Lamination forming equipment

Abstract

The lamination forming equipment provided by the embodiment of the utility model relates to the technical field of battery production equipment, and comprises a compounding device used for providing a composite pole piece which comprises a diaphragm and a first pole piece which are arranged in a laminated manner; the first providing device is used for providing a second pole piece, and the second pole piece is matched with the composite pole piece; the lamination device comprises a lamination manipulator, and the lamination manipulator is used for stacking the composite pole piece and the first pole piece to obtain a battery cell semi-finished product; and the hot pressing device is used for performing hot pressing on the battery cell semi-finished product. In the embodiment of the invention, the first pole piece and the diaphragm are compounded into the composite pole piece, then the composite pole piece and the second pole piece are stacked in the lamination device to obtain the battery cell semi-finished product, and then the battery cell semi-finished product is subjected to hot press molding by using the hot press device to obtain the battery cell. According to the embodiment of the invention, the first pole piece is compounded with the diaphragm to form the composite pole piece, and then the composite pole piece and the second pole piece are stacked and subjected to hot press molding, so that more complex production requirements of the lithium battery composite lamination can be met, and the production efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production equipment, and particularly relates to a laminated sheet forming device. BACKGROUND

[0002] In the related art, compared with a multi-tab winding structure, a laminated sheet structure has more advantages in energy density, consistency of tab position, performance of a battery cell, and production of a lithium battery with different shapes. An existing lithium battery laminated sheet production process mainly stacks positive and negative sheets and a separator film alternately through a sheet feeding mechanism to form a laminated battery cell. However, this process cannot meet the laminated sheet production requirements of a new lithium battery composite structure. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art, and therefore proposes a laminated sheet forming device.

[0004] The laminated sheet forming device provided by the embodiments of the present application comprises:

[0005] A composite device is configured to provide a composite sheet, wherein the composite sheet comprises a separator film and a first sheet which are arranged in a stack.

[0006] A first providing device is configured to provide a second sheet, wherein the second sheet is matched with the composite sheet.

[0007] A laminated sheet device comprises a laminated sheet manipulator, wherein the laminated sheet manipulator is configured to stack the composite sheet and the first sheet to obtain a battery cell semi-product.

[0008] A hot pressing device is configured to hot press the battery cell semi-product.

[0009] The first sheet and the second sheet are one of an anode sheet and a cathode sheet.

[0010] Further, the composite device comprises a first unwinding mechanism and a first cutting mechanism, wherein the first unwinding mechanism is configured to wind a first tape, and the first cutting mechanism is arranged on one side of the first unwinding mechanism and configured to cut the first tape to obtain the first sheet.

[0011] Further, the composite device comprises a first conveying mechanism and a second unwinding mechanism, wherein the second unwinding mechanism is configured to wind a separator film tape, and the first conveying mechanism is configured to convey the first sheet to the second unwinding mechanism and composite the first sheet with the separator film tape.

[0012] Further, the composite device comprises a first positioning mechanism and a first deviation rectifying mechanism, the first positioning mechanism is arranged on one side of the second unwinding mechanism, and is used for positioning the first pole piece conveyed by the first conveying mechanism; and the first deviation rectifying mechanism is used for rectifying the deviation of the first pole piece.

[0013] Further, the composite device comprises a laser cutting mechanism, which is arranged on one side of the second unwinding mechanism and is used for cutting the diaphragm between two adjacent first pole pieces to obtain the composite pole piece.

[0014] Further, the composite device comprises a second conveying mechanism, which is used for conveying the composite pole piece to the laminating device.

[0015] Further, the composite device comprises a buffer mechanism arranged on one side of the laminating device, which is used for buffering the composite pole piece conveyed by the second conveying mechanism.

[0016] Further, the first providing device comprises a third unwinding mechanism and a third cutting mechanism, the third unwinding mechanism is used for winding a second material belt, and the third cutting mechanism is used for cutting the second material belt to obtain the second pole piece.

[0017] Further, the first providing device comprises a second detection mechanism, which is used for detecting whether two adjacent second pole pieces are connected.

[0018] Further, the third providing device is arranged on one side of the laminating device and is used for providing a single-sided pole piece.

[0019] Further, the preheating device is arranged between the laminating device and the hot pressing device, and is used for preheating the battery cell semi-product.

[0020] From the above technical solutions, the embodiments of the present application have at least the following beneficial effects:

[0021] In the laminating forming equipment provided by the embodiments of the present application, the first pole piece and the diaphragm are compounded into a composite pole piece, and then the composite pole piece and the second pole piece are stacked in the laminating device to obtain a battery cell semi-product, and then the hot pressing device is used for hot pressing forming to obtain a target battery cell. In the embodiments of the present application, the first pole piece is compounded into a composite pole piece first, and then the composite pole piece and the second pole piece are stacked and hot pressed, which can meet the more complex production requirements of lithium battery composite laminating, and can also improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings belong to the protection scope of the present application.

[0023] Figure 1 The planar structure schematic diagram of the lamination forming equipment provided by an embodiment of the present application is shown.

[0024] Reference signs:

[0025] 110, first unwinding mechanism; 120, first cutting mechanism; 130, first detection mechanism; 140, first discharge conveyor belt; 150, first transfer conveyor belt; 161, first positioning mechanism; 162, first deviation rectifying mechanism; 170, second unwinding mechanism; 180, laser cutting mechanism; 191, second conveying mechanism; 192, buffer mechanism;

[0026] 210, third unwinding mechanism; 220, third cutting mechanism; 230, second detection mechanism; 241, second discharge conveyor belt; 242, second transfer conveyor belt;

[0027] 310, lamination manipulator; 320, second deviation rectifying mechanism; 410, hot pressing device; 420, preheating device;

[0028] 510, fourth unwinding mechanism; 520, fourth cutting mechanism; 530, turnover mechanism; 540, fourth code printing mechanism; 550, single-sided pole piece transfer conveyor belt;

[0029] 610, third discharge conveyor belt; 620, tray collection station. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments only represent some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0031] Referring to Figure 1 The embodiment of the present application discloses a lamination forming equipment, which comprises a composite device, a first providing device, a lamination device and a hot pressing device 410.

[0032] Specifically, the composite device is configured to provide a composite tab, the composite tab comprising a separator and a first tab stacked together; the first providing device is configured to provide a second tab, the second tab being matched with the composite tab; the stacking device comprises a stacking manipulator 310, the stacking manipulator 310 being configured to stack the composite tab and the first tab to obtain a battery cell semi-product; and the hot-pressing device 410 is configured to hot-press the battery cell semi-product, so that the composite tab and the second tab are hot-pressed to form a target battery cell.

[0033] In some embodiments, the first tab and the second tab are an anode tab and a cathode tab, respectively.

[0034] In the stacking and forming device provided in the embodiments, the first tab and the separator are first combined to form a composite tab, and then the composite tab and the second tab are stacked in the stacking device to obtain a battery cell semi-product, and then the battery cell semi-product is hot-pressed by the hot-pressing device 410 to obtain a target battery cell. In the embodiments, the first tab is combined with the separator to form a composite tab, and then the composite tab and the second tab are stacked and hot-pressed, which can meet more complex production requirements of lithium battery composite tabs and improve production efficiency.

[0035] In some embodiments, the first tab is an anode tab, and the second tab is a cathode tab. In other embodiments, the first tab is a cathode tab, and the second tab is an anode tab.

[0036] In the following embodiments, the first tab is an anode tab, and the second tab is a cathode tab, which are taken as examples to describe and illustrate the stacking and forming device in the embodiments.

[0037] In some embodiments, referring to Figure 1 The composite device comprises a first unwinding mechanism 110 and a first cutting mechanism 120. The first unwinding mechanism 110 is configured to wind a first material tape. The first cutting mechanism 120 is disposed on one side of the first unwinding mechanism 110 and is configured to cut the first material tape to obtain the first tab. The first unwinding mechanism 110 winds the first material tape, and the first material tape is a material tape of the first tab. The first unwinding mechanism 110 releases the first material tape, and the first cutting mechanism 120 cuts the first material tape to obtain the first tab.

[0038] In a possible implementation, referring to Figure 1 The composite device comprises a first detection mechanism 130 disposed on one side of the first cutting mechanism 120. The first detection mechanism 130 is configured to detect the first tab cut by the first cutting mechanism 120 to detect whether each first tab is completely cut off. This can prevent different first tabs from being connected to each other and affecting the quality of the battery cell.

[0039] In some embodiments of the present application, the composite device comprises a first conveying mechanism and a second unwinding mechanism 170, the second unwinding mechanism 170 is used to wind the diaphragm material strip, and the first conveying mechanism is used to convey the first pole piece to the second unwinding mechanism 170 and composite with the diaphragm material strip. Specifically, the first conveying mechanism is used to transfer the first pole piece cut by the first cutting mechanism 120 to the second unwinding mechanism 170, so that the first pole piece is composited with the diaphragm released by the second unwinding mechanism 170.

[0040] In a possible implementation, referring to Figure 1 , the first conveying mechanism comprises a first discharge conveying belt 140 and a first transfer conveying belt 150, one end of the first discharge conveying belt 140 is connected with the first detection mechanism 130, the other end is connected with one end of the first transfer conveying belt 150, and the other end of the first transfer conveying belt 150 is connected with the second unwinding mechanism 170. Wherein, one side of the first discharge conveying belt 140 is provided with a first transfer mechanical arm, the first transfer mechanical arm is used to transfer the first pole piece from the first discharge conveying belt 140 to the first transfer conveying belt 150, and the first pole piece is transferred to the second unwinding mechanism 170 through the first discharge conveying belt 140 and the first transfer conveying belt 150.

[0041] In some embodiments of the present application, referring to Figure 1 , the composite device comprises a first positioning mechanism 161 and a first deviation rectifying mechanism 162, the first positioning mechanism 161 is arranged on one side of the second unwinding mechanism 170, the first positioning mechanism 161 is used to position the first pole piece conveyed by the first conveying mechanism, and the first deviation rectifying mechanism 162 is used to rectify the deviation of the first pole piece. In this way, the composite precision of the first pole piece and the diaphragm can be improved, so as to ensure the quality of the battery cell.

[0042] In some embodiments of the present application, referring to Figure 1 , the composite device comprises a laser cutting mechanism 180, the laser cutting mechanism 180 is arranged on one side of the second unwinding mechanism 170, and the laser cutting mechanism 180 is used to cut the diaphragm between the adjacent two first pole pieces to obtain a composite pole piece.

[0043] In some embodiments of the present application, referring to Figure 1 , the composite device comprises a second conveying mechanism 191, the second conveying mechanism 191 is used to transfer the composite pole piece to the lamination device. Specifically, after the laser cutting mechanism 180 cuts the diaphragm, a composite pole piece is obtained, and the composite pole piece is conveyed to the lamination device by the second conveying mechanism 191.

[0044] Wherein, the second conveying mechanism 191 can be a conveying belt, a steel belt or other structures capable of realizing material conveying.

[0045] In some embodiments of the present application, referring to Figure 1The composite device comprises a buffering mechanism 192 arranged on one side of the laminating device, and the buffering mechanism 192 is configured to buffer the composite pole piece conveyed by the second conveying mechanism 191.

[0046] In some embodiments of the present application, referring to Figure 1 The first providing device comprises a third unwinding mechanism 210 and a third cutting mechanism 220, the third unwinding mechanism 210 is configured to wind the second material tape, and the third cutting mechanism 220 is configured to cut the second material tape to obtain the second pole piece. The third unwinding mechanism 210 is wound with the second material tape, and the second material tape is the material tape of the second pole piece.

[0047] In some embodiments of the present application, referring to Figure 1 The first providing device comprises a second detection mechanism 230 arranged on one side of the third cutting mechanism 220, and the second detection mechanism 230 is configured to detect whether the adjacent two second pole pieces are connected.

[0048] In some embodiments of the present application, referring to Figure 1 The first providing device comprises a third conveying mechanism configured to move the second pole piece to the laminating device for the laminating manipulator 310 to grasp.

[0049] In a possible implementation, referring to Figure 1 The third conveying mechanism comprises a second material conveying belt 241 and a second transfer conveying belt 242 connected with each other, one end of the second material conveying belt 241 is connected with the third cutting mechanism 220, one end of the second transfer conveying belt 242 is connected with the other end of the second material conveying belt 241, and the other end of the second transfer conveying belt 242 extends to the range of the laminating manipulator 310.

[0050] In some embodiments of the present application, the laminating device comprises a second deviation rectifying mechanism 320 arranged on one side of the laminating station of the laminating device, and the second deviation rectifying mechanism 320 is configured to detect whether the composite pole piece and the second pole piece are aligned to ensure the quality of the battery cell.

[0051] In some embodiments of the present application, referring to Figure 1 The laminating forming device further comprises a third providing device arranged on one side of the laminating device and configured to provide the single-face pole piece.

[0052] Further, the third providing device comprises a fourth unwinding mechanism 510 and a fourth cutting mechanism 520, the fourth unwinding mechanism 510 is wound with a fourth material tape, the fourth material tape is the material tape of the single-face pole piece, and the fourth cutting mechanism 520 is configured to cut the fourth material tape to obtain the single-face pole piece.

[0053] In a possible implementation, referring to Figure 1The third providing device includes a turnover mechanism 530 and a fourth coding mechanism 540. The turnover mechanism 530 is configured to turn the single-sided pole piece. The fourth coding mechanism 540 is configured to code the single-sided pole piece.

[0054] In some embodiments of the present application, referring to Figure 1 The third providing device includes a single-sided pole piece transfer conveyor 550, which is configured to transfer the single-sided pole piece to the pickup range of the lamination manipulator 310.

[0055] In some embodiments of the present application, referring to Figure 1 The lamination forming device further includes a preheating device 420, which is arranged between the lamination device and the hot-pressing device 410. The preheating device 420 is configured to preheat the battery cell semi-product. In this way, the heating time of the hot-pressing device 410 before hot-pressing the composite pole piece and the second pole piece can be reduced, thereby improving the production efficiency.

[0056] In some embodiments of the present application, the hot-pressing device 410 includes a lamination detection mechanism, which is configured to detect whether the composite pole piece and the second pole piece are aligned, so as to ensure the quality of the battery cell.

[0057] In a possible implementation, the lamination detection mechanism includes a CCD detection module, which is configured to detect whether the composite pole piece and the second pole piece are aligned.

[0058] In some embodiments of the present application, referring to Figure 1 The lamination forming device includes a discharge conveying device, which is configured to convey the battery cell obtained by hot-pressing to a discharge station, so as to facilitate the discharge of the battery cell.

[0059] In a possible implementation, referring to ​ The discharge conveying device includes a third discharge conveyor 610 and a tray collection station 620. The third discharge conveyor 610 is connected to the hot-pressing station of the hot-pressing device 410 and the tray collection station 620, so as to facilitate the collection of the battery cell obtained by hot-pressing into the tray.

[0060] In some embodiments of the present application, the lamination forming device includes an AI detection device. The AI detection device is configured to detect the surface flatness and surface defects of the composite pole piece and the second pole piece after hot-pressing, so as to determine the quality of the battery cell.

[0061] It should be understood that, in the embodiments of the present application, in addition to the conveying belt, the feeding can also be achieved by using a clip, a tray or a pull belt.

[0062] In the description of the application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0063] The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0064] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0065] In the description of the application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A lamination molding apparatus characterized by comprising: The application relates to a battery cell production device. The device comprises a composite device for providing a composite pole piece, a first providing device for providing a second pole piece matched with the composite pole piece, a lamination device comprising a lamination manipulator for stacking the composite pole piece and the first pole piece to obtain a battery cell semi-product, and a hot-pressing device for hot-pressing the battery cell semi-product. One of the first pole piece and the second pole piece is an anode pole piece, and the other is a cathode pole piece. The composite device comprises a first unwinding mechanism for winding a first material belt and a first cutting mechanism arranged on one side of the first unwinding mechanism and used for cutting the first material belt to obtain the first pole piece. The composite device comprises a first conveying mechanism and a second unwinding mechanism for winding a separator material belt, and the first conveying mechanism is used for conveying the first pole piece to the second unwinding mechanism and combining the first pole piece with the separator material belt. The composite device comprises a first positioning mechanism arranged on one side of the second unwinding mechanism and used for positioning the first pole piece conveyed by the first conveying mechanism, and a first deviation rectifying mechanism used for rectifying the deviation of the first pole piece.

2. The laminating molding apparatus according to claim 1, characterized by The composite device comprises a laser cutting mechanism arranged on one side of the second unwinding mechanism and used for cutting the separator between two adjacent first pole pieces to obtain the composite pole piece.

3. The laminating molding apparatus according to claim 2, characterized by The composite device comprises a second conveying mechanism used for conveying the composite pole piece to the lamination device.

4. The laminating molding apparatus according to claim 3, wherein The composite device comprises a buffer mechanism arranged on one side of the lamination device and used for buffering the composite pole piece conveyed by the second conveying mechanism.

5. The laminating molding apparatus according to claim 3, wherein The first providing device comprises a third unwinding mechanism for winding a second material belt and a third cutting mechanism used for cutting the second material belt to obtain the second pole piece.

6. The laminating molding apparatus according to claim 1, wherein The first providing device comprises a second detection mechanism used for detecting whether two adjacent second pole pieces are connected.

7. The laminating molding apparatus according to claim 6, wherein The device further comprises a third providing device arranged on one side of the lamination device and used for providing a single-sided pole piece.

8. The laminating molding apparatus according to claim 1, wherein The device further comprises a preheating device arranged between the lamination device and the hot-pressing device and used for preheating the battery cell semi-product.

9. The laminating molding apparatus according to claim 8, wherein ​ 10. The laminating molding apparatus according to claim 1, wherein ​ 11. The laminating molding apparatus according to claim 1, wherein ​

Images