Preparation device and preparation method of lithium ion battery electrolyte

Abstract

The invention relates to the technical field of battery production equipment, in particular to a lithium ion battery electrolyte configuration device and a configuration method thereof.The configuration device comprises a configuration support and a configuration barrel, the configuration barrel is composed of a bottom support, a barrel cover and a barrel wall, the barrel wall is composed of a first half wall and a second half wall which are symmetrically arranged, and a stirring mechanism is arranged on the barrel cover; an isolating membrane is assembled on the barrel cover through a waterproof butt joint structure, a lower check ring is connected to the bottom of the isolating membrane, a lifting ring and a sealing membrane are arranged on the lower check ring, the sealing membrane is connected between the lower surface of the lower check ring and the bottom end of the lifting ring, a guide baffle is arranged in the bottom support, and the sealing membrane is attached to the guide baffle to form sealing. A mounting seat is mounted in the bottom support, a locking force storage type downward pressing structure is arranged in the mounting seat, and the downward pressing structure can be unlocked after the lifting ring deforms along the guide baffle; the purposes of reducing the cleaning cost of the device and ensuring the accurate proportion of the electrolyte are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production equipment, and in particular to a device and method for configuring a lithium ion battery electrolyte. Background Art

[0002] Batteries can convert chemical energy into electrical energy. In addition to the installation and arrangement of some electrode sheets inside the battery, the role played by the electrolyte solution is also very important. Therefore, in the production process of the battery, the electrolyte configuration device is a necessary production equipment. For example, the invention patent with the document number CN108598600A discloses an electrolyte configuration device for battery production, including a configuration box and a liquid uniformity box. The configuration box is penetrated by a liquid guide tube, and the liquid uniformity box is located above the liquid guide tube. The electrolyte configuration device for battery production has a multi-layer configuration storage structure in the device through the setting of the configuration box, which can meet the configuration requirements of large-capacity electrolyte. Through the connecting pipe structure of the liquid injection rack, the main pipeline and the branch pipeline, the electrolyte can be evenly stored in each configuration box to complete the basic preparation. The uniform setting of the leak hole ensures that the electrolyte can be evenly input into each configuration box.

[0003] However, the mixing equipment described in the aforementioned invention patent is typically used in the production of lead-acid batteries. The electrolyte raw materials typically do not contain organic matter, making them easier to clean directly with water. However, the main components of the electrolyte in lithium-ion batteries are typically organic solvents (such as dimethyl carbonate (DMC) and ethylene carbonate (EC)) and lithium salts (such as lithium hexafluorophosphate (LiPF6). After processing in the mixing device, cleaning the mixing device is costly. If the residue is not completely removed, it will be difficult to control the mixing ratio for the next batch, affecting the battery processing quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a lithium-ion battery electrolyte configuration device and configuration method thereof, so as to reduce the cleaning cost of the device and ensure the accurate electrolyte ratio, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a configuration device for lithium-ion battery electrolyte, comprising a configuration bracket and a configuration cylinder, wherein the configuration cylinder is arranged in the configuration bracket, and the configuration cylinder is composed of a bottom bracket, a cylinder cover and a cylinder wall, a liquid outlet pipe is installed on the bottom bracket, and a feed pipe is provided on the cylinder cover, the cylinder wall is composed of a first half wall and a second half wall which are symmetrically arranged, and the first half wall and the second half wall are rotatably mounted on the bottom bracket, the bottom bracket is fixedly mounted on the bottom of the configuration bracket, and the cylinder cover is lifted and mounted on the top of the configuration bracket, and a stirring mechanism is provided on the cylinder cover, and the cylinder cover is equipped with a waterproof docking structure. The bottom of the isolation membrane is connected with a lower retaining ring. When the first half wall and the second half wall are closed to form a complete cylinder wall, they are pressed on the lower retaining ring to keep the isolation membrane in tension. The lower retaining ring is provided with a lifting ring and a closing membrane, and the closing membrane is connected between the lower surface of the lower retaining ring and the bottom end of the lifting ring. A guide baffle is provided in the bottom support, and the lifting ring can be deformed along the guide baffle when pressed down by the cylinder wall, so that the closing membrane is attached to the guide baffle to form a seal. A mounting seat is installed in the bottom support, and a locking and force-storing downward pressing structure is provided in the mounting seat. The lifting ring can unlock the downward pressing structure after being deformed along the guide baffle.

[0006] Preferably, the configuration cylinder adopts a cylindrical structure, and the cross-sectional shapes of the first half wall and the second half wall are both semicircular. The first half wall and the second half wall are installed on both sides of the base through a hinge structure, and the first half wall and the second half wall are fixed by a locking piece when they are closed, and a sealing structure is provided at the contact position of the first half wall and the second half wall.

[0007] Preferably, the base is fixed by a support rod, and a lifting guide rail is provided on the top of the configuration bracket. The cylinder cover is movably installed in the lifting guide rail and is lifted and lowered by a driving structure in the lifting guide rail. The liquid outlet pipe is provided at the bottom center of the base.

[0008] Preferably, a stirring motor is installed on the top of the cylinder cover, and the stirring mechanism is driven by the stirring motor. The stirring mechanism is composed of a stirring shaft and stirring blades.

[0009] Preferably, the waterproof docking structure includes a clamping ring installed in the cylinder cover, and the interface shape of the clamping ring is L-shaped, and the clamping ring is provided with an external thread, the clamping ring is connected to an upper retaining ring, and the upper retaining ring is provided with an internal thread, and the isolation membrane is installed at the bottom of the upper retaining ring.

[0010] Preferably, a slide groove is provided on the lower retaining ring, and the lifting ring is installed in the slide groove, the upper half of the lifting ring is provided with a notch for installation, and the lower half of the lifting ring is a complete circle, and a spring is provided in the slide groove to support the lifting ring, so that the upper half of the lifting ring protrudes from the lower retaining ring.

[0011] Preferably, the closing membrane is located in the inner ring of the lifting ring and is connected to the inner surface of the lifting ring. The guide baffle is an annular plate and is installed on the inner wall of the base and is located below the lifting ring.

[0012] Preferably, the mounting seat is installed on the inner wall of the base, and a cavity is provided in the mounting seat, the downward pressure structure includes a sliding seat vertically slidably installed in the cavity, the top of the sliding seat is connected to a downward pressure spring, and the bottom of the sliding seat is connected to a pressure ring, and the pressure ring is located above the guide baffle.

[0013] Preferably, a bayonet is provided on the side of the sliding seat, and a sliding rod is horizontally slidably installed in the cavity of the mounting seat, a positioning piece is provided on the sliding rod and can be connected to the bayonet, and an elastic piece is connected to the sliding rod, the bottom of the sliding rod is protruding from the sliding seat, and the sliding rod can be pushed by the deformed lifting ring.

[0014] A method for configuring a lithium-ion battery electrolyte configuration device, the configuration method comprising the following steps: S1, assembling a clean separator on the cylinder cover, then closing the first half wall and the second half wall, and forming a complete configuration cylinder structure by assembling the bottom support, the cylinder cover, the first half wall and the second half wall. Adding the proportioned organic solvent and lithium salt from the cylinder cover feed pipe into the configuration cavity formed by the cylinder cover, the separator and the bottom support, the organic solvent and lithium salt are accelerated by the stirring mechanism until the lithium salt is completely dissolved in the organic solvent, and the prepared electrolyte is collected from the liquid outlet pipe; S2, after waiting for the electrolyte to be completely discharged, rotate the first half wall and the second half wall to open, then lift the cylinder cover through the lifting guide rail, take out the isolation membrane and clean it separately, and also clean each part of the configuration cylinder accordingly to avoid organic solvent residue, finally replace the isolation membrane, and reassemble the configuration cylinder, and repeat the mixing configuration process of step S1.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The configuration cylinder of the present invention adopts a detachable structure, consisting of a base, a cylinder cover, and a first half wall and a second half wall. The first half wall and the second half wall can be rotated open or closed and fixed by a locking member to form a complete cylindrical structure. At the same time, an isolation membrane can be set on the cylinder cover. The first half wall and the second half wall only play a supporting role and do not directly contact the solvent. After one configuration is completed, the cylinder walls are separated and the cylinder cover is raised. The isolation membrane can be removed for cleaning, and the various parts of the configuration cylinder can also be easily cleaned, effectively avoiding organic solvent residue. This not only reduces the cleaning cost of the configuration device, but also ensures that the electrolyte ratio is accurate during the next configuration.

[0016] 2. The top of the isolation membrane of the present invention is initially installed on the cylinder cover through a waterproof docking structure. When the first half wall and the second half wall are closed, on the one hand, the two support and enclose the isolation membrane, and on the other hand, press on the lower retaining ring to press it downward, so that the isolation membrane is stretched and fits against the inner wall of the cylinder wall, allowing the loading of solvent. At the same time, the bottom of the isolation membrane can be sealed by the lower retaining ring and the closing membrane thereon. When the first half wall and the second half wall are closed, the closing membrane can automatically deform to form a seal, preventing the solvent from entering the gap between the isolation membrane and the cylinder wall, avoiding contamination of the cylinder wall, and reducing the cleaning cost of the configuration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a second schematic diagram of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the cylinder wall of the present invention in an open state.

[0020] Figure 4 Schematic diagram of the cylinder cover and isolation membrane structure of the present invention.

[0021] Figure 5 Schematic diagram of the cylinder cover structure of the present invention.

[0022] Figure 6 Schematic diagram of the isolation membrane structure of the present invention.

[0023] Figure 7 It is a cross-sectional view of the isolation membrane structure of the present invention.

[0024] Figure 8 Schematic diagram of the base and isolation membrane structure of the present invention.

[0025] Figure 9 Schematic diagram of the position of the isolation membrane in the cylinder wall of the present invention.

[0026] Figure 10 for Figure 9 A magnified schematic diagram of area A in the middle.

[0027] In the figure: 1. Configuration bracket; 2. Bottom support; 3. Cylinder cover; 4. Liquid outlet pipe; 5. Feed pipe; 6. Cylinder wall; 601. First half wall; 602. Second half wall; 7. Locking piece; 8. Support rod; 9. Lifting guide rail; 10. Stirring mechanism; 11. Clamping ring; 12. External thread; 13. Isolation membrane; 14. Upper retaining ring; 15. Internal thread; 16. Lower retaining ring; 17. Lifting ring; 18. Sealing membrane; 19. Guide baffle; 20. Mounting seat; 21. Sliding seat; 22. Pressing ring; 23. Down-pressing spring; 24. Bayonet; 25. Sliding rod; 26. Positioning piece; 27. Elastic piece. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 10 The present invention provides a technical solution: a configuration device for lithium-ion battery electrolyte, comprising a configuration bracket 1 and a configuration cylinder, the configuration cylinder is arranged in the configuration bracket 1, and the configuration cylinder is composed of a base 2, a cylinder cover 3 and a cylinder wall 6, a liquid outlet pipe 4 is installed on the base 2, and a feed pipe 5 is provided on the cylinder cover 3, the cylinder wall 6 is composed of a first half wall 601 and a second half wall 602 symmetrically arranged, and the first half wall 601 and the second half wall 602 are rotatably mounted on the base 2, the base 2 is fixedly mounted on the bottom of the configuration bracket 1, and the cylinder cover 3 is lifted and mounted on the top of the configuration bracket 1, and a stirring mechanism 10 is provided on the cylinder cover 3, and an isolation membrane 13 is assembled on the cylinder cover 3 through a waterproof docking structure, and the isolation membrane 13 The bottom is connected to a lower retaining ring 16. When the first half wall 601 and the second half wall 602 are closed to form a complete cylinder wall 6, they are pressed on the lower retaining ring 16 to keep the isolation membrane 13 in tension. A lifting ring 17 and a closing membrane 18 are provided on the lower retaining ring 16, and the closing membrane 18 is connected between the lower surface of the lower retaining ring 16 and the bottom end of the lifting ring 17. A guide baffle 19 is provided in the bottom support 2, and the lifting ring 17 can be deformed along the guide baffle 19 when pressed down by the cylinder wall 6, so that the closing membrane 18 is attached to the guide baffle 19 to form a seal. A mounting seat 20 is installed in the bottom support 2, and a locking and force-storing downward pressing structure is provided in the mounting seat 20. After the lifting ring 17 is deformed along the guide baffle 19, the downward pressing structure can be unlocked.

[0030] The configuration cylinder adopts a cylindrical structure, and the cross-sectional shapes of the first half wall 601 and the second half wall 602 are both semicircular. The first half wall 601 and the second half wall 602 are installed on both sides of the base 2 through a hinge structure, and the first half wall 601 and the second half wall 602 are fixed by a locking member 7 when they are closed, and a sealing structure is provided at the contact position of the first half wall 601 and the second half wall 602.

[0031] The configuration device of the present invention adopts a cylindrical structure, in which the configuration work of the lithium-ion battery electrolyte can be carried out. The configuration cylinder adopts a detachable structure, which is composed of a base 2, a cylinder cover 3, and a first half wall 601 and a second half wall 602. The first half wall 601 and the second half wall 602 can be rotated open or closed and fixed by a locking member 7 to form a complete cylindrical structure.

[0032] The base 2 is fixed by a support rod 8, and a lifting guide rail 9 is provided on the top of the configuration bracket 1. The cylinder cover 3 is movably installed in the lifting guide rail 9 and is lifted and lowered by the driving structure in the lifting guide rail 9. The liquid outlet pipe 4 is arranged at the bottom center position of the base 2.

[0033] The base 2 is fixed to the bottom of the configuration bracket 1 by a support rod 8, and the cylinder cover 3 is installed on the top of the configuration bracket 1 through a lifting guide rail 9. When it needs to be disassembled, the first half wall 601 and the second half wall 602 are first unlocked to open them to both sides, and then the cylinder cover 3 is lifted by the lifting guide rail 9. Conversely, the cylinder wall 6 can be combined to form a basic cylindrical structure, in which the electrolyte is mixed and configured, and the organic solvent and lithium salt are added from the feed pipe 5 of the cylinder cover 3, and the mixed electrolyte is collected from the liquid outlet pipe 4.

[0034] A stirring motor is installed on the top of the cylinder cover 3, and the stirring mechanism 10 is driven by the stirring motor. The stirring mechanism 10 is composed of a stirring shaft and stirring blades.

[0035] The organic solvent and lithium salt added into the preparation cylinder according to the proportion are accelerated to mix by the stirring mechanism 10 until the lithium salt is completely dissolved in the organic solvent.

[0036] The waterproof docking structure includes a clamping ring 11 installed in the cylinder cover 3, and the interface shape of the clamping ring 11 is L-shaped, and an external thread 12 is provided on the clamping ring 11. The clamping ring 11 is connected to an upper retaining ring 14, and an internal thread 15 is provided on the upper retaining ring 14. The isolation membrane 13 is installed at the bottom of the upper retaining ring 14.

[0037] The present invention takes into account that it is difficult to clean the organic solvent on the cylinder wall 6. In addition to dividing the cylinder wall 6 into the first half wall 601 and the second half wall 602 that can be opened, an isolation membrane 13 can also be set on the cylinder cover 3. The first half wall 601 and the second half wall 602 only play a supporting role and are not in direct contact with the solvent. After one configuration is completed, the cylinder wall 6 is separated and the cylinder cover 3 is raised. The isolation membrane 13 can be taken out for cleaning, and the various parts of the configuration cylinder can also be easily cleaned, effectively avoiding organic solvent residues and ensuring that the electrolyte ratio is accurate during the next configuration. The isolation membrane 13 is waterproof. The docking structure is installed, and when the first half wall 601 and the second half wall 602 are open, the isolation membrane 13 is put on the stirring mechanism 10, and the upper retaining ring 14 at its upper end is connected to the clamping ring 11 through a threaded structure, and the isolation membrane 13 is quickly hoisted. At this time, the isolation membrane 13 is in a loose state, and the lower retaining ring 16 is hung at the bottom of the isolation membrane 13. When the first half wall 601 and the second half wall 602 are closed, on the one hand, the two support and enclose the isolation membrane 13, and on the other hand, press on the lower retaining ring 16 to press it down, so that the isolation membrane 13 is tightened and fits on the inner wall of the cylinder wall 6, so that the solvent can be loaded.

[0038] A chute is provided on the lower retaining ring 16, and a lifting ring 17 is installed in the chute. The upper half of the lifting ring 17 is provided with a notch for installation, and the lower half of the lifting ring 17 is a complete circle. A spring is provided in the chute to support the lifting ring 17, so that the upper half of the lifting ring 17 protrudes from the lower retaining ring 16. A sealing membrane 18 is located on the inner ring of the lifting ring 17 and is connected to the inner surface of the lifting ring 17. The guide baffle 19 is an annular plate and is installed on the inner wall of the base 2. The guide baffle 19 is located below the lifting ring 17.

[0039] The bottom of the isolation membrane 13 is sealed by the lower retaining ring 16 and the closing membrane 18 thereon to prevent the solvent from entering the gap between the isolation membrane 13 and the cylinder wall 6. When the first half wall 601 and the second half wall 602 are closed, the lifting ring 17 is first pressed down to move downward in the lower retaining ring 16, and then pressed on the lower retaining ring 16. The downward moving lifting ring 17 encounters the obstruction of the guide baffle 19 and can be deformed along with the guide baffle 19. The closing membrane 18 is connected to the lifting ring 17 and can be pulled along with it and finally be attached to the guide baffle 19 to form a sealing joint with the guide baffle 19.

[0040] The mounting seat 20 is mounted on the inner wall of the base 2, and a cavity is provided in the mounting seat 20. The downward pressure structure includes a sliding seat 21 that slides vertically in the cavity, and a downward pressure spring 23 is connected to the top of the sliding seat 21, and a pressure ring 22 is connected to the bottom of the sliding seat 21. The pressure ring 22 is located above the guide baffle 19. A bayonet 24 is provided on the side of the sliding seat 21, and a sliding rod 25 is horizontally slidably installed in the cavity of the mounting seat 20. The sliding rod 25 is provided with a positioning member 26 that can be connected to the bayonet 24, and an elastic member 27 is connected to the sliding rod 25. The bottom of the sliding rod 25 protrudes from the sliding seat 21, and the sliding rod 25 can be pushed by the deformed lifting ring 17.

[0041] When the lifting ring 17 is deformed to the limit position, it will generate a thrust acting on the slide rod 25, so that the slide rod 25 overcomes the elastic force of the elastic member 27 and moves, thereby pulling the positioning member 26 thereon out of the bayonet 24. The restriction on the slide rod 25 disappears, and the elastic force accumulated by the downward pressure spring 23 can push the sliding seat 21 downward. The pressure ring 22 on the sliding seat 21 presses on the deformed lifting ring 17 and the sealing membrane 18, further promoting the sealing effect of the sealing membrane 18 and preventing the electrolyte from contaminating the cylinder wall 6.

[0042] A method for configuring a lithium-ion battery electrolyte configuration device, the configuration method comprising the following steps: S1, assembling a clean isolation membrane 13 on the cylinder cover 3, then closing the first half wall 601 and the second half wall 602. The base 2, cylinder cover 3, and the first half wall 601 and the second half wall 602 are combined to form a complete configuration cylinder structure. The proportioned organic solvent and lithium salt are added from the feed pipe 5 of the cylinder cover 3 into the configuration cavity formed by the cylinder cover 3, the isolation membrane 13, and the base 2. The organic solvent and lithium salt are accelerated to mix by the stirring mechanism 10 until the lithium salt is completely dissolved in the organic solvent. The configured electrolyte is collected from the liquid outlet pipe 4; S2, after waiting for the electrolyte to be completely discharged, rotate the first half wall 601 and the second half wall 602 to open, then lift the cylinder cover 3 through the lifting guide rail 9, take out the isolation membrane 13 and clean it separately, and also clean each part of the configuration cylinder accordingly to avoid organic solvent residue, finally replace the isolation membrane 13, and reassemble the configuration cylinder, and repeat the mixing configuration process of step S1.

[0043] When the present invention is in use: first, the configuration device adopts a cylindrical structure, in which the configuration work of the lithium-ion battery electrolyte can be carried out. The configuration cylinder adopts a detachable structure, which is composed of a base 2, a cylinder cover 3 and a first half wall 601 and a second half wall 602. The first half wall 601 and the second half wall 602 can be rotated to open, or closed and fixed by a locking member 7 to form a complete cylindrical structure. The base 2 is fixed to the bottom of the configuration bracket 1 by a support rod 8, and the cylinder cover 3 is installed on the top of the configuration bracket 1 by a lifting guide rail 9. When disassembly is required, the first half wall 601 and the second half wall 602 are first unlocked to open to both sides, and then the cylinder cover 3 is raised by the lifting guide rail 9. Conversely, the cylinder wall 6 can be assembled. The organic solvent and lithium salt are added from the feed pipe 5 of the cylinder cover 3, and the mixed electrolyte is collected from the liquid outlet pipe 4. The organic solvent and lithium salt added to the configuration cylinder according to the ratio are accelerated by the stirring mechanism 10 until the lithium salt is completely dissolved in the organic solvent. The present invention takes into account that it is difficult to clean the organic solvent on the cylinder wall 6 of the configuration cylinder. In addition to dividing the cylinder wall 6 into an openable first half wall 601 and a second half wall 602, an isolation membrane 13 can also be provided on the cylinder cover 3. The first half wall 601 and the second half wall 602 only play a supporting role and do not directly contact the solvent. After one configuration is completed, the cylinder wall 6 is separated and the cylinder cover 3 is raised, and the The isolation membrane 13 is taken out for cleaning, and the various parts of the configuration cylinder can also be easily cleaned, effectively avoiding organic solvent residues and ensuring that the electrolyte ratio is accurate during the next configuration. The isolation membrane 13 is installed through a waterproof docking structure. When the first half wall 601 and the second half wall 602 are opened, the isolation membrane 13 is put on the stirring mechanism 10, and the upper retaining ring 14 at its upper end is connected to the clamping ring 11 through a threaded structure to quickly complete the lifting of the isolation membrane 13. At this time, the isolation membrane 13 is in a loose state, and the lower retaining ring 16 is hung at the bottom of the isolation membrane 13. When the first half wall 601 and the second half wall 602 are closed, on the one hand, the two support and enclose the isolation membrane 13, and on the other hand, press on the lower retaining ring 16 to press it down, so that the isolation membrane 13 is pulled It fits tightly against the inner wall of the cylinder wall 6 and can be used to load the solvent. The bottom of the isolation membrane 13 is sealed by the lower retaining ring 16 and the sealing membrane 18 thereon to prevent the solvent from entering the gap between the isolation membrane 13 and the cylinder wall 6. When the first half wall 601 and the second half wall 602 are closed, the lifting ring 17 is first pressed down to move downward in the lower retaining ring 16, and then pressed on the lower retaining ring 16. The downward-moving lifting ring 17 encounters the obstruction of the guide baffle 19 and can be deformed along with the guide baffle 19. The sealing membrane 18 is connected to the lifting ring 17 and can be pulled along with it and finally fitted on the guide baffle 19 to form a sealing joint with the guide baffle 19. When the lifting ring 17 is deformed to the limit position, it will generate a thrust acting on the slide rod 25.The slide rod 25 overcomes the elastic force of the elastic member 27 and moves, thereby pulling the positioning member 26 thereon out of the bayonet 24. The restriction on the slide rod 25 is eliminated, and the elastic force accumulated by the downward pressure spring 23 can push the slide seat 21 downward. The pressure ring 22 on the slide seat 21 presses on the deformed lifting ring 17 and the sealing membrane 18, further promoting the sealing effect of the sealing membrane 18 and preventing the electrolyte from contaminating the cylinder wall 6.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery electrolyte dispensing device, comprising a dispensing bracket (1) and a dispensing cylinder, characterized in that: The configuration cylinder is arranged in the configuration bracket (1), and the configuration cylinder is composed of a base (2), a cylinder cover (3) and a cylinder wall (6); a liquid outlet pipe (4) is installed on the base (2), and a feed pipe (5) is provided on the cylinder cover (3); the cylinder wall (6) is composed of a first half wall (601) and a second half wall (602) symmetrically arranged, and the first half wall (601) and the second half wall (602) are rotatably installed on the base (2); the base (2) is fixedly installed at the bottom of the configuration bracket (1), and the cylinder cover (3) is lifted and installed at the top of the configuration bracket (1); a stirring mechanism (10) is provided on the cylinder cover (3); an isolation membrane (13) is assembled on the cylinder cover (3) through a waterproof docking structure, and a lower retaining ring (16) is connected to the bottom of the first half wall (60 1) When the first and second half walls (602) are closed to form a complete cylinder wall (6), they are pressed on the lower retaining ring (16) so that the isolation membrane (13) maintains tension. The lower retaining ring (16) is provided with a lifting ring (17) and a closing membrane (18), and the closing membrane (18) is connected between the lower surface of the lower retaining ring (16) and the bottom end of the lifting ring (17). A guide baffle (19) is provided in the bottom support (2), and when the lifting ring (17) is pressed down by the cylinder wall (6), it can be deformed along the guide baffle (19) to fit the closing membrane (18) on the guide baffle (19) to form a seal. A mounting seat (20) is installed in the bottom support (2), and a locking and force-storing pressing structure is provided in the mounting seat (20). After the lifting ring (17) is deformed along the guide baffle (19), the pressing structure can be unlocked.

2. The device for preparing a lithium-ion battery electrolyte according to claim 1, wherein: The configuration cylinder adopts a cylindrical structure, and the cross-sectional shapes of the first half wall (601) and the second half wall (602) are both semicircular. The first half wall (601) and the second half wall (602) are installed on both sides of the base (2) through a hinge structure, and the first half wall (601) and the second half wall (602) are fixed by a locking member (7) when they are closed, and a sealing structure is provided at the contact position of the first half wall (601) and the second half wall (602).

3. The device for preparing a lithium-ion battery electrolyte according to claim 1, wherein: The base support (2) is fixed by a support rod (8), and a lifting guide rail (9) is provided on the top of the configuration bracket (1). The cylinder cover (3) is movably installed in the lifting guide rail (9) and is lifted and lowered by a driving structure in the lifting guide rail (9). The liquid outlet pipe (4) is provided at the bottom center of the base support (2).

4. The device for preparing a lithium-ion battery electrolyte according to claim 1, wherein: A stirring motor is installed on the top of the cylinder cover (3), and the stirring mechanism (10) is driven by the stirring motor. The stirring mechanism (10) is composed of a stirring shaft and stirring blades.

5. The device for preparing a lithium-ion battery electrolyte according to claim 1, wherein: The waterproof docking structure comprises a clamping ring (11) installed in the cylinder cover (3), wherein the interface shape of the clamping ring (11) is L-shaped, and the clamping ring (11) is provided with an external thread (12), the clamping ring (11) is connected to an upper retaining ring (14), and the upper retaining ring (14) is provided with an internal thread (15), and the isolation membrane (13) is installed at the bottom of the upper retaining ring (14).

6. The device for preparing a lithium-ion battery electrolyte according to claim 1, wherein: A slide groove is provided on the lower retaining ring (16), and the lifting ring (17) is installed in the slide groove. A notch is provided on the upper half of the lifting ring (17) for installation, and the lower half of the lifting ring (17) is a complete circle. A spring is provided in the slide groove to support the lifting ring (17), so that the upper half of the lifting ring (17) protrudes from the lower retaining ring (16).

7. The device for preparing a lithium-ion battery electrolyte according to claim 1, wherein: The closing membrane (18) is located in the inner ring of the lifting ring (17), and the closing membrane (18) is connected to the inner surface of the lifting ring (17). The guide baffle (19) is an annular plate, and the guide baffle (19) is installed on the inner wall of the base (2), and the guide baffle (19) is located below the lifting ring (17).

8. The device for preparing electrolyte for lithium-ion batteries according to claim 1, wherein: The mounting seat (20) is mounted on the inner wall of the base (2), and a cavity is provided in the mounting seat (20). The downward pressure structure comprises a sliding seat (21) vertically slidably mounted in the cavity, and a downward pressure spring (23) is connected to the top of the sliding seat (21), and a pressure ring (22) is connected to the bottom of the sliding seat (21), and the pressure ring (22) is located above the guide baffle (19).

9. The device for preparing electrolyte for lithium-ion batteries according to claim 7, characterized in that: A bayonet (24) is provided on the side of the sliding seat (21), and a sliding rod (25) is horizontally slidably installed in the cavity of the mounting seat (20), a positioning piece (26) is provided on the sliding rod (25) and can be connected to the bayonet (24), and an elastic piece (27) is connected to the sliding rod (25), the bottom of the sliding rod (25) is protruding from the sliding seat (21), and the sliding rod (25) can be pushed by the deformed lifting ring (17).

10. A method for preparing a lithium-ion battery electrolyte according to any one of claims 1 to 9, characterized in that: The configuration method includes the following steps: S1, assembling a clean isolation membrane (13) on the cylinder cover (3), and then closing the first half wall (601) and the second half wall (602), and forming a complete configuration cylinder structure by combining the bottom support (2), the cylinder cover (3) and the first half wall (601) and the second half wall (602), adding the proportioned organic solvent and lithium salt from the feed pipe (5) of the cylinder cover (3) into the configuration cavity formed by the cylinder cover (3), the isolation membrane (13) and the bottom support (2), and accelerating the mixing of the organic solvent and the lithium salt by the stirring mechanism (10) until the lithium salt is completely dissolved in the organic solvent, and collecting the configured electrolyte from the liquid outlet pipe (4); S2, after waiting for the electrolyte to be completely discharged, the first half wall (601) and the second half wall (602) are rotated open, and then the cylinder cover (3) is raised by the lifting guide rail (9), and the isolation membrane (13) is taken out for separate cleaning. The various parts of the configuration cylinder are also cleaned accordingly to avoid organic solvent residues. Finally, the isolation membrane (13) is replaced, and the configuration cylinder is reassembled, and the mixing configuration process of step S1 is repeated.

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