CN221201382U - Battery box, battery and electric equipment - Google Patents

Abstract

The application relates to a battery box body, a battery and electric equipment. The battery box body comprises a box body and at least one boundary beam structure, wherein the box body is provided with a containing cavity, the boundary beam structure is connected to one side of the box body, which is opposite to the containing cavity, each boundary beam structure comprises a first boundary beam, a second boundary beam and a reinforcing beam, mutually independent parts are arranged between the first boundary beam, the second boundary beam and the reinforcing beam, the first boundary beam and the second boundary beam are oppositely arranged to define a containing space with the second boundary beam, and the reinforcing beam is arranged in the containing space and is connected with the inner walls of the first boundary beam and the second boundary beam. The boundary beam structure adopts the combination of the first boundary beam, the second boundary beam and the stiffening beam, so that the structure of each beam can be simplified, the modeling of each beam is simple, the manufacturing time is shortened, the die cost is reduced, and the stiffening beam is arranged in the accommodating space formed between the first boundary beam and the second boundary beam, and the structure after the structure is simplified can be structurally reinforced, so that the whole strength of the boundary beam structure is high.

Description

Battery box, battery and electric equipment

Technical Field

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

Background

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

The battery generally comprises a battery box body and a plurality of battery cells arranged in the battery box body, and the side beam structure of the battery box body is reinforced in order to improve the anti-collision capability of the battery box body. However, the side beam in the related art has complicated modeling, long manufacturing time and high cost of a die used for modeling.

Disclosure of utility model

In view of the problems, the application provides a battery box, a battery and electric equipment, which can solve the problems of complex edge beam modeling, long manufacturing time and high cost of a die used for modeling.

In a first aspect, the present application provides a battery case comprising:

A box body having a receiving chamber; and at least one boundary beam structure, each boundary beam structure is connected to one side of the box main body back to the accommodating cavity, the boundary beam structure comprises a first boundary beam, a second boundary beam and a reinforcing beam, mutually independent parts are arranged among the first boundary beam, the second boundary beam and the reinforcing beam, the first boundary beam and the second boundary beam are oppositely arranged to define an accommodating space with the second boundary beam, and the reinforcing beam is arranged in the accommodating space and is connected with the inner walls of the first boundary beam and the second boundary beam.

Because boundary beam structure includes first boundary beam, second boundary beam and stiffening beam, also the boundary beam structure adopts the form of first boundary beam, second boundary beam and stiffening beam combination promptly, can simplify the structure of each roof beam, make each roof beam molding simple, reduced manufacturing time, reduced the mould cost, and owing to set up stiffening beam in the accommodation space that forms between first boundary beam and second boundary beam, can carry out structural reinforcement to the structure after simplifying the structure again for boundary beam structure bulk strength is high.

In some embodiments, the reinforcement beam includes a reinforcing profile that is coupled to the inner walls of the first side beam and the second side beam.

The reinforcing beam comprises a reinforcing section bar, the section bar has high strength, rigidity and durability, can bear various loading and external force actions, and has an inner cavity structure, so that the weight is light, and the overall weight of the battery box body is reduced.

In some embodiments, the reinforcing profile has an inner cavity that is divided to form a plurality of sub-cavities in a direction perpendicular to the length of the reinforcing profile.

By providing a plurality of subchambers, the volume of a single subchamber can be reduced, further increasing the strength of the reinforcement formation.

In some embodiments, the cross-sectional shape of the subchamber is rectangular or triangular.

The rectangular and triangular structures are simple, so that the modeling of the reinforcing section bar is also simple, the structure of the reinforcing section bar can be simplified, and the manufacturing time of the side beam structure and the use of a die are further reduced.

In some embodiments, the first side rail and the second side rail are both sheet materials.

The plate has simple structure, no inner cavity in the structure and simple manufacturing process.

In some embodiments, the first side rail and the second side rail have a linear or arcuate cross-sectional shape.

Further simplifying the structure and reducing the manufacturing time and the use of the mold.

In some embodiments, the first side beam and the second side beam are stamped or bent pieces.

Through setting up first boundary beam and second boundary beam and be stamping workpiece or bending piece, can simplify manufacturing process, and reduce the mould and use.

In some embodiments, the first side beam and the second side beam are formed with a first opening communicating with the accommodating space at a side facing away from the box body, and the reinforcing beam seals the first opening.

Through the mode that forms first open-ended in one side that first boundary beam and second boundary beam were carried away from the case main part, on the one hand can reduce first boundary beam and second boundary beam and need seal in the side, and make first boundary beam and second boundary beam crooked in the side, cause the more complicated condition of structure, on the other hand, owing to one side does not seal and forms first opening, can form bigger and regular accommodation space, the molding of stiffening beam can be simpler, and the volume of stiffening beam also can be bigger, the strengthening effect is also better.

In some embodiments, the first side beam, the second side beam, and the reinforcement beam are each connected to the tank body on a side facing the tank body.

Likewise, on the one hand, the first boundary beam and the second boundary beam can be reduced and need be sealed at the side, and the first boundary beam and the second boundary beam are bent at the side, so that the situation of more complex structure is caused, on the other hand, the reinforcing beam is also connected with the box main body due to the fact that one side is not sealed, the connection area between the boundary beam structure and the box main body is increased, and the connection strength is improved.

In some embodiments, the tank body is a stamping.

The box main body is a stamping part, so that the box main body is simple in structure and simpler in manufacturing process. In addition, since the side edge of the punched box body is provided with the side beam structure, the side edge strength of the box body can be enhanced.

In a second aspect, a battery is provided, including a battery case and a plurality of battery cells in any of the foregoing embodiments, where the plurality of battery cells are disposed in the accommodating cavity.

In a third aspect, there is also provided an electrical device comprising a battery according to any of the embodiments described above.

Because the boundary beam structure of battery box includes first boundary beam, second boundary beam and stiffening beam, also the boundary beam structure adopts the form of first boundary beam, second boundary beam and stiffening beam combination promptly, can simplify the structure of each roof beam, make each roof beam molding simple, reduced manufacturing time, reduced the mould cost, and owing to set up stiffening beam in the accommodation space that forms between first boundary beam and second boundary beam, can carry out structural reinforcement to the structure after simplifying the structure again for boundary beam structure bulk strength is high.

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

Drawings

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

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

Fig. 2 is an exploded view of a battery according to one or more embodiments.

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

Fig. 4 is a schematic structural view of a portion of a structure of a battery case according to one or more embodiments.

Fig. 5 is a front view of a part of the structure of the battery case shown in fig. 4.

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

Reference numerals in the specific embodiments are as follows:

The vehicle 1000, the battery 100, the battery case 10, the first portion 11, the second portion 12, the side sill structure 121, the first side sill 1211, the second side sill 1212, the reinforcement beam 1213, the sub-inner chamber 1213a, the first opening 1214, the second opening 1215, the case main body 122, the accommodation chamber 1221, the battery cell 20, the end cap 21, the electrode terminal 211, the case 22, the battery cell assembly 23, the controller 200, the motor 300, the accommodation space AA.

Detailed Description

Embodiments of the technical scheme 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 aspects of the present application, and thus are merely examples, and are not intended to limit the scope 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 of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like 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 application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, 1 and/or 2 may indicate: there are three cases where 1 alone exists, 1 and 2 exist at the same time, and 2 exist alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" 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 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 description and simplification of the description, and do not indicate or imply 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 should 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 specific circumstances.

The power battery has high energy storage density, strong adaptability to high and low temperatures, and environmental protection, and has been widely applied to the fields of new energy pure electric vehicles and hybrid new energy vehicles. Currently, the energy density of the battery is higher and higher, which puts higher demands on the weight reduction of all parts of the battery, and the box body is an important component of the battery, so that the weight reduction design is particularly important. At present, the battery box structural style mainly has panel beating punching press welding, cast aluminium structure and section bar welding etc. under the prerequisite of guaranteeing enough security, can effectively reduce the weight of box.

In general, the side of the battery case has a high strength requirement, not only because the side of the battery needs to be mounted, but also needs a certain impact. In the related art, an anti-collision side beam is added on the side edge of the battery box body so as to improve the side edge strength of the box body. However, compared with the common beam structure, the anti-collision side beam needs to be provided with a more complex shape in order to improve the strength, so that the manufacturing process of the anti-collision side beam is complex, the manufacturing time is prolonged, and the manufacturing cost of the die is also improved.

In order to solve the problems of long manufacturing time and high die cost caused by complex modeling of an anti-collision boundary beam, the embodiment of the application provides a battery box body. The first side beam, the second side beam and the reinforcing beam are mutually independent components. The first side beam and the second side beam are oppositely arranged to define a containing space with the second side beam, and the reinforcing beam is arranged in the containing space and connected with the inner walls of the first side beam and the second side beam.

The boundary beam structure comprises the first boundary beam, the second boundary beam and the reinforcing beam, so that the structure of each beam can be simplified, the modeling of each beam is simple, the die cost is reduced, and the reinforcing beam is arranged in the accommodating space formed between the first boundary beam and the second boundary beam, and the structure after the structure is simplified can be structurally reinforced, so that the whole strength of the boundary beam structure is high.

The boundary beam structure is applied to a battery, and particularly applied to a battery box body, so that the risks of long manufacturing time and high die cost caused by complex boundary beam modeling are relieved.

The battery disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

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

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

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

Referring to fig. 2, fig. 2 is a schematic exploded view of a battery 100 according to one or more embodiments. The battery 100 includes a battery case 10 and a battery cell 20, and the battery cell 20 is accommodated in the battery case 10. The battery box 10 is configured to provide a receiving space for the battery unit 20, and the battery box 10 may have various structures. In some embodiments, the battery case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 being overlapped with each other, the first portion 11 and the second portion 12 together defining a receiving chamber for receiving the battery cell 20. The second part 12 may be a hollow structure with one end opened, the first part 11 may be a plate-shaped structure, and the first part 11 covers the opening side of the second part 12, so that the first part 11 and the second part 12 together define a containing cavity; the first portion 11 and the second portion 12 may be hollow structures each having an opening at one side, and the opening side of the first portion 11 is engaged with the opening side of the second portion 12. Of course, the battery case 10 formed by the first and second portions 11 and 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 battery box 10; of course, the battery 100 may also be a form that a plurality of battery cells 20 are connected in series or parallel or in series-parallel to form a battery module 30, and a plurality of battery modules 30 are connected in series or parallel or in series-parallel to form a whole and are accommodated in the battery case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 20.

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. 3, fig. 3 is an exploded 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. As shown in fig. 3, the battery cell 20 includes an end cap 21, a housing 22, a cell assembly 23, and other functional components.

The end cap 21 refers to a member that is covered at the opening of the case 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 21 may be adapted to the shape of the housing 22 to fit the housing 22. Optionally, the end cover 21 may be made of a material (such as an aluminum alloy) with a certain hardness and strength, so that the end cover 21 is not easy to deform when being extruded and collided, so that the battery cell 20 can have higher structural strength, and the safety performance can be improved. The end cap 21 may be provided with a functional part such as an electrode terminal 211. The electrode terminals 211 may be used to electrically connect with the cell assembly 23 for outputting or inputting electric power of the battery cell 20. In some embodiments, the end cap 21 may also be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. The material of the end cap 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. In some embodiments, insulation may also be provided on the inside of the end cap 21, which may be used to isolate electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

The housing 22 is an assembly for mating with the end cap 21 to form the internal environment of the battery cell 20, where the internal environment may be formed to house the cell assembly 23, electrolyte, and other components. The case 22 and the end cap 21 may be separate members, and an opening may be provided in the case 22, and the interior of the battery cell 20 may be formed by covering the opening with the end cap 21 at the opening. It is also possible to integrate the end cap 21 and the housing 22, but specifically, the end cap 21 and the housing 22 may form a common connection surface before other components are put into the housing, and when it is necessary to encapsulate the inside of the housing 22, the end cap 21 is then put into place with the housing 22. The housing 22 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 may be determined according to the specific shape and size of the cell 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 cell assembly 23 is a component in which electrochemical reactions occur in the battery cells 20. One or more battery cell assemblies 23 may be contained within the housing 22. The cell assembly 23 is mainly composed of positive and negative electrode materials, a diaphragm and a current collector 231. Specifically, the positive electrode material is coated on the battery output electrode connecting piece to form a positive electrode piece, the negative electrode material is coated on the battery output electrode connecting piece to form a negative electrode piece, the positive electrode piece and the negative electrode piece are wound or stacked, and the diaphragm is arranged between the positive electrode piece and the negative electrode piece to form the cell assembly 23. The parts of the positive electrode plate and the negative electrode plate with active substances form the main body part of the battery cell assembly, and the parts of the positive electrode plate and the negative electrode plate without active substances form the electrode lugs respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected with the electrode terminal to form a current loop.

Fig. 4 is a schematic structural view of a partial structure of a battery case according to one or more embodiments, fig. 5 is a front view of the partial structure of the battery case shown in fig. 5, and fig. 6 is a partially enlarged schematic view at a of the partial structure of the battery case shown in fig. 5. Referring to fig. 4-6, an embodiment of the present application provides a battery case 10, including a case main body 122 and at least one side beam structure 121. The tank main body 122 has a receiving cavity 1221, and each side beam structure 121 is connected to a side of the tank main body 122 facing away from the receiving cavity 1221, and the side beam structure 121 includes a first side beam 1211, a second side beam 1212, and a reinforcement beam 1213. The first side beam 1211, the second side beam 1212, and the reinforcement beam 1213 are independent members from each other. The first side beam 1211 is disposed opposite to the second side beam 1212 to define a receiving space AA with the second side beam 1212. The reinforcement beam 1213 is disposed in the accommodating space AA, and is connected to inner walls of the first side beam 1211 and the second side beam 1212.

The case main body 122 is a main body structure of the battery case 10, and may be formed by enclosing a plurality of side walls.

A beam refers to an elongated member that is capable of withstanding external forces, such as lateral and shear forces. In the embodiment of the application, the edge beam structure 121 is applied to the battery box 10 and is located outside the side wall of the box main body 122, so that the impact of external force on the battery box 10 can be borne, and further, the components such as the battery cells 20 in the battery box 10 are protected.

The direction in which the first and second side rails 1211 and 1212 are disposed opposite to each other may be the height direction of the battery case 10, specifically, the vertical direction as shown in fig. 5, and the first and second side rails 1211 and 1212 may also be referred to as upper and lower side rails.

The reinforcement beam 1213 can structurally reinforce the first side beam 1211 and the second side beam 1212.

The fact that the first side sill 1211, the second side sill 1212 and the reinforcement beam 1213 are independent members means that the first side sill 1211, the second side sill 1212 and the reinforcement beam 1213 may be separately manufactured and formed before being connected to each other. Since the reinforcement beam 1213 needs to fill the accommodating space AA formed by the first side beam 1211 and the second side beam 1212 and needs to be connected to the first side beam 1211 and the second side beam 1212, the structural form of the reinforcement beam 1213 may be different from that of the first side beam 1211 and the second side beam 1212, and the structural form of the first side beam 1211 and the second side beam 1212 may be the same. In some embodiments, the structural configuration of the first side beam 1211 and the second side beam 1212 will be simpler than the reinforcement beam 1213.

The connection method between the reinforcement beam 1213 and the first side beam 1211 and the second side beam 1212 is not limited to welding, bonding, or the like. The connection between the side sill structure 121 and the box main body 122 is not limited to welding or adhesion.

In the embodiment of the present application, the number of the side beam structures 121 is not limited to one, and may be two or four, etc., wherein the two side beam structures 121 are provided on opposite sides of the tank main body 122, respectively.

Therefore, since the side beam structure 121 includes the first side beam 1211, the second side beam 1212 and the reinforcement beam 1213, that is, the side beam structure 121 adopts the combination of the first side beam 1211, the second side beam 1212 and the reinforcement beam 1213, the structure of each beam can be simplified, the shape of each beam is simplified, the manufacturing time is reduced, the cost of the mold is reduced, and the reinforcement beam 1213 is disposed in the accommodating space AA formed between the first side beam 1211 and the second side beam 1212, and the structure after the structure is simplified can be structurally reinforced, so that the overall strength of the side beam structure 121 is high.

According to some embodiments of the application, the first side beam 1211 is a sheet material. The plate is of a plate-shaped structure with smaller thickness, the plate is simple in structure, no inner cavity exists in the structure, and the manufacturing process is simple. The second side rail 1212 may also be a plate material. Likewise, the second side rail 1212 is made simple in construction and the manufacturing process is also simple.

Specifically, the first side beam 1211 has a linear or arcuate cross-sectional shape. When the first side beam 1211 is a plate material and the cross-sectional shape is linear, the first side beam 1211 may be formed by punching, shearing, or the like, and when the first side beam 1211 is a plate material and the cross-sectional shape is linear, the first side beam may be formed by punching, bending, or the like. In summary, the structure is further simplified and the manufacturing time and the use of the mold are reduced, regardless of whether the cross-sectional shape of the first side beam 1211 is straight or arc-shaped.

The cross-sectional shape of the second side sill 1212 may be linear or arcuate. Also, the structure can be further simplified, and the manufacturing time and the use of the mold can be reduced.

Specifically, in the embodiment of the present application, the first side beam 1211 is positioned below the second side beam 1212 in the height direction of the battery case 10, the cross-sectional shape of the first side beam 1211 is arc-shaped, and the cross-sectional shape of the second side beam 1212 is linear. In this way, since the cross-sectional shape of the first side beam 1211 is curved and located below, the supporting ability of the first side beam 1211 can be improved, and the first side beam 1211 and the reinforcement beam 1213 can be supported well.

According to some embodiments of the present application, the first side rail 1211 and the second side rail 1212 are stamped or bent pieces.

The fact that the first side beam 1211 and the second side beam 1212 are stamping parts or bending parts means that the side beams are formed through a stamping or bending process. Specifically, stamping refers to a process of cutting or stamping a metal plate into a required shape by using a stamping machine under the action of a die, and bending refers to a process of forming a bent shape of the metal plate under the pressure of an upper film or a lower die of a bending machine.

By providing the first side rail 1211 and the second side rail 1212 as stamping or bending members, the manufacturing process can be simplified and the die use can be reduced.

According to some embodiments of the present application, the first side beam 1211 and the second side beam 1212 are formed with an opening 1214 communicating with the accommodating space AA at a side facing away from the tank main body 122, and the reinforcement beam 1213 blocks the first opening 1214.

By forming the first opening 1214 on the side of the first side beam 1211 and the second side beam 1212 facing away from the box main body 122, on one hand, the first side beam 1211 and the second side beam 1212 can be reduced to be closed on the side, so that the first side beam 1211 and the second side beam 1212 are bent on the side, and the structure is more complicated, on the other hand, since the first opening 1214 is formed by not closing one side, a larger and regular accommodating space AA can be formed, the shape of the reinforcement beam 1213 can be simpler, the volume of the reinforcement beam 1213 can be larger, and the reinforcement effect is better.

According to some embodiments of the present application, the first side beam 1211, the second side beam 1212, and the reinforcement beam 1213 are each connected to the tank main body 122 at a side toward the tank main body 122.

Specifically, the first side sill 1211 and the second side sill 1212 are also separated from each other on the side facing the tank main body 122 to form a second opening 1215, the second opening 1215 is capable of being closed by the tank main body 122, and the reinforcing beam 1213 is capable of being connected to the tank main body 122 from the second opening 1215 on the side facing the tank main body 122.

Similarly, on the one hand, the first side beam 1211 and the second side beam 1212 need to be closed at the side edges, and the first side beam 1211 and the second side beam 1212 bend at the side edges, which results in a more complex structure, on the other hand, the reinforcing beam 1213 is also connected with the box main body 122 because one side is not closed, so that the connection area between the side beam structure 121 and the box main body 122 is increased, and the connection strength is improved.

According to some embodiments of the present application, the reinforcement beam 1213 includes a reinforcement profile that is connected to the inner wall of the first side beam 1211 and the second side beam 1212.

By providing the reinforcement beam 1213 including the reinforcement profile, the profile has high strength, rigidity, and durability, can withstand various loads and external force actions, and is light in weight due to the inner cavity structure, thereby contributing to reduction of the overall weight of the battery case 10.

Specifically, the reinforcing profile has an inner cavity, which is divided to form a plurality of sub-cavities 1213a in a direction perpendicular to the length direction of the reinforcing profile. By providing a plurality of subchambers 1213a, the volume of a single subchamber 1213a can be reduced, further increasing the strength of the reinforcement formation 1213.

More specifically, at least one partition plate is provided in the inner cavity of the reinforcing profile, all of the partition plates being spaced apart from each other to partition the inner cavity into a plurality of sub-inner cavities 1213a.

In an embodiment of the present application, the cross-sectional shape of the sub-lumen 1213a is rectangular or triangular. The rectangular and triangular structures are simple, and therefore, the shape of the reinforcing profile is also simplified, so that the structure of the reinforcing profile can be simplified, and the manufacturing time and the mold use of the side beam structure 121 can be further reduced.

Optionally, when the cross-sectional shape of the first side beam 1211 is arc-shaped, the cross-sectional shape of the second side beam 1212 is linear, and the side of the first side beam 1211 and the side of the second side beam 1212 form an opening 1214 communicating with the accommodating space AA, the cross-sectional shape of the subchamber 1213a of the reinforcing section bar includes at least one rectangle and at least one triangle, for better understanding the solution of the embodiment of the present application, the subchamber 1213a with the triangle cross-sectional shape is referred to as a first subchamber, the subchamber 1213a with the rectangle cross-sectional shape is referred to as a second subchamber, the first subchamber is located at one side of the second subchamber, one side of the first subchamber is attached to one side of the second subchamber, and the opposite side of the second subchamber is attached to the inner wall of the second side beam 1212, and the bevel edge of the first subchamber is contacted with the inner wall of the first side beam 1211. In addition, one of the other two sides of the second subchamber may block the opening 1214, and the other side may be flush with the other side of the first subchamber and fit against the tank body 122.

Specifically, the sub-lumens 1213a of the reinforcing profile include one first sub-lumen and two second sub-lumens, all of which are stacked in the width direction of the reinforcing profile, the first sub-lumen being located at one side of all of the sub-lumens in the thickness direction of the reinforcing profile, one of the second sub-lumens having one side thereof blocking the first opening 1214, and the other second sub-lumen having one side facing away from one of the second sub-lumens, being flush with one side of the first sub-lumen blocking the second opening 1215 and being connected to the box main body 122.

By the arrangement, the accommodating space AA can be filled with the reinforcing section bars as much as possible, and the structural strength of the boundary beam structure 121 is further improved.

According to some embodiments of the application, the tank body 122 is a stamping. By setting the box main body 122 as a stamping, the structure of the box main body 122 is simple, and the manufacturing process is simpler. In addition, since the side beam structure 121 is provided on the side of the punched box main body 122, the side strength of the box main body 122 can be enhanced.

According to some embodiments of the present application, the battery case 10 includes a press-formed case main body 122 and a side rail structure 121. The case main body 122 has a receiving chamber 1221, and the side beam structure 121 is located at a side of the case main body 122 facing away from the receiving chamber 1221 in the width direction of the battery case 10, and the side beam structure 121 includes a first side beam 1211, a second side beam 1212, and a reinforcement beam 1213. The first side beam 1211 and the second side beam 1212 are both plates, and the reinforcement beam 1213 is a reinforcement profile. The first side beam 1211 and the second side beam 1212 are disposed opposite to each other in the height direction of the battery case 10 to form a receiving space AA between them for receiving the reinforcement beam 1213, and the reinforcement beam 1213 is connected to the inner walls of the first side beam 1211 and the second side beam 1212. The first side beam 1211 and the second side beam 1212 form a second opening 1215 on a side facing the tank main body 122, form a first opening 1214 on a side facing away from the tank main body 122, and the reinforcement beam 1213 closes the second opening 1215 and the first opening 1214 and is connected to the tank main body 122 at the second opening 1215.

The embodiment of the application further provides a battery 100, which includes the battery case 10 and the plurality of battery cells 20 in any of the above embodiments, and the plurality of battery cells 20 are disposed in the accommodating cavity.

Since the side beam structure 121 of the battery case 10 includes the first side beam 1211, the second side beam 1212 and the reinforcement beam 1213, that is, the side beam structure 121 is in a form of combining the first side beam 1211, the second side beam 1212 and the reinforcement beam 1213, the structure of each beam can be simplified, the shape of each beam is simplified, the manufacturing time is reduced, the cost of the mold is reduced, and the reinforcement beam 1213 is disposed in the accommodating space AA formed between the first side beam 1211 and the second side beam 1212, and the structure after the structure is simplified can be structurally reinforced, so that the overall strength of the side beam structure 121 is high.

In addition, the embodiment of the application also provides an electric device, which comprises the battery 100 in any embodiment.

Since the side beam structure 121 of the battery case 10 includes the side beam 1211, the second side beam 1212 and the reinforcement beam 1213, that is, the side beam structure 121 is in a form of combining the first side beam 1211, the second side beam 1212 and the reinforcement beam 1213, the structure of each beam can be simplified, the shape of each beam is simplified, the manufacturing time is reduced, the cost of the mold is reduced, and the reinforcement beam 1213 is disposed in the accommodating space AA formed between the first side beam 1211 and the second side beam 1212, and the structure after the structure is simplified can be structurally reinforced, so that the overall strength of the side beam structure 121 is high.

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 application has been described in detail with reference to the foregoing embodiments, it will 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 application, and are intended to be included within the scope of the appended 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 (12)

1. A battery box, comprising:

A box body having a receiving chamber; and

At least one boundary beam structure, every boundary beam structure connect in the case main part dorsad hold one side of chamber, boundary beam structure includes first boundary beam, second boundary beam and stiffening beam, first boundary beam the second boundary beam with be independent part each other between the stiffening beam, first boundary beam with the second boundary beam sets up relatively, in order to with define the accommodation space between the second boundary beam, the stiffening beam is located in the accommodation space, and with first boundary beam with the inner wall of second boundary beam links to each other.

2. The battery box of claim 1, wherein the stiffening beam comprises a stiffening profile that is connected to the inner walls of the first side beam and the second side beam.

3. The battery case according to claim 2, wherein the reinforcing profile has an inner cavity divided to form a plurality of sub-inner cavities in a direction perpendicular to a length direction of the reinforcing profile.

4. A battery compartment as claimed in claim 3, wherein the cross-sectional shape of the subchamber is rectangular or triangular.

5. The battery box of any one of claims 1-4, wherein the first side rail and the second side rail are both sheet materials.

6. The battery box of claim 5, wherein the first side rail and the second side rail have a linear or arcuate cross-sectional shape.

7. The battery box of claim 5, wherein the first side rail and the second side rail are stamped or bent pieces.

8. The battery box of claim 5, wherein the first side beam and the second side beam are formed with a first opening communicating with the accommodating space on a side facing away from the box body, and the reinforcing beam blocks the first opening.

9. The battery case according to claim 5, wherein the first side rail, the second side rail, and the reinforcing beam are each connected to the case body on a side toward the case body.

10. The battery box of any one of claims 1-4, wherein the box body is a stamping.

11. A battery, characterized by comprising the battery box body and a plurality of battery cells according to any one of claims 1-10, wherein the battery cells are arranged in the accommodating cavity.

12. A powered device comprising the battery of claim 11.