A device for arranging positive and negative electrodes in the assembly of a lithium battery

Abstract

The present invention relates to the technical field of lithium battery assembly, and specifically discloses a device for arranging positive and negative electrodes in lithium battery assembly; it includes a machine base, a material storage box, a material conveyor, and a lithium battery fixture. The material storage box is fixedly arranged above the machine base. The material conveyor is arranged on the upper surface of the machine base and one end is connected to the discharge channel on the material storage box. The other end of the material conveyor is connected to a vertical material discharge channel, and the lower end of the material discharge channel is connected to a lithium battery positive and negative electrode switching mechanism; this device uses a rotating disk with a special structural design, effectively avoiding the problem that when manually inserting lithium batteries into the fixture for arrangement, the positive and negative electrodes are easily misaligned, and effectively solving the problem that the assembled lithium battery pack cannot be used normally due to the misalignment of the positive and negative electrodes; the entire device has a compact structure, and the rotating disk structure therein is ingeniously designed, effectively solving the problems brought about by the need for the positive and negative electrodes to be arranged alternately in sequence during the existing lithium battery assembly, and the use effect is very excellent.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery assembly, and specifically discloses a device for arranging positive and negative electrodes in lithium battery assembly. Background Art

[0002] During the assembly of lithium batteries, it is necessary to arrange the positive and negative electrodes of individual lithium batteries in sequence, and then connect multiple lithium batteries in series or parallel through electrode plates. Currently, during the arrangement process of lithium batteries, mainly manual labor is used to insert lithium batteries into a special fixture one by one in sequence for arrangement. This not only has low work efficiency, but also it is easy for manual operation to reverse the positive and negative electrodes of the lithium batteries, resulting in the inability of the assembled lithium battery pack to be used normally.

[0003] The invention patent with the application number 2017105178822 discloses a double-connected lithium battery welding device and its method, including a lithium battery feeding mechanism, a conveying channel, an ear feeding mechanism, an ear double-connected welding mechanism, and a sorting mechanism; among them, the lithium battery feeding mechanism includes a first turntable and a second turntable. The first turntable is connected to a positive electrode channel, and the second turntable is connected to a negative electrode channel. One end of the conveying channel is connected to the positive electrode channel and the negative electrode channel. The ear feeding mechanism is arranged on one side of the conveying channel, the ear double-connected welding mechanism is arranged on the other side of the conveying channel, and the sorting mechanism is arranged at the other end of the conveying channel; the double-connected lithium battery welding device disclosed in this invention is actually also a device for arranging the positive and negative electrodes of lithium batteries in sequence. This device uses two turntables, and through the positive and negative electrode channels correspondingly connected on the two turntables, the lithium batteries are sent to the welding place for spot welding. However, this device not only occupies a large area, but also after arranging the positive and negative electrodes of the lithium batteries in sequence, it is still necessary for manual labor to insert the lithium batteries into the fixture and connect the overall lithium battery pack in series and parallel by spot welding. Therefore, in view of the problems of high labor intensity, low assembly efficiency, and easy error in the existing lithium battery assembly arrangement process, where manual labor is required to insert the lithium batteries into the fixture in an alternating positive and negative electrode manner, the present application provides a device for arranging positive and negative electrodes in lithium battery assembly that can effectively solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to design a device for arranging positive and negative electrodes in lithium battery assembly that can solve the above technical problems in view of the problems of high labor intensity, low assembly efficiency, and easy error in the existing lithium battery assembly arrangement process, where manual labor is required to insert the lithium batteries into the fixture in an alternating positive and negative electrode manner.

[0005] The present invention is achieved through the following technical solutions:

[0006] A positive and negative electrode arrangement device for lithium battery assembly, comprising a machine base, a material storage box, a material conveyor, and a lithium battery jig. The material storage box is fixedly arranged above the machine base. The material conveyor is arranged on the upper surface of the machine base and one end thereof is connected to the discharge channel on the material storage box. The other end of the material conveyor is connected to a vertical blanking channel. The lower end of the blanking channel is connected to a lithium battery positive and negative electrode switching mechanism.

[0007] Among them, the lithium battery positive and negative electrode switching mechanism includes a rotary switching box. A disk cavity is opened in the rotary switching box. A rotating disk for realizing a fixed-angle rotation of 90° is arranged in the disk cavity. A radial through hole and two radial blind holes are opened on the rotating disk. The two radial blind holes are arranged symmetrically in mirror image, and the radial blind holes are perpendicular to the radial through hole. Radial vertical channels are opened at the top and bottom of the disk cavity, and a blanking pipe aligned with the radial vertical channel is connected to the lower end of the rotary switching box. The lithium battery jig is arranged directly below the blanking pipe.

[0008] The positive and negative electrode arrangement device for lithium battery assembly disclosed in the present invention uses a material conveyor to receive the lithium batteries discharged from the material storage box, and then sends them to the disk cavity through the blanking channel. The rotating disk in the disk cavity rotates 90° each time. When the radial through hole is in a vertical state, the lithium batteries discharged from the blanking channel directly penetrate through the radial through hole and then are directly discharged by the blanking pipe (reference can be made to the appendix Figure 6 ); when it rotates 90° again, at this time, the upper radial blind hole is used to receive the discharged lithium batteries, and the lower radial blind hole discharges the previously received lithium batteries after rotating 180° (reference can be made to the appendix Figure 7 ), so that the positive and negative electrodes of two adjacent lithium batteries are exactly opposite each time when they are discharged and arranged, and there is no need for operators to manually adjust and arrange the positive and negative electrodes of the lithium batteries.

[0009] As a further setting of the above solution, a rectangular groove is opened on the upper surface of the machine base directly below the lithium battery positive and negative electrode switching mechanism. A longitudinal push plate and a transverse push plate are arranged in the rectangular groove, and the longitudinal push plate and the transverse push plate are arranged vertically offset. A power mechanism for driving the longitudinal push plate and the transverse push plate to move is also arranged on the machine base; the above-mentioned lithium battery jig is pushed by the action of the longitudinal push plate and the transverse push plate, so that the lithium battery jig moves one unit distance longitudinally or transversely each time, so that the dropped lithium batteries can be automatically inserted into the corresponding slots for arrangement.

[0010] As a further setting of the above solution, the power mechanism includes a longitudinal lead screw and a transverse lead screw, and servo motors are connected to the ends of the longitudinal lead screw and the transverse lead screw. Screw sleeves matching the longitudinal lead screw or the transverse lead screw are connected to the longitudinal push plate and the transverse push plate; the above design method of the lead screw, the servo motor and the screw sleeve is only a specific design method of the power mechanism.

[0011] As a further setting of the above solution, a control module and an information processing module are provided in the machine base. The servo motor is electrically connected to the control module. A display screen and a control panel are also provided on the machine base. The arrangement information during the lithium battery assembly is input through the control panel and the display screen, and then the control module automatically generates control instructions for operation.

[0012] As a specific setting of the above solution, the rotating disk is rotatably arranged in the disk cavity, and a stepping motor connected to the rotating disk is provided on the rotation switching box.

[0013] As a specific setting of the above solution, a dialing wheel is provided in the material discharging channel at the lower end of the storage box, and a dialing motor connected to the dialing wheel is provided on the back of the material discharging channel.

[0014] As a specific setting of the above solution, the conveyor is a belt conveyor, and grooves matching the lithium batteries are provided on the outer surface of the conveyor belt. Beneficial effects

[0015] 1) The lithium battery arrangement device disclosed by the present invention adopts a rotating disk with a special structural design. A radial through hole and two radial blind holes are provided on the rotating disk. By rotating the rotating disk by 90° each time, the positive and negative poles of two adjacent discharged lithium batteries are opposite, effectively avoiding the problem that the positive and negative poles are easily misaligned when manually inserting lithium batteries into the jig for arrangement, and effectively solving the problem that the assembled lithium battery pack cannot be used normally due to the misalignment of the positive and negative poles. The entire device structure disclosed by the present invention is compact, and the structural design of the rotating disk is ingenious, effectively solving the problems brought about by the need for the positive and negative poles to be arranged alternately in sequence during the existing lithium battery assembly, and the use effect is very excellent.

[0016] 2) On the basis of the above, in the present invention, a rectangular groove is provided on the upper surface of the machine base, and a longitudinal pushing plate and a transverse pushing plate are provided in the rectangular groove through structures such as a servo motor, a lead screw, and a slide bar. Then, the lithium battery jig is arranged closely against the longitudinal pushing plate and the transverse pushing plate. By inputting the column and row information of the corresponding lithium battery jig, the lithium battery jig can be automatically pushed, thereby automatically completing the arrangement process of the lithium batteries, making the entire device more automated. Description of the drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1Schematic diagram of the three-dimensional structure of the first angle of the present invention;

[0019] Figure 2 Schematic diagram of the three-dimensional structure of the second angle of the present invention;

[0020] Figure 3 For the present invention Figure 2 Enlarged structure schematic diagram of part A in;

[0021] Figure 4 Internal plane structure schematic diagram of the feeder in the present invention;

[0022] Figure 5 Schematic diagram of the three-dimensional half-section structure of the rotating disk in the present invention;

[0023] Figure 6 Internal plane diagram of the first state of the positive and negative electrode switching mechanism of the lithium battery in the present invention;

[0024] Figure 7 Internal plane diagram of the second state of the positive and negative electrode switching mechanism of the lithium battery in the present invention;

[0025] Figure 8 Top view plane structure schematic diagram of the lithium battery fixture positioning and moving mechanism in the present invention. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will refer to the attached Figures 1-8 drawings, and will describe the present application in detail in conjunction with the embodiments. Embodiment 1

[0028] This Embodiment 1 discloses a positive and negative electrode arrangement machine for lithium battery assembly, referring to the attached Figure 1 drawings and the attached Figure 2, the main body of the arrangement machine includes a machine base 100, a material storage box 200, a material conveyor 300, a lithium battery positive and negative electrode switching mechanism 400, and a lithium battery fixture 500. Among them, the machine base 100 is composed of welded stainless steel plates, and several feet 101 are connected to the lower surface of the machine base 100. At the same time, a cabinet door 102 is provided on the front side of the machine base 100. The inside of the cabinet door 102 is provided with relevant control modules and information processing modules, and a display screen 103 and a control panel 104 are provided on the machine base 100 above the cabinet door 102.

[0029] An installation seat 105 is provided on the upper surface of the machine base 100 behind the display screen 103 and the control panel 104. The material storage box 200 is fixedly arranged above the installation seat 105 through a connecting block 201, and the material storage box 200 is arranged at a certain angle to the right to prevent the lithium battery in the material storage box 200 from slipping off from the open end. Refer to the attached Figure 2 and the attached Figure 3 , a discharge channel 202 is connected to the lower end of the material storage box 200 to prevent it. A dialing wheel 203 is rotatably connected to one side of the discharge channel 202, and a first servo motor 204 is provided on the back of the discharge channel 202, and the output shaft of the first servo motor 204 is connected to the dialing wheel 203. The shape of the dialing wheel 203 can be set as a regular hexagon. By rotating the dialing wheel 203, the lithium batteries above the discharge channel 202 can be dialed down one by one in turn, and then discharged from the lower end of the discharge channel 202.

[0030] Refer to the attached Figure 3 and the attached Figure 4 , the material conveyor 300 is fixedly arranged directly below the material storage box 200. The main components of the material conveyor 300 include a conveyor belt machine base 301 that is inclined upward to the right. Belt rollers 302 are provided at both ends of the conveyor belt machine base 301, and a conveyor belt 303 is provided between the two belt rollers 302. The lower end of the conveyor belt 303 is directly below the discharge channel 202 for receiving the discharged lithium battery. At the same time, in order to prevent the lithium battery from swinging when being conveyed by the conveyor belt 303, grooves 3031 matching the lithium battery are also opened on the outer surface of the conveyor belt 303, and anti-slip lines are provided on the surface of the grooves to prevent the lithium battery from sliding to the lower left end. A vertical blanking channel 304 is connected to the upper right end of the conveyor belt machine base 301. The blanking channel 304 can be used to receive the lithium battery that falls from the end of the conveyor belt 303, and then fall downward along the blanking channel 304.

[0031] Refer to the attached Figure 1 , the attached Figure 5 , the attached Figure 6 and the attached Figure 7, the positive and negative electrode switching mechanism 400 of the lithium battery includes a rotary switching box 401 connected to the blanking channel 304. A disc cavity 402 is opened in the middle of the rotary switching box 401. A rotating disc 403 is rotatably connected in the disc cavity 402. At the same time, a stepping motor 404 is arranged on the rotary switching box 401, and the stepping motor 404 is connected to the center of the rotating disc 403. By controlling the pulse signal of the stepping motor 404, the rotating disc 403 rotates precisely 90° each time. A radial through hole 4031 is opened on the circumferential surface of the rotating disc 403. At the same time, two radial blind holes 4032 are symmetrically arranged on the circumferential surface of the rotating disc 403 in a mirror image, and the two radial blind holes 4032 are perpendicular to the radial through hole 4031. Radial vertical channels 406 capable of passing through the lithium battery are opened at the top and bottom of the disc cavity 402. Finally, a blanking pipe 405 aligned with the radial vertical channel 406 is connected to the bottom of the rotary switching box 401. When the positive and negative electrode switching mechanism of this lithium battery switches the positive and negative electrodes of the lithium battery, by rotating 90° each time through the stepping motor 404, the two radial blind holes 4032 and the radial through hole 4031 are reciprocally switched, so that the positive and negative electrodes of the lithium battery can fall in the opposite direction.

[0032] Finally, refer to the attached Figure 1 , in this embodiment, the lithium battery fixture 500 is arranged directly below the blanking pipe 405. After the lithium battery discharged from the blanking pipe 405 is inserted into the corresponding positioning slot, the operator pushes the lithium battery fixture 500 to move the adjacent positioning slots on the lithium battery fixture 500 directly below the blanking pipe 405 for receiving the insertion of the next lithium battery. Embodiment 2

[0033] Embodiment 2 discloses a positive and negative electrode arrangement machine for lithium battery assembly that can automatically position and move the lithium battery fixture 500 based on Embodiment 1. The same parts as those in Embodiment 1 will not be described again. The differences can be referred to the attached Figure 1 and the attached Figure 8 .

[0034] In this Embodiment 2, a rectangular groove 106 is also opened on the upper surface of the machine base 100 directly below the positive and negative electrode switching mechanism 400 of the lithium battery. A longitudinal lead screw 501 and a longitudinal slide bar 502 are respectively arranged at the left and right ends of the rectangular groove 106. One end of the longitudinal lead screw 501 is connected to a second servo motor 503. A longitudinal push plate 504 is arranged between the longitudinal lead screw 501 and the longitudinal slide bar 502. One end of the longitudinal push plate 504 is connected to a screw sleeve 505 matching the longitudinal lead screw 501, and the other end is provided with a slide hole matching the longitudinal slide bar.

[0035] A transverse lead screw 506 and a transverse slide bar 507 are respectively arranged at the front and rear ends of the rectangular groove 106. The end of the transverse lead screw 506 is connected with a third servo motor 508. A transverse push plate 509 is arranged between the transverse lead screw 506 and the transverse slide bar 507. One end of the transverse push plate 509 is also provided with a screw sleeve 505 matching the transverse lead screw 506, and the other end is provided with a slide hole matching the transverse slide bar 507. Then, both sides of the lithium battery fixture 500 are placed closely against the longitudinal push plate 504 and the transverse push plate 509 in the rectangular groove 106. Among them, the longitudinal lead screw 501, the longitudinal slide bar 502, the longitudinal push plate 504 and the transverse lead screw 506, the transverse slide bar 507, the transverse push plate 509 are respectively in different horizontal positions, so that the longitudinal push plate 504 and the transverse push plate 509 do not affect each other during movement.

[0036] Meanwhile, the second servo motor 503 and the third servo motor 508 are electrically connected to the control module. When it is necessary to arrange lithium batteries in different lithium battery fixtures 500, the number of rows, the number of columns, the row spacing and the column spacing when the lithium batteries are arranged in a rectangular array in the lithium battery fixture 500 are input through the control panel 104. Then, the information processing module processes the input assembly information, and automatically generates relevant control instructions through the control module to realize the rotation control of the second servo motor 503 and the third servo motor 508. The information conversion process and the control process are prior arts and will not be described in detail here.

[0037] During the process of arranging and inserting the positive and negative electrodes of the lithium battery into the lithium battery fixture 500, the intersection point of the longitudinal push plate 504 and the transverse push plate 509 in the initial state is the coordinate origin 0, and the slot at the most corner end of the lithium battery fixture 500 is arranged directly below it. Then, every time the feeding pipe 405 feeds materials once, the second servo motor 503 or the third servo motor 508 will drive the corresponding lead screw to rotate, so as to push the lithium battery fixture 500 forward by one unit. Until the lithium battery fixture 500 is fully filled with lithium batteries, the second servo motor 503 and the third servo motor 508 will control the longitudinal push plate 504 and the transverse push plate 509 to reset to the coordinate origin 0 for arranging and inserting the positive and negative electrodes of the lithium battery in the next lithium battery fixture 500.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for arranging the positive and negative electrodes in the assembly of a lithium battery, comprising a machine base, a storage box, a feeding machine, and a lithium battery fixture. It is characterized in that the storage box is fixedly arranged above the machine base, the feeding machine is arranged on the upper surface of the machine base and one end thereof is connected to the discharging channel on the storage box, the other end of the feeding machine is connected with a vertical feeding channel, and the lower end of the feeding channel is connected with a positive and negative electrode switching mechanism for the lithium battery; wherein, the positive and negative electrode switching mechanism for the lithium battery comprises a rotary switching box, a disc cavity is formed in the rotary switching box, a rotating disc for realizing a fixed-angle rotation of 90° is arranged in the disc cavity, a radial through hole and two radial blind holes are formed in the rotating disc, the two radial blind holes are arranged symmetrically in a mirror image, and the radial blind holes are perpendicular to each other with the radial through hole, radial vertical channels are formed at the top end and the bottom end of the disc cavity, and a feeding pipe aligned with the radial vertical channel is connected to the lower end of the rotary switching box, and the lithium battery fixture is arranged directly below the feeding pipe.

2. The device for arranging the positive and negative electrodes in the assembly of a lithium battery according to claim 1, It is characterized in that a rectangular groove is formed on the upper surface of the machine base directly below the positive and negative electrode switching mechanism for the lithium battery, a longitudinal pushing plate and a transverse pushing plate are arranged in the rectangular groove, and the longitudinal pushing plate and the transverse pushing plate are arranged vertically and horizontally in a staggered manner, and a power mechanism for driving the longitudinal pushing plate and the transverse pushing plate to move is further arranged on the machine base.

3. The device for arranging the positive and negative electrodes in the assembly of a lithium battery according to claim 2, It is characterized in that the power mechanism comprises a longitudinal lead screw and a transverse lead screw, and servo motors are connected to the ends of the longitudinal lead screw and the transverse lead screw, and screw sleeves matched with the longitudinal lead screw or the transverse lead screw are connected to the longitudinal pushing plate and the transverse pushing plate.

4. The device for arranging the positive and negative electrodes in the assembly of a lithium battery according to claim 3, It is characterized in that a control module and an information processing module are arranged in the machine base, the servo motor is electrically connected to the control module, and a display screen and a control panel are further arranged on the machine base.

5. The device for arranging the positive and negative electrodes in the assembly of a lithium battery according to claim 1, It is characterized in that the rotating disc is rotatably arranged in the disc cavity, and a stepping motor connected to the rotating disc is arranged on the rotary switching box.

6. The device for arranging the positive and negative electrodes in the assembly of a lithium battery according to claim 1, It is characterized in that a material shifting wheel is arranged in the feeding channel at the lower end of the storage box, and a material shifting motor connected to the material shifting wheel is arranged on the back surface of the feeding channel.

7. The device for arranging the positive and negative electrodes in the assembly of a lithium battery according to claim 1, It is characterized in that the feeding machine is a belt conveyor, and grooves matched with the lithium battery are formed on the outer surface of the conveyor belt.

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