Electric de-intercalation partition plate, electric de-intercalation membrane stack and lithium extraction device

Abstract

The utility model discloses an electric de-intercalation partition plate, an electric de-intercalation membrane stack and a lithium extraction device, and belongs to the technical field of lithium extraction devices. The electric de-embedding partition plate comprises an outer frame and a water distribution net. The water distribution net is arranged in the inner circumferential direction of the outer frame; wherein the outer frame is provided with a flow guide hole group and a water distribution flow channel group, the water distribution flow channel group is respectively communicated with the flow guide hole group and the water distribution net, and the water distribution net and the outer frame are integrally formed. According to the electric de-embedding partition plate provided by the invention, the water distribution net and the outer frame are integrally formed, so that a gap between the water distribution net and the outer frame is extremely small or even no gap exists, feed liquid is difficult to pass through the gap between the water distribution net and the outer frame, and the feed liquid can uniformly flow through the water distribution net at the same flow speed everywhere; and the flow distribution effect is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium extraction devices, and in particular to an electro-deintercalation separator, an electro-deintercalation membrane stack and a lithium extraction device. Background Art

[0002] Lithium and lithium compounds such as lithium chloride, lithium carbonate, lithium hydroxide and organic lithium compounds are widely used in high-energy batteries, aerospace, nuclear power generation and other fields, and are of great significance to the development of my country's national economy. Lithium is the main positive electrode material of high-energy batteries and plays an important strategic role in the development of energy storage materials and clean nuclear energy. With the rapid development of science and technology and the sharp increase in energy demand, energy faces great challenges, and lithium batteries have gradually become the mainstay of the battery industry.

[0003] Salt lake lithium resources account for more than 69% of the world's industrial lithium reserves, and extracting lithium from salt lake brine has become a relatively important means of lithium extraction. The main methods for extracting lithium from brine include evaporation crystallization, precipitation, extraction, adsorption, calcination, membrane separation, electrochemical lithium extraction and other methods. Among them, electrochemical lithium extraction technology, as a new type of lithium separation and extraction technology, has the advantages of being green and environmentally friendly, high lithium extraction efficiency, and good impurity separation effect, and has received more and more attention and research.

[0004] The electrochemical lithium extraction device is composed of an electro-deintercalation membrane stack, a pressing device, a water inlet pipe and a water outlet pipe. The electro-deintercalation membrane stack is usually composed of an end plate, a guide plate, a gasket, at least one membrane stack unit, a gasket, a guide plate, and an end plate stacked in sequence. The membrane stack unit is usually composed of a separator, an electrode plate, a separator, an ion exchange membrane, a separator, an electrode plate, a separator, and an ion exchange membrane stacked in sequence. Among them, the separator usually includes an outer frame and a water distribution network. The water distribution network is arranged on the inner circumference of the outer frame. The main function of the water distribution network is to distribute liquid. The ideal liquid distribution effect is that the feed liquid flows evenly through the water distribution network at the same flow rate everywhere.

[0005] However, in order to facilitate installation, the water distribution net used in the prior art is smaller than the internal cavity of the outer frame. Therefore, there is a gap of a certain width between the water distribution net and the outer frame. This gap forms a channel with low resistance, causing part of the liquid to flow quickly through this gap, affecting the liquid distribution effect. Utility Model Content

[0006] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide an electric de-embedding partition to solve the technical problem in the prior art that there is a gap of a certain width between the water distribution network and the outer frame of the partition, causing part of the liquid to flow quickly through the gap and affecting the liquid distribution effect.

[0007] To solve the above technical problems, this application provides:

[0008] An electric de-embedding separator, comprising:

[0009] Frame;

[0010] A water distribution network, the water distribution network is arranged on the inner circumference of the outer frame;

[0011] The outer frame is provided with a guide hole group and a water distribution channel group, the water distribution channel group is connected with the guide hole group and the water distribution network respectively, and the water distribution network is integrally formed with the outer frame.

[0012] In addition, the electrical de-embedding partition according to the present application may also have the following additional technical features:

[0013] In some embodiments of the present application, the guide hole group includes a water inlet hole and a water outlet hole, and the water inlet hole and the water outlet hole are respectively arranged at two ends of the outer frame along the first direction.

[0014] In some embodiments of the present application, the water distribution channel group includes a water inlet channel and a water outlet channel, and the water inlet channel and the water outlet channel are respectively arranged at both ends of the outer frame along the first direction, and the water inlet channel is respectively connected to the water inlet hole and the water distribution network, and the water outlet channel is respectively connected to the water outlet hole and the water distribution network.

[0015] In some embodiments of the present application, at least two of the water inlet flow channels and the water outlet flow channels are provided, and there is a spacing between the two water inlet flow channels and between the two water outlet flow channels.

[0016] In some embodiments of the present application, a plurality of the water inlet holes and the water outlet holes are provided, and the plurality of the water inlet holes and the plurality of the water outlet holes are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

[0017] In some embodiments of the present application, the shapes of the water inlet hole and the water outlet hole are one or more of elliptical, semi-elliptical, circular, semi-circular, and polygonal.

[0018] In some embodiments of the present application, the outer frame is made of rubber, silicone or foam.

[0019] In a second aspect, the present application further provides an electro-deintercalation membrane stack, comprising the electro-deintercalation partition described in any of the above embodiments.

[0020] In some embodiments of the present application, the electro-deintercalation membrane stack further includes an electro-deintercalation electrode plate and an ion exchange membrane, and the electro-deintercalation separator is abutted between the electro-deintercalation electrode plate and the ion exchange membrane.

[0021] In a third aspect, the present application also provides a lithium extraction device, comprising the electro-deintercalation membrane stack described in any of the above embodiments.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] The present application proposes an electric de-embedding partition, which includes an outer frame and a water distribution network. The water distribution network is arranged on the inner circumference of the outer frame. The outer frame is provided with a guide hole group and a water distribution channel group. The water distribution channel group is respectively connected with the guide hole group and the water distribution network. The water distribution network is integrally formed with the outer frame.

[0024] By forming the water distribution net and the outer frame into one piece, the gap between the water distribution net and the outer frame is extremely small or even non-existent, making it difficult for the liquid to pass through the gap between the water distribution net and the outer frame, so that the liquid can flow through the water distribution net evenly at the same flow rate everywhere, effectively improving the flow distribution effect. This avoids the technical problem in the prior art that there is a gap of a certain width between the water distribution net of the partition and the outer frame, causing part of the liquid to flow quickly through the gap and affecting the liquid distribution effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The structure of the electric de-embedding partition in some embodiments of the present application is shown. Figure 1 ;

[0027] Figure 2 The structure of the electric de-embedding partition in some embodiments of the present application is shown. Figure 2 ;

[0028] Figure 3 A schematic diagram of an exploded view of an electro-deintercalation membrane stack in some embodiments of the present application is shown.

[0029] Description of main component symbols:

[0030] 100-electro-deintercalation baffle; 110-outer frame; 111-flow guide hole group; 1111-water inlet hole; 1112-water outlet hole; 112-water distribution channel group; 1121-water inlet channel; 1122-water outlet channel; 120-water distribution network; 1000-electro-deintercalation membrane stack; 200-electro-deintercalation electrode plate; 300-ion exchange membrane. DETAILED DESCRIPTION

[0031] The embodiments of the present application 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 application, and cannot be understood as limiting the present application.

[0032] In the description of the present application, 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", "axial", "radial", "circumferential" 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 application 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 application.

[0033] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 or an electrical connection; 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 this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Embodiment 1

[0037] like Figure 1 and Figure 2 As shown, the embodiment of the present application provides an electro-deintercalation separator 100, which is mainly used in an electro-deintercalation membrane stack 1000, and the electro-deintercalation membrane stack 1000 is mainly used in a lithium extraction device. The electro-deintercalation separator 100 includes an outer frame 110 and a water distribution network 120.

[0038] Among them, the water distribution network 120 is arranged on the inner circumference of the outer frame 110, and the outer frame 110 is provided with a guide hole group 111 and a water distribution channel group 112. The water distribution channel group 112 is respectively connected to the guide hole group 111 and the water distribution network 120, and the water distribution network 120 is integrally formed with the outer frame 110.

[0039] The electric de-embedding partition 100 provided in the embodiment of the present application is made by integrally forming the water distribution net 120 and the outer frame 110, so that the gap between the water distribution net 120 and the outer frame 110 is extremely small or even non-existent, making it difficult for the liquid to pass through the gap between the water distribution net 120 and the outer frame 110, thereby allowing the liquid to flow through the water distribution net 120 uniformly at the same flow rate everywhere, effectively improving the flow distribution effect. The technical problem that there is a gap of a certain width between the water distribution net and the outer frame of the partition in the prior art, causing part of the liquid to flow quickly through the gap and affecting the liquid distribution effect, is avoided.

[0040] Exemplarily, the water distribution net 120 and the outer frame 110 can be integrally formed by a thermoforming process.

[0041] The outer frame 110 can select a suitable material according to the actual slurry situation. For example, the outer frame 110 can be made of rubber, silicone, foam and the like by way of example but not limitation, so as to better adapt to different actual working conditions and expand the scope of application.

[0042] The water distribution net 120 can select appropriate materials according to the actual slurry conditions. For example, the water distribution net 120 can be exemplarily but not limitatively made of PP, PVC, PE, PTFE, silicone, nylon, TPU, EVA and other materials to better adapt to different actual working conditions and expand the scope of application.

[0043] like Figure 1 and Figure 2 As shown, in one embodiment of the present application, optionally, the guide hole group 111 includes a water inlet hole 1111 and a water outlet hole 1112, and the water inlet hole 1111 and the water outlet hole 1112 are respectively arranged at two ends of the outer frame 110 along the first direction.

[0044] In some embodiments, the water inlet 1111 may be disposed at a lower portion of the outer frame 110 , and the water outlet 1112 may be disposed at an upper portion of the outer frame 110 .

[0045] In other embodiments, the water inlet 1111 may be disposed at an upper portion of the outer frame 110 , and the water outlet 1112 may be disposed at a relatively lower portion of the outer frame 110 .

[0046] It should be noted that the first direction corresponds to Figure 1 and Figure 2 The X direction in .

[0047] like Figure 1 and Figure 2 As shown, in the above-mentioned embodiment of the present application, optionally, the water distribution channel group 112 includes a water inlet channel 1121 and a water outlet channel 1122, and the water inlet channel 1121 and the water outlet channel 1122 are respectively arranged at the two ends of the outer frame 110 along the first direction, and the water inlet channel 1121 is respectively connected to the water inlet hole 1111 and the water distribution network 120, and the water outlet channel 1122 is respectively connected to the water outlet hole 1112 and the water distribution network 120.

[0048] In some embodiments, the water inlet channel 1121 can be set at the lower part of the outer frame 110 and communicate with the water inlet hole 1111 set at the lower part of the outer frame 110, and the water outlet channel 1122 can be relatively set at the upper part of the outer frame 110 and communicate with the water outlet hole 1112 set at the upper part of the outer frame 110.

[0049] In other embodiments, the water inlet channel 1121 can be set at the upper part of the outer frame 110 and communicate with the water inlet hole 1111 set at the upper part of the outer frame 110, and the water outlet channel 1122 can be relatively set at the lower part of the outer frame 110 and communicate with the water outlet hole 1112 set at the lower part of the outer frame 110.

[0050] It should be noted that the water inlet channel 1121 and the water outlet channel 1122 are connected to the water distribution network 120 by direct penetration, and the water inlet hole 1111 and the water inlet channel 1121 as well as the water outlet hole 1112 and the water outlet channel 1122 are connected by indirect penetration.

[0051] Specifically, the electro-deintercalation electrode plate 200 and the ion exchange membrane 300 are both provided with a water inlet through hole and a water outlet through hole, which correspond to the water inlet hole 1111 and the water outlet hole 1112 respectively, and the projected area of ​​the water inlet through hole on the electro-deintercalation partition plate 100 covers the water inlet hole 1111 and part of the water inlet flow channel 1121, and the projected area of ​​the water outlet through hole on the electro-deintercalation partition plate 100 covers the water outlet hole 1112 and part of the water outlet flow channel 1122. In this way, when the electro-deintercalation partition plate 100 abuts between the electro-deintercalation electrode plate 200 and the ion exchange membrane 300, the water inlet hole 1111 is connected to the water inlet flow channel 1121 through the water inlet through hole, and the water outlet hole 1112 is connected to the water outlet flow channel 1122 through the water outlet through hole.

[0052] By providing the water inlet hole 1111 and the water inlet channel 1121, the inflow of brine to be treated and the conductive liquid can be achieved, and by providing the water outlet hole 1112 and the water outlet channel 1122, the discharge of lithium-rich liquid or lithium-poor liquid after lithium extraction can be achieved.

[0053] like Figure 1 and Figure 2 As shown, illustratively, at least two water inlet channels 1121 and at least two water outlet channels 1122 are provided, and there is a spacing between the two water inlet channels 1121 and between the two water outlet channels 1122 .

[0054] Exemplarily, the number of the water inlet flow channel 1121 and the water outlet flow channel 1122 can be two, three or more, and can be specifically designed according to the actual needs of the device, which will not be listed here one by one.

[0055] It should be noted that each water inlet channel 1121 includes multiple sub-water inlet channels, some of which have an arc, and one end close to the water inlet hole 1111 is inclined along a direction away from the first direction toward the end close to the water distribution network 120. In this way, the sub-water inlet channel has the function of diffusing the slurry and making the flow rate of the slurry uniform, so that the slurry can be evenly diffused to the water distribution network 120 through the water inlet channel 1121, thereby effectively improving the liquid distribution effect.

[0056] At the same time, each water outlet channel 1122 includes multiple sub-water outlet channels, some of which have an arc, and one end close to the water outlet hole 1112 is inclined along a direction away from the first direction toward the end close to the water distribution network 120. In this way, the sub-water outlet channel has the function of gathering the slurry and making the flow rate of the slurry uniform, so that the slurry can be evenly gathered to the water outlet hole 1112 through the water outlet channel 1122, thereby further improving the liquid distribution effect.

[0057] like Figure 1 and Figure 2 As shown, exemplarily, a plurality of the water inlet holes 1111 and the water outlet holes 1112 are provided, and the plurality of the water inlet holes 1111 and the plurality of the water outlet holes 1112 are spaced apart along a second direction, and the second direction is perpendicular to the first direction.

[0058] It should be noted that part of the water inlet holes 1111 is connected to the water inlet channel 1121, and part of the water outlet holes 1112 is connected to the water outlet channel 1122. Figure 1 and Figure 2 in the Y direction.

[0059] Exemplarily, the number of the water inlet holes 1111 and the water outlet holes 1112 can be four, six or more, and can be specifically designed according to the actual needs of the device, which will not be listed here one by one.

[0060] like Figure 1 and Figure 2 As shown, illustratively, the shapes of the water inlet 1111 and the water outlet 1112 are one or more of ellipse, semi-ellipse, circle, semi-circle, polygon, etc. The shapes can be designed according to the actual needs of the device, and will not be listed here.

[0061] In any of the above embodiments of the present application, optionally, the outer frame 110 is made of rubber, silicone or foam.

[0062] In this embodiment, by setting the material of the outer frame 110 to rubber, silicone or foam, the electrical release partition 100 has the performance of sealing and leak-proofing, eliminating the sealing strip set for sealing and leak-proofing in the related technology, effectively simplifying the structure and reducing the production and installation costs.

[0063] Embodiment 2

[0064] like Figure 3 As shown, in the second embodiment of the present application, an electro-deintercalation membrane stack 1000 is further provided, comprising the electro-deintercalation partition plate 100 described in any one of the above-mentioned first embodiments.

[0065] The electro-deintercalation membrane stack 1000 has the electro-deintercalation separator 100 described in the first embodiment, and thus has all the beneficial effects of the electro-deintercalation separator 100 described in the first embodiment, which will not be described in detail here.

[0066] like Figure 3 As shown, in the above embodiment of the present application, optionally, the electro-deintercalation membrane stack 1000 further includes an electro-deintercalation electrode plate 200 and an ion exchange membrane 300 , and the electro-deintercalation separator 100 is abutted between the electro-deintercalation electrode plate 200 and the ion exchange membrane 300 .

[0067] In this embodiment, the electro-deintercalation separator 100 is abutted between the electro-deintercalation electrode plate 200 and the ion exchange membrane 300 to isolate the electro-deintercalation electrode plate 200 from the ion exchange membrane 300. At this time, the sealing between the electro-deintercalation electrode plate 200 and the ion exchange membrane 300 mainly relies on the electro-deintercalation separator 100. Therefore, the outer frame material of the electro-deintercalation electrode plate 200 is no longer limited to soft rubber material, which expands the material selection range of the outer frame material of the electro-deintercalation electrode plate 200 and reduces the hardware cost.

[0068] At the same time, the sealing strips provided for sealing and preventing water leakage in the related technology are omitted, which effectively simplifies the structure and reduces the production and installation costs.

[0069] For example, the ion exchange membrane 300 is specifically an anion selective permeable membrane that only allows monovalent anions to pass through. For reference, the length and width of the ion exchange membrane 300 may be consistent with the electro-deintercalation separator 100 and the electro-deintercalation electrode plate 200 .

[0070] It can be understood that the electro-deintercalation membrane stack 1000 is composed of an end plate, a guide plate, a gasket, at least one membrane stack unit, a gasket, a guide plate, and an end plate stacked in sequence, and the membrane stack unit is composed of an electro-deintercalation partition 100, an electro-deintercalation electrode plate 200, an electro-deintercalation partition 100, an ion exchange membrane 300, an electro-deintercalation partition 100, an electro-deintercalation electrode plate 200, an electro-deintercalation partition 100, and an ion exchange membrane 300 stacked in sequence.

[0071] Embodiment 3

[0072] A third embodiment of the present application further provides a lithium extraction device, comprising the electro-deintercalation membrane stack 1000 described in any one of the second embodiments above.

[0073] The lithium extraction device has the electro-deintercalation membrane stack 1000 described in the second embodiment, and thus has all the beneficial effects of the electro-deintercalation membrane stack 1000 described in the second embodiment, which will not be described in detail here.

[0074] In summary, the present application proposes an electric de-embedding partition 100, which includes an outer frame 110 and a water distribution network 120. The water distribution network 120 is arranged on the inner circumference of the outer frame 110. The outer frame 110 is provided with a guide hole group 111 and a water distribution channel group 112. The water distribution channel group 112 is respectively connected to the guide hole group 111 and the water distribution network 120. The water distribution network 120 and the outer frame 110 are integrally formed.

[0075] By forming the water distribution net 120 and the outer frame 110 as one piece, the gap between the water distribution net 120 and the outer frame 110 is extremely small or even non-existent, making it difficult for the liquid to pass through the gap between the water distribution net 120 and the outer frame 110, and thus allowing the liquid to flow through the water distribution net 120 uniformly at the same flow rate everywhere, effectively improving the flow distribution effect. This avoids the technical problem in the prior art that there is a gap of a certain width between the water distribution net of the partition and the outer frame, causing part of the liquid to quickly flow through the gap and affect the liquid distribution effect.

[0076] By setting the material of the outer frame 110 to rubber, silicone or foam, the electrical deintercalation separator 100 has the performance of sealing and leakproof, eliminating the sealing strip set for sealing and leakproofing in the related art, effectively simplifying the structure and reducing the production and installation costs. At the same time, the sealing between the electrical deintercalation electrode plate 200 and the ion exchange membrane 300 mainly relies on the electrical deintercalation separator 100, so the material of the outer frame of the electrical deintercalation electrode plate 200 is no longer limited to soft rubber material, expanding the material selection range of the outer frame of the electrical deintercalation electrode plate 200 and reducing the hardware cost.

[0077] 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 present application. 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 the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0078] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An electrical de-embedding separator, characterized in that: include: Outer frame (110); a water distribution network (120), the water distribution network (120) being arranged in the inner circumference of the outer frame (110); The outer frame (110) is provided with a flow guide hole group (111) and a water distribution channel group (112); the water distribution channel group (112) is respectively connected to the flow guide hole group (111) and the water distribution network (120); and the water distribution network (120) and the outer frame (110) are integrally formed.

2. The electrical deintercalation separator according to claim 1, characterized in that: The guide hole group (111) comprises a water inlet hole (1111) and a water outlet hole (1112); the water inlet hole (1111) and the water outlet hole (1112) are respectively arranged at two ends of the outer frame (110) along a first direction.

3. The electrical deintercalation separator according to claim 2, characterized in that: The water distribution channel group (112) comprises a water inlet channel (1121) and a water outlet channel (1122); the water inlet channel (1121) and the water outlet channel (1122) are respectively arranged at two ends of the outer frame (110) along the first direction; the water inlet channel (1121) is respectively connected to the water inlet hole (1111) and the water distribution network (120); and the water outlet channel (1122) is respectively connected to the water outlet hole (1112) and the water distribution network (120).

4. The electrical deintercalation separator according to claim 3, characterized in that: At least two of the water inlet flow channels (1121) and the water outlet flow channels (1122) are provided, and there is a spacing between the two water inlet flow channels (1121) and between the two water outlet flow channels (1122).

5. The electrical deintercalation separator according to claim 4, characterized in that: A plurality of the water inlet holes (1111) and a plurality of the water outlet holes (1112) are provided, and the plurality of the water inlet holes (1111) and the plurality of the water outlet holes (1112) are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

6. The electrical deintercalation separator according to claim 2, characterized in that: The shapes of the water inlet (1111) and the water outlet (1112) are one or more of elliptical, semi-elliptical, circular, semi-circular, and polygonal.

7. The electrical deintercalation separator according to any one of claims 1 to 6, characterized in that: The material of the outer frame (110) is rubber, silica gel or foam.

8. An electro-deintercalation membrane stack, characterized in that: The invention comprises the electric deintercalation separator (100) according to any one of claims 1 to 7.

9. The electro-deintercalation membrane stack according to claim 8, characterized in that: The electro-deintercalation membrane stack (1000) further comprises an electro-deintercalation electrode plate (200) and an ion exchange membrane (300), and the electro-deintercalation separator (100) is abutted between the electro-deintercalation electrode plate (200) and the ion exchange membrane (300).

10. A lithium extraction device, characterized in that: An electro-deintercalation membrane stack (1000) comprising any one of claims 8 to 9.

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