Lithium metal electrolytic cell

Abstract

The utility model provides a metal lithium electrolytic bath and belongs to the technical field of electrolytic baths. Comprising a base, a tank body is fixed to the base, an electrolytic tank cavity and a communicating tank cavity are formed in the tank body, the electrolytic tank cavity is communicated with the bottom of the communicating tank cavity to form a U-shaped communicating vessel, an anode is arranged in the middle of the interior of the electrolytic tank cavity, and a cathode is arranged around the anode in the electrolytic tank cavity. A communicating groove cavity is formed in the upper end face of the groove body, a liquid level window is arranged on the side face of the communicating groove cavity, an input pipe is installed in the communicating groove cavity, the top end of the input pipe extends out of the upper end face of the groove body, and a slag discharging pipe is connected to the bottom of the communicating groove cavity. The U-shaped communicating vessel is formed by the electrolytic cell cavity and the communicating cell cavity, so that electrolyte in the electrolytic cell cavity can be conveniently and quickly replaced through the communicating cell cavity, high-intensity current can be supported to pass through by optimizing the structure of the electric row, a good heat dissipation effect is ensured, long-time high-current work is facilitated, and the electrolytic efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to a metal lithium electrolytic cell. Background Art

[0002] A lithium metal electrolyzer is a device used to extract lithium metal by electrolysis. During the electrolysis process, lithium ions move in the electrolyte solution and form a current between the anode and the cathode, thereby achieving a reduction reaction of lithium ions to generate lithium metal.

[0003] At present, in the prior art, a Chinese patent with publication number CN207749191U discloses a metal lithium electrolytic cell, which includes a cathode, an anode and a cell body, wherein the anode is vertically inserted into the cell body and is conductively connected to an anode conductive bar, the cathode is placed in the cell body and arranged around the anode, a refractory brick layer is laid above the bottom of the cell body, the refractory brick layer supports the anode, the cathode is conductively fixedly connected to the inner wall of the cell body, the outer wall of the cell body is conductively connected to a cathode conductive bar, and the cathode conductive bar is conductively connected to the cathode through the cell body. The device protects the cell body and the cathode during the electrolysis process by conductively connecting the cathode to the cell body, effectively avoiding corrosion of the cell body; at the same time, the anode is directly supported on the refractory brick layer, thereby extending the service life of the anode and shortening the assembly time of the anode.

[0004] However, when the prior art is actually used, after a long period of electrolysis, the lithium ions in the electrolyte will gradually decrease, thereby affecting the subsequent output of metallic lithium. At this time, it is necessary to stop the machine and replace the electrolyte, which is not conducive to long-term continuous production and thus affects production efficiency. In addition, the conductive bar structure in the existing electrolytic cell is too simple to support the heat dissipation requirements of long-term power supply with high-intensity current, which also affects the electrolysis efficiency.

[0005] Therefore, the present application provides a metal lithium electrolytic cell to solve the above technical problems. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a metal lithium electrolytic cell to solve the problems that the existing electrolytic cell is inconvenient to quickly replace the electrolyte and the conductive bar thereof cannot support high-intensity current to work for a long time.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A metal lithium electrolytic cell, comprising a base, a cell body fixed on the base, an electrolytic cell cavity and a connecting cell cavity provided in the cell body, the electrolytic cell cavity being connected to the bottom of the connecting cell cavity to form a U-shaped communicating vessel, an anode being provided in the middle of the electrolytic cell cavity, a cathode being provided in the electrolytic cell cavity surrounding the anode, a liquid level window being provided on the side of the connecting cell cavity, an input pipe being installed in the connecting cell cavity, the top end of the input pipe extending out of the upper end surface of the cell body, and a slag discharge pipe being connected to the bottom of the connecting cell cavity;

[0009] The anode and the cathode are respectively connected to a positive conductive bar and a negative conductive bar, which extend from the side of the tank body, and the side of the tank body is fixed with a protection box covering the positive conductive bar and the negative conductive bar, and a heat dissipation air pump is installed on the top of the protection box.

[0010] Optionally, a sealing cover is fixed to the top of the electrolytic cell cavity, and the top end of the anode passes through the middle of the sealing cover and is fixed with a fixed cover.

[0011] Optionally, a conductive ring for surrounding the top of the anode is fixed in the sealing cover, a conductive plate is fixed on one side of the conductive ring, the conductive plate is exposed from a side of the sealing cover and is butt-jointed with the anode conductive bar.

[0012] Optionally, a handle is fixed to the upper end surface of the fixed cover.

[0013] Optionally, a bracket is fixed on the inner wall of the electrolytic cell cavity, the bracket is provided with the cathode, and the side surface of the cathode is connected to the cathode conductive bar.

[0014] Optionally, a plurality of positive conductive bars are provided and arranged in parallel, and a plurality of slots are symmetrically opened on both sides of the positive conductive bars, adjacent positive conductive bars are connected through the slots to form heat dissipation holes, and the structure of the negative conductive bar is consistent with that of the positive conductive bar.

[0015] Optionally, an exhaust port is fixed to the bottom of the protection box, and a filter is laid in the exhaust port.

[0016] Optionally, refractory bricks are installed at the bottom of the tank.

[0017] Optionally, the slag discharge pipe is communicated with the inner bottom of the tank body, and a valve is provided on the slag discharge pipe.

[0018] Optionally, a partition mesh is arranged around the anode in the electrolytic cell cavity, and the partition mesh is located between the anode and the cathode.

[0019] Compared with the prior art, the utility model has at least the following beneficial effects:

[0020] In the above scheme, a U-shaped connecting vessel is formed by the electrolytic cell cavity and the connecting cell cavity, and the electrolytic production and processing of metallic lithium is carried out in the electrolytic cell cavity. An input pipe and a slag discharge pipe are arranged in the connecting cell cavity. The electrolyte in the electrolytic cell cavity can be quickly replaced through the connecting cell cavity. There is no need to disassemble the device to stop the machine to replace the electrolyte, which is easy to use.

[0021] By optimizing the structure of the anode conductive bar and setting slots on the anode conductive bar, when multiple anode conductive bars are used in parallel to support high-intensity current, heat dissipation holes can be formed through the butted slots, and the setting of a protection box and an exhaust port can be combined to ensure the heat dissipation effect of the bar, which is beneficial to ensure that the device can work at high current for a long time, thereby improving the electrolysis efficiency.

[0022] By arranging a separator between the anode and the cathode, it is possible to prevent slag from being adsorbed onto the surface of the anode during cathode electrolysis, thereby affecting the purity of metallic lithium, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0024] FIG1 is a schematic diagram of the three-dimensional structure of a metal lithium electrolytic cell;

[0025] FIG2 is a schematic diagram of the internal structure of a metal lithium electrolytic cell;

[0026] FIG3 is a schematic diagram of the three-dimensional structure of the anode;

[0027] FIG. 4 is a schematic diagram of the three-dimensional structure of a conductive bar.

[0028] [Reference Signs]

[0029] 1. Base; 2. Tank body; 201. Electrolytic cell cavity; 202. Connecting tank cavity; 203. Liquid level window; 204. Input pipe; 205. Slag discharge pipe; 3. Refractory bricks; 4. Conductive ring; 401. Conductive plate; 5. Sealing cover; 6. Fixed cover; 601. Handle; 7. Anode; 8. Cathode; 9. Spacer; 10. Anode conductive bar; 1001. Slot; 1002. Heat dissipation hole; 11. Cathode conductive bar; 12. Protection box; 13. Heat dissipation air pump; 14. Exhaust port; 15. Filter.

[0030] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0031] The following is a detailed description of a metal lithium electrolytic cell provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0032] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0033] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0034] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0035] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0036] As shown in Figures 1 and 2, an embodiment of the utility model provides a metal lithium electrolytic cell, including a base 1, a cell body 2 is fixed on the base 1, an electrolytic cell cavity 201 and a connecting cell cavity 202 are arranged in the cell body 2, the electrolytic cell cavity 201 is connected to the bottom of the connecting cell cavity 202 to form a U-shaped communicating vessel, wherein a refractory brick 3 is fixed to the bottom of the electrolytic cell cavity 201, a sealing cover 5 is fixed to the top of the electrolytic cell cavity 201, and a liquid level window 203 is arranged on the side of the connecting cell cavity 202, and a liquid level scale is arranged on the liquid level window 203, an input pipe 204 is installed in the connecting cell cavity 202, and the top end of the input pipe 204 extends out of the upper end surface of the cell body 2, and a slag discharge pipe 205 is connected to the bottom of the connecting cell cavity 202, and a valve is arranged on the slag discharge pipe 205 to facilitate the control of sewage discharge.

[0037] In addition, as shown in Figure 3, an anode 7 is arranged in the middle of the electrolytic cell cavity 201, and a cathode 8 is arranged around the anode 7 in the electrolytic cell cavity 201. The anode 7 and the cathode 8 are respectively connected to a positive conductive bar 10 and a negative conductive bar 11. Specifically, a bracket is fixed on the inner wall of the electrolytic cell cavity 201, and the bracket is provided with the cathode 8, and the side of the cathode 8 is connected to the negative conductive bar 11.

[0038] A partition mesh 9 is also arranged around the anode 7 in the electrolytic cell cavity 201, and the partition mesh 9 is located between the anode 7 and the cathode 8. By arranging the partition mesh 9 between the anode 7 and the cathode 8, and fixing the partition mesh 9 to the lower end surface of the sealing cover 5, it is possible to prevent the slag material during the electrolysis of the cathode 8 from being adsorbed to the surface of the anode 7 and affecting the purity of the metallic lithium, thereby achieving good use effect.

[0039] Among them, the top of the anode 7 passes through the middle of the sealing cover 5 and is fixed with a fixed cover 6. A handle 601 is fixed on the upper end surface of the fixed cover 6 to facilitate the withdrawal of the anode 7, and a conductive ring 4 for surrounding the top of the anode 7 is fixed in the sealing cover 5. A conductive plate 401 is fixed on one side of the conductive ring 4. The conductive plate 401 is exposed on the side of the sealing cover 5 and is docked with the positive conductive bar 10, so that the positive conductive bar 10 is electrically connected to the anode 7 through the conductive ring 4.

[0040] As shown in Figures 2 and 4, the positive conductive bar 10 and the negative conductive bar 11 extend out from the side of the slot body 2, and the side of the slot body 2 is fixed with a protection box 12 that covers the positive conductive bar 10 and the negative conductive bar 11. A heat dissipation air pump 13 is installed on the top of the protection box 12, and an exhaust port 14 is fixed at the bottom of the protection box 12. A filter screen 15 is laid in the exhaust port 14, so that the positive conductive bar 10 and the negative conductive bar 11 can dissipate heat.

[0041] Specifically, there are multiple positive conductive bars 10 which are arranged in parallel, and multiple slots 1001 are symmetrically opened on both sides of the positive conductive bars 10. Adjacent positive conductive bars 10 are connected through the slots 1001 to form heat dissipation holes 1002, and the structure of the negative conductive bar 11 is consistent with that of the positive conductive bar 10.

[0042] The working principle provided by the utility model is that the metal lithium electrolytic cell, when in use, forms a U-shaped communicating vessel through the electrolytic cell cavity 201 and the connecting cell cavity 202, and the electrolytic production and processing of metal lithium is carried out in the electrolytic cell cavity 201, and an input pipe 204 and a slag discharge pipe 205 are arranged in the connecting cell cavity 202, so that the electrolyte in the electrolytic cell cavity 201 can be quickly replaced through the connecting cell cavity 202, and there is no need to disassemble the device to stop the device to replace the electrolyte, which is convenient to use. By optimizing the structure of the positive conductive bar 10 and the negative conductive bar 11, the slot 1001 is arranged on the positive conductive bar 10, so that multiple positive conductive bars 10 are used in parallel to support high-intensity current use, and heat dissipation holes 1002 can be formed through the butted slots 1001, and the protection box 12 and the exhaust port 14 are arranged to ensure the heat dissipation effect of the electric bar, which is conducive to ensuring that the device works at a high current for a long time to improve the electrolysis efficiency.

[0043] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A metal lithium electrolytic cell, comprising a base, on which a cell body is fixed, characterized in that: The tank body is provided with an electrolytic tank cavity and a connecting tank cavity, the electrolytic tank cavity is connected with the bottom of the connecting tank cavity to form a U-shaped communicating vessel, an anode is provided in the middle of the electrolytic tank cavity, a cathode is provided in the electrolytic tank cavity around the anode, and a liquid level window is provided on the side of the connecting tank cavity, an input pipe is installed in the connecting tank cavity, the top end of the input pipe extends out of the upper end surface of the tank body, and a slag discharge pipe is connected to the bottom of the connecting tank cavity; The anode and the cathode are respectively connected to a positive conductive bar and a negative conductive bar, the positive conductive bar and the negative conductive bar extend from the side of the tank body, and the side of the tank body is fixed with a protection box covering the positive conductive bar and the negative conductive bar, and a heat dissipation air pump is installed on the top of the protection box; There are multiple positive conductive bars arranged in parallel, and multiple slots are symmetrically opened on both sides of the positive conductive bars. Adjacent positive conductive bars are connected through the slots to form heat dissipation holes, and the structure of the negative conductive bar is consistent with that of the positive conductive bar.

2. The metal lithium electrolytic cell according to claim 1, characterized in that: A sealing cover is fixed on the top of the electrolytic cell cavity, and the top end of the anode passes through the middle of the sealing cover and is fixed with a fixed cover.

3. The metal lithium electrolytic cell according to claim 2, characterized in that: A conductive ring for surrounding the top of the anode is fixed in the sealing cover, a conductive plate is fixed on one side of the conductive ring, the conductive plate is exposed from the side of the sealing cover and is butt-jointed with the anode conductive bar.

4. The metal lithium electrolytic cell according to claim 2, characterized in that: A handle is fixed on the upper end surface of the fixed cover.

5. The metal lithium electrolytic cell according to claim 1, characterized in that: A bracket is fixed on the inner wall of the electrolytic cell cavity, the bracket is provided with the cathode, and the side surface of the cathode is connected to the cathode conductive bar.

6. The metal lithium electrolytic cell according to claim 1, characterized in that: An exhaust port is fixed at the bottom of the protection box, and a filter screen is laid in the exhaust port.

7. The metal lithium electrolytic cell according to claim 1, characterized in that: Refractory bricks are installed at the bottom of the tank.

8. The metal lithium electrolytic cell according to claim 1, characterized in that: The slag discharge pipe is communicated with the inner bottom of the tank body, and a valve is arranged on the slag discharge pipe.

9. The metal lithium electrolytic cell according to claim 1, characterized in that: A partition is arranged around the anode in the electrolytic cell cavity, and the partition is located between the anode and the cathode.

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