阅读说明：本技术 一种锂电池脱水预烧辊道炉结构 (Lithium cell dehydration roller hearth furnace structure of presintering ) 是由 谭俊峰 汪妮思 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种锂电池脱水预烧辊道炉结构,包括炉体,所述炉体中设有用于加热锂电池的炉腔；保温纤维板,所述保温纤维板四面环绕于炉腔外壁,用于保持炉腔内的温度；其中：所述保温纤维板顶部和两侧面内壁上均贴合有水汽隔板,炉腔的底部设有V型的排水腔,所述排水腔的两端与两侧面的水汽隔板相接,所述排水腔连接有用于向外排水的排水管道。本发明的优点是：通过在保温材料内设置水汽隔板,能够在锂电池原料进行预烧时,将原料中加热析出的水蒸气冷凝,形成液态水,液态水再通过与水汽隔板相连的V型排水腔排出炉腔,水汽隔板的设置能够将水汽与保温材料隔绝,避免保温材料吸收水汽影响自身寿命,降低保温效果,也能够防止设备的漏电现象。(The invention discloses a lithium battery dehydration and pre-sintering roller furnace structure which comprises a furnace body, wherein a furnace chamber for heating a lithium battery is arranged in the furnace body; the heat-preservation fiber board surrounds the outer wall of the furnace chamber on four sides and is used for keeping the temperature in the furnace chamber; wherein: the water vapor partition plates are attached to the inner walls of the top and the two side faces of the heat-insulating fiber plate, the bottom of the furnace chamber is provided with a V-shaped water drainage cavity, the two ends of the water drainage cavity are connected with the water vapor partition plates of the two side faces, and the water drainage cavity is connected with a water drainage pipeline for draining water outwards. The invention has the advantages that: through setting up the steam baffle in the insulation material, can burn in at the lithium cell raw materials, with the vapor condensation that the heating is appeared in the raw materials, form liquid water, liquid water is again through the V type drainage chamber discharge furnace chamber that links to each other with the steam baffle, and setting up of steam baffle can be isolated steam and insulation material, avoids insulation material to absorb steam and influences self life-span, reduces the heat preservation effect, also can prevent the electric leakage phenomenon of equipment.)

1. The utility model provides a lithium cell dehydration roller hearth furnace structure of presintering which characterized in that: comprises that

The furnace body is internally provided with a furnace chamber for heating the lithium battery;

the heat-preservation fiber board surrounds the outer wall of the furnace chamber on four sides and is used for keeping the temperature in the furnace chamber;

wherein: the water vapor partition plates are attached to the inner walls of the top and the two side faces of the heat-insulating fiber plate, the bottom of the furnace chamber is provided with a V-shaped water drainage cavity, the two ends of the water drainage cavity are connected with the water vapor partition plates of the two side faces, and the water drainage cavity is connected with a water drainage pipeline for draining water outwards.

2. The lithium battery dehydration pre-sintering roller furnace structure of claim 1, characterized in that: the cross section of the water vapor baffle is in a wave shape.

3. The lithium battery dehydration pre-firing roller furnace structure of claim 1 or 2, characterized in that: the water vapor partition plate is made of stainless steel.

4. The lithium battery dehydration pre-firing roller furnace structure of claim 1 or 2, characterized in that: and a vent hole is communicated between the water vapor partition plate and the outside.

5. The lithium battery dehydration pre-sintering roller furnace structure of claim 3, characterized in that: and a vent hole is communicated between the water vapor partition plate and the outside.

6. The lithium battery dehydration pre-sintering roller furnace structure of claim 4, characterized in that: and nitrogen is introduced into the vent hole.

7. The lithium battery dehydration pre-sintering roller furnace structure of claim 5, characterized in that: and nitrogen is introduced into the vent hole.

8. The lithium battery dehydration pre-firing roller furnace structure of claim 1 or 2, characterized in that: and refractory bricks attached to the water vapor partition plates are further arranged on the four inner walls of the furnace chamber.

9. The lithium battery dehydration pre-firing roller furnace structure of claim 8, wherein: the refractory brick is made of corundum composite heavy brick.

10. The lithium battery dehydration pre-sintering roller furnace structure of claim 1, characterized in that: the lithium battery heating furnace is characterized in that a box body used for loading lithium battery raw materials is arranged in the furnace chamber, the box body is transmitted through a roller way, the roller way is rotatably installed in the furnace chamber, and a heating silicon carbide rod is arranged below the roller way.

Technical Field

The invention relates to lithium battery processing equipment, in particular to a furnace body structure in a lithium battery dehydration and pre-sintering roller furnace.

Background

With the technical progress of new energy electric automobiles, the rapid development of power lithium battery materials is driven. Generally speaking, the most widely used power batteries mainly include lithium iron phosphate batteries, lithium manganate batteries, lithium cobaltate batteries, and ternary lithium batteries (ternary nickel cobalt manganese), wherein the lithium iron phosphate batteries include a dehydration and pre-sintering process of iron phosphate powder in a production and manufacturing process.

30% -40% of free water and crystal water exist in ferric phosphate powder in the lithium battery anode material, when a roller bed furnace dehydration pre-sintering process is used, a large amount of water vapor can be generated in a temperature rising section, and the water vapor is fatal to an aluminum silicate fiber material in a refractory heat-insulating material. The heat insulation material absorbs a large amount of water vapor, so that the heat insulation effect is reduced, the service life is shortened, and even the electric leakage phenomenon of equipment is generated, thereby bringing certain potential safety hazards to operators. The utility model discloses a chinese utility model that publication is CN208779853U discloses a lithium cell production is with effectual raw materials drying device of dehydration, the power distribution box comprises a box body, the welding has the fixed plate on one side inner wall of box, and the top welding of fixed plate has the fixed ring seat, and the top of fixed ring seat opens there is the ring channel, the ball that the equidistance distributes has been placed in the ring channel, the rolling disc has been placed at the top of ball, and the rolling disc is located the inside of box, the welding has the tooth that the equidistance distributes on the outer wall of rolling disc, open the bottom of rolling disc has suitable groove. The utility model discloses a lithium battery raw materials in the internal fixation box is driven and is rotated the dehydration, nevertheless does not collect and discharge steam, causes the harm to insulation material's durability.

Disclosure of Invention

The invention aims to provide a dewatering and presintering roller furnace structure for a lithium battery, which can effectively solve the problem that water vapor damages a heat-insulating material in the dewatering and presintering process of the lithium battery by arranging a water vapor partition plate in the heat-insulating material.

In order to solve the technical problems, the invention is realized by the following technical scheme:

a dehydration and presintering roller furnace structure for a lithium battery comprises a furnace body, wherein a furnace chamber for heating the lithium battery is arranged in the furnace body; the heat-preservation fiber board surrounds the outer wall of the furnace chamber on four sides and is used for keeping the temperature in the furnace chamber; wherein: the water vapor partition plates are attached to the inner walls of the top and the two side faces of the heat-insulating fiber plate, the bottom of the furnace chamber is provided with a V-shaped water drainage cavity, the two ends of the water drainage cavity are connected with the water vapor partition plates of the two side faces, and the water drainage cavity is connected with a water drainage pipeline for draining water outwards.

Preferably, the cross section of the water vapor baffle is in a wave shape, the wave shape is set to increase the surface area of the water vapor baffle, in the pre-burning process, water vapor in the raw material is evaporated and then contacts the water vapor baffle to be rapidly condensed into liquid, and the water vapor baffle can also be in other shapes capable of increasing the surface area, for example: folds, square folds, etc.

Furthermore, the material of steam baffle is stainless steel, and the material characteristic of stainless steel can make steam baffle can not the oxidation corrosion when the water proof, produces rusty spot, has increased steam baffle's life-span.

Preferably, a vent hole is communicated between the water vapor partition plate and the outside, and gas is injected into the vent hole to pre-cool water vapor in the water vapor partition plate for condensation.

Furthermore, nitrogen is introduced into the vent hole, the gas property of the nitrogen is stable, and the nitrogen can pass through the heat-insulating material when entering from the vent hole, so that the preheating effect is obtained.

Preferably, still be equipped with the resistant firebrick with the laminating of steam baffle on the furnace chamber four sides inner wall, when presintering, can reach higher temperature in the furnace chamber, resistant firebrick can be isolated steam baffle and high temperature, avoids the steam baffle to warp under the high temperature condition and leads to steam to collect the inefficacy, has increased the life-span of steam baffle.

Furthermore, the refractory brick is made of corundum composite heavy brick, and the corundum composite heavy brick improves the high-temperature resistance, acid and alkali corrosion resistance and the stability of the roller hearth furnace structure.

Preferably, be equipped with the casket body that is used for loading lithium cell raw materials in the furnace chamber, the casket body leads to the roll table and transmits, the roll table rotates and installs in the furnace chamber, the roll table below is provided with the heating elema, and the casket body is built-in to go into the raw materials, passes through the roll table conveying and advances the furnace chamber in again, starts the heating elema and presinteres, and application method is convenient, can take out the raw materials through the roll table once more after the presintering, has improved the practicality of roll table furnace structure.

Compared with the prior art, the invention has the advantages that:

through setting up the steam baffle in the insulation material, can burn in at lithium battery raw materials, with the vapor condensation that heating was appeared in the raw materials, form liquid water, liquid water again through with the V type that the steam baffle links to each other water drainage chamber discharge furnace chamber can, the setting of steam baffle can be isolated steam and insulation material, avoid insulation material to absorb steam and influence self life-span, reduce the heat preservation effect, also can prevent the electric leakage phenomenon of equipment.

Drawings

FIG. 1 is a sectional view of a roller bed furnace according to the present invention;

in the figure:

10. a furnace body; 11. a furnace chamber; 12. a heat-insulating fiberboard; 13. a water vapor baffle plate; 14. a drainage cavity; 15. a water discharge pipeline; 16. a vent; 17. a refractory brick; 18. a case body; 19. a roller bed; 20. and heating the silicon carbide rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, an embodiment of a furnace structure of a lithium battery dehydration and pre-burning roller bed 19 of the present invention includes a furnace body 10, wherein a furnace chamber 11 for heating a lithium battery is arranged in the furnace body 10; furnace chamber 11 is laminated on the inner wall all around has thermal insulation fiber board 12, be equipped with steam baffle 13 between thermal insulation fiber board 12 and the furnace chamber 11, steam baffle 13 sets up on top and two sides, thermal insulation fiber board 12 is used for keeping the temperature in the furnace chamber 11, but when the lithium cell raw materials presintered, the water analysis that can make in the raw materials becomes vapor, vapor can be absorbed by insulation material under the condition that does not have steam baffle 13, insulation material's heat insulating ability and life-span can be great receive the influence, consequently, need set up steam baffle 13 and become liquid water with the vapor condensation, V type drainage chamber 14 of rethread furnace chamber 11 bottom and the drainage pipe 15 of being connected with drainage chamber 14 discharge.

The raw materials of lithium cell are loaded through casket body 18, casket body 18 is sent into furnace chamber 11 through roll table 19 again, the bottom of roll table 19 is equipped with heating elema 20, start heating elema 20 and just can burn in the cross section of water vapor baffle 13 to the battery raw materials and be the wave, the wave can greatly increase the surface area of water vapor baffle 13, the area of contact of the steam vapor that produces in 13 and the raw materials burn in has also been increased to the wave, the condensation rate and the condensation capacity of steam have been accelerated, the wave also can be changed into other shapes that can increase water vapor baffle 13 surface area, for example the cockscomb structure, square concavo-convex form and so on. Steam baffle 13 and external connection have vent 16, let in nitrogen gas in the vent 16, nitrogen gas can make the temperature of steam baffle 13 reduce, further accelerate the condensation speed of vapor, and nitrogen gas can pass through insulation material when advancing steam baffle 13 at the circulation, obtain the preheating effect, thermal waste in furnace chamber 11 has been reduced, the stainless steel is generally declared to the material of steam baffle 13, stainless steel's material characteristic can make steam baffle 13 can not by the oxidation corrosion when the water proof, produce the rusty spot, the life-span of steam baffle 13 has been increased.

Referring to fig. 1, an embodiment of a furnace structure of a lithium battery dehydration and pre-burning roller bed 19 of the present invention includes a furnace body 10, wherein a furnace chamber 11 for heating a lithium battery is arranged in the furnace body 10; furnace chamber 11 is laminated on the inner wall all around has thermal insulation fiber board 12, be equipped with steam baffle 13 between thermal insulation fiber board 12 and the furnace chamber 11, steam baffle 13 sets up on top and two sides, thermal insulation fiber board 12 is used for keeping the temperature in the furnace chamber 11, but when the lithium cell raw materials presintered, the water analysis that can make in the raw materials becomes vapor, vapor can be absorbed by insulation material under the condition that does not have steam baffle 13, insulation material's heat insulating ability and life-span can be great receive the influence, consequently, need set up steam baffle 13 and become liquid water with the vapor condensation, V type drainage chamber 14 of rethread furnace chamber 11 bottom and the drainage pipe 15 of being connected with drainage chamber 14 discharge.

The raw materials of lithium cell are loaded through casket body 18, casket body 18 is sent into furnace chamber 11 through roll table 19 again, the bottom of roll table 19 is equipped with heating elema 20, start heating elema 20 and just can burn in the cross section of water vapor baffle 13 to the battery raw materials and be the wave, the wave can greatly increase the surface area of water vapor baffle 13, the area of contact of the steam vapor that produces in 13 and the raw materials burn in has also been increased to the wave, the condensation rate and the condensation capacity of steam have been accelerated, the wave also can be changed into other shapes that can increase water vapor baffle 13 surface area, for example the cockscomb structure, square concavo-convex form and so on. Steam baffle 13 and external connection have vent 16, let in nitrogen gas in the vent 16, nitrogen gas can make the temperature of steam baffle 13 reduce, further accelerate the condensation speed of vapor, and nitrogen gas can pass through insulation material when advancing steam baffle 13 at the circulation, obtain the preheating effect, thermal waste in furnace chamber 11 has been reduced, the stainless steel is generally declared to the material of steam baffle 13, stainless steel's material characteristic can make steam baffle 13 can not by the oxidation corrosion when the water proof, produce the rusty spot, the life-span of steam baffle 13 has been increased. Still be equipped with the resistant firebrick 17 with the laminating of steam baffle 13 on the four sides inner wall of furnace chamber 11, when presintering, can reach higher temperature in the furnace chamber 11, resistant firebrick 17 can be isolated steam baffle 13 and high temperature, avoid steam baffle 13 to warp under the high temperature condition and lead to steam to collect inefficacy, the life-span of steam baffle 13 has been increased, and resistant firebrick 17's material is compound heavy brick of corundum, adopt compound heavy brick of corundum to improve resistant high temperature acid and alkali corrosion resistance of resistant firebrick 17, the stability of 19 stove structures of roll table has been improved.

The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.