Stirring device for preparing electrolyte

Abstract

The utility model relates to a stirring device for preparing electrolyte. The stirring device comprises a vertically arranged shell, the stirring assembly comprises a spraying assembly and a turning assembly which are arranged in series, the spraying assembly comprises a hollow rotating shaft and a sleeve, a plurality of spraying openings are formed in the lower portion of the hollow rotating shaft and located in the shell, and high-pressure nozzles used for spraying liquid towards the inner wall of the shell are arranged at the spraying openings; the turning assembly comprises a rotating shaft and at least one turning paddle; and the temperature adjusting assembly is used for adjusting the temperature of the electrolyte in the shell. The device is suitable for the conditions that operation in a pilot line or laboratory glove box is limited and mass configuration is difficult to realize, and meanwhile, the technical problem that temperature, moisture and oxygen content are difficult to accurately control in the configuration process is solved. The device realizes uniform mixing of a solid additive, a lithium salt and a solvent, effectively prevents a solid material from adhering to a wall, and has a self-cleaning function, so that the preparation efficiency and quality of an electrolyte are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolyte preparation, in particular to a stirring device for preparing electrolyte. Background Art

[0002] As one of the four core components of lithium-ion batteries, electrolyte preparation requires extremely stringent environmental conditions, particularly controlling moisture and oxygen content to prevent the formation of harmful substances such as free acid, thereby ensuring uncompromising battery performance. Currently, electrolyte preparation in the laboratory or production environment primarily involves two methods: small-scale preparation in a controlled environment using a glove box, or outsourcing to a large electrolyte manufacturer. Specifically, for electrolyte volumes under 20 kg, a laboratory glove box provides a relatively closed and controlled environment, meeting preparation requirements. However, when the preparation volume exceeds this threshold, glove boxes present challenges. First, space constraints make it difficult to prepare large quantities of electrolyte in a single operation, forcing batch processing and reducing production efficiency. Second, the limited operating space not only hinders ease of use but also restricts the use of large or heavy equipment, increasing the difficulty and frequency of manual handling, and thus compromising the stability of the water-oxygen environment. Frequent opening of the glove box window to add or remove materials further exacerbates this problem, making it difficult to maintain the ideal low-water-oxygen environment within the box. Furthermore, the water and oxygen levels within the glove box are directly affected by the electrolyte and its dissolved additives, leading to increased water and oxygen content, further threatening the quality of the electrolyte. Furthermore, another challenge in the electrolyte preparation process is that solid additives and lithium salts easily adhere to the inner wall, making uniform mixing difficult, which directly affects the performance of the electrolyte. Therefore, developing a stirring device for electrolyte preparation that can address the current issues of space limitations, environmental control difficulties, and mixing uniformity during electrolyte preparation is an urgent issue that needs to be addressed. Utility Model Content

[0003] In response to the problems existing in the prior art, the present utility model aims to provide a stirring device for preparing electrolytes, comprising a housing and a stirring assembly. The stirring assembly comprises a spray assembly and a tumbling assembly arranged in series. The spray assembly and tumbling assembly achieve uniform mixing of solid additives, lithium salts, and solvents, effectively preventing solid materials from sticking to the wall. The device also provides a self-cleaning function, thereby improving the efficiency and quality of electrolyte preparation. This device is suitable for use in pilot lines or laboratory glove boxes where access is limited and large-scale preparation is difficult. It also addresses the technical challenges of precisely controlling temperature, moisture, and oxygen content during preparation.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A stirring device for preparing an electrolyte, comprising: a vertically arranged shell, a feed port for receiving a solid material and an air inlet for receiving an inert gas, and an exhaust port for discharging the inert gas, arranged at the upper portion of the shell; a discharge port for discharging the electrolyte, arranged at the bottom of the shell; a stirring assembly, the stirring assembly comprising a spray assembly and a flip assembly arranged in series, wherein the spray assembly is located above the flip assembly and is rotatable, the spray assembly comprising a hollow rotating shaft and a sleeve, the upper end of the hollow rotating shaft is rotatably located in an axial hole formed in the top of the shell, and the sleeve is fixed in the The top of the shell is rotatably connected to the hollow rotating shaft, the side wall of the sleeve is provided with a first liquid inlet for receiving liquid, the side wall of the hollow rotating shaft is provided with a second liquid inlet connected to the first liquid inlet, and the lower part of the hollow rotating shaft is provided with a plurality of spray ports, and the spray ports are provided with high-pressure nozzles for spraying liquid toward the inner wall of the shell; the flipping assembly includes a rotating shaft and at least one flipping blade, the upper end of the rotating shaft is fixed to the lower end of the hollow rotating shaft, and the flipping blade extends from the rotating shaft toward the side wall of the shell at a certain angle; a temperature control assembly, which is used to adjust the temperature of the electrolyte in the shell.

[0006] Furthermore, a rolling bearing is configured inside the sleeve, and the rolling bearing is mounted on the hollow rotating shaft. A liquid inlet cavity is defined between the bottom of the rolling bearing and the sleeve. The top of the sleeve has an opening, and a removable cover at the opening is provided with a bearing pressure cover, and the bearing pressure cover abuts against the top of the rolling bearing and has a through hole for receiving the hollow rotating shaft.

[0007] Furthermore, the rolling bearing includes an inner ring, an outer ring and a plurality of rolling elements. The inner ring is fixedly connected to the outer wall of the hollow shaft, and the outer ring is fixedly connected to the inner wall of the sleeve. The outer surface of the inner ring is provided with an inner raceway, and the inner surface of the outer ring is correspondingly provided with an outer raceway. The inner raceway and the outer raceway together form a rolling channel, and the plurality of rolling elements are slidably mounted in the rolling channel.

[0008] Furthermore, a sealing ring is arranged between the through hole and the hollow rotating shaft, and a sealing ring is arranged between the bottom of the sleeve and the hollow rotating shaft.

[0009] Furthermore, a motor for driving the hollow shaft to rotate is disposed at the upper end of the hollow shaft, and the motor is fixed to the top of the shell through a bracket.

[0010] Furthermore, the temperature control component includes a spiral coil arranged on the circumferential wall of the shell, one end of the spiral coil is provided with a medium inlet for introducing a heat exchange medium, and the other end of the spiral coil is provided with a medium outlet for discharging the heat exchange medium, and the outside of the spiral coil is provided with an insulation layer.

[0011] Furthermore, the discharge port is connected to the first liquid inlet through a pipeline, and a delivery pump is provided on the pipeline between the discharge port and the first liquid inlet.

[0012] Furthermore, the bottom of the shell also includes a support assembly, and the support assembly enables the shell to be a certain distance away from the ground, so that there is a certain space between the shell and the ground.

[0013] Furthermore, a pressure gauge for monitoring the internal pressure of the shell is disposed on the top of the shell, and a thermometer for monitoring the internal temperature of the shell is disposed on the side of the shell.

[0014] Furthermore, the inert gas is any one of nitrogen, argon, helium or neon.

[0015] The utility model has the following advantages:

[0016] 1. The stirring device of this utility model achieves efficient mixing of the solvent, solid additives, and lithium salts through a series arrangement of a spray assembly and a tumbling assembly. The spray assembly utilizes a high-pressure nozzle to spray the solvent toward the inner wall of the housing, creating a liquid impact and dispersion effect. This not only ensures the complete dissolution and mixing of the materials in the electrolyte, but also effectively cleans any residual solid material from the inner wall of the housing, preventing wall sticking. The tumbling assembly, on the other hand, stirs and agitates the electrolyte through its tumbling blades, ensuring even distribution of the solid material within the electrolyte and improving mixing efficiency and uniformity.

[0017] 2. The stirring device of the present invention is suitable for pilot lines and laboratory environments, and has the advantages of simple operation and small footprint. Compared with the traditional tedious preparation operations in the glove box, this device does not need to frequently enter and exit the glove box, which greatly simplifies the operation process. At the same time, it has relatively low space requirements and can be flexibly arranged in the laboratory area without being constrained by the narrow space of the glove box. In addition, compared to purchasing electrolyte from the electrolyte factory, this device is not only more economical, but also can greatly shorten the production cycle of the electrolyte, avoiding the additional costs brought by long-distance transportation and the price increase problem of the electrolyte factory when configuring a small amount of products, providing a more efficient and economical electrolyte preparation solution for laboratories and pilot lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the stirring device for preparing electrolyte of the present invention.

[0019] Figure 2 It is a three-dimensional cutaway view of a stirring device for preparing electrolyte according to the present invention.

[0020] Figure 3It is a schematic diagram of the three-dimensional structure of a stirring device for preparing electrolyte with a hidden thermal insulation layer of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the stirring assembly of the present utility model.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the spray assembly of the present utility model.

[0023] Figure 6 It is a three-dimensional exploded view of the spray assembly of the present utility model.

[0024] Figure 7 It is a cross-sectional view of the spray assembly of the present utility model.

[0025] Among them, 1 is the shell, 101 is the feed port, 102 is the air inlet, 103 is the exhaust port, 104 is the discharge port, 105 is the shaft hole, 2 is the stirring component, 201 is the spray component, 201a is the sleeve, 201a1 is the first liquid inlet, 201a2 is the liquid inlet cavity, 201a3 is the opening, 201b is the hollow shaft, 201b1 is the second liquid inlet, 201b2 is the spray port, 201b3 is the high-pressure nozzle, 201c is the rolling bearing, 201c1 is the inner ring, 201c2 is the outer ring, 201c3 is the rolling element, 201d is the bearing cover, 201d1 is the through hole, 201e is the sealing ring, 202 is the flipping assembly, 202a is the rotating shaft, 202b is the flipping blade, 3 is the temperature adjustment assembly, 301 is the spiral coil, 301a is the medium inlet, 301b is the medium outlet, 302 is the insulation layer, 4 is the support assembly, 5 is the motor, 501 is the bracket, 6 is the liquid inlet pipe, 7 is the pressure gauge, and 8 is the thermometer. DETAILED DESCRIPTION

[0026] The following description is essentially only exemplary and is not intended to limit the present invention, its application, or use. It will be further understood that the terms "comprise" and / or "comprising" specify the existence of the features, wholes, steps, operations, elements and / or parts described when used in this specification, but do not exclude the existence of one or more other features, wholes, steps, operations, elements, parts and / or their groups or add one or more other features, wholes, steps, operations, elements, parts and / or their groups. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that when an element, component and / or part is referred to as "connected to another element, component and / or part", it can be directly connected to another element, component and / or part, or there can be an intermediate element. It will be understood that although the terms "first", "second" and the like can be used to describe various elements, components and / or parts in this article, these elements, components and / or parts should not be limited by these terms. These terms are only used to distinguish an element, component or part from another element, component or part. Therefore, the first element, component or part discussed below can be referred to as the second element, component or part without departing from the teachings of the present invention. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant field and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0027] It should be understood that, in order to clearly show the contents therein, the drawings herein are not drawn to scale, and the same or similar reference numerals indicate the same or similar components or parts. In addition, it should be understood that any embodiments described in this application and the technical features included therein can be combined with each other.

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] like Figure 1-3As shown, a stirring device for preparing electrolyte includes a vertically arranged shell 1, a stirring component 2 and a temperature control component 3. A feed port 101 for receiving solid materials and an air inlet 102 for receiving inert gas are provided on the upper part of the shell 1, as well as an exhaust port 103 for discharging inert gas. A discharge port 104 for discharging electrolyte is provided at the bottom of the shell 1. The number of feed ports 101 can be configured according to the type of reagent, or only one feed port 101 can be provided to add different reagents in sequence. The discharge port 104 can be connected to a quick connector for sampling and subpackaging electrolyte. The discharge port 104 can be equipped with a ball valve or a sampling device according to the convenience of the operator to increase the convenience of preparation. The housing 1 is generally cylindrical in shape, comprising a body with an upper cover on top and a tapered bottom. A feed port 101, an air inlet 102, and an exhaust port 103 are all located on the upper cover, while the exhaust port 103 is located at the bottom of the tapered bottom. In an embodiment not shown, a liquid inlet is also provided at the top of the housing 1 to accommodate other liquid additives.

[0030] like Figure 2-7As shown, the stirring assembly 2 includes a spray assembly 201 and a flip assembly 202 arranged in series, wherein the spray assembly 201 is located above the flip assembly 202 and is rotatable, and the spray assembly 201 includes a hollow rotating shaft 201b and a sleeve 201a, the upper end of the hollow rotating shaft 201b is rotatably located in the shaft hole 105 formed on the top of the shell 1, and the shaft hole 105 is located on the central axis of the shell 1. The hollow rotating shaft 201b enters the interior of the shell 1 through the shaft hole 105 and extends downward for a certain length. The sleeve 201a is fixed to the top of the shell 1 and is connected to the hollow rotating shaft 201b. 1b is rotatably connected, that is, the sleeve 201a is fixedly arranged on the top of the shell 1, the hollow rotating shaft 201b passes through the sleeve 201a and rotates relative to it, and the side wall of the sleeve 201a is provided with a first liquid inlet 201a1 for receiving liquid, and the first liquid inlet 201a1 is located in the upper middle part of the side wall of the sleeve 201a. The first liquid inlet 201a1 is externally connected to the liquid inlet pipe 6, and the liquid inlet pipe 6 is connected to the external liquid pressurizing equipment. Driven by the external pressurizing equipment, the liquid can flow smoothly into the internal space of the sleeve 201a from the first liquid inlet 201a1. The side wall of the hollow rotating shaft 201b is provided with a second liquid inlet connected to the first liquid inlet 201a1, and the second liquid inlet 201b1 rotates with the rotation of the hollow rotating shaft 201b, wherein the shape of the second liquid inlet 201b1 can be circular, square, spiral, etc., and the number of the second liquid inlet 201b1 can be one, two, four, etc., which can be configured according to actual needs. A plurality of spray ports 201b2 are provided at the lower portion of the hollow rotating shaft 201b, and a high-pressure nozzle 201b3 is configured at the spray port 201b2 for spraying liquid toward the inner wall of the shell 1. In this embodiment, the number of the spray ports 201b2 is four, and the four spray ports 201b2 are on the same horizontal plane. The four spray ports 201b2 are arranged at a certain interval along the circumferential direction of the hollow rotating shaft 201b, and the angle formed by two adjacent spray ports 201b2 is 90 degrees. Each spray port 201b2 is equipped with a high-pressure nozzle 201b3. These nozzles are usually horizontally embedded in the spray port 201b2, but can also be adjusted to a specific spray angle, as long as it is ensured that the liquid can be accurately sprayed toward the inner wall of the shell 1. The number of spray ports 201b2 can be configured as needed. For example, eight spray ports 201b2 are configured to form two layers of spray groups, four in each layer, to further improve the spraying efficiency, and the high-pressure nozzle 201b3 can be a spiral nozzle, a flat nozzle, etc. The spraying liquid is a solvent in the electrolyte, or a cleaning liquid used to clean the housing 1. When in use, the liquid first enters the sleeve 201a through the first liquid inlet 201a1, and then enters the hollow shaft 201b through the second liquid inlet 201b1.Under the rotation of the hollow rotating shaft 201b, the spray port 201b2 and the high-pressure nozzle 201b3 also rotate accordingly. After the liquid flows through the spray port 201b2, it is sprayed from the high-pressure nozzle 201b3 into the interior of the housing 1 in a rotating manner. This dynamic spraying process not only enhances the mixing effect of the liquid, but also effectively cleans and flushes the inner wall of the housing 1, preventing solid materials from adhering to the wall. The turning assembly 202 includes a rotating shaft 202a and at least one turning blade 202b. The upper end of the rotating shaft 202a is fixed to the lower end of the hollow rotating shaft 201b. The turning blade 202b extends from the rotating shaft 202a at a certain angle toward the side wall of the housing 1. The rotating shaft 202a and the hollow rotating shaft 201b are fixedly connected by a flange. The rotating shaft 202a is a solid shaft, and the hollow rotating shaft 201b is a hollow structure. They are not connected to each other. In this embodiment, there are two flipping blades 202b, which are arranged on the rotating shaft 202a at a certain interval. Each flipping blade 202b has four sub-blades, and the four sub-blades are twisted in the same direction at a certain angle, thereby achieving effective flipping and mixing of the liquid inside the shell 1.

[0031] like Figure 6 and Figure 7 As shown, a rolling bearing 201c is disposed within sleeve 201a. Rolling bearing 201c is mounted on hollow shaft 201b. A liquid inlet chamber 201a2 is defined between the bottom of rolling bearing 201c and sleeve 201a, providing the necessary space and passage for liquid to flow in. Sleeve 201a has an opening 201a3 at the top, and a removable bearing cover 201d is provided at opening 201a3. Bearing cover 201d abuts the top of rolling bearing 201c and has a through hole 201d1 for receiving hollow shaft 201b. Bearing cover 201d not only acts as a seal but also, through its abutment against the top of rolling bearing 201c, ensures the stable operation of rolling bearing 201c. Rolling bearing 201c includes an inner ring 201c1, an outer ring 201c2, and multiple rolling elements 201c3. Inner ring 201c1 is fixedly connected to the outer wall of hollow shaft 201b, while outer ring 201c2 is fixedly connected to the inner wall of sleeve 201a. An inner raceway is defined on the outer surface of inner ring 201c1, while an outer raceway is defined on the inner surface of outer ring 201c2. Together, these two raceways form a rolling channel, within which multiple rolling elements 201c3 are slidably mounted. Rolling bearing 201c can be a ceramic bearing.

[0032] like Figure 7 As shown, a sealing ring 201e is disposed between the through hole 201d1 and the hollow rotating shaft 201b, and a sealing ring 201e is disposed between the bottom of the sleeve 201a and the hollow rotating shaft 201b to prevent leakage of liquid.

[0033] like Figure 1-3As shown, the upper end of the hollow shaft 201b is provided with a motor 5 for driving the hollow shaft 201b to rotate. The motor 5 is fixed to the top of the shell 1 through a bracket 501. The middle part of the bracket 501 has a driving port for receiving the hollow shaft 201b. Driven by the motor 5, the hollow shaft 201b can rotate smoothly, thereby driving the spray component 201 and the flip component 202 to work together, thereby realizing efficient mixing and spraying of solvents, additives and lithium salts.

[0034] In an embodiment not shown, the discharge port 104 is connected to the first liquid inlet 201a1 through a pipeline, and a delivery pump (not shown in the figure) is provided on the pipeline between the discharge port 104 and the first liquid inlet 201a1, which circulates part of the prepared electrolyte to the spray assembly 201 through the pipeline and re-sprays it into the interior of the shell 1 to be re-mixed with the electrolyte raw material to be mixed.

[0035] like Figure 1 and Figure 3 As shown, the temperature control component 3 is used to adjust the temperature of the electrolyte in the shell 1. The temperature control component 3 includes a spiral coil 301 arranged on the circumferential wall of the shell 1. One end of the spiral coil 301 is provided with a medium inlet 301a for introducing a heat exchange medium and the other end of the spiral coil 301 is provided with a medium outlet 301b for discharging the heat exchange medium. The medium inlet 301a and the medium outlet 301b are respectively connected to an external chiller. When these heat exchange media flow in the spiral coil 301, they can fully absorb heat, thereby achieving the regulation of the electrolyte temperature. The heat exchange medium is mainly a coolant. The spiral shape of the spiral coil 301 not only increases the heat exchange area, but also improves the heat exchange efficiency. The outside of the spiral coil 301 is covered with an insulation layer 302. The insulation layer 302 is made of heat-insulating material, which can effectively prevent heat loss and ensure that the heat exchange medium can fully exchange heat with the electrolyte when flowing in the spiral coil 301 without being disturbed by the external environment.

[0036] like Figure 1-3 As shown, the bottom of the housing 1 also includes a support assembly 4, which raises the housing 1 a certain distance from the ground to create a certain space between the housing 1 and the ground. In this embodiment, the support assembly 4 includes four support legs, which are arranged at regular intervals at the bottom of the housing 1. These support legs raise the housing 1 a certain distance from the ground, facilitate the discharge of electrolyte from the discharge port 104 at the bottom of the housing 1, and prevent the device from shifting and other safety hazards. The number of support legs can be configured as needed, for example, three, five, six, etc.

[0037] like Figure 1 and Figure 2 As shown, a pressure gauge 7 for monitoring the internal pressure of the housing 1 is disposed on the top of the housing 1 , and a thermometer 8 for monitoring the internal temperature of the housing 1 is disposed on the side of the housing 1 .

[0038] Among them, the inert gas is any one of nitrogen, argon, helium or neon, preferably nitrogen. The air inlet 102 is connected to the inert gas pipeline interface. The inert gas enters the shell 1 through the air inlet 102 to discharge other gases inside the shell 1 from the exhaust port 103 to control the "water oxygen environment and pressure" in the shell 1. The staff can control the pressure in the shell 1 through the pressure gauge 7 to ensure that the pressure is within a safe and effective range.

[0039] Among them, the electrolyte includes solvents, additives and lithium salts. The solvent is sprayed into the interior of the shell 1 by the spray component 201, and the additives and lithium salt solvent enter from the feed port 101 on the top of the shell 1. The solvent can be a carbonate or carboxylate, etc. The additive can be a film-forming additive, a conductive additive, a flame retardant additive, an overcharge protection additive, an additive to control the H2O and HF content in the electrolyte, an additive to improve low-temperature performance or a multifunctional additive, etc. The lithium salt can be lithium hexafluorophosphate (LiPF6), lithium perchlorate (LiClO4), lithium tetrafluoroborate (LiBF4) or lithium fluorosulfonyl imide (LiFSI), etc.

[0040] Based on the above-mentioned stirring device for preparing electrolyte, when in use, inert gas is introduced into the shell 1 through the air inlet 102, and other gases in the shell 1 are discharged through the exhaust port 103 until an oxygen-free environment is achieved. The solvent is pumped from the first liquid inlet 201a1 into the liquid inlet chamber 201a2 in the sleeve 201a through an external pressure device. The solvent enters the hollow rotating shaft 201b through the second liquid inlet 201b1 and is sprayed out from the high-pressure nozzle 201b3 of the spray port 201b2, spraying evenly inside the shell 1. The feed port 101 is opened, and the additives and lithium salts are added to the shell 1 according to the formula ratio. The motor 5 is started to drive the high-pressure nozzle 201b3 and the flipping blade 202b to rotate, and the solvent is rotated and sprayed into the shell 1 to ensure that the solid material and the solvent are fully mixed and to clean the solid material that may be adhered to the inner wall of the shell 1. When adding the solvent, it is necessary to introduce the heat exchange medium through the medium inlet 301a of the spiral coil 301, adjust the temperature of the electrolyte in the shell 1, monitor the reading of the thermometer 8, and ensure that the electrolyte temperature remains within the set range. Continue stirring until the electrolyte reaches a uniform state and the temperature, pressure and other indicators meet the requirements. Turn off the motor 5, pressure pump and other equipment, open the discharge port 104, and discharge the prepared electrolyte. When the electrolyte inside the shell 1 is emptied, connect the cleaning liquid to the spray assembly 201, start the motor 5 again, and rotate the cleaning liquid to spray into the inside of the shell 1 to clean the shell 1.

[0041] In general, the stirring device of the present invention achieves efficient mixing of solvent, solid additives and lithium salts through the spray component and the turning component arranged in series. The spray component uses a high-pressure nozzle to spray the solvent toward the inner wall of the shell, forming a liquid impact and dispersion effect, which not only ensures the full dissolution and mixing of the material in the electrolyte, but also effectively cleans the residual solid material on the inner wall of the shell to prevent the occurrence of wall sticking. The turning component turns and stirs the electrolyte through the turning blades to ensure that the solid material is evenly distributed in the electrolyte, thereby improving the mixing efficiency and uniformity. The stirring device of the present invention is suitable for pilot lines and laboratory environments, and has the advantages of simple operation and small footprint. Compared with the traditional tedious preparation operations carried out in the glove box, this device does not require frequent entry and exit of the glove box, which greatly simplifies the operation process. At the same time, it has relatively low space requirements and can be flexibly arranged in the laboratory area without being constrained by the narrow space of the glove box. In addition, compared with purchasing electrolyte from an electrolyte factory, this device is not only more economical, but can also greatly shorten the production cycle of the electrolyte, avoiding the additional costs brought by long-distance transportation and the price increase of the electrolyte factory when configuring a small amount of products, providing a more efficient and economical electrolyte preparation solution for laboratories and pilot lines.

[0042] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A stirring device for preparing an electrolyte, characterized in that: include: A vertically arranged shell, a feed port for receiving solid materials and an air inlet for receiving inert gas, and an exhaust port for exhausting inert gas, provided on the upper portion of the shell; a discharge port provided at the bottom of the housing for discharging the electrolyte; A stirring assembly, the stirring assembly comprising a spray assembly and a flip assembly arranged in series, wherein: The spray assembly is located above the flip assembly and is rotatable. The spray assembly includes a hollow rotating shaft and a sleeve. The upper end of the hollow rotating shaft is rotatably located in an axial hole formed on the top of the shell. The sleeve is fixed to the top of the shell and is rotatably connected to the hollow rotating shaft. The side wall of the sleeve is provided with a first liquid inlet for receiving liquid, and the side wall of the hollow rotating shaft is provided with a second liquid inlet connected to the first liquid inlet. The lower part of the hollow rotating shaft is provided with a plurality of spray ports, and the spray ports are provided with high-pressure nozzles for spraying liquid toward the inner wall of the shell; The flip assembly includes a rotating shaft and at least one flip blade, the upper end of the rotating shaft is fixed to the lower end of the hollow rotating shaft, and the flip blade extends from the rotating shaft toward the side wall of the housing at a certain angle; A temperature regulating component is used to regulate the temperature of the electrolyte in the shell.

2. A stirring device for preparing an electrolyte according to claim 1, characterized in that: A rolling bearing is arranged inside the sleeve, and the rolling bearing is mounted on the hollow rotating shaft. A liquid inlet cavity is defined between the bottom of the rolling bearing and the sleeve. The top of the sleeve has an opening, and a removable cover at the opening is provided with a bearing pressure cover. The bearing pressure cover abuts against the top of the rolling bearing and has a through hole for receiving the hollow rotating shaft.

3. A stirring device for preparing an electrolyte according to claim 2, characterized in that: The rolling bearing includes an inner ring, an outer ring and multiple rolling elements. The inner ring is fixedly connected to the outer wall of the hollow shaft, and the outer ring is fixedly connected to the inner wall of the sleeve. The outer surface of the inner ring is provided with an inner raceway, and the inner surface of the outer ring is correspondingly provided with an outer raceway. The inner raceway and the outer raceway together form a rolling channel, and the multiple rolling elements are slidably fitted in the rolling channel.

4. A stirring device for preparing an electrolyte according to claim 2, characterized in that: A sealing ring is arranged between the through hole and the hollow rotating shaft, and a sealing ring is arranged between the bottom of the sleeve and the hollow rotating shaft.

5. The stirring device for preparing electrolyte according to claim 1, characterized in that: The upper end of the hollow rotating shaft is provided with a motor for driving the hollow rotating shaft to rotate, and the motor is fixed to the top of the shell through a bracket.

6. A stirring device for preparing an electrolyte according to claim 1, characterized in that: The temperature control component includes a spiral coil arranged on the circumferential wall of the shell, one end of the spiral coil is provided with a medium inlet for introducing a heat exchange medium, and the other end of the spiral coil is provided with a medium outlet for discharging the heat exchange medium, and the outside of the spiral coil is provided with an insulation layer.

7. A stirring device for preparing an electrolyte according to claim 1, characterized in that: The discharge port is connected to the first liquid inlet through a pipeline, and a delivery pump is provided on the pipeline between the discharge port and the first liquid inlet.

8. The stirring device for preparing electrolyte according to claim 1, characterized in that: The bottom of the shell further comprises a support assembly, which enables the shell to be separated from the ground by a certain distance so as to have a certain space between the shell and the ground.

9. A stirring device for preparing an electrolyte according to claim 1, characterized in that: A pressure gauge for monitoring the internal pressure of the housing is disposed on the top of the housing, and a thermometer for monitoring the internal temperature of the housing is disposed on the side of the housing.

10. The stirring device for preparing electrolyte according to claim 1, characterized in that: The inert gas is any one of nitrogen, argon, helium or neon.

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