CN116526075B

CN116526075B - Mounting seat, end plate assembly, battery and electricity utilization device

Info

Publication number: CN116526075B
Application number: CN202310804996.0A
Authority: CN
Inventors: 李宏磊; 燕鑫; 潘鑫; 岳贵成
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2024-06-07
Anticipated expiration: 2043-07-03
Also published as: CN116526075A

Abstract

The application discloses a mounting seat, an end plate assembly, a battery and an electric device. The mounting seat comprises an output electrode connecting piece and a plug-in piece. The output electrode connecting piece is used for being connected with the output electrode of the battery; the plug connector is connected with the output pole connector, at least part of the plug connector comprises a deformation material, at least part of the plug connector part comprising the deformation material forms at least part of a plug face, and at least part of the plug face is used for interference plug fit with the end plate of the battery. At least part of the material of the plug connector is provided with a forming variable material, when the plug connector is in interference plug connection with the end plate, the plug connector can generate plastic deformation or elastic deformation, so that the plug connector can be more firmly fixed on the end plate, the shaking probability of the mounting seat during the working of the battery can be reduced, the shaking probability of the output electrode on the output electrode connector can be reduced, the output electrode is not easy to break during the working, and the reliability of power transmission of the output electrode is improved.

Description

Mounting seat, end plate assembly, battery and electricity utilization device

Technical Field

The application relates to a battery component, in particular to a mounting seat, an end plate assembly, a battery and an electric device.

Background

The mounting seat of the output electrode of the battery is a component for fixing the output electrode, and the mounting seat is easy to loose after being mounted, so that the output electrode is easy to break in the power transmission process, and the reliability of the power transmission of the output electrode is affected.

Disclosure of Invention

In view of the above, the present application provides a mounting base, an end plate assembly, a battery and an electric device, which can improve the reliability of connection between the mounting base and the end plate, so as to reduce the probability of shaking of the mounting base.

In a first aspect, the application provides a mount comprising an output pole connector and a plug connector. The output electrode connecting piece is used for being connected with the output electrode of the battery; the plug connector is connected with the output pole connector, at least part of the plug connector comprises a deformation material, at least part of the plug connector comprising the deformation material forms at least part of a plug face, and at least part of the plug face is used for interference plug fit with the end plate of the battery.

The material of at least part of the plug connector is set to be a forming variable material, when the plug connector is in interference fit with the end plate, the plug connector can generate plastic deformation or elastic deformation, so that the plug connector can be more firmly fixed on the end plate, and the plug connector is made of rigid material or material with higher hardness, even if the plug connector is in interference fit with the end plate, the plug connector is easy to loosen due to vibration influence when the battery is used in a dynamic occasion, and the plug connector is difficult to assemble due to higher hardness of the rigid connector during assembly. Therefore, the material of at least part of the plug connector is set to be a deformation material, so that the plug connector can be more firmly fixed on the end plate, the shaking probability of the mounting seat during the operation of the battery is reduced, the shaking probability of the output electrode on the output electrode connecting piece is reduced, the output electrode is not easy to form open circuit during the operation, and the reliability of the power transmission of the output electrode is improved; meanwhile, in the assembling process, the assembling resistance can be reduced, and the assembling efficiency is improved.

In some embodiments, the plug comprises a plug body and an expansion member, wherein the expansion member is arranged on the outer surface of the plug body, and the plug surface of the expansion member is used for being in interference plug fit with the end plate. From this, can reduce the grafting damage of grafting body to can set up different materials with expanding piece and grafting body, if the grafting body can adopt the great material of intensity in order to satisfy the requirement to expanding piece support, expanding piece can adopt the great material of deformation, in order to realize the interference grafting cooperation with the end plate more easily.

In some embodiments, the hardness of the expansion member is less than the hardness of the plug body. Therefore, when the expansion piece is in plug-in fit with the end plate, the expansion piece is easier to compress and deform, so that the plug-in piece can be inserted into the end plate in an interference plug-in mode more easily.

In some embodiments, the expansion member is a tubular structure. Therefore, the periphery of the expansion piece is spliced with the end plate, and the expansion piece is spliced with the end plate more firmly by adopting a material (elastic deformation or plastic deformation) which is easier to deform.

In some embodiments, the outer wall of the expansion element is formed with a plug projection extending in the plug direction of the plug element. Compression deformation generated by the inserting protrusions is used for being inserted and matched with the inserting holes of the end plates, so that larger interference can be generated, and the inserting piece can be inserted and connected with the end plates more firmly.

In some embodiments, the plug body is integrally formed with the expansion member. In the process of plugging and unplugging the plug connector, the plug connector body and the expansion piece can generate relative friction force, the plug connector body and the expansion piece are arranged into an integrated molding, and the connection firmness of the plug connector body and the expansion piece can be improved, so that the separation probability of the plug connector body and the expansion piece is reduced.

In some embodiments, the output pole connecting piece comprises a base and a cover body, the base is connected with the plug-in piece, the base is provided with a groove for accommodating the output pole, the cover body is covered at the notch position of the groove, one end of the cover body is rotatably connected with the base, and the other end of the cover body is connected with the base in an openable and closable manner. Therefore, in the working process of the battery, the cover body can be firmly covered on the base, so that the output electrode can be fixed by the output electrode connecting piece, and the output electrode is protected.

In some embodiments, the cover is coupled to the base by a coupling portion configured to be capable of bending deformation to enable the cover to rotate relative to the base. The rotatable connection of one end of the cover body and the base is realized by utilizing the bending deformation of the connecting part, and compared with the structure adopting a hinge to realize the rotatable connection, the structure of the mounting seat can be simplified.

In some embodiments, the material of the connection is a plastic or elastic insulating material; and/or the hardness of the cover body and the hardness of the base are both greater than the hardness of the connecting part. Therefore, the cover body can be opened or closed from the base by utilizing plastic deformation or elastic deformation of the connecting part, the hardness of the cover body and the base is larger than that of the connecting part, the cover body and the base can have certain strength, the hardness of the connecting part is small relative to that of the cover body and the base, and the connecting part can be bent more easily, so that the cover body and the base are connected in a rotating way.

In some embodiments, the cover and the base are made of insulating materials. Thus, the output electrode can be insulated and protected.

In some embodiments, the cover, the connection, and the base are of unitary construction. Compared with the structure that both ends of the cover body are clamped with the base, the reliability of connection between the cover body and the base can be improved, so that reliable protection and fixation of the output electrode in the working process of the battery are ensured.

In a second aspect, the present application provides an end plate assembly comprising an end plate and the mount of the first aspect. Wherein, one end of the end plate is provided with a plug hole; the plug connector is in interference plug fit with the plug hole. The plug hole is in interference plug fit with the plug piece, so that the plug piece of the mounting seat is firmly fixed on the end plate, the shaking probability of the mounting seat relative to the end plate can be reduced, the output electrode can be well fixed, and the output electrode can stably and continuously output current.

In a third aspect, the present application provides a battery comprising a cell and the end plate assembly of the second aspect. Wherein the output electrode is electrically connected with the battery monomer; the output electrode is arranged on the output electrode connecting piece. The battery cell may output current through the output electrode on the end plate assembly, and the effect is the same as the technical effect of the end plate assembly of the second aspect, which is not described herein.

In a fourth aspect, the present application provides an electrical device comprising the battery of the fourth aspect, the battery being for providing electrical energy to the electrical device. The effects are the same as those of the battery of the fourth aspect, and will not be described in detail herein.

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

Drawings

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

FIG. 1 is a schematic diagram of an electric device as a vehicle according to an embodiment of the present application;

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

fig. 3 is a schematic diagram illustrating an exploded structure of a battery cell according to some embodiments of the present application;

FIG. 4 is an isometric view of a mounting base according to an embodiment of the present application;

FIG. 5 is an isometric view of a mounting base according to another embodiment of the present application;

FIG. 6 is an isometric view of an endplate assembly according to an embodiment of the application;

FIG. 7 is a cross-sectional view of C-C of FIG. 6;

fig. 8 is an isometric view of a battery according to an embodiment of the application.

Reference numerals in the specific embodiments are as follows:

1000. a vehicle;

100. A battery;

10. A case; 11. a lower box body; 12. an upper cover;

20. A battery cell; 21. a top cover assembly; 21a, electrode terminals; 22. a housing; 23. an electrode assembly; 23a, positive electrode tab; 23b, negative electrode ear;

30. An end plate assembly; A. a first direction; 31. an end plate; 31a, plug holes; 32. a mounting base; 321. an output electrode connecting piece; 3211. a base; 3211a, grooves; 3212. a cover body; 3213. a connection part; 322. a plug-in component; 3221. a plug body; 3222. an expansion member; 3222a, a plug protrusion; B. the plugging direction;

200. A controller;

300. a motor.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

The mounting seat of the output electrode of the battery is a part for fixing the output electrode, and the mounting seat is easy to loose after being mounted. For example, the mounting seat is connected with the base by adopting a buckle or a rotating shaft, and the mounting seat and the base are connected in a mode of being convenient to assemble and disassemble, but a movable gap exists between the mounting seat and the base, so that the mounting seat is easy to shake relative to the base when the battery dynamic working scene is used, the output electrode is also caused to shake, and the long-time working can possibly cause disconnection, so that the battery cannot work stably.

In view of the above, the application provides a mounting seat, wherein at least part of the plug connector is made of a molding material, and when the plug connector is in interference fit with the end plate, the plug connector can generate plastic deformation or elastic deformation, so that the plug connector can be more firmly fixed on the end plate. The plug connector is made of rigid materials or materials with high hardness, even if the plug connector is in interference fit with the end plate, the plug connector is easy to loosen under the influence of vibration when the battery is used in a dynamic occasion, and the plug connector is difficult to assemble due to the high hardness of the rigid part during assembling. Therefore, the material of at least part of the plug connector is set to be a deformation material, so that the plug connector can be more firmly fixed on the end plate, the shaking probability of the mounting seat during the operation of the battery is reduced, the shaking probability of the output electrode on the output electrode connecting piece is reduced, the output electrode is not easy to form open circuit during the operation, and the reliability of the power transmission of the output electrode is improved; meanwhile, in the assembling process, the assembling resistance can be reduced, and the assembling efficiency is improved.

The embodiment of the application provides an electric device, which comprises a battery, wherein the battery is used for providing electric energy for the electric device.

The powered device may include, but is not limited to, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiments will take an electric device according to some embodiments 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 10 and at least one battery cell 20, and the battery cell 20 is accommodated in the case 10. The case 10 is used to provide an accommodating space for the battery cell 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a lower case 11 and an upper cover 12, the lower case 11 and the upper cover 12 being covered with each other, the lower case 11 and the upper cover 12 together defining a receiving space for receiving the battery cell 20. The upper cover 12 may have a hollow structure with an inlet at one end, the lower case 11 may have a plate-like structure, and the lower case 11 is covered on the inlet side of the upper cover 12 so that the lower case 11 and the upper cover 12 together define an accommodating space; the lower case 11 and the upper cover 12 may each have a hollow structure having one inlet, and the inlet side of the lower case 11 may be closed to the inlet side of the upper cover 12. Of course, the lower case 11 formed by the lower case 11 and the upper cover 12 may be of various shapes, such as T-shape, rectangular parallelepiped, etc.

In the battery 100, the plurality of battery cells 20 may be connected in series, parallel or a series-parallel connection, wherein the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the lower box 11; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 20 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 the lower case 11. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, fig. 3 is an exploded view of a battery cell 20 according to some embodiments of the present application. The battery cell 20 refers to the smallest unit constituting the battery. The battery cell 20 includes a top cap assembly 21, a case 22, an electrode assembly 23, and other functional components.

The top cap assembly 21 refers to a member that is covered at the introduction port of the case 22 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the top cover assembly 21 may be adapted to the shape of the housing 22 to fit the housing 22. Alternatively, the top cover assembly 21 may be made of a material having a certain hardness and strength (such as an aluminum alloy), so that the top cover assembly 21 is not easily deformed when being extruded and collided, and the battery cell 20 has a higher structural strength, and the safety performance is improved. The cap assembly 21 may be provided with functional parts such as electrode terminals 21 a. The electrode terminal 21a may be used to be electrically connected with the electrode assembly 23 for outputting or inputting electric power of the battery cell 20. In some embodiments, a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold may also be provided on the top cap assembly 21. The material of the top cover assembly 21 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application is not limited thereto. In some embodiments, insulation may also be provided on the inside of the cap assembly 21, which may be used to isolate electrical connection components within the housing 22 from the cap assembly 21 to reduce the risk of shorting. By way of example, the insulation may be plastic, rubber, or the like.

The case 22 is an assembly for cooperating with the top cap assembly 21 to form an internal environment of the battery cell 20, wherein the formed internal environment may be used to accommodate the electrode assembly 23, the electrolyte, and other components. The case 22 and the top cap assembly 21 may be separate members, and an introduction port may be provided in the case 22, and the top cap assembly 21 covers the introduction port to form an internal environment of the battery cell 20. It is also possible to integrate the top cover assembly 21 and the housing 22, but specifically, the top cover assembly 21 and the housing 22 may form a common connection surface before other components are put into the housing, and when it is necessary to encapsulate the inside of the housing 22, the top cover assembly 21 is then covered with the housing 22. The housing 22 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 22 may be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application.

The electrode assembly 23 is a component in which electrochemical reactions occur in the battery cell 20. One or more electrode assemblies 23 may be contained within the housing 22. The electrode assembly 23 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet having the active material constitute the main body portion of the electrode assembly, and the portions of the positive electrode sheet and the negative electrode sheet having no active material constitute the tabs, respectively. The positive electrode tab 23a and the negative electrode tab 23b may be located at one end of the main body portion together or at both ends of the main body portion. During charge and discharge of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected with the electrode terminal to form a current loop.

For convenience of description, please refer to fig. 4-8, the mounting base of the present application is described as an example.

The mount 32 includes an output pole connector 321 and a plug 322. Wherein the output electrode connector 321 is used for connecting with the output electrode of the battery 100; the plug 322 is connected to the output pole connector 321, at least a portion of the plug 322 material comprising a deformable material, the portion of the plug 322 comprising the deformable material forming at least a portion of the mating surface for an interference mating with the end plate 31 of the battery 100.

The connection mode of the plug connector 322 and the output pole connector 321 includes, but is not limited to, screw connection, welding or integral injection molding.

Optionally, the output electrode connecting piece 321 and the plug piece 322 are all plastic pieces, so as to achieve a good insulation effect when the output electrode of the battery 100 is fixed.

The deformation material refers to a material capable of deforming under the action of external force. The deformable material may be a plastic material or an elastic material. Plastic material refers to a material that is capable of undergoing plastic deformation under the influence of an external force. The elastic material refers to a material capable of generating elastic deformation under the action of external force.

Interference fit refers to the fact that when two parts are plugged, mutual extrusion force is generated between plugging fit surfaces of the two parts due to interference fit. For example, when the plug connector 322 is plugged into the jack, the area of the cross section of the plug connector 322 inserted into the jack is larger than the area of the cross section of the jack, and the plug connector 322 is deformed by inserting the plug connector 322 into the jack by an external force so as to generate a pressing force on the jack.

Illustratively, one end of the end plate 31 is provided with a plugging hole 31a, the plug connector 322 is a plugging protrusion structure, the plugging protrusion structure is inserted into the plugging hole 31a, and the outer contour area of the cross section of the plugging protrusion structure matched with the plugging hole 31a is larger than the area of the cross section of the plugging hole 31 a. Because the outer contour of the plug 322 has a large area, the plug is difficult to insert when being plugged into the plug hole 31a, and a chamfer can be arranged at the end of the plug 322 at the insertion end, so that the insertion difficulty of the plug 322 can be reduced.

At least part of the material of the plug connector 322 is set to be a forming variable material, when the plug connector 322 is in interference fit with the end plate 31, the plug connector 322 can generate plastic deformation or elastic deformation, so that the plug connector 322 can be more firmly fixed on the end plate 31, the plug connector 322 is made of rigid material or material with higher hardness, even if the plug connector 322 is in interference fit with the end plate 31, when the battery 100 is used in a dynamic occasion, the plug connector 322 is easy to loosen due to the influence of vibration, and the plug connector 322 is difficult to assemble due to higher hardness of the rigid component during assembly. Therefore, setting the deformation material for at least part of the plug connector 322 can not only enable the plug connector 322 to be more firmly fixed on the end plate 31 and reduce the shaking probability of the mounting seat 32 when the battery 100 works, thereby reducing the shaking probability of the output electrode on the output electrode connecting piece 321, enabling the output electrode not to be easily broken when working and improving the reliability of power transmission of the output electrode; meanwhile, in the assembling process, the assembling resistance can be reduced, and the assembling efficiency is improved.

In some embodiments, referring to fig. 5, the plug 322 includes a plug body 3221 and an expansion member 3222, the expansion member 3222 is disposed on an outer surface of the plug body 3221, and a plug face is formed on an outer surface of the expansion member 3222, and the plug face of the expansion member 3222 is configured for interference fit with the end plate 31.

The expansion member 3222 may cover the outer wall of the plug body 3221 completely to form a cylindrical structure, or may cover the outer wall of the plug body 3221 partially.

Alternatively, the expansion element 3222 may be made of a soft material, the plug body 3221 may be made of a hard material, the plug body 3221 provides sufficient strength to support the expansion element 3222, and when the expansion element 3222 is plugged with the end plate 31, the expansion element 3222 is easily extruded and deformed due to the soft material, so that a gap between the plug element 322 and the end plate 31 in a plugging fit can be eliminated in the plugging process.

Optionally, the shape of the plug body 3221 includes, but is not limited to, square, polygonal, or oval.

From this, can reduce the grafting damage of grafting body 3221 to can set up the material that is different with expansion member 3222 and grafting body 3221, like grafting body 3221 can adopt the material that intensity is great in order to satisfy the requirement to expansion member 3222 support, expansion member 3222 can adopt the material that deformation is great, in order to realize the interference grafting cooperation with end plate 31 more easily.

In some embodiments, the hardness of the hugger 3222 is less than the hardness of the plug body 3221.

Hardness refers to the ability of a material to locally resist the pressing of hard objects into its surface.

For example, the hugger 3222 may be a rubber layer or a soft plastic. The plug body 3221 may be of a rigid plastic.

Thus, the expansion element 3222 is more easily compressed and deformed when in plug-in engagement with the end plate 31, so that the plug element 322 can be more easily inserted into the end plate 31 in an interference-in manner.

In some embodiments, referring to fig. 5 and 7, the hugger 3222 is a cylindrical structure.

Alternatively, the tubular structure formed by the expansion 3222 may be substantially identical to the outer wall profile of the plug body 3221.

Thus, the expansion members 3222 can be inserted into the end plates 31 at the same time, and the expansion members 3222 can be inserted into the end plates 31 more firmly when the expansion members 3222 are made of a material (elastic deformation or plastic deformation) which is easier to deform.

In some embodiments, referring to fig. 5, the outer wall of the expansion element 3222 is formed with a plugging protrusion 3222a extending along the plugging direction B of the plugging element 322.

Alternatively, the insertion protrusion 3222a may be a strip-shaped rib structure. Exemplary, the expanding member 3222 may be a square tube structure, each outer wall of the square tube structure is provided with a strip-shaped convex rib structure, one end of the end plate 31 is provided with a plugging hole 31a, the plugging hole 31a is a square hole, the expanding member 3222 is plugged in the square hole, the strip-shaped convex rib structure abuts against the side wall of the square hole, and a pressing force is provided between the strip-shaped convex rib structure and the side wall of the square hole. In other examples, the cylindrical structure may be specifically set according to the shape of the insertion hole 31a, and the shape of the insertion hole 31a may be reasonably set according to needs, such as square, oval, polygonal, circular, and the like.

The number of the insertion protrusions 3222a may be specifically set according to the shapes of the expansion piece 3222 and the insertion holes 31a of the end plate 31. For example, the expansion member 3222 may be a square tubular structure, and at least two adjacent outer walls of the square tubular structure are provided with insertion protrusions 3222a to define positions of the square tubular structure in two directions after insertion. When the insertion hole 31a is a circular hole, the expansion member 3222 may be a cylindrical structure, and at least three insertion protrusions 3222a are disposed at axial intervals of an outer wall of the cylindrical structure to define a radial position of the cylindrical structure.

The outer wall of the expansion piece 3222 refers to a side wall surface opposite to the inner wall of the insertion hole 31a of the end plate 31.

By utilizing the compression deformation generated by the inserting protrusion 3222a to be in inserting fit with the inserting hole 31a of the end plate 31, larger interference can be generated, so that the inserting piece 322 can be inserted with the end plate 31 more firmly.

In some embodiments, the plug body 3221 is integrally formed with the hugger 3222.

The plug body 3221 and the expansion member 3222 are integrally formed in a manner including, but not limited to, injection molding or welding.

In the process of plugging the plug connector 322, the plug body 3221 and the expansion piece 3222 generate relative friction force, the plug body 3221 and the expansion piece 3222 are set into an integral molding, and the connection firmness of the plug body 3221 and the expansion piece 3222 can be improved, so that the separation probability of the plug body 3221 and the expansion piece 3222 is reduced.

In some embodiments, referring to fig. 4, the output pole connecting piece 321 includes a base 3211 and a cover body 3212, the base 3211 is connected to the plug connector 322, the base 3211 has a groove 3211a for accommodating the output pole, the cover body 3212 is covered at a notch position of the groove 3211a, one end of the cover body 3212 is rotatably connected to the base 3211, and the other end of the cover body 3212 is connected to the base 3211 in an openable and closable manner.

Optionally, the bottom of groove 3211a is connected to plug 322.

The openable connection of the other end of the cover body 3212 and the base 3211 means that the other end of the cover body 3212 and the base 3211 can be opened and closed. For example, the openable connection of the other end of the cover 3212 to the base 3211 includes, but is not limited to, a snap fit, a bolt connection, a screw connection, a lock connection, or the like.

One end of the cover body 3212 may be rotatably connected to the base 3211 by a hinge, or may be rotatably connected by a material having bending capability (which is not easily broken after bending, such as a plastic material or an elastic material).

Thus, the cover 3212 can be more firmly covered on the base 3211 during operation of the battery 100, so that the output electrode can be fixed by the output electrode connector 321, thereby protecting the output electrode.

In some embodiments, referring to fig. 4, the cover 3212 is connected to the base 3211 by a connecting portion 3213, and the connecting portion 3213 is configured to be capable of bending and deforming, so that the cover 3212 can rotate relative to the base 3211.

Optionally, the middle thickness of the connecting portion 3213 is greater than the thicknesses of the two ends of the connecting portion 3213, so that the connecting portion 3213 can be more easily bent.

Optionally, the two side surfaces of the connecting portion 3213 along the thickness direction of the connecting portion 3213 are concave cambered surfaces, and the thickness from two ends of the connecting portion 3213 to the middle position is gradually reduced, so that stress abrupt change of the connecting portion 3213 in the bending process can be reduced, local fracture of the connecting portion 3213 caused by stress concentration of the connecting portion 3213 is reduced, and the service life of the connecting portion 3213 is prolonged.

The rotatable connection between one end of the cover 3212 and the base 3211 is achieved by bending deformation of the connecting portion 3213, and the structure of the mount 32 can be simplified as compared with the rotatable connection achieved by a hinge structure.

In some embodiments, referring to fig. 4, the material of the connecting portion 3213 is a plastic insulating material or an elastic insulating material.

Plastic insulating material refers to an insulating material capable of plastic deformation when subjected to an external force, such as nylon or polytetrafluoroethylene.

The elastic insulating material refers to an insulating material capable of being elastically deformed when subjected to an external force, such as rubber, silica gel, polyurethane, or the like.

Thus, the cover 3212 can be opened or closed from the base 3211 by plastic deformation or elastic deformation of the connecting portion 3213.

In some embodiments, referring to fig. 4, the hardness of the cover 3212 and the hardness of the base 3211 are both greater than the hardness of the connecting portion 3213.

The hardness of the cover body 3212 and the base 3211 is greater than that of the connecting portion 3213, so that the cover body 3212 and the base 3211 have certain strength, the hardness of the connecting portion 3213 is smaller than that of the cover body 3212 and the base 3211, and the connecting portion 3213 can be bent more easily, so that the cover body 3212 and the base 3211 are connected in a rotating manner.

In some embodiments, referring to fig. 4, the cover 3212 and the base 3211 are made of insulating materials.

Optionally, the materials of the cover body 3212 and the base 3211 are plastic, and may be formed by injection molding according to the shapes of the cover body 3212 and the base 3211.

Thus, the output electrode can be insulated and protected.

In some embodiments, referring to fig. 4, the cover 3212, the connecting portion 3213 and the base 3211 are integrally constructed.

Alternatively, the cover 3212, the connecting portion 3213 and the base 3211 may be formed as an integral structure by welding or injection molding.

Compared with the structure that both ends of the cover body 3212 are clamped with the base 3211, the reliability of connection between the cover body 3212 and the base 3211 can be improved, so that reliable protection and fixation of the output electrode in the working process of the battery 100 can be ensured.

For convenience of description, referring to fig. 7 and 8, the end plate assembly 30 of the present application is described as an example.

The end plate assembly 30 includes an end plate 31 and the mount 32 of the above-described embodiment. Wherein, an insertion hole 31a is formed at one end of the end plate 31, and the insertion piece 322 is in interference insertion fit with the insertion hole 31 a.

Illustratively, the insertion hole 31a at one end of the end plate 31 may be a tapered hole, and the insertion piece 322 may be a tapered structure, and the tapered structure and the tapered hole may form an interference insertion fit.

Optionally, the inner surface of the plugging hole 31a is formed with a first wall and a second wall adjacent to the first wall, the first wall is connected with the second wall and defines the plugging hole 31a, the plug 322 abuts against the first wall and the second wall of the plugging hole 31a, and the plug 322 applies a pressing force on the first wall and the second wall. Further alternatively, the expansion member 3222 is provided with a plurality of insertion protrusions 3222a, a portion of the plurality of insertion protrusions 3222a abutting the first wall and a portion of the plurality of insertion protrusions 3222a abutting the second wall, the insertion protrusions 3222a generating opposing forces with the first wall and the second wall to create an interference insertion fit.

The plug hole 31a and the plug piece 322 are in interference plug fit, so that the plug piece 322 of the mounting seat 32 is firmly fixed on the end plate 31, the shaking probability of the mounting seat 32 relative to the end plate 31 can be reduced, the output electrode can be well fixed, and the output electrode can stably and continuously output current.

The following examples are given for convenience of explanation, taking the battery 100 of the present application as an example.

Referring to fig. 2 and 8, the battery pack includes an output electrode, the end plate assembly 30 of the above embodiment, and at least one battery cell 20. The output electrode is connected with the battery unit 20, and the output electrode is disposed on the output electrode connecting piece 321.

The number of battery cells 20 may be specifically set to one or more according to the capacity of the battery 100.

Alternatively, the battery 100 may include a bus bar, the number of the battery cells 20 may be plural, the plurality of battery cells 20 are arranged along the first direction a, the tabs of the plurality of battery cells 20 are electrically connected to the bus bar, and the bus bar is electrically connected to the output electrode.

The battery monomer 20 can output current through the output electrode of the end plate assembly 30, the output electrode is fixed through the mounting seat 32 of the end plate assembly 30, the mounting seat 32 is in interference fit connection with the insertion hole 31a of the end plate 31, and especially, the battery monomer is applied to dynamic working conditions, such as shaking probability of the mounting seat 32 relative to the end plate 31 in the running process of an electric vehicle can be reduced, one end of the cover body 3212 is rotatably connected with the base 3211, the other end of the cover body 3212 is connected with the base 3211 in an openable manner, the output electrode can be firmly fixed, shaking probability of the output electrode is reduced, and the output electrode is well protected.

For convenience of description, referring to fig. 4-8, the mounting base 32 of the present application is described as an example.

The mount 32 includes an output pole connector 321 and a plug 322. Wherein the output electrode connector 321 is used for connecting with the output electrode of the battery 100; the plug 322 is connected to the output pole connector 321, at least a portion of the plug 322 material comprising a deformable material, the portion of the plug 322 comprising the deformable material forming at least a portion of the mating surface for an interference mating with the end plate 31 of the battery 100. The plug 322 includes a plug body 3221 and an expansion member 3222, the outer surface of the plug body 3221 is provided with the expansion member 3222, the outer surface of the expansion member 3222 is formed with a plug face, and the plug face of the expansion member 3222 is used for interference plug fit with the end plate 31. The hardness of the expansion piece 3222 is smaller than that of the plugging body 3221, the expansion piece 3222 is a plastic layer or an elastic layer, and the expansion piece 3222 is of a cylindrical structure. The outer wall of the expansion piece 3222 is formed with a fitting protrusion 3222a extending in the fitting direction B of the fitting piece 322. The plug body 3221 and the expansion member 3222 are integrally formed.

The output pole connecting piece 321 comprises a base 3211 and a cover body 3212, the base 3211 is connected with the plug-in piece 322, the base 3211 is provided with a groove 3211a for accommodating the output pole, the cover body 3212 is arranged at the notch position of the groove 3211a in a covering mode, one end of the cover body 3212 is rotatably connected with the base 3211, and the other end of the cover body 3212 is connected with the base 3211 in an openable mode. The cover 3212 and the base 3211 are connected by a connecting portion 3213, and the connecting portion 3213 is configured to be bendable and deformable so that the cover 3212 can rotate relative to the base 3211. The material of the connection portion 3213 is a plastic insulating material or an elastic insulating material. The hardness of the cover 3212 and the hardness of the base 3211 are both greater than the hardness of the connecting portion 3213. The cover 3212 and the base 3211 are made of insulating materials. The cover 3212, the connecting portion 3213, and the base 3211 are integrally constructed.

By the interference plug-in fit of the plug-in connector 322 and the end plate 31, compared with a plug-in structure of the plug-in connector 322 and the end plate 31 adopting clearance fit, the shaking probability of the mounting seat 32 during the operation of the battery 100 can be reduced, so that the shaking probability of the output electrode on the output electrode connecting piece 321 can be reduced, the output electrode is not easy to form open circuit during the operation, and the reliability of the power transmission of the output electrode is improved; meanwhile, the mounting seat 32 is in interference fit in the plugging hole 31a of the end plate 31, especially under dynamic working conditions, such as in the running process of an electric vehicle, the shaking probability of the mounting seat 32 relative to the end plate 31 can be reduced, one end of the cover body 3212 is rotatably connected with the base 3211, the other end of the cover body 3212 is connected with the base 3211 in an openable manner, the output electrode can be firmly fixed, the shaking probability of the output electrode is reduced, and the output electrode is well insulated and protected.

The foregoing description of various embodiments is intended to highlight differences between the various embodiments, which may be the same or similar to each other by reference, and is not repeated herein for the sake of brevity.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A mounting block, comprising:

The output electrode connecting piece is used for being connected with the output electrode of the battery;

the plug connector is connected with the output pole connecting piece, at least part of the plug connector comprises a deformation material, at least one part of plug connector is formed by the deformation material, at least one part of plug connector is used for being in interference fit with the end plate of the battery, the plug connector comprises a plug connector body and a tension connector, the outer surface of the plug connector body is provided with the tension connector, the outer surface of the tension connector is provided with the plug connector, at least one part of plug connector is used for being in interference fit with the plug hole of the end plate of the battery, the outer wall of the tension connector is provided with plug protrusions extending along the plug connection direction of the plug connector, the plug protrusions are of strip-shaped convex rib structures, the number of the plug protrusions is multiple, the plug protrusions are arranged along the periphery of the tension connector at intervals, the surface of one side of the plug connector faces the plug hole is abutted against the plug hole, and the outer surface of the tension connector, the inner surface of the plug hole and two adjacent plug protrusions jointly limit a plug gap.

2. The mount of claim 1, wherein the expansion member has a hardness less than a hardness of the plug body.

3. The mount of claim 1, wherein the tension member is a tubular structure.

4. The mount of claim 1, wherein the plug body is integrally formed with the expansion member.

5. The mount according to any one of claims 1 to 4, wherein the output pole connector includes a base and a cover, the base is connected to the plug connector, the base has a recess for accommodating the output pole, the cover is provided at a notch position of the recess, one end of the cover is rotatably connected to the base, and the other end of the cover is openably and closably connected to the base.

6. The mount of claim 5, wherein the output pole connector further comprises a connection portion through which the cover is connected to the base, the connection portion being configured to be capable of bending deformation to enable the cover to rotate relative to the base.

7. The mounting base according to claim 6, wherein the material of the connecting portion is a plastic insulating material or an elastic insulating material; and/or the hardness of the cover body and the hardness of the base are both greater than the hardness of the connecting part.

8. The mount of claim 7, wherein the cover portion and the base are of an insulating material.

9. The mount of claim 6, wherein the cover, the connection portion, and the base are of unitary construction.

10. An endplate assembly comprising:

an end plate, wherein a plug hole is formed at one end of the end plate;

the mount according to any one of claims 1-9, the plug being an interference plug fit with the plug aperture.

11. A battery, comprising:

At least one battery cell;

The output electrode is electrically connected with the battery monomer;

the endplate assembly of claim 10, the output pole being disposed in the output pole connector.

12. An electrical device comprising the battery of claim 11 for providing electrical energy to the electrical device.