CN215413196U

CN215413196U - Sagger convenient for gas circulation

Info

Publication number: CN215413196U
Application number: CN202121564432.7U
Authority: CN
Inventors: 陈庆丰
Original assignee: BASF Shanshan Battery Materials Co Ltd
Current assignee: BASF Shanshan Battery Materials Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-01-04
Anticipated expiration: 2031-07-09

Abstract

The utility model provides a sagger convenient for gas circulation, which comprises a sagger body; the sagger body is internally provided with an accommodating cavity; each side wall of the sagger body is provided with two vent grooves, and the two vent grooves are an upper vent groove formed in the top of the side wall and a surface vent groove formed in the outer surface of the side wall respectively; the opening of the upper vent groove faces upwards, one end of the surface vent groove is communicated with the upper vent groove, and the other end of the surface vent groove extends to the bottom end of the side wall. In the utility model, the upper vent groove is arranged to enable the gas to be exchanged along the horizontal direction, and the surface vent groove is additionally arranged to enable the gas to be convected in the vertical direction, so that the gas exchange efficiency is greatly improved; in addition, the quality difference between sintered products is further reduced.

Description

Sagger convenient for gas circulation

Technical Field

The utility model relates to the technical field of lithium battery production devices, in particular to a sagger convenient for gas circulation.

Background

The main constituent materials of the lithium ion battery comprise electrolyte, isolating materials, positive and negative electrode materials and the like, wherein the positive electrode materials occupy a large proportion, and the performance of the lithium ion battery is directly influenced by the performance of the positive electrode materials. Sagger is one of kiln furniture, and in the process of firing ceramic ware, in order to prevent the destruction and contamination of green body and glaze surface by gas and harmful substance, the ceramic ware and green body are placed in a container made of refractory material and fired, and said container is called sagger, also called sagger.

In the prior art, a sagger is used to calcine the positive electrode material. Usually, a plurality of saggers are stacked, and then the stacked saggers are arranged in parallel in a kiln to be sintered simultaneously. However, after a plurality of saggars are stacked and arranged in parallel, air or pure oxygen supplied from the outside hardly reaches a sintering reaction part in the saggars, and gases such as carbon dioxide generated by a sintering reaction are hardly discharged in time, so that a phenomenon of high local temperature and large temperature difference in a hearth occurs, and further, the quality difference between sintered products is large. Therefore, in the prior art, the side wall of the sagger is provided with the vent grooves so that the gas in the sagger can be exchanged with the gas between the hearths, and the purpose of reducing quality difference is achieved. However, the vent grooves formed in the side walls of the saggar only allow the gas to be slowly exchanged in the horizontal direction, and thus have a disadvantage of low gas exchange efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a sagger which can enable gas to generate convection in the vertical direction so as to improve the gas exchange efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a sagger convenient for gas circulation comprises a sagger body; the sagger body is internally provided with an accommodating cavity; each side wall of the sagger body is provided with two vent grooves, and the two vent grooves are an upper vent groove formed in the top of the side wall and a surface vent groove formed in the outer surface of the side wall respectively; the opening of the upper vent groove faces upwards, one end of the surface vent groove is communicated with the upper vent groove, and the other end of the surface vent groove extends to the bottom end of the side wall.

Specifically, the side wall of the sagger body and the inner bottom surface of the sagger body are obliquely arranged so as to facilitate the pouring of the sagger.

Specifically, the angle of inclination between the side wall of the sagger body and the inner bottom surface of the sagger body is 93-97 °.

Specifically, the upper vent groove has a trapezoidal cross section.

Specifically, corner vent grooves communicated with the accommodating cavity are formed in four corners of the top of the sagger body; the four corners of sagger body bottom are the fillet structure so that a plurality of when the sagger body piles up the corner air channel can communicate the holding chamber with the exterior space of sagger body.

Specifically, the width of the upper vent groove is 180-220mm, and the depth is 8-12 mm.

Specifically, the width of the surface vent groove is 10-15mm, and the depth is 4-5 mm.

Compared with the prior art, the utility model has the advantages that: the upper vent groove is arranged to enable the gas to be exchanged along the horizontal direction, and the surface vent groove is additionally arranged to enable the gas to be convected in the vertical direction, so that the gas exchange efficiency is greatly improved; in addition, the quality difference between sintered products is further reduced.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic elevation view of the present invention;

fig. 3 is a side view of the present invention.

The reference numerals in the figures denote: 1. a sagger body; 2. a vent channel; 21. an upper vent channel; 22. a surface vent channel; 3. corner vent grooves.

Detailed Description

The utility model will be described in further detail below with reference to the drawings and specific examples.

Example 1

Referring to fig. 1, a sagger convenient for gas circulation includes a sagger body 1; a containing cavity is formed in the sagger body 1; each side wall of the sagger body 1 is provided with two vent grooves 2, and the two vent grooves 2 are an upper vent groove 21 arranged at the top of the side wall and a surface vent groove 22 arranged on the outer surface of the side wall respectively; the upper vent groove 21 opens upward, and one end of the surface vent groove 22 communicates with the upper vent groove 21 and the other end extends to the bottom end of the side wall. The upper vent groove 21 is arranged to enable the gas to be exchanged along the horizontal direction, and the surface vent groove 22 is additionally arranged to enable the gas to be convected in the vertical direction, so that the gas exchange efficiency is greatly improved; in addition, the quality difference between sintered products is further reduced.

Further, the side wall of the sagger body 1 and the inner bottom surface of the sagger body 1 are obliquely arranged so as to be convenient for pouring the sagger. The inclination angle between the side wall of the sagger body 1 and the inner bottom surface of the sagger body 1 is 93-97 degrees. Preferably, the angle of inclination between the side wall of the sagger body 1 and the inner bottom surface of the sagger body 1 is 95 °, so that the opening area of the sagger body 1 is larger than the inner bottom surface area of the sagger body 1 to facilitate the pouring of the sagger.

Further, the upper vent groove 21 has a trapezoidal or rectangular cross section. Preferably, the upper vent groove 21 has a trapezoidal cross section. The upper vent groove 21 adopts a trapezoidal section structure, and has the advantages of high structural stability and good machinability.

Example 2

In the sagger provided in this embodiment, compared to the sagger 1 provided in this embodiment, four corner vent grooves 3 are added, referring to fig. 2 and 3, the corner vent grooves 3 communicated with the accommodating cavity are formed at four corners of the top of the sagger body 1; corner air channel 3 can communicate the outside space of holding chamber and sagger body 1 when the four corners of 1 bottom of sagger body is the fillet structure so that a plurality of 1 piles of sagger body. The gas exchange efficiency can be further improved and the quality variation between sintered products can be reduced by the corner vent grooves 3.

Further, the four corners of the bottom of the sagger body 1 are rounded R15.

In the above embodiment, the size of the sagger body 1 is the conventional size required by the lithium battery industry at present. The width of the upper vent groove 21 is 180-220mm, and the depth is 8-12 mm. The width of the surface vent groove 22 is 10-15mm, and the depth is 4-5 mm. In the prior art, the too large vent groove can influence the arrangement regularity of the saggars, and increase the deflection probability of the saggars, thereby causing the safety accident of furnace blockage. Compared with the prior art, the slotting mode in the embodiment can achieve the dual purposes of improving the gas exchange efficiency and ensuring the stability and the use safety of the device only by arranging relatively small slots, so that the quality difference among a plurality of products can be reduced, and the furnace blockage accident can be avoided.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the utility model, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. A sagger convenient for gas circulation is characterized by comprising a sagger body (1); an accommodating cavity is formed in the sagger body (1); each side wall of the sagger body (1) is provided with two vent grooves (2), and the two vent grooves (2) are an upper vent groove (21) arranged at the top of the side wall and a surface vent groove (22) arranged on the outer surface of the side wall respectively; the opening of the upper vent groove (21) is upward, one end of the surface vent groove (22) is communicated with the upper vent groove (21), and the other end of the surface vent groove extends to the bottom end of the side wall.

2. Sagger for facilitating the circulation of gases according to claim 1, characterized in that the side walls of said sagger body (1) are inclined with respect to the inner bottom surface of said sagger body (1) to facilitate the inversion of the sagger.

3. Sagger for facilitating the circulation of gases according to claim 2, characterized in that the angle of inclination between the side wall of said sagger body (1) and the inner bottom surface of said sagger body (1) is 93-97 °.

4. Sagger for facilitating the circulation of gases according to any of the claims from 1 to 3, characterized in that said upper venting channel (21) has a trapezoidal section.

5. The sagger convenient for gas circulation according to any one of claims 1-3, wherein corner vent grooves (3) communicated with the accommodating cavity are formed at four corners of the top of the sagger body (1); the four corners of the bottom of the sagger body (1) are of a round corner structure, so that the corner vent grooves (3) can communicate the accommodating cavity with the external space of the sagger body (1) when the sagger bodies (1) are stacked.

6. Sagger for facilitating the circulation of gases according to any of the claims from 1 to 3, characterized in that said upper venting channel (21) has a width of 180 and 220mm and a depth of 8-12 mm.

7. Sagger for facilitating the circulation of gases according to claim 6, characterized in that said surface aeration channel (22) has a width comprised between 10 and 15mm and a depth comprised between 4 and 5 mm.