Configuration device suitable for small-batch electrolyte

Abstract

The utility model discloses a configuration device suitable for small-batch electrolyte, which comprises a configuration kettle and a glove box positioned above the configuration kettle, the upper end part of the configuration kettle is respectively provided with a solid material feed port, a liquid material feed port and a nitrogen injection interface, and the bottom of the configuration kettle is provided with a discharge port; wherein the solid material inlet is connected with a charging hopper of the glove box; a spraying head is inserted into the liquid material inlet, and a rotary spraying ball is arranged in the spraying head; the discharge hole is sequentially connected with a magnetic filter and a liquid filter; according to the utility model, a small batch of electrolyte with various formulas can be efficiently prepared in a short time, the material loss is low, the rinsing time is short, and the flexibility and adaptability are stronger.

Description

Technical Field

[0001] The utility model belongs to the field of preparation of lithium ion battery electrolytes, and particularly relates to a configuration device suitable for small-batch electrolytes. Background Art

[0002] At present, electrolytes are prepared through an electrolyte production line. The existing electrolyte production line mainly consists of a raw material supply device, a premixing kettle, a configuration kettle, a vacuum tube system, a normal-temperature low-pressure nitrogen gas pipe system, a coolant system, and a vent pipe system. Among them, at the premixing kettle stage, after the required solvents are fed according to requirements, stirring is started for mixing, and the lower expansion valve is opened to sample from the sampling port for inspection. After passing the inspection, it is pressed into the configuration kettle. However, through actual use, it is found that this production line is suitable for configuring large batches of electrolytes, and a large amount of electrolytes will be wasted when configuring small batches of electrolytes, and the configuration requirements for medium and small batches of electrolytes cannot be met.

[0003] Therefore, the applicant hopes to propose a technical solution to optimize the electrolyte configuration device to meet the requirement of being able to configure small batches of electrolytes with different formulas in a short time and improve the configuration efficiency. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to provide a configuration device suitable for small-batch electrolytes, which can efficiently configure small batches of electrolytes with multiple formulas in a short time, with less material loss, short flushing time, and stronger flexibility and adaptability.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A configuration device suitable for small-batch electrolytes includes a configuration kettle and a glove box located above the configuration kettle. The upper end of the configuration kettle is respectively provided with a solid material feed port, a liquid material feed port, and a nitrogen injection interface, and the bottom of the configuration kettle is provided with a discharge port; wherein,

[0007] The solid material feed port is connected to the feeding funnel of the glove box;

[0008] The liquid material feed port is inserted with a spray head, and a rotating spray ball is arranged inside the spray head;

[0009] The discharge port is sequentially connected to a magnetic filter and a liquid filter.

[0010] Preferably, the glove box is provided with a nitrogen injection interface, so that the glove box and the configuration kettle operate in a nitrogen atmosphere.

[0011] Preferably, the feeding funnel is connected to the solid material feed port through an internally polished metal short pipe.

[0012] Preferably, a semi-closed ball valve is connected to the internally polished metal short pipe.

[0013] Preferably, a jacket is provided on the outer periphery of the configuration kettle, wherein a liquid inlet is provided at the lower end of the jacket, and a liquid outlet is provided at the lower end of the jacket, and a refrigeration device is connected between the liquid inlet and the liquid outlet via a pipeline.

[0014] Preferably, the refrigerant of the refrigeration device is a propylene glycol aqueous solution.

[0015] Preferably, an agitator is disposed at the upper end of the configuration kettle, wherein a stirring paddle of the agitator extends into the interior of the configuration kettle.

[0016] Preferably, the stirring paddle is a four-blade stirring paddle.

[0017] Preferably, a sampling port is provided at the upper end of the configuration kettle, wherein the sampling port is configured as a closed sampling form, and sampling and testing can be performed through the sampling port.

[0018] Preferably, the outlet end of the liquid filter is connected to the finished electrolyte tank.

[0019] The configuration device provided by the utility model can inject solvent into the configuration kettle through the liquid material feed port during the configuration process, and protect the configuration kettle by injecting nitrogen into the configuration kettle; at the same time, the solid lithium salt required for electrolyte configuration is packaged through the glove box, and after the packaging is completed, the material can be added through the solid material feed port. Since the feeding funnel of the glove box is connected to the configuration kettle, the loss of lithium salt hanging on the wall during the addition process can be greatly reduced, and the quality of the electrolyte can be improved; and the liquid material feed port can perform solvent rinse on the feeding funnel of the glove box after the electrolyte configuration is completed, so that the rinsing process is more rigorous and the configuration quality of the electrolyte is guaranteed; the configuration device provided by the utility model can efficiently configure small batches of electrolytes with multiple formulas in a short time, with less material loss, short rinsing time, and stronger flexibility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structural connection of a small batch electrolyte configuration device according to a specific implementation method of the utility model.

[0021] Figure numerals: configuration kettle 1; jacket 11; liquid inlet 12; liquid outlet 13; glove box 2; feeding funnel 21; internally polished metal short pipe 22; agitator 3; stirring paddle 31; magnetic filter 4; liquid filter 5; electrolyte finished product tank 6. DETAILED DESCRIPTION

[0022] This embodiment provides a configuration device suitable for small - batch electrolytes, including a configuration kettle and a glove box located above the configuration kettle. The upper part of the configuration kettle is respectively provided with a solid material feed port, a liquid material feed port, and a nitrogen injection interface, and the bottom of the configuration kettle is provided with a discharge port; among them, the solid material feed port is connected to the feeding funnel of the glove box; the liquid material feed port is inserted with a spray head, and a rotating spray ball is arranged inside the spray head; the discharge port is sequentially connected to a magnetic filter and a liquid filter.

[0023] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model 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.

[0024] Please refer to Figure 1 As shown, a configuration device suitable for small - batch electrolytes includes a configuration kettle 1 and a glove box 2 located above the configuration kettle 1. The upper part of the configuration kettle 1 is respectively provided with a solid material feed port, a liquid material feed port, and a nitrogen injection interface, and the bottom of the configuration kettle 1 is provided with a discharge port; among them, the solid material feed port is connected to the feeding funnel 21 of the glove box 2. Preferably, in this embodiment, the feeding funnel 21 is connected to the solid material feed port through an internally polished metal short pipe 22 (in this embodiment, the material is specifically made of stainless steel of model 316L), which can significantly reduce the loss of lithium salt sticking to the wall during the addition process and improve the quality of the electrolyte; further preferably, in order to control the feeding speed of the solid lithium salt, in this embodiment, a semi - closed ball valve is connected to the internally polished metal short pipe 22.

[0025] Preferably, in this embodiment, the glove box 2 is provided with a nitrogen injection interface, so that the glove box 2 and the configuration kettle 1 operate in a nitrogen atmosphere; further preferably, in this embodiment, the nitrogen used in the configuration kettle 1 and the glove box 2 is treated by a nitrogen filter before use to avoid mechanical impurities contaminating the configuration materials of the electrolyte.

[0026] In this embodiment, the liquid material feed port is inserted with a spray head, and a rotating spray ball is arranged inside the spray head. When implemented, after the electrolyte configuration is completed, the solvent is injected into the configuration kettle 1 through the spray head, and the solvent splashes towards the inner wall of the kettle all around under the action of the built - in rotating spray ball, achieving an efficient cleaning effect.

[0027] Preferably, in the present embodiment, a jacket 11 is provided on the outer periphery of the mixing kettle 1. Among them, a liquid inlet 12 is provided at the lower end of the jacket 11 (cooling water provided by the refrigeration device is injected through the liquid inlet 12), and a liquid outlet 13 is provided at the lower end of the jacket 11 (the water is conveyed to the refrigeration device for treatment through the liquid outlet 13). The refrigeration device is connected between the liquid inlet 12 and the liquid outlet 13 through a pipeline. Specifically and preferably, in the present embodiment, the refrigerant of the refrigeration device adopts an aqueous solution of propylene glycol; injecting cooling water can rapidly cool down the mixing kettle 1, shorten the mixing time, and avoid the influence of the ambient temperature on the electrolyte;

[0028] In order to achieve sufficient fusion of the solvent and the lithium salt in the mixing kettle 1 and make the electrolyte mix more evenly, preferably, in the present embodiment, a stirrer 3 is arranged at the upper end of the mixing kettle 1. Among them, the stirring paddle 31 of the stirrer 3 extends into the interior of the mixing kettle 1; specifically and preferably, in the present embodiment, the stirring paddle 31 adopts a four-blade stirring paddle.

[0029] In the present embodiment, the discharge port is sequentially connected to a magnetic filter 4 and a liquid filter 5. Preferably, the outlet end of the liquid filter 5 is connected to an electrolyte finished product tank 6; during the implementation work, when the mixing kettle 1 discharges materials through the discharge port, the materials are first processed by the magnetic filter 4 through the discharge pipeline below the kettle body under the action of nitrogen, and the possible metal impurities are adsorbed and then pass through the liquid filter 5. The insoluble matters are removed under the action of the filter element of the liquid filter 5 to ensure the quality of the electrolyte;

[0030] Preferably, in the present embodiment, a sampling port is arranged at the upper end of the mixing kettle 1. Among them, the sampling port is set in a closed sampling form, and sampling and detection can be carried out through the sampling port.

[0031] During the mixing process of the mixing device provided in this embodiment, a solvent can be injected into the mixing kettle 1 through the liquid material inlet, and nitrogen is injected into the mixing kettle 1 for protection; at the same time, the glove box 2 is used to package the solid lithium salt required for electrolyte mixing. After the packaging is completed, feeding can be carried out through the solid material inlet. Since the feeding funnel 21 of the glove box 2 is connected to the mixing kettle 1, the loss of lithium salt hanging on the wall during the addition process can be greatly reduced, and the quality of the electrolyte can be improved; and the liquid material inlet can rinse the feeding funnel 21 of the glove box 2 with the solvent after the electrolyte mixing is completed, making the rinsing process more rigorous and ensuring the mixing quality of the electrolyte.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An apparatus for preparing electrolyte suitable for small batches, characterized in that It includes a configuration kettle and a glove box located above the configuration kettle. The upper end of the configuration kettle is respectively provided with a solid material inlet, a liquid material inlet, and a nitrogen injection interface, and the bottom of the configuration kettle is provided with an outlet; among them, The solid material inlet is connected to the feeding funnel of the glove box; The liquid material inlet is inserted with a spray head, and a rotating spray ball is arranged inside the spray head; The outlet is sequentially connected to a magnetic filter and a liquid filter.

2. The configuration device for small-batch electrolytes according to claim 1, characterized in that, The glove box is provided with a nitrogen injection interface, so that the glove box and the configuration kettle are operated in a nitrogen atmosphere.

3. The configuration device suitable for small-batch electrolytes according to claim 1, wherein The feeding funnel is connected to the solid material inlet through an internally polished metal short pipe.

4. The configuration device for small-batch electrolytes according to claim 3, characterized in that A semi-closed ball valve is connected to the internally polished metal short pipe.

5. The configuration device for small-batch electrolytes according to claim 1, characterized in that A jacket is arranged on the outer periphery of the configuration kettle. Among them, a liquid inlet is arranged at the lower end of the jacket, and a liquid outlet is arranged at the lower end of the jacket. A refrigeration device is connected between the liquid inlet and the liquid outlet through a pipeline.

6. The configuration device for small-batch electrolyte according to claim 5, characterized in that, The refrigerant of the refrigeration device adopts an aqueous solution of propylene glycol.

7. The configuration device for small-batch electrolyte according to claim 1, characterized in that, A stirrer is arranged at the upper end of the configuration kettle. Among them, the stirring paddle of the stirrer extends into the interior of the configuration kettle.

8. The configuration device for small-batch electrolyte according to claim 7, characterized in that, The stirring paddle adopts a four-blade stirring paddle.

9. The configuration device suitable for small-batch electrolyte according to claim 1, characterized in that, A sampling port is arranged at the upper end of the configuration kettle. Among them, the sampling port is set in a closed sampling form, and sampling detection can be carried out through the sampling port.

10. The configuration device for small-batch electrolyte according to claim 1, characterized in that, The outlet end of the liquid filter is connected to an electrolyte finished product tank.

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