Mixing equipment for preparing fire-retardant electrolyte

Abstract

This utility model discloses a mixing device for preparing flame-retardant electrolyte, relating to the field of electrolyte preparation technology. It includes a mixing tank with a lid screwed onto its top. A servo motor is fixedly mounted on the lid. A stirring shaft is installed inside the mixing tank, and stirring blades are fixedly mounted on the outside of the stirring shaft. A second control valve is fixedly mounted at the lower end of the mixing tank. An inert gas storage tank is fixedly mounted on one side of the mixing tank, and a connecting pipe is installed above the inert gas storage tank. A third control valve is sealed on the connecting pipe. This mixing device, by setting multiple layers of inclined stirring blades, can fully stir materials at different levels within the mixing tank, greatly improving the uniformity of material mixing. By introducing inert gas into the mixing tank, combustion and explosion during the mixing process are effectively prevented, improving the safety of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of electrolyte preparation technology, specifically a mixing device for preparing flame-retardant electrolyte. Background Technology

[0002] Flame-retardant electrolytes are functional electrolytes that enhance the safety of lithium-ion batteries by adding special flame retardants or using flame-retardant solvents. Their core function is to inhibit combustion chain reactions and prevent the battery from catching fire or exploding under abusive conditions such as high temperatures, overcharging, or short circuits. Mixing is a crucial step in the preparation of flame-retardant electrolytes, as its mixing effect directly affects the electrolyte's performance.

[0003] Chinese Patent Publication No. CN220425117U, authorized on February 2, 2024, discloses an electrolyte mixing device, relating to the field of electrolyte mixing technology. It solves the technical problems of current electrolyte mixing processes, where continuous addition of electrolyte to the mixing tank leads to overflow and waste, and the accumulation of electrolyte during drainage. The device includes a mixing tank with a sealing cover on top, an anti-accumulation platform fixedly installed inside, and a waterproof sleeve fixedly installed at the bottom of the sealing cover. This invention automatically stops adding electrolyte when a certain amount is reached, and features supporting springs fixedly installed on both sides of the drain pipe via spring plates, ensuring contact between the sealing gasket and the sealing sleeve, thereby stopping drainage during mixing. Conversely, pressing the drain pipe allows for rapid drainage of the mixed electrolyte.

[0004] Existing mixing equipment uses a single stirring blade for mixing. Due to the fixed stirring angle and speed, the materials are not mixed evenly, which affects the stability of the electrolyte performance. During the mixing process, chemical reactions of the materials or external environmental influences can easily lead to safety accidents such as fires or even explosions, reducing the mixing effect and failing to meet the usage requirements. Utility Model Content

[0005] The purpose of this invention is to provide a mixing device for preparing flame-retardant electrolyte, so as to solve the problems mentioned in the background art (the main shortcomings).

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mixing device for preparing flame-retardant electrolyte, comprising a mixing tank, a tank cover mounted on the top of the mixing tank by screws, a servo motor fixedly mounted on the top of the tank cover, a stirring shaft installed inside the mixing tank, the upper end of the stirring shaft connected to the output end of the servo motor, stirring blades fixedly mounted on the outside of the stirring shaft, the stirring blades being inclined, a second control valve fixedly mounted on the lower end of the mixing tank, the second control valve communicating with the bottom of the mixing tank, an inert gas storage tank fixedly mounted on one side of the mixing tank, a connecting pipe mounted on the top of the inert gas storage tank, the two ends of the connecting pipe communicating with the mixing tank and the inert gas storage tank respectively, and a third control valve sealed on the connecting pipe.

[0007] Preferably, a breathable membrane is fixedly installed on the inner side of the mixing tank, and the breathable membrane is installed on one side of the connecting pipe.

[0008] Preferably, a feeding cylinder is fixedly installed through the top of the can lid, a filling tank is installed above the feeding cylinder, and a first control valve is fixedly installed at the lower end of the filling tank, and the first control valve is plugged into the feeding cylinder.

[0009] Preferably, the upper end of the feeding cylinder is provided with an installation groove, and a filter cylinder is movably installed inside the installation groove.

[0010] Preferably, a silicone strip is fixedly installed on one side of the stirring blade, and the cross-section of the silicone strip is triangular.

[0011] Preferably, three support frames are fixedly installed on the lower part of the outside of the mixing tank, and the three support frames are equidistantly arranged on the outside of the mixing tank, and an elastic fixing plate is fixedly installed on the lower end of the support frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model device, through the setting of a servo motor, stirring shaft, stirring blade, silicone strip, inert gas storage tank, connecting pipe, third control valve and breathable membrane, drives the stirring shaft and stirring blade to rotate synchronously. The rotating stirring blade stirs and mixes the raw materials. During the mixing process, the third control valve is opened to inject inert gas from the inert gas storage tank into the mixing tank through the connecting pipe, so that the mixing tank is in an inert gas environment to prevent combustion and explosion. The breathable membrane can prevent flame-retardant electrolyte from entering the inert gas storage tank from the connecting pipe. The silicone strip moves along the inner wall of the mixing tank with the rotation of the stirring blade, scraping off the flame-retardant electrolyte adhering to the inner wall of the mixing tank and reducing waste.

[0014] 2. This utility model device, through the setting of a feeding cylinder, a filling tank, a first control valve and a filter cylinder, opens the first control valve to inject the preparation raw materials stored in the filling tank into the feeding cylinder, and the filter cylinder filters the raw materials injected into the feeding cylinder to filter out impurities, ensuring the purity of the materials entering the mixing tank and improving the quality of the flame retardant electrolyte. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a structural diagram of the stirring mechanism of this utility model;

[0017] Figure 3 This is a diagram showing the connection relationship between the filling tank and the feeding cylinder of this utility model;

[0018] Figure 4 This diagram shows the connection relationship between the inert gas storage tank and the mixing tank of this utility model.

[0019] In the diagram: 1. Mixing tank; 2. Tank cover; 3. Servo motor; 4. Feeding cylinder; 5. Filling tank; 6. First control valve; 7. Second control valve; 8. Support frame; 9. Elastic fixing plate; 10. Inert gas storage tank; 11. Connecting pipe; 12. Third control valve; 13. Stirring shaft; 14. Stirring blade; 15. Silicone hanger; 16. Mounting groove; 17. Filter cartridge; 18. Breathable membrane. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-4 An embodiment of this utility model provides a mixing device for preparing flame-retardant electrolyte, including a mixing tank 1, a tank cover 2 installed on the top of the mixing tank 1 by screws, a servo motor 3 fixedly installed on the top of the tank cover 2, a stirring shaft 13 installed inside the mixing tank 1, the upper end of the stirring shaft 13 being connected to the output end of the servo motor 3, a stirring blade 14 fixedly installed on the outside of the stirring shaft 13, and the stirring blade 14 being inclined, a second control valve 7 fixedly installed at the lower end of the mixing tank 1, and the second control valve 7 being connected to the bottom of the mixing tank 1, an inert gas storage tank 10 fixedly installed on one side of the mixing tank 1, a connecting pipe 11 installed above the inert gas storage tank 10, and the two ends of the connecting pipe 11 being connected to the mixing tank 1 and the inert gas storage tank 10 respectively, a third control valve 12 being sealed and installed on the connecting pipe 11, and a breathable membrane 18 fixedly installed inside the mixing tank 1, and the breathable membrane 18 being installed on one side of the connecting pipe 11.

[0022] In use: Add the raw materials to the mixing tank 1, turn on the servo motor 3 to drive the stirring shaft 13 and stirring blade 14 to rotate synchronously. The rotating stirring blade 14 stirs and mixes the raw materials. During the mixing process, open the third control valve 12 to inject the inert gas in the inert gas storage tank 10 into the mixing tank 1 through the connecting pipe 11, so that the mixing tank 1 is in an inert gas environment to prevent combustion and explosion. After the mixing is completed, open the second control valve 7 to discharge the prepared flame-retardant electrolyte.

[0023] Please see Figure 1 and Figure 3 A feeding cylinder 4 is fixedly installed above the can lid 2. A filling tank 5 is installed above the feeding cylinder 4. A first control valve 6 is fixedly installed at the lower end of the filling tank 5 and is inserted into the feeding cylinder 4. An installation groove 16 is provided inside the upper end of the feeding cylinder 4. A filter cylinder 17 is movably installed inside the installation groove 16. When the first control valve 6 is opened, the preparation raw materials stored in the filling tank 5 are injected into the feeding cylinder 4. The filter cylinder 17 filters the raw materials injected into the feeding cylinder 4, filtering out impurities in the raw materials, ensuring the purity of the materials entering the mixing tank, and improving the quality of the flame-retardant electrolyte.

[0024] Please see Figure 2 A silicone hanging strip 15 is fixedly installed on one side of the stirring blade 14. The cross-section of the silicone hanging strip 15 is triangular. As the stirring blade 14 rotates, the silicone hanging strip 15 moves along the inner wall of the mixing tank 1, scraping off the flame-retardant electrolyte adhering to the inner wall of the mixing tank 1, thus reducing waste.

[0025] Please see Figure 1 Three support frames 8 are fixedly installed on the lower part of the outside of the mixing tank 1, and the three support frames 8 are equidistantly arranged on the outside of the mixing tank 1. An elastic fixing plate 9 is fixedly installed on the lower end of the support frame 8. The support frame 8 and the elastic fixing plate 9 constitute a support structure to support the mixing equipment and also play an effective role in shock absorption, thereby improving the operating stability of the mixing equipment.

[0026] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing device for preparing a fire-retardant electrolyte solution, comprising a mixing tank (1), characterized in that: A lid (2) is screwed on the top of the mixing tank (1). A servo motor (3) is fixedly installed on the top of the lid (2). A stirring shaft (13) is installed inside the mixing tank (1), and the upper end of the stirring shaft (13) is connected to the output end of the servo motor (3). A stirring blade (14) is fixedly installed on the outside of the stirring shaft (13), and the stirring blade (14) is inclined. A second control valve (7) is fixedly installed at the lower end of the mixing tank (1), and the second control valve (7) is connected to the bottom of the mixing tank (1). An inert gas storage tank (10) is fixedly installed on one side of the mixing tank (1). A connecting pipe (11) is installed on the top of the inert gas storage tank (10), and the two ends of the connecting pipe (11) are connected to the mixing tank (1) and the inert gas storage tank (10) respectively. A third control valve (12) is sealed on the connecting pipe (11).

2. The mixing device for preparing a fire-retardant electrolyte solution according to claim 1, wherein: A breathable membrane (18) is fixedly installed on the inner side of the mixing tank (1), and the breathable membrane (18) is installed on one side of the connecting pipe (11).

3. A mixing device for preparing a fire-retardant electrolyte solution according to claim 1, characterized in that: A feeding cylinder (4) is fixedly installed above the can cover (2), and a filling tank (5) is installed above the feeding cylinder (4). A first control valve (6) is fixedly installed at the lower end of the filling tank (5), and the first control valve (6) is inserted into the feeding cylinder (4).

4. The mixing device for preparing a fire-retardant electrolyte solution according to claim 3, wherein: The upper end of the feeding cylinder (4) is provided with an installation groove (16), and a filter cylinder (17) is movably installed inside the installation groove (16).

5. The mixing device for preparing a fire-retardant electrolyte solution according to claim 1, wherein: A silicone hanging strip (15) is fixedly installed on one side of the stirring blade (14), and the cross-section of the silicone hanging strip (15) is triangular.

6. A mixing device for preparing a fire-retardant electrolyte solution according to claim 1, wherein: Three support frames (8) are fixedly installed on the lower part of the outside of the mixing tank (1), and the three support frames (8) are equidistantly arranged on the outside of the mixing tank (1). An elastic fixing plate (9) is fixedly installed on the lower end of the support frame (8).

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