A lithium battery unit encapsulation mechanism

Abstract

The present invention relates to the field of lithium battery production, and particularly to a lithium battery unit encapsulation mechanism. There are a double-sided adhesive pasting area 1, a first encapsulation area 2, a second encapsulation area 3, and a spot welding area 4; a battery input conveyor belt 11 is provided in the double-sided adhesive pasting area 1. On one side of the transmission end of the battery input conveyor belt, there is a double-sided adhesive pasting table 12. Above the pasting table, there is a double-sided adhesive pasting machine 13. On one side of the pasting table, there is a first cylinder 14. The battery on the double-sided adhesive pasting table 12 is pushed by the pushing cylinder 14 to paste the double-sided adhesive and be transported; this device can paste the double-sided adhesive row by row on the battery, perform staggered stacking encapsulation through the double-sided adhesive pasting area, and encapsulate the two dozen batteries encapsulated in the first encapsulation area through the second encapsulation area to complete the encapsulation work of a group of batteries.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery production, and particularly to a glue wrapping mechanism for lithium battery units. Background Art

[0002] Lithium batteries are one of the most important components of electric vehicles. The lithium battery pack of a vehicle is formed by spot welding a large number of cylindrical single lithium batteries in series and parallel. At present, when producing lithium battery packs, workers first paste double-sided tape on a row of batteries, then put them into a stacking box, stack and bond them alternately. After the bonding is completed, the tape needs to be wound around them, that is, the first step is completed. Then, two identical battery packs are stacked in reverse, wrapped with tape, and sent for spot welding in series to complete a battery pack. Then, according to the requirements of different vehicles, multiple battery packs are installed. Multiple battery packs form an automotive battery panel. The number of lithium batteries in an electric vehicle can reach several thousand. Therefore, relying solely on manual labor for glue wrapping is very time-consuming and laborious, and at the same time, the tape is prone to bending and curling during the glue wrapping process. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and meet the actual needs, and provide a glue wrapping mechanism for lithium battery units.

[0004] To achieve the purpose of the present invention, the technical solution adopted by the present invention is: a glue wrapping mechanism for lithium battery units, including a double-sided tape sticking area 1, a first glue wrapping area 2, a second glue wrapping area 3, and a spot welding area 4; the double-sided tape sticking area 1 is provided with a battery input conveyor belt 11, on one side of the transmission end of the battery input conveyor belt, there is a double-sided tape sticking table 12, above the sticking table, there is a double-sided tape sticking machine 13, and on one side of the sticking table, there is a first cylinder 14. The battery on the double-sided tape sticking table 12 is pushed by the pushing cylinder 14 for sticking double-sided tape and transferring; the first glue wrapping area 2 is provided with a first sticking bracket 21 and a first rotary sticking machine 22. The bottom of the first sticking bracket 21 is connected with a rotary cylinder 2121. The first sticking bracket 21 is driven by the rotary cylinder 2121 to alternately stack battery packs. On one side of the first sticking bracket 21, there is a first rotary sticking machine 22. The first sticking bracket 21 is sent to the first rotary sticking machine 22 by the rotary cylinder 2122 at the bottom for rotary sticking; the second glue wrapping area includes a transfer conveyor belt 31, a second sticking bracket 32, and a second rotary sticking machine 33. The battery packs wrapped into a dozen in the first glue wrapping area are pushed onto the transfer conveyor belt 31. At the end of the transfer conveyor belt, there is a 180° rotary pushing table 35. On one side of the 180° rotary pushing table 35, there is a second sticking bracket 32. The outer circle of the second sticking bracket is provided with a second rotary sticking machine. Above the second sticking bracket 32, there is a second cylinder 321; the spot welding area is provided with a spot welding table 41, and the spot welding table 41 is arranged on one side below the second sticking bracket.

[0005] Each row is provided with more than one battery. The first encapsulation area encapsulates a dozen battery packs, which are provided with more than three rows of batteries and the number of rows is odd. The second encapsulation area alternately stacks two dozen batteries for encapsulation.

[0006] The structures of the first rotary adhesive applicator 22 and the second rotary adhesive applicator 33 are the same, including a rotary ring 221, a tape supply roll 222, a guide roller 223, an adhesive applicator roller 224, and a cutting knife 225. An opening is provided on one side of the rotary ring 331. The opening of the rotary ring of the first rotary adhesive applicator is larger than the width of the first adhesive application bracket, and the opening of the rotary ring of the second rotary adhesive applicator is larger than the width of the second adhesive application bracket. When stopped, the opening of the first rotary adhesive applicator is at the bottom, and the opening of the second rotary adhesive applicator is at the top. A tape supply roll 222, a guide roller 223, an adhesive applicator roller 224, and a cutting knife 225 are arranged between the ring surfaces of the rotary ring. The rotating shafts at both ends of the adhesive applicator roller 224 are connected with a push plate 226, and the push plate 226 is driven by an adhesive application cylinder 227. A cutting knife 225 is arranged on the side of the adhesive applicator roller away from the tape supply roll and the guide roller, and the cutting knife is driven by a cutting cylinder 228 for cutting. The diameter of the rotary ring of the second rotary adhesive applicator is larger than that of the rotary ring of the first rotary adhesive applicator. Tooth patterns are arranged along the circumferential direction of the outer ring of the rotary ring, and a plurality of gears 2211 meshing with the tooth patterns are arranged on the outer ring of the rotary ring, and one of the gears is connected with a rotary motor 2212.

[0007] The push plate and the adhesive applicator roller are connected through an elastic member 229. The elastic member includes a push rod 2291, a first spring 2292, and a first spring groove 2293. One end of the first spring groove is fixed on the push plate 226, and an opening for the push rod to stretch is provided at the other end. A piston block 2293 is arranged at the end of the push rod extending into the first spring groove. A first spring is arranged between the piston block 2293 and the inner bottom of the first spring groove. A bearing is sleeved at the end of the push rod, and the rotating shaft at the end of the adhesive applicator roller is inserted into the bearing. An arc-shaped guide plate 2241 is arranged on the side of the adhesive applicator roller close to the guide roller 224.

[0008] A positioning baffle 111 is provided at the transmission end of the battery input conveyor belt 11. A third cylinder 112 is provided on one side, and a double-sided adhesive pasting table 12 is provided on the other side. Above the middle of the double-sided adhesive pasting table 12, there is a double-sided adhesive pasting machine 13. The double-sided adhesive pasting machine 13 includes a pasting machine bracket 131, a tape feeding reel 132, a tape winding reel 133, and an elastic pasting plate 134. The elastic pasting plate 134 is inclined and hinged at the lower end of the pasting machine bracket, and a return torsion spring is provided at its hinged end. The distance between the elastic pasting plate and the pasting table under normal conditions is less than the diameter of the battery. The tape feeding reel and the tape winding reel are sequentially arranged on the bracket above the elastic pasting plate; above the pasting table on the side of the double-sided adhesive pasting machine away from the pushing cylinder, there is a limiting plate 135; at the end of the pasting table on the side where the limiting plate is provided, there is an elastic feeding plate 136 hinged. A return torsion spring is provided at the hinged end of the elastic feeding plate. Under normal conditions, the elastic feeding plate is inclined obliquely upward.

[0009] The first pasting bracket 21 includes a vertical plate 211, a horizontal plate 212, an elastic plate 213, and an elastic limiting block 214; the main body of the first pasting bracket is composed of two vertical plates 211 and a horizontal plate 212 at the bottom. A support plate 215 is provided in the middle of the two vertical plates. An elastic plate 213 is provided above the support plate 214. A second spring 216 is provided between the support plate and the elastic plate; on the side of the two vertical plates away from the pasting table, there is a battery baffle 217; at both ends of the upper side of the two vertical plates, there are telescopic grooves 218. One end of the elastic limiting block can be telescopically arranged in the telescopic groove, and a third spring 2181 is provided between it and the telescopic groove. The protruding end of the elastic limiting block is a plate body inclined downward to the opposite side; directly above the two elastic limiting blocks, there is a stacking pressing cylinder 219, and the end of the air pressure rod at the bottom of the stacking pressing cylinder is connected with a pressing block; the rotating cylinder 2121 at the bottom of the first pasting bracket is arranged on a sliding table lead screw, and the sliding table lead screw connected by the rotating cylinder 2122 extends all the way to directly below the first rotary pasting machine.

[0010] On one side at the same height position as the support plate, there is a telescopic plate 34. On one side of the telescopic plate 34, there is a transfer conveyor belt 31. The telescopic plate includes fixed plates 341 on both sides and a movable plate 342 in the middle. The movable plate is driven by a telescopic cylinder 343; on the side of the first pasting bracket away from the telescopic plate, there is a fourth cylinder 23.

[0011] The second adhesive pasting bracket 32 is provided with vertical connecting plates 322 around it. The upper parts of the vertical connecting plates 322 are all arranged on a horizontal connecting plate 324. A second air cylinder 321 is arranged above the horizontal connecting plate 324. Support plates 323 are arranged below the vertical connecting plates 322 on both sides of the rotating ring of the second rotary adhesive pasting machine. The tops of the vertical connecting plates are all arranged on a connecting plate. The rotating ring of the second rotary adhesive pasting machine rotates and pastes adhesive between the two support plates below the connecting plate.

[0012] A rotating air cylinder is arranged at the bottom of the 180° rotating pushing table 35. Under normal conditions, a material positioning stopper 351 is arranged on one side of the 180° rotating pushing table 35 away from the transfer conveyor belt 31. A fifth air cylinder 36 is arranged on one side of the 180° rotating pushing table 35 away from the second adhesive pasting bracket 32. A pushing limit plate 361 is arranged at the end of the air pressure rod of the fifth air cylinder 36. The pushing limit plate is in the shape of "┑".

[0013] On both sides of the second adhesive pasting bracket 32 close to the spot welding table 41, movable baffles 411 are arranged. The two movable baffles 411 on both sides are attached to the second adhesive pasting bracket 32. Threaded holes are arranged on the lower sides of the two movable baffles 411. A threaded rod 412 is arranged in the threaded holes of the two movable baffles 411. The threads at both ends of the threaded rod are opposite. A first gear 413 is arranged at one end of the threaded rod. The first gear meshes with a driving wheel 414. The driving wheel is driven by a motor 415. A first sprocket 416 is coaxially arranged with the driving wheel. A second sprocket 417 is arranged on one side of the first sprocket. The first sprocket is larger than the second sprocket. The two sprockets are matched by a chain. A second gear 418 is arranged on one side of the second sprocket and coaxially with it. A battery pack pushing plate 419 is arranged above the second gear. Tooth patterns are arranged along the moving direction in the middle of the bottom of the battery pack pushing plate, and the tooth patterns mesh with the second gear.

[0014] The beneficial effects of the present invention are as follows:

[0015] This device can paste double-sided adhesive on the batteries row by row, stack and wrap the adhesive in a staggered manner in the double-sided adhesive pasting area, and then wrap the two dozen batteries wrapped in the first wrapping area through the second wrapping area to complete the wrapping work of a group of batteries. Description of the Drawings

[0016] The following further describes the present invention in conjunction with the drawings and embodiments.

[0017] Figure 1 It is a front view schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the double-sided adhesive pasting area;

[0019] Figure 3 、 5It is a schematic diagram of the first rubber coating area;

[0020] Figure 4 It is a cross-sectional view of the first rotary rubber coating machine;

[0021] Figure 6 It is a cross-sectional view of the telescopic groove;

[0022] Figure 7 It is a cross-sectional view of the elastic part;

[0023] Figure 8 It is a schematic diagram of the second rubber coating area;

[0024] Figure 9 It is a bottom view of the telescopic plate;

[0025] Figure 10 It is a schematic diagram of the spot welding table;

[0026] Figure 11 It is a bottom view of the battery pack pushing plate. Specific implementation mode

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0028] The present invention discloses a lithium battery unit rubber coating mechanism, as Figure 1 shown, there are a double-sided adhesive rubber coating area 1, a first rubber coating area 2, a second rubber coating area 3 and a spot welding area 4; a battery input conveyor belt 11 is arranged in the double-sided adhesive rubber coating area 1, a double-sided adhesive rubber coating table 12 is arranged on one side of the transmission end of the battery input conveyor belt, a double-sided adhesive rubber coating machine 13 is arranged above the rubber coating table, and a first cylinder 14 is arranged on one side of the rubber coating table. The battery on the double-sided adhesive rubber coating table 12 is pushed by the pushing cylinder 14 for double-sided adhesive pasting and transfer; a first rubber coating bracket 21 and a first rotary rubber coating machine 22 are arranged in the first rubber coating area 2. A rotary cylinder 2121 is connected to the bottom of the first rubber coating bracket 21, and the first rubber coating bracket 21 is driven by the rotary cylinder 2121 to alternately stack battery packs. A first rotary rubber coating machine 22 is arranged on one side of the first rubber coating bracket 21, and the first rubber coating bracket 21 is sent to the first rotary rubber coating machine 22 by the rotary cylinder 2122 at the bottom for rotary rubber coating; the second rubber coating area includes a transfer conveyor belt 31, a second rubber coating bracket 32 and a second rotary rubber coating machine 33. The battery packs coated in a dozen in the first rubber coating area are pushed onto the transfer conveyor belt 31. An 180° rotary pushing table 35 is arranged at the end of the transfer conveyor belt. A second rubber coating bracket 32 is arranged on one side of the 180° rotary pushing table 35. A second rotary rubber coating machine is arranged on the outer circle of the second rubber coating bracket, and a second cylinder 321 is arranged above the second rubber coating bracket 32; a spot welding table 41 is arranged in the spot welding area, and the spot welding table 41 is arranged on one side below the second rubber coating bracket.

[0029] The lithium batteries that have been produced and passed the inspection are input into the device through the battery input conveyor belt 11 from the inspection area. In the double-sided adhesive pasting area 1, a double-sided adhesive is pasted on each row of lithium batteries through the double-sided adhesive pasting table 12. Then, it is sent to the first encapsulation area 2 for the first step of encapsulation. Each row is provided with more than one battery, generally 4-5 lithium batteries. One dozen battery packs encapsulated in the first encapsulation area are provided with more than three rows of batteries and the number of rows is odd. Every time a row of batteries is stacked, the first adhesive pasting bracket 21 will rotate 180° to achieve alternating stacking. After encapsulation is completed, it is sent to the second encapsulation area 3 to alternately stack two dozen batteries encapsulated in the first encapsulation area 2, and secondary encapsulation is performed to complete the encapsulation of a group of lithium batteries. Then, it enters the electric welding area for spot welding.

[0030] As Figure 1 , 3 , Figures 4, 7 show that the structures of the first rotary adhesive pasting machine 22 and the second rotary adhesive pasting machine 33 are the same, including a rotary ring 221, a tape supply roll 222, a guide roller 223, an adhesive pasting roller 224, and a cutting knife 225. An opening is provided on one side of the rotary ring 331. The opening of the rotary ring of the first rotary adhesive pasting machine is larger than the width of the first adhesive pasting bracket, and the opening of the rotary ring of the second rotary adhesive pasting machine is larger than the width of the second adhesive pasting bracket. When stopped, the opening of the first rotary adhesive pasting machine is at the bottom, and the opening of the second rotary adhesive pasting machine is at the top. A tape supply roll 222, a guide roller 223, an adhesive pasting roller 224, and a cutting knife 225 are arranged between the ring surfaces of the rotary ring. The rotating shafts at both ends of the adhesive pasting roller 224 are connected with a pushing plate 226, and the pushing plate 226 is driven by an adhesive pasting cylinder 227. A cutting knife 225 is arranged on the side of the adhesive pasting roller away from the tape supply roll and the guide roller, and the cutting knife is driven by a cutting cylinder 228 for cutting. The diameter of the rotary ring of the second rotary adhesive pasting machine is larger than that of the rotary ring of the first rotary adhesive pasting machine. Tooth patterns are arranged along the circumference of the outer ring of the rotary ring, and a plurality of gears 2211 meshing with the tooth patterns are arranged on the outer ring of the rotary ring. One of the gears is connected with a rotary motor 2212.

[0031] The pushing plate and the glue - sticking roller are connected by an elastic member 229. The elastic member includes a pushing rod 2291, a first spring 2292, and a first spring groove 2293. One end of the first spring groove is fixed on the pushing plate 226, and the other end is provided with an opening for the pushing rod to stretch. The end of the pushing rod extending into the first spring groove is provided with a piston block 2293. A first spring is arranged between the piston block 2293 and the inner bottom of the first spring groove. A bearing is sleeved on the end of the pushing rod, and the rotating shaft at the end of the glue - sticking roller is inserted into the bearing. An arc - shaped guiding plate 2241 is arranged on one side of the glue - sticking roller close to the guiding roller 224. When glue - sticking is required, first, the glue - sticking roller 224 moves forward to drive the adhesive tape to press against the battery pack. Then, the first rotary glue - sticking machine and the second rotary glue - sticking machine rotate slowly. Under the action of the elastic member, the glue - sticking roller 224 rolls while sticking and feeding the glue. When rotating a certain distance, the adhesive tape has an adhesive force, the glue - sticking roller 224 resets, and the rotating ring 221 rotates rapidly. When the glue - sticking is completed, the glue - sticking roller 224 pushes again to stick on the battery, and the cutting knife 225 presses the adhesive tape forward. When the glue - sticking roller 224 resets, it also pulls up part of the adhesive tape, so that the cutting knife 225 can complete the cutting. The end of the adhesive tape adheres to the cutting edge. When the glue - sticking roller 224 resets, there is a travel adhesive tape for lower - side glue - sticking reserved between the glue - sticking roller 224 and the guiding roller 223, so that the adhesive tape will not come off when the glue - sticking roller 224 pushes.

[0032] As Figure 2 shown, a positioning baffle 111 is arranged at the transmission end of the battery input conveyor belt 11. When the battery is transmitted to the end of the battery input conveyor belt 11, it abuts against the positioning baffle 111. A third air cylinder 112 is arranged on one side, and a double - sided adhesive tape glue - sticking table 12 is on the other side. Under the action of the third air cylinder 112, it is pushed to the double - sided adhesive tape glue - sticking table 12. A double - sided adhesive tape glue - sticking machine 13 is arranged above the middle of the double - sided adhesive tape glue - sticking table 12 for glue - sticking through the double - sided glue - sticking table.

[0033] The double-sided tape laminating machine 13 includes a laminating machine bracket 131, a tape feed roll 132, a tape take-up roll 133 and an elastic laminating plate 134. The elastic laminating plate 134 is hinged at an angle at the lower end of the laminating machine bracket, and a reset torsion spring is arranged at its hinged end. The distance between the elastic laminating plate and the laminating platform is smaller than the battery diameter under normal conditions, and a tape feed roll and a tape take-up roll are arranged in sequence on the bracket above the elastic laminating plate; a limit plate 135 is arranged above the laminating platform of the double-sided tape laminating machine away from the pushing cylinder; an elastic feeding plate 136 is hinged at the end of the laminating platform on the side of the limit plate, and a reset torsion spring is arranged at the hinged end of the elastic feeding plate. Under normal conditions, the elastic feeding plate is tilted obliquely upward. Under the action of the reset torsion spring, the elastic adhesive plate 134 is tilted downward. When the battery is pushed by the push cylinder 14, when it is pushed to the elastic adhesive plate 134, the elastic adhesive plate 134 is lifted up under the action of the thrust and is tightly attached to the battery to attach double-sided tape to the battery. The limit plate 135 extends all the way to the first adhesive bracket 21. Although it is within the rotation range of the first adhesive bracket 21, the height of the limit plate 135 is higher than the entire first adhesive bracket 21, so the battery can be limited without collision. The role of the elastic feed plate 136 is to reserve a position for the first adhesive bracket to rotate between the double-sided adhesive bonding platform 12 and the first adhesive bracket, and the battery cannot be pushed in smoothly in the reserved position, so an elastic feed plate 136 is set. When the battery is pushed, the elastic feed plate 136 is forced to fall down, and it is returned after completion.

[0034] like Figure 3 , 5 As shown in , 6, the first glue sticking bracket 21 includes a vertical plate 211, a horizontal plate 212, an elastic plate 213 and an elastic limit block 214; the first glue sticking bracket body is composed of two vertical plates 211 and a horizontal plate 212 at the bottom, a support plate 215 is arranged in the middle of the two vertical plates, an elastic plate 213 is arranged above the support plate 214, and a second spring 216 is arranged between the support plate and the elastic plate; a battery baffle 217 is arranged on the side of the two vertical plates away from the glue sticking platform; telescopic grooves are respectively arranged at both ends of the upper side of the two vertical plates 218, one end of the elastic limit block can be telescopically arranged in the telescopic groove, and a third spring 2181 is arranged between it and the telescopic groove, and the protruding end of the elastic limit block is a plate body inclined downward toward the opposite side; a stacking pressing cylinder 219 is arranged directly above the two elastic limit blocks, and the end of the pneumatic rod at the bottom of the stacking pressing cylinder is connected to a pressing block; the bottom of the rotating cylinder 2121 at the bottom of the first glue laminating bracket is arranged on the sliding table screw, and the sliding table screw connected to the rotating cylinder 2122 extends all the way to the bottom of the first rotary glue laminating machine.

[0035] like Figure 8 , 9As shown, a telescopic plate 34 is provided at the same height as the support plate, a transfer conveyor belt 31 is provided at one side of the telescopic plate 34, the telescopic plate includes fixed plates 341 at both sides and a movable plate 342 in the middle, and the movable plate is driven by a telescopic cylinder 343; a fourth cylinder 23 is provided at the side of the first glue-applying bracket away from the telescopic plate. The function of the telescopic plate 34 is the same as that of the elastic feeding plate 136.

[0036] like Figure 8 As shown, vertical connecting plates 322 are arranged around the second glue laminating bracket 32, and horizontal connecting plates 324 are arranged above the vertical connecting plates 322. A second cylinder 321 is arranged above the horizontal connecting plates 324, and support plates 323 are arranged below the vertical connecting plates 322 on both sides of the rotating ring of the second rotary glue laminating machine, and the tops of the vertical connecting plates are arranged on the connecting plates. The rotating ring of the second rotary glue laminating machine rotates to glue between the two support plates below the connecting plates.

[0037] like Figure 8 As shown, a rotating cylinder is arranged at the bottom of the 180° rotating pushing platform 35; under normal conditions, a material positioning block 351 is arranged on the side of the 180° rotating pushing platform 35 away from the transfer conveyor belt 31, and a fifth cylinder 36 is arranged on the side of the 180° rotating pushing platform 35 away from the second glue-sticking bracket 32. A push limit plate 361 is arranged at the end of the pneumatic rod of the fifth cylinder 36, and the push limit plate is in a "┑" shape.

[0038] like Figure 10 , 11 As shown, movable baffles 411 are provided on both sides of the second glue-applying bracket 32 close to the spot welding platform 41, and the movable baffles 411 on both sides are fitted with the second glue-applying bracket 32, and threaded holes are provided on the lower sides of the two movable baffles 411, and threaded rods 412 are provided in the threaded holes of the two movable baffles 411, and the threads at both ends of the threaded rods are opposite, and a first gear 413 is provided at one end of the threaded rod, and the first gear is meshed with a driving wheel 414, and the driving wheel is driven by a motor 415, and a first sprocket 416 is coaxially provided on the driving wheel, and a second sprocket 417 is provided on one side of the first sprocket, the first sprocket is larger than the second sprocket, and the two sprockets are matched by a chain; a second gear 418 coaxial with the second sprocket is provided on one side of the second sprocket, and a battery pack pushing plate 419 is provided above the second gear, and a tooth pattern is provided in the middle of the bottom of the battery pack pushing plate along its movement direction, and the tooth pattern is meshed with the second gear. A linkage method is adopted so that when the battery pack pushing plate 419 pushes the battery after the rubber coating is completed, the movable baffle 411 opens accordingly.

[0039] The above are only embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or any direct or indirect application in related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A lithium battery unit encapsulation mechanism, characterized in that: The double-sided adhesive pasting area, the first encapsulation area, the second encapsulation area, and the spot welding area; a battery input conveyor belt is provided in the double-sided adhesive pasting area, a double-sided adhesive pasting table is provided on one side of the transmission end of the battery input conveyor belt, a double-sided adhesive pasting machine is provided above the pasting table, and a first cylinder is provided on one side of the pasting table. The battery on the double-sided adhesive pasting table is pushed by the first cylinder to paste double-sided adhesive and be transported; the first encapsulation area is provided with a first pasting bracket and a first rotary pasting machine. The bottom of the first pasting bracket is connected to a rotary cylinder, and the rotary cylinder drives the first pasting bracket to alternately stack battery packs. A first rotary pasting machine is provided on one side of the first pasting bracket. The first pasting bracket is sent to the first rotary pasting machine by the rotary cylinder at the bottom for rotary pasting; the second encapsulation area includes a transfer conveyor belt, a second pasting bracket, and a second rotary pasting machine. The battery packs encapsulated into a dozen in the first encapsulation area are pushed onto the transfer conveyor belt. An 180° rotary pushing table is provided at the end of the transfer conveyor belt. A second pasting bracket is provided on one side of the 180° rotary pushing table. A second rotary pasting machine is provided on the outer circle of the second pasting bracket, and a second cylinder is provided above the second pasting bracket; a spot welding table is provided in the spot welding area, and the spot welding table is provided on one side below the second pasting bracket; the structures of the first rotary pasting machine and the second rotary pasting machine are the same, including a rotary ring, a tape supply roll, a guiding roller, a pasting roller, and a cutting knife; an opening is provided on one side of the rotary ring. The opening of the rotary ring of the first rotary pasting machine is larger than the width of the first pasting bracket, and the opening of the rotary ring of the second rotary pasting machine is larger than the width of the second pasting bracket. When stopped rotating, the opening of the first rotary pasting machine is at the bottom, and the opening of the second rotary pasting machine is at the top; a tape supply roll, a guiding roller, a pasting roller, and a cutting knife are arranged between the ring surfaces of the rotary ring. The rotating shafts at both ends of the pasting roller are connected to a pushing plate. The pushing plate is driven by a pasting cylinder. A cutting knife is provided on the side of the pasting roller away from the tape supply roll and the guiding roller. The cutting knife is driven by a cutting cylinder to cut; the diameter of the rotary ring of the second rotary pasting machine is larger than that of the rotary ring of the first rotary pasting machine; tooth patterns are arranged along the circumferential direction on the outer circle of the rotary ring, and a plurality of gears meshing with the tooth patterns are provided on the outer circle of the rotary ring. One of the gears is connected to a rotary motor.

2. The encapsulation mechanism for a lithium battery unit according to claim 1, wherein: One or more batteries are arranged in each row. The dozen battery packs encapsulated in the first encapsulation area are provided with more than three rows of batteries and the number of rows is odd; two dozen batteries are alternately stacked in the second encapsulation area for encapsulation.

3. The encapsulation mechanism for a lithium battery unit according to claim 2, characterized in that: The pushing plate and the pasting roller are connected by an elastic member. The elastic member includes a pushing rod, a first spring, and a first spring groove; one end of the first spring groove is fixed on the pushing plate, and an opening for the pushing rod to stretch is provided at the other end. A piston block is arranged at the end of the pushing rod extending into the first spring groove. A first spring is arranged between the piston block and the inner bottom of the first spring groove. A bearing is sleeved on the end of the pushing rod, and the rotating shaft at the end of the pasting roller is inserted on the bearing; an arc-shaped guiding plate is arranged on the side of the pasting roller close to the guiding roller.

4. A lithium battery unit encapsulation mechanism according to claim 1, characterized in that: A positioning baffle is provided at the transmission end of the battery input conveyor belt. A third cylinder is provided on one side, and a double-sided tape sticking table is provided on the other side. Above the middle of the double-sided tape sticking table, there is a double-sided tape sticking machine. The double-sided tape sticking machine includes a sticking machine support, a tape feeding reel, a tape taking-up reel, and an elastic sticking plate. The elastic sticking plate is inclinedly hinged at the lower end of the sticking machine support, and a return torsion spring is provided at its hinged end. The distance between the elastic sticking plate and the sticking table under normal state is less than the diameter of the battery. Above the elastic sticking plate, a tape feeding reel and a tape taking-up reel are sequentially provided on the support; above the sticking table on the side of the double-sided tape sticking machine away from the first cylinder, there is a limit plate; at the end of the sticking table on the side where the limit plate is provided, there is an elastic feeding plate hinged, and a return torsion spring is provided at the hinged end of the elastic feeding plate. Under normal state, the elastic feeding plate is inclined obliquely upward.

5. The encapsulation mechanism for a lithium battery unit according to claim 4, characterized in that: The first sticking support includes a vertical plate, a horizontal plate, an elastic plate, and an elastic limit block; the main body of the first sticking support is composed of two vertical plates and a horizontal plate at the bottom. A support plate is provided in the middle of the two vertical plates. An elastic plate is provided above the support plate. A second spring is provided between the support plate and the elastic plate; on the side of the two vertical plates away from the sticking table, there is a battery baffle; at both ends of the upper sides of the two vertical plates, there are telescopic grooves respectively. One end of the elastic limit block is telescopically arranged in the telescopic groove, and a third spring is provided between it and the telescopic groove. The protruding end of the elastic limit block is a plate body inclined downward to the opposite side; above the two elastic limit blocks, there is a stacking pressing cylinder, and the end of the air pressure rod at the bottom of the stacking pressing cylinder is connected with a pressing block; below the rotating cylinder at the bottom of the first sticking support, it is arranged on a sliding table lead screw, and the sliding table lead screw connected by the rotating cylinder extends straight to the position directly below the first rotating sticking machine.

6. The encapsulation mechanism for a lithium battery unit according to claim 5, characterized in that: At the same height position as the support plate on one side, there is a telescopic plate. A transfer conveyor belt is provided on one side of the telescopic plate. The telescopic plate includes fixed plates on both sides and a movable plate in the middle. The movable plate is driven by a telescopic cylinder; on the side of the first sticking support away from the telescopic plate, there is a fourth cylinder.

7. A lithium battery unit encapsulation mechanism according to claim 6, characterized in that: The second sticking support is provided with vertical connecting plates around it. Above the vertical connecting plates, there are horizontal connecting plates. Above the horizontal connecting plates, there is a second cylinder. Below the vertical connecting plates on both sides of the rotating ring of the second rotating sticking machine, there are support plates. The tops of the vertical connecting plates are all arranged on the connecting plate. The rotating ring of the second rotating sticking machine rotates and sticks between the two support plates below the connecting plate.

8. A lithium battery unit encapsulation mechanism according to claim 7, characterized in that: At the bottom of the 180° rotating and pushing table, there is a rotating cylinder; under normal state, on the side of the 180° rotating and pushing table away from the transfer conveyor belt, there is a material positioning baffle. On the side of the 180° rotating and pushing table away from the second sticking support, there is a fifth cylinder. The end of the air pressure rod of the fifth cylinder is provided with a pushing limit plate, and the pushing limit plate is in the shape of "┑".

9. A lithium battery unit encapsulation mechanism according to claim 8, characterized in that: On both sides of the second adhesive pasting bracket near the spot welding table, there are movable baffles. The movable baffles on both sides are in contact with the second adhesive pasting bracket. There are threaded holes on the lower sides of the two movable baffles. Threaded rods are arranged in the threaded holes of the two movable baffles. The threads at both ends of the threaded rod are opposite. One end of the threaded rod is provided with a first gear. The first gear meshes with a driving wheel. The driving wheel is driven by a motor. The driving wheel is coaxially provided with a first sprocket. A second sprocket is arranged on one side of the first sprocket. The first sprocket is larger than the second sprocket. The two sprockets are matched by a chain. A second gear coaxial with it is arranged on one side of the second sprocket. A battery pack pushing plate is arranged above the second gear. Tooth patterns are arranged in the middle of the bottom of the battery pack pushing plate along its moving direction. The tooth patterns are meshed with the second gear.

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