Novel pairing pre-welding equipment

Abstract

The utility model provides novel pairing pre-welding equipment, which belongs to the technical field of battery cell processing and comprises a workbench, a feeding module and a carrier circulating moving module are arranged at the upper end of the workbench in parallel, and a carrying module is arranged between the end of the feeding module and the end of the carrier circulating moving module. A weighing module, a thickness measuring module and a polarity detecting module are sequentially arranged on one side of the feeding module in the material conveying direction of the feeding module, and a battery cell overturning module, a pre-welding module and a discharging module are sequentially arranged on one side of the carrier circulating moving module in the direction opposite to the material conveying direction of the feeding module. According to the utility model, weight detection, thickness detection and tab polarity detection can be carried out on the battery cell firstly, so that various unqualified products are removed, the possibility of subsequent wrong tab welding accidents is reduced, the rejection rate of the whole equipment is further reduced, and the equipment has higher production benefits, higher stability and better maintainability.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery core processing, and particularly relates to a new type of paired pre-welding equipment. Background Art

[0002] As a new generation of green high-energy batteries with excellent performance, metal square-shell lithium-ion batteries are widely used in many fields such as new energy vehicles, mobile phones, laptops, tablets, etc. because of their high voltage, high capacity, low consumption, no memory effect, pollution-free, small size, low internal resistance, low self-discharge, and many cycles.

[0003] Currently, in the production of metal prismatic lithium-ion batteries, pre-welding equipment is typically located in the middle of the automotive power battery cell assembly section. Its function is to pre-weld the tabs together after the hot pressing of the cell. Furthermore, since the tabs are loose during cell winding, the pre-welding process after tab assembly is a crucial step in the entire production process. The quality of this welding directly impacts the performance and safety of the entire cell.

[0004] To ensure the welding quality and efficiency of the battery cell tabs, existing pre-welding equipment typically includes functions such as automatic loading and unloading, cell flipping and pairing, cell inspection, and tab pre-welding. Correspondingly, it is equipped with multiple devices, including a loading robot, an unloading robot, a conveyor, a cell inspection device, a cell flipping device, and a cell tab pre-welding device. Furthermore, in practice, existing pre-welding equipment employs a variety of routing and layout methods. However, existing pre-welding equipment often includes fewer inspection steps prior to pre-welding the cell tabs, which can easily lead to unnecessary processing by subsequent processing equipment, resulting in wasted resources and reduced production efficiency. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a new type of paired pre-welding equipment with a simple structure, high stability and good production efficiency, and to enable it to fully detect the status of the battery cell before pre-welding the battery cell tabs on the premise of meeting functional requirements, thereby having higher production efficiency, higher stability and better maintainability.

[0006] In order to solve the above technical problems, the present invention provides a new type of paired pre-welding equipment, which includes a workbench, a loading module and a carrier circulating moving module are arranged in parallel on the upper end of the workbench, a handling module is arranged between the end of the loading module and the end of the carrier circulating moving module, a weighing module, a thickness measuring module, and a polarity detection module are arranged in sequence on one side of the loading module along the material conveying direction of the loading module, and a battery cell flipping module, a pre-welding module and a unloading module are arranged in sequence on one side of the carrier circulating moving module along the direction opposite to the material conveying direction of the loading module. Based on this, since the present invention is provided with a weighing module, a thickness measuring module and a polarity detection module before the pre-welding station of the battery cell and the tab, the present invention can first perform weight detection, thickness detection, and tab polarity detection on the battery cell, thereby eliminating a variety of unqualified products to reduce the possibility of subsequent accidents of welding the wrong tab, thereby reducing the scrap rate of the entire equipment, and making it have higher production efficiency, as well as higher stability and better maintainability.

[0007] Furthermore, an NG pull belt 1 is provided between the thickness measuring module and the polarity detection module, and products that fail the thickness test and / or the weight test can be rejected by the NG pull belt 1.

[0008] Furthermore, a second NG pull belt is provided on one side of the transport module. The second NG pull belt is provided between the loading module and the carrier circulation module and is used to remove products that fail the tab polarity inspection.

[0009] Furthermore, a material unloading line is provided between the unloading module and the pre-welding module, and the unloading action and the finished material output action are realized through the cooperation between the material unloading line and the unloading module.

[0010] Furthermore, the loading module includes a loading bracket equipped with a dual-axis platform with both horizontal and vertical linear motion degrees of freedom. A terminal manipulator is mounted on the power output end of the dual-axis platform, and the dual-axis platform drives the terminal manipulator to move to the corresponding position to perform battery cell grabbing and placement actions. Furthermore, the structures of the handling module and unloading module can also adopt the same structure as the loading module.

[0011] Furthermore, the weighing module includes a weighing bracket, the lower end of which can be mounted on the ground, an electronic scale provided on the upper end of the weighing bracket, and a weighing jig provided above the electronic scale. In this way, when it is necessary to weigh and test the battery cells, the battery cells can first be placed on the weighing jig through the end manipulator of the loading module, and then the weighing jig is controlled to descend until the battery cells are placed on the electronic scale. At this time, the electronic scale weighs the battery cells, records and uploads the weighing data, and completes the weighing action; the weighed battery cells are then transported by the end manipulator of the loading module to the corresponding workstation of the thickness measuring module, and the weighing jig rises to wait for the next group of battery cells to be weighed. Moreover, in this process, since the utility model installs the weighing bracket on the ground, it can avoid the interference of machine vibration on the electronic scale, thereby ensuring the weighing accuracy.

[0012] Furthermore, the thickness measuring module includes a thickness measuring bracket, the upper part of the thickness measuring bracket is provided with a pressing battery cell assembly, the middle part of the thickness measuring bracket is provided with a thickness measuring sensor assembly, and the lower part of the thickness measuring bracket is horizontally slidably installed with a thickness measuring transfer jig assembly, and when the thickness measuring transfer jig assembly moves to the bottom of the pressing battery cell assembly, the battery cell placed on the thickness measuring transfer jig assembly is located in the test sensing area of the thickness measuring sensor assembly. In this way, when the battery cell is transported to the thickness measuring transfer jig assembly by the end manipulator of the loading module, the utility model can first clamp the battery cell by the clamping mechanism on the thickness measuring transfer jig assembly, and then transport the battery cell to the thickness measuring station by the thickness measuring transfer jig assembly, and compress the battery cell by the pressing battery cell assembly, and measure the thickness of the battery cell by the thickness measuring sensor assembly and upload it to the processing system to complete the corresponding thickness measurement action.

[0013] Furthermore, the polarity detection module includes a polarity detection workbench, the lower end of which is horizontally slidably mounted on the workbench via a linear module, the upper end of which is provided with a buffer jig and a detection jig, and a color sensor is provided on one side of the polarity detection workbench. Thus, when the battery cell is transported to the polarity detection module by the end manipulator of the loading module, if the incoming material is a pair of battery cells, it can first be placed on the detection jig, and then the polarity detection workbench is controlled to move. During the movement, the color sensor is used to detect the color of the battery cell tab to complete the tab polarity detection of the battery cell; if the incoming material is a single battery cell, it can first be placed on the buffer jig, and when a group of battery cells is gathered on the buffer jig, the end manipulator of the loading module can grab the group of battery cells and move them to the detection jig for polarity detection; and after the group of battery cells passes the test, the end manipulator of the transport module can transport them to the carrier circulation moving module; if the group of battery cells fails the test, the end manipulator of the transport module can transport them to the NG pull belt 2.

[0014] Furthermore, the cell flip module includes a flip bracket, which is vertically slidably mounted with a Z-axis mobile platform, which is equipped with a rotating manipulator. Thus, when the carrier circulating mobile module moves the battery cell to the cell flip module, the present invention can first use the rotating manipulator to grab and flip it, and then, in conjunction with the lifting and lowering of the Z-axis mobile platform, place the flipped battery cell on the circulating mobile jig of the carrier circulating mobile module to complete the corresponding cell flipping action.

[0015] Furthermore, the pre-welding module includes a welding machine transfer assembly, a cell pressing and tab gathering assembly, and the welding machine transfer assembly, cell pressing and tab gathering assembly are relatively arranged on both sides of the carrier circulating movement module. The welding machine transfer assembly is horizontally slidably installed on the workbench, and the welding machine transfer assembly carries a welding machine assembly and a dust removal assembly. The cell pressing and tab gathering assembly includes a pre-welding bracket installed on the workbench, and a cell pressing mechanism and a tab gathering mechanism are arranged on one end of the pre-welding bracket close to the welding machine transfer assembly.

[0016] It can be seen from the above technical solution that the utility model has the following advantages: since the utility model is provided with a weighing module, a thickness measuring module and a polarity detection module in front of the pre-welding station of the battery cell and the tab, the utility model can first perform weight detection, thickness detection and tab polarity detection on the battery cell, thereby eliminating a variety of unqualified products to reduce the possibility of subsequent accidents of incorrectly welding the tabs, thereby reducing the scrap rate of the entire equipment, and making it have higher production efficiency, as well as higher stability and better maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural diagram of a specific embodiment of the utility model;

[0019] Figure 2 This is a structural diagram of the feeding module in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the weighing module in the present utility model;

[0021] Figure 4 This is a schematic structural diagram of the thickness measurement module in the present utility model;

[0022] Figure 5 This is a schematic structural diagram of the polarity detection module in the present utility model;

[0023] Figure 6 This is a structural diagram of the battery cell flip module in the present invention;

[0024] Figure 7 This is a structural diagram of the pre-welding module in the present utility model.

[0025] In the figure: 1. Loading module; 2. Weighing module; 3. Thickness measurement module; 4. NG pull belt 1; 5. Polarity detection module; 6. Handling module; 7. NG pull belt 2; 8. Carrier circulation module; 9. Cell flip module; 10. Pre-welding module; 11. Unloading module; 12. Unloading material line; 13. Loading bracket; 14. Dual-axis platform; 15. End manipulator; 16. Weighing bracket; 17. Electronic scale; 18. Weighing and treatment Tools; 19. Thickness measuring bracket; 20. Thickness measuring and transferring jig assembly; 21. Compressing battery cell assembly; 22. Thickness measuring sensor assembly; 23. Linear module; 24. Color sensor; 25. Detection jig; 26. Cache jig; 27. Polarity detection workbench; 28. Flip bracket; 29. Z-axis moving platform; 30. Rotary manipulator; 31. Welding machine assembly; 32. Welding machine transferring assembly; 33. Compressing battery cell and gathering tab assembly. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, the utility model provides a new type of paired pre-welding equipment, which includes a workbench, and a loading module 1 and a carrier circulating moving module 8 are arranged in parallel on the upper end of the workbench, and a conveying module 6 is arranged between the end of the loading module 1 and the end of the carrier circulating moving module 8, and a weighing module 2, a thickness measuring module 3, an NG pull belt 4, and a polarity detection module 5 are arranged in sequence on one side of the loading module 1 along the material conveying direction of the loading module 1, and a battery cell flipping module 9, a pre-welding module 10, a material unloading line 12 and a unloading module 11 are arranged in sequence on one side of the carrier circulating moving module 8 along the direction opposite to the material conveying direction of the loading module 1, and an NG pull belt 2 7 is arranged on one side of the conveying module 6, and the NG pull belt 2 7 is arranged between the loading module 1 and the carrier circulating moving module 8.

[0028] Specifically, if Figure 2As shown, the loading module 1 includes a loading bracket 13, which is equipped with a dual-axis platform 14 with both horizontal and vertical linear motion degrees of freedom. An end-user manipulator 15 is mounted on the power output end of the dual-axis platform 14. The dual-axis platform 14 drives the end-user manipulator 15 to move to the corresponding position to grasp and place the battery cells. Furthermore, the structures of the handling module 6 and the unloading module 11 can also adopt the same structure as the loading module 1. Furthermore, the end-user manipulator 15 is preferably driven by an air-claw cylinder to ensure structural simplicity, low cost, and good maintainability. Furthermore, it can also adopt a commercially available structure equipped with a collision avoidance mechanism. In this way, when the end-user manipulator 15 collides with other mechanisms, the collision avoidance mechanism can absorb the pressure and deformation caused by the collision, protecting the end-user manipulator 15 and the battery cells. Furthermore, the end of the gripper of the end-user manipulator 15 can be manufactured using a polyurethane dipping process to ensure that it does not scratch the battery cells or adhere to the surface of the battery cells during the gripping process.

[0029] The driving source of the dual-axis platform 14 is preferably a brake-type servo drive motor, which not only has the advantages of fast speed, long transportation distance, small installation space, and large load, but also can ensure that the lifting axis of the dual-axis platform 14 will not fall in the power-off state, thereby improving the safety of the entire module.

[0030] like Figure 3 As shown, the weighing module 2 includes a weighing bracket 16, the lower end of which can be mounted on the ground. An electronic scale 17 is provided on the upper end of the weighing bracket 16, and a weighing jig 18 is provided above the electronic scale 17. Thus, when it is necessary to weigh the battery cells, the battery cells can first be placed on the weighing jig 18 by the end manipulator 15 of the loading module 1, and then the weighing jig 18 is controlled to descend until the battery cells are placed on the electronic scale 17. At this time, the electronic scale 17 weighs the battery cells and records and uploads the weighing data, completing the weighing operation. Subsequently, the weighed battery cells are transported by the end manipulator 15 of the loading module 1 to the corresponding station of the thickness measuring module 3, and the weighing jig 18 rises to wait for the next group of battery cells to be weighed. Moreover, during this process, since the utility model installs the weighing bracket 16 on the ground, it can avoid the interference of machine vibration on the electronic scale 17, thereby ensuring weighing accuracy. In addition, it should be noted that the weighing principle and weighing structure of the weighing fixture 18 and the electronic scale 17 are mature technologies on the market, so they will not be described in detail here.

[0031] like Figure 4As shown, the thickness measuring module 3 includes a thickness measuring bracket 19, the upper part of which is provided with a pressing cell assembly 21, the middle part of which is provided with a thickness measuring sensor assembly 22, and the lower part of the thickness measuring bracket 19 is horizontally slidably mounted with a thickness measuring transfer jig assembly 20, and when the thickness measuring transfer jig assembly 20 moves to the bottom of the pressing cell assembly 21, the cell placed on the thickness measuring transfer jig assembly 20 is located in the test sensing area of the thickness measuring sensor assembly 22. In this way, when the cell is transported to the thickness measuring transfer jig assembly by the end manipulator 15 of the loading module 1, the utility model can first clamp the cell by the clamping mechanism on the thickness measuring transfer jig assembly 20, and then transport the cell to the thickness measuring station by the thickness measuring transfer jig assembly, and compress the cell by the pressing cell assembly 21, and measure the thickness of the cell by the thickness measuring sensor assembly 22 and upload it to the processing system to complete the corresponding thickness measurement action. In addition, it should be noted that the thickness sensor assembly 22, the pressing battery cell assembly 21, and the thickness measuring and transplanting fixture assembly 20 are all mature technologies on the market, so they will not be described in detail here.

[0032] In addition, as a preference, when a compression cylinder is used as the driving source for the compression cell assembly 21, the utility model can configure an electric proportional valve on the air path of the compression cylinder, so that the pressure output by the compression cell assembly 21 can be controlled by adjusting the electric proportional valve; at the same time, the utility model can also configure a pressure sensor at the pressure head of the compression cell assembly 21, so that the utility model can monitor the pressure in real time, ensure that the thickness measurement pressure is the same each time, and minimize the measurement error.

[0033] like Figure 5 As shown, the polarity detection module 5 includes a polarity detection workbench 27, the lower end of the polarity detection workbench 27 is horizontally slidably mounted on the workbench through a linear module 23, the upper end of the polarity detection workbench 27 is provided with a buffer fixture 26 and a detection fixture 25, and a color sensor 24 is provided on one side of the polarity detection workbench 27.

[0034] In this way, when the battery cell is transported to the polarity detection module 5 by the end manipulator 15 of the loading module 1, if the incoming material is a pair of battery cells, that is, the two battery cells detected by the thickness measuring module 3 are both "OK" materials, they can be placed on the detection fixture 25 first, and then the polarity detection workbench 27 is controlled to move, and the color of the battery cell tab is detected by the color sensor 24 during the movement to complete the tab polarity detection of the battery cell; if the incoming material is a single battery cell, that is, one of the two battery cells detected by the thickness measuring module 3 is "NG" material and the other is "OK", Then, two battery cells can be grabbed at the same time, and the "NG" battery cell can be placed on the NG pull belt 4 and discharged by the NG pull belt 4. The "OK" material can be placed on the buffer fixture 26 first, and when a group of battery cells is gathered at the buffer fixture 26, the end robot 15 of the loading module 1 will grab the group of battery cells and take them to the detection fixture 25 for polarity detection. After the detection is qualified, the end robot 15 of the transport module 6 can transport it to the carrier circulation moving module 8. If the detection fails, the end robot 15 of the transport module 6 can transport it to the NG pull belt 2 7.

[0035] like Figure 6 As shown, the cell flip module 9 includes a flip bracket 28, on which a Z-axis mobile platform 29 is vertically slidably mounted. The Z-axis mobile platform 29 is provided with a rotary manipulator 30. Thus, when the carrier circulating mobile module 8 moves with the cell to the cell flip module 9, the present invention can first use the rotary manipulator 30 to grab and flip it, and then coordinate with the raising and lowering of the Z-axis mobile platform 29 to place the flipped cell on the circulating mobile fixture of the carrier circulating mobile module 8 to complete the corresponding cell flipping action.

[0036] like Figure 7 As shown, the pre-welding module 10 includes a welding machine transfer assembly 32, a cell pressing and tab gathering assembly 33, and the welding machine transfer assembly 32, the cell pressing and tab gathering assembly 33 are relatively arranged on both sides of the carrier circulating movement module 8. The welding machine transfer assembly 32 is horizontally slidably installed on the workbench, and the welding machine transfer assembly 32 carries a welding machine assembly 31 and a dust removal assembly. The cell pressing and tab gathering assembly 33 includes a pre-welding bracket installed on the workbench, and a cell pressing mechanism and a tab gathering mechanism are set on the pre-welding bracket at one end close to the welding machine transfer assembly 32.

[0037] In this way, since the utility model is provided with a weighing module 2, a thickness measuring module 3 and a polarity detection module 5 before the pre-welding station of the battery cell and the tab, the utility model can first perform weight detection, thickness detection and tab polarity detection on the battery cell, thereby eliminating a variety of unqualified products to reduce the possibility of subsequent accidents of welding the wrong tab, thereby reducing the scrap rate of the entire equipment, and making it have higher production efficiency, higher stability and better maintainability.

[0038] The terms "first," "second," "third," "fourth," and so on (if any) in the description and claims of the present invention and the accompanying drawings are used to distinguish similar items and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0039] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of paired pre-welding equipment, comprising a workbench, a loading module and a carrier circulating moving module are arranged in parallel at the upper end of the workbench, and a transport module is arranged between the end of the loading module and the end of the carrier circulating moving module; characterized in that: One side of the loading module is provided with a weighing module, a thickness measuring module, and a polarity detection module in sequence along the material conveying direction of the loading module, and one side of the carrier circulating moving module is provided with a battery cell flipping module, a pre-welding module and a unloading module in sequence along the direction opposite to the material conveying direction of the loading module.

2. The new pair pre-welding equipment according to claim 1 is characterized in that: An NG pull belt 1 is provided between the thickness measurement module and the polarity detection module.

3. The new pair pre-welding equipment according to claim 1 is characterized in that: A second NG pull belt is provided on one side of the transport module, and the second NG pull belt is provided between the loading module and the carrier circulation moving module.

4. The new pair pre-welding equipment according to claim 1 is characterized in that: A material unloading line is provided between the unloading module and the pre-welding module.

5. The new pair pre-welding equipment according to any one of claims 1 to 4, characterized in that: The loading module includes a loading bracket, which is provided with a dual-axis platform with both horizontal linear motion freedom and vertical linear motion freedom. The power output end of the dual-axis platform is installed with an end manipulator.

6. The new pair pre-welding equipment according to any one of claims 1 to 4, characterized in that: The weighing module includes a weighing bracket, the lower end of the weighing bracket can be installed on the ground, the upper end of the weighing bracket is provided with an electronic scale, and a weighing fixture is provided above the electronic scale.

7. The new pair pre-welding equipment according to any one of claims 1 to 4, characterized in that: The thickness measuring module includes a thickness measuring bracket, a compression battery cell assembly is provided on the upper part of the thickness measuring bracket, a thickness measuring sensor assembly is provided in the middle part of the thickness measuring bracket, and a thickness measuring transplanting jig assembly is horizontally slidably installed on the lower part of the thickness measuring bracket. When the thickness measuring transplanting jig assembly moves to the bottom of the compression battery cell assembly, the battery cell placed on the thickness measuring transplanting jig assembly is located in the test sensing area of the thickness measuring sensor assembly.

8. The new pair pre-welding equipment according to any one of claims 1 to 4, characterized in that: The polarity detection module includes a polarity detection workbench, the lower end of which is horizontally slidably mounted on the workbench through a linear module, a buffer fixture and a detection fixture are provided at the upper end of the polarity detection workbench, and a color sensor is provided on one side of the polarity detection workbench.

9. The new pair pre-welding equipment according to any one of claims 1 to 4, characterized in that: The battery cell flip module includes a flip bracket, which is vertically slidably installed with a Z-axis moving platform, and the Z-axis moving platform is provided with a rotating manipulator.

10. The new pair pre-welding equipment according to any one of claims 1 to 4, characterized in that: The pre-welding module includes a welding machine transfer assembly, a cell pressing and tab gathering assembly. The welding machine transfer assembly, cell pressing and tab gathering assembly are relatively arranged on both sides of the carrier circulating movement module. The welding machine transfer assembly is horizontally slidably installed on the workbench, and the welding machine transfer assembly carries a welding machine assembly and a dust removal assembly. The cell pressing and tab gathering assembly includes a pre-welding bracket installed on the workbench, and a cell pressing mechanism and a tab gathering mechanism are set on the end of the pre-welding bracket close to the welding machine transfer assembly.

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