CN217715950U

CN217715950U - Sagger

Info

Publication number: CN217715950U
Application number: CN202221474331.5U
Authority: CN
Inventors: 李军秀; 黄兵; 黄孝伟; 李科
Original assignee: Hunan Dejingyuan Technology Co ltd
Current assignee: Hunan Dejingyuan Technology Co ltd
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-11-01
Anticipated expiration: 2032-06-13

Abstract

The utility model discloses a sagger, include: the sagger body is provided with a containing cavity; and the alkali erosion resistant pieces are paved on the cavity wall of the accommodating cavity and can fully cover the cavity wall of the accommodating cavity. The sagger can improve the quality of lithium battery or sodium battery products when the lithium battery or sodium battery materials are roasted at high temperature.

Description

Sagger

Technical Field

The utility model relates to a lithium battery material or sodium battery material preparation technical field, in particular to sagger.

Background

In the technical field of preparation of lithium battery materials or sodium battery materials, the lithium battery materials or the sodium battery materials are required to be roasted in a high-temperature kiln, and in the roasting process of the lithium battery materials or the sodium battery materials, the lithium battery materials or the sodium battery materials are required to be held by saggers. The conventional sagger for containing the lithium battery material or the sodium battery material is mainly made of mullite, mullite-cordierite or corundum-mullite. Traditional material that is used for holding the saggar of lithium cell material or sodium cell material can absorb the lithium source in the lithium cell material or the sodium source in the sodium cell material when carrying out high temperature roasting to lithium cell or sodium cell material, lead to lithium cell or sodium cell product to appear the defect easily, and simultaneously, lithium cell material or sodium cell material are alkaline material, and the saggar still easily alkaline material takes place the reaction under high temperature, lead to lithium cell or sodium cell product to be polluted, thereby lead to lithium cell or sodium cell product to can not reach the quality requirement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a sagger can improve the quality of lithium cell or sodium battery product when carrying out the high temperature calcination to lithium cell material or sodium battery material.

According to the utility model discloses sagger, include: the sagger body is provided with a containing cavity; and the alkali erosion resistant pieces are paved on the cavity wall of the accommodating cavity and can fully cover the cavity wall of the accommodating cavity.

According to the utility model discloses sagger has following beneficial effect at least:

in the above-described sagger, a lithium battery material or a sodium battery material can be placed in the housing cavity of the sagger main body to be baked at a high temperature. Because a plurality of alkali erosion resistant pieces are laid on the chamber wall that holds the chamber, and a plurality of alkali erosion resistant pieces can be with the chamber wall full coverages that holds the chamber, consequently, when lithium cell material or sodium battery material placed in hold the intracavity, lithium cell material or sodium battery material can place on the surface of alkali erosion resistant piece, thereby can prevent lithium cell material or sodium battery material and the chamber wall lug connection in the chamber that holds of casket-like bowl main part, further can be when carrying out high temperature roasting to lithium cell material or sodium battery material, prevent that the material of casket-like bowl main part from absorbing the lithium source in the lithium cell material or the sodium source in the sodium cell material, avoid lithium cell material or sodium battery material product to appear the defect.

According to some embodiments of the invention, the alkali-resistant element is adhered to a wall of the containment chamber.

According to some embodiments of the invention, the alkali-resistant element is adhered to the wall of the containing chamber by a high-temperature ceramic adhesive.

According to some embodiments of the utility model, two adjacent alkali erosion resistant pieces have the expansion joint between them.

According to some embodiments of the present invention, the alkali-resistant member is provided with a connecting portion and a connecting groove, the connecting portion and the connecting groove are respectively disposed on two opposite sides of the alkali-resistant member;

in two adjacent alkali-resistant pieces, the connecting portion of one of the alkali-resistant pieces is inserted into the connecting groove of the other alkali-resistant piece.

According to some embodiments of the utility model, connecting portion wear to locate under the condition of spread groove, connecting portion with the expansion joint has between the deepest cell wall of spread groove.

According to the utility model discloses a some embodiments, the diapire that holds the chamber is the rectangle diapire, the lateral wall that holds the chamber is the rectangle lateral wall, the rectangle lateral wall encloses to be established the diapire edge that holds the chamber.

According to some embodiments of the utility model, alkali erosion resistant spare is alkali erosion resistant spare of rectangle, alkali erosion resistant spare of rectangle is laid rectangle diapire and on the rectangle lateral wall, alkali erosion resistant spare of rectangle area is more than or equal to 16cm²And the thickness of the rectangular alkali-resistant part is between 1mm and 10 mm.

According to some embodiments of the invention, the rectangular alkali-resistant element is a ceramic element.

According to some embodiments of the present invention, the porosity of the ceramic element is less than 1%, and the water absorption of the ceramic element is less than 1%.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic structural view of a sagger according to an embodiment of the present invention;

fig. 2 is a schematic front view of a sagger according to an embodiment of the present invention;

FIG. 3 is a first schematic structural view of an alkali erosion resistant member according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an alkali erosion resistant member according to an embodiment of the present invention.

Reference numerals:

100. a sagger body; 110. an accommodating chamber;

200. an alkali-resistant element; 210. a connecting portion; 220. and connecting the grooves.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, a sagger according to an embodiment of the present invention includes a sagger body 100 and a plurality of alkali-resistant members 200.

Specifically, the sagger body 100 is provided with a housing cavity 110; the plurality of alkali-erosion resistant members 200 are laid on the wall of the accommodating chamber 110, and the plurality of alkali-erosion resistant members 200 can cover the wall of the accommodating chamber 110 completely.

In the above-described sagger, a lithium battery material or a sodium battery material can be placed in the receiving cavity 110 of the sagger body 100 to be baked at a high temperature. Because a plurality of alkali erosion resistant pieces 200 are laid on the cavity wall of the accommodating cavity 110, and the plurality of alkali erosion resistant pieces 200 can fully cover the cavity wall of the accommodating cavity 110, when a lithium battery material or a sodium battery material is placed in the accommodating cavity 110, the lithium battery material or the sodium battery material can be placed on the surface of the alkali erosion resistant pieces 200, so that the lithium battery material or the sodium battery material can be prevented from being directly connected with the cavity wall of the accommodating cavity 110 of the sagger main body 100, and further, when the lithium battery material or the sodium battery material is roasted at a high temperature, the lithium battery material or the sodium battery material in the lithium battery material can be prevented from being absorbed by the material of the sagger main body 100, and the lithium battery material or the sodium battery material product is prevented from being defective.

Referring to fig. 1 and 2, it can be understood that the alkali-resistant member 200 is adhered to the wall of the accommodating chamber 110.

Therefore, when the lithium battery material or the sodium battery material is roasted at high temperature, the alkali erosion resistant piece 200 can be prevented from falling off from the cavity wall of the accommodating cavity 110, so that the alkali erosion resistant piece 200 has a better effect of isolating the lithium battery material or the sodium battery material from the cavity wall of the accommodating cavity 110.

Referring to fig. 1 and 2, it can be understood that the alkali-resistant member 200 is adhered to the wall of the accommodating chamber 110 by a high-temperature ceramic adhesive.

The high-temperature ceramic adhesive is a high-performance adhesive used for adhering a wear-resistant ceramic sheet or a lining sheet to the surface of an equipment base material to protect the equipment base material from wear under a high-temperature working condition, generally a working condition that the temperature is higher than 200 ℃.

Specifically, the working temperature of the high-temperature ceramic adhesive can reach 1760 ℃, in addition, the high-temperature ceramic adhesive with different temperature resistant ranges can be selected according to different working conditions, the alkali erosion resistant piece 200 is adhered to the sagger main body 100 by using the high-temperature ceramic adhesive, and then the high-temperature ceramic adhesive is dried for 1h to 10h within the temperature range of 100 ℃ to 500 ℃ so that the alkali erosion resistant piece 200 can be firmly adhered to the sagger main body 100.

Thus, the alkali erosion resistant piece 200 is adhered to the cavity wall of the accommodating cavity 110 by using the high-temperature ceramic adhesive, so that when the lithium battery material or the sodium battery material is baked at a high temperature, the alkali erosion resistant piece 200 does not fall off from the cavity wall of the accommodating cavity 110 due to an overhigh temperature, and the sagger has a better effect of isolating the lithium battery material or the sodium battery material from the cavity wall of the accommodating cavity 110.

Referring to fig. 1, it can be understood that there are expansion joints (not shown) between two adjacent alkali-resistant members 200.

Specifically, the width of the expansion joint is in the range of 0.2mm to 1 mm.

Note that the thermal expansion coefficient of the alkali-resistant member 200 is larger than that of the body 100.

Thus, when the lithium battery material or the sodium battery material is roasted at high temperature, the expansion joint can reserve a thermal expansion space for the alkali erosion resistant piece 200, and the sagger body 100 with a small thermal expansion coefficient is prevented from being cracked due to thermal expansion of the alkali erosion resistant piece 200 with a large thermal expansion coefficient, so that the sagger has stronger safety performance.

Referring to fig. 3 and 4, it can be understood that the alkali-resistant element 200 is provided with a connecting portion 210 and a connecting groove 220, and the connecting portion 210 and the connecting groove 220 are respectively disposed on two opposite sides of the alkali-resistant element 200; in two adjacent alkali-resistant elements 200, the connecting portion 210 of one alkali-resistant element 200 is inserted into the connecting groove 220 of the other alkali-resistant element 200.

Specifically, the coupling groove 220 can restrict the movement of the coupling portion 210 in the thickness direction of the alkali-resistant member 200.

In this way, the connecting portion 210 can be inserted into the connecting groove 220 of the adjacent alkali-resistant elements 200, so that the two adjacent alkali-resistant elements 200 can be connected more stably, and the alkali-resistant elements 200 can be further prevented from falling off the wall of the accommodating chamber 110.

Referring to fig. 3 and 4, it can be understood that, in the case that the connection portion 210 is inserted into the connection groove 220, an expansion joint (not shown) is formed between the connection portion 210 and the deepest groove wall of the connection groove 220.

Like this, when carrying out high-temperature roasting to lithium cell material or sodium cell material, the expansion joint can reserve the thermal expansion space for alkali erosion resistant piece 200 for connecting portion 210 can be followed the degree of depth direction motion of connecting groove 220, prevents that alkali erosion resistant piece 200 that the coefficient of thermal expansion is big from taking place the thermal expansion and propping apart the casket body 100 that the coefficient of thermal expansion is little, makes above-mentioned casket-like bowl have stronger security performance.

Referring to fig. 1, it can be understood that the bottom wall of the accommodating chamber 110 is a rectangular bottom wall, and the side walls of the accommodating chamber 110 are rectangular side walls, and the rectangular side walls are arranged around the edge of the bottom wall of the accommodating chamber 110.

Specifically, the alkali-resistant member 200 is a rectangular alkali-resistant member laid on a rectangular bottom wall (not shown) and rectangular side walls (not shown), and has an area of 16cm or more²The thickness of the rectangular alkali-resistant member is between 1mm and 10 mm.

The alkali-resistant member 200 has a large thermal expansion coefficient of 7X 10^-6To 8X 10^-6Therefore, when the diameter or length and width of the alkali-resistant member 200 is greater than 200mm, the alkali-resistant member 200 is prone to cracking during the high-temperature baking process, and thus, the plurality of alkali-resistant members 200 are laid on the cavity wall of the accommodating cavity 110, so that the lithium battery material or sodium battery material can be isolated from the cavity wall of the accommodating cavity 110, and the alkali-resistant member 200 can be prevented from cracking during the high-temperature baking process.

Further, the material of the sagger body 100 is mainlyIs mullite, mullite-cordierite or corundum mullite, and has an expansion coefficient of 1.5 × 10^-6To 5.3X 10^-6Within the range of (1).

In this way, the plurality of rectangular alkali-resistant members 200 adhered to the rectangular bottom wall of the accommodating chamber 110 and the rectangular side walls of the accommodating chamber 110 can fully cover the walls of the accommodating chamber 110. In addition, the sagger body 100 having a small thermal expansion coefficient can further protect the alkali-resistant member 200 and prevent the alkali-resistant member 200 from being broken during high-temperature firing.

Referring to fig. 1 to 4, it can be understood that the alkali-resistant member 200 is a ceramic member.

Specifically, the material of the ceramic part may be at least one of an aluminum oxide material, an aluminum oxide modified material, a zirconium oxide modified material, a magnesium oxide modified material, and the like, wherein the aluminum oxide modified material is obtained by adding a small amount of rare earth materials such as zirconium oxide or yttrium oxide to an aluminum oxide material, the zirconium oxide modified material is obtained by adding a small amount of rare earth materials such as yttrium oxide to a zirconium oxide material, and the magnesium oxide modified material is obtained by adding a small amount of rare earth materials such as zirconium oxide or yttrium oxide to a magnesium oxide material.

Specifically, the porosity of the ceramic part is less than 1%, and the water absorption of the ceramic part is less than 1%.

In this way, in the process of high-temperature roasting of the lithium battery material or the sodium battery material, the ceramic piece with the porosity of less than 1% and the water absorption of less than 1% does not absorb the lithium source in the lithium battery material or the sodium source in the sodium battery material, so that the sagger does not absorb the lithium source in the lithium battery material or the sodium source in the sodium battery material, and further, the defect of the lithium battery or the sodium battery product can be avoided. Meanwhile, the ceramic member with the porosity of less than 1% and the water absorption of less than 1% has good compactness, so that the lithium source in the lithium battery material or the sodium source in the sodium battery material can be further prevented from being absorbed by the sagger.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A sagger, characterized in that it comprises:

the sagger body is provided with a containing cavity; and

the alkali erosion resistant pieces are paved on the cavity wall of the accommodating cavity and can fully cover the cavity wall of the accommodating cavity.

2. The sagger of claim 1, wherein said alkali-resistant element adheres to walls of said containment chamber.

3. The sagger of claim 2, wherein said alkali-resistant element is adhered to the walls of said containment cavity by a high temperature ceramic adhesive.

4. The sagger of claim 2, wherein there are expansion joints between adjacent sheets of said alkali-resistant element.

5. The sagger of claim 1, wherein the alkali-resistant member is provided with a connecting portion and a connecting groove, the connecting portion and the connecting groove being respectively provided on opposite sides of the alkali-resistant member;

6. Sagger as claimed in claim 5, characterized in that with said connection section passing through said connection groove, there is an expansion joint between said connection section and the deepest groove wall of said connection groove.

7. Sagger according to claim 1, characterized in that said bottom wall of said housing cavity is a rectangular bottom wall and said side walls of said housing cavity are rectangular side walls, said rectangular side walls being provided around the edges of said bottom wall of said housing cavity.

8. Sagger according to claim 7, characterized in that said element is a rectangular element, laid on said rectangular bottom wall and on said rectangular side walls, having an area greater than or equal to 16cm²And the thickness of the rectangular alkali-resistant erosion piece is between 1mm and 10 mm.

9. Sagger according to claim 1, characterized in that said element resistant to alkaline attacks is a ceramic element.

10. The sagger of claim 9, wherein said ceramic element has a porosity of less than 1% and a water absorption of less than 1%.