Lithium extraction device

Abstract

The utility model discloses a lithium extraction device. The lithium extraction device comprises an electrolyte sheet, the anode storage device and the cathode storage device are respectively arranged on two sides of the electrolyte sheet in the thickness direction; the first fixed connecting piece is arranged on the anode material storage device, the second fixed connecting piece is arranged on the cathode material storage device, and the first fixed connecting piece and the second fixed connecting piece are connected to keep the pretightening force of the anode material storage device and the cathode material storage device on the electrolyte sheet. According to the lithium extraction device designed by the utility model, cracks of the lithium extraction device in the production process can be avoided, and cracking of a connecting part caused by large internal stress during operation of the lithium extraction device can be avoided, so that permeation of an anode material or a cathode material is avoided, and the service life of the lithium extraction device is prolonged. Meanwhile, the phenomenon that the lithium extraction device is corroded and leaked when the lithium extraction process changes, the cathode material changes and / or the anode material changes can be avoided, particularly, the production cost of the lithium extraction device can be reduced, and the production efficiency of the lithium extraction device can be improved.

Description

Technical Field

[0001] The utility model relates to the field of lithium extraction devices, in particular to a lithium extraction device. Background Art

[0002] In the related technologies, with the development of new energy technologies, electric vehicles and energy storage are important industries, and the demand for lithium is increasing year by year. The development of lithium extraction technology is particularly important. In the process of sealing the electrolyte ceramic sheet of the lithium extraction device (usually made of metal, such as stainless steel), glass sealing, molten salt sealing and other methods are mainly used. However, different materials (such as metal, glass and electrolyte ceramic sheets) produce stress due to structural differences and different expansion coefficients during the hot melt sealing process. The electrolyte ceramic sheet and the sealing material are prone to crack damage. In addition, the metal lithium extraction device is sealed as a whole. The temperature change in the operating environment of the device leads to increased internal stress, and the sealing parts are prone to cracking and leakage. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to propose a lithium extraction device. The lithium extraction device designed according to the utility model can avoid cracks in the lithium extraction device during the production process, and can avoid cracking of the connection parts due to large internal stress during the operation of the lithium extraction device, thereby avoiding the penetration of the anode material or the cathode material. At the same time, it can avoid corrosion and leakage of the lithium extraction device when the lithium extraction process changes, the cathode material changes and / or the anode material changes. In particular, it can also reduce the production cost of the lithium extraction device and improve the production efficiency of the lithium extraction device.

[0004] According to the utility model, the lithium extraction device includes: an electrolyte sheet; an anode storage device and a cathode storage device, wherein the anode storage device and the cathode storage device are respectively arranged on both sides of the electrolyte sheet in the thickness direction; a first fixed connector and a second fixed connector, wherein the first fixed connector is arranged on the anode storage device, and the second fixed connector is arranged on the cathode storage device, and the first fixed connector is connected to the second fixed connector to fix the anode storage device and the cathode storage device and maintain the pre-tightening force of the anode storage device and the cathode storage device on the electrolyte sheet.

[0005] According to the lithium extraction device of the utility model, by respectively arranging the anode storage device and the cathode storage device on both sides of the electrolyte sheet in the thickness direction, and connecting the anode storage device and the cathode storage device through the first fixed connector and the second fixed connector and fixing the electrolyte sheet in the accommodating cavity, cracks in the lithium extraction device during the production process are avoided, the production qualification rate of the lithium extraction device is improved, and cracking of the connection parts due to large internal stress during the operation of the lithium extraction device is avoided, thereby avoiding the penetration of the anode material or the cathode material, and at the same time, corrosion and leakage of the lithium extraction device can be avoided when the lithium extraction process changes, the cathode material changes and / or the anode material changes. In particular, the heating process and the cooling process of the lithium extraction device during the production process can be eliminated through the above-mentioned arrangement, the production cost of the lithium extraction device is reduced, and the production efficiency of the lithium extraction device is improved.

[0006] According to some embodiments of the utility model, the first fixed connector is configured as a first flange disposed at the end of the anode storage device, and the second fixed connector is configured as a second flange disposed at the end of the cathode storage device, and the first flange and the second flange are located on both sides of the thickness of the electrolyte sheet and are fixedly connected to each other by fasteners.

[0007] According to some embodiments of the present invention, the fastener is detachably connected to at least one of the first flange and the second flange.

[0008] According to some embodiments of the utility model, the diameter of the first flange is larger than the diameter of the anode storage device, and the first flange protrudes from the outer periphery of the anode storage device to form a first fastener connection area; the diameter of the second flange is larger than the diameter of the cathode storage device, and the second flange protrudes from the outer periphery of the cathode storage device to form a second fastener connection area; the fasteners are fixedly connected to the first fastener connection area and the second fastener connection area, respectively.

[0009] According to some embodiments of the present invention, the fasteners are configured in a plurality and are arranged at intervals in the circumferential direction to fix the first fastener connecting area and the second fastener connecting area.

[0010] According to some embodiments of the utility model, the fastener includes: a bolt, which passes through the first flange and the second flange respectively; a pre-tightening nut, which cooperates with the bolt and stops at a side of the second flange away from the first flange, and the pre-tightening nut is rotated to adjust the pre-tightening force of the anode storage device and the cathode storage device on the electrolyte sheet.

[0011] According to some embodiments of the utility model, it further includes: a locking nut, wherein the locking nut sleeve cooperates with the bolt and abuts against the pre-tightening nut.

[0012] According to some embodiments of the utility model, it also includes: a first gasket, which is arranged between the first flange and the anode storage device; and a second gasket, which is arranged between the second flange and the cathode storage device.

[0013] According to some embodiments of the present invention, the first gasket is constructed of graphite, mica or a rubber member, and the second gasket is constructed of graphite, mica or a rubber member.

[0014] According to some embodiments of the present invention, the electrolyte sheet is constructed as a ceramic piece, including but not limited to lithium lanthanum zirconium oxide (LLZO), lithium lanthanum zirconium tantalum oxide (LLZTO), lithium aluminum titanium phosphate (LATP) and lithium lanthanum titanium oxide (LLTO).

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of a lithium extraction device according to an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of a first flange plate provided with four fasteners in a lithium extraction device according to an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a first flange plate provided with 6 fasteners in a lithium extraction device according to an embodiment of the utility model.

[0020] Reference numerals: 1. lithium extraction device;

[0021] 10. Anode storage device; 20. Cathode storage device; 30. Electrolyte sheet;

[0022] 40. first flange; 41. first through hole; 50. second flange;

[0023] 61. Bolt; 62. Pre-tightening nut;

[0024] 71. First gasket; 72. Second gasket. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the related technologies, with the development of new energy technologies, electric vehicles and energy storage are important industries, and the demand for lithium is increasing year by year. The development of lithium extraction technology is particularly important. In the process of sealing the electrolyte ceramic sheet of the lithium extraction device (usually made of metal, such as stainless steel), glass sealing, molten salt sealing and other methods are mainly used. However, different materials (such as metal, glass and electrolyte ceramic sheets) produce stress due to structural differences and different expansion coefficients during the hot melt sealing process. The electrolyte ceramic sheet and the sealing material are prone to crack damage. In addition, the metal lithium extraction device is sealed as a whole. The temperature change of the operating environment of the device leads to increased internal stress. The sealing part is prone to cracking and leakage. It is difficult to replace the electrolyte sheet when it is damaged.

[0031] Reference below Figure 1-Figure 3 A lithium extraction device 1 according to an embodiment of the present invention is described.

[0032] like Figure 1-Figure 3 As shown, according to the utility model, the lithium extraction device 1 includes: an electrolyte sheet 30, an anode storage device 10, a cathode storage device 20, a first fixed connector and a second fixed connector, the anode storage device 10 and the cathode storage device 20 are respectively arranged on both sides of the electrolyte sheet 30 in the thickness direction, the first fixed connector is arranged on the anode storage device 10, and the second fixed connector is arranged on the cathode storage device 20, and the first fixed connector is connected to the second fixed connector to fix the anode storage device 10 and the cathode storage device 20 and maintain the pre-tightening force of the anode storage device 10 and the cathode storage device 20 on the electrolyte sheet 30.

[0033] In some embodiments, the anode storage device 10 is suitable for storing anode materials of lithium batteries, and the cathode storage device 20 is suitable for storing cathode materials of lithium batteries. The anode storage device 10 and the cathode storage device 20 are spaced apart from each other to define a accommodating cavity between the anode storage device 10 and the cathode storage device 20. The electrolyte sheet 30 is accommodated in the accommodating cavity, and the two sides of the electrolyte sheet 30 in the thickness direction are respectively stopped by the anode storage device 10 and the cathode storage device 20. The anode storage device 10 and the cathode storage device 20 are connected to each other and respectively form a pre-tightening force (pressure) on the electrolyte sheet 30, so that the electrolyte sheet 30 can be stably accommodated in the accommodating cavity.

[0034] Therefore, the above-mentioned arrangement can avoid the anode storage device 10, the cathode storage device 20 and the electrolyte sheet 30 from being connected by glass sealing or molten salt sealing, thereby avoiding cracks in the anode storage device 10, the cathode storage device 20 and the electrolyte sheet 30 during the connection process, thereby improving the production qualification rate of the lithium extraction device 1.

[0035] At the same time, since the anode storage device 10, the cathode storage device 20 and the electrolyte sheet 30 are constructed as separate parts, the lithium extraction device 1 is prevented from cracking at the connection part due to the large internal stress during operation, thereby preventing the anode material or the cathode material from penetrating. It is worth noting that the anode storage device 10 and the cathode storage device 20 are connected by the first fixed connector and the second fixed connector respectively, so that the connection part of the lithium extraction device 1 is located at the first fixed connector and the second fixed connector, and when the lithium extraction process changes, the cathode material changes and / or the anode material changes, it will not affect the first fixed connector and the second fixed connector, thereby avoiding the phenomenon of corrosion and leakage of the lithium extraction device 1 when the lithium extraction process changes, the cathode material changes and / or the anode material changes.

[0036] In particular, if the anode storage device, the cathode storage device and the electrolyte sheet are connected by hot melt sealing, such as molten salt sealing or glass sealing, energy consumption will be generated during the production of the lithium extraction device, increasing the production cost of the lithium extraction device, and the heating process and the cooling process are time-consuming, resulting in low production efficiency of the lithium extraction device.

[0037] Through the above-mentioned setting, the present application ensures that the lithium extraction device 1 does not generate energy consumption during the sealing process, thereby reducing the production cost of the lithium extraction device 1. At the same time, since the lithium extraction device 1 of the present application does not need to undergo a heating process and a cooling process during the sealing process, the production time of the lithium extraction device 1 of the present application is reduced, thereby improving the production efficiency of the lithium extraction device 1.

[0038] According to the lithium extraction device 1 involved in the utility model, by arranging the anode storage device 10 and the cathode storage device 20 on both sides of the electrolyte sheet 30 in the thickness direction, and connecting the anode storage device 10 and the cathode storage device 20 through the first fixed connector and the second fixed connector and fixing the electrolyte sheet 30 in the accommodating cavity, cracks in the lithium extraction device 1 during the production process are avoided, the production qualification rate of the lithium extraction device 1 is improved, and cracking of the connection parts due to the large internal stress during the operation of the lithium extraction device 1 is avoided, thereby avoiding the penetration of the anode material or the cathode material, and at the same time, it can avoid the corrosion and leakage of the lithium extraction device 1 when the lithium extraction process changes, the cathode material changes and / or the anode material changes. In particular, the above-mentioned arrangement can cancel the heating process and the cooling process of the lithium extraction device 1 during the production process, reduce the production cost of the lithium extraction device 1, and improve the production efficiency of the lithium extraction device 1.

[0039] According to some embodiments of the present invention, Figure 1-Figure 3As shown, the first fixed connector is constructed as a first flange 40 arranged at the end of the anode storage device 10, and the second fixed connector is constructed as a second flange 50 arranged at the end of the cathode storage device 20. The first flange 40 and the second flange 50 are on both sides of the thickness of the electrolyte sheet 30 and are fixedly connected to each other by fasteners.

[0040] In some embodiments, a first flange 40 is provided at the end of the anode storage device 10 near the cathode storage device 20, and a second flange 50 is provided at the end of the cathode storage device 20 near the anode storage device 10. The first flange 40 and the second flange 50 are fixed by fasteners to connect the anode storage device 10 and the cathode storage device 20. At the same time, by adjusting the tightness of the fasteners to apply a pre-tightening force (pressure) to the electrolyte sheet 30, the disassembly of the electrolyte sheet 30 is facilitated. The above-mentioned arrangement makes it easier to disassemble and assemble the electrolyte sheet 30, the anode storage device 10 and the cathode storage device 20, thereby improving the production efficiency of the lithium extraction device 1.

[0041] At the same time, when one or more of the anode storage device 10, the cathode storage device 20 and the electrolyte sheet 30 are damaged, it is only necessary to disassemble the fasteners and replace the corresponding anode storage device 10, the cathode storage device 20 or the electrolyte sheet 30, thereby reducing the maintenance cost of the lithium extraction device 1. It is worth noting that the materials of the first flange 40 and the second flange 50 include but are not limited to stainless steel, ceramics or other metal non-metal materials.

[0042] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the fastener is detachably connected to at least one of the first flange 40 and the second flange 50. In some embodiments, one end of the fastener is connected to the first flange 40, and the other end of the fastener is detachably connected to the second flange 50; in other embodiments, one end of the fastener is connected to the second flange 50, and the other end of the fastener is detachably connected to the first flange 40; in other embodiments, both ends of the fastener are detachably connected to the first flange 40 and the second flange 50, respectively, which is not limited here.

[0043] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the diameter of the first flange 40 is larger than the diameter of the anode storage device, and the first flange 40 protrudes from the outer periphery of the anode storage device 10 to form a first fastener connection area; the diameter of the second flange 50 is larger than the diameter of the cathode storage device, and the second flange 50 protrudes from the outer periphery of the cathode storage device 20 to form a second fastener connection area; the fasteners are fixedly connected to the first fastener connection area and the second fastener connection area, respectively.

[0044] In some embodiments, the diameter of the first flange 40 is greater than the diameter of the anode storage device 10, and the first flange 40 is disposed behind the end of the anode storage device 10, and the portion of the first flange 40 protruding from the anode storage device 10 is configured as a first fastener connection area.

[0045] The diameter of the second flange 50 is greater than the diameter of the cathode storage device 20, and the second flange 50 is arranged behind the end of the cathode storage device 20. The portion of the second flange 50 protruding from the cathode storage device 20 is configured as a second fastener connection area, and the two ends of the fastener are respectively suitable for connecting the first fastener connection area with the second fastener connection area to connect the first flange 40 with the second flange 50. Thus, through the above arrangement, when the two ends of the fastener are respectively connected to the first fastener connection area and the second fastener connection area, the anode storage device 10 and the cathode storage device 20 cannot affect the assembly of the fastener, thereby improving the assembly efficiency of the fastener, thereby improving the assembly efficiency of the lithium extraction device 1.

[0046] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the fasteners are configured as a plurality of fasteners and are arranged at intervals in the circumferential direction to fix the first fastener connection area and the second fastener connection area. It can be understood that the plurality of fasteners are arranged at intervals in the circumferential direction, so that the first fastener connection area and the second fastener connection area form a plurality of fixing positions in the circumferential direction, thereby making the connection between the first flange 40 and the second flange 50 more stable. It is worth mentioning that the fasteners can be configured as 4, 6, 8 or other numbers, which are not limited here.

[0047] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the fastener includes: a bolt 61 and a pre-tightening nut 62, the bolt 61 passes through the first flange 40 and the second flange 50 respectively, the pre-tightening nut 62 cooperates with the bolt 61 and stops at the side of the second flange 50 away from the first flange 40, and the pre-tightening nut 62 is rotated to adjust the pre-tightening force of the anode storage device 10 and the cathode storage device 20 on the electrolyte sheet 30.

[0048] In some embodiments, a first through hole 41 is provided on the first flange 40, and a second through hole is provided on the second flange 50. The bolt 61 includes a nut and a screw rod provided at one end of the nut in the thickness direction. The end face of one end of the screw rod provided on the nut stops against the end face of the first flange 40 facing away from the second flange 50. The screw rod passes through the first through hole 41 and the second through hole in sequence and is threadedly connected with a pre-tightening nut 62 provided on the side of the second flange 50 facing away from the first flange 40 to connect and fix the first flange 40 with the second flange 50. At the same time, the pre-tightening force of the first flange 40 and the second flange 50 can be adjusted by rotating the pre-tightening nut 62, thereby adjusting the pre-tightening force of the anode storage device 10 and the cathode storage device 20 on the electrolyte sheet 30, and the adjustment method of the pre-tightening force of the electrolyte sheet 30 is more convenient.

[0049] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the lithium extraction device 1 further includes: a locking nut, the locking nut sleeve cooperates with the bolt 61 and abuts against the pre-tightening nut 62. It can be understood that a locking nut is also provided at one end of the screw away from the nut, the locking nut is threadedly connected with the screw and abuts against the pre-tightening nut, and the pre-tightening nut cooperates with the locking nut to prevent the pre-tightening nut 62 from loosening, thereby preventing the first flange 40 and the second flange 50 from loosening, and further preventing the electrolyte sheet 30 from leaving the accommodating cavity.

[0050] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the lithium extraction device 1 further includes: a first gasket 71 and a second gasket 72 , wherein the first gasket 71 is disposed between the first flange 40 and the electrolyte sheet 30 , and the second gasket 72 is disposed between the second flange 50 and the electrolyte sheet 30 .

[0051] In some embodiments, a first gasket 71 is provided between the first flange 40 and the electrolyte sheet 30, and the first gasket 71 can buffer the stress between the first flange 40 and the electrolyte sheet 30, and avoid the first flange 40 and the electrolyte sheet 30 being pressed hard and causing damage to each other, and a second gasket 72 is provided between the second flange 50 and the electrolyte sheet 30, and the second gasket 72 can buffer the stress between the second flange 50 and the electrolyte sheet 30, and avoid the second flange 50 and the electrolyte sheet 30 being pressed hard and causing damage to each other. It is worth noting that the materials of the first gasket 71 and the second gasket 72 include but are not limited to graphite, mica, asbestos, ceramic fiber, etc.

[0052] Preferably, a third gasket is arranged between the first flange 40 and the anode storage device 10, and a fourth gasket is arranged between the second flange 50 and the cathode storage device 20. The materials of the third gasket and the fourth gasket include but are not limited to stainless steel, ceramic or other metal non-metallic materials, and the specifications of the third gasket and the fourth gasket match the first flange 40 and the second flange 50, respectively.

[0053] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the first gasket 71 is constructed of graphite, mica or rubber, and the second gasket 72 is constructed of graphite, mica or rubber. In some embodiments, the first gasket 71 and the second gasket 72 can be constructed of graphite, mica or rubber, respectively, without limitation. Preferably, the first gasket 71 and the second gasket 72 can be constructed of graphite or mica, respectively. The graphite material is resistant to high temperature and corrosion, has better compression resistance than rubber sealing materials, and is slightly more flexible than hard sealing materials. It has a good sealing effect and can also play a buffering role when the electrolyte sheet 30 is pressed, avoiding damage to the ceramic sheet caused by hard pressing; the mica material is resistant to high temperature (long-term working temperature 550°-850°) and has good performance in rapid temperature changes and stable acid and alkali chemical resistance.

[0054] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the electrolyte sheet 30 is constructed as a ceramic piece, and the material of the electrolyte sheet 30 includes but is not limited to lithium lanthanum zirconium oxide (LLZO), lithium lanthanum zirconium tantalum oxide (LLZTO), lithium aluminum titanium phosphate (LATP) and lithium lanthanum titanium oxide (LLTO).

[0055] In some embodiments, the diameter of the electrolyte sheet 30 is 2 cm, the gasket is made of graphite, the cathode storage device 20, the anode storage device 10, the first flange 40, and the second flange 50 are made of 304 stainless steel, which are assembled into a lithium extraction device 1 and the leakage rate is tested. At this time, the leakage rate of the lithium extraction device 1 is 4.2×10 -10 pam 3 / s; when the lithium extraction device 1 is used, lithium saturated molten salt (lithium chloride and potassium chloride) is added to the cathode storage device 20, and when heated to a molten state at 400°, there is no leakage during operation. It is worth mentioning that after 6 days, there is no molten salt infiltration and seepage in the first gasket 71 and the second gasket 72, and the outer contour has no obvious change.

[0056] In some other embodiments, the diameter of the electrolyte sheet 30 is 9 cm, the gasket is made of graphite, the cathode storage device 20, the anode storage device 10, the first flange 40, and the second flange 50 are made of 304 stainless steel, which are assembled into a lithium extraction device 1 and the leakage rate is tested. At this time, the leakage rate of the lithium extraction device 1 is 3.2×10 -8 pam 3 / s; when used, lithium saturated molten salt (lithium chloride and potassium chloride) is added to the cathode storage area, heated to 400° molten state and operated without leakage. After 6 days, there is no molten salt infiltration and seepage in the first gasket 71 and the second gasket 72, and the outer contour does not change significantly.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0058] Although embodiments of the present invention have been shown and described above, changes, modifications, substitutions and variations may be made to the embodiments described above.

Claims

1. A lithium extraction device, characterized in that: include: Electrolyte tablets; An anode material storage device and a cathode material storage device, wherein the anode material storage device and the cathode material storage device are respectively arranged on two sides of the electrolyte sheet in the thickness direction; A first fixed connector and a second fixed connector, wherein the first fixed connector is arranged on the anode storage device, and the second fixed connector is arranged on the cathode storage device, and the first fixed connector is connected to the second fixed connector to fix the anode storage device and the cathode storage device and maintain the pre-tightening force of the anode storage device and the cathode storage device on the electrolyte sheet.

2. The lithium extraction device according to claim 1, characterized in that: The first fixed connector is configured as a first flange disposed at the end of the anode storage device, and the second fixed connector is configured as a second flange disposed at the end of the cathode storage device. The first flange and the second flange are located on both sides of the thickness of the electrolyte sheet and are fixedly connected to each other by fasteners.

3. The lithium extraction device according to claim 2, characterized in that: The fastener is detachably connected to at least one of the first flange and the second flange.

4. The lithium extraction device according to claim 2, characterized in that: The diameter of the first flange is greater than the diameter of the anode storage device, and the first flange protrudes from the outer periphery of the anode storage device to form a first fastener connection area; The diameter of the second flange is greater than the diameter of the cathode storage device, and the second flange protrudes from the outer periphery of the cathode storage device to form a second fastener connection area; The fasteners are fixedly connected to the first fastener connection area and the second fastener connection area respectively.

5. The lithium extraction device according to claim 4, characterized in that: The fasteners are configured in plural numbers and are arranged at intervals in the circumferential direction to fix the first fastener connecting area and the second fastener connecting area.

6. The lithium extraction device according to claim 4, characterized in that: The fastener comprises: Bolts, the bolts respectively passing through the first flange and the second flange; A pre-tightening nut is matched with the bolt and abutted against a side of the second flange away from the first flange, and the pre-tightening nut is rotated to adjust the pre-tightening force of the anode storage device and the cathode storage device on the electrolyte sheet.

7. The lithium extraction device according to claim 6, characterized in that: Also includes: A locking nut, wherein the locking nut sleeve cooperates with the bolt and stops against the pre-tightening nut.

8. The lithium extraction device according to claim 2, characterized in that: Also includes: A first gasket, the first gasket is arranged between the first flange and the anode storage device; A second gasket is arranged between the second flange and the cathode storage device.

9. The lithium extraction device according to claim 8, characterized in that: The first gasket is constructed of graphite, mica or a rubber piece, and the second gasket is constructed of graphite, mica or a rubber piece.

10. The lithium extraction device according to any one of claims 1 to 9, characterized in that: The electrolyte sheet is configured as a ceramic part.

Images