing member 21.

The first bearing chamber 241 formed by the seventh partition wall 227 and the first bearing chamber 241 formed by the fifth partition wall 225 are different first bearing chambers 241.

In the embodiment of the present application, the seventh partition wall 227 serves as a reinforcing rib to divide the accommodating cavity 23 into a plurality of first bearing cavities 241, so that the structural strength of the expansion beam 20 and the capability of resisting the expansion force of the battery cell 110 are improved, the structural strength of the battery case 1 is improved, and the reliability of the battery 100 is improved.

Please refer to fig. 2, 3 and 6. In some embodiments, the partition 22 further includes an eighth partition wall 228, the eighth partition wall 228 is connected to the carrier 21, and the other end of the seventh partition wall 227 is connected to the carrier 21 through the eighth partition wall 228.

In some embodiments, the eighth partition 228 is attached to the inner wall of the carrier 21, and the eighth partition 228 may be attached to the carrier 21 by welding.

In some embodiments, the eighth partition wall 228 may extend along the inner wall of the carrier 21 and in a direction proximate to the bottom wall 11. In some embodiments, the eighth partition wall 228 may also extend along the inner wall of the carrier 21 and away from the bottom wall 11.

In some embodiments, the end of the eighth divider wall 228 remote from the seventh divider wall 227 may also be connected to other divider walls, the seventh divider wall 227 defining other load bearing cavities in combination with the other divider walls.

In the embodiment of the application, the eighth partition wall 228 is connected with the carrier 21, and the seventh partition wall 227 is connected with the carrier 21 through the eighth partition wall 228, so that the connection stability of the seventh partition wall 227 is improved, and the structural strength and stability of the expansion beam 20, that is, the reliability of the battery box body 1, are improved.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the partition 22 further includes a ninth partition wall 229, and the fifth partition wall 225 is connected to the second partition wall 222 by the ninth partition wall 229.

In some embodiments, the ninth separator 229 may be connected to an end of the fifth separator 225 remote from the fourth separator 224, and the ninth separator 229 is attached to the second separator 222.

In some embodiments, the ninth separator wall 229 may be welded to the second separator wall 222.

In some embodiments, the ninth separator wall 229 may extend along the inner wall of the carrier 21 and in a direction proximate to the bottom wall 11. In some embodiments, the ninth separator wall 229 may also extend along the inner wall of the carrier 21 and away from the bottom wall 11.

In some embodiments, the ninth separator wall 229 is attached to the second separator wall 222 by welding the ninth separator wall 229 to the carrier 21 by double-layer spot welding.

In the embodiment of the application, the ninth partition wall 229 is connected with the second partition wall 222, the second partition wall 222 is connected with the carrier 21, and the fifth partition wall 225 is connected with the carrier 21 through the ninth partition wall 229 and the second partition wall 222, so that the connection stability of the fifth partition wall 225 is improved, and the structural strength and stability of the expansion beam 20, namely the reliability of the battery box body 1, are improved.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the separator 22 is integrally formed.

In some embodiments, the separator 22 may be a sheet metal member, and the separator 22 may form the first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth separator walls 221, 222, 223, 224, 225, 226, 227, 228, and 229 connected in sequence by rolling.

In the embodiment of the application, the partition 22 is integrally formed, and compared with the connection of a plurality of independent partition walls, the integrally formed partition 22 is more stable, so that the structural strength of the partition 22, namely the structural strength of the expansion beam 20 is improved, and the reliability of the battery box 1 is further improved.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the carrier 21 includes a first wall 211, a second wall 212, and a third wall 213, one end of the first wall 211 is connected to the bottom wall 11 of the body 10, one end of the third wall 213 is connected to the bottom wall 11, the other end of the first wall 211 and the other end of the third wall 213 are connected to opposite ends of the second wall 212 along a third direction X, the first wall 211, the second wall 212, and the third wall 213 together define a receiving cavity 23, the first wall 211 is for abutting against the battery cell 110, and the third direction X intersects a plane in which the first direction Y and the second direction Z lie.

In some embodiments, the carrier 21 may be integrally formed. The carrier 21 may be a sheet metal part, and the carrier 21 may be formed by punching to form a first wall 211, a second wall 212, and a third wall 213, which are sequentially connected.

In some embodiments, to facilitate abutting the battery cell 110, the first wall 211 may be disposed extending along the second direction Z, and the wall of the battery cell 110 for abutting the first wall 211 may also be disposed extending along the second direction Z.

In some embodiments, the second wall 212 may be disposed extending along the third direction X, opposite the side wall 12 of the body 10.

In some embodiments, the second and eighth dividing walls 222, 228 are in abutting connection with the third wall 213, and the fourth and sixth dividing walls 224, 226 may be in abutting connection with the first wall 211.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the distance between the first wall 211 and the third wall 213 increases gradually from the second wall 212 to the direction of the bottom wall 11.

In some embodiments, the first wall 211 may extend along the second direction Z, and the third wall 213 may extend obliquely along the second direction Z, that is, the first wall 211 may form an angle with the third wall 213.

In the embodiment of the present application, by setting the third wall 213 to form an included angle with the first wall 211, the third wall 213 serves as an inclined wall, which can play a supporting role, and improve the capability of the expansion beam 20 to absorb the expansion force of the buffer battery cell 110, thereby improving the reliability of the battery case 1.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the carrier 21 further includes a first connection portion 214, where the first connection portion 214 is disposed at an end of the first wall 211 away from the second wall 212, and extends along the third direction X and away from the third wall 213; and/or, the carrier 21 further includes a second connecting portion 215, where the second connecting portion 215 is disposed at an end of the third wall 213 away from the second wall 212, and extends along the third direction X and away from the first wall 211.

In some embodiments, the carrier 21 may be provided with the first and second connection parts 214 and 215 at the same time, and the first and second connection parts 214 and 215 may be connected with the body 10 by welding.

In some embodiments, in the second direction Z, the plane in which the first connection portion 214 and the second connection portion 215 lie is closer to the bottom wall 11 of the body 10 than the plane in which the third partition wall 223 lies.

In the embodiment of the application, the expansion beam 20 and the body 10 are connected by the first connecting part 214 and/or the second connecting part 215, so that the structural strength and the reliability of the battery box body 1 are improved.

Please refer to fig. 2, 3, 5 and 6. In some embodiments, the body 10 includes a bottom wall 11 and a side wall 12, the side wall 12 is surrounded around the bottom wall 11, the bottom wall 11 is connected to one end of the side wall 12, the other end of the side wall 12 is surrounded to form an opening, the expansion beam 20 is disposed on the bottom wall 11, and two ends of the carrier 21 along the first direction Y are respectively connected to the side wall 12.

In some embodiments, the other end of the side wall 12 encloses an opening, the cover 13 covers the opening, and the other end of the side wall 12 encloses the cover 13.

In some embodiments, the bottom wall 11 may be connected with the first connection portion 214, the second connection portion 215, and the third partition wall 223.

Please refer to fig. 2, 3-6. In some embodiments, the battery case 1 further includes a connection member 30, and both ends of the carrier 21 in the first direction Y are connected to the side walls 12 through the connection member 30, respectively.

In some embodiments, the connecting member 30 may be a sheet metal member, and two connecting portions are formed by bending, one connecting portion is attached to the first wall 211 or the third wall 213, and the other connecting portion is attached to the side wall 12 in the first direction Y.

In the embodiment of the application, the bearing piece 21 is connected with the body 10 through the connecting piece 30, so that the connection stability of the expansion beam 20 is improved, and the structural strength and the reliability of the battery box body 1 are improved.

Please refer to fig. 2, 3-6. In some embodiments, the connector 30 is connected at one end to the expansion beam 20 and at the other end to the side wall 12.

In some embodiments, the battery case 1 further includes a fixing member 40, and the fixing member 40 is disposed on a side of the bottom wall 11 facing away from the expansion beam 20.

In some embodiments, the fixing member 40 may be a reinforcing rib, and the fixing member 40 is disposed at the outer side of the bottom wall 11 to improve the reliability of the battery case 1.

In some embodiments, the fixing member 40 is disposed outside the bottom wall 11, and the first connecting portion 214 and the second connecting portion 215 of the carrier 21 are connected to the fixing member 40 by double-sided spot welding.

The present application further provides a battery 100, which includes the battery case 1 and the battery cell 110 of any of the above embodiments, and the battery cell 110 is accommodated in the body 10.

The application also provides electric equipment, which comprises the battery 100 in any embodiment, wherein the battery 100 is used for providing electric energy for the electric equipment.

Referring to fig. 2 to 5. In some embodiments, the carrier 21 has a receiving cavity 23, and the divider 22 divides the receiving cavity 23 into two first carrying cavities 241 and one second carrying cavity 242. The carrier 21 includes a first wall 211, a second wall 212, a third wall 213, a first connection 214, and a second connection 215, and the partition 22 includes a first partition 221, a second partition 222, a third partition 223, a fourth partition 224, a fifth partition 225, a sixth partition 226, and a ninth partition 229. The first and second connection portions 214 and 215 are connected to the bottom wall 11 of the body 10, and the third partition wall 223 is connected to the bottom wall 11 of the body 10. The fourth partition 224 and the sixth partition 226 are bonded to the first wall 211, the second partition 222 is bonded to the third wall 213, and the ninth partition 229 is bonded to the second partition 222. Wherein the first partition wall 221, the second partition wall 222, the fifth partition wall 225, the ninth partition wall 229 and the first wall 211 together define a first bearing chamber 241, the first partition wall 221, the sixth partition wall 226, the first wall 211, the second wall 212 and the third wall 213 together define another first bearing chamber 241, and the second partition wall 222, the third partition wall 223, the fourth partition wall 224 and the fifth partition wall 225 together define a second bearing chamber 242.

Reference is made to fig. 2 to 4 and 6. In some embodiments, the carrier 21 has a receiving cavity 23, and the divider 22 divides the receiving cavity 23 into three first carrying cavities 241 and one second carrying cavity 242. The carrier 21 includes a first wall 211, a second wall 212, a third wall 213, a first connection 214, and a second connection 215, and the partition 22 includes a first partition 221, a second partition 222, a third partition 223, a fourth partition 224, a fifth partition 225, a sixth partition 226, a seventh partition 227, an eighth partition 228, and a ninth partition 229. The first and second connection portions 214 and 215 are connected to the bottom wall 11 of the body 10, and the third partition wall 223 is connected to the bottom wall 11 of the body 10. The fourth partition 224 and the sixth partition 226 are bonded to the first wall 211, the second partition 222 and the eighth partition 228 are bonded to the third wall 213, and the ninth partition 229 is bonded to the second partition 222. Wherein the first partition wall 221, the second partition wall 222, the fifth partition wall 225, the ninth partition wall 229 and the first wall 211 together define a first bearing chamber 241, the first partition wall 221, the sixth partition wall 226, the seventh partition wall 227, the eighth partition wall 228 and the third wall 213 together define a second first bearing chamber 241, the seventh partition wall 227, the first wall 211, the second wall 212 and the third wall 213 together define a third first bearing chamber 241, and the second partition wall 222, the third partition wall 223, the fourth partition wall 224 and the fifth partition wall 225 together define a second bearing chamber 242.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. 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 (17)

1. A battery box, comprising:

the body is used for accommodating the battery cells;

the expansion beam is arranged in the body and is used for being abutted with the battery cell so as to resist the expansion force of the battery cell, the expansion beam comprises a bearing piece and a partition piece, the bearing piece is provided with a containing cavity extending along a first direction, the partition piece is arranged in the containing cavity and divides the containing cavity into a plurality of bearing cavities distributed in sequence along a second direction, the bearing cavities comprise a first bearing cavity and a second bearing cavity, the first bearing cavity is defined by the bearing piece and the partition piece together, and the second bearing cavity is defined by the partition piece;

Wherein the partition includes a first partition wall, opposite ends of the first partition wall are respectively connected with the bearing member, the first partition wall is configured to define the first bearing cavity with the bearing member, the first partition wall partitions the accommodating cavity into two first bearing cavities in the second direction, and the first direction intersects the second direction.

2. The battery case according to claim 1, wherein the partition further comprises a second partition wall, a third partition wall, a fourth partition wall and a fifth partition wall which are sequentially connected, the second partition wall and the fourth partition wall are respectively connected to two walls of the bearing member which are opposite in a third direction, the third partition wall and the fifth partition wall are arranged at intervals in the second direction, the second partition wall, the third partition wall, the fourth partition wall and the fifth partition wall define the second bearing cavity, and the third direction intersects with a plane in which the first direction and the second direction are located.

3. The battery compartment of claim 2, wherein the third dividing wall is connected to the bottom wall of the body.

4. The battery case according to claim 2, wherein one end of the first partition wall is connected to the carrier through the second partition wall, the first partition wall and the fifth partition wall are disposed at intervals in the second direction, and the first partition wall, the second partition wall, the fifth partition wall, and the carrier define the first carrier chamber.

5. The battery case according to claim 4, wherein the partition further comprises a sixth partition wall connected to the carrier, and the other end of the first partition wall is connected to the carrier through the sixth partition wall.

6. The battery box of claim 5, wherein the separator further comprises a seventh separator wall having one end connected to an end of the sixth separator wall facing away from the first separator wall, the seventh separator wall having another end connected to a wall of the carrier opposite the sixth separator wall, the seventh separator wall configured to define the first carrier cavity with the carrier.

7. The battery case according to claim 6, wherein the partition further includes an eighth partition wall connected to the carrier, and the other end of the seventh partition wall is connected to the carrier through the eighth partition wall.

8. The battery case according to claim 7, wherein the partition further includes a ninth partition wall, the fifth partition wall being connected to the second partition wall through the ninth partition wall.

9. The battery case according to any one of claims 1 to 8, wherein the separator is integrally formed.

10. The battery box of claim 1, wherein the carrier comprises a first wall, a second wall, and a third wall, one end of the first wall is connected to the bottom wall of the body, one end of the third wall is connected to the bottom wall, the other end of the first wall and the other end of the third wall are connected to opposite ends of the second wall in a third direction, the first wall, the second wall, and the third wall together define the receiving chamber, the first wall is configured to abut against the battery cell, and the third direction intersects a plane in which the first direction and the second direction lie.

11. The battery compartment of claim 10, wherein the distance between the first wall and the third wall increases gradually from the direction in which the second wall points toward the bottom wall.

12. The battery box of claim 11, wherein the carrier further comprises a first connection portion disposed at an end of the first wall remote from the second wall, extending in the third direction and away from the third wall; and/or, the bearing piece further comprises a second connecting part, wherein the second connecting part is arranged at one end, far away from the second wall, of the third wall, and extends along the third direction and far away from the first wall.

13. The battery box of claim 1, wherein the body comprises a bottom wall and a side wall, the side wall is surrounded around the bottom wall, the bottom wall is connected to one end of the side wall, the other end of the side wall is surrounded to form an opening, the expansion beam is arranged on the bottom wall, and two ends of the bearing piece along the first direction are respectively connected to the side wall.

14. The battery box of claim 13, further comprising a connector, wherein two ends of the carrier along the first direction are connected to the side walls by the connector, respectively.

15. The battery box of claim 13, further comprising a securing member disposed on a side of the bottom wall facing away from the expansion beam.

16. A battery, comprising:

the battery case according to any one of claims 1 to 15;

and the battery monomer is accommodated in the body.

17. A powered device comprising the battery of claim 16, the battery to provide electrical energy to the powered device.