Battery pin welding device

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery pin welding device. The battery pin welding device comprises a battery jig, a first electrifying mechanism and a second electrifying mechanism, wherein a limiting groove for accommodating a battery is formed in the battery jig; the first electrifying mechanism comprises a first electrifying piece, the first electrifying piece is located above the battery jig, and the battery jig and the first electrifying piece can be close to or away from each other; the second electrifying mechanism comprises a guide needle fixing assembly, the guide needle can penetrate through the guide needle fixing assembly in the vertical direction and is fixed by the guide needle fixing assembly, and the guide needle fixing assembly is located above the first electrifying piece and can be close to the first electrifying piece. According to the battery lead pin welding device, the welding stability of the lead pin can be ensured, and the attractiveness and uniformity of the appearance of a battery after the lead pin is welded are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery lead pin welding device. Background Art

[0002] Lithium ion is a battery with high specific energy among the current chemical power sources, with the advantages of high working voltage, long storage life, wide working temperature range, convenient use and maintenance, strong adaptability, etc. In some special fields, there are very high requirements for battery capacity, battery processing technology and production cost.

[0003] In traditional lithium-ion battery pin welding, employees first place the pins and batteries in a special spot welding mold, and then use resistance welding equipment to spot weld the pins and batteries. On the one hand, due to the instability of the resistance welding spot welding equipment, the spot welding is not firm and the battery leaks, which affects the normal use of the battery. On the other hand, due to the specific size and diameter of the battery, poor welding results in the formation of weld packs and weld nodules, which affects the aesthetics of the welding. For specific battery use environments, there are extremely high technical requirements for personnel operation methods, which is not conducive to batch operation and process control.

[0004] Therefore, it is urgent to design a battery lead pin welding device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a battery lead pin welding device, which can ensure the stability of the lead pin welding and ensure the beauty and uniformity of the battery appearance after the lead pins are welded.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Battery pin welding device, comprising:

[0008] A battery fixture having a limiting groove for accommodating the battery;

[0009] A first power supply mechanism, comprising a first power supply member, wherein the first power supply member is located above the battery fixture, and the battery fixture and the first power supply member can be close to or away from each other;

[0010] The second energizing mechanism comprises a guide needle fixing assembly, through which the guide needle can pass vertically and be fixed, and the guide needle fixing assembly is located above the first energizing member and can approach the first energizing member.

[0011] As an optional solution, the battery lead pin welding device further includes:

[0012] A bottom plate and a first driving member, wherein the first driving member is mounted on the bottom plate, the battery fixture is mounted on an output end of the first driving member, and the first driving member can drive the battery fixture to move in a vertical direction;

[0013] A vertical mounting seat is mounted on the base plate and extends in a vertical direction, and the first power supply mechanism is mounted on the vertical mounting seat.

[0014] As an optional solution, the second power supply mechanism further includes a second driving member, which is mounted on the vertical mounting seat and located on the upper side of the first power supply mechanism, and the second driving member can output movement in the vertical direction. The needle guide fixing assembly includes:

[0015] A third driving member connected to the output end of the second driving member;

[0016] The second power supply member is connected to the output end of the second driving member. The second power supply member has a clamping hole with a notch on one side along the vertical direction. The third driving member is used to push the outer wall of the second power supply member to shrink the clamping hole to clamp and fix the lead pin.

[0017] As an optional solution, the output end of the second driving member is stepped, and the output end of the second driving member is connected to a buffer assembly, and the buffer assembly includes:

[0018] A first connecting member, an end of which is provided with a movable groove, an end of the movable groove is provided with a protrusion protruding toward the inside of the movable groove, and the protrusion is limited to a step surface at the output end of the second driving member;

[0019] The buffer member has one end abutting against the output end of the second driving member and the other end abutting against the bottom of the movable groove.

[0020] As an optional solution, the first energizing mechanism further includes a guide assembly, and the guide assembly includes:

[0021] A guide rail extending in a vertical direction and mounted on the vertical mounting seat;

[0022] The sliding block is mounted on the first connecting member and is slidably matched with the guide rail.

[0023] As an optional solution, the above-mentioned guide needle fixing assembly also includes:

[0024] A second connecting member connected to the first connecting member;

[0025] The U-shaped member is connected to the side of the second connecting member away from the first connecting member. The third driving member is installed in the U-shaped member. The two ends of the second power supply member are respectively connected to the two free ends of the U-shaped member.

[0026] As an optional solution, the guide pin fixing assembly further includes a second connecting member, which is detachably connected to the second conducting member, is plate-shaped, and one end of the second connecting member is used to be connected to the positive electrode or the negative electrode.

[0027] As an optional solution, the second current-carrying member further has a through hole, the through hole is connected to the clamping hole via a slit, and the slit and the notch are respectively located at two ends of the diameter of the clamping hole.

[0028] As an optional solution, the upper side of the clamping hole is a concave first conical surface; and / or

[0029] The second conducting member is provided with a conical protrusion on one side facing the first conducting member, the first conducting member is provided with a through hole, the through hole is a concave second conical surface on the side facing the conical protrusion, and the angle between the conical protrusion and the vertical direction is smaller than the angle between the first conical surface and the vertical direction.

[0030] As an optional solution, the side of the through hole facing the battery fixture is a concave third conical surface, and the pole of the battery can abut against the third conical surface.

[0031] The beneficial effects of the utility model are:

[0032] The utility model provides a battery lead pin welding device, which first puts the battery into a limiting groove, and then passes the lead pin through a lead pin fixing assembly, at which time, the lead pin and the end of the battery are in contact, and then the battery fixture and the first power-carrying member are close to each other until the first power-carrying member and the end of the battery are in contact, and then the lead pin fixing assembly fixes the lead pin, and then the first power-carrying member and the second power-carrying mechanism are electrically connected to the positive and negative electrodes of the welding power supply respectively to form a loop, and the lead pin and the end of the battery can be melt-welded in place by connecting the loop, because the welding position is due to the high temperature generated by the passage of current and then the lead pin and the end of the battery are welded, no welding bag or welding nodule will be formed, and the appearance is more beautiful, and during welding, the lead pin is fixed by the lead pin fixing assembly, the welding position is fixed, the uniformity of the product is improved, and during welding, the lead pin and the end of the battery are in contact, no cold welding phenomenon will occur, and the welding stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a battery lead pin welding device provided by an embodiment of the utility model;

[0034] Figure 2 It is a structural schematic diagram of a third driving member, a second energizing member and a first energizing member provided in an embodiment of the utility model;

[0035] Figure 3 yes Figure 2A cross-sectional view at the clamping hole;

[0036] Figure 4 It is a structural schematic diagram of a second power-on mechanism provided in an embodiment of the utility model.

[0037] In the figure:

[0038] 10. Battery fixture; 11. Limiting groove; 20. First power supply mechanism; 21. First power supply member; 211. Perforation; 212. Second conical surface; 213. Third conical surface; 22. Reinforcement ribs; 23. Mounting plate;

[0039] 30. Second energizing mechanism; 31. Lead pin fixing assembly; 311. Third driving member; 312. Second energizing member; 3121. Clamping hole; 3122. Notch; 3123. Slit; 3124. Through hole; 3125. First conical surface; 3126. Conical protrusion; 313. Second connecting member; 314. U-shaped member; 32. Second driving member; 321. Step surface;

[0040] 33. Buffer assembly; 331. First connecting member; 3311. Movable groove; 3312. Protrusion; 332. Buffer member; 34. Guide assembly; 341. Guide rail; 342. Slider;

[0041] 40. Bottom plate; 50. First driving member; 60. Vertical mounting seat; 200. Battery; 210. Pole; 300. Lead pin. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] This embodiment provides a battery lead pin welding device, which can ensure the stability of the lead pin 300 welding and ensure the aesthetic and uniform appearance of the battery 200 after welding the lead pin 300. Figure 1 and Figure 2 As shown, the battery pin welding device includes a battery fixture 10, a first power-on mechanism 20 and a second power-on mechanism 30. The battery fixture 10 is provided with a limiting groove 11 for accommodating a battery 200. The first power-on mechanism 20 includes a first power-on member 21, which is located above the battery fixture 10. The battery fixture 10 and the first power-on member 21 can approach or move away from each other. The second power-on mechanism 30 includes a pin fixing assembly 31. The pin 300 can pass through the pin fixing assembly 31 in a vertical direction and be fixed by the pin fixing assembly 31. The pin fixing assembly 31 is located above the first power-on member 21 and can approach the first power-on member 21.

[0047] The battery lead pin welding device mentioned above first puts the battery 200 into the limiting groove 11, and then passes the lead pin 300 through the lead pin fixing assembly 31. At this time, the lead pin 300 and the end of the battery 200 are abutted, and then the battery fixture 10 and the first power-carrying member 21 are close to each other until the first power-carrying member 21 and the end of the battery 200 are abutted, and then the lead pin fixing assembly 31 fixes the lead pin 300, and then the first power-carrying member 21 and the second power-carrying mechanism 30 are electrically connected to the positive and negative electrodes of the welding power supply respectively to form a loop. When the loop is connected, the lead pin 300 and the end of the battery 200 can be melted and welded in place. Since the welding position is due to the high temperature generated by the passage of current, the lead pin 300 and the end of the battery 200 are welded, no welding bag or welding nodule will be formed, and the appearance is more beautiful. During welding, the lead pin 300 is fixed by the lead pin fixing assembly 31, the welding position is fixed, the uniformity of the product is improved, and during welding, the lead pin 300 and the end of the battery 200 are abutted, no cold welding phenomenon will occur, and the welding stability is good.

[0048] It should be noted that a battery 200 needs to be welded with two pins, that is, one pin is welded to the positive electrode 210 of the battery 200, and the other pin is welded to the negative electrode of the battery 200. It is only necessary to open a hole at the bottom of the limiting groove 11 to allow the welded pin to pass through. In order to facilitate the passage of the pin when the battery 200 changes direction, the hole has a channel connected to the hole.

[0049] Alternatively, if Figure 1 As shown, the battery lead pin welding device also includes a base plate 40, a first driving member 50 and a vertical mounting seat 60, wherein the first driving member 50 is mounted on the base plate 40, the battery fixture 10 is mounted on the output end of the first driving member 50, and the first driving member 50 can drive the battery fixture 10 to move in the vertical direction; the vertical mounting seat 60 is mounted on the base plate 40 and extends in the vertical direction, and the first power-on mechanism 20 is mounted on the vertical mounting seat 60. The provision of the base plate 40 can improve the integrity of the entire battery lead pin welding device, the first driving member 50 can make the battery fixture 10 and the first power-on member 21 close to or away from each other, and the vertical mounting seat 60 can serve as the installation position of the first power-on mechanism 20. In other embodiments, the battery fixture 10 may be stationary, and the first power-on member 21 may be mounted on the output end of the first driving member 50, which is not limited here.

[0050] Alternatively, if Figure 1 and Figure 2As shown, the second power-on mechanism 30 also includes a second driving member 32, which is installed on the vertical mounting seat 60 and is located on the upper side of the first power-on mechanism 20. The second driving member 32 can output movement in the vertical direction. The guide needle fixing assembly 31 includes a third driving member 311 and a second power-on member 312. The third driving member 311 is connected to the output end of the second driving member 32; the second power-on member 312 is connected to the output end of the second driving member 32. The second power-on member 312 has a clamping hole 3121 with a notch 3122 on one side along the vertical direction. The third driving member 311 is used to push the outer wall of the second power-on member 312 to shrink the clamping hole 3121 to clamp and fix the guide needle 300. Through the above-mentioned arrangement, the second driving member 32 can drive the third driving member 311 and the second power-carrying member 312 to move in the vertical direction at the same time. When the second power-carrying member 312 drops to abut against the end of the battery 200, the output end of the third driving member 311 extends out, and the output end of the third driving member 311 abuts against the outer wall of the second power-carrying member 312. Due to the arrangement of the notch 3122, the side of the second power-carrying member 312 close to the third driving member 311 is pressurized, so that the clamping hole 3121 shrinks, and the clamping hole 3121 clamps the lead pin 300 and fixes it. The third driving member 311 also keeps pressing the second power-carrying member 312 during the welding process to ensure the stability of the welding of the lead pin 300.

[0051] Alternatively, if Figure 2 As shown, the second power supply member 312 also has a through hole 3124, and the through hole 3124 is connected to the clamping hole 3121 through a slit 3123, and the slit 3123 and the notch 3122 are respectively located at the two ends of the diameter of the clamping hole 3121. Through the above arrangement, the second power supply member 312 is deformed toward the side of the third driving member 311 with the through hole 3124 as the rotation axis, and the arrangement of the slit 3123 makes the clamping hole 3121 and the through hole 3124 have a certain distance, so that the hole wall position corresponding to the clamping hole 3121 is easier to deform, thereby clamping and fixing the guide pin 300.

[0052] Alternatively, if Figure 2 As shown, the upper side of the clamping hole 3121 is a concave first conical surface 3125 , which can guide the insertion of the guide needle 300 and facilitate the insertion of the guide needle 300 from the top of the clamping hole 3121 .

[0053] Alternatively, see Figure 3The second conducting member 312 has a conical protrusion 3126 protruding from one side facing the first conducting member 21. The first conducting member 21 has a through hole 211. The side of the through hole 211 facing the conical protrusion 3126 is a concave second conical surface 212. The angle between the conical protrusion 3126 and the vertical direction is smaller than the angle between the first conical surface 3125 and the vertical direction. Through the above arrangement, on the one hand, the angle of the second conical surface 212 is greater than the angle of the conical protrusion 3126, so that when the conical protrusion 3126 descends, the second conical surface 212 and the profile of the conical protrusion 3126 have a certain angle, which has a better avoidance effect and prevents the two from contacting and causing a short circuit; on the other hand, the arrangement of the second conical surface 212 can also guide the insertion of the guide pin 300.

[0054] Of course, in another embodiment, in order to ensure that the second current supply member 312 and the first current supply member 21 are completely disconnected, an insulating member may be added to the outer side of the conical protrusion 3126 .

[0055] Alternatively, if Figure 3 As shown, the side of the through hole 211 facing the battery fixture 10 is a concave third conical surface 213, and the pole 210 of the battery 200 can abut against the third conical surface 213. Through the above arrangement, it is possible to ensure that the pole 210 of the battery 200 or the negative pole of the battery 200 is in close contact with the first power supply member 21, and avoid the pole 210 of the battery 200 or the negative pole of the battery 200 contacting the plane to cause a virtual electrical connection.

[0056] Alternatively, if Figure 4 As shown, the output end of the second driving member 32 is stepped to form a step surface 321, and the output end of the second driving member 32 is connected to a buffer assembly 33, which includes a first connecting member 331 and a buffer member 332. The end of the first connecting member 331 is provided with a movable groove 3311, and the end of the movable groove 3311 is provided with a protrusion 3312 protruding toward the inside of the movable groove 3311, and the protrusion 3312 is limited to the step surface 321 of the output end of the second driving member 32; one end of the buffer member 332 abuts against the output end of the second driving member 32, and the other end abuts against the bottom of the movable groove 3311. Through the above arrangement, when the second driving member 32 drives the guide pin fixing assembly 31 downward, excessive downward pressure is avoided to damage or deform the first energizing member 21.

[0057] Alternatively, if Figure 4 As shown, the first power supply mechanism 20 further includes a guide assembly 34, which includes a guide rail 341 and a slider 342. The guide rail 341 extends in the vertical direction and is mounted on the vertical mounting seat 60; the slider 342 is mounted on the first connecting member 331 and slidably cooperates with the guide rail 341. Through the above arrangement, the accuracy of the driving direction of the second driving member 32 is ensured, and the position of the first connecting member 331 is prevented from moving.

[0058] Alternatively, if Figure 1 As shown, the guide pin fixing assembly 31 further includes a second connecting member 313 and a U-shaped member 314, wherein the second connecting member 313 is connected to the first connecting member 331; the U-shaped member 314 is connected to the side of the second connecting member 313 away from the first connecting member 331, the third driving member 311 is installed in the U-shaped member 314, and the two ends of the second power supply member 312 are respectively connected to the two free ends of the U-shaped member 314. Through the above arrangement, space is provided for the installation of the third driving member 311, and at the same time, both ends of the second power supply member 312 are fixed, so that the second power supply member 312 is not easily deformed when being squeezed by the third driving member 311.

[0059] Alternatively, if Figure 1 As shown, the first power-on mechanism 20 also includes a mounting plate 23 and two reinforcing ribs 22. The mounting plate 23 is connected to the vertical mounting seat 60. The two reinforcing ribs 22 are respectively connected to both ends of the mounting plate 23. Both ends of the first power-on component 21 are respectively connected to the two reinforcing ribs 22. Through the above arrangement, the installation stability of the first power-on component 21 is improved, so that the first power-on component 21 is more stable and less likely to deform when subjected to pressure from the second power-on component 312.

[0060] Alternatively, if Figure 1 As shown, the guide pin fixing assembly 31 also includes a second connecting member 313, which is detachably connected to the second power supply member 312, and is plate-shaped, and one end of the second connecting member 313 is used to connect to the positive electrode or the negative electrode. Through the above arrangement, the second connecting member 313 is connected to the electrode.

[0061] It should be noted that, in this embodiment, the first conducting member 21 is a cathode electrode, and the second conducting member 312 and the second connecting member 313 are both anode electrodes. In another embodiment, the two can be interchanged, which is not limited here.

[0062] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Battery pin welding device, characterized in that: include: A battery fixture (10) having a limiting groove (11) for accommodating a battery (200); A first power supply mechanism (20) comprising a first power supply member (21), wherein the first power supply member (21) is located above the battery fixture (10), and the battery fixture (10) and the first power supply member (21) can be moved closer to or farther from each other; The second energizing mechanism (30) comprises a guide needle fixing assembly (31), wherein the guide needle (300) can pass through the guide needle fixing assembly (31) in a vertical direction and be fixed by the guide needle fixing assembly (31), and the guide needle fixing assembly (31) is located above the first energizing member (21) and can approach the first energizing member (21).

2. The battery lead pin welding device according to claim 1, characterized in that: The battery lead pin welding device also includes: A base plate (40) and a first driving member (50), wherein the first driving member (50) is mounted on the base plate (40), the battery fixture (10) is mounted on an output end of the first driving member (50), and the first driving member (50) can drive the battery fixture (10) to move in a vertical direction; A vertical mounting seat (60) is mounted on the bottom plate (40) and extends in a vertical direction, and the first power supply mechanism (20) is mounted on the vertical mounting seat (60).

3. The battery lead pin welding device according to claim 2, characterized in that: The second power supply mechanism (30) further comprises a second driving member (32), the second driving member (32) being mounted on the vertical mounting seat (60) and located on the upper side of the first power supply mechanism (20), the second driving member (32) being capable of outputting movement in a vertical direction, and the needle guide fixing assembly (31) comprising: A third driving member (311) connected to an output end of the second driving member (32); The second power supply member (312) is connected to the output end of the second driving member (32), and the second power supply member (312) is provided with a clamping hole (3121) with a notch (3122) on one side along the vertical direction. The third driving member (311) is used to push the outer wall of the second power supply member (312) to shrink the clamping hole (3121) so as to clamp and fix the guide pin (300).

4. The battery lead pin welding device according to claim 3, characterized in that: The output end of the second driving member (32) is in a step shape, and the output end of the second driving member (32) is connected to a buffer component (33), and the buffer component (33) comprises: A first connecting member (331) has a movable groove (3311) formed at an end thereof, a protrusion (3312) protruding from the end of the movable groove (3311) toward the inside of the movable groove (3311), and the protrusion (3312) is located on a step surface (321) at the output end of the second driving member (32); The buffer member (332) has one end abutting against the output end of the second driving member (32) and the other end abutting against the bottom of the movable groove (3311).

5. The battery lead pin welding device according to claim 4, characterized in that: The first energizing mechanism (20) further comprises a guide assembly (34), wherein the guide assembly (34) comprises: A guide rail (341) extending in a vertical direction and mounted on the vertical mounting seat (60); A sliding block (342) is mounted on the first connecting member (331) and is slidably matched with the guide rail (341).

6. The battery lead pin welding device according to claim 4, characterized in that: The guide needle fixing assembly (31) further comprises: A second connecting member (313) connected to the first connecting member (331); The U-shaped member (314) is connected to a side of the second connecting member (313) facing away from the first connecting member (331), the third driving member (311) is installed in the U-shaped member (314), and the two ends of the second power supply member (312) are respectively connected to the two free ends of the U-shaped member (314).

7. The battery lead pin welding device according to claim 6, characterized in that: The guide pin fixing assembly (31) further comprises a second connecting member (313), wherein the second connecting member (313) is detachably connected to the second current-carrying member (312), the second connecting member (313) is plate-shaped, and one end of the second connecting member (313) is used to be connected to the positive electrode or the negative electrode.

8. The battery lead pin welding device according to any one of claims 3 to 7, characterized in that: The second current-carrying member (312) is further provided with a through hole (3124), the through hole (3124) being connected to the clamping hole (3121) via a slit (3123), and the slit (3123) and the notch (3122) are respectively located at two ends of the diameter of the clamping hole (3121).

9. The battery lead pin welding device according to any one of claims 3 to 7, characterized in that: The upper side of the clamping hole (3121) is a concave first conical surface (3125); and / or A conical protrusion (3126) is convexly provided on the side of the second current-carrying member (312) facing the first current-carrying member (21); a through hole (211) is provided on the first current-carrying member (21); a side of the through hole (211) facing the conical protrusion (3126) is a concave second conical surface (212); and an angle between the conical protrusion (3126) and the vertical direction is smaller than an angle between the first conical surface (3125) and the vertical direction.

10. The battery lead pin welding device according to claim 9, characterized in that: The side of the through hole (211) facing the battery fixture (10) is a concave third conical surface (213), and the pole (210) of the battery (200) can abut against the third conical surface (213).

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