A sintering device for the positive electrode material of a sodium-ion battery

Abstract

The present invention relates to the technical field of battery processing, and particularly to a sintering device for a positive electrode material of a sodium-ion battery, which includes a sintering box, a material storage member, a material blocking member, a material guiding member, and a sintering plate member; a first annular installation cavity, a hemispherical installation cavity, and a second annular installation cavity are sequentially arranged from top to bottom inside the sintering box, and the three are sequentially communicated; the material storage member is rotatably installed in the first annular installation cavity, the interior of the material storage member is used for storing materials, and the materials can be thrown out along the outer side of the material storage member during the rotation of the material storage member; the material blocking member is arranged in an annular structure and is located outside the material storage member, and is used for screening the thrown-out materials so that the materials meeting the screening conditions can pass through; the material guiding member is arranged in an annular structure and is located outside the material blocking member, and is used for blocking the screened materials and re-guiding the blocked materials; the sintering plate member is movably installed in the second annular installation cavity in the vertical direction, and the top of the sintering plate member can abut against the bottom of the hemispherical installation cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, and particularly to a sintering device for a cathode material of a sodium-ion battery. Background Art

[0002] A sodium-ion battery is a secondary battery that relies on the movement of sodium ions between the positive and negative electrodes to complete the charge and discharge process, and its working principle is similar to that of the widely used lithium-ion battery.

[0003] The processing of the cathode material of the battery mainly includes steps such as sintering, granulation, sheet making, and drying. Among them, sintering is to sinter the prepared electrode powder material into a crystalline state by using a sintering device for subsequent processing. However, the existing sintering devices have the following problems when in use. For example, the existing sintering devices are not convenient for uniformly sintering the powder material. Most of them put the powder material into a crucible for heating and sintering treatment. In this way, the materials are too concentrated, which easily leads to uneven sintering and too long sintering time. At the same time, after sintering is completed, it is also necessary to screen the crystals to avoid the presence of powder. The existing sintering devices are not convenient for vibrating and screening the sintered materials, resulting in an impact on the sintering purity of the materials. Summary of the Invention

[0004] Based on this, in view of the above technical problems, it is necessary to provide a sintering device for a cathode material of a sodium-ion battery, which has more uniform sintering than the traditional sintering method, can effectively reduce the sintering time, and has higher sintering purity.

[0005] The present invention provides a sintering device for a cathode material of a sodium-ion battery, including:

[0006] A sintering box, which is internally provided with a first annular installation cavity, a hemispherical installation cavity, and a second annular installation cavity from top to bottom in sequence, and the three are communicated in sequence;

[0007] A material storage member, which is rotatably installed in the first annular installation cavity. The interior of the material storage member is used for storing materials, and the materials can be thrown out along the outer side of the material storage member during the rotation of the material storage member;

[0008] A material blocking member, which is arranged in an annular structure and is located outside the material storage member, and is used for screening the thrown-out materials so that the materials meeting the screening conditions can pass through;

[0009] A material guiding member, which is arranged in an annular structure and is located outside the material blocking member, and is used for blocking the screened materials and re-guiding the blocked materials;

[0010] The sintered plate is movably installed in the second annular installation cavity in the vertical direction. The top of the sintered plate can abut against the bottom of the hemispherical installation cavity, so that the top of the sintered plate itself deforms and fits the bottom of the hemispherical installation cavity.

[0011] In one embodiment, an installation opening is provided at the top end of the first annular installation cavity. The upper surface of the hemispherical installation cavity is a plane. A plurality of groups of first material guiding holes are provided at the bottom end of the hemispherical installation cavity. The plurality of groups of first material guiding holes are distributed in an inner and outer circle in sequence, and the aperture of the first material guiding holes in the inner circle is larger than the aperture of the first material guiding holes in the outer circle.

[0012] In one embodiment, the material storage member includes a feed pipe, a spherical outer shell, and a material guiding plate member. The feed pipe is rotatably installed in the installation opening. The bottom end of the feed pipe penetrates through to the top end of the spherical outer shell. A plurality of second material guiding holes are provided on the side surface of the spherical outer shell in an annular array. The material guiding plate member is arranged at the inner bottom end of the spherical outer shell.

[0013] In one embodiment, the material guiding plate member is composed of a plurality of material guiding plates with inclined surfaces. Both side surfaces of the material guiding plate are inclined surfaces and are symmetrical to each other. The plurality of material guiding plates are arranged in an annular array.

[0014] In one embodiment, the material blocking member includes a first annular plate, two first annular conical plates, and a first connecting rod. The two first annular conical plates are symmetrically arranged at the top end and the bottom end of the first annular plate. The inner circle of the first annular conical plate is inclined away from the first annular plate. A plurality of third material guiding holes are provided on the first annular plate. The first annular conical plate and the spherical outer shell are connected by a plurality of first connecting rods arranged in an annular array.

[0015] In one embodiment, the material guiding member includes a second annular plate and a second annular conical plate. The bottom end of the second annular conical plate is connected to the bottom end of the second annular plate. The top end of the second annular conical plate is inclined upward away from the second annular plate. The connection between the second annular plate and the second annular conical plate is bent, and a plurality of fourth material guiding holes are provided in an annular array at the bent position.

[0016] In one embodiment, two sets of the material guiding members are provided. The two sets of material guiding members are sleeved with each other, and the aperture of the fourth material guiding holes of the inner ring material guiding member is larger than the aperture of the fourth material guiding holes of the outer ring material guiding member.

[0017] In one embodiment, a plurality of mounting holes are formed in a circular array on the second annular plate, and a driving device is provided at the top of the first annular mounting cavity. The driving device includes a bent rod, a clamping plate, a guiding ring, and a second connecting rod. The bent rod horizontally passes through two coaxially arranged mounting holes, and both ends of the bent rod bend upward and penetrate through the clamping plate. The clamping plate is arranged in a circular plate structure, and there are two clamping plates which are clamped on the upper surface and the lower surface of the guiding ring. The guiding ring is connected to the top of the first annular mounting cavity through the second connecting rod, and the second connecting rod is located between two adjacent bent rods.

[0018] In one embodiment, the sintered plate member includes a third annular plate, a fourth annular plate, a fifth annular plate, and an arched plate. The fourth annular plate and the fifth annular plate are respectively located on the outer circle and the inner circle of the third annular plate, and the outer circle of the arched plate is connected to the top end of the fifth annular plate.

[0019] In one embodiment, the third annular plate, the fourth annular plate, the fifth annular plate, and the arched plate are integrally formed. Normally, the middle part of the arched plate protrudes upward, and when stressed, the middle part of the arched plate protrudes downward.

[0020] For the above sodium ion battery positive electrode material sintering device, the material to be sintered is put into the storage member. During use, the storage member is driven to rotate. Affected by the centrifugal force, the material in the storage member will be thrown out towards the material blocking member. The material blocking member will screen the material. The material that meets the screening requirements will pass through the material blocking member, and the material that does not meet the screening requirements will be blocked by the material blocking member and fall into the hemispherical mounting cavity. Among them, the material that passes through the material blocking member will come into contact with the material guiding member and be guided to the designated area during the contact process, and finally fall into the hemispherical mounting cavity. Since the material is differentiated before falling into the hemispherical mounting cavity, the material will be initially differentiated after falling. The differentiated material will pass through the bottom end of the hemispherical mounting cavity and fall into the sintered plate member in the second annular mounting cavity. The top end of the sintered plate member will guide the material to the designated area on the surface of the sintered plate member. Subsequently, the sintered plate member moves upward to close the bottom end of the hemispherical mounting cavity, and sintering can be carried out in the second annular mounting cavity. This sintering device has more uniform sintering than the traditional sintering method, can effectively reduce the sintering time, and has a higher sintering purity. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Schematic three-dimensional structure diagram of the sintering device provided by the present invention;

[0023] Figure 2 Schematic plan structure diagram of the sintering device provided by the present invention;

[0024] Figure 3 Schematic structure diagram of the sintering box provided by the present invention;

[0025] Figure 4 Schematic internal structure diagram of the sintering device provided by the present invention;

[0026] Figure 5 Schematic three-dimensional structure diagram of the material storage member and the material blocking member provided by the present invention;

[0027] Figure 6 Schematic sectional structure diagram of the material storage member and the material blocking member provided by the present invention;

[0028] Figure 7 Schematic structure diagram of the material guiding member provided by the present invention;

[0029] Figure 8 Schematic structure diagram of the sintering plate member provided by the present invention.

[0030] Reference numerals:

[0031] 110, first annular installation cavity; 111, installation opening; 120, hemispherical installation cavity; 121, first material guiding hole; 130, second annular installation cavity; 200, material storage member; 210, feed pipe; 220, spherical outer shell; 221, second material guiding hole; 230, material guiding plate member; 300, material blocking member; 310, first annular plate; 311, third material guiding hole; 320, first annular conical plate; 330, first connecting rod; 400, material guiding member; 410, second annular plate; 411, installation hole; 420, second annular conical plate; 421, fourth material guiding hole; 500, driving device; 510, bent rod; 520, clamping plate; 530, guiding ring; 540, second connecting rod; 600, sintering plate member; 610, third annular plate; 620, fourth annular plate; 630, fifth annular plate; 640, arched plate. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] The following will be combined with Figures 1 to 8 to describe a sintering device for a cathode material of a sodium-ion battery according to the present invention.

[0034] In one embodiment, a sintering device for a cathode material of a sodium-ion battery includes a sintering box, a material storage member 200, a material blocking member 300, a material guiding member 400, and a sintering plate member 600. Inside the sintering box, a first annular installation cavity 110, a hemispherical installation cavity 120, and a second annular installation cavity 130 are sequentially arranged from top to bottom, and the three are sequentially communicated. The material storage member 200 is rotatably installed in the first annular installation cavity 110. The inside of the material storage member 200 is used to store materials, and the materials can be thrown out along the outer side of the material storage member 200 during the rotation of the material storage member 200. The material blocking member 300 is arranged in an annular structure and is located outside the material storage member 200, and is used to screen the thrown-out materials so that the materials meeting the screening conditions can pass through. The material guiding member 400 is arranged in an annular structure and is located outside the material blocking member 300, and is used to block the screened materials and re-guide the blocked materials. The sintering plate member 600 is movably installed in the second annular installation cavity 130 in the vertical direction. The top of the sintering plate member 600 can abut against the bottom of the hemispherical installation cavity 120 so that the top of itself deforms and fits the bottom of the hemispherical installation cavity 120.

[0035] For the above-mentioned sintering device for a cathode material of a sodium-ion battery, the material to be sintered is put into the material storage member 200. During use, the material storage member 200 is driven to rotate. Affected by the centrifugal force, the materials in the material storage member 200 will be thrown out towards the material blocking member 300. The material blocking member 300 will screen the materials. The materials meeting the screening requirements will pass through the material blocking member 300, and the materials not meeting the screening requirements will be blocked by the material blocking member 300 and fall into the hemispherical installation cavity 120. Among them, the materials passing through the material blocking member 300 will contact the material guiding member 400 and be guided to the designated area during the contact process, and finally fall into the hemispherical installation cavity 120. Since the materials are separated and then fall into the hemispherical installation cavity 120, the materials will be initially separated after falling. The separated materials will pass through the bottom end of the hemispherical installation cavity 120 and fall onto the sintering plate member 600 in the second annular installation cavity 130. The top end of the sintering plate member 600 will guide the materials to the designated area on the surface of the sintering plate member 600. Subsequently, the sintering plate member 600 moves upward to close the bottom end of the hemispherical installation cavity 120, and sintering can be carried out in the second annular installation cavity 130. This sintering device has more uniform sintering than the traditional sintering method, can effectively reduce the sintering time, and has a higher sintering purity.

[0036] In one embodiment, an installation opening 111 is formed at the top end of the first annular installation cavity 110. The upper surface of the hemispherical installation cavity 120 is a flat surface. A plurality of first material guiding holes 121 are formed at the bottom end of the hemispherical installation cavity 120. The plurality of first material guiding holes 121 are distributed in an inner and outer ring sequence. Moreover, the aperture of the first material guiding hole 121 located in the inner ring is larger than the aperture of the first material guiding hole 121 located in the outer ring.

[0037] Specifically, the upper surface of the hemispherical installation cavity 120 is a flat surface. Therefore, after the material enters the hemispherical installation cavity 120, it will slide down along the surface of the hemispherical installation cavity 120. Since there are a plurality of first material guiding holes 121 and the aperture of the first material guiding hole 121 gradually increases from outside to inside, the part of the material falling into the second annular installation cavity 130 after passing through the first material guiding holes 121 presents an annular distribution state according to the particle size, which is convenient for improving the subsequent sintering effect.

[0038] In one embodiment, the material storage member 200 includes a feed pipe 210, a spherical outer shell 220, and a material guiding plate member 230. The feed pipe 210 is rotatably installed in the installation opening 111. The bottom end of the feed pipe 210 penetrates through to the top end of the spherical outer shell 220. A plurality of second material guiding holes 221 are formed in an annular array on the side surface of the spherical outer shell 220. The material guiding plate member 230 is arranged at the inner bottom end of the spherical outer shell 220.

[0039] Specifically, the material guiding plate member 230 is composed of a plurality of material guiding plates with inclined surfaces. Both side surfaces of the material guiding plate are inclined surfaces and are symmetric to each other. The plurality of material guiding plates are arranged in an annular array.

[0040] In one embodiment, the material blocking member 300 includes a first annular plate 310, two first annular conical plates 320, and a first connecting rod 330. The two first annular conical plates 320 are symmetrically arranged at the top end and the bottom end of the first annular plate 310. The inner circle of the first annular conical plate 320 is inclined away from the first annular plate 310. A plurality of third material guiding holes 311 are formed in the first annular plate 310. The first annular conical plate 320 is connected to the spherical outer shell 220 through a plurality of first connecting rods 330 arranged in an annular array.

[0041] Specifically, the first annular plate 310 and the two first annular conical plates 320 form a space with an opening facing the spherical outer shell 220. When the material is thrown towards the first annular plate 310, even if the material is scattered in all directions due to the rebound of the first annular plate 310, it will be restricted by the first annular conical plate 320, avoiding falling into other areas and ensuring that the material can remain uniform after being dispersed.

[0042] In one embodiment, the material guiding member 400 includes a second annular plate 410 and a second annular tapered plate 420; the bottom end of the second annular tapered plate 420 is connected to the bottom end of the second annular plate 410, the top end of the second annular tapered plate 420 is inclined upward and away from the second annular plate 410, the connection between the second annular plate 410 and the second annular tapered plate 420 is bent, and a plurality of fourth material guiding holes 421 are formed in an annular array at the bent position.

[0043] Specifically, there are two sets of material guiding members 400, the two sets of material guiding members 400 are sleeved with each other, and the aperture of the fourth material guiding hole 421 of the inner ring material guiding member 400 is larger than the aperture of the fourth material guiding hole 421 of the outer ring material guiding member 400.

[0044] In one embodiment, a plurality of mounting holes 411 are formed in an annular array on the second annular plate 410, a driving device 500 is arranged at the top of the first annular mounting cavity 110, and the driving device 500 includes a bent rod 510, a clamping plate 520, a guiding ring 530 and a second connecting rod 540; the bent rod 510 horizontally penetrates through two coaxially arranged mounting holes 411, the two ends of the bent rod 510 are bent upward and penetrate through the clamping plate 520, the clamping plate 520 is arranged in an annular plate structure, there are two clamping plates 520, and the two clamping plates 520 are clamped on the upper surface and the lower surface of the guiding ring 530, the guiding ring 530 is connected to the top of the first annular mounting cavity 110 through the second connecting rod 540, and the second connecting rod 540 is located between two adjacent bent rods 510.

[0045] Specifically, the guiding ring 530 is rotatable, and the rotation mode can be driven by an external driving member, or the clamping plate 520 can rotate on the guiding ring 530, and the driving mode of rotation is not limited. Since the second connecting rod 540 is located between two adjacent bent rods 510, the rotation of the guiding ring 530 or the clamping plate 520 is a small-angle reciprocating rotation, and this movement mode can effectively shake off the material.

[0046] In one embodiment, the sintered plate member 600 includes a third annular plate 610, a fourth annular plate 620, a fifth annular plate 630 and an arched plate 640; the fourth annular plate 620 and the fifth annular plate 630 are respectively located on the outer ring and the inner ring of the third annular plate 610, and the outer ring of the arched plate 640 is connected to the top end of the fifth annular plate 630.

[0047] Specifically, the third annular plate 610, the fourth annular plate 620, the fifth annular plate 630 and the arched plate 640 are integrally formed. Under normal conditions, the middle part of the arched plate 640 protrudes upward, and when stressed, the middle part of the arched plate 640 protrudes downward.

[0048] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0049] The above-described embodiments only express several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be subject to the appended claims.

Claims

1. A sodium ion battery positive electrode material sintering device, characterized in that: include: The sintering box has a first annular mounting cavity, a hemispherical mounting cavity and a second annular mounting cavity arranged therein from top to bottom, and the three are connected in sequence; A material storage member is rotatably mounted in the first annular mounting cavity, wherein the interior of the material storage member is used to store materials, and the materials can be thrown out along the outer side of the material storage member during the rotation of the material storage member; The material blocking member is provided in an annular structure and is located at the outer ring of the material storage member, and is used to screen the ejected materials so that the materials meeting the screening conditions can pass through; The material guide member is provided in an annular structure and is located at the outer ring of the material blocking member, and is used to block the screened material and redirect the blocked material; A sintered plate is movably mounted in the second annular mounting cavity in a vertical direction, and the top of the sintered plate can abut against the bottom of the hemispherical mounting cavity, so that the top of the sintered plate is deformed and fits the bottom of the hemispherical mounting cavity; The top of the first annular installation cavity is provided with an installation opening, the upper surface of the hemispherical installation cavity is a plane, and the bottom of the hemispherical installation cavity is provided with multiple groups of first material guide holes, which are sequentially distributed in inner and outer circles, and the aperture of the first material guide holes located in the inner circle is larger than the aperture of the first material guide holes located in the outer circle; The material storage member comprises a feed pipe, a spherical shell and a material guide plate; the feed pipe is rotatably installed in the installation port, the bottom end of the feed pipe passes through the top end of the spherical shell, a plurality of second material guide holes are formed in a circular array on the side of the spherical shell, and the material guide plate is arranged at the inner bottom end of the spherical shell; The material guide plate member is composed of a plurality of material guide plates with inclined surfaces. Both side surfaces of the material guide plates are arranged as inclined surfaces and are symmetrical to each other. The plurality of material guide plates are arranged in a ring array.

2. The sodium ion battery positive electrode material sintering device according to claim 1, characterized in that: The material blocking member includes a first annular plate, two first annular cone plates and a first connecting rod; the two first annular cone plates are symmetrically arranged at the top and bottom ends of the first annular plate, the inner ring of the first annular cone plate is inclined toward a direction away from the first annular plate, and a plurality of third material guide holes are opened on the first annular plate, and the first annular cone plate is connected to the spherical shell through a plurality of first connecting rods arranged in an annular array.

3. The sodium ion battery positive electrode material sintering device according to claim 2, characterized in that: The material guide member includes a second annular plate and a second annular cone plate; the bottom end of the second annular cone plate is connected to the bottom end of the second annular plate, the top end of the second annular cone plate is inclined upward in a direction away from the second annular plate, the connection between the second annular plate and the second annular cone plate is bent, and a plurality of fourth material guide holes are provided in an annular array at the bent position.

4. The sodium ion battery positive electrode material sintering device according to claim 3, characterized in that: The material guide members are provided in two groups, the two groups of material guide members are sleeved with each other, and the aperture of the fourth material guide hole of the inner ring material guide member is larger than the aperture of the fourth material guide hole of the outer ring material guide member.

5. The sodium ion battery positive electrode material sintering device according to claim 4, characterized in that: The second annular plate is provided with a plurality of mounting holes in an annular array, and a driving device is arranged on the top of the first annular mounting cavity, and the driving device comprises a bent rod, a clamping plate, a guide ring and a second connecting rod; the bent rod is horizontally passed through two coaxial mounting holes, and both ends of the bent rod are bent upward and pass through the clamping plate, and the clamping plate is arranged in an annular plate structure, and two clamping plates are arranged, and the two clamping plates are clamped on the upper surface and the lower surface of the guide ring, and the guide ring is connected to the top of the first annular mounting cavity through the second connecting rod, and the second connecting rod is located between two adjacent bent rods.

6. The sodium ion battery positive electrode material sintering device according to claim 5, characterized in that: The sintered plate comprises a third annular plate, a fourth annular plate, a fifth annular plate and an arched plate; the fourth annular plate and the fifth annular plate are respectively located at the outer ring and inner ring of the third annular plate, and the outer ring of the arched plate is connected to the top end of the fifth annular plate.

7. The sodium ion battery positive electrode material sintering device according to claim 6, characterized in that: The third annular plate, the fourth annular plate, the fifth annular plate and the arched plate are integrally formed. Under normal conditions, the middle portion of the arched plate protrudes upward, and when subjected to force, the middle portion of the arched plate protrudes downward.

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