Connect auxiliary fixtures and cylindrical battery processing lines

Abstract

The present invention discloses a connection auxiliary jig and a cylindrical battery processing line, which relate to the field of connection technology. The connection auxiliary jig includes a jig body, a positioning groove is provided on the jig body, the positioning groove is used to accommodate the electrode plate, and the side wall of the positioning groove matches the electrode plate, and a positioning hole is provided on the bottom wall of the positioning groove, the positioning hole is opposite to the center hole of the electrode plate, and is used to accommodate the positioning column, and the positioning hole matches the positioning column, and a positioning protrusion is also convexly provided on the bottom wall of the positioning groove, the positioning protrusion is arranged around the opening of the positioning hole, and can abut against the edge of the center hole. The connection auxiliary jig and the cylindrical battery processing line have the characteristics of high positioning accuracy and the ability to reduce connection offset.

Description

Technical Field

[0001] The present invention relates to the field of connection technology, and in particular to a connection auxiliary fixture and a cylindrical battery processing line. Background Art

[0002] With the vigorous development of electric vehicles and energy storage industries, the research and development of large-capacity and long-life lithium-ion batteries has received widespread attention. At present, the low life of soft-pack batteries in power batteries can no longer meet the 10-year warranty standard of electric vehicles. The use of cylindrical batteries to replace traditional soft-pack batteries has become the main core issue now. Cylindrical batteries have been used in electric vehicles for their excellent safety performance, heat dissipation performance, and long life.

[0003] However, during the production and processing of cylindrical batteries, the welding of their structural parts requires that the surface of the weld seam should not have cracks, perforations, inclusions, pores, cold welding, or biased welding. The positioning column and its plate of the existing cylindrical battery need to be stamped before welding to complete the interference fit connection between the positioning column and the plate, and then welded. During the stamping process, the positioning column and the plate are prone to not fit in place, which makes the welding prone to biased welding.

[0004] In view of this, it is particularly important to develop and design a connection auxiliary fixture and cylindrical battery processing line that can solve the above-mentioned technical problems. Summary of the invention

[0005] The object of the present invention is to provide a connection auxiliary jig, which has the characteristics of high positioning accuracy and the ability to reduce connection deviation.

[0006] Another object of the present invention is to provide a cylindrical battery processing line, which has the characteristics of high positioning accuracy and the ability to reduce connection offset.

[0007] The present invention provides a technical solution:

[0008] In the first aspect, an embodiment of the present invention provides a connection auxiliary jig for assisting in controlling the position of the positioning post and the electrode plate of a cylindrical battery when the positioning post and the electrode plate are connected by interference fit, the connection auxiliary jig comprising a jig body; a positioning groove is provided on the jig body, the positioning groove is used to accommodate the electrode plate, and the side wall of the positioning groove matches the electrode plate, a positioning hole is provided on the bottom wall of the positioning groove, the positioning hole is opposite to the center hole of the electrode plate, and is used to accommodate the positioning post, and the positioning hole matches the positioning post; a positioning protrusion is also protruding from the bottom wall of the positioning groove, the positioning protrusion is arranged around the opening of the positioning hole, and can be abutted against the edge of the center hole.

[0009] In combination with the first aspect, in a first implementation of the first aspect, the positioning protrusion is arranged along an opening edge of the positioning hole, and an inner side wall of the positioning protrusion is connected to an inner wall of the positioning hole.

[0010] In combination with the first aspect and the above-mentioned implementation manner, in a second implementation manner of the first aspect, the positioning protrusion is a continuous annular protrusion and is arranged concentrically with the opening of the positioning hole.

[0011] In combination with the first aspect and its above-mentioned implementation, in a third implementation of the first aspect, there are multiple positioning protrusions, which are arranged at intervals around the opening of the positioning hole, and the circle formed by the multiple positioning protrusions is arranged concentrically with the opening of the positioning hole.

[0012] In combination with the first aspect and the above-mentioned implementation manner, in a fourth implementation manner of the first aspect, the height of the positioning protrusion ranges from 0.13 mm to 0.17 mm; the width of the positioning protrusion ranges from 0.3 mm to 0.7 mm.

[0013] In combination with the first aspect and the above-mentioned implementation manner, in a fifth implementation manner of the first aspect, a rounded corner is provided at one end of the inner side wall of the positioning protrusion away from the bottom wall of the positioning groove, and the rounded corner smoothly transitions with the inner wall of the positioning hole.

[0014] In combination with the first aspect and the above-mentioned implementation manner, in a sixth implementation manner of the first aspect, a clearance gap is provided at an opening edge of the positioning groove, and the clearance gap extends to the bottom wall of the positioning groove.

[0015] In combination with the first aspect and the above-mentioned implementation manner, in a seventh implementation manner of the first aspect, the connection auxiliary fixture also includes an ejection assembly, and the ejection assembly includes an ejection drive member; the ejection drive member is arranged in the positioning hole and is used to eject the positioning column.

[0016] In combination with the first aspect and the above-mentioned implementation manners, in an eighth implementation manner of the first aspect, the ejection assembly includes a plurality of ejection parts, and the plurality of ejection parts are evenly distributed on the bottom wall of the positioning groove and the positioning hole, and are all connected to the ejection driving member, and the ejection driving member can drive the plurality of ejection parts to eject the positioning column and the electrode plate at the same time.

[0017] In the second aspect, an embodiment of the present invention provides a cylindrical battery processing line, including a conveying mechanism and the connection auxiliary jig, the connection auxiliary jig is used to assist in controlling the position of the positioning column and the plate when the positioning column of the cylindrical battery and its plate are connected by interference fit, and the connection auxiliary jig includes a jig body; a positioning groove is provided on the jig body, the positioning groove is used to accommodate the plate, and the side wall of the positioning groove matches the plate, and a positioning hole is provided on the bottom wall of the positioning groove, the positioning hole is opposite to the center hole of the plate, and is used to accommodate the positioning column, and the positioning hole matches the positioning column; a positioning protrusion is also convexly provided on the bottom wall of the positioning groove, the positioning protrusion is arranged around the opening of the positioning hole, and can abut against the edge of the center hole. The conveying mechanism is arranged close to the jig body.

[0018] Compared with the prior art, the connection auxiliary fixture and cylindrical battery processing line provided by the embodiment of the present invention have the following beneficial effects:

[0019] The connection auxiliary jig includes a jig body, on which a positioning groove is provided, the positioning groove is used to accommodate the electrode plate, and the side wall of the positioning groove matches the electrode plate to limit the position of the electrode plate, and a positioning hole is also provided on the bottom wall of the positioning groove, the positioning hole is opposite to the center hole of the electrode plate, and is used to accommodate the positioning column, and the positioning hole matches the positioning column to limit the position of the positioning column so that the positioning column can accurately correspond to the center hole. In addition, a positioning protrusion is also convexly provided on the bottom wall of the positioning groove, the positioning protrusion is arranged around the opening of the positioning hole, and can be abutted against the edge of the center hole. In other words, the positioning protrusion can be opposite to the edge of the center hole, and the circle formed by it is roughly the same size as the center hole.

[0020] In this way, the positioning groove helps control the position of the electrode plate, and the positioning hole helps control the position of the positioning column. In addition, the positioning protrusion is supported on the edge of the center hole to limit the micro-deformation of the edge of the center hole when the positioning column is connected to the center hole by interference fit, so as to avoid a large deviation in the position of the positioning column due to inaccurate action of the stamping mechanism or deviation in the size of the center hole.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the structure of a connection auxiliary fixture provided in an embodiment of the present invention applied to a cylindrical battery processing line.

[0024] Figure 2 A schematic diagram of the structure of a connection auxiliary fixture provided in an embodiment of the present invention.

[0025] Figure 3 A schematic diagram of the cross-sectional structure of a connection auxiliary fixture provided in an embodiment of the present invention.

[0026] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point III in the middle.

[0027] Figure 5 A schematic cross-sectional view of another structure of the connection auxiliary fixture provided by an embodiment of the present invention.

[0028] Figure 6 A schematic structural diagram of a connection auxiliary fixture provided by an embodiment of the present invention having an ejection assembly.

[0029] Icons: 100-cylindrical battery processing line; 20-conveyor mechanism; 30-stamping mechanism; 10-connection auxiliary fixture; 12-fixture body; 121-positioning groove; 122-positioning hole; 123-clearance gap; 125-positioning protrusion; 126-fixing groove; 15-ejection assembly; 151-ejection drive member; 152-ejection member; 910-plate; 912-center hole; 920-positioning column. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship usually placed when the invention product is used, or the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 of the present invention. The terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. The terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. Without more constraints, an element defined by the phrase "comprising a..." does not exclude the existence of other identical elements in the process, method, article or apparatus comprising the element.

[0032] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical 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 those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] Example:

[0035] See also Figure 1 , Figure 1 A structural schematic diagram of a connection auxiliary fixture 10 provided in an embodiment of the present invention applied to a cylindrical battery processing line 100.

[0036] The embodiment of the present invention provides a connection auxiliary fixture 10, which is used for connecting the plate 910 and the positioning column 920 of a cylindrical battery (not shown). The connection auxiliary fixture 10 has the characteristics of high positioning accuracy and can reduce connection deviation. The connection auxiliary fixture 10 can be applied to stamping and welding devices and processing lines, especially cylindrical battery processing lines 100. Of course, the auxiliary fixture can also be used independently.

[0037] Among them, taking the application of the connection auxiliary fixture 10 to the cylindrical battery processing line 100 as an example, the cylindrical battery processing line 100 includes a connection auxiliary fixture 10, which assists in controlling the position of the electrode plate 910 and the positioning column 920 through the connection auxiliary fixture 10, so that the electrode plate 910 and the positioning column 920 can complete a high-precision interference fit connection. Of course, the cylindrical battery processing line 100 can also include a conveying mechanism 20, which is arranged close to the connection auxiliary fixture 10 and is used to convey the electrode plate 910 and the positioning column 920 to the connection auxiliary fixture 10, and can also be conveyed outward by the connection auxiliary fixture 10. The electrode plate 910 and the positioning column 920 that have completed the interference fit connection, the conveying mechanism 20 can be a feeding mechanism such as a transmission belt and a straight vibration track. In addition, the cylindrical battery can also include a stamping mechanism 30, which is arranged above the connection auxiliary fixture 10 and is used to stamp the positioning column 920 and the electrode plate 910.

[0038] Since the cylindrical battery processing line 100 adopts the connection auxiliary fixture 10 provided by the embodiment of the present invention, the cylindrical battery processing line 100 also has the characteristics of high positioning accuracy and the ability to reduce connection deviation.

[0039] The structural composition, working principle and beneficial effects of the connection auxiliary fixture 10 provided in an embodiment of the present invention will be specifically introduced below.

[0040] See also Figure 2 and Figure 3 , Figure 2 A schematic diagram of the structure of a connection auxiliary fixture 10 provided in an embodiment of the present invention. Figure 3 This is a schematic cross-sectional structure diagram of a connection auxiliary fixture 10 provided in an embodiment of the present invention.

[0041] The connection auxiliary jig 10 is used to assist in controlling the position of the positioning column 920 and the plate 910 when the positioning column 920 of the cylindrical battery and its plate 910 are connected by interference fit, so as to reduce the displacement of the positioning column 920 and the plate 910 during the interference fit connection and improve the connection accuracy. The connection auxiliary jig 10 includes a jig body 12 for carrying the plate 910 and the positioning column 920, and the conveying mechanism 20 is arranged near the connection jig body 12, and the stamping mechanism 30 is arranged above the jig body 12.

[0042] Specifically, a positioning groove 121 is provided on the fixture body 12, and the positioning groove 121 is used to accommodate the electrode plate 910, and the side wall of the positioning groove 121 matches the electrode plate 910 to limit the position of the electrode plate 910, and a positioning hole 122 is also provided on the bottom wall of the positioning groove 121, and the positioning hole 122 is opposite to the center hole 912 of the electrode plate 910 and is used to accommodate the positioning column 920, and the positioning hole 122 matches the positioning column 920 to limit the position of the positioning column 920 so that the positioning column 920 can accurately correspond to the center hole 912. In addition, a positioning protrusion 125 is convexly provided on the bottom wall of the positioning groove 121, and the positioning protrusion 125 is arranged around the opening of the positioning hole 122 and can be abutted against the edge of the center hole 912. In other words, the positioning protrusion 125 can be opposite to the edge of the center hole 912, and the circle formed by it is roughly the same size as the center hole 912.

[0043] In this way, the positioning groove 121 assists in controlling the position of the electrode plate 910, and the positioning hole 122 assists in controlling the position of the positioning column 920. In addition, the positioning protrusion 125 is also used to abut against the edge of the center hole 912 to limit the slight deformation of the edge of the center hole 912 when the positioning column 920 is connected to the center hole 912 by interference fit, so as to avoid a large deviation in the position of the positioning column 920 due to inaccurate action of the stamping mechanism 30 or size deviation of the center hole 912.

[0044] It should be noted that when the pole plate 910 and the positioning column 920 are connected by interference fit, a positioning protrusion 125 is provided to abut against the edge of the center hole 912 of the pole plate 910 to reduce the lateral displacement of the pole plate 910 during stamping, and the upward and downward displacement of the positioning column 920 due to uncontrolled deformation. Compared with the prior art, the positioning protrusion 125 limits the deformation near the center hole 912 within the positioning protrusion 125, so that the deformation of the positioning column 920 and the pole plate 910 during interference fit connection is controlled, thereby improving the accuracy of connecting the pole plate 910 and the positioning column 920.

[0045] Furthermore, a fixing groove 126 is provided on the jig body 12 , and the fixing groove 126 is a bar-shaped hole to facilitate fixing the jig body 12 .

[0046] See also Figure 4 , Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point III in the middle.

[0047] The positioning protrusion 125 is arranged along the opening edge of the positioning hole 122, and the inner side wall of the positioning protrusion 125 is connected to the inner wall of the positioning hole 122. In other words, the positioning protrusion 125 can be formed for the side wall of the positioning hole 122 in the opening direction of the positioning groove 121. In this way, the position where the positioning protrusion 125 abuts against the edge of the center hole 912 is the position close to the outer edge of the positioning column 920, further limiting the deformation area near the center hole 912 of the electrode plate 910.

[0048] It should be noted that, in the present embodiment, the positioning protrusion 125 is continuously arranged around the opening of the positioning hole 122, and is arranged concentrically with the opening of the positioning hole 122, or in other words, the positioning protrusion 125 is an annular protrusion sleeved on the positioning hole 122, so as to limit the deformation area near the center hole 912 of the electrode plate 910 to a circle around the center hole 912, so that the stress is more uniform. In other embodiments, there can be multiple positioning protrusions 125, or the number of positioning protrusions 125 is multiple, and multiple positioning protrusions 125 are arranged around the opening of the positioning hole 122 at intervals, and the circle formed by the multiple positioning protrusions 125 is arranged concentrically with the opening of the positioning hole 122, so that the friction force of the positioning protrusions 125 arranged at intervals when they are pressed against the edge of the center hole 912 is greater, and it is not easy to deviate left and right, and the deformation area near the center hole 912 of the electrode plate 910 is limited to a certain extent.

[0049] Furthermore, the height of the positioning protrusion 125 ranges from 0.13 mm to 0.17 mm, or in other words, the distance between the end of the positioning protrusion 125 away from the bottom wall of the positioning groove 121 and the bottom wall of the positioning groove 121 ranges from 0.13 mm to 0.17 mm, especially 0.15 mm. Such a height setting allows the positioning protrusion 125 to lift the electrode 910 to a certain height without making the electrode 910 too far away from the bottom wall of the positioning groove 121, so as to limit the deformation of the electrode 910.

[0050] In addition, the width of the positioning protrusion 125 is in the range of 0.3 mm to 0.7 mm. In other words, the width of the cross section of the positioning protrusion 125 is in the range of 0.3 mm to 0.7 mm, especially 0.5 mm, so as to reduce the area of ​​the positioning protrusion 125 against the electrode plate 910 while maintaining the strength of the positioning protrusion 125, so as to reduce the interference of the positioning protrusion 125 in contact with the electrode plate 910 on the stress distribution of the edge of the center hole 912 when the positioning column 920 is connected to the center hole 912 by interference fit.

[0051] Furthermore, a rounded corner is provided at one end of the inner side wall of the positioning protrusion 125 away from the bottom wall of the positioning groove 121, and the rounded corner smoothly transitions with the inner wall of the positioning hole 122, further reducing the area of ​​the positioning protrusion 125 against the electrode plate 910, while facilitating the positioning column 920 to smoothly enter the positioning hole 122.

[0052] It should be noted that a chamfer is provided at one end of the outer wall of the positioning protrusion 125 away from the bottom wall of the positioning groove 121, further reducing the area where the positioning protrusion 125 abuts against the electrode plate 910, and making the outer edge of the abutting area where the positioning protrusion 125 abuts against the edge of the center hole 912 clearly defined, further promoting a more uniform distribution of stress.

[0053] See also Figure 5 , Figure 5 A schematic cross-sectional view of another structure of the connection auxiliary fixture 10 provided in an embodiment of the present invention.

[0054] A clearance notch 123 may also be provided at the opening edge of the positioning groove 121, and the clearance notch 123 extends to the bottom wall of the positioning groove 121, or in other words, extends from the clearance notch 123 to the bottom wall of the positioning groove 121, so that after the stamping is completed, it is convenient to remove the electrode 910 and the positioning column 920 through the positioning notch 123.

[0055] See also Figure 6 , Figure 6 The connection auxiliary fixture 10 provided in the embodiment of the present invention has a schematic structural diagram of an ejection component 15 .

[0056] The connection auxiliary fixture 10 may further include an ejection assembly 15 , which includes an ejection driving member 151 . The ejection driving member 151 is disposed in the positioning hole 122 and is used to eject the positioning column 920 to facilitate the removal of the electrode plate 910 and the positioning column 920 .

[0057] Furthermore, the ejection assembly 15 can also include a plurality of ejection members 152, which are evenly distributed on the bottom wall of the positioning groove 121 and the positioning hole 122, and are all connected to the ejection driving member 151. The ejection driving member 151 can drive the plurality of ejection members 152 to eject the positioning column 920 and the electrode plate 910 at the same time, so as to facilitate the removal of the electrode plate 910 and the positioning column 920 and reduce the impact on the connection between the positioning column 920 and the electrode plate 910.

[0058] The working principle of the connection auxiliary fixture 10 provided in the embodiment of the present invention is:

[0059] The connection auxiliary fixture 10 includes a fixture body 12, on which a positioning groove 121 is provided, the positioning groove 121 is used to accommodate the electrode 910, and the side wall of the positioning groove 121 matches the electrode 910 to limit the position of the electrode 910, and a positioning hole 122 is also provided on the bottom wall of the positioning groove 121, the positioning hole 122 is opposite to the central hole 912 of the electrode 910, and is used to accommodate the positioning column 920, and the positioning hole 122 It matches with the positioning column 920 to limit the position of the positioning column 920 so that the positioning column 920 can accurately correspond to the center hole 912. In addition, a positioning protrusion 125 is also protruded on the bottom wall of the positioning groove 121. The positioning protrusion 125 is arranged around the opening of the positioning hole 122 and can be supported on the edge of the center hole 912. In other words, the positioning protrusion 125 can be opposite to the edge of the center hole 912, and the circle formed by it is roughly the same size as the center hole 912.

[0060] In this way, the positioning groove 121 assists in controlling the position of the electrode plate 910, and the positioning hole 122 assists in controlling the position of the positioning column 920. In addition, the positioning protrusion 125 is also used to abut against the edge of the center hole 912 to limit the slight deformation of the edge of the center hole 912 when the positioning column 920 is connected to the center hole 912 by interference fit, so as to avoid a large deviation in the position of the positioning column 920 due to inaccurate action of the stamping mechanism 30 or size deviation of the center hole 912.

[0061] In summary:

[0062] The embodiment of the present invention provides a connection auxiliary jig 10, which has the characteristics of high positioning accuracy and the ability to reduce connection deviation.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the features in the above embodiments can be combined with each other without conflict, and the present invention can also have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. In addition, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A connection auxiliary fixture, used to assist in controlling the position of the positioning post and the plate when the positioning post of a cylindrical battery and its plate are connected by interference fit, characterized in that: The connection auxiliary jig comprises a jig body; The fixture body is provided with a positioning groove, the positioning groove is used to accommodate the electrode plate, and the side wall of the positioning groove matches the electrode plate, and the bottom wall of the positioning groove is provided with a positioning hole, the positioning hole is opposite to the central hole of the electrode plate and is used to accommodate the positioning column, and the positioning hole matches the positioning column; A positioning protrusion is also convexly provided on the bottom wall of the positioning groove, and the positioning protrusion is arranged around the opening of the positioning hole and can be abutted against the edge of the center hole; The positioning protrusion is arranged along the opening edge of the positioning hole, and the inner side wall of the positioning protrusion is connected to the inner wall of the positioning hole; The positioning protrusion is a continuous annular protrusion and is arranged concentrically with the opening of the positioning hole.

2. The connection auxiliary fixture according to claim 1, characterized in that: There are a plurality of positioning protrusions, which are arranged at intervals around the opening of the positioning hole, and a circle formed by the plurality of positioning protrusions is arranged concentrically with the opening of the positioning hole.

3. The connection auxiliary fixture according to claim 1, characterized in that: The height of the positioning protrusion ranges from 0.13 mm to 0.17 mm; The width of the positioning protrusion ranges from 0.3 mm to 0.7 mm.

4. The connection auxiliary fixture according to claim 1, characterized in that: An end of the inner side wall of the positioning protrusion away from the bottom wall of the positioning groove is provided with a rounded corner, and the rounded corner smoothly transitions to the inner wall of the positioning hole.

5. The connection auxiliary fixture according to claim 1, characterized in that: A clearance notch is formed at the opening edge of the positioning groove, and the clearance notch extends to the bottom wall of the positioning groove.

6. The connection auxiliary fixture according to claim 4, characterized in that: The connection auxiliary fixture further includes an ejection assembly, and the ejection assembly includes an ejection driving member; The ejection driving member is arranged in the positioning hole and is used for ejecting the positioning column.

7. The connection auxiliary fixture according to claim 6, characterized in that: The ejection assembly includes a plurality of ejection members, which are evenly distributed on the bottom wall of the positioning groove and the positioning hole and are all connected to the ejection driving member. The ejection driving member can drive the plurality of ejection members to eject the positioning column and the electrode plate at the same time.

8. A cylindrical battery processing line, characterized in that: It comprises a conveying mechanism and a connection auxiliary jig as described in any one of claims 1 to 7, wherein the conveying mechanism is arranged close to the jig body.

Images