Solid electrolyte thickness non-pressure contact type testing device and testing method

Abstract

The invention discloses a solid electrolyte thickness non-pressure contact type testing device and method, and the device comprises a mold battery frame, a lower terminal post, a sleeve, an upper terminal post, a height gauge, and a buzzer. The mold battery frame comprises a base; the lower pole is arranged above the base; the lower pole is arranged corresponding to the sleeve, penetrates through the sleeve from the lower part of the sleeve and is in sliding connection with the sleeve; the upper pole comprises a height calibration rod and an upper lead, the height calibration rod is connected with the upper lead, the upper pole and the sleeve are correspondingly arranged, and the upper pole penetrates through the sleeve from the upper part of the sleeve and is in sliding connection with the sleeve; the height gauge comprises a height pointer and a height gauge lead; the upper lead and the height gauge lead are respectively connected with the buzzer; the real thickness in a pressure state can be effectively measured, the problem that a measured value is increased due to thickness rebound after pressure relief of a membrane material is avoided, meanwhile, the measurement state is well unified through the short-circuit buzzing function, the accuracy and consistency of solid electrolyte testing are effectively improved, the thickness of the solid electrolyte can be more accurately evaluated, and the application prospect is wide. And measurement errors are reduced.

Description

Technical Field

[0001] This invention relates to the field of solid-state battery testing technology, and in particular to a pressureless contact testing device and method for testing the thickness of solid electrolytes. Background Technology

[0002] Lithium-ion batteries have become the mainstream power source for portable devices, widely used in laptops, mobile phones, and other portable electronic devices. With the rise of electric vehicles, there are higher requirements for battery energy density and safety. Traditional lithium-ion batteries contain electrolytes with low boiling points, low flash points, and are flammable and volatile, posing potential safety risks. All-solid-state lithium batteries replace the liquid electrolyte with solid electrolyte powder, giving them advantages in high energy density and high safety performance, thus becoming an important development direction for lithium batteries.

[0003] The ionic conductivity, electronic conductivity, and electrochemical stability window of solid electrolyte powders and membrane materials all constrain the development of all-solid-state batteries. After testing the ionic and electronic conductivity of solid electrolyte powders and membrane materials, it is necessary to effectively and accurately measure the thickness of the laminated membrane, which is an important condition for data normalization. This relates to the formula for calculating ionic conductivity... The thickness needs to be measured. One method is to release the pressure after the solid electrolyte powder is molded and remove the mold, and then use a micrometer to measure its thickness. Another method is to measure the thickness of the ultra-thin solid electrolyte membrane material by measuring the height difference before and after the mold is filled with the membrane material after the pressure mold is released. However, both methods will result in the measured thickness being too large. This is because once the external force is removed, the thickness will rebound, which will lead to an inaccurate characterization of the solid electrolyte performance. This is especially true when the membrane material itself is thin, where small differences can cause huge measurement errors.

[0004] With the further development of battery technology, it has been found that the accuracy of the performance of solid electrolyte powder and membrane materials is one of the important factors affecting the design and performance of solid-state batteries. How to quickly and accurately evaluate the basic characteristics of solid electrolyte membranes is closely related to the rationality of the testing device design and the methodology; these issues urgently need to be addressed. Summary of the Invention

[0005] The purpose of this invention is to provide a pressureless contact testing device and method for solid electrolyte thickness, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressureless contact testing device for solid electrolyte thickness, comprising: Mold battery frame, the mold battery frame includes a base; The lower electrode post is located above the base; The sleeve and the lower electrode post are respectively set with the sleeve. The lower electrode post passes through the sleeve from below and is slidably connected with the sleeve. The upper electrode post includes a height calibration rod and an upper lead wire. The height calibration rod and the upper lead wire are connected. The upper electrode post is correspondingly set with the sleeve. The upper electrode post passes through the sleeve from above and is slidably connected with the sleeve. A height gauge, which includes a height pointer and height gauge leads; The buzzer, the upper lead wire, and the height gauge lead wire are connected to the buzzer respectively.

[0007] Furthermore, the lower pole post includes a lower column body and a lower support portion. The lower support portion includes a support outer edge. The lower column body is connected to the lower support portion. The lower column body is disposed inside the sleeve. The lower end of the sleeve is connected to the support outer edge.

[0008] Furthermore, it also includes a force-applying screw. The mold battery frame includes a frame upper plate and a frame support column. The frame upper plate is connected to the frame support column. The frame upper plate is provided with a threaded hole. The threaded hole of the upper plate is correspondingly provided with the force-applying screw. The threaded hole of the upper plate is screwed to the force-applying screw.

[0009] Furthermore, it also includes a pressure rod, the upper pole column includes an upper column body and an upper support part, the upper column body is connected to the upper support part, the upper support part is connected to the upper lead wire, the pressure rod is connected to the upper support part, one end of the force-applying screw is connected to the pressure rod, and the upper column body is disposed inside the sleeve and slidably connected to the sleeve.

[0010] Furthermore, the force-applying screw includes a torque wrench, which is located at the end of the force-applying screw away from the upper pole.

[0011] Furthermore, it also includes an upper sealing ring and a lower sealing ring. The upper electrode is sealed to the sleeve through the upper sealing ring, and the lower electrode is sealed to the sleeve through the lower sealing ring.

[0012] Furthermore, the sleeve is provided with a head groove, and the upper sealing ring is located at the bottom of the head groove.

[0013] Furthermore, it includes a sleeve end cap, which has an end cap hole, and the sleeve end cap and end cap groove are correspondingly arranged. The upper pole post is correspondingly arranged with the end cap hole, and the upper pole post passes through the end cap hole and the upper sealing ring and is slidably connected to the sleeve.

[0014] Furthermore, it also includes a horizontal test platform, a mold battery frame, and a height gauge set on the horizontal test platform.

[0015] On the other hand, a pressureless contact testing method for solid electrolyte thickness is provided, employing the pressureless contact testing device for solid electrolyte thickness described in any of the above claims, comprising: Assemble the upper electrode, sleeve, and lower electrode, so that the upper and lower electrodes abut against each other inside the sleeve, and apply a test pressure of a preset pressure value to the upper electrode. Move the height pointer toward the height calibration lever. When the buzzer triggers the short-circuit buzzer function, record the initial height measured by the height gauge. Solid electrolyte powder or membrane material is placed between the upper and lower electrodes inside the sleeve, and test pressure is applied to the upper electrode. Move the height pointer toward the height calibration lever. When the buzzer triggers the short-circuit buzzer function, record the test height measured by the height gauge. The thickness of the solid electrolyte powder or membrane under the test pressure is determined based on the test height and initial height.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention can effectively measure the true thickness under pressure, avoiding the problem of the thickness rebound after the membrane material is released, which causes the measured value to become larger. At the same time, the short-circuit buzzer function makes the measurement state well unified, effectively improving the accuracy and consistency of solid electrolyte testing, enabling more accurate evaluation of solid electrolyte thickness and reducing measurement error. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the solid electrolyte thickness pressureless contact testing device in an embodiment of the present invention; Figure 2 This is another structural schematic diagram of the pressureless contact testing device for solid electrolyte thickness in an embodiment of the present invention; Figure 3 This is a flowchart of the pressureless contact test method for solid electrolyte thickness in an embodiment of the present invention; In the diagram: 100, mold battery frame; 200, lower terminal post; 300, sleeve; 400, upper terminal post; 500, height gauge; 600, buzzer; 700, lead screw; 800, horizontal test platform; 900, solid electrolyte powder or membrane material; 110, base; 120, frame upper plate; 130, frame support; 210, lower column; 220, lower support; 230, lower sealing ring; 310, end cap groove; 410, height calibration rod; 420, upper lead wire; 430, upper column; 440, upper support; 450, upper sealing ring; 460, sleeve end cap; 510, height pointer; 520, height gauge lead wire; 710, pressure rod; 720, torque wrench; 730, gasket; 121, threaded hole on upper plate; 221, outer edge of support. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Please refer to the accompanying drawings in the specification. This invention provides a technical solution: A pressureless contact testing device for solid electrolyte thickness, comprising: Mold battery frame 100, mold battery frame 100 includes base 110; The lower pole post 200 is located above the base 110; Sleeve 300, lower pole post 200 is correspondingly provided with sleeve 300, lower pole post 200 passes through the sleeve 300 from below and is slidably connected with sleeve 300; The upper electrode post 400 includes a height calibration rod 410 and an upper lead wire 420. The height calibration rod 410 and the upper lead wire 420 are connected. The upper electrode post 400 is correspondingly set with the sleeve 300. The upper electrode post 400 passes through the sleeve 300 from above and is slidably connected with the sleeve 300. Height gauge 500, which includes height pointer 510 and height gauge lead wire 520; The buzzer 600, the upper lead wire 420 and the height gauge lead wire 520 are respectively connected to the buzzer 600.

[0022] In the above embodiments, the present invention provides an online contact thickness measurement device for solid electrolyte powder and film material under pressure in a mold battery, which uses a buzzer 600 to test current conduction. First, the upper electrode 400 and lower electrode 200 are placed in the sleeve 300. The upper electrode 400 is equipped with a height calibration rod 410 with a metal lead. The mold is placed on a horizontal test platform 800 for online height detection. Then, the height of the height pointer 510 on the height ruler 500 is rotated and lowered until it contacts the height calibration rod 410. The thickness is then measured by the height calibration rod 410 and the upper lead 420. The height calibration rod 410, the upper lead wire 420, and the buzzer 600 form an electrical circuit to trigger the short-circuit buzzer function of the buzzer 600. By recording the initial height when the solid electrolyte powder or membrane 900 is not placed inside the sleeve 300, and the test height when the solid electrolyte powder or membrane 900 is placed inside the sleeve 300, the thickness of the solid electrolyte powder or membrane 900 under pressure is detected. Compared with traditional testing equipment, it has the advantage of online and accurate detection of the thickness value in real time. This change in testing structure can effectively improve the accuracy of the test.

[0023] Optionally, the lower pole post 200 includes a lower pole body 210 and a lower support portion 220. The lower support portion 220 includes a support outer edge 221. The lower pole body 210 is connected to the lower support portion 220. The lower pole body 210 is disposed inside the sleeve 300. The lower end of the sleeve 300 is connected to the support outer edge 221.

[0024] In the above embodiments, the lower column 210 is disposed inside the sleeve 300 to bear or press the solid electrolyte powder or membrane material 900 inside the sleeve, and the outer support edge 221 is used to support the sleeve 300.

[0025] Optionally, it also includes a force-applying screw 700. The mold battery frame 100 includes a frame upper plate 120 and a frame support 130. The frame upper plate 120 is connected to the frame support 130. The frame upper plate 120 is provided with an upper plate threaded hole 121. The upper plate threaded hole 121 is correspondingly provided with the force-applying screw 700. The upper plate threaded hole 121 is screwed to the force-applying screw 700.

[0026] In the above embodiments, the present invention preferably uses a force-applying screw 700 and a frame upper plate 120 connected by screws as the structure for applying test pressure, which is characterized by its simple structure and easy arrangement.

[0027] Optionally, it also includes a pressure rod 710. The upper pole post 400 includes an upper column 430 and an upper support part 440. The upper column 430 is connected to the upper support part 440, the upper support part 440 is connected to the upper lead wire 420, the pressure rod 710 is connected to the upper support part 440, one end of the force-applying screw 700 is connected to the pressure rod 710, and the upper column 430 is disposed inside the sleeve 300 and slidably connected to the sleeve 300.

[0028] In the above embodiment, the force-applying screw 700 applies test pressure to the upper support portion 440 through the pressure rod 710, and the pressure rod 710 makes the test pressure transmitted by the force-applying screw 700 evenly distributed on the upper surface of the upper support portion 440.

[0029] Optionally, the force-applying screw 700 includes a torque wrench 720, which is located at the end of the force-applying screw 700 away from the upper pole post 400.

[0030] In the above embodiments, the present invention preferably applies test pressure using a torque wrench 720.

[0031] Optionally, it also includes an upper sealing ring 450 and a lower sealing ring 230, wherein the upper electrode post 400 is sealed to the sleeve 300 through the upper sealing ring 450, and the lower electrode post 200 is sealed to the sleeve 300 through the lower sealing ring 230.

[0032] In the above embodiments, the upper sealing ring 450 and the lower sealing ring 230 respectively ensure the airtightness between the upper electrode post 400 and the lower electrode post 200 and the sleeve 300, thereby reducing test errors.

[0033] Optionally, the sleeve 300 is provided with a head groove 310, and the upper sealing ring 450 is disposed at the bottom of the head groove 310.

[0034] In the above embodiment, the upper sealing ring 450 can be easily arranged or removed through the end cap groove 310.

[0035] Optionally, it includes a sleeve end cap 460, which has an end cap hole. The sleeve end cap 460 is correspondingly provided with the end cap groove 310, and the upper pole post 400 is correspondingly provided with the end cap hole. The upper pole post 400 passes through the end cap hole and the upper sealing ring 450 and is slidably connected with the sleeve 300.

[0036] In the above embodiment, the solid electrolyte powder or membrane material 900 is conveniently arranged between the upper electrode post 400 and the lower electrode post 200 through the end cap groove 310. After the arrangement is completed, the sleeve end cap 460 and the upper sealing ring 450 are inserted into the end cap groove 310 to complete the seal between the upper electrode post 400 and the sleeve 300.

[0037] Optionally, it also includes a horizontal test platform 800, a mold battery frame 100 and a height gauge 500 disposed on the horizontal test platform 800.

[0038] In the above embodiments, the mold battery frame 100 and the height gauge 500 are both set on the horizontal test platform 800 to ensure that the test pressure acts vertically on the upper electrode 400 and to ensure that the height calibration rod 410 and the height pointer 510 are arranged horizontally.

[0039] On the other hand, a pressureless contact testing method for solid electrolyte thickness is provided, which utilizes the pressureless contact testing device for solid electrolyte thickness described in any of the above claims, and includes the following steps: S102. Assemble the upper electrode, sleeve and lower electrode, so that the upper electrode and lower electrode abut against each other in the sleeve, and apply a test pressure of a preset pressure value to the upper electrode. Specifically, when no solid electrolyte powder or membrane material is placed inside the sleeve, a test pressure is applied to obtain the deformation error of the solid electrolyte thickness non-pressure contact device under the test pressure. S104. Move the height pointer to the height calibration rod. When the buzzer triggers the short-circuit buzzer function, record the initial height measured by the height gauge. Specifically, the buzzer trigger short-circuit buzzer function allows the height pointer to emit a buzzing sound upon contact without applying any external force to the height calibration rod of the test object. This avoids the height error caused by pressing the height calibration rod when the height pointer measures the height calibration rod, thus forming an initial height and making the recorded height measurement value more accurate. S106. Place the solid electrolyte powder or membrane material between the upper and lower electrodes inside the sleeve, and apply test pressure to the upper electrode. Specifically, after placing solid electrolyte powder or membrane material into the sleeve, a test pressure is applied to obtain the deformation error of the solid electrolyte thickness non-pressure contact device under the test pressure and the deformation amount of the solid electrolyte powder or membrane material under the test pressure. S108. Move the height pointer to the height calibration rod. When the buzzer triggers the short-circuit buzzer function, record the test height measured by the height gauge. Specifically, the test height at this time includes the initial height and the amount of deformation; S110. Determine the thickness of the solid electrolyte powder or membrane under the test pressure based on the test height and initial height.

[0040] Specifically, the deformation of the solid electrolyte powder or membrane material under test pressure is obtained by subtracting the initial height from the test height.

[0041] In the above embodiments, since the deformation of the solid electrolyte powder or membrane under the test pressure is measured without releasing the test pressure, the error caused by releasing the pressure and taking out the mold after the solid electrolyte powder is molded and then measuring its thickness with a micrometer is eliminated, or the error caused by measuring the height difference before and after filling the mold with the membrane to obtain the thickness of the ultrathin solid electrolyte membrane after the pressure mold is released is eliminated.

[0042] The following specific examples further illustrate this point: Example 1 Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and a sleeve 300 with an inner diameter of 11 mm on each side. Insert the lower column 210 and upper column 430 into the sleeve 300. Apply 400 MPa pressure to the assembled assembly using a press, align the height calibration rod 410 and height pointer 510 horizontally, and then place them on a horizontal test bench 800. Attach an upper lead 420 of a metal wire to the height calibration rod 410. Connect the height gauge lead 520 of the height calibration rod 410 and the height pointer 510 to a buzzer 600. When the height calibration rod 410 and the height pointer 510 come into contact, the buzzer 600 will sound. Record the thickness value T0 at this point.

[0043] Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and an inner diameter of 11 mm on each side of the sleeve 300. Place a 30 μm thick electrolyte membrane material 900 into the sleeve 300, and then insert the lower column 210 and upper column 430 into the sleeve 300. Apply 400 MPa pressure to the assembled assembly using a press, align the height calibration rod 410 and height pointer 510 horizontally, and then place it on a horizontal test platform 800. Attach an upper lead 420 of a metal wire to the height calibration rod 410. Connect the height gauge lead 520 of the height calibration rod 410 and the height pointer 510 to a buzzer 600. When the height calibration rod 410 and the height pointer 510 come into contact, the buzzer 600 will sound; record the thickness value T1 at this point. Measure the thickness of the membrane material 900 after applying pressure, from T0 to T1, and record the results in Table 1.

[0044] Example 2 Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and an inner diameter of 11 mm on each side of the sleeve 300. Insert the lower column 210 and upper column 430 into the sleeve 300. Apply 400 MPa pressure to the assembled assembly using a press, align the height calibration rod 410 and height pointer 510 horizontally, and then place them on the horizontal test bench 800. Attach a metal wire to the upper push rod of the sleeve, and attach an upper lead wire 420 to the height calibration rod 410. Connect the height gauge lead wire 520 of the height calibration rod 410 and the height pointer 510 to a buzzer 600. When the height calibration rod 410 and the height pointer 510 come into contact, the buzzer 600 will sound. Record the thickness value T0 at this point.

[0045] Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and an inner diameter of 11 mm on each side of the sleeve 300. Place 150 mg of electrolyte powder into the sleeve 300, and then insert the lower column 210 and upper column 430 into the sleeve 300. Apply 400 MPa pressure to the assembled assembly using a press, aligning the height calibration rod 410 and height pointer 510 horizontally, and then place it on a horizontal test bench 800. Attach an upper lead 420 of a metal wire to the height calibration rod 410. Connect the height gauge lead 520 of the height calibration rod 410 and the height pointer 510 to a buzzer 600. When the height calibration rod 410 and the height pointer 510 come into contact, the buzzer 600 will sound. Record the thickness value T1 at this point. The thickness is T0-T1, and the recorded results are shown in Table 1.

[0046] Example 3 Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and an inner diameter of 11 mm on each side of the sleeve 300. Insert the lower column 210 and upper column 430 into the sleeve 300. Apply 400 MPa pressure to the assembled assembly using a press, align the height calibration rod 410 and height pointer 510 horizontally, and then place them on the horizontal test bench 800. Attach a metal wire to the upper push rod of the sleeve, and attach an upper lead wire 420 to the height calibration rod 410. Connect the height gauge lead wire 520 of the height calibration rod 410 and the height pointer 510 to a buzzer 600. When the height calibration rod 410 and the height pointer 510 come into contact, the buzzer 600 will sound. Record the thickness value T0 at this point.

[0047] Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and an inner diameter of 11 mm on each side of the sleeve 300. Place a 50 μm thick electrolyte membrane material 900 into the sleeve 300, and then insert the lower column 210 and upper column 430 into the sleeve 300. Apply 400 MPa pressure to the assembled assembly using a press, align the height calibration rod 410 and height pointer 510 horizontally, and then place it on a horizontal test bench 800. Attach an upper lead 420 of a metal wire to the height calibration rod 410. Connect the height gauge lead 520 of the height calibration rod 410 and the height pointer 510 to a buzzer 600. When the height calibration rod 410 and the height pointer 510 come into contact, the buzzer 600 will sound; record the thickness value T1 at this point. Measure the thickness of the membrane material 900 after applying pressure, from T0 to T1, and record the results in Table 1.

[0048] Comparative Example 1 Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and a sleeve 300 with an inner diameter of 11 mm on each side. Place a 30 μm thick electrolyte membrane into the sleeve 300, and then insert the lower column 210 and upper column 430 into the sleeve 300. Press the assembled assembly to 400 MPa using a press, then release the pressure and place the lower column 210, upper column 430, and sleeve 300 onto a height gauge measuring table to measure the thickness of both sides of the lower column 210 and upper column 430. The thickness is T1, and the results are recorded in Table 1.

[0049] Comparative Example 2 Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and a sleeve 300 with an inner diameter of 11 mm on each side. Place 150 mg of electrolyte powder into the sleeve 300, and then insert the lower column 210 and upper column 430 into the sleeve 300. Press the assembled assembly to 400 MPa using a press, and then release the pressure. Place the lower column 210, upper column 430, and sleeve 300 onto a height gauge measuring table to measure the thickness of both sides of the lower column 210 and upper column 430. The thickness is T1, and the results are recorded in Table 1.

[0050] Comparative Example 3 Select a lower column 210 and an upper column 430 with a diameter of 10 mm, and a sleeve 300 with an inner diameter of 11 mm on each side. Place a 50 μm thick electrolyte membrane into the sleeve 300, and then insert the lower column 210 and upper column 430 into the sleeve 300. Press the assembled assembly to 400 MPa using a press, then release the pressure and place the lower column 210, upper column 430, and sleeve 300 onto a height gauge measuring table to measure the thickness of both sides of the lower column 210 and upper column 430. The thickness is T1, and the results are recorded in Table 1.

[0051]

[0052] The above comparative examples demonstrate that the present invention can effectively measure the true thickness under pressure, avoiding the problem of increased measurement values ​​caused by thickness rebound after pressure release. At the same time, the short-circuit buzzer function ensures good consistency in measurement conditions, effectively improving the accuracy and consistency of solid electrolyte testing, making the evaluation of solid electrolyte thickness more precise, and reducing measurement errors.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid electrolyte thickness non-contact testing device, characterized by, include: Mold battery frame (100), mold battery frame (100) includes base (110); The lower pole post (200) is located above the base (110); A sleeve (300) and a lower pole post (200) are respectively provided with the sleeve (300). The lower pole post (200) passes through the sleeve (300) from below and is slidably connected with the sleeve (300). The upper pole post (400) includes a height calibration rod (410) and an upper lead wire (420). The height calibration rod (410) and the upper lead wire (420) are connected. The upper pole post (400) is correspondingly set with the sleeve (300). The upper pole post (400) passes through the sleeve (300) from above and is slidably connected with the sleeve (300). The height gauge (500) includes a height pointer (510) and a height gauge leader (520). The buzzer (600), the upper lead wire (420) and the height gauge lead wire (520) are respectively connected to the buzzer (600).

2. A solid electrolyte thickness non-contact testing device according to claim 1, characterized by, The lower pole post (200) includes a lower post body (210) and a lower support part (220). The lower support part (220) includes a support outer edge (221). The lower post body (210) is connected to the lower support part (220). The lower post body (210) is disposed inside the sleeve (300). The lower end of the sleeve (300) is connected to the support outer edge (221).

3. A solid electrolyte thickness non-contact testing device according to claim 1, wherein It also includes a force-adding screw (700), and the mold battery frame (100) includes a frame upper plate (120) and a frame support (130). The frame upper plate (120) is connected to the frame support (130). The frame upper plate (120) is provided with an upper plate threaded hole (121). The upper plate threaded hole (121) is correspondingly provided with the force-adding screw (700). The upper plate threaded hole (121) is screwed to the force-adding screw (700).

4. A solid electrolyte thickness non-contact testing device according to claim 3, wherein It also includes a pressure rod (710), an upper pole post (400) including an upper column (430) and an upper support part (440), the upper column (430) is connected to the upper support part (440), the upper support part (440) is connected to the upper lead wire (420), the pressure rod (710) is connected to the upper support part (440), one end of the force-applying screw (700) is connected to the pressure rod (710), and the upper column (430) is disposed in the sleeve (300) and slidably connected to the sleeve (300).

5. A solid electrolyte thickness non-contact testing device according to claim 3, wherein The force-applying screw (700) includes a torque wrench (720) located at the end of the force-applying screw (700) away from the upper pole (400).

6. A solid electrolyte thickness non-contact testing device according to claim 1, wherein It also includes an upper sealing ring (450) and a lower sealing ring (230). The upper pole (400) is sealed to the sleeve (300) through the upper sealing ring (450), and the lower pole (200) is sealed to the sleeve (300) through the lower sealing ring (230).

7. A solid electrolyte thickness non-contact testing device according to claim 6, wherein The sleeve (300) is provided with a head groove (310), and the upper sealing ring (450) is provided at the bottom of the head groove (310).

8. A solid electrolyte thickness non-contact testing device according to claim 7, wherein The sleeve head (460) is provided with a head hole, the sleeve head (460) is correspondingly provided with the head groove (310), the upper pole (400) is correspondingly provided with the head hole, and the upper pole (400) is in sliding connection with the sleeve (300) after penetrating through the head hole and the upper sealing ring (450).

9. A solid electrolyte thickness non-contact testing device according to any one of claims 1-8, wherein, The horizontal test table (800) is further included, and the mold battery frame (100) and the height ruler (500) are arranged on the horizontal test table (800).

10. A solid electrolyte thickness non-contact testing method, using the solid electrolyte thickness non-contact testing device according to any one of claims 1 to 9, characterized in that, The upper pole, the sleeve and the lower pole are assembled, the upper pole and the lower pole are abutted in the sleeve, and a test pressure of a preset pressure value is applied to the upper pole; The height pointer of the height calibration rod is moved, and the initial height measured by the height ruler is recorded when the buzzer triggers the short-circuit buzzer function; The solid electrolyte powder or film material is arranged between the upper pole and the lower pole in the sleeve, and the test pressure is applied to the upper pole; The height pointer of the height calibration rod is moved, and the test height measured by the height ruler is recorded when the buzzer triggers the short-circuit buzzer function; The thickness of the solid electrolyte powder or film material under the test pressure is determined according to the test height and the initial height. ​

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