A lithium battery film tensile testing machine

Abstract

The utility model discloses a lithium battery film tension testing machine, including testing machine base, setting in the testing machine base's lifting frame, install the display panel of testing machine base surface and set up the test slide block of lifting frame, the surface of test slide block and testing machine base surface are installed respectively with dynamic clamping piece and fixed clamping piece, and dynamic clamping piece and fixed clamping piece structure are same, and all include fixed seat, the ear of symmetry installation in fixed seat both sides, the cam body in fixed seat both sides, and one side of ear is equipped with chuck, and the other side is equipped with protruding block, and the surface fixed connection ear lever of cam body, and are through the transverse wear and tear ear of pivot, and the surface of cam body and ear abut and are equipped with inclined convex along. The inside of lifting frame is equipped with lifting drive component, and the bottom of test slide block is equipped with the dynamometer and is connected with display panel electricity. The testing machine can realize lithium battery film test sample's quick clamping and reliable fixation, guarantees the stability of test result.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing machine technology, specifically a lithium battery thin film tensile testing machine. Background Technology

[0002] During the production and R&D of lithium battery films, mechanical property testing is required, among which tensile strength testing is an important indicator for evaluating the reliability and stability of the film. Existing thin film tensile testing machines generally include a testing base, a clamping device, and a force measuring and display mechanism. Their basic principle is to fix the sample by the clamping mechanism and apply tensile force to measure the mechanical property parameters of the film.

[0003] In existing technologies, common clamping mechanisms mostly employ threaded tightening or manual clamping structures. While these clamping methods can secure the sample, they require a considerable amount of time for adjustment during operation, resulting in low clamping efficiency and making them unsuitable for batch testing. Furthermore, due to the relatively simple force-bearing structure of the clamping components, some devices are prone to problems such as unstable clamping, slippage of the clamping heads, or deformation of the clamping ears during high-strength tensile testing or prolonged use. This can lead to the sample loosening under stress, thereby affecting the accuracy and repeatability of the test results.

[0004] Furthermore, some existing testing machine chuck designs lack effective anti-slip measures. When the sample surface is relatively smooth or the force is uneven, it is prone to displacement or slippage, affecting the stability of test data. In terms of structural strength, existing clamping components generally do not have reinforced designs for cam drives, shaft supports, and the overall shape of the clamping ears, resulting in potential durability issues for the clamping components under long-term use.

[0005] In summary, existing lithium battery thin film tensile testing machines have significant shortcomings in terms of rapid clamping and the stability of the clamping structure. There is an urgent need for a new clamping structure that can achieve rapid operation, reliable clamping, and high structural strength in order to improve the efficiency and accuracy of thin film tensile testing. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by this utility model is as follows: a lithium battery thin film tensile testing machine, including a testing machine base, a lifting frame disposed on the testing machine base, a display panel mounted on the surface of the testing machine base, and a test slider disposed on the lifting frame. A movable clamping component and a fixed clamping component are respectively mounted on the surface of the test slider and the surface of the testing machine base. The movable clamping component and the fixed clamping component have the same structure, both including a fixed base, clamping ears symmetrically mounted on both sides of the fixed base, and cam bodies located on both sides of the fixed base. One side of the clamping ear is provided with a clamp head, and the other side is provided with a protrusion. A lug is fixedly connected to the surface of the cam body, and a rotating shaft with a transversely passing through the clamping ear is connected to the surface of the two cam bodies. The surface of the cam body slides against one side of the clamping ear, and the contact surface is provided with a slanted protrusion.

[0008] In a preferred example, the inner side of the lifting frame is provided with a lifting drive assembly for driving the test slider to move up and down. The bottom end of the test slider is provided with a force gauge connected to the surface of the moving clamp. The output end of the force gauge is electrically connected to the end of the display panel to realize real-time acquisition and display of the force on the sample.

[0009] In another preferred example, the clamp is a metal block structure with anti-slip serrations on its surface, thereby effectively improving the clamping stability of the sample.

[0010] In another preferred example, the cam body and the inclined flange are integrally formed, and the rotating shaft surface is provided with a bearing located inside the fixed seat to ensure the stability and accuracy of the cam body during rotation.

[0011] In another preferred example, the convex edge is an inclined surface structure with an inclination angle of 15° to 30°, and the clamping of the ear is stably pressed through a reasonable angle design.

[0012] In another preferred example, the clamping lug has an L-shaped structure, with its vertical end rotatably connected to the surface of the fixed base, and its horizontal end integrally formed with the protrusion and the clamping head to improve the stability and overall strength of the clamping mechanism.

[0013] In another preferred example, the fixed clamp and the movable clamp are arranged opposite each other and the mounting position is adjustable along the axial direction of the test slider to accommodate lithium battery thin film samples of different lengths.

[0014] In another preferred example, the display panel is electrically connected to the lifting frame to collect and display the displacement information of the test slider, thereby enabling full-process monitoring of the tensile process.

[0015] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, both the moving clamp and the fixed clamp adopt a combination structure of fixed seat, clamp ear, cam body and chuck. The protrusion and the inclined protrusion cooperate with each other, which can realize the rapid clamping and reliable fixation of the sample, and significantly improve the operation efficiency.

[0016] 2. In this utility model, the clamping component has high overall structural strength. Combined with the arrangement of the rotating shaft and bearing and the anti-slip toothed design of the clamp, it can maintain stable force during the stretching process, avoid sample slippage or loosening, and thus ensure test accuracy and repeatability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the moving clamping member and the fixed clamping member according to an embodiment of the present invention; Figure 3 This is an exploded view of the moving clamping component according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the clamping ear and cam body structure according to one embodiment of the present invention; Figure 5 This is a schematic diagram of the cam body and clamp surface structure of one embodiment of the present invention.

[0018] Figure label: 100. Test machine base; 110. Lifting frame; 120. Display panel; 130. Test slider; 200. Moving clamping component; 210. Fixed base; 220. Clamping lug; 230. Cam body; 221. Chuck; 222. Protrusion; 231. Ear rod; 232. Rotating shaft; 233. Angled flange; 300. Fixed clamping component. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0020] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0021] The following describes, with reference to the accompanying drawings, some embodiments of a lithium battery thin film tensile testing machine provided by this utility model.

[0022] Combination Figures 1-5As shown, this utility model provides a lithium battery thin film tensile testing machine, including a testing machine base 100, a lifting frame 110 disposed on the testing machine base 100, a display panel 120 mounted on the surface of the testing machine base 100, and a test slider 130 disposed on the lifting frame 110. A movable clamping member 200 and a fixed clamping member 300 are respectively mounted on the surface of the test slider 130 and the surface of the testing machine base 100, and the movable clamping member 200 and the fixed clamping member 300 have the same structure.

[0023] Both the movable clamping member 200 and the fixed clamping member 300 include a fixed base 210, clamping ears 220 symmetrically installed on both sides of the fixed base 210, and cam bodies 230 located on both sides of the fixed base 210. One side of each clamping ear 220 has a chuck 221, and the other side has a protrusion 222. A lug 231 is fixedly connected to the surface of the cam body 230, and rotating shafts 232, which pass transversely through the clamping ears 220, are connected to the surfaces of both sides of the cam body 230. The surface of the cam body 230 slides against one side of the clamping ear 220, and the contact surface has a slanted protrusion 233 to achieve a pressing fit on the clamping ear 220.

[0024] In a preferred embodiment, the inner side of the lifting frame 110 is provided with a lifting drive assembly for driving the test slider 130 to move up and down. The bottom end of the test slider 130 is provided with a force gauge connected to the surface of the movable clamp 200, which can collect the force data of the sample during the tensile process in real time. The output end of the force gauge is electrically connected to the end of the display panel 120, enabling the test data to be displayed in real time.

[0025] In another embodiment, the clamp 221 is a metal block structure with anti-slip serrations on its surface. The anti-slip serrations increase friction when clamping the sample, preventing the lithium battery film sample from slipping or loosening under stress.

[0026] In another embodiment, the cam body 230 is integrally formed with the inclined flange 233, thereby ensuring a stable fit between the cam body 230 and the clamp 220. The surface of the rotating shaft 232 is provided with a bearing located inside the fixed seat 210, which can provide reliable support for the rotating shaft 232 and ensure smoothness and accuracy when the cam body 230 rotates.

[0027] In another embodiment, the inclined convex edge 233 is an inclined surface structure with an inclination angle ranging from 15° to 30°. Through a reasonable inclination angle design, a suitable force direction and force can be provided to the clamping ear 220 when the cam body 230 rotates, thereby achieving stable clamping of the sample.

[0028] In another embodiment, the clamping ear 220 has an L-shaped structure, with its vertical end rotatably connected to the surface of the fixing base 210, and its horizontal end integrally formed with the protrusion 222 and the clamping head 221. This structural design makes the clamping ear 220 more stable under force, increases its overall strength, and effectively improves the reliability of the clamping mechanism.

[0029] In another embodiment, the fixed clamp 300 is arranged opposite to the movable clamp 200, and its installation position is adjustable along the axial direction of the test slider 130. By adjusting the installation position of the fixed clamp 300, lithium battery thin film samples of different lengths and specifications can be accommodated.

[0030] In another embodiment, the display panel 120 is electrically connected to the lifting frame 110, and the display panel 120 is used to collect and display the displacement information of the test slider 130. Through the display panel 120, the operator can monitor the displacement of the sample during the stretching process in real time, thereby achieving accurate analysis of the tensile properties of the film by combining the force measurement data.

[0031] Overall working principle In operation, the lithium battery thin film sample to be tested is fixed on the movable clamp 200 and the fixed clamp 300, respectively. The lug 231 is manually pressed down, causing the cam body 230 to rotate. This rotates the inclined convex edge 233, which engages with the protrusion 222, displacing the clamp ear 220 and thus causing the clamp head 221 to clamp the sample. The test slider 130 moves up and down along the lifting frame 110 under the action of the lifting drive assembly, causing the movable clamp 200 to stretch the sample. The force gauge can collect the force information of the sample and display it synchronously with the displacement information on the display panel 120, achieving comprehensive testing of the sample's tensile properties.

[0032] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lithium battery thin film tensile testing machine, characterized in that, It includes a test base (100), a lifting frame (110) disposed on the test base (100), a display panel (120) mounted on the surface of the test base (100), and a test slider (130) disposed on the lifting frame (110). The test slider (130) and the test base (100) are respectively equipped with a movable clamping member (200) and a fixed clamping member (300). The movable clamping member (200) and the fixed clamping member (300) have the same structure, including a fixed base (210), clamping ears (220) symmetrically installed on both sides of the fixed base (210), and cam bodies (230) located on both sides of the fixed base (210). A clamping head (221) is provided on one side of the clamping ear (220), and a protrusion (222) is provided on the other side of the clamping ear (220). A lug (231) is fixedly connected to the surface of the cam body (230). A rotating shaft (232) that passes through the clamping ear (220) is connected to the surface of the cam body (230) on both sides. The surface of the cam body (230) slides against one side of the clamping ear (220), and the contact surface is provided with a slanted protrusion (233).

2. The lithium battery thin film tensile testing machine according to claim 1, characterized in that, The inner side of the lifting frame (110) is provided with a lifting drive assembly for driving the test slider (130) to move up and down. The bottom end of the test slider (130) is provided with a force gauge connected to the surface of the moving clamp (200). The output end of the force gauge is electrically connected to the end of the display panel (120).

3. The lithium battery thin film tensile testing machine according to claim 1, characterized in that, The chuck (221) is a metal block structure with anti-slip teeth on its surface.

4. The lithium battery thin film tensile testing machine according to claim 1, characterized in that, The cam body (230) and the inclined convex edge (233) are integrally formed, and the surface of the rotating shaft (232) is provided with a bearing located inside the fixed seat (210) to ensure rotational accuracy.

5. The lithium battery thin film tensile testing machine according to claim 1, characterized in that, The oblique convex edge (233) is an inclined surface structure with an inclination angle of 15° to 30°.

6. The lithium battery thin film tensile testing machine according to claim 1, characterized in that, The clamp (220) has an L-shaped structure. Its vertical end is rotatably connected to the surface of the fixed base (210), and its horizontal end is integrally formed with the protrusion (222) and the clamp (221).

7. The lithium battery thin film tensile testing machine according to claim 1, characterized in that, The fixed clamp (300) is arranged opposite to the movable clamp (200) and its installation position is adjustable along the axial direction of the test slider (130).

8. The lithium battery thin film tensile testing machine according to claim 1, characterized in that, The display panel (120) is electrically connected to the lifting frame (110) and is used to collect and display the displacement information of the test slider (130).

Images