Pressurized in-situ battery monitoring sample table

Abstract

The pressurized in-situ battery monitoring sample table comprises a sample bin assembly and a pressurizing assembly, the sample bin assembly further comprises a sample bin shell, a stainless steel pressurizing column, a sample bin nut, a PEEK sample ring and an insulating ring; the pressurizing assembly comprises a lower insulating plate, a pressure sensor insulating shell, a sample bin fixing seat, an upper compression weak spring, a sample bin pressurizing column, a lower compression weak spring, a spring seat, an upper pressure sensor insulating pad, a pressure sensor, a lower pressure sensor insulating pad, a pressurizing nut cushion block and a pressurizing screw. The device can realize the in-situ monitoring of the structural change of the pressurized primary battery material in the charging and discharging process.

Description

Technical Field

[0001] The utility model relates to the field of in-situ characterization sample stages, and particularly to a pressurized in-situ battery monitoring sample stage. Background Art

[0002] X-ray diffraction technology has become one of the conventional means for characterizing the microstructure of materials. During the charge and discharge process of a primary battery, the crystal structure of the material is changing in real time. Therefore, in-situ structure monitoring of the internal material has become the mainstream demand. Currently, an in-situ battery material structure monitoring sample stage based on X-ray diffraction has been designed. For example, a wide-angle in-situ XRD battery detection device designed with the publication number CN220104910U can perform in-situ monitoring of the material changes in a primary battery at a large range of X-ray incident angles.

[0003] However, with the progress of battery technology and market demands, such as designing impact-resistant and explosion-proof primary batteries or high-voltage primary batteries, it is necessary to understand the material structure changes in a primary battery during charge and discharge under a pressurized state. However, there is currently no in-situ monitoring device on the market that can monitor the material changes in a pressurized primary battery during the charge and discharge process. Summary of the Utility Model

[0004] In view of the deficiencies of the existing in-situ monitoring sample stages for primary batteries, the present utility model is proposed. The present utility model provides a manual pressurization stage in-situ battery monitoring sample stage, which can perform in-situ monitoring of the material changes in a pressurized primary battery during the charge and discharge process. Additionally, based on the manual pressurization stage, by adding an automatic pressurization device, the pressure can be precisely and automatically controlled.

[0005] Therefore, one of the objectives of the present utility model is to provide a manual or automatic pressurization primary battery monitoring sample stage based on X-ray diffraction (hereinafter simply referred to as the manual pressurization stage and the automatic pressurization stage). This device has practical significance in actual applications. After pressurizing the primary battery, it can perform in-situ XRD characterization of the structural changes in the battery material during the charge and discharge process, thereby providing certain guidance for the development of high-voltage batteries or impact-resistant batteries.

[0006] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0007] The manual pressurization stage includes a sample chamber assembly and a pressurization assembly;

[0008] The sample chamber assembly, from top to bottom, is successively the sample chamber upper cover, beryllium window, PEEK sample ring, stainless steel pressure column, upper insulating plate, insulating ring, sample chamber electrode plate, middle insulating plate, and sample chamber locking plate. Among them, the sample chamber upper cover, upper insulating plate, sample chamber electrode plate, middle insulating plate, and sample chamber locking plate are external structures, fixed from top to bottom by long bolts; the beryllium window, PEEK sample ring, insulating ring, and stainless steel pressure column are internal structures; the beryllium window is tightly pressed against the bottom of the sample chamber upper cover by a sample chamber nut, the stainless steel pressure column is located below the beryllium window, and the PEEK sample ring and insulating ring prevent short circuits between the beryllium window and the stainless steel pressure column.

[0009] The pressure application assembly includes a lower insulating plate, upper weak compression spring, sample chamber pressure column, lower weak compression spring, spring seat, upper pressure sensor insulating pad, pressure sensor, lower pressure sensor insulating pad, pressure application nut pad, pressure application screw, pressure sensor insulating shell, and sample chamber fixing seat. Among them, the lower insulating plate and the sample chamber fixing seat are located below the sample chamber assembly, and are fixed to the sample chamber electrode plate, middle insulating plate, and sample chamber locking plate by bolts; the pressure sensor insulating shell is located inside the sample chamber fixing seat; the pressure application part of the pressure application assembly is located inside the device. Starting from the bottom of the stainless steel pressure column, from top to bottom, they are successively the upper weak compression spring, sample chamber pressure column, lower weak compression spring, spring seat, upper pressure sensor insulating pad, pressure sensor, lower pressure sensor insulating pad, pressure application nut pad, and pressure application screw.

[0010] As a preferred scheme of the manual pressure application table described in the present utility model, wherein: between the beryllium window and the stainless steel pressure column is the sample chamber for placing primary battery materials. The beryllium window is the anode and the stainless steel pressure column is the cathode.

[0011] As a preferred scheme of the manual pressure application table described in the present utility model, wherein: seals are provided between the beryllium window, sample chamber nut, sample chamber electrode plate, and lower insulating plate.

[0012] As a preferred scheme of the manual pressure application table described in the present utility model, wherein: the pressure application screw is screwed to the sample chamber fixing seat and has a hollow bolt structure inside. A screw wrench can be used to turn the pressure application screw to push the pressure application assembly to apply pressure to the sample chamber.

[0013] As a preferred scheme of the manual pressure application table described in the present utility model, wherein: when the screw wrench turns the pressure application screw to move it upward, the pressure is transmitted from bottom to top through the pressure application nut pad, lower pressure sensor insulating pad, pressure sensor, upper pressure sensor insulating pad, sample chamber pressure column, and stainless steel pressure column to the internal battery materials.

[0014] As a preferred scheme of the manual pressure application table described in the present utility model, wherein: the pressure sensor can accurately record the pressure generated after manual pressure application.

[0015] The automatic pressure - adding table adds an automatic pressure - adding component on the basis of the manual pressure - adding table;

[0016] The automatic pressure - adding component is located below the pressure - adding screw and includes a rotation - stopping pin, a pressing plate, a rotation - stopping disc, a fixing plate for the automatic pressure - adding module, a transmission shaft, a speed reducer, a coupling, a motor fixing bracket, a decelerating stepping motor, and an automatic pressure - adding module box; wherein, the transmission shaft is screwed with the pressure - adding screw and can drive the pressure - adding screw to rotate when rotating, so as to move upward for pressing; the speed reducer is located below the transmission shaft and is linked with the decelerating stepping motor through a coupling at the side, changing the horizontal rotation of the motor into the vertical rotation of the transmission shaft; the rotation - stopping disc and the rotation - stopping pin are located above the speed reducer to control the rotation of the transmission shaft; the fixing plate for the automatic pressure - adding module and the automatic pressure - adding module box form the external framework of the automatic pressure - adding component; the pressing plate can fix the rotation - stopping disc; the motor fixing bracket can fix the decelerating stepping motor.

[0017] As a preferred scheme of the automatic pressure - adding table of the present utility model, wherein: the motor is connected to a pressure sensor through a wire; when a certain pressure is set, the automatic control and maintenance of the pressure are realized through the linkage between the pressure sensor and the motor.

[0018] Compared with the existing technology, the beneficial effects of the present utility model include: this device can realize the in - situ monitoring of the structural changes during the charge - discharge process of the primary battery material after pressing. Description of the Drawings

[0019] Figure 1 A schematic structural view of a manual pressure - adding table provided by an embodiment of the present utility model;

[0020] Figure 2 A schematic structural view of a manual pressure - adding table observed from another angle provided by an embodiment of the present utility model;

[0021] Figure 3 A schematic sectional view of a manual pressure - adding table provided by an embodiment of the present utility model;

[0022] Figure 4 A schematic structural view of an automatic pressure - adding table provided by an embodiment of the present utility model;

[0023] Figure 5 A schematic structural view of an automatic pressure - adding table observed from another angle provided by an embodiment of the present utility model;

[0024] Figure 6 A schematic sectional view of an automatic pressure - adding table provided by an embodiment of the present utility model.

[0025] Figures 1-6Chinese: 1 Upper cover of sample chamber, 2 Beryllium window, 3 Upper insulating plate, 4 Electrode plate of sample chamber, 5 Middle insulating plate, 6 Locking plate of sample chamber, 7 Lower insulating plate, 8 Insulating shell of pressure sensor, 9 Fixing seat of sample chamber, 10 Stainless steel pressure column, 11 Nut of sample chamber, 12 PEEK sample ring, 13 Insulating ring, 14 Upper weak compression spring, 15 Pressure column of sample chamber, 16 Lower weak compression spring, 17 Spring seat, 18 Upper insulating pad of pressure sensor, 19 Pressure sensor, 20 Lower insulating pad of pressure sensor, 21 Pressure nut pad, 22 Pressure screw, 23 Transmission shaft, 24 Reducer, 25 Coupling, 26 Stepping motor with reducer, 27 Anti-rotation pin, 28 Anti-rotation plate, 29 Pressure plate, 30 Motor fixing bracket, 31 Fixing plate of automatic pressure module, 32 Automatic pressure module box. Detailed implementation manners

[0026] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Those skilled in the art may make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0028] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the implementation manners of the present utility model, for the convenience of explanation, the sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0029] To make the purpose, technical solutions and advantages of the present utility model clearer, the following will further describe the implementation manners of the present utility model in detail in conjunction with the accompanying drawings.

[0030] The embodiments of the present utility model provide the following technical solutions: A manual pressure application table. During use, this device can utilize X-ray diffraction to perform in-situ structure monitoring during the charge and discharge processes of the pressurized primary battery materials, which has practical guiding significance for the development of high-voltage primary batteries or anti-impact primary batteries. Currently, on the market, only the in-situ monitoring of the structure of primary battery materials under normal pressure can be carried out, and the present utility model broadens the structural research of primary batteries under pressure.

[0031] Figures 1-3 The structural schematic diagram of the manual pressure application in-situ battery monitoring sample table provided by the embodiments of the present utility model is shown. The manual pressure application in-situ battery monitoring sample table includes a sample chamber assembly and a pressure application assembly.

[0032] The sample chamber assembly further includes a sample chamber upper cover 1, a beryllium window 2, an upper insulating plate 3, a sample chamber electrode plate 4, a middle insulating plate 5, a sample chamber locking plate 6, a stainless steel pressure column 10, a sample chamber nut 11, a PEEK sample ring 12, and an insulating ring 13; the pressurizing assembly includes a lower insulating plate 7, a pressure sensor insulating shell 8, a sample chamber fixing seat 9, an upper weak compression spring 14, a sample chamber pressure column 15, a lower weak compression spring 16, a spring seat 17, an upper pressure sensor insulating pad 18, a pressure sensor 19, a lower pressure sensor insulating pad 20, a pressurizing nut spacer 21, and a pressurizing screw 22. As Figures 1-3 shown, the manual pressurizing in-situ battery monitoring sample stage provided by the embodiment of the present invention is bounded by the lower insulating plate 7, with the sample chamber assembly above the lower insulating plate 7 and the pressurizing assembly below the lower insulating plate 7; the two assemblies are fixed together by internal screws passing through the lower insulating plate 7.

[0033] As Figures 1-3 shown, the sample chamber assembly includes a sample chamber housing, and the sample chamber housing sequentially includes a sample chamber upper cover 1, an upper insulating plate 3, a sample chamber electrode plate 4, a middle insulating plate 5, and a sample chamber locking plate 6 from top to bottom. The above components are connected and fixed by long screws from top to bottom; the sample chamber upper cover 1 is a circular cover structure with a round hole in the center, and a beryllium window is installed at the round hole; the sample chamber nut 11 is screwed with the sample chamber upper cover 1 to tightly fix the beryllium window 2 to the bottom of the sample chamber upper cover 1; the stainless steel pressure column 10 is located below the beryllium window 2 with a certain gap left for placing battery material samples; the PEEK sample ring 12 and the upper insulating ring 13 are installed between the beryllium window 2 and the stainless steel pressure column 10 to prevent the anode and cathode from contacting; in addition, the beryllium window 2 and the stainless steel pressure column 10 are connected to an external power supply through wires.

[0034] Combined with Figures 1-3 describing the external structure of the pressurizing assembly, the lower insulating plate 7 and the sample chamber fixing seat 9 are connected and fixed to the upper sample chamber housing by a set of long screws; the internal structure of the pressurizing assembly is described as follows. Below the stainless steel pressure column 10, the sample chamber pressure column 15, the upper pressure sensor insulating pad 18, the pressure sensor 19, the lower pressure sensor insulating pad 20, the pressurizing nut spacer 21, and the pressurizing screw 22 are arranged in sequence from top to bottom; the pressurizing screw 22 is screwed with the sample chamber fixing seat 9 through a bolt, and the internal is a bolt structure, and it can be moved up and down by using a screw wrench to turn it; the outside of the sample chamber pressure column 15 is wrapped with an upper weak compression spring 14, and the outside of the upper pressure sensor insulating pad 18 is wrapped with a lower weak compression spring 16 and a spring seat 17, and the spring provides a springback performance; the outside of the pressure sensor 19 is wrapped with a pressure sensor insulating shell 8 to provide a protection function.

[0035] Combined with Figures 1-3 , the working principle of the manual pressurizing stage provided by the embodiment of the present invention is as follows:

[0036] (1) Inside the vacuum glove box, remove the long bolt at the upper part, take off the upper cover 1 of the sample chamber and the beryllium window 2, and place an appropriate amount of battery material on the platform above the stainless-steel pressure column 10.

[0037] (2) Install the beryllium window 2 and the upper cover 1 of the sample chamber, tighten them with the long bolt, and take out the sample stage from the vacuum glove box.

[0038] (3) Use a screwdriver wrench to turn the pressure screw 22 to make it move upward, so as to press the battery material between the stainless-steel pressure column 10 and the beryllium window 2. Read the corresponding pressure through the pressure sensor 19 and adjust it to the expected pressure value.

[0039] (4) Place the sample pressure stage at the X-ray sample stage, turn on the external power supply connecting the beryllium window 2 and the stainless-steel pressure column 10 to make the primary battery start working, and at the same time use X-rays to in-situ monitor the structural changes of the internal battery material through the beryllium window 2.

[0040] Figures 4-6 The structural schematic diagram of the automatic pressure application in-situ battery monitoring sample stage provided by the embodiment of the present utility model is shown. From top to bottom, it is successively a sample chamber assembly, a pressure application assembly, and an automatic pressure application assembly; among them, the sample chamber assembly and the pressure application assembly are the same as those of the manual pressure stage.

[0041] The automatic pressure application assembly includes a transmission shaft 23, a reduction gearbox 24, a coupling 25, a reduction stepping motor 26, a rotation stop pin 27, a rotation stop plate 28, a pressing plate 29, a motor fixing bracket 30, an automatic pressure application module fixing plate 31, and an automatic pressure application module box 32.

[0042] As Figures 4-6 shown, the automatic pressure application assembly is located below the sample chamber fixing seat 9 and is fixedly connected to the sample chamber fixing seat 9 through the rotation stop plate 28; the transmission shaft 23 is screwed to the pressure screw 22, and the rotation of the transmission shaft 23 can drive the upward translation of the pressure screw 22, so as to achieve pressure application; the rotation stop pin 27 passes through the rotation stop plate 28 and the pressing plate 29 and is fixed on the automatic pressure application module fixing plate 31 to block the rotation stop plate 28 to prevent linkage; the transmission shaft 23 is screwed to the reduction gearbox 24, and the side of the reduction gearbox 24 is connected to the reduction stepping motor 26 through the coupling 25; the rotation of the reduction stepping motor 26 in the horizontal direction can be converted into the rotation of the transmission shaft 23 in the vertical direction through the reduction gearbox 24; the automatic pressure application module fixing plate 31 and the automatic pressure application module box 32 provide an external fixing frame for the entire automatic pressure application assembly, the reduction stepping motor 26 is fixed on the frame through the motor fixing bracket 30, and the pressing plate 29 fixes the rotation stop plate 28 on the frame.

[0043] Combined with Figures 4-6 , the working principle of the automatic pressure application in-situ battery monitoring sample stage provided by the embodiment of the present utility model is as follows:

[0044] The decelerating stepper motor 26 is connected to the pressure sensor 19 through a wire. After setting a pressure, the decelerating stepper motor 26 and the pressure sensor 19 control the pressure at the set pressure through linkage, thereby realizing the automatic control and maintenance of the battery pressure; the sample loading method and the test method are the same as those of the manual pressure applying table.

[0045] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present utility model can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pressurized in-situ battery monitoring sample station, characterized in that: The pressurized in-situ battery monitoring sample station includes a sample chamber component and a pressurizing component; The sample chamber assembly further comprises a sample chamber housing, a stainless steel pressurizing column (10), a sample chamber nut (11), a PEEK sample ring (12), and an insulating ring (13); the pressurizing component comprises a lower insulating plate (7), a pressure sensor insulating shell (8), a sample chamber fixing seat (9), an upper compression weak spring (14), a sample chamber pressurizing column (15), a lower compression weak spring (16), a spring seat (17), an upper pressure sensor insulating pad (18), a pressure sensor (19), a lower pressure sensor insulating pad (20), a pressurizing nut spacer (21), and a pressurizing screw (22).

2. The pressurized in-situ battery monitoring sample stand according to claim 1, characterized in that: The pressurized in-situ battery monitoring sample stage has a lower insulating plate (7) as its boundary, a sample chamber component is located above the lower insulating plate (7), and a pressurizing component is located below the lower insulating plate (7); the two components are fixed together by internal screws that penetrate the lower insulating plate (7).

3. The pressurized in-situ battery monitoring sample stand according to claim 2, characterized in that: The sample chamber housing comprises, from top to bottom, a sample chamber upper cover (1), an upper insulating plate (3), a sample chamber electrode plate (4), a middle insulating plate (5) and a sample chamber locking plate (6), and the above components are connected and fixed by long screws from top to bottom.

4. The pressurized in-situ battery monitoring sample stand according to claim 3, characterized in that: The sample chamber upper cover (1) is a circular cover structure with a circular hole in the center, and a beryllium window is installed at the circular hole; the sample chamber nut (11) is screwed to the sample chamber upper cover (1), and the beryllium window (2) is tightly fixed to the bottom of the sample chamber upper cover (1); the stainless steel pressure column (10) is located at the lower part of the beryllium window (2), and a certain gap is left for placing battery material samples; the PEEK sample ring (12) and the upper insulating ring (13) are installed between the beryllium window (2) and the stainless steel pressure column (10) to prevent the positive and negative electrodes from contacting; the beryllium window (2) and the stainless steel pressure column (10) are connected to an external power supply through a wire.

5. The pressurized in-situ battery monitoring sample stand according to claim 4, characterized in that: The lower insulating plate (7) and the sample chamber fixing seat (9) are connected and fixed to the upper sample chamber shell via a set of long screws.

6. The pressurized in-situ battery monitoring sample stand according to claim 5, characterized in that: Under the stainless steel pressure column (10), the sample chamber pressure column (15), the upper pressure sensor insulation pad (18), the pressure sensor (19), the lower pressure sensor insulation pad (20), the pressure nut spacer (21), and the pressure screw (22) are arranged in sequence from top to bottom; the pressure screw (22) is screwed to the sample chamber fixing seat (9) through bolts; the sample chamber pressure column (15) is wrapped with an upper compression weak spring (14), and the upper pressure sensor insulation pad (18) is wrapped with a lower compression weak spring (16) and a spring seat (17), and the spring provides rebound performance; the pressure sensor (19) is wrapped with a pressure sensor insulation shell (8).

7. The pressurized in-situ battery monitoring sample stand according to claim 6, characterized in that: The pressurized in-situ battery monitoring sample table also includes an automatic pressurizing component; wherein the automatic pressurizing component includes a transmission shaft (23), a reducer (24), a coupling (25), a reduction stepping motor (26), a stop pin (27), a stop disk (28), a pressure plate (29), a motor fixing bracket (30), an automatic pressurizing module fixing plate (31), and an automatic pressurizing module box (32).

8. The pressurized in-situ battery monitoring sample stand according to claim 7, characterized in that: The automatic pressurizing assembly is located below the sample chamber fixing seat (9) and is fixedly connected to the sample chamber fixing seat (9) via a stop plate (28); the transmission shaft (23) is threadedly connected to the pressurizing screw (22), and the rotation of the transmission shaft (23) can drive the pressurizing screw (22) to move upward to achieve pressurization; the stop pin (27) passes through the stop plate (28) and the pressure plate (29) and is fixed on the automatic pressurizing module fixing plate (31), and the stop plate (28) is clamped to prevent linkage; the transmission shaft (23) is threadedly connected to the reducer (24), and the reducer (24) The side is connected to the reduction stepper motor (26) through a coupling (25); the rotation of the reduction stepper motor (26) in the horizontal direction is converted into the rotation of the transmission shaft (23) in the vertical direction through the reducer (24); the automatic pressurizing module fixing plate (31) and the automatic pressurizing module box (32) provide an external fixing frame for the entire automatic pressurizing component, the reduction stepper motor (26) is fixed to the frame through the motor fixing bracket (30), and the pressure plate (29) fixes the anti-rotation disk (28) to the frame.

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