Production device of lithium ion battery electrolyte
The dual sealing mechanism in the production device isolates air from the electrolyte during mixing, ensuring high-quality electrolyte production and prolonging the device's lifespan.
Patent Information
- Application Number
- CN202421842544.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-31
AI Technical Summary
During the feeding and mixing process of existing lithium-ion battery electrolyte production devices, air is prone to contact with the electrolyte, affecting the quality of the electrolyte, and is harmful to the service life of the device during long-term storage.
The feeding chamber and the mixing chamber are provided with a sealing structure 1 and a sealing structure 2, including a sealing piston and a rotating disk. Through the movement of the sealing piston and the use of the electrolyte circulation pump, the electrolyte is ensured to mix under a sealed environment and prevent air from entering.
It improves the production quality of electrolyte, reduces the contact between air and electrolyte, and extends the service life of the device.
Smart Images
Figure CN223096657U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lithium-ion battery electrolyte production, and particularly relates to a production device for lithium-ion battery electrolyte. Background Art
[0002] When formulating a lithium-ion battery electrolyte, organic solvents, lithium salts, and other additives need to be stirred and mixed in a closed container, and air and moisture need to be prevented from entering the electrolyte during the mixing process. A production device for lithium-ion battery electrolyte is described in the Chinese utility model patent CN206353582U, which includes a feeding chamber and a mixing chamber that are interconnected. The feeding chamber is provided with a solvent inlet and an additive inlet, and the mixing chamber is provided with an electrolyte outlet; the bottoms of the feeding chamber and the mixing chamber are connected through a lower connecting pipe, and the upper parts of the feeding chamber and the mixing chamber are connected through an upper connecting pipe; the lower connecting pipe is provided with an electrolyte circulation pump; a spiral blade is fixed on the inner wall of the mixing chamber. The beneficial effects include that the feeding chamber and the mixing chamber can be completely sealed to prevent air from entering and ensure the quality of the electrolyte. However, this solution still has defects in use. When feeding through the feeding chamber, the air originally in the feeding chamber can come into contact with and react with the electrolyte. When the electrolyte circulation pump discharges the electrolyte from the feeding chamber into the mixing chamber, the gas in the mixing chamber can also come into contact with and react with the electrolyte. Therefore, although this solution achieves indoor and outdoor sealing, there is generally air remaining in the feeding chamber and the mixing chamber when there is no electrolyte. If air is completely isolated, only the feeding chamber and the mixing chamber can be evacuated, which will affect the service life of the device during long-term storage.
[0003] In this regard, an improved device is needed to further improve the production quality of the electrolyte. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a production device for lithium-ion battery electrolyte, so as to overcome the defects mentioned in the background art. The specific technical solutions are as follows:
[0005] A production device for lithium-ion battery electrolyte includes a feeding chamber and a mixing chamber. A solvent inlet and an additive inlet are provided above the feeding chamber. The bottoms of the feeding chamber and the mixing chamber are connected through a lower connecting pipe, and the upper parts of the feeding chamber and the mixing chamber are connected through an upper connecting pipe; the lower connecting pipe is provided with an electrolyte circulation pump, an electrolyte outlet is provided below the mixing chamber, a sealing structure I is provided in the feeding chamber, and a sealing structure II is provided in the mixing chamber.
[0006] Preferably, the first sealing structure includes a first sealing piston disposed in the feeding chamber. Two inlet pipes are provided at the upper end of the first sealing piston. The inlet pipes are hollow pipes. The inner parts of the other ends of the inlet pipes are respectively connected to the solvent inlet or the additive and extend below the first piston. The inlet pipes are telescopic pipes; the side surface of the first sealing piston contacts the side wall of the feeding chamber.
[0007] Preferably, the second sealing structure includes a second sealing piston. A rotating disk is rotatably connected to the lower end of the second sealing piston. Stirring blades are fixedly connected below the rotating disk. A rotating shaft is provided above the second sealing piston. The rotating shaft passes through the second sealing piston and is fixedly connected to the rotating disk. The other end of the rotating shaft extends outside the mixing chamber and is fixedly connected to a first bevel gear. A lifting platform is provided below the first bevel gear. The lifting platform is sleeved around the rotating shaft and a limiting structure is provided below the lifting platform. A rotating motor is provided above the lifting platform. The output shaft of the rotating motor is fixedly connected to a second bevel gear. The second bevel gear meshes with the first bevel gear.
[0008] Preferably, the limiting structure includes a limiting pad fixedly connected to the rotating shaft and a telescopic rod fixedly connected to the lower part of the lifting platform. The other end of the telescopic rod is fixedly connected to the top wall of the mixing chamber. The top of the limiting pad contacts the lifting platform.
[0009] Preferably, the stirring blades are in the shape of a triangular pyramid and are distributed in a ring below the rotating disk.
[0010] Preferably, limiting blocks are provided below both ends of the upper communication pipe. The limiting blocks are respectively fixedly connected to the inner walls of the feeding chamber or the mixing chamber.
[0011] Preferably, a ventilation port is further provided at the top of the feeding chamber. The ventilation port is communicated with the space above the first piston in the feeding chamber.
[0012] Compared with the existing technology, the present utility model has the following beneficial effects:
[0013] In the production device of the lithium-ion battery electrolyte described in the present utility model, by providing the first sealing structure in the feeding chamber and the second sealing structure in the mixing chamber, that is, the first sealing piston and the second sealing piston, the electrolyte enters below the sealing piston and the air is located above the sealing piston, further improving the sealing performance of the feeding chamber and the mixing chamber, preventing air from entering, and ensuring the quality of the electrolyte. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.
[0015] Figure 1 is a structural schematic diagram of the present utility model.
[0016] Description of main reference numerals:
[0017] 1. Feeding chamber; 2. Mixing chamber; 3. Solvent inlet; 4. Additive inlet; 5. Lower connecting pipe; 6. Upper connecting pipe; 7. Electrolyte circulation pump; 8. Sealing structure I; 9. Sealing structure II; 10. Stirring blade; 801. Sealing piston I; 802. Inlet pipe; 901. Sealing piston II; 902. Rotating disk; 903. Rotating shaft; 904. Bevel gear I; 905. Lifting platform; 906. Bevel gear II; 907. Rotating motor; 11. Limiting structure; 1101. Limiting pad; 1102. Telescopic rod; 12. Limiting block; 13. Ventilation port. Specific embodiments
[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top part", "bottom part", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0020] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of the terms "first", "second", "third", etc., they are only for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0021] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "linkage", and "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The embodiments of the present utility model will be described below according to its overall structure.
[0022] The present utility model provides a production device for lithium-ion battery electrolyte, which includes a feeding chamber 1 and a mixing chamber 2. A solvent inlet 3 and an additive inlet 4 are provided above the feeding chamber 1. The bottoms of the feeding chamber 1 and the mixing chamber 2 are connected through a lower connecting pipe 5, and the upper parts of the feeding chamber 1 and the mixing chamber 2 are connected through an upper connecting pipe 6; an electrolyte circulation pump 7 is provided on the lower connecting pipe 5, and an electrolyte outlet is provided below the mixing chamber 2. A first sealing structure 8 is provided in the feeding chamber 1, and a second sealing structure 9 is provided in the mixing chamber 2.
[0023] The first sealing structure 8 includes a first sealing piston 801 provided in the feeding chamber 1. Two inlet pipes 802 are provided at the upper end of the first sealing piston 801. The inlet pipes 802 are hollow pipes. The inner parts of the other ends of the inlet pipes 802 are respectively connected to the solvent inlet 3 or the additive and extend below the first piston. The inlet pipes 802 are telescopic pipes; the side surface of the first sealing piston 801 contacts the side wall of the feeding chamber 1.
[0024] In the initial state, the first sealing piston 801 is located below the feeding chamber 1. When in use, the solvent and the additive respectively enter the space below the first sealing piston 801 in the feeding chamber 1 from the solvent inlet 3 or the additive inlet 4. As the added solvent and additive increase, the first sealing piston 801 will move upward in the feeding chamber 1 to ensure that the solvent and the additive do not contact the air during feeding.
[0025] The second sealing structure 9 includes a second sealing piston 901. A rotating disk 902 is rotatably connected to the lower end of the second sealing piston 901. Stirring blades 10 are fixedly connected below the rotating disk 902. A rotating shaft 903 is provided above the second sealing piston 901. The rotating shaft 903 passes through the second sealing piston 901 and is fixedly connected to the rotating disk 902. The other end of the rotating shaft 903 extends outside the mixing chamber 2 and is fixedly connected to a first bevel gear 904. A lifting platform 905 is provided below the first bevel gear 904. The lifting platform 905 is sleeved around the rotating shaft 903 and a limiting structure 11 is provided below the lifting platform 905. A rotating motor 907 is provided above the lifting platform 905. The output shaft of the rotating motor 907 is fixedly connected to a second bevel gear 906. The second bevel gear 906 meshes with the first bevel gear 904.
[0026] In the initial state, the sealing piston II 901 is located below the mixing chamber 2. When in use, the electrolyte circulation pump 7 is started, and the electrolyte located below the sealing piston I 801 is introduced into the space below the sealing piston II 901 in the mixing chamber 2. As the electrolyte circulation pump 7 continues to operate, the electrolyte below the sealing piston II 901 gradually increases, and the sealing piston II 901 moves upward in the mixing chamber 2. This setting ensures that during the movement of the electrolyte, the electrolyte does not come into contact with air. At the same time, the rotating motor 907 rotates to drive the rotating shaft 903 to rotate, and the rotating disk 902 and the stirring blades 10 arranged below the rotating disk 902 also rotate accordingly, driving the water flow of the electrolyte to rotate to form a vortex, stirring and fusing the solvent and the additive, and improving the quality of the electrolyte. A valve can be provided at the electrolyte outlet to increase the stirring time of the electrolyte to improve the degree of fusion. After stirring is completed, the electrolyte outlet is opened, and the electrolyte flows out from the electrolyte outlet under the action of gravity, or the lifting platform 905 can be lifted by external force extrusion to increase the outflow speed of the electrolyte.
[0027] The limiting structure 11 includes a limiting pad 1101 fixedly connected to the rotating shaft 903 and a telescopic rod 1102 fixedly connected to the lower part of the lifting platform 905. The other end of the telescopic rod 1102 is fixedly connected to the top wall of the mixing chamber 2, and the top of the limiting pad 1101 contacts the lifting platform 905.
[0028] The limiting pad 1101 is combined with the bevel gear I 904 to limit the displacement of the lifting platform 905 along the direction of the rotating shaft 903, and the telescopic rod 1102 is used to limit the rotation of the lifting platform 905 along the rotating shaft 903.
[0029] The stirring blades 10 are in the shape of a triangular pyramid and are annularly distributed below the rotating disk 902 to increase the formation of vortices during rotation and improve the stirring efficiency.
[0030] Limit blocks 12 are provided below both ends of the upper connecting pipe 6. The limit blocks 12 are respectively fixedly connected to the inner walls of the feeding chamber 1 or the mixing chamber 2. The limit blocks are used to limit the movement of the sealing piston I 801 and the sealing piston II 901 to prevent the sealing piston I 801 and the sealing piston II 901 from blocking the upper connecting pipe.
[0031] An air vent 13 is further provided at the top of the feeding chamber 1, and the air vent 13 is communicated with the space above the piston I in the feeding chamber 1.
[0032] When the device is stored, both the sealing piston I 801 and the sealing piston II 901 are at the bottom of the feeding chamber 1 or the mixing chamber 2, and there is air above the sealing piston I 801 and the sealing piston II 901. When in use, the solvent and the additive enter the space below the sealing piston I 801 in the feeding chamber 1 from the solvent inlet 3 or the additive inlet 4 respectively, and the air above the sealing piston I 801 will be discharged from the vent 13; when the electrolyte circulation pump 7 is started, the air above the sealing piston II 901 enters above the sealing piston I 801 through the upper connecting pipe or is discharged from the exhaust port. Therefore, the exhaust port plays a role in balancing the air pressure, reducing the influence of the air pressure difference inside and outside the device on the side wall of the device, so as to improve the service life of the device.
[0033] The foregoing description of the specific exemplary embodiments of the present invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made in accordance with the above teachings. Although the embodiments of the present invention have been shown and described, the specific embodiments are merely interpretations of the present invention and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles and practical applications of the present invention, so that those skilled in the art can, after reading this specification, make modifications, substitutions, variations and various different selections and changes that do not make creative contributions to the embodiments as needed, but are protected by the patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A production device for a lithium-ion battery electrolyte, comprising a feeding chamber (1) and a mixing chamber (2). A solvent inlet (3) and an additive inlet (4) are provided above the feeding chamber (1). The bottom of the feeding chamber (1) and the mixing chamber (2) are connected through a lower connecting pipe (5), and the upper parts of the feeding chamber (1) and the mixing chamber (2) are connected through an upper connecting pipe (6); An electrolyte circulation pump (7) is provided on the lower connecting pipe (5), and an electrolyte outlet is provided below the mixing chamber (2), characterized in that, A sealing structure I (8) is provided in the feeding chamber (1), and a sealing structure II (9) is provided in the mixing chamber (2); the sealing structure I (8) includes a sealing piston I (801) provided in the feeding chamber (1), two inlet pipes (802) are provided at the upper end of the sealing piston I (801), the inlet pipes (802) are hollow pipes, the inner parts of the other ends of the inlet pipes (802) are respectively connected to the solvent inlet (3) or the additive and extend below the sealing piston I (801), and the inlet pipes (802) are telescopic pipes; the side surface of the sealing piston I (801) is in contact with the side wall of the feeding chamber (1); the sealing structure II (9) includes a sealing piston II (901), a rotating disk (902) is rotatably connected to the lower end of the sealing piston II (901), stirring blades (10) are fixedly connected below the rotating disk (902), a rotating shaft (903) is provided above the sealing piston II (901), the rotating shaft (903) passes through the sealing piston II (901) and is fixedly connected to the rotating disk (902), the other end of the rotating shaft (903) extends outside the mixing chamber (2) and is fixedly connected to a bevel gear I (904), a lifting platform (905) is provided below the bevel gear I (904), the lifting platform (905) is sleeved on the periphery of the rotating shaft (903) and a limiting structure (11) is provided below the lifting platform (905), a rotating motor (907) is provided above the lifting platform (905), an output shaft of the rotating motor (907) is fixedly connected to a bevel gear II (906), and the bevel gear II (906) meshes with the bevel gear I (904).
2. The production device of the lithium-ion battery electrolyte according to claim 1, characterized in that, The limiting structure (11) includes a limiting pad (1101) fixedly connected to the rotating shaft (903) and a telescopic rod (1102) fixedly connected to the lower part of the lifting platform (905), the other end of the telescopic rod (1102) is fixedly connected to the top wall of the mixing chamber (2), and the top of the limiting pad (1101) is in contact with the lifting platform (905).
3. The production device of the lithium-ion battery electrolyte according to claim 1, characterized in that The stirring blades (10) are in the shape of a triangular pyramid and are distributed in a ring below the rotating disk (902).
4. The production device of the lithium-ion battery electrolyte according to claim 1, characterized in that, Limit blocks (12) are provided below both ends of the upper connecting pipe (6), and the limit blocks (12) are respectively fixedly connected to the inner walls of the feeding chamber (1) or the mixing chamber (2).
5. The production device of the lithium-ion battery electrolyte according to claim 1, characterized in that, An air vent (13) is further provided at the top of the feeding chamber (1), and the air vent (13) is communicated with the space above the piston I in the feeding chamber (1).