A battery cell edge wrapping device

Abstract

This utility model discloses a battery cell edge-wrapping device, which includes an annular edge-wrapping device, an ink supply device, and two sets of battery cell transfer devices. The two sets of battery cell transfer devices are configured to move independently without interference. The ink supply device includes a hydraulic slip-ring ink supply structure, which includes a stator and a rotor rotatably connected to the stator around a Z-axis. The stator has an ink supply passage, and the rotor has an ink distribution passage. The ink supply passage and the ink distribution passage are connected, and the ink for edge wrapping enters the ink supply passage and then the ink distribution passage. An ink supply pipe is connected between the rotor and each edge-wrapping structure. The annular edge-wrapping device includes an annular guide rail and at least one edge-wrapping structure. The edge-wrapping structure is connected to the annular guide rail and can move along the annular guide rail to wrap the edge of the battery cell. This configuration can reduce the overall cost of the equipment and improve the overall production efficiency of edge wrapping.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell processing technology, and in particular to a cell edge wrapping device. Background Technology

[0002] During the patterning and metallization process of photovoltaic cells, a layer of ink needs to be coated around the edges of the cells before electroplating to avoid circumferential plating.

[0003] Currently, the industry standard for edge-wrapping solar cells is as follows: the solar cell is transferred to an edge-wrapping device using a transfer device. After the edge-wrapping device wraps two opposite sides of the solar cell, either the transfer device rotates the solar cell 90 degrees and the edge-wrapping device wraps the other two opposite sides, or the transfer device moves the solar cell to another edge-wrapping device to wrap the other two opposite sides. Some systems also require an additional set of chamfering edge-wrapping devices to wrap the corners of the solar cell. After all the edges of the solar cell are wrapped, the transfer device unloads the solar cell and then carries a new solar cell to repeat the above process.

[0004] The above edge-binding operation has the following shortcomings:

[0005] 1. A relatively large number of edge-binding devices are required, which increases equipment costs. Moreover, the more devices there are, the higher the failure rate becomes.

[0006] 2. Only two opposite sides can be edged at a time, which requires multiple edge-wrapping operations in different directions. This makes the edge-wrapping of a single battery cell relatively time-consuming, resulting in low overall production efficiency.

[0007] 3. Only one set of battery cell transfer device is set up. This set of battery cell transfer device carries a battery cell and moves it between each process. After the edge wrapping operation is completed, it is unloaded and then used to carry a new battery cell for edge wrapping. As a result, the edge wrapping mechanism will have a relatively long idle waiting time, which makes the overall edge wrapping production efficiency very low. Utility Model Content

[0008] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a battery cell edge wrapping device with relatively low equipment cost and high edge wrapping production efficiency.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A battery cell edge-wrapping device includes a feeding device and a unloading device, and further includes:

[0011] An annular edge-sealing device includes an annular guide rail and at least one edge-sealing structure.

[0012] The edge structure is connected to the annular guide rail and can move along the annular guide rail;

[0013] The ink supply device includes a hydraulic slip ring type ink supply structure, which includes a stator part and a rotor part rotatably connected to the stator part around the Z-axis. The stator part is provided with an ink supply passage, and the rotor part is provided with an ink distribution passage. The ink supply passage and the ink distribution passage are connected, and an ink supply pipeline is connected between the edge-sealing structure and the ink distribution passage.

[0014] Both sets of cell transfer devices can carry cells from the loading device and send them to the ring-shaped edge-wrapping device for ring-shaped edge-wrapping. After the edge-wrapping is completed, the cells are sent to the unloading device for unloading, and then moved back to the loading device to carry the cells. The two sets of cell transfer devices are designed to move independently without interfering with each other.

[0015] Each of the aforementioned edge-sealing structures is connected to a recycling box, which is configured to collect ink falling from the edge-sealing structure; and the recycling box is configured to move along the annular guide rail together with the edge-sealing structure; the stator section is also provided with an ink return path spaced apart from the ink supply path, and the rotor section is also provided with a ink recovery path spaced apart from the ink distribution path, the ink return path and the ink recovery path are connected, and the recycling box is connected to the ink recovery path through an ink return pipe.

[0016] The annular edge-sealing device includes multiple edge-sealing structures spaced apart. The number of ink distribution channels and ink recovery channels corresponds to the number of edge-sealing structures. One ink distribution channel is connected to one edge-sealing structure through an ink supply pipe, and one ink recovery channel is connected to a recovery box through a return ink pipe.

[0017] The stator section is provided with an equal number of ink supply passages and ink return passages as the edge-sealing structure. One ink supply passage is connected to one ink distribution passage, and one ink return passage is connected to one ink recycling passage. Preferably, the battery cell edge-sealing device further includes an ink supply container for storing ink and an ink storage container for storing recycled ink. Each ink supply passage is connected to the ink supply container through an ink supply main pipe, and each ink return passage is connected to the ink storage container through an ink return main pipe.

[0018] The edge-binding structure includes a rotatable edge, an ink supply needle connected to the ink supply pipeline, and a scraper that can contact the edge of the edge; the outlet of the ink supply needle faces the edge of the edge, and the scraper is set to have an adjustable distance between itself and the edge of the edge; the edge portion is located on the upper side of the recycling box, and a portion is located outside the recycling box and facing the inner side of the circular track; the outlet of the ink supply needle is located on the upper side of the recycling box; the portion of the scraper used to contact the edge of the edge is also located on the upper side of the recycling box.

[0019] The edging structure further includes an edging seat that can move along a circular guide rail, a movable seat that can be relatively moved and connected to the edging seat, and a wheel seat that is fixedly connected to the movable seat. The edging is rotatably connected to the upper end of the wheel seat. The recycling box is relatively fixedly connected to the wheel seat. Preferably, the wheel seat passes upward through the bottom wall of the recycling box and is fixedly connected to the bottom wall of the recycling box, and a sealing structure is provided between the bottom wall of the recycling box and the wheel seat.

[0020] The battery cell transfer device includes a movable support 1, a movable bracket 52 movably connected to the movable support 1, a connector connected to the upper side of the transfer bracket, and a vacuum adsorption plate connected to the upper side of the connector. The vacuum adsorption plate is configured to move relative to the connector in the X-axis and Y-axis directions and rotate in the Z-axis direction; preferably, the connector is provided with a first adjusting member movable relative to it in the X-axis direction, a second adjusting member movably connected to the first adjusting member in the Y-axis direction, a rotation drive member connected to the second adjusting member, and the vacuum adsorption plate is connected to the upper end of the rotation drive member.

[0021] The edge-wrapping device for the battery cells also includes a device for detecting the position of the battery cells: a visual detection device for the position of the upper battery cells. Based on the detection results of the visual detection device, the battery cell transfer device moves the battery cells in the X-axis direction and / or moves them in the Y-axis direction and / or rotates them around the Z-axis to adjust their position. Before the battery cells are wrapped in a ring, the position adjustment and alignment must be completed first.

[0022] The battery cell edge-wrapping device also includes a guide member, which extends between the feeding device and the unloading device and passes under the annular guide rail. Two sets of battery cell transfer devices are respectively movably connected to two opposite sides of the guide member along its length.

[0023] The feeding device includes a feeding conveying device, a feeding transport device for transporting the battery cells to be wrapped on the feeding conveying device to the battery cell transfer device, a position sensor for sensing whether a battery cell is being transported to the pre-alignment position, and a pre-alignment structure for aligning the battery cells in the pre-alignment position.

[0024] Because this utility model adopts the above-mentioned technical solution, it has the following beneficial effects:

[0025] 1. Only one ring-shaped edge-wrapping device needs to be set up. The edge-wrapping mechanism of the ring-shaped edge-wrapping device can complete the edge-wrapping of the entire edge of the battery cell by moving in a ring around the edge of the battery cell. This can reduce the overall cost of the equipment and the failure rate is relatively low. Moreover, completing the edge-wrapping of a battery cell at one time also greatly reduces the time required for edge-wrapping a battery cell, thereby greatly improving the overall production efficiency of edge-wrapping.

[0026] 2. The ink supply device paired with the ring-shaped edge-wrapping device adopts a hydraulic slip ring structure, and each edge-wrapping mechanism is connected to the ink supply pipeline of the rotor through an ink supply pipe. In addition, the rotor can rotate synchronously with the edge-wrapping mechanism, which can prevent the ink supply pipelines of each edge-wrapping structure from twisting together when wrapping the battery cell, thereby avoiding edge-wrapping failure and ink supply failure caused by this. Moreover, the liquefied slip ring structure has good sealing performance and better ink flow.

[0027] 3. Each edge-binding structure is equipped with a recycling box that can move along the circular guide rail with the edge-binding structure. Each recycling box is connected to the ink return path of the ink supply device through a recycling pipeline, so as not only can it recycle ink and make full use of ink, but it also does not affect the edge binding.

[0028] 4. The ink supply structure that works with the annular edge-sealing device adopts a hydraulic slip ring structure. In addition to the above-mentioned beneficial technical effects, the hydraulic slip ring structure not only has excellent sealing performance and is not easy to leak ink, ensuring equipment stability, but also has low rotational inertia of the stator, which can effectively reduce vibration and impact, making it suitable for high-speed rotation scenarios. Therefore, it is more compatible with the annular edge-sealing device used in this application, because the edge-sealing structure requires rapid rotation during edge-sealing.

[0029] 5. Two sets of battery cell transfer devices are designed, and the two sets of battery cell transfer devices are set to move independently without interference. Thus, when the edge wrapping of the battery cells on one set of battery cell transfer devices is completed, the other set of transfer devices carrying the battery cells is already waiting. As soon as the first set of battery cell transfer devices leaves the annular edge wrapping device, the other set of transfer devices can move to the annular edge wrapping device to perform edge wrapping. In this way, the waiting time of the edge wrapping device is greatly shortened, thereby further improving the overall production efficiency of edge wrapping. Attached Figure Description

[0030] Figure 1 This is a plan view of the battery cell edge wrapping device of this utility model. Figure 1 ;

[0031] Figure 2 This is a three-dimensional schematic diagram of the edge-wrapping device for battery cells according to this utility model. Figure 1 (behind the hidden rack);

[0032] Figure 3 This is a three-dimensional schematic diagram of the edge-wrapping device for battery cells according to this utility model. Figure 2 (behind the hidden rack);

[0033] Figure 4 This is a top view of the battery cell edge-wrapping device of this utility model (with the frame hidden);

[0034] Figure 5This is a schematic diagram of the annular edge-wrapping device, ink supply device, and a set of battery cell transfer devices of the present invention.

[0035] Figure 6 According to Figure 5 An enlarged schematic diagram of part A in the middle;

[0036] Figure 7 This is an enlarged 3D schematic diagram of the edging structure;

[0037] Figure 8 This is an enlarged schematic diagram of one embodiment of the edge-binding structure;

[0038] Figure 9 This is an enlarged planar schematic diagram of two sets of battery cell transfer devices and guide rails;

[0039] Figure 10 This is an enlarged 3D schematic diagram of two sets of battery cell transfer devices and guide rails;

[0040] Figure 11 An enlarged schematic diagram of a battery cell transfer device carrying a battery cell under a visual inspection device;

[0041] Figure 12 This is an enlarged schematic diagram of the feeding device. Detailed Implementation

[0042] like Figures 1 to 6 As shown, this utility model discloses a battery cell edge-wrapping device, which includes a feeding device 1 and a discharging device 2, and further includes:

[0043] The annular edge-binding device 3 includes an annular guide rail 31 and at least one edge-binding structure 32, wherein the edge-binding structure 32 is connected to the annular guide rail 31 and can move along the annular guide rail 31.

[0044] The ink supply device 4 includes a hydraulic slip ring type ink supply structure, which includes a stator part 41 and a rotor part 42 rotatably connected to the stator part 41 around the Z-axis. The stator part 41 is provided with an ink supply passage, and the rotor part 42 is provided with an ink distribution passage. The ink supply passage and the ink distribution passage are connected (not shown in the figure), and the edge-sealing mechanism 32 is connected to the ink distribution passage with an ink supply pipe 43. The ink for edge sealing enters the ink supply passage and then enters the ink distribution passage and the ink supply pipe 43 to supply ink to the edge-sealing structure 32.

[0045] Both sets of cell transfer devices 5 can carry cells from the loading device 1 and deliver them to the annular edge-wrapping device 3 for edge-wrapping. After edge-wrapping, the cells are then delivered to the unloading device 2 for unloading, and then moved back to the loading device 1 to carry the cells. The two sets of cell transfer devices 5 are configured to move independently and without interference. That is, the two sets of cell transfer devices 5 can move independently without interfering with each other.

[0046] Preferably, each of the edge-sealing structures 32 is connected to a recycling box 6, which is configured to collect ink falling from the edge-sealing structure 32; and the recycling box 6 is configured to move along the annular guide rail 31 together with the edge-sealing structure 32; the stator section is also provided with an ink return passage spaced apart from the ink supply passage, and the rotor section 42 is also provided with a ink recovery passage spaced apart from the ink distribution passage, the ink return passage and the ink recovery passage are connected, and the recycling box 6 is connected to the ink recovery passage through an ink return pipe 44. The ink enters the ink supply passage of the stator section 41 and then flows downward into the ink distribution passage of the rotor section 42; while the ink in the ink recovery passage can be drawn upward into the ink return passage.

[0047] In this embodiment, the annular edge-sealing device 3 includes multiple edge-sealing structures 32 spaced apart. The number of ink distribution channels and ink recovery channels in the rotor section 42 corresponds to the number of edge-sealing structures 32. One ink distribution channel is connected to one edge-sealing structure 32 via an ink supply pipe 43, and one ink recovery channel is connected to the recovery box 6 via a return ink pipe 44. After ink enters the ink distribution channel, it is supplied to the edge-sealing structure 32 via the ink supply pipe 43. The ink falling from the edge-sealing structure 32 falls into the recovery box 6, and the ink in the recovery box 6 enters the corresponding ink recovery channel via the return ink pipe 44, thus forming an ink cycle. This not only makes full use of the ink, but also allows for faster detection and resolution of problems when there is a problem with the ink supply or recovery of a certain edge-sealing structure 32. Only the corresponding ink distribution channel, ink recovery channel, ink supply pipe 43, and return ink pipe 44 need to be checked, without the need for a complete inspection. Furthermore, when the edge-wrapping structure 32 rotates along the annular guide rail 31, the rotor 42 of the ink supply device 4 also rotates synchronously. This arrangement prevents the ink supply lines 43 and ink return lines 44 of each edge-wrapping structure 32 from twisting together during the edge-wrapping of the battery cell, thus avoiding edge-wrapping failure and ink supply / recovery failure. If the edge-wrapping structure 32 and the rotor 42 cannot rotate synchronously, the ink supply lines 43 and ink return lines 44 will inevitably twist together when the edge-wrapping structure 32 rotates. This will at least affect the flow of ink in the ink supply lines 43 and ink return lines 44, affecting ink supply / recovery; after the edge-wrapping structure 32 rotates multiple times, the deeply twisted ink supply lines 43 and ink return lines 44 will prevent the edge-wrapping structure 32 from rotating in the same direction, thus preventing the edge-wrapping action.

[0048] The upper end of an ink supply bracket 40 is connected to the stator part 41, and the hydraulic slip ring type ink supply structure is located above the annular guide rail 31.

[0049] The battery cell edge-wrapping device of this utility model also includes an ink supply container 45 for storing ink and an ink storage container 46 for storing recycled ink. The ink supply container 45 is connected to the ink supply passage of the ink supply device 4 through an ink supply main pipe 47, and the ink storage container 46 is connected to the ink return passage through an ink return main pipe 48.

[0050] Positive pressure allows ink from the ink supply container 45 to flow through the ink supply main pipe 47, the ink supply passage of the stator 41, the ink separation passage of the selector, and the ink supply pipe 43 to the edge-sealing structure 32; negative pressure allows ink to flow from the recovery box 6, the return ink pipe 44, the ink separation passage, the return ink passage, and the return ink main pipe 48 into the ink storage container 46, thereby enabling ink supply and recovery to proceed more efficiently without interference.

[0051] In this embodiment, the stator section 41 is provided with an equal number of ink supply and return ink paths as the edge-binding structure 32; one ink supply path is connected to one ink distribution path, and one ink return path is connected to one ink recovery path. Each ink supply path is connected to the ink supply container 45 through an ink supply main pipe 47, and each ink return path is connected to the ink storage container 46 through an ink return main pipe 48. With this configuration, even if one of the ink supply paths, ink supply main pipe 47, ink return path, or ink return main pipe 48 malfunctions and cannot supply or recover ink, the other ink supply paths, ink supply main pipe 47, ink return path, and ink return main pipe 48 can still work normally, thus not affecting the overall edge-binding operation and ensuring the overall edge-binding efficiency. Furthermore, when a problem occurs in a certain ink supply path, ink return path, or a certain ink supply main 47 or ink return main 48, similarly, only the corresponding ink supply path, ink return path, ink supply main 47, and ink return main 48 need to be checked, without having to check all of them, thus enabling faster problem detection and resolution; moreover, the setting of multiple ink supply and ink return paths also allows for better adjustment of ink supply and ink return flow, making it more suitable for the edge wrapping needs of the battery cells.

[0052] In this embodiment, four sets of the edge-wrapping structures 32 are provided. Correspondingly, the hydraulic slip ring ink supply structure is provided with four ink supply channels, four ink return channels, four ink supply main pipes 47, and four ink return main pipes 48. During edge wrapping, one set of edge-wrapping structures 32 can be responsible for wrapping one edge and one corner of the battery cell. In other embodiments, other numbers of edge-wrapping structures 32 can be provided according to actual needs.

[0053] The described hydraulic slip ring ink supply structure is essentially a hydraulic slip ring. Both the stator and rotor sections of the hydraulic slip ring are equipped with pipes, which are respectively designated as the ink supply path, ink distribution path, ink return path, and ink recovery path in this application. Furthermore, the outer walls of the stator and rotor sections of the hydraulic slip ring are respectively provided with stator tube interfaces and rotor tube interfaces. The stator tube interfaces are connected to the pipes inside the stator section (i.e., the ink supply channel and ink return channel in this application), and the main ink supply pipe and main ink return pipe are connected to their respective stator tube interfaces. The rotor tube interfaces are connected to the channels inside the rotor section (i.e., the ink distribution channel and ink recovery channel in this application), and the ink supply pipeline and ink return pipeline are connected to their respective rotor tube interfaces. Furthermore, some hydraulic slip ring rotor interfaces are arranged horizontally, that is, the pipe interface is located on the side of the rotor (as shown in the figure in this application), while some hydraulic slip ring rotor interfaces are arranged vertically (not shown in the figure), that is, the pipe interface is located on the lower side of the rotor and faces downward. This application does not limit whether the rotor pipe interface is arranged horizontally or vertically, both are acceptable.

[0054] The hydraulic slip ring is a conventional structure and is a commercially available product, such as hydraulic slip rings from brands like Xindeli and Mofulong. Its internal structure and the principle of internal fluid flow are well known, so it will not be described in detail here.

[0055] The ink supply structure that works in conjunction with the annular edge-sealing device adopts a hydraulic slip ring structure, which not only has excellent sealing performance and is not prone to ink leakage, ensuring equipment stability; but also has low rotational inertia of the stator, which can effectively reduce vibration and impact, making it suitable for high-speed rotation scenarios. Therefore, it is more compatible with the annular edge-sealing device used in this application, because the edge-sealing structure 32 requires rapid rotation when it is edge-sealed.

[0056] The edge-sealing structure 32 includes a rotatable edge-sealing wheel 321, an ink supply needle 322 connected to the ink supply pipe 43, and a scraper 323 that can contact the edge of the edge-sealing wheel 321. The outlet of the ink supply needle 322 faces the edge of the edge-sealing wheel 321, and the scraper 323 is configured to have an adjustable distance between it and the edge of the edge-sealing wheel 321. Ink in the ink distribution channel enters the ink supply needle 322 through the ink supply pipe and is injected into the edge of the edge-sealing wheel 321. As the edge-sealing wheel 321 rotates, the contact between the scraper and the edge of the edge-sealing wheel 321 causes the ink to be evenly coated on the edge of the edge-sealing wheel 321, and removes excess ink from the edge of the edge-sealing wheel 321, thereby making the ink coating on the edge of the battery cell more uniform and improving the quality of the edge coating of the battery cell. The adjustable distance between the scraper 323 and the edge of the edge-sealing wheel 321 allows adjustment of the thickness of the ink layer at the edge of the edge-sealing wheel 321, and thus the thickness of the edge coating of the battery cell.

[0057] The edge-binding roller 321 is partially located on the upper side of the recycling box 6, and partially located outside the recycling box 6 and facing the inner side of the annular track; the outlet of the ink supply needle 322 is located on the upper side of the recycling box 6; the part of the scraper 323 that contacts the edge of the edge-binding roller 321 is also located on the upper side of the recycling box 6. Therefore, the ink from the ink supply needle 322, besides being injected into the edge of the edge-binding roller 321, will also drip into the recycling box 6 if any falls. The portion of ink scraped off the edge of the edge-binding roller 321 by the scraper 323 will also fall into the recycling box 6, thus preventing ink waste and pollution.

[0058] The edging structure 32 further includes an edging seat 324 movable along the annular guide rail 31, a movable seat 325 movably connected to the edging seat 324, and a wheel seat 326 fixedly connected to the movable seat 325. The edging wheel 321 is rotatably connected to the upper end of the wheel seat 326. The recycling box 6 is fixedly connected to the wheel seat 326. A cylinder (not shown) can be connected to the edging seat 324. The piston rod of the cylinder is connected to the movable seat 325. As the cylinder operates, the movable seat 325 is pulled to move in the inward and outward directions of the annular guide rail 31. Preferably, a cooperating guide rail and slider structure 3250 is also provided between the movable seat 325 and the edging seat 324.

[0059] There are several ways to achieve relative rotation between the edge-sealing wheel 321 and the wheel seat 326. One method is to install a bearing between the edge-sealing wheel 321 and the wheel seat 326, so that after the edge-sealing wheel 321 contacts the edge of the battery cell, the battery cell will be driven to rotate as the edge-sealing wheel 321 moves along the edge of the battery cell; another method is to install a motor 327 (e.g., on the recycling box 6 or the moving base 325 and the wheel seat 326). Figure 8 As shown in the diagram, a drive wheel is connected to the output shaft of the motor 327, and the lower end of a connecting shaft is rotatably connected to the upper end of the movable seat 325. The upper end of the connecting shaft is fixedly connected to the edging wheel 321, and a driven wheel is fixedly sleeved on the connecting shaft. The drive wheel and the driven wheel are connected by a belt 328, thus forming a transmission structure. When the motor 327 is working, it drives the edging wheel 321 to rotate through the transmission structure. With the above configuration, those skilled in the art can make conventional settings or use any other feasible known technology to drive the edging wheel to rotate relative to the wheel seat 326.

[0060] In this embodiment, the wheel seat 326 extends upward through the bottom wall of the recycling box 6 and is fixedly connected to the bottom wall of the recycling box 6. A sealing structure (not shown) is provided between the bottom wall of the recycling box 6 and the wheel seat 326 to prevent ink inside the recycling box 6 from leaking downward. The connection between the wheel seat 326 and the bottom wall of the recycling box 6, as well as the sealing structure, can be any known and feasible structure.

[0061] An ink supply base 3220 is connected to a recycling box 6, and an ink supply needle 322 is connected to the ink supply base 3220, with the outlet of the ink supply needle 322 located on the upper side of the recycling box 6. In this embodiment, the lower end of the ink supply base 3220 is connected to the bottom wall of the recycling box 6. In other embodiments, the ink supply base 3220 can also be connected to other suitable locations on the recycling box 6 or to the edge-sealing seat 324 or the movable seat 325, as long as the outlet of the ink supply needle 322 is located on the upper side of the recycling box 6 after connection.

[0062] The scraper 323 is connected to a mounting assembly 3230, which can be connected to the recycling box 6. For example, the lower end of the mounting assembly 3230 can be connected to the bottom wall of the recycling box 6, or the mounting assembly 3230 can be connected to other suitable positions on the recycling box 6. The mounting assembly 3230 can also be connected to the edge-binding seat 324 or the movable seat 325, as long as the part of the scraper 323 in contact with the edge of the edge-binding wheel 321 is also located on the upper side of the recycling box 6 when ink is applied. Preferably, the mounting assembly 3230 can be relatively movable and connected to the recycling box 6 or the edge-binding seat 324 and the movable seat 325, thereby achieving the purpose of adjustable distance between the scraper 323 and the edge of the edge-binding wheel 321. For example, a cylinder can be set on the side wall of the recycling box 6, and the mounting assembly 3230 can be connected to the piston rod of the cylinder, thus also achieving the purpose of relatively movable connection between the mounting assembly 3230 and the recycling box 6. The operation of the cylinder causes the piston rod to pull the mounting assembly 3230, thereby changing the distance between the scraper 323 and the edge of the edge-binding wheel 321.

[0063] The edge-wrapping device for the solar cells also includes a guide member 7, which extends between the loading device 1 and the unloading device 2 and passes under the annular guide rail 31. Two sets of solar cell transfer devices 5 are respectively movably connected to two opposite sides of the guide member 7 along its length. In this embodiment, a downwardly extending support seat 311 is connected to each opposite side of the annular guide rail 31, and the guide member 7 passes between the two support seats 311. In other embodiments, a downwardly extending support seat 311 may be connected to one side of the annular guide rail 31, and this support seat 311 may be located on one side of the guide member 7. This does not impede the movement of the solar cell transfer device 5.

[0064] Preferably, the guide member 7 and the battery cell transfer device 5 are also provided with corresponding guide rails and sliders to ensure the moving direction of the battery cell transfer device 5, thereby ensuring the certainty of the battery cell position.

[0065] The battery cell transfer device 5 includes a movable support 51, a movable bracket 52 movably connected to the movable support 51, a connector 53 connected to the upper side of the transfer bracket, and a vacuum adsorption plate 54 connected to the upper side of the connector 53. The vacuum adsorption plate 54 can adsorb or release the battery cells. An air pipe connector (not shown) is connected to the vacuum adsorption plate 54, through which the vacuum adsorption or release of the battery cells is transmitted.

[0066] The movable support 51 of the battery cell transfer device 5 is movably connected to the guide member 7 along the extension direction of the guide member 7. The movable support 51 and the guide member 7 are provided with corresponding guide rails and sliders.

[0067] In this embodiment, preferably, the vacuum adsorption plate 54 is configured to move relative to the connecting member 53 in the X-axis and Y-axis directions and rotate in the Z-axis direction. To achieve this, a first adjusting member 55 movable relative to it in the X-axis direction, a second adjusting member 56 movable in the Y-axis direction and connected to the first adjusting member 55, and a rotation drive member 57 connected to the second adjusting member 56 can be provided on the connecting member 53. The vacuum adsorption plate 54 is connected to the upper end of the rotation drive member 57. Thus, when the rotation drive member 57 drives the second adjusting member 56 to rotate, it drives the vacuum adsorption plate 54 and the battery cells thereon to rotate relative to the connecting member 53 in the Z-axis direction. The drive member 57 can be any known and feasible structure.

[0068] When the second adjusting member 56 moves relative to the first adjusting member 55 in the Y-axis direction, the rotary drive member 57, the vacuum adsorption plate 54, and the battery cells thereon move relative to the connecting member 53 in the Y-axis direction; when the first adjusting member 55 moves relative to the connecting member 53 in the X-axis direction, the second adjusting member 56, the rotary drive member 57, the vacuum adsorption plate 54, and the battery cells thereon move relative to the connecting member 53 in the X-axis direction. Through the above settings, the angular position of the battery cells can be adjusted to ensure the accuracy of the subsequent edge coating of the battery cells. The first adjusting member 55, the second adjusting member 56, and the rotary drive member 57 are not shown in the figure; their configuration and the driving force for their movement and rotation can be any known and feasible structure, and therefore will not be described in detail here.

[0069] Preferably, the battery cell edge-wrapping device of this utility model further includes a vision inspection device 8 for detecting the position of the battery cell on the battery cell transfer device 5. Based on the detection result of the vision inspection device 8, the battery cell transfer device 5 adjusts the position of the battery cell by moving it in the X-axis direction and / or moving it in the Y-axis direction and / or rotating it around the Z-axis. Before the battery cell is wrapped in annular shape, the position adjustment and alignment must be completed first. That is to say, only after the battery cell has been detected by the vision inspection device 8 and its position has been adjusted in cooperation with the battery cell transfer device 5, the battery cell transfer device 5 moves to deliver the battery cell to the annular edge-wrapping device 3 for edge wrapping. In this way, it is equivalent to adjusting the angle position of the battery cell before edge wrapping, so that after the battery cell transfer device 5 moves to below the annular guide rail 31, it is only necessary to drive the moving bracket 52 to move upward to the edge-wrapping position above the annular guide rail 31, without the need for further movement or rotation of the battery cell in the XYZ directions; thereby further improving the overall efficiency of edge wrapping.

[0070] The visual inspection device 8 includes an inspection bracket 81, a camera 82 connected to the inspection bracket 81, and a host computer (not shown) connected to the camera 82. When the battery cell transfer device 5, carrying the battery cell, moves to a preset inspection position below the visual inspection device 8, the camera 82 takes a picture of the battery cell and transmits it to the host computer. Based on feedback from the host computer, the battery cell transfer device 5 drives the vacuum adsorption plate 54 to move in the X-axis direction and / or the Y-axis direction and / or rotate around the Z-axis, thereby adjusting the angle and position of the battery cell on it. The camera 82 takes pictures and uploads them to the host computer, which analyzes them and provides feedback to the battery cell transfer device 5. This technology is conventional and will not be described in detail here.

[0071] The detection bracket 81 includes a camera bracket 811 for connecting to the camera 82 and a connecting seat 812 connected to one or both opposite sides of the camera bracket 811 and extending downward. The battery cell transfer device 5 carries the battery cell and moves it to the bottom of the camera bracket 811, where the camera 82 takes a picture.

[0072] Preferably, multiple cameras 82 are connected at intervals on the camera bracket 811, thereby enabling more comprehensive imaging of the battery cells and improving the accuracy of the battery cell's position and angle, i.e., improving the edge-wrapping precision of the battery cells. Furthermore, each camera 82 can move relative to the camera bracket 811 in the X and Y axes. This arrangement can accommodate battery cells of various sizes. The connection method between the cameras 82 and the camera bracket 811 can be any known and feasible method, as long as it achieves the above functions. Since it is not the inventive point of this utility model, it will not be elaborated here.

[0073] In this embodiment, the visual inspection device 8 is disposed between the feeding device 1 and the annular edge-wrapping device 3, and the guide member 7 also passes through the visual inspection device 8. Similarly, when the inspection bracket 81 includes two opposite connecting seats 812, the guide member 7 passes between the two connecting seats 812; when only one connecting seat 812 is provided, the connecting seat 812 is located on one side of the guide member 7.

[0074] Combination Figure 12 As shown, in this embodiment, the feeding device 1 includes:

[0075] Feeding conveyor 11;

[0076] The feeding and conveying device 12 is used to transport the battery cells to be wrapped on the feeding and conveying device 11 to the battery cell transfer device 5.

[0077] The feeding and conveying device 11 can be a belt conveyor or any other feasible conveying device.

[0078] The loading and conveying device 12 includes a loading seat 121, a first movable member 122 movably connected to the loading seat 121, a second movable member 123 movably connected to the first movable member 122, and a conveying member 124 connected to the second movable member 123. In this embodiment, the conveying member 124 is configured as a suction cup, which can be a vacuum suction cup or a Bernoulli suction cup. The suction cup can adsorb or release the battery cells.

[0079] The loading and conveying device 12 further includes a first driving device for driving the first moving member 122 to move left and right, and a second driving device (not shown) for driving the second moving member 123 to move up and down. The first driving device and the second driving device can be configured as cylinder-driven or motor-driven. Taking the second moving member 123 as an example, if it is cylinder-driven, the cylinder used to drive the second moving member 123 is connected to the first moving member 122, and its piston rod is connected to the second moving member 123.

[0080] The first moving part 122 is provided with a matching guide rail and slider structure 1210 between it and the loading seat 121. The second moving part 123 is also provided with a matching guide rail and slider structure 1230 between it and the first moving part 122. This not only makes the movement of the first moving part 122 and the second moving part 123 smoother, but also ensures the direction of their movement, thereby ensuring the determination of the position of the battery cell during the battery cell handling process.

[0081] Preferably, the feeding device 1 further includes a position sensor (not shown) for sensing whether a battery cell is being conveyed to the pre-alignment position, and a pre-alignment structure 13 for aligning the battery cell in the pre-alignment position.

[0082] In this embodiment, both the position sensor and the pre-alignment structure 13 are located at the tail of the feeding conveyor 11. The pre-alignment structure 13 includes two alignment members 131 located on both sides of the feeding conveyor 11. The two alignment members 131 are configured to move relatively close to or away from each other in a first direction, which is perpendicular to the conveying direction of the feeding conveyor 11. The pre-alignment of the battery cell is achieved by the two alignment members 131 clamping the two opposite sides of the battery cell.

[0083] The straightening component 131 includes a main body 1311 and two straightening portions 1312 spaced apart on the upper side of the main body 1311. The two straightening portions 1312 are distributed along the conveying direction of the conveying device, and the straightening portions 1312 are used to clamp the battery cells. The straightening portions 1312 can be fixedly connected to the main body 1311, or they can be rotatably connected to the main body 1311 about the Z-axis. Preferably, the straightening portions 1312 are cylindrical.

[0084] The pre-alignment structure 13 further includes a first guide member 132, and both alignment members 131 form a guide rail and slider cooperation with the first guide member 132. This allows for smoother movement of the two alignment members 131 and ensures their direction of movement, thereby guaranteeing stable pre-alignment of the battery cells. In this embodiment, the body and the slide rail form a guide rail and slider cooperation.

[0085] The relative movement of the two aligning components 131 can be driven by a cylinder, a motor, a lead screw, or any other known and feasible method.

[0086] The position sensor can be directly connected to a suitable position on the conveying device, or it can be connected to the main body 1311 of any of the correcting components 131 of the pre-correction structure 13.

[0087] The unloading device 2 includes an unloading and handling device 21 and an unloading and conveying device 22. The unloading and handling device 21 can transport the wrapped battery cells on the battery cell transfer device 5 to the unloading and conveying device 22.

[0088] The unloading and conveying device 21 has the same structure as the loading and conveying device 12, and it also moves the battery cells by means of a conveying component (suction cup) that can move up, down, left and right.

[0089] The unloading conveyor 22 can also be a belt conveyor or any other feasible conveyor, which receives the wrapped battery cells brought by the unloading and handling device 21 and transports them to the next step.

[0090] In this embodiment, the battery cell edge-wrapping device further includes a frame 9, on which the feeding device 1, unloading device 2, annular edge-wrapping device 3, ink supply device 4, two sets of battery cell transfer devices 5, and visual inspection device 8 are all mounted. Those skilled in the art should understand that related electronic control and circuit devices can be housed within the frame 9. The arrangement of these related electronic control and circuit devices (not shown in the figures) and their control connections with the aforementioned devices can be any known technology and are not the inventive point of this utility model; therefore, they will not be described in detail here.

[0091] The working principle of this battery cell edge-wrapping device is as follows:

[0092] The battery cells 10 are transported one by one to the conveying device of the feeding mechanism. The battery cells 10 move with the conveying device. When the position sensor detects that the battery cell has moved to the set pre-alignment position, the first driving device drives the two alignment members 131 of the pre-alignment structure 13 to move towards each other, so that the two alignment members 131 form a clamp on the two opposite sides of the battery cell, thereby performing preliminary alignment of the battery cell.

[0093] After pre-alignment, the first driving device drives the two alignment components 131 to move in opposite directions, disengaging from the clamping of the battery cell.

[0094] During the pre-alignment process, the suction cup has moved above the pre-alignment position; under the drive of the second drive device, the second moving part 123 moves downward together with the suction cup. After the suction cup adsorbs the pre-aligned battery cell, the second drive device drives the second moving part 123 to move upward together with the suction cup; then, the first drive device drives the first moving part 122 to move in the direction of the alignment mechanism.

[0095] When the suction cup of the feeding and conveying device 12 moves to the preset feeding and receiving position, one of the battery cell transfer devices 5 is already located below the suction cup; at this time, the suction cup moves down again, and when the battery cell is placed on the vacuum adsorption plate 54 of the battery cell transfer device 5, the suction cup releases its adsorption on the battery cell, while the vacuum adsorption plate 54 of the battery cell transfer device 5 adsorbs the battery cell, thereby completing the transfer of the battery cell.

[0096] The battery cell transfer device 5, which adsorbs the battery cells, moves to transfer the battery cells to the preset alignment position of the visual inspection device 8; the camera 82 on the alignment mechanism takes pictures of the battery cells and uploads them to the processor; one of the battery cell transfer devices 5 adjusts the battery cells in the X, Y, and Z directions according to the feedback results of the processor to ensure that the battery cells are in the optimal position for edge wrapping, thereby completing the alignment of the battery cells to be edge wrapped.

[0097] After alignment, one set of battery cell transfer devices 5 moves until the battery cell is located between the two support seats 311 of the annular edge-wrapping device 3 and below the annular guide rail 31; the support is driven to move upward relative to the moving seat 325, thereby driving the vacuum adsorption plate 54 and the battery cell to move upward until the battery cell moves to the preset edge-wrapping height position. At this time, the battery cell is located above the annular guide rail 31, and the edge-wrapping wheels 321 of the four edge-wrapping structures 32 are all located on the outside of the battery cell.

[0098] When the cylinder of the edge-wrapping structure 32 is activated, it pushes the moving seat 325 to move inward toward the annular guide rail 31, thereby extending the edge-wrapping wheel 321 to the position where it is in contact with the battery cell. The motor on the annular guide rail 31 controls the slider to move along the annular guide rail 31, thereby driving the edge-wrapping wheel 321 to move at high speed along the periphery of the battery cell. At the same time, the edge-wrapping wheel 321 itself also rotates, thereby coating the edge of the battery cell with ink. In this way, the edge-wrapping of the battery cell is completed.

[0099] While the battery cell on one of the battery cell transfer devices 5 is being edged, the other battery cell transfer device 5 has already received another battery cell at the preset discharge receiving position and moved it to the vision inspection device 8 for alignment.

[0100] After the edge wrapping of the battery cell on one of the battery cell transfer devices 5 is completed, the cylinder of the edge wrapping structure 32 drives the edge wrapping wheel 321 to disengage from the battery cell, and the support member is driven to move downward relative to the moving seat 325, thereby driving the vacuum adsorption plate 54 and the battery cell to move downward into the bracket of the annular edge wrapping device 3. Then, one of the battery cell transfer devices 5 drives the battery cell to move towards the unloading device 2 and disengage from the annular edge wrapping device 3; while the other battery cell transfer device 5, together with the battery cell that has been aligned, moves into the bracket of the annular edge wrapping device 3, and moves the battery cell on it to the edge-to-wrap position by driving the support member to move upward. The cylinder of the edge wrapping structure 32 then extends the edge wrapping wheel 321 to the edge wrapping starting position that is in contact with the battery cell to wrap the edge of the battery cell.

[0101] Before the battery cells in the other battery cell transfer device 5 are fully encased from entering the annular edge-wrapping device 3, one of the aforementioned battery cell transfer devices 5 first moves to a preset unloading and receiving position. The suction cup of the unloading and conveying device 21 moves downward to adsorb the battery cells that have already been encased. The vacuum suction plate 54 of the aforementioned battery cell transfer device 5 releases its adsorption on the battery cells, thereby completing the transfer of the encased battery cells. Afterward, the suction cup of the unloading and conveying device 21 moves upward and then towards the unloading device 2, and then moves downward to transfer the encased battery cells to the conveying device of the unloading device 2. At the same time, the aforementioned battery cell transfer device 5 The device moves to the preset feeding and receiving position, receiving a new battery cell from the feeding conveyor 11 that is adsorbed by the feeding and handling device 12, and moves it to the vision inspection device 8 for alignment. When the battery cell on the other battery cell transfer device 5 has completed the edge binding, the new battery cell on one of the battery cell transfer devices 5 has also completed the alignment operation. After the support member of the other battery cell transfer device 5 moves the battery cell down into place, the other battery cell transfer device 5 moves away from the annular edge binding device 3, and one of the battery cell transfer devices 5 moves the new battery cell to be edged into the bracket of the annular edge binding device 3. This process is repeated.

[0102] In other words, by setting up two sets of cell transfer devices 5, when one set of cell transfer devices 5 is carrying a cell and performing an edge-wrapping operation, the other set of cell transfer devices 5 is simultaneously moving and cooperating with other devices to perform other operations. This ensures that when the cell on one set of cell transfer devices 5 completes the edge-wrapping operation, the cell on the other set of cell transfer devices 5 has already completed the alignment and is ready. When the first set of cell transfer devices 5 leaves the annular edge-wrapping device 3, the other set of cell transfer devices 5 moves to the space between the two support seats 311 of the annular edge-wrapping device 3 and is located below the annular guide rail 31 to perform the edge-wrapping operation on a new cell. As set up as above, the time that the annular edge-wrapping device 3 spends waiting for cells can be saved, thereby greatly improving the overall production efficiency.

[0103] Although both sets of battery cell transfer devices 5 reciprocate along the extension direction of the guide member 7, they are located on opposite sides of the extension direction of the guide member 7. When one set of battery cell transfer devices 5 performs the edge-wrapping operation on the battery cell, its support moves upward relative to the moving seat 325 to the edge-wrapping height position; while after the other set of battery cell transfer devices 5 completes the edge-wrapping operation on the battery cell, its support moves downward relative to the moving seat 325 to a relatively lower relative height position. Therefore, when the two sets of battery cell transfer devices 5 move, their support members are at the same height position. As a result, the two sets of battery cell transfer devices 5 will not interfere with each other during the movement. That is, the two sets of battery cell transfer devices 5 do not interfere with each other and can operate independently.

[0104] Furthermore, because this invention employs a ring-shaped edge-wrapping device 3, and only one ring-shaped edge-wrapping device 3 is required, during edge wrapping, the four edge-wrapping structures 32 on the ring-shaped edge-wrapping device 3 move a set distance along the ring guide rail 31 to complete the edge wrapping of the entire edge of the battery cell. Thus, not only is the overall equipment cost relatively low, but the failure rate is also relatively low; moreover, completing the edge wrapping of a battery cell at once greatly reduces the time required for edge wrapping a single battery cell, thereby significantly improving the overall production efficiency of edge wrapping.

[0105] The terms "up," "down," "left," "right," "front," and "back" mentioned above are relative to the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and are not intended to 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 utility model. Furthermore, the orientation will change accordingly when the visual perspective changes.

[0106] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A battery cell edge-wrapping device, comprising a feeding device and a discharging device, characterized in that: Also includes: An annular edge-sealing device includes an annular guide rail and at least one edge-sealing structure, wherein the edge-sealing structure connects... It is located on the annular guide rail and can move along the annular guide rail; The ink supply device includes a hydraulic slip ring type ink supply structure, which includes a stator part and a rotor part rotatably connected to the stator part around the Z-axis. The stator part is provided with an ink supply passage, and the rotor part is provided with an ink distribution passage. The ink supply passage can communicate with the ink distribution passage, and an ink supply pipeline is connected between the edge-sealing structure and the ink distribution passage. Both sets of cell transfer devices can carry cells from the loading device and send them to the ring-shaped edge-wrapping device for ring-shaped edge-wrapping. After the edge-wrapping is completed, the cells are sent to the unloading device for unloading, and then moved back to the loading device to carry the cells. The two sets of cell transfer devices are designed to move independently without interfering with each other.

2. The edge-wrapping device for battery cells according to claim 1, characterized in that: Each of the aforementioned edge-sealing structures is connected to a recycling box, which is configured to collect ink falling from the edge-sealing structure; and the recycling box is configured to move along the annular guide rail together with the edge-sealing structure; the stator section is also provided with an ink return path spaced apart from the ink supply path, and the rotor section is also provided with a ink recovery path spaced apart from the ink distribution path, the ink return path being able to communicate with the ink recovery path, and the recycling box being connected to the ink recovery path through an ink return pipe.

3. The edge-wrapping device for battery cells according to claim 2, characterized in that: The annular edge-sealing device includes multiple edge-sealing structures arranged at intervals. The number of ink distribution channels and ink recovery channels in the rotor section corresponds to the number of edge-sealing structures. One ink distribution channel is connected to one edge-sealing structure through an ink supply pipe, and one ink recovery channel is connected to the recovery box through an ink return pipe.

4. The edge-wrapping device for battery cells according to claim 3, characterized in that: The stator section is provided with ink supply channels and ink return channels at intervals equal to the number of edge-sealing structures. One ink supply channel is connected to one ink distribution channel, and one ink return channel is connected to one ink recovery channel.

5. The edge-wrapping device for battery cells according to claim 4, characterized in that: The edge-sealing device for the battery cell also includes an ink supply container for storing ink and an ink storage container for storing recycled ink; each ink supply path is connected to the ink supply container through an ink supply main pipe, and each ink return path is connected to the ink storage container through an ink return main pipe.

6. The edge-wrapping device for battery cells according to any one of claims 2 to 5, characterized in that: The edge-binding structure includes a rotatable edge, an ink supply needle connected to the ink supply pipeline, and a scraper that can contact the edge of the edge; the outlet of the ink supply needle faces the edge of the edge, and the scraper is set to have an adjustable distance between itself and the edge of the edge; the edge portion is located on the upper side of the recycling box, and a portion is located outside the recycling box and facing the inner side of the circular track; the outlet of the ink supply needle is located on the upper side of the recycling box; the portion of the scraper used to contact the edge of the edge is also located on the upper side of the recycling box.

7. The edge-wrapping device for battery cells according to claim 6, characterized in that: The edging structure further includes an edging seat that can move along a circular guide rail, a movable seat that can be relatively moved and connected to the edging seat, and a wheel seat that is fixedly connected to the movable seat. The edging is rotatably connected to the upper end of the wheel seat. The recycling box is fixedly connected to the wheel seat.

8. The edge-wrapping device for battery cells according to claim 7, characterized in that: The wheel seat extends upward through the bottom wall of the recycling box and is fixedly connected to the bottom wall of the recycling box, and a sealing structure is provided between the bottom wall of the recycling box and the wheel seat.

9. The edge-wrapping device for solar cells according to any one of claims 1 to 5, 7 to 8, characterized in that: The battery cell transfer device includes a movable support, a movable bracket connected to the movable support that can move up and down relative to it, a connector connected to the upper side of the movable bracket, and a vacuum adsorption plate connected to the upper side of the connector; the vacuum adsorption plate is configured to move relative to the connector in the X-axis and Y-axis directions and rotate in the Z-axis direction.

10. The edge-wrapping device for battery cells according to claim 9, characterized in that: The connector is provided with a first adjusting member that can move relative to it in the X-axis direction, a second adjusting member that can be moved in the Y-axis direction is connected to the first adjusting member, a rotary drive member is connected to the second adjusting member, and the vacuum adsorption plate is connected to the upper end of the rotary drive member.

11. The edge-wrapping device for battery cells according to claim 9, characterized in that: It also includes a visual inspection device for detecting the position of the battery cell transfer device: based on the detection results of the visual inspection device, the battery cell transfer device adjusts the position of the battery cell by moving it in the X-axis direction and / or moving it in the Y-axis direction and / or rotating it around the Z-axis; the position adjustment and alignment must be completed before the battery cell is wrapped with annular edges.

12. The edge-wrapping device for battery cells according to claim 11, characterized in that: The battery cell edge-wrapping device also includes a guide member, which extends between the feeding device and the unloading device and passes under the annular guide rail. Two sets of battery cell transfer devices are respectively movably connected to two opposite sides of the guide member along its length.

13. The edge-wrapping device for solar cells according to any one of claims 1 to 5, 7 to 8, and 10 to 12, characterized in that: The feeding device includes a feeding conveying device, a feeding transport device for transporting the battery cells to be wrapped on the feeding conveying device to the battery cell transfer device, a position sensor for sensing whether a battery cell is being transported to the pre-alignment position, and a pre-alignment structure for aligning the battery cells in the pre-alignment position.

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