Automatic assembly platform for button cell

Abstract

The utility model relates to a button cell automatic assembly platform, including material preloading module, linear module, material moving device, material detection device, automatic sealing device, on -line resistance detection device and automatic liquid injection device, material preloading module is used for placing 7 kinds of materials needed for assembly, linear module drives material moving device to move in XYZ space, and material moving device includes material moving carousel and 14 vacuum suction heads arranged along the circumference of material moving carousel, and 14 vacuum suction heads correspond to adsorb material, automatic sealing device includes corresponding upper pressure head and lower pressure head, and lower pressure head is used as assembly platform to carry material, and lower pressure head rises to complete riveting pressure, on -line resistance detection device is embedded in upper pressure head, material moving device adsorbs material to carry out positioning and detection through material detection device, then in turn removes to lower pressure head, carries out liquid injection and riveting pressure operation, the utility model can effectively avoid the problem that material placement is not accurate and concentricity is not enough, guarantees the assembly accuracy of button cell.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and in particular to an automatic assembly platform for button batteries. Background Technology

[0002] Button cells, also known as coin cells, are shaped like buttons. Assembling a button cell requires stacking the first casing, electrode, separator, lithium sheet, gasket, spring, and second casing sequentially and then sealing them. Because the components are small and have different shapes, manual assembly can easily lead to inaccurate placement and difficulty in ensuring concentricity, resulting in lower assembly precision for button cells.

[0003] Therefore, how to provide an automated assembly platform for button cells that can improve assembly accuracy is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] This invention provides an automatic assembly platform for button batteries to solve the above-mentioned technical problems.

[0005] To address the aforementioned technical problems, this utility model provides an automatic assembly platform for button cells, comprising a material pre-loading module, a linear module, a material transfer device, a material detection device, an automatic sealing device, an online resistance detection device, and an automatic electrolyte injection device.

[0006] The material pre-loading module includes four material tray pre-loading modules and three material bin pre-loading modules. The four material tray pre-loading modules are used to lay out the first electrode shell, the second electrode shell, the lithium sheet and the separator, respectively. The three material bin pre-loading modules are used to stack the gasket, the spring sheet and the electrode sheet, respectively. The first electrode shell has a built-in QR code for storing the information of the corresponding electrode sheet later.

[0007] The linear module drives the material transfer device to move in the XYZ space. The material transfer device includes a material transfer turntable and 14 vacuum suction heads arranged circumferentially along the material transfer turntable. The 14 vacuum suction heads are used to adsorb 7 kinds of materials, and the same material is adsorbed twice.

[0008] The automatic sealing device includes two assembly stations, each assembly station including a corresponding upper pressure head and a lower pressure head. The lower pressure head serves as an assembly platform to support the material, and the lower pressure head rises to complete the riveting. The online resistance detection device is embedded in the upper pressure head.

[0009] The material pre-loading module, material detection device, and automatic liquid injection device are arranged around the automatic sealing device. The material transfer device adsorbs the material, which is then positioned and detected by the material detection device, and then sequentially transferred to the lower pressure head for liquid injection and riveting operations.

[0010] Preferably, the pre-assembly module includes a first fixture, a second fixture, a third fixture, and a fourth fixture arranged sequentially. The first fixture has a diaphragm placement hole for placing a diaphragm; the second fixture has a first electrode shell placement hole for placing a first electrode shell; the third fixture has a second electrode shell placement hole for placing a second electrode shell; and the fourth fixture has a lithium sheet placement hole for placing lithium sheets.

[0011] Preferably, the pre-loading module of the material tray further includes a fifth fixture, which is located near the automatic sealing device, and the fifth fixture has a battery placement hole for placing finished batteries.

[0012] Preferably, the information from the weighing of the electrode is saved by an electronic scale and uploaded to the button cell automatic assembly platform to establish a corresponding database; the material detection device sequentially scans the QR code on the first electrode shell and uploads the data of the corresponding electrode.

[0013] Preferably, the weighed electrode sheets are stacked in the hopper pre-loading module in the order of number 1 to 42.

[0014] Preferably, the button cell automated assembly platform further includes a scanning traceability system. Based on the scanning traceability system, a manual barcode scanner is used to scan the assembled finished battery and read the data stored in the first electrode shell.

[0015] Preferably, the pressing head corresponds to multiple gear positions, and the pressing head can be adjusted to different gear positions by rotation.

[0016] Preferably, the two assembly stations of the automatic sealing device are used alternately.

[0017] Preferably, the material detection device employs a camera lens.

[0018] Preferably, the automatic liquid injection device includes an injection needle and an electrolyte supply device connected to the injection needle.

[0019] Compared with the prior art, the automatic assembly platform for button batteries provided by this utility model has the following advantages:

[0020] 1. After the material is adsorbed by the material transfer device, the material detection device performs center positioning and foreign object identification on the adsorbed material, thereby effectively avoiding the problem of inaccurate material placement and insufficient concentricity, and ensuring the assembly accuracy of button batteries.

[0021] 2. This utility model uses the QR code on the first electrode shell itself to track and trace the information of each electrode sheet using a scanning traceability system, and there is no need for online inkjet printing, which greatly improves the assembly efficiency.

[0022] 3. This utility model embeds the online resistance detection device into the automatic sealing device, which optimizes the usage space of the device, reduces costs, and improves the open circuit voltage and resistance detection efficiency of button cells. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the automatic assembly platform for button batteries in a specific embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the material tray pre-assembly module in a specific embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the linear module in a specific embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the material transfer device in a specific embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the automatic sealing device in a specific embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the material detection device in a specific embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the automatic liquid injection device in a specific embodiment of the present invention.

[0030] In the diagram: 10-Material pre-loading module, 11-First fixture, 12-Second fixture, 13-Third fixture, 14-Fourth fixture, 15-Fifth fixture, 20-Linear module, 21-Drag chain, 30-Transfer device, 31-Transfer turntable, 32-Vacuum suction head, 40-Material detection device, 41-Camera lens, 50-Automatic sealing device, 51-Upper pressure head, 52-Lower pressure head, 60-Automatic liquid injection device, 61-Injection needle, 62-Electrolyte supply device. Detailed Implementation

[0031] To illustrate the technical solution of the above utility model in more detail, specific embodiments are listed below to demonstrate the technical effects; it should be emphasized that these embodiments are used to illustrate the present utility model and not to limit the scope of the present utility model.

[0032] The automatic assembly platform for button batteries provided by this utility model, such as Figures 1 to 7 As shown, it includes a material pre-loading module 10, a linear module 20, a material transfer device 30, a material detection device 40, an automatic sealing device 50, an online resistance detection device (not shown), and an automatic liquid injection device 60, wherein:

[0033] The material pre-loading module 10 includes four tray pre-loading modules and three hopper pre-loading modules. The four tray pre-loading modules are used to lay out the first electrode shell, the second electrode shell, the lithium sheet, and the separator, respectively. The three hopper pre-loading modules are used to stack the electrode sheets and auxiliary materials, including gaskets, spring sheets, or nickel mesh, for assembly. The first electrode shell has a built-in QR code for storing information such as the weight of the corresponding electrode sheet, which facilitates the tracking and traceability of each electrode sheet after assembly into a button battery. In this embodiment, the QR code is 3mm×3mm to 8mm×8mm in size and has at least the function of reading and storing information.

[0034] The linear module 20 drives the material transfer device 30 to move within the XYZ space via a drag chain 21 in the XYZ direction. The material transfer device 30 includes a material transfer turntable 31 and 14 vacuum suction heads 32 arranged circumferentially along the material transfer turntable 31. The 14 vacuum suction heads 32 are used to adsorb 7 kinds of materials, and the same material is adsorbed twice. That is, the linear module 20 drives the material transfer turntable 31 to move above the corresponding material, and the rotation of the material transfer turntable 31 controls the rotation of the vacuum suction head 32 to rotate above the corresponding material, and the vacuum suction head 32 achieves adsorption. After all 14 vacuum suction heads 32 have adsorbed the material, the material detection device 40 is required to locate and detect the center of the material, and then it is moved to the automatic sealing device 50 for assembly, thereby reducing the number of times the material transfer device 30 moves back and forth, reducing energy consumption and cost, and improving assembly efficiency.

[0035] The automatic sealing device 50 includes two assembly stations, each with a corresponding upper pressure head 51 and lower pressure head 52. The lower pressure head 52 serves as an assembly platform to support the material, and the upper pressure head 52 completes the riveting process. The online resistance detection device (probe) is embedded in the upper pressure head 51. The lower pressure head 52 is directly energized to cooperate with the probe to perform voltage testing on the assembled button cell. In this way, when the lower pressure head 52 rises to rivet, the open-circuit voltage and resistance of the finished button cell can be detected simultaneously without additional space or steps, thereby optimizing the device's usability, reducing costs, and improving the efficiency of open-circuit voltage and resistance detection for button cells.

[0036] The material pre-loading module 10, material detection device 40, and automatic liquid injection device 60 are arranged around the automatic sealing device 50, further reducing the moving distance of the linear module 20. The material transfer device 30 adsorbs the material and passes it through the material detection device 40. Specifically, in this embodiment, a camera lens is used to position and detect the material, and then it is sequentially transferred to the pressing head 52 for liquid injection and riveting operations. The entire device has a reasonable layout and can effectively avoid the problem of inaccurate material placement and insufficient concentricity, thus ensuring the assembly accuracy of the button cell battery.

[0037] In some embodiments, please refer to the following: Figure 2 The pre-loading module includes a first fixture 11, a second fixture 12, a third fixture 13, and a fourth fixture 14 arranged sequentially. The first fixture 11 has a diaphragm placement hole for placing a diaphragm; the second fixture 12 has a first electrode shell placement hole for placing a first electrode shell; the third fixture 13 has a second electrode shell placement hole for placing a second electrode shell; and the fourth fixture 14 has a lithium sheet placement hole for placing lithium sheets, facilitating direct adsorption by the transfer device. In some embodiments, the pre-loading module also includes hoppers for placing electrode sheets and auxiliary materials, with each hopper separately arranged for the transfer device 30 to pick up materials.

[0038] In some embodiments, please refer to Figure 2 The pre-loading module of the material tray also includes a fifth fixture 15, which is located near the automatic sealing device 50. The fifth fixture 15 has a battery placement hole for placing finished batteries, which facilitates the unloading of finished products.

[0039] In some embodiments, the information from the weighing of the electrode sheets can be saved by an electronic scale and uploaded to the automatic button cell assembly platform to establish a corresponding database. The material detection device 40 sequentially scans the QR codes on the first electrode shell and uploads the corresponding electrode data to complete data collection and storage, facilitating data traceability for subsequent assembly into button cells. In some embodiments, the weighed electrode sheets are stacked in the pre-assembly module of the hopper in the order of numbers 1 to 42, ensuring that the finished battery after electrode shell assembly accurately corresponds to the electrode sheets and their weights inside the battery, and also ensuring that the electrode weight and other information stored in the QR code corresponds to the finished battery.

[0040] In some embodiments, the button cell automatic assembly platform further includes a scanning traceability system (not shown). Based on the scanning traceability system, a person uses a barcode scanner to scan the assembled finished battery and read the data stored in the first electrode shell to achieve traceability.

[0041] In some embodiments, the pressing head 52 can correspond to multiple gear positions, and the pressing head 52 can be adjusted to different gear positions by rotation to adapt to various types of button batteries.

[0042] In some embodiments, the two assembly stations of the automatic sealing device 50 can be used alternately to further improve assembly efficiency.

[0043] In some embodiments, please refer to the following: Figure 7 The automatic liquid injection device 60 includes an injection needle 61 and an electrolyte supply device 62 connected to the injection needle 61 to achieve quantitative liquid injection.

[0044] The working process of the automatic button battery assembly platform provided by this utility model is as follows:

[0045] The first step involves manually punching and weighing the electrode sheets. After drying in an oven, they are stacked in the corresponding hoppers according to the order of 1 to 42 and then transferred to the glove box. At this time, the electrode sheet weight and other information are saved by an electronic scale and uploaded to the button cell automatic assembly platform, and a corresponding database is established.

[0046] The second step involves manually laying the first electrode shell, second electrode shell, lithium sheet, and separator with QR codes into a 6×7 tray, and stacking the gasket and spring sheet (nickel mesh) into the hopper.

[0047] In the third step, the linear module 20 drives the transfer turntable 31 to sequentially pick up two lithium sheets, the first electrode shell, the second electrode shell, the separator, the electrode sheet, the gasket, and the spring sheet.

[0048] Fourth, the linear module 20 moves the transfer turntable 31 above the material detection device 40, sequentially photographing and detecting the materials to perform center positioning and foreign object identification and removal. Additionally, the material detection device 40 scans the QR code on the first electrode shell and uploads the corresponding electrode data from the previous database.

[0049] Fifth step, the linear module 20 drives the transfer turntable 31 to place the first electrode shell and electrode sheet sequentially onto the lower pressure head 52 of the first assembly station of the automatic sealing device 50;

[0050] The sixth step involves the injection needle 61 on the automatic injection device 60 injecting a quantitative amount of liquid into the electrode at the first assembly station.

[0051] Step 7: The linear module 20 drives the transfer turntable 31 to place another first electrode shell and electrode sheet onto the lower pressure head 52 of the second assembly station of the automatic sealing device 50.

[0052] Step 8: The automatic liquid injection device 60 injects a quantitative amount of liquid into the electrode at the second assembly station.

[0053] In the ninth step, the linear module 20 drives the transfer turntable 31 to place the diaphragm at the first assembly station, and the injection needle 61 of the automatic injection device 60 performs a second quantitative injection of liquid into the material at the first assembly station.

[0054] Step 10: Linear module 20 drives material transfer turntable 31 to place lithium sheet, pad, spring sheet and second electrode shell in sequence on the first assembly station;

[0055] In the eleventh step, the pressing head 52 on the first assembly station rises to perform riveting and sealing, while the online resistance detection device performs open circuit voltage and resistance detection on the riveted button cell.

[0056] In the twelfth step, the linear module 20 drives the transfer turntable 31 to place another diaphragm on the second assembly station, and the injection needle 61 of the automatic injection device 60 performs a second quantitative injection of liquid on the material on the second assembly station.

[0057] In the thirteenth step, the linear module 20 drives the transfer turntable 31 to place the lithium sheet, pad, spring sheet and second electrode shell in sequence on the second assembly station;

[0058] Step 14: The pressing head 52 on the second assembly station rises to perform riveting and sealing, while the online resistance detection device detects the open circuit voltage and resistance of the riveted button cell.

[0059] Step 15: Transfer the finished button cells to the fifth fixture 15 until 42 cells are filled. Manually remove the tray for subsequent electrical performance testing.

[0060] This effectively improves the assembly precision and stability of button cells, and helps to increase the production efficiency of button cells.

[0061] In summary, the automatic assembly platform for button batteries provided by this utility model includes a material pre-loading module 10, a linear module 20, a material transfer device 30, a material detection device 40, an automatic sealing device 50, an online resistance detection device, and an automatic liquid injection device 70. The material pre-loading module 10 includes four tray pre-loading modules and three hopper pre-loading modules. The four tray pre-loading modules are respectively used to lay out the first electrode shell, the second electrode shell, the lithium sheet, and the separator. The three hopper pre-loading modules are respectively used to stack the electrode sheets, gaskets, spring sheets, or nickel mesh. The first electrode shell has a built-in QR code. The linear module 20 is used to store information such as the weight of the corresponding electrode sheet; the linear module 20 drives the transfer device 30 to move in the XYZ space. The transfer device 30 includes a transfer turntable 31 and 14 vacuum suction heads 32 arranged circumferentially along the transfer turntable 31. The 14 vacuum suction heads 32 are used to adsorb 7 kinds of materials, and the same material is adsorbed twice; the automatic sealing device 50 includes two assembly stations. Each assembly station includes a corresponding upper pressure head 51 and lower pressure head 52. The lower pressure head 52 serves as an assembly platform to carry materials. The lower pressure head 52 rises to complete the riveting. The online resistance detection device is embedded in the upper pressure head 51, and the lower pressure head 52 is directly energized to cooperate with the probe to perform voltage testing on the assembled button battery. The material pre-loading module 10, the material detection device 40, and the automatic liquid injection device 60 are arranged around the automatic sealing device 50. The material transfer device 30 adsorbs the material, which is positioned and detected by the material detection device 40, and then sequentially transferred to the lower pressure head 52 for liquid injection and riveting operations. This utility model can effectively avoid the problem of inaccurate material placement and insufficient concentricity, and ensure the assembly accuracy of the button battery.

[0062] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Therefore, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model also intends to include these modifications and variations.

Claims

1. An automated assembly platform for button cells, characterized in that, This includes a material pre-loading module, a linear module, a material transfer device, a material detection device, an automatic sealing device, an online resistance detection device, and an automatic liquid injection device. The material pre-loading module includes four material tray pre-loading modules and three material bin pre-loading modules. The four material tray pre-loading modules are used to lay out the first electrode shell, the second electrode shell, the lithium sheet and the separator, respectively. The three material bin pre-loading modules are used to stack the gasket, the spring sheet and the electrode sheet, respectively. The first electrode shell has a built-in QR code for storing information about the corresponding electrode sheet later. The linear module drives the material transfer device to move in the XYZ space. The material transfer device includes a material transfer turntable and 14 vacuum suction heads arranged circumferentially along the material transfer turntable. The 14 vacuum suction heads are used to adsorb 7 kinds of materials, and the same material is adsorbed twice. The automatic sealing device includes two assembly stations, each assembly station including a corresponding upper pressure head and a lower pressure head. The lower pressure head serves as an assembly platform to support the material, and the lower pressure head rises to complete the riveting. The online resistance detection device is embedded in the upper pressure head. The material pre-loading module, material detection device, and automatic liquid injection device are arranged around the automatic sealing device. The material transfer device adsorbs the material, which is then positioned and detected by the material detection device, and then sequentially transferred to the lower pressure head for liquid injection and riveting operations.

2. The automatic assembly platform for button batteries as described in claim 1, characterized in that, The pre-assembly module includes a first fixture, a second fixture, a third fixture, and a fourth fixture arranged in sequence. The first fixture has a diaphragm placement hole for placing a diaphragm; the second fixture has a first electrode shell placement hole for placing a first electrode shell; the third fixture has a second electrode shell placement hole for placing a second electrode shell; and the fourth fixture has a lithium sheet placement hole for placing lithium sheets.

3. The automatic assembly platform for button batteries as described in claim 2, characterized in that, The pre-loading module of the material tray also includes a fifth fixture, which is located near the automatic sealing device and has a battery placement hole for placing finished batteries.

4. The automatic assembly platform for button batteries as described in claim 1, characterized in that, The information from the weighing of the electrode sheets is saved by the electronic scale and uploaded to the button cell automatic assembly platform to establish a corresponding database; the material detection device sequentially scans the QR code on the first electrode shell and uploads the data of the corresponding electrode sheet.

5. The automatic assembly platform for button batteries as described in claim 4, characterized in that, The weighed electrode sheets are stacked in the hopper pre-assembly module in the order of number 1 to 42.

6. The automatic assembly platform for button batteries as described in claim 4, characterized in that, The automatic assembly platform for button cells also includes a scanning traceability system. Based on the scanning traceability system, a manual barcode scanner is used to scan the assembled finished battery and read the data stored in the first electrode shell.

7. The automatic assembly platform for button batteries as described in claim 1, characterized in that, The pressing head has multiple gear positions, and the pressing head can be adjusted to different gear positions by rotation.

8. The automatic assembly platform for button batteries as described in claim 1, characterized in that, The two assembly stations of the automatic sealing device are used alternately.

9. The automatic assembly platform for button batteries as described in claim 1, characterized in that, The material detection device uses a camera lens.

10. The automatic assembly platform for button batteries as described in claim 1, characterized in that, The automatic liquid injection device includes an injection needle and an electrolyte supply device connected to the injection needle.

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