Cylindrical battery welding device

Abstract

The utility model relates to the technical field of cylindrical battery processing, in particular to a cylindrical battery welding device, which is used for welding a negative tab of a cylindrical battery in a bottom shell and comprises a rack, a clamping mechanism, a driving mechanism and a welding needle. A driving mechanism is adopted to drive an actuating assembly and a welding pin to approach a placing position simultaneously through an adapter plate, and the actuating assembly is utilized to control a rotating seat of a clamping mechanism to rotate so as to drive clamping pieces rotationally mounted on a fixed seat to approach each other to clamp a bottom shell of a cylindrical battery; and the at least three clamping pieces can be controlled to clamp the bottom shell of the cylindrical battery at the same time under the same acting force, so that the clamping area of the bottom shell is increased, the situation that the acting force applied to the bottom shell is too concentrated is avoided, the situation that the bottom shell is crushed is reduced, and the purpose of improving the production yield of the cylindrical battery is achieved.

Description

Technical Field

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

[0002] During the production and processing of cylindrical batteries, the negative electrode ears need to be welded to the bottom shell of the lithium battery. In traditional technologies, such as the utility model patent with patent number: 202321063745.3, a cylindrical lithium battery bottom shell welding device is disclosed, which includes a hollow base, two support rods are fixedly installed on the top of the hollow base, the top of the two support rods are fixedly installed with the same top plate, and the bottom of the top plate is fixedly installed with two cylinders, and the telescopic ends of the two cylinders are fixedly installed with the same lifting plate, and the lifting plate is provided with a welding pin located in the middle of the lifting plate, and fixing mechanisms are provided on both sides of the welding pin. When in use, the bottom shell of the cylindrical lithium battery is placed The bottom shell of the cylindrical lithium battery is placed between two limit clamps, and the negative electrode ear is placed in the bottom shell of the cylindrical lithium battery. The lifting plate is moved downward by the cylinder, driving the welding needle and the auxiliary rod to move downward. The inclined surface at the lower end of the auxiliary rod will first abut against the inclined surface of the auxiliary block, so that the two auxiliary blocks are close to each other to completely press the bottom shell of the cylindrical lithium battery so that it does not move. Then the auxiliary rod continues to move downward, and the welding needle contacts the negative electrode ear in the bottom shell of the cylindrical lithium battery to complete the welding. However, the cylindrical lithium battery bottom shell welding device uses the method of bringing the two auxiliary blocks close to each other to completely press the bottom shell of the cylindrical lithium battery, and the force applied to the bottom shell is too concentrated, which can easily damage the bottom shell, and there is a technical problem of reducing the production yield of cylindrical batteries. Utility Model Content

[0003] Based on this, it is necessary to provide a cylindrical battery welding device to address the technical problem that the force applied to the bottom shell of the cylindrical lithium battery is too concentrated, which can easily damage the bottom shell and reduce the production yield of the cylindrical battery by bringing two auxiliary blocks close to each other.

[0004] A cylindrical battery welding device is used to weld the negative ear of a cylindrical battery in a bottom shell. The cylindrical battery welding device comprises: a frame, a clamping mechanism, a driving mechanism and a welding pin. The frame comprises a base and a support frame connected to the base. The clamping mechanism comprises a fixed seat, a rotating seat and a clamp. The fixed seat is installed in the base and is provided with a placement position. The rotating seat is rotatably connected to the fixed seat and is provided with a spiral groove. One end of the clamp is rotatably connected to the fixed seat, and the other end of the clamp is movably connected to the rotating seat. The number of the clamps is at least three, and each of the clamps is arranged around the placement position. The driving mechanism comprises a driving member, an adapter plate and an actuating assembly. The driving member is installed on the support frame and drives the adapter plate to approach or move away from the placement position. The actuating assembly is installed on the adapter plate and is arranged in cooperation with the spiral groove.

[0005] In one embodiment, the fixing seat includes a seat body and a fixing column, the seat body is provided with the placement position, the number of the fixing columns is multiple, each of the fixing columns is distributed around the placement position on the edge of the seat body, and the clamp is rotatably connected to the fixing column.

[0006] In one of the embodiments, the fixing seat further comprises a positioning ring connected to the seat body, the positioning ring is arranged at the placement position and is provided with a placement groove.

[0007] In one embodiment, the placement groove gradually expands in a direction away from the base body.

[0008] In one embodiment, the rotating seat includes a main body and a movable column connected to the main body, the main body is sleeved with the seat body of the fixed seat and is provided with the spiral groove, the number of the movable columns is the same as the number of the clamps, and the clamps are provided with movable grooves that cooperate with the movable columns.

[0009] In one embodiment, the movable groove is arranged in an arc shape.

[0010] In one embodiment, the clamp is arranged in an arc shape, and the cross section of the clamp along the arc shape is arranged in a Z shape.

[0011] In one embodiment, the actuating assembly includes a connecting rod, a guide block and a guide rod, the connecting rod is mounted on the adapter plate, the guide block is connected to the connecting rod, and the guide rod is connected to the guide block and extends into the spiral groove.

[0012] In one embodiment, the actuating assembly further includes a limit block, a blocking block and an elastic member, the limit block and the blocking block are both connected to the connecting rod, the limit block is arranged at an end of the adapter plate away from the fixed seat, the blocking block is arranged at an end of the adapter plate close to the fixed seat, the elastic member is sleeved on the connecting rod and is arranged between the adapter plate and the blocking block to provide elastic force for the connecting rod to move away from the adapter plate.

[0013] In one embodiment, the number of the actuating components is two, and the two actuating components are respectively disposed on two sides of the fixing base.

[0014] The beneficial effects of the cylindrical battery welding device described in the utility model are as follows: a driving mechanism is used to drive the actuating assembly and the welding needle to approach the placement position at the same time through the adapter plate, and the actuating assembly is used to control the rotation of the rotating seat of the clamping mechanism to drive the various clamps installed on the fixed seat to approach each other to clamp the bottom shell of the cylindrical battery, which is beneficial to control at least three clamps to clamp the bottom shell of the cylindrical battery at the same time under the same force, so as to increase the clamping area of ​​the bottom shell, avoid excessive concentration of the force applied to the bottom shell, reduce the situation of crushing the bottom shell, and achieve the purpose of improving the production yield of the cylindrical battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the cylindrical battery welding device shown in the utility model;

[0016] Figure 2 for Figure 1 A schematic structural diagram of a cylindrical battery welding device in which the clamping mechanism is in an open state;

[0017] Figure 3 for Figure 2 The structural schematic diagram of the clamping mechanism shown is in a clamping state;

[0018] Figure 4 for Figure 2 A schematic structural diagram of a rotating seat of the clamping mechanism shown;

[0019] Figure 5 for Figure 1 A front view of the driving mechanism of the cylindrical battery welding device with the welding needle installed is shown.

[0020] The meanings of the numbers in the accompanying drawings are:

[0021] 100. Cylindrical battery welding device;

[0022] 10. Frame; 11. Base; 12. Support frame;

[0023] 20. Clamping mechanism; 21. Fixed seat; 211. Seat body; 212. Fixed column; 213. Positioning ring; 214. Placement position; 215. Placement groove; 22. Rotating seat; 221. Body; 222. Active column; 223. Spiral groove; 23. Clamp; 231. Active groove; 232. Avoidance groove;

[0024] 30. Driving mechanism; 31. Driving member; 32. Adapter plate; 33. Actuating assembly; 331. Connecting rod; 332. Guide block; 333. Guide rod; 334. Limit block; 335. Stop block; 336. Elastic member;

[0025] 40. Soldering needle. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0032] like Figure 1 As shown, it is a cylindrical battery welding device 100 shown in the present invention, which is used to weld the negative electrode ear of the cylindrical battery into the bottom shell.

[0033] like Figure 1 and Figure 2 As shown, the cylindrical battery welding device 100 includes: a frame 10, a clamping mechanism 20, a driving mechanism 30 and a welding needle 40, wherein the frame 10 is used to install the clamping mechanism 20 and the driving mechanism 30, the clamping mechanism 20 is used to place the bottom shell of the cylindrical battery, and the driving mechanism 30 is used to drive the welding needle 40 to approach the clamping mechanism 20 and control the clamping mechanism 20 to clamp the bottom shell.

[0034] Below, combined Figures 1 to 5 , the above-mentioned cylindrical battery welding device 100 is further explained.

[0035] like Figures 1 to 4As shown, the frame 10 includes a base 11 and a support frame 12 connected to the base 11, and the clamping mechanism 20 includes a fixed seat 21, a rotating seat 22 and a clamp 23, wherein the fixed seat 21 includes a seat body 211, a fixed column 212 and a positioning ring 213, the seat body 211 is installed in the base 11, and is provided with a placement position 214, the number of the fixed columns 212 is multiple, and each fixed column 212 is distributed around the placement position 214 at the edge of the seat body 211, and the positioning ring 213 is connected to the seat body 211 and is arranged at the placement position 214, and the positioning The ring 213 is provided with a placement groove 215, which gradually expands in the direction away from the seat body 211. The bottom shell of the cylindrical battery is placed through the placement groove 215, which is conducive to improving the placement accuracy of the bottom shell of the cylindrical battery before clamping. The rotating seat 22 includes a main body 221 and a movable column 222 connected to the main body 221. The main body 221 is sleeved with the seat body 211 of the fixed seat 21 and is rotatably connected to the seat body 211. The side wall of the main body 221 is provided with a spiral groove 223. The number of the movable column 222 is multiple, and each movable column 222 surrounds the main body 2 The rotating shaft of the fixing seat 21 is set, the number of the clamping members 23 is at least three, each clamping member 23 is set around the placement position 214, one end of each clamping member 23 is rotatably connected to the fixed column 212 of the fixing seat 21, and one end of each clamping member 23 is movably connected to the movable column 222 of the rotating seat 22. The clamping member 23 is provided with a movable groove 231 that cooperates with the movable column 222, and the movable groove 231 is set in an arc shape. Further, the clamping member 23 is set in an arc shape, and the cross section of the clamping member 23 along the arc shape is set in a Z shape. By setting the clamping member 23 in a Z shape , which is conducive to the staggered stacking of multiple clamps 23 so that the contact surface of the clamp 23 and the bottom shell of the cylindrical battery is at the same horizontal plane. Furthermore, in order to facilitate the separation of the movable column 222 from the movable groove 231, the clamp 23 is also provided with an avoidance groove 232 connected to the movable groove 231, and the avoidance groove 232 is provided at one end of the movable groove 231 close to the fixed column 212. When in use, the movable column 222 is controlled to move along the movable groove 231 to the avoidance groove 232, and the movable column 222 can be separated from the movable groove 231 through the avoidance groove 232.

[0036] like Figure 5As shown, the driving mechanism 30 includes a driving member 31, an adapter plate 32 and an actuating assembly 33. The driving member 31 is a hydraulic cylinder. The driving member 31 is mounted on the support frame 12 and drives the adapter plate 32 to approach or move away from the placement position 214. There are two actuating assemblies 33. The two actuating assemblies 33 are respectively arranged on both sides of the fixing seat 21. Each actuating assembly 33 is mounted on the adapter plate 32 and is arranged in cooperation with the spiral groove 223. Specifically, the actuating assembly 33 includes a connecting rod 331 , guide block 332 and guide rod 333, the connecting rod 331 is installed on the adapter plate 32, the guide block 332 is connected to the connecting rod 331, the guide rod 333 is connected to the guide block 332, and extends into the spiral groove 223. When the driving member 31 drives the adapter plate 32 to move, the spiral groove 223 is pushed by the guide rod 333 to drive the rotating seat 22 to rotate, and the rotating rotating seat 22 is used to drive the various clamping members 23 to move closer to or away from each other, so as to clamp the bottom shell of the cylindrical battery.

[0037] Furthermore, if Figure 5 As shown, the actuating assembly 33 also includes a limit block 334, a stop block 335 and an elastic member 336. The limit block 334 and the stop block 335 are both connected to the connecting rod 331. The limit block 334 is arranged at one end of the adapter plate 32 away from the fixed seat 21, and the stop block 335 is arranged at one end of the adapter plate 32 close to the fixed seat 21. The elastic member 336 is sleeved on the connecting rod 331 and is arranged between the adapter plate 32 and the stop block 335 to provide an elastic force for the connecting rod 331 to be away from the adapter plate 32. During the process of the guide rod 333 pushing the spiral groove 223 to drive the rotating seat 22 to rotate, when each clamping member 23 contacts the bottom shell of the cylindrical battery and clamps the bottom shell together, the movable adapter plate 32 can move within the stroke of the elastic member 336 to drive the welding pin 40 on the adapter plate 32 to perform welding operation, thereby avoiding the situation where the bottom shell is clamped due to further movement of the adapter plate 32 when the clamping member 23 clamps the bottom shell.

[0038] The working principle of the cylindrical battery welding device 100 of the utility model is as follows: the bottom shell of the cylindrical battery is placed in the placement groove 215 of the positioning ring 213 of the clamping mechanism 20, the driving member 31 drives the adapter plate 32 to approach the placement position 214, and the connecting rod 331 of the driving assembly 33 drives the guide rod 333 to move in the vertical direction, so as to control the body 221 and the movable column 222 of the rotating seat 22 to rotate through the spiral groove 223 of the rotating seat 22, and the movable column 222 is in the movable groove 231 of the clamping member 23. The adapter plate 32 moves, thereby driving the clamping member 23 to deviate, so as to control the clamping members 23 to approach each other, and then clamp the bottom shell, the adapter plate 32 continues to descend, the elastic member 336 between the adapter plate 32 and the blocking block 335 is compressed, and the adapter plate 32 drives the welding needle 40 to perform the welding operation. After the welding is completed, the driving member 31 drives the adapter plate 32 away from the placement position 214, and drives the actuating assembly 33 to control the rotating seat 22 to rotate in the opposite direction, so that the clamping members 23 are away from each other, thereby releasing the bottom shell and realizing the welding operation of the cylindrical battery.

[0039] The beneficial effects of the cylindrical battery welding device 100 of the utility model are as follows: the driving mechanism 30 is used to drive the actuating assembly 33 and the welding needle 40 to approach the placement position 214 at the same time through the adapter plate 32, and the actuating assembly 33 is used to control the rotation of the rotating seat 22 of the clamping mechanism 20 to drive the various clamps 23 installed on the fixed seat 21 to approach each other to clamp the bottom shell of the cylindrical battery, which is beneficial to control at least three clamps 23 to clamp the bottom shell of the cylindrical battery at the same time under the same force, so as to increase the clamping area of ​​the bottom shell, avoid excessive concentration of the force applied to the bottom shell, reduce the situation of crushing the bottom shell, and achieve the purpose of improving the production yield of the cylindrical battery.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A cylindrical battery welding device, characterized in that: include: A frame, a clamping mechanism, a driving mechanism and a welding needle, the frame includes a base and a support frame connected to the base, the clamping mechanism includes a fixed seat, a rotating seat and a clamping member, the fixed seat is installed in the base and is provided with a placement position, the rotating seat is rotatably connected to the fixed seat and is provided with a spiral groove, one end of the clamping member is rotatably connected to the fixed seat, and the other end of the clamping member is movably connected to the rotating seat, the number of the clamping members is at least three, and each of the clamping members is arranged around the placement position, the driving mechanism includes a driving member, an adapter plate and an actuating assembly, the driving member is installed on the support frame and drives the adapter plate to approach or move away from the placement position, the actuating assembly is installed on the adapter plate and is arranged in cooperation with the spiral groove.

2. The cylindrical battery welding device according to claim 1, characterized in that: The fixing seat includes a seat body and a fixing column. The seat body is provided with the placement position. The number of the fixing columns is multiple. Each of the fixing columns is distributed around the placement position at the edge of the seat body. The clamp is rotatably connected to the fixing column.

3. The cylindrical battery welding device according to claim 2, characterized in that: The fixing seat also includes a positioning ring connected to the seat body, the positioning ring is arranged at the placement position and is provided with a placement groove.

4. The cylindrical battery welding device according to claim 3, characterized in that: The placement groove gradually expands in a direction away from the seat body.

5. The cylindrical battery welding device according to claim 1, characterized in that: The rotating seat includes a body and a movable column connected to the body. The body is sleeved with the fixed seat and is provided with the spiral groove. The number of the movable columns is the same as the number of the clamps. The clamps are provided with movable grooves that cooperate with the movable columns.

6. The cylindrical battery welding device according to claim 5, characterized in that: The movable groove is arranged in an arc shape.

7. The cylindrical battery welding device according to claim 1, characterized in that: The clamping piece is arranged in an arc shape, and a cross section of the clamping piece along the arc shape is arranged in a Z shape.

8. The cylindrical battery welding device according to claim 1, characterized in that: The actuating assembly comprises a connecting rod, a guide block and a guide rod, wherein the connecting rod is mounted on the adapter plate, the guide block is connected to the connecting rod, and the guide rod is connected to the guide block and extends into the spiral groove.

9. The cylindrical battery welding device according to claim 8, characterized in that: The actuating assembly also includes a limit block, a blocking block and an elastic member, the limit block and the blocking block are both connected to the connecting rod, the limit block is arranged at an end of the adapter plate away from the fixed seat, the blocking block is arranged at an end of the adapter plate close to the fixed seat, the elastic member is sleeved on the connecting rod and is arranged between the adapter plate and the blocking block to provide elastic force for the connecting rod to move away from the adapter plate.

10. The cylindrical battery welding device according to claim 1, characterized in that: The number of the actuating components is two, and the two actuating components are respectively arranged on two sides of the fixing seat.

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