CN212870780U

CN212870780U - Non-burning sagger for sintering lithium battery anode material

Info

Publication number: CN212870780U
Application number: CN202021788795.4U
Authority: CN
Inventors: 吴锡培; 周志强; 申青龙
Original assignee: GUIYANG MINGTONG FURNACE CHARGE CO Ltd
Current assignee: GUIYANG MINGTONG FURNACE CHARGE CO Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-04-02
Anticipated expiration: 2030-08-25

Abstract

The utility model relates to a superhard materials technical field, in particular to lithium cell cathode material sintering is with not burning saggar. The structure comprises a sagger base made of mullite material and a sagger body made of cordierite material, wherein a groove for embedding the sagger body is formed in the sagger base, and the sagger body is embedded in the groove; the sagger body comprises two long-edge sagger body walls which are symmetrically arranged, two short-edge sagger body walls which are symmetrically arranged, and a bottom plate, wherein the two long-edge sagger body walls, the two short-edge sagger body walls and the one short-edge sagger body walls enclose a cuboid structure with an open top between the bottom plates, and arc-shaped heat dissipation grooves are formed in the long-edge sagger body walls and the short-edge sagger body walls. The utility model provides an among the prior art sagger at lithium cell cathode material sintering drying inhomogeneous to and the depth of drying is not enough, and the relatively poor problem of corrosion resisting property.

Description

Non-burning sagger for sintering lithium battery anode material

Technical Field

The utility model relates to a superhard materials technical field, in particular to lithium cell cathode material sintering is with not burning saggar.

Background

The main constituent materials of the lithium ion battery include electrolyte, isolating material, anode and cathode materials and the like. The positive electrode material occupies a large proportion (the mass ratio of the positive electrode material to the negative electrode material is 3: 1-4: 1), and the performance of the lithium ion battery is directly influenced by the performance of the positive electrode material, so that the cost directly determines the cost of the battery.

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 common sagger is adopted for drying the cathode material of the conventional lithium battery and is generally a square, round or oval container, so that the problems of uneven drying, insufficient drying depth and poor corrosion resistance exist during the process of calcining and drying the cathode material of the lithium battery.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a lithium battery anode material sintering of dry even, the enough and corrosion resisting property of the depth of drying is with not burning saggar.

In order to solve the technical problem, the utility model discloses a technical scheme does: the non-burning saggar for sintering the lithium battery positive electrode material comprises a saggar base made of mullite material and a saggar body made of cordierite material, wherein a groove for embedding the saggar body is formed in the saggar base, and the saggar body is embedded in the groove; the sagger body comprises two long-edge sagger body walls which are symmetrically arranged, two short-edge sagger body walls which are symmetrically arranged, and a bottom plate, wherein the two long-edge sagger body walls, the two short-edge sagger body walls and the one short-edge sagger body walls enclose a cuboid structure with an open top between the bottom plates, and arc-shaped heat dissipation grooves are formed in the long-edge sagger body walls and the short-edge sagger body walls.

The box bowl bodies are provided with a plurality of box bowl bodies, and the box bowl bodies are sequentially stacked from bottom to top.

The bottom plate is provided with a cross-shaped groove, and the cross-shaped groove is integrally arranged on the bottom surface of the bottom plate.

The depth of the recess is no greater than one fifth of the height of the cartridge bowl.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses an adopt the preparation material of mullite as the casket-like bowl base, the casket-like bowl base that the field mullite material was made possesses the performance of mullite for it not only has intensity height, and wear-resisting high temperature resistant, can improve its life, and, set up the recess in the base, be used for embedding to set up the casket-like bowl body, make the casket-like bowl body can not appear the phenomenon of removal in the sintering drying process, avoid placing the lithium cell positive electrode material therein and take place to remove, thereby solved the casket-like bowl body in the sintering process, easy because the sintering temperature improves, the problem that the stress increase takes place to remove; further adoption synthetic cordierite makes the casket-like bowl body that forms, and it has possessed the characteristic of cordierite for it not only has high temperature resistant and corrosion-resistant performance, and its coefficient of thermal expansion is lower, and the thermal stress that produces during the use is littleer, thereby makes it more even when dry lithium cell anode material, and the cooperation is the arc radiating groove that sets up on its alms bowl body wall, makes its result of use better.

Drawings

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

FIG. 2 is a schematic structural view of the sagger base of the present invention;

FIG. 3 is a schematic view of the bottom structure of the sagger body of the present invention;

fig. 4 is a schematic perspective view of the cassette bowl of the present invention.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-4, the non-fired saggar for sintering the lithium battery anode material of the present invention includes a saggar base 1 made of mullite material and a saggar body 2 made of cordierite material, wherein a groove 3 for embedding the saggar body 2 is formed in the saggar base 1, and the saggar body 2 is embedded in the groove 3; the box pot body 2 comprises two long-edge pot body walls 21 which are symmetrically arranged, two short-edge pot body walls 22 which are symmetrically arranged, and a bottom plate 23, wherein the long-edge pot body walls 21, the short-edge pot body walls 22 and the short-edge pot body walls 22 enclose a cuboid structure with an open top between the bottom plates 23, and arc-shaped heat dissipation grooves 4 are formed in the long-edge pot body walls 21 and the short-edge pot body walls 22. The utility model discloses in, the cordierite material has added the mullite material at the in-process of making casket alms bowl body 2, and its proportion of adding mixes according to cordierite and mullite proportion for 4:6, pours the shaping after mixing again, and the casket alms bowl body 2's that makes like this coefficient of thermal expansion is less relatively to can improve lithium cell cathode material in the sintering drying process, make its drying more even.

In order to facilitate sintering and drying of the lithium battery anode material, a plurality of the box pot bodies 2 are arranged, and the box pot bodies 2 are sequentially stacked from bottom to top. Thus, during the stacking process, the curved heat dissipation grooves 4 provided in the bowl walls of the cassette bowls 2 will function, i.e. will not be covered by the seal due to the stacking of another cassette bowl 2 on its cassette bowl 2, which will cause the temperature in the cassette bowl 2 to be too high and affect the drying effect.

And in order to improve the utility model discloses a life avoids it to appear the phenomenon of ftractureing when sintering be provided with "ten" font recess 5 on the bottom plate 23, "ten" font recess 5 an organic whole set up in on the bottom surface of bottom plate 23, set up "ten" font recess 5 on its bottom plate 23 promptly for bottom plate 23 is when sintering, and the inflation that can not produce because of the rising of temperature makes the casket body 2 ftracture, this very big improvement the life of casket body 2.

In order to ensure the drying effect of the material in the lowest sagger body 2, the depth of the groove 3 is not higher than one fifth of the height of the sagger body 2, so that the drying effect of the lithium battery anode material in the lowest sagger body 2 is more uniform.

Particularly, the utility model discloses an adopt the preparation material of mullite as the saggar base, the saggar base that field mullite material was made possesses the performance of mullite for it not only has intensity height, and wear-resisting high temperature resistant, can improve its life, and, set up the recess in the base, be used for embedding to set up the casket alms bowl body, make the casket alms bowl body can not appear the phenomenon of removal in the sintering drying process, avoid placing the lithium cell positive electrode material therein and take place to remove, thereby solved the casket alms bowl body in the sintering process, easy because sintering temperature improves, the problem that the stress increase takes place to remove; further adoption synthetic cordierite makes the casket-like bowl body that forms, and it has possessed the characteristic of cordierite for it not only has high temperature resistant and corrosion-resistant performance, and its coefficient of thermal expansion is lower, and the thermal stress that produces during the use is littleer, thereby makes it more even when dry lithium cell anode material, and the cooperation is the arc radiating groove that sets up on its alms bowl body wall, makes its result of use better.

In order to verify the utility model discloses with the corrosion resisting ability of the saggar among the prior art, get the saggar of purchase on the market and the utility model discloses the contrast experiment of corrosion resisting property has been done, the experimental condition is: and (3) keeping the temperature at 1040 ℃ for 4 hours, wherein the powder is prepared according to the following steps of: cobalt oxide, in a molar ratio of 1: 1. the test result shows that the corrosion resistance of the utility model is obviously superior to the corrosion resistance of the saggars purchased in the market.

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 described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a lithium cell cathode material sintering is with not burning saggar which characterized in that: the structure comprises a sagger base (1) made of mullite material and a sagger body (2) made of cordierite material, wherein a groove (3) used for being embedded into the sagger base (2) is formed in the sagger base (1), and the sagger body (2) is embedded into the groove (3); the box pot body (2) comprises two long-edge pot body walls (21) which are symmetrically arranged, two short-edge pot body walls (22) which are symmetrically arranged, and a bottom plate (23), wherein the long-edge pot body walls (21), the short-edge pot body walls (22) and the short-edge pot body walls (22) form a cuboid structure with an opening at the top between the bottom plate (23), and arc-shaped heat dissipation grooves (4) are formed in the long-edge pot body walls (21) and the short-edge pot body walls (22).

2. The lithium battery positive electrode material sintering non-firing sagger as claimed in claim 1, wherein: the box pot bodies (2) are arranged in a plurality, and the box pot bodies (2) are sequentially stacked from bottom to top.

3. The lithium battery positive electrode material sintering non-firing sagger as claimed in claim 1, wherein: the bottom plate (23) is provided with a cross-shaped groove (5), and the cross-shaped groove (5) is integrally arranged on the bottom surface of the bottom plate (23).

4. The lithium battery positive electrode material sintering non-firing sagger as claimed in claim 1, wherein: the depth of the recess (3) is not greater than one fifth of the height of the cassette bowl (2).