An automated prelithiation device

Abstract

The present invention discloses an automated prelithiation device. The fixed disassembly and assembly unit includes a bottom plate. Installation frames are fixedly connected to the outer peripheries of the four sides of the bottom plate. Hydraulic cylinders are installed on the two opposite crossbeams at the top of the installation frames. A plurality of clamping units are provided at the upper end of the bottom plate. A cover plate is fixedly connected to the top of the clamping unit. The lower end of the hydraulic cylinder corresponds to the cover plate. A plurality of the clamping units each include an upper clamping plate and a lower clamping plate. A closed space is formed between the upper clamping plate and the lower clamping plate. The communication unit includes a plurality of communication plugs. One ends of the plurality of communication plugs are communicated with the inner cavity of the upper clamping plate. A plurality of liquid injection pipes are provided and are all communicated with the inner cavity. The whole set of processes in this application does not require manual operation, realizes the prelithiation link of the battery cell in a constant temperature and vacuum environment, increases the capacity and service life of the battery, realizes the automation and mass production of the prelithiation of the battery cell, and greatly improves the practicability of the present invention.

Description

Technical Field

[0001] The present invention relates to the production of battery cells, and specifically to an automated pre-lithium device. Background Art

[0002] With the development of lithium-ion battery technology, more and more lithium batteries are used in people's lives. However, when a lithium battery is in use, lithium ions at the positive electrode enter the negative electrode through the electrolyte and the separator to generate electrical energy. During charging, the original lithium ions that passed through cannot completely return to the positive electrode due to the formation of the SEI film at the negative electrode. Therefore, lithium ions at the positive electrode are continuously lost during the charge and discharge process, reducing the service life of the battery cell. In order to increase the capacitance of the battery cell and extend its service life, during the production process of the battery cell, the negative electrode of the battery cell is pre-lithiated in advance. After the SEI film is formed on the negative electrode, it is assembled with the positive electrode to prevent the loss of lithium ions at the positive electrode during lithiation, and significantly improve the first efficiency and capacity of the full battery. This technology is called battery pre-lithiation. However, most of the current pre-lithium devices on the market use manual operation by personnel beside, with low work efficiency, complex processes, and high production costs.

[0003] Chinese patent document with the publication number CN113725491A discloses a method and device for pre-lithiating lithium-ion battery cells without lithiation. This patent simplifies the manufacturing process of pre-lithiated battery cells and can directly perform grading in the device, reducing production costs. However, this patent places the battery cell fixed with a pre-lithium film in a vacuum chamber filled with electrolyte, resulting in a relatively long exposure time of the battery cell to the air, which easily affects the use effect of the battery cell. Moreover, this patent requires manual operation by staff beside and cannot achieve automation, with low work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to achieve the automation of battery cell pre-lithiation.

[0005] To solve the above technical problem, the present invention provides the following technical solution: an automated pre-lithium device, including a fixed disassembly and assembly unit, a communication unit, and a liquid injection pipe. The fixed disassembly and assembly unit includes a bottom plate and a mounting frame fixed on the bottom plate. A hydraulic cylinder is installed at the top of the mounting frame. A plurality of clamping units are provided at the upper end of the bottom plate. The lower end of the telescopic rod of the hydraulic cylinder is aligned with the cover plate. Each of the plurality of clamping units includes an upper clamping plate and a lower clamping plate. A closed space is formed between the upper clamping plate and the lower clamping plate. The upper end of the uppermost upper clamping plate is clamped with the cover plate. The communication unit includes a plurality of communication plugs. One end of each of the plurality of communication plugs is communicated with the inner cavity of the upper clamping plate. A plurality of liquid injection pipes are provided, and one end of each of the plurality of liquid injection pipes is communicated with the inner cavity of the lower clamping plate.

[0006] In this application, the battery cell is placed into the inner cavity of the lower clamping plate, and then the lithium sheet is placed into the inner cavity of the upper clamping plate. The hydraulic cylinder is started to apply pressure to the cover plate. Under the action of the pressure, the upper clamping plate and the lower clamping plate are combined and sealed, so that the lithium sheet is in contact with the battery cell. Then, by squeezing the communication plug, a communication environment is formed in the communication unit to discharge air, making the inner cavity of the clamping unit a vacuum. Then, the electrolyte is injected into the inner cavity of the clamping unit through the liquid injection pipe, and the battery cell is soaked in a vacuum environment, thus successfully pre-lithiating the battery cell and realizing the automation of battery cell pre-lithiation.

[0007] Preferably, the fixed disassembly unit includes a support plate. Limiting grooves are provided at the edge positions of the front and rear ends of the support plate. Support feet are fixedly connected to the peripheries of the lower end of the support plate. The support plate is connected to the bottom plate through the support feet, and multiple clamping units are placed on the upper end of the support plate.

[0008] Preferably, the fixed disassembly unit includes a support plate. Limiting grooves are provided at the edge positions of the front and rear ends of the support plate. Support feet are fixedly connected to the peripheries of the lower end of the support plate. The support plate is connected to the bottom plate through the support feet, and multiple clamping units are placed on the upper end of the support plate.

[0009] Preferably, the mounting frame is provided with 6 columns, and cylinders are fixedly installed on the outer sides of each column. The output ends of multiple cylinders correspond to the positions of the limiting grooves.

[0010] A connecting block is fixedly installed at the middle position of the left side wall of the support plate. A fixing plate is fixedly installed at the position corresponding to the connecting block at the left edge of the bottom plate. One end of the fixing plate is screwed to the bottom plate, and the other end is clamped to the mounting block through a pin shaft.

[0011] A number of connecting plates are provided on the upper end of the support plate, corresponding to the positions of the limiting grooves, and the open ends of the connecting plates all face outward.

[0012] Advantages: While ensuring the stability of the clamping unit, it is convenient to remove after pre-lithiation is completed.

[0013] Preferably, limiting posts are provided at the positions corresponding to the connecting plates on the upper end of the support plate. Limiting blocks are connected to the upper ends of the limiting posts. Multiple limiting blocks are clamped to the cover plate. The lower ends of the limiting posts are clamped to the open ends of the connecting plates through pin shafts, and the ends of the limiting posts are clamped in the inner cavities of the limiting grooves.

[0014] Preferably, through holes are provided at the edge positions of the left and right ends of the cover plate. Quick-installation handles are provided in the inner cavities of the through holes. The lower ends of the quick-installation handles penetrate through the cover plate and extend to the lower end to be clamped to the uppermost upper clamping plate.

[0015] A plurality of first mounting grooves are formed at the lower end of the upper clamping plate. Stopper blocks are fixedly connected to both sides of each first mounting groove, and pressing plates are fixedly connected to the inner cavities of the first mounting grooves through bolts.

[0016] Advantages: While ensuring the stability of the clamping unit, it is convenient to remove after pre-lithiation is completed.

[0017] Preferably: Second mounting grooves are formed at positions corresponding to the first mounting grooves at the upper end of the lower clamping plate, and pocket plates are fixedly installed in the inner cavities of the second mounting grooves through bolts;

[0018] Wedge-shaped blocks are fixedly connected to both sides of each first mounting groove and second mounting groove at the lower end of the upper clamping plate.

[0019] Advantages: It is convenient to install the battery cell, and the lithium sheet is brought into contact with the battery cell by extrusion.

[0020] Preferably: Connecting holes are formed on the outer sides of both ends of the upper clamping plate and the lower clamping plate, and the inner diameters of the connecting holes correspond to those of the communication unit and the liquid injection pipe respectively.

[0021] Advantages: It is convenient for vacuum pumping and liquid injection.

[0022] Preferably: Aviation plugs are provided at both outer ends of a plurality of the upper clamping plates, and observation ports are installed on one side away from each other of every two aviation plugs.

[0023] Advantages: Keep the inner cavity of the clamping unit at a constant temperature, and it is convenient for the staff to observe the electrolyte in the inner cavity of the clamping unit.

[0024] Preferably: The communication unit includes a plurality of conduits. A through pipe is communicated with the middle position of the outer side of each conduit, and one end of the communication plug is fixedly installed in the inner cavity of the through pipe.

[0025] Preferably: A "V-shaped" port is provided at the lower end of the inner cavity of each conduit, and steel balls are provided at the upper ends of the ports;

[0026] A spring is installed in the inner cavity of each conduit, and the upper and lower ends of the spring are in contact with the steel balls.

[0027] Advantages: Ensure the sealing of the inner cavity, and at the same time ensure the up and down connectivity of the inner cavity.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: By placing the battery cell into the inner cavity of the lower clamping plate and then placing the lithium sheet into the inner cavity of the upper clamping plate, the hydraulic cylinder is started to apply pressure to the cover plate. Under the action of the pressure, the upper clamping plate and the lower clamping plate are combined and sealed. Then, by squeezing the communication plug, the communication unit forms a communication environment to discharge air, making the inner cavity of the clamping unit a vacuum. Then, the electrolyte is injected into the inner cavity of the clamping unit through the liquid injection pipe, and the battery cell is immersed in the vacuum environment, so that the prelithiation of the battery cell is successful. The whole set of processes does not require manual operation, realizing the prelithiation link of the battery cell in a constant temperature and vacuum environment, increasing the capacity and service life of the battery, and realizing the automation and mass production of the prelithiation of the battery cell;

[0029] By arranging a fixed disassembly and assembly unit on the outside of the clamping unit, it is convenient for installation and disassembly, greatly improving the practicability of the present application. Brief Description of the Drawings

[0030] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an automated prelithiation device according to an embodiment of the present invention;

[0031] Figure 2 It is a three-dimensional schematic diagram of the structure of the fixed disassembly and assembly unit of an automated prelithiation device according to an embodiment of the present invention;

[0032] Figure 3 It is a three-dimensional schematic diagram of the cover plate structure of an automated prelithiation device according to an embodiment of the present invention;

[0033] Figure 4 It is a three-dimensional schematic diagram of the upper clamping plate structure of an automated prelithiation device according to an embodiment of the present invention

[0034] Figure 5 It is a three-dimensional schematic diagram of the lower clamping plate structure of an automated prelithiation device according to an embodiment of the present invention

[0035] Figure 6 It is a front view structural schematic diagram of the communication unit structure of an automated prelithiation device according to an embodiment of the present invention;

[0036] Figure 7 It is a front view sectional structural schematic diagram of the communication unit of an automated prelithiation device according to an embodiment of the present invention.

[0037] In the figure: 1 - Fixed disassembly and assembly unit; 11 - Bottom plate; 12 - Mounting frame; 13 - Support plate; 131 - Limiting groove; 132 - Support leg; 133 - Connecting plate; 134 - Connecting block; 14 - Cylinder; 15 - Hydraulic cylinder; 16 - Limiting plate; 17 - Fixed plate; 18 - Limiting column; 19 - Limiting block; 2 - Cover plate; 21 - Through hole; 22 - Fixed groove; 3 - Quick installation handle; 4 - Clamping unit; 41 - Upper clamping plate; 411 - Slot; 42 - Wedge block; 43 - First installation groove; 431 - Stop block; 432 - Pressure plate; 44 - Aviation plug; 45 - Observation port; 46 - Lower clamping plate; 47 - Second installation groove; 471 - Pocket plate; 48 - Connecting hole; 5 - Connecting unit; 51 - Conduit; 511 - Port; 52 - Connecting pipe; 53 - Connecting plug; 54 - Spring; 55 - Steel ball; 6 - Liquid injection pipe. Detailed implementation manner

[0038] To facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings of the specification.

[0039] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0040] Refer to Figure 1 , this embodiment discloses an automatic prelithiation device, including a fixed disassembly and assembly unit 1, a cover plate 2, a quick installation handle 3, a clamping unit 4, a connecting unit 5, and a liquid injection pipe 6.

[0041] At the same time, refer to Figure 1-2 , the fixed disassembly and assembly unit 1 includes a bottom plate 11, a mounting frame 12, a support plate 13, a cylinder 14, a hydraulic cylinder 15, a limiting plate 16, a fixed plate 17, a limiting column 18, and a limiting block 19. The bottom plate 11 is of a "rectangular" structure as a whole and is in contact with the ground. The mounting frame 12 is welded around the bottom plate 11 to form a steel structure frame.

[0042] In this embodiment, the mounting frame 12 is provided with 6 columns and a rectangular frame formed by connecting the heads and tails of 4 crossbeams fixed at the tops of the columns.

[0043] The support plate 13 is located at the upper end of the bottom plate 11. The support plate 13 includes a limiting groove 131, support legs 132, connecting plates 133, and connecting blocks 134. There are 6 limiting grooves, which are equidistantly distributed at the front and rear edge positions of the support plate 13.

[0044] There are four supporting feet 132, which are all fixedly installed around the lower end of the support plate 13. The support plate 13 is placed on the upper end of the bottom plate 11 through the supporting feet 132, improving the stability of the support plate 13.

[0045] There are four connecting plates 133, all of which are "L-shaped" structures and are respectively fixedly installed corresponding to four of the limiting grooves 131 at the upper end of the support plate 13.

[0046] In this embodiment, the open ends of the connecting plates 133 all face outward.

[0047] The connecting block 134 is fixedly installed at the middle position of the outer wall of the left end of the support plate 13.

[0048] There are six cylinders 14, all of which are fixedly installed at the lower ends of the columns of the mounting frame 12, and the output ends of the cylinders 14 correspond to the positions of the limiting grooves 131 one by one.

[0049] There are two hydraulic cylinders 15, which are respectively welded on two opposite cross beams at the upper end of the mounting frame 12.

[0050] There are two groups of limiting plates 16, both of which are "concave-shaped" structures. One group of limiting plates 16 is screwed to the left edge position of the support plate 13 through bolts, and the other group of limiting plates 16 is screwed to the rear edge position of the support plate 13 through bolts.

[0051] The fixing plate 17 is welded to the left edge position of the bottom plate 11. The fixing plate 17 is set as an "L-shaped" structure. The horizontal end of the fixing plate 17 is fixedly connected to the upper end of the bottom plate 11, and the vertical end of the fixing plate 17 is clamped with the connecting block 134 through a pin shaft, so that the support plate 13 is fixedly installed on the upper end of the bottom plate 11, ensuring the stability of the support plate 13.

[0052] There are four limiting columns 18, the whole of which is an "L-shaped" structure, corresponding to the connecting plates 133 one by one. The end of the limiting column 18 is clamped in the inner cavity of the limiting groove 131. The inner side of the vertical end of the limiting column 18 is clamped with the open end of the connecting plate 133 through a pin shaft, and the horizontal end at the top of the limiting column 18 is clamped with the limiting block 19 through a pin shaft.

[0053] In this embodiment, the output ends of multiple cylinders 14 correspond to the outside of the limiting columns 18.

[0054] At the same time, refer to Figure 1-3 , the cover plate 2 is a "rectangular" structure as a whole. There is a certain gap between the upper surface of the cover plate 2 and the output end of the hydraulic cylinder 15. The cover plate 2 includes a through hole 21 and a fixing groove 22. The through hole 21 is arranged at the left and right ends of the cover plate 2, and the lower end of the quick-release handle 3 extends to the outside through the through hole 21.

[0055] In this embodiment, the output end of the hydraulic cylinder 15 corresponds to the upper end of the cover plate 2.

[0056] The fixing grooves 22 are opened at the front and rear edge ends of the cover plate 2, with 6 provided, corresponding to the positions of the limiting grooves 131 one by one.

[0057] In this embodiment, the front ends of multiple limiting blocks 19 are all clamped in the inner cavity of the fixing groove 22.

[0058] Referring to FIGS. 1-2 and 4-5 simultaneously, multiple clamping units 4 are provided, all placed at the upper end of the support plate 13. The clamping unit 4 includes several upper clamping plates 41. The upper clamping plates 41 are integrally in a "rectangular" structure. Slots 411 matching the quick-release handles 3 are opened at the left and right ends of the outer upper sides of multiple upper clamping plates 41.

[0059] In this embodiment, the cover plate 2 is clamped with the uppermost upper clamping plate 41 through the quick-release handle 3, effectively ensuring the stability of the cover plate 2.

[0060] In this embodiment, the cover plate 2 is placed on the uppermost layer of the clamping unit 4. The quick-release handle 3 passes through the through hole 21 and extends to the lower end to be clamped with the uppermost upper clamping plate 41, thereby preventing the cover plate 2 from shifting. The inner sides of multiple limiting plates 16 are all in contact with the outer sides of the clamping unit 4, thereby limiting the overall position of the clamping unit 4. After assembling multiple clamping units 4, the cylinders 14 corresponding to the limiting columns 18 one by one are started to abut against them, so that the limiting blocks 19 clamped at the upper ends of the limiting columns 18 are clamped into the inner cavity of the fixing groove 22. Then, the limiting columns 18 are clamped with the connecting plate 133 through pins, further providing the stability of the support plate 13, the cover plate 2 and multiple clamping units 4. Then, the output ends of the remaining cylinders 14 are inserted into the inner cavity of the limiting grooves 131, and the hydraulic cylinder 15 is started to apply pressure to the cover plate 2, thereby squeezing the clamping unit 4. After the processing is completed, first contract the output end of the hydraulic cylinder 15, and at the same time contract the output ends of the 6 cylinders 14. Then, take out the pin between the fixing plate 17 and the connecting block 134, and the support plate 13 together with multiple clamping units 4 can be transported to the designated position. After reaching the destination, take out the pin between the limiting column 18 and the limiting block 19, then take out the pin between the connecting plate 133 and the lower end of the limiting column 18, and at the same time take out the quick-release handle 3 and remove the cover plate 2, and then the clamping unit 4 can be replaced. The overall operation is simple and convenient, which can be fixed quickly and disassembled quickly, with high work efficiency and strong practicability.

[0061] The clamping unit 4 further includes a wedge-shaped block 42, a first installation groove 43, a navigation plug 44, a viewing port 45, a lower clamping plate 46, a second installation groove 47, and a connection hole 48. A plurality of first installation grooves 43 are provided at the lower end of the upper clamping plate 41. Both sides of the inside of the first installation groove 43 are fixedly connected with stoppers 431. A pressing plate 432 is fixedly connected to the middle position of the first installation groove 43 through bolts. The lithium sheet is fixed in the inner cavity of the upper clamping plate 41 through the stoppers 431 and the pressing plate 432.

[0062] There are multiple sets of aviation plugs 44, each set is installed at the left and right ends of the outer side of the upper clamping plate 41 and is connected to an external power supply, ensuring the constant temperature inside the clamping unit 4.

[0063] In this embodiment, the aviation plugs 44 are only arranged on the outer side of one side of the upper clamping plate 41.

[0064] There are multiple sets of observation ports 45, each set is arranged at the left and right ends of the outer side of the upper clamping plate 41, and is located on the side away from each other of the two aviation plugs 44.

[0065] In this embodiment, the observation ports 45 are made of transparent glass of organic material, which is convenient for the staff to observe the inside of the clamping unit 4 in real time.

[0066] The lower clamping plate 46 is a "rectangular" structure matching the upper clamping plate 41. The upper end of the lower clamping plate 46 is clamped with the lower end of the upper clamping plate 41 to form a closed cavity. At the positions corresponding to the first installation grooves 43 on the upper end of the lower clamping plate 46, second installation grooves 47 are provided. A retaining plate 471 is fixedly connected to the inner cavity of the second installation groove 47 through bolts, and the battery cells are placed on the upper end of the retaining plate 471.

[0067] The wedge-shaped blocks 42 are fixedly installed at the lower end of the upper clamping plate 41 and are located on both sides of each first installation groove 43 and second installation groove 47. When the wedge-shaped blocks 42 are squeezed, the lithium sheets are brought into contact with the battery cells.

[0068] In this embodiment, connection holes 48 are provided on the outer sides of both ends of the upper clamping plate 41 and the lower clamping plate 46.

[0069] Referring to FIGS. 1, 6-7 simultaneously, there are two communication units 5, which are respectively installed on the outer sides of both ends of the upper clamping plate 41. The communication unit 5 includes a conduit 51, a through pipe 52, a communication plug 53, a spring 54, and a steel ball 55. There are multiple sections of the conduit 51. At the lower end of the inner cavity of each section of the conduit 51, a "V-shaped" port 511 is provided, and a through pipe 52 is communicated with the middle position of the outer side of each section of the conduit 51.

[0070] One end of the communication plug 53 is fixedly installed in the inner cavity of the through pipe 52, and the other end extends to the outside.

[0071] In this embodiment, the part of the communication plug 53 extending out of the inner cavity of the through pipe 52 enters the inner cavity of the upper clamping plate 41 through the connection hole 48 and is communicated with it.

[0072] A spring 54 is provided in the inner cavity of each section of the conduit 51, and the length of the spring 54 corresponds to the length of each section of the conduit 51.

[0073] The steel balls 55 are located in the inner cavity of the conduit 51 and are stuck at the upper end of the port 511.

[0074] In this embodiment, both the upper and lower ends of the spring 54 are in contact with the steel balls 55.

[0075] Refer to Figure 1 , there are several liquid injection tubes 6, which are respectively installed at the outer ends of multiple lower clamping plates 46. The pipelines of the liquid injection tubes 6 are all connected to the inner cavity of the lower clamping plate 46 through the connection holes 48.

[0076] In this embodiment, multiple liquid injection tubes 6 are installed in a'stair-step' staggered manner, which is convenient for one-time liquid injection and improves work efficiency.

[0077] In this embodiment, when the hydraulic cylinder 15 applies pressure to the cover plate 2, the clamping unit 4 as a whole is squeezed. During this process, the air in the inner cavity of the clamping unit 4 enters the inner cavity of the conduit 51 through the communication plug 53. The pressure received in the inner cavity of the conduit 51 causes the spring 54 to contract, and then the steel ball 55 is ejected from the port 511, forming an upper and lower connected environment. Then, the inner cavity of the clamping unit 4 is evacuated through the communication unit 5. At the same time, the inner cavity of the clamping unit 4 is injected with liquid through the liquid injection tube 6 by a liquid injection machine, so that the battery cell is completely immersed in the electrolyte, thereby successfully pre-lithiating the battery cell, further expanding the capacitance of the battery cell and increasing the service life of the battery cell.

[0078] The working principle of this embodiment is: Refer to Figures 1 to 7 , the staff fixes the support plate 13 on the upper end of the bottom plate 11 through the fixing plate 17, stacks multiple clamping units 4 on the upper end of the support plate 13 in sequence, limits them through the limiting column 18, starts the hydraulic cylinder 15, makes it apply pressure to the cover plate 2, and then squeezes multiple clamping units 4, so that the upper clamping plate 41 and the lower clamping plate 46 become a sealed cavity. During this process, the lithium sheet installed in the inner cavity of the upper clamping plate 41 and the battery cell at the upper end of the lower clamping plate 46 are brought into contact with each other by the pressure applied by the wedge-shaped block 42. At the same time, the communication plug 53 is squeezed, and then a pressure is generated on the inner cavity of the conduit 51, so that the spring 54 is compressed to form an upper and lower connected environment. Then, the inner cavity of the clamping unit 4 is evacuated through the communication unit 5. At the same time, the inner cavity of the clamping unit 4 is injected with liquid through the liquid injection tube 6 by a liquid injection machine, so that the battery cell is completely immersed in the electrolyte, thereby successfully pre-lithiating the battery cell. The whole set of processes in this application does not require manual operation, realizes the pre-lithiation link of the battery cell in a constant temperature and vacuum environment, increases the capacity and service life of the battery, realizes the automation and mass production of the pre-lithiation of the battery cell, and greatly improves the practicability of the present invention.

[0079] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0080] The above-described embodiments merely represent the implementation manners of the invention. The protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. An automated prelithiation device, characterized in that: It includes a fixed disassembly and assembly unit (1), a communication unit (5), and a liquid injection pipe (6). The fixed disassembly and assembly unit (1) includes a bottom plate (11) and a mounting frame (12) fixed on the bottom plate (11). A hydraulic cylinder (15) is installed at the top of the mounting frame (12). A number of clamping units (4) are provided at the upper end of the bottom plate (11). The lower end of the telescopic rod of the hydraulic cylinder (15) is aligned with the cover plate (2). Each of the multiple clamping units (4) includes an upper clamping plate (41) and a lower clamping plate (46). A closed space is formed between the upper clamping plate (41) and the lower clamping plate (46). The upper end of the uppermost upper clamping plate (41) is clamped with the cover plate (2). The communication unit (5) includes a number of communication plugs (53). One end of each of the multiple communication plugs (53) is communicated with the inner cavity of the upper clamping plate (41). A number of liquid injection pipes (6) are provided, and one end of each of the multiple liquid injection pipes is communicated with the inner cavity of the lower clamping plate (46).

2. The automated prelithiation device according to claim 1, characterized in that: The fixed disassembly and assembly unit (1) further includes a support plate (13). Limiting grooves (131) are opened at the edge positions of the front and rear ends of the support plate (13). Support feet (132) are fixedly connected to the periphery of the lower end of the support plate (13). The support plate (13) is connected to the bottom plate (11) through the support feet (132). Each of the multiple clamping units (4) is placed on the upper end of the support plate (13).

3. An automated pre-lithiation device according to claim 2, characterized in that: The mounting frame (12) is provided with 6 columns. A cylinder (14) is fixedly installed on the outer side of each column. The output ends of the multiple cylinders (14) correspond to the positions of the limiting grooves (131). A connection block (134) is fixedly installed at the middle position of the left side wall of the support plate (13). A fixing plate (17) is fixedly installed at the position corresponding to the connection block (134) at the left edge of the bottom plate (11). One end of the fixing plate (17) is screwed to the bottom plate (11), and the other end is clamped with the mounting block (134) through a pin shaft. A number of connecting plates (133) are provided at the upper end of the support plate (13), corresponding to the positions of the limiting grooves (131), and the open ends of the connecting plates (133) all face outward.

4. An automated prelithiation device according to claim 3, characterized in that: Limiting columns (18) are provided at the positions corresponding to the connecting plates (133) at the upper end of the support plate (13). Limiting blocks (19) are connected to the upper ends of the limiting columns (18). Each of the multiple limiting blocks (19) is clamped with the cover plate (2). The lower end of the limiting column (18) is clamped with the open end of the connecting plate (133) through a pin shaft, and the end of the limiting column (18) is clamped in the inner cavity of the limiting groove (131).

5. An automated prelithiation device according to claim 1, characterized in that: Through holes (21) are opened at the edge positions of the left and right ends of the cover plate (2). Quick-installation handles (3) are provided in the inner cavities of the through holes (21). The lower ends of the quick-installation handles (3) penetrate through the cover plate (2) and extend to the lower end to be clamped with the uppermost upper clamping plate (41). The lower end of the upper clamping plate (41) is provided with a plurality of first mounting grooves (43). Both sides of the first mounting groove (43) are fixedly connected with stoppers (431), and the inner cavities of the first mounting grooves (43) are fixedly connected with pressing plates (432) by bolts.

6. The automated prelithiation device according to claim 5, wherein: The upper end of the lower clamping plate (46) is provided with second mounting grooves (47) at positions corresponding to the first mounting grooves (43). The inner cavities of the second mounting grooves (47) are fixedly installed with pocket plates (471) by bolts; The lower end of the upper clamping plate (41) is fixedly connected with wedge-shaped blocks (42) on both sides of each first mounting groove (43) and second mounting groove (47).

7. An automated prelithiation device according to claim 1, characterized in that: Connection holes (48) are provided on the outer sides of both ends of the upper clamping plate (41) and the lower clamping plate (46), and the connection holes (48) respectively correspond to the inner diameters of the communication unit (5) and the liquid injection pipe (6).

8. An automated prelithiation device according to claim 1, characterized in that: Pluggable connectors (44) are arranged at the left and right ends on the outer sides of a plurality of the upper clamping plates (41), and observation ports (45) are installed on the sides far away from each other of every two of the pluggable connectors (44).

9. An automated prelithiation device according to claim 1, characterized in that: The communication unit (5) includes a plurality of conduits (51). A through pipe (52) is communicated with the middle position on the outer side of each conduit (51), and one end of a communication plug (53) is fixedly installed in the inner cavity of the through pipe (52).

10. An automated prelithiation device according to claim 9, characterized in that: A "V-shaped" port (511) is provided at the lower end of the inner cavity of each conduit (51), and steel balls (55) are provided at the upper ends of the ports (511); A spring (54) is installed in the inner cavity of each conduit (51), and the upper and lower ends of the spring (54) are in contact with the steel balls (55).

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