CN114887832B - Lithium battery positive plate and edge insulation layer integrated coating die head - Google Patents
Lithium battery positive plate and edge insulation layer integrated coating die head Download PDFInfo
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- CN114887832B CN114887832B CN202210555844.7A CN202210555844A CN114887832B CN 114887832 B CN114887832 B CN 114887832B CN 202210555844 A CN202210555844 A CN 202210555844A CN 114887832 B CN114887832 B CN 114887832B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0245—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
- B05C5/025—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web only at particular part of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses an integrated coating die head for a positive plate and an edge insulating layer of a lithium battery, which comprises an upper die, a lower die, a positive slurry supply device and an insulating slurry supply device, and further comprises a middle die, wherein the middle die is positioned between the upper die and the lower die, slurry cavities are respectively arranged between the upper die and the middle die and between the middle die and the lower die, each slurry cavity comprises a positive slurry cavity and an insulating slurry cavity, the positive slurry cavities and the insulating slurry cavities are intersected at edge die lips of output ends of the upper die and the lower die, the positive slurry supply device is connected with the positive slurry cavities, and the insulating slurry supply device is connected with the insulating slurry cavities. The utility model adopts the coating die heads of the upper, middle and lower three dies, two independent slurry cavities of the positive electrode slurry cavity and the insulating slurry cavity can be formed, and as the two slurry cavities are completely isolated by the middle die, a safe space distance exists, thereby completely avoiding the possibility that the insulating slurry leaks and invades the positive electrode slurry cavity, and fundamentally solving the problem that the insulating slurry leaks and pollutes the positive electrode slurry during positive electrode coating.
Description
Technical Field
The utility model relates to battery manufacturing equipment, in particular to an integrated coating die head for a positive plate and an edge insulating layer of a lithium battery.
Background
The metal burrs are easy to appear on the die-cut rear edge of the positive electrode plate of the lithium battery, and when the burrs pierce through the diaphragm, the burrs are directly conducted with the negative electrode plate, so that risks such as fire and explosion of the lithium battery can be possibly caused. The method comprises the steps that a layer of 3-15 mm wide ceramic insulating layer is coated on the edge of the positive pole piece, the positive pole can remain 3-5 mm wide insulating layer after die cutting, the width of the positive pole piece exceeds that of the negative pole piece, the edge of the negative pole is opposite to the residual insulating layer of the positive pole after winding or lamination, and therefore the safety risk that the positive pole and the negative pole are conducted through die cutting burrs is avoided. In the prior art, the positive pole piece and the insulating layer at the edge of the positive pole piece are synchronously formed on the aggregate through a coating die head, the upper die and the lower die of the coating die head form slurry cavities of positive pole slurry, grooves are formed on gaskets between the upper film and the lower film and serve as slurry cavities of the insulating layer, and the positive pole slurry and the insulating slurry are respectively conveyed through the slurry cavities and finally coated on the aggregate. However, the current technology often causes leakage of the insulating slurry in the diversion trench at the middle part of the coating gasket to the coating die head due to the reasons of the coating die head, the gasket installation precision or the deformation of the gasket after long-term use, etc., so that the problem of pollution of the anode slurry in the die head cavity exists for a long time and cannot be fundamentally solved. Along with the development of ultra-wide width, multiple, double-sided and high-speed coating, the probability of slurry pollution is increased sharply, and the loss caused after the slurry pollution is increased greatly. The utility model patent with publication number of CN203620875U discloses a bipolar plate extrusion coating device, which comprises an extrusion coating machine head and a heating system, and a positive electrode slurry sizing system and a negative electrode slurry sizing system which are connected with the extrusion coating machine head; the positive electrode plate drying system and the negative electrode plate drying system are connected with the heating system; the extrusion coating machine head comprises two slurry cavities, each slurry cavity is provided with a coating head, one slurry cavity is connected with the positive electrode slurry sizing system, and the other slurry cavity is connected with the negative electrode slurry feeding system; the positive plate drying system and the negative plate drying system are respectively positioned at the downstream of the extrusion coating machine head. According to the bipolar plate extrusion coating device, the two sets of feeding systems and the two sets of drying systems share one extrusion coating machine head and one heating system, so that the coating process of the positive and negative plates of the lithium battery can be finished at the same time, the working efficiency is improved, and the system cost is reduced. But the technical scheme of the utility model can not be used for solving the problem that the insulating slurry pollutes the positive electrode slurry.
Disclosure of Invention
In the prior art, the problem that insulating slurry leaks and pollutes the positive electrode slurry exists in the process of synchronously forming the positive electrode plate and the positive electrode plate edge insulating layer by using a coating die head.
The technical scheme of the utility model is as follows: the utility model provides a lithium cell positive plate and marginal insulating layer integral type coating die head, including last mould, lower mould, positive electrode slurry feeding device and insulating slurry feeding device, still include the well mould, well mould is located between last mould and the lower mould, go up between well mould and the lower mould, all be equipped with the thick liquids chamber between well mould and the lower mould, the thick liquids chamber includes positive electrode slurry chamber and insulating slurry chamber, positive electrode slurry chamber and insulating slurry chamber intersect in last mould, lower mould's output marginal die lip department, positive electrode slurry feeding device is connected with positive electrode slurry chamber, insulating slurry feeding device is connected with insulating slurry chamber. The utility model adopts the coating die heads of the upper, middle and lower three dies, can form two independent slurry cavities of the positive slurry cavity and the insulating slurry cavity, which are respectively used for coating the positive slurry and coating the insulating slurry.
Preferably, the middle die is provided with a cavity, a die gap adjusting device is arranged in the cavity, the die gap adjusting device comprises an adjusting motor, a transmission frame, a pair of upper connecting rods, a pair of lower connecting rods, an upper adjusting block mounting rod, a lower adjusting block mounting rod, an upper adjusting block and a lower adjusting block, the output end of the adjusting motor is connected with a screw, the screw is connected with a nut seat on the transmission frame through threads, one end of the upper connecting rod and one end of the lower connecting rod are hinged on the transmission frame together, the upper adjusting block mounting rod is hinged at the other ends of the two upper connecting rods, the lower adjusting block mounting rod is hinged at the other ends of the two lower connecting rods, the upper adjusting block is fixed on the upper adjusting block mounting rod, the lower adjusting block is fixed on the lower adjusting block mounting rod, adjusting block sliding grooves which are respectively communicated with the anode slurry cavity and the insulating slurry cavity are arranged on the cavity wall, the upper adjusting block and the lower adjusting block sliding are connected in the adjusting block sliding grooves, and the adjusting block sliding groove notch is provided with an elastic adjusting diaphragm. And gaps exist between the upper die and the lower die, when the coating die head works, slurry with certain flow enters a slurry cavity in the die head, stable pressure is formed, and the slurry finally flows out of an output port of the die head through the gaps and is coated on the anode sheet flow set. The key index of coating is coating surface density, die gap control is the biggest influencing factor influencing coating surface density, and realizing die gap accurate control is a key measure for improving surface density consistency. In view of the adoption of the three-piece die structure, the die gap control structure also has to be adaptively arranged according to the characteristics of the three-piece die structure. The adjusting motor operates, the transmission frame is driven to move through the screw rod, and then the upper connecting rod and the lower connecting rod are forced to expand or retract, and the upper connecting rod and the lower connecting rod respectively drive the upper adjusting block and the lower adjusting block to slide in the adjusting block sliding groove so as to adapt to the distance change between the transmission frame and the adjusting block sliding groove. When the upper adjusting block and the lower adjusting block extend out of the adjusting block sliding groove, the elastic adjusting diaphragm is driven to deform and bulge, and the sizes of the effective slurry channels between the upper die and the middle die and between the middle die and the lower die can be changed, so that die gap adjustment is realized.
Preferably, a temperature control pipeline is arranged in the middle die, a circulating medium is led into the temperature control pipeline, and the temperature control pipeline is connected with a temperature control device arranged outside the middle die. The fluidity of the slurry can be changed by adjusting the temperature, and the coating speed and the die gap adjustment can be matched better.
Preferably, the positive electrode slurry supply device comprises a positive electrode slurry storage tank, a positive electrode slurry screw pump and a positive electrode slurry filter screen, wherein the positive electrode slurry storage tank is communicated with the positive electrode slurry screw pump through a pipeline, the positive electrode slurry screw pump is communicated with the positive electrode slurry filter screen through a pipeline, and the positive electrode slurry filter screen is communicated with the positive electrode slurry cavity through a pipeline. The positive electrode slurry supply device can continuously and accurately input the positive electrode slurry into the coating die head.
Preferably, the insulating slurry supply device comprises an insulating slurry storage tank, an insulating slurry screw pump and an insulating slurry filtering screen, wherein the insulating slurry storage tank is communicated with the insulating slurry screw pump through a pipeline, the insulating slurry screw pump is communicated with the insulating slurry filtering screen through a pipeline, and the insulating slurry filtering screen is communicated with the insulating slurry cavity through a pipeline. By means of the insulating paste supply device, insulating paste can be continuously and accurately fed into the coating die head.
Preferably, slurry cavity gaskets are arranged between the upper die and the middle die and between the middle die and the lower die, and slurry diversion trenches forming the slurry cavities are arranged on the slurry cavity gaskets. The slurry chamber gasket can more conveniently form a slurry chamber, thereby determining the coating area. Compared with the mode that the slurry cavity is formed by directly machining the surfaces of the upper die, the middle die and the lower die, the slurry cavity is formed by the slurry cavity gasket, and the structure is simple and the cost is low.
Preferably, the middle die is in a triangular prism shape, opposite surfaces of the upper die and the lower die are inclined surfaces, and the middle die is adaptively embedded in a V-shaped opening formed by the inclined surfaces of the upper die and the lower die. Thus, the upper, middle and lower dies can form compact fit, and the slurry channel inside the die head is straight, so that the positive electrode slurry and the insulating slurry are ensured to be output from the output port of the die head and smoothly circulated.
Alternatively, the cross section of the middle die is in a sword head shape, the opposite surfaces of the output ends of the upper die and the lower die are inclined surfaces, and the middle die is adaptively embedded between the upper die and the lower die. The structure can also enable the upper die, the middle die and the lower die to form compact fit, and the positive electrode slurry and the insulating slurry are output from the die head output port.
The beneficial effects of the utility model are as follows:
the isolation of the anode slurry and the insulating slurry can be enhanced, and the pollution of the anode slurry caused by leakage of the insulating slurry is avoided. The utility model adopts a three-piece die structure to fundamentally solve the problem that the insulating slurry pollutes the anode slurry, ensure the continuity of coating production, and greatly reduce the cost waste in the aspects of materials, energy consumption and labor caused by the pollution of the insulating slurry to the anode slurry.
Drawings
FIG. 1 is a schematic diagram of a structure of the present utility model;
FIG. 2 is a schematic view of a die gap adjusting device according to the present utility model;
FIG. 3 is a top view of a die gap adjustment device of the present utility model;
FIG. 4 is a schematic view of another embodiment of the present utility model;
fig. 5 is a schematic view of a positive electrode sheet coated by the present utility model.
In the figure, 1-upper die, 2-lower die, 3-middle die, 4-positive electrode slurry cavity, 5-insulating slurry cavity, 6-cavity, 7-regulating motor, 8-transmission frame, 9-upper connecting rod, 10-upper regulating block mounting rod, 11-upper regulating block, 12-screw, 13-regulating block chute, 14-lower connecting rod, 15-elastic regulating membrane, 16-lower regulating block, 17-temperature control pipeline, 18-positive electrode slurry storage tank, 19-positive electrode slurry screw pump, 20-positive electrode slurry filter sieve, 21-insulating slurry storage tank, 22-insulating slurry screw pump, 23-insulating slurry filter sieve, 24-positive electrode flow set, 25-coating back roller, 26-oven, 27-positive electrode plate and 28-insulating layer.
Detailed Description
The utility model is further described below by means of specific embodiments in connection with the accompanying drawings.
Example 1:
as shown in fig. 1 and 5, the lithium battery positive plate and edge insulating layer integrated coating die head comprises an upper die 1, a lower die 2, a positive electrode slurry supply device and an insulating slurry supply device, and further comprises a middle die 3, wherein the middle die 3 is positioned between the upper die 1 and the lower die 2, slurry cavities are respectively arranged between the upper die 1 and the middle die 3 and between the middle die 3 and the lower die 2, each slurry cavity comprises a positive electrode slurry cavity 4 and an insulating slurry cavity 5, the insulating slurry cavity 5 is positioned between the upper die 1 and the middle die 3, the positive electrode slurry cavity 4 is positioned between the middle die 3 and the lower die 2, the positive electrode slurry cavity 4 and the insulating slurry cavity 5 are intersected at edge die lips at the output ends of the upper die 1 and the lower die 2, the positive electrode slurry supply device is connected with the positive electrode slurry cavity 4, and the insulating slurry supply device is connected with the insulating slurry cavity 5. The positive electrode slurry supply device comprises a positive electrode slurry storage tank 18, a positive electrode slurry screw pump 19 and a positive electrode slurry filter screen 20, wherein the positive electrode slurry storage tank 18 and the positive electrode slurry screw pump 19 are communicated through a pipeline, the positive electrode slurry screw pump 19 and the positive electrode slurry filter screen 20 are communicated through a pipeline, and the positive electrode slurry filter screen 20 and the positive electrode slurry cavity 4 are communicated through a pipeline. The insulating slurry supply device comprises an insulating slurry storage tank 21, an insulating slurry screw pump 22 and an insulating slurry filtering screen 23, wherein the insulating slurry storage tank 21 is communicated with the insulating slurry screw pump 22 through a pipeline, the insulating slurry screw pump 22 is communicated with the insulating slurry filtering screen 23 through a pipeline, and the insulating slurry filtering screen 23 is communicated with the insulating slurry cavity 5 through a pipeline. Slurry cavity gaskets are arranged between the upper die 1 and the middle die 3 and between the middle die 3 and the lower die 2, and slurry diversion trenches forming a slurry cavity are arranged on the slurry cavity gaskets. The slurry diversion trenches on the slurry cavity gaskets between the middle die 3 and the lower die 2 form two independent equal-sized rectangular positive electrode slurry cavities 4, the slurry diversion trenches on the slurry cavity gaskets between the upper die 1 and the middle die 3 form four parallel slender insulating slurry cavities 5, the insulating slurry cavities 5 are in one-to-one correspondence with the four boundaries of the positive electrode slurry cavities 4, and each insulating slurry cavity 5 is positioned at the outer side of the boundary of the corresponding positive electrode slurry cavity 4. The middle die 3 is in a triangular prism shape, opposite surfaces of the upper die 1 and the lower die 2 are inclined surfaces, the middle die 3 is adaptively embedded in a V-shaped opening formed by the inclined surfaces of the upper die 1 and the lower die 2, and the tip end of the middle die 3 is positioned at the edge die lips of the output ends of the upper die 1 and the lower die 2.
When the lithium battery anode plate and edge insulating layer integrated coating die head works, the insulating slurry supply device and the anode slurry supply device respectively input insulating slurry and anode slurry into the insulating slurry cavity 5 and the anode slurry cavity 4, stable pressure is formed in the slurry cavity, finally, the insulating slurry flows out of the die head output end and is coated on the anode plate fluid aggregate 24 wound on the coating back roller 25, the anode slurry forms two sections of independent and unconnected anode slurry coating areas, the insulating slurry forms insulating slurry coating areas on two sides of the anode plate slurry coating areas, the insulating slurry coating areas are connected with the boundaries of the corresponding anode plate slurry coating areas, the anode plate fluid aggregate 24 is stretched and conveyed, the slurry is dried and fixed through the oven 26, the anode plate slurry coating area finally becomes the anode plate 27, and the insulating slurry coating area finally becomes the insulating layer 28 on the outer side of the anode plate.
Example 2:
as shown in fig. 2 and 3, a cavity 6 is provided on the middle mold 3, and a mold gap adjusting device is provided in the cavity 6, wherein the mold gap adjusting device comprises an adjusting motor 7, a transmission frame 8, a pair of upper connecting rods 9, a pair of lower connecting rods 14, an upper adjusting block mounting rod 10, a lower adjusting block mounting rod, an upper adjusting block 11 and a lower adjusting block 16. The regulating motor 7 is installed in the cavity 6 through the fixed plate, regulating motor 7 output is connected with screw rod 12 through the shaft coupling, be equipped with the slide rail on the cavity wall of cavity 6 both sides, the drive frame 8 both sides are connected on the slide rail through the slider, drive frame 8 middle part is fixed with the nut seat, screw rod 12 passes through threaded connection with the nut seat, go up connecting rod 9 one end and lower connecting rod 14 one end and articulate jointly on drive frame 8, go up regulating block installation pole 10 and articulate the other end at two upper connecting rods 9, lower regulating block installation pole articulates the other end at two lower connecting rods 14, go up regulating block 11 and be four and fix on last regulating block installation pole 10, go up regulating block 11 width and insulating thick liquids chamber 5 width equals. The lower regulating blocks 16 are fixed on the lower regulating block mounting rods, the total length of each group of lower regulating blocks 16 is equal to the length of a single positive electrode slurry cavity 4, and the number of the lower regulating blocks 16 is fourteen. The cavity wall of the cavity 6 is provided with an adjusting block chute 13 which is respectively communicated with the positive electrode slurry cavity 4 and the insulating slurry cavity 5, an upper adjusting block 11 and a lower adjusting block 16 are slidably connected in the adjusting block chute 13, the notch of the adjusting block chute 13 is provided with an elastic adjusting diaphragm 15, and the elastic adjusting diaphragm 15 is sealed and attached to the outer surface of the middle die 3. The middle mold 3 is internally provided with a temperature control pipeline 17, the temperature control pipeline 17 is stuck on the inner wall of the cavity 6 in a serpentine coil pipe mode, a circulating medium is filled in the temperature control pipeline 17, and the temperature control pipeline is connected with a temperature control device arranged outside the middle mold 3. The regulating motor 7 is connected to a PLC control system which is also connected to an area density monitoring device. The procedure is as in example 1.
The adjusting motor 7 operates, the transmission frame is driven to move through the screw 12, and then the upper connecting rod 9 and the lower connecting rod 14 are forced to expand or retract, and the upper connecting rod 9 and the lower connecting rod 14 respectively drive the upper adjusting block 11 and the lower adjusting block 16 to slide in the adjusting block sliding chute 13 so as to adapt to the distance change between the transmission frame 8 and the adjusting block sliding chute 13. When the upper adjusting block 11 and the lower adjusting block 16 extend out of the adjusting block chute 13, the elastic adjusting diaphragm 15 is driven to deform and bulge, and the sizes of effective slurry channels between the upper die and the middle die and between the middle die and the lower die can be changed, so that die gap adjustment is realized. The regulating motor 7 is a servo motor, a driving mechanism formed by the regulating motor 7 and the screw 12 works in a closed-loop control mode, the regulating quantity is perceived in real time, and a control system for controlling the work of the coating die head adjusts the working state of the motor in real time according to the surface density monitoring feedback signal, so that the rapid regulation of the coating process is realized, the gap is accurately controlled, and the experience dependence on operators is reduced.
Example 3:
as shown in fig. 4, the cross section of the middle die 3 is in a sword-head shape, the opposite surfaces of the output ends of the upper die 1 and the lower die 2 are inclined surfaces, and the middle die 3 is adaptively embedded between the upper die 1 and the lower die 2. The procedure is as in example 1.
Claims (7)
1. The utility model provides a lithium battery positive plate and marginal insulating layer integral type coating die head, including last mould (1), lower mould (2), anodal thick liquids feeding mechanism and insulating thick liquids feeding mechanism, characterized by still includes well mould (3), well mould (3) are located between last mould (1) and lower mould (2), go up between mould (1) and well mould (3), all be equipped with thick liquids chamber between well mould (3) and lower mould (2), thick liquids chamber includes anodal thick liquids chamber (4) and insulating thick liquids chamber (5), anodal thick liquids chamber (4) and insulating thick liquids chamber (5) intersect in last mould (1), the output marginal die lip department of lower mould (2), anodal thick liquids feeding mechanism is connected with anodal thick liquids chamber (4), insulating thick liquids feeding mechanism is connected with insulating thick liquids chamber (5), be equipped with cavity (6) on well mould (3), be equipped with gap interval adjusting device in cavity (6), gap interval adjusting device includes accommodate motor (7), drive frame (8), a pair of upper connecting rod (9), a pair of lower connecting rod (14), install piece installation piece (12) and screw rod (12) are connected with screw rod (12) down, one end of an upper connecting rod (9) and one end of a lower connecting rod (14) are hinged on a transmission frame (8) together, an upper regulating block mounting rod is hinged at the other ends of the two upper connecting rods (9), a lower regulating block mounting rod (15) is hinged at the other ends of the two lower connecting rods (14), an upper regulating block (11) is fixed on the upper regulating block mounting rod, a lower regulating block (16) is fixed on the lower regulating block mounting rod (15), regulating block sliding grooves (13) which are respectively communicated with the positive electrode slurry cavity (4) and the insulating slurry cavity (5) are arranged on the cavity wall of the cavity (6), and the upper regulating block (11) and the lower regulating block (16) are connected in the regulating block sliding grooves (13) in a sliding mode, and regulating pieces are arranged on the notch of the regulating block sliding grooves (13).
2. The lithium battery positive plate and edge insulating layer integrated coating die head according to claim 1, characterized in that a temperature control pipeline (17) is arranged in the middle die (3), a circulating medium is led into the temperature control pipeline (17), and the temperature control pipeline (17) is connected with a temperature control device arranged outside the middle die (3).
3. The lithium battery positive plate and edge insulation layer integrated coating die head according to claim 1, wherein the positive electrode slurry supply device comprises a positive electrode slurry storage tank (18), a positive electrode slurry screw pump (19) and a positive electrode slurry filter screen (20), the positive electrode slurry storage tank (18) and the positive electrode slurry screw pump (19) are communicated through a pipeline, the positive electrode slurry screw pump (19) and the positive electrode slurry filter screen (20) are communicated through a pipeline, and the positive electrode slurry filter screen (20) and the positive electrode slurry cavity (4) are communicated through a pipeline.
4. The lithium battery positive plate and edge insulating layer integrated coating die head according to claim 1, wherein the insulating paste supply device comprises an insulating paste storage tank (21), an insulating paste screw pump (22) and an insulating paste filtering screen (23), the insulating paste storage tank (21) and the insulating paste screw pump (22) are communicated through a pipeline, the insulating paste screw pump (22) and the insulating paste filtering screen (23) are communicated through a pipeline, and the insulating paste filtering screen (23) and the insulating paste cavity (5) are communicated through a pipeline.
5. The lithium battery positive plate and edge insulating layer integrated coating die head according to claim 1, wherein slurry cavity gaskets are arranged between the upper die (1) and the middle die (3) and between the middle die (3) and the lower die (2), and slurry diversion trenches forming a slurry cavity are arranged on the slurry cavity gaskets.
6. The lithium battery positive plate and edge insulating layer integrated coating die head according to any one of claims 1 to 5, wherein the middle die (3) is in a triangular prism shape, opposite surfaces of the upper die (1) and the lower die (2) are inclined surfaces, and the middle die (3) is adaptively embedded in a V-shaped opening formed by the inclined surfaces of the upper die (1) and the lower die (2).
7. The lithium battery positive plate and edge insulating layer integrated coating die head according to any one of claims 1 to 5, wherein the cross section of the middle die (3) is in a sword-head shape, the opposite surfaces of the output ends of the upper die (1) and the lower die (2) are inclined surfaces, and the middle die (3) is adaptively embedded between the upper die (1) and the lower die (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555844.7A CN114887832B (en) | 2022-05-19 | 2022-05-19 | Lithium battery positive plate and edge insulation layer integrated coating die head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555844.7A CN114887832B (en) | 2022-05-19 | 2022-05-19 | Lithium battery positive plate and edge insulation layer integrated coating die head |
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| Publication Number | Publication Date |
|---|---|
| CN114887832A CN114887832A (en) | 2022-08-12 |
| CN114887832B true CN114887832B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210555844.7A Active CN114887832B (en) | 2022-05-19 | 2022-05-19 | Lithium battery positive plate and edge insulation layer integrated coating die head |
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| CN116441118B (en) * | 2023-04-10 | 2024-02-13 | 上川精密科技(无锡)有限公司 | Lithium battery coating die head cavity structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203886739U (en) * | 2014-03-24 | 2014-10-22 | 四川剑兴锂电池有限公司 | Coating machine for lithium battery pole piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5964253B2 (en) * | 2013-01-18 | 2016-08-03 | オートモーティブエナジーサプライ株式会社 | Manufacturing method of electrode sheet for secondary battery and coating apparatus used therefor |
| WO2015009033A1 (en) * | 2013-07-16 | 2015-01-22 | 주식회사 엘지화학 | Member for slot die coater, movable member for slot die coater, and slot die coater for producing electrode employing same |
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| EP4154992A4 (en) * | 2020-09-28 | 2023-12-20 | LG Energy Solution, Ltd. | Multiple slot die coater |
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| CN203886739U (en) * | 2014-03-24 | 2014-10-22 | 四川剑兴锂电池有限公司 | Coating machine for lithium battery pole piece |
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