Test fixture for tab metal strap
By designing a test fixture for the tab metal strip, the problem of low testing accuracy in the existing technology was solved, high-precision bending strength testing was achieved, the workload of staff was reduced, and the standardization of test results was ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, the bending strength test accuracy of the electrode metal strip is low, leading to battery performance degradation and safety risks.
A test fixture for tab metal strips is designed, including a first clamping component, a second clamping component and a drive mechanism, which can drive the other end of the tab metal strip to rotate at a preset angle to perform bending strength testing.
This improved the accuracy of bending strength testing for tab metal strips, reduced the workload of staff, and ensured the standardization and objectivity of test results.
Smart Images
Figure CN224081374U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery manufacturing technology, and in particular to a test fixture for electrode metal strips. Background Technology
[0002] Soft-pack lithium batteries are widely used in consumer electronics, new energy vehicles, and energy storage systems due to their advantages such as high energy density, lightweight design, and flexible packaging. The battery cell tabs, as key components connecting the internal electrode materials to the external circuitry, are typically made of aluminum or copper metal strips and must withstand repeated bending and stretching mechanical stresses during battery assembly, packaging, and use. Insufficient bending strength of the tab metal strips can easily lead to fatigue fracture, increased contact resistance, and other problems, subsequently causing battery performance degradation or even the risk of thermal runaway. Therefore, testing the bending strength of the tab metal strips is a crucial step in ensuring battery safety and reliability.
[0003] Currently, most companies rely on staff to manually test the bending strength of the tab metal strip. During the test, staff cannot accurately test the bending strength of the tab metal strip according to the preset bending angle, resulting in low test accuracy.
[0004] Therefore, there is an urgent need for a testing fixture for electrode metal strips to solve the above problems. Utility Model Content
[0005] The first objective of this invention is to provide a testing fixture for tab metal strips to solve the problem of low accuracy in manual bending strength testing of tab metal strips in the prior art.
[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:
[0007] The test fixture for the electrode metal strip includes:
[0008] The first clamping assembly is used to clamp one end of the electrode metal strip;
[0009] The second clamping assembly includes a first sector-shaped clamping member and a second sector-shaped clamping member disposed opposite to each other. The first sector-shaped clamping member and the second sector-shaped clamping member cooperate with each other to clamp the other end of the tab metal strip. One end of the first sector-shaped clamping member and one end of the second sector-shaped clamping member cooperate with each other to form an arc-shaped end of the second clamping assembly. The other end of the first sector-shaped clamping member and the other end of the second sector-shaped clamping member cooperate with each other to form a pointed end of the second clamping assembly. The pointed end is disposed opposite to the first clamping assembly in the vertical direction.
[0010] A drive mechanism is used to drive the arc-shaped end to rotate around the pointed end, so as to drive the other end of the tab metal strip to rotate.
[0011] Furthermore, the second clamping assembly also includes a mounting disk connected to the drive mechanism, wherein the first sector clamping member and the second sector clamping member are mounted on the end of the mounting disk away from the drive mechanism, and the pointed end is located at the center of the mounting disk.
[0012] Furthermore, the end face of the arc-shaped end is coplanar with the circumferential side surface of the mounting disk.
[0013] Furthermore, the driving mechanism includes a driving component and a transmission component, one end of the transmission component is connected to the driving component, and the other end of the transmission component is connected to the end of the mounting disk away from the first sector-shaped clamping member.
[0014] Furthermore, the test fixture for the tab metal strip also includes an L-shaped mounting frame, which includes a first mounting plate and a second mounting plate connected to each other. The first clamping assembly is mounted on the first mounting plate, the transmission assembly is mounted on one side of the second mounting plate, and the drive assembly is mounted on the side of the second mounting plate opposite to the transmission assembly.
[0015] Furthermore, a connecting shaft is provided at the end of the mounting disc away from the first sector-shaped clamping member. The transmission assembly includes a pneumatic movable rod and a meshing rack and gear. The driving assembly is used to drive the pneumatic movable rod to move along its axial direction. The rack is fixed to the pneumatic movable rod, and the gear is sleeved and fixed on the connecting shaft.
[0016] Furthermore, the drive assembly includes an air pump, a pressure gauge, a control valve, and an air pipe. The pressure gauge is used to measure the pressure value of the air pump, the air pipe is used to connect the air pump and the pneumatic actuator, and the control valve is used to control the connection state between the air pipe and the pneumatic actuator.
[0017] Furthermore, the first clamping assembly includes a first clamping block and a second clamping block disposed opposite to each other. The first clamping block has a clamping groove, and the clamping groove and the second clamping block are shaped to match each other. The second clamping block and the groove wall of the clamping groove cooperate with each other to clamp one end of the tab metal strip.
[0018] Furthermore, the first clamping assembly also includes a connecting base, of which two are provided and respectively connected to both sides of the first clamping block. The connecting base is used to connect the first clamping block and the first mounting plate.
[0019] Furthermore, the arc-shaped end rotates around the pointed end at an angle of 0-180°.
[0020] The beneficial effects of this utility model are:
[0021] This utility model provides a test fixture for tab metal strips, which includes a first clamping assembly, a second clamping assembly, and a driving mechanism. The first clamping assembly is used to clamp one end of the tab metal strip, and the second clamping assembly includes a first sector-shaped clamping member and a second sector-shaped clamping member arranged opposite to each other, which are used to clamp the other end of the tab metal strip. The first sector-shaped clamping member and the second sector-shaped clamping member are formed with an arc-shaped end and a pointed end. The pointed end is arranged opposite to the first clamping assembly in the vertical direction. The driving mechanism is used to drive the arc-shaped end to rotate around the pointed end, thereby driving the other end of the tab metal strip to rotate. When using this test fixture for tab metal strips, the first clamping component is used to clamp and fix one end of the tab metal strip. The pointed end is vertically opposite to the first clamping component. The other end of the tab metal strip extends from the pointed end between the first sector clamp and the second sector clamp. The first sector clamp and the second sector clamp are driven to clamp and fix the other end of the tab metal strip. The driving mechanism can drive the arc end to reciprocate around the pointed end according to a preset angle, so as to drive the other end of the tab metal strip to reciprocate and rotate, and perform bending strength testing on the tab metal strip with high testing accuracy. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of the test fixture for the electrode metal strip provided in this embodiment of the utility model;
[0024] Figure 2 yes Figure 1 The enlarged view of point A shown;
[0025] Figure 3 This is a structural schematic diagram of the test fixture for the electrode metal strip provided in this embodiment of the utility model from another perspective.
[0026] In the picture:
[0027] 1. First clamping assembly; 11. First clamping block; 12. Second clamping block; 13. Connecting base; 2. Second clamping assembly; 21. First sector-shaped clamping member; 22. Second sector-shaped clamping member; 23. Mounting disc; 24. Arc-shaped end; 25. Pointed end; 3. Drive mechanism; 31. Drive assembly; 311. Air pump; 312. Pressure gauge; 313. Control valve; 32. Transmission assembly; 4. Mounting bracket; 41. First mounting plate; 42. Second mounting plate. Detailed Implementation
[0028] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.
[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.
[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0033] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.
[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0035] This embodiment provides a test fixture for tab metal strips, which can perform bending strength tests on tab metal strips according to preset bending angles, with high test accuracy.
[0036] like Figure 1 As shown, in this embodiment, the test fixture for the electrode metal strip includes a first clamping assembly 1, a second clamping assembly 2, and a driving mechanism 3. Specifically, as... Figure 1 and Figure 2 As shown, the first clamping assembly 1 is used to clamp one end of the tab metal strip, and the second clamping assembly 2 includes a first sector clamping member 21 and a second sector clamping member 22 arranged opposite to each other. The first sector clamping member 21 and the second sector clamping member 22 cooperate with each other to clamp the other end of the tab metal strip. One end of the first sector clamping member 21 and one end of the second sector clamping member 22 cooperate with each other to form an arc end 24. The other end of the first sector clamping member 21 and the other end of the second sector clamping member 22 cooperate with each other to form a pointed end 25. The pointed end 25 is arranged opposite to the first clamping assembly 1 in the vertical direction. The driving mechanism 3 is used to drive the arc end 24 to rotate around the pointed end 25, so as to drive the other end of the tab metal strip to rotate. Understandably, when using this test fixture for tab metal strips, the first clamping component 1 is used to clamp and fix one end of the tab metal strip. The pointed end 25 is vertically opposite to the first clamping component 1. The other end of the tab metal strip extends from the pointed end 25 into the space between the first sector clamp 21 and the second sector clamp 22. The first sector clamp 21 and the second sector clamp 22 are driven to clamp and fix the other end of the tab metal strip. The driving mechanism 3 can drive the arc end 24 to reciprocate around the pointed end 25 at a preset angle, so as to drive the other end of the tab metal strip to reciprocate and perform bending strength testing on the tab metal strip with high testing accuracy.
[0037] Furthermore, it can be seen that by using the aforementioned test fixture for tab metal strips, during the bending strength test of tab metal strips, the operator only needs to install the tab metal strip onto the test fixture and control the operation status, which reduces the workload of the operator while achieving high testing accuracy.
[0038] For example, such as Figure 1 and Figure 2 As shown, in the vertical direction, the pointed end 25 is located above the first clamping assembly 1. When the bending strength test of the tab metal strip is performed, the tab metal strip located between the pointed end 25 and the first clamping assembly 1 is in a vertical state and does not change position. Only the tab metal strip located between the first fan-shaped clamping member 21 and the second fan-shaped clamping member 22, that is, the other end of the tab metal strip, reciprocates and bends relative to the tab metal strip located between the pointed end 25 and the first clamping assembly 1. The position of the tab metal strip at both ends of the bend is strictly controlled, which is conducive to further improving the test accuracy.
[0039] In this embodiment, the arc-shaped end 24 rotates around the pointed end 25 by an angle of 0-180°. For example... Figures 1-2 As shown, at this time, the second clamping component 2 is in the initial position, and the driving mechanism 3 can drive the arc end 24 to rotate 180° clockwise around the pointed end 25, that is, the maximum angle of rotation of the arc end 24 around the pointed end 25 is 180°. During this process, when the arc-shaped end 24 rotates 90° clockwise around the pointed end 25, the tab metal strip located between the first sector clamp 21 and the second sector clamp 22 is in the same direction as the tab metal strip located between the pointed end 25 and the first clamping assembly 1. At this time, the tab metal strip is in a straight state. Then, the arc-shaped end 24 continues to rotate 90° clockwise around the pointed end. At this time, the arc-shaped end 24 rotates a total of 180° around the pointed end 25. Then, it rotates 180° counterclockwise towards the initial position. Then, the above movement process is repeated. It can be seen that during the entire rotation of the arc-shaped end 24 around the pointed end 25, it is equivalent to driving the other end of the tab metal strip to rotate 90° clockwise and counterclockwise relative to the tab metal strip located between the pointed end 25 and the first clamping assembly 1, respectively, to perform a bending strength test on the tab metal strip. The bending angles in the clockwise and counterclockwise directions are the same, making the test results more objective and standardized.
[0040] Furthermore, such as Figures 1-3As shown, the second clamping assembly 2 also includes a mounting disk 23, which is connected to the drive mechanism 3. The first sector-shaped clamping member 21 and the second sector-shaped clamping member 22 are mounted on the end of the mounting disk 23 away from the drive mechanism 3, and the pointed end 25 is located at the center of the mounting disk 23. It can be understood that the pointed end 25 is located at the center of the mounting disk 23; in other words, the pointed end 25 is located along the axial direction of the mounting disk 23. When the drive mechanism 3 drives the mounting disk 23 to rotate, the arc-shaped end 24 can rotate around the pointed end 25. Furthermore, the mounting disk 23 provides a mounting position for the first sector-shaped clamping member 21 and the second sector-shaped clamping member 22. Compared to the drive mechanism 3 directly driving the arc-shaped end 24 to rotate around the pointed end 25, this improves the motion stability of the first sector-shaped clamping member 21 and the second sector-shaped clamping member 22 when clamping the other end of the tab metal strip for bending.
[0041] For example, the second clamping assembly 2 also includes a plurality of mounting members (not shown in the figure), the mounting disc 23 is provided with a plurality of mounting slots (not shown in the figure) spaced apart, the first sector clamping member 21 and the second sector clamping member 22 are both provided with a plurality of mounting holes (not shown in the figure), the plurality of mounting members correspond one-to-one with the plurality of mounting slots and one-to-one with the plurality of mounting holes. The mounting components can pass through the mounting holes and mounting slots to fix the first sector-shaped clamping component 21 and the second sector-shaped clamping component 22 onto the mounting disk 23. In actual use, the other end of the tab metal strip extends from the pointed end 25 between the first sector-shaped clamping component 21 and the second sector-shaped clamping component 22, driving the first sector-shaped clamping component 21 and the second sector-shaped clamping component 22 to clamp and fix the other end of the tab metal strip. Then, multiple mounting components are provided in the corresponding mounting holes and mounting slots to fix the position of the first sector-shaped clamping component 21 and the second sector-shaped clamping component 22 relative to the mounting disk 23, thereby improving the clamping stability of the first sector-shaped clamping component 21 and the second sector-shaped clamping component 22 on the other end of the tab metal strip. Of course, in other embodiments, other structures can be used to fix the first sector-shaped clamping component 21 and the second sector-shaped clamping component 22 to meet the usage requirements. This embodiment will not elaborate on this.
[0042] Furthermore, the end face of the arc-shaped end 24 is coplanar with the circumferential side surface of the mounting disk 23. In actual operation, this makes it easier to observe whether the end face of the arc-shaped end 24 is aligned with the circumferential side surface of the mounting disk 23, so as to further determine whether the pointed end 25 is located at the center of the mounting disk 23. This also avoids interference between the arc-shaped end 24 and the structure on the outer circumference of the mounting disk 23, ensuring stable movement.
[0043] Furthermore, the drive mechanism 3 includes a drive assembly 31 and a transmission assembly 32. One end of the transmission assembly 32 is connected to the drive assembly 31, and the other end of the transmission assembly 32 is connected to the end of the mounting disc 23 away from the first sector-shaped clamping member 21. It is understood that connecting the other end of the transmission assembly 32 to the end of the mounting disc 23 away from the first sector-shaped clamping member 21 avoids interference between the transmission assembly 32 and the first and second sector-shaped clamping members 21, and facilitates the installation of the tab metal strip.
[0044] Furthermore, such as Figure 1 As shown, the test fixture for the tab metal strip also includes an L-shaped mounting frame 4. The mounting frame 4 includes a first mounting plate 41 and a second mounting plate 42 connected to each other. A first clamping assembly 1 is mounted on the first mounting plate 41, a transmission assembly 32 is mounted on one side of the second mounting plate 42, and a drive assembly 31 is mounted on the side of the second mounting plate 42 opposite to the transmission assembly 32. Specifically, the first mounting plate 41 is horizontally arranged, the second mounting plate 42 is vertically arranged, and the mounting disc 23 is mounted on the side of the transmission assembly 32 opposite to the second mounting plate 42. It can be understood that by setting the drive assembly 31 and the transmission assembly 32 on opposite sides of the second mounting plate 42, the space occupied by the drive assembly 31 on the side of the second mounting plate 42 closest to the transmission assembly 32 is reduced, which facilitates the installation of the second clamping assembly 2 and the transmission assembly 32. Furthermore, by mounting the drive assembly 31 on the side of the second mounting plate 42 opposite to the transmission assembly 32, it is easier for operators to operate the drive assembly 31 without interfering with the movement of the transmission assembly 32 and the second clamping assembly 2.
[0045] For example, a connecting shaft (not shown in the figure) is provided at the end of the mounting disc 23 away from the first sector-shaped clamp 21. The driven assembly 32 includes a pneumatic movable rod (not shown in the figure) and a meshing rack (not shown in the figure) and gear (not shown in the figure). The drive assembly 31 is used to drive the pneumatic movable rod to move along its axial direction. The rack is fixed to the pneumatic movable rod, and the gear is sleeved and fixed on the connecting shaft. Specifically, the axis of the connecting shaft coincides with the axis of the mounting disc 23. The rack is provided at the end of the piston rod (not shown in the figure) of the pneumatic movable rod, and the extension direction of the rack is parallel to the axial direction of the piston rod. It is understood that the drive assembly 31 drives the piston rod of the pneumatic actuator to reciprocate along its axial direction. During the movement, the rack drives the gear to rotate, and then drives the mounting disc 23 to rotate around its center through the connecting shaft, thereby causing the arc-shaped end 24 to rotate around the pointed end 25, and bending the other end of the electrode metal strip. The axial reciprocating motion of the pneumatic actuator drives the arc-shaped end 24 to reciprocate around the pointed end 25, resulting in stable movement. The specific structure and operation of the pneumatic actuator, rack, and gear are all existing technologies and will not be described in detail in this embodiment.
[0046] Of course, other types of transmission components 32 can also be used in other embodiments. For example, the transmission component 32 may also include a pneumatic actuator and a crank-slider mechanism (not shown in the figure). Specifically, one end of the crank (not shown in the figure) is hinged to one end of the connecting rod (not shown in the figure), the end of the piston rod of the pneumatic actuator is connected to the other end of the connecting rod through a hinge, and the other end of the crank is connected to a connecting shaft. When the piston rod of the pneumatic actuator reciprocates along its axial direction, it drives the mounting disk 23 to rotate through the crank-slider mechanism. The specific structure and operation of the crank-slider mechanism are common knowledge and will not be described in detail.
[0047] Furthermore, such as Figure 3 As shown, the drive assembly 31 includes an air pump 311, a pressure gauge 312, a control valve 313, and air pipes (not shown in the figure). The pressure gauge 312 is used to measure the pressure value of the air pump 311. The air pipes are used to connect the air pump 311 and the pneumatic actuator. The control valve 313 is used to control the connection state between the air pipes and the pneumatic actuator. Specifically, there are two air pipes, one end of which is connected to the air pump 311. One air pipe is connected to the front end of the cylinder of the pneumatic actuator through the control valve 313, and the other air pipe is connected to the rear end of the cylinder of the pneumatic actuator through the control valve 313. Understandably, the air pump 311 is connected to the pneumatic actuator via an air pipe, providing gas to drive the actuator's movement. The pressure gauge 312 measures the pressure value of the pneumatic actuator to ensure it remains within a reasonable range and guarantees operational safety. The control valve 313 controls the connection between the air pipe and the pneumatic actuator. When the disc 23 needs to move clockwise, the control valve 313 is activated, connecting the air pipe to the rear end of the pneumatic actuator's cylinder, thus pushing the piston rod of the pneumatic actuator to extend axially. The pneumatic actuator moves the mounting disc 23 clockwise, causing the other end of the tab metal strip to move clockwise, thus bending the tab metal strip clockwise. When the mounting disc 23 needs to move counterclockwise, the actuator control valve 313 is activated, connecting the air pipe to the front end of the cylinder of the pneumatic actuator rod. This causes the piston rod of the pneumatic actuator rod to retract axially, causing the mounting disc 23 to move counterclockwise, thus bending the tab metal strip counterclockwise. In other words, the actuator control valve 313 controls the movement of the pneumatic actuator rod, causing the arc-shaped end 24 to rotate around the pointed end 25, which in turn causes the other end of the tab metal strip to rotate, thus bending the tab metal strip.
[0048] Furthermore, the first clamping assembly 1 includes a first clamping block 11 and a second clamping block 12 disposed opposite to each other. The first clamping block 11 has a clamping groove (not shown in the figure), and the clamping groove and the second clamping block 12 are shaped to fit together. The second clamping block 12 cooperates with the groove wall to clamp one end of the tab metal strip. It can be understood that the clamping of one end of the tab metal strip is achieved by the cooperation of the groove wall and the second clamping block 12. The second clamping block 12 can be located in the clamping groove or moved out of the clamping groove, making it convenient to clamp or release one end of the tab metal strip.
[0049] Furthermore, the first clamping assembly 1 also includes a connecting base 13. There are two connecting bases 13, which are respectively connected to the two sides of the first clamping block 11. The connecting base 13 is used to connect the first clamping block 11 and the first mounting plate 41. This arrangement is equivalent to fixing the first clamping block 11 to the first mounting plate 41. When the first clamping block 11 and the second clamping block 12 clamp one end of the tab metal strip, it is more stable, and only the second clamping block 12 needs to be moved, making the operation more convenient.
[0050] Furthermore, the first clamping assembly 1 also includes a fixing member (not shown in the figure). A first fixing hole (not shown in the figure) is provided on the side wall of the clamping groove, and a corresponding second fixing hole (not shown in the figure) is provided on the second clamping block 12. The fixing member can pass through and be fixed in both the second fixing hole and the first fixing hole to fix the second clamping block 12 within the clamping groove. It can be understood that when the first clamping block 11 and the second clamping block 12 clamp one end of the tab metal strip, the fixing member secures the second clamping block 12 within the clamping groove, clamping one end of the tab metal strip and preventing the second fixing block from moving relative to the clamping groove, thus improving the clamping stability of the tab metal strip. In this embodiment, both the first clamping block 11 and the second clamping block 12 are made of metal.
[0051] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. A test fixture for electrode metal strips, characterized in that, include: The first clamping assembly (1) is used to clamp one end of the electrode metal strip; The second clamping assembly (2) includes a first sector-shaped clamping member (21) and a second sector-shaped clamping member (22) arranged opposite to each other. The first sector-shaped clamping member (21) and the second sector-shaped clamping member (22) cooperate with each other to clamp the other end of the tab metal strip. One end of the first sector-shaped clamping member (21) and one end of the second sector-shaped clamping member (22) cooperate with each other to form the arc-shaped end (24) of the second clamping assembly (2). The other end of the first sector-shaped clamping member (21) and the other end of the second sector-shaped clamping member (22) cooperate with each other to form the pointed end (25) of the second clamping assembly (2). The pointed end (25) is arranged opposite to the first clamping assembly (1) in the vertical direction. The driving mechanism (3) is used to drive the arc-shaped end (24) to rotate around the pointed end (25) so as to drive the other end of the tab metal strip to rotate.
2. The test fixture for the electrode metal strip according to claim 1, characterized in that, The second clamping assembly (2) further includes a mounting disk (23) connected to the drive mechanism (3), the first sector clamping member (21) and the second sector clamping member (22) are mounted on the end of the mounting disk (23) away from the drive mechanism (3), and the pointed end (25) is located at the center of the mounting disk (23).
3. The test fixture for the electrode metal strip according to claim 2, characterized in that, The end face of the arc-shaped end (24) is coplanar with the circumferential side surface of the mounting disk (23).
4. The test fixture for the electrode metal strip according to claim 2, characterized in that, The drive mechanism (3) includes a drive assembly (31) and a transmission assembly (32). One end of the transmission assembly (32) is connected to the drive assembly (31), and the other end of the transmission assembly (32) is connected to the end of the mounting disc (23) away from the first sector clamp (21).
5. The test fixture for the electrode metal strip according to claim 4, characterized in that, The test fixture for the tab metal strip also includes an L-shaped mounting bracket (4), which includes a first mounting plate (41) and a second mounting plate (42) connected to each other. The first clamping assembly (1) is mounted on the first mounting plate (41), the transmission assembly (32) is mounted on one side of the second mounting plate (42), and the drive assembly (31) is mounted on the side of the second mounting plate (42) opposite to the transmission assembly (32).
6. The test fixture for the electrode metal strip according to claim 5, characterized in that, The mounting disc (23) has a connecting shaft at one end away from the first sector clamp (21). The transmission assembly (32) includes a pneumatic moving rod and meshing rack and gear. The drive assembly (31) is used to drive the pneumatic moving rod to move along its axial direction. The rack is fixed to the pneumatic moving rod, and the gear is sleeved and fixed on the connecting shaft.
7. The test fixture for the electrode metal strip according to claim 6, characterized in that, The drive assembly (31) includes an air pump (311), a pressure gauge (312), a control valve (313), and an air pipe. The pressure gauge (312) is used to measure the pressure value of the air pump (311). The air pipe is used to connect the air pump (311) and the pneumatic actuator. The control valve (313) is used to control the connection state between the air pipe and the pneumatic actuator.
8. The test fixture for the electrode metal strip according to claim 5, characterized in that, The first clamping assembly (1) includes a first clamping block (11) and a second clamping block (12) disposed opposite to each other. The first clamping block (11) has a clamping groove. The clamping groove and the second clamping block (12) are shaped to match each other. The second clamping block (12) and the groove wall of the clamping groove cooperate with each other to clamp one end of the tab metal strip.
9. The test fixture for the electrode metal strip according to claim 8, characterized in that, The first clamping assembly (1) further includes a connecting base (13), and there are two connecting bases (13), which are respectively connected to the two sides of the first clamping block (11). The connecting base (13) is used to connect the first clamping block (11) and the first mounting plate (41).
10. The test fixture for electrode metal strips according to any one of claims 1-9, characterized in that, The arc-shaped end (24) rotates around the pointed end (25) by an angle of 0-180°.