Solid state battery test rack and testing apparatus

Abstract

The application provides a solid-state battery test rack and test device, which comprises a connecting rod, an adjusting bolt, a mounting nut, a first plate, a second plate, a third plate and a fourth plate arranged in sequence from bottom to top; the connecting rod is fixedly installed on the first plate; the second plate, the third plate and the fourth plate are movably sleeved on the connecting rod through guide holes; a spring is arranged between the second plate and the third plate and is sleeved on the connecting rod; a threaded hole is arranged in the center of the fourth plate, and the adjusting bolt is installed in the threaded hole of the fourth plate. The spring arranged between the second plate and the third plate ensures that the third plate can apply stable force to the second plate when the third plate is extruded, and the value of the applied force can be obtained by calculating the deformation of the spring, so that accurate detection is facilitated; the fourth plate, the adjusting bolt, the connecting rod and the mounting nut are arranged to realize the uniform downward pressing of the third plate by adjusting the bolt to press the middle part of the third plate, so that the stability of the applied pressure is ensured.

Description

Technical Field

[0001] This application relates to the field of solid-state battery testing technology, and in particular to a solid-state battery test fixture and testing device. Background Technology

[0002] Solid-state batteries are becoming the core direction of next-generation energy storage due to their high energy density and high safety. Stress testing of solid-state batteries is an essential step in their research and development and production. By simulating the structure and working principle of solid-state batteries, the electrochemical performance of solid-state batteries with different electrolyte materials under different initial pressures is tested and studied.

[0003] Traditional testing devices typically clamp the test mold core using a support plate and a pressure plate, and position the test mold core by adjusting the connecting bolts between the support plate and the pressure plate. Inconsistent bolt tightening can lead to variations in the force applied to the test mold core, and a consistently stable force cannot be guaranteed during testing. Summary of the Invention

[0004] The purpose of this application is to provide a solid-state battery test fixture and test device to solve the problems of uneven force and inability to guarantee stable force application during solid-state battery testing in the prior art.

[0005] This application provides a solid-state battery test frame, which includes connecting rods, adjusting bolts, mounting nuts, and a first plate, a second plate, a third plate, and a fourth plate arranged sequentially from bottom to top. The first plate, the second plate, the third plate, and the fourth plate are connected by at least two connecting rods. The first end of the connecting rod is fixedly mounted on the first plate, and the second plate, the third plate, and the fourth plate are all movably fitted onto the connecting rod through guide holes. A test mold core is placed between the first plate and the second plate. A spring is provided between the second plate and the third plate, and the spring is fitted onto the connecting rod, with each spring and connecting rod corresponding to the other. A threaded hole is provided in the center of the fourth plate, and the adjusting bolt is installed in the threaded hole of the fourth plate, with the first end of the adjusting bolt abutting against the upper side of the third plate. The mounting nut is corresponding to each connecting rod, and the mounting nut is installed at the second end of the connecting rod to limit the height of the fourth plate on the connecting rod.

[0006] The first plate provides load-bearing capacity for the test mold core, the second plate applies downward pressure to the top of the test model, and a spring between the second and third plates ensures that the third plate applies a stable force to the second plate when the third plate is compressed. Calculating the spring deformation yields the applied force value for accurate measurement. The fourth plate, adjusting bolts, connecting rods, and mounting nuts allow the adjusting bolts to press the third plate down evenly, ensuring stable pressure application.

[0007] Optionally, the solid-state battery test fixture also includes a thrust ball bearing mounted on the first end of an adjusting bolt, which abuts against the third plate via the thrust ball bearing.

[0008] The downward force transmitted by the adjusting bolt is evenly transferred to the third plate by the thrust ball bearing, which ensures that the adjusting bolt transmits pressure evenly and stably to the third plate and the second plate below, thus avoiding uneven force on the test mold core.

[0009] Optionally, the third plate has a first groove in the middle for accommodating a thrust ball bearing.

[0010] The first groove enables precise positioning of the thrust ball bearing and stable contact with the third plate, thereby improving the force application stability of the solid-state battery test fixture.

[0011] Optionally, three connecting rods are provided, and the three connecting rods are evenly distributed on the inner side of the edge of the first plate.

[0012] The even distribution of connecting rods further ensures uniform force application.

[0013] Optionally, a second groove is provided in the middle of the upper side of the first plate, the second groove being used to accommodate the test mold core.

[0014] The second groove enables accurate positioning of the test mold core, preventing it from falling off during testing.

[0015] Optionally, the connecting rod is provided with symmetrical cut surfaces.

[0016] The cut surface design makes it easier to disassemble and install the connecting rod.

[0017] On the other hand, this application also provides a testing device that uses the above-mentioned solid-state battery test frame. The testing device further includes a test mold core, which includes a first electrode post, a second electrode post, a first insulating cover, a second insulating cover, and a sealing post. The sealing post has a through hole. The first end of the first electrode post is inserted into the sealing post from the lower side, and the second end of the first electrode post is provided with the first insulating cover. The first end of the second electrode post is inserted into the sealing post from the upper side, and the first end of the second electrode post is provided with the second insulating cover.

[0018] The sealing column enables the placement of solid-state battery testing materials. The first and second motor columns enable contact and external electrical connection of the solid-state battery testing materials. The first and second insulating covers ensure the insulation of the test mold core during the testing process, preventing short circuits from affecting the testing. The test frame ensures stable force distribution on the test mold core during the testing process.

[0019] Optionally, the testing device further includes a first sealing cover and a second sealing cover; the first sealing cover has a first hole in the middle for the first end of the first electrode post to pass through, and the first sealing cover is screwed to the lower end of the sealing post; the second sealing cover has a second hole in the middle for the first end of the second electrode post to pass through, and the second sealing cover is screwed to the upper end of the sealing post.

[0020] The use of a first and a second sealing cap further seals the sealing column, effectively preventing leakage of solid-state battery testing materials during testing.

[0021] Optionally, a first sealing ring is provided between the first sealing cover and the sealing post, and a second sealing ring is provided between the second sealing cover and the sealing post.

[0022] The sealing of the sealing column is further achieved by setting the first and second sealing rings.

[0023] Optionally, a ceramic core is provided in the middle of the sealing column, and the first end of the first electrode column and the first end of the second electrode column are both inserted into the ceramic core.

[0024] The use of a ceramic core ensures airtightness while improving the test's temperature and corrosion resistance.

[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A perspective view of the solid-state battery testing apparatus provided in this application; Figure 2 A three-dimensional view of a solid-state battery test mold provided in an embodiment of this application.

[0028] icon: 1. Test frame; 2. Test mold core; 3. First plate; 4. Second plate; 5. Third plate; 6. Fourth plate; 7. Connecting rod; 8. Adjusting bolt; 9. Mounting nut; 10. Spring; 11. Thrust ball bearing; 12. Cut surface; 13. First electrode post; 14. Second electrode post; 15. First insulating cover; 16. Second insulating cover; 17. Sealing post; 18. First sealing cover; 19. Second sealing cover. Detailed Implementation

[0029] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0033] The present application will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0034] The specific structure is as follows: Figure 1 and Figure 2 As shown.

[0035] This embodiment provides a solid-state battery test rack 1 and a test device to solve the problems of uneven force and inability to guarantee stable force application during solid-state battery testing in the prior art.

[0036] This application provides a solid-state battery test frame 1, which includes connecting rods 7, adjusting bolts 8, mounting nuts 9, and a first plate 3, a second plate 4, a third plate 5, and a fourth plate 6 arranged sequentially from bottom to top. The first plate 3, the second plate 4, the third plate 5, and the fourth plate 6 are connected by at least two connecting rods 7. The first end of the connecting rod 7 is fixedly installed on the first plate 3, and the second plate 4, the third plate 5, and the fourth plate 6 are all movably fitted onto the connecting rod 7 through guide holes. A test mold core 2 is placed between the first plate 3 and the second plate 4. A spring 10 is provided between the second plate 4 and the third plate 5, and the spring 10 is fitted onto the connecting rod 7. The spring 10 and the connecting rod 7 are arranged in a one-to-one correspondence. A threaded hole is provided in the center of the fourth plate 6, and the adjusting bolt 8 is installed in the threaded hole of the fourth plate 6. The first end of the adjusting bolt 8 abuts against the upper side of the third plate 5. The mounting nut 9 is arranged in a one-to-one correspondence with the connecting rod 7, and the mounting nut 9 is installed on the second end of the connecting rod 7 to limit the height of the fourth plate 6 on the connecting rod 7.

[0037] In one implementation, the first plate 3, the second plate 4, the third plate 5, and the fourth plate 6 are all made of stainless steel, and the first plate 3, the second plate 4, the third plate 5, and the fourth plate 6 are all disc-shaped structures with equal diameters.

[0038] In one implementation, there may be two, three, four, five, or more connecting rods 7, which are evenly distributed around the circumference of the first plate 3. Furthermore, the straight-line distance between the outer walls of two adjacent connecting rods 7 is greater than the outer diameter of the test mold core 2.

[0039] In one implementation, the connecting rod 7 is also made of stainless steel. The first end of the connecting rod 7 is provided with an external thread, and the first plate 3 is provided with a threaded hole. The connecting rod 7 is installed on the first plate 3 through the threaded hole.

[0040] In one implementation, the second plate 4, the third plate 5, and the fourth plate 6 are all provided with through holes for the connecting rod 7 to pass through. The threaded holes on the first plate 3 are provided in a one-to-one correspondence with the through holes on the second plate 4, the third plate 5, and the fourth plate 6.

[0041] In one implementation, an elastic washer is provided below the mounting nut 9 to ensure the locking effect of the mounting nut 9.

[0042] The first plate 3 provides load-bearing capacity for the test mold core 2, while the second plate 4 applies downward pressure to the top of the test model. A spring 10 between the second plate 4 and the third plate 5 ensures that the third plate 5 applies a stable force to the second plate 4 when the third plate 5 is compressed. The applied force can be obtained by calculating the deformation of the spring 10, facilitating accurate detection. The fourth plate 6, adjusting bolt 8, connecting rod 7, and mounting nut 9 enable the adjusting bolt 8 to press the middle of the third plate 5, thereby driving the third plate 5 to a uniform downward pressure and ensuring the stability of the applied pressure.

[0043] Before testing, the required pressure can be adjusted by detecting the deformation of spring 10. This also solves the problem that traditional testing devices cannot confirm the testing pressure.

[0044] In one implementation, the solid-state battery test fixture 1 also includes a thrust ball bearing 11, which is mounted on the first end of the adjusting bolt 8, and the adjusting bolt 8 abuts against the third plate 5 through the thrust ball bearing 11.

[0045] In one implementation, the inner diameter of the thrust ball bearing 11 is equal to the inner diameter of the first end of the adjusting bolt 8, and the thrust ball bearing 11 is tightly fitted onto the first end of the adjusting bolt 8.

[0046] The downward force transmitted by the adjusting bolt 8 is evenly transmitted to the third plate 5 through the thrust ball bearing 11, ensuring that the adjusting bolt 8 transmits pressure evenly and stably to the third plate 5 and the second plate 4 below, thus avoiding uneven force on the test mold core 2.

[0047] In one implementation, the third plate 5 has a first groove in the middle for accommodating the thrust ball bearing 11.

[0048] In one implementation, the depth of the first groove is less than the width of the thrust ball bearing 11. The diameter of the first groove is greater than or equal to the outer diameter of the thrust ball bearing 11.

[0049] The first groove enables the thrust ball bearing 11 to be positioned precisely and to make stable contact with the third plate 5, thereby improving the force application stability of the solid-state battery test frame 1.

[0050] In one implementation, three connecting rods 7 are provided, and the three connecting rods 7 are evenly distributed on the inner side of the edge of the first plate 3.

[0051] The even distribution of connecting rods 7 further ensures the uniformity of force application.

[0052] In one implementation, a second groove is provided in the middle of the upper side of the first plate 3, and the second groove is used to accommodate the test mold core 2.

[0053] The second groove was designed to ensure accurate positioning of the test mold core 2, preventing it from falling off during testing.

[0054] In one implementation, the connecting rod 7 is symmetrically provided with cut surfaces 12.

[0055] The design of the cut surface 12 makes it easier to disassemble and install the connecting rod 7.

[0056] On the other hand, this application also provides a testing device using the aforementioned solid-state battery test frame 1. The testing device further includes a test mold core 2, which includes a first electrode post 13, a second electrode post 14, a first insulating cover 15, a second insulating cover 16, and a sealing post 17. The sealing post 17 has a through hole. The first end of the first electrode post 13 is inserted into the sealing post 17 from the lower side, and the second end of the first electrode post 13 is provided with the first insulating cover 15. The first end of the second electrode post 14 is inserted into the sealing post 17 from the upper side, and the second end of the second electrode post 14 is provided with the second insulating cover 16.

[0057] In one implementation, the sealing post 17 can be made of ceramic.

[0058] The sealing column 17 enables the holding of solid-state battery test materials. The first motor column and the second motor column enable contact and external electrical connection of the solid-state battery test materials. The first insulating cover 15 and the second insulating cover 16 enable insulation of the test mold core 2 during the test process, preventing electrical leakage from affecting the test. The test frame 1 ensures stable force distribution to the test mold core 2 during the test process.

[0059] In one implementation, the testing device further includes a first sealing cover 18 and a second sealing cover 19; the first sealing cover 18 has a first hole in the middle for the first end of the first electrode post to pass through, and the first sealing cover 18 is screwed to the lower end of the sealing post 17; the second sealing cover 19 has a second hole in the middle for the first end of the second electrode post to pass through, and the second sealing cover 19 is screwed to the upper end of the sealing post 17.

[0060] The first sealing cap 18 and the second sealing cap 19 further seal the sealing column 17, effectively preventing leakage of solid-state battery testing materials during the testing process.

[0061] In one implementation, a first sealing ring is provided between the first sealing cover 18 and the sealing post 17, and a second sealing ring is provided between the second sealing cover 19 and the sealing post 17.

[0062] The sealing of the sealing column 17 is further achieved by setting the first sealing ring and the second sealing ring.

[0063] In one implementation, the sealing post 17 can be made of PEEK (polyetheretherketone), and a ceramic core is disposed in the middle of the sealing post 17. The first end of the first electrode post 13 and the second end of the second electrode post 14 are both inserted into the ceramic core. The ceramic core is tightly installed inside the sealing post 17.

[0064] The top and bottom of the sealing post 17 are provided with threads for installing the first sealing cover 18 and the second sealing cover 19.

[0065] The use of a ceramic core ensures airtightness while improving the test's temperature and corrosion resistance.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A solid-state battery test fixture, characterized in that, The solid-state battery test frame includes a connecting rod, adjusting bolts, mounting nuts, and a first plate, a second plate, a third plate, and a fourth plate arranged sequentially from bottom to top; The first plate, the second plate, the third plate, and the fourth plate are connected by at least two connecting rods; The first end of the connecting rod is fixedly mounted on the first plate, and the second plate, the third plate and the fourth plate are all movably fitted onto the connecting rod through guide holes; The space between the first plate and the second plate is used to place the test mold core; A spring is provided between the second plate and the third plate, and the spring is fitted onto the connecting rod. The spring and the connecting rod are arranged in a one-to-one correspondence. The fourth plate has a threaded hole at its center, and the adjusting bolt is installed in the threaded hole of the fourth plate. The first end of the adjusting bolt abuts against the upper side of the third plate. The mounting nuts and the connecting rods are provided in a one-to-one correspondence. The mounting nuts are installed at the second end of the connecting rods to limit the height of the fourth plate on the connecting rods.

2. The solid-state battery test fixture according to claim 1, characterized in that, The solid-state battery test fixture also includes a thrust ball bearing, which is mounted on the first end of the adjusting bolt, and the adjusting bolt abuts against the third plate via the thrust ball bearing.

3. The solid-state battery test fixture according to claim 2, characterized in that, The third plate has a first groove in the middle for accommodating the thrust ball bearing.

4. The solid-state battery test fixture according to claim 1, characterized in that, There are three connecting rods, which are evenly distributed on the inner side of the edge of the first plate.

5. The solid-state battery test fixture according to claim 1, characterized in that, A second groove is provided in the middle of the upper side of the first plate, and the second groove is used to accommodate the test mold core.

6. The solid-state battery test fixture according to claim 1, characterized in that, The connecting rod has symmetrical cut surfaces.

7. A testing apparatus, employing a solid-state battery testing fixture as described in any one of claims 1-6, characterized in that, The testing device also includes a test mold core. The test mold core includes a first electrode post, a second electrode post, a first insulating cover, a second insulating cover, and a sealing post; The sealing column is provided with a through hole; The first end of the first electrode post is inserted into the sealing post from the lower side, and the second end of the first electrode post is provided with a first insulating cap; The first end of the second electrode post is inserted into the sealing post from the upper side, and the first end of the second electrode post is provided with a second insulating cap.

8. The testing apparatus according to claim 7, characterized in that, The testing device also includes a first sealing cover and a second sealing cover; The first sealing cap has a first hole in the middle for the first end of the first electrode post to pass through, and the first sealing cap is screwed to the lower end of the sealing post; The second sealing cap has a second hole in the middle for the first end of the second electrode post to pass through, and the second sealing cap is screwed to the upper end of the sealing post.

9. The testing apparatus according to claim 8, characterized in that, A first sealing ring is provided between the first sealing cap and the sealing post, and a second sealing ring is provided between the second sealing cap and the sealing post.

10. The testing apparatus according to claim 7, characterized in that, A ceramic core is provided in the middle of the sealing column, and the first end of the first electrode column and the first end of the second electrode column are both inserted into the ceramic core.

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