Cathode spot welding machine used for lithium battery repair product and easy to position

Abstract

The utility model provides an easily-positioned negative electrode spot welding machine for a lithium battery repair product. The easily-positioned negative electrode spot welding machine comprises a rack, a first welding electrode, a supporting table, a side positioning body and a second welding electrode. The rack comprises a base and a mounting frame; the mounting frame is arranged on the base; the first welding electrode is slidably mounted on the mounting frame; the supporting table is arranged on the base, and a mounting hole is formed in the supporting table; the side positioning body is connected to the side, away from the base, of the supporting table, a positioning groove is formed in the side positioning body, a magnetic part is embedded in the bottom of the positioning groove, the projection contour of the positioning groove on the side positioning body is arranged around the mounting hole, and the positioning groove is used for positioning and placing the steel shell so that the outer wall of the steel shell can abut against the positioning groove; the second welding electrode is located in the mounting hole and connected with the supporting table, the end face, exposed out of the supporting table, of the second welding electrode corresponds to the first welding electrode through the positioning groove, and the second welding electrode is used for abutting against the bottom of the steel shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cylindrical battery tab welding equipment, in particular to a negative spot welding machine for lithium battery repair product easy positioning. BACKGROUND

[0002] After cylindrical steel shell lithium battery is in the shell process, the negative tab of the battery roll core needs to be welded and fixed. Today, the industry generally adopts the resistance welding method to spot weld the negative tab to the steel shell, which is generally called bottom welding.

[0003] Although the bottom welding process of the steel shell lithium battery in the prior art basically realizes automatic welding processing, improves the bottom welding efficiency of the steel shell lithium battery, however, it cannot completely achieve a 100% bottom welding qualification rate, which means that there are some unqualified semi-finished products. The above unqualified semi-finished products mostly need manual repair due to negative tab virtual welding, welding off and other problems.

[0004] Among them, in the steel shell lithium battery repair process, the negative spot welding machine is usually used to re-weld the bottom, specifically, the production personnel aligns and places the steel shell with the battery roll core to the electrode group or the welding needle group on the negative spot welding machine, and then moves the electrode group or the welding needle group towards the negative tab and the steel shell to contact, so as to realize the bottom welding. However, in the manual operation of the bottom welding process, the convenience of the steel shell positioning is generally poor, which easily leads to low efficiency of the steel shell lithium battery repair welding. INVENTION CONTENTS

[0005] The utility model aims at overcoming the defects in the prior art, providing a negative spot welding machine for lithium battery repair product easy positioning, which effectively improves the convenience of steel shell positioning and placement, and thus improves the efficiency of steel shell lithium battery repair welding.

[0006] The utility model aims at overcoming the defects in the prior art, providing a negative spot welding machine for lithium battery repair product easy positioning, which effectively improves the convenience of steel shell positioning and placement, and thus improves the efficiency of steel shell lithium battery repair welding.

[0007] A negative spot welding machine for lithium battery repair product easy positioning, comprising:

[0008] The rack comprises a base and a mounting frame, and the mounting frame is arranged on the base;

[0009] The first welding electrode is slidably installed on the mounting frame;

[0010] The support table is arranged on the base, and the support table is provided with a mounting hole;

[0011] A side positioning body is connected to one side of the support table away from the base, and the side positioning body is provided with a positioning groove, and a magnetic element is embedded in the bottom of the positioning groove, and the positioning groove is arranged around the projection contour of the side positioning body and the mounting hole, and the positioning groove is used for positioning the steel shell, so that the outer wall of the steel shell abuts against the positioning groove.

[0012] A second welding electrode is arranged in the mounting hole and connected to the support table, and the second welding electrode is exposed to the end surface of the support table and arranged corresponding to the first welding electrode through the positioning groove, and the second welding electrode is used for abutting against the bottom of the steel shell; when the first welding electrode abuts against the negative tab of the battery core by sliding relative to the mounting frame, the negative spot welding machine spot welds the negative tab and the steel shell.

[0013] In one embodiment, the number of magnetic elements is multiple, and the multiple magnetic elements are sequentially and spacedly arranged in the bottom of the positioning groove.

[0014] In one embodiment, the side positioning body is detachably connected to the support table; and / or,

[0015] The support table is detachably connected to the base; and / or,

[0016] The support table has an arched structure.

[0017] In one embodiment, the easy-to-position negative spot welding machine for lithium battery repair products further comprises a sliding assembly, the sliding assembly comprises a sliding rail and a sliding mounting seat, the sliding mounting seat is slidably connected to the sliding rail through a sliding block, and the sliding rail is fixedly installed on the mounting frame.

[0018] In one embodiment, an electrode chuck is arranged on the sliding mounting seat.

[0019] The first welding electrode comprises a point contact electrode body, and the electrode chuck is used for clamping the point contact electrode body.

[0020] In one embodiment, the first welding electrode further comprises a welding pin, one end of the welding pin is inserted into the core hole of the battery core of the steel shell, so that the other end of the welding pin abuts against the negative tab, and the other end of the welding pin is arranged in alignment with the point contact electrode body.

[0021] In one embodiment, the easy-to-position negative spot welding machine for lithium battery repair products further comprises a telescopic air cylinder, the telescopic air cylinder is fixedly installed on the mounting frame, and the telescopic end of the telescopic air cylinder is fixedly connected to the sliding mounting seat.

[0022] In one of the embodiments, the center axis of the point contact electrode body, the center axis of the soldering pin, the center axis of the positioning groove and the center axis of the second soldering electrode all coincide with the same vertical center line.

[0023] In one of the embodiments, the second soldering electrode penetrates through the base and the support table to the below of the positioning groove in sequence, and the end surface of the second soldering electrode is flush with the end surface of the support table.

[0024] Compared with the prior art, the utility model has at least the following advantages:

[0025] The steel shell with the battery roll core is directly placed in the positioning groove, the steel shell is automatically adsorbed in the positioning groove by the magnetic force of the magnetic member, and the outer wall of the steel shell abuts against the positioning groove, so that the convenience of positioning and placing the steel shell is effectively improved, the first soldering electrode and the second soldering electrode are quickly operated to spot weld the negative pole lug and the steel shell, and the efficiency of the lithium battery repair welding of the steel shell is better improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled in the art, other related drawings can be obtained without the creative labor on the premise of the drawings.

[0027] Figure 1 It is the structure schematic view of the easy positioning negative pole spot welding machine for lithium battery repair product in an embodiment;

[0028] Figure 2 It is the structure schematic view of the easy positioning negative pole spot welding machine for lithium battery repair product in an embodiment; Figure 1 It is the partial enlarged view of A of the easy positioning negative pole spot welding machine for lithium battery repair product shown in the figure;

[0029] Figure 3 It is the structure schematic view of the easy positioning negative pole spot welding machine for lithium battery repair product in an embodiment; Figure 1 It is the structure schematic view of the easy positioning negative pole spot welding machine for lithium battery repair product in an embodiment;

[0030] Figure 4 It is the side view of the easy positioning negative pole spot welding machine for lithium battery repair product shown in the figure; Figure 1

[0031] Figure 5 It is the real object view of the easy positioning negative pole spot welding machine for lithium battery repair product;

[0032] Figure 6 It is the real object view of the easy positioning negative pole spot welding machine for lithium battery repair product; ​

[0033] Reference signs: easily positioned negative electrode spot welding machine for lithium battery repair product 10; rack 100; base 110; mounting bracket 120; first welding electrode 200; spot contact electrode body 210; welding pin 220; support table 300; mounting hole 301; side positioning body 400; positioning groove; magnetic piece 410; second welding electrode 500; sliding assembly 600; sliding rail 610; sliding mounting seat 620; electrode chuck 6210; telescopic air cylinder 700; steel shell 800. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] The present disclosure provides an easy-to-position negative electrode spot welding machine for lithium battery repair products, comprising a rack, a first welding electrode, a support table, a side positioning body and a second welding electrode. The rack comprises a base and a mounting frame; the mounting frame is arranged on the base; the first welding electrode is slidingly installed on the mounting frame; the support table is arranged on the base, and the support table is provided with a mounting hole; the side positioning body is connected to one side of the support table away from the base, and the side positioning body is provided with a positioning groove, the bottom of the positioning groove is embedded with a magnetic member, the projection contour of the positioning groove around the mounting hole is arranged, and the positioning groove is used for positioning the steel shell so that the outer wall of the steel shell abuts against the positioning groove; the second welding electrode is located in the mounting hole and connected with the support table, the second welding electrode is exposed on the end face of the support table and is correspondingly arranged with the first welding electrode through the positioning groove, and the second welding electrode is used for abutting against the bottom of the steel shell; when the first welding electrode abuts against the negative electrode lug of the battery winding core relative to the mounting frame, the negative electrode spot welding machine spot welds the negative electrode lug and the steel shell.

[0038] Please refer to Figures 1 to 4 In order to better understand the easy-to-position negative electrode spot welding machine 10 for lithium battery repair products of the present application, the easy-to-position negative electrode spot welding machine 10 for lithium battery repair products is further explained as follows:

[0039] The easy-to-position negative electrode spot welding machine 10 for lithium battery repair products in an embodiment comprises a rack 100, a first welding electrode 200, a support table 300, a side positioning body 400 and a second welding electrode 500. The rack 100 comprises a base 110 and a mounting frame 120; the mounting frame 120 is arranged on the base 110; the first welding electrode 200 is slidingly mounted on the mounting frame 120; the support table 300 is arranged on the base 110, and the support table 300 is provided with a mounting hole 301; the side positioning body 400 is connected to one side of the support table 300 away from the base 110, and the side positioning body 400 is provided with a positioning groove 401, the bottom of the positioning groove 401 is embedded with a magnetic member 410, the projection profile of the side positioning body 400 is arranged around the mounting hole 301, and the positioning groove 401 is used for positioning the steel shell 800 so that the outer wall of the steel shell 800 abuts against the positioning groove 401; the second welding electrode 500 is located in the mounting hole 301 and connected with the support table 300, the second welding electrode 500 is exposed to the end face of the support table 300 and is arranged correspondingly with the first welding electrode 200 through the positioning groove 401, and the second welding electrode 500 is used for abutting against the bottom of the steel shell 800; when the first welding electrode 200 slidingly abuts against the negative electrode lug of the battery roll core relative to the mounting frame 120, the negative electrode spot welding machine spot-welds the negative electrode lug and the steel shell 800.

[0040] In the embodiment, the steel shell 800 with the battery roll core can be directly placed in the positioning groove 401, and the steel shell 800 is automatically attracted to the positioning groove 401 by the magnetic force of the magnetic member 410 and the outer wall of the steel shell 800 abuts against the positioning groove 401, so that the convenience of positioning and placing the steel shell 800 is effectively improved, the first welding electrode 200 and the second welding electrode 500 are quickly spot-welded to the negative electrode lug and the steel shell 800 for subsequent operation, and the efficiency of the lithium battery repair welding of the steel shell 800 is better improved.

[0041] As shown in Figures 1 to 3 In one of the embodiments, the number of the magnetic members 410 is multiple, and the multiple magnetic members 410 are sequentially and spacedly arranged at the bottom of the positioning groove 401. Specifically, in the embodiment, the number of the magnetic members 410 is two, and the two magnetic members 410 are arranged at different levels, so that the upper part of the steel shell 800 and the lower part of the steel shell 800 can be tightly attracted to the positioning groove 401 respectively, thereby ensuring the stability and reliability of the positioning of the steel shell 800.

[0042] It should be noted that the magnetic member 410 is a magnet.

[0043] As shown in Figure 2As shown, in one embodiment, the side positioning body 400 is detachably connected to the support platform 300. This facilitates the assembly and disassembly of the side positioning body 400.

[0044] like Figure 2 and Figure 3 As shown, in one embodiment, the support platform 300 is detachably connected to the base 110. This facilitates the assembly and disassembly of the support platform 300.

[0045] like Figure 3 As shown, in one embodiment, the support platform 300 has an arched structure.

[0046] like Figure 1 and Figure 3 As shown, in one embodiment, the easily positioned negative electrode spot welding machine 10 for lithium battery repair further includes a sliding assembly 600. The sliding assembly 600 includes a slide rail 610 and a sliding mounting base 620. The sliding mounting base 620 is slidably connected to the slide rail 610 via a slider, and the slide rail 610 is fixedly mounted on the mounting frame 120. In one embodiment, the sliding mounting base 620 is provided with an electrode chuck 6210; the first welding electrode 200 includes a point contact electrode body 210, and the electrode chuck 6210 is used to hold the point contact electrode body 210.

[0047] It can be understood that the slider drives the sliding mounting base 620 to slide relative to the slide rail 610, so that the sliding mounting base 620 drives the electrode chuck 6210 and the contact electrode body 210 to move up and down.

[0048] like Figure 3 As shown, in one embodiment, the first welding electrode 200 further includes a welding needle 220, one end of which is inserted into the core hole of the battery core of the steel shell 800, so that one end of the welding needle 220 abuts against the negative electrode tab, and the other end of the welding needle 220 is aligned with the contact electrode body 210.

[0049] It is understood that in this embodiment, the welding needle 220 and the contact electrode body 210 are separate units. The sliding mounting base 620 slides downwards, causing it to move the electrode clamp 6210 and the contact electrode body 210, bringing the contact electrode body 210 into contact with the other end of the welding needle 220. This allows current to be transferred to the welding needle 220 for bottom welding. Specifically, the production personnel first manually insert one end of the welding needle 220 into the core hole of the battery core in the steel shell 800, and then position the steel shell 800 with the welding needle 220 inserted in the positioning groove 401. This makes the spot welding process safer and more flexible, and also facilitates the replacement of the worn welding needle 220 by the production personnel.

[0050] It should be noted that the second welding electrode 500 can be regarded as another welding pin 220 with a larger diameter by those skilled in the art; in addition, the working principle of the point contact electrode body 210, the welding pin 220 and the second welding electrode 500 for bottom welding of the steel shell 800 belongs to the prior art, which will not be described in detail here.

[0051] As shown in Figure 3 In one embodiment, the easy-to-position negative electrode spot welding machine for lithium battery repair products 10 further comprises a telescopic cylinder 700 fixedly installed on the mounting frame 120, and the telescopic end of the telescopic cylinder 700 is fixedly connected with the sliding mounting seat 620. In this way, the telescopic cylinder 700 improves the convenience of driving the sliding mounting seat 620 to slide, and at the same time improves the efficiency of lithium battery repair welding of the steel shell 800.

[0052] It should be noted that in this embodiment, the sliding mounting seat 620 is of a split structure, i.e. the sliding mounting seat 620 is divided into two parts, the two parts of the sliding mounting seat 620 are fixedly connected, and one part of the sliding mounting seat 620 is fixedly connected with the telescopic end of the telescopic cylinder 700, so that one part of the sliding mounting seat 620 is connected with the sliding rail 610 through a sliding block, and the other part of the sliding mounting seat 620 is provided with an electrode chuck 6210; of course, in other embodiments, the sliding mounting seat 620 can be of a whole structure.

[0053] As shown in Figure 2 and Figure 3 In one embodiment, the center axis of the point contact electrode body 210, the center axis of the welding pin 220, the center axis of the positioning groove 401 and the center axis of the second welding electrode 500 all coincide with the same vertical center line. In this way, when the steel shell 800 with the inserted welding pin 220 is positioned and placed in the positioning groove 401, the position accuracy of the spot welding of the welding pin 220 can be ensured.

[0054] As shown in Figure 2 and Figure 3 In one embodiment, the second welding electrode 500 penetrates through the base 110, the support table 300 and the positioning groove 401 in sequence, and the end face of the second welding electrode 500 is flush with the end face of the support table 300. In this way, when the steel shell 800 with the inserted welding pin 220 is positioned and placed in the positioning groove 401, the bottom of the steel shell 800 can directly abut against the end face of the second welding electrode 500, improving the convenience of positioning the steel shell 800.

[0055] Compared with the prior art, the utility model has at least the following advantages:

[0056] The battery-equipped steel shell winding core can be directly placed in the positioning groove, and the steel shell is automatically adsorbed on the positioning groove by the magnetic force of the magnetic member, and the outer wall of the steel shell abuts against the positioning groove, thereby effectively improving the convenience of positioning and placing the steel shell, facilitating the subsequent spot welding operation of the first welding electrode and the second welding electrode on the negative tab and the steel shell, and further improving the efficiency of the steel shell lithium battery repair welding.

[0057] The above-described embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A machine for spot welding of negative electrode of lithium battery repair product, characterized in that, The utility model relates to a negative electrode spot welding machine for lithium battery repair product easy to position, including: Rack, including pedestal and mounting frame, the mounting frame is located on the pedestal, First welding electrode, slidingly installed on the mounting frame, Supporting table, the supporting table is arranged on the pedestal, and the supporting table is provided with a mounting hole, Side positioning body, the side positioning body is connected to the side of the supporting table away from the pedestal, the side positioning body is provided with a positioning groove, the bottom of the positioning groove is embedded with a magnetic element, the projection contour of the side positioning body is arranged around the mounting hole, and the positioning groove is used for positioning and placing a steel shell so that the outer wall of the steel shell abuts against the positioning groove, Second welding electrode, located in the mounting hole and connected with the supporting table, the second welding electrode is exposed to the end surface of the supporting table and is correspondingly arranged with the first welding electrode through the positioning groove, and the second welding electrode is used for abutting against the bottom of the steel shell, when the first welding electrode abuts against the negative electrode lug of the battery roll core relative to the mounting frame, the negative electrode spot welding machine spot welds the negative electrode lug and the steel shell.

2. The easy to locate negative spot welder for lithium battery rework as claimed in claim 1 wherein, The number of the magnetic elements is multiple, and the multiple magnetic elements are sequentially and spacedly distributed in the bottom of the positioning groove.

3. The easy to locate negative spot welder for lithium battery rework as claimed in claim 1 wherein, The side positioning body is detachably connected to the supporting table, and / or The supporting table is detachably connected to the pedestal, and / or The supporting table is in an arched structure.

4. The easy to locate negative spot welder for lithium battery rework as claimed in claim 1 wherein, The negative electrode spot welding machine for lithium battery repair product easy to position further comprises a sliding assembly, the sliding assembly comprises a sliding rail and a sliding mounting seat, the sliding mounting seat is slidingly connected to the sliding rail through a sliding block, and the sliding rail is fixedly installed on the mounting frame.

5. The easy-to-locate negative spot welder for lithium battery rework, as claimed in claim 4, wherein, An electrode chuck is arranged on the sliding mounting seat. The first welding electrode comprises a point contact electrode body, and the electrode chuck is used for clamping the point contact electrode body.

6. The easy-to-locate negative spot welder for lithium battery rework, as claimed in claim 5, wherein, The first welding electrode further comprises a welding needle, one end of the welding needle is inserted into a roll core hole of the battery roll core of the steel shell, one end of the welding needle abuts against the negative electrode lug, and the other end of the welding needle is arranged in alignment with the point contact electrode body.

7. The easy to locate negative spot welder for lithium battery rework as claimed in claim 5 wherein, The negative electrode spot welding machine for lithium battery repair product easy to position further comprises a telescopic air cylinder, the telescopic air cylinder is fixedly installed on the mounting frame, and the telescopic end of the telescopic air cylinder is fixedly connected with the sliding mounting seat.

8. The easy to locate negative spot welder for lithium battery rework as claimed in claim 6 wherein, The center axis of the point contact electrode body, the center axis of the welding needle, the center axis of the positioning groove and the center axis of the second welding electrode all coincide with a same vertical center line.

9. The easy to locate negative spot welder for lithium battery rework as claimed in claim 1 wherein, The second welding electrode sequentially penetrates through the pedestal and the supporting table to below the positioning groove, and the end surface of the second welding electrode is flush with the end surface of the supporting table.

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