Positioning jig and device for pole lug welding

Abstract

The utility model provides a positioning jig and device for tab welding. The positioning jig for pole lug welding comprises a base, a positioning column body and a magnetic piece. The base is arranged on a welding seat of ultrasonic welding equipment; the small end of the positioning column body is connected with the base, the large end of the positioning column body is convexly arranged at the top of the base, a positioning hole is formed in the end surface of the large end of the positioning column body, and the aperture of the positioning hole is equal to the diameter of a convex steel cap on the positive electrode cap; the magnetic piece is embedded in the hole bottom of the positioning hole; and the steel cap is placed in the positioning hole so as to position the positive electrode cap on the positioning column body. The positive electrode cap is reliably adsorbed on the positioning column body under the action of magnetic force of the magnetic part, so that the positive electrode cap is quickly positioned, and a production worker can make one end of a tab abut against a welding area of the cap for ultrasonic welding, so that the convenience of positioning the positive electrode cap on the positioning jig by the production worker can be effectively improved, and the production efficiency is improved. Therefore, the tab welding efficiency of production personnel is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tab welding, particularly to a positioning jig for tab welding and a device thereof. BACKGROUND

[0002] The cap is a component of a cylindrical battery assembly, located at the top of the cylindrical battery, and is usually used as the positive electrode of the cylindrical battery. Its main function is to protect the inside of the battery and serve as an external interface of the battery, and the tab is a bridge connecting the battery cell and the cap. In the production process of the cylindrical battery, one end of the tab needs to be welded to the cap.

[0003] Currently, some new energy battery manufacturers usually use ultrasonic welding (referred to as ultrasonic welding) to weld the tab and the cap. Specifically, a positioning jig installed on the welding seat of the ultrasonic welding device is used to position the cap. The production personnel need to manually place the cap on the positioning jig in advance, and then the production personnel abut one end of the tab against the welding area of the cap, and then the welding head of the ultrasonic welding device is aligned with the welding area for ultrasonic welding.

[0004] However, the positioning jigs used in the prior art generally have the problem of complicated positioning operation process, that is, the positioning convenience of placing the cap on the positioning jig is poor, which reduces the efficiency of the production personnel in ultrasonic welding of the tab and the cap. UTILITY MODEL CONTENT

[0005] The utility model aims to overcome the deficiencies in the prior art, provide a positioning jig for tab welding, which can effectively improve the convenience of positioning the positive cap on the positioning jig for the production personnel, thereby effectively improving the efficiency of the production personnel in welding the tab.

[0006] The utility model aims to achieve the following technical solutions:

[0007] A positioning jig for tab welding is installed on the welding seat of an ultrasonic welding device, comprising:

[0008] A base is provided on the welding seat of the ultrasonic welding device;

[0009] A positioning column is connected to the base at the small end, and the large end of the positioning column protrudes from the top of the base. A positioning hole is formed in the end face of the large end of the positioning column, and the diameter of the positioning hole is equal to the diameter of the steel cap protruding from the positive cap.

[0010] A magnetic part is embedded in the bottom of the positioning hole. The steel cap is placed in the positioning hole to position the positive cap on the positioning column.

[0011] In one of the embodiments, the positioning column is a plastic part; and / or,

[0012] The positioning column is an integrally formed structure.

[0013] In one of the embodiments, the small end of the positioning column is detachably connected with the base.

[0014] In one of the embodiments, the base comprises a bottom plate, the bottom plate is provided with a first through hole and a second through hole; the bottom plate is connected with the welding seat of the ultrasonic welding equipment through screwing the bottom plate into the first through hole or the second through hole.

[0015] In one of the embodiments, the base further comprises a clamping body, the clamping body is arranged on the bottom plate, one end of the clamping body away from the bottom plate is formed with a first clamping part and a second clamping part; the first clamping part and the second clamping part jointly enclose a clamping hole, and the small end of the positioning column is arranged in the clamping hole.

[0016] In one of the embodiments, the first clamping part and the second clamping part jointly enclose a clearance space and a stress notch in communication with the clamping hole, and the clearance space and the stress notch penetrate through both sides of the clamping body along a preset direction.

[0017] In one of the embodiments, the clamping body is screw-connected with the bottom plate.

[0018] In one of the embodiments, one end of the first clamping part away from the bottom plate is screw-connected with one end of the second clamping part away from the bottom plate.

[0019] In one of the embodiments, the cross section of the clamping body is T-shaped; and / or,

[0020] The clamping body is an integrally formed structure.

[0021] A positioning device for tab welding, comprising the positioning jig for tab welding according to any one of the embodiments.

[0022] Compared with the prior art, the utility model has at least the following advantages:

[0023] The magnetic piece is embedded at the bottom of the positioning hole, so when the positive cap is needed to be placed on the positioning column for positioning, the production personnel only need to put the protruding steel cap on the positive cap into the positioning hole on the positioning column, and the positive cap is reliably adsorbed on the positioning column under the magnetic force of the magnetic piece, so that the positive cap is quickly positioned, and then the production personnel abuts one end of the tab against the welding area of the cap for ultrasonic welding. The positioning jig for tab welding can effectively improve the convenience of the production personnel in positioning the positive cap on the positioning jig, avoids the problem of complicated positioning process of the traditional positioning jig, and effectively improves the efficiency of the production personnel in welding the tab. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] Figure 1 It is an embodiment of the structure of the positioning jig for tab welding.

[0026] Figure 2 It is Figure 1 It is a partial structure explosion schematic view of the positioning jig for tab welding.

[0027] Figure 3 It is Figure 2 It is a partial enlarged view of A of the positioning jig for tab welding.

[0028] Figure 4 It is a structure schematic view of the positive cap.

[0029] Reference signs: positioning jig for tab welding 10; base 100; bottom plate 110; first through hole 1101; first through hole 1102; clamping body 120; first clamping part 1210; second clamping part 1220; clamping hole 101; clearance 102; stress notch 103; positioning column 200; positioning hole 201; positive cap 300; steel cap 310; magnetic piece 400. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0031] 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 intervening elements can also be present. Where, when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not meant to be limiting.

[0032] 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.

[0033] The positioning jig for tab welding is installed on the welding seat of the ultrasonic welding device, and the positioning jig for tab welding comprises a base, a positioning column body and a magnetic piece. The base is arranged on the welding seat of the ultrasonic welding device; the small end of the positioning column body is connected with the base, the large end of the positioning column body is protruded on the top of the base, the end face of the large end of the positioning column body is provided with a positioning hole, the hole diameter of the positioning hole is equal to the diameter of the steel cap protruded on the positive cap; the magnetic piece is embedded in the bottom of the positioning hole; the steel cap is placed in the positioning hole to position the positive cap on the positioning column body.

[0034] Please refer to Figures 1 to 4 In order to better understand the positioning jig for tab welding 10 of the present application, the positioning jig for tab welding 10 is further explained as follows:

[0035] The positioning jig for tab welding 10 of an embodiment is installed on the welding seat of the ultrasonic welding device, and the positioning jig for tab welding 10 comprises a base 100, a positioning column body 200 and a magnetic piece 400. The base 100 is arranged on the welding seat of the ultrasonic welding device; the small end of the positioning column body 200 is connected with the base 100, the large end of the positioning column body 200 is protruded on the top of the base 100, the end face of the large end of the positioning column body 200 is provided with a positioning hole 201, the hole diameter of the positioning hole 201 is equal to the diameter of the steel cap 310 protruded on the positive cap 300; the magnetic piece 400 is embedded in the bottom of the positioning hole 201; the steel cap 310 is placed in the positioning hole 201 to position the positive cap 300 on the positioning column body 200.

[0036] In the embodiment, the magnetic member 400 is embedded at the bottom of the positioning hole 201, so when the positive cap 300 needs to be placed on the positioning column 200 for positioning, the production personnel only needs to place the protruding steel cap 310 on the positive cap 300 into the positioning hole 201 on the positioning column 200, and under the magnetic force of the magnetic member 400, the positive cap 300 is reliably adsorbed on the positioning column 200, realizing the rapid positioning of the positive cap 300, so that the production personnel abuts one end of the tab against the welding area of the cap for ultrasonic welding. The positioning jig 10 for tab welding of the utility model can effectively improve the convenience of the production personnel in positioning the positive cap 300 on the positioning jig, avoid the problem of complicated positioning process of the traditional positioning jig, and effectively improve the efficiency of the production personnel in welding the tab.

[0037] As shown in Figure 1 and Figure 3 shown, in one embodiment, the positioning column 200 is a plastic member. In this way, the processing and manufacturing of the positioning column 200 are facilitated.

[0038] It should be noted that in the embodiment, the magnetic member 400 is a cylindrical magnet. In the actual manufacturing process of the positioning column 200, the cylindrical magnet can be pre-positioned in the forming cavity of the injection mold, and then the plastic is coated on the outer peripheral wall of the magnet through the injection molding process, so that the magnet is embedded in the bottom of the positioning hole 201.

[0039] As shown in Figure 3 shown, in one embodiment, the positioning column 200 is an integral molding structure. In this way, the positioning column 200 has good structural strength.

[0040] As shown in Figure 3 shown, in one embodiment, the small end of the positioning column 200 is detachably connected with the base 100. In this way, the disassembly and assembly of the positioning column 200 are facilitated.

[0041] As shown in Figure 1 shown, in one embodiment, the base 100 includes a bottom plate 110, the bottom plate 110 is provided with a first through hole 1101 and a second through hole 1102; the bottom plate 110 is connected to the welding seat of the ultrasonic welding equipment through the first through hole 1101 or the second through hole 1102. In this way, the bottom plate 110 can be fixedly installed on the welding seat of the ultrasonic welding equipment, effectively improving the stability of the installation of the base 100, thereby ensuring the stability of the welding process of the positive cap 300, and improving the welding accuracy of the positive cap 300 and the tab.

[0042] As shown in Figures 1 to 3As shown, in one of the embodiments, the base 100 further comprises a clamping body 120, which is arranged on the bottom plate 110, and the end of the clamping body 120 away from the bottom plate 110 is formed with a first clamping part 1210 and a second clamping part 1220; the first clamping part 1210 and the second clamping part 1220 jointly enclose a clamping hole 101, and the small end of the positioning column body 200 is arranged in the clamping hole 101. In one of the embodiments, the first clamping part 1210 and the second clamping part 1220 further jointly enclose a clearance gap 102 and a stress notch 103 which are in communication with the clamping hole 101, and the clearance gap 102 and the stress notch 103 both penetrate through the two sides of the clamping body 120 along a preset direction.

[0043] It can be understood that, since the first clamping part 1210 and the second clamping part 1220 further jointly enclose the clearance gap 102 and the stress notch 103 which are in communication with the clamping hole 101, the first clamping part 1210 and the second clamping part 1220 can be opened and closed to clamp and install the small end of the positioning column body 200 through the clamping hole 101; specifically, the small end of the positioning column body 200 of different specifications is clamped and installed through the clamping hole 101, so as to position the positive cap 300 of the cylindrical battery of different specifications, thereby effectively improving the adaptability of the positioning jig 10 for tab welding. Moreover, through the arrangement of the stress notch 103, the problem of excessive stress concentration at the connection between the first clamping part 1210 and the clamping body 120 and the connection between the second clamping part 1220 and the clamping body 120 is effectively avoided, and the rationality of the structure of the first clamping part 1210 and the second clamping part 1220 is improved.

[0044] It should be noted that, as shown in Figure 1 the preset direction is the direction of the X arrow, that is, in the positive direction of the X arrow or the opposite direction of the X arrow, the clearance gap 102 and the stress notch 103 penetrate from one side of the clamping body 120 to the other side of the clamping body 120.

[0045] As shown in Figure 1 in one of the embodiments, the clamping body 120 is screw-connected with the bottom plate 110. In this way, the clamping body 120 and the bottom plate 110 are convenient to disassemble and assemble.

[0046] As shown in Figure 3 in one of the embodiments, the end of the first clamping part 1210 away from the bottom plate 110 is screw-connected with the end of the second clamping part 1220 away from the bottom plate 110. In this way, by adjusting the tightness of the screw connection, the opening and closing tightness of the first clamping part 1210 and the second clamping part 1220 can be adjusted, so as to adjust the clamping tightness of the small end of the positioning column body 200 in the clamping hole 101, and then the clamping and disassembly of the small end of the positioning column body 200 are facilitated.

[0047] As Figure 1 shown, in one of the embodiments, the cross section of the clamping body 120 is T-shaped.

[0048] As Figure 1 shown, in one of the embodiments, the clamping body 120 is integrally formed. In this way, the clamping body 120 has better structural strength.

[0049] The application also provides a positioning device for tab welding, comprising the positioning jig 10 for tab welding according to any one of the embodiments.

[0050] In the embodiment, the magnetic member is embedded at the bottom of the positioning hole. Therefore, when the positive cap is needed to be placed on the positioning column for positioning, the production personnel only need to place the steel cap protruding on the positive cap into the positioning hole on the positioning column, and the positive cap is reliably adsorbed on the positioning column under the magnetic force of the magnetic member, so that the positive cap is quickly positioned, and the production personnel can abut one end of the tab against the welding area of the cap for ultrasonic welding. The positioning device for tab welding can effectively improve the convenience of the production personnel in positioning the positive cap on the positioning jig, avoid the problem of complicated positioning process of the traditional positioning jig, and effectively improve the efficiency of the production personnel in welding the tab.

[0051] Compared with the prior art, the utility model has at least the following advantages:

[0052] The magnetic member is embedded at the bottom of the positioning hole. Therefore, when the positive cap is needed to be placed on the positioning column for positioning, the production personnel only need to place the steel cap protruding on the positive cap into the positioning hole on the positioning column, and the positive cap is reliably adsorbed on the positioning column under the magnetic force of the magnetic member, so that the positive cap is quickly positioned, and the production personnel can abut one end of the tab against the welding area of the cap for ultrasonic welding. The positioning jig for tab welding can effectively improve the convenience of the production personnel in positioning the positive cap on the positioning jig, avoid the problem of complicated positioning process of the traditional positioning jig, and effectively improve the efficiency of the production personnel in welding the tab.

[0053] The above-mentioned embodiments only express several implementation manners 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 positioning jig for tab welding, which is installed on a welding seat of an ultrasonic welding apparatus, characterized by, The utility model relates to an ultrasonic welding positioning jig for the positive lug, comprising: a base arranged on a welding seat of the ultrasonic welding device; a positioning column, a small end of which is connected with the base, and a large end of which protrudes from a top of the base, and an end face of the large end of the positioning column is provided with a positioning hole, a diameter of the positioning hole being equal to a diameter of a steel cap protruding from a positive cap; a magnetic piece embedded in a bottom of the positioning hole; the steel cap is placed in the positioning hole to position the positive cap on the positioning column.

2. The positioning jig for tab welding according to claim 1, characterized by, The positioning column is a plastic piece; and / or, The positioning column is an integrally formed structure.

3. The positioning jig for tab welding according to claim 1, characterized by The small end of the positioning column is detachably connected with the base.

4. The positioning jig for tab welding according to claim 1, characterized by The base comprises a bottom plate provided with a first through hole and a second through hole; the bottom plate is connected with the welding seat of the ultrasonic welding device by being screwed through the first through hole or the second through hole.

5. The positioning jig for tab welding according to claim 4, characterized by The base further comprises a clamping body arranged on the bottom plate, an end of the clamping body away from the bottom plate being formed with a first clamping part and a second clamping part; the first clamping part and the second clamping part jointly enclose a clamping hole, and the small end of the positioning column is arranged in the clamping hole.

6. The positioning jig for tab welding according to claim 5, characterized by The first clamping part and the second clamping part jointly enclose a clearance avoiding space and a stress notch in communication with the clamping hole, and the clearance avoiding space and the stress notch both penetrate through two sides of the clamping body along a preset direction.

7. The positioning jig for tab welding according to claim 5, characterized by The clamping body is screwed with the bottom plate.

8. The positioning jig for tab welding according to claim 5, characterized by An end of the first clamping part away from the bottom plate is screwed with an end of the second clamping part away from the bottom plate.

9. The positioning jig for tab welding according to claim 5, characterized by The clamping body has a T-shaped cross section; and / or, The clamping body is an integrally formed structure.

10. A positioning device for tab welding, characterized by, The utility model relates to an ultrasonic welding positioning jig for the positive lug, comprising: a base arranged on a welding seat of the ultrasonic welding device; a positioning column, a small end of which is connected with the base, and a large end of which protrudes from a top of the base, and an end face of the large end of the positioning column is provided with a positioning hole, a diameter of the positioning hole being equal to a diameter of a steel cap protruding from a positive cap; a magnetic piece embedded in a bottom of the positioning hole; the steel cap is placed in the positioning hole to position the positive cap on the positioning column. The positioning column is a plastic piece; and / or, The positioning column is an integrally formed structure. The small end of the positioning column is detachably connected with the base. The base comprises a bottom plate provided with a first through hole and a second through hole; the bottom plate is connected with the welding seat of the ultrasonic welding device by being screwed through the first through hole or the second through hole. The base further comprises a clamping body arranged on the bottom plate, an end of the clamping body away from the bottom plate being formed with a first clamping part and a second clamping part; the first clamping part and the second clamping part jointly enclose a clamping hole, and the small end of the positioning column is arranged in the clamping hole. The first clamping part and the second clamping part jointly enclose a clearance avoiding space and a stress notch in communication with the clamping hole, and the clearance avoiding space and the stress notch both penetrate through two sides of the clamping body along a preset direction. The clamping body is screwed with the bottom plate. An end of the first clamping part away from the bottom plate is screwed with an end of the second clamping part away from the bottom plate. The clamping body has a T-shaped cross section; and / or, The clamping body is an integrally formed structure.

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