CN216015615U - Adapter part, single battery, power consumption device and single battery manufacturing equipment - Google Patents

Abstract

The application provides a switching part, a battery monomer, a battery, a power consumption device and a manufacturing device of the battery monomer. The adapter component is made of a conductive material and comprises a first adapter sheet and a second adapter sheet which are arranged in a split mode, the first adapter sheet is used for being connected with one of the pole or the pole lug, the second adapter sheet is used for being connected with the other of the pole or the pole lug, the first adapter sheet extends along a first direction on the whole, the second adapter sheet extends along a second direction on the whole, the first direction and the second direction are crossed, and the first adapter sheet and the second adapter sheet are connected through a conductive structure. This application sets up the switching part into the first switching piece and the second switching piece of components of a whole that can function independently, when the assembly, can be connected first switching piece and utmost point post in advance like this to being connected the back with the utmost point ear of second switching piece and electrode subassembly, putting into the casing with electrode subassembly, passing through conductive structure with the tip of first switching piece and second switching piece again this moment and connecting, and then realize electrode subassembly's income shell.

Description

Adapter part, single battery, power consumption device and single battery manufacturing equipment

Technical Field

The application relates to the technical field of batteries, in particular to a switching component, a single battery, a battery, an electric device and single battery manufacturing equipment.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

The battery monomer comprises a shell, an end cover and an electrode assembly arranged in the shell, wherein the end cover is provided with a pole. In the assembly process of the single battery, the electrode assembly needs to be placed in the housing, the electrode assembly needs to be connected with the pole on the end cover, and the end cover and the housing need to be welded to complete the assembly.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides an adaptor member, a battery cell, a battery, an electric device, and a manufacturing apparatus of the battery cell, so as to simplify the assembly of the battery cell.

In a first aspect, the present application provides an adapter component for a battery cell, the adapter component is made of an electrically conductive material and includes a first adapter sheet and a second adapter sheet, the first adapter sheet and the second adapter sheet are separately disposed, the first adapter sheet is used for being connected with one of a terminal or a tab, the second adapter sheet is used for being connected with the other of the terminal or the tab, the first adapter sheet generally extends along a first direction, the second adapter sheet generally extends along a second direction, the first direction and the second direction intersect, and the first adapter sheet and the second adapter sheet are connected through an electrically conductive structure.

In the technical scheme of this application embodiment, set up the switching part into the first switching piece and the second switching piece of components of a whole that can function independently, when assembling like this, can be connected first switching piece and utmost point post in advance to after being connected second switching piece and electrode assembly's utmost point ear, put electrode assembly into the casing, pass through conductive structure with the tip of first switching piece and second switching piece again this moment and connect, and then realize electrode assembly's income shell.

In some embodiments, the first switching piece comprises a first body segment for connecting one of a pole or a tab and a first connection segment disposed at an end of the first body segment; the first main body section extends along a first direction, the first connecting section extends along a second direction, and the first connecting section is connected with the second adapter sheet. The arrangement of the first connecting section can increase the connecting area between the first adapter plate and the second adapter plate, and the connection is convenient.

In some embodiments, the second interposer includes a second main body section for connecting the other of the pole or the tab, and a second connection section connected to the first connection section, wherein the first connection section extends toward a side close to the second main body section relative to the first main body section; or the first connecting section extends towards the side far away from the second main body section relative to the first main body section; alternatively, in the second direction, the first connecting section extends towards both sides with respect to the first main body section.

In some embodiments, the first connection section and the first body section are integrally formed.

The conductive structure comprises a welding structure, a conductive adhesive bonding structure, a riveting structure or a conductive element.

In a second aspect, the application provides a battery cell, which includes a housing, a terminal, an electrode assembly and the above-mentioned adapter component, where the housing has a receiving cavity, the electrode assembly is received in the receiving cavity, the housing includes a casing and an end cover, the casing is integrally formed, the casing includes two first side walls oppositely arranged in a second direction and two second side walls oppositely arranged in a third direction, the two first side walls and the two second side walls surround to form the receiving cavity, the casing is at least provided with an opening in the first direction, the second direction and the third direction are mutually perpendicular, the electrode assembly includes a main body part and a tab extending out from the main body part to one side of the opening, the terminal is arranged on the first side wall, and the end cover is arranged at the opening to close the receiving cavity; the first switching piece is connected with the pole, and the second switching piece is connected with the pole lug.

In some embodiments, the number of the poles is two, and the two poles are respectively disposed on the two first side walls.

In some embodiments, the tabs include a positive tab and a negative tab, the positive tab and the negative tab being disposed on the same side of the body portion.

In some embodiments, the post is riveted or injection molded onto the first sidewall.

In a third aspect, the present application provides a battery including the above battery cell.

In a fourth aspect, the present application provides an electric device comprising the above battery.

In a fifth aspect, the present application provides a battery cell manufacturing apparatus, comprising:

the first providing module is configured to provide an integrally formed shell, a pole and an end cover, wherein the shell comprises two first side walls arranged oppositely in a second direction and two second side walls arranged oppositely in a third direction, the two first side walls and the two second side walls surround to form a containing cavity, and the shell is provided with at least one opening in the first direction;

a second providing module configured to provide an electrode assembly including a main body portion and tabs outwardly protruding from the main body portion;

the third providing module is configured to provide an adapter component, and the adapter component comprises a first adapter sheet and a second adapter sheet which are separately arranged; and

and the assembly module is configured to install the pole column on the first side wall, connect the first switching sheet with the pole column, connect the second switching sheet with the pole ear, place the electrode assembly in the accommodating cavity, electrically connect the first switching sheet and the second switching sheet, and arrange the end cover at the opening to close the accommodating cavity.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the lower wall will briefly introduce the drawings required to be used in the embodiments of the present application, and obviously, the drawings described in the lower wall are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

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

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

fig. 4 is a schematic perspective view of a housing of a battery cell according to some embodiments of the present application;

fig. 5 is a schematic top view of a battery cell according to some embodiments of the present application;

fig. 6 is a schematic sectional view of the battery cell shown in fig. 5 along the a-a direction;

FIG. 7 is a partial enlarged view of the portion M in FIG. 6;

FIG. 8 is a partial enlarged view of the portion N in FIG. 6;

FIG. 9 is a perspective view of an interposer component according to some embodiments of the present application;

FIG. 10 is a front view of the adapter assembly of FIG. 9;

fig. 11 is a schematic diagram of steps of a method of manufacturing a battery cell according to some embodiments of the present application;

fig. 12 is a block diagram of a manufacturing apparatus of a battery cell according to some embodiments of the present application.

In the drawings, the drawings are not necessarily to scale.

Description of the labeling:

a vehicle 1000;

battery 100, controller 200, motor 300;

a box 10, a first part 11, a second part 12;

the battery cell 20, the case 21, the first sidewall 211, the pole mounting hole 211a, the second sidewall 212, the opening 213, the electrode assembly 22, the body portion 221, the tab 222, the pole 23, the internal pole 231; an outer pole 232; an insulating sleeve 233; a seal ring 234; a first insulating sheet 235; a second insulating sheet 236; the end cap 24, the adapter member 26, the first adapter plate 261, the first body section 2611, the first connection section 2612, the second adapter plate 262, the second body section 2621, the second connection section 2622;

the manufacturing device of the battery cell 30, the first providing module 31, the second providing module 32, the third providing module 33, and the assembling module 34.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

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

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Current battery cells generally include a case, an end cap, and an electrode assembly accommodated in the case, and an electrolyte is filled in the case. The electrode assembly is a part in which electrochemical reactions occur in the battery cell, the case is an assembly forming the internal environment of the battery cell, and the end cap is a part covering the opening of the case to insulate the internal environment of the battery cell from the external environment. In some existing battery cells, positive and negative poles are generally arranged on the same end cover, and the arrangement direction of the poles is the same as the extending direction of the pole lugs of the electrode assembly. The design ensures that the positive and negative connection modes between the battery monomers can be connected only at the same side. In order to solve the problem, the casing of other existing battery cells has two openings oppositely arranged in the length direction and end covers respectively arranged on the two openings, and positive and negative poles are respectively arranged on the two end covers. The inventor of the present application has found that during the assembly of these battery cells, the electrode assembly needs to enter the case from one opening and move to another opening, so that the movement stroke of the electrode assembly when entering the case is longer. Before the electrode assembly is placed into the shell, the electrode lugs of the electrode assembly are connected with the electrode posts on one end cover, and then the electrode assembly is placed into the shell, and then the end cover and the shell can be welded, so that the assembly process is complex and the difficulty is high.

In order to solve the problem of complex assembly of the battery cell, the inventor researches and discovers that the battery cell can comprise an integrally formed shell, and two poles are integrally assembled on two opposite side walls of the shell, so that an electrode assembly does not need to be connected with an end cover in advance when being placed in the shell, the shell is convenient to place, and the assembly process of the battery cell is simplified.

The battery cell disclosed in the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but not limited thereto. A power supply system including the electric device composed of the battery cell, the battery, and the like disclosed in the present application may be used.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside 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 serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for power demand for operation when the vehicle 1000 is started, navigated, or driven.

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

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10 and a battery cell 20. The battery cell 20 is accommodated in the case 10. The case 10 is used to provide a receiving space for the battery cells 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery cell 20. The second part 12 may be a hollow structure having one open end, the first part 11 may be a plate-shaped structure, and the first part 11 is covered on the open side of the second part 12 such that the first part 11 and the second part 12 together define a receiving space. The first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In the battery 100, the number of the battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 20. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells 20 is accommodated in the box body 10; of course, the battery 100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

Referring to fig. 3, fig. 3 is a schematic perspective view of a battery cell 20 according to some embodiments of the present disclosure. As shown in fig. 3 and with reference to fig. 5, the battery cell 20 includes a case 21, an electrode assembly 22, a terminal post 23, and other functional components.

The case 21 is an assembly forming an internal environment of the battery cell 20, wherein the formed internal environment may be used to house the electrode assembly 22, an electrolyte, and other components. The housing 21 may be of various shapes and various sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism shape, and the like. Specifically, the shape of the case 21 may be determined according to the specific shape and size of the electrode assembly 22. The material of the housing 21 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment.

The electrode assembly 22 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 22 may be contained within the case 21. The electrode assembly 22 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally disposed between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode tabs having the active material constitute the body portion 221 of the electrode assembly, and the portions of the positive and negative electrode tabs having no active material each constitute a tab 222. During the charge and discharge of the battery, the positive and negative active materials react with the electrolyte, and the electrode post 23 is used to be electrically connected to the electrode assembly 22 for outputting or inputting electric energy of the battery cell 20.

The end cap 24 refers to a member that covers an opening of the case 21 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 24 may be adapted to the shape of the housing 21 to fit the housing 21. Alternatively, the end cap 24 may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the end cap 24 is not easily deformed when being extruded and collided, and the single battery 20 may have a higher structural strength and an improved safety performance. In some embodiments, the end cap 24 may further include a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value, and the end cap 24 may also be made of various materials, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, and the like, which is not limited in this embodiment.

Referring to fig. 3 to 6, fig. 3 illustrates a perspective view of a battery cell according to some embodiments of the present application, and fig. 4 illustrates a perspective view of a housing of the battery cell according to some embodiments of the present application. Fig. 5 illustrates a schematic top view of a battery cell according to some embodiments of the present application. Fig. 6 shows a schematic sectional structure of the battery cell of fig. 5 along the a-a direction. The battery cell 20 includes a case 21, an electrode assembly 22, and two poles 23. The housing 21 is integrally formed and includes at least one opening in the first direction Z, two first sidewalls 211 oppositely disposed in the second direction X, and two second sidewalls 212 oppositely disposed in the third direction Y, and the two first sidewalls 211 and the two second sidewalls 212 enclose to form an accommodating cavity. The first direction Z, the second direction X and the third direction Y are perpendicular to each other. The electrode assembly 22 is received in the receiving cavity, and the electrode assembly 22 includes a body portion 221 and two tabs 222 of opposite polarities protruding outward from the body portion 221. The two poles 23 are respectively disposed on the two first sidewalls 211 and are respectively electrically connected with the two tabs 222.

As shown in fig. 3, the first direction Z is a height direction of the battery cell 20, the second direction X is a length direction of the battery cell 20, and the third direction Y is a thickness direction of the battery cell 20. The first sidewall 211 is disposed in the second direction X, which means that the first sidewall 211 is in the extending direction of the second direction X and the first sidewall 211 is perpendicular to the second direction X. Likewise, the second sidewall 212 is disposed in the third direction Y means that the second sidewall 212 is in an extending direction of the third direction Y and the second sidewall 212 is perpendicular to the third direction Y. The opening 213 in the first direction Z means that at least one face of the housing 21 in the first direction Z is openly provided.

As shown in fig. 4, the first side wall 211 of the housing 21 is provided with a pole mounting hole 211a, and the pole 23 is mounted at the pole mounting hole 211 a. As shown in fig. 5 and 6, both tabs 222 of the electrode assembly 22 protrude from the same side of the body portion 221. In other embodiments, the two tabs 222 of the electrode assembly 22 may also respectively extend from different sides of the main body 221, for example, referring to fig. 6, the two tabs 222 may respectively extend from the left and right ends of the main body 221, which may also facilitate the connection between the tabs 222 and the electrode post 23, for example, the connection between the electrode post 23 and the tabs 222 may be achieved by penetration welding or the like.

The two poles 23 are respectively disposed on the two first side walls 211 of the integrally formed housing 21, so that when the electrode assembly 22 is inserted into the housing, the stroke of movement required by the electrode assembly is in the width direction of the housing 21, and the stroke is shortened, thereby facilitating the insertion into the housing. And two polar columns are integrally assembled on two opposite side walls of the shell, so that the electrode assembly does not need to be connected with the end cover in advance when entering the shell, the shell entering is convenient, and the assembly process of the battery monomer is simplified. In addition, two utmost point posts of battery monomer 20 set up on two first lateral walls 211, make battery monomer 20's upper and lower both sides all can arrange the water-cooling piece like this, enlarged the area that the water-cooling piece was arranged, improve the heat dispersion of battery.

In some embodiments, the housing 21 is integrally formed by an aluminum extrusion or drawing process.

According to some embodiments of the present application, the housing 21 further includes a bottom wall disposed opposite the opening 213. The battery cell 20 further includes an end cap 24, the end cap 24 being disposed at the opening 213 to close the receiving cavity.

As shown in fig. 4, the area of the first sidewall 211 is smaller than that of the second sidewall 212, so that the housing 21 includes five faces, two large faces (second sidewall 212), two small faces (first sidewall 211), and a bottom face. The pole 23 is directly fitted on two facets of the housing 21, i.e., the first side wall 211. Thus, after the electrode assembly 22 is placed in the case 21, only one end cap 24 needs to be welded to the case 21 to close the case 21, which simplifies the assembly process of the battery cell compared to the prior art in which two end caps need to be welded.

According to some embodiments of the present application, the housing 21 has two openings 213 oppositely arranged in the first direction Z, and the battery cell 20 further includes two end caps 24, and the two end caps 24 are correspondingly arranged at the two openings 213 to close the accommodating cavity.

In this case, the housing 21 has four surfaces, two large surfaces and two small surfaces, which are vertically penetrated in the first direction Z and have two openings respectively located in the first direction Z. Since the housing 21 is penetrated in the first direction Z, the stretch-forming can be performed at one time, and the stretch-forming process is simple.

According to some embodiments of the present application, the area of the first sidewall 211 is smaller than the area of the second sidewall 212. The arrangement is such that the second sidewall 212 of the case 21 is disposed in the same direction as the major surface of the electrode assembly 22, and the first sidewall 211 of the case 21 is disposed in the same direction as the thickness direction of the electrode assembly 22, thereby facilitating the housing of the electrode assembly 22.

According to some embodiments of the present application, the pole 23 is riveted or injection molded on the first sidewall 211. As shown in fig. 4, the first side walls 211 are provided with pole mounting holes 211a, and the poles 23 are directly fitted into the pole mounting holes 211a of the two first side walls 211 by riveting or injection molding before the electrode assembly 23 is housed.

Referring to fig. 8, the pole post 23 includes an inner pole post 231, an outer pole post 232, a sealing sleeve 233, a sealing ring 234, a first insulating sheet 235, and a second insulating sheet 236. The inner pole 231 penetrates through the pole mounting hole 211a of the first side wall 211 and is partially exposed out of the first side wall 211, and the outer pole 232 is sleeved on the outer side of the inner pole 231. The sealing sleeve 233 is sleeved outside the internal pole 231 to isolate the first sidewall 211 from the internal pole 231. The sealing ring 234 is pressed against the outer wall of the sealing sleeve 233 so that the inner wall of the sealing sleeve 233 is in contact with the outer wall of the internal post 231, which is shown in a state where they are not in contact during assembly, but the inner wall of the sealing sleeve 233 and the outer wall of the internal post 231 are in contact with each other after assembly is completed. In order to avoid an electrically conductive connection of the pole post 23 to the housing 21, a first insulating sheet 235 is provided between the pole post 231 and the inner wall surface of the first side wall 211 of the housing 21. And both sides of the inner pole 231 are provided with first insulating sheets 235. A second insulation sheet 236 is provided between the outer pole 232 and the outer wall surface of the first side wall 211 of the housing 21. The second insulating sheet 236 has a groove for clamping the outer pole 232.

The sealing ring 234 may be made of fluororubber.

As shown in fig. 6, two tabs 222 extend from the body 221 toward the opening 213. The pole 23 is disposed on the first sidewall 221 of the housing 21, that is, the protruding directions of the tab 222 and the pole 23 are not consistent, so that the tab 222 and the pole 23 need to be connected through the adaptor member 26. The inventors have found that, in the course of their studies, the assembly of the battery cell 20 cannot be achieved if the tab 222 and the pole 23 are connected by the integrated adaptor member 26. For example, the adaptor member 26 is first connected to the tab 222, and then the electrode assembly 22 with the adaptor member 26 attached thereto is placed in the case 21, and there is no extra space for welding the adaptor member 26 and the electrode post 23. For example, the adapter part 26 is welded to the pole 23, so that the adapter part 26 blocks the electrode assembly 22 from entering the case, and the electrode assembly 22 cannot enter the case.

In view of this problem, the inventors of the present application propose to provide the adapter member 26 as the first adapter piece 261 and the second adapter piece 262 which are provided separately. The first adaptor sheet 261 is used for being connected with one of the pole column or the pole lug, the second adaptor sheet 262 is used for being connected with the other of the pole column 23 or the pole lug 222, the first adaptor sheet 261 extends along a first direction Z in general, the second adaptor sheet 262 extends along a second direction X in general, the first direction Z and the second direction X are intersected, and the first adaptor sheet 261 and the second adaptor sheet 262 are connected through a conductive structure.

As shown in fig. 6, two tabs 222 extend from the body 221 toward the opening 213. The battery cell 20 also includes an adapter member 26. The adapter member 26 includes a first adapter piece 261 and a second adapter piece 262 which are separately provided. The first adapter piece 261 is used for connecting to the pole 23, and the second adapter piece 262 is used for connecting to the pole tab 222. The first interposer 261 extends substantially along the first direction Z, the second interposer 262 extends substantially along the second direction X, and the first interposer 261 and the second interposer 262 are connected by a conductive structure. And the adapter member 26 is made of an electrically conductive material to achieve an electrically conductive connection between the pole 23 and the tab 222.

The conductive material may be selected from at least one of a conductive carbon-based material, a conductive metal material, and a conductive polymer material, wherein the conductive carbon-based material is selected from at least one of conductive carbon black, acetylene black, graphite, graphene, carbon nanotubes, and carbon nanofibers; the conductive metal material is selected from at least one of Al powder, Ni powder and gold powder; the conductive polymer material is selected from at least one of conductive polythiophene, conductive polypyrrole and conductive polyaniline. The conductive material may be used singly or in combination of two or more.

The adapter member 26 is provided as a first adapter sheet 261 and a second adapter sheet 262 which are separately arranged, so that when assembling, the first adapter sheet 261 can be connected with the pole 23 in advance, after the second adapter sheet 262 is connected with the pole tab 222 of the electrode assembly 22, the electrode assembly 22 is put into the casing 21, and at this time, the ends of the first adapter sheet 261 and the second adapter sheet 262 are connected through a conductive structure, thereby realizing the case entering of the electrode assembly 22. After the ends of the first and second tabs 261 and 262 are connected by the conductive structure, the end cap 24 is welded to the housing 21 to complete the sealing of the battery cell 20.

In other embodiments, the first adapter sheet 261 can also be connected to a tab, while the second adapter sheet 262 is connected to a pole.

In some embodiments, the extending direction of the first interposer 261 and the extending direction of the second interposer 262 are perpendicular to each other. In other embodiments, the extending direction of the first adaptor sheet 261 and the extending direction of the second adaptor sheet 262 intersect with an included angle therebetween.

According to some embodiments of the application, the conductive structure comprises a soldered structure or a conductive glue bonded structure or a riveted structure or a conductive element. The conductive connection by the welding structure means that the first interposer 261 and the second interposer 261 are connected by welding means such as laser welding. The conductive connection through the conductive adhesive bonding structure means that the first interposer 261 and the second interposer 262 are bonded by using a conductive adhesive, which may be a conductive adhesive film, and the conductive adhesive not only can realize the electrical connection between the first interposer 261 and the second interposer 262, but also can realize the mechanical connection therebetween. The conductive connection by the rivet structure means that the first interposer 261 and the second interposer 262 are connected to each other by the rivet.

According to some embodiments of the present application, as shown in fig. 9, the first rotation tab 261 includes a first body section 2611 and a first connection section 2612 disposed at an end of the first body section 2611. The first main body section 2611 is used for connecting with the pole 23, the first main body section 2611 extends along the first direction Z, the first connection section 2612 extends along the second direction X, and the first connection section 2612 is connected with the second adapter plate 262.

The first rotation piece 261 includes a first main body section 2611 and a first connection section 2612 disposed at an end of the first main body section 2611, and the first connection section 2612 is used for connecting with the second adaptor plate 262, so that the connection area between the first rotation piece 261 and the second adaptor plate 262 is increased, and the connection is convenient.

The first connecting section 2612 is integrally formed with the first body section 2611, and is formed by bending the first connecting section 2612 to one side with respect to the first body section 2611 by a bending tool, for example.

Of course, in other embodiments, the first adapter plate 261 may include only the first main body section 2611, and the first main body section 2611 is directly connected to the second adapter plate 262.

According to some embodiments of the present application, the second adaptor plate 262 includes a second body section 2621 and a second connection section 2622 connected to the first connection section 2612, the second body section 2621 is used for connecting the pole 23, wherein the first connection section 2612 extends toward a side close to the second body section 2621 relative to the first body section 2611. Alternatively, the first connecting section 2612 extends towards the side away from the second main body section 2621 relative to the first main body section 2611.

In one possible embodiment, the first connecting section 2612 extends toward a side close to the second body section 2621 relative to the first body section 2611. In another possible embodiment, the first connecting section 2612 extends relative to the first body section 2611 toward a side away from the second body section 2621. The first rotation piece 261 in both embodiments has an L-shaped cross-sectional shape, except that the first connection section 2612 is opposite to the direction in which the first body section 2611 extends.

According to some embodiments of the present application, in the second direction X, the first connection section 2612 extends toward both sides with respect to the first body section 2611. At this time, the cross-sectional shape of the first connecting section 2612 and the first rotating plate 261 formed by the first main body section 2611 is T-shaped, so that the connecting area between the first connecting section 2612 and the second rotating plate 262 can be further increased.

In other embodiments, the first rotation piece 261 may only include the first body segment 2611 extending in the first direction Z. The second adaptor plate 262 includes a second main body section 2621 extending in the second direction X and a second connection section 2622 connected with the first adaptor plate 261. The second connecting section 2622 may be disposed in a bent manner relative to the second main body section 2621, for example, the second connecting section 2622 extends along the first direction Z.

According to some embodiments of the present application, there is also provided a battery cell comprising a housing, a terminal post 23, an electrode assembly 22, and the above-described interposer 26. The case has a containing cavity, the electrode assembly 22 is contained in the containing cavity, the case includes a case body 21 and an end cap 24, the case body 21 is integrally formed, the case body 21 includes two first side walls 211 oppositely arranged in the second direction X and two second side walls 212 oppositely arranged in the third direction Y, the two first side walls 211 and the two second side walls 212 enclose to form the containing cavity, the case body 21 is provided with an opening 213 at least in the first direction Z, the second direction X and the third direction Y are mutually perpendicular, the electrode assembly 22 includes a main body part 221 and a tab 222 extending from the main body part 221 to the opening side, the tab 222 extends toward the opening 213 side, the pole 23 is arranged on the first side wall 211, and the end cap 24 is arranged at the opening to close the containing cavity; the first adapter piece 261 is connected to the pole 23, and the second adapter piece 262 is connected to the tab 222.

According to some embodiments of the present application, the battery cell 20 includes two poles 23. The two poles 23 are respectively disposed on the two first sidewalls 211. And the two tabs of the electrode assembly 22 are a positive tab and a negative tab, respectively, which are disposed on the same side of the body portion 221. At this time, the battery cell 20 includes two adapter members 26, and the positive tab and the negative tab are connected to a corresponding one of the poles 23 through one of the adapter members 26.

In other embodiments, the battery cell 20 may also include more than two electrode assemblies, in which case the positive electrode tabs of the more than two electrode assemblies may be connected to a corresponding one of the terminals 23 through an adapter, and the negative electrode tabs of the more than two electrode assemblies may also be connected to a corresponding another one of the terminals 23 through an adapter.

According to some embodiments of the present application, there is also provided a battery including the battery cell of any of the above aspects.

According to some embodiments of the present application, there is also provided an electric device, including the battery of any of the above aspects, and the battery is used for providing electric energy for the electric device.

The powered device may be any of the aforementioned battery-powered devices or systems.

Referring to fig. 11, the present application also provides a method of manufacturing a battery cell, according to some embodiments of the present application, including the steps of:

and S101, providing the integrally formed shell 21, the pole 23 and the end cover 24. The housing 21 has at least one opening 213 in the first direction Z and includes two first sidewalls 211 oppositely disposed in the second direction X and two second sidewalls 212 oppositely disposed in the third direction Y. The two first side walls 211 and the two second side walls 212 enclose to form a containing cavity, and the first direction Z, the second direction X and the third direction Y are perpendicular to each other.

S102, an electrode assembly 22 is provided, the electrode assembly 22 including a body portion 221 and a tab 222 protruding from the body portion 221 toward the opening 213 side.

S103, providing the adapter component 26, where the adapter component 26 includes a first adapter sheet 261 and a second adapter sheet 262 that are separately arranged. And

s104, the pole 23 is disposed on the first sidewall 211, the first adaptor piece 261 is connected to the pole 23, the second adaptor piece 262 is connected to the tab 222, the electrode assembly 22 is placed in the case 21, the first adaptor piece 261 and the second adaptor piece 262 are conductively connected, and the end cap 24 is disposed at the opening to close the receiving cavity.

The method for manufacturing the battery cell arranges the pole 23 on the first side wall 211 of the integrally formed shell 21, so that the electrode assembly does not need to be connected with an end cover in advance when being placed in the shell, the shell is convenient to place, and the assembly process of the battery cell is simplified. The adapter 26 is provided as a first adapter sheet 261 and a second adapter sheet 262 which are separated, so that when assembling, the first adapter sheet 261 can be connected with the pole 23 in advance, after the second adapter sheet 262 is connected with the pole tab 222 of the electrode assembly 22, the electrode assembly 22 is put into the casing 21, and then the ends of the first adapter sheet 261 and the second adapter sheet 262 are connected through a conductive structure, thereby realizing the case insertion of the electrode assembly 22.

It should be noted that other steps may be added between the above steps.

Referring to fig. 12, the present application also provides a manufacturing apparatus 30 of a battery cell including a first providing module 31, a second providing module 32, a third providing module 33, and an assembling module 34, according to some embodiments of the present application.

Wherein the first providing module 31 is configured to provide the integrally formed housing 21, the pole 23 and the end cap 24. The housing 21 has at least one opening 213 in the first direction Z and includes two first sidewalls 211 oppositely disposed in the second direction X and two second sidewalls 212 oppositely disposed in the third direction Y. The two first side walls 211 and the two second side walls 212 enclose to form a containing cavity, and the first direction Z, the second direction X and the third direction Y are perpendicular to each other.

The second providing module 32 is configured to provide the electrode assembly 22, and the electrode assembly 22 includes a body part 221 and tabs 222 protruding outward from the body part 221.

The third providing module 33 is configured to provide the adaptor part 26, and the adaptor part 26 includes a first adaptor piece 261 and a second adaptor piece 262 which are separately provided.

The assembly module 34 is configured to mount the pole 23 on the first side wall 211 and connect the first tab 261 with the pole 23, connect the second tab 262 with the tab 222, and place the electrode assembly 22 in the receiving cavity, and electrically connect the first tab 261 and the second tab 262, and dispose the end cap 24 at the opening to close the receiving cavity.

The manufacturing equipment of the battery monomer arranges the pole 23 on the first side wall 211 of the integrally formed shell 21, so that the electrode assembly does not need to be connected with an end cover in advance when being placed into the shell, the shell is convenient to place, and the assembly process of the battery monomer is simplified.

The structure of the battery cell according to the embodiment of the present application will be described in detail with reference to fig. 3 to 10.

As shown in fig. 3, the battery cell 20 includes a housing 21, an end cap 24, and two poles 23 provided on the housing 21. The battery cell 20 has a height direction extending in the first direction Z, a length direction extending in the second direction X, and a thickness direction extending in the third direction Y.

As shown in fig. 4, the housing 21 includes two oppositely disposed first side walls 211, two oppositely disposed second side walls 212, a bottom wall, and an opening 213 disposed opposite to the bottom wall.

As shown in fig. 5 and 6, the battery cell 20 further includes an electrode assembly 22 disposed in the case 21, and an adaptor member 26 for connecting the electrode assembly 22 and the electrode post 23. The electrode assembly 22 includes a body portion 221 and two tabs 222 protruding from the body portion 221 to an open side. The two tabs 222 are of opposite polarity, one being a positive tab and the other being a negative tab. Each tab 222 is connected to a corresponding pole 23 by means of an adapter part 26.

As shown in fig. 7, the adapter member 26 includes a first adapter piece 261 and a second adapter piece 262 which are separately provided. The first and second adapter pieces 261 and 262 are disposed perpendicular to each other, the first adapter piece 261 is disposed inside the first sidewall 211 of the housing 21 and connected to the pole 23, and the second adapter piece 262 is disposed inside the end cap 24 and connected to the tab 222.

As shown in fig. 8, the pole post 23 includes an inner pole post 231, an outer pole post 232, a sealing sleeve 233, a sealing ring 234, a first insulating sheet 235, and a second insulating sheet 236.

The inner pole 231 includes a pole body disposed in the pole mounting hole 211a and a connecting piece for connection with the first connecting piece 261. The connecting piece is connected to the end of the pole column. The sealing sleeve 233 is sleeved outside the internal pole 231 to isolate the first sidewall 211 from the internal pole 231. The sealing ring 234 is pressed against the outer wall of the sealing sleeve 233 so that the inner wall of the sealing sleeve 233 is in contact with the outer wall of the internal post 231, which is shown in a state where they are not in contact during assembly, but the inner wall of the sealing sleeve 233 and the outer wall of the internal post 231 are in contact with each other after assembly is completed. In order to avoid an electrically conductive connection of the pole 23 to the housing 21, a first insulating sheet 235 is arranged between the connecting sheet of the inner pole 231 and the inner wall surface of the first side wall 211 of the housing 21. The first insulating sheet 235 extends in the first direction Z to a position near the end cap 24. This makes it possible for the first insulating sheet 235 to prevent an electrically conductive connection not only between the inner pole 23 and the housing 21, but also between the first tab 261 and the housing.

As shown in fig. 8, the pole body passes through the pole mounting hole 211a of the first side wall 211 and is partially exposed to the outside of the first side wall 211. The outer pole 232 is a pole ring with an inner bore. The outer pole 232 is sleeved outside the inner pole 231. A second insulation sheet 236 is provided between the outer pole 232 and the outer wall surface of the first side wall 211 of the housing 21. The second insulating sheet 236 has a groove for clamping the outer pole 232.

As shown in fig. 9 and 10, the adapter member 26 includes a first adapter piece 261 and a second adapter piece 262 that are provided separately. The first adapter piece 261 is used for connecting to the pole 23, and the second adapter piece 262 is used for connecting to the pole tab 222. The first rotation piece 261 includes a first main body section 2611 extending in the first direction Z and a first connection section 2612 extending in the second direction X. The second patch 262 includes a second main body section 2621 and a second connecting section 2622 both extending in the second direction X. The first main section 2611 is connected with the pole 23, and the first connecting section 2612 is connected with the second adapter plate 262.

The method of manufacturing the battery cell 20 of the present embodiment includes: providing the integrally formed housing 21, the two poles 23, the electrode assembly 22, the two adapting parts 26 and the end cap 24, respectively assembling the two poles 23 on the two first side walls 211 of the housing 21, respectively connecting (e.g., welding) the two first adapting pieces 261 of the two adapting parts 26 with the two poles 23, respectively, and specifically, connecting the first adapting pieces 261 with the inner pole 231. The second tabs 262 of the two adapter members 26 are welded (e.g., ultrasonic welding or laser welding) to the two tabs 222, respectively, and then the electrode assembly 22 with the second tabs 262 welded thereto is placed in the case 21, and the two first tabs 261 are conductively connected to the ends of the two second tabs 262, respectively, thereby completing the conductive connection of one pole 23 and one tab 222. The other pole 23 and the other tab 222 are connected in the same manner. Finally, end cap 24 is welded to housing 21 to seal cell 20.

An insulation process is also required between the electrode assembly 22 and the case 21, and an insulation film made of Mylar (Mylar) or a blue film may be used for wrapping.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (12)

1. An adapter member for a battery cell, characterized in that the adapter member is made of an electrically conductive material and comprises a first adapter sheet (261) and a second adapter sheet (262) which are separately arranged, the first adapter sheet (261) is used for connecting with one of a pole column or a pole lug, the second adapter sheet (262) is used for connecting with the other of a pole column (23) or a pole lug (222), the first adapter sheet (261) extends along a first direction (Z) substantially, the second adapter sheet (262) extends along a second direction (X) substantially, the first direction (Z) and the second direction (X) are crossed, and the first adapter sheet (261) and the second adapter sheet (262) are connected through an electrically conductive structure.

2. The adapter member for battery cells according to claim 1, wherein the first adapter plate (261) comprises a first body section (2611) and a first connection section (2612) disposed at an end of the first body section (2611), the first body section (2611) being for connecting one of the pole (23) or the tab (222); the first main body section (2611) extends along the first direction (Z), the first connecting section (2612) extends along the second direction (X), and the first connecting section (2612) is connected with the second adapter plate (262).

3. The adapter member for battery cells according to claim 2, wherein the second adapter sheet (262) comprises a second body section (2621) and a second connection section (2622) connected to the first connection section (2612), the second body section (2621) being configured to connect to the other of the pole (23) or the tab (222), wherein the first connection section (2612) extends toward a side close to the second body section (2621) relative to the first body section (2611); alternatively, the first connecting section (2612) extends towards the side far away from the second main body section (2621) relative to the first main body section (2611); alternatively, in the second direction (X), the first connection section (2612) extends toward both sides with respect to the first body section (2611).

4. The adapter member for battery cells according to claim 2 or 3, wherein the first connection section (2612) and the first body section (2611) are integrally formed.

5. The interposer component for battery cells as recited in claim 1, wherein the conductive structure comprises a solder structure, a conductive adhesive bonding structure, a rivet structure, or a conductive element.

6. Battery cell, characterized in that it comprises a housing, a pole (23), an electrode assembly (22) and an adapter part according to any one of claims 1 to 5, the housing having a receiving cavity in which the electrode assembly (22) is received, the housing comprising a housing (21) and an end cap (24), the housing (21) being integrally formed, the housing (21) comprising two first side walls (211) arranged opposite to each other in a second direction (X) and two second side walls (212) arranged opposite to each other in a third direction (Y), the two first side walls (211) and the two second side walls (212) enclosing to form the receiving cavity, the housing (21) being provided with an opening (213) at least in the first direction (Z), the second direction (X) and the third direction (Y) being perpendicular to each other, and the electrode assembly (22) includes a main body portion (221) and a tab (222) protruding from the main body portion (221) to an opening side, the pole (23) is disposed on the first side wall (211), and the end cap (24) is disposed at the opening to close the receiving cavity; the first adapter sheet (261) is connected with the pole (23), and the second adapter sheet (262) is connected with the pole lug (222).

7. The battery cell according to claim 6, wherein there are two pole posts (23), and the two pole posts (23) are respectively disposed on the two first side walls (211).

8. The battery cell according to claim 6, wherein the tab (222) comprises a positive tab and a negative tab, the positive tab and the negative tab being disposed on a same side of the body portion (221).

9. The battery cell according to claim 6, characterized in that the pole (23) is riveted or injection-molded on the first side wall (211).

10. A battery comprising a battery cell according to any one of claims 6 to 9.

11. An electric device comprising the battery of claim 10.

12. An apparatus for manufacturing a battery cell, comprising:

a first providing module (31) configured to provide an integrally formed housing (21), a pole (23) and an end cap (24), wherein the housing (21) comprises two first side walls (211) oppositely arranged in a second direction (X) and two second side walls (212) oppositely arranged in a third direction (Y), the two first side walls (211) and the two second side walls (212) enclose to form a containing cavity, and the housing (21) has at least one opening (213) in the first direction (Z);

a second providing module (32) configured to provide an electrode assembly (22), the electrode assembly (22) including a main body portion (221) and a tab (222) protruding outward from the main body portion (221);

a third providing module (33) configured to provide an adaptor part (26), wherein the adaptor part (26) comprises a first adaptor sheet (261) and a second adaptor sheet (262) which are separately arranged; and

an assembly module (34) configured to mount the pole (23) on the first side wall (211) and connect the first adaptor piece (261) with the pole (23), connect the second adaptor piece (262) with the pole tab (222), place the electrode assembly (22) in the accommodation cavity, and conductively connect the first adaptor piece (261) and the second adaptor piece (262), and dispose the end cap (24) at the opening to close the accommodation cavity.

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