Battery cell blanking device

Abstract

The utility model discloses a kind of electric core blanking equipment, including two blanking manipulator, two diaphragm separation devices, two hot-pressing devices, two baffle separation devices;First blanking manipulator is arranged between first lamination station and first baffle separation device, and located above first diaphragm separation device, first hot-pressing device is arranged at one side of first blanking manipulator, second blanking manipulator is arranged between second lamination station and second baffle separation device, and located above second diaphragm separation device, second hot-pressing device is arranged at one side of second blanking manipulator, after completing lamination, electric core is transferred to diaphragm separation device by blanking manipulator to separate lower diaphragm, after completing, again transfer to hot-pressing device to compact electric core, after hot-pressing is completed, again electric core is placed into baffle separation device to separate electric core and baffle.The utility model can automatically complete blanking forming, and preparation efficiency is high, and can guarantee the forming quality of electric core.

Description

[0001] This application claims priority to Chinese Patent Application No. 2024229548206, filed on November 29, 2024, entitled "A Battery Cell Feeding Device". Technical Field

[0002] This utility model relates to the field of battery manufacturing technology, specifically to a battery cell feeding device. Background Technology

[0003] Currently, lithium-ion batteries are widely used in consumer electronics, new energy vehicles, and energy storage. With the rapid development of the application market and the continuous improvement of user requirements for products, how to produce lithium-ion batteries with good safety performance, high specific energy, long cycle life, and low cost has become an important research direction in the field of lithium-ion batteries.

[0004] Lithium-ion batteries can be divided into two types based on their manufacturing method: wound and stacked. Wound batteries offer fast processing speed and high efficiency, but they have the following drawbacks: 1. Wound batteries require a certain degree of flexibility in the electrode sheets, resulting in lower electrode areal density and limiting the energy density of individual cells; 2. The reaction at the bending points of the electrode sheets in wound batteries differs from other locations, leading to poor electrode reaction uniformity, affecting performance and even posing safety hazards; 3. To completely enclose the positive electrode, wound batteries leave some ineffective areas on the negative electrode sheet, contributing no capacity and reducing the battery's energy density. In contrast, stacked batteries offer better electrode reaction uniformity, are safer, and allow for thicker electrode coatings, thus increasing the battery's energy density.

[0005] In the existing cell manufacturing process of stacked batteries, it is not convenient to automatically cut and form the cells, and it can only operate on a single cell, resulting in low manufacturing efficiency and the inability to control the forming quality of the cells. Utility Model Content

[0006] The purpose of this invention is to provide a battery cell blanking device to solve the problems of existing stacked battery cells, which are not convenient for automatic blanking and forming during the manufacturing process, can only operate on a single battery cell, have low manufacturing efficiency, and cannot control the quality of battery cell forming.

[0007] The technical solution of this utility model is as follows:

[0008] A battery cell unloading device includes a first unloading robot, a second unloading robot, a first separation component, and a second separation component.

[0009] The first unloading robot is configured to transfer the stacked battery cells to the first separation component, and the second unloading robot is configured to transfer the stacked battery cells to the second separation component. The first separation component is configured to separate multiple battery cells at the first stacking station into a single battery cell, and the second separation component is configured to separate multiple battery cells at the second stacking station into a single battery cell.

[0010] Furthermore, the first separation assembly includes a first diaphragm separation device, a first hot pressing device, and a first partition plate separation device, and the second separation assembly includes a second diaphragm separation device, a second hot pressing device, and a second partition plate separation device;

[0011] The first unloading robot is positioned between the first stacking station and the first separator separation device, and above the first separator separation device. The first hot pressing device is positioned to one side of the first unloading robot. The second unloading robot is positioned between the second stacking station and the second separator separation device, and above the second separator separation device. The second hot pressing device is positioned to one side of the second unloading robot. After stacking, the battery cells are transferred to the first separator separation device and the second separator separation device by the first and second unloading robots to separate the lower separator. After separation, the cells are transferred to the first and second hot pressing devices to compact them. After hot pressing, the cells are placed into the first separator separation device and the second separator separation device to separate the cells from the separators.

[0012] Furthermore, the first hot pressing device and the second hot pressing device have the same structure, each having several hot pressing stations. Each hot pressing station includes a hot pressing servo motor, a guide assembly, an upper hot pressing mold, and a lower hot pressing mold. The upper hot pressing mold is movably mounted on the lower hot pressing mold. The hot pressing servo motor is connected to the upper hot pressing mold through the guide assembly. The upper hot pressing mold and the lower hot pressing mold contain heating elements.

[0013] Furthermore, the battery cell unloading equipment also includes a first hot stamping platform, a second hot stamping platform, a first transfer robot, and a second transfer robot. The first transfer robot is positioned between the first separator separation device and the first hot stamping platform, and the second transfer robot is positioned between the second separator separation device and the second hot stamping platform. After the separators are separated, the battery cells are transported by the first transfer robot and the second transfer robot to the first hot stamping platform and the second hot stamping platform, where the excess separators of the dissimilar battery cells are hot stamped together.

[0014] Furthermore, the battery cell unloading equipment also includes a first appearance CCD inspection device and a second appearance CCD inspection device. The first transfer robot is positioned between the first partition separation device, the first hot stamping platform, and the first appearance CCD inspection device. The second transfer robot is positioned between the second partition separation device, the second hot stamping platform, and the second appearance CCD inspection device. After hot stamping is completed, the battery cell is transferred to the first appearance CCD inspection device and the second appearance CCD inspection device by the first transfer robot and the second transfer robot to inspect for appearance defects and dimensions.

[0015] Furthermore, the battery cell unloading equipment also includes a first NG (non-performing) product collection device, a second NG product collection device, and a battery cell unloading logistics line. The first transfer robot is positioned between the first partition separation device, the first hot stamping platform, the first appearance CCD detection device, the first NG product collection device, and the battery cell unloading logistics line. The second transfer robot is positioned between the second partition separation device, the second hot stamping platform, the second appearance CCD detection device, the second NG product collection device, and the battery cell unloading logistics line. NG products are collected by the first transfer robot and the second transfer robot into the first NG product collection device and the second NG product collection device for classification. Qualified products are transferred to the next process by the first transfer robot and the second transfer robot onto the battery cell unloading logistics line.

[0016] Furthermore, the first transfer robot is configured to selectively transport the battery cells to the first NG (non-performing) collection device or the battery cell unloading logistics line based on the detection results of the first appearance CCD detection device; the second transfer robot is configured to selectively transport the battery cells to the second NG collection device or the battery cell unloading logistics line based on the detection results of the second appearance CCD detection device.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The battery cell unloading equipment provided by this utility model can simultaneously grasp two stacked battery cells for unloading using a first unloading robot and a second unloading robot. During the unloading process, the battery cells are first transferred to a first diaphragm separation device and a second diaphragm separation device to separate the lower layer diaphragm. After the diaphragm separation is completed, the battery cells are transferred to a first hot pressing device and a second hot pressing device to compact them. After hot pressing, the battery cells are placed in a first separator separation device and a second separator separation device to separate the battery cells and separators. After the separators are separated, the battery cells are then processed by the first... A first and second transfer robot arm transports the cells to a first and second hot-pressing platform, where excess separators from the irregularly shaped cells are hot-pressed together. After hot pressing, the cells are transferred by the first and second transfer robot arms to a first and second appearance CCD inspection device for appearance and dimensional inspection. Incompatible (NG) cells are collected by the first and second NG collection devices, while compatible cells are transferred by the first and second transfer robot arms to the cell unloading logistics line for transport to the next process. This cell unloading equipment can automatically complete unloading and forming, and can operate on two cells simultaneously, improving manufacturing efficiency. Waste removal of the separator before hot pressing prevents the separator from sticking to the hot pressing device and accumulating, which could affect the appearance of the cells after hot pressing. CCD appearance inspection before discharge enables waste identification and early waste removal, ensuring the forming quality of the cells. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a battery cell feeding device provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first hot pressing device and the second hot pressing device of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0023] Example

[0024] Please see Figure 1 This embodiment provides a battery cell unloading device, including a first unloading robot 1, a second unloading robot 2, a first diaphragm separation device 3, a second diaphragm separation device 4, a first hot pressing device 5, a second hot pressing device 6, a first partition separation device 7, a second partition separation device 8, a first hot stamping platform 9, a second hot stamping platform 10, a first transfer robot 11, a second transfer robot 12, a first appearance CCD detection device 13, a second appearance CCD detection device 14, a first NG product collection device 15, a second NG product collection device 16, and a battery cell unloading logistics line 17.

[0025] The first lamination station and the second lamination station are respectively set up Figure 1 The upper and lower halves of the assembly are stacked at the first and second stacking stations, respectively. Each group of cells includes multiple cells, with adjacent cells separated by separators. Each cell includes a positive electrode, a negative electrode, and a separator, with the separator wound around the positive and negative electrodes to separate them. A first unloading robot 1 transfers the first group of cells to a first separation assembly, which then separates the multiple cells into individual cells using the first separation assembly (first separator separation device 3, first hot pressing device 5, and first separator separation device 7). A second unloading robot 2 transfers the second group of cells to a second separation assembly (second separator separation device 4, second hot pressing device 6, and second separator separation device 8), which then separates the multiple cells into individual cells.

[0026] The first unloading robot 1 is positioned between the first stacking station and the first separator 7, and above the first membrane separator 3. The first hot pressing device 5 is positioned to one side of the first unloading robot 1. The second unloading robot 2 is positioned between the second stacking station and the second separator 8, and above the second membrane separator 4. The second hot pressing device 6 is positioned to one side of the second unloading robot 2. After stacking, the battery cells are transferred by the first unloading robot 1 and the second unloading robot 2 to the first membrane separator 3 and the second membrane separator 4 to separate the lower membrane. After separation, the cells are transferred to the first hot pressing device 5 and the second hot pressing device 6 to compact them. After hot pressing, the cells are placed in the first separator separator 7 and the second separator separator 8 to separate the cells from the separators.

[0027] Combination Figure 2As shown, the first hot pressing device 5 and the second hot pressing device 6 have the same structure, each equipped with several hot pressing stations. Each hot pressing station includes a hot pressing servo motor 501, a guide component 502, a hot pressing upper mold 503, and a hot pressing lower mold 504. The hot pressing upper mold 503 is movably mounted on the hot pressing lower mold 504. The hot pressing servo motor 501 is connected to the hot pressing upper mold 503 through the guide component 502. The hot pressing upper mold 503 and the hot pressing lower mold 504 contain heating elements. The hot pressing servo motor 501 provides hot pressing pressure, the guide component 502 provides guidance, and the heating elements heat the hot pressing upper mold 503 and the hot pressing lower mold 504. Under the driving action of the hot pressing servo motor 501, the hot pressing function is realized, which can better compress and shape the battery cell.

[0028] The first transfer robot 11 is disposed between the first partition separation device 7, the first hot stamping platform 9, the first appearance CCD detection device 13, the first NG product collection device 15 and the battery cell unloading logistics line 17, and the second transfer robot 12 is disposed between the second partition separation device 8, the second hot stamping platform 10, the second appearance CCD detection device 14, the second NG product collection device 16 and the battery cell unloading logistics line 17. After the separators are separated, the battery cells are transported by the first transfer robot 11 and the second transfer robot 12 to the first hot stamping platform 9 and the second hot stamping platform 10 to hot stamp the excess separators of the different shaped battery cells together. After hot stamping, the cells are transferred by the first transfer robot 11 and the second transfer robot 12 to the first appearance CCD inspection device 13 and the second appearance CCD inspection device 14 to inspect the appearance defects and dimensions of the battery cells. NG products are placed into the first NG product collection device 15 and the second NG product collection device 16 by the first transfer robot 11 and the second transfer robot 12 for classification and collection, while qualified products are placed on the battery cell unloading logistics line 17 by the first transfer robot 11 and the second transfer robot 12 for transfer to the next process.

[0029] In summary, this battery cell feeding equipment has the following characteristics:

[0030] (1) It can automatically complete the feeding and forming process, and can operate two battery cells at the same time, resulting in high production efficiency;

[0031] (2) The lower diaphragm is discharged before hot pressing to prevent the diaphragm from sticking to the hot pressing device and the accumulation of diaphragm material will affect the appearance of the battery cells after hot pressing.

[0032] (3) Before discharge, CCD appearance inspection is used to identify waste and remove waste in advance, which ensures the molding quality of the battery cells.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery cell feeding device, characterized in that: It includes a first unloading robot, a second unloading robot, a first separation component, and a second separation component. The first unloading robot is configured to transfer the stacked battery cells to the first separation component, the second unloading robot is configured to transfer the stacked battery cells to the second separation component, the first separation component is configured to separate multiple battery cells at the first stacking station into a single battery cell, and the second separation component is configured to separate multiple battery cells at the second stacking station into a single battery cell.

2. The battery cell feeding device according to claim 1, characterized in that: The first separation component includes a first diaphragm separation device, a first hot-pressing device, and a first partition plate separation device; the second separation component includes a second diaphragm separation device, a second hot-pressing device, and a second partition plate separation device. The first unloading robot is positioned between the first stacking station and the first diaphragm separation device, and above the first diaphragm separation device. The first hot pressing device is positioned to one side of the first unloading robot. The second unloading robot is positioned between the second stacking station and the second diaphragm separation device, and above the second diaphragm separation device. The second hot pressing device is positioned to one side of the second unloading robot. The first unloading robot is configured to transfer the stacked battery cells to the first separator device. The second unloading robot is configured to transfer the stacked battery cells to the second separator. The first diaphragm separation device and the second diaphragm separation device are configured to separate the lower diaphragm; The first hot pressing device and the second hot pressing device are configured to compact the battery cell; The first separator separation device and the second separator separation device are configured to separate the battery cell and the separator.

3. The battery cell feeding device according to claim 2, characterized in that: The first hot pressing device and the second hot pressing device have the same structure, each having several hot pressing stations. Each hot pressing station includes a hot pressing servo motor, a guide component, an upper hot pressing mold, and a lower hot pressing mold. The upper hot pressing mold is movably mounted on the lower hot pressing mold. The hot pressing servo motor is connected to the upper hot pressing mold through the guide component. The upper and lower hot pressing molds contain heating elements.

4. The cell feeding device according to claim 2, characterized in that: The battery cell unloading equipment also includes a first hot stamping platform, a second hot stamping platform, a first transfer robot, and a second transfer robot. The first transfer robot is disposed between the first separator separation device and the first hot stamping platform, and the second transfer robot is disposed between the second separator separation device and the second hot stamping platform. The first transfer robot and the second transfer robot are respectively configured to transport the battery cells after separator separation to the first hot stamping platform and the second hot stamping platform. The first hot stamping platform and the second hot stamping platform are configured to hot stamp the excess separator of the heterogeneous battery cells together.

5. The battery cell feeding device according to claim 4, characterized in that: The battery cell unloading equipment also includes a first appearance CCD inspection device and a second appearance CCD inspection device. The first transfer robot is positioned between the first partition separation device, the first hot stamping platform, and the first appearance CCD inspection device. The second transfer robot is positioned between the second partition separation device, the second hot stamping platform, and the second appearance CCD inspection device. The first transfer robot and the second transfer robot are respectively configured to transport the hot-stamped battery cells to the first appearance CCD inspection device and the second appearance CCD inspection device. The first appearance CCD inspection device and the second appearance CCD inspection device are configured to inspect the appearance defects and dimensions of the battery cells.

6. The battery cell feeding device according to claim 5, characterized in that: The battery cell unloading equipment also includes a first NG (non-performing) product collection device and a second NG product collection device. The first transfer robot is positioned between the first partition separation device, the first hot stamping platform, the first appearance CCD detection device, and the first NG product collection device. The second transfer robot is positioned between the second partition separation device, the second hot stamping platform, the second appearance CCD detection device, and the second NG product collection device. NG products are placed into the first NG product collection device and the second NG product collection device for sorting and collection through the first transfer robot and the second transfer robot.

7. The cell feeding device according to claim 6, characterized in that: The battery cell unloading equipment also includes a battery cell unloading logistics line, where qualified products are transferred to the next process by the first transfer robot and the second transfer robot on the battery cell unloading logistics line.

8. The cell feeding device according to claim 7, characterized in that: The first transfer robot is configured to selectively transport the battery cells to the first NG (non-performing) collection device or the battery cell unloading line based on the detection results of the first appearance CCD detection device; the second transfer robot is configured to selectively transport the battery cells to the second NG collection device or the battery cell unloading line based on the detection results of the second appearance CCD detection device.

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