CN114152088B - Sintering processing technology and processing system for high-quality lithium battery anode material - Google Patents

Sintering processing technology and processing system for high-quality lithium battery anode material Download PDF

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Publication number
CN114152088B
CN114152088B CN202111415124.2A CN202111415124A CN114152088B CN 114152088 B CN114152088 B CN 114152088B CN 202111415124 A CN202111415124 A CN 202111415124A CN 114152088 B CN114152088 B CN 114152088B
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CN
China
Prior art keywords
sintering
sagger
groove
lithium battery
side wall
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Application number
CN202111415124.2A
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Chinese (zh)
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CN114152088A (en
Inventor
周时新
胡涛
刘亮
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Jiangsu Runhong High Temperature Kiln Co ltd
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Jiangsu Runhong High Temperature Kiln Co ltd
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Priority to CN202111415124.2A priority Critical patent/CN114152088B/en
Publication of CN114152088A publication Critical patent/CN114152088A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/045—Furnaces with controlled atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D5/0006—Composite supporting structures
    • F27D5/0012—Modules of the sagger or setter type; Supports built up from them
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • F27B2009/382—Charging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a high-quality lithium battery anode material sintering processing technology and a processing system, wherein the processing technology comprises the following steps: a first step of: the method comprises the steps of (1) preliminary sagger compression molding, firstly placing sagger powder into a molding cavity of a pressing machine, and then pressing the sagger powder into a container structure with a preliminary shape through a die on the pressing machine; transferring the preliminarily formed sagger to a processing equipment position through a transfer device for processing; and a second step of: processing the sagger, namely forming an aperture on the sagger through processing equipment and processing a structure needing to be fixed, and putting a lithium battery anode material into the sagger after the processing is finished; and a third step of: and (3) sintering the lithium battery, namely placing the sagger filled with the lithium battery anode material into a roller way combustion furnace for sintering, and then performing cold air cooling treatment. The invention provides a high-quality lithium battery anode material sintering processing technology and a processing system, which have the effect of sintering the lithium battery anode material with high performance.

Description

Sintering processing technology and processing system for high-quality lithium battery anode material
Technical Field
The invention relates to the field of lithium battery anode material sintering.
Background
The sagger is a container for placing sintering materials for sintering, the sagger powder is pressed and preliminarily formed through a pressing machine, the sagger powder is required to be discharged and then pressed during pressing, and then the preliminarily formed sagger is required to be transported; therefore, the transfer can be quickly carried out, and the discharging can be carried out during the transfer, so that the pressing efficiency can be greatly improved; during sintering, the atmosphere in the roller kiln needs to be uniformly diffused, so that the surface of the lithium battery anode material can be more fully contacted, and further, better sintering can be performed; on one hand, the contact between the atmosphere and the lithium battery material can be increased by promoting the flow of the atmosphere in the sintering channel, so that the sintering effect is enhanced; on the other hand, the lithium battery material is driven to move to be more contacted with the atmosphere, so that the sintering effect is improved.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a high-quality sintering processing technology and a processing system for the lithium battery anode material, which have the effect of sintering the lithium battery anode material with high performance.
The technical scheme is as follows: in order to achieve the above purpose, the technical scheme of the invention is as follows:
A sintering processing technology of high-quality lithium battery anode material comprises the following processing steps:
a first step of: the method comprises the steps of (1) preliminary sagger compression molding, firstly placing sagger powder into a molding cavity of a pressing machine, and then pressing the sagger powder into a container structure with a preliminary shape through a die on the pressing machine; transferring the preliminarily formed sagger to a processing equipment position through a transfer device for processing;
and a second step of: processing the sagger, namely forming an aperture on the sagger through processing equipment and processing a structure needing to be fixed, and putting a lithium battery anode material into the sagger after the processing is finished;
and a third step of: and (3) sintering the lithium battery, namely placing a sagger filled with the lithium battery anode material into a roller way combustion furnace for sintering, and then performing cold air cooling treatment so as to cool the sintered lithium battery anode material to normal temperature.
Further, in the first step, the sagger powder is pressed under the condition of 140-200 Mpa; during the transferring, the preliminarily formed sagger stays in a space of 90-110 ℃ for 10 hours
Further, during sintering, the sagger sequentially passes through a preheating zone, a heating sintering zone, a heat preservation zone and a cooling zone in the roller way combustion furnace; the inner wall of the heating sintering area is made of ceramic material; the heating sintering zone blows hot air into the preheating zone through an air blowing device, and the length of the heating sintering zone is 3 times of that of the preheating zone;
The sagger passes through the cooling zone, the speed is gradually reduced until stopping, and the sagger passes through the cooling zone at a constant speed after staying for 0.5 hour.
Further, the press includes a press platform; a forming groove is formed in the middle of the pressing platform; a lower die structure is arranged in the bottom of the forming groove; an upper die structure is arranged right above the forming groove at intervals; the pressing end of the upper die structure moves in and out of the forming groove to be matched with the lower die structure to press the sintering sagger for preliminary forming; a pushing structure is arranged on one side of the pressing platform; the pushing structure moves back and forth on the pressing platform to push the preliminarily formed sintering sagger; an embedded groove is formed in the edge of the notch of the forming groove; elastic pieces are correspondingly filled in the embedded grooves; the upper die structure comprises an upper die core; the driving device is in driving connection with one end of the upper mold core, which is far away from the pressing platform; the upper mold core moves downwards to be correspondingly embedded into the embedded groove;
the lower die structure comprises a fixed die core; the fixed mold core is fixedly arranged in the middle of the bottom of the forming groove, and the top end of the fixed mold core is lower than the notch of the forming groove; a rectangular channel is formed between the fixed mold core and the inner wall of the forming groove; a side mold core is correspondingly arranged in the rectangular channel; and the forming groove bottom driving device is in driving connection with the bottom end of the side mold core.
Further, the pushing structure comprises a fixed block and a pushing block; the fixed block is fixed on one side edge of the pressing platform; the driving device on one side of the fixed block is in driving connection with one end of the pushing block; the pushing block reciprocates between the upper die structure and the lower die structure, and when the side die cores eject the sintering sagger, the pushing block pushes the preliminarily formed sintering sagger to move to a conveying belt at one side;
the bottom of the pushing block is arranged in a sliding manner with the surface of the pressing platform; the bottom of the pushing block is provided with a release groove; a discharging structure is arranged in the discharging groove; when the release groove corresponds to the forming groove, the discharging structure correspondingly releases sagger powder into the forming groove; the discharging structure comprises a flow guiding structure and a discharging disc; the flow guiding structure comprises a connecting rod and a flow guiding circular block; one end of the connecting rod is fixed in the middle of the top of the release groove; a diversion round block is fixedly arranged at the other end of the connecting rod; the bottom surface of the diversion round block is flush with the table surface of the pressing platform; the side wall of the diversion round block is arranged at intervals with the inner wall of the release groove; the edge of the flow guide round block is a curved surface; a discharging disc is sleeved on the connecting rod at one end close to the diversion round block in a ring mode, and the rotating device on the connecting rod is in driving connection with the discharging disc; the side wall of the discharging plate is attached to the inner wall of the release groove in a sliding manner; a storage chamber is formed between the discharging disc and the top of the release groove; a feed inlet is formed in the top of the storage chamber;
A diversion channel is formed between the side wall of the diversion round block and the release groove; the discharging disc is correspondingly covered on the diversion channel; a chute is formed in the discharging disc; the storage chamber is communicated with the diversion channel through a chute; the sliding groove is arc-shaped, and the middle part of the inner wall of the bottom surface of the sliding groove is concavely arranged; the vibrating piece is arranged on the concave bottom surface of the chute; the vibrating device in the discharging disc is in driving connection with the vibrating piece; a closed structure is arranged at the discharge end of the material sliding groove; the closure structure includes a closure tab; a feeding and discharging groove is formed at the discharge hole of the sliding groove; the sealing sheets are correspondingly arranged in the inlet and outlet grooves, and the driving device in the inlet and outlet grooves is in driving connection with the sealing sheets; the closing piece is correspondingly switched on and off with the chute.
Further, the roller way combustion furnace comprises a sintering channel; sintering sagger is arranged on the rotary roller at the bottom of the sintering channel at intervals; the top of the sintering channel is provided with a push-scattering structure; the middle part of the push-dispersion structure protrudes to the bottom of the sintering channel and is arranged at the sintering sagger; the periphery of the push-dispersion structure forms a heat collecting area; the rotating end of the pushing and radiating structure rotates to push hot air in the heat and radiating area to the sintering sagger;
The push-off structure comprises a lug and a rotary structure; the inner wall of the top of the sintering channel is fixedly provided with a lug; a plurality of heat collecting grooves are formed in the side wall of the convex block; the heat collecting groove is semicircular; a rotating structure is arranged on the side wall of the middle part of the lug; the rotating structure comprises a rotating rod; the rotating device on the side wall of the lug is in driving connection with one end of the rotating rod; an arc-shaped push plate is fixedly arranged on the side wall of one side of the rotating rod; the side wall of the arc-shaped push plate is attached to the side wall of the lug in a sliding manner;
a movable cavity is formed in the convex block; the bottoms of the heat collecting grooves are protruded into the movable cavity; the movable cavity is semicircular; the bottom of the heat collecting tank is of an elastic structure; a pushing structure is arranged in the movable cavity; the pushing end of the pushing structure intermittently pushes the convex part at the bottom of the heat collecting tank; the pushing structure comprises a semicircular block and a telescopic rod; the telescopic device at the top of the middle part of the movable cavity is in driving connection with one end of a telescopic rod; a semicircular block is fixedly arranged at the other end of the telescopic rod; the side walls of the semicircular blocks are arranged at the bottoms of the heat collecting grooves in a contact mode, and the distance between the side walls of the semicircular blocks is set on the inner wall of the movable cavity.
Further, a notch is formed in one side of the bottom of the sintering sagger; a guide plate is fixedly arranged on one side of the sintering channel; the guide plate is arranged corresponding to the notch; a rotating structure is arranged at the bottom of the sintering sagger; one side of the guide plate is meshed with the rotating structure, and the rotating structure drives the lithium battery material in the sintering sagger to rotate;
The rotating structure comprises a matching disc; a round cavity is formed in the bottom of the sintering sagger; a through hole is formed in the middle of the top of the circular cavity; one side of the circular cavity is communicated with the notch; the circular cavity is correspondingly filled with a matched disc in a sliding manner; one end of the supporting rod on the matching disc extends into the inner cavity of the sintering sagger to form an extending end; a tray is fixedly arranged on the extending end of the supporting rod; the matching disc part protrudes into the notch; the side wall of the matching disc is provided with a matching groove in an up-down penetrating way; convex teeth are fixedly arranged on the side wall of the guide plate corresponding to one side of the notch; the convex teeth are correspondingly meshed with the matching grooves;
the top of the sintering sagger is opened, and the tray is correspondingly arranged in the inner cavity of the sintering sagger; the surface of the tray is fixedly provided with a baffle plate; a plurality of partition boards are arranged in a circumferential direction and form a partition with the inner cavity of the sintering sagger; lithium battery materials are correspondingly arranged in the compartments; the partition board is arranged below the top of the sintering sagger; a plurality of compartments are communicated with each other;
a plurality of through holes are formed in the bottom of the sintering sagger in a penetrating manner at positions corresponding to the gaps; the sintering sagger is communicated with the notch through a through hole; the bottom of the partition plate is provided with a communication hole; the bottom of the communication hole penetrates through the tray; the top of the communication hole is communicated with the adjacent compartment; the compartment is communicated with the notch through the communication hole and the through hole; an air suction cavity is formed in the guide plate; a plurality of through holes are formed in the side wall of the suction cavity; the inner wall of the notch and the side wall of the guide plate are arranged in a sliding manner; the through holes are intermittently communicated with the through holes.
Furthermore, a plurality of prismatic sheets are fixedly arranged on the inner wall of the sintering sagger at annular intervals; the plurality of the prismatic sheets are of elastic structures, and diffusion intervals are formed among the plurality of the prismatic sheets; a plurality of stirring sheets are fixedly arranged on the periphery of the rotating structure in the circumferential direction; the rotating structure drives the poking sheets to poke the prismatic sheets to swing and squeeze the prismatic sheets in the diffusion zone; a heat dissipation area is formed between the tray and the inner wall of the sintering sagger; the four corners of the prism sheets are distributed in the heat dissipation areas in the sintering sagger; a plurality of stirring sheets are fixedly arranged on the side wall of the tray in the circumferential direction; the side edges of the plurality of the edge sheets are positioned on the movement track of the stirring sheet; one end of the poking piece, which is far away from the tray (23), is gradually reduced into a curved surface; a plurality of elastic raised strips are fixedly arranged on the curved surface of the poking piece;
the prismatic sheets are distributed in four corners and are respectively arranged in groups; the prismatic sheets of each group are correspondingly arranged at the inner walls of four corners of the sintering sagger; the widths of the rib sheets of each group gradually increase and then gradually decrease; the top of the prism sheet is lower than the top of the sintering sagger; a plurality of semicircular grooves are formed in the side wall of each rib; the semicircular grooves are arranged along the length direction of the prism sheet; the semicircular grooves are arranged at intervals along the height direction of the prism sheet; the semicircular grooves are communicated with the diffusion zone; a plurality of arc-shaped heat conducting strips are fixedly arranged at the notches of the semicircular grooves; the arc-shaped heat conducting strips are arranged at intervals along the length direction of the semicircular groove, and the axes of the arc-shaped heat conducting strips are positioned on the axes of the semicircular groove; heating channels are formed between the arc-shaped heat conducting strips and the semicircular grooves; the heating channel is communicated with the diffusion section through gaps among the arc-shaped heat conducting strips; the diameters of the arc-shaped heat conducting strips gradually increase towards the middle of the sintering sagger, and the distances between the arc-shaped heat conducting strips gradually increase towards the middle of the sintering sagger.
Further, a ventilation structure is arranged on the side wall of the sintering sagger in a circumferential direction; the ventilation structure comprises a turnover plate; the turnover plate is movably embedded in the side wall of the sintering sagger; a plurality of vent holes are formed in the overturning plate in a penetrating manner; the stirring end of the rotating structure correspondingly stirs the plurality of turnover plates to rotate; the sintering sagger is of a rectangular structure; a plurality of accommodating grooves are formed in the middle of the side wall of the sintering sagger; the accommodating groove is correspondingly filled with a turnover plate; connecting rods are fixedly arranged in the middle of the two ends of the turnover plate; one end, far away from the overturning plate, of the connecting rod is embedded into the inner wall of the accommodating groove, and the overturning plate is movably connected with the accommodating groove through the connecting rod; the inner walls of the two sides of the accommodating groove are concave curved surfaces; the inside of the sintering sagger is communicated with the outside through a vent hole and a containing groove;
a magnetic strip is fixedly arranged on the inner wall of one side of the accommodating groove; the two side edges of the turnover plate are fixedly provided with matched magnetic sheets; the matched magnetic sheet and the magnetic strip repel each other; a filling groove is formed in the inner wall of the accommodating groove; a card is arranged in the filling groove; the driving device filled in the bottom of the groove is in driving connection with one corresponding end of the card; the side wall of the edge of the turnover plate is provided with a clamping groove; the notch of the clamping groove is gradually increased; when the turnover plate is correspondingly filled and embedded into the accommodating groove, the card is correspondingly embedded into the clamping groove; and the movement track of the toggle piece is intersected with the movement track of the overturning plate.
Further, a folding groove is formed between the adjacent accommodating grooves on the side wall of the sintering sagger; a baffle plate is fixedly arranged at a notch at one side of the broken line groove and is positioned in the sintering sagger; the baffle is obliquely arranged towards the notch direction of the folding groove in a shielding manner; the notch on the other side of the broken line groove is gradually increased; the baffle plates are arranged at intervals on the poking plates; the intersecting parts of the plurality of the baffle plates are fixedly provided with air ducts; a coherent groove is formed in the circumferential direction of the side wall of the air duct; the air duct is respectively communicated with the compartments through a plurality of coherent grooves; the air duct is lower than the top of the sintering sagger, and the top end of the air duct is open.
The beneficial effects are that: the invention is characterized in that
1) When the pushing block pushes the sintering sagger to the position of the conveying belt, the release groove corresponds to the position right above the forming groove, the discharging structure correspondingly releases the sagger powder into the forming groove at the moment, discharging is further completed, the pushing block can correspondingly flatten the sagger powder in the forming groove when the pushing block moves back, and then the upper mold core can conveniently press the sintering sagger again; the sagger powder in the storage chamber is uniformly sprayed out through the discharge disc and then uniformly dispersed in the circumferential direction through the diversion round blocks, so that the sprayed sagger powder can be uniformly filled into the rectangular channel, the filling texture is uniform, and the pressing effect is improved;
2) The rotating roller drives the sintering sagger to move along the guiding direction of the guide plate to pass through the sintering channel, and the matching grooves on the matching disc corresponding to the convex teeth on the side wall of the guide plate are meshed in the direction, so that the matching disc can drive the tray to move, and further the lithium battery material on the tray can be driven to rotate, thereby increasing the contact with atmosphere and increasing the sintering efficiency;
3) The convex blocks are arranged in a protruding mode, the atmosphere near the convex blocks is caused to be close to the sintering sagger, the rotary rods drive the arc-shaped pushing plates to move on the surfaces of the convex blocks, and then the atmosphere in the heat collecting grooves and near the convex blocks can be pushed away into the sintering sagger, and further the lithium battery anode material can be sintered; the telescopic rod drives the semicircular block to move to push the bottom of the heat collecting groove, the atmosphere in the heat collecting groove is pushed out, and then the atmosphere is pushed out into the sintering sagger through the arc pushing plate, so that the contact between the atmosphere and the lithium battery anode material can be improved, and the sintering effect is improved;
4) The heat conducted by the rib sheet is gathered in the heating channel, and the rib sheet can correspondingly extrude the atmosphere in the heating channel to flow to the surface of the lithium battery anode material in each compartment in the swinging process, so that the sintering effect is improved; on one hand, the rotating structure drives the lithium battery anode material to rotate, more atmosphere is contacted, and further sintering is better carried out; on the other hand, the rotating structure can correspondingly drive the prismatic sheet to swing in the rotating process, so that the atmosphere in the diffusion interval is pushed to the surface of the lithium battery anode material for contact sintering, and the sintering efficiency is improved;
5) The sintering sagger can be communicated with the roller kiln through the accommodating groove, and the overturning plate in the accommodating groove can correspondingly flash atmosphere to flow between the roller kiln and the sintering sagger in the rotating process, so that the contact between the atmosphere and lithium battery materials is increased; when the lithium battery material does not need to be sintered, the clamping piece stops the overturning plate and moves to be correspondingly clamped into the clamping groove, so that the overturning plate can be correspondingly embedded into the accommodating groove, the effect of serving as the side wall of the sintering sagger is achieved, and the influence of rotation of the overturning plate when the lithium battery material is taken and placed is avoided.
Drawings
FIG. 1 is a process step diagram;
FIG. 2 is a block diagram of a press;
FIG. 3 is a diagram showing a pushing structure;
FIG. 4 is a discharging structure diagram;
FIG. 5 is a diagram of a forming tank structure;
FIG. 6 is a cross-sectional view of a sintered channel structure;
FIG. 7 is a schematic diagram of a push-pull architecture;
FIG. 8 is a diagram of a rotational structure;
FIG. 9 is a diagram of a sintering tunnel configuration;
FIG. 10 is a block diagram of a sintering sagger;
FIG. 11 is a diagram of a rotational structure;
FIG. 12 is a block diagram of a guide plate;
FIG. 13 is a diagram of a prism sheet structure;
FIG. 14 is a diagram of a toggle plate structure;
FIG. 15 is a diagram of a ventilation structure;
FIG. 16 is a diagram of a compartment construction;
FIG. 17 is a diagram of the airway structure;
Fig. 18 is a card structure diagram.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-18: a sintering processing technology of high-quality lithium battery anode material comprises the following processing steps:
a first step of: the method comprises the steps of (1) preliminary sagger compression molding, firstly placing sagger powder into a molding cavity of a pressing machine, and then pressing the sagger powder into a container structure with a preliminary shape through a die on the pressing machine; transferring the preliminarily formed sagger to a processing equipment position through a transfer device for processing;
and a second step of: processing the sagger, namely forming an aperture on the sagger through processing equipment and processing a structure needing to be fixed, and putting a lithium battery anode material into the sagger after the processing is finished;
and a third step of: and (3) sintering the lithium battery, namely placing a sagger filled with the lithium battery anode material into a roller way combustion furnace for sintering, and then performing cold air cooling treatment so as to cool the sintered lithium battery anode material to normal temperature.
In the first step, pressing sagger powder under 140-200 Mpa; during the transfer, the preliminarily formed sagger stays in a space of 90-110 degrees for 10 hours.
When sintering is carried out, the sagger sequentially passes through a preheating zone, a heating sintering zone, a heat preservation zone and a cooling zone in the roller way combustion furnace; the inner wall of the heating sintering area is made of ceramic material; the heating sintering zone blows hot air into the preheating zone through an air blowing device, and the length of the heating sintering zone is 3 times of that of the preheating zone; the sagger passes through the cooling zone, the speed is gradually reduced until stopping, and the sagger passes through the cooling zone at a constant speed after staying for 0.5 hour.
The press comprises a press platform 6; a forming groove 61 is formed in the middle of the pressing platform 6; a lower die structure 64 is arranged in the bottom of the forming groove 61; an upper die structure 62 is arranged at a distance right above the forming groove 61; the pressing end of the upper die structure 62 moves in and out of the forming groove 61 to cooperate with the lower die structure 64 to press the sintering sagger 2 for preliminary forming; a pushing structure 63 is arranged on one side of the pressing platform 6; the pushing structure 63 moves reciprocally on the pressing platform 6 to push the sintering sagger 2 which is formed preliminarily; and placing sagger powder in the forming groove, then downwards embedding an upper die structure into the forming groove, pressing and forming the sintering sagger by matching with a lower die structure, after the pressing is finished, pushing the sintering sagger to the surface of a pressing platform by the lower die structure, and then pushing the preliminarily formed sintering sagger by a pushing structure to move to a conveying belt on one side of the pressing platform. The edge of the notch of the forming groove 61 is provided with an embedded groove 611; elastic pieces 612 are correspondingly filled in the embedded grooves 611; the upper die structure 62 includes an upper die core 621; the driving device is in driving connection with one end of the upper mold core 621, which is far away from the pressing platform 6; the upper mold core 621 moves downwards to be correspondingly embedded into the embedded groove 611; and the upper mold core extrudes the elastic piece for compression, and meanwhile, the upper mold core can correspondingly cooperate with the lower mold structure for pressing and forming the sagger in the groove, so that the sintering sagger is pressed and formed.
The lower mold structure 64 includes a fixed mold core 641; the fixed mold core 641 is fixedly arranged in the middle of the bottom of the forming groove 61, and the top end of the fixed mold core 641 is lower than the notch of the forming groove 61; a rectangular channel 642 is formed between the fixed mold core 641 and the inner wall of the forming groove 61; a side mold 643 is correspondingly arranged in the rectangular channel 642; the bottom driving device of the forming groove 61 is in driving connection with the bottom end of the side mold 643. The filled sagger powder is positioned in the rectangular channel and on the fixed mold core, when the upper mold core is embedded in the embedded groove, the upper mold core is matched with the upward movement of the side mold core, so that the corresponding compression molding can be realized, after the upper mold core is withdrawn, the side mold core can correspondingly push the preliminarily molded sintering sagger out of the molding groove, and then the pushing structure pushes the molded sintering sagger onto the conveying belt.
The pushing structure 63 comprises a fixed block 631 and a pushing block 632; the fixing block 631 is fixed on one side edge of the pressing platform 6; the driving device on one side of the fixed block 631 is in driving connection with one end of the pushing block 632; the pushing block 632 reciprocates between the upper die structure 62 and the lower die structure 64, and when the side die cores 643 eject the sintering sagger 2, the pushing block 632 pushes the preliminarily formed sintering sagger 2 to move to a conveyor belt on one side; the side mold core pushes upwards to push the formed sintering sagger to a pressing platform, and then the pushing block can push the sintering sagger to a conveying belt for transferring in the moving process.
The bottom of the pushing block 632 is slidably arranged on the surface of the pressing platform 6; a release groove 633 is formed at the bottom of the pushing block 632; a discharging structure 65 is arranged in the discharging groove 633; when the release groove 633 corresponds to the forming groove 61, the discharging structure 65 correspondingly releases the sagger powder into the forming groove 61; when the pushing block pushes the sintering sagger to the position of the conveying belt, the release groove corresponds to the position right above the forming groove, and the discharging structure correspondingly releases the sagger powder into the forming groove at the moment, so that discharging is completed, the pushing block can correspondingly spread the sagger powder in the forming groove when the pushing block moves back, and then the upper mold core is convenient to press the sintering sagger again. The discharging structure 65 comprises a flow guiding structure 66 and a discharging disc 651; the flow guiding structure 66 comprises a connecting rod 661 and a flow guiding circular block 662; one end of the connecting rod 661 is fixed at the middle part of the top of the release groove 633; a diversion round block 662 is fixedly arranged at the other end of the connecting rod 661; the bottom surface of the flow guide circular block 662 is flush with the table top of the pressing platform 6; the side wall of the diversion round block 662 is arranged at intervals with the inner wall of the release groove 633; the edge of the flow guide circular block 662 is a curved surface; a discharging disc 651 is arranged on the connecting rod 661 close to one end of the flow guide circular block 662 in a ring sleeved mode, and a rotating device on the connecting rod 661 is in driving connection with the discharging disc 651; the side wall of the discharging plate 651 is attached to the inner wall of the release groove 633 in a sliding manner; a storage chamber 652 is formed between the discharging tray 651 and the top of the release groove 633; a feed inlet is arranged at the top of the storage chamber 652; the sagger powder in the storage chamber is evenly sprayed out through the discharge disc, and then evenly dispersed in the annular direction through the diversion round block, so that the sprayed sagger powder can be evenly filled into the rectangular channel, the filling texture is guaranteed to be even, and the pressing effect is improved.
A diversion channel 634 is formed between the side wall of the diversion round block 662 and the release groove 633; the discharging disc 651 is correspondingly covered on the diversion channel 634; a slide groove 653 is formed in the discharging disc 651; the storage chamber 652 is communicated with the diversion channel 634 through a sliding chute 653; the sliding material groove 653 is arc-shaped, and the middle part of the inner wall of the bottom surface of the sliding material groove 653 is concavely arranged; the vibrating piece 654 is arranged on the concave bottom surface of the sliding material groove 653; the vibrating device in the discharging tray 651 is in driving connection with the vibrating piece 654; a closed structure 67 is arranged at the discharge end of the sliding material groove 653; the discharge disc rotates along the annular direction of the diversion channel, and the sagger powder is filled into the rectangular channel through the annular ring of the chute; and the vibrating reed can ensure continuous export of sagger powder, so that non-uniform discharging caused by clamping of the powder is avoided. The closure structure 67 includes a closure tab 671; a discharge hole of the sliding material groove 653 is provided with a feeding and discharging groove 672; the sealing plate 671 is correspondingly arranged in the inlet and outlet groove 672, and the driving device in the inlet and outlet groove 672 is in driving connection with the sealing plate 671; the closing plate 671 is correspondingly switched on and off in the chute 653, when the discharging is finished, the closing plate correspondingly moves to close the discharging hole of the chute and is opened when waiting for the next discharging.
The roller way combustion furnace comprises a sintering channel 1; the sintering sagger 2 is arranged on the rotary roller 11 at the bottom of the sintering passage 1 at intervals; the top of the sintering channel 1 is provided with a push-off structure 3; the middle part of the push-dispersion structure 3 is arranged at the sintering sagger 2 by protruding into the bottom of the sintering channel 1; the periphery of the push-dispersion structure 3 forms a heat-collecting area 31; the rotating end of the pushing and scattering structure 3 rotates to push hot air in the heat collecting area 31 into the sintering sagger 2; the rotating roller drives the lithium battery anode material to pass through the sintering passage through the sintering sagger, and the atmosphere in the sintering passage correspondingly contacts the surface of the lithium battery anode material, so that the lithium battery anode material can be effectively sintered, and the performance of the lithium battery anode material is improved; when the sintering sagger passes through the sintering channel, the diffusion structure correspondingly diffuses the atmosphere in the heat-collecting area into the sintering sagger to be contacted with the surface of the lithium battery anode material, so that the lithium battery anode material can be sintered.
The push-off structure 3 comprises a bump 32 and a rotating structure 33; the inner wall of the top of the sintering channel 1 is fixedly provided with a convex block 32; a plurality of heat collecting grooves 321 are formed in the side wall of the protruding block 32; the heat collecting groove 321 is semicircular; a rotating structure 33 is arranged on the side wall of the middle part of the protruding block 32; the rotating structure 33 includes a rotating rod 331; the rotating device on the side wall of the lug 32 is in driving connection with one end of a rotating rod 331; an arc-shaped push plate 332 is fixedly arranged on the side wall of one side of the rotating rod 331; the side wall of the arc push plate 332 is attached to the side wall of the bump 32 in a sliding manner; the protruding block is arranged in a protruding mode, the atmosphere near the protruding block is caused to be close to the sintering sagger, the arc-shaped pushing plate is driven to move on the surface of the protruding block by the rotating rod, and then the atmosphere in the heat collecting groove and near the protruding block can be pushed away into the sintering sagger, and further the lithium battery anode material can be sintered.
The protruding block 32 is internally provided with a movable cavity 34; the bottoms of the heat collecting grooves 321 are projected into the movable cavity 34; the movable cavity 34 is semicircular; the bottom of the heat collecting groove 321 is of an elastic structure; a pushing structure 35 is arranged in the movable cavity 34; the pushing end of the pushing structure 35 intermittently pushes the convex part at the bottom of the heat collecting groove 321; the pushing structure moves in the movable cavity, the pushing end of the pushing structure correspondingly pushes the bottom of the heat collecting groove, the heat collected by the heat collecting groove can be correspondingly pushed out of the heat collecting groove to be located near the convex block, and then the dispersed atmosphere is pushed into the sintering sagger to be in contact with the lithium battery anode material through the rotating arc pushing plate to be sintered. The pushing structure 35 comprises a semicircular block 351 and a telescopic rod 352; the middle top telescopic device of the movable cavity 34 is in driving connection with one end of a telescopic rod 352; a semicircular block 351 is fixedly arranged at the other end of the telescopic rod 352; the side wall of the semicircle block 351 is contacted with the bottom of the heat collecting groove 321, and the space between the side walls of the semicircle block 351 is arranged on the inner wall of the movable cavity 34. The telescopic link drives semicircle piece intermittent type nature and reciprocates in the activity intracavity, and the curved surface lateral wall of semicircle piece is corresponding to collide the tank bottom of gathering hot-cell, and then will gather hot-cell tank bottom and push away to gather hot-cell inside, corresponding just pushes away the intraductal atmosphere of gathering hot-cell and gathers hot-cell, and then promotes the flow of atmosphere in the sintering passageway, and the atmosphere that flows more abundant contacts with lithium electricity positive electrode material, and then can play certain energy-conserving effect, has promoted effect and the efficiency of sintering simultaneously.
The top of the sintering channel 1 is provided with a waste discharge through pipe 12; the waste discharge through pipes 12 and the pushing and scattering structure 3 are arranged at staggered intervals; the sintering passage 1 is a filter with a waste discharge through pipe 12 communicated with the outside; the waste discharge through pipe 12 is fixedly provided with a horn mouth 121 at a pipe orifice at one end corresponding to the sintering passage 1. The atmosphere is pushed to enter the surface of the lithium battery anode material in the sintering sagger from the top of the sintering sagger, so that the lithium battery anode material can be sintered, and the sintered atmosphere is discharged through the vent holes on the side wall of the sintering sagger and then discharged through the waste discharge through pipe.
A plurality of burners 13 are arranged on the inner walls of the two sides of the sintering channel 1; a plurality of burners 13 are arranged higher than the sintering sagger 2. The inner walls of the two sides of the sintering channel are provided with burners, the atmosphere generated by the burners can correspondingly move to the top of the sintering channel, and then can correspondingly converge near the heat collecting groove, and then the atmosphere is pushed into the sintering sagger through the pushing structure to sinter the lithium battery anode material.
The rotating device on the side wall of the bottom of the sintering passage 1 is in driving connection with the rotating roller 11; the rotating rollers 11 are arranged at intervals along the sintering passage 1, and the rotating rollers 11 are arranged at intervals on the bottom surface of the sintering passage 1; a plurality of salient points are fixedly arranged on the side wall of the rotating roller 11; the bottom surface of the sintering sagger 2 is in contact with the convex points; by arranging the convex points, the up-and-down fluctuation movement of the sintering sagger can be correspondingly caused in the process of transferring the sintering sagger, so that the contact between the lithium battery anode material and the atmosphere can be correspondingly promoted, and the sintering effect is enhanced.
A notch 21 is formed in one side of the bottom of the sintering sagger 2; a guide plate 14 is fixedly arranged on one side of the sintering passage 1; the guide plate 14 is arranged corresponding to the notch 21; a rotating structure 22 is arranged at the bottom of the sintering sagger 2; one side of the guide plate 14 is meshed with the rotating structure 22, and the rotating structure 22 drives the lithium battery material in the sintering sagger 2 to rotate; when the sintering sagger moves in the sintering passage, the guide plate is matched with the rotating structure, and then the rotating structure drives the lithium battery material to move, so that the contact between the lithium battery material and the atmosphere in the sintering passage is increased, and the sintering efficiency is improved correspondingly.
The rotating structure 22 includes a mating disc 221; a circular cavity 222 is formed in the bottom of the sintering sagger 2; the middle part of the top of the circular cavity 222 is provided with a through hole 224; one side of the circular cavity 222 is communicated with the notch 21; the circular cavity 222 is correspondingly filled with a sliding matching disc 221; one end of the supporting rod 225 on the matching disc 221 extends into the inner cavity of the sintering sagger 2 to be an extending end; a tray 23 is fixedly arranged on the extending end of the supporting rod 225; the matching disk 221 partially protrudes into the notch 21; a matching groove 223 is formed in the upper and lower sides of the side wall of the matching disc 221 in a penetrating way; convex teeth 141 are fixedly arranged on the side wall of the guide plate 14 corresponding to one side of the notch 21; the convex teeth 141 are correspondingly meshed with the matching grooves 223; the rotating roller drives the sintering sagger to move along the guiding direction of the guide plate and pass through the sintering channel, and the matching grooves on the matching discs corresponding to the convex teeth on the side wall of the guide plate are meshed in the direction, so that the matching discs can drive the tray to move, and further the lithium battery material on the tray can be driven to rotate, so that the contact with atmosphere is increased, and the sintering efficiency is increased.
The top of the sintering sagger 2 is opened, and the tray 23 is correspondingly arranged in the inner cavity of the sintering sagger 2; a partition plate 231 is fixedly arranged on the surface of the tray 23; the partition boards 231 are arranged in a circumferential direction and form a partition 232 with the inner cavity of the sintering sagger 2; lithium battery material is correspondingly arranged in the compartment 232; the partition 231 is arranged below the top of the sintering sagger 2; a plurality of compartments 232 in communication with one another; the cooperation dish passes through the bracing piece and drives the tray motion, and then drives the lithium electricity material rotation in the compartment, and the atmosphere that gets into through sintering casket-like bowl top can be more abundant with lithium electricity material surface contact, improves the sintering effect.
A plurality of through holes 26 are formed in the bottom of the sintering sagger 2 correspondingly to the gaps 21 in a penetrating manner; the sintering sagger 2 is communicated with the notch 21 through a through hole 26; a communication hole 233 is formed in the bottom of the partition 231; the bottom of the communication hole 233 is arranged to penetrate through the tray 23; the top of the communication hole 233 is communicated with the adjacent compartment 232; the compartment 232 is communicated with the notch 21 through the communication hole 233 and the through hole 26; an air suction cavity 142 is formed in the guide plate 14; a plurality of through holes 143 are formed in the side wall of the suction cavity 142; the inner wall of the notch 21 is arranged in a sliding manner with the side wall of the guide plate 14; the through hole 143 is intermittently connected to the through hole 26. The bottom of the compartment is communicated with the air suction cavity, the atmosphere at the bottom is sucked away, and the atmosphere at the top flows downwards into the compartment, so that the circulation of the atmosphere can be promoted, the contact with lithium battery materials is further increased, and the sintering effect is improved.
A plurality of ribs 25 are fixedly arranged on the inner wall of the sintering sagger 2 at annular intervals; the plurality of the ribs 25 are elastic structures, and diffusion regions 251 are formed among the plurality of ribs 25; the lithium battery anode material is arranged in the middle of the sintering sagger, and on one hand, the lithium battery anode material is driven to rotate through the rotating structure, more atmosphere is contacted, and further sintering is better carried out; on the other hand, the rotating structure can correspondingly drive the prismatic sheet to swing in the rotating process, so that the atmosphere in the diffusion interval is pushed to the surface of the lithium battery anode material for contact sintering, and the sintering efficiency is improved. A plurality of stirring sheets 234 are fixedly arranged on the periphery of the rotating structure 22 in a circumferential direction; the rotating structure 22 drives the plurality of stirring sheets 234 to stir the plurality of prism sheets 25 to swing and squeeze the prism sheets to the diffusion zone 251; a heat dissipation area 252 is formed between the tray 23 and the inner wall of the sintering sagger 2; the four corners of the ribs 25 are distributed in the heat dissipation area 252 in the sintering sagger 2; a plurality of stirring sheets 234 are fixedly arranged on the side wall of the tray 23 in a circumferential direction; the side edges of the plurality of the edge pieces 25 are positioned on the movement track of the stirring piece 234; the tray drives the stirring piece to stir each group of prism pieces, so that the atmosphere in the diffusion zone can be extruded out and contacted with the lithium battery anode material, the flow of the atmosphere is promoted, and the sintering efficiency is improved. The end of the poking piece 234 away from the tray 23 gradually decreases to be curved; the curved surface of the toggle piece 234 is fixedly provided with a plurality of elastic raised strips 236; through setting up the range that elasticity sand grip can be corresponding slow down the arris piece wobbling, avoid collision between the adjacent arris piece.
The prism sheets 25 distributed in four corners are respectively arranged in groups; the prismatic sheets 25 of each group are correspondingly arranged at the inner walls of four corners of the sintering sagger 2; the width of each group of the rib plates 25 gradually increases and then gradually decreases; the top of the rib sheet 25 is lower than the top of the sintering sagger 2; a plurality of semicircular grooves 253 are formed in the side wall of the rib sheet 25; the plurality of semicircular grooves 253 are arranged along the length direction of the rib sheet 25; the semicircular grooves 253 are arranged at intervals along the height direction of the rib sheet 25; a plurality of semicircular grooves 253 are communicated with the diffusion zone 251; the corresponding heat that can be with sintering casket-like bowl lateral wall of arris piece is conducted to the sintering casket-like bowl in, and the corresponding area that has increased of semicircle groove, does benefit to heat conduction, increases the atmosphere in the diffusion interval. A plurality of arc-shaped heat conducting strips 254 are fixedly arranged at the notch parts of the semicircular grooves 253; the arc-shaped heat conducting strips 254 are arranged at intervals along the length direction of the semicircular groove 253, and the axis of the arc-shaped heat conducting strips 254 is positioned on the axis of the semicircular groove 253; a heating channel 255 is formed between the arc-shaped heat conducting strips 254 and the semicircular grooves 253; the heating channel 255 is communicated with the diffusion zone 251 through gaps among the arc-shaped heat conducting strips 254; the heat conducted by the rib sheet is gathered in the heating channel, and the rib sheet can correspondingly extrude the atmosphere in the heating channel to flow to the surface of the lithium battery anode material in each compartment in the swinging process, so that the sintering effect is improved. The diameters of the arc-shaped heat conducting strips 254 gradually increase towards the middle of the sintering sagger 2, and the distances between the arc-shaped heat conducting strips 254 gradually increase towards the middle of the sintering sagger 2. The outlet position is large in opening, so that the atmosphere in the heating channel can be extruded and flowed out, and the atmosphere can be gathered by the limitation of the arc-shaped heat conducting strips, and the atmosphere can be extruded into the compartment in a concentrated manner, so that the sintering efficiency is improved.
A ventilation structure 4 is arranged on the side wall of the sintering sagger 2 in a circumferential direction; the ventilation structure 4 comprises a flipping panel 41; the turnover plate 41 is movably embedded in the side wall of the sintering sagger 2; a plurality of vent holes 24 are formed in the turnover plate 41 in a penetrating manner; the poking end of the rotating structure 22 correspondingly pokes a plurality of overturning plates 41 to rotate; the turning plate is driven to rotate through the rotating structure, so that the atmosphere is ensured to flow in the roller kiln and the sintering sagger; further, more contact with lithium battery materials in atmosphere is promoted, and sintering is better performed. The sintering sagger 2 is of a rectangular structure; a plurality of accommodating grooves 28 are formed in the middle of the side wall of the sintering sagger 2; the accommodating groove 28 is correspondingly filled with an overturning plate 41; connecting rods 411 are fixedly arranged in the middle of the two ends of the turnover plate 41; one end of the connecting rod 411, which is far away from the overturning plate 41, is embedded into the inner wall of the accommodating groove 28, and the overturning plate 41 is movably connected with the accommodating groove 28 through the connecting rod 411; the inner walls of the two sides of the accommodating groove 28 are concave curved surfaces; the inside of the sintering sagger 2 is communicated with the outside through a vent hole and a containing groove 28; the sintering sagger can be communicated with the roller kiln through the accommodating groove, and the overturning plate in the accommodating groove can correspondingly flash atmosphere to flow between the roller kiln and the sintering sagger in the rotating process, so that the contact between the atmosphere and lithium battery materials is increased.
A magnetic strip 281 is fixedly arranged on the inner wall of one side of the accommodating groove 28; the two side edges of the turnover plate 41 are fixedly provided with matching magnetic sheets 412; the mating magnetic sheet 412 and the magnetic stripe 281 repel each other; the turnover plate is guaranteed to move out of the accommodating groove, the turnover plate can be correspondingly stirred to rotate by the rotating structure in the rotating process, and then circulation of atmosphere is promoted, so that sintering of lithium battery materials is facilitated. The inner wall of the accommodating groove 28 is provided with a filling groove 282; a card 283 is disposed in the filling slot 282; the driving device on the bottom of the filling slot 282 is in driving connection with the corresponding end of the card 283; a clamping groove 413 is formed in the side wall of the edge of the turnover plate 41; the notch of the clamping groove 413 gradually increases; when the turnover plate 41 is correspondingly filled and embedded into the accommodating groove 28, the card 283 is correspondingly embedded into the card groove 413; when the lithium battery material does not need to be sintered, the clamping piece stops the overturning plate and moves to be correspondingly clamped into the clamping groove, so that the overturning plate can be correspondingly embedded into the accommodating groove, the effect of serving as the side wall of the sintering sagger is achieved, and the influence of rotation of the overturning plate when the lithium battery material is taken and placed is avoided. The motion track of the toggle piece 234 is intersected with the motion track of the turnover plate 41; the turnover plate is separated from the accommodating groove under the influence of the magnetic strip, and the rotary stirring piece correspondingly stirs the turnover plate to rotate, so that the flow of atmosphere can be promoted through the rotation of the turnover plate, and the sintering effect is improved.
A folding groove 29 is formed between the adjacent accommodating grooves 28 on the side wall of the sintering sagger 2; a baffle 291 is fixedly arranged at a notch at one side of the broken line groove 29, and the baffle 291 is positioned in the sintering sagger 2; the baffle 291 is obliquely arranged towards the notch direction of the folding groove 29 in a shielding manner; the notch on the other side of the broken line groove 29 is gradually increased; the baffle 291 is arranged at a distance from the toggle piece 234; the fold line grooves are positioned between the adjacent turnover plates, can correspondingly assist the turnover plates to drive the atmosphere to flow, and meanwhile, the atmosphere brought by the rotation of the turnover plates can be dispersed through the baffle plates. The intersection parts of the plurality of partition boards 231 are fixedly provided with air ducts 237; a continuous groove 238 is formed on the side wall of the air duct 237 in a circumferential direction; the air duct 237 is respectively communicated with the compartments 232 through a plurality of continuous grooves 238; the air duct 237 is arranged lower than the top of the sintering sagger 2, and the top end of the air duct 237 is open. Part of atmosphere can be introduced into the compartment from the middle part through the air duct and the coherent groove, so that atmosphere flows in the compartment and outside, the atmosphere can be further ensured to be in contact with lithium battery materials, and the sintering efficiency is improved.
It is to be understood that the foregoing is only illustrative of the preferred embodiments of the present invention, and that various modifications and changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this invention without departing from the spirit and purview of the appended claims.

Claims (6)

1. The sintering processing technology of the high-quality lithium battery anode material is characterized by comprising the following processing steps of:
a first step of: the method comprises the steps of (1) preliminary sagger compression molding, firstly placing sagger powder into a molding cavity of a pressing machine, and then pressing the sagger powder into a container structure with a preliminary shape through a die on the pressing machine; transferring the preliminarily formed sagger to a processing equipment position through a transfer device for processing;
and a second step of: processing the sagger, namely forming an aperture on the sagger through processing equipment and processing a structure needing to be fixed, and putting a lithium battery anode material into the sagger after the processing is finished;
and a third step of: sintering the lithium battery, namely placing a sagger filled with the lithium battery anode material into a roller way combustion furnace for sintering, and then performing cold air cooling treatment so as to cool the sintered lithium battery anode material to normal temperature;
in the first step, pressing sagger powder under 140-200 Mpa; during transferring, the preliminarily formed sagger stays in a space of 90-110 degrees for 10 hours;
when sintering is carried out, the sagger sequentially passes through a preheating zone, a heating sintering zone, a heat preservation zone and a cooling zone in the roller way combustion furnace; the inner wall of the heating sintering area is made of ceramic material; the heating sintering zone blows hot air into the preheating zone through an air blowing device, and the length of the heating sintering zone is 3 times of that of the preheating zone;
The speed of the sagger passing through the cooling zone is gradually reduced until the sagger stops, and the sagger passes through the cooling zone at a constant speed after staying for 0.5 hour;
the press comprises a press platform (6); a forming groove (61) is formed in the middle of the pressing platform (6); a lower die structure (64) is arranged in the bottom of the forming groove (61); an upper die structure (62) is arranged right above the forming groove (61) at intervals; the pressing end of the upper die structure (62) moves into and out of the forming groove (61) to be matched with the lower die structure (64) to press the sintering sagger (2) for preliminary forming; a pushing structure (63) is arranged on one side of the pressing platform (6); the pushing structure (63) moves back and forth on the pressing platform (6) to push the preliminarily formed sintering sagger (2); an embedded groove (611) is formed at the edge of the notch of the forming groove (61); elastic pieces (612) are correspondingly filled in the embedded grooves (611); the upper die structure (62) comprises an upper die core (621); the driving device is in driving connection with one end of the upper mold core (621) far away from the pressing platform (6); the upper mold core (621) moves downwards to be correspondingly embedded into the embedded groove (611);
the lower die structure (64) comprises a fixed die core (641); the fixed mold core (641) is fixedly arranged in the middle of the bottom of the forming groove (61), and the top end of the fixed mold core (641) is lower than the notch of the forming groove (61); a rectangular channel (642) is formed between the fixed mold core (641) and the inner wall of the forming groove (61); a side mold core (643) is correspondingly arranged in the rectangular channel (642); the groove bottom driving device of the forming groove (61) is in driving connection with the bottom end of the side mold core (643);
The pushing structure (63) comprises a fixed block (631) and a pushing block (632); the fixing block (631) is fixed on one side edge of the pressing platform (6); the driving device on one side of the fixed block (631) is in driving connection with one end of the pushing block (632); the pushing block (632) reciprocates between the upper die structure (62) and the lower die structure (64), and when the side die cores (643) eject the sintering sagger (2), the pushing block (632) pushes the preliminarily formed sintering sagger (2) to move to a conveyor belt at one side;
the bottom of the pushing block (632) is arranged in a sliding manner with the surface of the pressing platform (6); a release groove (633) is formed in the bottom of the pushing block (632); a discharging structure (65) is arranged in the discharging groove (633); when the release groove (633) corresponds to the forming groove (61), the discharging structure (65) correspondingly releases sagger powder into the forming groove (61); the discharging structure (65) comprises a flow guiding structure (66) and a discharging disc (651); the flow guiding structure (66) comprises a connecting rod (661) and a flow guiding circular block (662); one end of the connecting rod (661) is fixed at the middle part of the top of the release groove (633); a diversion round block (662) is fixedly arranged at the other end of the connecting rod (661); the bottom surface of the diversion round block (662) is flush with the table top of the pressing platform (6); the side wall of the diversion round block (662) is arranged at intervals with the inner wall of the release groove (633); the edge of the flow guiding circular block (662) is a curved surface; a discharging disc (651) is arranged on the connecting rod (661) close to one end of the flow guiding circular block (662) in a ring sleeved mode, and a rotating device on the connecting rod (661) is in driving connection with the discharging disc (651); the side wall of the discharging plate (651) is attached to the inner wall of the release groove (633) in a sliding manner; a storage chamber (652) is formed between the discharging disc (651) and the top of the release groove (633); a feed inlet is formed in the top of the storage chamber (652);
A diversion channel (634) is formed between the side wall of the diversion round block (662) and the release groove (633); the discharging disc (651) is correspondingly covered on the diversion channel (634); a slide groove (653) is formed in the discharging disc (651); the storage chamber (652) is communicated with the diversion channel (634) through a sliding chute (653); the sliding groove (653) is arc-shaped, and the middle part of the inner wall of the bottom surface of the sliding groove (653) is concavely arranged; a vibrating piece (654) is arranged on the concave bottom surface of the sliding groove (653); the vibrating device in the discharging disc (651) is in driving connection with the vibrating piece (654); a closed structure (67) is arranged at the discharge end of the sliding groove (653); the closure structure (67) comprises a closure tab (671); a discharge hole of the sliding material groove (653) is provided with a feeding and discharging groove (672); the sealing sheet (671) is correspondingly arranged in the inlet and outlet groove (672), and the driving device in the inlet and outlet groove (672) is in driving connection with the sealing sheet (671); the closing piece (671) is correspondingly switched on and off with the chute (653).
2. The processing system of the sintering processing technology of the high-quality lithium battery cathode material according to claim 1, wherein the processing system is characterized in that: the roller way combustion furnace comprises a sintering channel (1); sintering sagger (2) are arranged on the rotary roller (11) at the bottom of the sintering passage (1) at intervals; the top of the sintering channel (1) is provided with a push-off structure (3); the middle part of the push-dispersion structure (3) protrudes to the bottom of the sintering channel (1) and is arranged at the sintering sagger (2) at intervals; the periphery of the push-dispersion structure (3) forms a heat-collecting area (31); the rotating end of the pushing and scattering structure (3) rotates to push hot air in the heat collecting area (31) into the sintering sagger (2);
The push-off structure (3) comprises a bump (32) and a rotating structure (33); the inner wall of the top of the sintering channel (1) is fixedly provided with a lug (32); a plurality of heat collecting grooves (321) are formed in the side wall of the convex block (32); the heat collecting groove (321) is semicircular; a rotary structure (33) is arranged on the side wall of the middle part of the lug (32); the rotating structure (33) comprises a rotating rod (331); the rotating device on the side wall of the lug (32) is in driving connection with one end of the rotating rod (331); an arc-shaped push plate (332) is fixedly arranged on the side wall of one side of the rotating rod (331); the side wall of the arc push plate (332) is attached to the side wall of the convex block (32) in a sliding manner;
a movable cavity (34) is formed in the protruding block (32); the bottoms of the heat collecting grooves (321) are protruded into the movable cavity (34); the movable cavity (34) is semicircular; the bottom of the heat collecting groove (321) is of an elastic structure; a pushing structure (35) is arranged in the movable cavity (34); the pushing end of the pushing structure (35) intermittently pushes the convex part at the bottom of the heat collecting groove (321); the pushing structure (35) comprises a semicircular block (351) and a telescopic rod (352); the middle top expansion device of the movable cavity (34) is in driving connection with one end of an expansion link (352); a semicircular block (351) is fixedly arranged at the other end of the telescopic rod (352); the side walls of the semicircular blocks (351) are arranged at the bottoms of the heat collecting grooves (321) in a contact mode, and the side walls of the semicircular blocks (351) are arranged at the inner wall of the movable cavity (34) at intervals.
3. The processing system of the sintering processing technology of the high-quality lithium battery cathode material according to claim 2, wherein the processing system is characterized in that: a notch (21) is formed in one side of the bottom of the sintering sagger (2); a guide plate (14) is fixedly arranged on one side of the sintering channel (1); the guide plate (14) is arranged corresponding to the notch (21); a rotating structure (22) is arranged at the bottom of the sintering sagger (2); one side of the guide plate (14) is meshed with the rotating structure (22), and the rotating structure (22) drives the lithium battery material in the sintering sagger (2) to rotate;
the rotating structure (22) comprises a mating disc (221); a round cavity (222) is formed in the bottom of the sintering sagger (2); a through hole (224) is formed in the middle of the top of the circular cavity (222); one side of the circular cavity (222) is communicated with the notch (21); a matched disc (221) is correspondingly filled in the round cavity (222) in a sliding manner; one end of the upper supporting rod (225) of the matching disc (221) extends into the inner cavity of the sintering sagger (2) to form an extending end; a tray (23) is fixedly arranged at the extending end of the supporting rod (225); the matching disk (221) partially protrudes into the notch (21); a matching groove (223) is formed in the upper and lower parts of the side wall of the matching disc (221) in a penetrating way; convex teeth (141) are fixedly arranged on the side wall of the guide plate (14) corresponding to one side of the notch (21); the convex teeth (141) are correspondingly meshed with the matching grooves (223);
The top of the sintering sagger (2) is opened, and the tray (23) is correspondingly arranged in the inner cavity of the sintering sagger (2); a partition board (231) is fixedly arranged on the surface of the tray (23); a plurality of partition boards (231) are arranged in a circumferential direction and form a partition (232) with the inner cavity of the sintering sagger (2); lithium battery material is correspondingly arranged in the compartment (232); the partition plate (231) is arranged below the top of the sintering sagger (2); a plurality of compartments (232) are communicated with each other;
a plurality of through holes (26) are formed in the bottom of the sintering sagger (2) in a penetrating manner at positions corresponding to the notches (21); the sintering sagger (2) is communicated with the notch (21) through a through hole (26); a communication hole (233) is formed in the bottom of the partition plate (231); the bottom of the communication hole (233) penetrates through the tray (23); the top of the communication hole (233) is communicated with the adjacent compartment (232); the compartment (232) is communicated with the notch (21) through a communication hole (233) and a through hole (26); an air suction cavity (142) is formed in the guide plate (14); a plurality of through holes (143) are formed in the side wall of the air suction cavity (142); the inner wall of the notch (21) and the side wall of the guide plate (14) are arranged in a sliding manner; the through hole (143) is intermittently communicated with the through hole (26).
4. A processing system for a high quality lithium battery positive electrode material sintering process according to claim 3, wherein: a plurality of prismatic sheets (25) are fixedly arranged on the inner wall of the sintering sagger (2) at annular intervals; the plurality of the edge sheets (25) are of elastic structures, and diffusion sections (251) are formed among the plurality of the edge sheets (25); a plurality of stirring sheets (234) are fixedly arranged on the periphery of the rotating structure (22) in the circumferential direction; the rotating structure (22) drives the plurality of stirring sheets (234) to stir the plurality of prismatic sheets (25) to swing and squeeze the prismatic sheets in the diffusion zone (251); a heat dissipation area (252) is formed between the tray (23) and the inner wall of the sintering sagger (2); the four corners of the prism sheets (25) are distributed in the heat dissipation areas (252) in the sintering sagger (2); a plurality of stirring sheets (234) are fixedly arranged on the side wall of the tray (23) in the circumferential direction; the side edges of the plurality of the edge sheets (25) are positioned on the movement track of the stirring sheet (234); one end of the poking piece (234) far away from the tray (23) is gradually reduced to be a curved surface; a plurality of elastic raised strips (236) are fixedly arranged on the curved surface of the poking piece (234);
The prismatic sheets (25) distributed at four corners are respectively arranged in groups; the prismatic sheets (25) of each group are correspondingly arranged at the inner walls of four corners of the sintering sagger (2); the width of each group of the edge sheets (25) gradually increases and then gradually decreases; the tops of the edge sheets (25) are lower than the tops of the sintering sagger (2); a plurality of semicircular grooves (253) are formed in the side wall of each rib sheet (25); the plurality of semicircular grooves (253) are arranged along the length direction of the prism sheet (25); the semicircular grooves (253) are arranged at intervals along the height direction of the prism sheet (25); the semicircular grooves (253) are communicated with the diffusion sections (251); a plurality of arc-shaped heat conducting strips (254) are fixedly arranged at the notch parts of the semicircular grooves (253); the arc-shaped heat conducting strips (254) are arranged at intervals along the length direction of the semicircular groove (253), and the axis of each arc-shaped heat conducting strip (254) is positioned on the axis of the semicircular groove (253); a heating channel (255) is formed between the arc-shaped heat conducting strips (254) and the semicircular grooves (253); the heating channel (255) is communicated with the diffusion section (251) through gaps among the arc-shaped heat conducting strips (254); the diameters of the arc heat conducting strips (254) gradually increase towards the middle of the sintering sagger (2), and the distances between the arc heat conducting strips (254) gradually increase towards the middle of the sintering sagger (2).
5. The processing system of the sintering processing technology of the high-quality lithium battery cathode material according to claim 4, wherein the processing system is characterized in that: a ventilation structure (4) is arranged on the side wall of the sintering sagger (2) in a circumferential direction; the ventilation structure (4) comprises a flipping panel (41); the turnover plate (41) is movably embedded in the side wall of the sintering sagger (2); a plurality of vent holes (24) are formed in the turnover plate (41) in a penetrating mode; the stirring end of the rotating structure (22) correspondingly stirs a plurality of turnover plates (41) to rotate; the sintering sagger (2) is of a rectangular structure; a plurality of accommodating grooves (28) are formed in the middle of the side wall of the sintering sagger (2); the accommodating groove (28) is correspondingly filled with a turnover plate (41); connecting rods (411) are fixedly arranged in the middle of the two ends of the turnover plate (41); one end, far away from the overturning plate (41), of the connecting rod (411) is embedded into the inner wall of the accommodating groove (28), and the overturning plate (41) is movably connected with the accommodating groove (28) through the connecting rod (411); the inner walls of the two sides of the accommodating groove (28) are concave curved surfaces; the inside of the sintering sagger (2) is communicated with the outside through a vent hole and a containing groove (28);
a magnetic strip (281) is fixedly arranged on the inner wall of one side of the accommodating groove (28); the two side edges of the turnover plate (41) are fixedly provided with matching magnetic sheets (412); the matching magnetic sheet (412) and the magnetic strip (281) are mutually exclusive; the inner wall of the accommodating groove (28) is provided with a filling groove (282); a card (283) is arranged in the filling groove (282); the driving device on the bottom of the filling groove (282) is in driving connection with one end corresponding to the card (283); a clamping groove (413) is formed in the side wall of the edge of the turnover plate (41); the notch of the clamping groove (413) is gradually increased; when the turnover plate (41) is correspondingly filled and embedded into the accommodating groove (28), the card (283) is correspondingly embedded into the clamping groove (413); the movement track of the toggle piece (234) is intersected with the movement track of the turnover plate (41).
6. The processing system of the sintering processing technology of the high-quality lithium battery cathode material according to claim 5, wherein the processing system is characterized in that: a folding groove (29) is formed between the adjacent accommodating grooves (28) on the side wall of the sintering sagger (2); a baffle (291) is fixedly arranged at a notch at one side of the broken line groove (29), and the baffle (291) is positioned in the sintering sagger (2); the baffle (291) is obliquely arranged towards the notch direction of the folding groove (29) in a shielding manner; the notch on the other side of the broken line groove (29) is gradually increased; the baffle plates (291) are arranged at intervals on the poking plates (234); the intersecting parts of the plurality of partition boards (231) are fixedly provided with air ducts (237); a continuous groove (238) is formed in the side wall of the air duct (237) in the circumferential direction; the air duct (237) is respectively communicated with the compartments (232) through a plurality of consecutive grooves (238); the air duct (237) is lower than the top of the sintering sagger (2), and the top end of the air duct (237) is open.
CN202111415124.2A 2021-11-25 2021-11-25 Sintering processing technology and processing system for high-quality lithium battery anode material Active CN114152088B (en)

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CN112720798A (en) * 2020-12-16 2021-04-30 佛山市恒力泰机械有限公司 Sagger dry-method pressing forming method and equipment and sagger
CN112743662A (en) * 2020-12-16 2021-05-04 佛山市恒力泰机械有限公司 Compression molding method and equipment for burning-bearing sagger and burning-bearing sagger

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CN204787781U (en) * 2015-07-13 2015-11-18 新乡市中天光源材料有限公司 Production push pedal stove for lithium ion batteries cathode materials
CN207716877U (en) * 2018-01-08 2018-08-10 朱性宇 Electrode material of lithium battery preparation saggar
CN108123100A (en) * 2018-01-17 2018-06-05 广东中鹏热能科技有限公司 A kind of lithium electric material full-automatic production method and production line
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CN112743662A (en) * 2020-12-16 2021-05-04 佛山市恒力泰机械有限公司 Compression molding method and equipment for burning-bearing sagger and burning-bearing sagger

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