CN219779091U

CN219779091U - Battery box, battery and power consumption device

Info

Publication number: CN219779091U
Application number: CN202321605278.2U
Authority: CN
Inventors: 贾峰; 高健; 赵义; 梅敏
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-09-29
Anticipated expiration: 2033-06-25

Abstract

The utility model relates to a box body of a battery, the battery and an electric device, wherein the box body comprises a box body and a mounting piece; the box body is used for accommodating the battery monomers; the mounting piece is fixed in the case body, and the mounting piece includes location portion and connects in the connecting portion of location portion, and location portion is used for the lid location cooperation with the battery, and connecting portion is used for case body and lid to be connected. The box body of the battery comprises the box body and the mounting piece, the mounting piece comprises the positioning part and the connecting part connected to the positioning part, the positioning part is used for being matched with the cover body of the battery in a positioning way, the connecting part is used for connecting the box body with the cover body, and the positioning and mounting fixing functions can be realized through the mounting piece, so that the use of other components is saved, the assembly efficiency of the box body and the cover body can be improved, the overall weight of the box body can be reduced, and the box body is lighter.

Description

Battery box, battery and power consumption device

Technical Field

The utility model 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 and the cover body is complex, so how to improve the assembly efficiency of the box body and the cover body is a technical problem to be solved 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 and a cover body can be improved to a certain extent.

In a first aspect, the present utility model provides a battery case, the case including a case body and a mounting member; the box body is used for accommodating the battery monomers; the mounting piece is fixed in the case body, and the mounting piece includes location portion and connects in the connecting portion of location portion, and location portion is used for the lid location cooperation with the battery, and connecting portion is used for case body and lid to be connected.

The box body of the battery provided by the utility model comprises the box body and the mounting piece, wherein the mounting piece comprises the positioning part and the connecting part connected with the positioning part, the positioning part is used for being matched with the cover body of the battery in a positioning way, the connecting part is used for connecting the box body with the cover body, and the positioning and mounting fixing effects can be realized through the mounting piece, so that the use of other components is saved, the assembly efficiency of the box body and the cover body can be improved, the overall weight of the box body can be reduced, and the box body of the battery is lighter. The box body is applied to the battery, so that the battery has higher integration level.

According to one embodiment of the utility model, the connection comprises a screw and a flange; the screw is embedded into the box body; the flange sets up in the one end of screw rod, and the butt in the case body, and the location portion sets up in the one side that the flange deviates from the screw rod.

In these alternative embodiments, so set up, can improve the connection stability between installed part and the case body, effectual increase installed part's locking the performance that drops, can also simplify the overall structure of installed part, easily the manufacturing of installed part.

According to one embodiment of the utility model, the positioning portion comprises a positioning projection extending in the direction of the cover relative to the end face of the flange facing away from the screw.

In these alternative embodiments, the positioning protrusion is more beneficial to processing and manufacturing, and reduces the manufacturing cost of the mounting piece; on the other hand, the positioning protrusion can extend into the cover body, positioning fit between the box body and the cover body can be better realized, and the problem that the cover body slips in the mounting and dismounting processes is limited.

According to one embodiment of the utility model, the mounting member is provided with a connecting hole which communicates the positioning boss, the flange and the screw; the inner wall surface of the bolt surrounding the connecting hole is provided with threads.

In these alternative embodiments, the mounting member is provided with internal threads for cooperation with a bolt or rivet gun to connect the bolt to the mounting member, the mounting member to the tank body, and the connection holes are easy to manufacture.

According to one embodiment of the utility model, the outer diameter of the positioning projection is smaller than the outer diameter of the flange.

In these alternative embodiments, provision is made, on the one hand, for the flange to have a larger outer diameter, which allows an increase in the contact area between the flange and the tank body connection, thus increasing the stability of the connection between each other and improving the stress concentration; on the other hand, the outer diameter of the positioning bulge is smaller, so that the positioning bulge is favorable for being assembled with the cover body, and the occupied space of the positioning bulge and the material are saved.

According to one embodiment of the utility model, the positioning protrusion is an annular structure arranged along an axis surrounding the flange.

In these alternative embodiments, the positioning protrusion is an annular structure, and the annular structure is circumferentially arranged along the axis of the flange, which is beneficial to processing and manufacturing the positioning protrusion and can also improve the tightness of the assembly of the box body and the cover body.

According to one embodiment of the utility model, the positioning projection comprises an arc-shaped section which is formed by extending along the axial direction of the surrounding flange.

In these alternative embodiments, the positioning protrusion is arranged in such a way that the weight of the positioning protrusion can be reduced and the overall load of the case can be reduced compared with the positioning protrusion of the annular structure on the premise that the positioning protrusion is used for positioning the cover.

According to one embodiment of the utility model, the positioning projection comprises a plurality of arcuate segments spaced apart along the axis of the circumferential flange.

In these alternative embodiments, a suitable number of arcuate segments both provide a positioning cover and reduce the overall weight of the case, which is advantageous for weight reduction.

According to one embodiment of the utility model, the positioning portion is integrally formed with the connecting portion.

In these alternative embodiments, the locating portion is integrally provided with the connecting portion. The positioning part and the connecting part have higher second item connection strength, and the positioning part and the connecting part are not easy to fall off when the positioning part and the connecting part are subjected to external force.

According to one embodiment of the utility model, the tank comprises a plurality of mounting elements, at least one of which is arranged at a corner of the tank body.

In these alternative embodiments, the case includes a plurality of mounting members, at least one of which is disposed at a corner of the case body to satisfy positioning of the cover, thereby achieving alignment of the case with the cover, and reducing use of the mounting members while satisfying positioning of the cover, thereby reducing the overall weight of the case.

In a second aspect, the present utility model provides a battery comprising a case, a cover and a battery cell according to the foregoing battery; the cover body covers the box body and encloses an accommodating space for accommodating the battery cells, and is provided with a positioning structure which is in plug-in fit with the positioning part; the battery cell is accommodated in the accommodating space.

The battery provided by the utility model comprises the box body, the cover body and the battery monomer, wherein the mounting piece of the box body can realize the functions of positioning, mounting and fixing at the same time, so that the assembly efficiency of the box body and the cover body can be improved, the connection stability between the box body and the cover body can be improved, and the stability, the reliability and the safety of the battery can be further improved.

According to one embodiment of the utility model, the positioning structure is a mounting hole, and the positioning part extends into the mounting hole.

In these alternative embodiments, the mounting hole is in plug-in fit with the positioning portion, and the plug-in fit enables a higher fastening force and a contact area between the cover body and the box body, so that the cover body and the box body have higher connection stability. Moreover, the locating part stretches into the mounting hole, so that more accurate locating can be provided, and the cover body and the box body are better in alignment effect.

According to one embodiment of the utility model, the battery further comprises a bolt screwed to the mounting member, and the cover is connected to the case through the bolt and the mounting member.

In these alternative embodiments, the battery includes a pull box, a cover, a bolt, and a battery cell, and the positioning of the cover is implemented by matching the mounting piece with the bolt so as to align the cover with the box, so that the assembly efficiency of the box and the cover can be improved, and the cover is covered on the box and encloses into an accommodating space for accommodating the battery cell, thereby improving the connection strength of the cover and the box and improving the overall strength of the battery.

In a third aspect, the utility model provides an electrical device comprising a battery according to the foregoing, the battery being for providing electrical energy.

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

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present utility model 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 utility model;

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

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

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

fig. 5 is a schematic view showing a part of the structure of a case and a cover of a battery according to some embodiments of the present utility model;

fig. 6 is a bottom view of a partial structure of a case and a cover of a battery according to some embodiments of the present utility model;

fig. 7 is a top view showing a partial structure of a case and a cover of a battery according to some embodiments of the present utility model;

fig. 8 is a left side view showing a partial structure of a case and a cover of a battery according to some embodiments of the present utility model;

fig. 9 is a right side view of a partial structure of a case and a cover of a battery according to some embodiments of the present utility model;

fig. 10 is a cross-sectional view showing a partial structure of a case and a cover of a battery according to some embodiments of the present utility model;

fig. 11 is a schematic structural view of a mounting member of a case of a battery according to some embodiments of the present utility model;

fig. 12 is a schematic structural view of a mounting member of a case of a battery according to other embodiments of the present utility model;

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;

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

31. a case body;

32. a mounting member; 321. a positioning part; 3211. positioning the bulge; 3211a, a ring structure; 3211b, an arcuate segment; 322. a connection part; 3221. a screw; 32211. a thread; 3222. a flange;

33. and a connection hole.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

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 utility model 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 utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model 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 utility model. 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 utility model, 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 utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present utility model 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 utility model, the character "/" generally indicates that the front and rear related objects are an or relationship.

In the embodiments of the present utility model, 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 utility model 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 utility model in any way.

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

In the present utility model, 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 utility model. 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 utility model. 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 utility model 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 utility model 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 improve the charge or discharge of the battery cell affected by liquid or other foreign matters to some extent.

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

In some embodiments, in the process of assembling the cover body and the box body, the cover body needs to be covered on the box body to enclose an accommodating space for accommodating the battery unit, but the cover body is easy to deviate, so that the cover body is not aligned with the box body, the assembly effect is affected, and the assembly efficiency of the box body and the cover body is reduced. Under normal conditions, a positioning piece is arranged between the cover body and the box body to assist the cover body to be aligned with the box body, but the number of battery components is increased, and the mounting procedure and the positioning procedure of the positioning piece are additionally increased, so that the assembly efficiency of the box body and the cover body is not improved. 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 conducted intensive studies and have proposed a battery case according to the present utility model, which includes a case body and a mounting member, the mounting member includes a positioning portion and a connecting portion connected to the positioning portion, the positioning portion is used for positioning and cooperating with a lid of the battery, the connecting portion is used for connecting the case body and the lid, and positioning and mounting fixing effects can be achieved simultaneously by the mounting member, thereby saving use of other members, not only improving assembly efficiency of the case and the lid, but also reducing overall weight of the case, and making the case of the battery 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 utility model 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 utility model 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 utility model. 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 utility model, 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 according to some embodiments of the present utility model. The battery 100 includes a case assembly and a battery cell 10. In some embodiments, the case assembly may include a cover 20 and a case 30, the cover 20 and the case 30 being covered with each other, the cover 20 and the case 30 together defining a receiving space for receiving the battery cell 10. The case 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 30, so that the cover 20 and the case 30 together define an accommodating space; the cover 20 and the case 30 may be hollow structures with one side open, and the open side of the cover 20 may be closed to the open side of the case 30. Of course, the case assembly formed by the cover 20 and the case 30 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

In the electric device, the cover 20 may be located on the upper side of the case 30 or may be located on the lower side of the case 30.

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 utility model. 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 utility model. 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 utility model.

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 utility model; fig. 5 is a schematic view showing a part of the structure of a case and a cover of a battery according to some embodiments of the present utility model; fig. 6 is a bottom view of a partial structure of a case and a cover of a battery according to some embodiments of the present utility model; fig. 7 is a top view illustrating a partial structure of a case and a cover of a battery according to some embodiments of the present utility model.

As shown in fig. 4 to 7, the present utility model proposes a case 30 of a battery, the case 30 including a case body 31 and a mounting member 32. The case body 31 serves to accommodate the battery cell 10. The mounting member 32 is fixed to the case body 31, and the mounting member 32 includes a positioning portion 321 and a connecting portion 322 connected to the positioning portion 321, the positioning portion 321 is used for positioning and matching with the cover 20 of the battery, and the connecting portion 322 is used for connecting the case body 31 with the cover 20.

The case body 31 may have various shapes, regular, such as a rectangular parallelepiped, a square, a cylinder, etc., and may have other irregular shapes, and the shape of the case body 31 should not affect the accommodation of the battery cells 10, and the present utility model does not limit the specific shape of the case body 31. The case body 31 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 material, which has advantages of light weight, high strength, high impact resistance, and the like.

The mounting member 32 is fixed to the case body 31, and the mounting member 32 includes a positioning portion 321 and a connecting portion 322, and the positioning portion 321 is connected to the connecting portion 322. The connection portion 322 is used for connecting the case body 31 and the cover 20, the connection portion 322 may be disposed between the case body 31 and the cover 20, and the connection portion 322 may be partially embedded in the case body 31.

In the embodiment of the present utility model, the positioning portion 321 is configured to be in positioning fit with the cover 20 of the battery, and a positioning structure that is matched with the positioning portion 321 may be disposed on the corresponding cover 20, and the positioning structure may be a positioning hole, a positioning groove, a positioning boss, a positioning buckle, or the like.

In the embodiment of the present utility model, the connection portion 322 is used for connecting the case body 31 with the cover 20, the mounting member 32 is connected with the case body 31 through the connection portion 322, and various connection manners of the case body 31 and the mounting member 32 may be used, such as riveting, screwing, welding, bonding, etc., or the case body 31 and the mounting member 32 are integrally manufactured as a whole, and the case body 31 and the mounting member 32 have high connection strength, and are not easy to fall off when being impacted.

Illustratively, the mounting member 32 includes a positioning portion 321 and a connecting portion 322 connected to the positioning portion 321, the positioning portion 321 is a boss extending toward the cover 20 relative to an end surface of the connecting portion 322, and accordingly, the cover 20 is provided with a groove matching with the boss, and the boss and the groove form a fitting structure to realize positioning matching of the case 30 and the cover 20 of the battery.

Illustratively, the mounting member 32 includes a positioning portion 321 and a connecting portion 322 connected to the positioning portion 321, the positioning portion 321 is a recess recessed inward relative to an end surface of the connecting portion 322, and accordingly, the cover 20 is provided with a boss matching with the recess, and the boss and the groove form a fitting structure to realize positioning matching of the case 30 and the cover 20 of the battery.

According to the battery box 30 provided by the utility model, the box 30 comprises the box body 31 and the mounting piece 32, the mounting piece 32 comprises the positioning part 321 and the connecting part 322 connected to the positioning part 321, the positioning part 321 is used for being in positioning fit with the battery cover 20, the connecting part 322 is used for connecting the box body 31 with the battery cover 20, and the positioning and mounting fixing functions can be realized simultaneously through the mounting piece 32, so that the use of other components is saved, the assembly efficiency of the box 30 and the cover 20 is improved, the overall weight of the box 30 is reduced, and the battery box 30 is lighter. The case 30 is applied to the battery so that the battery has a higher integration level.

Referring to fig. 8 and 9 in combination, fig. 8 is a left side view showing a partial structure of a case and a cover of a battery according to some embodiments of the present utility model; fig. 9 is a right side view of a partial structure of a case and a cover of a battery according to some embodiments of the present utility model.

According to one embodiment of the present utility model, as shown in fig. 5, 8 and 9, the connection portion 322 includes a screw 3221 and a flange 3222. Screw 3221 is embedded in case body 31. The flange 3222 is disposed at one end of the screw 3221 and abuts against the case body 31, and the positioning portion 321 is disposed at one side of the flange 3222 away from the screw 3221.

In an embodiment of the present utility model, the connection portion 322 includes a screw 3221 and a flange 3222. The screw 3221 may be a hollow structure. Screw 3221 is embedded into case body 31, and screw 3221 is at least partly the deformation district, and deformation district is crumpled deformation under the pulling force effect to cooperation flange 3222 presss from both sides tight case body 30. The flange 3222 is provided at one end of the screw 3221, and when the mounting member 32 is mounted on the case 30, the flange 3222 is engaged with an end face of the case 30 and is clamped with the screw 3221. Alternatively, the screw 3221 is engaged with a bolt to connect and fix the case 30 with the cover 20.

Illustratively, screw 3221 is embedded within a first mounting hole of box 30, and the radial dimension of the first mounting hole is smaller than the radial dimension of flange 3222. The gun head of the hand riveter extends into the hollow structure of the screw 3221 and is connected with the screw 3221. By applying a certain rivet force upwards, the deformation area of the screw 3221 is deformed in a crumple way, and the deformation area of the screw 3221 and the flange 3222 cooperate to form a clamping force on the box body 30. The second mounting hole has been seted up to lid 20, and flange 3222 deviates from the mounting surface of screw rod 3221 and supports to the lid 20, and location portion 321 and second mounting hole location cooperation, and the bolt passes second mounting hole, location portion 321, flange 3222 in proper order and stretches into the hollow structure of screw rod 3221, realizes locking with mounting 32.

In embodiments of the utility model where the radial dimension of flange 3222 is greater than the radial dimension of screw 3221, it is understood that the forward projected area of screw 3221 on flange 3222 is less than the area of flange 3222.

In the embodiment of the present utility model, the screw 3221 and the flange 3222 are of an integral structure, or the screw 3221 and the flange 3222 are of a separate structure. In the case where the screw 3221 and the flange 3222 are integrally formed, the positioning portion 321 and the flange 3222 are integrally formed, that is, the connecting portion 322 and the positioning portion 321 are integrally formed; alternatively, the positioning portion 321 and the flange 3222 are in a separate structure, that is, the connecting portion 322 and the positioning portion 321 are in a separate structure, and it is understood that the positioning portion 321 is mounted on the connecting portion 322 of the finished product to form the mounting member 32.

In these alternative embodiments, the connection stability between the mounting member 32 and the case body 31 can be improved, the anti-loosening and falling-off performance of the mounting member 32 can be effectively increased, the overall structure of the mounting member 32 can be simplified, and the processing and manufacturing of the mounting member 32 can be facilitated.

Referring to fig. 10 in combination, fig. 10 is a cross-sectional view illustrating a partial structure of a case and a cover of a battery according to some embodiments of the present utility model.

According to one embodiment of the present utility model, as shown in fig. 10, the positioning portion 321 includes a positioning protrusion 3211 extending toward the cover 20 with respect to an end surface of the flange 3222 facing away from the screw 3221.

In the embodiment of the utility model, the positioning portion 321 comprises a positioning protrusion 3211, the positioning protrusion 3211 extends towards the cover 20 relative to the end surface of the flange 3222 facing away from the screw 3221, and the positioning protrusion 3211 is in positioning fit with the cover 20 of the battery. Specifically, the positioning protrusion 3211 extends into the cover 20 and is in positioning engagement with the cover 20 to achieve alignment between the case 30 and the cover 20.

In an embodiment of the present utility model, the shape of the positioning protrusion 3211 includes a circular, rectangular, hexagonal, triangular, or annular structure, or the like.

In these alternative embodiments, the positioning protrusion 3211 is more beneficial to manufacturing and reduces the manufacturing cost of the mounting 32; on the other hand, the positioning protrusion 3211 may extend into the cover 20, so as to better realize positioning and matching between the case 30 and the cover 20, and limit the slipping of the cover 20 during the mounting and dismounting process.

According to one embodiment of the present utility model, as shown in fig. 10, the mounting member 32 is provided with a connection hole 33, and the connection hole 33 communicates with the positioning protrusion 3211, the flange 3222 and the screw 3221. The inner wall surface of the screw 3221 surrounding the connection hole 33 is provided with threads 32211.

In the embodiment of the present utility model, the mounting member 32 is provided with a connection hole 33, the connection hole 33 communicates with the positioning protrusion 3211, the flange 3222 and the screw 3221, it is understood that the connection hole 33 includes a first hole, a second hole and a third hole which are sequentially communicated, the positioning protrusion 3211 is provided with the first hole, the flange 3222 is provided with the second hole, and the screw 3221 is provided with the third hole, where the first hole and the second hole are through holes, and the third hole may be a through hole or a blind hole. At least part of the inner wall surface of the third hole is provided with threads 32211, and the threads 32211 are used for being matched with external threads 32211 of the gun head of the rivet pulling gun so as to achieve the rivet pulling effect.

In the embodiment of the present utility model, a head or a bolt of a hand riveter is provided with a connection hole 33 through a mounting member 32, and is connected with an inner wall surface screw 32211 provided in the connection hole 33 of a screw 3221.

In these alternative embodiments, the mounting member 32 is provided with internal threads 32211 for mating with a bolt or hand riveter to connect the bolt with the mounting member 32, the mounting member 32 with the tank body 31, and the attachment aperture 33 is easy to manufacture.

According to one embodiment of the utility model, the outer diameter of the locating projection 3211 is smaller than the outer diameter of the flange 3222.

Alternatively, the outer diameter of the positioning protrusion 3211 is gradually increased from an end close to the flange 3222 to an end distant from the flange 3222, that is, the positioning protrusion 3211 is formed in a flared shape. So arranged, the bolts are conveniently inserted into the mounting member 32.

In these alternative embodiments, provision is made, on the one hand, that the flange 3222 has a larger outer diameter, which enables an increase in the contact area between the connection of the flange 3222 and the tank body 31, thereby increasing the stability of the connection between each other and improving the stress concentration; on the other hand, the positioning projection 3211 has a smaller outer diameter, which is advantageous for assembly with the cover 20, and can save space occupied by the positioning projection 3211, as well as save material.

Referring to fig. 11 in combination, fig. 11 is a schematic structural view of a mounting member of a case of a battery according to some embodiments of the present utility model.

According to one embodiment of the utility model, as shown in fig. 10 and 11, the positioning protrusion 3211 is an annular structure 3211a disposed along an axis around the flange 3222.

In these alternative embodiments, the positioning protrusion 3211 is an annular structure 3211a, and the annular structure 3211a is disposed around the axis of the flange 3222, which is beneficial to manufacturing the positioning protrusion 3211 and improving the tightness of the assembly of the case 30 and the cover 20.

Referring to fig. 12 in combination, fig. 12 is a schematic structural view of a mounting member of a case of a battery according to other embodiments of the present utility model.

According to one embodiment of the present utility model, as shown in fig. 12, the positioning protrusion 3211 includes an arc-shaped segment 3211b, and the arc-shaped segment 3211b is formed to extend in the axial direction around the flange 3222.

In the embodiment of the present utility model, the positioning protrusion 3211 includes an arc segment 3211b, and the number of arc segments 3211b may be one or more, it is understood that the arc segment 3211b is a ring structure 3211a with a notch.

Optionally, the radius angle corresponding to the arc segment 3211b is 60 ° to 300 °.

More optionally, the radius angle corresponding to the arc segment 3211b is 60 ° to 180 °.

In these alternative embodiments, the positioning protrusion 3211 is configured such that the weight of the positioning protrusion 3211 can be reduced and the overall load of the case 30 can be reduced as compared to the positioning protrusion 3211 of the annular structure 3211a on the premise that the positioning protrusion 3211 is satisfied for positioning the cover 20.

According to one embodiment of the utility model, the positioning protrusion 3211 includes a plurality of arc segments 3211b, and the plurality of arc segments 3211b are spaced apart along an axial direction around the flange 3222.

Optionally, the radius angle corresponding to the arc segment 3211b is 60 ° to 120 °.

Optionally, the number of arc segments 3211b is 2-4, and a plurality of arc segments 3211b are arranged at intervals along the axial direction around the flange 3222

Illustratively, the positioning protrusion 3211 includes 2 arc segments 3211b, where the 2 arc segments 3211b are spaced and oppositely disposed along an axial direction around the flange 3222, and a central angle corresponding to the arc segments 3211b is 120 °.

In these alternative embodiments, a suitable number of arcuate segments 3211b may serve to both position the cover 20 and reduce the overall weight of the housing 30, which may facilitate weight reduction of the housing 30.

According to one embodiment of the present utility model, the positioning portion 321 is integrally formed with the connecting portion 322.

In the embodiment of the present utility model, the positioning portion 321 and the connecting portion 322 are integrally formed, and the embodiment of the present utility model does not limit the forming manner of the positioning portion 321 and the connecting portion 322.

Alternatively, the positioning portion 321 and the connecting portion 322 are integrally formed by stamping. The structure of the connection portion 322 itself is less affected during the press forming process. Alternatively, the positioning portion 321 and the connecting portion 322 are formed by vacuum die casting.

In these alternative embodiments, the positioning portion 321 is integrally provided with the connecting portion 322. So set up for location portion 321 and connecting portion 322 have higher joint strength, and both are difficult for taking place to drop when receiving external force.

According to one embodiment of the present utility model, as shown in fig. 4, the case 30 includes a plurality of mounting members 32, and at least one mounting member 32 is disposed at a corner of the case body 31.

In the embodiment of the present utility model, a plurality of first mounting holes are formed in the case body 31, wherein a part of the mounting holes are used for mounting the mounting pieces 32, at least one mounting piece 32 is mounted in the first mounting holes of the corner of the case body 31, and the other part of the mounting holes are used for mounting the rivet nuts.

Illustratively, the box 30 is in a rectangular structure, the box 30 includes 4 mounting members 32 and N rivet nuts, the box body 31 is provided with n+4 first mounting holes, the 4 mounting members 32 are respectively disposed in the first mounting holes at the 4 corners of the box body 31, and the N rivet nuts are respectively disposed in the N first mounting holes.

In these alternative embodiments, the case 30 includes a plurality of mounting members 32, at least one mounting member 32 is provided at a corner of the case body 31 to satisfy the positioning of the cover 20, thereby achieving the alignment of the case 30 with the cover 20, and the use of the mounting members 32 is reduced while satisfying the positioning of the cover 20, thereby reducing the overall weight of the case 30.

In a second aspect, the present utility model provides a battery comprising a case 30, a cover 20 and a battery cell 10 according to the aforementioned battery. The cover body 20 covers the box body 30 and encloses an accommodating space for accommodating the battery cells 10, and the cover body 20 is provided with a positioning structure which is in plug-in fit with the positioning part 321. The battery cell 10 is accommodated in the accommodation space.

The battery provided by the utility model comprises the box body 30, the cover body 20 and the battery monomer 10, wherein the mounting piece 32 of the box body 30 can realize the functions of positioning, mounting and fixing, so that the assembly efficiency of the box body 30 and the cover body 20 can be improved, the connection stability between the box body 30 and the cover body 20 can be improved, and the stability, reliability and safety of the battery can be further improved.

According to one embodiment of the present utility model, the positioning structure is a mounting hole, and the positioning portion 321 extends into the mounting hole.

In these alternative embodiments, the mounting hole is in plug-in fit with the positioning portion 321, and the plug-in fit enables a higher fastening force and a contact area between the cover 20 and the case 30, so that the cover and the case have higher connection stability. Moreover, the positioning portion 321 extends into the mounting hole, so that more accurate positioning can be provided, and the alignment effect of the cover 20 and the box 30 is better.

According to one embodiment of the present utility model, the battery further includes a bolt coupled to the screw 32211 of the mounting member 32, and the cover 20 is coupled to the case 30 through the bolt and the mounting member 32.

In these alternative embodiments, the battery includes the pull case 30, the cover 20, the bolt and the battery cell 10, and the positioning of the cover 20 is achieved by the fitting of the mounting member 32 and the bolt to align the cover 20 with the case 30, so that the assembly efficiency of the case 30 and the cover 20 can be improved, and the cover 20 is covered on the case 30 and encloses an accommodating space for accommodating the battery cell 10, thereby improving the connection strength of the cover 20 and the case 30 to improve the overall strength of the battery.

According to some embodiments of the present utility model, referring to fig. 4 to 12, the present utility model provides a case 30 of a battery, the case 30 including a case body 31 and a mounting member 32. The case body 31 serves to accommodate the battery cell 10. The case 30 includes a plurality of mounting members 32, and at least one mounting member 32 is provided at a corner of the case body 31. The mounting member 32 includes a positioning portion 321 and a connecting portion 322 connected to the positioning portion 321, wherein the positioning portion 321 is used for positioning and matching with the cover 20 of the battery, the connecting portion 322 is used for connecting the box body 31 with the cover 20, and the positioning portion 321 and the connecting portion 322 are integrally formed. The connection portion 322 includes a screw 3221 and a flange 3222, the screw 3221 is embedded in the tank body 31, and the flange 3222 is provided at one end of the screw 3221 and abuts against the tank body 31. The positioning portion 321 is disposed on one side of the flange 3222 away from the screw 3221, the positioning portion 321 is a positioning protrusion 3211 extending towards the cover 20 relative to the end surface of the flange 3222 away from the screw 3221, the positioning protrusion 3211 is an annular structure 3211a disposed along an axis surrounding the flange 3222, and an outer diameter of the positioning protrusion 3211 is smaller than an outer diameter of the flange 3222. The attachment 32 is provided with a connection hole 33, and the connection hole 33 penetrates the positioning boss 3211 and the flange 3222 and extends inside the screw 3221, and at least part of the inner wall surface of the connection hole 33 of the screw 3221 is provided with threads 32211.

According to the battery box 30 provided by the utility model, the box 30 comprises the box body 31 and the mounting piece 32, the mounting piece 32 comprises the positioning part 321 and the connecting part 322 connected to the positioning part 321, the positioning part 321 is used for being in positioning fit with the battery cover 20, the connecting part 322 is used for connecting the box body 31 with the battery cover 20, and the positioning and mounting fixing functions can be realized simultaneously through the mounting piece 32, so that the use of other components is saved, the assembly efficiency of the box 30 and the cover 20 can be improved, the overall weight of the box 30 can be reduced, the box 30 of the battery is lighter, and the battery with the box 30 has higher integration level.

While the utility model 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 utility model, 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 utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A battery case comprising:

the box body is used for accommodating the battery monomers;

the mounting piece is fixed on the box body and comprises a positioning part and a connecting part connected with the positioning part, the positioning part is used for being matched with a cover body of the battery in a positioning way, and the connecting part is used for connecting the box body with the cover body;

the connection part includes:

a screw embedded in the case body;

the flange is arranged at one end of the screw rod and is abutted to the box body, and the positioning part is arranged at one side of the flange, which is away from the screw rod.

2. The cabinet according to claim 1, wherein,

the positioning part comprises a positioning protrusion which extends towards the cover body relative to the end surface of the flange, which is away from the screw rod.

3. The cabinet according to claim 2, wherein,

the mounting piece is provided with a connecting hole, and the connecting hole is communicated with the positioning protrusion, the flange and the screw;

the inner wall surface of the screw rod surrounding the connecting hole is provided with threads.

4. The cabinet according to claim 3, wherein,

the outer diameter of the positioning bulge is smaller than that of the flange.

5. The cabinet according to claim 3, wherein,

the positioning protrusion is an annular structure arranged along an axis surrounding the flange.

6. The cabinet according to claim 3, wherein,

the positioning protrusion comprises an arc-shaped section, and the arc-shaped section extends along the axial direction surrounding the flange.

7. The cabinet according to claim 6, wherein,

the positioning protrusion comprises a plurality of arc-shaped sections, and the arc-shaped sections are arranged at intervals along the axial direction encircling the flange.

8. The cabinet according to claim 1, wherein,

the positioning part and the connecting part are integrally formed.

9. The cabinet according to claim 8, wherein,

the box body comprises a plurality of mounting pieces, and at least one mounting piece is arranged at the corner of the box body.

10. A battery, comprising:

a cabinet according to any one of claims 1 to 9;

the cover body covers the box body and encloses an accommodating space, and is provided with a positioning structure which is in plug-in fit with the positioning part;

and the battery unit is accommodated in the accommodating space.

11. The battery of claim 10, wherein the battery is configured to provide the battery with a plurality of cells,

the positioning structure is a mounting hole, and the positioning part extends into the mounting hole.

12. The battery of claim 10, wherein the battery is configured to provide the battery with a plurality of cells,

the box body is characterized by further comprising a bolt, the bolt is in threaded connection with the mounting piece, and the cover body is connected with the box body through the bolt and the mounting piece.

13. An electrical device comprising a battery as claimed in claim 11 or 12 for providing electrical energy.