Lithium battery output lead welding structure

Abstract

The invention relates to the technical field of lithium battery production, in particular to a lithium battery output lead welding structure which comprises a feeding mechanism and a discharging mechanism, a stand column is arranged between the feeding mechanism and the discharging mechanism, a top plate is fixed to the top of the stand column, and a welding mechanism is installed at the bottom of the top plate. A plurality of welding platforms distributed circumferentially are arranged on the side face of the stand column, the welding platforms are connected with the stand column through rotating mechanisms, the rotating mechanisms are used for driving the welding platforms to rotate synchronously, abutting plates are arranged on the surfaces of the welding platforms, positioning mechanisms are arranged on the two sides of each abutting plate, and the positioning mechanisms are used for positioning lithium batteries. The abutting plate is connected with a pushing mechanism, and the pushing mechanism is used for pushing the abutting plate. The defect that a single battery needs to be manually and accurately placed on the surface of a welding platform in a traditional process is overcome, the phenomenon that due to the fact that the lithium battery is manually placed, the position of the lithium battery deviates, and consequently a welding spot deviates is avoided, meanwhile, continuous welding of an output lead of the lithium battery can be achieved, and the welding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery production, in particular to a lithium battery output lead welding structure. Background Art

[0002] Lithium batteries are highly efficient rechargeable batteries that achieve charge and discharge through the movement of lithium ions between the positive and negative electrodes. They have high energy density and long cycle life. During the assembly process, the output leads of lithium batteries need to be welded, usually using spot welding or laser welding processes to ensure a firm connection between the electrodes and the nickel sheet / copper foil. At the same time, the temperature must be strictly controlled to avoid damaging the battery cell. After welding, insulation treatment and conductivity testing are also required to ensure the stability and safety of the output interface, and ultimately it will be used in consumer electronics, electric vehicles and other fields.

[0003] In the lithium battery output lead welding structure, the traditional process requires manual placement of the battery cell precisely on the surface of the welding platform, and then the welding equipment completes the welding of the lead and the tab. This method has significant defects: First, manual placement relies on the operator's experience, and positioning deviations can easily lead to welding misalignment, causing cold welding, welding leakage or damage to the battery cell, and large fluctuations in yield rate; second, production efficiency is limited by manual rhythm, which is difficult to match the high-speed requirements of automated production lines. Summary of the Invention

[0004] The object of the present invention is to provide a lithium battery output lead welding structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A lithium battery output lead welding structure includes a loading mechanism and a unloading mechanism, a column is provided between the loading mechanism and the unloading mechanism, a top plate is fixed on the top of the column, a welding mechanism is installed on the bottom of the top plate, a plurality of welding platforms distributed in a circle are provided on the side of the column, the welding platforms are connected to the column through a rotating mechanism, the rotating mechanism is used to drive the welding platforms to rotate synchronously, abutment plates are provided on the surfaces of the welding platforms, and positioning mechanisms are provided on both sides of the abutment plates, the positioning mechanisms are used to position the lithium battery, the abutment plates are connected to a pushing mechanism, and the pushing mechanism is used to push the abutment plates.

[0007] Preferably: the rotating mechanism includes a rotating ring fixedly connected to the welding platform, a gear ring is fixed on the top of the rotating ring, both the gear ring and the rotating ring are rotatably connected to the column, a mounting plate is fixed on the side wall of the column, a motor is fixed on the top of the mounting plate, a rotating rod is fixed at the output end of the motor, the rotating rod passes through the mounting plate and is rotatably connected to the mounting plate, and an incomplete gear that can engage with the gear ring is fixed at the end of the rotating rod.

[0008] Preferably: the pushing mechanism includes a slide groove arranged on the surface of the welding platform, the lower end of the support plate is located inside the slide groove and is slidably connected to the slide groove, one side of the support plate is in contact with one of the inner walls of the slide groove, and a first elastic member is fixed to the other side of the support plate, and the end of the first elastic member away from the support plate is fixedly connected to the other inner wall of the slide groove, a limiting rod is fixed on the inner wall of the slide groove, the limiting rod passes through the support plate and is slidably connected to the support plate, and a cam that can squeeze the support plate is fixed to the outside of the rotating rod.

[0009] Preferably: the positioning mechanism includes positioning plates arranged on both sides of the welding platform and symmetrically distributed, the positioning plates are connected to the side walls of the welding platform through a second elastic member, the positioning plates are fixedly connected to a support rod, the support rod extends into the interior of the welding platform and is slidingly connected to the inner wall of the welding platform, the support rod is connected to a traction assembly, the traction assembly is used to pull the support rod, so that the positioning plates are synchronously approached, a bracket is fixed on the side wall of the positioning plate, and a guide wheel is installed at the end of the bracket.

[0010] Preferably: the traction assembly includes a traction rope fixedly connected to the end of the support rod, the other end of the traction rope passes through the bottom of the welding platform and is fixedly connected to a baffle, the baffle is connected to the bottom of the welding platform through a third elastic member, a push rod passes through the inside of the baffle, the upper end of the push rod is inserted into the inside of the welding platform and is slidably connected to the inner wall of the welding platform, a guide column is provided under the welding platform, a wire groove passes through the inside of the guide column, the traction rope passes through the inside of the wire groove, and an extrusion component is provided on the column, and the extrusion component is used to squeeze the push rod.

[0011] Preferably, the extrusion component includes a support plate fixedly connected to the column, an arc-shaped extrusion block is fixed on the top of the support plate, and the height of the arc-shaped extrusion block gradually increases from the edge position to the middle position.

[0012] Preferably, the guide column is connected to an adjusting component, which is used to adjust the height of the guide column, and a supporting block for supporting the baffle is fixed to the bottom of the welding platform.

[0013] Preferably: the adjusting component includes a limiting cylinder fixedly connected to the top of the guide column, the top of the limiting cylinder is connected to the bottom of the welding platform through a fourth elastic member, an insertion rod is fixed to the bottom of the welding platform, the insertion rod is inserted into the interior of the limiting cylinder and is slidingly connected to the inner wall of the limiting cylinder, a pin rod passes through the side wall of the limiting cylinder, the pin rod is connected to the outer wall of the limiting cylinder through a fifth elastic member, and a plurality of vertically distributed pin grooves that are compatible with the pin rods are provided on the side wall of the insertion rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention can automatically transport lithium batteries to the bottom of the welding mechanism through the setting of a loading mechanism, an unloading mechanism and multiple rotatable welding platforms, thereby realizing automatic loading and unloading of lithium batteries. At the same time, the lithium batteries can be automatically positioned during the transportation process of the lithium batteries, which solves the defect that the traditional process requires manual placement of battery cells on the surface of the welding platform, avoids the position deviation of the lithium batteries caused by manual placement of the lithium batteries, and thus causes the phenomenon of weld point deviation. At the same time, it can also realize continuous welding of the lithium battery output leads, thereby improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the overall welding structure in an embodiment of the present invention.

[0016] Figure 2 Schematic diagram of the column structure in an embodiment of the present invention.

[0017] Figure 3 Schematic diagram of the welding platform structure in an embodiment of the present invention.

[0018] Figure 4 This is a front view of the internal structure of the welding platform in an embodiment of the present invention.

[0019] Figure 5 It is a front view of the internal structure of the limiting cylinder in an embodiment of the present invention.

[0020] In the figure: 1-feeding mechanism; 2-unloading mechanism; 3-rotating mechanism; 31-motor; 32-mounting plate; 33-rotating rod; 34-incomplete gear; 35-gear ring; 36-rotating ring; 4-pushing mechanism; 41-cam; 42-limiting rod; 43-first elastic member; 44-slide; 5-positioning mechanism; 51-guide wheel; 52-bracket; 53-positioning plate; 54-second elastic member; 55-support rod ;56-traction rope;57-guide column;58-third elastic member;59-baffle;510-resistance rod;511-support block;512-pin groove;513-pin rod;514-limiting cylinder;515-insertion rod;516-third elastic member;517-fourth elastic member;518-support plate;519-arc-shaped extrusion block;6-welding platform;7-column;8-welding mechanism;9-top plate;10-resistance plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0023] In one embodiment, see Figure 1 、 Figure 2 and Figure 3 A lithium battery output lead welding structure includes a feeding mechanism 1 and a unloading mechanism 2. A column 7 is provided between the feeding mechanism 1 and the unloading mechanism 2. A top plate 9 is fixed on the top of the column 7. A welding mechanism 8 is installed on the bottom of the top plate 9. A plurality of welding platforms 6 distributed in a circumference are provided on the side of the column 7. The welding platform 6 is connected to the column 7 through a rotating mechanism 3. The rotating mechanism 3 is used to drive the welding platform 6 to rotate synchronously. A butt plate 10 is provided on the surface of the welding platform 6. A positioning mechanism 5 is provided on both sides of the butt plate 10. The positioning mechanism 5 is used to position the lithium battery. The butt plate 10 is connected to a pushing mechanism 4. The pushing mechanism 4 is used to push the butt plate 10.

[0024] In this embodiment, when welding the output leads of the lithium battery, the lithium battery is transported to the surface of one of the welding platforms 6 through the feeding mechanism 1, and then the rotating mechanism 3 drives multiple welding platforms 6 to rotate synchronously, and the welding platform 6 drives the lithium battery to rotate. During the rotation of the welding platform 6, the lithium battery is positioned in one direction (left and right for the staff) through the positioning mechanisms 5 on both sides of the abutment plate 10. When the welding platform 6 drives the lithium battery to rotate below the welding mechanism 8, the staff pushes the lithium battery so that the rear side of the lithium battery is tightly fitted with the abutment plate 10, thereby playing a positioning role in the other direction of the lithium battery (front and back for the staff). Then the staff can place the lead end at the position where the lithium battery needs to be welded, and weld the lead through the welding mechanism 8, thereby achieving the purpose of automatic welding. When the welding of the lithium battery output leads is completed, the rotating mechanism 3 is driven again The movable welding platform 6 rotates synchronously. When the lithium battery rotates to the position of the unloading mechanism 2, the pushing mechanism 4 pushes the push plate 10, and the push plate 10 pushes the lithium battery, thereby pushing the lithium battery off the welding platform 6, and the lithium battery is unloaded by the unloading mechanism 2, wherein the loading mechanism 1 and the unloading mechanism 2 can both be conveyor belts, and such a cycle can be repeated to achieve continuous welding of the output leads of the lithium battery, effectively improving the welding efficiency of the output leads of the lithium battery, that is, the present invention can realize automatic loading and unloading of lithium batteries through the setting of the loading mechanism 1, the unloading mechanism 2 and the plurality of rotatable welding platforms 6, and does not require the staff to place the lithium battery under the welding mechanism 8, saving manpower and improving the welding efficiency of the output leads of the lithium battery, and through the setting of the push plate 10 and the positioning mechanism 5, the lithium battery can be quickly positioned, avoiding the position offset of the lithium battery caused by manual placement of the lithium battery, thereby causing the phenomenon of weld point offset, thereby ensuring welding efficiency.

[0025] See also Figure 2The rotating mechanism 3 includes a rotating ring 36 fixedly connected to the welding platform 6, a gear ring 35 is fixed on the top of the rotating ring 36, and the gear ring 35 and the rotating ring 36 are both rotatably connected to the column 7. A mounting plate 32 is fixed on the side wall of the column 7, a motor 31 is fixed on the top of the mounting plate 32, and a rotating rod 33 is fixed to the output end of the motor 31. The rotating rod 33 passes through the mounting plate 32 and is rotatably connected to the mounting plate 32. An incomplete gear 34 that can mesh with the gear ring 35 is fixed to the end of the rotating rod 33;

[0026] When welding the output leads of the lithium battery, the lithium battery is transported to the surface of one of the welding platforms 6 through the loading mechanism 1, and then the motor 31 is started. The motor 31 drives the incomplete gear 34 to rotate one circle through the rotating rod 33, and the rotating ring 36 is driven to rotate through the engagement of the incomplete gear 34 and the gear ring 35. The rotating ring 36 drives the welding platform 6 to rotate synchronously. When the welding platform 6 drives the lithium battery to rotate to the bottom of the welding mechanism 8, the gear ring 35 disengages the engagement of the incomplete gear 34, and the rotating ring 36 no longer rotates the welding platform 6. Then the staff can weld the output leads of the lithium battery through the welding mechanism 8. At the same time, as the rotating rod 33 continues to rotate, the pushing mechanism 4 can push the abutment plate 10 on the surface of one of the welding platforms 6, and push the welded lithium battery off the welding platform 6 through the abutment plate 10, and the lithium battery is unloaded by the unloading mechanism 2, thereby achieving the purpose of automatic unloading of the lithium battery.

[0027] See also Figure 2 and Figure 3 , the pushing mechanism 4 includes a slide groove 44 provided on the surface of the welding platform 6, the lower end of the support plate 10 is located inside the slide groove 44 and is slidably connected to the slide groove 44, one side of the support plate 10 is in contact with one of the inner walls of the slide groove 44, and a first elastic member 43 is fixed to the other side of the support plate 10, and the end of the first elastic member 43 away from the support plate 10 is fixedly connected to the other inner wall of the slide groove 44, a limiting rod 42 is fixed on the inner wall of the slide groove 44, the limiting rod 42 passes through the support plate 10 and is slidably connected to the support plate 10, and a cam 41 capable of squeezing the support plate 10 is fixed to the outside of the rotating rod 33;

[0028] When the welding platform 6 drives the lithium battery to rotate to the bottom of the welding mechanism 8, the staff pushes the lithium battery so that the back side of the lithium battery fits tightly with the back plate 10, thereby playing a role in quickly positioning the lithium battery. When the welding of the lithium battery output lead is completed, the rotating mechanism 3 drives the welding platform 6 to rotate. When the welding platform 6 rotates to the position of the unloading mechanism 2, the gear ring 35 disengages the meshing of the incomplete gear 34, and the rotating ring 36 no longer rotates the welding platform 6. At the same time, as the rotating rod 33 continues to rotate, the rotating rod 33 squeezes the back plate 10 through the cam 41, and the back plate 10 removes the welded lithium battery from the welding The receiving platform 6 is pushed down, and the lithium battery is unloaded by the unloading mechanism 2, thereby achieving the purpose of automatic unloading of the lithium battery. When the cam 41 no longer squeezes the push plate 10, the push plate 10 automatically resets under the action of the first elastic member 43, thereby contacting and connecting with the inner wall of the slide groove 44, so that the push plate 10 can position the lithium battery again, wherein the first elastic member 43 can be a spring, and the limiting rod 42 can play a limiting role on the push plate 10, effectively improving the stability of the push plate 10 when moving. In addition, in order to avoid the interference of the column 7 on the rotation of the cam 41, a clearance groove can be set on the side wall of the column 7.

[0029] See also Figure 3 and Figure 4 The positioning mechanism 5 includes positioning plates 53 symmetrically arranged on both sides of the welding platform 6. The positioning plates 53 are connected to the side walls of the welding platform 6 through second elastic members 54. The positioning plates 53 are fixedly connected to support rods 55. The support rods 55 extend into the interior of the welding platform 6 and are slidably connected to the inner wall of the welding platform 6. The support rods 55 are connected to a traction assembly for pulling the support rods 55 so that the positioning plates 53 are synchronously approached. A bracket 52 is fixed to the side wall of the positioning plate 53, and a guide wheel 51 is installed at the end of the bracket 52.

[0030] The feeding mechanism 1 transports the lithium battery to the surface of one of the welding platforms 6, and then the rotating mechanism 3 drives multiple welding platforms 6 to rotate synchronously, and the welding platform 6 drives the lithium battery to rotate. During the rotation of the welding platform 6, the traction assembly pulls the support rod 55, and the support rod 55 drives the positioning plates 53 to approach each other. The positioning plates 53 drive the guide wheels 51 to approach each other through the bracket 52, and the lithium battery is positioned in one direction (relative to the staff, this direction is left and right) through the guide wheel 51. When the welding platform 6 drives the lithium battery to rotate to the bottom of the welding mechanism 8, the staff pushes the lithium battery so that the back side of the lithium battery is tightly fitted with the abutment plate 10. This operation can achieve rapid positioning of the lithium battery, avoid the position offset of the lithium battery caused by manual placement of the lithium battery, and thus the phenomenon of weld offset, thereby ensuring welding efficiency. The setting of the guide wheel 51 can reduce the friction of the lithium battery, so that the staff can push the lithium battery more easily. When the traction assembly no longer pulls the support rod 55, the second elastic member 54 can play a resetting role on the positioning plate 53, and the second elastic member 54 can be a spring.

[0031] See also Figure 4 The traction assembly includes a traction rope 56 fixedly connected to the end of the support rod 55, the other end of the traction rope 56 passes through the bottom of the welding platform 6 and is fixedly connected to the baffle 59, the baffle 59 is connected to the bottom of the welding platform 6 through the third elastic member 58516, the baffle 59 is penetrated by a push rod 510, the upper end of the push rod 510 is inserted into the interior of the welding platform 6 and is slidably connected to the inner wall of the welding platform 6, a guide column 57 is provided under the welding platform 6, a wire groove is penetrated inside the guide column 57, the traction rope 56 passes through the inside of the wire groove, wherein an extrusion component is provided on the column 7, and the extrusion component is used to squeeze the push rod 510;

[0032] The loading mechanism 1 transports the lithium battery to the surface of one of the welding platforms 6, and then the rotating mechanism 3 drives multiple welding platforms 6 to rotate synchronously. During the rotation of the welding platform 6, the extrusion component squeezes the push rod 510, so that the push rod 510 drives the baffle 59 to move upward. Under the guidance of the guide column 57, the baffle 59 moves upward while pulling the support rod 55 through the traction rope 56, so that the support rod 55 can drive the positioning plate 53 to approach and complete the positioning of the lithium battery. When the extrusion assembly no longer squeezes the push rod 510, the baffle 59 automatically resets under the action of the third elastic member 58516. At this time, the traction force of the traction rope 56 on the positioning plate 53 is reduced, so that the positioning plate 53 can automatically reset, where the third elastic member 58516 can be a spring.

[0033] See also Figure 2 and Figure 4The extrusion component includes a support plate 518 fixedly connected to the column 7, and an arc-shaped extrusion block 519 is fixed on the top of the support plate 518. The height of the arc-shaped extrusion block 519 gradually increases from the edge position to the middle position;

[0034] The loading mechanism 1 transports the lithium battery to the surface of one of the welding platforms 6, and then the rotating mechanism 3 drives multiple welding platforms 6 to rotate synchronously. During the rotation of the welding platform 6, the arc-shaped extrusion block 519 squeezes the push rod 510, so that the push rod 510 can automatically drive the baffle 59 to move upward during the rotation of the welding platform 6. When the lithium battery rotates to the bottom of the welding mechanism 8, the lower end of the push rod 510 just contacts the middle position of the arc-shaped extrusion block 519. At this time, the degree of extrusion of the arc-shaped extrusion block 519 on the push rod 510 reaches the maximum, and the positioning plate 53 also just completes the positioning of the lithium battery, thereby realizing the automatic positioning of the lithium battery and effectively improving the positioning efficiency of the lithium battery.

[0035] See also Figure 4 and Figure 5 The guide column 57 is connected to an adjusting component, which is used to adjust the height of the guide column 57. A supporting block 511 for supporting the baffle 59 is fixed to the bottom of the welding platform 6;

[0036] When positioning the lithium battery, the guide column 57 guides the traction rope 56. In actual application, the height of the guide column 57 can also be adjusted by the adjustment component. The guide column 57 pulls the positioning plate 53 through the traction rope 56, thereby adjusting the initial position of the positioning plate 53, so that the positioning plate 53 can position lithium batteries of different models. The support block 511 can limit the baffle 59, thereby avoiding the guide column 57 directly driving the baffle 59 to move downward through the traction rope 56 when adjusting the position of the guide column 57, thereby ensuring the initial position of the baffle 59.

[0037] See also Figure 5 The adjusting component includes a limiting cylinder 514 fixedly connected to the top of the guide column 57, the top of the limiting cylinder 514 is connected to the bottom of the welding platform 6 through a fourth elastic member 517, and an insertion rod 515 is fixed to the bottom of the welding platform 6. The insertion rod 515 is inserted into the interior of the limiting cylinder 514 and is slidably connected to the inner wall of the limiting cylinder 514. A pin rod 513 passes through the side wall of the limiting cylinder 514, and the pin rod 513 is connected to the outer wall of the limiting cylinder 514 through a fifth elastic member, wherein a plurality of vertically distributed pin grooves 512 that are adapted to the pin rod 513 are provided on the side wall of the insertion rod 515;

[0038] When the initial position of the positioning plate 53 needs to be adjusted, the pin rod 513 is pulled out from the pin groove 512, and then the guide column 57 is moved downward, so that the guide column 57 can pull the support rod 55 through the traction rope 56. When the initial position of the positioning plate 53 needs to be adjusted, the pin rod 513 is released, and the end of the pin rod 513 automatically enters one of the pin grooves 512 under the action of the fifth elastic member. At this time, the pin groove 512 fixes the limiting cylinder 514 through the pin rod 513, thereby ensuring the stability of the guide column 57. The fourth elastic member 517 can play an elastic supporting role on the limiting cylinder 514, thereby ensuring the stability of the limiting cylinder 514. The fourth elastic member 517 and the fifth elastic member can both be springs.

[0039] Working principle: When welding the output lead of a lithium battery, the lithium battery is transported to the surface of one of the welding platforms 6 through the feeding mechanism 1, and then the motor 31 is started. The motor 31 drives the incomplete gear 34 to rotate one circle through the rotating rod 33, and the engagement of the incomplete gear 34 and the gear ring 35 drives the rotating ring 36 to rotate. The rotating ring 36 drives the welding platform 6 to rotate synchronously, and when the welding platform 6 drives the lithium battery to rotate to the bottom of the welding mechanism 8, the gear ring 35 disengages the incomplete gear 34, and the rotating ring 36 no longer rotates the welding platform 6. Then the staff can weld the output lead of the lithium battery through the welding mechanism 8. At the same time, as the rotating rod 33 continues to rotate, the rotating rod 33 squeezes the support plate 10 through the cam 41, and the support plate 10 pushes the welded lithium battery off the welding platform 6, and the lithium battery is unloaded by the unloading mechanism 2, thereby achieving the purpose of automatic unloading of the lithium battery. In the process of rotation of the welding platform 6, the arc-shaped extrusion block 519 squeezes the support rod 510, and the support rod 510 drives the baffle 59 to move upward. Under the guidance of the guide column 57, the baffle 59 moves upward and pulls the support rod 55 through the traction rope 56, so that the support rod 55 can drive the positioning plate 53 to approach, and the positioning plate 53 drives the guide rod 52 through the bracket The guide wheels 51 approach each other. When the lithium battery rotates to the bottom of the welding mechanism 8, the lower end of the push rod 510 just contacts the middle position of the arc-shaped extrusion block 519. At this time, the degree of extrusion of the arc-shaped extrusion block 519 on the push rod 510 reaches the maximum, and the guide wheel 51 also just completes the positioning of the lithium battery in one direction. Then the staff pushes the lithium battery, so that the back side of the lithium battery fits tightly with the support plate 10, and then plays a positioning role in the other direction of the lithium battery, which can realize the rapid positioning of the lithium battery, avoid the position deviation of the lithium battery caused by manual placement of the lithium battery, and thus the phenomenon of welding point deviation, thereby ensuring welding efficiency. In addition, when positioning the lithium battery, the guide column 57 guides the traction rope 56. In actual application, the guide column 57 can be moved downward so that the guide column 57 can pull the support rod 55 through the traction rope 56, thereby adjusting the initial position of the positioning plate 53, so that the positioning plate 53 can position lithium batteries of different models. After the initial position of the positioning plate 53 is adjusted, the pin rod 513 automatically enters one of the pin grooves 512. At this time, the pin groove 512 fixes the limiting cylinder 514 through the pin rod 513, thereby ensuring the stability of the guide column 57.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lithium battery output lead welding structure, comprising a loading mechanism and a unloading mechanism; characterized in that: A column is provided between the loading mechanism and the unloading mechanism, a top plate is fixed on the top of the column, a welding mechanism is installed on the bottom of the top plate, a plurality of welding platforms distributed in a circle are provided on the side of the column, the welding platform is connected to the column through a rotating mechanism, the rotating mechanism is used to drive the welding platform to rotate synchronously, abutment plates are provided on the surface of the welding platform, positioning mechanisms are provided on both sides of the abutment plates, the positioning mechanisms are used to position the lithium battery, the abutment plates are connected to a pushing mechanism, and the pushing mechanism is used to push the abutment plates.

2. A lithium battery output lead welding structure according to claim 1, characterized in that: The rotating mechanism includes a rotating ring fixedly connected to the welding platform, a gear ring fixed on the top of the rotating ring, both the gear ring and the rotating ring are rotatably connected to the column, a mounting plate is fixed on the side wall of the column, a motor is fixed on the top of the mounting plate, a rotating rod is fixed at the output end of the motor, the rotating rod passes through the mounting plate and is rotatably connected to the mounting plate, and an incomplete gear that can mesh with the gear ring is fixed at the end of the rotating rod.

3. A lithium battery output lead welding structure according to claim 2, characterized in that: The pushing mechanism includes a slide groove arranged on the surface of the welding platform, the lower end of the support plate is located inside the slide groove and is slidably connected to the slide groove, one side of the support plate is in contact with one of the inner walls of the slide groove, and a first elastic member is fixed to the other side of the support plate, and the end of the first elastic member away from the support plate is fixedly connected to the other inner wall of the slide groove, a limiting rod is fixed on the inner wall of the slide groove, the limiting rod passes through the support plate and is slidably connected to the support plate, and a cam that can squeeze the support plate is fixed to the outside of the rotating rod.

4. The lithium battery output lead welding structure according to claim 1, characterized in that: The positioning mechanism includes positioning plates that are arranged on both sides of the welding platform and are symmetrically distributed. The positioning plates are connected to the side walls of the welding platform through second elastic members. The positioning plates are fixedly connected to support rods, which extend into the interior of the welding platform and are slidably connected to the inner wall of the welding platform. The support rods are connected to traction components, which are used to pull the support rods so that the positioning plates are synchronously approached. A bracket is fixed on the side wall of the positioning plate, and a guide wheel is installed at the end of the bracket.

5. A lithium battery output lead welding structure according to claim 4, characterized in that: The traction assembly includes a traction rope fixedly connected to the end of the support rod, the other end of the traction rope passes through the bottom of the welding platform and is fixedly connected to a baffle, the baffle is connected to the bottom of the welding platform through a third elastic member, a push rod passes through the inside of the baffle, the upper end of the push rod is inserted into the inside of the welding platform and is slidably connected to the inner wall of the welding platform, a guide column is provided under the welding platform, a wire groove passes through the inside of the guide column, the traction rope passes through the inside of the wire groove, and an extrusion component is provided on the column, and the extrusion component is used to squeeze the push rod.

6. A lithium battery output lead welding structure according to claim 5, characterized in that: The extrusion component includes a support plate fixedly connected to the column, and an arc-shaped extrusion block is fixed on the top of the support plate. The height of the arc-shaped extrusion block gradually increases from the edge position to the middle position.

7. A lithium battery output lead welding structure according to claim 5 or 6, characterized in that: The guide column is connected to an adjusting component, which is used to adjust the height of the guide column. A supporting block for supporting the baffle is fixed to the bottom of the welding platform.

8. The lithium battery output lead welding structure according to claim 7, characterized in that: The adjusting component includes a limiting cylinder fixedly connected to the top of the guide column, the top of the limiting cylinder is connected to the bottom of the welding platform through a fourth elastic member, an insertion rod is fixed to the bottom of the welding platform, the insertion rod is inserted into the interior of the limiting cylinder and is slidingly connected to the inner wall of the limiting cylinder, a pin rod passes through the side wall of the limiting cylinder, the pin rod is connected to the outer wall of the limiting cylinder through a fifth elastic member, and a plurality of vertically distributed pin grooves that are compatible with the pin rods are provided on the side wall of the insertion rod.

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