CN219779096U - Battery box, battery and power consumption device - Google Patents

Abstract

The application relates to a box body of a battery, the battery and an electric device, wherein the box body comprises a base plate, a beam body, a guard plate and a sleeve assembly; the beam body is arranged on one side of the base plate facing the battery unit of the battery; the guard board is arranged on one side of the base plate, which is away from the beam body; the sleeve assembly passes through and connects the shield, the base plate and the beam. The box body of the battery comprises the base plate, the beam body, the guard plate and the sleeve assembly, wherein the sleeve assembly penetrates through the guard plate, the base plate and the beam body and connects the guard plate, the base plate and the beam body, and the stable connection of the guard plate, the base plate and the beam body can be realized by arranging the sleeve assembly, so that the assembly of the guard plate, the base plate and the beam body is greatly simplified, the air tightness of the box body can be improved, the overall weight of the box body of the battery is reduced, and the box body of the battery is lighter.

Description

Battery box, battery and power consumption device

Technical Field

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

Background

Battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like. The battery cells may include cadmium-nickel battery cells, hydrogen-nickel battery cells, lithium ion battery cells, secondary alkaline zinc-manganese battery cells, and the like.

In the development of battery technology, the assembly process of the box body is complex, so how to improve the assembly efficiency of the box body is a technical problem to be solved urgently in the battery technology.

Disclosure of Invention

The utility model provides a battery box, a battery and an electric device, aiming at the technical problem that the assembly efficiency of the battery box can be improved to a certain extent.

In a first aspect, the utility model provides a battery case, comprising a base plate, a beam body, a guard plate and a sleeve assembly; the beam body is arranged on one side of the base plate facing the battery unit of the battery; the guard board is arranged on one side of the base plate, which is away from the beam body; the sleeve assembly passes through and connects the shield, the base plate and the beam.

The box body of the battery comprises the base plate, the beam body, the guard plate and the sleeve assembly, wherein the sleeve assembly penetrates through the guard plate, the base plate and the beam body and connects the guard plate, the base plate and the beam body, and the stable connection of the guard plate, the base plate and the beam body can be realized by arranging the sleeve assembly, so that the assembly of the guard plate, the base plate and the beam body is greatly simplified, the assembly efficiency of the box body is improved, the air tightness of the box body is also improved, the overall weight of the box body of the battery is reduced, and the box body of the battery is lighter. Moreover, the box body of the battery is applied to the electric device, the sleeve component not only has the function of connecting the guard plate, the base plate and the beam body, but also has the mounting function, and the battery can be mounted on the electric device through the sleeve component, so that the electric device has higher integration level.

According to one embodiment of the application, the sleeve assembly comprises a sleeve comprising a sleeve body and a flange surrounding the sleeve body, the sleeve body passing through the shield, the base plate and the beam body, the flange being snap-fitted to the shield.

In these alternative embodiments, the sleeve assembly includes the sleeve, and the sleeve includes the sleeve main part and encircles the flange of sleeve main part, and the sleeve main part passes backplate, base plate and roof beam body and can realize backplate, base plate and roof beam body's connection, flange and backplate joint not only play spacing effect, can also improve the stability and the leakproofness that the sleeve assembly was connected with the backplate.

According to one embodiment of the application, the end face of the flange facing the shield is clamped with the end face of the shield facing the flange.

In these alternative embodiments, the end surface of the flange is engaged with and connected with the end surface of the guard board in a clamping manner, so that a larger contact area is formed between the flange and the guard board, and the stability and the tightness of the connection between the sleeve assembly and the guard board can be further improved.

According to one embodiment of the application, the sleeve assembly further comprises a locking member sleeved on the sleeve body and located on a side of the beam body away from the base plate, the locking member being configured to cooperate with the sleeve to lock the shield, the base plate and the beam body.

In these alternative embodiments, the sleeve assembly includes a sleeve and a retaining member, and by the engagement of the sleeve and the retaining member, the shield, the base plate, and the beam are more stably clamped, thereby not only limiting movement or play of the shield, the base plate, and the beam at the same time, but also improving the tightness between the sleeve assembly, the shield, the base plate, and the beam.

According to one embodiment of the application, the locking member is threadedly coupled to the sleeve body.

In these alternative embodiments, the locking member is simply connected with the sleeve, which is beneficial to manufacture and reduces the manufacturing cost to a certain extent

According to one embodiment of the present application, the sleeve body includes a guide portion and a connection portion disposed along an axial direction of the sleeve body, the guide portion passing through the shield plate, the base plate, and the beam body and being used for connection with the cover body, and the connection portion being connected with the shield plate, the base plate, and the beam body.

In these alternative embodiments, the sleeve body includes a guide portion penetrating through the guard plate, the base plate and the beam body and connected with the cover body, and a connection portion connected with the guard plate, the base plate and the beam body, so that the cover body and the box body are connected through the sleeve assembly, thereby saving design space and cost and improving assembly efficiency and sealing performance.

According to one embodiment of the application, the radial dimension of the connecting portion is greater than the radial dimension of the guiding portion.

In these alternative embodiments, the arrangement is such that, on the one hand, the connection portion is connected to the guard plate, the base plate and the beam body, so that the contact area between the guard plate, the base plate and the beam body can be increased, and the connection stability between each other can be increased; on the other hand, the radial dimension of the guide part is smaller, the guide part plays a role in guiding, is beneficial to penetrating through the guard plate, the base plate and the beam body, and can save the occupied space of the guide part and save materials.

According to one embodiment of the application, the radial dimension of the guide portion decreases gradually in the axial direction away from the connecting portion.

In these alternative embodiments, the radial dimensions of the guide portion, i.e. the cross-sectional dimensions of the guide portion, are gradually reduced, which allows for a weight reduction of the sleeve body while also having a high structural strength. According to one embodiment of the application, the sleeve body further comprises a sealing part, which is located at an end of the guiding part remote from the connecting part and is arranged around the guiding part, and an end surface of the sealing part facing away from the connecting part is provided with an inwardly recessed recess.

According to one embodiment of the application, the sleeve body further comprises a sealing part, which is located at an end of the guiding part remote from the connecting part and is arranged around the guiding part, and an end surface of the sealing part facing away from the connecting part is provided with an inwardly recessed recess.

In these alternative embodiments, the overall tightness of the tank can be further improved by providing a sealing portion.

According to one embodiment of the application, the sleeve assembly further comprises a first sealing ring sleeved on the sleeve body and located between the guard plate and the flange, and the first sealing ring is used for sealing the guard plate and the flange.

In these alternative embodiments, a first seal ring is disposed between the shield and the flange to improve the sealing between the shield and the sleeve.

According to one embodiment of the application, the battery box further comprises a sealing gasket arranged between the base plate and the guard plate, and the sealing gasket is sleeved on the sleeve assembly.

In these alternative embodiments, a gasket is disposed between the substrate and the shield to improve the sealing performance between the substrate and the shield and to reduce the mechanical fatigue strength of the substrate and the shield in direct contact. In addition, the sealing gasket has a certain buffer effect, when the guard plate is impacted externally, the transmission of external acting force to the base plate can be reduced, and the deformation of the base plate is reduced to damage the battery unit.

According to one embodiment of the application, the battery case further includes a cover coupled to the sleeve assembly.

In these alternative embodiments, the sleeve component is connected with the cover body, and the sleeve component and the cover body have higher connection stability, so that the assembly of the cover body is simplified, and the overall weight of the box body is reduced.

According to one embodiment of the application, the case of the battery further includes a second sealing member disposed between the sleeve assembly and the cover, the second sealing member being for sealing the sleeve assembly and the cover.

In these alternative embodiments, a second seal is provided between the sleeve assembly and the cover to improve the sealing performance of the sleeve assembly and the cover.

In a second aspect, the application provides a battery comprising a case according to the aforementioned battery.

The battery provided by the application comprises the box body, the connection of the components in the box body is realized through the sleeve assembly, and the assembly of the box body is simplified, so that the overall weight of the battery is reduced, and the stability, reliability and safety of the battery are further improved.

In a third aspect, the present application provides an electrical device comprising a load-bearing structure, a battery according to the foregoing and a fixture; the battery is used for providing electric energy; the fixing piece is used for connecting the bearing structure and the sleeve assembly.

The electric device provided by the application comprises the bearing structure, the battery and the fixing piece, wherein the battery is arranged on the bearing structure through the matching of the fixing piece and the sleeve assembly, and other parts are saved, so that the electric device has higher integration level.

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

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

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

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

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

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

fig. 5 is a front view of a case of a battery according to some embodiments of the present application;

fig. 6 is a schematic structural view of a case of a battery according to some embodiments of the present application;

fig. 7 is a schematic structural view of a sleeve assembly of a case of a battery according to some embodiments of the present application;

fig. 8 is a schematic view illustrating a structure of a case of a battery according to other embodiments of the present application;

fig. 9 is a top view of a case of a battery according to some embodiments of the present application.

The figures are not necessarily to scale.

Reference numerals illustrate:

1000. a vehicle;

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

10. a battery cell; 20. a cover body; 30. a case body; 40. a second seal;

101. a housing; 102. an end cap; 103. an electrode assembly; 104. an electrode terminal; 105. a pressure release mechanism;

3. a case;

31. a substrate;

32. a beam body;

33. a guard board;

34. a sleeve assembly; 341. a sleeve; 3411. a sleeve body; 3411a, a guide; 3411b, a connection part; 3411c, sealing part; 3411d, recesses; 3412. a flange; 342. a locking member; 343. a first seal ring;

35. and a sealing gasket.

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 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.

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.

In the embodiments of the present application, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are merely illustrative and should not be construed as limiting the application in any way.

The term "plurality" as used herein refers to two or more (including two).

In the present application, the battery cells may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, which is not limited in the embodiment of the present application. The battery cell may be in a cylindrical shape, a flat shape, a rectangular parallelepiped shape, or other shapes, which is not limited in this embodiment of the application. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft package battery cell are not limited in this embodiment.

Reference to a battery in accordance with an embodiment of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cell to some extent.

The battery includes box and battery monomer, and the box can include lid and case body, and lid and case body prescribe a limit jointly to be used for holding battery monomer accommodation space.

In some embodiments, the box body generally includes components such as a substrate, a beam body and a guard plate, and the sealing between the components is complex, and the components are conventionally sealed by adopting manners such as welding, screwing, sealant, sealing ring and the like, so that the assembly efficiency is low under the condition that the box body is sealed by using complex process combination, and the possibility of poor sealing or sealing failure exists due to excessive use of sealing elements. The statements made above merely serve to provide background information related to the present disclosure and may not necessarily constitute prior art.

In view of the above problems, the inventors have made intensive studies to provide a case for a battery, in which a sleeve assembly penetrates a guard plate, a base plate and a beam body and connects the guard plate, the base plate and the beam body, and by providing a sleeve assembly, stable connection of the guard plate, the base plate and the beam body can be achieved, assembly of the guard plate, the base plate and the beam body is greatly simplified, assembly efficiency of the case is improved, air tightness of the case can be improved, overall weight of the case for the battery is reduced, and the case for the battery is made lighter.

The battery may be applied to vehicles, cellular phones, portable devices, notebook computers, ships, spacecraft, electric toys, electric tools, and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric device in particular.

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 an exploded view of a battery 100 according to some embodiments of the present application. The battery 100 includes a case and a battery cell 10. In some embodiments, the case may include a cover 20 and a case body 30, the cover 20 and the case body 30 being covered with each other, the cover 20 and the case body 30 together defining a receiving space for receiving the battery cell 10. The case body 30 may have a hollow structure with one end opened, the cover 20 may have a plate-shaped structure, and the cover 20 covers the opening side of the case body 30, so that the cover 20 and the case body 30 together define an accommodating space; the lid 20 and the case body 30 may be hollow structures each having one side open, and the opening side of the lid 20 may be closed to the opening side of the case body 30. Of course, the case formed by the cover 20 and the case body 30 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

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

Each battery cell 10 may be a lithium ion battery cell, a lithium sulfur battery cell, a sodium ion battery cell, or a magnesium ion battery cell, but is not limited thereto. The battery cell 10 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 10 according to some embodiments of the present application. The battery cell 10 refers to the smallest unit constituting the battery. As shown in fig. 3, the battery cell 10 includes a case 101, an end cap 102, an electrode assembly 103, an electrode terminal 104, and other functional components.

The end cap 102 refers to a member that is covered at the opening of the case 101 to isolate the internal environment of the battery cell 10 from the external environment. Without limitation, the shape of the end cap 102 may be adapted to the shape of the housing 101 to fit the housing 101. Alternatively, the end cover 102 may be made of a material having a certain hardness and strength (such as an aluminum alloy), so that the end cover 102 is not easy to deform when being extruded and collided, so that the battery cell 10 can have a higher structural strength, and the safety performance can be improved. The end cap 102 may be provided with functional components such as electrode terminals 104. The electrode terminals 104 may be used to electrically connect with the electrode assembly 103 for outputting or inputting electric power of the battery cell 10. In some embodiments, the end cap 102 may also be provided with a pressure relief mechanism 105 for relieving the internal pressure when the internal pressure or temperature of the battery cell 10 reaches a threshold. The material of the end cap 102 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, an insulating member may also be provided on the inside of the end cap 102, which may be used to isolate electrical connection components within the housing 101 from the end cap 102 to reduce the risk of short circuits. By way of example, the insulating member may be plastic, rubber, or the like.

The case 101 is an assembly for mating with the end cap 102 to form an internal environment of the battery cell 10, wherein the formed internal environment may be used to house the electrode assembly 103, electrolyte, and other components. The case 101 and the end cap 102 may be separate components, and an opening may be provided in the case 101, and the interior of the battery cell 10 may be formed by covering the opening with the end cap 102 at the opening. The end cap 102 and the housing 101 may be integrated, and specifically, the end cap 102 and the housing 101 may form a common connection surface before other components are put into the housing, and when the interior of the housing 101 needs to be sealed, the end cap 102 is covered with the housing 101. The housing 101 may be of various shapes and various sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 101 may be determined according to the specific shape and size of the electrode assembly 103. The material of the housing 101 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application.

The electrode assembly 103 is a component in which electrochemical reactions occur in the battery cell 10. One or more electrode assemblies 103 may be contained within the housing 101. The electrode assembly 103 is mainly formed by winding a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode sheets having active material constitute the main body of the electrode assembly 103, and the portions of the positive and negative electrode sheets having no active material constitute the tabs, respectively. The positive electrode tab and the negative electrode tab can be located at one end of the main body together or located at two ends of the main body 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 to the electrode terminal 104 to form a current loop.

The positive pole piece and the negative pole piece are wound around a winding axis to form a winding structure. In the winding structure, the positive electrode sheet and the negative electrode sheet are overlapped in a direction perpendicular to the winding axis. In other words, the positive electrode sheet and the negative electrode sheet are wound in a plurality of turns along the winding direction, which is the direction in which the positive electrode sheet and the negative electrode sheet are wound circumferentially from inside to outside. After the winding structure is unwound, the positive electrode sheet and the negative electrode sheet are substantially in the shape of elongated strips.

Fig. 4 is a schematic structural view of a case of a battery according to some embodiments of the present application.

As shown in fig. 4, the battery provided by the application, the case 3 comprises a base plate 31, a beam 32, a guard plate 33 and a sleeve assembly 34. The beam 32 is disposed on a side of the substrate 31 facing the battery cells of the battery. The guard 33 is disposed on a side of the substrate 31 facing away from the beam 32. The sleeve assembly 34 passes through the shield 33, the base plate 31 and the beam 32 and connects the shield 33, the base plate 31 and the beam 32.

The base plate 31 is a plate-like structure for providing a supporting force to the battery cells disposed in the case 3, and specifically, the base plate 31 is located at the bottom of the battery cells after the battery cells are assembled in the case 3. The material of the substrate 31 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, the substrate 31 may also be provided with insulation, which may be used to isolate electrical connection components within the box 3 from the substrate 31 to reduce the risk of short circuits. Exemplary insulators may be plastics, rubber, insulating coatings, or the like

The setting of the roof beam body 32 can improve the structural strength of box 3, and the roof beam body 32 and base plate 31 can be with the box 3 defining a plurality of holding chamber that are used for holding the battery to plan the free mode of arranging of battery.

In the embodiment of the present application, the beam 32 may be a cross beam or a longitudinal beam.

In the embodiment of the present application, the case 3 of the battery includes one beam 32 or a plurality of beams 32, the plurality of beams 32 are axially spaced along the sleeve assembly 34, and the sleeve assembly 34 is penetrated by the plurality of beams 32.

The guard plate 33 is used for protecting the base plate 31, so as to prevent the base plate 31 from being impacted to influence the firmness and safety of the box body 3, thereby influencing the safety of the battery. The guard plate 33 may have various shapes, regular, such as rectangular parallelepiped, square, cylindrical, etc., or may have other irregular shapes, and the specific shape of the guard plate 33 is not limited by the present application. The guard 33 may be made of various materials, such as steel, aluminum alloy, or other composite materials, and optionally, one of the materials is carbon fiber composite materials, which has advantages of light weight, high strength, high impact resistance, and the like.

The sleeve assembly 34 passes through the shield 33, the base plate 31 and the beam 32 and connects the shield 33, the base plate 31 and the beam 32. Specifically, the shield 33 has a first through hole, the base plate 31 has a second through hole, the beam body 32 has a third through hole, and the sleeve assembly 34 passes through the first through hole, the second through hole, and the third through hole, and the sleeve assembly 34 is connected with the shield 33, the base plate 31, and the beam body 32, respectively, to connect the shield 33, the base plate 31, and the beam body 32.

In the embodiment of the present application, the sleeve assembly 34 not only enables the connection of the guard plate 33, the base plate 31 and the beam body 32, but also allows the battery to be mounted on the power device through the sleeve assembly 34 when the sleeve assembly 34 is applied to the power device.

Illustratively, the sleeve assembly 34 may include a sleeve that passes through the shield 33, the base plate 31, and the beam 32 and connects the sleeve with the shield 33, the base plate 31, and the beam 32 by welding to connect the shield 33, the base plate 31, and the beam 32.

Illustratively, the sleeve assembly 34 may include a sleeve and a connector, the sleeve passing through the shield 33, the base plate 31, and the beam 32 and connecting the sleeve with the shield 33, the base plate 31, and the beam 32 via the connector to connect the shield 33, the base plate 31, and the beam 32.

In embodiments of the present application, the sleeve assembly 34 may be coupled to the guard 33, the base 31, and the beam 32 in various ways, such as welding, bonding, screwing, riveting, etc.

The box body 3 of the battery, provided by the application, comprises the base plate 31, the beam body 32, the guard plate 33 and the sleeve component 34, wherein the sleeve component 34 penetrates through the guard plate 33, the base plate 31 and the beam body 32 and connects the guard plate 33, the base plate 31 and the beam body 32, and by arranging one sleeve component 34, the stable connection of the guard plate 33, the base plate 31 and the beam body 32 can be realized, so that the assembly of the guard plate 33, the base plate 31 and the beam body 32 is greatly simplified, the assembly efficiency of the box body 3 is improved, the air tightness of the box body 3 is also improved, the overall weight of the box body 3 of the battery is reduced, and the box body 3 of the battery is lighter. Moreover, the case 3 of the battery is applied to the electric device, and the sleeve member 34 has not only the function of connecting the guard plate 33, the base plate 31 and the beam body 32, but also the mounting function, and the battery can be mounted to the electric device through the sleeve member 34, so that the electric device has a higher integration level.

In some embodiments, the case includes a plurality of side beams that are connected in sequence and form a frame structure that encloses a receiving cavity with the base plate. The beam body 32 is disposed in the receiving cavity and is connected to the side beam.

Optionally, a plurality of side rails, a guard plate 33, a base plate 31, a beam body 32, and a sleeve member 34 form a box body having an opening at one end with a receiving cavity.

Referring to fig. 5 and 6 in combination, fig. 5 is a front view of a case of a battery according to some embodiments of the present application; fig. 6 is a schematic structural view of a case of a battery according to some embodiments of the present application.

According to one embodiment of the present application, as shown in fig. 4 to 6, the sleeve assembly 34 includes a sleeve 341, the sleeve 341 includes a sleeve body 3411 and a flange 3412 surrounding the sleeve body 3411, the sleeve body 3411 passes through the guard plate 33, the base plate 31 and the beam 32, and the flange 3412 is engaged with the guard plate 33.

In the embodiment of the present application, the sleeve assembly 34 includes a sleeve 341, where the sleeve 341 includes a sleeve main body 3411 and a flange 3412 disposed at one end of the sleeve 341, and the flange 3412 is engaged with the guard 33, that is, a side of the flange 3412 facing the guard 33 is attached to a side of the guard 33 facing the flange 3412.

In an embodiment of the present application, the sleeve body 3411 and the flange 3412 may be integrally provided, and it is understood that the free end of the sleeve body 3411 sequentially passes through the guard 33, the base 31 and the beam 32, so that the flange 3412 is clamped to the guard 33.

In the embodiment of the present application, the sleeve body 3411 and the flange 3412 may be separately disposed, and it is understood that the sleeve body 3411 passes through the guard 33, the base plate 31 and the beam 32, and then the flange 3412 is connected to the sleeve body 3411 and is clamped to the guard 33.

In these alternative embodiments, sleeve assembly 34 includes sleeve 341, sleeve 341 includes sleeve body 3411 and flange 3412 surrounding sleeve body 3411, sleeve body 3411 passes through guard 33, base 31 and beam 32 to connect guard 33, base 31 and beam 32, flange 3412 is clamped to guard 33, which not only serves as a stop, but also improves the stability and sealing of the connection of sleeve assembly 34 to guard 33.

According to one embodiment of the application, the end face of flange 3412 facing shield 33 is snapped into engagement with the end face of shield 33 facing flange 3412.

In these alternative embodiments, the end surface of flange 3412 engages and is in snap-fit engagement with the end surface of shield 33, such that a larger contact area between flange 3412 and shield 33 can further improve the stability and tightness of the connection of sleeve assembly 34 to shield 33.

According to one embodiment of the present application, as shown in fig. 5 and 6, the sleeve assembly 34 further includes a locking member 342, wherein the locking member 342 is sleeved on the sleeve body 3411 and is located on a side of the beam 32 facing away from the base plate 31, and the locking member 342 is configured to cooperate with the sleeve 341 to lock the guard 33, the base plate 31 and the beam 32.

In the embodiment of the present application, the sleeve assembly 34 includes a sleeve 341 and a locking member 342, the locking member 342 has a through hole, the sleeve 341 passes through the through hole to be in locking engagement with the locking member 342, specifically, the sleeve 341 includes a sleeve main body 3411 and a flange 3412 surrounding the sleeve main body 3411, a free end of the sleeve main body 3411 passes through the guard plate 33, the base plate 31 and the beam body 32 in sequence, and passes out of the beam body 32, the flange 3412 is clamped with the guard plate 33, the locking member 342 is sleeved on the sleeve main body 3411 and is fixed with the sleeve main body 3411, and the locking member 342 abuts against the beam body 32 and is engaged with the flange 3412 to lock the guard plate 33, the base plate 31 and the beam body 32.

Specifically, the locking member 342 is a locking member, a locking tab, or a locking bar that is sleeved on the sleeve body 3411 and fixedly connected to the sleeve body 3411.

Optionally, a rubber pad is provided between the retaining member 342 and the beam 32. So configured, the lowering latches 342 over-compress the beam 32, causing the beam 32 to deform or fail.

In these alternative embodiments, the sleeve assembly 34 includes the sleeve and retaining member 342, and the sleeve and retaining member 342 cooperate to more firmly retain the shield 33, the base plate 31, and the beam 32, thereby not only limiting movement or play of the shield 33, the base plate 31, and the beam 32, but also improving the seal between the sleeve assembly 34, the shield 33, the base plate 31, and the beam 32.

According to one embodiment of the present application, the retaining member 342 is threadably coupled to the sleeve body 3411.

Optionally, the locking member 342 is a nut, and an outer wall surface of the sleeve body 3411 is provided with external threads in threaded connection with the nut.

In these alternative embodiments, the locking member 342 is simply connected to the sleeve 341, which facilitates manufacture and reduces manufacturing costs to some extent

According to an embodiment of the present application, as shown in fig. 5 and 6, the sleeve body 3411 includes a guide portion 3411a and a connection portion 3411b, the guide portion 3411a and the connection portion 3411b are disposed along an axial direction of the sleeve body 3411, the guide portion 3411a passes through the shield 33, the base plate 31 and the beam 32 and is used to be connected with the cover, and the connection portion 3411b is connected with the shield 33, the base plate 31 and the beam 32.

In an embodiment of the present application, the sleeve body 3411 includes a guide portion 3411a and a connection portion 3411b, the guide portion 3411a is axially disposed and connected with the connection portion 3411b, the guide portion 3411a passes through the guard plate 33, the base plate 31 and the beam 32 and protrudes out of the beam 32, one end of the guide portion 3411a is connected with the cover, the other end of the guide portion 3411a is connected with the connection portion 3411b, the connection portion 3411b passes through the guard plate 33, the base plate 31 and the beam 32 and connects the guard plate 33, the base plate 31 and the beam 32, one end of the connection portion 3411b is connected with the guide portion 3411a, and the other end of the connection portion 3411b is connected with the flange 3412.

In an embodiment of the present application, the structure of the guide portion 3411a and the structure of the connection portion 3411b may be the same or different, wherein in the case where the structure of the guide portion 3411a and the connection portion 3411b are different, the radial dimensions of the guide portion 3411a and the connection portion 3411b are different, or the wall thicknesses of the guide portion 3411a and the connection portion 3411b are different, or the like.

In the embodiment of the present application, the structural strength of the guide portion 3411a is greater than or equal to the structural strength of the connecting portion 3411 b. By this arrangement, the connection stability between the sleeve 341 and the guard plate 33, between the base plate 31 and the beam 32 can be improved, and the cost can be reduced.

Alternatively, the guide portion 3411a and the connecting portion 3411b are integrally formed.

In these alternative embodiments, the sleeve body 3411 includes the guide portion 3411a and the connection portion 3411b, the guide portion 3411a passes through the guard plate 33, the base plate 31 and the beam body 32 and is connected with the cover body, and the connection portion 3411b is connected with the guard plate 33, the base plate 31 and the beam body 32, so that the connection of the cover body and the case body 3 is achieved through the sleeve assembly 34, which saves design space and cost, and has high assembly efficiency and sealing performance.

According to one embodiment of the present application, the radial dimension of the connecting portion 3411b is greater than the radial dimension of the guide portion 3411 a.

Alternatively, the radial dimension of the guide portion 3411a gradually decreases from an end near the connecting portion 3411b to an end far from the connecting portion 3411 b.

Alternatively, the radial dimension of the connecting portion 3411b is unchanged.

In these alternative embodiments, the arrangement is such that, on the one hand, the connection portion 3411b is connected to the guard plate 33, the base plate 31, and the beam body 32, so that the contact area between the connection of the guard plate 33, the base plate 31, and the beam body 32 can be increased, thereby increasing the connection stability between each other; on the other hand, the guide portion 3411a has a smaller radial dimension, and the guide portion 3411a functions as a guide, facilitating the passage through the guard plate 33, the base plate 31 and the beam 32, and can save the space occupied by the guide portion 3411a and save the material.

According to one embodiment of the present application, the radial dimension of the guide portion 3411a gradually decreases in the axial direction away from the connecting portion 3411 b.

In these alternative embodiments, the radial dimension of the guide portion 3411a is gradually reduced, that is, the cross-sectional dimension of the guide portion 3411a is gradually reduced, so that the weight of the sleeve body 3411 can be reduced, while having higher structural strength.

Referring to fig. 7 in combination, fig. 7 is a schematic structural view of a sleeve assembly of a case of a battery according to some embodiments of the present application.

According to one embodiment of the present application, as shown in fig. 5 to 7, the sleeve body 3411 further includes a sealing portion 3411c, the sealing portion 3411c is located at an end of the guiding portion 3411a away from the connecting portion 3411b and is disposed around the guiding portion 3411a, and an end surface of the sealing portion 3411c facing away from the connecting portion 3411b is provided with an inwardly recessed recess 3411d.

In these alternative embodiments, the overall sealability of the case 3 can be further improved by providing the sealing portion 3411 c.

According to an embodiment of the present application, as shown in fig. 5 to 7, the sleeve assembly 34 further includes a first sealing ring 343, the first sealing ring 343 is sleeved on the sleeve body 3411 and located between the guard 33 and the flange 3412, and the first sealing ring 343 is used for sealing the guard 33 and the flange 3412.

In these alternative embodiments, a first seal 343 is disposed between the shield 33 and the flange 3412 to improve the sealing between the shield 33 and the sleeve 341.

Referring to fig. 8 in combination, fig. 8 is a schematic structural view of a battery case according to other embodiments of the present application.

According to one embodiment of the present application, as shown in fig. 4 and 8, the case 3 of the battery further includes a gasket 35 disposed between the base plate 31 and the cover 33, and the gasket 35 is sleeved on the sleeve assembly 34.

In these alternative embodiments, a gasket 35 is provided between the substrate 31 and the shield 33 to improve the sealing performance between the substrate 31 and the shield 33 and to reduce the mechanical fatigue strength of the substrate 31 and the shield 33 in direct contact. In addition, the gasket 35 has a certain cushioning effect, and when the protection plate 33 receives an external impact, the transmission of the external force to the substrate 31 can be reduced, and the deformation of the substrate 31 can be reduced to damage the battery cells.

According to one embodiment of the present application, as shown in fig. 8, the battery case 3 further includes a cover 20 connected to the sleeve assembly 34.

In these alternative embodiments, the coupling between the sleeve assembly 34 and the cover 20 provides a high coupling stability between the sleeve assembly 34 and the cover 20, and also simplifies the assembly of the cover 20, reducing the overall weight of the case 3.

Referring to fig. 9 in combination, fig. 9 is a top view of a case of a battery according to some embodiments of the application.

According to one embodiment of the present application, as shown in fig. 2 and 9, the case 3 further includes a second sealing member 40 disposed between the sleeve assembly 34 and the cover 20, and the second sealing member 40 is used to seal the sleeve assembly 34 and the cover 20.

Optionally, an end surface of the sealing portion 3411c facing away from the connecting portion 3411b is provided with an inwardly recessed recess 3411d, and the second seal 40 is embedded in the recess 3411d.

In these alternative embodiments, a second seal 40 is provided between the sleeve assembly 34 and the cap 20 to improve the sealing performance of the sleeve assembly 34 and the cap 20.

In a second aspect, the application provides a battery comprising a casing 3 of a battery according to the foregoing.

The battery provided by the application comprises the box body 3, the connection of the internal components of the box body 3 is realized through the sleeve assembly 34, and the assembly of the box body 3 is simplified, so that the overall weight of the battery is reduced, and the stability, reliability and safety of the battery are further improved.

In a third aspect, the present application provides an electrical device comprising a load-bearing structure, a battery according to the foregoing and a fixture; the battery is used for providing electric energy; the fixing piece is used for connecting the bearing structure and the sleeve assembly.

The electric device provided by the application comprises the bearing structure, the battery and the fixing piece, wherein the battery is arranged on the bearing structure through the matching of the fixing piece and the sleeve assembly, and the use of parts is saved, so that the electric device has higher integration level.

Optionally, the fixture passes through a through hole of the sleeve assembly to mount the battery on the load bearing structure. The fixing member is selected from bolts, screws or steel nails, etc.

According to some embodiments of the present application, referring to fig. 4 to 8, the present application provides a case 3 of a battery, the case 3 including a base plate 31, a beam 32, a sheathing plate 33, a sleeve assembly 34, a gasket 35, a cover 20, and a second seal 40. The beam 32 is disposed on a side of the substrate 31 facing the battery cells of the battery. The guard 33 is disposed on a side of the substrate 31 facing away from the beam 32. The sleeve assembly 34 includes a sleeve 341, a locking member 342, and a first seal ring 343. Sleeve 341 includes a sleeve body 3411 and a flange 3412. The sleeve body 3411 includes a guide portion 3411a, a connecting portion 3411b and a sealing portion 3411c, the guide portion 3411a and the connecting portion 3411b are disposed along an axial direction of the sleeve body 3411, the guide portion 3411a passes through the guard plate 33, the base plate 31 and the beam 32 and is used for being connected with the cover 20, the flange 3412 is disposed around the connecting portion 3411b and is clamped with the guard plate 33, the locking member 342 is sleeved on the connecting portion 3411b and is located on one side of the beam 32 away from the base plate 31, the connecting portion 3411b passes through the guard plate 33, the base plate 31 and the beam 32, the locking member 342 is in threaded connection with the connecting portion 3411b, and the connecting portion 3411b is matched with the locking member 342 to connect and lock the guard plate 33, the base plate 31 and the beam 32. The radial dimension of the connecting portion 3411b is larger than the radial dimension of the guide portion 3411 a. The radial dimension of the guide portion 3411a gradually decreases in the axial direction away from the connecting portion 3411 b. Sealing portion 3411c is located at an end of guide portion 3411a remote from connecting portion 3411b and is disposed around guide portion 3411a, and an end surface of sealing portion 3411c remote from connecting portion 3411b is provided with concave portion 3411d recessed inward. The first seal ring 343 is sleeved on the sleeve main body 3411 and is located between the guard plate 33 and the flange 3412, and the first seal ring 343 is used for sealing the guard plate 33 and the sleeve. The gasket 35 is disposed between the base plate 31 and the guard plate 33, and the gasket 35 is sleeved on the sleeve assembly 34. The cover 20 is connected to the sleeve assembly 34. The second sealing member 40 is disposed between the sleeve assembly 34 and the cover 20, and the second sealing member 40 is embedded in the recess 3411d, and the second sealing member 40 is used for sealing the sleeve assembly 34 and the cover 20.

The box body 3 of the battery, provided by the application, comprises the base plate 31, the beam body 32, the guard plate 33 and the sleeve component 34, wherein the sleeve component 34 penetrates through the guard plate 33, the base plate 31 and the beam body 32 and connects the guard plate 33, the base plate 31 and the beam body 32, and by arranging one sleeve component 34, the stable connection of the guard plate 33, the base plate 31 and the beam body 32 can be realized, so that the assembly of the guard plate 33, the base plate 31 and the beam body 32 is greatly simplified, the air tightness of the box body 3 can be improved, the overall weight of the box body 3 of the battery is reduced, and the box body 3 of the battery is lighter. Moreover, the case 3 of the battery is applied to the electric device, and the sleeve member 34 has not only the function of connecting the guard plate 33, the base plate 31 and the beam body 32, but also the mounting function, and the battery can be mounted to the electric device through the sleeve member 34, so that the electric device has a higher integration level.

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, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. A battery case comprising:

a substrate;

the beam body is arranged on one side of the base plate, facing the battery unit of the battery;

the guard plate is arranged on one side of the base plate, which is away from the beam body;

the sleeve assembly penetrates through the guard plate, the base plate and the beam body and is used for connecting the guard plate, the base plate and the beam body, the sleeve assembly comprises a sleeve, the sleeve comprises a sleeve main body and a flange encircling the sleeve main body, the sleeve main body penetrates through the guard plate, the base plate and the beam body, and the flange is connected with the guard plate in a clamping mode.

2. The battery case according to claim 1, wherein,

the end face of the flange, which faces the guard plate, is clamped with the end face of the guard plate, which faces the flange.

3. The battery case according to claim 1, wherein,

the sleeve assembly further comprises a locking member which is sleeved on the sleeve body and located on one side of the beam body away from the base plate, and the locking member is configured to be matched with the sleeve so as to lock the guard plate, the base plate and the beam body.

4. The battery case according to claim 3, wherein,

The locking piece is in threaded connection with the sleeve main body.

5. The battery case according to claim 1, wherein,

the box body further comprises a cover body connected with the sleeve assembly.

6. The battery case according to claim 5, wherein,

the sleeve main body comprises a guide part and a connecting part, the guide part and the connecting part are arranged along the axial direction of the sleeve main body, the guide part penetrates through the guard plate, the base plate and the beam body and is used for being connected with the cover body, and the connecting part is connected with the guard plate, the base plate and the beam body.

7. The battery case according to claim 6, wherein,

the radial dimension of the connecting portion is larger than the radial dimension of the guiding portion.

8. The battery case according to claim 7, wherein,

the radial dimension of the guide portion gradually decreases in the axial direction away from the connecting portion.

9. The battery case according to claim 8, wherein,

the sleeve body further comprises a sealing part, the sealing part is located at one end, far away from the connecting part, of the guiding part and surrounds the guiding part, and an inwards concave recess is formed in the end face, facing away from the connecting part, of the sealing part.

10. The battery case according to claim 2, wherein,

the sleeve assembly further comprises a first sealing ring sleeved on the sleeve body and located between the guard plate and the flange, and the first sealing ring is used for sealing the guard plate and the flange.

11. The battery case according to claim 1, wherein,

the box body further comprises a sealing gasket which is arranged between the base plate and the guard plate, and the sealing gasket is sleeved on the sleeve assembly.

12. The battery case according to claim 5, wherein,

the box body further comprises a second sealing piece which is arranged between the sleeve assembly and the cover body and used for sealing the sleeve assembly and the cover body.

13. A battery comprising the case of the battery according to any one of claims 1 to 12.

14. An electrical device, comprising:

a load bearing structure;

the battery of claim 13, for providing electrical energy; and

and the fixing piece is used for connecting the bearing structure and the sleeve assembly.