CN114361743A - Liquid injection sealing equipment of lithium battery and use method thereof - Google Patents
Liquid injection sealing equipment of lithium battery and use method thereof Download PDFInfo
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- CN114361743A CN114361743A CN202210020726.6A CN202210020726A CN114361743A CN 114361743 A CN114361743 A CN 114361743A CN 202210020726 A CN202210020726 A CN 202210020726A CN 114361743 A CN114361743 A CN 114361743A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The application relates to liquid injection sealing equipment of a lithium battery, which comprises a primary sealing device and a secondary sealing device; the primary sealing device comprises a first machine body and a first rotary disc, wherein a placing frame is arranged on the first rotary disc, a liquid injection frame with an opening claw piece is arranged on the first machine body in a lifting mode, a liquid injection pipe is arranged on the opening claw piece, the liquid injection pipe is connected with a liquid injection pump, and an opening and closing assembly is connected onto the liquid injection frame; the first machine body is provided with a connecting frame, the connecting frame is provided with a standing shaping pressure head and a standing shaping cylinder, a clamping plate is arranged on the first machine body in a sliding mode, the first machine body is provided with a driving cylinder connected with the clamping plate, and the clamping plate is provided with an electric heating wire; the secondary sealing device comprises a second machine body and a second rotary table, wherein a jig box is arranged on the second rotary table, a pressing plate cylinder and a sealing pressing plate are arranged on the second machine body, a pricking pin is arranged on the sealing pressing plate, an air suction hole connected with an air suction pump is formed in the pricking pin, and an electric heating wire is arranged on the sealing pressing plate; the first machine body and the second machine body are internally provided with rotating motors. This application has the effect that improves work efficiency.
Description
Technical Field
The invention relates to the technical field of lithium battery manufacturing equipment, in particular to liquid injection sealing equipment of a lithium battery and a using method thereof.
Background
With the progress of the battery industry, the production and application of lithium batteries are rapidly developed. Because the lithium battery has the advantages of high energy density, high average use voltage, flat use voltage, high capacity, long service life, environmental protection and the like, the lithium battery gradually replaces a lead-acid battery and a nickel-cadmium battery, has been widely applied to the fields of electric automobiles, mobile phones, notebook computers, household appliances and the like in recent years, and has become a main role in the battery market.
The production process of the lithium battery mainly comprises the steps of preparing electrode slurry, manufacturing positive and negative pole cores of the battery by using a current collector with the electrode slurry, filling the pole cores into an aluminum plastic film with punched pits to form a soft package battery without liquid injection, injecting specified amount of electrolyte into the soft package battery core, pumping out gas in the battery core, completing sealing, finally testing the battery and the like.
The liquid injection and sealing process of the lithium battery is always a difficult problem. The liquid is annotated and is separately gone on with sealing to traditional mode adoption usually, transports the battery by annotating the liquid machine to the capper in and seal the link after annotating liquid and accomplishing, needs two steps of processes, consequently is furnished with multiple staff and transports work, and intensity of labour is big, the production efficiency of battery is low.
Disclosure of Invention
The invention aims to provide liquid injection sealing equipment for a lithium battery, which has the characteristics of reducing the number of workers in a liquid injection link and a sealing ring link of the battery in the production process of the battery, reducing the working strength and improving the production efficiency of the battery.
The above object of the present invention is achieved by the following technical solutions:
the liquid injection sealing device of the lithium battery is characterized by comprising a primary sealing device and a secondary sealing device;
the primary sealing device comprises a first machine body and a first rotary table rotatably arranged on the first machine body, a placing frame is arranged on the first rotary table, a liquid injection frame is arranged on the first machine body in a lifting mode, an opening claw piece used for opening a battery bag is arranged at the bottom of the liquid injection frame and is inserted into the battery bag, a liquid injection pipe is arranged in the opening claw piece and is connected with a liquid injection pump, and an opening and closing assembly used for controlling the opening claw piece to open or close is connected to the liquid injection frame;
the first machine body is provided with a connecting frame, the bottom of the connecting frame is provided with a standing reshaping pressure head, the top of the connecting frame is provided with a standing reshaping air cylinder, a piston rod of the standing reshaping air cylinder is fixedly connected with the standing reshaping pressure head, and the standing reshaping pressure head is abutted against the inner wall of the battery bag;
the first machine body is further provided with a clamping plate connected to the first machine body in a sliding mode, the clamping plate is clamped at the edge of the battery bag, the first machine body is further provided with a driving cylinder used for driving the clamping plate to move, one side, clamped with the battery bag, of the clamping plate is provided with an electric heating wire, and the electric heating wire abuts against the opening of the battery bag;
the secondary sealing device comprises a second machine body and a second rotary table which is rotatably arranged in the second machine body, a jig box for clamping the battery bag is arranged on the second rotary table, a pressing plate cylinder is arranged on the second machine body, a sealing pressing plate for secondarily sealing the battery bag is arranged on a piston rod of the pressing plate cylinder, a pricking pin is arranged on one side, facing the battery bag, of the sealing pressing plate, an air suction hole is formed in the pricking pin, the air suction hole of the pricking pin is connected with an air suction pump, and an electric heating wire is arranged on one side, clamping the battery bag, of the sealing pressing plate;
the first machine body and the second machine body are internally provided with a rotating motor used for driving the first rotating disc and the second rotating disc to rotate.
Through adopting above-mentioned technical scheme, when annotating the liquid and sealing the battery bag, place the battery bag on the rack, utilize the rotation of first carousel, drive rack and battery bag and shift to the below of annotating the liquid frame, will annotate liquid frame and opening claw piece and descend to the top of rack for opening claw piece is pegged graft in the battery bag, drives opening claw piece through opening and close the subassembly and opens the battery bag opening, utilizes to annotate the liquid pipe and annotate the liquid. Annotate the below that the liquid finishes with the battery bag transfer to the link, through the plastic pressure head that stews to the electrolyte in the battery bag the plastic that stews many times, stew the battery bag simultaneously to make electrolyte and naked electric core fully fuse later transfer through first carousel. And starting the driving cylinder to enable the clamping plate to clamp the edge of the battery bag, and melting the aluminum-plastic film through the electric heating wire so as to finish primary sealing, wherein a space is reserved between the primary sealing position and the battery core. And (3) puncturing the aluminum-plastic film by using a puncturing needle in the secondary sealing device, sucking air in the battery bag, starting an electric heating wire on the sealing pressing plate to carry out secondary sealing on the battery bag, and attaching the secondary sealing position to the side edge of the battery core to finally finish the sealing work.
The present invention in a preferred example may be further configured to: the vertical standing groove of having seted up on the rack, the top of standing groove is provided with the dislocation clamp, the dislocation hole has been seted up on the dislocation clamp, the one end in dislocation hole is osculum form setting, the osculum end in dislocation hole and the side butt of battery bag, the slide opening has been seted up on the rack, the slide opening is rectangular form setting, just the slide opening along the length direction of rack is seted up, the lateral wall that the dislocation pressed from both sides peg graft in the slide opening, just the dislocation press from both sides along the slide opening slides.
Through adopting above-mentioned technical scheme, place the battery bag in the standing groove to the osculum end butt joint battery bag's that utilizes dislocation hole one end when needs battery bag opening, makes the dislocation press from both sides and slides along the slide opening, makes the osculum end butt joint battery bag gradually of dislocation hole, thereby under the butt effect in dislocation hole, opens the opening of battery bag, so that annotate the liquid in the battery bag.
The present invention in a preferred example may be further configured to: still be provided with mounting bracket lift cylinder on the first organism, be provided with the mounting bracket on the mounting bracket lift cylinder, be provided with elevator motor on the mounting bracket, elevator motor's output pole fixedly connected with screw rod, annotate the liquid frame cover and locate the screw rod, be provided with the lift guide arm on the mounting bracket, annotate the liquid frame and slide the cover and locate on the lift guide arm.
Through adopting above-mentioned technical scheme, when first carousel drove rack and battery bag to rotate to annotating the below of liquid frame, start mounting bracket lift cylinder, drive the mounting bracket and slide and descend to suitable position, then start elevator motor and drive the screw rod and rotate, under the screw thread effect on the screw rod, annotate the liquid frame and slide and descend along the lift guide arm to make in the opening claw piece inserts the battery bag, can annotate the liquid operation. The lifting motor is used for driving the liquid injection frame to lift up and down, and the descending distance of the liquid injection frame can be adjusted by the lifting motor, so that when the battery bags of different sizes are injected with liquid, a proper descending distance can be selected.
The present invention in a preferred example may be further configured to: the one end of annotating the liquid frame is provided with and is used for the drive the dislocation cylinder that the dislocation pressed from both sides slided, the piston rod butt of dislocation cylinder in the dislocation is pressed from both sides, just the dislocation is pressed from both sides the butt and is provided with reset spring in the one end of dislocation cylinder, reset spring's both ends press from both sides and rack fixed connection with the dislocation respectively, open and close the subassembly including set up in control cylinder on the notes liquid frame, control cylinder's piston rod with opening claw piece fixed connection, just control cylinder with the dislocation cylinder is perpendicular setting.
Through adopting above-mentioned technical scheme, when elevator motor drove notes liquid frame and descend to suitable height, start the dislocation cylinder and make the piston rod butt of dislocation cylinder in the dislocation press from both sides one side that is close to the osculum end for the dislocation is pressed from both sides and is slided along the slide opening, thereby opens the opening of battery bag, thereby is convenient for insert the opening claw piece in the opening of battery bag. Through starting the control cylinder, the piston rod of the control cylinder drives the opening claw piece to move, the opening amplitude of the opening of the battery bag is increased, and therefore the liquid injection pipe can be accurately aligned to the inside of the battery bag.
The present invention in a preferred example may be further configured to: the fixed rod is arranged on the first machine body, the fixed plate is arranged on the fixed rod, the first air cylinder is arranged on the fixed plate, a piston rod of the first air cylinder penetrates through the fixed plate, a lifting plate is arranged on the piston rod of the first air cylinder, and the driving air cylinder is located on the lifting plate.
Through adopting above-mentioned technical scheme, accomplish to annotate liquid when the battery bag and stew the plastic after, utilize first cylinder to drive the lifter plate and descend for splint can be located the side of battery bag, and through the action that drives actuating cylinder, the piston rod that makes drive actuating cylinder drives the border of splint centre gripping battery bag, utilizes the electric heating wire on the splint to melt the plastic-aluminum membrane of electromagnetism bag, accomplishes once sealing.
The present invention in a preferred example may be further configured to: the sealing base is arranged at the bottom of the second rotary table and is in clamping fit with the sealing press plate in the second machine body in a lifting mode, the sealing press plate and the sealing base are oppositely arranged, a jack matched with the puncture needle in an inserting mode is formed in the sealing base, and the puncture needle is inserted into the jack.
Through adopting above-mentioned technical scheme, when the battery bag need carry out the evacuation operation, will seal the clamp plate and be close to each other with sealed base to the border of centre gripping battery bag. The prickling needles on the sealing pressing plate prick the aluminum plastic film of the battery bag to extract gas in the battery bag, so that a vacuum environment is formed in the battery bag. Then the electric heating wire on the sealing pressing plate carries out secondary sealing on the aluminum plastic film.
The present invention in a preferred example may be further configured to: the second machine body is provided with a base cylinder for driving the sealing base to ascend and descend, the base cylinder is located at the bottom of the second rotary table, a piston rod of the base cylinder is fixedly connected with the sealing base, and the base cylinder and the pressing plate cylinder act simultaneously.
Through adopting above-mentioned technical scheme, utilize base cylinder and clamp plate cylinder to move simultaneously for when the battery bag shifts to the below of seal pressing plate, seal pressing plate and seal base can be close to each other simultaneously, live the outer plastic-aluminum membrane centre gripping of tool box, thereby can carry out the secondary to the battery bag and seal.
The present invention in a preferred example may be further configured to: be provided with the cylinder frame on the second organism, be provided with control on the cylinder frame the second cylinder that sealing plate goes up and down, the piston rod of second cylinder is provided with the clamp plate frame, sealing plate is located the bottom of clamp plate frame, aspiration pump fixed mounting in on the clamp plate frame, be provided with the felting needle cylinder that the control felting needle removed on the clamp plate frame, the felting needle with the piston rod fixed connection of felting needle cylinder.
Through adopting above-mentioned technical scheme, utilize the second cylinder to drive the clamp plate frame oscilaltion, control seal pressing plate and seal base centre gripping battery bag's plastic-aluminum membrane, when seal pressing plate and seal base centre gripping battery bag, start the felting needle cylinder, pop out the surface of seal pressing plate with the felting needle to pierce the plastic-aluminum membrane, extract the gas in the packing.
The present invention in a preferred example may be further configured to: still be provided with on the second organism and cut the mount, the top of cutting the mount is provided with cuts the cylinder, be provided with the blade that cuts that is used for cutting the battery bag on cutting the piston rod of cylinder, cut the blade with cut the mount and slide and be connected, cut the blade with the border laminating of tool box.
Through adopting above-mentioned technical scheme, when the battery bag accomplished the secondary and sealed, the secondary was sealed and was left unnecessary packing between the department and once sealing, consequently shifts the battery bag to the below of cutting the mount, starts to cut the cylinder and drives to cut the cutting blade and amputate the plastic-aluminum membrane that exposes outside the tool box for the battery outward appearance is compacter and pleasing to the eye.
In a second aspect, the application provides a method for using a liquid injection sealing device of a lithium battery, which adopts the following technical scheme:
a liquid filling and sealing apparatus using the lithium battery as claimed in any one of claims 1 to 9, further comprising the steps of:
s1, packaging the naked battery cell with an aluminum-plastic film to form a battery bag, wherein enough length is reserved on the edge of the aluminum-plastic film;
s2, placing the battery bag on a placing rack, and enabling the staggered clamp to clamp one side of the battery bag and enabling the battery bag to be in an upward opening state;
s3, starting the first turntable, transferring the battery bag to the lower part of the liquid injection rack, starting the dislocation cylinder and the control cylinder to open the opening of the battery bag, inserting the liquid injection pipe into the battery bag for liquid injection, and standing and shaping the battery bag after liquid injection;
s4, transferring the battery bag after liquid injection to the lower part of the clamping plate, starting the driving cylinder, enabling the clamping plate to clamp the edge of the battery bag, and enabling the electric heating wire to heat at the same time, so as to melt the aluminum plastic film to complete one-time sealing;
s5, transferring the primary sealed battery bag to a second turntable, and fixing the battery bag by using a jig box, wherein the edge of the primary seal of the battery bag is positioned outside the jig box, transferring the jig box and the battery bag to the lower part of a sealing pressure plate through the second turntable, starting a second air cylinder to press the sealing pressure plate between the battery core and the edge of the primary seal, enabling a pricking pin to prick the aluminum-plastic film outside the jig box and suck air in the battery bag, and simultaneously starting an electric heating wire on the sealing pressure plate to carry out secondary sealing on the vacuumized aluminum-plastic film;
and S6, transferring the battery bag with the secondary seal to the lower part of a cutting fixing frame, and cutting off the redundant aluminum-plastic film on the battery bag by using a cutting knife.
Through adopting above-mentioned technical scheme, a closing device at first places the battery bag on the rack, through the rotation of first carousel, makes the battery bag shift in proper order to annotate the below of liquid frame, link and lifter plate, annotates the liquid frame and open the opening of battery bag through utilizing the opening clamp, pours into electrolyte into in to the battery bag through annotating the liquid pipe. The standing and shaping pressure head on the connecting frame performs standing and shaping on the electrolyte in the battery bag, so that the electrolyte adhered to the battery bag is pushed into the battery bag. The lifting plate drives the clamping plate to clamp the side wall of the battery bag, and the battery bag is sealed once through the electric heating wire.
The secondary sealing device carries out vacuumizing operation on the battery bag after primary sealing, utilizes the pricking pin to prick the aluminum plastic film of the battery bag, extracts gas in the battery bag through the air pump, carries out secondary sealing on the battery bag through heating the aluminum plastic film, and finally transfers the battery bag to the lower part of the cutting blade through the second turntable for cutting.
In summary, the invention includes at least one of the following beneficial technical effects:
the battery bags are sequentially placed on the first rotating disc and the second rotating disc, so that the battery bags are automatically transferred into the sealing device for sealing after liquid injection is completed, the number of workers required by processing operation is reduced, and the cost is reduced;
the battery production process is electrically controlled, so that the battery production speed is increased, the working efficiency is improved, and the large-scale production can be realized.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a primary closure assembly of the present invention;
FIG. 3 is a schematic view of a rack in the primary sealer of the present invention;
FIG. 4 is a schematic view of a liquid injection stand in the primary sealing device of the present invention;
FIG. 5 is a schematic view of the connecting frame of the primary sealing device of the present invention;
FIG. 6 is a schematic view of the clamp plate and the actuating cylinder in the primary sealing apparatus of the present invention;
FIG. 7 is a schematic view of a secondary closure of the present invention;
FIG. 8 is a schematic view showing the internal structure of the secondary sealing device according to the present invention;
FIG. 9 is a schematic view of a platen frame and sealing platen and lancet on the platen frame in the secondary sealing device of the present invention.
Description of reference numerals: 1. a primary sealing device; 100. a first body; 101. a first turntable; 102. a feed channel; 103. a sealing door; 104. an operation hole; 105. hooking claws; 106. placing a rack; 107. a placement groove; 108. a slide hole; 109. staggered clamps; 110. a dislocation hole; 111. a return spring; 112. a mounting frame lifting cylinder; 113. a sliding guide rod; 114. a mounting frame; 115. a lifting motor; 116. a screw; 118. a liquid injection frame; 119. a dislocation cylinder; 120. an open claw piece; 121. controlling the cylinder; 122. a liquid injection pipe; 123. a liquid injection pump; 124. a connecting frame; 125. standing and shaping the air cylinder; 126. standing and shaping a pressure head; 127. fixing the rod; 128. a fixing plate; 129. a first cylinder; 130. a lifting plate; 131. a splint; 132. a driving cylinder; 133. connecting blocks; 134. a clamp plate guide rod; 2. a secondary sealing device; 200. a second body; 201. a second turntable; 202. placing holes; 203. a jig box; 204. a jig base; 205. a jig cover; 206. a jig groove; 207. a plate pressing frame; 208. sealing the pressure plate; 209. a platen cylinder; 210. sealing the base; 211. a base cylinder; 212. a needle; 213. an air pump; 214. a pricking pin cylinder; 215. a jack; 216. cutting the fixing frame; 217. cutting knife; 218. cutting a sliding rod; 219. and (6) cutting the cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a liquid injection sealing apparatus for a lithium battery, including a primary sealing device 1 and a secondary sealing device 2.
Referring to fig. 2, the primary sealing device 1 includes a first body 100 and a first rotary plate 101 rotatably mounted on the first body 100, specifically, the first body 100 is provided with a sealing structure, a feeding channel 102 for placing a battery bag into the first body 100 is fixedly mounted on the first body 100, one end of the feeding channel 102 away from the first body 100 is provided with a feeding port, the feeding port is hinged with a sealing door 103, and a sealing strip is fixedly mounted on the inner side of the sealing door 103.
Referring to fig. 2, an operation hole 104 for a worker to place a discharge cell bag is formed in one side of the first body 100, the operation hole 104 is located above the feeding channel 102, and rubber gloves are fixedly installed on the operation hole 104, so that an external environment is isolated from an environment in the first body 100.
Referring to fig. 2, the first rotary plate 101 is located at the center of the first body 100, a rotary motor for driving the first rotary plate 101 to rotate is installed in the first body 100, the rotary motor is located below the first rotary plate 101, and an output shaft of the rotary motor is fixedly connected to the first rotary plate 101. In this embodiment, the rotating motor is a stepping motor.
Referring to fig. 3, a placing frame 106 for placing the battery bags is fixedly installed on the first rotating disc 101, a placing groove 107 is formed in the top of the placing frame 106, and the placing groove 107 is formed along the length direction of the placing frame 106. A plurality of sliding holes 108 are formed in the side wall of the placing groove 107, the sliding holes 108 are arranged in a long strip shape, and the plurality of sliding holes 108 are distributed at equal intervals along the length direction of the placing frame 106. The top of the placing frame 106 is provided with a dislocation clamp 109 in a sliding manner, two sides of the dislocation clamp 109 are provided with hook claws 105, the hook claws 105 are inserted into the sliding holes 108, and the hook claws 105 are matched with the sliding holes 108 in a sliding manner.
Referring to fig. 3, the top of the dislocation clamp 109 is provided with a dislocation hole 110, and the battery bag is placed in the dislocation hole 110. One end of the dislocation hole 110 is disposed in a small opening shape, and the small opening end of the dislocation clip 109 abuts against one side of the battery bag. One end of the placing frame 106 is fixedly connected with a return spring 111 for pulling the dislocation clamp 109 to reset, and the other end of the return spring 111 is fixedly connected with a small end of the dislocation clamp 109. The dislocation clamp 109 has a plurality of dislocation holes 110, and the plurality of dislocation holes 110 are distributed at equal intervals along the length direction of the dislocation clamp 109. In this embodiment, four placing frames 106 are disposed on the first turntable 101, and the four placing frames 106 respectively surround the periphery of the first turntable 101 to form a square arrangement.
Referring to fig. 4, a mount lifting cylinder 112 is fixedly mounted on the first body 100, the mount lifting cylinder 112 is vertically disposed, and the mount lifting cylinder 112 is located at a side of the operation hole 104. The first body 100 is further fixedly provided with a sliding guide rod 113, a piston rod of the mounting frame lifting cylinder 112 is fixedly connected with a mounting frame 114, two ends of the mounting frame 114 are respectively sleeved on the sliding guide rod 113, and the mounting frame 114 is in sliding fit with the sliding guide rod 113.
Referring to fig. 4, a lifting motor 115 is fixedly installed on the mounting frame 114, the lifting motor 115 is located in the middle of the mounting frame 114, and the lifting motor 115 is vertically disposed. A screw 116 is fixedly mounted on an output shaft of the elevating motor 115. Still overlap on the guide arm 113 that slides and be equipped with notes liquid frame 118, offer in the screw on the notes liquid frame 118, the screw runs through the upper and lower surface of notes liquid frame 118, and screw rod 116 wears to locate in the screw for annotate liquid frame 118 and screw rod 116 threaded connection, thereby when elevator motor 115 rotated, through screw rod 116 drive notes liquid frame 118 along the guide arm 113 that slides and go up and down.
Referring to fig. 4, a misalignment cylinder 119 for controlling the misalignment clamp 109 to slide is fixedly installed at one end of the liquid injection frame 118, piston rods of the misalignment cylinder 119 are distributed along the length direction of the liquid injection frame 118, and when the liquid injection frame 118 descends along the sliding guide rod 113 to slide, the piston rod of the misalignment cylinder 119 abuts against one side of the misalignment clamp 109 close to the small opening end, so that the misalignment clamp 109 slides along the sliding hole 108.
Referring to fig. 4, an opening claw piece 120 for opening an opening of the battery bag is mounted at the bottom of the liquid injection rack 118, and the opening claw piece 120 is inserted into the battery bag. The open claw pieces 120 have two pieces, the two open claw pieces 120 are oppositely arranged, and the open claw pieces 120 are parallel to the length direction of the opening of the battery bag. The lateral wall of the liquid injection frame 118 is fixedly provided with a control cylinder 121 for driving the two open claw pieces 120 to approach or separate, specifically, the control cylinder 121 and the dislocation cylinder 119 are vertically arranged, one open claw piece 120 is fixedly connected with the liquid injection frame 118, the other open claw piece 120 is fixedly connected with a piston rod of the control cylinder 121, and the piston rod of the control cylinder 121 is used for driving the two open claw pieces 120 to separate from each other, so that the opening of the battery bag is clamped. The bottom of the liquid injection frame 118 is further provided with an injection pipe 122, one end of the injection pipe 122 is positioned between the two open claws 120, the other end of the injection pipe 122 is connected with an injection pump 123, and when the open claws 120 open the opening of the battery bag, the injection pipe 122 injects electrolyte into the battery bag. In this embodiment, there are multiple sets of open claws 120, the multiple sets of open claws 120 are distributed at equal intervals along the length direction of the liquid injection rack 118, and each set of open claws 120 corresponds to each dislocation hole 110 one by one.
Referring to fig. 5, a connecting frame 124 is fixedly mounted on the first machine body 100, the connecting frame 124 and the operation hole 104 are arranged relatively, a standing shaping cylinder 125 is fixedly mounted at the top of the connecting frame 124, the standing shaping cylinder 125 is arranged vertically, a through hole for a piston rod of the standing shaping cylinder 125 to pass through is formed in the connecting frame 124, a piston rod of the standing shaping cylinder 125 passes through one end of the through hole and is fixedly mounted on a standing shaping pressure head 126, when a battery bag is transferred to the lower portion of the connecting frame 124, the standing shaping cylinder 125 controls the standing shaping pressure head 126 to be inserted into the battery bag, and electrolyte adhered to the battery bag is scraped into the bottom of the battery bag.
Referring to fig. 6, a fixing rod 127 is vertically installed on the first body 100, a fixing plate 128 is installed at the top of the fixing rod 127, the fixing plate 128 is disposed opposite to the mounting frame 114, a first cylinder 129 is installed on the fixing plate 128, a lifting plate 130 is fixedly connected to a piston rod of the first cylinder 129, a clamping plate 131 for clamping the edge of the battery bag and a driving cylinder 132 for driving the clamping plate 131 to move are installed at the bottom of the lifting plate 130, a piston rod of the driving cylinder 132 is fixedly connected to the clamping plate 131, connecting blocks 133 are fixedly connected to both ends of the fixing plate 128, clamping plate guide rods 134 are installed on the connecting blocks 133, the clamping plate 131 is sleeved on the clamping plate guide rods 134, and the clamping plate 131 slides along the clamping plate guide rods 134, so that the opening of the battery bag is closed. One side of the clamping plate 131 facing the battery bag is provided with an electric heating wire, and when the clamping plate 131 clamps the battery bag, the electric heating wire melts the opening of the battery bag, so that the battery bag is sealed once.
Referring to fig. 7, the secondary sealing device 2 includes a second body 200 and a second rotating disc 201 rotatably mounted on the second body 200, the second rotating disc 201 is located inside the second body 200, and a driving motor for driving the second rotating disc 201 to rotate is mounted in the second body 200, and similarly, the driving motor is a stepping motor.
Referring to fig. 8, the second turntable 201 is provided with a placement hole 202, and the placement hole 202 penetrates the upper and lower surfaces of the second turntable 201. A jig box 203 for placing the battery bag is fixedly installed in the placing hole 202, and a gap is reserved between the jig box 203 and the edge of the placing hole 202. Specifically, the jig box 203 includes a jig seat 204 fixedly installed in the placement hole 202 and a jig cover 205 hinged to the jig seat 204, a jig groove 206 similar to the shape of the battery bag is formed in the jig seat 204, the jig cover 205 and the jig seat 204 are in clamping fit with the battery bag, and when the jig box 203 clamps the battery bag, the jig box 203 is located outside the jig box 203 at a time of sealing. In this example, three placing holes 202 are formed in the second turntable 201, and the three placing holes 202 are respectively arranged in a triangular shape around the center of the second turntable 201.
Referring to fig. 9, a pressing plate frame 207 is fixedly installed on the second body 200, a sealing pressing plate 208 for performing secondary sealing on the battery pack is installed below the pressing plate frame 207, a pressing plate cylinder 209 is fixedly installed at the top of the pressing plate frame 207, and a piston rod of the pressing plate cylinder 209 is fixedly connected with the sealing pressing plate 208. A sealing base 210 which is matched with the sealing pressing plate 208 to seal the battery bag is arranged in the second machine body 200, the sealing base 210 is positioned below the second turntable 201, the sealing base 210 and the sealing pressing plate 208 are oppositely arranged, and a base cylinder 211 which is used for controlling the sealing base 210 to ascend and descend is arranged below the sealing base 210. When the sealing press plate 208 and the sealing base 210 are close to each other, the sealing press plate 208 is attached to the sidewall of the jig box 203. When the jig rotates to the lower side of the pressing plate frame 207, the sealing pressing plate 208 and the sealing base 210 clamp the aluminum-plastic film of the battery bag exposed out of the jig box 203. In this embodiment, the platen cylinder 209 and the base cylinder 211 operate simultaneously.
Referring to fig. 9, when the sealing press plate 208 clamps the battery bag, a puncture needle 212 is movably installed on one side away from the jig box 203, an air suction hole is formed on the surface of the puncture needle 212, the air suction hole is communicated with an air suction pump 213, and the air suction pump 213 is fixedly connected to the press plate frame 207. When the needle pierces the battery bag, the air pump 213 pumps out the gas in the battery bag. The pressing plate frame 207 is also provided with a needle cylinder 214 for driving the needle 212 to move, and a piston rod of the needle cylinder 214 is fixedly connected with the needle 212. The top surface of the sealing base 210 is provided with a jack 215 matched with the puncture needle 212, and the puncture needle 212 is matched with the jack 215 in an inserting way.
Referring to fig. 9, an electric heating wire is installed on one side of the sealing pressing plate 208 clamping the battery bag, when the puncturing needle 212 vacuumizes the battery bag, the electric heating wire performs secondary sealing on the battery bag, and the secondary sealing position is closer to the battery core of the battery bag.
Referring to fig. 8, a cutting fixing frame 216 is further fixedly mounted on the second body 200, the cutting fixing frame 216 is located at the top of the second turntable 201, a cutting knife 217 for cutting the redundant aluminum-plastic film of the battery pack is slidably mounted on the cutting fixing frame 216, the cutting knife 217 is located on a side wall of the cutting fixing frame 216, a cutting slide bar 218 for sliding the cutting knife 217 is fixedly mounted on the cutting fixing frame 216, and the cutting slide bar 218 penetrates through the cutting knife 217. The top of the cutting fixing frame 216 is fixedly provided with a cutting cylinder 219 for driving the cutting knife 217 to slide up and down, and a piston rod of the cutting cylinder 219 is fixedly connected with the top of the cutting knife 217.
The implementation principle of the application is as follows: the battery bag provided with the battery core is placed on the placing frame 106, the first rotating disc 101 is started, the first rotating disc 101 drives the placing frame 106 and the battery bag to rotate to the position below the liquid injection frame 118, and the lifting motor 115 is controlled to enable the liquid injection frame 118 to slide and lift to the position above the placing frame 106. By controlling the piston rod of the dislocation cylinder 119 to extend to abut against the dislocation clamp 109, the small end of the dislocation clamp 109 abuts against the side edge of the battery bag, so that a gap is formed at the opening of the battery bag. The control cylinder 121 is controlled to separate the open claw piece 120 inserted into the battery bag, thereby expanding the opening of the battery bag, and at this time, the liquid injection pipe 122 injects the electrolyte into the battery bag. The stationary shaping ram 126 then pushes the adhered electrolyte into the battery bag and causes the battery bag to rest. The first turntable 101 transfers the battery bag to the clamping plate 131, the piston rod of the driving cylinder 132 drives the clamping plate 131 to close the opening of the battery bag, and the battery bag is heated by the electric heating wire on the clamping plate 131, so that the battery bag is sealed once.
The battery bag after the primary sealing is placed in the jig box 203, the second turntable 201 drives the battery bag to be transferred to the lower side of the sealing pressing plate 208, and meanwhile, the pressing plate cylinder 209 and the base cylinder 211 are controlled to move, so that the sealing pressing plate 208 and the sealing base 210 are mutually matched to clamp the part of the battery bag exposed out of the jig box 203. The gas in the battery bag is extracted by the gas extraction pump 213 by the puncture needle 212 being punctured into the battery bag by the puncture needle cylinder 214. After the extraction is finished, the electric heating wire on the sealing pressing plate 208 is started to perform secondary sealing on the battery bag. The second turntable 201 rotates again to transfer the battery bag to the lower part of the cutting fixing frame 216, and the cutting cylinder 219 is controlled to drive the cutting knife 217 to slide along the cutting slide bar 218, so that the aluminum plastic film of the battery bag outside the jig box 203 is cut off.
Example two:
s1, packaging the naked battery cell with an aluminum-plastic film to form a battery bag, wherein enough length is reserved on the edge of the aluminum-plastic film;
s2, placing the battery bag on the placing rack 106, and enabling the staggered clamp 109 to clamp one side of the battery bag and enabling the battery bag to be in an upward opening state;
s3, starting the first rotating disc 101, transferring the battery bag to the lower part of the liquid injection rack 118, starting the dislocation air cylinder 119 and the control air cylinder 121 to open the opening of the battery bag, inserting the liquid injection pipe 122 into the battery bag for liquid injection, and standing and shaping the battery bag after liquid injection;
s4, transferring the battery bag after liquid injection to the lower part of the clamping plate 131, starting the driving air cylinder 132, enabling the clamping plate 131 to clamp the edge of the battery bag, enabling the electric heating wire to heat, and melting the aluminum plastic film to complete one-time sealing;
s5, transferring the primary sealed battery bag onto a second turntable 201, and fixing the battery bag by using a jig box 203, wherein the edge of the primary seal of the battery bag is positioned outside the jig box 203, transferring the jig box 203 and the battery bag to the lower part of a sealing pressure plate 208 through the second turntable 201, starting a second air cylinder to press and hold the sealing pressure plate 208 between the battery core and the edge of the primary seal, making a puncture needle 212 puncture the aluminum-plastic film outside the jig box 203 and suck air in the battery bag, and simultaneously starting an electric heating wire on the sealing pressure plate 208 to perform secondary sealing on the vacuumized aluminum-plastic film;
and S6, transferring the battery bag with the secondary seal to the lower part of the cutting fixing frame 216, and cutting off the redundant aluminum-plastic film on the battery bag by using the cutting knife 217.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The liquid injection sealing device of the lithium battery is characterized by comprising a primary sealing device (1) and a secondary sealing device (2);
the primary sealing device (1) comprises a first machine body (100) and a first rotating disc (101) rotatably arranged on the first machine body (100), a placing frame (106) for placing a battery bag is arranged on the first rotating disc (101), a liquid injection frame (118) is arranged on the first machine body (100) in a lifting mode, an opening claw piece (120) used for opening the battery bag is arranged at the bottom of the liquid injection frame (118), the opening claw piece (120) is inserted into the battery bag, a liquid injection pipe (122) is arranged in the opening claw piece (120), the liquid injection pipe (122) is connected with a liquid injection pump (123), and an opening and closing assembly used for controlling the opening claw piece (120) to be opened or closed is connected onto the liquid injection frame (118);
the first machine body (100) is provided with a connecting frame (124), the bottom of the connecting frame (124) is provided with a standing shaping pressure head (126), the top of the connecting frame (124) is provided with a standing shaping cylinder (125), a piston rod of the standing shaping cylinder (125) is fixedly connected with the standing shaping pressure head (126), and the standing shaping pressure head (126) abuts against the inner wall of the battery bag;
the first machine body (100) is further provided with a clamping plate (131) connected to the first machine body (100) in a sliding mode, the clamping plate (131) is clamped at the edge of the battery bag, the first machine body (100) is further provided with a driving air cylinder (132) used for driving the clamping plate (131) to move, one side, clamped with the battery bag, of the clamping plate (131) is provided with an electric heating wire, and the electric heating member abuts against the opening of the battery bag;
the secondary sealing device (2) comprises a second machine body (200) and a second rotary table (201) rotatably arranged in the second machine body (200), a jig box (203) for clamping a battery bag is arranged on the second rotary table (201), a pressure plate cylinder (209) is arranged on the second machine body (200), a sealing pressure plate (208) for sealing the battery bag for the second time is arranged on a piston rod of the pressure plate cylinder (209), a puncture needle (212) is arranged on one side, facing the battery bag, of the sealing pressure plate (208), an air suction hole is formed in the puncture needle (212), the air suction hole of the puncture needle (212) is connected with an air suction pump (213), and an electric heating wire is arranged on one side, clamping the battery bag, of the sealing pressure plate (208);
the first machine body (100) and the second machine body (200) are internally provided with rotating motors used for driving the first rotating disc and the second rotating disc (201) to rotate.
2. The liquid injection sealing device for the lithium battery according to claim 1, wherein a placing groove (107) is vertically formed in the placing frame (106), a dislocation clamp (109) is arranged at the top of the placing groove (107), a dislocation hole (110) is formed in the dislocation clamp (109), one end of the dislocation hole (110) is arranged in a small opening shape, the small opening end of the dislocation hole (110) is abutted to the side edge of the battery bag, a sliding hole (108) is formed in the placing frame (106), the sliding hole (108) is arranged in a long strip shape, the sliding hole (108) is formed along the length direction of the placing frame (106), the side wall of the dislocation clamp (109) is inserted into the sliding hole (108), and the dislocation clamp (109) slides along the sliding hole (108).
3. The liquid injection sealing device of the lithium battery as claimed in claim 1, wherein the first body (100) is further provided with a mounting frame lifting cylinder (113), the mounting frame lifting cylinder (113) is provided with a mounting frame (114), the mounting frame (114) is provided with a lifting motor (115), an output rod of the lifting motor (115) is fixedly connected with a screw rod (116), the liquid injection frame (118) is sleeved on the screw rod (116), the mounting frame (114) is provided with a lifting guide rod (117), and the liquid injection frame (118) is slidably sleeved on the lifting guide rod (117).
4. The liquid injection sealing device of the lithium battery as claimed in claim 3, wherein a dislocation cylinder (119) for driving the dislocation clamp (109) to slide is arranged at one end of the liquid injection frame (118), a piston rod of the dislocation cylinder (119) abuts against the dislocation clamp (109), a reset spring (111) is arranged at one end of the dislocation clamp (109) abutting against the dislocation cylinder (119), two ends of the reset spring (111) are respectively fixedly connected with the dislocation clamp (109) and the placing frame (106), the opening and closing assembly comprises a control cylinder (121) arranged on the liquid injection frame (118), a piston rod of the control cylinder (121) is fixedly connected with the opening claw piece (120), and the control cylinder (121) and the dislocation cylinder (119) are vertically arranged.
5. The liquid injection sealing device for the lithium battery as claimed in claim 1, wherein a fixing rod (127) is disposed on the first body (100), a fixing plate (128) is disposed on the fixing rod (127), a first cylinder (129) is disposed on the fixing plate (128), a piston rod of the first cylinder (129) penetrates through the fixing plate (128), a lifting plate (130) is disposed on a piston rod of the first cylinder (129), and the driving cylinder (132) is located on the lifting plate (130).
6. The liquid injection sealing device for the lithium battery as claimed in claim 1, wherein a sealing base (210) is disposed in the second body (200) in a lifting manner and is in clamping fit with the sealing pressing plate (208), the sealing base (210) is located at the bottom of the second turntable (201), the sealing pressing plate (208) and the sealing base (210) are arranged oppositely, a jack (215) in splicing fit with the puncture needle (212) is formed in the sealing base (210), and the puncture needle (212) is spliced in the jack (215).
7. The liquid injection sealing device of the lithium battery as claimed in claim 6, wherein the second body (200) is provided with a base cylinder (211) for driving the sealing base (210) to move up and down, the base cylinder (211) is located at the bottom of the second turntable (201), a piston rod of the base cylinder (211) is fixedly connected with the sealing base (210), and the base cylinder (211) and the pressing plate cylinder (209) move simultaneously.
8. The liquid injection sealing device for the lithium battery as claimed in claim 6, wherein a cylinder frame is arranged on the second machine body (200), a second cylinder for controlling the sealing pressing plate (208) to ascend and descend is arranged on the cylinder frame, a pressing plate frame (207) is arranged on a piston rod of the second cylinder, the sealing pressing plate (208) is located at the bottom of the pressing plate frame (207), the air suction pump (213) is fixedly installed on the pressing plate frame (207), a needle cylinder (214) for controlling the needle (212) to move is arranged on the pressing plate frame (207), and the needle cylinder (212) is fixedly connected with the piston rod of the needle cylinder (214).
9. The liquid injection sealing device for the lithium battery as claimed in claim 1, wherein a cutting fixing frame (216) is further disposed on the second body (200), a cutting cylinder (219) is disposed at the top of the cutting fixing frame (216), a cutting blade (217) for cutting the battery bag is disposed on a piston rod of the cutting cylinder (219), the cutting blade (217) is slidably connected to the cutting fixing frame (216), and the cutting blade (217) is attached to the edge of the jig box (203).
10. The method for using the liquid filling and sealing device for the lithium battery as claimed in claim 1, which uses the liquid filling and sealing device for the lithium battery as claimed in any one of claims 1 to 9, and further comprises the following steps:
s1, packaging the naked battery cell with an aluminum-plastic film to form a battery bag, wherein enough length is reserved on the edge of the aluminum-plastic film;
s2, placing the battery bag on a placing rack (106), and enabling the dislocation clamp (109) to clamp one side of the battery bag and enabling the battery bag to be in an upward opening state;
s3, starting the first turntable (101), transferring the battery bag to the lower part of the liquid injection rack (118), starting the dislocation air cylinder (119) and the control air cylinder (121) to open the opening of the battery bag, inserting the liquid injection pipe (122) into the battery bag for injection, and standing and shaping the battery bag after injection;
s4, transferring the battery bag after liquid injection to the lower part of a clamping plate (131), starting a driving air cylinder (132), enabling the clamping plate (131) to clamp the edge of the battery bag, and enabling an electric heating wire to heat at the same time, so that the aluminum plastic film is melted to finish primary sealing;
s5, transferring the primary sealed battery bag to a second turntable (201), fixing the battery bag by using a jig box (203), wherein the edge of the primary sealed edge of the battery bag is positioned outside the jig box (203), transferring the jig box (203) and the battery bag to the lower part of a sealing pressure plate (208) through the second turntable (201), starting a second cylinder to press the sealing pressure plate (208) between the battery core and the edge of the primary sealed edge, enabling a puncture needle (212) to puncture the aluminum-plastic film outside the jig box (203) and suck air in the battery bag, and simultaneously starting an electric heating wire on the sealing pressure plate (208) to carry out secondary sealing on the vacuumized aluminum-plastic film;
and S6, transferring the battery bag with the secondary seal to the lower part of a cutting fixing frame (216), and cutting off the redundant aluminum-plastic film on the battery bag by using a cutting knife (217).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210020726.6A CN114361743B (en) | 2022-01-10 | 2022-01-10 | Liquid injection sealing equipment for lithium battery and application method of liquid injection sealing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210020726.6A CN114361743B (en) | 2022-01-10 | 2022-01-10 | Liquid injection sealing equipment for lithium battery and application method of liquid injection sealing equipment |
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| CN114361743A true CN114361743A (en) | 2022-04-15 |
| CN114361743B CN114361743B (en) | 2023-09-29 |
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| CN114361743B (en) | 2023-09-29 |
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