Die for testing solid-state battery

Abstract

The utility model discloses a mould for testing a solid-state battery, which belongs to the technical field of batteries and comprises a pressure control component and an electrochemical testing component, the pressure control component provides pressure support for the electrochemical testing component and comprises an eccentric wheel component and a support component, and the eccentric wheel component is positioned above the support component. The eccentric wheel assembly comprises an eccentric wheel handle embedded with an eccentric shaft, and the eccentric wheel handle is further provided with a limiting hole for limiting the pulling range of the eccentric wheel handle. The supporting assembly comprises a second stand column fixed to the bottom pressure-resistant frame, the first stand column is rotatably inserted into the second stand column in a threaded fit mode, the first stand column can be inserted into the top pressure-resistant frame in a self-axis rotating mode, and the top of the first stand column is connected with the eccentric shaft. According to the utility model, the problem of inconsistent stack pressure in a battery test is solved, and the pressure test process is optimized while the test precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery testing mold and a battery testing device. Background Art

[0002] All-solid-state batteries have become a research focus for next-generation energy storage technologies due to their potential high safety, high energy density, and wide operating temperature range. Compared to traditional liquid electrolyte batteries, solid-state batteries use solid electrolytes instead of flammable organic solvents, greatly improving battery safety. However, a key challenge facing solid-state batteries during design and manufacturing is how to apply appropriate stacking pressure between battery components to ensure good contact between the electrodes and the solid electrolyte, thereby avoiding increased internal resistance and decreased battery performance due to poor contact.

[0003] In the testing and production process of solid-state batteries, applying stack pressure usually relies on specially designed battery fixtures. Most current fixture designs are based on traditional bolt tightening mechanisms, where the pressure of the battery assembly is controlled by manually tightening the bolts. For example, patent CN219737364U describes a stainless steel fixture whose structure includes a top pressure-resistant frame and a bottom bracket, with columns and bottom grooves on the bracket, and through holes on the pressure-resistant frame. The entire mold applies and maintains the required stack pressure through three nut tightening devices to ensure proper compression of the electrolyte and accuracy of the electrochemical test.

[0004] During the operation process, the operator needs to tighten multiple bolts on the fixture one by one to achieve the predetermined stack pressure. During the test, in order to maintain a constant stack pressure, the operator needs to constantly monitor the pressure gauge and adjust the tightness of the bolts as needed. If the stack pressure needs to be changed, the operator must first loosen the bolts, adjust them, and then retighten them. This process significantly extends the time for battery replacement and test preparation, and reduces the overall efficiency of the test process. In addition, it is difficult to dynamically adjust the stack pressure during the test, which limits the comprehensive evaluation of the battery performance under different pressure conditions. The uncertainty of manual operation may also lead to inconsistent stack pressures for each test, which in turn affects the accuracy and repeatability of the test data. How to improve operational efficiency, simplify pressure adjustment, and improve pressure control accuracy is a major challenge in improving the performance of solid-state batteries. Summary of the Invention

[0005] In response to the problems existing in the existing technology, the utility model fully considers the design requirements in all-solid-state battery testing and provides a mold for solid-state battery testing, which effectively solves the problem of inconsistent stack pressure in battery testing, improves test accuracy and optimizes the pressure testing process.

[0006] A mold for solid-state battery testing includes a pressure control component and an electrochemical testing component. The pressure control component includes an eccentric wheel component 1 and a support component. The eccentric wheel component 1 is located above the support component. The eccentric wheel component 1 includes an eccentric wheel handle 11, an eccentric shaft 12, an eccentric shaft hole 111 on the eccentric wheel handle 11, and a limiting hole 112 for limiting the moving range of the eccentric wheel handle 11. A threaded through hole 121 is provided on the cylindrical surface of the eccentric shaft 12, and the eccentric shaft 12 is embedded in the eccentric shaft hole 111.

[0007] The support assembly includes a first column 21, a second column 22, a top pressure-resistant frame 23, and a bottom pressure-resistant frame 24. The top pressure-resistant frame 23 is provided with a first connecting hole 231, and the bottom pressure-resistant frame 24 is provided with a second connecting hole 241. The middle section of the first column 21 is bulged, and the outer diameter of the bulged middle section is larger than the inner diameter of the first connecting hole 231. The second column 22 is detachably fixed to the bottom pressure-resistant frame 24 through the second connecting hole 241. The first column 21 can be rotatably plugged into the second column 22 through threaded fitting. The distance between the first column 21 and the second column 22 can be adjusted by rotation to adjust the pressure range, thereby realizing the preliminary adjustment of the pressure of the mold for solid-state battery testing. The first column 21 can be rotatably inserted into the top pressure-resistant frame 24 on its own axis. The first connecting hole 231 of the pressure frame 23 and the top of the first column 21 pass through the first connecting hole 231 and the limiting hole 112 of the eccentric wheel assembly 1 in sequence and are connected to the threaded through hole 121 on the eccentric shaft 12, so that the eccentric wheel handle 11 is fixed to the upper position of the top pressure-resistant frame 23, and the first column 21 is limited to the bottom of the top pressure-resistant frame 23 through the bulging part of the middle section. Compared with the traditional bolt tightening method to adjust the pressure, the addition of the eccentric wheel assembly 1, on the one hand, cooperates with the initial pressure adjustment of the first column 21 and the second column 22 to further realize the precise control of the pressure, thereby realizing the rapid tightening or loosening of the top pressure-resistant frame, avoiding a series of problems caused by unstable pressure control when adjusting the pressure by traditional bolt tightening.

[0008] The electrochemical test assembly includes an upper electrode column 311, a lower electrode column 312, a battery mold group 32, and an electrode copper column 33. The upper electrode column 311 and the lower electrode column 312 are provided with a plug hole 313. The upper electrode column 311 and the lower electrode column 312 are respectively inserted into the two ends of the battery mold group 32. During testing, they can achieve electrical contact with the object to be tested (such as a solid electrolyte) (for example, they can directly achieve electrical contact by direct contact) to improve the test sensitivity. The electrode copper column 33 is respectively inserted into the plug hole 313 of the upper electrode column 311 and the lower electrode column 312, and can be used to connect the power supply during testing.

[0009] A groove is provided at the axis below the top pressure-resistant frame 23, and the upper electrode column 311 is stuck in the groove. Similarly, a groove can also be provided at the axis above the bottom pressure-resistant frame 24, and the lower electrode column 312 is stuck in the groove. The groove is used to limit the upper electrode column 311 and the lower electrode column 312 to prevent displacement. The top pressure-resistant frame 23, the upper electrode column 311, the battery mold cylinder 32, the lower electrode column 312 and the bottom pressure-resistant frame 24 are coaxial.

[0010] As some optimized solutions, the eccentric distance of the eccentric wheel assembly 1 is limited to 3mm, and the eccentric wheel assembly 1 drives the first column 21 to move in a range of 0 to 30mm. By setting the eccentric distance, the moving range of the first column 21 can be precisely controlled, thereby achieving precise control of the pressure during the pressurization process, avoiding the errors caused by manual pressure adjustment of traditional battery test molds, and at the same time improving the test efficiency and simplifying the test process; in addition, the limitation of the opening range of the limiting hole 112 helps to control the movement range of the first column 21 connected to the eccentric wheel assembly 1, so as to achieve more precise control of the pressure. At the same time, the limitation of the opening angle of the limiting hole 112 can also protect the remaining components of the solid-state battery test mold, and prevent the excessive movement of the eccentric wheel from causing the linkage component to exceed the predetermined range and affect the solid-state battery test mold.

[0011] As some optimized solutions, the pressure test control assembly also includes an eccentric wheel gasket 25, which is sleeved on the first column 21 and located between the eccentric wheel assembly 1 and the top pressure-resistant frame 23. The addition of the eccentric wheel gasket 25 helps to stabilize the eccentric wheel assembly 1 during the pressure adjustment process on the top pressure-resistant frame 23, and avoids the problem of pressure adjustment error caused by unstable connection of the eccentric wheel assembly 1.

[0012] As some optimized solutions, 3-5 first connecting holes 231 can be set on the top pressure-resistant frame 23 (3 in the figure), which are evenly distributed in concentric circles. The concentric circles are coaxial with the above-mentioned top pressure-resistant frame 23, upper electrode column 311, battery mold group 32, lower electrode column 312, or bottom pressure-resistant frame 24. The corresponding eccentric wheel assembly 1, second column 22 and second connecting holes 241 on the bottom pressure-resistant frame 24 have the same number and distribution as the first connecting holes 231.

[0013] As some optimized solutions, the thread of the first column 21 is double-threaded, which helps to achieve precise control of the connection distance between the first column 21 and the second column 22 and provide more stable support for the pressure control component.

[0014] As some optimized solutions, the first column 21 is 92 mm long and the second column is 63 mm long.

[0015] As some optimized solutions, the electrochemical test assembly may further include an upper insulating gasket 41 and a lower insulating gasket 42. The upper insulating gasket 41 is located between the top pressure-resistant frame 23 and the upper electrode column 311 and is placed in the groove of the top pressure-resistant frame 23. The lower insulating gasket 42 is located between the lower electrode columns 312 of the bottom pressure-resistant frame 24 and is placed in the groove of the bottom pressure-resistant frame 24. The addition of the upper insulating gasket 41 and the lower insulating gasket 42 helps to provide electrical insulation and prevent short circuits between different electrodes inside the battery, thereby ensuring the safety and effectiveness of the battery during operation.

[0016] As some optimized solutions, the battery mold group 32 may include a mold barrel 321, an upper sealing cover 322 and a lower sealing cover 323. The upper sealing cover 322 and the lower sealing cover 323 are respectively provided with through holes matching the upper electrode column 311 and the lower electrode column 312. When connected, the upper electrode column 311 and the lower electrode column 312 are respectively inserted into the battery mold barrel through the through holes of the upper sealing cover 322 and the lower sealing cover 323. The addition of the sealing cover helps to isolate the solid-state battery test mold from external air and prevent the solid-state electrolyte from absorbing water and failing.

[0017] As some optimized solutions, the mold cylinder 321 has a radius of 22 mm and a height of 34.5 mm.

[0018] As some optimized solutions, sealing rings are provided at the through-hole interfaces of the upper sealing cover 322 and the lower sealing cover 323 to better isolate the external air.

[0019] As some optimized solutions, the plug holes 313 on the upper electrode column 311 and the lower electrode column 312 are threaded holes, and one end of the conductive copper column 33 is provided with an external thread matching the plug holes 313 on the upper electrode column 311 and the lower electrode column 312.

[0020] As some optimized solutions, the upper electrode column 311 is 42.5 mm high, and the lower electrode column 312 is 38.5 mm high.

[0021] As some optimized solutions, the mold cylinder 321 is covered with an insulating battery sleeve, which can be used to fix and protect the battery and increase the safety of the mold for solid-state battery testing.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] The utility model introduces an eccentric wheel assembly into a mold for solid-state battery testing, which greatly shortens the time required for battery replacement and stack pressure maintenance, and improves the overall efficiency of the testing process; at the same time, by splitting the overall column into two parts, a highly flexible adjustment function is achieved. After the pressure range is roughly adjusted by the adjustable column, further precise control can be performed through the eccentric wheel assembly, ensuring that the stack pressure is highly consistent in each test, thereby improving the reliability and comparability of the test data; finally, the modular design makes maintenance and replacement easy. If some components are damaged, they can be replaced separately without replacing the entire device, reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 A side view of a mold for solid-state battery testing.

[0026] Figure 2 This is a schematic diagram of the structure of the mold for solid-state battery testing;

[0027] Figure 3 Schematic diagram of the eccentric wheel assembly structure;

[0028] Figure 4 This is a top view of the top pressure frame;

[0029] Figure 5 This is a top view of the bottom pressure frame;

[0030] Among them, 1-eccentric wheel assembly; 11-eccentric wheel handle; 111-eccentric shaft hole; 112-limiting hole; 12-eccentric shaft; 121-threaded through hole; 21-first column; 22-second column; 23-top pressure-resistant frame; 231-first connecting hole; 24-bottom pressure-resistant frame; 241-second connecting hole; 25-eccentric wheel gasket; 311-upper electrode column; 312-lower electrode column; 313-plug hole; 32-battery mold group; 321-mold cylinder; 322-upper sealing cover; 323-lower sealing cover; 33-electrode copper column; 41-upper insulating gasket; 42-lower insulating gasket. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the accompanying drawings. Embodiments of the present invention are given, but the scope of the present invention is not limited thereby.

[0033] The utility model discloses a mold for solid-state battery testing.

[0034] like Figure 1-5 A solid-state battery test mold includes a pressure control component and an electrochemical test component. The pressure control component includes an eccentric wheel component 1 and a support component. The eccentric wheel component 1 is located above the support component. The eccentric wheel component 1 includes an eccentric wheel handle 11, an eccentric shaft 12, an eccentric shaft hole 111 on the eccentric wheel handle 11, and a limiting hole 112 (such as Figure 2 ), a threaded through hole 121 is provided on the cylindrical surface of the eccentric shaft 12, and the eccentric shaft 12 is embedded in the eccentric shaft hole 111.

[0035] The support assembly includes a first column 21, a second column 22, a top pressure-resistant frame 23, and a bottom pressure-resistant frame 24. The top pressure-resistant frame 23 is provided with a first connecting hole 231, and the bottom pressure-resistant frame 24 is provided with a second connecting hole 241. The middle section of the first column 21 is bulged, and the outer diameter of the bulged middle section is larger than the inner diameter of the first connecting hole 231. The second column 22 is detachably fixed to the bottom pressure-resistant frame 24 through the second connecting hole 241. The first column 21 can be rotatably plugged into the second column 22 through threaded fitting. The distance between the first column 21 and the second column 22 can be adjusted by rotation to adjust the pressure range, thereby realizing the preliminary adjustment of the pressure of the mold for solid-state battery testing. The first column 21 can be rotatably inserted into the top pressure-resistant frame The first connecting hole 231 of the pressure frame 23 and the top of the first column 21 pass through the first connecting hole 231 and the limiting hole 112 of the eccentric wheel assembly 1 in sequence and are connected to the threaded through hole 121 on the eccentric shaft 12, so that the eccentric wheel handle 11 is fixed to the upper position of the top pressure-resistant frame 23, and the first column 21 is limited to the bottom of the top pressure-resistant frame 23 through the bulging part of the middle section. Compared with the traditional bolt tightening method to adjust the pressure, the addition of the eccentric wheel assembly 1, on the one hand, cooperates with the initial pressure adjustment of the first column 21 and the second column 22 to further realize the precise control of the pressure, thereby realizing the rapid tightening or loosening of the top pressure-resistant frame, avoiding a series of problems caused by unstable pressure control when adjusting the pressure by traditional bolt tightening.

[0036] like Figure 1 The electrochemical test assembly includes an upper electrode column 311, a lower electrode column 312, a battery mold group 32, and an electrode copper column 33. The upper electrode column 311 and the lower electrode column 312 are provided with a plug hole 313. The upper electrode column 311 and the lower electrode column 312 are respectively inserted into the two ends of the battery mold group 32. During testing, they can achieve electrical contact with the object to be tested (such as a solid electrolyte) (for example, they can directly achieve electrical contact by direct contact) to improve the test sensitivity. The electrode copper column 33 is respectively inserted into the plug hole 313 of the upper electrode column 311 and the lower electrode column 312, and can be used to connect the power supply during testing.

[0037] A groove is provided at the axis below the top pressure-resistant frame 23, and the upper electrode column 311 is stuck in the groove. Similarly, a groove can also be provided at the axis above the bottom pressure-resistant frame 24, and the lower electrode column 312 is stuck in the groove. The groove is used to limit the upper electrode column 311 and the lower electrode column 312 to prevent displacement. The top pressure-resistant frame 23, the upper electrode column 311, the battery mold cylinder 32, the lower electrode column 312 and the bottom pressure-resistant frame 24 are coaxial.

[0038] As some optimized solutions, the eccentric distance of the eccentric wheel assembly 1 is limited to 3mm, and the eccentric wheel assembly 1 drives the first column 21 to move in a range of 0 to 30mm. By setting the eccentric distance, the moving range of the first column 21 can be precisely controlled, thereby achieving precise control of the pressure during the pressurization process, avoiding the errors caused by manual pressure adjustment of traditional battery test molds, and at the same time improving the test efficiency and simplifying the test process; in addition, the limitation of the opening range of the limiting hole 112 helps to control the movement range of the first column 21 connected to the eccentric wheel assembly 1, so as to achieve more precise control of the pressure. At the same time, the limitation of the opening angle of the limiting hole 112 can also protect the remaining components of the solid-state battery test mold, and prevent the excessive movement of the eccentric wheel from causing the linkage component to exceed the predetermined range and affect the solid-state battery test mold.

[0039] As some optimized solutions, the pressure test control assembly also includes an eccentric wheel gasket 25, which is sleeved on the first column 21 and located between the eccentric wheel assembly 1 and the top pressure-resistant frame 23. The addition of the eccentric wheel gasket 25 helps to stabilize the eccentric wheel assembly 1 during the pressure adjustment process on the top pressure-resistant frame 23, and avoids the problem of pressure adjustment error caused by unstable connection of the eccentric wheel assembly 1.

[0040] As some optimized solutions, 3-5 first connecting holes 231 can be set on the top pressure-resistant frame 23 (3 in the figure), which are evenly distributed in concentric circles. The concentric circles are coaxial with the above-mentioned top pressure-resistant frame 23, upper electrode column 311, battery mold group 32, lower electrode column 312, or bottom pressure-resistant frame 24. The corresponding eccentric wheel assembly 1, second column 22 and second connecting holes 241 on the bottom pressure-resistant frame 24 have the same number and distribution as the first connecting holes 231.

[0041] As some optimized solutions, the thread of the first column 21 is double-threaded, which helps to achieve precise control of the connection distance between the first column 21 and the second column 22 and provide more stable support for the pressure control component.

[0042] As some optimized solutions, the first column 21 is 92 mm long and the second column is 63 mm long.

[0043] As some optimized solutions, the electrochemical test assembly may further include an upper insulating gasket 41 and a lower insulating gasket 42. The upper insulating gasket 41 is located between the top pressure-resistant frame 23 and the upper electrode column 311 and is placed in the groove of the top pressure-resistant frame 23. The lower insulating gasket 42 is located between the lower electrode columns 312 of the bottom pressure-resistant frame 24 and is placed in the groove of the bottom pressure-resistant frame 24. The addition of the upper insulating gasket 41 and the lower insulating gasket 42 helps to provide electrical insulation and prevent short circuits between different electrodes inside the battery, thereby ensuring the safety and effectiveness of the battery during operation.

[0044] As some optimized solutions, the battery mold group 32 may include a mold barrel 321, an upper sealing cover 322 and a lower sealing cover 323. The upper sealing cover 322 and the lower sealing cover 323 are respectively provided with through holes matching the upper electrode column 311 and the lower electrode column 312. When connected, the upper electrode column 311 and the lower electrode column 312 are respectively inserted into the battery mold barrel through the through holes of the upper sealing cover 322 and the lower sealing cover 323. The addition of the sealing cover helps to isolate the solid-state battery test mold from external air and prevent the solid-state electrolyte from absorbing water and failing.

[0045] As some optimized solutions, the mold cylinder 321 has a radius of 22 mm and a height of 34.5 mm.

[0046] As some optimized solutions, sealing rings are provided at the through-hole interfaces of the upper sealing cover 322 and the lower sealing cover 323 to better isolate the external air.

[0047] As some optimized solutions, the plug holes 313 on the upper electrode column 311 and the lower electrode column 312 are threaded holes, and one end of the conductive copper column 33 is provided with an external thread matching the plug holes 313 on the upper electrode column 311 and the lower electrode column 312.

[0048] As some optimized solutions, the upper electrode column 311 is 42.5 mm high, and the lower electrode column 312 is 38.5 mm high.

[0049] As some optimized solutions, the mold cylinder 321 is covered with an insulating battery sleeve, which can be used to fix and protect the battery and increase the safety of the mold for solid-state battery testing.

[0050] When the solid-state battery test mold is used for testing, first open the eccentric wheel assembly 1, so that the first column 21 is in a relaxed state in the first connecting hole 231 on the top pressure-resistant frame 23 and can rotate on its own axis, rotate the first column 21 to separate it from the second column 22 fixed on the bottom pressure-resistant frame 24, insert the battery mold group 32 into the lower electrode column 312, and load the solid electrolyte into the battery mold group 32. Then, insert the upper electrode column 311 into the battery mold group 32, and screw the first column 21 to the second column 22 by rotating it. Connect and apply external pressure. As the pressure increases to the target pressure range, the first column 21 is gradually adjusted to the target connection height by rotating with the second column 22 to achieve coarse adjustment of the pressure within the target height range. Then, the eccentric wheel handle is rotated and pressed down to fine-tune the height of the first column 21 and the second column 22 to achieve fine adjustment of the pressure. After the adjustment is completed, the external pressure is released and the electrode copper column 33 is connected to carry out the electrochemical performance test. After the test is completed, the eccentric wheel handle is rotated in the opposite direction and the mold is removed to complete one test.

[0051] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and should not be construed as limiting the present invention. Those skilled in the art may modify, alter, replace, and distort the above embodiments within the scope of the present invention. Furthermore, those skilled in the art may combine and incorporate the different embodiments or examples described in this specification, as well as features of the different embodiments or examples, without conflicting with each other.

Claims

1. A mold for solid-state battery testing, comprising a pressure control component and an electrochemical test component, wherein the pressure control component is used to provide pressure for the electrochemical test component; the pressure control component comprises an eccentric wheel component (1) and a support component, wherein the eccentric wheel component (1) is located above the support component, the eccentric wheel component (1) comprises an eccentric wheel handle (11) embedded with an eccentric shaft (12), and the eccentric wheel handle (11) is also provided with a limiting hole (112) for limiting the range of movement of the eccentric wheel handle (11); the support component comprises a second column (22) detachably fixed to a bottom pressure-resistant frame (24), a first column (21) rotatably plugged into the second column (22) through threaded engagement, the first column (21) can be rotatably inserted into the top pressure-resistant frame (23) on its own axis, and the top of the first column (21) passes through the limiting hole (112) of the eccentric wheel component (1) and is connected to the eccentric shaft (12).

2. The solid-state battery testing mold according to claim 1, characterized in that: The electrochemical test assembly comprises an upper electrode column (311), a lower electrode column (312), a battery mold group (32), and an electrode copper column (33); the upper electrode column (311) and the lower electrode column (312) are provided with a plug hole (313); the upper electrode column (311) and the lower electrode column (312) are respectively inserted into the two ends of the battery mold group (32); and the electrode copper column (33) is respectively inserted into the plug hole (313) of the upper electrode column (311) and the lower electrode column (312); Preferably, the plug holes (313) on the upper electrode column (311) and the lower electrode column (312) are threaded holes, and one end of the conductive copper column (33) is provided with an external thread matching the plug holes (313) on the upper electrode column (311) and the lower electrode column (312).

3. The solid-state battery testing mold according to claim 1, characterized in that: The top pressure-resistant frame 23 and the bottom pressure-resistant frame (24) are respectively provided with grooves for limiting the upper electrode column (311) and the lower electrode column (312).

4. The solid-state battery testing mold according to claim 1, characterized in that: The eccentric distance of the eccentric wheel assembly 1 is 3 mm, and the eccentric wheel assembly (1) drives the first column (21) to move within a range of 0 to 30 mm.

5. The solid-state battery testing mold according to claim 1, characterized in that: The pressure test control assembly (1) further comprises an eccentric wheel gasket (25), which is sleeved on the first column (21) and located between the eccentric wheel assembly (1) and the top pressure-resistant frame (23).

6. The solid-state battery testing mold according to claim 1, characterized in that: The top pressure-resistant frame (23) is provided with a first connecting hole (231) for connecting the first column (21) and the eccentric shaft (12), and the bottom pressure-resistant frame (24) is provided with a second connecting hole (241) for detachably fixing the second column (22); Preferably, 3 to 5 first connection holes (231) can be provided, which are evenly distributed in concentric circles, and the concentric top pressure-resistant frame (23), the upper electrode column (311), the battery mold group (32), the lower electrode column (312) and the bottom pressure-resistant frame (24) are coaxial, and the corresponding second connection holes (241) on the eccentric wheel assembly (1), the second column (22) and the bottom pressure-resistant frame (24) have the same number and distribution as the first connection holes (231).

7. The solid-state battery testing mold according to claim 1, characterized in that: The electrochemical test assembly further comprises an upper insulating gasket (41) and a lower insulating gasket (42), wherein the upper insulating gasket (41) is located between the top pressure-resistant frame (23) and the upper electrode column (311), and is placed in a groove of the top pressure-resistant frame (23); and the lower insulating gasket (42) is located between the lower electrode column (312) of the bottom pressure-resistant frame (24), and is placed in the groove of the bottom pressure-resistant frame (24).

8. The solid-state battery testing mold according to claim 2, characterized in that: The battery mold assembly 32 comprises a mold barrel (321), an upper sealing cover (322) and a lower sealing cover (323). The upper sealing cover (322) and the lower sealing cover (323) are respectively provided with through holes matching the upper electrode column (311) and the lower electrode column (312). When connected, the upper electrode column (311) and the lower electrode column (312) are respectively inserted into the battery mold barrel through the through holes of the upper sealing cover (322) and the lower sealing cover (323). Preferably, sealing rings are provided at the through-hole interfaces of the upper sealing cover (322) and the lower sealing cover (323).

9. The solid-state battery testing mold according to claim 1, characterized in that: The first column (21) has a double thread.

10. The solid-state battery testing mold according to claim 8, characterized in that: An insulating battery sleeve is sleeved on the mold cylinder (321).

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