Pole group manufacturing equipment and pole group manufacturing method
By introducing multi-electrode parallel fabrication and diaphragm composite technology into the electrode assembly manufacturing equipment, the problems of low production efficiency and high cost of existing equipment have been solved, resulting in a significant improvement in electrode assembly production efficiency and a reduction in cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SVOLT ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2026-02-12
- Publication Date
- 2026-05-08
AI Technical Summary
Existing thermal composite lamination and 'Z' lamination mass production equipment has low production efficiency and high cost. Furthermore, improving equipment efficiency faces challenges such as high technical difficulty, high cost, immature key mechanism technology, and difficulty in debugging.
The electrode assembly manufacturing equipment includes first and second electrode preparation mechanisms, coating mechanism, stacking mechanism and hot pressing mechanism. By simultaneously producing multiple electrode and diaphragm composites, a batch processing mode is achieved, which improves electrode preparation efficiency and electrode assembly production efficiency.
It significantly improved the production efficiency of electrode assembly equipment, resulting in a multiple increase in output, reduced production costs, and eliminated the need to increase the speed of the processing flow.
Smart Images
Figure CN122000412A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, and in particular to an electrode assembly manufacturing apparatus and a method for manufacturing electrode assemblies. Background Technology
[0002] Existing thermal lamination and 'Z' stacking mass production equipment typically involves first cutting the positive and negative electrode strips into sheets, then conveying them to the lamination area via a belt conveyor. A PNP robotic arm then handles and alternately stacks the positive and negative electrode sheets to form an electrode assembly. After hot pressing and hardening, QR codes are affixed and the sheets are unloaded. In the 'Z' stacking equipment, a continuous 'Z'-shaped separator strip separates the positive and negative electrode sheets at the lamination point. Thermal lamination equipment, on the other hand, cuts the negative electrode strip into sheets and laminates it with the upper and lower separators to form a negative electrode composite unit strip. This negative electrode composite unit strip is then thermally cut through the separator to form a separator-negative electrode-separator negative electrode composite unit. This negative electrode composite unit is then stacked with the positive electrode sheet to form an electrode assembly. This process has the following drawbacks: 1) The equipment has low production efficiency and higher production costs compared to winding. 2) Based on the existing solutions, improving equipment efficiency by increasing the speed of mechanical operation presents problems such as high technical difficulty, high cost, immature technology of key mechanisms, and difficulty in debugging. Summary of the Invention
[0003] The purpose of this application is to provide an electrode assembly manufacturing equipment and method to solve, to a certain extent, the technical problems of low production efficiency, high cost, and difficulty in improving equipment efficiency of existing stacking equipment.
[0004] This application provides an apparatus for fabricating electrode groups, comprising: The first electrode manufacturing mechanism includes at least two first feeding components, all of which are arranged sequentially along a first direction. The first feeding components are used to manufacture first electrode sheets, and the first electrode sheets manufactured by all the first feeding components are spaced apart along the first direction. The second electrode making mechanism includes at least two second feeding components. All the second feeding components are arranged sequentially along the first direction. The second feeding components are used to make a second electrode with a polarity opposite to that of the first electrode. The second electrode made by all the second feeding components are spaced apart along the first direction. A coating mechanism is provided on the side of the second electrode preparation mechanism, and the coating mechanism is capable of laying diaphragm material strips on both sides of all the second electrode sheets.
[0005] In the above technical solution, each of the first feeding components further includes: The first roller is provided with a first electrode roll for making the first electrode sheet; the first rollers of all the first feeding components are arranged sequentially along the first direction, and the axes of all the first rollers are collinear or parallel. The first cutter, each of the first rollers can feed the first electrode roll to the first cutter, and the first electrode roll can be cut into the first electrode sheet by the first cutter when it passes through the first cutter; Each of the second feeding components includes: The second roller is provided with a second electrode roll for making the second electrode sheet; all the second rollers of the second feeding components are arranged sequentially along the first direction, and the axes of all the second rollers are collinear or parallel. The second cutter, each of the second rollers is capable of feeding the second electrode roll to the second cutter, and the second electrode roll can be cut into the second electrode sheet when it passes through the second cutter.
[0006] In any of the above technical solutions, the coating mechanism further includes: A first coating component, comprising the diaphragm strip, is spaced apart from the second unloading component, and is used to lay the diaphragm strip onto one side surface of all the second electrodes; The second coating component includes another diaphragm strip, and the second coating component is spaced apart from the second feeding component. The second coating component is used to lay the diaphragm strip on the other side surface of all the second electrodes.
[0007] In any of the above technical solutions, the electrode assembly fabrication equipment further includes: Composite components; The diaphragm cutter, the coating mechanism, the composite component, and the diaphragm cutter are arranged sequentially along the conveying direction of the second electrode sheet.
[0008] In any of the above technical solutions, the electrode assembly fabrication equipment further includes: A stacking mechanism, the stacking mechanism including at least one stacking station, the stacking station including a first correction table, a stacking table and a second correction table arranged in sequence; An electrode unit transfer mechanism is provided between the first electrode preparation mechanism and the first correction table. A composite unit transfer mechanism is disposed between the second film-making mechanism and the second correction table.
[0009] In any of the above technical solutions, the electrode assembly fabrication equipment further includes: A hot pressing mechanism is disposed on the side of the lamination mechanism; A slitting device is provided at an interval from the hot pressing mechanism; A hot-press feeding mechanism is disposed between the stacking mechanism and the hot-pressing mechanism; A hot-pressing feeding mechanism is disposed between the hot-pressing mechanism and the cutting device.
[0010] In any of the above technical solutions, the electrode assembly fabrication equipment further includes: An electrode transfer device is provided between the cutting device and the hot-pressing unloading mechanism; An electrode assembly feeding device is disposed on the side of the electrode assembly transfer device; The material feeding conveyor and the waste conveyor belt are distributed at intervals on the side of the electrode feeding device.
[0011] This application also provides a method for manufacturing an electrode assembly, applicable to the electrode assembly manufacturing equipment described in any of the above technical solutions, and therefore possesses all the beneficial technical effects of the electrode assembly manufacturing equipment, which will not be elaborated here.
[0012] The electrode assembly fabrication method includes the following steps: S100: Fabricate a dual-plate electrode unit; simultaneously cut at least two first electrode rolls distributed along a first direction to divide the at least two first electrode rolls into a dual-plate electrode unit, wherein the dual-plate electrode unit includes first electrodes spaced apart along the first direction; S200: Fabricate a double-sheet composite strip; simultaneously cut at least two second pole rolls distributed along the first direction to divide the at least two second pole rolls into multiple second pole sheets with polarity opposite to that of the first pole sheet; The second electrode includes a first surface and a second surface distributed along a third direction, and a diaphragm tape is attached to the first surface and the second surface of each second electrode. S300. Fabricate a double-layer composite unit; cut the diaphragm strip to divide the double-layer composite strip into multiple double-layer composite units arranged sequentially along the first direction; S400, Fabricate a dual-plate electrode assembly; alternately stack the dual-plate electrode unit and the dual-plate composite unit to a predetermined number of layers; S500, Fabricate a single-electrode group; cut the dual-electrode group to divide it into single-electrode groups.
[0013] In the above technical solution, step S400 further includes: S301. The diaphragm strip between two adjacent second electrodes in the double-sheet composite strip is cut by a diaphragm cutter, the length of which extends along the first direction.
[0014] In the above technical solution, step S500 further includes: S501. The dual-electrode group is cut by a slitting device, the length of which extends along a second direction, to divide the dual-electrode group into single-electrode groups distributed along the first direction.
[0015] Compared with the prior art, the beneficial effects of this application are as follows: The electrode assembly fabrication equipment provided in this application includes: a first electrode fabrication mechanism, comprising at least two first feeding components, all of which are arranged sequentially along a first direction, each of which is used to fabricate a first electrode sheet, and the first electrode sheets fabricated by all the first feeding components are spaced apart along the first direction; a second electrode fabrication mechanism, comprising at least two second feeding components, all of which are arranged sequentially along the first direction, each of which is used to fabricate a second electrode sheet with the opposite polarity to the first electrode sheet, and the second electrode sheets fabricated by all the second feeding components are spaced apart along the first direction; and a coating mechanism, which is disposed on the side of the second electrode fabrication mechanism and is capable of laying a diaphragm on both sides of all the second electrode sheets.
[0016] The electrode assembly manufacturing equipment provided in this application can produce at least two first electrodes and at least two second electrodes in a single batch during the electrode fabrication stage, thereby significantly improving the fabrication efficiency and providing sufficient electrode reserves for subsequent operations such as stacking and hot pressing. This improves the production efficiency of the electrode assembly manufacturing equipment and achieves a multiple increase in output without increasing the operating speed of each processing step, thus significantly improving the operating efficiency of the electrode assembly manufacturing equipment.
[0017] The electrode assembly manufacturing method provided in this application enables batch processing in multiple process stages, such as electrode sheet fabrication and stacking, significantly improving the production efficiency of electrode assemblies and achieving a multiple increase in output. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the electrode assembly fabrication equipment provided in the embodiments of this application; Figure 2A schematic diagram of the film-making process of the second film-making mechanism of the electrode assembly fabrication equipment provided in the embodiments of this application; Figure 3 This is a schematic diagram of the stacking process of the electrode assembly fabrication equipment provided in the embodiments of this application.
[0020] Figure label: 1-First film-making mechanism, 101-First unloading component, 102-First cutter, 2-Second film-making mechanism, 201-Second unloading component, 202-Second cutter, 3-First coating component, 4-Second coating component, 5-Composite component, 6-Diaphragm cutter, 7-Electrode unit transfer mechanism, 8-Composite unit transfer mechanism, 9-First alignment table, 10-Stacking table, 11-Second alignment table, 12-Hot pressing loading mechanism, 13 - Hot press, 14- Hot press feeding mechanism, 15- Slitting device, 16- Electrode group transfer device, 17- Electrode group feeding device, 18- Second roller, 19- Second electrode roll, 20- Diaphragm strip, 100- Double-plate composite unit, 200- Double-plate composite strip, 300- First electrode, 400- Double-plate electrode unit, 500- Second electrode, 600- Double-plate electrode group, 700- Single electrode group, a- First direction, b- Second direction. Detailed Implementation
[0021] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.
[0022] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.
[0023] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0026] The following reference Figures 1 to 3 The electrode assembly fabrication apparatus and method described in the embodiments of this application are explained.
[0027] Firstly, in Example 1, see... Figures 1 to 3 As shown, Embodiment 1 of this application provides an electrode assembly fabrication apparatus. This electrode assembly fabrication apparatus includes: a first sheet-making mechanism 1, a second sheet-making mechanism 2, and a coating mechanism. The first sheet-making mechanism 1 includes at least two first feeding components 101, all of which are arranged sequentially along a first direction a. All first feeding components 101 can simultaneously participate in the fabrication of first electrode sheets 300. All first feeding components 101 can simultaneously and in a single operation fabricate at least two first electrode sheets 300 spaced apart along the first direction a, thereby forming an electrode unit with a single-sheet structure. The second sheet-making mechanism 2 includes at least two second feeding components 201, all of which are arranged sequentially along the first direction a. The feeding component 201 can simultaneously and in one operation produce at least two second electrode sheets 500 arranged at intervals along the first direction a. The first electrode sheet 300 and the second electrode sheet 500 have opposite polarities, one of which is a positive electrode sheet and the other is a negative electrode sheet. Optionally, in this embodiment, the first electrode sheet 300 is a positive electrode sheet and the second electrode sheet 500 is a negative electrode sheet. In this case, the produced positive electrode sheet serves as an electrode sheet unit. The coating mechanism is located on the side of the second sheet-making mechanism 2. The coating mechanism can lay the separator material strip 20 on one side surface of all negative electrode sheets and can also lay the separator material strip 20 on the other side surface of all negative electrode sheets, thereby producing a double composite material strip 200 with a structure of "separator material strip - double negative electrode sheet - separator material strip".
[0028] Specifically, in this embodiment, we take the case where there are two first unloading components 101 and two second unloading components 201. The two first unloading components 101 have the same structure, each including: a first roller, a first electrode roll, and a first cutter 102. The first electrode roll is wound layer by layer onto the first roller. The first roller is connected to a drive motor, which drives the first roller to rotate, thereby releasing the first electrode roll one revolution at a time. The first cutter 102 is spaced apart from the first roller along the second direction b, so that during the process of the first roller conveying the first electrode roll along the second direction b, the first cutter 102 cuts the first electrode roll sequentially at a predetermined time interval, cutting the first electrode roll into several first electrode sheets 300. Optionally, the first roller is provided with a correction component, which can correct the unwinding posture of the first roller and reduce the risk of wrinkles occurring during the conveying process of the first electrode roll. It should be noted that in this embodiment, the second direction b is the feeding direction of the first film-making mechanism 1 and the second film-making mechanism 2, the first direction a is the width direction of the first electrode roll and the second electrode roll, and the first direction a is perpendicular to the second direction b.
[0029] Optionally, a detection device for foreign object control and defect detection of the first electrode roll is provided between the first roller and the first cutter 102. The detection device can be a CCD inspection camera commonly used in the prior art.
[0030] Optionally, in this embodiment, the two first feeding components 101 share the same first cutter 102 to cut the two first electrode rolls simultaneously, thereby producing a plurality of double electrode units 400 having two first electrode sheets 300.
[0031] Optionally, the two first rollers included in the two first feeding components 101 are spaced apart in the first direction a. Each first roller has a first electrode lug on one side along its length. The two first electrode rolls are provided with first electrode lugs on the sides that are far apart from each other. After the first cutter 102 cuts the two first electrode rolls at the same time to form the first electrode sheet 300, the first electrode lugs of the two first electrode sheets 300 distributed along the first direction a are far apart from each other and face opposite directions. During the feeding process, the non-electrode lug side distance between the two first electrode rolls remains fixed.
[0032] The two second unloading components 201 have identical structures. Each second unloading component 201 includes a second roller 18, a second electrode roll 19, and a second cutter 202. The second electrode roll 19 is wound layer by layer onto the second roller 18. The second roller is connected to a drive motor, and the second roller can release the second electrode roll 19 one revolution at a time. The second cutter 202 is spaced apart from the second roller 18 along the second direction b, so that during the process of the second roller 18 conveying the second electrode roll 19 along the second direction b, the second cutter 202 cuts the second electrode roll 19 sequentially at a predetermined time interval frequency, cutting the second electrode roll 19 into several second electrode sheets 500. Optionally, the second roller 18 is provided with a correction component, which can correct the unwinding posture of the second roller 18 and reduce the risk of wrinkles occurring during the conveying process of the second electrode roll 19.
[0033] Optionally, a detection device for foreign object control and defect detection of the second pole roll 19 is provided between the second roller 18 and the second cutter 202.
[0034] Optionally, the two second feeding components 201 share the same second cutter 202 to cut the two second pole rolls 19 simultaneously.
[0035] Optionally, each second pole roll 19 on the second roller 18 has a plurality of second pole ears along its length on one side. The sides of the two second pole rolls 19 that are far apart from each other are provided with second pole ears, so that after the second cutter 202 cuts the two second pole rolls 19 at the same time to form the second pole sheet 500, the second pole ears of the two second pole sheets 500 distributed along the first direction a are far apart from each other and face opposite directions. During the feeding process, the non-pole ear side distance of the two second pole sheets 500 remains fixed.
[0036] It should be noted that the number of the first feeding component 101 and the number of the second feeding component 201 are not limited to two. The number of the first feeding component 101 and the number of the second feeding component 201 are the same. When the number of both is more than two, those skilled in the art are fully capable of arranging them according to the above rules. The film-making process of all the first feeding components 101 and all the second feeding components 201 is the same as described above, which those skilled in the art can fully understand.
[0037] Furthermore, the coating mechanism includes a first coating component 3 and a second coating component 4. The first coating component 3 includes a third roller and a diaphragm strip 20 wound on the third roller. The second coating component 4 includes a fourth roller and a diaphragm strip 20 wound on the fourth roller. The third roller and the second cutter 202 are spaced apart along the second direction b, and the third roller is located above the second cutter 202, so that the diaphragm strip 20 released by the third roller can cover the entire upper surface of the second electrode 500. The fourth roller is located below the second cutter 202, so that the diaphragm strip 20 released by the fourth roller can cover the entire lower surface of the second electrode 500.
[0038] Optionally, the first roller and the second roller 18 are driven separately, so that the first sheet-making mechanism 1 and the second sheet-making mechanism 2 can operate simultaneously, or one of them can operate alone, and the coating mechanism and the second sheet-making mechanism 2 operate synchronously. When only the first sheet-making mechanism 1 is used, the electrode assembly manufacturing equipment can continuously produce a number of first electrode sheets 300. When the first sheet-making mechanism 1 is stopped and the second sheet-making mechanism 2 and the coating mechanism are running, the electrode assembly manufacturing equipment can produce a double-sheet composite material strip 200 with the structure of diaphragm material strip 20 - two second electrode sheets 500 distributed along the first direction a - diaphragm material strip 20. After the double-sheet composite material strip 200 is cut by the diaphragm cutter 6, a number of double-sheet composite units 100 with the structure of diaphragm - double-sheet second electrode sheets 500 - diaphragm can be obtained.
[0039] Furthermore, the electrode assembly manufacturing equipment also includes a composite component 5. The composite component 5 and the second cutter 202 are spaced apart along the second direction b. The composite component 5 includes two hot composite rollers spaced apart vertically, forming a hot composite channel between the two hot composite rollers. After the double-sheet composite strip 200 passes through the hot composite channel, the diaphragm strips 20 on the upper and lower sides can be tightly attached to the large surfaces on both sides of each second electrode 500.
[0040] Furthermore, the electrode assembly manufacturing equipment also includes a diaphragm cutter 6, which is used to cut the diaphragm strip 20 between any two adjacent second electrode sheets 500 arranged along the second direction b, thereby cutting the double-sheet composite strip 200 into a plurality of double-sheet composite units 100 containing two second electrode sheets 500.
[0041] Furthermore, the electrode assembly manufacturing equipment also includes an electrode unit transfer mechanism 7. The electrode unit transfer mechanism 7 is spaced apart from the first cutter 102 along the second direction b. The double electrode unit 400 produced by the first electrode making mechanism 1 is conveyed to the electrode unit transfer mechanism 7. The electrode unit transfer mechanism 7 includes a conveyor belt, and a buffer hopper, an NG hopper, and a detection component disposed on the side of the first conveyor belt. The detection component is disposed close to the first cutter 102 and is used to detect the quality of the double electrode unit 400. The detection includes, but is not limited to, size detection and defect detection. The double electrode unit 400 that passes the detection can be conveyed to the next station or transferred to the buffer hopper for temporary storage.
[0042] Furthermore, the electrode assembly fabrication equipment also includes a composite unit transfer mechanism 8. The diaphragm cutters 6 of the composite unit transfer mechanism 8 are spaced apart along the second direction b. The double-sheet composite units 100 fabricated by the second sheet-making mechanism 2 and the coating mechanism are transported to the composite unit transfer mechanism 8. The structure of the composite unit transfer mechanism 8 is similar to that of the electrode unit transfer mechanism 7 described above, and will be fully understood by those skilled in the art.
[0043] Furthermore, the electrode assembly manufacturing equipment also includes a stacking mechanism, which includes at least one stacking station. Each stacking station includes a first alignment table 9, a stacking table 10, and a second alignment table 11 arranged sequentially along the first direction a. The first alignment table 9 is located near the electrode unit transfer mechanism 7, and the second alignment table 11 is located near the composite unit transfer mechanism 8. The number of stacking stations is configured according to the production capacity and expected output.
[0044] In this embodiment, there are multiple stacking stations, which are arranged sequentially at intervals along the second direction b. Preferably, both the first alignment table 9 and the second alignment table 11 are equipped with alignment devices. The stacking table 10 is equipped with a primary handling robot and a secondary handling robot. Optionally, both the primary and secondary handling robots are PNP robots. During the stacking operation, the primary handling robot uses negative pressure to pick up a certain number of double-sheet electrode units 400 from the electrode unit transfer mechanism 7 or the buffer hopper. After the suction plate of the primary handling robot changes its distance, it transports the double-sheet electrode units 400 to the first alignment table 9. A camera above the first alignment table 9 takes pictures of the double-sheet electrode units 400 for positioning. Then, the alignment device performs the alignment action to adjust the alignment of the double-sheet electrode units 400. The posture is then determined; the second-level handling robot then transports the corrected double-layer composite unit 100 from the second correction table 11 to the stacking table 10, so that the corrected double-layer composite unit 100 and the double-layer electrode unit 400 are alternately stacked on the stacking table 10. By cyclically picking up and putting down materials, the stacking can be completed alternately on the stacking table 10. The stacking is carried out layer by layer according to the pattern of double-layer composite unit 100-double-layer electrode unit 400-double-layer composite unit 100-......double-layer composite unit 100. When a certain number of layers are stacked, the stacked double-layer electrode group 600 is obtained.
[0045] Furthermore, the electrode assembly manufacturing equipment also includes a hot-pressing feeding mechanism 12 and a hot-pressing mechanism. The hot-pressing mechanism and the stacking mechanism are arranged sequentially along the second direction b, and the hot-pressing feeding mechanism 12 is located between the stacking mechanism and the hot-pressing mechanism. Specifically, the hot-pressing feeding mechanism 12 can be a robotic arm for feeding the dual-plate electrode assemblies 600 before hot pressing. The hot-pressing mechanism has at least one hot press 13, and each hot press 13 can hot press at least one dual-plate electrode assembly 600 at a time. The number of hot presses 13 can be configured according to the capacity and efficiency of the wafer making and stacking process. The hot-pressing feeding mechanism 12 feeds the dual-plate electrode assemblies 600 to each hot press 13, and then the hot press 13 heats and pressurizes the dual-plate electrode assemblies 600 to harden the loosely stacked dual-plate electrode assemblies 600.
[0046] Optionally, a conveyor line is provided on the side of the hot press feeding mechanism 12, and the double electrode group 600 stacked by the stacking mechanism is conveyed to the conveyor line so that the hot press feeding mechanism 12 can pick it up and distribute it to each hot press 13.
[0047] Furthermore, the electrode assembly manufacturing equipment also includes a hot-pressing unloading mechanism 14 and a slitting device 15. The slitting device 15 and the hot-pressing mechanism are arranged sequentially along the second direction b. The hot-pressing unloading mechanism 14 is located between the hot-pressing mechanism and the slitting device 15. Specifically, the hot-pressing unloading mechanism 14 can be a robotic arm commonly used in the art, used to transfer the hot-pressed double electrode assembly 600 to the slitting device 15, where the slitting device 15 slits the double electrode assembly 600. The slitting device 15 cuts the two parts of the hot-pressed and hardened double electrode assembly 600 distributed along the first direction a at the midpoint between them. The cutting direction of the slitting device 15 is the same as the second direction b, thereby dividing the double electrode assembly 600 into two single electrode assemblies 700.
[0048] Furthermore, the electrode assembly manufacturing equipment also includes an electrode assembly transfer device 16 and an electrode assembly unloading device 17. The electrode assembly transfer device 16 is located between the slitting device 15 and the electrode assembly unloading device 17. The dual-plate electrode assemblies 600 transferred by the electrode assembly unloading device 17 are buffered on the electrode assembly transfer device, and then slitted one by one by the slitting device 15 to obtain multiple finished single-plate electrode assemblies 700 with a structure of positive electrode plate-separator-negative electrode plate-separator... Optionally, the electrode assembly transfer device 16 can be, but is not limited to, a belt. The electrode assembly unloading device 17 can be a four-axis robot commonly used in the art.
[0049] Furthermore, the electrode assembly manufacturing equipment also includes a material unloading conveyor line and a waste material conveyor belt, which are spaced apart. In addition, the electrode assembly unloading device 17 has a material handling tray and an adhesive application station for affixing QR codes to the single electrode assemblies 700 on its side. The material unloading conveyor line is equipped with a detection device, which can be a CCD camera, used for short-circuit detection and appearance inspection of the large surfaces on both sides of the single electrode assembly 700. The electrode assembly unloading device 17 can pick up qualified single electrode assemblies 700 as finished products and place them at the adhesive application station, where a QR code containing information is affixed to each single electrode assembly 700.
[0050] After being tested by the testing device, the qualified finished single electrode assembly 700 is transferred from the electrode assembly unloading device 17 to the adhesive application station and finally transferred to the logistics line pallet, while the defective products are transferred to the waste conveyor belt.
[0051] Example 2: Example 2 of this application provides another electrode assembly fabrication apparatus. This electrode assembly fabrication apparatus includes all the contents of the above-mentioned electrode assembly fabrication apparatus, except that in this embodiment, the first electrode is a negative electrode and the second electrode is a positive electrode. That is, the first feeding mechanism is used to fabricate multiple negative electrode sheets, and the negative electrode sheets serve as electrode unit; the second feeding mechanism and the coating mechanism together fabricate a double-sheet composite unit with a structure of separator-positive electrode sheet-separator. After the above-mentioned stacking, hot pressing and slitting operations, a finished single-electrode assembly with a structure of negative electrode sheet-separator-positive electrode sheet-separator… can be obtained.
[0052] Furthermore, it should be noted that in this embodiment, when the first sheet-making mechanism operates independently, while the second sheet-making mechanism and the coating mechanism are in a stopped state, the electrode assembly fabrication equipment can produce multiple negative electrode sheets. When the first sheet-making mechanism is stopped and the second sheet-making mechanism and the coating mechanism are running, the electrode assembly fabrication equipment can produce a double-sheet unit strip with a structure of separator strip-double positive electrode sheet-separator strip. After the separator strip is cut by the separator cutter, a double-sheet composite unit with a structure of separator-double positive electrode sheet-separator can be obtained.
[0053] Other identical content will not be repeated here, as those skilled in the art will fully understand it.
[0054] In summary, the electrode assembly manufacturing equipment provided in this application can produce at least two first electrodes and at least two second electrodes in a single batch during the electrode fabrication stage, thereby significantly improving the fabrication efficiency. This provides a sufficient reserve of electrodes for subsequent operations such as stacking and hot pressing, thus improving the production efficiency of the electrode assembly manufacturing equipment. It can achieve a multiple increase in output without increasing the operating speed of each processing step, significantly improving the operating efficiency of the electrode assembly manufacturing equipment.
[0055] Secondly, this application also provides a method for manufacturing an electrode assembly, applicable to the electrode assembly manufacturing equipment in the above embodiments. This method specifically includes the following steps: S100, fabricate a dual-plate electrode unit 400; simultaneously cut at least two first electrode rolls distributed along the first direction a to divide the at least two first electrode rolls into multiple first electrode sheets 300.
[0056] Specifically, at least two first feeding components 101 are spaced apart along the first direction a. Taking two first feeding components 101 as an example, the two first feeding components 101 are spaced apart along the first direction a. The two first feeding components 101 simultaneously release the first electrode rolls along the second direction b. The two first electrode rolls are cut simultaneously by the first cutter 102. The first cutter 102 reciprocates along the third direction to move closer to or away from the first electrode rolls. The blade length of the first cutter 102 extends along the first direction a, so that the first cutter 102 can divide the two first electrode rolls into multiple double electrode units 400 arranged sequentially along the second direction. Each double electrode unit 400 includes two first electrode sheets 300 spaced apart along the first direction a.
[0057] It should be noted that the third direction specifically refers to the thickness direction of the first polar roll, and the first direction a, the second direction b, and the third direction c are perpendicular to each other.
[0058] S200, fabricate a double-sheet composite strip 200; simultaneously cut at least two second pole rolls distributed along the first direction a to divide the at least two second pole rolls into multiple second pole rolls 500 with polarity opposite to that of the first pole roll 300; The second electrode 500 includes a first surface and a second surface distributed along a third direction, and a diaphragm strip 20 is attached to the first surface and the second surface of each second electrode 500.
[0059] Specifically, at least two second feeding components 201 are spaced apart along the first direction a. Taking two second feeding components 201 as an example, the two second feeding components 201 are spaced apart along the first direction a. The two second feeding components 201 simultaneously release the second electrode roll along the second direction b. The second cutter 202 reciprocates along the third direction. The blade length of the second cutter 202 extends along the first direction a, so that the second cutter 202 can cut two second electrode rolls at the same time to cut the second electrode roll into multiple second electrode pieces 500. The multiple second electrode pieces 500 are divided into multiple groups spaced apart along the second direction b. Each group contains two second electrode pieces 500 spaced apart along the first direction a.
[0060] The second electrode 500 includes a first surface and a second surface distributed along its thickness direction. The first surface is specifically the upper surface, and the second surface is specifically the lower surface. A diaphragm strip 20 is attached to the first surface of all the second electrodes 500 by the first coating member 3, and a diaphragm strip 20 is attached to the second surface of all the second electrodes 500 by the second coating member 4 at the same time, thereby obtaining a double composite strip 200 with the structure of diaphragm strip 20 - two second electrodes 500 distributed along the first direction a - diaphragm strip 20.
[0061] S300, Fabricate a double-layer composite unit 100; cut the diaphragm strip 20 along the second direction b, dividing the double-layer composite strip 200 into multiple double-layer composite units 100 arranged sequentially along the first direction a.
[0062] Step S300 specifically includes: S301, the diaphragm strip 20 between two adjacent second electrode plates 500 in the double composite strip 200 is cut by the diaphragm cutter 6, and the length of the diaphragm cutter 6 extends along the first direction a.
[0063] The diaphragm cutter 6 is capable of reciprocating along a third direction. The blade length of the diaphragm cutter 6 extends along the first direction a. During the downward movement of the diaphragm cutter 6, it can cut the diaphragm strip 20 between two adjacent second electrode plates 500 arranged along the second direction b of the double composite strip 200, thereby dividing the double composite strip 200 into multiple double composite units 100 arranged sequentially and spaced along the second direction b. Each double composite unit 100 includes two second electrode plates 500 that are spaced apart along the first direction a and attached with the diaphragm strip 20.
[0064] S400, Fabricate a dual-electrode assembly 600; alternately stack the dual-electrode unit 400 and the dual-composite unit 100 to a predetermined number of layers.
[0065] Step S400 includes: S401. The corrected dual-electrode unit 400 is transferred to the stacking stage 10, and the corrected dual-composite unit 100 is transferred to the stacking stage. The dual-electrode unit 400 and the dual-electrode unit 400 are stacked alternately on the stacking stage 10. After stacking to a predetermined number of layers, the dual-electrode group 600 can be obtained.
[0066] S402. Transfer the dual-plate electrode assembly 600 to the hot press 13 to harden the dual-plate electrode assembly 600.
[0067] S500, fabricate a single-electrode group 700; cut the double-electrode group 600, dividing the double-electrode group 600 into a single-electrode group 700.
[0068] Step S500 specifically includes: S501. The hardened double electrode assembly is cut by the slitting device 15. The cutting length of the slitting device 15 extends along the second direction b. The slitting device 15 can reciprocate along the third direction. When the slitting device 15 descends, it can cut the diaphragm strip 20 between the two second electrodes 500 that are spaced apart along the first direction a in the double electrode assembly 600, thereby dividing the double electrode assembly 600 into single electrode assemblies 700 that are distributed along the first direction a.
[0069] S502. Test the 700 monopolar units, collect qualified products, and remove defective products.
[0070] As can be seen, the electrode assembly manufacturing method provided in this application enables batch processing in multiple process stages such as electrode sheet fabrication and stacking, significantly improving the production efficiency of electrode assemblies and achieving a multiple increase in output.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. An electrode assembly manufacturing device, characterized in that, include: The first electrode manufacturing mechanism includes at least two first feeding components, all of which are arranged sequentially along a first direction. The first feeding components are used to manufacture first electrode sheets, and the first electrode sheets manufactured by all the first feeding components are spaced apart along the first direction. The second electrode making mechanism includes at least two second feeding components. All the second feeding components are arranged sequentially along the first direction. The second feeding components are used to make a second electrode with a polarity opposite to that of the first electrode. The second electrode made by all the second feeding components are spaced apart along the first direction. A coating mechanism is provided on the side of the second electrode preparation mechanism, and the coating mechanism is capable of laying diaphragm material strips on both sides of all the second electrode sheets.
2. The electrode assembly fabrication equipment according to claim 1, characterized in that, Each of the first feeding components includes: The first roller is provided with a first electrode roll for making the first electrode sheet; the first rollers of all the first feeding components are arranged sequentially along the first direction, and the axes of all the first rollers are collinear or parallel. The first cutter, each of the first rollers can feed the first electrode roll to the first cutter, and the first electrode roll can be cut into the first electrode sheet by the first cutter when it passes through the first cutter; Each of the second feeding components includes: The second roller is provided with a second electrode roll for making the second electrode sheet; all the second rollers of the second feeding components are arranged sequentially along the first direction, and the axes of all the second rollers are collinear or parallel. The second cutter, each of the second rollers is capable of feeding the second electrode roll to the second cutter, and the second electrode roll can be cut into the second electrode sheet when it passes through the second cutter.
3. The electrode assembly fabrication equipment according to claim 1, characterized in that, The coating mechanism includes: A first coating component, comprising the diaphragm strip, is spaced apart from the second unloading component, and is used to lay the diaphragm strip onto one side surface of all the second electrodes; The second coating component includes another diaphragm strip, and the second coating component is spaced apart from the second feeding component. The second coating component is used to lay the diaphragm strip on the other side surface of all the second electrodes.
4. The electrode assembly fabrication equipment according to claim 1, characterized in that, The electrode assembly manufacturing equipment also includes: Composite components; The diaphragm cutter, the coating mechanism, the composite component, and the diaphragm cutter are arranged sequentially along the conveying direction of the second electrode sheet.
5. The electrode assembly fabrication equipment according to claim 1, characterized in that, The electrode assembly manufacturing equipment also includes: A stacking mechanism, the stacking mechanism including at least one stacking station, the stacking station including a first correction table, a stacking table and a second correction table arranged in sequence; An electrode unit transfer mechanism is provided between the first electrode preparation mechanism and the first correction table. A composite unit transfer mechanism is disposed between the second film-making mechanism and the second correction table.
6. The electrode assembly fabrication equipment according to claim 5, characterized in that, The electrode assembly manufacturing equipment also includes: A hot pressing mechanism is disposed on the side of the lamination mechanism; A slitting device is provided at an interval from the hot pressing mechanism; A hot-press feeding mechanism is disposed between the stacking mechanism and the hot-pressing mechanism; A hot-pressing feeding mechanism is disposed between the hot-pressing mechanism and the cutting device.
7. The electrode assembly fabrication equipment according to claim 6, characterized in that, The electrode assembly manufacturing equipment also includes: An electrode transfer device is provided between the cutting device and the hot-pressing unloading mechanism; An electrode assembly feeding device is disposed on the side of the electrode assembly transfer device; The material feeding conveyor and the waste conveyor belt are distributed at intervals on the side of the electrode feeding device.
8. A method for manufacturing an electrode assembly, characterized in that, Includes the following steps: S100: Fabricate a dual-plate electrode unit; simultaneously cut at least two first electrode rolls distributed along a first direction to divide the at least two first electrode rolls into a dual-plate electrode unit, wherein the dual-plate electrode unit includes first electrodes spaced apart along the first direction; S200: Fabricate a double-sheet composite strip; simultaneously cut at least two second pole rolls distributed along the first direction to divide the at least two second pole rolls into multiple second pole sheets with polarity opposite to that of the first pole sheet; The second electrode includes a first surface and a second surface distributed along a third direction, and a diaphragm tape is attached to the first surface and the second surface of each second electrode. S300, fabrication of dual-chip composite unit; Cut the diaphragm strip to divide the double-layer composite strip into multiple double-layer composite units arranged sequentially along the first direction; S400, Fabricate a dual-plate electrode assembly; alternately stack the dual-plate electrode unit and the dual-plate composite unit to a predetermined number of layers; S500, Fabricate a single-electrode group; cut the dual-electrode group to divide it into single-electrode groups.
9. The method for manufacturing an electrode assembly according to claim 8, characterized in that, Step S400 includes: S301. The diaphragm strip between two adjacent second electrodes in the double-sheet composite strip is cut by a diaphragm cutter, the length of which extends along the first direction.
10. The method for manufacturing an electrode assembly according to claim 8, characterized in that, Step S500 includes: S501. The dual-electrode group is cut by a slitting device, the length of which extends along a second direction, to divide the dual-electrode group into single-electrode groups distributed along the first direction.