Battery cell tab positioning mechanism
By designing the battery cell ear positioning mechanism, and using pneumatic finger-driven positioning members to accurately locate the ear, the problem of the position offset of the ear affecting the welding effect, and the accuracy of the welding and the stability of the welding effect are improved.
Patent Information
- Application Number
- CN202422133917.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the electrode joint welding of the battery cell, the position of the ear may be offset, affecting the welding effect.
A battery cell ear positioning mechanism is designed, including a base, a positioning assembly and an advance and retreat drive assembly. The positioning assembly uses a pneumatic finger to position the pole ear up and down, left and right to ensure that the pole ear is accurately positioned before welding.
By accurately positioning the pole ear, the accuracy of the pole ear weld is improved, ensuring the stability and consistency of the welding effect.
Smart Images
Figure CN223012953U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, and particularly relates to a positioning mechanism for cell tabs. Background Art
[0002] Cell tabs are metal conductors that lead out the positive and negative electrodes from a lithium-ion cell. Their function is to connect the electrodes inside the cell to an external circuit during battery assembly to achieve current input and output. Currently, a general cell usually has one positive tab and two negative tabs, and some cells have two positive tabs to enhance the positive conductivity. Therefore, it is necessary to weld the two positive tabs together, which is simply called tab welding. When the cell is conveyed to the welding station by the production line conveyor belt, the positions of the cell tabs may shift, thus affecting the welding effect. Therefore, it is necessary to position the tabs during tab welding.
[0003] Therefore, it is necessary to provide a positioning mechanism for cell tabs. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a positioning mechanism for cell tabs, which can accurately position the tabs during tab welding and ensure the welding effect.
[0005] To solve the above technical problem, the utility model adopts the following technical solutions:
[0006] A positioning mechanism for cell tabs includes a base, a positioning component, and an advancing and retracting driving component; a linear guide rail is arranged horizontally on the base; the positioning component is slidably arranged on the linear guide rail, and it includes a positioning bracket, a pneumatic finger, an upper positioning member, a lower positioning member, a left positioning member, and a right positioning member. The pneumatic finger is arranged on the positioning bracket, and the pneumatic finger is connected to the upper positioning member, the lower positioning member, the left positioning member, and the right positioning member, and is used to drive the upper positioning member, the lower positioning member, the left positioning member, and the right positioning member to perform up-and-down positioning and left-and-right positioning on the tabs; the advancing and retracting driving component is arranged on the base and connected to the positioning bracket, and is used to drive the positioning component to slide forward or backward along the linear guide rail.
[0007] In some embodiments, the positioning bracket includes a sliding seat, a vertical plate, and a support rod. The sliding seat is fixedly connected to the slider of the linear guide rail, the vertical plate is vertically fixed on the sliding seat, and the support rod is horizontally fixedly connected to the vertical plate and is located above the pneumatic finger; the pneumatic finger includes a cylinder body and two finger claws, the cylinder body is vertically installed on the vertical plate, and the two finger claws are arranged in parallel up and down at the front end of the cylinder body.
[0008] In at least one embodiment, the upper positioning member and the lower positioning member are respectively arranged on the upper and lower finger grippers. Both the upper positioning member and the lower positioning member include a clamping block and a first tab pressing block. The clamping block is fixedly connected to the finger gripper, and the first tab pressing block is fixedly connected to the clamping surface of the clamping block. The two finger grippers are used to drive the upper positioning member and the lower positioning member to perform opening and closing actions.
[0009] In at least one embodiment, the left positioning member and the right positioning member are arranged at the front end of the support rod at intervals in the front-rear direction and are respectively located on the left and right sides of the pneumatic finger. Both the left positioning member and the right positioning member include a swing arm, a connecting rod joint, and a connecting rod. The swing arm is in a C shape, and one end of the swing arm is rotatably connected to the support rod, and the other end is fixedly connected with a second tab pressing block. The connecting rod joint is fixedly connected to the upper clamping block, one end of the connecting rod is hinged to the swing arm, and the other end is hinged to the connecting rod joint. When the upper clamping block moves up and down, the swing arms on both sides are driven to perform opening and closing actions through the connecting rod.
[0010] The beneficial effects of the present utility model are as follows:
[0011] The present utility model is provided with a forward and backward driving component and a positioning component. The positioning component is driven by the forward and backward driving component to slide forward along the linear guide rail to the position of the tab of the battery cell, and then the pneumatic finger drives the upper positioning member, the lower positioning member, the left positioning member, and the right positioning member to perform up-and-down positioning and left-and-right positioning on the tab. Thus, the tab is accurately positioned up and down and left and right, thereby preparing for the combined welding of the tab, improving the welding accuracy, and ensuring the welding effect; when the combined welding of the tab is completed, the pneumatic finger drives the upper positioning member, the lower positioning member, the left positioning member, and the right positioning member to release the tab, and at the same time, the forward and backward driving component drives the positioning component to slide backward along the linear guide rail away from the tab of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Now, one or more embodiments of the present utility model will be described only by way of example with reference to the accompanying drawings, in which:
[0013] Figure 1 is a schematic structural diagram of an embodiment of the present application;
[0014] Figure 2 is Figure 1 a right view of the embodiment;
[0015] Figure 3 is Figure 1 a schematic structural diagram of the positioning component of the embodiment.
[0016] The reference numerals in the figure are: 1, base; 2, positioning component; 21, positioning bracket; 211, sliding seat; 212, vertical plate; 213, support rod; 22, pneumatic finger; 221, cylinder body; 222, finger gripper; 23, upper positioning member; 24, lower positioning member; 25, left positioning member; 26, right positioning member; 3, forward and backward drive component; 31, forward and backward cylinder; 32, floating joint; 33, forward and backward connecting plate; 4, linear guide rail; 41, guide rail body; 42, slider; 5, clamping block; 6, first tab pressing block; 7, swing arm; 71, second tab pressing block; 8, connecting rod joint; 9, connecting rod; 10, push-lock type speed control valve. Specific embodiments
[0017] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. It should be understood, however, that the present application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.
[0018] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "several" and "multiple" is two or more, unless otherwise specifically and clearly defined. In the present application, unless otherwise clearly specified and defined, the terms such as "install", "connect", "join", "fix", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0019] As Figures 1 to 3As shown in the figure, the pole ear positioning mechanism of the embodiment of the present application includes a base 1, a positioning component 2, and an advancing and retracting drive component 3. The base 1 is arranged on one side of the pole ear welding station. A linear guide rail 4 is arranged on the base 1 in the horizontal direction. The linear guide rail 4 includes a guide rail body 41 and a slider 42 slidably connected to the guide rail body 41. The positioning component 2 is installed on the slider 42 of the linear guide rail 4. The positioning component 2 includes a positioning bracket 21, a pneumatic finger 22, an upper positioning member 23, a lower positioning member 24, a left positioning member 25, and a right positioning member 26. The pneumatic finger 22 is arranged on the positioning bracket 21, and the pneumatic finger 22 is connected to the upper positioning member 23, the lower positioning member 24, the left positioning member 25, and the right positioning member 26, and is used to drive the upper positioning member 23, the lower positioning member 24, the left positioning member 25, and the right positioning member 26 to perform up-and-down positioning and left-and-right positioning on the pole ear. The advancing and retracting drive component 3 is arranged on the base 1 and connected to the positioning bracket 21, and is used to drive the positioning component 2 to slide forward or backward along the linear guide rail 4. When the positioning component 2 slides forward, it approaches the pole ear of the battery cell, and when it slides backward, it moves away from the pole ear of the battery cell.
[0020] The positioning bracket 21 includes a sliding seat 211, a vertical plate 212, and a support rod 213. The sliding seat 211 is fixedly connected to the slider 42 of the linear guide rail 4. The vertical plate 212 is vertically fixed on the sliding seat 211. The support rod 213 is horizontally fixedly connected to the vertical plate 212 and is located above the pneumatic finger 22. The pneumatic finger 22 includes a cylinder body 221 and two finger claws 222. The cylinder body 221 is vertically installed on the vertical plate 212. The two finger claws 222 are arranged in parallel up and down at the front end of the cylinder body 221.
[0021] Reference Figure 3 , optionally, the upper positioning member 23 and the lower positioning member 24 are respectively arranged on the upper and lower two finger claws 222. The upper positioning member 23 and the lower positioning member 24 both include a clamping block 5 and a first pole ear pressing block 6. The clamping block 5 is fixedly connected to the finger claw 222. The first pole ear pressing block 6 is fixedly connected to the clamping surface of the clamping block 5. Preferably, the pressing surface of the first pole ear pressing block 6 is a flat surface. The two finger claws 222 are used to drive the upper positioning member 23 and the lower positioning member 24 to perform opening and closing actions to perform up-and-down positioning on the pole ear.
[0022] Reference Figure 3Optionally, the left positioning member 25 and the right positioning member 26 are arranged at the front end of the support rod 213 at an interval, and are respectively located on the left and right sides of the pneumatic finger 22. The left positioning member 25 and the right positioning member 26 both include a swing arm 7, a connecting rod joint 8 and a connecting rod 9; the swing arm 7 is C-shaped, and one end of the swing arm 7 is rotatably connected to the support rod 213, and the other end is fixedly connected to the second pole ear pressure block 71. Preferably, a bearing is provided between the swing arm 7 and the support rod 213, and is connected through the bearing. The pressing surface of the second pole ear pressure block 71 is a plane; the connecting rod joint 8 is fixedly connected to the upper clamping block 5; one end of the connecting rod 9 is hinged to the swing arm 7, and the other end is hinged to the connecting rod joint 8. When the upper clamping block 5 moves up and down, the swing arms 7 on both sides are driven to open and close through the connecting rod 9 to position the pole ear left and right.
[0023] It should be noted that the sizes of the first tab pressing block 6 and the second tab pressing block 71 can be set according to the size of the tab, so that the tabs of different sizes can be accurately positioned in cooperation with the pneumatic fingers 22 .
[0024] Optionally, a push-lock type speed regulating valve 10 is provided on the pneumatic finger 22, and the push-lock type speed regulating valve 10 is used to adjust the air flow rate to achieve precise control of the movement speed of the pneumatic finger 22. The push-lock type speed regulating valve 10 also has a locking function, which can lock the movement of the pneumatic finger 22 at a specific position, thereby avoiding the displacement of the pole ear position when the pole ear is welded.
[0025] refer to Figure 1 In one embodiment, the advance and retreat drive assembly 3 includes an advance and retreat cylinder 31, a floating joint 32 and an advance and retreat connecting plate 33. The advance and retreat cylinder 31 is horizontally installed on the base 1, and the advance and retreat connecting plate 33 is fixedly connected to the slide 211. One end of the floating joint 32 is connected to the piston rod output end of the advance and retreat cylinder 31, and the other end is connected to the advance and retreat connecting plate 33.
[0026] The working principle of the tab positioning mechanism is:
[0027] The advance and retreat cylinder 31 pushes the positioning assembly 2 forward to the position of the battery cell tab, and then the upper and lower finger clamps 222 of the pneumatic finger 22 are closed, and the upper positioning piece 23 and the lower positioning piece 24 are closed, that is, the upper and lower groups of clamping blocks 5 and the first tab pressing block 6 are closed, which plays the role of positioning the tab up and down; at the same time, the upper clamping block 5 translates downward, and pulls the connecting rod 9 downward, thereby driving the swing arms 7 and the second tab pressing block 71 on both sides to close, which plays the role of positioning the tab left and right, thereby accurately positioning the tab up and down, left and right, and preparing for the tab welding; when the tab welding is completed, the finger clamps 222 open, the upper positioning piece 23, the lower positioning piece 24 and the swing arm 7 open, and then the advance and retreat cylinder 31 retreats, driving the positioning assembly 2 to retreat, and the working cycle is completed.
[0028] It should be understood that all of the above embodiments are exemplary rather than restrictive. Under the concept of the present utility model, any modifications, equivalent changes, and decorations made to the specific embodiments described above by those skilled in the art still fall within the scope of the technical solutions of the present utility model.
Claims
1. A battery cell tab positioning mechanism, characterized in that: It includes a base, a positioning assembly and an advance and retreat drive assembly; A linear guide rail is provided on the base in the horizontal direction; The positioning assembly is slidably arranged on the linear guide rail, and comprises a positioning bracket, a pneumatic finger, an upper positioning member, a lower positioning member, a left positioning member and a right positioning member. The pneumatic finger is arranged on the positioning bracket, and the pneumatic finger is connected with the upper positioning member, the lower positioning member, the left positioning member and the right positioning member, and is used to drive the upper positioning member, the lower positioning member, the left positioning member and the right positioning member to perform upper and lower positioning and left and right positioning on the tab; The forward and backward driving assembly is arranged on the base and connected to the positioning bracket, and is used for driving the positioning assembly to slide forward or backward along the linear guide rail.
2. The battery cell tab positioning mechanism according to claim 1, characterized in that: The positioning bracket includes a slide, a vertical plate and a support rod, the slide is fixedly connected to the slider of the linear guide rail, the vertical plate is vertically fixed on the slide, the support rod is horizontally fixedly connected to the vertical plate, and is located above the pneumatic finger; the pneumatic finger includes a cylinder body and two finger clamps, the cylinder body is vertically installed on the vertical plate, and the two finger clamps are arranged in parallel at the front end of the cylinder body.
3. The battery cell tab positioning mechanism according to claim 2, characterized in that: The upper positioning member and the lower positioning member are respectively arranged on the upper and lower finger clamps, and the upper positioning member and the lower positioning member both include a clamping block and a first pole ear pressure block. The clamping block is fixedly connected to the finger clamps, and the first pole ear pressure block is fixedly connected to the clamping surface of the clamping block. The two finger clamps are used to drive the upper positioning member and the lower positioning member to open and close.
4. The battery cell tab positioning mechanism according to claim 3, characterized in that: The left positioning member and the right positioning member are arranged at the front end of the support rod with a front-to-back interval, and are respectively located on the left and right sides of the pneumatic finger. The left positioning member and the right positioning member both include a swing arm, a connecting rod joint and a connecting rod. The swing arm is C-shaped, and one end of the swing arm is rotatably connected to the support rod, and the other end is fixedly connected to the second pole ear pressure block. The connecting rod joint is fixedly connected to the upper clamping block, one end of the connecting rod is hinged to the swing arm, and the other end is hinged to the connecting rod joint. When the upper clamping block moves up and down, the connecting rod drives the swing arms on both sides to open and close.
5. The battery cell tab positioning mechanism according to claim 4, characterized in that: A bearing is provided between the swing arm and the support rod.
6. The battery cell tab positioning mechanism according to claim 2, characterized in that: The advance and retreat drive assembly includes an advance and retreat cylinder, a floating joint and an advance and retreat connecting plate. The advance and retreat cylinder is horizontally installed on the base, and the advance and retreat connecting plate is fixedly connected to the slide seat. One end of the floating joint is connected to the piston rod output end of the advance and retreat cylinder, and the other end is connected to the advance and retreat connecting plate.
7. The battery cell tab positioning mechanism according to claim 1, characterized in that: The pneumatic finger is provided with a push-lock type speed regulating valve.