Lithium battery, lithium battery processing and assembling machine and lithium battery assembling method

Abstract

The invention discloses a lithium battery, a lithium battery processing and assembling machine and a lithium battery assembling method, and relates to the technical field of lithium battery processing equipment.The lithium battery processing and assembling machine comprises a gluing machine base body, a glue dispensing gun arranged on the gluing machine base body and a gluing assembly, a plurality of sliding openings which are arranged in a penetrating manner are formed in the mounting shell at equal intervals; according to the invention, a unique sliding opening design and a gathering mechanism of the sliding block body are adopted, so that the whole device is relatively small in occupied area, and meanwhile, the space can be efficiently utilized to assemble and glue a battery cell, and through sliding of the sliding block body and staggered movement of the petal-shaped blocks, the assembly efficiency is greatly improved. Each battery cell can be glued and assembled in a short time, the efficient parallel processing capacity is achieved, in the gluing process, the battery cells gradually move in a staggered mode along with gathering of the sliding block body, a compact arrangement is formed, and the compactness and stability between the battery cells are improved through the arrangement mode.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery processing equipment, and in particular to a lithium battery, a lithium battery processing and assembly machine, and a lithium battery assembly method. Background Art

[0002] With the growth in sales of new energy vehicles, the demand for lithium batteries is also expanding. Batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and uses non-aqueous electrolyte solutions. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries are mostly rectangular structures. Lithium-ion batteries can be directly made into an integral rectangular structure, or they can be made by assembling multiple individual lithium battery cells and then fixing the positive and negative electrodes. Lithium battery modules are assembled from multiple groups of lithium battery cells. During assembly, the lithium battery cells need to be fixed with adhesives.

[0003] The existing Chinese patent (publication number: CN117276682B) discloses an assembly equipment for lithium battery production and its operation method, including a workbench; a servo motor is fixedly connected to the top of the workbench through a connecting plate, and a rotating column is provided at the output end of the servo motor; a placement plate is fixedly connected to the outer wall of the rotating column; a placement groove is provided at the top of the placement plate; a first slide groove is provided on both side walls of the placement groove; a group of receiving plates are evenly slidably connected in the first slide groove; the bottom end of the receiving plate is pushed by an equidistant pushing member; a pair of symmetrically distributed limit plates are provided on the receiving plate, and the limit plates fix the lithium battery monomer placed on the receiving plate through a fixing component; an inclined block is fixedly connected to the top of the workbench, and a group of glue coating members are provided on the side walls of the inclined block; a support block is fixedly connected to the bottom end of the placement plate; so as to solve the problem that the operation is cumbersome and the assembly quality is poor when a group of lithium battery monomers are manually bonded and assembled.

[0004] During the above-mentioned lithium battery assembly process, multiple battery cells are placed on multiple suction cups through a robot arm, and then the multiple suction cups are driven to approach synchronously by a telescopic connecting rod mechanism, so as to bond multiple battery cells at the same time. Although it can also fix the battery cells, during the fixing process, the multiple horizontally arranged suction cups and the long telescopic connecting rod mechanism will occupy a large usable space, which is undoubtedly inconvenient for some workshops with limited space. Summary of the invention

[0005] The object of the present invention is to provide a lithium battery, a lithium battery processing and assembly machine and a lithium battery assembly method to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides a lithium battery processing and assembly machine, including a glue coating machine base body, a glue gun and a glue assembly arranged on the glue coating machine base body, and the glue assembly includes:

[0007] The mounting shell has a spherical cavity, and a plurality of sliding openings are evenly spaced on the mounting shell, and the depth of the sliding openings in the spherical cavity gradually increases from the top to the bottom;

[0008] A plurality of slider bodies are respectively slidably connected to corresponding sliding openings, and a petal-shaped block is provided at the upper end of each slider body for installing a battery cell;

[0009] A plurality of driving mechanisms are respectively connected to the lower ends of the slider bodies, and are used to drive the slider bodies to slide along the sliding openings, so that the petal blocks gradually gather together and the battery cells move alternately to complete the gluing operation.

[0010] Furthermore, each of the petal-shaped blocks is provided with a fixing component.

[0011] The fixing assembly includes a second connecting plate vertically connected to the top of the petal-shaped block, and the left and right second connecting plates are opposite to each other and staggered front and back;

[0012] Air suction cups, a plurality of which are arranged on one side opposite to each second connecting plate;

[0013] A compression air bag is connected to the top of the second connecting plate and is in communication with the second connecting plate and the air suction cup;

[0014] The outer surface of the petal-shaped block is an arc surface, which matches the spherical cavity.

[0015] Furthermore, the driving mechanism comprises:

[0016] A first driving assembly, whose driving end is connected to the slider body, is used to drive the slider body to move toward or away from the top surface of the glue coating machine base body;

[0017] The second driving assembly, whose driving end is connected to the first driving assembly, is used to drive the first driving assembly to move in a direction close to or away from the central axis of the mounting shell.

[0018] Further, the first driving assembly includes a telescopic cylinder arranged above the glue coating machine base body;

[0019] The plug block is rotatably connected in the slider body and is connected with the telescopic end of the telescopic cylinder.

[0020] Further, the second driving assembly includes a transmission plate rotatably arranged above the glue coating machine base body;

[0021] Connecting rods, the number of which is at least four and which are in an "L" shape, one end of each of the four connecting rods being rotatably connected to a corner position of the transmission plate;

[0022] A connecting column connected to the other end of the connecting rod;

[0023] A first connecting plate, wherein the first connecting plate is rotatably connected to the connecting column, and a top of the first connecting plate is rotatably connected to the telescopic cylinder;

[0024] Wherein, a fixed disc is connected to the glue coating machine base body, a connecting groove is opened on the fixed disc, the first connecting plate is slidably connected to the connecting groove, and a servo motor for driving the transmission plate to rotate is connected to the fixed disc.

[0025] Furthermore, a mounting recess is provided at the center of the mounting housing, a plurality of communication ports are provided through the mounting recess, the plurality of sliding openings correspond to the plurality of communication ports, and the diameter of the communication ports is larger than the size of the slider body;

[0026] The slider body includes:

[0027] A first sliding block is slidably connected to the sliding opening, wherein the first sliding block is provided with a mounting groove opening upward, and a through hole is provided at the bottom of the groove;

[0028] A second sliding block, one end of which extends from the through hole into the mounting groove, the side wall of the extending portion is rotatably connected to the mounting groove, and a slot is provided at the upper end, and the other end extends downward and is connected to the telescopic cylinder;

[0029] The bottom of the petal-shaped block is provided with an inserting rod matching the slot.

[0030] A lithium battery comprises a positive electrode, a negative electrode, an electrolyte, a separator and a shell.

[0031] A lithium battery assembly method comprises the following steps:

[0032] S1. Use a manipulator to place the battery cell to be fixed on the petal-shaped block, and plug the petal-shaped block into the slider body;

[0033] S2. Fix the battery cell with a fixing assembly. After fixation, apply glue to the battery cell with a glue gun;

[0034] S3, start the telescopic cylinder to drive the slider body and the petal-shaped block to slide along the sliding opening. When sliding to the bottom of the installation shell, the petal-shaped block forms a hemispherical shape. At this time, the battery cell splicing is completed, and the plug rod and the plug block fall off from each other;

[0035] S4. The fallen plug rod is moved into the installation recessed block, and gravity is used to detect the uniformity of the glue coating on the battery cell. When the glue coating is uniform, the deviation of the petal-shaped block is small, and when the glue coating is uneven, the deviation of the petal-shaped block is large.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The unique sliding opening design and the gathering mechanism of the slider body make the entire device occupy a relatively small area while being able to efficiently utilize space for the assembly and gluing of the battery cells. Through the sliding of the slider body and the staggered movement of the petal blocks, each battery cell can be glued and assembled in a short time, achieving efficient parallel processing capabilities. During the gluing process, the battery cells gradually stagger as the slider body gathers, forming a compact arrangement. This arrangement improves the compactness and stability between the battery cells.

[0038] 2. A real-time glue coating uniformity detection mechanism is constructed by utilizing the interaction between the plug rod and the mounting concave block. After the glue coating is completed, the tilt of the battery cell due to gravity can intuitively reflect the uniformity of the glue coating. When the battery cell tilts due to uneven glue coating, real-time detection of glue coating uniformity helps to promptly discover and correct problems in the glue coating process, thereby avoiding degradation or damage to the battery cell due to uneven glue coating, and omitting the subsequent detection steps, further shortening the overall assembly time.

[0039] 3. Negative pressure is generated by compressing the airbag, and the battery cell is firmly adsorbed on the petal-shaped block by using the air suction cup, so that the battery cell can be stably fixed during the gluing operation. After the gluing operation is completed, when the battery cell is grabbed by the robot, the pressure plate on the robot presses the compressed airbag to release the pressure, and the external air quickly enters the air suction cup to eliminate the negative pressure. This setting is convenient for quick fixation of the battery cell during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 It is a schematic diagram of the structure of the adhesive component in the present invention;

[0042] Figure 3 is a cross-sectional view of the present invention;

[0043] Figure 4 is a schematic diagram of the connection structure of the second driving component in the present invention;

[0044] Figure 5 is a cross-sectional view of the sliding groove in the present invention;

[0045] Figure 6 For the present invention Figure 2 A magnified view of the structure at center A;

[0046] Figure 7 For the present invention Figure 4 A magnified view of the structure at B in the middle;

[0047] Figure 8 For the present invention Figure 2Enlarged view of the structure at C in the middle.

[0048] In the figure: 1. Glue coating machine base body; 2. Glue dispensing gun; 300. Glue assembly; 301. Mounting shell; 302. Petal block; 303. Sliding opening; 304. Slider body; 3041. First slider; 3042. Second slider; 305. Mounting recess; 400. First driving assembly; 401. Insert block; 402. Insert rod; 403. Telescopic cylinder; 500. Second driving assembly; 501. Transmission plate; 502. Connecting rod; 503. Connecting column; 504. First connecting plate; 505. Servo motor; 600. Fixing assembly; 601. Second connecting plate; 602. Air suction cup; 603. Compressed air bag; 7. Connecting frame. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] See also Figure 1-8 The present invention provides a technical solution: a lithium battery processing and assembly machine includes a glue assembly 300 for assembling battery cells into batteries, a fixing assembly 600 for fixing the battery cells, and a driving mechanism for driving the movement of components in the glue assembly 300, wherein the driving mechanism includes a second driving assembly 500 for driving the components in the glue assembly 300 to move horizontally and a first driving assembly 400 for driving the components in the glue assembly 300 to move vertically;

[0051] The present invention mainly involves the gluing step in battery assembly, so it is necessary to equip a manipulator, a conveyor belt and an automatic gluing device, wherein the automatic gluing device is arranged on the gluing machine base body 1 and used in conjunction with the glue gun 2, and includes mechanical parts such as a stepping motor, a transmission belt, and gears, which work together to drive the glue gun 2 to move accurately forward and backward, left and right, and up and down in a three-dimensional space, but because it is irrelevant to the technical problem to be solved by the present invention, it is not drawn and described in detail;

[0052] The coordinated use of the adhesive component 300 and the drive mechanism facilitates the rapid assembly of the battery cells in a smaller space. It is worth mentioning that after the assembly is completed, the coordinated use of the components in the adhesive component 300 can also automatically detect the uniformity of the glue coating, thereby omitting the steps of subsequent detection and shortening the overall assembly time.

[0053] The structure is further disclosed below, please refer to Figures 1 to 5, including a glue coating machine base body 1, a glue gun 2 and a glue assembly 300 arranged on the glue coating machine base body 1, and the glue assembly 300 includes,

[0054] The mounting shell 301 has a spherical cavity. A plurality of sliding openings 303 are evenly spaced and penetrate the mounting shell 301. The depth of the sliding openings 303 in the spherical cavity gradually increases from the top to the bottom.

[0055] A plurality of slider bodies 304 are slidably connected to corresponding sliding openings 303, and a petal-shaped block 302 is disposed at the upper end of each slider body 304 for mounting a battery cell;

[0056] A plurality of driving mechanisms are respectively connected to the lower ends of the slider bodies 304 to drive the slider bodies 304 to slide along the sliding openings 303 so that the petal blocks 302 gradually gather together and the cells move alternately to complete the gluing operation.

[0057] It should be noted that a connecting frame 7 is connected to the top of the glue coating machine base body 1 to fix the mounting shell 301 .

[0058] In specific implementation, when gluing is required, the battery cells are first installed on each petal block 302, and then the glue gun 2 will perform precise gluing on specific parts of the battery cells according to the preset gluing path and parameters. The driving mechanism is started, and the slider body 304 slides along the sliding opening 303. As the depth of the sliding opening 303 gradually deepens, the slider body 304 will gradually gather toward the center of the spherical cavity during the sliding process. As the slider body 304 gathers, the battery cells on each petal block 302 will gradually move in an interlaced manner to form a compact arrangement. In this process, after the gluing is completed, the assembled battery cells can be taken out with the help of a robot arm, and then the driving mechanism can move in the opposite direction to return the slider body 304 to the initial position along the sliding opening 303 for the next round of gluing. This setting occupies a relatively small area and can assemble multiple battery cells at the same time.

[0059] Please continue to refer to Figure 2 and Figure 8 In the process of placing the battery cell on the petal block 302, in order to prevent the battery cell from falling off, the battery cell needs to be fixed, and a fixing component 600 is designed for this purpose;

[0060] Each petal block 302 is provided with a fixing assembly 600.

[0061] The fixing assembly 600 includes a second connecting plate 601 vertically connected to the top of the petal-shaped block 302, and the left and right second connecting plates 601 are opposite to each other and are staggered front and back;

[0062] Air suction cups 602, a plurality of air suction cups 602 are disposed on a side opposite to each second connecting plate 601;

[0063] The compressed air bag 603 is connected to the top of the second connecting plate 601 and is in communication with the second connecting plate 601 and the air suction cup 602;

[0064] The outer surface of the petal-shaped block 302 is a curved surface, matching the spherical cavity;

[0065] It should be noted that the air suction cups 602 can be arranged in a rectangular array or in an irregular arrangement, and can be distributed according to actual working conditions. As long as the battery cells can be fixed, no excessive restrictions are made here.

[0066] In specific implementation, before the glue coating operation begins, the compressed air bag 603 is compressed to generate negative pressure and transmit it to the air suction cup 602 through the pipeline. The air suction cup 602 absorbs the battery cell on the petal block 302 through the negative pressure to fix the battery cell;

[0067] After the gluing operation is completed, the assembled battery cell can be grabbed by a robot. At this time, a pressure plate can be set on the robot. During the grabbing process of the robot, the pressure plate can press the compressed air bag 603 to release the pressure of the compressed air bag 603. External air enters the air suction cup 602 through the pipeline to eliminate the negative pressure. The battery cell automatically falls off from the petal block 302 due to the loss of negative pressure adsorption. Then the robot grabs the assembled battery cell and enters the subsequent testing steps.

[0068] Among them, please refer to Figures 2 to 4 , the structure of the driving mechanism is disclosed, and the driving mechanism includes:

[0069] The first driving assembly 400, whose driving end is connected to the slider body 304, is used to drive the slider body 304 to move towards or away from the top surface of the glue coating machine base body 1;

[0070] The second driving assembly 500, whose driving end is connected to the first driving assembly 400, is used to drive the first driving assembly 400 to move in a direction close to or away from the central axis of the mounting housing 301;

[0071] In specific implementation, the second driving assembly 500 first drives the first driving assembly 400 and the slider body 304 connected thereto to move to a preset position in the radial direction, and this position determines the relative layout and degree of staggered arrangement between the battery cells;

[0072] At the same time, the first driving assembly 400 synchronously drives the slider body 304 to move in the vertical direction, so that the multiple petal blocks 302 gradually gather together and the battery cells move alternately to complete the gluing operation.

[0073] The structure of the first drive assembly 400 is further disclosed below. Please refer to Figure 6 , the first driving assembly 400 includes a telescopic cylinder 403 arranged above the glue coating machine base body 1;

[0074] Insert block 401, which is rotatably connected in the slider body 304 and connected to the telescopic end of the telescopic cylinder 403;

[0075] During specific implementation, the telescopic cylinder 403 can provide a vertical downward driving force to make the slider body 304 slide along the sliding opening 303, and the insert block 401 ensures that the driving force exerted on the slider body 304 is always perpendicular to the glue coating machine base body 1, thereby ensuring the stability of the petal block 302 during the gathering movement.

[0076] For further disclosure of the mechanism within the second drive assembly 500, please refer to Figure 4 , the second driving assembly 500 includes a transmission plate 501 rotatably arranged above the glue coating machine base body 1;

[0077] Connecting rods 502, the number of the connecting rods 502 is at least four and they are in an "L" shape, one end of the four connecting rods 502 is rotatably connected to the corner positions of the transmission plate 501;

[0078] A connecting column 503, the connecting column 503 is connected to the other end of the connecting rod 502;

[0079] A first connecting plate 504, the first connecting plate 504 is rotatably connected to the connecting column 503, and the top of the first connecting plate 504 is rotatably connected to the telescopic cylinder 403;

[0080] The glue coating machine base body 1 is connected with a fixed disc, a connecting groove is provided on the fixed disc, a first connecting plate 504 is slidably connected to the connecting groove, and a servo motor 505 for driving the transmission plate 501 to rotate is connected to the fixed disc;

[0081] During specific implementation, when it is necessary to adjust the radial position of the first drive assembly 400 and the slider body 304 connected thereto, the servo motor 505 starts working, and the servo motor 505 drives the transmission plate 501 to rotate around its center point through the output shaft. As the transmission plate 501 rotates, the connecting rod 502 swings accordingly. Since the connecting rod 502 is "L"-shaped, its swing will be converted into horizontal movement of the connecting column 503 and the first connecting plate 504. The first connecting plate 504 slides in the radial direction under the guidance of the connecting groove, and then drives the telescopic cylinder 403 to move synchronously.

[0082] When you need to test the uniformity of glue coating after assembly, please continue to refer to Figures 2 to 7A mounting recess 305 is provided at the center of the mounting housing 301, and a plurality of communication ports are provided through the mounting recess 305. The plurality of sliding openings 303 correspond to the plurality of communication ports, and the diameter of the communication ports is larger than the size of the slider body 304;

[0083] The slider body 304 includes,

[0084] The first sliding block 3041 is slidably connected to the sliding opening 303. The first sliding block 3041 is provided with a mounting groove opening upward, and the bottom of the groove has a through hole;

[0085] The second slider 3042 has one end extending from the through hole into the mounting groove, the side wall of the extending portion is rotatably connected to the mounting groove, and a slot is provided at the upper end, and the other end extends downward and is connected to the telescopic cylinder 403;

[0086] The bottom of the petal block 302 is provided with an insertion rod 402 that matches the slot;

[0087] When implementing it, first Figure 6 As can be seen in the figure, the inserted block 401 is located in the second slider 3042. When the first slider 3041 slides along the sliding opening 303, when the second slider 3042 slides to the position of the mounting recess 305, since the connecting port opened on the mounting recess 305 is connected to the sliding opening 303, and the depth of the sliding opening 303 in the spherical cavity gradually deepens from the top to the bottom, the inserted rod 402 will move in the opposite direction to the second slider 3042, that is, the inserted rod 402 will slide into the mounting recess 305 through the connecting port. , and the second slider 3042 will continue to slide to the bottom of the sliding opening 303, and then the multiple insertion rods 402 will jointly form a fulcrum in the installation recess 305. When the glue coating is uneven on the assembled battery cell, under the influence of gravity, the side with more glue coating will drive the multiple petal blocks 302 (because the multiple battery cells have been bonded into a whole, the multiple petal blocks 302 will be limited so that the multiple petal blocks 302 will not be scattered) to tilt. When the tilt is large, it indicates that the glue coating of this battery cell is uneven.

[0088] A lithium battery comprises a positive electrode, a negative electrode, an electrolyte, a separator and a shell.

[0089] A lithium battery assembly method comprises the following steps:

[0090] S1. Use a robot to place the battery cell to be fixed on the petal block 302, and insert the petal block 302 on the slider body 304;

[0091] S2, fix the battery cell using the fixing assembly 600, and after the fixation is completed, apply glue to the battery cell using the glue gun 2;

[0092] S3, start the telescopic cylinder 403 to drive the slider body 304 and the petal block 302 to slide along the sliding opening 303. When sliding to the bottom of the installation shell 301, the petal block 302 forms a hemispherical shape. At this time, the battery cell splicing is completed, and the plug rod 402 and the plug block 401 fall off from each other;

[0093] S4. The detached plug rod 402 is moved into the installation recessed block 305, and gravity is used to detect the uniformity of the glue coating on the battery cell. When the glue coating is uniform, the deviation of the petal-shaped block 302 is small. When the glue coating is uneven, the deviation of the petal-shaped block 302 is large.

[0094] Working principle: When the battery cell needs to be assembled:

[0095] Before the glue coating operation begins, the compressed air bag 603 is compressed to generate negative pressure and transmit it to the air suction cup 602 through the pipeline. The air suction cup 602 absorbs the battery cell on the petal block 302 through the negative pressure to fix the battery cell;

[0096] After the gluing operation is completed, the assembled battery cell can be grabbed by the manipulator. At this time, a pressure plate can be set on the manipulator. During the grabbing process of the manipulator, the pressure plate can press the compressed air bag 603 to release the pressure of the compressed air bag 603, and the external air enters the air suction cup 602 through the pipeline to eliminate the negative pressure. The battery cell automatically falls off from the petal block 302 due to the loss of the adsorption of the negative pressure. Then the manipulator grabs the assembled battery cell and enters the subsequent testing steps;

[0097] The battery cells are first installed on each petal block 302, and then the glue gun 2 will perform precise glue coating operations on specific parts of the battery cells according to the preset glue coating path and parameters, and the driving mechanism is started;

[0098] The telescopic cylinder 403 can provide a vertical downward driving force to make the slider body 304 slide along the sliding opening 303, and the insert block 401 makes the driving force on the slider body 304 always perpendicular to the glue coating machine base body 1, ensuring the stability of the petal block 302 during the gathering movement;

[0099] When the radial position of the first driving assembly 400 and the slider body 304 connected thereto needs to be adjusted, the servo motor 505 starts to work, and the servo motor 505 drives the transmission plate 501 to rotate around its center point through the output shaft. As the transmission plate 501 rotates, the connecting rod 502 swings accordingly. Since the connecting rod 502 is "L"-shaped, its swing is converted into horizontal movement of the connecting column 503 and the first connecting plate 504. The first connecting plate 504 slides in the radial direction under the guidance of the connecting groove, and then drives the telescopic cylinder 403 to move synchronously.

[0100] Affected by the driving mechanism, the slider body 304 slides along the sliding opening 303. As the depth of the sliding opening 303 gradually deepens, the slider body 304 gradually gathers toward the center of the spherical cavity during the sliding process. As the slider body 304 gathers, the cells on each petal block 302 also gradually stagger and form a compact arrangement. In this process, after the gluing is completed, the assembled cells can be taken out with the help of a robot, and then the driving mechanism can move in the reverse direction to return the slider body 304 to the initial position along the sliding opening 303 for the next round of gluing operation.

[0101] The inserted block 401 is arranged in the second slider 3042. When the first slider 3041 slides along the sliding opening 303, when the second slider 3042 slides to the position of the mounting recessed block 305, since the connecting port opened on the mounting recessed block 305 is connected with the sliding opening 303, and the depth of the sliding opening 303 in the spherical cavity gradually deepens from the top to the bottom, the inserted rod 402 will move in the opposite direction to the second slider 3042, that is, the inserted rod 402 will slide into the mounting recessed block 305 through the connecting port, and the first slider 3041 will slide into the mounting recessed block 305. The second slider 3042 will continue to slide to the bottom of the sliding opening 303, and then the multiple insertion rods 402 will jointly form a fulcrum in the installation recess 305. When the glue coating is uneven on the assembled battery cell, under the influence of gravity, the side with more glue coating will cause the multiple petal blocks 302 (because the multiple battery cells have been bonded into a whole, the multiple petal blocks 302 will be limited so that the multiple petal blocks 302 will not be scattered) to tilt. When the tilt is large, it indicates that the glue coating of this battery cell is uneven.

Claims

1. A lithium battery processing and assembly machine, comprising a glue coating machine base body (1), a glue dispensing gun (2) and a glue assembly (300) arranged on the glue coating machine base body (1), characterized in that: The adhesive assembly (300) comprises: The mounting shell (301) has a spherical cavity, and a plurality of sliding openings (303) are evenly spaced and arranged through the mounting shell (301), and the depth of the sliding openings (303) in the spherical cavity gradually increases from the top to the bottom; A plurality of slider bodies (304) are respectively slidably connected to corresponding sliding openings (303); a petal-shaped block (302) is provided at the upper end of each slider body (304) for installing a battery cell; A plurality of driving mechanisms are respectively connected to the lower ends of the slider bodies (304) and are used to drive the slider bodies (304) to slide along the sliding openings (303), so that the plurality of petal blocks (302) gradually gather together and the battery cells move in an alternating manner to complete the gluing operation.

2. A lithium battery processing and assembly machine as claimed in claim 1, characterized in that: Each of the petal-shaped blocks (302) is provided with a fixing assembly (600). The fixing assembly (600) comprises a second connecting plate (601) vertically connected to the top of the petal-shaped block (302), wherein the left and right second connecting plates (601) are opposite to each other and are arranged in a staggered manner in front and back; Air suction cups (602), wherein a plurality of the air suction cups (602) are arranged on a side opposite to each second connecting plate (601); A compressed air bag (603) is connected to the top of the second connecting plate (601) and is in communication with the second connecting plate (601) and the air suction cup (602); The outer surface of the petal-shaped block (302) is an arc surface, matching the spherical cavity.

3. A lithium battery processing and assembly machine as claimed in claim 1, characterized in that: The driving mechanism includes: A first driving assembly (400), a driving end of which is connected to the slider body (304) and is used to drive the slider body (304) to move towards or away from the top surface of the glue coating machine base body (1); The second driving assembly (500) has a driving end connected to the first driving assembly (400) and is used to drive the first driving assembly (400) to move in a direction close to or away from the central axis of the mounting shell (301).

4. A lithium battery processing and assembly machine as claimed in claim 3, characterized in that: The first driving assembly (400) comprises a telescopic cylinder (403) arranged above the glue coating machine base body (1); The insert block (401) is rotatably connected in the slider body (304) and is connected to the telescopic end of the telescopic cylinder (403).

5. A lithium battery processing and assembly machine as claimed in claim 4, characterized in that: The second driving assembly (500) comprises a transmission plate (501) rotatably arranged above the glue coating machine base body (1); Connecting rods (502), the number of the connecting rods (502) is at least four and they are in an "L" shape, one end of the four connecting rods (502) is rotatably connected to the corner positions of the transmission plate (501); A connecting column (503), wherein the connecting column (503) is connected to the other end of the connecting rod (502); A first connecting plate (504), the first connecting plate (504) is rotatably connected to the connecting column (503), and the top of the first connecting plate (504) is rotatably connected to the telescopic cylinder (403); The glue coating machine base body (1) is connected to a fixed disc, a connecting groove is provided on the fixed disc, the first connecting plate (504) is slidably connected to the connecting groove, and the fixed disc is connected to a servo motor (505) for driving the transmission plate (501) to rotate.

6. A lithium battery processing and assembly machine as claimed in claim 4, characterized in that: The center of the installation housing (301) is provided with an installation recess (305), and a plurality of communication ports are provided through the installation recess (305), and the plurality of sliding openings (303) correspond to the plurality of communication ports, and the diameter of the communication ports is larger than the size of the slider body (304); The slider body (304) includes: A first sliding block (3041) is slidably connected to the sliding opening (303), wherein the first sliding block (3041) is provided with a mounting groove opening upward, and a through hole is provided at the bottom of the groove; A second sliding block (3042), one end of which extends from the through hole into the mounting groove, the side wall of the extending portion being rotatably connected to the mounting groove, and the upper end being provided with a slot, and the other end extending downward and connected to the telescopic cylinder (403); The bottom of the petal-shaped block (302) is provided with an insertion rod (402) matching the slot.

7. A lithium battery assembled by the lithium battery processing and assembly machine as described in any one of claims 1 to 6, characterized in that: It includes positive electrode, negative electrode, electrolyte, separator and casing.

8. A lithium battery assembly method, applied to assembling a lithium battery processing and assembly machine as described in any one of claims 1 to 6, characterized in that: The following steps are involved: S1, using a robot to place the battery cell to be fixed on the petal-shaped block (302), and inserting the petal-shaped block (302) on the slider body (304); S2, using a fixing assembly (600) to fix the battery cell, and after the fixation is completed, using a glue gun (2) to apply glue to the battery cell; S3, starting the telescopic cylinder (403) to drive the slider body (304) and the petal-shaped block (302) to slide along the sliding opening (303); when sliding to the bottom of the mounting shell (301), the petal-shaped block (302) forms a hemispherical shape, and the battery cell splicing is completed at this time, and the plug rod (402) and the plug block (401) fall off from each other; S4. The detached plug rod (402) is moved into the installation recess (305), and gravity is used to detect the uniformity of the glue coating of the battery cell. When the glue coating is uniform, the deviation of the petal-shaped block (302) is small, and when the glue coating is uneven, the deviation of the petal-shaped block (302) is large.

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