Pressing device for testing all-solid-state battery

Abstract

The utility model discloses a pressing device for all-solid-state battery testing, and relates to the technical field of all-solid-state battery testing, the pressing device comprises a pressing mold composed of a bottom plate, a threaded fixing column, a sleeving column and a top plate, the threaded fixing column is in threaded connection with the top of the bottom plate, the sleeving column is fixed on the top of the threaded fixing column, and the top plate is fixed on the top of the sleeving column. A plurality of annularly distributed sleeving holes are formed in the top of the top plate, the top plate sleeves the outer side of the sleeving column through the sleeving holes, a self-locking assembly is arranged in the top plate, and the self-locking assembly is used for achieving convenient locking of the top plate and the sleeving column; the top plate exerts pressure through the pressure exerting assembly to achieve pressing operation on the simulation battery. According to the utility model, through the arrangement of the self-locking assembly and the applying assembly, the rapid pressing operation of the pressing mold on the simulated battery can be realized, the bolt does not need to be frequently screwed in the process, the overall operation is simpler and more convenient, and the working efficiency of solid-state battery testing can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of all-solid-state battery testing, in particular to a pressing device for all-solid-state battery testing. Background Technique

[0002] A solid-state battery is a lithium-ion battery that uses solid electrodes and a solid electrolyte. A solid-state battery pressure testing system is an essential device in the research and development and production of solid-state batteries. The current solid-state battery pressure testing system simulates the structure and working principle of solid-state batteries to test and study the electrochemical performance of solid-state batteries with different electrolyte materials under different initial pressures, and records the pressure changes of the battery during the charge and discharge process in real time. The solid-state battery testing mold is a special mold for this system, which can simulate a soft-pack battery to test the performance before assembling a soft-pack battery for a solid-state battery.

[0003] The current solid-state battery testing molds all use a stainless-steel outer frame and an insulating battery mold as the main body, and use metal columns with the same diameter at both ends as pole columns, which are respectively connected to the insulating battery mold, and two pole columns respectively lead out wires to connect to the solid-state battery pressure testing system. For example, the currently commercially available BMO1 solid-state lithium-ion battery testing mold is a typical stainless-steel outer-frame type solid-state battery testing mold.

[0004] There are certain problems with the existing solid-state battery testing molds:

[0005] First of all, after completing the assembly of the simulated battery, it is necessary to manually insert the top plate of the stainless-steel outer frame onto the three columns, and then screw the fixing nuts onto the tops of the three columns respectively to fix the top plate. In order to achieve the required test pressure, it is also necessary to transfer the whole mold to a hydraulic device, and apply an extrusion force to the top plate through the hydraulic device so that the extrusion force applied by the top plate to the simulated battery reaches the test requirements, and then tighten the fixing nuts. The overall operation is relatively cumbersome. In order to simplify this operation, a pressing device for all-solid-state battery testing is provided. Content of the Utility Model

[0006] The purpose of the utility model is to provide a pressing device for all-solid-state battery testing in order to solve the problems in the above background.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A pressing device for all-solid-state battery testing includes a pressing mold composed of a bottom plate, threaded fixing columns, socket columns, and a top plate. The threaded fixing columns are threadedly connected to the top of the bottom plate. The socket columns are fixed to the top of the threaded fixing columns. A plurality of annularly distributed socket holes are provided on the top of the top plate. The top plate is sleeved outside the socket columns through the socket holes. A self-locking component is arranged inside the top plate, and the self-locking component is used to achieve the convenient locking of the top plate and the socket columns.

[0008] The top plate presses the simulated battery by applying pressure through a pressing component;

[0009] The self-locking component includes a convex groove, a T-shaped moving groove, a convex pressing block, a first spring, and a locking block;

[0010] A plurality of annular locking grooves are formed on the outer side of the socket column and are distributed in sequence along the vertical direction;

[0011] The convex groove is opened in the middle of the top plate and penetrates to the top of the top plate. The T-shaped moving groove is opened inside the top plate and communicates with one side of the convex groove. The other side of the T-shaped moving groove communicates with the socket hole;

[0012] The convex pressing block and the first spring are arranged inside the convex groove. The first spring is located at the bottom of the convex pressing block and is used to provide a supporting force for the convex pressing block. The top of the convex pressing block protrudes from the top of the top plate;

[0013] The locking block is horizontally slidably connected to the inside of the T-shaped moving groove. One side of the locking block is attached to one side of the convex pressing block, and the other side of the locking block is clamped inside the annular locking groove to realize the relative fixation of the top plate and the socket column.

[0014] As a further scheme of the present invention: The self-locking component further includes a fixed block and a second spring;

[0015] The fixed block is fixed to the bottom of the locking block and is slidably installed inside the T-shaped moving groove. The second spring is distributed between one side of the fixed block and one side of the inner wall of the T-shaped moving groove and is used to provide a reset thrust for the locking block.

[0016] As a further scheme of the present invention: The number of the T-shaped moving grooves, the locking blocks, and the second springs matches the number of the socket holes and the socket columns, and the elastic force of the first spring is greater than the sum of the elastic forces of the plurality of second springs.

[0017] As a further scheme of the present invention: The top edge of the large-diameter circular block at the bottom of the convex pressing block and the bottom edge of one side of the locking block close to the convex pressing block are both arc-shaped structures.

[0018] As a further scheme of the present invention: The pressing component includes a frame body, a first hydraulic cylinder, a second hydraulic cylinder, a middle pressing disc, and an annular pressing block;

[0019] There are two second hydraulic cylinders. The first hydraulic cylinder and the two second hydraulic cylinders are installed on the top of the frame body, and the two second hydraulic cylinders are symmetrically distributed with the first hydraulic cylinder as the center;

[0020] The output ends of the first hydraulic cylinder and the second hydraulic cylinder penetrate through the top of the frame body and are fixedly connected to the middle pressing plate and the annular pressing block respectively;

[0021] When the first hydraulic cylinder and the middle pressing plate apply an extrusion force to the convex pressing block, it is used to unlock the top plate and the socket column;

[0022] The second hydraulic cylinder and the annular pressing block apply an extrusion force to the top plate, which is used to realize the pressing operation of the top plate on the simulated battery.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] By setting the self-locking component and the applying component, the pressing die can quickly press the simulated battery. During the process, it is not necessary to frequently turn the bolts, and the overall operation is simpler and more convenient, which can effectively improve the working efficiency of the solid-state battery test. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the present utility model;

[0026] Figure 2 It is a structural sectional view of the top plate of the present utility model;

[0027] Figure 3 It is a sectional split view of the top plate of the present utility model;

[0028] Figure 4 It is a schematic structural diagram of the pressing die of the present utility model placed inside the pressing component.

[0029] In the figure: 1. Pressing die; 101. Bottom plate; 102. Threaded fixing column; 103. Socket column; 104. Annular locking groove; 105. Top plate; 106. Socket hole; 2. Self-locking component; 201. Convex groove; 202. T-shaped moving groove; 203. Convex pressing block; 204. First spring; 205. Locking block; 206. Fixed block; 207. Second spring; 3. Pressing component; 301. Frame body; 302. First hydraulic cylinder; 303. Second hydraulic cylinder; 304. Middle pressing plate; 305. Annular pressing block. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figures 1 to 4, in the embodiment of the present utility model, a pressing device for testing an all-solid-state battery includes a pressing die 1 composed of a bottom plate 101, a threaded fixing column 102, a socket column 103, and a top plate 105. The threaded fixing column 102 is threadedly connected to the top of the bottom plate 101. The socket column 103 is fixed to the top of the threaded fixing column 102. A plurality of annularly distributed socket holes 106 are provided at the top of the top plate 105. The top plate 105 is socketed outside the socket column 103 through the socket holes 106. A self-locking assembly 2 is arranged inside the top plate 105, and the self-locking assembly 2 is used to achieve the convenient locking of the top plate 105 and the socket column 103;

[0032] The top plate 105 applies pressure through a pressure application assembly 3 to perform the pressing operation on the simulated battery;

[0033] The self-locking assembly 2 includes a convex groove 201, a T-shaped moving groove 202, a convex pressing block 203, a first spring 204, and a locking block 205;

[0034] A plurality of annular locking grooves 104 are formed on the outer side of the socket column 103 and are distributed in sequence along the vertical direction;

[0035] The convex groove 201 is opened in the middle of the inside of the top plate 105 and penetrates to the top of the top plate 105. The T-shaped moving groove 202 is opened inside the top plate 105 and communicates with one side of the convex groove 201. The other side of the T-shaped moving groove 202 communicates with the socket hole 106;

[0036] The convex pressing block 203 and the first spring 204 are arranged inside the convex groove 201. The first spring 204 is located at the bottom of the convex pressing block 203 and is used to provide a supporting force for the convex pressing block 203. The top of the convex pressing block 203 protrudes from the top of the top plate 105;

[0037] The locking block 205 is horizontally slidably connected to the inside of the T-shaped moving groove 202. One side of the locking block 205 is attached to one side of the convex pressing block 203. The other side of the locking block 205 is clamped inside the annular locking groove 104 to achieve the relative fixation of the top plate 105 and the socket column 103;

[0038] The self-locking assembly 2 further includes a fixing block 206 and a second spring 207;

[0039] The fixing block 206 is fixed to the bottom of the locking block 205 and is slidably installed inside the T-shaped moving groove 202. The second spring 207 is distributed between one side of the fixing block 206 and one side of the inner wall of the T-shaped moving groove 202 and is used to provide a reset thrust for the locking block 205.

[0040] In this embodiment: When assembling the pressing die 1, the threaded fixing post 102 can be first fixedly connected to the bottom plate 101 by threading (it should be added that the bottom plate 101 is provided with threaded holes, and the bottom of the threaded fixing post 102 is formed with corresponding external threads). After that, the pressure sensor and the assembled simulated battery can be placed in order from bottom to top (it should be noted that a groove for positioning and placing the pressure sensor is formed on the upper surface of the bottom plate 101, and the pressure sensor is used to monitor the force condition of the simulated battery). Then, the top plate 105 is sleeved outside the socket post 103;

[0041] During this process, it is necessary to manually press the convex pressing block 203 to move it downward. The convex pressing block 203 squeezes the first spring 204 to further contract. Finally, the bottom circular block of the convex pressing block 203 moves downward to below the locking block 205. At this time, the convex pressing block 203 releases the movement limit of the locking block 205. The locking block 205 and the fixing block 206 as a whole will contract into the T-shaped moving groove 202 under the rebounding force of the second spring 207, so that one end of the locking block 205 completely moves out of the socket hole 106. At this time, the top plate 105 can be easily sleeved outside the socket post 103;

[0042] After the bottom of the top plate 105 contacts the top of the simulated battery, the pressing on the convex pressing block 203 can be released. The convex pressing block 203 will move upward and reset under the elastic force of the first spring 204. The bottom circular block of the convex pressing block 205 squeezes the locking block 205, causing the locking block 205 to move toward the socket hole 106 and squeezing the second spring 207 to contract. Finally, one side of the locking block 205 will be clamped inside the annular locking groove 104. At this time, the connection between the top plate 105 and the socket post 103 is completed, thus realizing the preliminary pressing of the simulated battery.

[0043] Please refer specifically to Figures 1 to 4 , the number of the T-shaped moving groove 202, the locking block 205, the locking block 205, and the second spring 207 matches the number of the socket hole 106 and the socket post 103. The elastic force of the first spring 204 is greater than the sum of the elastic forces of the multiple second springs 207;

[0044] The top edge of the large-diameter circular block at the bottom of the convex pressing block 203 and the bottom edge of one side of the locking block 205 close to the convex pressing block 203 are both arc-shaped structures.

[0045] In this embodiment: Through the structure that the elastic force of the first spring 204 is greater than the sum of the elastic forces of the multiple second springs 207, when the first spring 204 squeezes the convex pressing block 203 to move upward, the convex pressing block 203 can realize the extrusion and movement of the multiple locking blocks 205, so as to realize the synchronous locking of the top plate 105 and the multiple socket posts 103;

[0046] Through the structure of the top edge of the large-diameter circular block at the bottom of the convex pressing block 203 and the arc-shaped bottom edge of the locking block 205, when the convex pressing block 203 and the locking block 205 are squeezed against each other, they can move better under force.

[0047] Please refer specifically to Figures 1 to 4 , the pressing assembly 3 includes a frame body 301, a first hydraulic cylinder 302, a second hydraulic cylinder 303, a middle pressing plate 304, and an annular pressing block 305;

[0048] There are two second hydraulic cylinders 303. The first hydraulic cylinder 302 and the two second hydraulic cylinders 303 are installed on the top of the frame body 301, and the two second hydraulic cylinders 303 are symmetrically distributed with the first hydraulic cylinder 302 as the center;

[0049] The output ends of the first hydraulic cylinder 302 and the second hydraulic cylinder 303 penetrate the top of the frame body 301 and are fixedly connected to the middle pressing plate 304 and the annular pressing block 305 respectively;

[0050] When the first hydraulic cylinder 302 and the middle pressing plate 304 apply an extrusion force to the convex pressing block 203, it is used to unlock the top plate 105 and the socket column 103;

[0051] The second hydraulic cylinder 303 and the annular pressing block 305 apply an extrusion force to the top plate 105 to realize the pressing operation of the top plate 105 on the simulated battery.

[0052] In this embodiment: After the pressing die 1 initially presses the simulated battery, the whole can be transferred to the inside of the frame body 301, aligning the convex pressing block 203 with the middle pressing plate 304. Then, the first hydraulic cylinder 302 and the second hydraulic cylinder 303 can be started in sequence to move the middle pressing block 304 and the annular pressing block 305 downward. The downward movement of the middle pressing block 304 squeezes the convex pressing block 203 to unlock the top plate 105 and the socket column 103. The downward movement of the annular pressing block 305 squeezes the top plate 105, causing the top plate 105 to move further downward to press the simulated battery. When the simulated battery is pressed to the required pressure value, the first hydraulic cylinder 302 can be first moved in the reverse direction to drive the middle pressing block 304 to reset. At this time, the top plate 105 and the socket column 103 are locked to each other. Then, the second hydraulic cylinder 303 is moved in the reverse direction to drive the annular pressing block 305 to reset. At this time, the pressing die 1 can be taken out from the inside of the frame body 301, and the complete pressing operation of the simulated battery is completed.

[0053] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pressing device for testing all-solid-state batteries, comprising a pressing die (1) composed of a bottom plate (101), threaded fixing columns (102), socket columns (103), and a top plate (105). The threaded fixing columns (102) are threadedly connected to the top of the bottom plate (101), the socket columns (103) are fixed to the top of the threaded fixing columns (102), and a plurality of annularly distributed socket holes (106) are formed in the top of the top plate (105). The top plate (105) is sleeved on the outside of the socket columns (103) through the socket holes (106), characterized in that, Inside the top plate (105), a self-locking component (2) is provided, and the self-locking component (2) is used to achieve convenient locking between the top plate (105) and the socket column (103); The top plate (105) applies pressure through a pressure application component (3) to perform a pressing operation on the simulated battery; The self-locking component (2) includes a convex groove (201), a T-shaped moving groove (202), a convex pressing block (203), a first spring (204), and a locking block (205); On the outer side of the socket column (103), a plurality of annular locking grooves (104) are formed and distributed in sequence along the vertical direction; The convex groove (201) is opened in the middle of the interior of the top plate (105) and penetrates to the top of the top plate (105). The T-shaped moving groove (202) is opened in the interior of the top plate (105) and communicates with one side of the convex groove (201). The other side of the T-shaped moving groove (202) communicates with the socket hole (106); The convex pressing block (203) and the first spring (204) are arranged inside the convex groove (201). The first spring (204) is located at the bottom of the convex pressing block (203) and is used to provide a supporting force for the convex pressing block (203). The top of the convex pressing block (203) protrudes from the top of the top plate (105); The locking block (205) is horizontally slidably connected to the inside of the T-shaped moving groove (202). One side of the locking block (205) is in contact with one side of the convex pressing block (203). The other side of the locking block (205) is clamped inside the annular locking groove (104) to achieve relative fixation between the top plate (105) and the socket column (103); The self-locking component (2) further includes a fixing block (206) and a second spring (207); The fixing block (206) is fixed to the bottom of the locking block (205) and is slidably installed inside the T-shaped moving groove (202). The second spring (207) is distributed between one side of the fixing block (206) and one side of the inner wall of the T-shaped moving groove (202) to provide a reset thrust for the locking block (205); The pressure application component (3) includes a frame body (301), a first hydraulic cylinder (302), a second hydraulic cylinder (303), a middle pressing disc (304), and an annular pressing block (305); There are two second hydraulic cylinders (303). The first hydraulic cylinder (302) and the two second hydraulic cylinders (303) are installed on the top of the frame body (301), and the two second hydraulic cylinders (303) are symmetrically distributed with the first hydraulic cylinder (302) as the center; The output ends of the first hydraulic cylinder (302) and the second hydraulic cylinder (303) penetrate the top of the frame body (301) and are respectively fixedly connected to the middle pressing disc (304) and the annular pressing block (305); When the first hydraulic cylinder (302) and the middle pressing disc (304) apply an extrusion force to the convex pressing block (203), it is used to unlock the top plate (105) and the socket column (103); By applying an extrusion force to the top plate (105) through the second hydraulic cylinder (303) and the annular pressing block (305), it is used to perform a pressing operation on the simulated battery by the top plate (105).

2. The pressing device for testing all-solid-state batteries according to claim 1, characterized in that, The number of the T-shaped moving grooves (202), locking blocks (205), and second springs (207) matches the number of the socket holes (106) and socket columns (103), and the elastic force of the first spring (204) is greater than the sum of the elastic forces of the plurality of second springs (207).

3. The pressing device for testing all-solid-state batteries according to claim 1, wherein The top edge of the large-diameter circular block at the bottom of the convex pressing block (203) and the bottom edge of the locking block (205) on the side close to the convex pressing block (203) are both arc-shaped structures.

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