Flexible battery testing device

Abstract

The invention discloses a flexible battery testing device, and the device comprises a tool frame which is provided with two moving seats. The first rotating seat is arranged on the moving seat and can rotate along a rotating shaft A; the second rotating seat is arranged on the first rotating seat and can rotate along a rotating shaft B; wherein the second rotating seat is provided with a clamp, and the clamp can rotate until the center line C of the clamp is perpendicular to the rotating shaft B or parallel to the rotating shaft B. The flexible battery testing device further comprises a hinting module used for identifying the rotating amplitude of the rotating shaft of the clamp. The invention relates to the technical field of battery performance testing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery performance testing, and more particularly to a flexible battery testing device. BACKGROUND

[0002] In recent years, flexible electronic devices have gradually begun to be popular. Compared with the mature rigid structure, flexible devices have the characteristics of being bendable, twistable, curlable and stretchable to a certain extent. They not only bring revolutionary innovation and opportunities to the traditional electronic industry, such as flexible display screens, but also show bright application prospects in the field of medical care, such as intelligent electronic skin, artificial organs, wearable health monitoring bracelets, etc. With the development of flexible electronic devices, flexible batteries have become an important research topic. Among them, lithium ion batteries are usually used as power supplies for flexible electronic devices, but the power density of lithium ion batteries is difficult to meet the demand for working endurance of advanced electronic devices. Therefore, developing other new energy storage technologies with high energy density is still a great challenge. Among the battery systems similar to lithium ion batteries, metal-air batteries are attracting attention due to their unique semi-open structure. This structure can utilize atmospheric oxygen. For example, the theoretical energy density of a zinc-air battery (1086 Wh kg-1) is about three times that of a lithium ion battery (theoretical value ~ 400 Wh kg-1), and the manufacturing cost is lower. Moreover, it can be effectively charged in an alkaline electrolyte, and is a very promising secondary battery, which is expected to replace lithium ion batteries and be applied to flexible electronic devices.

[0003] Flexible metal-air batteries usually adopt a "sandwich" form of structural design. The negative electrode is a layer of metal foil, the positive electrode is a carbon cloth as a substrate and coated with a nano catalyst, and a layer of flexible electrolyte film is sandwiched between the positive and negative electrodes. The charge generated by the electrochemical reaction is guided out by the current collector outside the positive and negative electrodes, and connected to the two ends of the direct current load to supply power to the load. As a power supply for flexible devices, it is often subjected to various external forces, thereby producing various deformations, such as stretching, bending, twisting, and repeated deformation. Therefore, it is necessary to investigate the performance changes of the flexible power supply under different external forces and repeated external forces to evaluate the electrochemical stability and mechanical stability of the battery, and to study the performance degradation mechanism and failure mechanism of the battery. At present, the testing and evaluation of flexible metal-air batteries are mostly carried out under static conditions, and the testing and evaluation under dynamic deformation conditions are very rough. The main reason is the lack of accurate dynamic testing devices and reasonable dynamic performance evaluation methods. SUMMARY

[0004] In view of the deficiencies and shortcomings of the prior art, a testing device is provided to meet the testing requirements of flexible batteries.

[0005] A flexible battery testing device, comprising: Tooling frame, two moving seats are arranged on the tooling frame; The first rotating seat is arranged on the moving seat and can rotate along the rotating shaft A; The second rotating seat is arranged on the first rotating seat and can rotate along the rotating shaft B; The second rotating seat is provided with a clamp, The clamp can be rotated to an angle in which the center line C is perpendicular to the rotating shaft B or parallel to the rotating shaft B, Stretch detection: By rotating the first rotating seat, the rotating shaft B of the two second rotating seats is in a state of extending forward and backward and being parallel to each other, The clamp is rotated to the center line C perpendicular to the rotating shaft B, The two clamps clamp the flexible battery, and the flexible battery is stretched through the forward and backward movement of the moving seat; Bending detection: The second rotating seat is rotated, and the forward and backward movement of the moving seat is matched to bend the flexible battery, Torsion detection: By rotating the first rotating seat, the rotating shaft B of the two second rotating seats is in a state of extending left and right and being parallel to each other, The clamp is rotated to the center line C parallel to the rotating shaft B, The second rotating seat is rotated to force the battery between the two clamps to twist; It also includes a demonstration module for identifying the rotation amplitude of the clamp rotating shaft.

[0006] After adopting the above structure, the flexible battery testing device of the present application has the following advantages compared with the prior art: The device can control the three conditions of stretching, bending and twisting of the flexible battery, The flexible metal air battery is clamped by two clamps at both ends, and the positive and negative electrode leads of the battery are connected to the battery testing instrument, so that the I-V charge and discharge performance and long-term stability test function of the battery under different conditions and indicators can be realized.

[0007] Meet the various test requirements of dynamic performance in the research and development of flexible metal air batteries, on the one hand, reliable data can be obtained online, and on the other hand, the time of researchers can be saved.

[0008] As an improvement of the present application, the tooling frame is provided with a left and right extending track, and the moving seat is provided with a sliding block in sliding cooperation with the track; The tooling frame is provided with a left and right extending rack, The motor is arranged on the moving seat, the motor is drivingly connected with a gear, and the gear is meshingly connected with the rack.

[0009] As an improvement of the present application, the second rotating seat is provided with a support, The support has a first connecting groove and a second connecting groove arranged at an angle of 90 degrees, wherein the first connecting groove extends forward and backward in line with the axis B, and the second connecting groove is arranged transversely perpendicular to the rotating shaft B; At the intersection of the first connecting groove and the second connecting groove, a mounting bracket is connected by a pin shaft, which is arranged in a straight line, The clamp is arranged on the mounting bracket; The outer ends of the first connecting groove and the second connecting groove are respectively provided with positioning holes, The positioning holes are linearly distributed with the two intersection points, The mounting bracket is provided with a fixing hole, and when the mounting bracket rotates, the fixing hole has a position coinciding with the positioning hole, and in the coinciding position, the positioning hole penetrates the positioning pin of the fixing plate to lock the rotation of the mounting bracket.

[0010] As an improvement of the present application, a vertical plate is arranged on the first rotating seat, and a steering engine is arranged on the vertical plate, and the output end of the steering engine is drivingly connected with the second rotating seat for driving the second rotating seat to rotate.

[0011] As an improvement of the present application, the angle indicating mechanism includes a plate body arranged on the vertical plate, The plate body is provided with a vertical plate face, The rotating shaft B is arranged perpendicular to the plate face, and the plate face is provided with an angle scale around the rotating shaft B, The second rotating seat is provided with a pointer arranged in line with the second connecting groove, When the second rotating seat rotates, the angle scale indicated by the pointer is observed to determine the rotation angle.

[0012] As an improvement of the present application, the clamp includes an upper clamp plate and a lower clamp plate arranged oppositely, wherein the upper clamp plate is connected with the mounting bracket, one end of the lower clamp plate is hinged with the upper clamp plate, and the other end forms a clamping space with the upper clamp plate, A fastening device is further arranged between the upper clamp plate and the lower clamp plate, and the lower clamp plate is movable relative to the upper clamp plate by releasing the fastening device to increase the clamping space, or the lower clamp plate is fixed relative to the upper clamp plate to maintain the clamping space.

[0013] As an improvement of the present application, the number of clamps on each mounting bracket is at least two, The two clamps are symmetrically arranged on both sides of the mounting bracket along the center line C, and an adjusting mechanism is arranged between the upper clamp plates of the two clamps and the mounting bracket for adjusting the distance between the two clamps and the mounting bracket, thereby adjusting the clamping width of the clamping space.

[0014] As an improvement of the present application, the adjusting mechanism comprises two movable rods arranged in cross, the middle part of the two movable rods is provided with a same shaft body, and the shaft body is connected to the mounting frame, the front end of the two movable rods is respectively hinged to an upper clamping plate, and the tail end of the two movable rods is respectively slidingly connected to an upper clamping plate, a stabilizing mechanism is further arranged between the upper clamping plate and the mounting frame.

[0015] As an improvement of the present application, the stabilizing mechanism comprises a first rod and a second rod, the tail end of the first rod and the second rod is provided with a same shaft pin, and the shaft pin is slidingly connected to the mounting frame, the front end of the first rod and the second rod is respectively hinged to an upper clamping plate.

[0016] As an improvement of the present application, the first rotating seat is rotatably connected to the moving seat through a shaft, a locking device is further arranged on the first rotating seat, for locking the rotation of the first rotating seat after the first rotating seat is rotated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the present application during the tensile detection and the bending detection.

[0018] Figure 2 is a structural schematic view of the present application during the tensile detection and the bending detection. Figure 1 is an enlarged structural schematic view of the structure at D in the above figure.

[0019] Figure 3 is a front structural schematic view of the present application during the tensile detection and the bending detection.

[0020] Figure 4 is a structural schematic view of the present application during the torsion detection.

[0021] As shown in the figure: 1, tool frame; 1.1, track; 1.2, rack; 2, moving seat; 2.1, sliding block; 2.2, motor; 2.21, gear; 3, first rotating seat; 3.1, vertical plate; 4, second rotating seat; 4.1, rudder; 4.2, pointer; 5, clamp; 5.1, upper clamping plate; 5.2, lower clamping plate; 6, plate body; 6.1, plate surface; 7, support; 7.1, first connecting groove; 7.2, second connecting groove; 7.3, positioning hole; 8, mounting frame; 8.1, fixing hole; 9, fastening device; 10, movable rod; 11, first rod; 12, second rod; 13, bolt. DETAILED DESCRIPTION

[0022] The present application will be further described below in combination with the drawings and specific embodiments.

[0023] Please refer to Figures 1-4 the figure, A flexible battery testing device, comprising: A tool frame 1, two moving seats 2 are arranged on the tool frame 1; A first rotating seat 3 is arranged on the moving seat 2 and can rotate along the rotation axis A; A second rotating seat 4 is arranged on the first rotating seat 3 and can rotate along the rotation axis B; The second rotating seat 4 is provided with a clamp 5, The clamp 5 can be rotated to an angle in which the center line C is perpendicular to the rotation axis B, or parallel to the rotation axis B, Stretching detection: By rotating the first rotating seat 3, the rotation axes B of the two second rotating seats 4 are in a front and back extending and mutually parallel state, The clamp 5 is rotated to the center line C perpendicular to the rotation axis B, The two clamps 5 clamp the flexible battery, and through the forward and backward movement of the moving seat 2, the flexible battery is stretched; Bending detection: Through the rotation of the second rotating seat 4, and cooperating with the forward and backward movement of the moving seat 2, the flexible battery is bent, Torsion detection: By rotating the first rotating seat 3, the rotation axes B of the two second rotating seats 4 are in a left and right extending and mutually parallel state, The clamp 5 is rotated to the center line C parallel to the rotation axis B, Through the rotation of the second rotating seat 4, the battery between the two clamps 5 is forced to twist; It also includes a demonstration module for identifying the rotation amplitude of the clamp 5 rotation axis.

[0024] The detection method of the flexible battery in this application: 1. Performance test under static non-deformation condition First, rotate the first rotating seat 3, so that the rotation axes B of the two second rotating seats 4 are in a front and back extending and mutually parallel state, The clamp 5 is rotated to the center line C perpendicular to the rotation axis B, Further, the two ends of the flexible metal air battery with a "sandwich" thin sheet structure with a length of L are clamped with two clamps 5, the horizontal distance between the two moving seats 2 is adjusted and recorded (±L1), and the flexible metal air battery is in a horizontal state.

[0025] The positive and negative electrode leads of the flexible metal air battery are connected to the input terminals of the battery testing instrument, and the I-V discharge curve and the charging curve of the battery are tested.

[0026] 1.1, performance test under stretching deformation On the basis of static test, increase the horizontal distance between the two moving seats 2, so that the flexible metal air battery produces a certain tensile deformation in the horizontal direction, record the horizontal distance between the two moving seats 2 again and record (±L2), The tensile deformation is ΔL=L2-L1, and the tensile deformation rate is R=(ΔL / L) 100%, connect the positive and negative leads of the flexible metal air battery to the battery tester, and test the I-V discharge performance and charging performance of the battery under different tensile deformation rates.

[0027] 2. Performance test under bending deformation Through the rotation of the second rotating seat 4 and the forward and backward movement of the moving seat 2, the flexible battery is bent to form a certain angle a with the horizontal direction, The angle can be obtained from the rotation amplitude of the rotating shaft of the clamp 5 identified by the schematic module; At the same time, adjust the horizontal distance between the two moving seats 2, so that the clamp 5 and the flexible battery clamped by it are on a straight line, that is, the rotating center of the two clamps 5, the highest (or lowest) bending point of the flexible metal air battery forms an isosceles triangle. Then the bending angle formed by the two sides of the flexible metal air battery can be represented as ∠A=180°-2a.

[0028] Connect the positive and negative leads of the flexible metal air battery to the battery tester, and test the I-V discharge performance and charging performance of the battery under different bending angles.

[0029] 2.1 Performance attenuation test under repeated bending deformation The two moving seats 2 move towards each other or move away at a certain speed. In the process of moving towards each other, the second rotating seat 4 drives the two clamps 5 to rotate around the fixed center at a certain angular velocity, and the rotating directions of the two clamps 5 are opposite, the left clamp 5 rotates counterclockwise, and the right clamp 5 rotates clockwise, so that the flexible metal air battery produces upward bending deformation.

[0030] During the bending deformation, the clamp 5 and the flexible metal air battery clamped by it are kept on a straight line.

[0031] When the upward bending deformation reaches the set maximum value, the two moving seats 2 start to move away. In the process of moving away, the left second rotating seat 4 drives the clamp 5 to rotate clockwise, and the right second rotating seat 4 drives the clamp 5 to rotate counterclockwise, so that the flexible metal air battery returns to the initial horizontal state, and then the downward bending deformation is started.

[0032] When the downward bending deformation reaches the maximum, the second rotating seat 4 and the moving seat 2 are moved again in coordination to restore the flexible metal air battery to the horizontal initial state, and thus a complete bending deformation is completed.

[0033] In the repeated deformation process, the positive and negative electrode leads of the flexible metal air battery remain connected to the battery testing instrument, so that the I-V charge and discharge performance of the flexible metal air battery can be tested online, and the attenuation data of the battery under the repeated cyclic bending deformation condition can be obtained.

[0034] 3. Performance attenuation test under torsional deformation First, the first rotating seat 3 is rotated to make the rotating shafts B of the two second rotating seats 4 extend left and right and be parallel to each other, and the clamps 5 are rotated to make the center lines C extend left and right and be parallel to each other, Further, the two clamps 5 clamp the two ends of the battery respectively, the battery is forced to twist through the rotation of the second rotating seat 4, and the twisting angle of the battery is obtained through the demonstration module; In this deformation process, the positive and negative electrode leads of the flexible metal air battery remain connected to the battery testing instrument, so that the I-V charge and discharge performance of the flexible metal air battery can be tested online, When the battery is repeatedly twisted and reset, the attenuation data of the battery under the repeated cyclic torsional deformation condition can be obtained, and when the battery performance attenuates to a certain limit value, the battery is considered to be invalid, and thus the maximum cyclic torsional deformation number of the battery under the condition is obtained.

[0035] The device integrates the control of three conditions of stretching, bending and twisting for the flexible battery, The two ends of the flexible metal air battery are clamped by two clamps respectively, and the positive and negative electrode leads of the battery are connected to the battery testing instrument, so that the I-V charge and discharge performance and long-term stability test of the battery under different conditions and indexes can be realized.

[0036] The device meets the various test requirements of dynamic performance in the research and development of flexible metal air batteries, can obtain reliable online data, and can save the time of researchers.

[0037] In some embodiments, the tool holder 1 is provided with left and right extending rails 1.1, and the moving seat 2 is provided with a sliding block 2.1 which forms a sliding fit with the rails 1.1; The tool holder 1 is provided with left and right extending racks 1.2, The movable seat 2 is provided with a motor 2.2, the motor 2.2 is drivingly connected with a gear 2.21, and the gear 2.21 is in meshing connection with the rack 1.2, wherein a transmission mechanism can be arranged between the output end of the motor 2.2 and the gear 2.21, and the transmission mechanism can adopt the structure of a worm and a turbine, so that when the motor 2.2 stops working, the transmission mechanism can be self-locked, so that the movable seat 2 will not move, and when the detection work is carried out, the movable seat 2 is controlled to move by the motor 2.2, the motor 2.2 can drive the gear 2.21 to move along the rack 1.2 to the target position by a preset number of steps, the displacement error is small, which is much better than the manual adjustment accuracy, and the test parameter consistency of different batches and different samples is ensured.

[0038] Please refer to Figure 2 In some embodiments, the second rotating seat 4 is provided with a support 7, The support 7 has a first connecting groove 7.1 and a second connecting groove 7.2 arranged at an angle of 90 degrees, wherein the first connecting groove 7.1 extends forward and backward in line with the axis B, and the second connecting groove 7.2 is transversely perpendicular to the rotating shaft B; At the intersection position of the first connecting groove 7.1 and the second connecting groove 7.2, a mounting bracket 8 is connected by a pin shaft, the mounting bracket 8 is arranged in a straight extension, The clamp 5 is arranged on the mounting bracket 8; The outer ends of the first connecting groove 7.1 and the second connecting groove 7.2 are respectively provided with positioning holes 7.3, The positioning holes 7.3 are linearly distributed with the two intersection points respectively, The mounting bracket 8 is provided with a fixing hole 8.1, when the mounting bracket 8 rotates, the fixing hole 8.1 has a position coinciding with the positioning hole 7.3, in the coinciding position state, the positioning hole 7.3 is penetrated by a positioning pin of the fixing plate to lock the rotation of the mounting bracket 8; In this embodiment, when the mounting bracket 8 is rotated into the first connecting groove 7.1, the clamp 5 and the rotating shaft B can be kept on the same axis at this time, which meets the structural arrangement of the stretching and bending detection; When the mounting bracket 8 is rotated into the second connecting groove 7.2, the clamp 5 and the rotating shaft B can be arranged at an angle of 90 degrees at this time, which meets the structural arrangement of the torsion detection.

[0039] Please refer to Figure 1 , Figure 2 In some embodiments, a vertical plate 3.1 is arranged on the first rotating seat 3, the vertical plate 3.1 is provided with a rudder 4.1, and the output end of the rudder 4.1 is drivingly connected with the second rotating seat 4 for driving the second rotating seat 4 to rotate.

[0040] After the above improvement, the rudder 4.1 is used to drive the second rotating seat 4 to rotate, which has the characteristics of high adjustment accuracy, and ensures the test parameter consistency of different batches and different samples.

[0041] The angle indication mechanism includes a plate 6 mounted on the vertical plate 3.1. The plate body 6 is provided with a vertical plate surface 6.1. The rotating shaft B is set perpendicular to the plate surface 6.1, and the plate surface 6.1 has angle graduations around the rotating shaft B. A pointer 4.2 is provided on the second rotating seat 4, and the pointer 4.2 and the second connecting groove 7.2 are arranged along the same straight line. When the second rotating seat 4 rotates, the rotation angle is determined by observing the angle scale indicated by the pointer 4.2.

[0042] In the bending and torsion tests of flexible batteries, the deformation angle (such as the included angle α when bending and the rotation angle when torsion) is the core test parameter. In this improved scheme, the pointer 4.2, which rotates synchronously with the second rotating seat 4, and the angle scale that cooperates with the pointer 4.2, achieve real-time synchronous angle feedback, which has the characteristics of simple structure and reliable operation.

[0043] Please see Figure 2 As shown, the clamp 5 includes an upper clamping plate 5.1 and a lower clamping plate 5.2 arranged opposite to each other. The upper clamping plate 5.1 is connected to the mounting bracket 8, and one end of the lower clamping plate 5.2 is hinged to the upper clamping plate 5.1, while the other end forms a clamping space between the lower clamping plate 5.2 and the upper clamping plate 5.1. A fastening device 9 is also provided between the upper clamping plate 5.1 and the lower clamping plate 5.2. The lower clamping plate 5.2 can be released by the fastening device 9 so that it can move relative to the upper clamping plate 5.1 to increase the clamping space, or the lower clamping plate 5.2 can be fixed relative to the upper clamping plate 5.1 to maintain the clamping space.

[0044] After the above improvements, the clamping space can be adjusted to meet the clamping needs of batteries of different thicknesses.

[0045] In some embodiments, each mounting bracket 8 has at least two clamps 5. Two clamps 5 are symmetrically arranged on both sides of the mounting frame 8 along the center line C. An adjustment mechanism is provided between the upper clamping plate 5.1 of the two clamps 5 and the mounting frame 8 to adjust the distance between the two clamps 5 and the mounting frame 8, thereby adjusting the clamping width of the clamping space to meet the battery clamping requirements of different widths.

[0046] Please see Figure 2 As shown, the adjustment mechanism includes two intersecting movable rods 10, with the same shaft passing through the middle of the two movable rods 10, and the shaft is connected to the mounting bracket 8. The front ends of each of the two movable rods 10 are hinged to an upper clamping plate 5.1. When the upper clamping plate 5.1 moves inward or outward relative to the mounting bracket 8, the front ends of the movable rods 10 can rotate relative to the upper clamping plate 5.1. The tail ends of the two movable rods 10 are each slidably connected to an upper clamping plate 5.1. Preferably, the upper clamping plate 5.1 is provided with a first sliding groove extending back and forth, and the tail end of the movable rod 10 is provided with a first connecting shaft. The first connecting shaft is placed in the first sliding groove and is in contact with the two side walls of the first sliding groove. When the upper clamping plate 5.1 moves outward relative to the mounting bracket 8, the first connecting shaft moves backward in the first slide groove; when the upper clamping plate 5.1 moves inward relative to the mounting bracket 8, the first connecting shaft moves forward in the first slide groove. The aforementioned adjustment mechanism features a simple structure, and with any adjustable spacing, the clamping spaces of the two clamps 5 are on the same horizontal line, preventing the battery from bending or deforming due to clamping by the clamps 5, thus making the test results more accurate.

[0047] A stabilizing mechanism is also provided between the upper clamping plate 5.1 and the mounting bracket 8.

[0048] In some embodiments, the stabilizing mechanism includes a first rod 11 and a second rod 12, the tail ends of which are provided with the same pivot pin. The mounting bracket 8 is provided with a second sliding groove extending front to back, the pivot pin is inserted into the second sliding groove, and the pivot pin is in contact with the two side walls of the second sliding groove. The front ends of the first rod 11 and the second rod 12 are each hinged to an upper clamping plate 5.1; When the upper clamping plate 5.1 moves inward or outward relative to the mounting bracket 8, the first rod 11 and the second rod 12 can be folded or unfolded relative to each other; The two pins are located on the same horizontal line, which can prevent the upper clamping plate 5.1 from deflecting relative to the mounting bracket 8, keep the clamping hole diameter in a stable position, and thus improve the accuracy of the test results.

[0049] Please see Figure 1 As shown, the first rotating seat 3 is rotatably connected to the movable seat 2 via a shaft. The first rotating seat 3 is also provided with a locking device, which is used to lock the rotation of the first rotating seat 3 after it rotates.

[0050] In some embodiments, the locking device includes a pin 13 passing through the first rotating seat 3. The movable seat 2 has two positioning holes 7.3 corresponding to the rotation trajectory of the pin 13. One of the positioning holes 7.3 corresponds to the bending detection position. When the first rotating seat 3 rotates until the pin 13 is aligned with the positioning hole 7.3, the pin 13 is inserted into the positioning hole 7.3, which allows the first rotating seat 3 to be held in that position. When a torsion test is required, remove the pin 13 from the positioning hole 7.3 and rotate the first rotating seat 3 to the torsion test position. At this time, the pin 13 is opposite to the other positioning hole 7.3. Inserting the pin 13 into the positioning hole 7.3 can hold the first rotating seat 3 in that position.

[0051] The scope of protection of this invention is not limited to the above embodiments; all technical solutions falling within the scope of this invention's concept are also within its protection. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this invention should also be considered within its protection scope.

Claims

1. A flexible battery testing device, characterized in that, include: Tooling frame (1), on which two movable seats (2) are provided; The first rotating seat (3) is set on the movable seat (2) and can rotate along the rotating shaft A; The second rotating seat (4) is set on the first rotating seat (3) and can rotate along the rotating shaft B; The second rotating seat (4) is equipped with a clamp (5). The fixture (5) can be rotated to a position where its center line C is perpendicular to the axis of rotation B, or parallel to the axis of rotation B. Tensile testing: By rotating the first rotating seat (3), the rotating shafts B of the two second rotating seats (4) are arranged in a state of extending back and forth and being parallel to each other. Rotate the clamp (5) until the center line C is perpendicular to the axis of rotation B. Two clamps (5) hold the flexible battery and stretch it by moving the movable seat (2) back and forth. Bending test: The flexible battery is bent by rotating the second rotating seat (4) and moving the movable seat (2) back and forth. Torsion detection: By rotating the first rotating seat (3), the rotating shafts B of the two second rotating seats (4) are arranged to extend to the left and right and are parallel to each other. Rotate the fixture (5) until the center line C is parallel to the axis of rotation B. The battery between the two clamps (5) is forced to twist by rotating the second rotating seat (4); It also includes a schematic module for identifying the rotation amplitude of the clamp (5) shaft.

2. The flexible battery testing device according to claim 1, characterized in that: The tooling frame (1) is provided with a track (1.1) extending to the left and right, and the movable seat (2) is provided with a slider (2.1) that slides with the track (1.1). The tooling frame (1) is provided with racks (1.2) extending to the left and right. The movable seat (2) is equipped with a motor (2.2), which is connected to a gear (2.21) and the gear (2.21) meshes with a rack (1.2).

3. The flexible battery testing device according to claim 1, characterized in that: The second rotating seat (4) is provided with a bracket (7). The bracket (7) has a first connecting groove (7.1) and a second connecting groove (7.2) arranged at a 90-degree angle, wherein the first connecting groove (7.1) extends forward and backward in line with the axis B, and the second connecting groove (7.2) is arranged laterally perpendicular to the rotating shaft B; At the intersection of the first connecting groove (7.1) and the second connecting groove (7.2), a mounting bracket (8) is connected by a pin. The mounting bracket (8) is arranged to extend straight out. The clamp (5) is mounted on the mounting frame (8); The outer ends of the first connecting groove (7.1) and the second connecting groove (7.2) are respectively provided with positioning holes (7.3). The positioning hole (7.3) and the two intersection points are respectively distributed in a straight line. The mounting bracket (8) is provided with a fixing hole (8.1). When the mounting bracket (8) rotates, the fixing hole (8.1) and the positioning hole (7.3) have a coincident position. In the coincident position, the positioning hole (7.3) and the fixing plate are inserted into the positioning pin to lock the rotation of the mounting bracket (8).

4. The flexible battery testing device according to claim 3, characterized in that: A vertical plate (3.1) is provided on the first rotating seat (3), and a servo motor (4.1) is provided on the vertical plate (3.1). The output end of the servo motor (4.1) is connected to the second rotating seat (4) for driving the second rotating seat (4) to rotate.

5. The flexible battery testing device according to claim 4, characterized in that: The angle indication mechanism includes a plate (6) mounted on a vertical plate (3.1). The plate (6) is provided with a vertical plate surface (6.1). The rotating shaft B is set perpendicular to the plate surface (6.1), and the plate surface (6.1) is provided with angle scales around the rotating shaft B. A pointer (4.2) is provided on the second rotating seat (4), and the pointer (4.2) and the second connecting groove (7.2) are arranged along the same straight line. When the second rotating seat (4) rotates, the rotation angle is determined by observing the angle scale indicated by the pointer (4.2).

6. The flexible battery testing device according to claim 3, characterized in that: The clamp (5) includes an upper clamping plate (5.1) and a lower clamping plate (5.2) arranged opposite to each other. The upper clamping plate (5.1) is connected to the mounting bracket (8), and one end of the lower clamping plate (5.2) is hinged to the upper clamping plate (5.1), while the other end forms a clamping space between the lower clamping plate (5.2) and the upper clamping plate (5.1). A fastening device (9) is also provided between the upper clamping plate (5.1) and the lower clamping plate (5.2). The lower clamping plate (5.2) is released by the fastening device (9) so that it can move relative to the upper clamping plate (5.1) to increase the clamping space, or the lower clamping plate (5.2) is fixed relative to the upper clamping plate (5.1) to maintain the clamping space.

7. A flexible battery testing device according to claim 6, characterized in that: Each mounting bracket (8) has at least two clamps (5). Two clamps (5) are symmetrically arranged on both sides of the mounting frame (8) along the center line C. An adjustment mechanism is provided between the upper clamping plate (5.1) of the two clamps (5) and the mounting frame (8) to adjust the distance between the two clamps (5) and the mounting frame (8), thereby adjusting the clamping width of the clamping space.

8. The flexible battery testing device according to claim 7, characterized in that: The adjustment mechanism includes cross-arranged movable rods (10), with the same shaft passing through the middle of the two movable rods (10), and the shaft is connected to the mounting bracket (8). The front ends of each of the two movable rods (10) are hinged to an upper clamping plate (5.1), and the rear ends of each of the two movable rods (10) are slidably connected to an upper clamping plate (5.1). A stabilizing mechanism is also provided between the upper clamping plate (5.1) and the mounting bracket (8).

9. A flexible battery testing device according to claim 8, characterized in that: The stabilizing mechanism includes a first rod (11) and a second rod (12), the tail ends of which are provided with the same pivot pin, and the pivot pin is slidably connected to the mounting bracket (8). The front ends of the first rod (11) and the second rod (12) are each hinged to an upper clamping plate (5.1).

10. A flexible battery testing device according to claim 1, characterized in that: The first rotating seat (3) is rotatably connected to the movable seat (2) via a shaft. The first rotating seat (3) is also provided with a locking device for locking the rotation of the first rotating seat (3) after the first rotating seat (3) rotates.

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