CN219040537U - Battery assembling device - Google Patents

Abstract

The application discloses a battery assembly device, which comprises a die assembly and a first buffer piece, wherein the die assembly comprises a first die and a second die which are oppositely arranged, and the first die and the second die are used for clamping a shell with an opening of a battery monomer; the first buffer member is connected to the first die and is used for covering at least part of the end face of the shell surrounding the opening. The battery assembly device of the embodiment of the application can reduce the risk that the electrode assembly is scratched by burrs on the end face, and improve the yield of the battery cells.

Description

Battery assembling device

Technical Field

The present disclosure relates to the field of batteries, and more particularly, to a battery assembly device.

Background

Battery cells are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like.

In the development of battery technology, how to improve the yield of battery cells is an important research direction in battery technology.

Disclosure of Invention

The application provides a battery assembly device, it can improve the free yields of battery.

The application provides a battery assembling device, which comprises a die assembly and a first buffer piece, wherein the die assembly comprises a first die and a second die which are oppositely arranged, and the first die and the second die are used for clamping a shell with an opening of a battery cell; the first buffer member is connected to the first die and is used for covering at least part of the end face of the shell surrounding the opening.

In the above technical scheme, set up first bolster on first mould, utilize first bolster to cover the casing and encircle at least part of open-ended terminal surface to reduce the risk that electrode assembly was scraped by the burr on the terminal surface when assembling electrode assembly in the casing, improve single yields.

In some embodiments, the first bumper is also used to cover at least a portion of the opening.

In the above technical scheme, the first buffer piece is arranged to cover at least part of the opening, so that when the electrode assembly enters the shell, the first buffer piece can be jacked into the shell from the opening by the electrode assembly and attached to the inner surface of the side wall of the shell, therefore, the first buffer piece not only covers the corresponding end face, but also covers the inner surface of the side wall corresponding to the end face, thereby reducing the risk that the edge of the end face of the part scrapes the electrode assembly, and improving the yield of the battery cells.

In some embodiments, the first buffer member includes a first body and a first sub-portion arranged along a first direction, the first sub-portion being bendable and connected to the first body, the first body being connected to the first mold and configured to cover a portion of the end surface, the first sub-portion being configured to cover at least a portion of the opening.

In the technical scheme, the first sub-part is arranged to be bent and connected with the first body, and then the first sub-part can be bent and enter the shell when the electrode assembly enters the shell.

In some embodiments, the first buffer further comprises a second sub-portion, the second sub-portion being bendable and connected to the first body and configured to cover a portion of the opening, the second sub-portion being disposed adjacent to the first sub-portion along a second direction, wherein the second direction intersects the first direction, the first buffer being configured such that when the first sub-portion is bent relative to the first body, a junction of the first sub-portion and the first body forms a first fold line, and the first buffer being configured such that when the second sub-portion is bent relative to the first body, a junction of the second sub-portion and the first body forms a second fold line, wherein the second fold line intersects the first fold line.

In the above technical scheme, set up the second sub-portion to set up the second sub-portion for buckling and connect in first body, then in electrode assembly gets into the casing then the second sub-portion alright buckle and get into the casing in, thereby increase the area of the terminal surface that first bolster covered, further reduce the burr on the terminal surface and the risk that the edge of terminal surface scraped the electrode assembly, increase the free yields of battery.

In some embodiments, the number of second sub-portions is two, and two second sub-portions are located on both sides of the first sub-portion in the second direction.

In the above technical scheme, the second sub-portion is arranged on two opposite sides of the first sub-portion in the second direction, and then the first body which is connected with the second sub-portion in a bending way can cover two opposite end faces of the shell in the second direction, so that the area of the end face covered by the first buffer piece is further increased, the risk of scraping the electrode assembly by burrs and edges on the end face is reduced, and the yield of the battery is improved.

In some embodiments, the first body, the first sub-portion, and the second sub-portion are integrally provided.

In the above technical scheme, the first body, the first sub-portion and the second sub-portion are integrally arranged, and the arrangement mode is convenient for manufacturing and realizing bendable connection of the first sub-portion and the second sub-portion with the first body respectively.

In some embodiments, the battery assembly device further includes a second buffer member connected to the second mold and configured to cover a portion of the end surface of the housing surrounding the opening.

In the above technical scheme, the second buffer piece is arranged to cover the end face close to the second die, so that the covered area of the end face is increased, the risk of scraping the electrode assembly by burrs on the end face is reduced, and the yield of the battery cells is improved. And when first mould and second mould separate then can pull out first bolster and second bolster from the casing respectively, it is very convenient, use manpower sparingly.

In some embodiments, the second bumper also serves to cover portions of the opening.

In the above technical scheme, the second buffer piece is arranged to cover the opening, so that when the electrode assembly enters the shell, the second buffer piece can be pushed into the shell from the opening by the electrode assembly and attached to the inner surface of the side wall of the shell, and therefore, the second buffer piece not only covers the corresponding end face, but also covers the inner surface of the side wall corresponding to the end face, thereby reducing the risk that the edge of the end face of the part scrapes the electrode assembly, and improving the yield of the battery cells.

In some embodiments, the first mold is provided with a first recess, a bottom wall of the first recess being adapted to clamp the housing with the second mold, at least part of the first cushioning member protruding from the bottom wall of the first recess.

In the above technical scheme, the first die is provided with the first groove, the first groove is used for clamping the shell, the shell can be limited in the arrangement direction of the two side walls of the first groove, the displacement of the shell in the direction is limited, the position accuracy of the shell is improved, and therefore the assembly efficiency of the electrode assembly and the shell is improved.

In some embodiments, the second mold is provided with a second groove, and the first groove and the second groove enclose to form a containing space, and the containing space is used for containing at least part of the shell; the bottom wall of the first groove and the bottom wall of the second groove are used for clamping the shell.

In the above technical scheme, the second die is provided with the second groove, and the first groove and the second groove are used for clamping the shell, so that the second groove can limit the arrangement direction of the two side walls of the second groove to the shell, further limit the displacement of the shell in the direction, improve the position accuracy of the shell, and further improve the assembly efficiency of the electrode assembly and the shell.

In some embodiments, the battery assembly device further comprises a guiding mold, the guiding mold comprises a first guiding sub-mold and a second guiding sub-mold, the first guiding sub-mold is provided with a third groove, the third groove is used for being enclosed with the second guiding sub-mold to form a cavity matched with the outer peripheral side of the battery cell assembly, and the cavity is used for allowing part of the battery cell assembly to pass through.

In the above technical scheme, the guide die is arranged to guide the movement of the electrode assembly when the electrode assembly enters the shell, so that the position accuracy of the electrode assembly when the electrode assembly enters the shell is increased, and the assembly efficiency of the electrode assembly and the shell is increased.

In some embodiments, the first guiding sub-die further comprises a first guiding ramp connected to the bottom wall of the third groove.

In the technical scheme, the first guide inclined plane is arranged to guide the electrode assembly into the accommodating cavity, so that the assembly efficiency of the electrode assembly and the shell is improved.

Drawings

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

FIG. 1 is a schematic view of an assembled structure of a housing, a cell assembly, and a battery assembly device according to an embodiment of the present application;

FIG. 2 is an exploded view of the housing, cell assembly and battery assembly device shown in FIG. 1;

FIG. 3 is a schematic view of a first buffer member of a battery assembly device according to an embodiment of the present disclosure;

fig. 4 is another structural schematic diagram of a first buffer member of the battery assembling device according to the embodiment of the present application;

fig. 5 is a schematic structural view of a first mold of the battery assembling device according to the embodiment of the present application;

fig. 6 is a schematic structural view of a first guide sub-mold of the battery assembling device according to the embodiment of the present application.

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

Marking:

1. a mold assembly; 11. a first mold; 111. a first groove; 12. a second mold; 121. a second groove;

2. a first buffer member; 21. a first body; 22. a first sub-section; 23. a first folding line; 24. a second sub-section; 25. a second folding line;

3. a second buffer member;

4. a housing; 41. an opening; 42. an end face;

5. a cell assembly; 51. an electrode assembly; 52. a top cover assembly;

6. guiding a die; 61. a first guide sub-die; 611. a third groove; 612. a first guiding inclined surface; 62. a second guide sub-die; 621. a fourth groove; 622. a second guiding inclined surface;

x, a first direction; y, second direction.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within 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 in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

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

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

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

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

In the present application, the battery cells may include lithium ion secondary battery cells, lithium ion primary battery cells, lithium sulfur battery cells, sodium lithium ion battery cells, sodium ion battery cells, or magnesium ion battery cells, and the embodiment of the present application is not limited thereto. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector; the positive electrode current collector comprises a positive electrode coating area and a positive electrode lug connected to the positive electrode coating area, wherein the positive electrode coating area is coated with a positive electrode active material layer, and the positive electrode lug is not coated with the positive electrode active material layer. Taking a lithium ion battery monomer as an example, the material of the positive electrode current collector can be aluminum, the positive electrode active material layer comprises a positive electrode active material, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate and the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector comprises a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, wherein the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with the negative electrode active material layer. The material of the anode current collector may be copper, the anode active material layer includes an anode active material, and the anode active material may be carbon or silicon, or the like. The material of the separator may be PP (polypropylene) or PE (polyethylene), etc.

The battery cell further includes a case inside which a receiving chamber for receiving the electrode assembly is formed. The case may protect the electrode assembly from the outside to prevent foreign substances from affecting the charge or discharge of the electrode assembly.

The cell assembly generally includes an electrode assembly and a cap assembly, and when the cell assembly is assembled in the case, the case is generally clamped by a mold assembly, and then the electrode assembly is pushed into the case from an opening of the case by a pushing mechanism, and the case and the cap assembly are connected to complete the assembly of the cell assembly and the case.

The inventor finds that the end face of the shell surrounding the opening often has irregular burrs, and the risk of the battery cell assembly being scratched by the burrs on the end face is caused in the process of assembling the battery cell assembly on the shell, so that the yield of the battery cell is reduced, and potential safety hazards are caused.

In view of this, the inventor sets up the bolster on the mould subassembly, covers the at least partial terminal surface of casing around the opening with the bolster to reduce the risk that the electrode assembly was scraped by the burr on the terminal surface, improve the yields of battery monomer.

Fig. 1 is a schematic diagram of an assembly structure of a housing, a battery cell assembly, and a battery assembly device according to an embodiment of the present application, fig. 2 is an exploded view of the housing, the battery cell assembly, and the battery assembly device shown in fig. 1, and fig. 3 is a schematic diagram of a structure of a first buffer member of the battery assembly device according to an embodiment of the present application.

As shown in fig. 1 to 3, the battery assembling apparatus of the embodiment of the present application includes a mold assembly 1 and a first buffer member 2. The die assembly 1 includes a first die 11 and a second die 12 disposed opposite to each other, the first die 11 and the second die 12 being for holding the case 4 of the battery cell having the opening 41. The first cushioning member 2 is connected to the first mold 11, and the first cushioning member 2 is configured to cover at least a portion of an end surface 42 of the housing 4 surrounding the opening 41.

The connection manner of the first buffer 2 and the first mold 11 is not limited in the embodiment of the present application. For example, the first buffer 2 and the first mold 11 may be connected by screwing or bonding.

Alternatively, the first cushioning member 2 is provided on the side of the first mold 11 adjacent to the opening 41.

The material of the first cushion member 2 is not limited in the embodiment of the present application. Alternatively, the first buffer member 2 is made of a soft material. The first buffer member 2 is exemplified by a PET polyester film or a silicone material.

The first cushioning member 2 of the present embodiment may cover a portion of the end face 42, or may cover the entire end face 42 as shown in fig. 3.

The battery cell of the embodiment of the present application includes a case 4 and a cell assembly 5, and the cell assembly 5 includes an electrode assembly 51 and a top cap assembly 52.

At least one of the first mold 11 and the second mold 12 of the embodiment of the present application may be close to or far from each other so as to clamp the housing 4.

The first buffer member 2 is arranged on the first mould 11, and at least part of the end face 42 of the shell 4 surrounding the opening 41 is covered by the first buffer member 2, so that the risk that the electrode assembly 51 is scratched by burrs on the end face 42 when the electrode assembly 51 is assembled in the shell 4 is reduced, and the yield of the battery cells is improved.

In some embodiments, the first buffer 2 also serves to cover at least part of the opening 41.

The first cushioning member 2 of the present embodiment may cover a portion of the opening 41, or may cover the entire opening 41 as shown in fig. 3. Wherein covering means that the first cushioning member 2 covers the opening 41 from outside the opening 41, i.e., the projection of the first cushioning member 2 onto the opening 41 in the axial direction of the opening 41 covers at least part of the opening 41.

The first cushion member 2 is fixed to the first mold 11 in part and in another part can be pushed into the case 4 from the opening 41 by the electrode assembly 51 and fitted to the inner surface of the side wall of the case 4 when the electrode assembly 51 enters the case 4.

The first buffer member 2 is arranged to cover at least part of the opening 41, so that when the electrode assembly 51 enters the casing 4, the first buffer member 2 can be pushed into the casing 4 from the opening 41 by the electrode assembly 51 and attached to the inner surface of the side wall of the casing 4, and therefore, the first buffer member 2 not only covers the corresponding end face 42, but also covers the inner surface of the side wall corresponding to the end face 42, thereby reducing the risk that the edge of the part of the end face 42 scrapes the electrode assembly 51, and improving the yield of the battery cells.

Fig. 4 is another structural schematic diagram of the first buffer member of the battery assembling device according to the embodiment of the present application.

As shown in fig. 4, in some embodiments, the first cushioning member 2 includes a first body 21 and a first sub-portion 22 arranged along the first direction X, the first sub-portion 22 is flexibly connected to the first body 21, the first body 21 is connected to the first mold 11 and is configured to cover a portion of the end surface 42, and the first sub-portion 22 is configured to cover at least a portion of the opening 41.

The first body 21 of the embodiment of the present application is fixed to the first mold 11, and the first sub-portion 22 may be bent relative to the first body 21, and in the assembly process, the first sub-portion 22 is pushed into the opening 41 by the electrode assembly 51 so as to be bent and attached to a part of the inner surface of the sidewall of the case 4.

The first sub-portion 22 in the embodiment of the present application may cover a portion of the opening 41, or may cover all of the opening 41.

The shape of the first sub-portion 22 is not limited in the embodiment of the present application. The first body 21 and the first sub-portion 22 are respectively in a sheet structure, the first body 21 is attached to the first mold 11, and the first sub-portion 22 is rectangular or trapezoidal in shape.

The first sub-part 22 is arranged to be connected to the first body 21 in a bending way, and then the first sub-part 22 can be bent into the shell 4 when the electrode assembly 51 enters the shell 4.

In some embodiments, the first cushioning member 2 further comprises a second sub-portion 24, the second sub-portion 24 being bendable connected to the first body 21 and adapted to cover the partial opening 41, the second sub-portion 24 being disposed adjacent to the first sub-portion 22 along a second direction Y, wherein the second direction Y intersects the first direction X, the first cushioning member 2 being configured to form a first fold line 23 at a junction of the first sub-portion 22 and the first body 21 when the first sub-portion 22 is bent relative to the first body 21, the first cushioning member 2 being configured to form a second fold line 25 at a junction of the second sub-portion 24 and the first body 21 when the second sub-portion 24 is bent relative to the first body 21, wherein the second fold line 25 intersects the first fold line 23.

The second sub-portion 24 in the embodiment of the present application may be bent and connected to the first body 21, that is, the second sub-portion 24 may be bent relative to the first body 21, and in the assembly process, the second sub-portion 24 is pushed into the opening 41 by the electrode assembly 51 so as to be bent and attached to the inner surface of the sidewall of the case 4.

Optionally, the second folding line 25 is perpendicular to the first folding line 23, and the second direction Y is perpendicular to the first direction X.

In this embodiment, the second sub-portion 24 is disposed adjacent to the first sub-portion 22, which means that there is no other structure between the second sub-portion 24 and the first sub-portion 22, and only a gap exists between them.

The shape of the second sub-portion 24 is not limited in the embodiment of the present application. Illustratively, the second sub-portion 24 is triangular or other irregularly shaped.

The second sub-portion 24 is provided, and the second sub-portion 24 is bent and connected to the first body 21, so that when the electrode assembly 51 enters the casing 4, the second sub-portion 24 can be bent and enter the casing 4, thereby increasing the area of the end face 42 covered by the first buffer member 2, further reducing the burrs on the end face 42 and the risk of scraping the electrode assembly 51 by the edges of the end face 42, and increasing the yield of the battery cells.

In some embodiments, the number of second sub-portions 24 is two, and two second sub-portions 24 are located on both sides of the first sub-portion 22 in the second direction Y.

The second sub-portion 24 is disposed on two opposite sides of the first sub-portion 22 in the second direction Y, so that the first body 21, which is bendable and connected with the second sub-portion 24, can cover two opposite end faces 42 of the housing 4 in the second direction Y, further increase the area of the first buffer member 2 covering the end faces 42, reduce the risk of scraping the electrode assembly 51 by burrs and edges on the end faces 42, and improve the yield of the battery cells.

In some embodiments, the first body 21, the first sub-portion 22, and the second sub-portion 24 are integrally provided.

The first body 21, the first sub-portion 22 and the second sub-portion 24 in this embodiment are integrally formed, that is, made of the same material.

The first body 21, the first sub-portion 22 and the second sub-portion 24 are integrally arranged, and the arrangement mode is convenient for manufacturing and realizing bendable connection of the first sub-portion 22 and the second sub-portion 24 with the first body 21 respectively.

In some embodiments, the battery assembly device further comprises a second buffer 3, the second buffer 3 being connected to the second mould 12 and being adapted to cover a portion of the casing 4 surrounding the end face 42 of the opening 41.

The connection manner of the second buffer 3 and the second mold 12 is not limited in the embodiment of the present application. The second buffer 3 and the second mould 12 are connected by means of a screw connection or an adhesive connection, for example.

Optionally, the second buffer 3 is disposed on a side of the second mold 12 close to the opening 41 of the housing 4.

The material of the second cushion member 3 is not limited in the embodiment of the present application. Alternatively, the second buffer 3 is made of a soft material. The second buffer 3 is exemplified by a PET polyester film or a silicone material.

The second cushioning members 3 and the first cushioning members 2 are arranged along the first direction X in the embodiment of the present application.

The second buffer member 3 is arranged to cover the end face 42 close to the second die 12, so that the covered area of the end face 42 is increased, the risk of scraping the electrode assembly 51 by burrs on the end face 42 is reduced, and the yield of the battery cells is improved. And when the first die 11 and the second die 12 are separated, the first buffer piece 2 and the second buffer piece 3 can be pulled out of the shell 4 respectively, so that the device is extremely convenient and labor-saving.

In some embodiments, the second buffer 3 also serves to cover a portion of the opening 41.

Covering means that the second cushioning member 3 covers the opening 41 from the outside of the opening 41, i.e., the projection of the second cushioning member 3 onto the opening 41 in the axial direction of the opening 41 covers part of the opening 41.

The second buffer member 3 is arranged to cover the opening 41, so that when the electrode assembly 51 enters the casing 4, the second buffer member 3 can be pushed into the casing 4 from the opening 41 by the electrode assembly 51 and attached to the inner surface of the side wall of the casing 4, and therefore, the second buffer member 3 not only covers the corresponding end face 42, but also covers the inner surface of the side wall corresponding to the end face 42, thereby reducing the risk that the edge of the end face 42 of the part scrapes the electrode assembly 51, and improving the yield of the battery cells.

In some embodiments, the second cushioning member 3 is symmetrically disposed with the first cushioning member 2 along an axis parallel to the second direction Y.

The first buffer piece 2 and the second buffer piece 3 are symmetrically arranged, so that the processing, the manufacturing and the installation are convenient.

Fig. 5 is a schematic structural view of a first mold of the battery assembling device according to the embodiment of the present application.

As shown in fig. 5, in some embodiments, the first mold 11 is provided with a first groove 111, and a bottom wall of the first groove 111 is used to clamp the housing 4 with the second mold 12, and at least part of the first buffer member 2 protrudes from the bottom wall of the first groove 111.

The shape of the first recess 111 of the embodiment of the present application matches the shape and size of the housing 4.

The first mold 11 is provided with the first groove 111, and the first groove 111 clamps the case 4, so that the case 4 is limited in the arrangement direction of the two side walls of the first groove 111, the displacement of the case 4 in the direction is limited, and the positional accuracy of the case 4 is improved, thereby improving the assembly efficiency of the electrode assembly 51 and the case 4.

In some embodiments, the second mold 12 is provided with a second groove 121, and the first groove 111 and the second groove 121 enclose an accommodating space for accommodating at least part of the housing 4; the bottom wall of the first recess 111 and the bottom wall of the second recess 121 are used for holding the housing 4.

Optionally, the receiving space matches the shape and size of the housing 4.

The second mold 12 is provided with the second groove 121, and the housing 4 is clamped by the first groove 111 and the second groove 121, so that the second groove 121 can limit the position of the housing 4 in the arrangement direction of the two side walls of the second groove 121, further limit the displacement of the housing 4 in the direction, and improve the position accuracy of the housing 4, thereby improving the assembly efficiency of the electrode assembly 51 and the housing 4.

Optionally, the side walls of the first recess 111 and the side walls of the second recess 121 are also used to clamp the housing 4. In this way, the friction force of the mold assembly 1 to the case 4 can be increased, so that the case 4 is fixed more firmly, and the assembly efficiency of the electrode assembly 51 and the case 4 is improved.

Fig. 6 is a schematic structural view of a first guide sub-mold of the battery assembling device according to the embodiment of the present application.

As shown in fig. 6, in some embodiments, the battery assembly device further includes a guide mold 6, the guide mold 6 includes a first guide sub-mold 61 and a second guide sub-mold 62, the first guide sub-mold 61 is provided with a third groove 611, and the third groove 611 is used to enclose with the second guide sub-mold 62 to form a cavity matched with the outer circumferential side of the electrode assembly 51, and the cavity is used to pass through a part of the electrode assembly 51.

The cavities of the embodiments of the present application match the shape and size of the electrode assembly 51.

At least one of the first guide sub-mold 61 and the second guide sub-mold 62 of the embodiment of the present application may be close to or distant from each other. In a specific application scenario, the electrode assembly 51 extends into the cavity, moves into the housing 4 under the guiding action of the cavity, and after moving to a certain distance, at least one of the first guiding sub-die 61 and the second guiding sub-die 62 moves away from each other, that is, is in an open state, and the electrode assembly 51 continues to extend into the housing 4.

The guide mold 6 is provided to guide the movement of the electrode assembly 51 when the electrode assembly 51 enters the case 4, increasing the positional accuracy of the electrode assembly 51 when entering the case 4, thereby increasing the assembly efficiency of the electrode assembly 51 and the case 4.

In some embodiments, the first guiding sub-die 61 further includes a first guiding inclined surface 612, and the first guiding inclined surface 612 is connected to the bottom wall of the third groove 611.

The specific shape of the first guide slope 612 is not limited in the embodiments of the present application. Illustratively, the first guiding ramp 612 may be a flat surface, a curved surface, or an irregular surface of a combination of flat and curved surfaces.

The first guiding slope 612 of the embodiment of the present application extends from the bottom wall of the third groove 611 in a direction away from the opening of the third groove 611.

The first guide inclined surface 612 is provided to guide the electrode assembly 51 into the receiving chamber, improving the assembly efficiency of the electrode assembly 51 and the case 4.

In some embodiments, the second guiding sub-mold 62 is provided with a fourth groove 621, and the third groove 611 and the fourth groove 621 jointly enclose the cavity. The second guide sub-mold 62 further includes a second guide slope 622, and the second guide slope 622 is connected to the bottom wall of the fourth groove 621.

The specific shape of the second guide slope 622 is not limited in the embodiments of the present application. Illustratively, the second guiding inclined surface 622 may be a plane surface, a curved surface, or an irregular surface of a combination of plane and curved surfaces.

The second guide slope 622 of the embodiment of the present application extends from the bottom wall of the fourth groove 621 in a direction away from the opening of the fourth groove 621.

The second guide inclined surface 622 is provided to guide the electrode assembly 51 into the receiving cavity, improving the assembly efficiency of the electrode assembly 51 and the case 4.

Referring to fig. 1 and 2, a battery assembling device provided in an embodiment of the present application includes a mold assembly 1 and a first buffer member 2. The die assembly 1 includes a first die 11 and a second die 12 disposed opposite to each other, the first die 11 and the second die 12 being for holding the case 4 of the battery cell having the opening 41. The first cushioning member 2 is connected to the first mold 11, and the first cushioning member 2 is configured to cover at least a portion of an end surface 42 of the housing 4 surrounding the opening 41. The first buffer 2 also serves to cover at least part of the opening 41. The battery assembly device further includes a second buffer member 3, and the second buffer member 3 is connected to the second mold 12 and serves to cover a portion of the case 4 surrounding the end face 42 of the opening 41. The second buffer 3 also serves to cover a portion of the opening 41.

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

Claims (12)

1. A battery assembly device, comprising:

the die assembly comprises a first die and a second die which are oppositely arranged, wherein the first die and the second die are used for clamping a shell with an opening of a battery cell; and

and the first buffer piece is connected with the first die and is used for covering at least part of the end face of the shell surrounding the opening.

2. The battery assembly device of claim 1, wherein the first buffer is further configured to cover at least a portion of the opening.

3. The battery assembly device of claim 2, wherein the first buffer comprises a first body and a first sub-portion arranged along a first direction, the first sub-portion being bendable connected to the first body, the first body being connected to the first mold and configured to cover a portion of the end face, the first sub-portion being configured to cover at least a portion of the opening.

4. The battery assembly device of claim 3, wherein the first buffer further comprises a second sub-portion flexibly connected to the first body and adapted to cover a portion of the opening, the second sub-portion being disposed adjacent to the first sub-portion in a second direction, wherein the second direction intersects the first direction,

the first buffer is configured to form a first folding line at the joint of the first sub-part and the first body when the first sub-part is bent relative to the first body, and the first buffer is configured to form a second folding line at the joint of the second sub-part and the first body when the second sub-part is bent relative to the first body, wherein the second folding line intersects the first folding line.

5. The battery assembly device of claim 4, wherein the number of second sub-portions is two, and two of the second sub-portions are located on both sides of the first sub-portion in the second direction.

6. The battery assembly device of claim 4, wherein the first body, the first sub-portion, and the second sub-portion are integrally provided.

7. The battery assembly device of any one of claims 1-6, wherein,

and a second buffer member connected to the second mold and configured to cover a portion of the housing surrounding the end face of the opening.

8. The battery assembly device of claim 7, wherein the second buffer is further configured to cover a portion of the opening.

9. The battery assembly device of claim 1, wherein the first mold is provided with a first groove, a bottom wall of the first groove is used for clamping the housing with the second mold,

at least part of the first buffer piece protrudes out of the bottom wall of the first groove.

10. The battery assembly device according to claim 9, wherein the second die is provided with a second groove, and the first groove and the second groove enclose a receiving space for receiving at least part of the housing;

the bottom wall of the first groove and the bottom wall of the second groove are used for clamping the shell.

11. The battery assembly device of claim 1, further comprising a guide die, the guide die comprising a first guide sub-die and a second guide sub-die, the first guide sub-die being provided with a third groove for enclosing with the second guide sub-die to form a cavity matching an outer peripheral side of the cell assembly, the cavity being for a portion of the cell assembly to pass through.

12. The battery assembly device of claim 11, wherein,

the first guiding sub-die further comprises a first guiding inclined plane, and the first guiding inclined plane is connected to the bottom wall of the third groove.

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