A button battery assembly device

Abstract

The present invention discloses a button battery assembly device, including a feeding device, an electrolyte adding device and a sealing and pressing device, wherein the feeding device includes: a rotating motor driven by a corresponding first driving mechanism; a material tray taking mechanism including an electromagnet connected to the rotating motor by transmission, and a magnetic metal part fixed to the material tray; a button battery material taking mechanism including a plurality of suction nozzle mounting assemblies, and suction nozzles mounted on the suction nozzle mounting assemblies; the sealing and pressing device includes: a sealing and pressing bottom mold assembly; a sealing and pressing upper mold assembly; a blowing mechanism; the electrolyte adding device includes: an electrolyte liquid transfer gun, and the electrolyte liquid transfer gun is driven by a corresponding fourth driving mechanism. The present invention can fully automatically stack the raw materials for preparing button batteries in sequence, add electrolyte, and then seal and press the stacked raw materials for preparing button batteries after the electrolyte is added.

Description

Technical Field

[0001] The present invention relates to a button battery assembly device, which can automatically stack the raw materials for preparing button batteries in sequence, add electrolyte, and then seal and assemble the stacked raw materials for preparing button batteries after adding electrolyte. Background Art

[0002] During the assembly process of button batteries, it is necessary to individually load the materials for making button batteries onto the corresponding assembly stations for pressing and assembling into a whole. The materials for making button batteries include positive electrode cases, positive electrode plates, separators, negative electrode plates, gaskets, shrapnel, negative electrode cases, etc., and the quantity is large.

[0003] The traditional feeding method for the materials for making button batteries is manual feeding, and its feeding efficiency is low, which simply cannot meet the feeding requirements of automatic button battery assembly equipment. For this reason, a feeding device for a button battery assembly equipment that feeds by a manipulator has begun to be put into use. The existing feeding device for a button battery assembly equipment that feeds by a manipulator has problems of insufficient adaptability in actual use. The reason is that most of the materials for making button batteries are embedded in the corresponding trays. Therefore, it is necessary to grab and adsorb the materials embedded in the trays one by one by the manipulator, and then transfer them to the corresponding assembly stations. However, after each tray of materials is grabbed, it is still necessary to manually install the tray embedded with the materials for making button batteries in place, which results in a significant impact on the feeding efficiency. For an automatic button battery assembly equipment, this is undoubtedly unacceptable.

[0004] The materials for making button batteries are accurately stacked and fed onto the corresponding die bases by a manipulator. During this process, the electrolyte is added to the stacked materials for making button batteries as needed by an electrolyte adding device, and then the stacked materials for making button batteries are fixedly sealed and formed by a corresponding sealing and pressing mechanism. Since there are many components in the materials for making button batteries, problems such as position deviation are likely to occur during the sealing and pressing process; moreover, the materials for making button batteries added with electrolyte are also likely to have electrolyte overflow and adhere to the sealing and pressing mechanism during the actual sealing and pressing process, resulting in an impact on the subsequent sealing and pressing process, which is very troublesome.

[0005] Therefore, the purpose of the present invention is to design an automated button battery assembly device that can quickly absorb and move materials embedded in a material tray to a corresponding assembly station, and can conveniently replace the material tray embedded with materials for button battery production, thereby significantly improving the adaptability and efficiency of loading; and can effectively and precisely fix the stacked materials for button battery production and then seal them to ensure the sealing accuracy; and can effectively remove the electrolyte adhered to the seal, thereby effectively preventing the impact caused by electrolyte overflow. Summary of the invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a button battery assembly device, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is:

[0008] A button battery assembly device includes a feeding device, an electrolyte adding device and a sealing device.

[0009] The feeding device comprises:

[0010] A rotating motor is driven by a corresponding first driving mechanism, wherein the output shaft end of the rotating motor is arranged downward;

[0011] The material tray taking mechanism comprises an electromagnet which is connected to the lower side of the output shaft end of the rotating motor through a corresponding connecting piece, and a magnetic metal piece fixedly connected to the corresponding material tray, and the material trays are respectively embedded with materials for making button batteries;

[0012] The button battery material taking mechanism comprises a plurality of suction nozzle mounting assemblies fixedly connected to the outer bottom of the connecting member, wherein the suction nozzle mounting assemblies are respectively downwardly mounted with suction nozzles for adsorbing and fixing the button battery manufacturing materials on the material tray;

[0013] The sealing device comprises:

[0014] The sealing and pressing bottom die assembly comprises a bottom die seat movably mounted on the corresponding sealing and pressing workbench, and the bottom die seat is driven by the corresponding second driving mechanism;

[0015] The sealing upper die assembly comprises a connecting block which is escalably arranged on the upper side of the sealing workbench, the connecting block is driven by a corresponding third driving mechanism, a corresponding upper die pressing block is fixedly installed on the bottom side of the connecting block, a corresponding upper die top block is movably installed through the middle of the upper die pressing block, the top of the upper die top block is connected to the connecting block through a first elastic member, and the bottom of the upper die top block extends to the lower side of the bottom end of the upper die pressing block;

[0016] The air blowing mechanism includes an air guiding cavity provided on the connecting block. An air inlet hole communicating with the air guiding cavity is provided on the connecting block, and a plurality of air blowing holes communicating with the air guiding cavity are uniformly arranged on the upper die top block.

[0017] The electrolyte adding device includes:

[0018] An electrolyte pipette, which is driven by a corresponding fourth driving mechanism, and the electrolyte is quantitatively added between the materials for manufacturing button batteries during the stacking process through the electrolyte pipette.

[0019] The feeding device further includes a feeding workbench, on which a corresponding material positioning platform is movably installed. The material positioning platform is driven by a driving cylinder fixedly installed on the feeding workbench, and a corresponding stacking workbench is fixedly installed outside the feeding workbench.

[0020] The nozzle mounting assembly includes a fixing plate member fixed to the outside of the connecting member. A corresponding L-shaped plate is vertically movably installed on the fixing plate member, and the nozzles are respectively fixedly installed on the bottom sides of the corresponding L-shaped plates. Corresponding sliding grooves are respectively provided on the fixing plate member, and the L-shaped plates are respectively movably clamped into the sliding grooves. A corresponding locking hole is provided at the bottom of the L-shaped plate, and a corresponding locking convex edge is provided in a circle in the middle of the locking hole. The L-shaped plate is locked and installed on the fixing plate member by a corresponding locking bolt passing through the locking hole, and a top spring sleeved on the rod end of the locking bolt is installed by extrusion between the locking convex edge and the bottom of the fixing plate member.

[0021] The nozzles are respectively fixedly connected to the bottom sides of the L-shaped plates through corresponding L-shaped connecting blocks. There are four nozzle mounting assemblies. A fixedly installed plate arranged in a cross shape is fixedly installed on the connecting member. Corresponding installation grooves are respectively recessed in four directions of the fixedly installed plate. The fixing plate members of the nozzle mounting assemblies are respectively fixedly clamped into the corresponding installation grooves. Corresponding guide blocks are respectively fixedly connected to the inner sides of the fixing plate members. Corresponding card slots are respectively provided on one side of the guide blocks where they are not installed on the fixing plate members, and the card slots and the bottom parts of the installation grooves on the fixedly installed plate are respectively arranged at intervals.

[0022] The output end of the third driving mechanism is arranged downward and is fixedly connected with a corresponding threaded pipe downward. The upper part of the connecting block is fixedly connected to the threaded pipe by a threaded connection method, and the upper part of the first elastic member is fixedly sleeved in the threaded pipe.

[0023] A corresponding fixing hole is recessed downward at the top of the bottom mold seat, and a corresponding base elastic ring is movably installed upward in the fixing hole through a corresponding second elastic member, and the base elastic ring extends to the upper side of the top of the bottom mold seat; a corresponding bottom mold fixing block is installed at the fixing hole of the bottom mold seat, and the bottom of the bottom mold fixing block is closed and plugged into the bottom of the fixing hole, and the top of the bottom mold fixing block is spaced apart from the fixing hole, and the top of the bottom mold fixing block extends to the upper side of the fixing hole of the bottom mold seat, and the base elastic ring and the second elastic member are fixedly sleeved between the bottom mold fixing block and the fixing hole according to height.

[0024] The electrolyte adding device also includes a material fixing mechanism, which includes a fixed bracket arranged on the bottom side of the fourth driving mechanism, a fixed clamp for fixing an electrolyte container bottle filled with electrolyte is fixedly installed in the middle of the fixed bracket, a pipette tip fixing box is fixedly installed on the left side of the fixed bracket, a pipette tip recovery box is fixedly installed on the right side of the fixed bracket, and a corresponding rotating clamp is fixedly installed on the left side of the electrolyte pipette.

[0025] A corresponding mounting part is fixedly installed on the right side of the electrolyte pipette gun, and a material receiving part located on the bottom side of the end of the electrolyte pipette gun can be swingably installed on the mounting part. The material receiving part is provided with a liquid collecting chamber corresponding to the end of the electrolyte pipette gun, and the material receiving part is swing-driven by a corresponding swing driving mechanism; the swing driving mechanism includes a group of swing rods hinged on the mounting part, and the ends of the swing rods that are not hinged to the mounting part are respectively hinged to the material receiving part, and one of the swing rods is transmission-connected to the output shaft end of the driving motor installed on the mounting part.

[0026] The fixed bracket is provided with corresponding gear convex edges at positions corresponding to the gun tip fixing box and the gun tip recovery box, and the gun tip fixing box and the gun tip recovery box are respectively fixedly embedded in the inner sides of the corresponding gear convex edges; the fixed bracket is provided with a clamping claw for clamping and fixing the gun tip fixing box; the first driving mechanism adopts a manipulator, the second driving mechanism and the third driving mechanism adopt a screw driving mechanism, and the fourth driving mechanism adopts a three-axis motion mechanism.

[0027] The button battery assembly equipment also includes an open circuit voltage detector for detecting the open circuit voltage of the button battery after assembly. The materials used to make the button battery include a positive electrode shell, a pole piece, a diaphragm, a lithium sheet, a gasket, a spring, and a negative electrode shell;

[0028] The control method of the button battery assembly equipment comprises:

[0029] Define the encapsulation pressure value, mean, and variance of the encapsulation device as: x1, μ1, σ1; the encapsulation pressing holding time value, mean, and variance as: x2, μ2, σ2; the positive electrode case thickness value, mean, and variance as: x3, μ3, σ3; the positive electrode sheet diameter value, mean, and variance as: x4, μ4, σ4; the negative electrode case thickness value, mean, and variance as: x5, μ5, σ5; the negative electrode sheet diameter value, mean, and variance as: x6, μ6, σ6; the electrolyte addition amount value, mean, and variance as: x7, μ7, σ7; the gasket thickness value, mean, and variance as: x8, μ8, σ8; the shrapnel thickness value, mean, and variance as: x9, μ9, σ9;

[0030] According to the following formula, calculate the encapsulation multivariate Gaussian probability distribution of the encapsulation device:

[0031] ;

[0032] Through the multivariate Gaussian probability distribution, based on the acquisition function in Bayesian optimization, select at least 10 points that are predicted to produce the optimal results as the test assembly parameters. After encapsulating the products composed of each group of test assembly parameters, use the open-circuit voltage detector to detect the open-circuit voltage of the products composed of each group of test assembly parameters, and select the test assembly parameters with the highest open-circuit voltage value as the assembly parameters of the products.

[0033] Advantages of the present invention:

[0034] 1) In the present invention, the electromagnet of the feeding device cooperates with the magnetic metal parts fixed on the tray to adsorb and move the tray embedded with the materials for making button batteries to the material positioning platform, and then the nozzle is used to adsorb and move the materials for making button batteries embedded on the tray and stack them on the bottom die seat of the encapsulation device; the electrolyte is quantitatively added between the materials for making button batteries during the stacking process through the electrolyte pipette gun, and then the upper die assembly of the encapsulation device descends to cooperate with the bottom die seat to encapsulate the stacked materials for making button batteries with added electrolyte. Thus, the rapid encapsulation and assembly of button batteries are fully automated.

[0035] 2) Due to the intervention of the connecting piece, the feeding device of the present invention can not only install the electromagnet of the tray material taking mechanism but also install the button battery material taking mechanism. During the feeding process, only by the cooperation of the electromagnet of the tray material taking mechanism arranged on the rotating motor and the magnetic metal parts fixed on the corresponding tray, the tray located on the stacking workbench can be adsorbed and moved to the material positioning platform; then the nozzle is used to adsorb and move the materials for making button batteries embedded on the tray to the bottom die seat of the encapsulation device, thus significantly improving the feeding adaptability and feeding efficiency of the present invention to meet the realization of the full automation process of feeding during the assembly process.

[0036] 3) During the sealing and pressing process of the product by the sealing and pressing device of the present invention, first, the connecting block moves downward to drive the upper die top block to pre-press and fix the materials for making button batteries under the elastic force of the first elastic member; then, the connecting block continues to move downward to drive the upper die pressing block to press against the top of the positioned materials for making button batteries. During this process, the bottom of the upper die top block retracts inward until it is flush with the bottom of the upper die pressing block, so as to effectively and accurately perform the sealing and pressing operation on the materials for button batteries.

[0037] The sealing and pressing device is also additionally provided with a blowing mechanism. During the downward movement of the connecting block, external compressed gas enters the air guide cavity through the air inlet hole of the blowing mechanism and blows out along the air blowing holes of the upper die top block to blow off the electrolyte attached to the sealing and pressing upper die assembly, so as to effectively remove the electrolyte adhered to the sealing and pressing upper die assembly, effectively prevent the influence caused by the overflow of the electrolyte, and further ensure the continuous and effective progress of the sealing and pressing process.

[0038] 4) The present invention improves the design of the fixing plate member and the L-shaped plate of the nozzle mounting assembly to ensure the sliding accuracy between the fixing plate member and the L-shaped plate; then, through the intervention of components such as the locking hole, the locking convex edge, and the top spring, the position-adjustable installation of the L-shaped plate is realized, so as to effectively realize the position-adjustable installation of the L-shaped plate on the premise of high-precision position adjustment, ensure the high-precision adjustment of the installation positions of the nozzles of different button battery material picking mechanisms, ensure the adsorption stability of the materials, and further meet the realization of the full automation process of feeding in the assembly process.

[0039] 5) The nozzles of the present invention are respectively fixedly connected to the bottom side of the L-shaped plate through corresponding L-shaped connecting blocks, and the fixing plate member of the nozzle mounting assembly is fixedly installed through the mounting grooves provided on the fixedly installed plate arranged in a cross shape; finally, corresponding guide blocks are respectively fixedly connected to the inner sides of the fixing plate members, and the card slots on the guide blocks are arranged at intervals with the bottom of the mounting grooves. Furthermore, the connecting air pipes of the nozzles can directly extend out along the intervals between the card slots and the mounting grooves. Through the coordinated action of the card slots on the guide blocks and the mounting grooves on the fixedly installed plate, the ends of the connecting air pipes of the nozzles are fixed, so as to effectively ensure the connection airtightness of the nozzles in a continuously moving state.

[0040] 6) The output end of the third driving mechanism of the present invention is arranged downward and is fixedly connected with a corresponding threaded pipe downward. The upper part of the connecting block is fixedly connected to the threaded pipe by a threaded connection method, so that the upper part of the first elastic member can be fixedly sleeved in the threaded pipe. To ensure that the upper die top block has sufficient pre-pressure, the first elastic member needs to have a long compression stroke. Through the intervention of the threaded pipe, the convenient installation of the connecting block can be realized, and the installation of the first elastic member with a long stroke can be completed under the premise of a compact structure.

[0041] 7) A corresponding fixing hole is recessed downward at the top of the bottom die base of the present invention. A corresponding base spring ring is movably installed upward in the fixing hole through a corresponding second elastic member. The base spring ring extends to the upper side of the top of the bottom die base. During the sealing and pressing process, the base spring ring effectively forms elastic buffer installation for the materials used in the production of button batteries under the action of the second elastic member, so as to cooperate with the upper die top block to improve the preloading and fixing effect on the materials used in the production of button batteries. And a bottom die fixing block is fixedly installed at the fixing hole of the bottom die base of the present invention. With the intervention of the bottom die fixing block, the convenient disassembly and assembly of the base spring ring and the second elastic member are realized. When it is necessary to clean the electrolyte accumulated on the bottom die base, the base spring ring can be removed, and then the bottom die fixing block sleeved with the second elastic member can be removed, which is very convenient.

[0042] 8) During the process of adding electrolyte by the electrolyte adding device of the present invention, first, the rotating claw is used to unscrew the bottle cap of the electrolyte container bottle and fix the bottle cap on the rotating claw; then, the electrolyte pipetting gun moves leftward and downward to fixedly insert the pipetting gun head fixed on the gun head fixing box body into the end of the electrolyte pipetting gun, and then the electrolyte pipetting gun rises and moves rightward; after the electrolyte pipetting gun moves to the position where the electrolyte container bottle is located, the electrolyte pipetting gun moves downward and starts pumping; after the electrolyte pumping is completed, the electrolyte pipetting gun rises and moves outward to the working station of the bottom die base to add electrolyte; after a single electrolyte transfer and addition is completed, the electrolyte pipetting gun moves rightward to the upper side of the gun head recycling box, and then blows off the pipetting gun head from the end of the electrolyte pipetting gun, so that the pipetting gun head is recycled into the gun head recycling box; after several electrolyte transfer and addition actions are performed in a cycle, the bottle cap is screwed back onto the electrolyte container bottle again by the rotating claw, and then the empty electrolyte container bottle is taken out by the feeding device, and a new electrolyte container bottle filled with electrolyte is loaded and clamped in place again. Thereby, the automation degree and the connection smoothness of each process such as electrolyte acquisition, transfer and addition, and pipetting gun head replacement can be effectively improved, and then the full automation process of electrolyte addition in the assembly process can be satisfied.

[0043] 9) A corresponding mounting member is fixedly installed on the right side of the electrolyte pipetting gun of the present invention. A receiving member located at the bottom side of the end of the electrolyte pipetting gun is swingably installed on the mounting member. A liquid collecting cavity corresponding to the end of the electrolyte pipetting gun is provided on the receiving member, and the receiving member is swingably driven by a corresponding swing driving mechanism. When the swing driving mechanism drives the receiving member to swing upward, there is no obstruction at the bottom side of the end of the electrolyte pipetting gun, and at this time, the normal electrolyte feeding and discharging actions can be carried out; during the transfer process of the electrolyte, the swing driving mechanism drives the receiving member to swing downward to collect the electrolyte dripping along the end of the electrolyte pipetting gun through the liquid collecting cavity provided on the receiving member, thereby effectively preventing the pollution of the button battery assembly equipment.

[0044] 10) First, the present invention obtains the encapsulation multivariate Gaussian probability distribution of various parameters such as the encapsulation pressure value, and obtains at least 10 points of the optimal result based on the acquisition function in Bayesian optimization as the test assembly parameters. Then, an open-circuit voltage detector is used to detect the open-circuit voltage of the products composed of each group of test assembly parameters, and the test assembly parameters with the highest open-circuit voltage value are selected as the assembly parameters of the product, thereby effectively ensuring that the assembled product has high performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic structural diagram of the present invention.

[0046] Figure 2 It is a schematic structural diagram of the feeding device.

[0047] Figure 3 It is an assembly schematic diagram of the tray material taking mechanism and the button battery material taking mechanism.

[0048] Figure 4 is Figure 3 exploded view of parts of.

[0049] Figure 5 It is a sectional view of the button battery material taking mechanism.

[0050] Figure 6 It is a schematic structural diagram of the material positioning platform.

[0051] Figure 7 It is a schematic structural diagram of the sealing and pressing device.

[0052] Figure 8 It is a sectional view of the sealing and pressing device.

[0053] Figure 9 It is a sectional view of the upper die assembly of the sealing and pressing.

[0054] Figure 10 It is a sectional view of the bottom die assembly of the sealing and pressing.

[0055] Figure 11 It is a schematic structural diagram of the electrolyte adding device.

[0056] Figure 12 It is a schematic structural diagram of the other side of the electrolyte adding device.

[0057] Figure 13 It is a schematic structural diagram of the material fixing mechanism.

[0058] In the accompanying drawings: a rotating motor 1, a first driving mechanism 2, a material tray taking mechanism 3, an electromagnet 301, a magnetic metal part 302, a connecting part 4, a material tray 5, a material for making button batteries 6, a button battery material taking mechanism 7, a suction nozzle installation assembly 701, a fixing plate 7011, an L-shaped plate 7012, a suction nozzle 702, a sealing bottom mold assembly 8, a bottom mold seat 801, a second driving mechanism 802, a sealing upper mold assembly 9, a connecting block 901, a third driving mechanism 902, an upper mold pressing block 903, an upper mold top block 904, a first elastic part 905, an air blowing mechanism 10, an air guide cavity 1001, an air inlet hole 1002, an air blowing hole 1003, an electrolyte pipette gun 11, a fourth driving mechanism 12, and a material positioning platform 1 301, driving cylinder 14, stacking workbench 15, locking hole 16, locking convex edge 17, locking bolt 18, tightening spring 19, L-shaped connecting block 20, fixed mounting plate 21, guide block 22, slot 23, threaded tube 24, second elastic member 25, base spring ring 26, bottom mold fixing block 27, material fixing mechanism 28, fixed bracket 2801, fixed clamping jaw 2802, gun head fixing box 2803, gun head recovery box 2804, electrolyte container bottle 29, pipetting gun head 30, rotating clamping jaw 31, mounting part 32, material receiving part 33, liquid collecting chamber 34, swing driving mechanism 35, swing rod 3501, driving motor 3502, gear convex edge 36, clamping clamping jaw 37, open circuit voltage detector. DETAILED DESCRIPTION

[0059] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0060] Embodiment 1

[0061] refer to Figure 1-13 , a button battery assembly device, including a feeding device, an electrolyte adding device and a sealing device,

[0062] The feeding device comprises:

[0063] A rotating motor 1 is driven by a corresponding first driving mechanism 2, wherein the output shaft end of the rotating motor 1 is arranged downward;

[0064] The material tray taking mechanism 3 comprises an electromagnet 301 which is connected to the lower side of the output shaft end of the rotating motor 1 through a corresponding connecting piece 4, and a magnetic metal piece 302 which is fixed to the corresponding material tray 5, and the material tray 5 is respectively embedded with button battery manufacturing materials 6;

[0065] The button battery material taking mechanism 7 comprises a plurality of suction nozzle mounting assemblies 701 fixedly connected to the outer bottom of the connecting member 4, and the suction nozzle mounting assemblies 701 are respectively downwardly mounted with suction nozzles for adsorbing and fixing the button battery manufacturing material 6 on the material tray;

[0066] The sealing and pressing device includes:

[0067] A sealing and pressing bottom die assembly 8, including a bottom die base 801 movably installed on a corresponding sealing and pressing workbench, and the bottom die base 801 is driven by a corresponding second driving mechanism 802;

[0068] A sealing and pressing upper die assembly 9, including an adapter block 901 arranged to be liftable on the upper side of the sealing and pressing workbench, and the adapter block 901 is driven by a corresponding third driving mechanism 902. A corresponding upper die pressing block 903 is fixedly installed on the bottom side of the adapter block 901. A corresponding upper die ejector block 904 is movably installed through the middle of the upper die pressing block 903. The top of the upper die ejector block 904 is connected to the adapter block 901 through a first elastic member 905, and the bottom of the upper die ejector block 904 extends to the lower side of the bottom end of the upper die pressing block 903;

[0069] A blowing mechanism 10, including an air guide cavity 1001 arranged on the adapter block 901, an air inlet hole 1002 communicating with the air guide cavity 1001 is arranged on the adapter block 901, and a plurality of air blowing holes 1003 communicating with the air guide cavity 1001 are uniformly arranged on the upper die ejector block 904;

[0070] The electrolyte adding device includes:

[0071] An electrolyte pipette 11, and the electrolyte pipette 11 is driven by a corresponding fourth driving mechanism 12, and the electrolyte is quantitatively added between the materials 6 for manufacturing button batteries during the stacking process through the electrolyte pipette 11.

[0072] In the present invention, the electromagnet 301 of the feeding device cooperates with the magnetic metal part 302 fixed on the tray 5 to adsorb and move the tray 5 embedded with the materials 6 for manufacturing button batteries to the material positioning platform 1301, and then the materials 6 for manufacturing button batteries embedded on the tray 5 are adsorbed and moved and stacked on the bottom die base 801 of the sealing and pressing device through a suction nozzle; the electrolyte is quantitatively added between the materials 6 for manufacturing button batteries during the stacking process through the electrolyte pipette 11, and then the sealing and pressing upper die assembly 9 descends to cooperate with the bottom die base 801 to seal and press the materials 6 for manufacturing button batteries that are stacked and added with electrolyte. Thus, the rapid sealing and assembly of button batteries are fully automated.

[0073] Through the intervention of the connecting member 4, the loading device of the present invention can not only install the electromagnet 301 of the tray material taking mechanism 3, but also install the button battery material taking mechanism 7. During the loading process, only by matching the electromagnet 301 of the tray material taking mechanism 3 provided on the rotating motor 1 with the magnetic metal part 302 fixed on the corresponding tray 5, the tray 5 located on the stacking workbench 15 can be adsorbed and moved to the material positioning platform 1301; then, the suction nozzle 702 is used to adsorb and move the material 6 for making button batteries embedded on the tray 5 to the bottom die seat 801 of the sealing and pressing device, thus significantly improving the loading adaptability and loading efficiency of the present invention to meet the realization of the fully automated loading process during the assembly process.

[0074] During the sealing and pressing process of the product by the sealing and pressing device of the present invention, first, the connecting block 901 descends to drive the upper die top block 904 to form a pre-pressing and fixing on the material 6 for making button batteries under the elastic force of the first elastic member 905; then, the connecting block 901 continues to descend to drive the upper die pressing block 903 to press against the top of the positioned material 6 for making button batteries. During this process, the bottom of the upper die top block 904 retracts inward to be flush with the bottom of the upper die pressing block 903, so as to effectively and accurately perform the sealing and pressing operation on the button battery working material.

[0075] The sealing and pressing device is also provided with a blowing mechanism 10. During the downward movement of the connecting block 901, the external compressed gas enters the air guide cavity 1001 through the air inlet hole 1002 of the blowing mechanism 10 and blows out along the air blowing hole 1003 of the upper die top block 904 to blow off the electrolyte attached to the sealing and pressing upper die assembly 9, so as to effectively remove the electrolyte adhering to the sealing and pressing upper die assembly 9, effectively prevent the influence caused by the overflow of the electrolyte, and further ensure the continuous and effective progress of the sealing and pressing process.

[0076] The loading device further includes a loading workbench 13. A corresponding material positioning platform 1301 is movably installed on the loading workbench 13. The material positioning platform 1301 is driven by a driving cylinder 14 fixedly installed on the loading workbench 13. A corresponding stacking workbench 15 is fixedly installed on the outside of the loading workbench 13.

[0077] The nozzle mounting assembly 701 includes a fixed plate member 7011 fixedly connected to the outside of the connecting member 4. A corresponding L-shaped plate 7012 is liftably mounted on the fixed plate member 7011. The nozzles 702 are respectively fixedly mounted on the bottom sides of the corresponding L-shaped plates 7012. Corresponding sliding grooves are respectively provided on the fixed plate member 7011. The L-shaped plates 7012 are respectively movably clamped into the sliding grooves. A corresponding locking hole 16 is provided at the bottom of the L-shaped plate 7012. A corresponding locking flange 17 is provided in a circle in the middle of the locking hole 16. The L-shaped plate 7012 is locked and mounted on the fixed plate member 7011 by a corresponding locking bolt 18 passing through the locking hole 16. A tightening spring 19 sleeved on the rod end of the locking bolt 18 is press-fitted and mounted between the locking flange 17 and the bottom of the fixed plate member 7011.

[0078] In the present invention, through the improved design of the fixed plate member 7011 and the L-shaped plate 7012 of the nozzle mounting assembly 701, the sliding accuracy between the fixed plate member 7011 and the L-shaped plate 7012 is ensured. Then, through the intervention of components such as the locking hole 16, the locking flange 17, and the tightening spring 19, the position-adjustable mounting of the L-shaped plate 7012 is realized, so as to effectively realize the position-adjustable mounting of the L-shaped plate 7012 on the premise of high-precision position adjustment, ensure the high-precision adjustment of the mounting positions of the nozzles 702 of different button cell material picking mechanisms 7, ensure the adsorption stability of the materials, and further meet the realization of the fully automated feeding process in the assembly process.

[0079] The nozzles 702 are respectively fixedly connected to the bottom sides of the L-shaped plates 7012 through corresponding L-shaped connecting blocks 20. There are four nozzle mounting assemblies 701. A fixedly mounted plate 21 arranged in a cross shape is fixedly mounted on the connecting member 4. Corresponding mounting grooves are respectively recessed in four directions of the fixedly mounted plate 21. The fixed plate members 7011 of the nozzle mounting assemblies 701 are respectively fixedly clamped into the corresponding mounting grooves. Corresponding guide blocks 22 are fixedly connected to the inner sides of the fixed plate members 7011. Corresponding card slots 23 are respectively provided on the sides of the guide blocks 22 where they are not mounted on the fixed plate members 7011. The card slots 23 and the bottoms of the mounting grooves on the fixedly mounted plate 21 are respectively arranged at intervals.

[0080] The connecting air pipes of the nozzles 702 of the present invention can directly extend out along the intervals between the card slots 23 and the mounting grooves. Through the cooperation of the card slots 23 on the guide blocks 22 and the mounting grooves on the fixedly mounted plate 21, the ends of the connecting air pipes of the nozzles are fixed, so as to effectively ensure the connection airtightness of the nozzles in a continuously moving state.

[0081] The output end of the third driving mechanism 902 is arranged downward and fixedly connected with a corresponding threaded pipe 24 downward. The upper part of the connecting block 901 is fixedly connected to the threaded pipe 24 by a threaded connection method. The upper part of the first elastic member 905 is fixedly sleeved in the threaded pipe 24.

[0082] To ensure that the upper die top block 904 has sufficient pre-pressure, the first elastic member 905 needs to have a long compression stroke. Through the intervention of the threaded pipe 24, it is possible to achieve the convenient installation of the connecting block 901 and complete the installation of the first elastic member 905 with a long stroke on the premise of a compact structure.

[0083] The top of the bottom die base 801 is recessed downward with a corresponding fixing hole. A corresponding base spring ring 26 is movably installed upward in the fixing hole through a corresponding second elastic member 25. The base spring ring 26 extends to the upper side of the top of the bottom die base 801. A corresponding bottom die fixing block 27 is installed at the fixing hole of the bottom die base 801. The bottom of the bottom die fixing block 27 is inserted and closed to the bottom of the fixing hole. There is a gap between the top of the bottom die fixing block 27 and the fixing hole, and the top of the bottom die fixing block 27 extends to the upper side of the fixing hole of the bottom die base 801. The base spring ring 26 and the second elastic member 25 are fixedly sleeved between the bottom die fixing block 27 and the fixing hole according to height.

[0084] During the sealing and pressing process, the base spring ring 26 effectively forms an elastic buffer installation for the materials 6 for making button batteries under the action of the second elastic member 25, so as to cooperate with the upper die top block 904 to improve the pre-clamping and fixing effect on the materials 6 for making button batteries. And the bottom die base 801 of the present invention is fixedly installed with a bottom die fixing block 27 at the fixing hole. Through the intervention of the bottom die fixing block 27, the convenient disassembly and assembly of the base spring ring 26 and the second elastic member 25 are realized. When it is necessary to clean the electrolyte accumulated on the bottom die base 801, the base spring ring 26 can be removed, and then the bottom die fixing block 27 sleeved with the second elastic member 25 can be removed, which is very convenient.

[0085] The electrolyte adding device further includes a material fixing mechanism 28. The material fixing mechanism 28 includes a fixing bracket 2801 arranged at the bottom side of the fourth driving mechanism 12. A fixing jaw 2802 for fixing an electrolyte container bottle 29 filled with electrolyte is fixedly installed in the middle of the fixing bracket 2801. A gun head fixing box body 2803 for fixing the pipette gun head 30 is fixedly installed on the left side of the fixing bracket 2801. A gun head recycling box 2804 is fixedly installed on the right side of the fixing bracket 2801. A corresponding rotating jaw 31 is fixedly installed on the left side of the electrolyte pipette gun 11.

[0086] During the process of adding electrolyte, the electrolyte adding device of the present invention firstly unscrews the bottle cap of the electrolyte container bottle 29 by rotating the clamp 31, and fixes the bottle cap on the rotating clamp 31; then, the electrolyte pipette gun 11 moves left and descends, so that the pipette gun head 30 fixed on the gun head fixing box body 2803 is fixedly plugged into the end of the electrolyte pipette gun 11, and then the electrolyte pipette gun 11 rises and moves right; after the electrolyte pipette gun 11 moves to the position of the electrolyte container bottle 29, the electrolyte pipette gun 11 moves down and starts to extract liquid; after completing the electrolyte extraction, the electrolyte pipette gun 11 moves up Lift and move outward to the position where the bottom mold base 801 is located to add electrolyte; after completing a single electrolyte transfer and addition, the electrolyte pipette gun 11 moves right to the upper side of the gun head recovery box 2804, and then the pipette gun head 30 is blown off the end of the electrolyte pipette gun 11, so that the pipette gun head 30 is recovered into the gun head recovery box 2804; after cycling several times of electrolyte transfer and addition, the bottle cap is screwed back to the electrolyte container bottle 29 by rotating the clamp 31, and then the empty electrolyte container 29 bottle is taken out by the loading device, and the new electrolyte container bottle 29 filled with electrolyte is loaded and clamped in place again. This can effectively improve the degree of automation of each process such as electrolyte acquisition, transfer and addition, and replacement of the pipette gun head 30, as well as the smoothness of connection, thereby meeting the realization of the fully automated process of electrolyte addition in the assembly process.

[0087] A corresponding mounting part 32 is fixedly installed on the right side of the electrolyte pipette gun 11, and a material receiving part 33 located on the bottom side of the end of the electrolyte pipette gun 11 can be swingably installed on the mounting part 32, and a liquid collecting chamber 34 corresponding to the end of the electrolyte pipette gun 11 is provided on the material receiving part 33, and the material receiving part 33 is swing-driven by a corresponding swing driving mechanism 35; the swing driving mechanism 35 includes a group of swing rods 3501 hinged on the mounting part 32, and the ends of the swing rods 3501 that are not hinged to the mounting part 32 are respectively hinged to the material receiving part 33, and one of the swing rods 3501 is transmission-connected to the output shaft end of the driving motor 3502 installed on the mounting part 32.

[0088] When the swing drive mechanism 35 drives the receiving piece 33 to swing upward, the bottom side of the end of the electrolyte pipette gun 11 is no longer blocked, and normal electrolyte loading and unloading operations can be performed at this time; and during the transfer of the electrolyte, the swing drive mechanism 35 drives the receiving piece 33 to swing downward, so that the electrolyte dripping along the end of the electrolyte pipette gun 11 can be collected through the liquid collecting chamber 34 arranged on the receiving piece 33, thereby effectively preventing contamination of the button battery assembly equipment.

[0089] The fixed bracket 2801 is respectively provided with corresponding gear convex edges 36 at positions corresponding to the gun head fixing box body 2803 and the gun head recycling box 2804. The gun head fixing box body 2803 and the gun head recycling box 2804 are respectively fixedly embedded inside the corresponding gear convex edges 36. The fixed bracket 2801 is provided with clamping jaws 37 for clamping and fixing the gun head fixing box body 2803.

[0090] The first driving mechanism 2 adopts a manipulator, the second driving mechanism 802 and the third driving mechanism 902 adopt screw driving mechanisms, and the fourth driving mechanism 12 adopts a three-axis motion mechanism.

[0091] Embodiment 2

[0092] The button cell assembling device in this embodiment further includes an open circuit voltage detector 38 for detecting the open circuit voltage of the button cell after assembly. The materials 6 for making the button cell include a positive electrode shell, a pole piece, a separator, a lithium piece, a gasket, a spring piece, and a negative electrode shell.

[0093] The control method of the button cell assembling device includes:

[0094] Define the encapsulation pressure value, mean value, and variance of the encapsulation device as: x1, μ1, σ1; the encapsulation pressing holding time value, mean value, and variance as: x2, μ2, σ2; the positive electrode shell thickness value, mean value, and variance as: x3, μ3, σ3; the positive electrode sheet diameter value, mean value, and variance as: x4, μ4, σ4; the negative electrode shell thickness value, mean value, and variance as: x5, μ5, σ5; the negative electrode sheet diameter value, mean value, and variance as: x6, μ6, σ6; the electrolyte addition amount value, mean value, and variance as: x7, μ7, σ7; the gasket thickness value, mean value, and variance as: x8, μ8, σ8; the spring piece thickness value, mean value, and variance as: x9, μ9, σ9.

[0095] According to the following formula, calculate the encapsulation multivariate Gaussian probability distribution of the encapsulation device:

[0096] ;

[0097] Through the multivariate Gaussian probability distribution, based on the acquisition function in Bayesian optimization, select 10 points that are predicted to produce the optimal results as test assembly parameters. After encapsulating the products composed of each group of test assembly parameters, use the open circuit voltage detector 38 to detect the open circuit voltage of the products composed of each group of test assembly parameters, and select the test assembly parameters with the highest open circuit voltage value as the assembly parameters of the product.

[0098] The present invention first obtains the encapsulated multivariate Gaussian probability distribution of various parameters such as the encapsulation pressure value, and obtains 10 points of the optimal result based on the acquisition function in Bayesian optimization as the test assembly parameters. Then, the open-circuit voltage detector 38 is used to detect the open-circuit voltage of the products composed of each group of test assembly parameters, and the test assembly parameters with the highest open-circuit voltage value are selected as the assembly parameters of the products, thereby effectively ensuring that the assembled products have high performance.

[0099] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A button battery assembly device, comprising a feeding device, an electrolyte adding device and a sealing device, characterized in that: The feeding device comprises: A rotating motor (1) is driven by a corresponding first driving mechanism (2), wherein the output shaft end of the rotating motor (1) is arranged downward; The material tray taking mechanism (3) comprises an electromagnet (301) which is transmission-connected to the lower side of the output shaft end of the rotating motor (1) through a corresponding connecting piece (4), and a magnetic metal piece (302) fixedly connected to a corresponding material tray (5), wherein the material tray (5) is respectively embedded with materials (6) for making button batteries; A button cell material taking mechanism (7) comprises a plurality of suction nozzle mounting assemblies (701) fixedly connected to the outer bottom of the connecting member (4), wherein each of the suction nozzle mounting assemblies (701) is provided with a suction nozzle facing downwards for adsorbing and fixing the button cell manufacturing material (6) on the material tray; The sealing device comprises: A sealing and pressing bottom die assembly (8), comprising a bottom die seat (801) movably mounted on a corresponding sealing and pressing workbench, wherein the bottom die seat (801) is driven by a corresponding second driving mechanism (802); The sealing upper die assembly (9) comprises a connecting block (901) which is movably arranged on the upper side of the sealing workbench, the connecting block (901) being driven by a corresponding third driving mechanism (902), a corresponding upper die pressing block (903) being fixedly mounted on the bottom side of the connecting block (901), a corresponding upper die top block (904) being movably installed through the middle of the upper die pressing block (903), the top of the upper die top block (904) being connected to the connecting block (901) via a first elastic member (905), and the bottom of the upper die top block (904) extending to the lower side of the bottom end of the upper die pressing block (903); The blowing mechanism (10) comprises an air guide cavity (1001) arranged on the connecting block (901), the connecting block (901) is provided with an air inlet hole (1002) connected to the air guide cavity (1001), and the upper mold top block (904) is evenly provided with a plurality of blowing holes (1003) connected to the air guide cavity (1001); The electrolyte adding device comprises: An electrolyte pipette gun (11), wherein the electrolyte pipette gun (11) is driven by a corresponding fourth driving mechanism (12), and electrolyte is quantitatively added between the button battery manufacturing materials (6) during the stacking process through the electrolyte pipette gun (11).

2. A button battery assembly device according to claim 1, characterized in that: The loading device further comprises a loading workbench (13), on which a corresponding material positioning platform (1301) is movably mounted, and the material positioning platform (1301) is driven by a driving cylinder (14) fixedly mounted on the loading workbench (13), and a corresponding material stacking workbench (15) is fixedly mounted on the outer side of the loading workbench (13).

3. The button battery assembly equipment according to claim 1, characterized in that: The suction nozzle installation assembly (701) comprises a fixed plate (7011) fixedly connected to the outer side of the connecting member (4); a corresponding L-shaped plate (7012) is installed on the fixed plate (7011) in a lifting manner; the suction nozzles (702) are fixedly installed on the bottom sides of the corresponding L-shaped plates (7012); corresponding sliding grooves are respectively arranged on the fixed plate (7011); the L-shaped plates (7012) are respectively movably connected to the sliding grooves; the L-shaped plates (7012) are respectively A corresponding locking hole (16) is provided at the bottom, a circle of corresponding locking protrusions (17) is provided in the middle of the locking hole (16), and a corresponding locking bolt (18) passes through the locking hole (16) to lock and install the L-shaped plate (7012) on the fixed plate (7011), and a set of tensioning springs (19) provided on the end of the rod of the locking bolt (18) are pressed and installed between the locking protrusion (17) and the bottom of the fixed plate (7011).

4. The button battery assembly equipment according to claim 3, characterized in that: The suction nozzles (702) are fixedly connected to the bottom side of the L-shaped plate (7012) through corresponding L-shaped connecting blocks (20), there are four suction nozzle mounting assemblies (701), a cross-shaped fixed mounting plate (21) is fixedly mounted on the connecting member (4), four directions of the fixed mounting plate (21) are respectively provided with corresponding mounting grooves, the fixed plate members (7011) of the suction nozzle mounting assembly (701) are respectively fixedly clamped into the corresponding mounting grooves, the inner sides of the fixed plate members (7011) are respectively fixedly connected with corresponding guide blocks (22), the sides of the guide blocks (22) not mounted on the fixed plate members (7011) are respectively provided with corresponding clamping grooves (23), and the clamping grooves (23) are respectively arranged at intervals from the bottom of the mounting grooves on the fixed mounting plate (21).

5. The button battery assembly equipment according to claim 1, characterized in that: The output end of the third driving mechanism (902) is arranged downward and fixedly connected downwardly to a corresponding threaded tube (24); the upper part of the connecting block (901) is fixedly connected to the threaded tube (24) by means of a threaded connection; and the upper part of the first elastic member (905) is fixedly sleeved in the threaded tube (24).

6. The button battery assembly equipment according to claim 1, characterized in that: A corresponding fixing hole is recessed downward at the top of the bottom mold base (801), and a corresponding base elastic ring (26) is movably installed upward in the fixing hole through a corresponding second elastic member (25), and the base elastic ring (26) extends to the upper side of the top of the bottom mold base (801); a corresponding bottom mold fixing block (27) is installed at the fixing hole of the bottom mold base (801), and the bottom of the bottom mold fixing block (27) is closed and plugged into the bottom of the fixing hole, and the top of the bottom mold fixing block (27) is spaced from the fixing hole, and the top of the bottom mold fixing block (27) extends to the upper side of the fixing hole of the bottom mold base (801), and the base elastic ring (26) and the second elastic member (25) are fixedly sleeved between the bottom mold fixing block (27) and the fixing hole according to height.

7. The button battery assembly equipment according to claim 1, characterized in that: The electrolyte adding device also includes a material fixing mechanism (28), the material fixing mechanism (28) includes a fixing bracket (2801) arranged on the bottom side of the fourth driving mechanism (12), a fixing clamp (2802) for fixing an electrolyte container bottle (29) filled with electrolyte is fixedly installed in the middle of the fixing bracket (2801), a tip fixing box (2803) for fixing a pipette tip (30) is fixedly installed on the left side of the fixing bracket (2801), a tip recovery box (2804) is fixedly installed on the right side of the fixing bracket (2801), and a corresponding rotating clamp (31) is fixedly installed on the left side of the electrolyte pipette gun (11).

8. The button battery assembly equipment according to claim 7, characterized in that: A corresponding mounting member (32) is fixedly mounted on the right side of the electrolyte pipette gun (11); a material receiving member (33) located at the bottom side of the end of the electrolyte pipette gun (11) is swingably mounted on the mounting member (32); a liquid collecting chamber (34) corresponding to the end of the electrolyte pipette gun (11) is provided on the material receiving member (33); the material receiving member (33) is swingably driven by a corresponding swing driving mechanism (35); the swing driving mechanism (35) comprises a group of swinging rods (3501) hinged on the mounting member (32); the ends of the swinging rods (3501) not hinged on the mounting member (32) are respectively hinged on the material receiving member (33); one of the swinging rods (3501) is transmission-connected to the output shaft end of a driving motor (3502) mounted on the mounting member (32).

9. The button battery assembly equipment according to claim 8, characterized in that: The fixed bracket (2801) is provided with corresponding shifting ridges (36) at positions corresponding to the gun tip fixing box (2803) and the gun tip recovery box (2804), and the gun tip fixing box (2803) and the gun tip recovery box (2804) are respectively fixedly embedded in the inner sides of the corresponding shifting ridges (36); the fixed bracket (2801) is provided with a clamping claw (37) for clamping and fixing the gun tip fixing box (2803); the first driving mechanism (2) adopts a manipulator, the second driving mechanism (802) and the third driving mechanism (902) adopt a screw driving mechanism, and the fourth driving mechanism (12) adopts a three-axis motion mechanism.

10. The button battery assembly equipment according to claim 1, characterized in that: The button cell assembly equipment further comprises an open circuit voltage detector (38) for detecting the open circuit voltage of the button cell after assembly. The button cell manufacturing materials (6) comprise a positive electrode shell, a positive electrode sheet, a diaphragm, a negative electrode sheet, a gasket, a spring, and a negative electrode shell; The control method of the button battery assembly equipment comprises: The packaging pressure value, mean value and variance of the sealing and pressing device are defined as x1, μ1 and σ1 respectively; the packaging and pressing holding time value, mean value and variance are x2, μ2 and σ2 respectively; the positive electrode shell thickness value, mean value and variance are x3, μ3 and σ3 respectively; the positive electrode sheet diameter value, mean value and variance are x4, μ4 and σ4 respectively; the negative electrode shell thickness value, mean value and variance are x5, μ5 and σ5 respectively; the negative electrode sheet diameter value, mean value and variance are x6, μ6 and σ6 respectively; the electrolyte addition amount value, mean value and variance are x7, μ7 and σ7 respectively; the gasket thickness value, mean value and variance are x8, μ8 and σ8 respectively; the spring sheet thickness value, mean value and variance are x9, μ9 and σ9 respectively; The packaging multivariate Gaussian probability distribution of the sealing device is calculated according to the following formula: ； Through the multivariate Gaussian probability distribution, based on the acquisition function in Bayesian optimization, at least 10 points predicted to produce the best results are selected as test assembly parameters. After the products composed of each group of test assembly parameters are packaged, the open circuit voltage of the products composed of each group of test assembly parameters is detected by the open circuit voltage detector (38), and the test assembly parameter with the highest open circuit voltage value is selected as the assembly parameter of the product.

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