Solid-state electrolyte electrical performance test mold device capable of accurately measuring thickness

Abstract

The utility model discloses a solid electrolyte electrical property test mould device of accurate thickness measurement, including test mould and fixed mechanism, and fixed mechanism is used for fixing test mould to operation platform, and test mould includes: upper pressure head, upper pressure head is used for pressing solid electrolyte ceramic sheet and as a part of conductive loop, and there is scale on the upper face simultaneously, can accurate reading solid electrolyte sheet's thickness, mould main part, mould main part includes: outer cavity and inner cavity total, the utility model relates to solid battery technical field. The solid electrolyte electrical property test mould device of accurate thickness measurement of this can not need external device to continue to press, can directly connect into electrochemistry workstation and carry out a series of electrochemistry performance test, and according to thread scale realizes solid electrolyte ceramic sheet thickness's direct reading, can directly spin out demoulding after reading thickness, has the characteristics such as data reading accurate simple and easy and even pressure.

Description

Technical Field

[0001] This utility model relates to the field of solid-state battery technology, specifically to a solid electrolyte electrical performance testing mold device that can accurately measure the thickness. Background Technology

[0002] With increasingly higher requirements for battery energy density, research on all-solid-state batteries has received considerable attention. However, in the study of inorganic solid-state batteries, conventional coin cells face difficulties in assembling the electrolyte sheet and positive and negative electrodes.

[0003] The patent publication number CN218350460U discloses a solid-state battery test mold, which includes an outer sleeve and multiple petals. The multiple petals are arranged to form an inner sleeve, which is used to hold the battery. The outer sleeve is fitted outside the inner sleeve. The outer side of the inner sleeve is a conical surface. The inner side of the outer sleeve matches the shape of the outer side of the inner sleeve. The opening diameter at the top of the outer sleeve is larger than the outer diameter at the top of the inner sleeve.

[0004] As shown in the above technology, to address the problems of existing mold devices used for testing solid electrolyte powders, such as the need for continuous external pressure, easy breakage of solid electrolyte ceramic sheets during demolding and testing of ceramic sheet thickness, uneven stress, and difficulty in cleaning the inner cavity wall, a solid electrolyte electrical performance testing mold device that can accurately measure thickness is provided. It does not require an additional device to apply pressure and can be directly connected to an electrochemical workstation to perform a series of electrical performance tests. It can also directly read the thickness of the solid electrolyte ceramic sheet according to the thread scale, and has the characteristics of accurate and convenient data reading, uniform pressure application, and pressure holding. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a solid electrolyte electrical performance testing mold device that can accurately measure thickness, solving the problems of solid electrolyte ceramic sheet breakage, uneven stress, and difficulty in cleaning the inner cavity wall in existing solid electrolyte electrical performance testing mold devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A solid electrolyte electrical performance testing mold device capable of accurately measuring thickness includes a testing mold and a fixing mechanism, wherein the fixing mechanism is used to fix the testing mold to an operating table, and the testing mold includes: The upper pressure head is used to press the solid electrolyte ceramic sheet and as part of the conductive circuit, and it has a scale on it to accurately read the thickness of the solid electrolyte sheet. The mold body includes an outer cavity and an inner cavity assembly, the inner cavity assembly including a first accommodating space; A pressure head, used in conjunction with a pressure-applying structure to press a solid electrolyte ceramic sheet, and as part of a conductive circuit.

[0007] Preferably, the upper pressure head has threads near its bottom; the diameter of the upper pressure head is the same as the inner diameter of the mold body; the length of the upper pressure head is the same as the height of the mold body; the bottom of the upper pressure head has a threaded structure, and the threaded structure has thread markings.

[0008] Preferably, the inner diameter of the mold body is the same as the diameter of the upper pressure head and the mold body; the upper half of the inner cavity includes a threaded structure that mates with the upper pressure head, and the lower half of the inner cavity includes a threaded structure that mates with the lower pressure head.

[0009] Preferably, the lower pressure head includes threads; the diameter of the lower pressure head is the same as the inner cavity diameter of the mold body; both the upper pressure head and the lower pressure head are made of conductive metal and also serve as current collectors.

[0010] Preferably, the fixing mechanism includes a support assembly and a clamping assembly. The support assembly includes a base, and three first slide rods are fixedly connected at equal intervals to the top of the base. A stop block is fixedly connected to the surface of each first slide rod. Three connecting seats are fixedly connected at equal intervals to the surface of the mold body. The mold body is sleeved on the three first slide rods through the connecting seats. A fixing rod is fixedly connected to the surface of the base. A movable arm is slidably connected to the surface of the fixing rod. A locking bolt is threaded to the top of the movable arm, and the locking bolt is used to lock the position of the movable arm.

[0011] Preferably, the clamping assembly includes an L-shaped plate, which is fixedly connected to the bottom of the moving arm. Two second slide rods are slidably connected to the bottom of the L-shaped plate, and a pressure plate is fixedly connected to one end of each of the two second slide rods. A lead screw is threaded to the bottom of the L-shaped plate, and one end of the lead screw is rotatably connected to the bottom of the pressure plate. Beneficial effects

[0012] This invention provides a solid electrolyte electrical performance testing mold device capable of accurately measuring thickness. Compared with the prior art, it has the following advantages: 1. This solid electrolyte electrical performance testing mold device, capable of accurately measuring thickness, includes an upper pressure head used to press the solid electrolyte ceramic sheet and serve as part of a conductive circuit. The upper pressure head has graduations that allow for precise reading of the solid electrolyte sheet's thickness. It eliminates the need for continuous external pressure and can be directly connected to an electrochemical workstation for a series of electrochemical performance tests. The thickness of the solid electrolyte ceramic sheet can be directly read based on the threaded graduations. After reading the thickness, the electrolyte ceramic sheet can be directly unscrewed. It features accurate and convenient data reading and uniform pressure application.

[0013] 2. The solid electrolyte electrical performance testing mold device that can accurately measure thickness includes a support component and a clamping component through a fixing mechanism. The support component includes a base, and three first slide rods are fixedly connected at equal intervals on the top of the base. The surface of the first slide rods is fixedly connected with a stop block. During the test, the fixing mechanism fixes the position of the entire device, thereby effectively preventing the test mold from moving during the test operation and facilitating the stable test. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the appearance of the present utility model; Figure 2 This is a cross-sectional view of the main body of the mold of this utility model; Figure 3 This is a partial schematic diagram of the present invention; Figure 4 This is an enlarged view of part A of this utility model.

[0015] In the diagram: 1. Test mold; 11. Upper pressure head; 12. Mold body; 13. Lower pressure head; 2. Support assembly; 21. Base; 22. First slide rod; 23. Stop block; 24. Connecting seat; 25. Fixed rod; 26. Moving arm; 27. Locking bolt; 3. Clamping assembly; 31. L-shaped plate; 32. Second slide rod; 33. Pressure plate; 34. Lead screw. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 This solid electrolyte electrical performance testing mold device, capable of accurately measuring thickness, offers two technical solutions: The first embodiment includes a test mold 1 and a fixing mechanism, wherein the fixing mechanism is used to fix the test mold 1 to the operating table, and the test mold 1 includes: The upper pressure head 11 is used to press the solid electrolyte ceramic sheet and serve as part of the conductive circuit. It also has a scale on it to accurately read the thickness of the solid electrolyte sheet. The upper pressure head 11 has threads near its bottom. The diameter of the upper pressure head 11 is the same as the inner diameter of the mold body 12. The length of the upper pressure head 11 is the same as the height of the mold body 12. The bottom of the upper pressure head 11 has a threaded structure with threaded scale. The mold body 12 includes an outer cavity and an inner cavity, the inner cavity containing a first accommodating space, the inner cavity diameter of the mold body 12 being consistent with the diameter of the upper pressure head 11 and the mold body 12; the upper half of the inner cavity contains a threaded structure that mates with the upper pressure head 11, and the lower half of the inner cavity contains a threaded structure that mates with the lower pressure head 13. The lower pressure head 13 is used together with the pressure application structure to press the solid electrolyte ceramic sheet and serves as part of the conductive circuit. The lower pressure head 13 includes threads. The diameter of the lower pressure head 13 is the same as the inner cavity diameter of the mold body 12. Both the upper pressure head 11 and the lower pressure head 13 are made of conductive metal and also serve as current collectors.

[0018] Without the need for continuous external pressure, it can be directly connected to an electrochemical workstation to perform a series of electrochemical performance tests. It can also directly read the thickness of the solid electrolyte ceramic sheet according to the thread scale. After reading the thickness, the electrolyte ceramic sheet can be directly unscrewed. It features accurate and convenient data reading and uniform pressure application.

[0019] The second embodiment differs from the first embodiment in that the fixing mechanism includes a support component 2 and a clamping component 3. The support component 2 includes a base 21, and three first slide rods 22 are fixedly connected at equal intervals to the top of the base 21. A stop block 23 is fixedly connected to the surface of the first slide rod 22. Three connecting seats 24 are fixedly connected at equal intervals to the surface of the mold body 12. The mold body 12 is sleeved on the three first slide rods 22 through the connecting seats 24. A fixing rod 25 is fixedly connected to the surface of the base 21. A moving arm 26 is slidably connected to the surface of the fixing rod 25. A locking bolt 27 is threadedly connected to the top of the moving arm 26, and the locking bolt 27 is used to lock the position of the moving arm 26.

[0020] The clamping assembly 3 includes an L-shaped plate 31, which is fixedly connected to the bottom of the moving arm 26. Two second slide rods 32 are slidably connected to the bottom of the L-shaped plate 31. One end of each of the two second slide rods 32 is fixedly connected to a pressure plate 33. A lead screw 34 is threadedly connected to the bottom of the L-shaped plate 31, and one end of the lead screw 34 is rotatably connected to the bottom of the pressure plate 33.

[0021] During testing, the entire device is fixed in position by a fixing mechanism, which effectively prevents the test mold from moving during the testing process and ensures stable testing.

[0022] In use, the mold body 12 is fitted onto the first slide rod 22 via the connecting seat 24, and the locking bolt 27 is loosened. The moving arm 26 is moved, and after adjustment, the adjusting bolt 27 is tightened so that the L-shaped plate 31 can be locked onto the edge of the table. The screw 34 is rotated so that the pressure plate 33 presses down on the table, thereby fixing the entire device. Then, the lower pressure head 13 is screwed into the lower half of the mold body 12 according to the thread. At this time, the top rod part of the lower pressure head 13 is completely in the first accommodating space. Next, a certain mass of solid electrolyte powder is placed in the first accommodating space, and then the upper pressure head 11 is screwed on, using the upper pressure... The combined squeezing action of the upper pressure head 11, the lower pressure head 13, and the inner wall of the mold body 12 compresses the solid electrolyte powder into a ceramic sheet. Finally, the upper pressure head 11 and the lower pressure head 13 are connected to an electrochemical workstation via wires to perform impedance spectroscopy and / or DC polarization tests. After the impedance spectroscopy and / or DC polarization tests are completed, the thread scale value of the mold body 12 can be directly read to obtain the precise thickness of the solid electrolyte ceramic sheet. Then, the lower pressure head 13 is removed from the first accommodating space, and the upper pressure head 11 is continued to be screwed until the solid electrolyte ceramic sheet is removed from the first accommodating space, completing the entire testing process.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A device for testing the electrical properties of a solid electrolyte with precise thickness measurement, characterized in that: The test mold (1) includes a test mold (1) and a fixing mechanism, wherein the test mold (1) includes: The upper pressure head (11) is used to press the solid electrolyte ceramic sheet and as part of the conductive circuit, and has a scale on it to accurately read the thickness of the solid electrolyte sheet. The mold body (12) includes an outer cavity and an inner cavity, the inner cavity comprising a first accommodating space; The pressure head (13) is used together with the pressure application structure to press the solid electrolyte ceramic sheet and serves as part of the conductive circuit.

2. The solid electrolyte electrical performance testing mold device capable of accurately measuring thickness according to claim 1, characterized in that: The upper pressure head (11) has a thread near the bottom of the upper pressure head (11); the diameter of the upper pressure head (11) is the same as the inner diameter of the mold body (12); the length of the upper pressure head (11) is the same as the height of the mold body (12); the bottom of the upper pressure head (11) has a threaded structure, and the threaded structure has a threaded scale.

3. The solid electrolyte electrical performance testing mold device capable of accurately measuring thickness according to claim 1, characterized in that: The inner diameter of the mold body (12) is the same as the diameter of the upper pressure head (11) and the mold body (12); the upper half of the inner cavity contains a threaded structure that mates with the upper pressure head (11), and the lower half of the inner cavity contains a threaded structure that mates with the lower pressure head (13).

4. The solid electrolyte electrical performance testing mold device capable of accurately measuring thickness according to claim 1, characterized in that: The lower pressure head (13) includes threads; the diameter of the lower pressure head (13) is consistent with the inner diameter of the mold body (12); both the upper pressure head (11) and the lower pressure head (13) are made of conductive metal and also serve as a current collector.

5. The solid electrolyte electrical performance testing mold device capable of accurately measuring thickness according to claim 1, characterized in that: The fixing mechanism includes a support component (2) and a clamping component (3). The support component (2) includes a base (21). Three first slide rods (22) are fixedly connected at equal distances to the top of the base (21). A stop block (23) is fixedly connected to the surface of the first slide rod (22). Three connecting seats (24) are fixedly connected at equal distances to the surface of the mold body (12). The mold body (12) is sleeved on the three first slide rods (22) through the connecting seats (24). A fixing rod (25) is fixedly connected to the surface of the base (21). A moving arm (26) is slidably connected to the surface of the fixing rod (25). A locking bolt (27) is threadedly connected to the top of the moving arm (26), and the locking bolt (27) is used to lock the position of the moving arm (26).

6. The solid electrolyte electrical performance testing mold device capable of accurately measuring thickness according to claim 5, characterized in that: The clamping assembly (3) includes an L-shaped plate (31), which is fixedly connected to the bottom of the moving arm (26). Two second slide rods (32) are slidably connected to the bottom of the L-shaped plate (31). One end of each of the two second slide rods (32) is fixedly connected to a pressure plate (33). A lead screw (34) is threadedly connected to the bottom of the L-shaped plate (31), and one end of the lead screw (34) is rotatably connected to the bottom of the pressure plate (33).

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