Welding seat, welding device and battery manufacturing equipment

Abstract

The utility model discloses a welding seat, a welding device and battery manufacturing equipment. The welding seat is used for ultrasonic welding and provided with a bearing face, the bearing face is provided with a plurality of grooves, the grooves are arranged at intervals in the first direction, each groove extends in the second direction, and the first direction intersects with the second direction. The welding seat can effectively improve the welding quality of materials.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a welding seat, a welding device and a battery manufacturing equipment. Background Art

[0002] With the development of new energy technology, batteries are being used more and more widely. Batteries have high energy density, high safety, long service life, and are green and environmentally friendly to the social environment. They have been widely used in passenger cars, commercial vehicles, electric bicycles, heavy trucks, energy storage facilities, battery swap stations, engineering manufacturing, smart equipment, etc. At the same time, they also promote technical development and research in communications, medical equipment, energy development, etc.

[0003] In the battery production process, an ultrasonic welding device is required to weld the first material and the second material. For example, a welding device is used to weld a transfer plate and a tab. How to improve the welding quality of the materials is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The embodiments of the present application provide a welding seat, a welding device and a battery manufacturing equipment, wherein the welding seat can effectively improve the welding quality of the material.

[0005] In a first aspect, an embodiment of the present application provides a welding seat, which is used for ultrasonic welding. The welding seat has a bearing surface, and the bearing surface is provided with a plurality of grooves. The plurality of grooves are arranged at intervals along a first direction, and each of the grooves extends along a second direction, and the first direction intersects with the second direction.

[0006] In the above technical solution, a groove is provided on the bearing surface, and a part of the first material is sunk into the groove, which can not only limit the movement of the first material along the first direction to limit the position of the first material, but also the bearing surface can have a larger contact area with the first material. During use, the bearing surface is not easy to wear, which is beneficial to improving the welding quality of the material.

[0007] In some embodiments, the first direction is parallel to the ultrasonic vibration direction.

[0008] In the above technical solution, the first material can easily move relative to the welding seat along the direction of ultrasonic vibration. Therefore, the first direction is parallel to the direction of ultrasonic vibration, and thus the arrangement direction of the multiple grooves is parallel to the direction of ultrasonic vibration, which can effectively improve the limiting effect of the welding seat on the first material and alleviate the displacement of the first material in the direction of ultrasonic vibration.

[0009] In some embodiments, the first direction is perpendicular to the second direction.

[0010] In the above technical solution, the first direction is perpendicular to the second direction. In this way, the extension direction of the groove is perpendicular to the ultrasonic vibration direction, which can further improve the limiting effect of the welding seat on the first material and alleviate the displacement of the first material in the ultrasonic vibration direction.

[0011] In some embodiments, the bearing surface is a plane.

[0012] In the above technical solution, the bearing surface is a plane, which can further increase the contact area between the bearing surface and the first material, alleviate the wear of the bearing surface, and improve the welding quality of the material.

[0013] In some embodiments, the groove includes two first side surfaces arranged opposite to each other along a first direction, and the first side surfaces are connected to the bearing surface via a chamfered surface.

[0014] In the above technical solution, the chamfered surface can alleviate the adhesion between the first material and the welding seat, which is conducive to removing the welded material from the welding seat and reducing the possibility of material damage.

[0015] In some embodiments, the groove includes a bottom surface, and the bottom surface is a curved surface that is recessed in a direction away from the supporting surface.

[0016] In the above technical solution, the bottom surface of the groove is a curved surface that is concave in the direction away from the bearing surface, which is convenient for processing by wire cutting, reduces the difficulty of preparing the welding seat, and improves the production efficiency of the welding seat.

[0017] In some embodiments, the groove includes a bottom surface and two first side surfaces arranged opposite to each other along the first direction, and the first side surfaces are tangent to the bottom surface.

[0018] In the above technical solution, the first side surface is tangent to the bottom surface, which is beneficial to improving the consistency of the welding seat interface.

[0019] In some embodiments, the welding seat has a first end surface and a second end surface opposite to each other in the second direction, and the groove extends to the first end surface and the second end surface.

[0020] In the above technical solution, the groove runs through two opposite ends of the welding seat in the second direction, which can reduce the difficulty of preparing the welding seat.

[0021] In some embodiments, the groove includes two first side surfaces arranged opposite to each other along a first direction, the projection of the first side surfaces in a third direction is a sawtooth line or a wavy line, and the first direction, the second direction and the third direction are perpendicular to each other.

[0022] In the above technical solution, the projection of the first side surface in the third direction is a sawtooth line or a wavy line, that is, the first side surface is non-planar. In this way, the contact area between the first side surface and the first material is larger, which can further improve the limiting effect of the welding seat on the first material and alleviate the displacement of the first material relative to the welding seat.

[0023] In some embodiments, the welding seat is made of tungsten steel or ceramic.

[0024] In the above technical solution, the welding seat made of tungsten steel or ceramic has high hardness and good wear resistance, which can extend the service life of the welding seat.

[0025] In a second aspect, an embodiment of the present application provides a welding device, comprising a welding head and a welding seat of any one of the above embodiments, wherein the welding seat and the welding head are arranged relative to each other along a third direction, the bearing surface faces the welding head, and the third direction, the second direction and the first direction are perpendicular to each other.

[0026] In a third aspect, an embodiment of the present application provides a battery manufacturing device, the battery manufacturing device comprising a welding seat of any of the above embodiments or a welding device of any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the structure of a welding device in some embodiments of the present application;

[0029] Figure 2 A schematic diagram of the structure of the welding base in some embodiments of the present application at a viewing angle;

[0030] Figure 3 A cross-sectional view of a welding base along an XZ plane of some embodiments of the present application;

[0031] Figure 4 A schematic diagram of a welding base fixing a first material in some embodiments of the present application;

[0032] Figure 5 It is a cross-sectional view of the welding base along the XZ plane of some other embodiments of the present application;

[0033] Figure 6 A cross-sectional view of the welding base in the XZ plane of some other embodiments of the present application;

[0034] Figure 7A schematic diagram of the structure of welding bases in some other embodiments of the present application at a viewing angle;

[0035] Figure 8 A schematic diagram of the structure of the welding base in some other embodiments of the present application at another viewing angle;

[0036] Fig. 9 It is a schematic diagram of the structure of welding bases of some other embodiments of the present application;

[0037] Fig.10 This is a schematic diagram of the structure of the welding base of some other embodiments of the present application;

[0038] Fig.11 It is a schematic structural diagram of welding bases of some other embodiments of the present application.

[0039] Icon: 1000-welding device; 100-welding seat; 200-welding head; 10-bearing surface; 20-first end face; 30-second end face; 40-groove; 40a-welding tooth; 41-first side face; 42-bottom face; 50-chamfered surface; a-first material; b-second material; X-first direction; Y-second direction; Z-third direction; F-ultrasonic vibration direction; P-symmetry axis.

[0040] The views are not drawn to scale. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0046] The term "or" in this application is merely a description of the association relationship of associated objects, indicating that two relationships may exist. For example, A or B may represent two situations: A exists alone, and B exists alone.

[0047] 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.

[0048] The term "plurality" used in the present application refers to two or more (including two).

[0049] In the present application, battery cells may include but are not limited to lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc. Battery cells include but are not limited to cylinders, flat bodies, rectangular parallelepipeds or other shapes, etc. Battery cells generally include cylindrical battery cells, square battery cells and soft-pack battery cells, etc., according to the packaging method.

[0050] The battery cell includes a positive electrode tab, a negative electrode tab, an adapter, a positive terminal and a negative terminal. The positive electrode tab is connected to the positive terminal through an adapter, and the negative electrode tab is connected to the negative terminal through an adapter, thereby leading out the positive and negative electrodes of the battery cell.

[0051] 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. The box can reduce the impact of liquid or other foreign matter on the charging or discharging of the battery cells.

[0052] During the battery production process, an ultrasonic welding device is required to weld the first material and the second material, for example, to weld the adapter plate and the pole ear. The welding seat and the adapter plate remain relatively fixed, the welding head and the pole ear remain relatively fixed, and the vibration of the welding head drives the pole ear to move relative to the rotating piece. The pole ear and the adapter plate rub against each other to generate heat and thus weld.

[0053] During this welding process, the movement of the adapter plate relative to the welding seat will affect the welding quality. In order to reduce the displacement of the adapter plate relative to the welding seat and improve the welding quality, the related technology provides a plurality of block-shaped quadrangular pyramid teeth on the welding seat to limit the movement of the adapter plate relative to the welding seat. However, the tooth tips of the quadrangular pyramid teeth are sharp and easily worn. After wear, the limiting effect of the welding seat on the adapter plate is poor, resulting in poor welding between the adapter plate and the pole ear and poor welding quality between the adapter plate and the pole ear.

[0054] In view of this, in order to solve the problem of poor welding quality between the adapter and the tab due to wear of the welding seat, an embodiment of the present application provides a welding seat, which has a bearing surface, and the bearing surface is provided with a plurality of grooves, the plurality of grooves are arranged at intervals along a first direction, and each groove extends along a second direction, and the first direction intersects with the second direction.

[0055] By setting a groove on the bearing surface, a part of the first material is sunk into the groove, which not only limits the movement of the first material along the first direction and limits the position of the first material, but also the bearing surface and the first material have a larger contact area. During use, the bearing surface is not easy to wear, which is beneficial to improving the welding quality of the material.

[0056] The technical solution disclosed in the embodiment of the present application is applicable to but not limited to the welding of the adapter and the tab.

[0057] Figure 1 Schematic diagram of the structure of a welding device 1000 according to some embodiments of the present application.

[0058] Reference Figure 1The embodiment of the present application provides a welding device 1000, which is used for ultrasonic welding. The welding device 1000 includes a welding head 200 and a welding seat 100. The welding seat 100 is arranged opposite to the welding head 200. The welding seat 100 has a bearing surface 10 facing the welding head 200. The welding seat 100 is used to bear a first material a, and the welding head 200 is used to grab a second material b. The first material a and the second material b can be sheets.

[0059] The welding head 200 is a component that outputs ultrasonic energy to the material in the welding operation. The welding head 200 contacts the second material b, and transmits ultrasonic vibration energy to the second material b and the first material a. The material of the welding head 200 includes but is not limited to titanium alloy, aluminum alloy, and steel. When the operation requires, the welding head 200 can be processed according to the situation, such as high carbon steel embedding, chrome plating, anodizing, etc.

[0060] The welding seat 100 is a component that fixes and supports the first material a during the welding process. The welding seat 100 needs to be wear-resistant and make the first material a firm and stable to improve welding quality and efficiency.

[0061] When the first material a and the second material b are welded, the second material b and the welding head 200 remain relatively fixed, and the first material a and the welding seat 100 remain relatively fixed. Under the action of ultrasonic waves, the welding head 200 drives the second material b to move back and forth along the ultrasonic vibration direction F, so that the second material b moves back and forth along the ultrasonic vibration direction F relative to the first material a, and the first material a and the second material b generate heat by friction to achieve welding.

[0062] The first material a includes but is not limited to a transfer sheet, a tab, etc., and the second material b includes but is not limited to a transfer sheet, a tab, etc. The tab may be a positive tab or a negative tab. Optionally, the first material a is a transfer sheet, and the second material b is a tab.

[0063] The embodiment of the present application provides a welding seat 100, which can solve the problem of poor welding quality between the adapter and the tab caused by wear of the welding seat 100. The specific structure of the welding seat 100 is described in detail below with reference to the accompanying drawings.

[0064] Figure 2 A schematic diagram of the structure of the welding base 100 in some embodiments of the present application at a viewing angle; Figure 3 A cross-sectional view of the welding base 100 along the XZ plane of some embodiments of the present application; Figure 4 This is a schematic diagram of the welding seat 100 fixing the first material a in some embodiments of the present application.

[0065] Reference Figure 2 and Figure 3An embodiment of the present application provides a welding seat 100, which is used for ultrasonic welding. The welding seat 100 has a bearing surface 10, and the bearing surface 10 is provided with a plurality of grooves 40. The plurality of grooves 40 are arranged at intervals along a first direction X, and each groove 40 extends along a second direction Y, and the first direction X intersects with the second direction Y.

[0066] The bearing surface 10 is a surface for bearing the first material a. The bearing surface 10 and the first material a may be in surface contact; the bearing surface 10 and the first material a may be in line contact; or a portion of the bearing surface 10 may be in surface contact with the first material a, and another portion of the bearing surface 10 may be in line contact with the material.

[0067] The groove 40 is a structure lower than the bearing surface 10. The protruding structure between two adjacent grooves 40 can also be called a welding tooth 40a. The bearing surface 10 is the top surface of the welding tooth 40a. The groove 40 extends along the second direction Y, so that the welding tooth 40a also forms a strip structure extending along the second direction Y.

[0068] For one of the grooves 40, the groove width of the groove 40 may be equal everywhere. The groove 40 may also have an increasing trend or a decreasing trend along the second direction Y. Figure 2 In the embodiment, the groove width of the groove 40 is the same everywhere.

[0069] The shapes of the grooves 40 may be the same or different. The groove widths of the grooves 40 may be the same or different.

[0070] The plurality of grooves 40 may be arranged at equal intervals along the first direction X, or the plurality of grooves 40 may be arranged at increasingly smaller intervals or increasingly larger intervals along the second direction Y.

[0071] The groove 40 may be configured to extend along a straight line, or may be configured to extend along a curve, as long as the groove 40 has a tendency to extend along the second direction Y.

[0072] The number of the grooves 40 can be set as required, and the number of the grooves 40 can be two, three, four or even more.

[0073] For example, in Figure 2 In the embodiment, a plurality of grooves 40 are arranged at equal intervals, each groove 40 has the same groove width, and each groove 40 extends in a straight line along the second direction Y.

[0074] The first direction X may be parallel to the ultrasonic vibration direction F, or may be set at an angle to the ultrasonic vibration direction F, that is, the first direction X is inclined relative to the ultrasonic vibration direction F. It should be noted that the direction perpendicular to the ultrasonic vibration direction F is not the first direction X defined in the embodiment of the present application. The first direction X is set at an angle to the ultrasonic vibration direction F, and the angle may be 1°, 5°, 10°, 30°, etc.

[0075] like Figure 4 As shown, when the materials are welded, under the pressure of the welding head 200, the first material a undergoes plastic deformation and is partially embedded in the groove 40. When the second material b moves back and forth along the ultrasonic vibration direction F under the action of the welding head 200, it will drive the first material a, so that the first material a has a tendency to move back and forth along the ultrasonic vibration direction F, and the groove 40 can exert a reaction force on the first material a, thereby limiting the movement of the first material a along the second direction Y, thereby achieving the fixation of the first material a.

[0076] In this embodiment, a groove 40 is provided on the bearing surface 10, and a portion of the first material a is sunk into the groove 40. The groove 40 can not only limit the first material a to fix the first material a, but also the bearing surface 10 can have a larger contact area with the first material a. During use, the bearing surface 10 is not easy to wear, which is beneficial to improving the welding quality of the material.

[0077] It should be noted that, compared with the method in which the welding tooth 40a is a quadrangular pyramid tooth, in this embodiment, even if the groove 40 divides the bearing surface 10 into multiple areas, the groove 40 extends along the second direction Y, so that the welding tooth 40a is a strip structure, the sharpness of the top surface of the welding tooth 40a is alleviated, and the contact area between the bearing surface 10 and the first material a becomes larger. Therefore, the welding seat 100 is not easy to wear.

[0078] Reference Figure 2 In some embodiments, the first direction X is parallel to the ultrasonic vibration direction F.

[0079] Along the ultrasonic vibration direction F, the first material a can easily move relative to the welding seat 100. Therefore, the first direction X is parallel to the ultrasonic vibration direction F, and the arrangement direction of the multiple grooves 40 is parallel to the ultrasonic vibration direction F, which can effectively improve the limiting effect of the welding seat 100 on the first material a and alleviate the displacement of the first material a in the ultrasonic vibration direction F.

[0080] In some embodiments, the first direction X may not be perpendicular to the second direction Y, that is, the first direction X and the second direction Y are arranged at an angle. The angles of the first direction X and the second direction Y include but are not limited to 1°, 5°, 10°, 30°, etc.

[0081] In order to improve the fixing effect of the first material a, refer to Figure 2In some embodiments, the first direction X is perpendicular to the second direction Y. The first direction X is perpendicular to the second direction Y, so that the extension direction of the groove 40 is perpendicular to the ultrasonic vibration direction F, which can further improve the limiting effect of the welding seat 100 on the first material a and alleviate the displacement of the first material a in the ultrasonic vibration direction F.

[0082] The bearing surface 10 can be configured as a plane, a curved surface, etc. Optionally, the bearing surface 10 is a plane. The bearing surface 10 is a plane, which can further increase the contact area between the bearing surface 10 and the first material a, alleviate the wear of the bearing surface 10, and improve the welding quality of the material.

[0083] Reference Figure 3 and Figure 5 , Figure 5 The cross-sectional view of the welding seat 100 along the XZ plane of some other embodiments of the present application is shown in FIG. 1. In some embodiments, the groove 40 includes two first side surfaces 41 arranged opposite to each other along the first direction X, and the first side surfaces 41 are connected to the bearing surface 10 via a chamfered surface 50 .

[0084] It can be understood that the chamfered surface 50 is a transition surface between the first side surface 41 and the bearing surface 10. The chamfered surface 50 can be an inclined surface (such as Figure 3 As shown), the chamfered surface 50 may also be a curved surface (as shown Figure 5 Optionally, the chamfered surface 50 is a convex curved surface to alleviate the risk of cracking of the first material a caused by stress.

[0085] The chamfered surface 50 makes the notch of the groove 40 larger, thereby reducing the restriction of the notch of the groove 40 on the first material a. Under the action of the chamfered surface 50 , the first material a is easily embedded in the groove 40 .

[0086] Reference Figure 6 In this embodiment, the chamfered surface 50 is provided to enlarge the notch of the groove 40, thereby alleviating the adhesion between the first material a and the welding seat 100, facilitating the removal of the welded material from the welding seat 100, and reducing the possibility of damage to the material.

[0087] Reference Figure 6 , Figure 6 4 is a cross-sectional view of the welding seat 100 in the XZ plane of some other embodiments of the present application. In some embodiments, the groove 40 includes a bottom surface 42, and the bottom surface 42 is a curved surface that is concave in a direction away from the bearing surface 10. Optionally, the bottom surface 42 is an arc surface.

[0088] In this embodiment, the bottom surface 42 of the groove 40 is a curved surface that is concave in a direction away from the bearing surface 10 , which is convenient for processing by wire cutting, reduces the difficulty of preparing the welding seat 100 , and improves the production efficiency of the welding seat 100 .

[0089] Reference Figure 3In some other implementations, the bottom surface 42 may also be a plane. Optionally, the groove depth of the groove 40 is between 0.1 mm and 1.6 mm. For example, 0.1 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.6 mm or any value therebetween. The groove depth of the groove 40 refers to the distance from the bottom surface 42 to the bearing surface 10. The groove depth of the groove 40 is greater than 0.1 mm, so that the first material a can be partially accommodated in the groove 40 under the condition of plastic deformation, so that the welding seat 100 can limit the movement of the first material a; the groove depth of the groove 40 is less than 1.6 mm, and the groove 40 is not too deep, which can reduce the risk of the first material a being too much accommodated in the groove 40 under the condition of plastic deformation, making it difficult to remove the first material a from the welding seat 100. Therefore, the groove depth of the groove 40 is between 0.1 mm and 1.6 mm, which can not only limit the movement of the first material a, but also reduce the difficulty of removing the material from the welding seat 100.

[0090] Optionally, the groove width of the groove 40 is between 0.6 mm and 6 mm. For example, 0.6 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 5.5 mm, 6 mm or any value therebetween. The groove width of the groove 40 is the distance between the two first side surfaces 41. The groove width of the groove 40 is greater than 0.6 mm, so that the first material a can be easily accommodated in the groove 40 when plastic deformation occurs, so that the first material a is fixed by the base; the groove width of the groove 40 is less than 6 mm, the groove will not be too large, and the first material a will not easily fall out of the groove. Therefore, the groove width of the groove 40 is between 0.6 mm and 6 mm, and the welding seat 100 can better fix the first material a and prevent the material a from moving.

[0091] In some embodiments, the groove 40 includes a bottom surface 42 and two first side surfaces 41 oppositely disposed along the first direction X, and the first side surfaces 41 are tangent to the bottom surface 42 .

[0092] It can be understood that the first side surface 41 is tangent to the bottom surface 42 , there is no step at the connection between the first side surface 41 and the bottom surface 42 , and the first side surface 41 and the bottom surface 42 have a smooth transition.

[0093] In this embodiment, the first side surface 41 is tangent to the bottom surface 42 , which is beneficial to improving the consistency of the interface of the welding seat 100 .

[0094] Reference Figure 2 In some embodiments, the welding base 100 has a first end face 20 and a second end face 30 opposite to each other in the second direction Y, and the groove 40 extends to the first end face 20 and the second end face 30. That is, the groove 40 runs through two opposite ends of the welding base 100 in the second direction Y, so that the formation of the groove 40 is facilitated, thereby reducing the difficulty of preparing the welding base 100.

[0095] Figure 7It is a schematic structural diagram of the welding base 100 of some other embodiments of the present application at a viewing angle; Figure 8 It is a schematic structural diagram of the welding base 100 of some other embodiments of the present application at another viewing angle; Fig. 9 Schematic diagram of the structure of the welding seat 100 according to some other embodiments of the present application.

[0096] Reference Figure 7 , Figure 8 and Fig. 9 In some embodiments, the groove 40 includes two first side surfaces 41 arranged opposite to each other along the first direction X, the projection of the first side surfaces 41 in the third direction Z is a sawtooth line or a wavy line, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0097] In this embodiment, the projection of the first side surface 41 in the third direction Z is a sawtooth line or a wavy line, that is, the first side surface 41 is a non-planar surface, that is, the first side surface 41 is toothed. In this way, the contact area between the first side surface 41 and the first material a is larger, which can further improve the limiting effect of the welding seat 100 on the first material a and alleviate the displacement of the first material a relative to the welding seat 100.

[0098] Reference Figure 8 and Fig. 9 In some embodiments, the two first side surfaces 41 are arranged in parallel, and the projections of the two first side surfaces 41 in the third direction Z are parallel to each other.

[0099] Fig.10 Schematic diagram of the structure of the welding seat 100 of some other embodiments of the present application; Fig.11 Schematic diagram of the structure of welding seat 100 according to some other embodiments of the present application.

[0100] Reference Fig.10 and Fig.11 In some embodiments, the projections of the two first side surfaces 41 in the third direction Z are axially symmetrical, and the symmetry axes P of the two first side surfaces 41 are parallel to the second direction Y.

[0101] In some embodiments, the welding base 100 is made of tungsten steel or ceramic.

[0102] In this embodiment, the welding seat 100 made of tungsten steel or ceramic has high hardness and good wear resistance, which can extend the service life of the welding seat 100.

[0103] The embodiment of the present application also provides a welding device 1000, which includes a welding head 200 and a welding seat 100 of any of the above embodiments, the welding seat 100 and the welding head 200 are arranged opposite to each other along a third direction Z, the bearing surface 10 faces the welding head 200, and the third direction Z, the second direction Y and the first direction X are perpendicular to each other.

[0104] Among them, the projection of the welding surface of the welding device 1000 in the third direction Z covers at least two grooves 40, that is, the welding surface of the welding device 1000 corresponds to multiple grooves 40, so that under the pressure of the welding head 200, after the first material a undergoes plastic deformation, a partial area of ​​the first material a can be accommodated in the multiple grooves 40.

[0105] An embodiment of the present application further provides a battery manufacturing device, the battery manufacturing device comprising the welding seat 100 of any of the above embodiments or the welding device 1000 of any of the above embodiments.

[0106] Reference Figure 2 and Figure 3 The embodiment of the present application also provides a welding seat 100 for ultrasonic welding. The welding seat 100 is used to carry a first material a, and the first material a is a sheet. The welding seat 100 has a bearing surface 10, and the bearing surface 10 is provided with a plurality of grooves 40. The plurality of grooves 40 are arranged at intervals along a first direction X, and each groove 40 extends linearly along a second direction Y. The first direction X is perpendicular to the second direction Y, and the first direction X is parallel to the ultrasonic vibration direction F. The groove 40 includes two first side surfaces 41 arranged opposite to each other along the first direction X, and the first side surface 41 is connected to the bearing surface 10 by a chamfered surface 50. The material of the welding seat 100 is tungsten steel or ceramic. Optionally, the bottom surface 42 is a curved surface that is concave in the direction away from the bearing surface 10.

[0107] 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.

[0108] The above embodiments are only used to illustrate the technical solution of the present application and are not used 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 welding seat for ultrasonic welding, characterized in that: The welding seat has a bearing surface, and the bearing surface is provided with a plurality of grooves, the plurality of grooves are arranged at intervals along a first direction, each of the grooves extends along a second direction, and the first direction intersects with the second direction.

2. The welding seat according to claim 1, characterized in that: The first direction is parallel to the ultrasonic vibration direction.

3. The welding seat according to claim 2, characterized in that: The first direction is perpendicular to the second direction.

4. The welding seat according to claim 1, characterized in that: The bearing surface is a plane.

5. The welding base according to any one of claims 1 to 4, characterized in that: The groove includes two first side surfaces that are arranged opposite to each other along a first direction, and the first side surfaces are connected to the bearing surface via a chamfered surface.

6. The welding base according to any one of claims 1 to 4, characterized in that: The groove includes a bottom surface, and the bottom surface is a curved surface that is recessed in a direction away from the bearing surface.

7. The welding base according to any one of claims 1 to 4, characterized in that: The groove includes a bottom surface and two first side surfaces that are oppositely arranged along the first direction, and the first side surfaces are tangent to the bottom surface.

8. The welding base according to any one of claims 1 to 4, characterized in that: The welding seat has a first end surface and a second end surface opposite to each other in the second direction, and the groove extends to the first end surface and the second end surface.

9. The welding base according to any one of claims 1 to 4, characterized in that: The groove includes two first side surfaces arranged opposite to each other along a first direction, the projection of the first side surfaces in a third direction is a sawtooth line or a wavy line, and the first direction, the second direction and the third direction are perpendicular to each other.

10. The welding base according to any one of claims 1 to 4, characterized in that: The welding seat is made of tungsten steel or ceramic.

11. A welding device, characterized in that: include: Welding head; The welding seat described in any one of claims 1 to 10, wherein the welding seat and the welding head are arranged relative to each other along a third direction, the bearing surface faces the welding head, and the third direction, the second direction and the first direction are perpendicular to each other.

12. A battery manufacturing device, characterized in that: It comprises the welding seat described in any one of claims 1 to 10 or the welding device described in claim 11.

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