Welding equipment for cylindrical battery

Abstract

The utility model relates to the technical field of batteries, in particular to welding equipment for a cylindrical battery, the welding equipment comprises a supporting cup, a supporting clamp, a sleeving tower and a welding tower, a first bearing part is arranged in the supporting cup, and the first bearing part is used for bearing a battery cell; an aligning part and a second bearing part are arranged on the supporting clamp, the second bearing part is used for bearing a flow collecting disc, and the aligning part is used for aligning when the supporting cup is sleeved with the aligning part; the sleeving tower is used for sleeving the supporting cup, the battery cell and the supporting clamp to form a middle assembly and outputting the middle assembly; the welding tower is used for receiving the middle assembly and transferring the current collecting disc to the second bearing part, and the welding tower is used for welding the battery cell and the current collecting disc. And the alignment precision during welding of the battery cell and the collector plate can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a welding device for cylindrical batteries. Background Art

[0002] A battery device is often provided in an electric vehicle, and the battery device is used to provide power to the electric vehicle. A plurality of batteries are provided in the battery device, and the battery may be a cylindrical battery. The cylindrical battery includes a shell, a pole, a battery cell and a collector plate, wherein the pole is provided in the shell, and the pole is provided in the shell, and the collector plate connects the battery cell and the pole. In order to ensure the performance of the cylindrical battery, the collector plate and the battery cell are welded with the ear, and the alignment accuracy of the collector plate and the battery cell needs to be ensured when the collector plate and the battery cell are welded.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] The purpose of the present disclosure is to provide a welding device for cylindrical batteries, thereby ensuring the alignment accuracy of cylindrical battery welding at least to a certain extent.

[0005] The present disclosure provides a welding device for a cylindrical battery, the welding device comprising:

[0006] A support cup, wherein a first bearing portion is provided in the support cup, and the first bearing portion is used to bear the battery cell;

[0007] A supporting fixture, wherein the supporting fixture is provided with an alignment portion and a second bearing portion, wherein the second bearing portion is used to bear the current collecting plate, and the alignment portion is used to align with the supporting cup when being sheathed;

[0008] A sheathing tower, which is used to sheath the support cup, the battery cell and the support fixture to form an intermediate component, and output the intermediate component;

[0009] A welding tower is used to receive the intermediate assembly and transfer the current collecting plate to the second bearing portion, and the welding tower welds the battery cell and the current collecting plate.

[0010] The welding equipment for cylindrical batteries provided by the embodiments of the present disclosure includes a support cup, a support clamp, a fitting tower and a welding tower. The support cup is provided with a first bearing part for bearing a battery cell, the support clamp is provided with an alignment part and a second bearing part, the alignment part is used for alignment when fitting with the support cup, the second bearing part carries a collecting plate, the fitting tower is used for fitting the support cup, the battery cell and the support clamp to form an intermediate component, the welding tower receives the intermediate component and welds the battery cell and the collecting plate, and the alignment of the battery cell in the support cup and the collecting plate on the support clamp is achieved by the support clamp, thereby improving the alignment accuracy during battery welding and thereby improving the quality of the battery.

[0011] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0013] Figure 1 A schematic diagram of the structure of a cylindrical battery provided by an exemplary embodiment of the present disclosure;

[0014] Figure 2 A schematic structural diagram of a support cup provided by an exemplary embodiment of the present disclosure;

[0015] Figure 3 A schematic diagram of the structure of another support cup provided by an exemplary embodiment of the present disclosure;

[0016] Figure 4 A schematic structural diagram of a welding device for cylindrical batteries provided by an exemplary embodiment of the present disclosure;

[0017] Figure 5 A structural schematic diagram of a support fixture provided for an exemplary embodiment of the present disclosure;

[0018] Figure 6 A schematic structural diagram of another supporting fixture provided for an exemplary embodiment of the present disclosure;

[0019] Figure 7 A schematic diagram of an open support fixture provided for an exemplary embodiment of the present disclosure;

[0020] Figure 8 A schematic structural diagram of a carrier provided for an exemplary embodiment of the present disclosure;

[0021] Fig. 9A partial schematic diagram of a first carrier transmission line provided for an exemplary embodiment of the present disclosure;

[0022] Fig.10 A structural schematic diagram of a welding device provided for an exemplary embodiment of the present disclosure;

[0023] Fig.11 A structural schematic diagram of a pressure plate assembly provided for an exemplary embodiment of the present disclosure;

[0024] Fig.12 A flow chart of a welding method provided for an exemplary embodiment of the present disclosure.

[0025] Description of reference numerals:

[0026] 01. Cell; 02. Shell; 021. Shell body; 022. Cover plate; 03. Collector plate; 031. First collector; 04. Pole; 10. Support cup; 101. First bearing part; 11. Cup body; 111. First positioning section; 12. Clamping piece; 121. Clamping wheel; 122. Annular spring; 13. Ejector pin; 14. Support plate; 15. Elastic piece; 16. Highly compatible block; 20. Support fixture; 201. First clamping part; 202. Second clamping part; 21. Alignment part; 22. Second bearing part; 221. First bearing section; 222. Second bearing section; 30. Carrier; 301. Fourth bearing part; 31. Carrier column; 311. Second positioning section; 40. Fit Tower; 41, fitting arm; 50, welding tower; 51, bracket; 52, support plate assembly; 521, support plate; 522, support cup clamp; 53, first clamp; 54, second clamp; 55, pressure plate assembly; 551, positioning plate; 552, first pressure plate; 553, second pressure plate; 56, first height adjustment assembly; 561, first height adjustment cam; 562, first height adjustment spring; 563, first connecting rod; 564, first support; 57, assembly; 571, height adjuster; 572, pressure sensor; 573, second height adjustment cam; 574, second connecting rod; 60, test tower; 81, first carrier transmission line; 82, second carrier transmission line; 83, transfer planetary gear. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the exemplary embodiments of the present disclosure to clearly and completely describe the technical solutions in the exemplary embodiments of the present disclosure. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the present disclosure. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present disclosure.

[0028] In the description of the present disclosure, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0029] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0030] Further, in the description of the present disclosure, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present disclosure are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present disclosure. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", "inner", "outer", but also can be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0031] like Figure 1 As shown, the cylindrical battery includes a shell 02, a battery cell 01, a pole 04 and a current collecting plate 03. The shell 02 has a receiving cavity, the battery cell 01 and the current collecting plate 03 are arranged in the receiving cavity, and the pole 04 is arranged in the shell 02. The pole 04 serves as one electrode output end of the cylindrical battery, and the shell 02 serves as another electrode output end of the battery. The current collecting plate 03 is connected to the pole 04 and the shell 02 respectively, and the current collecting plate 03 is connected to the battery cell 01.

[0032] The shell 02 includes a shell body 021 and a cover plate 022. The shell body 021 is a hollow columnar structure with one end open. The cover plate 022 is a disc structure. The cover plate 022 is sealed at the open end of the shell body 021. The cover plate 022 and the shell body 021 are welded. The pole 04 can be arranged on the cover plate 022, or the pole 04 is arranged at the opposite end of the shell body 021 and the cover plate 022.

[0033] The battery cell 01 includes a battery cell body, a first pole ear and a second pole ear, and the first pole ear and the second pole ear are arranged in the battery cell body. The battery cell body is cylindrical, and has a through hole in the battery cell body. For example, the first pole ear and the second pole ear are arranged at the same end of the battery cell body. On this basis, the current collecting plate 03 includes a first current collecting part 031, a second current collecting part 0.32 and an insulating part, and the insulating part is arranged between the first current collecting part 031 and the second current collecting part to achieve insulation between the first current collecting part 031 and the second current collecting part. The first current collecting part 031 is welded to the first pole ear, and the second current collecting part is welded to the second pole ear.

[0034] It can be understood that the first pole ear and the second pole ear can also be located at the two ends of the battery body respectively. On this basis, the battery can include a first current collecting plate and a second current collecting plate, and the first current collecting plate and the second current collecting plate are respectively arranged at the two ends of the battery cell 01, the first current collecting plate and the first pole ear are welded, and the second current collecting plate and the second pole ear are welded.

[0035] The exemplary embodiment of the present disclosure first provides a welding device for cylindrical batteries, such as Figure 2-Figure 5 As shown, the welding equipment includes a support cup 10, a support fixture 20, a fitting tower 40 and a welding tower 50. The support cup 10 is provided with a first bearing portion 101, and the first bearing portion 101 is used to bear the battery cell 01; the support fixture 20 is provided with an alignment portion 21 and a second bearing portion 22, and the second bearing portion 22 is used to bear the collecting plate 03, and the alignment portion 21 is used to align when fitting with the support cup; the fitting tower 40 is used to fit the support cup, the battery cell 01 and the support fixture 20 to form an intermediate component, and output the intermediate component; the welding tower 50 is used to receive the intermediate component and transfer the collecting plate 03 to the second bearing portion 22, and the welding tower 50 welds the battery cell 01 and the collecting plate 03.

[0036] The cylindrical battery welding equipment provided by the embodiment of the present disclosure includes a support cup 10, a support fixture 20, a fitting tower 40 and a welding tower 50. The support cup 10 is provided with a first bearing part 101 for carrying a battery cell 01. The support fixture 20 is provided with a positioning part 21 and a second bearing part 22. The positioning part 21 is used for positioning when fitting with the support cup 10. The second bearing part 22 carries a current collecting plate 03. The fitting tower 40 is used to fit the support cup 10, the battery cell 01 and the support fixture 20 to form an intermediate component. The welding tower 50 receives the intermediate component and welds the battery cell 01 and the current collecting plate 03. The battery cell 01 in the support cup and the current collecting plate 03 on the support fixture 20 are aligned by the support fixture 20, thereby improving the alignment accuracy during battery welding and thus improving the quality of the battery. In addition, the cooperation of the fitting tower and the welding tower can improve the welding stability, facilitate multi-station high-speed continuous processing, and improve the battery welding efficiency.

[0037] Furthermore, the cylindrical battery welding equipment provided in the embodiment of the present disclosure may also include a carrier 30 and a test tower 60. The carrier 30 is provided with a fourth bearing portion 301, and the fourth bearing portion 301 is used to bear the current collecting plate 03. The welding tower 50 receives the carrier 30 bearing the current collecting plate 03, and installs the current collecting plate 03 on the carrier 30 to the second bearing portion 22 of the supporting fixture 20. The test tower 60 receives the battery output by the welding tower 50, and the test tower 60 is used to test the insulation withstand voltage of the battery to determine whether the welding of the battery is qualified.

[0038] The following is a detailed description of each part of the welding device provided in the embodiment of the present disclosure:

[0039] The cup 10 is provided with a first bearing portion 101, and the first bearing portion 101 is used to bear the battery cell 01. The cup 10 includes a cup body 11 and a clamping member 12. The cup body 11 is provided with a first depression with an opening, and the first depression forms the first bearing portion 101. The first depression is cylindrical, and the depth of the first depression is less than the height of the battery cell 01. The depth of the first depression is the dimension of the first depression in the direction of the axis of the first depression, and the height of the battery cell 01 is the dimension of the first depression in the direction of the axis of the first depression. By setting the depth of the first depression of the cup 10 to be less than the height of the battery cell, it is achieved that the upper part of the battery cell has a space that can fit the support fixture 20, and the height of the support fixture 20 also has a minimum value, so that it can fit more stably on the battery cell to ensure concentricity.

[0040] The cup body 11 is cylindrical or approximately cylindrical, and the first bearing portion 101 is a cylindrical hole on the cup body 11, which is used to bear the battery cell 01. The diameter of the cylindrical hole on the cup body 11 matches the diameter of the battery cell 01, so that the battery cell 01 can be stably accommodated in the cup 10.

[0041] The clamping member 12 includes a clamping wheel 121, which is arranged at the open end of the cup body 11. The friction coefficient between the clamping member 12 and the battery cell 01 is greater than or equal to 0.1. The clamping wheel 121 is used to prevent the battery cell 01 from rotating in the cup 10. A plurality of clamping wheels 121 may be arranged on the cup body 11, and the plurality of clamping wheels 121 are distributed along the circumference of the cup body 11. For example, four clamping wheels 121 are arranged on the cup body 11, and the four clamping wheels 121 are evenly distributed along the circumference of the cup body 11.

[0042] In order to further improve the stability of the battery cell 01 on the support cup 10, the clamping member 12 may further include an annular spring 122, the annular spring 122 surrounds the cup body 11, and the annular spring 122 is located at one end of the opening of the cup body 11, and the annular spring 122 is passed through the clamping wheel 121. The annular spring 122 clamps the battery cell 01 when the battery cell 01 enters the first recess, and the annular spring 122 loosens the battery cell 01 when the battery cell 01 moves out of the first recess.

[0043] The surface of the clamping wheel 121 is provided with an elastic layer. In one embodiment, the clamping wheel 121 includes a wheel body and an elastic layer, and the wheel body can be made of a metal material, or the wheel body is made of hard plastic. The elastic layer covers the surface of the wheel body, and the elastic layer can be a rubber layer or a silicone layer. In another embodiment, the clamping wheel 121 is made of an elastic material as a whole, for example, the clamping wheel 121 is made of rubber or silicone. The provision of the elastic layer on the surface of the clamping wheel 121 can ensure friction while not scratching the diaphragm of the battery cell 01.

[0044] The annular spring 122 is inserted into the clamping wheel 121. For example, a mounting groove is provided on the cup body 11, and the annular spring 122 is provided in the mounting groove. When the battery cell 01 extends into the support cup 10, friction occurs between the battery cell 01 and the clamping wheel 121, the clamping wheel 121 rotates, the clamping wheel 121 drives the annular spring 122, and the annular spring 122 is tightened, thereby clamping the battery cell 01. When the battery cell 01 exits the support cup 10, friction occurs between the battery cell 01 and the clamping wheel 121, the clamping wheel 121 rotates, the clamping wheel 121 drives the annular spring 122, and the annular spring 122 is relaxed, thereby relaxing the battery cell 01.

[0045] Furthermore, the cup 10 may also include an ejector pin 13, an elastic member 15, a support plate 14 and a height compatible block 16. The ejector pin 13 is disposed in the first depression and is disposed along the axis of the first depression. The battery cell 01 is sleeved on the ejector pin 13. The elastic member 15 is respectively connected to the cup body 11 and the ejector pin 13 so that the ejector pin 13 can move along the axis of the first depression. The support plate 14 is disposed in the first depression and is used to support the battery cell 01. The height compatible block 16 is disposed at one end of the support plate 14 away from the opening and supports the support plate 14 so that the cup 10 can be used for batteries 01 of different heights.

[0046] A blind hole is formed in the cup body 11, and a support plate 14, an elastic member 15 and a height compatible block 16 are arranged in the blind hole. The height compatible block 16, the elastic member 15 and the support plate 14 are arranged in sequence. The support cup 10 can be configured with a plurality of height compatible blocks 16 of different heights, and the support cup 10 can adapt to battery cells 01 (battery cells 01) of different heights by replacing the height compatible blocks 16. The support plate 14 is arranged at the top of the height compatible block 16, and a concave hole is arranged in the height compatible block 16. The elastic member 15 is arranged in the concave hole, and the ejector pin 13 is passed through the support plate 14. The ejector pin 13 and the elastic member 15 are connected, and the ejector pin 13 and the support plate 14 and the height compatible block 16 are elastic through the elastic member 15. That is, the elastic member 15 drives the battery cell 01 so that the battery cell 01 and the collecting plate 03 are in close contact.

[0047] The cup body 11 has a magnetic part, which is used to adsorb the cup 10 to the transport device or to the preset position when the cup 10 is transported or the cup 10 is in the preset position. The magnetic part can be a magnet or an iron part.

[0048] The cup body 11 has a first positioning section 111, and the outer contour of the orthographic projection area of ​​the first positioning section 111 on the first plane is a rectangle, and the first plane is perpendicular to the axis of the first depression. That is, the upper section of the cup body 11 is square. Since the cup body 11 is a cylindrical structure as a whole, the cylindrical cup body 11 is easy to rotate during transportation and clamping, which is not conducive to the positioning of the battery cell 01. By setting the first positioning section 111 on the cup body 11 to position the cup body 11, the problem of the rotation of the support cup 10 affecting welding is avoided, thereby improving the welding quality and welding accuracy.

[0049] like Figure 5 , Figure 6 and Figure 7 As shown, the support fixture 20 is provided with an alignment portion 21 and a second bearing portion 22, the second bearing portion 22 is used to bear the current collecting plate 03, and the alignment portion 21 is used to align with the support cup. For example, the support fixture 20 has a first through hole, the first through hole includes an alignment section and a first bearing section 221, the alignment section forms the alignment portion 21, the alignment section is sleeved on the battery cell 01, the first bearing section 221 is located at one end of the alignment section away from the support cup 10, and the first bearing section 221 forms the second bearing portion 22.

[0050] A positioning protrusion is provided on the inner wall of the alignment section, and the positioning protrusion is located at one end of the alignment section close to the first bearing section 221. That is, the positioning protrusion divides the first through hole into the alignment section and the first bearing section 221. The alignment section is cylindrical, and the diameter of the alignment section matches the diameter of the battery cell 01 (the diameter of the alignment section is the same as the diameter of the battery cell 01 or the diameter of the alignment section is slightly larger than the diameter of the battery cell 01).

[0051] Furthermore, after the current collecting plate 03 and the battery cell 01 are welded, it is necessary to weld the current collecting plate 03 and the cover plate 022 (or the pole 04 installed on the cover plate 022). In order to align the battery cell 01, the current collecting plate 03 and the cover plate 022, a third bearing part is also provided on the support clamp 20. The third bearing part is arranged on the side of the second bearing part 22 away from the alignment part 21, and the third bearing part is used to support the cover plate 022.

[0052] The first through hole further has a second bearing section 222, which is located on the side of the first bearing section 221 away from the alignment section, and the diameter of the second bearing section 222 is greater than the diameter of the first bearing section 221. That is, a step structure is provided on the support fixture 20, and the step surfaces of the step are used to carry the collecting plate 03 and the cover plate 022 respectively.

[0053] The support fixture 20 includes a first clamping portion 201 and a second clamping portion 202, which are connected to form a first through hole, and the first clamping portion 201 and the second clamping portion 202 are respectively located on both sides of the axis of the first through hole. That is, the support fixture 20 is a split structure, the first clamping portion 201 and the second clamping portion 202 are respectively semi-cylindrical structures, and the first clamping portion 201 and the second clamping portion 202 are combined to form a hollow columnar support fixture 20.

[0054] The first clamping part 201 and the second clamping part 202 are engaged, and a first engaging part is provided on the first clamping part 201, and a second engaging part is provided on the second clamping part 202, and the first engaging part and the second engaging part cooperate to achieve the engagement of the first clamping part 201 and the second clamping part 202. The first engaging part is one of the engaging protrusion and the engaging hole, and the second engaging part is the other of the engaging protrusion and the engaging hole. Alternatively, the first clamping part 201 and the second clamping part 202 are attracted, and a first magnetic attraction structure is provided on the first clamping part 201, and a second magnetic attraction structure is provided on the second clamping part 202, and the first clamping part 201 and the second clamping part 202 are attracted by the first magnetic attraction structure and the second magnetic attraction structure.

[0055] The support fixture 20 and the support cup 10 containing the battery cell 01 are fitted on the fitting tower 40. The fitting tower 40 includes a fitting tower 40 seat and a fitting arm 41. The fitting arm 41 is connected to the fitting tower 40 seat, and a fitting station is formed between the fitting tower 40 seat and the fitting arm 41. The support cup 10 containing the battery cell 01 is input to a preset position on the fitting tower 40 seat through the battery cell 01 material conveying line, and the support fixture 20 is input to the fitting tower 40 through the fixture transmission line, and the fitting arm 41 grabs the support fixture 20. The support fixture 20 and the intermediate component are aligned through the fitting arm 41, and the support fixture 20 and the intermediate component are fitted.

[0056] The fitting arm 41 is provided with an air gripper, and the support fixture 20 is provided with a positioning hole. The air gripper extends into the positioning hole on the support fixture 20, and the air gripper clamps the support fixture 20. When the support fixture 20 includes a first clamping portion 201 and a second clamping portion 202, the fitting arm 41 may be provided with a first air gripper and a second air gripper, the first air gripper is used to grasp the first clamping portion 201, and the second air gripper is used to grasp the second clamping portion 202. The air gripper can grasp the support fixture 20 by clamping or suction.

[0057] The support fixture 20 of the input fitting tower 40 is in a buckled state, the fitting arm 41 is aligned with the support fixture 20 (a sensor disposed on the fitting arm 41 detects whether the fitting arm 41 and the support fixture 20 are aligned), and the first air gripper and the second air gripper drive the first clamping part 201 and the second clamping part 202 to separate. When the fitting arm 41 and the intermediate assembly are aligned, the first air gripper and the second air gripper drive the first clamping part 201 and the second clamping part 202 to buckle.

[0058] like Figure 8 As shown, the carrier 30 is used to transfer the collecting plate 03, and a fourth bearing portion 301 is provided on the carrier 30, and the fourth bearing portion 301 is used to install the collecting plate 03; the welding tower 50 receives the carrier 30 carrying the collecting plate 03, and installs the collecting plate 03 on the carrier 30 to the second bearing portion 22 of the supporting fixture 20.

[0059] The carrier 30 includes a bearing column 31, and a second recess with an opening is provided on the end surface of the bearing column 31, and the second recess forms a fourth bearing portion 301. The shape of the second recess matches the shape of the current collecting plate 03. For example, the current collecting plate 03 is a disc-shaped structure, and the second recess is a circular recess.

[0060] When the battery cell 01 and the current collecting plate 03 are welded, the positive current collecting part of the current collecting plate 03 and the positive pole tab are welded, and the negative current collecting part of the current collecting plate 03 and the negative pole tab are welded, in order to ensure the alignment of the pole tab and the corresponding current collecting part during welding. In order to solve this problem, a second positioning section 311 is provided on the bearing column 31, and the second positioning section 311 includes at least one positioning plane provided on the side of the bearing column 31. By providing the second positioning section 311 on the bearing column 31, the positioning of the carrier 30 during transportation and installation is achieved.

[0061] For example, the positioning section includes four positioning planes connected in sequence, and the orthographic projection of the second positioning section 311 on the end surface of the bearing column 31 is a rectangle. That is, at least part of the bearing column 31 is a square. The corners of the rectangle can facilitate the carrier to be engaged in the transport planetary gear to prevent the bearing column 31 from rotating.

[0062] Furthermore, in order to ensure the alignment of the current collecting plate 03 and the carrier 30, the fourth bearing part 301 is provided with a positioning pin, which is used to position the current collecting plate 03. For example, the positioning pin can be a protrusion on the bottom wall of the fourth bearing part 301, on this basis, a positioning hole and the positioning pin can be provided at the bottom of the current collecting plate 03; or the positioning pin can be a protrusion on the side wall of the fourth bearing part 301, on this basis, only a positioning groove and the positioning pin can be provided on the side of the current collecting plate 03.

[0063] In order to import the carrier 30 carrying the collecting plate 03 into the welding tower 50, as shown in FIG. Fig. 9As shown, the welding equipment may further include a first carrier transmission line 81 and a transfer planetary wheel 83. The collector plate 03 transmission line is used to transfer the carrier 30 loaded with the collector plate 03. The transfer planetary wheel 83 is docked with the first carrier transmission line 81 and the welding tower 50 respectively. The transfer planetary wheel 83 has a carrier 30 clamping portion, and the carrier 30 clamping portion is used to clamp and position the second positioning section 311. The rectangular corners of the second positioning section 311 can facilitate the carrier 30 to be engaged in the transfer planetary wheel 83 to prevent the bearing column 31 from rotating.

[0064] A card plate may be provided on the first carrier transmission line 81, and the card plate protrudes from the first carrier transmission line 81. For example, two opposing card plates are provided on the first carrier transmission line 81, and a receiving space for receiving the carrier 30 is formed between the card plates. The carrier 30 is provided in the receiving space, and the positioning surface of the carrier 30 is in contact with the inner wall of the card plate, and the carrier 30 is limited by the card plate.

[0065] The transfer planetary wheel 83 is disposed between the first carrier transmission line 81 and the welding tower 50, and is used to transfer the carrier 30 from the first carrier transmission line 81 to the welding tower 50. The transfer planetary wheel 83 is provided with a plurality of carrier 30 clamping parts, and the plurality of carrier 30 clamping parts are evenly distributed along the circumference of the transfer planetary wheel 83. The carrier 30 clamping part can be rectangular, and the second positioning section 311 is clamped by the carrier 30 clamping part, which can realize the transfer of the carrier 30 on the one hand, and can position the carrier 30 and the collecting plate 03 on the other hand.

[0066] When the carrier 30 inputs the collecting plate 03 into the welding tower 50, the carrier 30 needs to be output from the welding tower 50. In order to output the carrier 30 from the welding tower 50, the welding equipment provided by the embodiment of the present disclosure may further include a second carrier transmission line 82, which is connected to the welding tower 50 and is used to output the carrier 30.

[0067] The welding tower 50 includes a welding tower base and a welding device, wherein the welding device is arranged on the welding tower base. Fig.10 As shown, the welding device includes a bracket 51, a support plate assembly 52, a first clamping jaw 53, a second clamping jaw 54 and a pressing plate assembly 55, the bracket 51 is connected to the welding tower base; the support plate 521 is slidably connected to the bracket 51, and the support plate assembly 52 is used to support and clamp the support cup 10; the first clamping jaw 53 is connected to the bracket 51, and the first clamping jaw 53 is arranged on the side of the support plate assembly 52 away from the welding tower base, and the first clamping jaw 53 is used to clamp and position the battery cell 01; the second clamping jaw 54 is connected to the bracket 51, and the second clamping jaw 54 is arranged on the side of the first clamping jaw 53 away from the support plate assembly 52, and the second clamping jaw 54 is used to clamp the supporting fixture 20, and the pressing plate assembly 55 is arranged on the side of the second clamping jaw 54 away from the first clamping jaw 53, and the pressing plate assembly 55 is used to press the collecting plate 03 and the battery cell 01.

[0068] The welding device also includes a first height adjustment component 56 and a second height adjustment component 57. The first height adjustment component 56 is arranged between the support plate assembly 52 and the welding tower base, and the first height adjustment component 56 is used to adjust the height of the support plate assembly 52; the second height adjustment component 57 is connected to the pressure plate assembly 55, and the second height adjustment component 57 is used to adjust the height of the pressure plate assembly 55.

[0069] The bracket 51 may be fixedly connected to the welding tower base, or the bracket 51 may be movably connected to the welding tower base. For example, the bracket 51 is slidably connected to the welding tower base, and the bracket 51 can move on the surface of the welding tower base. The bracket 51 may be provided with a slide rail, which is used to guide the support plate assembly 52, the first clamping jaw 53, the second clamping jaw 54, and the pressure plate assembly 55 connected to the bracket 51.

[0070] The support plate assembly 52 is slidably connected to the bracket 51, and the support plate assembly 52 can move on the bracket 51 in a direction perpendicular to the welding tower base. The support plate assembly 52 includes a support plate 521 and a support cup clamp 522. The support plate 521 is used to support the support cup 10. The support cup clamp 522 is arranged above the support plate 521. The support cup clamp 522 is used to clamp or adsorb the support cup 10. For example, when a magnetic part is provided on the support cup 10, a magnetic part is also provided on the support cup clamp 522, so that the support cup 10 is adsorbed by the support cup clamp 522.

[0071] The first clamp 53 is slidably connected to the bracket 51, or the first clamp 53 is fixedly connected to the bracket 51. The first clamp 53 is arranged on the side of the support plate assembly 52 away from the welding tower seat, and the first clamp 53 is used to clamp and position the battery cell 01. That is, the first clamp 53 is located in the gap between the support cup 10 and the support fixture 20, and the battery cell 01 is clamped by the first clamp 53 to prevent the battery cell 01 from deviating and affecting the welding. The second clamp 54 is slidably connected to the bracket 51, or the second clamp 54 is fixedly connected to the bracket 51. The second clamp 54 is arranged on the side of the first clamp 53 away from the support plate assembly 52, and the second clamp 54 clamps the support fixture 20 to improve the stability of the support fixture 20.

[0072] The first height adjustment assembly 56 includes a first height adjustment cam 561 and a first height adjustment spring 562. The first height adjustment spring 562 is respectively connected to the support plate assembly 52 and the first height adjustment cam 561. When the first height adjustment cam 561 rotates, it drives the first height adjustment spring 562 to drive the support plate assembly 52 to move.

[0073] For example, the first height adjustment assembly 56 may further include a first connecting rod 563 and a first support 564, the first support 564 and the bracket 51 are slidably connected, the support plate 521 is disposed above the first support 564, there is a gap between the support plate 521 and the first support 564, and the first height adjustment spring 562 is disposed between the support plate 521 and the first support 564. One end of the first connecting rod 563 is connected to the first height adjustment cam 561, and the other end of the first connecting rod 563 is connected to the first support 564. When the first height adjustment cam 561 rotates, the first connecting rod 563 drives the first support 564 to move in the height direction, the first support 564 compresses the first height adjustment spring 562, and the first height adjustment spring 562 drives the support plate assembly 52 to move.

[0074] The second height adjustment assembly 57 includes a height adjuster 571 and a pressure sensor 572. The height adjuster 571 is connected to the bracket 51, and the height adjuster 571 is located on the side of the pressure plate assembly 55 away from the second clamp 54; the pressure sensor 572 is arranged between the height adjuster 571 and the pressure plate assembly 55, and the pressure sensor 572 is used to detect the pressure between the height adjuster 571 and the pressure plate assembly 55.

[0075] The height adjuster 571 includes an adjusting screw and an adjusting support. The adjusting support is disposed at the top of the bracket 51. The adjusting screw is connected to the adjusting support. The lower end of the adjusting screw is connected to the pressing plate assembly 55. The pressing plate assembly 55 is driven to move by the adjusting screw to adjust the height of the pressing plate assembly 55. The pressure sensor 572 detects the pressure between the pressing plate assembly 55 and the height adjuster 571. The pressure between the pressing plate assembly 55 and the height adjuster 571 is also the pressure between the battery cell 01 and the current collecting plate 03.

[0076] like Fig.11 As shown, the pressure plate assembly 55 includes a positioning plate 551, a first pressure plate 552 and a second pressure plate 553, the positioning plate 551 is connected to the bracket 51; the first pressure plate 552 and the positioning plate 551 are fixedly connected; the second pressure plate 553 is arranged on the side of the first pressure plate 552, and the second pressure plate 553 and the positioning plate 551 are connected by a spring.

[0077] The positioning plate 551 is slidably connected to the bracket 51, and the first pressing plate 552 and the second pressing plate 553 are connected to the positioning plate 551. The current collecting plate 03 includes a first current collecting part 031 and a second current collecting part. The first pressing plate 552 is used to press the first current collecting part 031, and the second pressing plate 553 is used to press the second current collecting part. One of the first pressing plate 552 and the second pressing plate 553 is fixedly connected to the positioning plate 551, and the other of the first pressing plate 552 and the second pressing plate 553 is connected to the positioning plate 551 through a spring. Since the thickness of the positive pole tab is inconsistent with the thickness of the negative pole tab, the positive pole is thicker than the negative pole, so the negative pole current collecting plate is designed to be closer to the tab lead-out end of the battery cell 01 than the positive pole current collecting plate. When the pressing plate assembly 55 is pressed down to make the current collecting plate 03 and the tab fit tightly, it is hoped that the pressure range is controlled within a certain range, and it cannot be over-pressured or under-pressured. Since the heights of the pole ears are inconsistent and there are design and manufacturing tolerances between different batteries, if the same fixed pressure plate is used to press the current collector 03 at the same time, it is easy to cause the pressure of the positive current collector to press the positive electrode to be appropriate while the pressure of the negative collector to press the negative electrode is excessive, or the negative electrode is appropriate and the positive electrode is over-pressured. Therefore, one of the first pressure plate 552 and the second pressure plate 553 needs to use a soft limiter so that when one pressure plate is fixed, the other pressure plate has a certain margin for up and down movement.

[0078] In order to enable the pressure plate assembly 55 to move in the vertical direction, the pressure plate assembly 55 can also include a second height adjustment cam 573 and a second connecting rod 574, one end of the second connecting rod 574 is connected to the second height adjustment cam 573, and the other end of the second connecting rod 574 is connected to the positioning plate 551. When the second height adjustment cam 573 rotates, the second connecting rod 574 drives the positioning plate 551 to move in the vertical direction.

[0079] Furthermore, in order to transfer the current collecting plate 03 from the carrier 30 to the supporting fixture 20, the welding device further includes an adsorbent, which is arranged on the bracket 51 and is used to adsorb the current collecting plate 03. The adsorbent can be a suction cup, and there is a gap between the first pressing plate 552 and the second pressing plate 553. The suction cup is located in the gap between the first pressing plate 552 and the second pressing plate 553, and the suction cup is connected to the vacuum device through a pipeline. When the carrier 30 moves to the welding device, the suction cup absorbs the current collecting plate 03 on the carrier 30, and then the carrier 30 is moved out of the welding device, and the suction cup places the current collecting plate 03 on the supporting fixture 20.

[0080] The welding device can weld by laser welding or resistance welding. When the current collecting plate 03 is placed on the second bearing part 22 of the supporting fixture 20, the image of the current collecting plate 03 can be collected by the image acquisition device, and it is determined whether the current collecting plate 03 is placed in place according to the image of the current collecting plate 03. When the current collecting plate 03 is placed in place, the current collecting plate 03 and the battery cell 01 are welded. When the current collecting plate 03 and the battery cell 01 are welded, the current collecting plate 03 and the cover plate 022 can be welded next. When welding, the cover plate 022 is set on the third bearing part of the supporting fixture 20, and the current collecting plate 03 and the cover plate 022 are welded, or the current collecting plate 03 and the pole 04 on the cover plate 022 are welded.

[0081] The test tower 60 receives the battery output by the welding tower 50 and is used to test the insulation and pressure resistance of the battery to determine whether the welding of the battery is qualified. The test tower 60 detects the high-voltage insulation of the battery. If the high-voltage insulation meets the requirements, it is a qualified battery, and if the high-voltage insulation does not meet the requirements, it is an unqualified battery.

[0082] The batteries tested by the test tower 60 need to be output in different paths to facilitate the classification of qualified batteries and unqualified batteries. The welding equipment may also include a first output wheel 71 and a second output wheel 72. The first output wheel 71 is docked with the test tower 60 to output qualified batteries; the second output wheel 72 is docked with the test tower 60 to output unqualified batteries. For example, the first output wheel 71 and the second output wheel 72 may be planetary output wheels. The first output wheel 71 and the second output wheel 72 have opposite rotation directions. At the connected workstations, qualified products and unqualified products must be separated and taken to different directions. Therefore, there is a requirement for rapid handover and steering at the connected workstations. By setting the rotation directions of the first output wheel 71 and the second output wheel 72 to be opposite, qualified products and unqualified products can be output from different directions.

[0083] The first output wheel 71 is provided with a vacuum suction nozzle on the clamping position, and the second output wheel 72 is provided with a vacuum suction nozzle on the clamping position, that is, the first output wheel 71 and the second output wheel 72 both suck the workpiece tightly by vacuum adsorption. In the related art, the clamping position uses magnetic attraction or clamping to fix the items on the workstation. When the items on the workstation need to be transferred to another star wheel or tower, a cylinder is used to apply a thrust to the items to be transferred on the workstation to make it leave the original workstation, but this method is not fast enough. It can still be applied when the direction is the same after and before the transfer, but when a quick transfer and change of direction are required, it is easy to get stuck and other phenomena; therefore, the star wheel in the waste removal link of this embodiment uses a vacuum suction nozzle to fix the items on the workstation. When the transfer is required, the vacuum of the original workstation is removed, and the vacuum degree of the counter position is increased, so that the items on the workstation can be quickly transferred, and the work efficiency is improved.

[0084] The cylindrical battery welding equipment provided by the embodiment of the present disclosure includes a support cup 10, a support fixture 20, a fitting tower 40 and a welding tower 50. The support cup 10 is provided with a first bearing portion 101 for bearing a battery cell 01. The support fixture 20 is provided with an alignment portion 21 and a second bearing portion 22. The alignment portion 21 is used for alignment when fitting with the support cup 10. The second bearing portion 22 carries a collecting plate 03. The fitting tower 40 is used to fit the support cup 10, the battery cell 01 and the support fixture 20 to form an intermediate component. The welding tower 50 receives the intermediate component and welds the battery cell 01 and the collecting plate 03. The alignment of the battery cell 01 in the support cup and the collecting plate 03 on the support fixture 20 is achieved through the support fixture 20, thereby improving the alignment accuracy during battery welding and thereby improving the quality of the battery.

[0085] like Fig.12 As shown, the cylindrical battery welding device provided by the exemplary embodiment of the present disclosure may include the following steps when welding cylindrical batteries:

[0086] Step S110, using a sleeve tower to sleeve the support fixture onto the support cup with the battery cell installed, to form an intermediate assembly;

[0087] Step S120, moving the intermediate assembly to the welding tower, and transferring the current collecting plate to the second bearing portion on the supporting fixture to achieve alignment between the current collecting plate and the battery cell;

[0088] Step S130, welding the battery cell and the current collecting plate by means of a welding tower.

[0089] Furthermore, the welding method provided in the embodiment of the present disclosure may also include:

[0090] Step S140, testing the insulation withstand voltage of the battery through a test tower to determine whether the battery is qualified;

[0091] Step S150, outputting qualified batteries through the first output wheel, and outputting unqualified batteries through the second output wheel.

[0092] The following will describe in detail each step S110 of the cylindrical battery welding method provided by the embodiment of the present disclosure:

[0093] In step S110 , the support fixture 20 is sleeved onto the support cup 10 with the battery cell 01 installed thereon by using the sleeve tower 40 to form an intermediate assembly.

[0094] The support fixture 20 and the support cup 10 containing the battery cell 01 are fitted on the fitting tower 40. The fitting tower 40 includes a fitting tower 40 seat and a fitting arm 41. The fitting arm 41 is connected to the fitting tower 40 seat, and a fitting station is formed between the fitting tower 40 seat and the fitting arm 41. The support cup 10 containing the battery cell 01 is input to a preset position on the fitting tower 40 seat through the battery cell 01 material conveying line, the support fixture 20 is input to the fitting tower 40 through the fixture transmission line, and the fitting arm 41 grabs the support fixture 20. The support fixture 20 and the intermediate component are aligned through the fitting arm 41, and the support fixture 20 and the intermediate component are fitted.

[0095] The fitting arm 41 is provided with an air gripper, and the support fixture 20 is provided with a positioning hole. The air gripper extends into the positioning hole on the support fixture 20, and the air gripper clamps the support fixture 20. When the support fixture 20 includes a first clamping portion 201 and a second clamping portion 202, the fitting arm 41 may be provided with a first air gripper and a second air gripper, the first air gripper is used to grasp the first clamping portion 201, and the second air gripper is used to grasp the second clamping portion 202. The air gripper can grasp the support fixture 20 by clamping or suction.

[0096] The support fixture 20 of the input fitting tower 40 is in a buckled state, the fitting arm 41 is aligned with the support fixture 20 (a sensor disposed on the fitting arm 41 detects whether the fitting arm 41 and the support fixture 20 are aligned), and the first air gripper and the second air gripper drive the first clamping part 201 and the second clamping part 202 to separate. When the fitting arm 41 and the intermediate assembly are aligned, the first air gripper and the second air gripper drive the first clamping part 201 and the second clamping part 202 to buckle.

[0097] In step S120 , the intermediate assembly is moved to the welding tower 50 , and the current collecting plate 03 is transferred to the second bearing portion 22 on the supporting fixture 20 , so as to achieve alignment between the current collecting plate and the battery cell.

[0098] The current collecting plate 03 may be transferred to the second bearing portion 22 on the supporting fixture 20 by transferring the carrier 30 with the current collecting plate 03 installed to the welding tower 50 , and transferring the current collecting plate 03 to the second bearing portion 22 of the supporting fixture 20 .

[0099] The carrier 30 is used to transfer the collecting plate 03 . The carrier 30 is provided with a fourth bearing portion 301 for mounting the collecting plate 03 . The welding tower 50 receives the carrier 30 carrying the collecting plate 03 , and mounts the collecting plate 03 on the carrier 30 to the second bearing portion 22 of the supporting fixture 20 .

[0100] In order to input the carrier 30 carrying the collecting plate 03 into the welding tower 50, the welding equipment can also include a first carrier transmission line 81 and a transfer planetary wheel 83. The collecting plate 03 transmission line is used to transmit the carrier 30 loaded with the collecting plate 03; the transfer planetary wheel 83 is respectively docked with the first carrier transmission line 81 and the welding tower 50, and the transfer planetary wheel 83 has a carrier 30 clamping portion, and the carrier 30 clamping portion is used to clamp and position the second positioning section 311.

[0101] A card plate may be provided on the first carrier transmission line 81, and the card plate protrudes from the first carrier transmission line 81. For example, two opposing card plates are provided on the first carrier transmission line 81, and a receiving space for receiving the carrier 30 is formed between the card plates. The carrier 30 is provided in the receiving space, and the positioning surface of the carrier 30 is in contact with the inner wall of the card plate, and the carrier 30 is limited by the card plate.

[0102] The transfer planetary wheel 83 is disposed between the first carrier transmission line 81 and the welding tower 50, and is used to transfer the carrier 30 from the first carrier transmission line 81 to the welding tower 50. The transfer planetary wheel 83 is provided with a plurality of carrier 30 clamping parts, and the plurality of carrier 30 clamping parts are evenly distributed along the circumference of the transfer planetary wheel 83. The carrier 30 clamping part can be rectangular, and the second positioning section 311 is clamped by the carrier 30 clamping part, which can realize the transfer of the carrier 30 on the one hand, and can position the carrier 30 and the collecting plate 03 on the other hand.

[0103] When the carrier 30 inputs the collecting plate 03 into the welding tower 50, the carrier 30 needs to be output from the welding tower 50. In order to output the carrier 30 from the welding tower 50, the welding equipment provided by the embodiment of the present disclosure may further include a second carrier transmission line 82, which is connected to the welding tower 50 and is used to output the carrier 30.

[0104] The welding tower 50 includes a welding tower base and a welding device, which is arranged on the welding tower base. The welding device includes a bracket 51, a support plate assembly 52, a first clamp 53, a second clamp 54 and a pressure plate assembly 55. The bracket 51 is connected to the welding tower base; the support plate 521 is slidably connected to the bracket 51, and the support plate assembly 52 is used to support and clamp the support cup 10; the first clamp 53 is connected to the bracket 51, and the first clamp 53 is arranged on the side of the support plate assembly 52 away from the welding tower base, and the first clamp 53 is used to clamp and position the battery cell 01; the second clamp 54 is connected to the bracket 51, and the second clamp 54 is arranged on the side of the first clamp 53 away from the support plate assembly 52, and the second clamp 54 is used to clamp the support fixture 20, and the pressure plate assembly 55 is arranged on the side of the second clamp 54 away from the first clamp 53, and the pressure plate assembly 55 is used to press the collecting plate 03 and the battery cell 01.

[0105] The welding device also includes a first height adjustment component 56 and a second height adjustment component 57. The first height adjustment component 56 is arranged between the support plate assembly 52 and the welding tower base, and the first height adjustment component 56 is used to adjust the height of the support plate assembly 52; the second height adjustment component 57 is connected to the pressure plate assembly 55, and the second height adjustment component 57 is used to adjust the height of the pressure plate assembly 55.

[0106] The bracket 51 may be fixedly connected to the welding tower base, or the bracket 51 may be movably connected to the welding tower base. For example, the bracket 51 is slidably connected to the welding tower base, and the bracket 51 can move on the surface of the welding tower base. The bracket 51 may be provided with a slide rail, which is used to guide the support plate assembly 52, the first clamping jaw 53, the second clamping jaw 54, and the pressure plate assembly 55 connected to the bracket 51.

[0107] The support plate assembly 52 is slidably connected to the bracket 51, and the support plate assembly 52 can move on the bracket 51 in a direction perpendicular to the welding tower base. The support plate assembly 52 includes a support plate 521 and a support cup clamp 522. The support plate 521 is used to support the support cup 10. The support cup clamp 522 is arranged above the support plate 521. The support cup clamp 522 is used to clamp or adsorb the support cup 10. For example, when a magnetic part is provided on the support cup 10, a magnetic part is also provided on the support cup clamp 522, so that the support cup 10 is adsorbed by the support cup clamp 522.

[0108] The first clamp 53 is slidably connected to the bracket 51, or the first clamp 53 is fixedly connected to the bracket 51. The first clamp 53 is arranged on the side of the support plate assembly 52 away from the welding tower seat, and the first clamp 53 is used to clamp and position the battery cell 01. That is, the first clamp 53 is located in the gap between the support cup 10 and the support fixture 20, and the battery cell 01 is clamped by the first clamp 53 to prevent the battery cell 01 from deviating and affecting the welding. The second clamp 54 is slidably connected to the bracket 51, or the second clamp 54 is fixedly connected to the bracket 51. The second clamp 54 is arranged on the side of the first clamp 53 away from the support plate assembly 52, and the second clamp 54 clamps the support fixture 20 to improve the stability of the support fixture 20.

[0109] The pressure plate assembly 55 includes a positioning plate 551, a first pressure plate 552 and a second pressure plate 553. The positioning plate 551 is connected to the bracket 51; the first pressure plate 552 and the positioning plate 551 are fixedly connected; the second pressure plate 553 is arranged on the side of the first pressure plate 552, and the second pressure plate 553 and the positioning plate 551 are connected by a spring.

[0110] The positioning plate 551 is slidably connected to the bracket 51, and the first pressing plate 552 and the second pressing plate 553 are connected to the positioning plate 551. The current collecting plate 03 includes a first current collecting part 031 and a second current collecting part. The first pressing plate 552 is used to press the first current collecting part 031, and the second pressing plate 553 is used to press the second current collecting part. One of the first pressing plate 552 and the second pressing plate 553 is fixedly connected to the positioning plate 551, and the other of the first pressing plate 552 and the second pressing plate 553 is connected to the positioning plate 551 through a spring. Since the thickness of the positive pole tab is inconsistent with the thickness of the negative pole tab, the positive pole is thicker than the negative pole, so the negative pole current collecting plate is designed to be closer to the tab lead-out end of the battery cell 01 than the positive pole current collecting plate. When the pressing plate assembly 55 is pressed down to make the current collecting plate 03 and the tab fit tightly, it is hoped that the pressure range is controlled within a certain range, and it cannot be over-pressured or under-pressured. Since the heights of the pole ears are inconsistent and there are design and manufacturing tolerances between different batteries, if the same fixed pressure plate is used to press the current collector 03 at the same time, it is easy to cause the pressure of the positive current collector to press the positive electrode to be appropriate while the pressure of the negative collector to press the negative electrode is excessive, or the negative electrode is appropriate and the positive electrode is over-pressured. Therefore, one of the first pressure plate 552 and the second pressure plate 553 needs to use a soft limiter so that when one pressure plate is fixed, the other pressure plate has a certain margin for up and down movement.

[0111] In order to transfer the current collecting plate 03 from the carrier 30 to the supporting fixture 20, the welding device further includes an adsorbent, which is arranged on the bracket 51 and is used to adsorb the current collecting plate 03. The adsorbent can be a suction cup, and there is a gap between the first pressing plate 552 and the second pressing plate 553. The suction cup is located in the gap between the first pressing plate 552 and the second pressing plate 553, and the suction cup is connected to the vacuum device through a pipeline. When the carrier 30 moves to the welding device, the suction cup absorbs the current collecting plate 03 on the carrier 30, and then the carrier 30 is moved out of the welding device, and the suction cup places the current collecting plate 03 on the supporting fixture 20.

[0112] In step S130 , the battery cell 01 and the current collecting plate 03 are welded by the welding tower 50 .

[0113] The welding device can weld by laser welding or resistance welding, etc. When the collector plate 03 is placed on the second bearing portion 22 of the support fixture 20, the image of the collector plate 03 can be captured by the image acquisition device, and it is determined whether the collector plate 03 is in place according to the image of the collector plate 03. When the collector plate 03 is in place, the collector plate 03 and the battery cell 01 are welded.

[0114] In step S140, the insulation withstand voltage of the battery is tested by the test tower 60 to determine whether the battery is qualified.

[0115] The test tower 60 is used to test the insulation and pressure resistance of the battery to determine whether the welding of the battery is qualified. The test tower 60 detects the high-voltage insulation of the battery. If the high-voltage insulation meets the requirements, it is a qualified battery. If the high-voltage insulation does not meet the requirements, it is an unqualified battery.

[0116] In step S150, qualified batteries are output through the first output wheel, and unqualified batteries are output through the second output wheel.

[0117] Among them, the batteries tested by the test tower 60 need to be output in different paths to facilitate the classification of qualified batteries and unqualified batteries. The welding equipment may also include a first output wheel and a second output wheel, the first output wheel is docked with the test tower 60 to output qualified batteries; the second output wheel is docked with the test tower 60 to output unqualified batteries. For example, the first output wheel and the second output wheel can both be planetary output wheels.

[0118] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A cylindrical battery welding device, characterized in that: The welding equipment comprises: A support cup, wherein a first bearing portion is provided in the support cup, and the first bearing portion is used to bear the battery cell; A supporting fixture, wherein the supporting fixture is provided with an alignment portion and a second bearing portion, wherein the second bearing portion is used to bear the current collecting plate, and the alignment portion is used to align with the supporting cup when being sheathed; A sleeve tower, which is used to sleeve the support cup, the battery cell and the support fixture to form an intermediate component, and output the intermediate component; A welding tower is used to receive the intermediate assembly and transfer the current collecting plate to the second bearing portion, and the welding tower welds the battery cell and the current collecting plate.

2. The welding device according to claim 1, characterized in that The support cup comprises: A cup body, wherein a first depression with an opening is provided on the cup body, wherein the first depression forms the first bearing portion, wherein the first depression is cylindrical, wherein the depth of the first depression is less than the height of the battery cell, wherein the depth of the first depression is the dimension of the first depression in the axial direction of the first depression, and the height of the battery cell is the dimension of the first depression in the axial direction of the first depression.

3. The welding device according to claim 2, characterized in that The support cup also includes: A clamping member, wherein the clamping member comprises a clamping wheel, wherein the clamping wheel is arranged at the open end of the cup body, and the friction coefficient between the clamping member and the battery core is greater than or equal to 0.

1.

4. The welding device according to claim 3, characterized in that The clamping member also includes an annular spring, which surrounds the cup body and is located at one end of the opening of the cup body. The annular spring is passed through the clamping wheel. The annular spring clamps the battery cell when the battery cell enters the first recess and releases the battery cell when the battery cell moves out of the first recess.

5. The welding device according to claim 3, characterized in that The surface of the clamping wheel is provided with an elastic layer.

6. The welding device according to claim 2, characterized in that The support cup also includes: An ejector pin, the ejector pin is disposed in the first recess and is arranged along the axis of the first recess, and the battery core is sleeved on the ejector pin; An elastic member is provided, wherein the elastic member is respectively connected to the cup body and the ejector pin, so that the ejector pin can move along the axis of the first recess.

7. The welding device according to claim 2, characterized in that The cup body has a magnetic portion.

8. The welding device according to claim 2, characterized in that The support cup also includes: A support plate, the support plate is disposed in the first recess, and the support plate is used to support the battery cell; A highly compatible block is provided at one end of the support plate away from the opening, and the highly compatible block supports the support plate so that the support cup can be used for battery cells of different heights.

9. The welding device according to claim 2, characterized in that: The cup body has a first positioning segment, the outer contour of the orthographic projection area of ​​the first positioning segment on the first plane is a rectangle, and the first plane is perpendicular to the axis of the first recess.

10. The welding device according to claim 1, characterized in that The supporting fixture has a first through hole therein, the first through hole includes an alignment section and a first bearing section, the alignment section forms an alignment part, the alignment section is sleeved on the battery cell, the first bearing section is located at one end of the alignment section away from the supporting cup, and the first bearing section forms the second bearing part.

11. The welding device according to claim 10, characterized in that The supporting fixture comprises: a first clamping portion; The second clamping portion, the first clamping portion and the second clamping portion are connected to form a first through hole, and the first clamping portion and the second clamping portion are respectively located on both sides of the axis of the first through hole.

12. The welding device according to claim 10, characterized in that A positioning protrusion is arranged on the inner wall of the alignment section, and the positioning protrusion is located at one end of the alignment section close to the first bearing section.

13. The welding device according to claim 10, characterized in that The supporting fixture is also provided with a third bearing portion, which is arranged on a side of the second bearing portion away from the alignment portion, and is used for bearing the cover plate.

14. The welding device according to claim 13, characterized in that The first through hole further has a second bearing section, which is located on a side of the first bearing section away from the alignment section, and a diameter of the second bearing section is greater than a diameter of the first bearing section.

15. The welding device according to claim 1, characterized in that The welding equipment also includes: A carrier, the carrier comprising a bearing column, an end surface of the bearing column is provided with a second recess having an opening, the second recess forms a fourth bearing portion, and the fourth bearing portion is used to bear the collecting plate; The welding tower receives a carrier carrying the current collecting plate, and mounts the current collecting plate on the carrier to the second carrying portion of the supporting fixture.

16. The welding device according to claim 15, characterized in that The bearing column has a second positioning section, and the second positioning section includes at least one positioning plane arranged on the side of the bearing column.

17. The welding device according to claim 16, characterized in that The second positioning section includes four positioning planes connected in sequence, and the orthographic projection of the second positioning section on the end surface of the bearing column is a rectangle.

18. The welding device according to claim 16, characterized in that The welding equipment also includes: a first carrier transmission line, the first carrier transmission line being used to transmit a carrier loaded with the current collecting plate; A transfer planetary wheel, wherein the transfer planetary wheel is respectively connected to the first carrier transmission line and the welding tower, and the transfer planetary wheel has a carrier clamping portion, and the carrier clamping portion is used to clamp and position the second positioning section.

19. The welding device according to claim 15, characterized in that The fourth bearing portion is provided with a positioning pin, and the positioning pin is used to position the current collecting plate.

20. The welding device according to claim 15, characterized in that The welding tower comprises: Welding tower base; A welding device, wherein the welding device is arranged on the welding tower base, and the welding device comprises a bracket, a support plate assembly, a first clamp, a second clamp and a pressure plate assembly, wherein the bracket is connected to the welding tower base; the support plate assembly is slidably connected to the bracket, and the support plate assembly is used to support and clamp the support cup; the first clamp is connected to the bracket, and the first clamp is arranged on the side of the support plate assembly away from the welding tower base, and the first clamp is used to clamp and position the battery cell; the second clamp is connected to the bracket, and the second clamp is arranged on the side of the first clamp away from the support plate assembly, and the second clamp is used to clamp the supporting fixture, and the pressure plate assembly is arranged on the side of the second clamp away from the first clamp, and the pressure plate assembly is used to press the collecting plate and the battery cell tightly.

21. The welding device according to claim 20, characterized in that The welding device also includes: A first height adjustment component, the first height adjustment component is arranged between the support plate component and the welding tower base, and the first height adjustment component is used to adjust the height of the support plate component; A second height adjustment component, the second height adjustment component is connected to the pressing plate component, and the second height adjustment component is used to adjust the height of the pressing plate component.

22. The welding device according to claim 21, characterized in that The first height adjustment component comprises: a first height adjustment cam; A first height adjustment spring, wherein the first height adjustment spring is respectively connected to the support plate assembly and the first height adjustment cam, and when the first height adjustment cam rotates, the first height adjustment spring is driven to drive the support plate assembly to move.

23. The welding device according to claim 21, characterized in that The second height adjustment assembly comprises: A height adjuster, the height adjuster is connected to the bracket and is located on a side of the pressing plate assembly away from the second clamping jaw; A pressure sensor is provided between the height adjuster and the pressure plate assembly, and is used to detect the pressure between the height adjuster and the pressure plate assembly.

24. The welding device according to claim 20, characterized in that The pressure plate assembly comprises: A positioning plate, the positioning plate is connected to the bracket; A first pressing plate, wherein the first pressing plate is fixedly connected to the positioning plate; The second pressing plate is arranged on the side of the first pressing plate, and the second pressing plate is connected to the positioning plate through a spring.

25. The welding device according to claim 20, characterized in that The welding device also includes: The adsorption member is arranged on the bracket and is used for adsorbing the collecting plate.

26. The welding device according to claim 1, characterized in that The welding equipment also includes: A testing tower, the testing tower receives the battery output by the welding tower, and the testing tower is used to test the insulation and pressure resistance of the battery to determine whether the welding of the battery is qualified; A first output wheel, the first output wheel is connected to the test tower to output qualified batteries; A second output wheel, the second output wheel is connected to the test tower to output unqualified batteries; The first output wheel and the second output wheel rotate in opposite directions, a vacuum suction nozzle is provided on the clamping position of the first output wheel, and a vacuum suction nozzle is provided on the clamping position of the second output wheel.

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