CN108054432B - Square cell winding device - Google Patents
Square cell winding device Download PDFInfo
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- CN108054432B CN108054432B CN201711241350.7A CN201711241350A CN108054432B CN 108054432 B CN108054432 B CN 108054432B CN 201711241350 A CN201711241350 A CN 201711241350A CN 108054432 B CN108054432 B CN 108054432B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a square battery core winding device which comprises a frame, a winding needle unit, a blanking unit, a material moving unit and a forming unit, wherein the winding needle unit comprises a winding needle which is arranged in an oval shape and a needle drawing mechanism which drives the winding needle to move along the normal direction of a frame panel, two blanking grooves are formed in the circumferential direction of the winding needle, the blanking unit comprises a first clamping unit with two first clamping mechanisms and a first moving unit which drives the two first clamping mechanisms to move oppositely or back to back, the first clamping mechanism comprises a blanking clamp and a driving assembly which is used for driving the blanking clamp to move into the blanking groove, the forming unit comprises a bearing table and a pressing unit with a first pressing plate which moves relative to the bearing table, and the material moving unit comprises a second clamping unit and a second moving unit which drives the second clamping unit to move between the first clamping unit and the bearing table. The square battery core winding device can improve the winding quality and the winding speed of the battery core, reduce tension fluctuation in the winding process of the winding needle and enable the winding needle to run at high speed.
Description
Technical Field
The invention relates to the technical field of battery production and manufacturing, in particular to a square battery core winding device.
Background
The lithium ion battery is widely applied with the characteristic performance advantages, such as a notebook computer, a video camera, mobile communication, an electric vehicle and the like, and meanwhile, the developed large-capacity lithium ion battery is tried in the electric vehicle, and is expected to become one of main power supplies of the electric vehicle in the 21 st century. In addition, lithium ion batteries will find application in satellites, aerospace and energy storage. The huge market demand and the continuous development of the lithium battery industry are facing to the development of the lithium battery industry, so that the technical requirements of the lithium battery industry and the quality requirements of products are continuously improved, for example, the requirements of the winding equipment for producing the lithium ion battery cell are that the performance is stable, the production speed is fast and the winding equipment has multiple functions, and the quality of the cell is inversely proportional to the tension fluctuation suffered in the winding process, so that the winding equipment of the cell is also required to have constant tension control in the winding process.
However, the winding needle mechanisms of the square battery cell winding machines in the current market all adopt diamond winding needles or oval winding needles to wind the square battery cells, and the winding tension fluctuation is increased due to the fact that the linear speed of the diamond winding needles or oval winding needles is greatly changed in the winding process, so that the quality of the wound battery cells is greatly affected. In order to solve the problem, the existing manufacturer adopts a processing mode that a network servo motor is used for controlling a diamond-shaped winding needle or an elliptic winding needle to perform constant linear speed winding, but the processing mode still has speed fluctuation of 10-15%, and along with the speed improvement, particularly when the winding speed is more than 800 millimeters per second, the tension fluctuation of the battery cell is increased, so that the production efficiency and the battery cell quality are further improved.
Disclosure of Invention
In order to solve the above problems, the main object of the present invention is to provide a square cell winding device with high production efficiency, improved cell winding quality and winding speed, reduced tension fluctuation during winding of winding pins, and high-speed operation of winding pins.
In order to achieve the main purpose of the invention, the invention provides a square electric core winding device, which comprises a frame, a winding needle unit, a blanking unit, a material moving unit and a forming unit, wherein the winding needle unit comprises a winding needle and a needle drawing mechanism, the winding needle is arranged in an elliptic shape, two blanking grooves which are arranged along the axial extension of the winding needle are arranged upwards in the circumference of the winding needle, the needle drawing mechanism drives the winding needle to reciprocate along the normal direction of a panel of the frame, the blanking unit comprises a first moving unit and a first clamping unit, the first clamping unit comprises two first clamping mechanisms which are arranged oppositely, the first moving unit drives the two first clamping mechanisms to move oppositely or back to each other, each first clamping mechanism comprises at least one driving component and at least one blanking clamp, the blanking clamps are arranged along the axial extension of the winding needle, the driving component drives the blanking clamps to move along the axial direction of the winding needle, the blanking clamps of the first clamping mechanisms are arranged in a matched manner with the blanking grooves, the material moving unit comprises a second moving unit and a second clamping unit, the second clamping unit comprises a first clamping unit and a second clamping unit, the first clamping unit is arranged between the first clamping unit and a second clamping unit and a first pressing unit and a second clamping unit, and a first pressing unit is arranged between the first clamping unit and a second clamping unit and a first pressing unit and a second pressing unit, and a first pressing unit is connected to the first pressing unit and a second clamping unit and a first pressing unit.
From the above, the winding needle is set to be elliptical, so that the winding linear speed of the winding needle can be kept relatively constant, further tension fluctuation suffered in the winding process of the battery cell is greatly reduced, the winding quality of the battery cell is ensured, and the winding speed of the winding needle can be greatly improved. The needle drawing mechanism can move the winding needle, when the winding needle needs to wind the battery core, the needle drawing mechanism transfers the winding needle to the outside of the panel of the frame, so that the winding needle winds the battery core, after the winding needle finishes winding the battery core, the first moving unit drives the first clamping unit to move towards the winding needle unit, and the driving components of the two first clamping mechanisms of the first clamping unit drive the blanking clamp to be inserted in the blanking groove of the winding needle, so that the two first clamping mechanisms clamp the battery core, and then the needle drawing mechanism withdraws the winding needle into the panel of the frame. The first moving unit drives the two first clamping mechanisms to reversely move to pull the battery cells Cheng Bianping, the second moving unit of the material moving unit drives the second clamping unit to take the battery cells which are pulled to be flat off from the first clamping unit and transfer the battery cells to a pressure bearing table of the forming assembly unit, and the first driving mechanism of the pressing unit of the forming unit drives the first pressing plate to press the battery cells which are pulled to be flat, so that the battery cells are formed. Therefore, the square battery core winding device has the advantages of high production efficiency, capability of improving the winding quality and the winding speed of the battery core, reducing tension fluctuation in the winding process of the winding needle and enabling the winding needle to run at high speed through the arrangement and the structural design of the square battery core winding device.
The driving assembly comprises a first air cylinder, a connecting seat, a second air cylinder and a pressing block, wherein the cylinder body of the first air cylinder is connected with the output end of the first motion unit, the connecting seat is connected with the driving end of the first air cylinder, the blanking clamp is arranged on the connecting seat, the cylinder body of the second air cylinder is arranged on the connecting seat, the pressing block is connected with the driving end of the second air cylinder, and the second air cylinder drives the pressing block to move relative to the blanking clamp.
From the above, the first cylinder is used for driving the second cylinder, the pressing block and the blanking clamp on the connecting seat to move along the axial direction of the winding needle, and the blanking clamp is inserted into the blanking groove of the winding needle, and the second cylinder and the pressing block are arranged, so that the second cylinder can drive the pressing block to move towards the blanking clamp, and the pressing block is pressed on the battery cell, so that the pressing block and the blanking clamp the battery cell.
The further scheme is that the number of the driving components and the blanking clips of each first clamping mechanism is two, the two driving components are oppositely arranged, and the two blanking clips are oppositely arranged. The Zu Dong component and the blanking clamp are of a lengthened structure, the blanking clamp is inserted into the inner side of the blanking groove, and the driving component drives the pressing block to clamp the battery cell.
From the above, set up two drive assembly and two unloading presss from both sides on every first mechanism of getting that presss from both sides, can improve the stability that the mechanism was got to the clamp of electric core to first clamp, set up two unloading presss from both sides simultaneously and can reduce the length of unloading clamp, when avoiding adopting single unloading clamp, need make the unloading clamp very long, and then reduce the removal stroke that the unit was got to first clamp, reduce square electric core coiling mechanism occupation space.
Still further, the first motion unit includes first fixing base, second actuating mechanism, first sliding seat, third actuating mechanism, second sliding seat and fourth actuating mechanism, first fixing base is connected with the frame, second actuating mechanism installs on first fixing base, first sliding seat is along the extending direction of first fixing base and first fixing base slidable connection, first sliding seat is connected with the drive end of second actuating mechanism, third actuating mechanism installs on first sliding seat, the second sliding seat is connected with first sliding seat slidable along the extending direction of first sliding seat, second sliding seat is connected with the drive end of third actuating mechanism, fourth actuating mechanism installs on second sliding seat, the drive end of fourth actuating mechanism is connected with two first clamping mechanisms respectively, and the fourth actuating mechanism drives two first clamping mechanisms and moves in opposite directions or the back along the extending direction of second sliding seat.
From the above, the first moving unit is used for driving the first clamping unit to move to the winding needle of the winding needle unit to take down the wound battery core on the winding needle, driving the two first clamping mechanisms of the first clamping unit to move back to perform preliminary shaping on the battery core, and then driving the first clamping unit to move to the material moving unit, so that the second clamping unit of the material moving unit can move the battery core on the first clamping unit to the forming unit to perform forming. After the steps are completed, the first moving unit drives the first clamping unit to reset, and the next operation is ready.
In another preferred scheme, the second motion unit comprises a second fixing seat, a fifth driving mechanism, a third sliding seat, a sixth driving mechanism, a fourth sliding seat, a seventh driving mechanism and a fifth sliding seat, wherein the second fixing seat is connected with the frame, the fifth driving mechanism is installed on the second fixing seat, the third sliding seat is slidably connected with the second fixing seat along the extending direction of the second fixing seat, the third sliding seat is connected with the driving end of the fifth driving mechanism, the sixth driving mechanism is installed on the third sliding seat, the fourth sliding seat is slidably connected with the third sliding seat along the extending direction of the third sliding seat, the driving end of the sixth driving mechanism is connected with the fourth sliding seat, the seventh driving mechanism is installed on the fourth sliding seat, the fifth sliding seat is slidably connected with the fourth sliding seat along the extending direction of the fourth sliding seat, the driving end of the seventh driving mechanism is connected with the fifth sliding seat, and the second clamping unit is installed on the fifth sliding seat.
From the above, the second moving unit is used for driving the second clamping unit to move to the first clamping unit of the blanking unit, so that the second clamping unit can move the battery core which is subjected to preliminary shaping on the first clamping unit to the pressure bearing table of the shaping unit, the pressing unit of the shaping unit can shape the battery core, and the battery core is moved out of the pressure bearing table after the battery core is shaped. After the steps are completed, the second moving unit drives the second clamping unit to reset, and the next operation is ready.
The second clamping mechanism comprises a thin air claw and a clamping jaw, wherein a cylinder body of the thin air claw is connected with a fifth sliding seat, the clamping jaw is connected with a driving end of the thin air claw, and the clamping jaw is arranged towards the bearing platform.
From the above, the thin cylinder is used for driving the clamping jaw to open or close, so as to realize clamping and placing of the battery cell.
In a further scheme, the number of the second clamping mechanisms is two, and the two second clamping mechanisms are arranged at two ends of the fifth sliding seat.
From the above, two second clamping mechanisms are arranged, so that when the first second clamping mechanism of the material moving unit moves the to-be-formed battery cell on the blanking unit to the bearing table, the second clamping mechanism moves the formed battery cell on the bearing table to the rear-stage equipment or the rear-stage station, and further the processing efficiency of the square battery cell winding device is improved.
The other preferable scheme is that the pressing unit further comprises a first supporting plate, the first supporting plate is fixedly connected with the frame, the first driving mechanism is installed on the first supporting plate, the bearing platform comprises a second supporting plate and a second pressing plate, the second supporting plate is fixedly connected with the frame, the second pressing plate is installed on the second supporting plate, and the second pressing plate and the first pressing plate are oppositely arranged.
As can be seen from the above, the first support plate is used to provide a mounting location for the first drive mechanism and the first platen, and the second support plate is used to provide a mounting location for the second platen.
Further, the forming unit further comprises a position detection sensor, the position detection sensor is connected with the first pressing plate, and the detection end of the position detection sensor is arranged towards the second pressing plate.
From the above, the position detection sensor can detect the pressing distance of the first pressing plate, so that the first pressing plate is prevented from excessively pressing the battery cell, the battery cell is prevented from being crushed, and the battery cell is protected.
The winding needle comprises a needle seat, a needle opening rod, a first inner needle, a first middle needle, a first outer needle, a second inner needle, a second middle needle, a second outer needle and a top needle seat, wherein the needle seat comprises a first body, a sliding seat and a first elastic piece, the first body is provided with a shaft sleeve towards the needle drawing mechanism in an extending mode, the shaft sleeve is rotatably connected with the needle drawing mechanism around the axis of the first body, the first body is provided with a seventh sliding rail along the radial extension direction of the shaft sleeve, the sliding seat is connected with the seventh sliding rail in a sliding mode along the extension direction of the seventh sliding rail, the first elastic piece is connected between the first body and the sliding seat, the sliding seat is provided with a stop block, the shaft sleeve is sleeved on the needle opening rod and is connected with the shaft sleeve in a sliding mode along the axis of the first inner needle, the first middle needle is fixedly installed on the first body, the second outer needle is fixedly installed on the first middle needle, the second inner needle is fixedly installed on the first body, the second middle needle is fixedly installed on the second outer needle, the second middle needle is fixedly installed on the second body, the second outer needle is fixedly installed on the second body, the second outer needle is connected with the second outer needle seat and the top needle seat in a sliding mode, the second outer needle is arranged on the second outer needle seat and the second outer needle seat is fixedly installed on the second outer needle seat and the top needle seat.
From the above, the first outer needle and the second outer needle are used for shaping the coiled battery core, the first inner needle and the second inner needle are used for clamping or loosening the membrane of the coiled battery core, the first inner needle and the second inner needle are arranged on the sliding seat, the first middle needle and the second inner needle are arranged on the first body, when the needle opening rod moves to the stop block of the sliding seat, the needle opening rod can push the sliding seat to move through the stop block, so that the first inner needle and the second inner needle are separated, the membrane is conveniently inserted into the winding needle, and after the membrane is inserted, the needle opening rod is reset, the sliding seat is reset under the action of the first elastic piece, so that the first inner needle and the second inner needle are attached again, and the membrane is clamped, so that the battery core is coiled. The ejector pin seat is used for fixing a first outer needle and a second outer needle in the winding process, and two outer needle fixing blocks are arranged, so that the distance between the first outer needle and the second outer needle can be adjusted according to the widths of different winding needle assemblies, the winding needles can wind battery cells of different sizes, the application range of the winding needles is improved, the trouble that the winding needles need to be replaced when the battery cells of different sizes are wound is avoided, and the working efficiency is improved.
Drawings
Fig. 1 is a partial block diagram of an embodiment of a square cell winding apparatus of the present invention.
Fig. 2 is a block diagram of a winding pin of an embodiment of the square cell winding device of the present invention.
Fig. 3 is a block diagram of an embodiment of a square cell winding device of the present invention with an omitted part of the winding pin.
Fig. 4 is a structural view of the needle holder of the winding needle of the square cell winding device embodiment of the present invention.
Fig. 5 is a structural view of the top hub of the winding pin of the square cell winding device embodiment of the present invention.
Fig. 6 is a cross-sectional view of a winding needle of an embodiment of a square cell winding device of the present invention.
Fig. 7 is a block diagram of a blanking unit of an embodiment of the square cell winding device of the present invention.
Fig. 8 is a block diagram of a material moving unit of an embodiment of the square cell winding device of the present invention.
Fig. 9 is a block diagram of a pressing unit of an embodiment of the square cell winding device of the present invention.
The invention is further described below with reference to the drawings and examples.
100-square battery core winding device;
101-a frame;
102-panel;
1-a needle winding unit;
11-winding needle;
110-blanking groove;
111-needle stand;
1111-a first body;
1112-shaft sleeve;
1113-seventh slide rail;
1114—a slider;
1115—a stop;
112-an open needle bar;
113-a first inner needle;
114-a first middle needle;
115-a first outer needle;
116-a second inner needle;
117-a second middle needle;
118-a second outer needle;
119-a needle holder;
1191-a first body;
1192-a first pin;
1193-a second pin;
1195-outer needle securing blocks;
1196-balancing weight;
12-a needle drawing mechanism;
2-a blanking unit;
21-a first movement unit;
211-a first fixing seat;
212-a second drive mechanism;
213-a first slide mount;
214-a third drive mechanism;
215-a second slide mount;
216-a fourth drive mechanism;
22-a first gripping unit;
220-a first gripping mechanism;
221-a drive assembly;
2211—a first cylinder;
2212-connecting base;
2213—a second cylinder;
2214-briquetting;
222-blanking clamp;
223-connecting seat;
3-a material moving unit;
31-a second motion unit;
311-a second fixing seat;
312-a fifth drive mechanism;
313-a third slide mount;
314-sixth drive mechanism;
315-fourth sliding seat;
316-seventh drive mechanism;
317-fifth slide mount;
32-a second gripping unit;
321-a second gripping mechanism;
3211-a thin cylinder;
3212-clamping jaw;
322-connecting seats;
4-a forming unit;
41-a pressing unit;
411-a first drive mechanism;
412-a first platen;
413-a first support plate;
42-bearing table.
Detailed Description
Referring to fig. 1, a square cell winding device 100 includes a frame 101, a winding needle unit 1, a discharging unit 2, a moving unit 3, and a forming unit 4.
Referring to fig. 2 to 6, the winding needle unit 1 includes a winding needle 11 and a needle drawing mechanism 12, wherein the winding needle 11 is arranged in an elliptical shape, two blanking grooves 110 extending along the axial direction of the winding needle 11 are arranged in the circumferential direction of the winding needle 11, and the needle drawing mechanism 12 drives the winding needle 11 to reciprocate along the normal direction of the panel 102 of the frame 101, so as to push the winding needle 11 out of the panel 102 of the frame 101 or draw back the winding needle 11 into the panel 102 of the frame 101.
Specifically, the winding needle 11 includes a needle holder 111, an opening rod 112, a first inner needle 113, a first middle needle 114, a first outer needle 115, a second inner needle 116, a second middle needle 117, a second outer needle 118, and a tip needle holder 119, the needle holder 111 includes a first body 1111, a slider 1114, and a first elastic member, the first body 1111 is extendingly provided with a boss 1112 toward the needle drawing mechanism 12, the boss 1112 is rotatably connected with the needle drawing mechanism 12 about its own axis, the first body 1111 is extendingly provided with a seventh slide rail 1113 in a radial direction of the boss 1112, the slider 1114 is slidably connected with the seventh slide rail 1113 in an extension direction of the seventh slide rail 1113, the first elastic member is connected between the first body 1111 and the slider 1114, and the first elastic member is used for resetting the sliding of the slider 114.
The slide 1114 is provided with a stop 1115, the shaft sleeve 1112 is sleeved on the needle opening rod 112, the needle opening rod 112 is slidably connected with the shaft sleeve 1112 along the axis of the shaft sleeve 112, the first inner needle 113 is fixedly arranged on the slide 1114, the first middle needle 114 is fixedly arranged on the first body 1111, the first outer needle 115 is fixedly arranged on the first middle needle 114, the second inner needle 116 is fixedly arranged on the first body 1111, the second middle needle 117 is fixedly arranged on the slide 1114, the second outer needle 118 is fixedly arranged on the second middle needle 117, the first outer needle 115 and the second outer needle 118 are in an oval shape, the two discharging grooves 110 are respectively arranged on the first outer needle 115 and the second outer needle 118, and the two discharging grooves 110 are oppositely arranged.
The top needle stand 119 comprises a second body 1191, a first pin shaft 1192, a second pin shaft 1193, a second elastic piece, two oppositely arranged outer needle fixing blocks 1195 and a balancing weight 1196, wherein the balancing weight 1196 is fixedly connected with the second body 1191, the two outer needle fixing blocks 1195 are both installed on the second body 1191, the first pin shaft 1192 is fixedly connected with the second body 1191, the first pin shaft 1192 extends along the width direction of the top needle stand 119, the second pin shaft 1193 is slidably connected with the second body 1191 along the length direction L3 of the second body 1191, the second pin shaft 1193 is arranged in parallel with the first pin shaft 1192, and the first pin shaft 1192 and the second pin shaft 1193 are used for fixing the first outer needle 115 and the second outer needle 118. The second elastic element is connected between the second body 1191 and the second pin 1193, and is used for resetting the sliding of the second pin 1193, and the top needle seat 119 can move along the axial direction of the winding needle 11 and is sleeved on the ends of the first outer needle 115 and the second outer needle 118.
It can be seen that the first outer needle 115 and the second outer needle 118 are used for shaping the wound battery cell, the first inner needle 113 and the second inner needle 116 are used for clamping or loosening the membrane of the wound battery cell, the first inner needle 113 and the second middle needle 117 are mounted on the sliding seat 1114, the first middle needle 114 and the second inner needle 116 are mounted on the first body, when the open needle 112 moves to the stop 1115 of the sliding seat 1114, the open needle 112 can push the sliding seat 1114 to move through the stop 1115, the first inner needle 113 and the second inner needle 116 are further separated, the membrane is conveniently inserted into the winding needle, and after the membrane insertion is completed, the open needle 112 is reset, the sliding seat 1114 is reset under the action of the first elasticity and the love 1116, the first inner needle 113 and the second inner needle 116 are further attached again, and the membrane is clamped, so that the battery cell is wound. The ejector pin seat 119 is used for fixing the first outer pin 115 and the second outer pin 118 in the winding process, and two outer pin fixing blocks 1195 are arranged, so that the distance between the first outer pin 115 and the second outer pin 118 can be adjusted according to the widths of different winding pin assemblies, the winding pins 11 can wind the battery cores with different sizes, the application range of the winding pins 11 is improved, the trouble that the winding pins 11 need to be replaced when the battery cores with different sizes are wound is avoided, and the working efficiency is improved.
Referring to fig. 7, the discharging unit 2 includes a first moving unit 21 and a first clamping unit 22, the first clamping unit 22 includes two first clamping mechanisms 220 disposed opposite to each other, the first moving unit 21 drives the two first clamping mechanisms 220 to move toward or away from each other, and each first clamping mechanism 220 includes a driving assembly 221 and a discharging clamp 222, the discharging clamp 222 is disposed to extend along an axial direction of the winding needle 11, the driving assembly 221 drives the discharging clamp 222 to move along the axial direction of the winding needle 11, and one discharging clamp 222 of one clamping mechanism 220 is disposed to match the discharging groove 110 of one outer needle 111.
Specifically, the first moving unit 21 includes a first fixing base 211, a second driving mechanism 212, a first sliding base 213, a third driving mechanism 214, a second sliding base 215, and a fourth driving mechanism 216, the first fixing base 211 is connected to the frame 101, the second driving mechanism 212 is mounted on the first fixing base 211, the first sliding base 213 is slidably connected to the first fixing base 211 along an extending direction of the first fixing base 211, the first sliding base 213 is connected to a driving end of the second driving mechanism 214, the third driving mechanism 214 is mounted on the first sliding base 213, the second sliding base 215 is slidably connected to the first sliding base 213 along an extending direction of the first sliding base 213, the second sliding base 215 is connected to a driving end of the third driving mechanism 214, the fourth driving mechanism 216 is mounted on the second sliding base 215, the driving end of the fourth driving mechanism 216 is connected to the two first clamping mechanisms 220, and the fourth driving mechanism 216 drives the two first clamping mechanisms 220 to move in opposite directions or back to each other along the extending direction of the second sliding base 215.
Each first gripping mechanism 220 further comprises a connecting seat 223, the connecting seat 223 being connected to the fourth driving mechanism 216. The driving assembly 221 comprises a first cylinder 2211, a connecting seat 2212, a second cylinder 2213 and a pressing block 2214, wherein the first cylinder 2211 is fixedly connected with the connecting seat 223, the connecting seat 2212 is connected with the driving end of the first cylinder 2211, the blanking clamp 222 is fixedly installed on the connecting seat 2212, a cylinder body of the second cylinder 2213 is installed on the connecting seat 2212, the pressing block 2214 is connected with the driving end of the second cylinder 2213, and the second cylinder 2213 drives the pressing block 2214 to move towards the blanking clamp 222.
The first cylinder 2211 is used for driving the second cylinder 2213, the pressing block 2214 and the blanking clamp 222 of the connecting seat 2212 to move along the axial direction of the winding needle 11, and enabling the blanking clamp 222 to be inserted into the blanking groove 110 of the winding needle 11, and the second cylinder 2213 and the pressing block 2214 are arranged, so that the second cylinder 2213 can drive the pressing block 2214 to move towards the blanking clamp 222, and the pressing block 2214 is pressed on the battery cell, and the pressing block 2214 and the blanking clamp 222 clamp the battery cell. Preferably, the number of the driving components 221 and the blanking clips 222 of each first gripping mechanism 220 is two, and the two driving components 221 are oppositely arranged, and the two blanking clips 222 are oppositely arranged.
It can be seen that the first moving unit 21 is configured to drive the first clamping unit 22 to move to the winding needle 11 of the winding needle unit 1 to take down the wound battery core on the winding needle 11, drive the two first clamping mechanisms 220 of the first clamping unit 22 to move back to perform preliminary shaping on the battery core, and then drive the first clamping unit 22 to move toward the material moving unit 3, so that the second clamping unit 32 of the material moving unit 3 can move the battery core on the first clamping unit 22 to the forming unit 4 for forming. And after the above steps are completed, the first moving unit 21 drives the first gripping unit 22 to reset, and prepares for the next operation. And set up two drive assembly 221 and two unloading presss from both sides 222 on every first mechanism 220 that get, can improve the stability that first mechanism 220 got the clamp of electric core, set up two unloading presss from both sides 222 simultaneously and can reduce the length of unloading presss from both sides 222, avoid adopting single unloading presss from both sides when, need make the unloading presss from both sides very long, and then reduce the removal stroke that first unit 22 was got to the reduction, reduce square electric core coiling mechanism 100 occupation space.
Referring to fig. 8, the material moving unit 3 includes a second moving unit 31 and a second gripping unit 32, the second gripping unit 32 includes a second gripping mechanism 321, and the first moving unit 21 drives the first gripping unit 22 to move between the winding needle unit 1 and the second gripping mechanism 321.
Specifically, the second moving unit 31 includes a second fixing base 311, a fifth driving mechanism 312, a third sliding base 313, a sixth driving mechanism 314, a fourth sliding base 315, a seventh driving mechanism 316, and a fifth sliding base 317, the second fixing base 311 is connected to the frame 101, the fifth driving mechanism 312 is mounted on the second fixing base 311, the third sliding base 313 is slidably connected to the second fixing base 311 along an extending direction of the second fixing base 311, the third sliding base 313 is connected to a driving end of the fifth driving mechanism 312, the sixth driving mechanism 314 is mounted on the third sliding base 313, the fourth sliding base 315 is slidably connected to the third sliding base 313 along an extending direction of the third sliding base 313, a driving end of the sixth driving mechanism 314 is connected to the fourth sliding base 315, the seventh driving mechanism 316 is mounted on the fourth sliding base 315, the fifth sliding base 317 is slidably connected to the fourth sliding base 315 along an extending direction of the fourth sliding base 315, the seventh driving mechanism 316 is connected to the fifth sliding base 317, and the second clamping unit 32 is mounted on the fifth sliding base 317.
Specifically, the second clamping mechanism 321 includes a thin air claw 3211 and a clamping jaw 3212, a cylinder of the thin air claw 3211 is fixedly connected with the fifth sliding seat 317, the clamping jaw 3212 is connected with a driving end of the thin air claw 3211, and the clamping jaw 3212 is disposed towards the pressure-bearing platform 42 of the forming unit 4. Preferably, the number of the second clamping mechanisms 321 is two, and the two second clamping mechanisms 321 are mounted at both ends of the fifth sliding seat 317.
It can be seen that the second moving unit 31 is configured to drive the second clamping unit 32 to move to the first clamping unit 22 of the blanking unit 2, so that the second clamping unit 32 can move the initially shaped battery cell on the first clamping unit 22 to the pressure-bearing table 42 of the forming unit 4, so that the pressing unit 41 of the forming unit 4 forms the battery cell, and after the battery cell is formed, the battery cell is removed from the pressure-bearing table. And after the above steps are completed, the second moving unit 31 drives the second gripping unit 32 to reset, ready for the next operation. The thin air cylinder 3211 is used for driving the clamping jaw 3212 to open or close so as to clamp and place the battery cell. And two second clamping mechanisms 321 are provided, so that when the first second clamping mechanism 321 of the material moving unit 3 moves the to-be-formed battery cell on the blanking unit 2 to the bearing table 42 of the forming unit 4, the second clamping mechanism 321 moves the formed battery cell on the bearing table 42 of the forming unit 4 to the rear-stage equipment or the rear-stage station, thereby improving the processing efficiency of the square battery cell winding device 100.
Referring to fig. 9, the molding unit 4 includes a pressing unit 41, a pressure-receiving table 42, and a position detection sensor 43, the pressing unit 41 includes a first driving mechanism 411 and a first pressing plate 412, the second moving unit 31 drives the second gripping unit 32 to move between the first gripping unit 22 and the pressure-receiving table 42, and the second gripping mechanism 321 feeds the pressure-receiving table 42, and the first driving mechanism 411 drives the first pressing plate 42 to move relative to the pressure-receiving table.
Specifically, the pressing unit 41 further includes a first support plate 413, the first support plate 413 is fixedly connected to the frame 101, and the first driving mechanism 411 is mounted on the first support plate 413. Preferably, the first driving mechanism 411 includes an air cylinder, a cylinder of which is fixedly installed on the first support plate 413, and a driving end of the air cylinder is connected with the first pressing plate 412.
The pressure bearing platform 42 includes a second support plate 421 and a second pressing plate 422, the second support plate 421 is fixedly connected with the frame 101, the second pressing plate 422 is mounted on the second support plate 421, and the second pressing plate 422 is disposed opposite to the first pressing plate 412. The first support plate 413 is used to provide a mounting location for the first drive mechanism 411 and the first platen 412, and the second support plate 421 is used to provide a mounting location for the second platen 422.
The position detection sensor 43 is connected to the first platen 412, and a detection end of the position detection sensor 43 is disposed toward the second platen 422. The position detection sensor 43 can detect the pressing distance of the first pressing plate 412, so that the first pressing plate 412 is prevented from excessively pressing the battery cell, the battery cell is prevented from being crushed, and the battery cell is protected.
The square cell winding device works as follows:
when the battery core needs to be wound, firstly, the needle withdrawing mechanism 12 of the winding needle unit 1 drives the needle opening rod 112 of the winding needle 11 to move along the axial direction of the winding needle 11, so that the end part of the needle opening rod 112 is abutted with the stop 1115 of the sliding seat 1114 and pushes the sliding seat 1114 to slide along the seventh sliding rail 1113 through the stop 1115, when the sliding seat 1114 slides, the first elastic piece is compressed, at this time, the sliding seat 1114 drives the first inner needle 113 and the second middle needle 117 to slide, the first inner needle 113 and the second inner needle 116 are in an open state, and the width between the first outer needle 115 and the second outer needle 118 is reduced. Next, the septum to be wound is inserted into the gap between the first and second inner needles 113 and 116. Then, the pumping device 12 drives the needle opening rod 112 to reset, so that the sliding seat 1114 resets under the elastic potential energy of the first elastic element, the sliding seat 1114 resets along the seventh sliding rail 1113, and drives the first inner needle 113 and the second middle needle 117 to reset, so that the first inner needle 113 and the second inner needle 116 are in a closed state, the diaphragm is clamped, and the battery cell is ready to be wound. After the first inner needle 113 and the second inner needle 116 are reset and closed, the control system of the square cell winding device 100 controls the top needle seat 119 to fix the first outer needle 115 and the second outer needle 118, so that the first outer needle 115 and the second outer needle 118 are prevented from being separated in the winding process, and further, the separation of the membrane from the clamping of the winding needle 11 in the winding process is avoided.
Then, the winding needle 11 winds the battery cell, and encapsulates the battery cell by combining with other mechanisms of the square battery cell winding device 100, thereby completing the winding of the battery cell. The winding needle unit 1 preferably has three processing stations, each of which comprises a winding needle 11 and a needle extraction mechanism 12. When the winding needle 11 positioned at the first station completes winding and packaging of the battery cell, the winding needle unit 1 drives the winding needle 11 at the first station to move to the second station, the winding needle 11 at the second station moves to the third station, and the winding needle 11 at the third station moves to the first station.
After the winding needle 11 moves to the second station, the second driving mechanism 212 of the first moving unit 21 of the blanking unit 2 drives the first sliding seat 213 to move below the winding needle 11 of the second station, and then the third driving mechanism 214 drives the second sliding seat 215 to move vertically upwards, so that the two first gripping mechanisms 220 of the first gripping unit 22 are located at two sides of the winding needle 11. Then, the fourth driving mechanism drives the two first clamping mechanisms 220 to move towards each other, so that the blanking clips 222 of the first clamping mechanisms 220 are aligned with the corresponding blanking slots 110 on the winding needle 11, and then the first cylinder 2211 of the driving component 221 of each first clamping mechanism 220 drives the connecting seat 2212 to move towards the winding needle 11, so that the blanking clips 222 on the connecting seat 2212 are inserted into the corresponding blanking slots 110 on the winding needle 11. Then, the second cylinder 2213 of the driving assembly 221 drives the press block 2214 to press the battery cell, so that the blanking clamp 222 and the press block 2214 clamp the battery cell.
Then, the needle withdrawing mechanism 12 of the second station drives the needle opening rod 112 of the needle 11 to move along the axial direction of the needle 11 again, so that the end of the needle opening rod 112 abuts against the stop 1115 of the slide base 1114 and pushes the slide base 1114 to slide along the seventh slide rail 1113 through the stop 1115, when the slide base 1114 slides, the first elastic member is compressed, at this time, the slide base 1114 drives the first inner needle 113 and the second middle needle 117 to slide, so that the first inner needle 113 and the second inner needle 116 are in an opened state, and the width between the first outer needle 115 and the second outer needle 118 is reduced. At this time, the winding pin 11 releases the clamping of the battery cell. Then, the needle extracting mechanism 12 drives the winding needle 11 to recover, and moves the winding needle 11 into the panel 102 of the chassis 100 to prepare for the next operation. Then, the fourth driving mechanism 216 drives the two first clamping mechanisms 220 to move oppositely, so that the battery cells are flattened, and the preliminary shaping of the battery cells is completed. Then, the first moving unit 21 drives the first gripping unit 22 to move toward the translating unit 3.
Then, the fifth driving mechanism 312 of the second moving unit 31 of the moving unit 3 drives the third sliding seat 313 to move below the pressing table 42, then the sixth driving mechanism 314 drives the fourth sliding seat 315 to move along the horizontal direction and close to the pressing table 42, and meanwhile, the seventh driving mechanism 316 drives the fifth sliding seat 317 to move along the vertical direction, so that the clamping jaw 3212 of the first second clamping mechanism 321 of the second clamping unit 32 on the fifth sliding seat 317 moves to the second pressing plate 422 of the pressing table 42, and the thin cylinder 3211 drives the clamping jaw 3212 to clamp the formed cell on the second pressing plate 422.
Then, the sixth driving mechanism 315 drives the fourth sliding seat 315 to reset, and the fifth driving mechanism 312 drives the third sliding seat 313 to move toward the feeding unit 2. Then, the sixth driving mechanism 315 drives the fourth sliding seat 315 to move along the horizontal direction again, and the seventh driving mechanism 316 adjusts the position of the fifth sliding seat 317, so that the clamping jaw 3212 of the second clamping mechanism 321 of the second clamping unit 32 clamps the initially shaped battery cell on the first clamping unit 21. After the second clamping mechanism 321 removes the preliminarily shaped cell on the first clamping unit 21, the blanking unit 2 is reset and ready for the next operation.
Next, the fifth driving mechanism 312 adjusts the third sliding seat 313, the sixth driving mechanism 314 adjusts the fourth sliding seat 315, and the seventh driving mechanism 316 adjusts the fifth sliding seat 317 such that the clamping jaw 3212 of the second clamping mechanism 321 on the fifth sliding seat 317 is located at the second pressing plate 422, and then the thin air cylinder 3211 drives the clamping jaw 3212 to place the electrical core on the second pressing plate. Meanwhile, the thin cylinder 3211 of the first second clamping mechanism 321 on the fifth sliding seat 317 drives the clamping jaw 3212 to place the formed battery cell on the later mechanism or the later station, and then the material moving unit 3 resets to prepare for the next operation.
After the second clamping mechanism 321 of the translation unit 3 moves the initially shaped battery cell onto the second pressing plate 422, the first driving mechanism 411 of the pressing unit 41 of the forming unit 4 drives the first pressing plate 412 to move toward the second pressing plate 422, so as to perform forming operation on the battery cell on the second pressing plate 422, and after finishing shaping processing of the battery cell, the forming unit 4 resets and prepares for the next operation. And the shaped cell is left on the second pressing plate 422 to wait for the unloading of the second gripping unit 32 of the material moving unit 3.
According to the scheme, the winding needle is arranged to be elliptical, so that the winding linear speed of the winding needle can be kept relatively constant, tension fluctuation suffered in the winding process of the battery cell is greatly reduced, the winding quality of the battery cell is ensured, and the winding speed of the winding needle can be greatly improved. The needle drawing mechanism can move the winding needle, so that when the winding needle needs to wind the battery cell, the needle drawing mechanism transfers the winding needle to the outside of the panel of the frame, the winding needle is used for winding the battery cell, after the winding needle finishes winding the battery cell, the first moving unit drives the first clamping unit to move towards the winding needle unit, and the driving assemblies of the two first clamping mechanisms of the first clamping unit drive the blanking clamp to be inserted in the blanking groove of the winding needle, so that the two first clamping mechanisms clamp the battery cell, and then the needle drawing mechanism withdraws the battery cell back into the panel of the frame. The first moving unit drives the two first clamping mechanisms to reversely move to pull the battery cells Cheng Bianping, the second moving unit of the material moving unit drives the second clamping unit to take the battery cells which are pulled to be flat off from the first clamping unit and transfer the battery cells to a pressure bearing table of the forming assembly unit, and the first driving mechanism of the pressing unit of the forming unit drives the first pressing plate to press the battery cells which are pulled to be flat, so that the battery cells are formed. The square battery core winding device has the advantages of high production efficiency, capability of improving the winding quality and the winding speed of the battery core, reduction of tension fluctuation in the winding process of the winding needle and high-speed operation of the winding needle through the arrangement and the structural design of the square battery core winding device.
Finally, it should be emphasized that the foregoing description is merely illustrative of the preferred embodiments of the invention, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the invention, and any such modifications, equivalents, improvements, etc. are intended to be included within the scope of the invention.
Claims (10)
1. Square electric core coiling mechanism, including the frame, its characterized in that still includes:
the winding needle unit comprises a winding needle and a needle drawing mechanism, wherein the winding needle is arranged in an oval shape, two blanking grooves extending along the axial direction of the winding needle are arranged in the circumferential direction of the winding needle, and the needle drawing mechanism drives the winding needle to reciprocate along the normal direction of a panel of the frame;
the blanking unit comprises a first moving unit and a first clamping unit, the first clamping unit comprises two first clamping mechanisms which are oppositely arranged, the first moving unit drives the two first clamping mechanisms to move oppositely or reversely, each first clamping mechanism comprises at least one driving component and at least one blanking clamp, the blanking clamps are arranged in an extending mode along the axial direction of the winding needle, the driving component drives the blanking clamps to move along the axial direction of the winding needle, and the blanking clamps of the first clamping mechanisms are arranged in a matched mode with one blanking groove;
The material moving unit comprises a second moving unit and a second clamping unit, the second clamping unit comprises a second clamping mechanism, and the first moving unit also drives the first clamping unit to reciprocate between the needle winding unit and the second clamping mechanism;
the forming unit comprises a bearing table and a pressing unit, the pressing unit comprises a first driving mechanism and a first pressing plate, the second moving unit drives the second clamping unit to move between the first clamping unit and the bearing table, the second clamping mechanism feeds the bearing table, the first driving mechanism drives the first pressing plate to move relative to the bearing table, and the needle winding unit, the blanking unit, the material moving unit and the forming unit are connected with the frame.
2. The square cell winding apparatus of claim 1, wherein:
the drive assembly includes:
the cylinder body of the first cylinder is connected with the output end of the first motion unit;
the connecting seat is connected with the driving end of the first cylinder, and the blanking clamp is arranged on the connecting seat;
The cylinder body of the second cylinder is arranged on the connecting seat;
the pressing block is connected with the driving end of the second air cylinder, and the second air cylinder drives the pressing block to move relative to the blanking clamp.
3. The square cell winding apparatus of claim 2, wherein:
the number of the driving assemblies and the blanking clips of each first clamping mechanism is two, the two driving assemblies are oppositely arranged, and the two blanking clips are oppositely arranged.
4. A square cell winding apparatus according to claim 3, wherein:
the first moving unit includes:
the first fixing seat is connected with the rack;
the second driving mechanism is arranged on the first fixing seat;
the first sliding seat is connected with the first fixing seat in a sliding manner along the extending direction of the first fixing seat, and the first sliding seat is connected with the driving end of the second driving mechanism;
the third driving mechanism is arranged on the first sliding seat;
the second sliding seat is connected with the first sliding seat in a sliding manner along the extending direction of the first sliding seat, and is connected with the driving end of the third driving mechanism;
The fourth driving mechanism is installed on the second sliding seat, the driving ends of the fourth driving mechanism are respectively connected with the two first clamping mechanisms, and the fourth driving mechanism drives the two first clamping mechanisms to move in opposite directions or opposite directions along the extending direction of the second sliding seat.
5. The square cell winding apparatus of claim 1, wherein:
the second moving unit includes:
the second fixing seat is connected with the rack;
the fifth driving mechanism is arranged on the second fixing seat;
the third sliding seat is connected with the second fixed seat in a sliding manner along the extending direction of the second fixed seat, and is connected with the driving end of the fifth driving mechanism;
a sixth driving mechanism mounted on the third sliding seat;
the fourth sliding seat is slidably connected with the third sliding seat along the extending direction of the third sliding seat, and the driving end of the sixth driving mechanism is connected with the fourth sliding seat;
a seventh driving mechanism mounted on the fourth slide mount;
The fifth sliding seat is slidably connected with the fourth sliding seat along the extending direction of the fourth sliding seat, the driving end of the seventh driving mechanism is connected with the fifth sliding seat, and the second clamping unit is installed on the fifth sliding seat.
6. The square cell winding apparatus of claim 5, wherein:
the second gripping mechanism includes:
the cylinder body of the thin gas claw is connected with the fifth sliding seat;
the clamping jaw is connected with the driving end of the thin air claw, and the clamping jaw faces towards the pressure-bearing table.
7. The square cell winding apparatus of claim 6, wherein:
the number of the second clamping mechanisms is two, and the two second clamping mechanisms are arranged at two ends of the fifth sliding seat.
8. The square cell winding apparatus of claim 1, wherein:
the pressing unit further comprises a first supporting plate, the first supporting plate is fixedly connected with the rack, and the first driving mechanism is installed on the first supporting plate;
the pressure-bearing platform comprises a second supporting plate and a second pressing plate, wherein the second supporting plate is fixedly connected with the frame, the second pressing plate is installed on the second supporting plate, and the second pressing plate and the first pressing plate are oppositely arranged.
9. The square cell winding apparatus of claim 8, wherein:
the forming unit further comprises a position detection sensor, the position detection sensor is connected with the first pressing plate, and the detection end of the position detection sensor is arranged towards the second pressing plate.
10. The square cell winding device according to any one of claims 1 to 9, wherein:
the winding needle comprises:
the needle stand comprises a first body, a sliding seat and a first elastic piece, wherein the first body is provided with a shaft sleeve in an extending way towards the needle drawing mechanism, the shaft sleeve is rotatably connected with the needle drawing mechanism around the axis of the shaft sleeve, the first body is provided with a seventh sliding rail in a radial extending way of the shaft sleeve, the sliding seat is slidably connected with the seventh sliding rail in the extending direction of the seventh sliding rail, the first elastic piece is connected between the first body and the sliding seat, and the sliding seat is provided with a stop block;
the needle opening rod is sleeved on the shaft sleeve and is connected with the shaft sleeve in a sliding manner along the axis of the needle opening rod;
the first inner needle is fixedly arranged on the sliding seat;
A first middle needle fixedly mounted on the first body;
a first outer needle fixedly mounted on the first middle needle;
the second inner needle is fixedly arranged on the first body;
the second middle needle is fixedly arranged on the sliding seat;
the second outer needle is fixedly arranged on the second middle needle, the first outer needle and the second outer needle are in an elliptical shape, and the two discharging grooves are respectively arranged on the first outer needle and the second outer needle;
the ejector pin seat comprises a second body, a first pin shaft, a second elastic piece and two oppositely arranged outer pin fixing blocks, wherein the two outer pin fixing blocks are all installed on the second body, the first pin shaft is fixedly connected with the second body, the second pin shaft is connected with the second body in a sliding manner along the length direction of the second body, the second elastic piece is connected between the second body and the second pin shaft, and the ejector pin seat can move along the axial direction of the winding pin and is sleeved on the end parts of the first outer pin and the second outer pin.
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| CN201711241350.7A CN108054432B (en) | 2017-11-30 | 2017-11-30 | Square cell winding device |
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| CN201711241350.7A CN108054432B (en) | 2017-11-30 | 2017-11-30 | Square cell winding device |
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| CN108054432B true CN108054432B (en) | 2023-09-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108808116B (en) * | 2018-06-04 | 2024-02-27 | 深圳市诚捷智能装备股份有限公司 | Square electric core winding device and square electric core winding equipment |
| CN108899570B (en) * | 2018-06-11 | 2024-02-27 | 深圳市诚捷智能装备股份有限公司 | Battery cell winding mechanism and battery cell winding equipment |
| CN108717980A (en) * | 2018-07-06 | 2018-10-30 | 珠海华冠科技股份有限公司 | Winding head device and its working method, cylindrical battery core film-making up- coiler |
| CN109980298B (en) * | 2019-04-01 | 2024-06-04 | 无锡先导智能装备股份有限公司 | Rolling needle assembly |
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| US4982482A (en) * | 1989-02-24 | 1991-01-08 | Caltec International, Inc. | Method for the manufacture of lead-acid batteries and an associated apparatus and associated lead-acid battery |
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