Laser welding equipment for lithium battery processing

Abstract

The invention discloses laser welding equipment for lithium battery processing, and relates to the technical field of lithium battery processing. The laser welding equipment for lithium battery processing comprises a base, an outer protective shell is arranged at the top of the base, an electric air cylinder is fixedly connected into the base, and material positioning equipment is fixedly connected to the top of the electric air cylinder; the top of the material positioning equipment is fixedly connected with a fixing column, the interior of the top of the fixing column is fixedly connected with a first hydraulic block, the top of the first hydraulic block is movably connected with a first push block, the top of the first push block is fixedly connected with a lifting plate, and the first hydraulic block communicates with the interior of a second hydraulic block through a first hose. The two sides of the material positioning equipment are fixedly connected with L-shaped supports. The top of the L-shaped support is fixedly connected with a second hydraulic block, and the second hydraulic block is movably connected with the second positioning plate through a transmission piece. According to the laser welding equipment for lithium battery processing, the left position and the right position of a lithium battery are automatically centered through movement of the first positioning plate and the second positioning plate, and labor is saved.

Description

Technical Field

[0001] This invention relates to the field of lithium battery processing technology, specifically to a laser welding device for lithium battery processing. Background Technology

[0002] A lithium-ion battery is a type of battery that uses lithium metal or lithium alloy as the positive / negative electrode material and a non-aqueous electrolyte solution. It is one of the most commonly used battery types today, possessing advantages such as light weight, high energy density, fast charging speed, and long cycle life, and is widely used in electronic devices, electric vehicles, aerospace, and other fields. Currently, most high-capacity lithium-ion batteries are manufactured by welding together multiple smaller-capacity cells.

[0003] Chinese patent CN117182309A, authorized and published on December 8, 2023, discloses a high-capacity lithium battery laser welding equipment. This equipment includes a base, a welding mechanism for welding the lithium battery cells, and a limiting mechanism for clamping and fixing the copper-aluminum composite sheet used for welding. In the aforementioned application, the equipment requires manual adjustment of the lithium battery's left and right positions before use, and manual placement of the electrode sheets in the welding position, which reduces the equipment's efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a laser welding device for lithium battery processing, solving the problems mentioned in the background section. To achieve the above objectives, this invention provides the following technical solution: a laser welding device for lithium battery processing, comprising: The base has an outer protective shell on its top to protect the operator, and an electric cylinder is fixedly connected inside the base. A material positioning device is fixedly connected to the top of the electric cylinder. The material positioning device has a fixed column fixedly connected to its top. A hydraulic block is fixedly connected inside the top of the fixed column. A push block is movably connected to the top of the hydraulic block, and a lifting plate is fixedly connected to the top of the push block. The hydraulic block is connected to the interior of a second hydraulic block via a hose. L-shaped brackets are fixedly connected to both sides of the material positioning device. A second hydraulic block is fixedly connected to the top of each L-shaped bracket. The second hydraulic block is movably connected to a positioning plate via a transmission component. The positioning plate allows the electric cylinder to drive the material positioning device to position the lithium battery when it is transported to the welding position by the conveyor belt. Simultaneously, the lifting plate raises the lithium battery to a certain height, reducing the pressure on the conveyor belt during welding. The rotation of the two positioning plates automatically centers the lithium battery, saving labor and facilitating the subsequent welding process.

[0005] Preferably, the transmission component includes a second push block, a first positioning plate, a first rotating shaft, a rotating block, a third hydraulic block, and a second hose. The second push block is movably connected to the inner side of the second hydraulic block, and the first positioning plate is fixedly connected to the inner side of the second push block. The first rotating shaft is rotatably connected to the inner side of the first positioning plate, and the second positioning plate is fixedly connected to the outer side of the first rotating shaft. The interior of the second hydraulic block communicates with the interior of the third hydraulic block through the second hose. The rear side of the third hydraulic block is fixedly connected to the rear side of the first positioning plate through a fixed bracket. The inner side of the third hydraulic block is movably connected to a push block, and the inner side of the push block is fixedly connected to a rotating block. The top of the rotating block is fixedly connected to the bottom of the first rotating shaft.

[0006] Preferably, the top of the outer protective shell is provided with a smoke removal device for absorbing fumes; the inside of the outer protective shell is movably connected to a conveyor belt device for conveying materials; the inside of the outer protective shell is movably connected to a laser welding machine; the inside of the outer protective shell is movably connected to an auxiliary fixing device; the inside of the outer protective shell is fixedly connected to a welding positioning device; the top of the conveyor belt device is movably connected to a lithium battery; the two sides of the conveyor belt device are fixedly connected to a fixing frame; a spring is fixedly connected between the push block and the hydraulic block; the inside of the outer protective shell is fixedly connected to the left and right sides with an automatic feeding assembly; and the top of the welding positioning device is fixedly connected to an anti-tipping assembly.

[0007] Preferably, the number of lifting plates is four, with two lifting plates forming a group, and each group of lifting plates is symmetrically distributed about the centerline of the material positioning device. The number of push blocks one is four, the number of hydraulic blocks one is four, the number of fixed columns is four, the number of hoses one is four, the number of L-shaped brackets is four, the number of hydraulic blocks two is four, the number of push blocks two is four, the number of positioning plates one is four, the number of rotating shafts one is four, the number of positioning plates two is four, the number of rotating blocks four, the number of hydraulic blocks three is four, and the number of hoses two is four.

[0008] Preferably, the automatic feeding assembly includes an inclined plate, a limiting baffle, a storage box, a fixing plate, a pusher block, a hydraulic block, a hose, a hydraulic block, a pusher block, a spring, a slider, and a slot. An inclined plate is fixedly connected to the inside of the outer protective shell. Multiple limiting baffles are fixedly connected to the upper surface of the inclined plate. The storage box is fixedly connected to the top of the inclined plate. A fixing plate is fixedly connected to the outer side of the L-shaped bracket. A hydraulic block is fixedly connected to the bottom of the fixing bracket. A pusher block is movably connected to the bottom of the hydraulic block. The top of the hydraulic block is fixedly connected to one end of the hose, and the other end of the hose is fixedly connected to the rear side of the hydraulic block. Hydraulic blocks are fixedly connected to the left and right inner surfaces of the outer protective shell. A pusher block is movably connected to the front side of the hydraulic block. A slider is fixedly connected to the front side of the pusher block. A spring is fixedly connected between the pusher block and the hydraulic block. The slider is slidably connected to the storage box via a groove inside the storage box. A slot is provided inside the slider. An automatic feeding component is installed so that when the lithium battery is carried to the welding position by the conveyor belt, the slider slides, causing the electrode sheets inside the storage box to fall into the slot, and then slide down the inclined plate onto the surface of the lithium battery. This eliminates the need for manual placement of the electrode sheets, saving labor, protecting the safety of operators, and improving the efficiency of the equipment.

[0009] Preferably, there are two inclined plates, each symmetrically distributed about the centerline of the base; twelve limiting baffles, with two limiting baffles forming a group; two storage boxes; four fixing plates; four push blocks; four hydraulic blocks; four hoses; two hydraulic blocks; six push blocks, with three push blocks forming a group; twelve springs; and six sliders.

[0010] Preferably, the size of the slot is consistent with the size of the electrode required for welding the lithium battery.

[0011] Preferably, the anti-tipping assembly includes a wedge block, a second fixing frame, a limiting wedge plate, a buffer plate, and a second spring. The wedge block is fixedly connected to the bottom of the wedge plate, the second fixing frame is fixedly connected to the top of the welding positioning device, the limiting wedge plate is fixedly connected to the top of the second fixing frame, the buffer plate is rotatably connected to the inside of the limiting wedge plate via a rotating shaft, and the second spring is fixedly connected to the bottom of the buffer plate. By providing the anti-tipping assembly, the electrode sheet is prone to tipping over when sliding down the wedge plate onto the lithium battery, which can disrupt the subsequent welding process. When the electrode sheet slides onto the lithium battery surface, the wedge block on the left can adjust the falling angle of the electrode sheet, reducing the tipping phenomenon. Simultaneously, the limiting wedge plate on the right allows the tipped electrode sheet to automatically reset under the action of the second spring and the buffer plate, thereby improving the equipment's working efficiency.

[0012] Preferably, the number of inclined blocks is six, the number of fixing brackets is twelve, and every two fixing brackets form a group. The number of limiting inclined plates is six, the number of buffer plates is six, and the number of springs is twelve.

[0013] Preferably, the length of the inclined block is consistent with the distance between the two limiting baffles.

[0014] This invention provides a laser welding device for lithium battery processing. It has the following advantages: (1) When the laser welding equipment for lithium battery processing is started, the electric cylinder is started, and the material positioning equipment, lifting plate, push block one, hydraulic block one, hose one, hydraulic block two, push block two, positioning plate one, rotating shaft one, positioning plate two, rotating block, hydraulic block three, and hose two are coordinated to make positioning plate one move inward, so that the material is automatically centered. At the same time, positioning plate two rotates, making the material welding process more stable.

[0015] (2) When the material positioning device moves upward, the laser welding equipment for lithium battery processing, together with the fixing plate 1, push block 3, hydraulic block 4, cartilage 3, hydraulic block 5, push block 4, spring 1, slider, and slot, automatically feeds the electrode sheets in the storage box, thereby saving manpower and improving the working efficiency of the equipment.

[0016] (3) The laser welding equipment for lithium battery processing, when the electrode falls, works with the inclined block, the second fixing frame, the limiting inclined plate, the buffer plate and the second spring to control the electrode from tilting, so that the subsequent laser welding process can proceed smoothly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall internal structure of the present invention; Figure 3 This is a schematic diagram of some of the components of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the automatic feeding component structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the automatic feeding component of the present invention; Figure 7 This is a schematic diagram of the anti-tipping component structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B; Figure 9This is a physical diagram of the entire invention.

[0018] In the picture: 100. Base; 200. Outer protective shell; 300. Smoke removal equipment; 400. Conveyor belt equipment; 500. Electric cylinder; 600. Material positioning equipment; 700. Laser welding machine; 800. Auxiliary fixing equipment; 900. Welding positioning equipment; 1000. Lithium battery; 1100. Fixing frame one; 1201. Lifting plate; 1202. Push block one; 1203. Hydraulic block one; 1204. Fixing column; 1205. Hoses one; 1206. L-shaped bracket; 1207. Hydraulic block two; 1208. Push block two; 1209. Positioning plate one; 1210. Rotating shaft one; 1211. Positioning plate two; 1212. Rotating block; 1213. Hydraulic block three; 1214. Hoses two; 1300 Automatic feeding assembly; 1301 Inclined plate; 1302 Limit baffle; 1303 Storage box; 1304 Fixed plate one; 1305 Push block three; 1306 Hydraulic block four; 1307 Hose three; 1308 Hydraulic block five; 1309 Push block four; 1310 Spring one; 1311 Slider; 1312 Slot; 1400 Anti-tipping component; 1401 Inclined block; 1402 Fixing frame two; 1403 Limiting inclined plate; 1404 Buffer plate; 1405 Spring two. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1, please refer to Figures 1-4 A laser welding device for lithium battery processing, comprising: The base 100 has an outer protective shell 200 on its top for operator protection. An electric cylinder 500 is fixedly connected inside the base 100, and a material positioning device 600 is fixedly connected to its top. The material positioning device 600 limits the front and rear positions of the lithium battery 1000. A smoke removal device 300 for absorbing fumes is installed on the top of the outer protective shell 200. A conveyor belt 400 for conveying materials is movably connected inside the outer protective shell 200. A laser welding machine 700 is movably connected inside the outer protective shell 200 for welding and fixing the lithium battery 1000 to the electrode sheets. An auxiliary fixing device 800 is movably connected inside the outer protective shell 200. 800, to fix the electrode surface to the electrode of lithium battery 1000, so that the subsequent laser welding process can proceed smoothly. The welding positioning device 900 is fixedly connected inside the outer protective shell 200. The welding positioning device 900 is set to fix the electrode of lithium battery 1000, so that the welding process is more stable. The lithium battery 1000 is movably connected to the top of the conveyor belt device 400. The two sides of the conveyor belt device 400 are fixedly connected to the fixing frame 1100. The push block 1202 and the hydraulic block 1203 are fixedly connected to the spring 3. The spring 3 is set so that the push block 1202 can automatically reset. The automatic feeding component 1300 is fixedly connected to the left and right sides inside the outer protective shell 200. The top of the welding positioning device 900 is fixedly connected to the anti-tipping component 1400. The top of the material positioning device 600 is fixedly connected to a fixed column 1204. The top of the fixed column 1204 is fixedly connected to a hydraulic block 1203. The top of the hydraulic block 1203 is movably connected to a push block 1202. The top of the push block 1202 is fixedly connected to a lifting plate 1201. The lifting plate 1201 is set so that the lithium battery 1000 is lifted upward by the lifting plate 1201, thereby reducing the compression on the conveyor belt device 400 and extending the service life of the conveyor belt device 400. The hydraulic block 1203 is connected to the interior of the hydraulic block 2 1207 through a hose 1205. The two sides of the material positioning device 600 are fixedly connected to L-shaped brackets 1206. The top of the L-shaped brackets 1206 is fixedly connected to a hydraulic block 2 1207. The hydraulic block 2 1207 is movably connected to the positioning plate 2 1211 through a transmission component. The transmission components include push block 2 1208, positioning plate 1 1209, rotating shaft 1 1210, rotating block 1212, hydraulic block 3 1213, and hose 2 1214. Push block 2 1208 is movably connected to the inner side of hydraulic block 2 1207. Positioning plate 1 1209 is fixedly connected to the inner side of push block 2 1208. Rotating shaft 1 1210 is rotatably connected to the inner side of positioning plate 1 1209. Positioning plate 2 1211 is fixedly connected to the outer side of rotating shaft 1 1210. The interior of hydraulic block 2 1207 is connected to the interior of hydraulic block 3 1213 through hose 2 1214. The rear side of hydraulic block 3 1213 is fixedly connected to the rear side of positioning plate 1 1209 through a fixed bracket. Push block is movably connected to the inner side of hydraulic block 3 1213. Rotating block 1212 is fixedly connected to the inner side of push block. The top of rotating block 1212 is fixedly connected to the bottom of rotating shaft 1 1210. Positioning plate 2 1211 is set up so that when the lithium battery 1000 is transported to the welding position by the conveyor belt equipment 400, the electric cylinder 500 drives the material positioning equipment 600 to position the lithium battery 1000 in the front and rear positions. At the same time, the lifting plate 1201 lifts the lithium battery 1000 to a certain height, thereby reducing the pressure on the conveyor belt during welding. Meanwhile, the positioning plates 2 1211 on both sides rotate to automatically center the lithium battery 1000 in the left and right positions, thereby saving labor and making the subsequent welding process proceed smoothly.

[0021] In operation, when the equipment is started, the conveyor belt 400 is activated, moving the lithium battery 1000 to the welding position. Simultaneously, the electric cylinder 500 is activated, causing the material positioning device 600 to move upwards, limiting the forward and backward position of the lithium battery 1000. At the same time, the lifting plate 1201 contacts the bottom of the lithium battery 1000, causing the push block 1202 to move downwards. This increases the internal pressure of the hydraulic block 1203, which is then transmitted through the hose 1205 to the hydraulic block 1207, increasing its internal pressure. Pushing block 2 1208 is pushed inward, causing positioning plate 1 1209 to move inward along with pushing block 2 1208, automatically centering the lithium battery 1000 in the left and right positions. At the same time, the internal pressure of hydraulic block 2 1207 is transmitted to hydraulic block 3 1213 through hose 2 1214, causing pushing block to move outward, rotating block 1212 to rotate, rotating shaft 1 1210 to rotate, and positioning plate 2 1211 to rotate along with rotating shaft 1 1210, thereby fixing the side of lithium battery 1000 with positioning plate 2 1211, making lithium battery 1000 more stable in the subsequent welding process, saving labor, and ensuring the smooth progress of the subsequent welding process.

[0022] Example 2, please refer to Figures 1-6Based on Embodiment 1, the automatic feeding assembly 1300 includes an inclined plate 1301, a limiting baffle 1302, a storage box 1303, a fixing plate 1304, a push block 1305, a hydraulic block 1306, a hose 1307, a hydraulic block 1308, a push block 1309, a spring 1310, a slider 1311, and a slot 1312. The inclined plate 1301 is fixedly connected inside the outer protective shell 200. The upper surface of the inclined plate 1301... Multiple limiting baffles 1302 are fixedly connected. A storage box 1303 is fixedly connected to the top of the inclined plate 1301. A fixing plate 1304 is fixedly connected to the outer side of the L-shaped bracket 1206. A hydraulic block 1306 is fixedly connected to the bottom of the fixing frame 1100. A push block 1305 is movably connected to the bottom of the hydraulic block 1306. The top of the hydraulic block 1306 is fixedly connected to one end of the hose 1307, and the other end of the hose 1307 is fixedly connected to the hydraulic... The rear side of hydraulic block 1308 is fixedly connected to a hose 1307, allowing the interior of hydraulic block 1308 to communicate with the interior of hydraulic block 1306. Hydraulic block 1308 is fixedly connected to the left and right inner surfaces of the outer protective shell 200. Push block 1309 is movably connected to the front side of hydraulic block 1308. A slider 1311 is fixedly connected to the front side of push block 1309. A spring 11 is fixedly connected between push block 1309 and hydraulic block 1308. 310, a spring 1310 is set so that the push block 1309 can automatically reset. The slider 1311 is slidably connected to the storage box 1303 through a groove opened inside the storage box 1303. A slot 1312 is opened inside the slider 1311. The slot 1312 is set so that the electrode in the storage box 1303 can fall into the slot 1312 by its own weight. The size of the slot 1312 is consistent with the size of the electrode required for welding the lithium battery 1000. There are two inclined plates 1301, each symmetrically distributed about the center line of the base 100; there are twelve limiting baffles 1302, with two limiting baffles 1302 forming a group; there are two storage boxes 1303; there are four fixing plates 1304; there are four push blocks 1305; there are four hydraulic blocks 1306; there are four hoses 1307; there are two hydraulic blocks 1308; there are six push blocks 1309, with three push blocks 1309 forming a group; there are twelve springs 1310; and there are six sliders 1311. An automatic feeding component 1300 is set up so that when the lithium battery 1000 is carried to the welding position by the conveyor belt device 400, the slider 1311 slides, causing the electrode sheets inside the storage box 1303 to fall into the slot 1312, and then slide down from the inclined plate 1301 onto the surface of the lithium battery 1000. This eliminates the need for manual placement of electrode sheets, saving labor, protecting the safety of operators, and improving the efficiency of equipment operation.

[0023] In use, based on Example 1, when the material positioning device 600 moves upward, the fixing plate 1304 moves upward along with the L-shaped bracket 1206, causing the push block 1305 to move upward, increasing the internal pressure of the hydraulic block 1306. This internal pressure is then transmitted to the hydraulic block 1308 through the hose 1307, increasing the internal pressure of the hydraulic block 1308. This causes the push block 1309 to push inward, and the slider 1311 to slide inward. This allows the electrode sheet that has fallen from the storage box 1303 into the slot 1312 to slide down the inclined plate 1301 onto the surface of the lithium battery 1000, thus eliminating the need for manual placement of the electrode sheet, saving labor, protecting the safety of operators, and improving equipment efficiency.

[0024] Example 3, please refer to Figures 1-8 Based on Embodiment 1 and Embodiment 2, the anti-tipping component 1400 includes a ramp 1401, a second fixing frame 1402, a limiting ramp 1403, a buffer plate 1404, and a second spring 1405. The ramp 1401 is fixedly connected to the bottom of the ramp 1301. The length of the ramp 1401 is consistent with the distance between the two limiting baffles 1302. The second fixing frame 1402 is fixedly connected to the top of the welding positioning device 900. The limiting ramp 1403 is fixedly connected to the top of the second fixing frame 1402. The buffer plate 1404 is rotatably connected to the inside of the limiting ramp 1403 through a rotating shaft. The second spring 1405 is fixedly connected to the bottom of the buffer plate 1404. The second spring 1405 is provided so that the buffer plate 1404 can automatically reset. There are six inclined blocks 1401, twelve fixing brackets 1402, and two fixing brackets 1402 form a group. There are six limiting inclined plates 1403, six buffer plates 1404, and twelve springs 1405. The anti-tipping component 1400 is installed because the electrode sheet is prone to tipping over when it slides down from the inclined plate 1301 onto the lithium battery 1000, which can prevent the subsequent welding process from proceeding smoothly. When the electrode sheet slides onto the surface of the lithium battery 1000, the inclined block 1401 on the left can adjust the falling angle of the electrode sheet to reduce the tipping phenomenon. At the same time, the limiting inclined plate 1403 on the right causes the tipped electrode sheet to automatically reset under the action of the spring 1405 and the buffer plate 1404, thereby improving the working efficiency of the equipment.

[0025] In use, based on Embodiment 1 and Embodiment 2, when the electrode falls along the inclined plate 1301 onto the surface of the lithium battery 1000, it is prone to tipping over, which makes the subsequent welding process difficult. When the electrode falls along the inclined plate 1301 to the bottom of the inclined plate 1301, the inclined block 1401 reduces the falling angle of the electrode, making the falling of the electrode more stable and reducing the occurrence of tipping over. When the electrode begins to tip over, the right side of the electrode contacts the buffer plate 1404, causing the buffer plate 1404 to rotate. This causes the second spring 1405 to convert the kinetic energy of the electrode into elastic potential energy. At this time, the second spring 1405 restores its deformation, causing the buffer plate 1404 to reset, thereby automatically restoring the electrode to its position, thus solving the tipping problem and improving the working efficiency of the equipment.

[0026] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A laser welding apparatus for lithium battery processing, characterized by, Include: The base is provided with an outer protective shell with the top of the operation personnel, the inside of the base is fixedly connected with an electric cylinder, the top of the electric cylinder is fixedly connected with a material positioning device; The top of the material positioning device is fixedly connected with a fixed column, the inside of the top of the fixed column is fixedly connected with a hydraulic block one, the top of the hydraulic block one is movably connected with a push block one, the top of the push block one is fixedly connected with a lifting plate, the hydraulic block one communicates with the inside of the hydraulic block two through the hose one, the two sides of the material positioning device are fixedly connected with an L-shaped support, the top of the L-shaped support is fixedly connected with a hydraulic block two, the hydraulic block two is movably connected with a positioning plate two through a transmission part.

2. The laser welding apparatus for processing of lithium batteries according to claim 1, characterized in that: The transmission part includes a push block two, a positioning plate one, a rotating shaft one, a rotating block, a hydraulic block three, a hose two, the inside of the hydraulic block two is movably connected with a push block two, the inside of the push block two is fixedly connected with a positioning plate one, the inside of the positioning plate one is rotatably connected with a rotating shaft one, the outside of the rotating shaft one is fixedly connected with a positioning plate two, the inside of the hydraulic block two communicates with the inside of the hydraulic block three through the hose two, the rear side of the hydraulic block three is fixedly connected with the rear side of the positioning plate one through a fixed support, the inside of the hydraulic block three is movably connected with a push block, the inside of the push block is fixedly connected with a rotating block, the top of the rotating block is fixedly connected with the bottom of the rotating shaft one.

3. The laser welding apparatus for processing of lithium batteries as claimed in claim 1 wherein: The top of the outer protective shell is provided with a smoke removal device for absorbing smoke, the inside of the outer protective shell is movably connected with a conveyor belt device for conveying materials, the inside of the outer protective shell is movably connected with a laser welding machine, the inside of the outer protective shell is movably connected with an auxiliary fixing device, the inside of the outer protective shell is fixedly connected with a welding positioning device, the top of the conveyor belt device is movably connected with a lithium battery, the two sides of the conveyor belt device are fixedly connected with a fixed frame one, the push block one and the hydraulic block one are fixedly connected with a spring three, the inside of the outer protective shell is fixedly connected with an automatic feeding assembly on the left and right sides, the top of the welding positioning device is fixedly connected with an anti-toppling assembly.

4. The laser welding apparatus for processing of lithium batteries of claim 1, wherein: The number of lifting plates is four, every two lifting plates form a group, each group of lifting plates is symmetrically distributed about the center line of the material positioning device, the number of push blocks one is four, the number of hydraulic blocks one is four, the number of fixed columns is four, the number of hoses one is four, the number of L-shaped supports is four, the number of hydraulic blocks two is four, the number of push blocks two is four, the number of positioning plates one is four, the number of rotating shafts one is four, the number of positioning plates two is four, the number of rotating blocks is four, the number of hydraulic blocks three is four, and the number of hoses two is four.

5. The laser welding apparatus for processing of lithium batteries as claimed in claim 3 wherein: The automatic feeding assembly comprises a slope plate, a limiting baffle, a storage box, a fixed plate one, a push block three, a hydraulic block four, a hose three, a hydraulic block five, a push block four, a spring one, a sliding block and a clamping groove.

6. A laser welding apparatus for processing lithium batteries as defined in claim 5, wherein: The number of the slope plates is two, each of the slope plates is symmetrically distributed about the middle line of the base, the number of the limiting baffles is twelve, every two of the limiting baffles form a group, the number of the storage boxes is two, the number of the fixed plates one is four, the number of the push block threes is four, the number of the hydraulic block fours is four, the number of the hose threes is four, the number of the hydraulic block fives is two, the number of the push block fours is six, every three of the push block fours form a group, the number of the spring ones is twelve, and the number of the sliding blocks is six.

7. The laser welding apparatus for processing of lithium batteries as claimed in claim 5 wherein: The size of the clamping groove is consistent with the size of the pole piece required by the lithium battery welding.

8. The laser welding apparatus for processing of lithium batteries of claim 5, wherein: The anti-toppling assembly comprises an inclined block, a fixed frame two, a limiting slope plate, a buffer plate and a spring two.

9. A laser welding apparatus for processing lithium batteries as defined in claim 8, wherein: The number of the inclined blocks is six, the number of the fixed frames two is twelve, every two of the fixed frames two form a group, the number of the limiting slope plates is six, the number of the buffer plates is six, and the number of the spring twos is twelve.

10. The laser welding apparatus for processing of lithium batteries of claim 8, wherein: The length of the inclined block is consistent with the interval between two limiting baffles.

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