Pressing and shaping device

Abstract

The utility model discloses a compaction shaping device, the compaction shaping device is used for shaping a battery monomer, the battery monomer comprises a shell and an end cover, the shell is provided with a first direction and an opening, the opening is arranged at at least one end of the shell in the first direction, and the end cover is covered on the opening. The pressing and shaping device comprises a first pressing assembly and a second pressing assembly, the first pressing assembly comprises a base and a pressing piece, a first adjusting structure is arranged between the pressing piece and the base, the first adjusting structure can adjust the distance of the pressing piece relative to the base in the first direction, and the pressing piece is used for pressing the end cover on the shell. According to the utility model, when battery monomers with different sizes need to be remodeled, remodeling can be carried out by adjusting the distance between the pressing piece and the end cover through the first adjusting structure, so that the remodeling working efficiency is improved, and high-quality risks such as steps caused by track deviation and light leakage due to inclined welding caused by unbalanced stress of the battery monomers are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a compression and shaping device. Background Art

[0002] In the manufacturing process of battery cells, the welding of end caps and shells is an indispensable process. In the welding process of battery cells, the outer shell needs to be shaped by a pressing and shaping device. The end cap welding, cutting, pulling and changing of shapes has always been a bottleneck process. During the debugging, the parts of the pressing and shaping device need to be replaced, and the changing time is relatively long. Moreover, there is a tendency for large errors to occur after the parts are replaced, which leads to quality problems in the welding process of battery cells and affects the reliability of the battery. Utility Model Content

[0003] The embodiment of the present application provides a pressing and shaping device, which can effectively reduce the changeover time of the pressing and shaping device during battery cell welding, improve the changeover efficiency, and is beneficial to improving the welding quality of the battery cell and improving the reliability of the battery cell.

[0004] The embodiment of the present application provides a compression shaping device, which is used for shaping a battery cell. The battery cell includes a shell and an end cover. The shell has a first direction and an opening. The opening is provided at least at one end of the shell in the first direction, and the end cover is provided on the opening. The compression shaping device includes: a first compression assembly, including a base and a compression member. A first adjustment structure is provided between the compression member and the base. The first adjustment structure can adjust the distance of the compression member relative to the base in the first direction. The compression member is used to press the end cover onto the shell.

[0005] In the above technical solution, the clamping and shaping device is configured to include a first clamping assembly, the first clamping assembly includes a base and a clamping piece, the clamping piece and the base can be connected by a first adjustment structure, and the first adjustment structure can adjust the distance of the clamping piece relative to the base in the first direction. Therefore, when it is necessary to change the type of battery cells of different sizes, the distance between the clamping piece and the end cover can be adjusted by the first adjustment structure to change the type, which can improve the efficiency of the changeover work. Moreover, the first adjustment structure can make the distance between the clamping piece and the end cover controllably adjustable, reduce the probability of installation errors due to replacement of parts, and help improve the accuracy of adjusting the distance between the clamping piece and the end cover, reduce the probability of a large gap when the end cover and the shell are pressed together, and reduce the probability of unbalanced force in the process of pressing and shaping the battery cell, thereby reducing the risk of high quality such as steps due to tilted welding of the battery cell caused by unbalanced force, resulting in trajectory deviation and light leakage.

[0006] In some embodiments of the present application, the first adjustment structure includes: a positioning member, which is provided on the pressing member or the base and can drive the pressing member and the base to move closer to or away from each other along a first direction.

[0007] In the above technical solution, by setting the first adjustment structure to include a positioning member, the distance between the pressing member and the base can be adjusted by the movement of the positioning member, thereby adjusting the distance between the pressing member and the end cover. The first adjustment structure adopting this structure has a relatively simple structure, which is conducive to reducing manufacturing costs, and the adjustment process is also easy to operate, which can further improve the efficiency of changeover.

[0008] In some embodiments of the present application, the positioning member is a threaded component, and the first adjustment structure also includes a threaded hole, which is provided on one of the clamping member and the base, and a portion of the threaded component is provided in the threaded hole, and one end abuts against the other of the clamping member and the base.

[0009] In the above technical solution, by setting the positioning member as a threaded member, the threaded member and the threaded hole cooperate to adjust the distance between the pressing member and the base, and then adjust the distance between the pressing member and the end cover, so as to adapt to the compression and shaping of different types of battery cells, the structure is relatively simple and the cost can be reduced. In addition, the adjustment operation using this solution is also relatively convenient, which is conducive to reducing the changeover time and improving the changeover efficiency.

[0010] In some embodiments of the present application, there are one or more first adjustment structures; when the number of the first adjustment structures is greater than or equal to three, the center lines connecting the multiple first adjustment structures form a polygonal structure.

[0011] In the above technical solution, the multiple first adjustment structures can be adjusted separately, and the center lines of the multiple first adjustment structures form a polygonal structure, which can adjust the distance between the pressing member and the base in the first direction from multiple positions, thereby adjusting the parallelism between the pressing member and the end cap, reducing the probability of non-parallelism between the pressing member and the end cap during the pressing and shaping process, and improving the adjustment accuracy of the distance between the pressing member and the end cap. In addition, the use of multiple first adjustment structures can also position the pressing member and the base from multiple positions, improving the structural stability between the pressing member and the base.

[0012] In some embodiments of the present application, the base is provided with a groove, and the pressing member is provided in the groove.

[0013] In the above technical solution, the groove can accommodate the pressing member, making the structure of the base and the pressing member more compact and reducing the size of the first pressing assembly in the first direction. Secondly, the pressing member is arranged in the groove, which can also reduce the protruding height of the surface of the pressing member away from the base relative to the base, thereby playing an avoidance role during the welding process of the battery cell and reducing the probability of the welding gun colliding with the surface of the pressing member away from the base during the movement.

[0014] In some embodiments of the present application, the shell has a second direction, and the first clamping assembly is arranged on at least one side of the shell in the second direction; there are multiple clamping members, and they are arranged at intervals along the second direction.

[0015] In the above technical solution, multiple clamping members act on multiple positions of the end cap to press the end cap against the outer shell, which can make the clamping between the end cap and the outer shell more secure and improve the reliability between the end cap and the outer shell. Secondly, multiple clamping members can flexibly adjust their respective distances from the base in the first direction through the first adjustment structure, so that multiple positions of the end cap and the clamping members can be at a suitable distance, and can more flexibly adapt to the surface conditions of the end cap for compression and shaping, reduce the probability of a larger distance or a smaller distance between the end cap and the clamping member, and reduce the probability of tilting at both ends of the first direction of the battery cell after being compressed, which can improve the compression and shaping effect.

[0016] In some embodiments of the present application, a second adjustment structure is provided between each pressing member and the base, and the second adjustment structure can adjust the pressing member to move in a second direction relative to the base.

[0017] In the above technical solution, the plurality of pressing members can move on the base through the second adjustment structure, so as to be closer to or farther away from each other, so as to adapt to battery cells with different sizes in the second direction, and have better adaptability. In addition, in this way, the adjustment range of the plurality of pressing members in the second direction is relatively large, and the applicable range of the battery cells is relatively wide, which is conducive to increasing the range of replacement.

[0018] In some embodiments of the present application, the second adjustment structure includes: a first fastener and a first adjustment hole, at least one of the base and the pressing member is provided with the first adjustment hole, the first fastener is passed through the first adjustment hole, and connects the base and the pressing member. In the above technical solution, by setting the second adjustment structure to include the first fastener and the first adjustment hole, the structure is relatively simple and the cost can be reduced. Moreover, the adjustment process using this structure is easy to operate, the adjustment time can be shortened, the adjustment efficiency can be improved, and the changeover efficiency of the pressing shaping device can be improved.

[0019] In some embodiments of the present application, the first adjustment hole is a strip-shaped hole extending along the second direction, or the first adjustment hole includes a plurality of through holes spaced apart along the second direction.

[0020] In the above technical solution, by setting the first adjustment hole as a strip hole extending along the second direction, or including a plurality of through holes spaced apart along the second direction, the structure of the first adjustment hole is relatively simple, easy to manufacture, and the manufacturing cost can be reduced. Moreover, the first adjustment hole of this structure is matched with the first fastener, so that the adjustment operation of the second adjustment structure is relatively simple, and the difficulty of getting started can be reduced.

[0021] In some embodiments of the present application, the shell has a second direction and a third direction perpendicular to each other, and the first clamping assembly is arranged on at least one side of the shell in the second direction; the clamping and shaping device also includes a mounting seat, and a third adjustment structure is provided between the mounting seat and the base, and the third adjustment structure can adjust the base to move in the third direction relative to the mounting seat.

[0022] In the above technical solution, by setting the pressing and shaping device to also include a mounting seat, a third adjustment structure is provided between the mounting seat and the base, and the third adjustment structure can adjust the base to move relative to the mounting seat in the third direction, so that the battery cell after the replacement can be debugged in the third direction. Therefore, the pressing and shaping device can debug the battery cell in the first direction and the third direction, with a wider range of adaptability and more flexible debugging, which can bring better replacement effects.

[0023] In some embodiments of the present application, the third adjustment structure includes a second fastener and a second adjustment hole, the second adjustment hole is provided on the base and extends along the third direction, the second fastener passes through the second adjustment hole and connects the mounting base and the base.

[0024] In the above technical solution, by configuring the third adjustment structure to include the second fastener and the second adjustment hole, the structure of the third adjustment structure is relatively simple, easy to manufacture, and can reduce costs. Moreover, the adjustment process of the third adjustment structure using this structure is relatively simple and easy to use, which can reduce the difficulty of debugging and improve the debugging and changing efficiency.

[0025] In some embodiments of the present application, the clamping member has a first surface and a second surface, the first surface is in contact with the base, and the second surface is away from the base. In the direction where the clamping member is away from the base, the distance between the second surface and the first surface in the first direction gradually decreases.

[0026] In the above technical solution, as the distance between the second surface and the first surface in the first direction gradually decreases in the direction in which the clamping piece moves away from the base, and the first surface is in contact with the base, the second surface is an inclined surface, and the closer to the end cover, the smaller the distance between the second surface and the first surface. In this way, the space on the side of the second surface away from the first surface is relatively large, and an avoidance space can be formed to avoid the welding gun, thereby reducing the probability of the welding gun colliding with the clamping piece during movement and improving the safety of the welding gun.

[0027] In some embodiments of the present application, the shell has a second direction, the first clamping assembly is arranged on at least one side of the shell in the second direction, the clamping member has a clamping portion for clamping the end cover, and a notch is provided at at least one end of the clamping portion in the second direction.

[0028] In the above technical solution, by providing a notch on the pressing part, the notch can reduce the contact surface between the pressing part and the end cap, which is conducive to increasing the pressure of the pressing part on the end cap and improving the pressing effect of the pressing part on the end cap. In addition, by providing the notch at at least one end of the pressing part in the second direction, the notch is arranged at the end of the pressing part for easy processing, which can reduce the manufacturing difficulty, and at the same time, the effect of weakening the strength of the pressing part is relatively small, which can reduce the probability of the pressing part breaking.

[0029] In some embodiments of the present application, the shell has a second direction and a third direction that are perpendicular to each other, and the first clamping assembly is arranged on both sides of the shell in the second direction and / or on both sides of the third direction.

[0030] In the above technical solution, by arranging the first clamping assembly on both sides of the shell in the second direction and / or on both sides of the third direction, at least two relative sides of the end cover can be clamped and shaped, which has a better clamping and shaping effect on the end cover and is conducive to further reducing the welding quality problems of the battery cell.

[0031] In some embodiments of the present application, the shell has a second direction, and the first clamping assembly is arranged on at least one side of the shell in the second direction; the compression and shaping device also includes: a second clamping assembly, which is arranged on both sides of the shell in the second direction and is used to clamp the side walls of the shell on both sides of the second direction.

[0032] In this solution, the second pressing assembly can press the side wall of the shell located in the second direction, reduce the probability of deformation of the side wall of the shell located in the second direction, and enhance the pressing and shaping effect of the pressing and shaping device on the shell.

[0033] In some embodiments of the present application, the shell has a third direction perpendicular to the second direction, and the compression and shaping device also includes: a third compression component, which is arranged on both sides of the shell in the third direction and is used to compress the side walls of the shell on both sides of the third direction.

[0034] In this solution, the side wall of the shell located in the third direction can be compressed by the third compression assembly, thereby reducing the probability of deformation of the side wall of the shell located in the third direction and enhancing the compression and shaping effect of the compression and shaping device on the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1A schematic diagram of the structure of a battery cell provided in some embodiments of the present application;

[0037] Figure 2 A partial structural schematic diagram of a compression and shaping device provided in some embodiments of the present application;

[0038] Figure 3 for Figure 2 A local enlarged schematic diagram of location III;

[0039] Figure 4 A schematic diagram of the three-dimensional structure of a pressing member provided in some embodiments of the present application;

[0040] Figure 5 A schematic diagram of a partial three-dimensional structure of a compression shaping device provided in some embodiments of the present application Figure 1 ;

[0041] Figure 6 A cross-sectional view of the cooperation between the pressing member and the base provided in some embodiments of the present application;

[0042] Figure 7 A schematic diagram of a three-dimensional structure of a base provided in some embodiments of the present application;

[0043] Figure 8 A schematic diagram of the use of a compression and shaping device in conjunction with a battery cell provided in some embodiments of the present application;

[0044] Fig. 9 A schematic diagram of a partial three-dimensional structure of a compression shaping device provided in some embodiments of the present application Figure 2 .

[0045] Icons: 100, compression shaping device; 10, first compression assembly; 11, base; 11a, groove; 12, compression member; 12a, first surface; 12b, second surface; 121, compression portion; 121a, notch; 13, first adjustment structure; 131, positioning member; 132, threaded hole; 14, second adjustment structure; 141, first fastener; 142, first adjustment hole; 1421, strip hole; 1422, through hole ; 20, mounting seat; 21, third adjustment structure; 211, second fastener; 212, second adjustment hole; 30, second clamping assembly; 310, first pressure plate; 320, first telescopic member; 40, third clamping assembly; 410, second pressure plate; 420, second telescopic member; 200, battery cell; 210, housing; 210a, opening; 220, end cover; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0048] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0051] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0052] The term "plurality" used in the present application refers to two or more (including two).

[0053] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0054] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells or multiple battery modules. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0055] The battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0056] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0057] In the manufacturing process of battery cells, the welding of end caps and shells is an indispensable process. In the welding process of battery cells, the outer shell needs to be shaped by a pressing and shaping device. The end cap welding, cutting, pulling, changing and debugging has always been a bottleneck process. During debugging, the parts of the pressing and shaping device need to be replaced, and the changing time is relatively long. After the parts are replaced, there is a large error, which leads to quality problems in the welding process of battery cells and affects the reliability of battery cells.

[0058] In a general compression and shaping device for battery cells, when the shell and the end cap are pressed, the lifting cylinder acts on the bottom of the shell, and the pressure claw cylinder acts on the end cap by connecting the pressure strip and the pressure claw on the pressure strip. The lifting cylinder and the pressure claw cylinder work synchronously to press the end cap onto the shell, and then the next step is to weld the end cap and the shell. However, for battery cells of different sizes, since the working stroke of the lifting cylinder and the pressure claw cylinder is fixed, the distance between the pressure claw and the end cap in the compression and shaping device is also pre-set. After the lifting cylinder and the pressure claw cylinder work, the end cap can be pressed onto the shell, which is convenient for the subsequent welding of the end cap and the shell.

[0059] However, when it is necessary to compress and shape battery cells of other models and sizes, due to the different sizes of different battery cells, for example, the heights of different battery cells are different, and since the stroke of the pressure claw cylinder is fixed, it is necessary to adjust the distance between the pressure claw and the end cover. During the adjustment process, the end cover welding, cutting, pulling and changing of the shape has always been a bottleneck process, especially the distance between the end cover and the pressure strip (hereinafter referred to as the height difference) is the bottleneck debugging step, among which the height difference debugging of the end cover and the pressure strip needs to be debugged by the pressure claw on the pressure strip, and the height difference directly affects the quality of the product (laser leakage, etc.). Before the end cover is welded, if the pressure strip is not properly changed, the lifting cylinder and the pressure claw cylinder will work synchronously during the press installation, which can easily cause the battery cell in the shell to tilt. Moreover, after shaping, the top pressure claw and the bottom are stressed, there is a gap between the shell and the end cover, and the pre-weld point offset laser hits the shell, causing a high risk of laser leakage. In the related art, the pressure strip and the pressure claw are integrated. For different types of battery cells, new pressure strips and pressure claws need to be replaced. Therefore, it is difficult to adjust the height difference between the end cover and the pressure strip, as well as the gap between the pressure claw and the end cover. There is a problem of large gaps in some places, which can easily lead to quality problems during the welding process of the battery cells and affect the reliability of the battery cells.

[0060] Based on the above considerations, in order to solve the problem that the compression and shaping device in the related art is difficult to change and debug when adapting to battery cells of different sizes, the probability of a large gap in the height difference adjustment is relatively high, which can easily lead to quality defects when the battery cells are welded. The inventor has designed a compression and shaping device, which is used for battery cell shaping. The battery cell includes an outer shell and an end cover. The outer shell has a first direction and an opening. The opening is provided at least at one end of the outer shell in the first direction, and the end cover is provided on the opening. The compression and shaping device includes: a first compression assembly, including a base and a compression member, a first adjustment structure is provided between the compression member and the base, the first adjustment structure can adjust the distance of the compression member relative to the base in the first direction, and the compression member is used to press the end cover onto the outer shell.

[0061] In a clamping and shaping device of this structure, the clamping and shaping device includes a first clamping assembly, the first clamping assembly includes a base and a clamping piece, and the clamping piece and the base can be connected through a first adjustment structure, and the first adjustment structure can adjust the distance of the clamping piece relative to the base in a first direction. Therefore, when the clamping and shaping device needs to be changed to adapt to battery cells of different sizes, the distance between the clamping piece and the end cover can be changed by adjusting the distance between the clamping piece and the end cover through the first adjustment structure, eliminating the step of replacing parts and improving the efficiency of the changeover work. Moreover, the first adjustment structure can make the distance between the clamping piece and the end cover controllably adjustable, and can reduce the probability of installation errors due to replacement of parts, which is conducive to improving the accuracy of the distance adjustment between the clamping piece and the end cover, reducing the probability of a large gap when the clamping piece and the end cover are pressed, which is conducive to reducing the probability of quality problems during the welding process of the battery cell, and can improve the reliability of the battery cell.

[0062] The compression shaping device disclosed in the embodiment of the present application can be used in, but not limited to, battery cells, and can also be applied to other devices or equipment with shell components. For example, the compression shaping device can also be used for tank welding of pressure vessels. This is conducive to expanding the scope of application of the compression shaping device.

[0063] According to some embodiments of the present application, referring to Figure 1 , Figure 1 The battery cell 200 is a schematic diagram of a structure of a battery cell 200 provided in an embodiment of the present application. The battery cell 200 includes a housing 210 and an end cover 220. The housing 210 has a first direction X and an opening 210a. The opening 210a is provided at least at one end of the housing 210 in the first direction X. The end cover 220 is provided to cover the opening 210a.

[0064] The housing 210 may refer to an external protective structure of the battery cell 200 for covering and protecting functional components inside the battery cell 200 .

[0065] The opening 210 a may refer to an opening provided on the housing 210 for connecting the inside and the outside of the housing 210 .

[0066] The end cap 220 may refer to a component covering the end or one end of the housing 210 to protect the internal components of the housing 210. The end cap 220 may cooperate with the opening 210a to close the housing 210 and protect the internal components of the housing 210.

[0067] The first direction X may refer to but is not limited to one of the height direction, length direction, width direction, etc. of the housing 210. The first direction X may be selected in a suitable direction as required. Figure 1 The first direction X is the height direction of the shell 210. In this example, an opening 210a is set at the top of the shell 210, and the end cover 220 is set at the top of the shell 210, that is, the compression shaping device 100 can press the end cover 220 downward onto the shell 210.

[0068] refer to Figure 2 , Figure 2 A partial structural schematic diagram of a clamping and shaping device 100 provided in an embodiment of the present application, according to an embodiment of the present application, a clamping and shaping device 100 is provided, the clamping and shaping device 100 is used for shaping a battery cell 200, the clamping and shaping device 100 includes a first clamping assembly 10, including a base 11 and a clamping member 12, a first adjustment structure 13 is provided between the clamping member 12 and the base 11, the first adjustment structure 13 can adjust the distance of the clamping member 12 relative to the base 11 in a first direction X, the clamping member 12 is used to press the end cover 220 onto the outer shell 210.

[0069] The first pressing assembly 10 may refer to an assembly for pressing the end cover 220 onto the housing 210 .

[0070] The base 11 may refer to a bearing component of the pressing member 12. The base 11 may be, but is not limited to, a plate member and a rectangular block. Figure 2 The base 11 may be a long strip-shaped substrate.

[0071] The pressing member 12 may refer to a member for pressing the end cover 220 onto the housing 210. The pressing member 12 may be, but is not limited to, a plate or block. For example, the pressing member 12 may be a pressing block, a pressing plate, etc. As can be seen, the pressing member 12 and the base 11 are split structures, and the pressing member 12 is an independent member, which is easy to adjust.

[0072] The base 11 can not only play a bearing role, but also be configured to be movable along the first direction X and along a direction perpendicular to the first direction X. Figure 2, "direction perpendicular to the first direction X" may refer to the second direction Y or the third direction Z, etc. That is, before the battery cell 200 is welded, the base 11 can move in the first direction X, and the pressing member 12 presses the end cap 220 onto the shell 210. After the pressing step is completed, the end cap 220 and the shell 210 can be pre-welded at several points, and then the base 11 moves along the second direction Y or the third direction Z, away from the battery cell 200, to facilitate the subsequent welding operations of the end cap 220 and the shell 210.

[0073] The base 11 can move along the first direction X and along the second direction Y or the third direction Z by connecting a driving component. For example, the base 11 is connected to two driving components, one of which drives the base 11 to move along the first direction X, and the other drives the base 11 along the second direction Y or the third direction. The driving component can be, but is not limited to, a cylinder, an electric push rod, a linear module, and the like.

[0074] The first adjustment structure 13 may refer to a structure or component that can adjust the distance between the base 11 and the pressing member 12 in the first direction X.

[0075] When the compacting and shaping device 100 needs to be changed to compact and shape another type of battery cell 200, the size of the current battery cell 200 is different from that of the previous type of battery cell 200. For example, it can be understood that the size of the current battery cell 200 that needs to be compacted in the first direction X is different from that of the previous battery cell 200.

[0076] In the compression shaping device 100 of the present application, when it is necessary to change the type to adapt to the battery cell 200, the distance of the compression member 12 relative to the base 11 in the first direction X can be adjusted through the first adjustment structure 13, without replacing the parts of the compression shaping device 100. Compared with the method of changing the type by replacing the parts of the compression shaping device in the related art, the distance of the compression member 12 relative to the base 11 in the first direction X is adjusted by the first adjustment structure 13, and the adjustment operation is more convenient, which can reduce the type change time and improve the type change efficiency. Moreover, the first adjustment structure 13 can adjust the compression member 12 to have multiple distances relative to the base 11 in the first direction X, so as to adapt to battery cells 200 of more sizes. The adaptability of the compression shaping device 100 is better and the application range is wider.

[0077] Secondly, since the compression and shaping device 100 of the present application can adapt to more types of battery cells 200, the cost required for compression and shaping of the battery cells 200 can be reduced (compared to the previous need to pre-manufacture multiple compression claws and pressure strips to adapt to multiple types of battery cells 200, the compression and shaping device 100 of the present application only requires one device to adapt to more types of battery cells 200), which is beneficial to reducing the manufacturing cost of the battery cells 200.

[0078] Compared with the related art, when replacing the parts of the compression shaping device to adapt to battery cells 200 of different sizes, installation errors are prone to occur when replacing parts, affecting the distance adjustment between the compression member 12 and the end cover 220, and further affecting the press-fitting accuracy of the end cover 220 and the housing 210. The present application adjusts the distance of the compression member 12 relative to the base 11 in the first direction X through the first adjustment structure 13, which makes the adjustment process controllable, reduces the probability of errors, and is conducive to improving the adjustment accuracy of the distance of the compression member 12 relative to the base 11 in the first direction X.

[0079] In addition, the clamping and shaping device 100 of the present application adjusts the distance of the clamping member 12 relative to the base 11 in the first direction X through the first adjustment structure 13, which can also reduce the debugging of driving components (such as cylinders and other components) and the corresponding limit seat debugging, and can also simplify the debugging steps, shorten the adjustment time, and improve the mold change efficiency.

[0080] In the above technical solution, the clamping and shaping device 100 is configured to include a first clamping assembly 10, the first clamping assembly 10 includes a base 11 and a clamping piece 12, the clamping piece 12 and the base 11 can be connected via a first adjusting structure 13, and the first adjusting structure 13 can adjust the distance of the clamping piece 12 relative to the base 11 in the first direction X. Therefore, when it is necessary to replace the battery cells 200 of different sizes, the distance between the clamping piece 12 and the end cover 220 can be adjusted by the first adjusting structure 13 to perform the replacement, thereby improving the efficiency of the replacement work. Moreover, the first adjustment structure 13 can make the distance between the clamping piece 12 and the end cover 220 controllably adjustable, reducing the probability of installation errors due to replacement of parts, which is beneficial to improving the accuracy of distance adjustment between the clamping piece 12 and the end cover 220, reducing the probability of large gaps appearing when the end cover 220 and the outer shell 210 are press-fitted, and reducing the probability of unbalanced force during the press-fitting and shaping process of the battery cell 200, thereby reducing the risk of high quality such as steps due to tilted welding of the battery cell 200 caused by unbalanced force, resulting in trajectory deviation and light leakage.

[0081] In some embodiments of the present application, reference Figure 3 The first adjustment structure 13 includes a positioning member 131, which is disposed on the pressing member 12 or the base 11 and can drive the pressing member 12 and the base 11 to move closer to or farther from each other along the first direction X.

[0082] The positioning member 131 may refer to a component that can position the pressing member 12 or the base 11 .

[0083] The positioning member 131 may be a member that moves along the first direction X. For example, the positioning member 131 is a telescopic member relative to the pressing member 12 or the base 11 , and the positioning member 131 can adjust the distance between the pressing member 12 and the base 11 through telescopic movement, thereby adjusting the distance between the pressing member 12 and the end cover 220 .

[0084] The positioning member 131 may also be a component that moves in a direction perpendicular to the first direction X. For example, the positioning member 131 is a wedge-shaped block. Since the height of the wedge-shaped block gradually increases or decreases, the wedge-shaped block moves in a direction perpendicular to the first direction X, so that the distance between the pressing member 12 and the base 11 can be adjusted.

[0085] The positioning member 131 may be disposed on the pressing member 12, and when the positioning member 131 moves, it can act on the base 11 to drive the base 11 and the pressing member 12 to move closer to or farther away from each other along the first direction X for adjustment. The positioning member 131 may also be disposed on the base 11, and when the positioning member 131 moves, it can act on the pressing member 12 to drive the pressing member 12 and the base 11 to move closer to or farther away from each other along the first direction X for adjustment.

[0086] In the above technical solution, by setting the first adjustment structure 13 to include a positioning member 131, the distance between the pressing member 12 and the base 11 can be adjusted by the movement of the positioning member 131, thereby adjusting the distance between the pressing member 12 and the end cover 220. The first adjustment structure 13 with this structure is relatively simple in structure, which is conducive to reducing manufacturing costs, and the adjustment process is also easy to operate, which can further improve the efficiency of changing molds.

[0087] In some embodiments of the present application, reference Figure 3 and Figure 4 The positioning member 131 is a threaded member, and the first adjustment structure 13 also includes a threaded hole 132, which is provided on one of the clamping member 12 and the base 11, and a portion of the threaded member is provided in the threaded hole 132, and one end of the threaded member abuts against the other of the clamping member 12 and the base 11.

[0088] The threaded component may refer to a part or assembly with a threaded structure, wherein the threaded component may be, but is not limited to, a jackscrew, a bolt, or the like.

[0089] The threaded hole 132 may refer to a hole that forms a threaded structure inside an object. The threaded hole 132 may be provided on the clamping member 12. In this case, the threaded member is screwed to the clamping member 12 through the threaded hole 132. One end of the threaded member abuts against the base 11. When the threaded member is screwed and moved along the first direction X, it can push the clamping member 12 and the base 11 away from or closer to each other (see Figure 3 and Figure 4The threaded hole 132 may also be provided on the base 11. In this case, the threaded component is screwed to the base 11 through the threaded hole 132. One end of the threaded component abuts against the clamping member 12. When the threaded component is screwed and moved along the first direction X, it can push the clamping member 12 and the base 11 away from or closer to each other.

[0090] In the above technical solution, by setting the positioning member 131 as a threaded member, the threaded member and the threaded hole cooperate to adjust the distance between the pressing member 12 and the base 11, and then adjust the distance between the pressing member 12 and the end cover 220, so as to adapt to the compression and shaping of different types of battery cells 200, the structure is relatively simple and the cost can be reduced. In addition, the adjustment operation using this solution is also relatively convenient, which is conducive to reducing the changeover time and improving the changeover efficiency.

[0091] In some embodiments of the present application, the first adjustment structure 13 is one or more. In this technical solution, the first adjustment structure 13 can be one, so as to adapt to a smaller-sized pressing member 12, while meeting the adjustment requirements and taking the cost into consideration. The first adjustment structure 13 can also be multiple, so as to adapt to a larger-sized pressing member 12. By providing multiple first adjustment structures 13, a larger-sized pressing member 12 can be supported, thereby improving the stability and reliability of the distance adjustment between the pressing member 12 and the base 11.

[0092] In some embodiments of the present application, the number of the first adjustment structures 13 is greater than or equal to three, and a center line connecting the plurality of first adjustment structures 13 forms a polygonal structure.

[0093] The polygonal structure may be, but is not limited to, a triangle, a quadrilateral, a pentagon, etc. The number of the first adjustment structures 13 may be, but is not limited to, three, four, five, etc. For example, refer to Figure 3 The number of the first adjustment structures 13 is four, and the center lines of the four first adjustment structures 13 form a quadrilateral structure.

[0094] In the above technical solution, the multiple first adjustment structures 13 can be adjusted separately, and the center lines of the multiple first adjustment structures 13 form a polygonal structure, which can adjust the distance between the pressing member 12 and the base 11 in the first direction X from multiple positions, so that the parallelism between the pressing member 12 and the end cover 220 can be adjusted, reducing the probability of non-parallelism between the pressing member 12 and the end cover 220 during the pressing and shaping process, and improving the adjustment accuracy of the distance between the pressing member 12 and the end cover 220. In addition, the use of multiple first adjustment structures 13 can also position the pressing member 12 and the base 11 from multiple positions, thereby improving the structural stability between the pressing member 12 and the base 11.

[0095] In some embodiments of the present application, reference Figure 2 , Figure 3 and Figure 7The base 11 is provided with a groove 11 a, and the pressing member 12 is arranged in the groove 11 a.

[0096] The groove 11a may refer to a slot opened on the base 11. The groove 11a can form a space on the base 11, and the space can be used to accommodate the pressing member 12. The shape of the groove 11a may be, but is not limited to, a rectangle, a trapezoid, a semicircle, etc. For example, refer to Figure 2 and Figure 7 The groove 11 a is in the shape of a long strip groove and extends along the second direction Y. The groove 11 a can accommodate a larger number of pressing members 12 .

[0097] In the above technical solution, the groove 11a can accommodate the pressing member 12, making the structure of the base 11 and the pressing member 12 more compact, and reducing the size of the first pressing assembly 10 in the first direction X. Secondly, the pressing member 12 is arranged in the groove 11a, which can also reduce the protruding height of the surface of the pressing member 12 away from the base 11 relative to the base 11, thereby playing an avoidance role during the welding process of the battery cell 200, reducing the probability of the welding gun colliding with the surface of the pressing member 12 away from the base 11 during the movement.

[0098] In some embodiments of the present application, reference Figure 2 and Figure 5 The housing 210 has a second direction Y, and the first clamping assembly 10 is arranged on at least one side of the housing 210 in the second direction Y; there are multiple clamping members 12, and they are arranged at intervals along the second direction Y.

[0099] The second direction Y may refer to the lateral direction of the opening 210 a . For example, if the end cover 220 is disposed on the top of the housing 210 , the second direction Y may refer to the length direction or the width direction of the housing 210 .

[0100] The first pressing assembly 10 may be disposed on one side of the housing 210 in the second direction Y; or, the first pressing assembly 10 may be disposed on both sides of the housing 210 in the second direction Y.

[0101] With reference to the foregoing, no matter the second direction Y is the length direction or the width direction of the end face where the opening 210a in the outer shell 210 is located, the clamping member 12 can be provided in plurality, and the end cover 220 can be pressed against the outer shell 210 at a plurality of positions of the end cover 220 by means of the plurality of clamping members 12, thereby the plurality of positions of the end cover 220 can be pressed, thereby improving the pressing effect of the end cover 220 and the outer shell 210, and making the pressing of the end cover 220 and the outer shell 210 more secure.

[0102] Secondly, the plurality of pressing members 12 can be adjusted separately through their respective first adjustment structures 13. If the end cover 220 itself is uneven, the distances between the plurality of pressing members 12 and the base 11 after adjustment through the first adjustment structure 13 can be the same or different, thereby making the distance between the pressing member 12 and the end cover 220 in the first direction X within a suitable range. For example, where the end cover 220 is more convex, the corresponding distance between the pressing member 12 and the base 11 in the first direction X is smaller after adjustment; where the end cover 220 is more concave, the corresponding distance between the pressing member 12 and the base 11 in the first direction X is larger after adjustment. In this way, after the base 11 moves along the first direction X by a pre-designed stroke, the pressing member 12 can press the end cover 220 against the housing 210, and the gap between the end cover 220 and the housing 210 can remain basically consistent, and the probability of a large gap is relatively low. Moreover, after the base 11 is pushed out perpendicular to the second direction Y or the third direction Z, the probability of excessive clamping force between the plurality of clamping members 12 and the end cover 220 can be reduced, and the probability of damage to the end cover 220 caused by the clamping members 12 dragging the end cover 220 can also be reduced, which is beneficial to reducing quality problems of the battery cell 200.

[0103] In the above technical solution, multiple pressing members 12 act on multiple positions of the end cap 220 to press the end cap 220 against the outer shell 210, which can make the pressing between the end cap 220 and the outer shell 210 more secure, and improve the reliability between the end cap 220 and the outer shell 210. Secondly, multiple pressing members 12 can flexibly adjust their respective distances from the base 11 in the first direction X through the first adjustment structure 13, so that multiple positions of the end cap 220 and the pressing members 12 can be at a suitable distance, and can more flexibly adapt to the surface conditions of the end cap 220 for pressing and shaping, reduce the probability of a larger distance or a smaller distance between the end cap 220 and the pressing member 12, and can reduce the probability of tilting at both ends of the first direction X of the battery cell 200 after being pressed, which can improve the pressing and shaping effect.

[0104] In some embodiments of the present application, reference Figure 2 and Figure 3 A second adjustment structure 14 is provided between each pressing member 12 and the base 11 , and the second adjustment structure 14 can adjust the pressing member 12 to move in the second direction Y relative to the base 11 .

[0105] The second adjustment structure 14 may refer to a structure or component that can adjust the distance between the base 11 and the pressing member 12 in the second direction Y.

[0106] Referring to the foregoing, a plurality of clamping members 12 are arranged on one side of the second direction Y of the outer shell 210, and the sizes of different types of battery cells 200 in the second direction Y may also be different. Therefore, the plurality of clamping members 12 can be adapted to different types of battery cells 200 by adjusting the movement of the clamping members 12 in the second direction Y relative to the base 11 through the second adjustment structure 14. For example, the second direction Y may refer to the length direction of the outer shell 210. If the length of the outer shell 210 is relatively small, the plurality of clamping members 12 can be moved on the base 11 through the second adjustment structure 14 and can be close to each other, so that the plurality of clamping members 12 can be pressed on the end cover 220; if the length of the outer shell 210 is relatively large, the plurality of clamping members 12 can be moved on the base 11 through the second adjustment structure 14 and can be moved away from each other, so that the plurality of clamping members 12 are dispersed and pressed on the end cover 220, thereby enhancing the pressing effect of the plurality of clamping members 12 on the end cover 220.

[0107] In the above technical solution, the plurality of pressing members 12 can move on the base 11 through the second adjustment structure 14, so as to be closer to or farther away from each other, so as to adapt to the battery cells 200 of different sizes in the second direction Y, and have better adaptability. In addition, in this way, the adjustment range of the plurality of pressing members 12 in the second direction Y is relatively large, and the applicable range of the battery cells 200 is relatively wide, which is conducive to increasing the range of replacement.

[0108] In some embodiments of the present application, reference Figure 3 The second adjustment structure 14 includes a first fastener 141 and a first adjustment hole 142. At least one of the base 11 and the pressing member 12 is provided with the first adjustment hole 142. The first fastener 141 is passed through the first adjustment hole 142 and connects the base 11 and the pressing member 12.

[0109] The first fastener 141 may refer to a device or part used to connect, fix or fasten the base 11 and the pressing member 12. The first fastener 141 may be, but is not limited to, a bolt, a screw, a pin, and the like.

[0110] The first adjustment hole 142 may refer to a hole having an adjustable space, and the first fastener 141 can move in the adjustable space, so that the position of the pressing member 12 relative to the base 11 in the second direction Y is adjustable.

[0111] In this solution, the base 11 may be provided with a first adjustment hole 142, and the first fastener 141 passes through the first adjustment hole 142 to connect to the pressing member 12, thereby fixing the base 11 and the pressing member 12 together. Alternatively, the pressing member 12 may be provided with a first adjustment hole 142, and the first fastener 141 passes through the first adjustment hole 142 to connect to the base 11, thereby fixing the base 11 and the pressing member 12 together. Alternatively, both the base 11 and the pressing member 12 may be provided with a first adjustment hole 142 (see Figure 3 and Figure 6), the first fastener 141 passes through the two first adjustment holes 142 to fix the base 11 and the pressing member 12 together.

[0112] In the above technical solution, by setting the second adjustment structure 14 to include the first fastener 141 and the first adjustment hole 142, the structure is relatively simple, which can reduce the cost. Moreover, the adjustment process using this structure is easy to operate, which can shorten the adjustment time and improve the adjustment efficiency, thereby improving the change efficiency of the compaction shaping device 100.

[0113] In some embodiments of the present application, reference Figure 3 , Figure 4 , Figure 5 and Figure 7 The first adjustment hole 142 is a bar-shaped hole 1421 extending along the second direction Y, or the first adjustment hole 142 includes a plurality of through holes 1422 arranged at intervals along the second direction Y.

[0114] Referring to the foregoing, when one of the base 11 and the pressing member 12 is provided with the first adjustment hole 142, the first adjustment hole 142 may be a bar-shaped hole 1421 extending along the second direction Y, or the first adjustment hole 142 includes a plurality of through holes 1422 spaced apart along the second direction Y. When both the base 11 and the pressing member 12 are provided with the first adjustment hole 142, the two first adjustment holes 142 may both be bar-shaped holes 1421 extending along the second direction Y; or the two first adjustment holes 142 may both include a plurality of through holes 1422 spaced apart along the second direction Y; or one of the two first adjustment holes 142 may be a bar-shaped hole 1421 extending along the second direction Y, and the other may include a plurality of through holes 1422 spaced apart along the second direction Y.

[0115] Exemplary, reference Figure 3 , Figure 4 and Figure 7 Both the base 11 and the clamping member 12 are provided with a first adjustment hole 142, wherein the first adjustment hole 142 of the base 11 includes a plurality of through holes 1422 spaced apart along the second direction Y, and the first adjustment hole 142 of the clamping member 12 is a bar hole 1421 extending along the second direction Y.

[0116] The strip-shaped hole 1421 may be, but not limited to, a rectangular long hole, a waist-shaped hole, etc. The through hole 1422 may be, but not limited to, a rectangular hole, a round hole, a triangular hole, etc.

[0117] In the above technical solution, by setting the first adjustment hole 142 as a strip hole 1421 extending along the second direction Y, or including a plurality of through holes 1422 spaced apart along the second direction Y, the structure of the first adjustment hole 142 is relatively simple, easy to manufacture, and the manufacturing cost can be reduced. Moreover, the first adjustment hole 142 with this structure cooperates with the first fastener 141, so that the adjustment operation of the second adjustment structure 14 is relatively simple, which can reduce the difficulty of getting started.

[0118] In some embodiments of the present application, reference Figure 8 and Fig. 9 The shell 210 has a second direction Y and a third direction Z that are perpendicular to each other, and the first clamping assembly 10 is arranged on at least one side of the shell 210 in the second direction Y; the clamping and shaping device 100 also includes a mounting seat 20, and a third adjustment structure 21 is provided between the mounting seat 20 and the base 11, and the third adjustment structure 21 can adjust the base 11 to move in the third direction Z relative to the mounting seat 20.

[0119] The second direction Y may refer to one of the length direction or the width direction of the end surface where the opening 210a of the housing 210 is located, and the third direction Z may refer to the other of the length direction or the width direction. Exemplarily, the second direction Y is the length direction of the end surface where the opening 210a of the housing 210 is located, and the third direction Z is the width direction of the end surface where the opening 210a of the housing 210 is located.

[0120] The mounting base 20 may refer to a connecting component that connects the base 11 and the driving component. For example, the mounting base 20 may be connected to two driving components, one of which drives the mounting base 20 along the first direction X, and the other drives the mounting base 20 along the second direction Y or the third direction Z, thereby driving the base 11 to move. Exemplarily, the mounting base 20 can move along the first direction X and the third direction Z.

[0121] The third adjustment structure 21 may refer to a structure or component that can adjust the position of the base 11 on the mounting base 20 along the third direction Z. Optionally, the third adjustment structure 21 is provided at both ends of the base 11 in the second direction Y. It can be understood that by providing the third adjustment structure 21 at both ends of the base 11 in the second direction Y, the probability of the base 11 being deflected relative to the second direction Y can be reduced, which is conducive to improving the installation reliability of the base 11.

[0122] For different types of battery cells 200, their sizes in the third direction Z may also be different. The third adjustment structure 21 can adjust the position of the base 11 relative to the end cover 220 in the third direction Z, so as to adapt to battery cells 200 with different sizes in the third direction Z. For example, if the size of the battery cell 200 after the replacement changes in the third direction Z, the third adjustment structure 21 only needs to adjust the base 11 to move relative to the mounting base 20 in the third direction Z, so that the pressing member 12 is pressed against the edge of the end cover 220, and the battery cell 200 can be debugged in the third direction Z.

[0123] In the above technical solution, by setting the pressing and shaping device 100 to also include a mounting seat 20, a third adjustment structure 21 is provided between the mounting seat 20 and the base 11, and the third adjustment structure 21 can adjust the base 11 to move relative to the mounting seat 20 in the third direction Z, so that the battery cell 200 after the replacement can be debugged in the third direction Z. Therefore, the pressing and shaping device 100 can debug the battery cell 200 in the first direction X and the third direction Z, with a wider range of adaptability and more flexible debugging, which can bring better replacement effects.

[0124] In some embodiments of the present application, reference Figure 2 , Figure 5 , Figure 7 and Figure 8 The third adjustment structure 21 includes a second fastener 211 and a second adjustment hole 212. The second adjustment hole 212 is provided on the base 11 and extends along the third direction Z. The second fastener 211 passes through the second adjustment hole 212 and connects the mounting base 20 and the base 11.

[0125] The second fastener 211 may refer to a device or part used to connect, fix or fasten the base 11 and the mounting base 20. The second fastener 211 may be, but is not limited to, a bolt, a screw, a pin, and the like.

[0126] The second adjustment hole 212 may be a hole with an adjustable space, and the second fastener 211 can move in the adjustable space, so that the position of the mounting base 20 relative to the base 11 in the third direction Z is adjustable. Figure 2 , Figure 5 , Figure 7 and Figure 8 The second adjustment hole 212 can be a long hole extending along the third direction Z.

[0127] Optionally, the number of the second fasteners 211 can be at least two. By providing at least two second fasteners 211 to cooperate with the second adjustment holes 212, the connection reliability between the mounting seat 20 and the base 11 can be improved, and the probability of the base 11 being deflected relative to the mounting seat 20 relative to the third direction Z can be reduced.

[0128] For example, the number of the second fasteners 211 may be three.

[0129] In the above technical solution, by configuring the third adjustment structure 21 to include the second fastener 211 and the second adjustment hole 212, the structure of the third adjustment structure 21 is relatively simple, easy to manufacture, and can reduce costs. Moreover, the adjustment process of the third adjustment structure 21 using this structure is relatively simple and easy to use, which can reduce the difficulty of debugging and improve the debugging and changing efficiency.

[0130] In some embodiments of the present application, reference Figure 4 and Figure 6 The pressing member 12 is provided with a first surface 12a and a second surface 12b. The first surface 12a is in contact with the base 11, and the second surface 12b is away from the base 11. In the direction in which the pressing member 12 is away from the base 11, the distance between the second surface 12b and the first surface 12a in the first direction X gradually decreases.

[0131] The first surface 12a and the second surface 12b may refer to two surfaces of the pressing member 12 (see Figure 4 and Figure 6 ).

[0132] In the above technical solution, as the distance between the second surface 12b and the first surface 12a in the first direction X gradually decreases in the direction in which the clamping piece 12 moves away from the base 11, and the first surface 12a is in contact with the base 11, the second surface 12b is an inclined surface, and the closer to the end cover 220, the smaller the distance between the second surface 12b and the first surface 12a. In this way, the space on the side of the second surface 12b away from the first surface 12a is relatively large, and an avoidance space can be formed to avoid the welding gun, thereby reducing the probability of the welding gun colliding with the clamping piece 12 during movement, thereby improving the safety of the welding gun.

[0133] In some embodiments of the present application, reference Figure 4 The shell 210 has a second direction Y, the first clamping assembly 10 is arranged on at least one side of the shell 210 in the second direction Y, the clamping member 12 has a clamping portion 121 for clamping the end cover 220, and the clamping portion 121 is located at least at one end in the second direction Y and has a notch 121a.

[0134] In the above solution, the first clamping assembly 10 can be arranged on one side of the housing 210 located in the second direction Y; or, the first clamping assembly 10 can be arranged on both sides of the housing 210 located in the second direction Y.

[0135] The pressing portion 121 may refer to the portion of the pressing member 12 that contacts the end cover 220 and performs a pressing function.

[0136] The notch 121a may refer to a space formed by hollowing out the pressing portion 121. The pressing portion 121 may be provided with a notch 121a at one end thereof in the second direction Y; or, the pressing portion 121 may be provided with notches 121a at both ends thereof in the second direction Y.

[0137] In the above technical solution, by providing the notch 121a on the pressing part 121, the notch 121a can reduce the contact surface between the pressing part 121 and the end cover 220, which is conducive to increasing the pressure of the pressing part 121 on the end cover 220, and improving the pressing effect of the pressing part 121 on the end cover 220. In addition, by providing the notch 121a at least one end of the pressing part 121 in the second direction Y, the notch 121a is arranged at the end of the pressing part 121, which is easy to process and can reduce the manufacturing difficulty. At the same time, the strength of the pressing part 121 is weakened less, which can reduce the probability of the pressing part 121 breaking.

[0138] In some embodiments of the present application, the housing 210 has a second direction Y and a third direction Z that are perpendicular to each other, and the first clamping assembly 10 is disposed on both sides of the housing 210 in the second direction Y and / or both sides of the third direction Z.

[0139] Referring to the foregoing, the second direction Y may refer to one of the length direction and the width direction of the end surface of the housing 210 where the notch 121 a is provided, and the third direction Z is the other of the length direction and the width direction.

[0140] The first clamping assembly 10 can be arranged on both sides of the shell 210 in the second direction Y; or, the first clamping assembly 10 can be arranged on both sides of the shell 210 in the third direction Z; or, the first clamping assembly 10 can be arranged on both sides of the shell 210 in the second direction Y and both sides of the third direction Z.

[0141] Exemplarily, the second direction Y can be the length direction of the housing 210, and the third direction Z can be the width direction of the housing 210. It can be understood that the first clamping assembly 10 can be arranged on both sides of the length direction of the housing 210 to compress and shape the two sides of the length direction of the end cover 220; or, the first clamping assembly 10 can be arranged on both sides of the width direction of the housing 210 to compress and shape the two sides of the width direction of the end cover 220; or, the first clamping assembly 10 can be arranged on both sides of the width direction and both sides of the length direction of the housing 210 to compress and shape the two sides of the width direction and the two sides of the length direction of the end cover 220.

[0142] In the above technical solution, by arranging the first clamping assembly 10 on both sides of the outer shell 210 in the second direction Y and / or on both sides of the third direction Z, at least two relative sides of the end cover 220 can be clamped and shaped, which has a better clamping and shaping effect on the end cover 220 and is beneficial to further reduce the welding quality problem of the battery cell 200.

[0143] In some embodiments of the present application, reference Figure 8 and Fig. 9 The shell 210 has a second direction Y, and the first clamping assembly 10 is arranged on at least one side of the shell 210 in the second direction Y; the clamping and shaping device 100 also includes a second clamping assembly 30, and the second clamping assembly 30 is arranged on both sides of the shell 210 in the second direction Y, and is used to clamp the side walls of the shell 210 on both sides of the second direction Y.

[0144] The second pressing assembly 30 may be a assembly for pressing the side wall of the housing 210 in the second direction Y. Referring to the foregoing, the second direction Y may be the length direction or the width direction of the housing 210 , and the second pressing assembly 30 may be used for pressing the long side wall or the short side wall of the housing 210 .

[0145] Optionally, refer to Fig. 9 The second pressing assembly 30 may include a first pressing plate 310 and a first telescopic member 320. The first telescopic member 320 is connected to the first pressing plate 310. The first telescopic member 320 may drive the first pressing plate 310 to move along the second direction Y to press the side wall of the housing 210. The first telescopic member 320 may be, but is not limited to, a cylinder and an electric push rod.

[0146] In the above technical solution, the second clamping assembly 30 can clamp the side wall of the shell 210 located in the second direction Y, reduce the probability of deformation of the side wall of the shell 210 located in the second direction Y, and enhance the clamping and shaping effect of the clamping and shaping device 100 on the shell 210.

[0147] In some embodiments of the present application, reference Figure 8 and Fig. 9 The shell 210 has a third direction Z perpendicular to the second direction Y. The compression and shaping device 100 also includes a third compression component 40. The third compression component 40 is arranged on both sides of the shell 210 in the third direction Z, and is used to compress the side walls of the shell 210 on both sides of the third direction Z.

[0148] The second direction Y may refer to one of the length direction and the width direction of the housing 210, and the third direction Z may refer to the other of the length direction and the width direction of the housing 210. Exemplarily, the second direction Y is the length direction of the housing 210, and the third direction Z is the width direction of the housing 210.

[0149] The third pressing assembly 40 may be a assembly for pressing the side wall of the housing 210 in the third direction Z. Referring to the foregoing, the third direction Z is the width direction of the housing 210 , and the second pressing assembly 30 may be used for pressing the short side wall of the housing 210 .

[0150] Optionally, refer to Fig. 9 The third pressing assembly 40 may include a second pressing plate 410 and a second telescopic member 420, wherein the second telescopic member 420 is connected to the second pressing plate 410, and the second telescopic member 420 may drive the second pressing plate 410 to move along the third direction Z to press the side wall of the housing 210. The second telescopic member 420 may be, but is not limited to, a cylinder and an electric push rod.

[0151] In the above technical solution, the third clamping assembly 40 can clamp the side wall of the shell 210 located in the third direction Z, reduce the probability of deformation of the side wall of the shell 210 located in the third direction Z, and enhance the clamping and shaping effect of the clamping and shaping device 100 on the shell 210.

[0152] According to the clamping and shaping device 100 provided in the embodiment of the present application, for the integrated pressure strip and pressure claw type, the clamping and shaping device 100 includes a first clamping assembly 10, which is arranged on the two long sides of the housing 210, and includes a base 11 and a clamping member 12. The clamping member 12 can be a pressure claw, and the clamping member 12 is provided with a waist-shaped hole extending along the length direction of the housing 210, and the base 11 is provided with a plurality of threaded holes arranged at intervals along the length direction of the housing 210, and the threaded holes are stepped threaded holes. The bolts can be matched with the waist-shaped holes and the plurality of threaded holes to realize the adjustment of the clamping member 12 and the base 11 along the length direction of the housing 210, and the adjustable range is large, which can effectively reduce the debugging of the related base limit seat and the cylinder. Moreover, the clamping member 12 and the base 11 are detachable, and the compatible range is relatively wide.

[0153] The clamping member 12 is provided with four top screws, and one end of the top screw is attached to the base 11. The four top screws can effectively correct the non-parallelism of the battery cell 200 and the non-parallelism of the clamp. Moreover, the four top screws can quickly adjust the height difference between the clamping member 12 and the end cover 220 and the force balance problem of the battery cell 200, which can effectively reduce the high-quality risks such as the tilted welding track deviation of the battery cell 200, light leakage, and steps caused by the unbalanced force.

[0154] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0155] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A compression shaping device, the compression shaping device is used for shaping a battery cell, the battery cell comprises a shell and an end cover, the shell has a first direction and an opening, the opening is arranged at least at one end of the shell in the first direction, the end cover is arranged on the opening, characterized in that: The compacting and shaping device comprises: The first clamping assembly includes a base and a clamping member, a first adjustment structure is provided between the clamping member and the base, the first adjustment structure can adjust the distance of the clamping member relative to the base in the first direction, and the clamping member is used to clamp the end cover onto the shell.

2. The compression shaping device according to claim 1, characterized in that: The first adjustment structure includes: a positioning member, which is arranged on the pressing member or the base and can drive the pressing member and the base to move closer to or farther from each other along the first direction.

3. The compression shaping device according to claim 2, characterized in that: The positioning member is a threaded component, and the first adjustment structure also includes a threaded hole, which is arranged on one of the clamping member and the base. The threaded component is arranged in the threaded hole, and one end of the threaded component abuts against the other of the clamping member and the base.

4. The compression shaping device according to claim 2 or 3, characterized in that: There are one or more first adjustment structures; when the number of the first adjustment structures is greater than or equal to three, the center lines connecting the multiple first adjustment structures form a polygonal structure.

5. The compression shaping device according to claim 4, characterized in that: The base is provided with a groove, and the pressing piece is arranged in the groove.

6. The compacting and shaping device according to any one of claims 1 to 3, characterized in that: The shell has a second direction, and the first pressing assembly is arranged on at least one side of the shell located in the second direction; the pressing members are multiple and are arranged at intervals along the second direction.

7. The compression shaping device according to claim 6, characterized in that: A second adjustment structure is provided between each of the pressing members and the base, and the second adjustment structure can adjust the pressing member to move in the second direction relative to the base.

8. The compression shaping device according to claim 7, characterized in that: The second adjustment structure includes: a first fastener and a first adjustment hole, at least one of the base and the pressing member is provided with the first adjustment hole, the first fastener is passed through the first adjustment hole and connects the base and the pressing member.

9. The compression shaping device according to claim 8, characterized in that: The first adjustment hole is a strip-shaped hole extending along the second direction, or the first adjustment hole includes a plurality of through holes spaced apart along the second direction.

10. The compacting and shaping device according to any one of claims 1 to 3, characterized in that: The shell has a second direction and a third direction that are perpendicular to each other, and the first clamping assembly is arranged on at least one side of the shell in the second direction; the clamping and shaping device also includes a mounting seat, and a third adjustment structure is provided between the mounting seat and the base, and the third adjustment structure can adjust the base to move relative to the mounting seat in the third direction.

11. The compression shaping device according to claim 10, characterized in that: The third adjustment structure includes a second fastener and a second adjustment hole, the second adjustment hole is arranged on the base and extends along the third direction, the second fastener passes through the second adjustment hole and connects the mounting seat and the base.

12. The compacting and shaping device according to any one of claims 1 to 3, characterized in that: The pressing member is provided with a first surface and a second surface, the first surface is attached to the base, the second surface is away from the base, and in the direction in which the pressing member is away from the base, the distance between the second surface and the first surface in the first direction gradually decreases.

13. The compacting and shaping device according to any one of claims 1 to 3, characterized in that: The shell has a second direction, the first clamping assembly is arranged on at least one side of the shell located in the second direction, the clamping member has a clamping portion for clamping the end cover, and at least one end of the clamping portion located in the second direction is provided with a notch.

14. The compacting and shaping device according to any one of claims 1 to 3, characterized in that: The shell has a second direction and a third direction that are perpendicular to each other, and the first pressing assembly is arranged on both sides of the shell in the second direction and / or on both sides of the third direction.

15. The compacting and shaping device according to any one of claims 1 to 3, characterized in that: The shell has a second direction, and the first clamping assembly is arranged on at least one side of the shell in the second direction; the clamping and shaping device also includes: a second clamping assembly, which is arranged on both sides of the shell in the second direction and is used to clamp the side walls of the shell on both sides of the second direction.

16. The compression and shaping device according to claim 15, characterized in that: The shell has a third direction perpendicular to the second direction, and the pressing and shaping device also includes: a third pressing component, which is arranged on both sides of the shell in the third direction and is used to press the side walls of the shell on both sides of the third direction.

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