CN112467195A - Solid-state battery, and production method and production apparatus therefor - Google Patents

Solid-state battery, and production method and production apparatus therefor Download PDF

Info

Publication number
CN112467195A
CN112467195A CN201910843204.4A CN201910843204A CN112467195A CN 112467195 A CN112467195 A CN 112467195A CN 201910843204 A CN201910843204 A CN 201910843204A CN 112467195 A CN112467195 A CN 112467195A
Authority
CN
China
Prior art keywords
solid
strip
composite
state battery
solid electrolyte
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910843204.4A
Other languages
Chinese (zh)
Inventor
李长明
辛民昌
陈久存
吴超
辛程勋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
Original Assignee
Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Jiuhuan Xinyue New Energy Technology Co ltd filed Critical Qingdao Jiuhuan Xinyue New Energy Technology Co ltd
Priority to CN201910843204.4A priority Critical patent/CN112467195A/en
Priority to PCT/CN2020/113648 priority patent/WO2021043297A1/en
Publication of CN112467195A publication Critical patent/CN112467195A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
    • H01M10/0562—Solid materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0065—Solid electrolytes
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention discloses a solid-state battery which comprises a positive electrode, a negative electrode and a solid-state electrolyte, wherein particles for preventing contact short circuit between the positive electrode and the negative electrode are contained in the solid-state electrolyte. The invention also discloses a production process and production equipment of the solid-state battery. According to the solid-state battery, the particles are arranged between the anode and the cathode, so that the anode and the cathode can be physically separated, contact short circuit between the anode and the cathode can be guaranteed not to occur all the time, the thickness of the solid-state electrolyte can be conveniently controlled when the solid-state electrolyte is manufactured, and the solid-state electrolyte can be made thinner without worrying about the problem of short circuit between the anode and the cathode.

Description

Solid-state battery, and production method and production apparatus therefor
Technical Field
The invention belongs to the technical field of energy storage equipment, and particularly relates to a solid-state battery and a production method and production equipment thereof.
Background
Solid state batteries are a battery technology. Unlike lithium ion batteries and lithium ion polymer batteries that are currently in widespread use, a solid-state battery is a battery that uses a solid electrode and a solid electrolyte. The traditional liquid lithium battery is also called as a rocking chair type battery by scientists visually, wherein two ends of the rocking chair are provided with the positive pole and the negative pole of the battery, and the middle part of the rocking chair is provided with electrolyte (liquid). The lithium ions run back and forth at the two ends of the rocking chair just like excellent athletes, and the charging and discharging process of the battery is completed in the movement process of the lithium ions from the positive pole to the negative pole and then to the positive pole. The principle of the solid-state battery is the same as that of the solid-state battery, but the electrolyte is solid, and the density and the structure of the solid-state battery can enable more charged ions to be gathered at one end to conduct larger current, so that the battery capacity is improved. Therefore, the solid-state battery will become smaller in volume for the same amount of power. Moreover, because the solid-state battery has no electrolyte, the sealing is easier, and when the solid-state battery is used on large-scale equipment such as automobiles, cooling pipes, electronic controls and the like do not need to be additionally arranged, so that the cost is saved, and the weight can be effectively reduced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a solid-state battery, a method of manufacturing the same, and an apparatus for manufacturing the same, which can effectively control the thickness of a solid-state electrolyte using a particle spacing so that the thickness can be made thinner without fear of short-circuiting between a positive electrode and a negative electrode.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention firstly provides a solid-state battery, which comprises a positive electrode, a negative electrode and a solid-state electrolyte, wherein the solid-state electrolyte contains particles for preventing contact short circuit between the positive electrode and the negative electrode.
Further, the particle diameter of the particles is equal to or less than the thickness of the solid electrolyte.
Further, the particles are made of an electronically insulating material.
Further, the particles are employed with, but not limited to, inorganic oxide particles, iodide ions, bromide ions, or astatine ions.
Further, the inorganic oxygenThe compound particles are not limited to Li1.5Al0.5Ti1.5P3O12、Li1.5Al0.5Ge1.5P3O12、Li6.5La3Zr1.5Ta0.5O12、Li6.5La3Zr1.5Nb0.5O12、Li6.28Al0.24La3Zr2O12、Li6.40Ga0.20La3Zr2O12、Li0.45La0.55TiO3Or LixPOyNzAnd (4) preparing.
Further, the positive electrode is made of, but not limited to, lithium iron phosphate, a ternary material, a sulfur-containing conductive material, a porous carbon layer air battery electrode containing metal or an organic material, a layered metal oxide material or an oxygen-containing organic polymer material;
the negative electrode is made of but not limited to metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide or silicon simple substance;
the solid electrolyte is made of one or a mixture of at least two of gel, oxide, sulfide and organic polymer.
The invention also provides a production method of the solid-state battery, which comprises the following steps:
a powder spraying step of uniformly spraying the particles on the surface of the positive strip and/or the negative strip;
a compounding step of compounding the positive electrode strip, the negative electrode strip and the solid electrolyte into a whole to obtain the solid battery;
in the compounding procedure, a first guide roller group is used for guiding a positive electrode strip to one of the compound rollers, a second guide roller group is used for guiding a negative electrode strip to the other compound roller, colloidal solid electrolyte is added to the feeding side of the compound roller group, the positive electrode strip, the negative electrode strip and the solid electrolyte are compounded into a whole by the compound roller group, and the solid electrolyte is filled in the gap between the positive electrode strip and the negative electrode strip to obtain the solid battery.
Further, a coating process for coating a layer of colloidal solid electrolyte on the surface of the positive strip and/or the negative strip is also arranged before the powder spraying process, so that the surface of the positive strip and/or the negative strip has viscosity for adhering the particles; or, a mixing process for increasing the viscosity of the particles is also arranged before the powder spraying process, the particles are mixed with the solid electrolyte, and a layer of solid electrolyte layer with viscosity is coated on the particles.
And further, adjusting the roll gap between the two composite rolls to a set value, and tightly attaching the positive strip and the negative strip to the corresponding composite rolls by utilizing negative pressure suction.
Further, the temperature in the compounding step is controlled so that the solid electrolyte remains in a colloidal state.
Further, the method also comprises a shaping procedure for gradually cooling and shaping the solid-state battery produced by the composite procedure.
Furthermore, a shaping temperature control area is arranged in the shaping procedure, the shaping temperature control area comprises at least one shaping temperature control subarea, and the temperature in the shaping temperature control subarea positioned on the upstream side is greater than or equal to the temperature in the shaping temperature control subarea positioned on the downstream side between any two shaping temperature control subareas.
Furthermore, at least one set of shaping control roller set used for controlling the shaping thickness of the solid-state battery is arranged in each shaping temperature control subarea.
The invention also provides production equipment of the solid-state battery, which comprises a compound mechanism, a first unwinding mechanism for unwinding the anode strip and a second unwinding mechanism for unwinding the cathode strip;
the composite mechanism comprises a composite roller set for combining the positive strip, the negative strip and the solid electrolyte into a whole, and the composite roller set comprises two composite rollers which are correspondingly arranged;
a first guide roller set used for guiding the positive pole strip to one of the compound rollers is arranged between the first unreeling mechanism and the compound roller set, and a second guide roller set used for guiding the negative pole strip to the other compound roller is arranged between the second unreeling mechanism and the compound roller set; a material spraying device for uniformly spraying the particles on the corresponding positive strip and/or negative strip is arranged between the first unwinding mechanism and the composite roller set and/or between the second unwinding mechanism and the composite roller set;
and a feeding device for adding the colloidal solid electrolyte is arranged on the feeding side of the two composite rollers.
Further, a distance adjusting mechanism for adjusting the distance between the rollers is arranged between the two composite rollers.
Further, a negative pressure cavity is arranged in the composite roller, and negative pressure suction holes communicated with the negative pressure cavity are formed in the surface array of the composite roller.
Further, a coating device used for coating a layer of colloidal solid electrolyte on the surface of the positive strip and/or the negative strip is arranged between the first unwinding mechanism and the composite roller set and/or between the second unwinding mechanism and the composite roller set; or, the device also comprises a mixing device for mixing the particles with the colloidal solid electrolyte and coating the particles with a layer of viscous solid electrolyte.
Further, the axes of the two composite rollers are parallel to each other and are positioned on the same horizontal plane, and the feeding device is arranged above the two composite rollers; the first guide roller group guides the positive pole strip to enter between the two composite rollers from the upper parts of the two composite rollers, and the second guide roller group guides the negative pole strip to enter between the two composite rollers from the upper parts of the two composite rollers.
Further, the feeding device comprises a material guiding plate and a solid electrolyte feeding mechanism for injecting the colloidal electrolyte, and the solid electrolyte feeding mechanism comprises:
when the material spraying device is arranged between the first unwinding mechanism and the composite roller set and the material spraying device is not arranged between the second unwinding mechanism and the composite roller set, the feeding mechanism is arranged on one side, facing the negative strip, of the material guiding plate;
when the material spraying device is not arranged between the first unwinding mechanism and the composite roller set and the material spraying device is arranged between the second unwinding mechanism and the composite roller set, the feeding mechanism is arranged on one side, facing the positive strip, of the material guiding plate;
when the material spraying device is arranged between the first unwinding mechanism and the composite roller set and between the second unwinding mechanism and the composite roller set, the number of the material guiding plates is two, the two material guiding plates are respectively arranged corresponding to the anode strip and the cathode strip, and the material feeding mechanism is arranged between the two material guiding plates.
Further, the feeding device further comprises a feeding roller for driving the colloidal solid electrolyte to be fed towards the feeding side of the composite roller set.
Furthermore, the feeding side of the composite roller set is provided with a composite temperature control area for keeping the solid electrolyte in a colloid state, and the discharging side of the composite roller set is provided with a shaping temperature control area for gradually cooling and shaping the solid electrolyte.
Furthermore, the shaping temperature control area comprises at least one shaping temperature control subarea, and the temperature in the shaping temperature control subarea positioned on the upstream side is greater than or equal to the temperature in the shaping temperature control subarea positioned on the downstream side between any two shaping temperature control subareas.
Furthermore, at least one set of shaping control roller set used for controlling the shaping quality of the solid-state battery is arranged in each shaping temperature control subarea.
The invention has the beneficial effects that:
according to the solid-state battery, the particles are arranged between the anode and the cathode, so that the anode and the cathode can be physically separated, contact short circuit between the anode and the cathode can be guaranteed not to occur all the time, the thickness of the solid-state electrolyte can be conveniently controlled when the solid-state electrolyte is manufactured, and the solid-state electrolyte can be made thinner without worrying about the problem of short circuit between the anode and the cathode.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
fig. 1 is a schematic structural view of a solid-state battery of the present invention;
fig. 2 is a schematic view showing a first structure of a production apparatus for a solid-state battery according to the present invention;
fig. 3 is a schematic view showing a second structure of the solid-state battery production apparatus of the present invention;
fig. 4 is a schematic view of a third structure of the production apparatus of a solid-state battery of the invention.
Description of reference numerals:
1-positive electrode; 2-a negative electrode; 3-a solid electrolyte; 4-granules; 5-positive strip; 6-negative pole strip material;
10-a compound mechanism; 20-a first unwinding mechanism; 21-a first guide roller set; 30-a second unwinding mechanism; 31-a second guide roller set;
40-a material spraying device; 41-thickness control device;
51-a primer plate; 52-a feeding mechanism; 53-a feed roll;
61-a brush roll; 62-a spraying device; 63-diffuse reflective surface; 64-a material spraying device; 65-coating roll;
71-shaping temperature control subareas; 72-shaping control roller set;
80-a winding mechanism.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
Example 1
Fig. 1 is a schematic view showing the structure of a solid-state battery according to the present invention. The solid-state battery of the present embodiment includes a positive electrode 1, a negative electrode 2, and a solid-state electrolyte 3, and particles 4 for preventing contact short between the positive electrode 1 and the negative electrode 2 are contained in the solid-state electrolyte 3.
Specifically, the particle diameter of the particles 4 is generally set to be equal to or less than the thickness of the solid electrolyte 3, and the particle diameter of the particles 4 of the present embodiment is equal to the thickness of the solid electrolyte 3, which can effectively prevent a contact short circuit between the positive electrode 1 and the negative electrode 2.
Further, the particles 4 are made of an electrically insulating material, that is, the particles 4 may be made of an electrically insulating and ion insulating material, and at this time, a gap between the particles 4 is required to be large so as to avoid affecting the ion conductivity of the solid electrolyte 3. The particles may also be made of an electronically insulating but ionically conducting material in order to avoid as much as possible an influence on the ionic conductivity of the solid-state electrolyte 3. Preferably, particles 4 are inorganic oxide particles, iodide ions, bromide ions, or astatine ions, but are not limited thereto. The particles 4 of the present embodiment are inorganic oxide particles, and specifically, the inorganic oxide particles are, but not limited to, Li1.5Al0.5Ti1.5P3O12、Li1.5Al0.5Ge1.5P3O12、Li6.5La3Zr1.5Ta0.5O12、Li6.5La3Zr1.5Nb0.5O12、Li6.28Al0.24La3Zr2O12、Li6.40Ga0.20La3Zr2O12、Li0.45La0.55TiO3Or LixPOyNzThe inorganic oxide particles of this embodiment are made of electrolyte ceramics, which have electronic insulation properties and can conduct ions, and the particle size of the ceramic particles can be set as required, which can meet the requirement of isolating the positive electrode 1 from the negative electrode 2.
Further, the positive electrode 1 is made of, but not limited to, lithium iron phosphate, ternary materials, sulfur-containing conductive materials, porous carbon layer air battery electrodes containing metal or organic materials, layered metal oxide materials or oxygen-containing organic polymer materials; the negative electrode 2 is made of, but not limited to, metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide or silicon simple substance; the solid electrolyte 3 is made of one or a mixture of at least two of gel, oxide, sulfide, and organic polymer. The materials used for the positive electrode 1, the negative electrode 2, and the solid electrolyte 3 are the same as those used in the prior art, and will not be described again.
The solid-state battery of this embodiment, through set up the granule between positive pole and negative pole, can separate positive pole and negative pole on the physical aspect, also can guarantee that the contact short circuit can not appear between positive pole and the negative pole all the time, therefore when preparation solid-state electrolyte, can conveniently control solid-state electrolyte's thickness, can make solid-state electrolyte thinner and do not worry the problem of positive pole and negative pole short circuit.
Example 2
Fig. 2 is a schematic diagram showing the structure of a solid-state battery production apparatus according to the present invention. The production equipment of the solid-state battery in the embodiment comprises a compound mechanism 10, a first unwinding mechanism 20 for unwinding a positive strip 5, a second unwinding mechanism 30 for unwinding a negative strip 6, and a winding mechanism 80; specifically, the composite mechanism 10 includes a composite roller set for combining the positive strip 5, the negative strip 6 and the solid electrolyte 3 into a whole, and the composite roller set includes two composite rollers correspondingly arranged; a first guide roller set 21 for guiding the positive pole strip 5 to one of the compound rollers is arranged between the first unreeling mechanism 20 and the compound roller set, and a second guide roller set 31 for guiding the negative pole strip 6 to the other compound roller is arranged between the second unreeling mechanism 30 and the compound roller set; a material spraying device 40 for uniformly spraying particles 4 on the corresponding positive strip 5 and/or negative strip 6 is arranged between the first unwinding mechanism 20 and the composite roller set and/or between the second unwinding mechanism 30 and the composite roller set; and a feeding device for adding colloidal solid electrolyte 3 is arranged on the feeding side of the two composite rollers.
Specifically, a distance adjusting mechanism for adjusting the distance between the two composite rolls is arranged between the two composite rolls and used for controlling the thickness of the solid electrolyte 3. Specifically, be equipped with the negative pressure chamber in the compound roller of this embodiment, the surface array of compound roller is equipped with the negative pressure suction hole that is linked together with the negative pressure chamber, so, can adsorb anodal strip 5 and negative pole strip 6 on the compound roller that corresponds through the mode that the negative pressure is attracted, can carry out accurate control to anodal strip 5 and negative pole strip 6 position in the composite process to the thickness of accurate control solid state electrolyte 3.
A coating device for coating a layer of colloidal solid electrolyte on the surface of the positive strip 5 and/or the negative strip 6 is arranged between the first unwinding mechanism 20 and the composite roller set and/or between the second unwinding mechanism 30 and the composite roller set; the coating device can be realized in various ways, such as: the solid electrolyte 3 is coated on the positive strip 5 or the negative strip 6 by using a brush roller 61, as shown in fig. 2; the solid electrolyte 3 is sprayed on the anode strip 5 or the cathode strip 6 by using a spraying device 62 and a diffuse reflection surface 63, specifically, the spraying device 62 sprays liquid solid electrolyte to the diffuse reflection surface 63, the liquid solid electrolyte is atomized after being diffusely reflected by the diffuse reflection surface 63, and then is uniformly sprayed on the anode strip 5 or the cathode strip 6, as shown in fig. 3; the solid electrolyte 3 is directly sprayed on the anode strip 5 or the cathode strip 6 by adopting a material spraying device 64, and the material spraying device 64 can be a linear type spray head or an atomizing spray head, which is not described in detail again, as shown in fig. 4; the solid electrolyte 3 is coated on the positive electrode strip 5 or the negative electrode strip 6 using a coating roll 65, as shown in fig. 4. In practical operation, the viscosity of the solid electrolyte can be adjusted to be low in the coating device so as to meet the use requirements of different coating modes, and the description is not repeated. By providing the coating device, the viscosity of the positive electrode strip 5 or the negative electrode strip 6 can be increased, so that the particles can be bonded to prevent the particles from falling off. Of course, a thickness control device 41 may also be provided between the coating device and the powder spraying device 40 for controlling the thickness of the layer of gelled solid electrolyte applied by the coating device.
Of course, other ways to adhere the particles to the positive electrode strip 5 or the negative electrode strip 6 can be used, such as using a mixing device for mixing the particles with the colloidal solid electrolyte and coating the particles with a layer of the viscous solid electrolyte, and after coating the particles with a layer of the viscous solid electrolyte, spraying the particles on the positive electrode strip 5 or the negative electrode strip 6 by using the spraying device 40, so as to achieve the technical purpose of adhering the particles 4.
Further, the axes of the two composite rollers of the embodiment are parallel to each other and are positioned on the same horizontal plane, and the feeding device is arranged above the two composite rollers; the first guide roller group 21 guides the positive strip 5 to enter between the two composite rollers from above the two composite rollers, and the second guide roller group 31 guides the negative strip 6 to enter between the two composite rollers from above the two composite rollers.
Further, the charging device includes a feed plate 51 and a solid electrolyte charging mechanism 52 for injecting the gel, and: when the material spraying device 40 is arranged between the first unwinding mechanism 20 and the composite roller set and the material spraying device is not arranged between the second unwinding mechanism 30 and the composite roller set, the feeding mechanism 52 is arranged on one side of the material guiding plate 51 facing the negative electrode strip 6, as shown in fig. 2;
when the material spraying device is not arranged between the first unwinding mechanism 20 and the composite roller set and the material spraying device 40 is arranged between the second unwinding mechanism 30 and the composite roller set, the feeding mechanism 52 is arranged on one side of the material guiding plate 51 facing the anode strip 5, as shown in fig. 3;
when the material spraying devices 40 are arranged between the first unwinding mechanism 20 and the composite roller set and between the second unwinding mechanism 30 and the composite roller set, two material guiding plates 51 are arranged, the two material guiding plates 51 are respectively arranged corresponding to the anode strip 5 and the cathode strip 6, and the feeding mechanism is arranged between the two material guiding plates 51, as shown in fig. 4.
Further, the feeding device further comprises a feeding roller 53 for driving the colloidal solid electrolyte to be fed towards the feeding side of the composite roller group, and the colloidal solid electrolyte is driven to be fed, so that the product quality is improved.
Furthermore, the feeding side of the composite roller group is provided with a composite temperature control area 11 for keeping the solid electrolyte in a colloid state, and the discharging side is provided with a shaping temperature control area for gradually cooling and shaping the solid electrolyte. The shaping temperature control zone of the embodiment includes at least one shaping temperature control sub-zone 71, and between any two shaping temperature control sub-zones 71, the temperature in the shaping temperature control sub-zone 71 located on the upstream side is greater than or equal to the temperature in the shaping temperature control sub-zone 71 located on the downstream side, and at least one set of shaping control roller set 72 for controlling the shaping quality of the solid-state battery is arranged in each shaping temperature control sub-zone 71, so that the solid-state electrolyte can be gradually cooled to be solidified, and the shaping quality of the solid-state battery can be improved.
A specific embodiment of the production method of the solid-state battery of the present embodiment will be described in detail below with reference to the above-described production apparatus of the solid-state battery.
The method for producing the solid-state battery of the embodiment includes:
a powder spraying step of uniformly spraying particles 4 on the surface of the positive strip 5 and/or the negative strip 6;
a compounding step of compounding the positive electrode strip 5, the negative electrode strip 6 and the solid electrolyte 3 into a whole to obtain a solid battery;
in the compounding step, the positive electrode strip 5 is guided to one of the compound rolls by the first guide roll group 21, the negative electrode strip 6 is guided to the other compound roll by the second guide roll group 31, the colloidal solid electrolyte 3 is added to the feed side of the compound roll group, the positive electrode strip 5, the negative electrode strip 6 and the solid electrolyte 3 are compounded into a whole by the compound roll group, and the solid electrolyte is filled in the gap between the positive electrode strip 5 and the negative electrode strip 6 to obtain the solid battery.
In the embodiment, a coating process for coating a layer of colloidal solid electrolyte on the surface of the positive strip 5 and/or the negative strip 6 is further provided before the powder spraying process, so that the surface of the positive strip 5 and/or the negative strip 6 has the viscosity of being adhered with the particles 4; or, a mixing process for increasing the viscosity of the particles is also arranged before the powder spraying process, the particles are mixed with the solid electrolyte, and a layer of solid electrolyte layer with viscosity is coated on the particles. Specifically, the coating process can be implemented in various ways, such as: the solid electrolyte 3 is coated on the positive strip 5 or the negative strip 6 by using a brush roller 61, as shown in fig. 2; the solid electrolyte 3 is sprayed on the anode strip 5 or the cathode strip 6 by using a spraying device 62 and a diffuse reflection surface 63, specifically, the spraying device 62 sprays liquid solid electrolyte to the diffuse reflection surface 63, the liquid solid electrolyte is atomized after being diffusely reflected by the diffuse reflection surface 63, and then is uniformly sprayed on the anode strip 5 or the cathode strip 6, as shown in fig. 3; the solid electrolyte 3 is directly sprayed on the anode strip 5 or the cathode strip 6 by adopting a material spraying device 64, and the material spraying device 64 can be a linear type spray head or an atomizing spray head, which is not described in detail again, as shown in fig. 4; the solid electrolyte 3 is coated on the positive electrode strip 5 or the negative electrode strip 6 using a coating roll 65, as shown in fig. 4. In practical operation, the viscosity of the solid electrolyte can be adjusted to be low in the coating device so as to meet the use requirements of different coating modes, and the description is not repeated. By providing the coating device, the viscosity of the positive electrode strip 5 or the negative electrode strip 6 can be increased, so that the particles can be bonded to prevent the particles from falling off.
Further, the roll gap between the two composite rolls is adjusted to a set value, and the positive strip 5 and the negative strip 6 are tightly attached to the corresponding composite rolls by utilizing negative pressure suction. Therefore, the positive strip 5 and the negative strip 6 can be adsorbed on the corresponding composite rollers in a negative pressure suction mode, and the positions of the positive strip 5 and the negative strip 6 in the composite process can be accurately controlled so as to accurately control the thickness of the solid electrolyte 3.
Further, the temperature in the composite step is controlled so that the solid electrolyte remains colloidal, and in this example, a composite temperature control zone 11 for maintaining the solid electrolyte in colloidal state is provided on the feed side of the composite roll group.
Further, the method for producing a solid-state battery of this embodiment further includes a shaping step of gradually cooling and shaping the solid-state battery produced by the composite step. And a shaping temperature control area is arranged in the shaping procedure, the shaping temperature control area comprises at least one shaping temperature control subarea, and the temperature in the shaping temperature control subarea positioned on one side of the upstream is more than or equal to the temperature in the shaping temperature control subarea positioned on one side of the downstream between any two shaping temperature control subareas. At least one shaping control roller set used for controlling the shaping thickness of the solid-state battery is arranged in each shaping temperature control subarea.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (23)

1. A solid-state battery comprising a positive electrode, a negative electrode, and a solid-state electrolyte, characterized in that: particles for preventing contact short circuit between the positive electrode and the negative electrode are contained in the solid electrolyte.
2. The solid-state battery according to claim 1, characterized in that: the particle diameter of the particles is equal to or less than the thickness of the solid electrolyte.
3. The solid-state battery according to claim 1 or 2, characterized in that: the particles are made of an electronically insulating material.
4. The solid-state battery according to claim 3, characterized in that: the particles are used, but not limited to, inorganic oxide particles, iodide ions, bromide ions, or astatine ions.
5. The solid-state battery according to claim 4, characterized in that: the inorganic oxide particles are taken to be but not limited to Li1.5Al0.5Ti1.5P3O12、Li1.5Al0.5Ge1.5P3O12、Li6.5La3Zr1.5Ta0.5O12、Li6.5La3Zr1.5Nb0.5O12、Li6.28Al0.24La3Zr2O12、Li6.40Ga0.20La3Zr2O12、Li0.45La0.55TiO3Or LixPOyNzAnd (4) preparing.
6. The solid-state battery according to claim 1 or 2, characterized in that:
the anode is made of, but not limited to, lithium iron phosphate, a ternary material, a sulfur-containing conductive material, a porous carbon layer air battery electrode containing metal or an organic material, a layered metal oxide material or an oxygen-containing organic polymer material;
the negative electrode is made of but not limited to metal lithium, metal sodium, metal aluminum, metal magnesium, metal potassium, graphene, hard carbon, silicon oxide or silicon simple substance;
the solid electrolyte is made of one or a mixture of at least two of gel, oxide, sulfide and organic polymer.
7. A method for producing a solid-state battery according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
a powder spraying step of uniformly spraying the particles on the surface of the positive strip and/or the negative strip;
a compounding step of compounding the positive electrode strip, the negative electrode strip and the solid electrolyte into a whole to obtain the solid battery;
in the compounding procedure, a first guide roller group is used for guiding a positive electrode strip to one of the compound rollers, a second guide roller group is used for guiding a negative electrode strip to the other compound roller, colloidal solid electrolyte is added to the feeding side of the compound roller group, the positive electrode strip, the negative electrode strip and the solid electrolyte are compounded into a whole by the compound roller group, and the solid electrolyte is filled in the gap between the positive electrode strip and the negative electrode strip to obtain the solid battery.
8. The solid-state battery production method according to claim 7, characterized in that: a coating process for coating a layer of gelatinous solid electrolyte on the surface of the positive strip and/or the negative strip is also arranged before the powder spraying process, so that the surface of the positive strip and/or the negative strip has viscosity for adhering the particles; or, a mixing process for increasing the viscosity of the particles is also arranged before the powder spraying process, the particles are mixed with the solid electrolyte, and a layer of solid electrolyte layer with viscosity is coated on the particles.
9. The solid-state battery production method according to claim 7, characterized in that: and adjusting the roll gap between the two composite rolls to a set value, and tightly attaching the positive strip and the negative strip to the corresponding composite rolls by utilizing negative pressure suction.
10. The solid-state battery production method according to claim 7, characterized in that: the temperature in the compounding step is controlled so that the solid electrolyte remains in a colloidal state.
11. The solid-state battery production method according to claim 7, characterized in that: and the shaping process is used for gradually cooling and shaping the solid-state battery produced by the compounding process.
12. The solid-state battery production method according to claim 11, characterized in that: and a shaping temperature control area is arranged in the shaping procedure, the shaping temperature control area comprises at least one shaping temperature control subarea, and the temperature in the shaping temperature control subarea positioned on the upstream side is more than or equal to the temperature in the shaping temperature control subarea positioned on the downstream side between any two shaping temperature control subareas.
13. The solid-state battery production method according to claim 12, characterized in that: at least one set of shaping control roller set used for controlling the shaping thickness of the solid-state battery is arranged in each shaping temperature control subarea.
14. A production apparatus for a solid-state battery according to any one of claims 1 to 6, characterized in that: the device comprises a composite mechanism, a first unwinding mechanism for unwinding a positive strip and a second unwinding mechanism for unwinding a negative strip;
the composite mechanism comprises a composite roller set for combining the positive strip, the negative strip and the solid electrolyte into a whole, and the composite roller set comprises two composite rollers which are correspondingly arranged;
a first guide roller set used for guiding the positive pole strip to one of the compound rollers is arranged between the first unreeling mechanism and the compound roller set, and a second guide roller set used for guiding the negative pole strip to the other compound roller is arranged between the second unreeling mechanism and the compound roller set; a material spraying device for uniformly spraying the particles on the corresponding positive strip and/or negative strip is arranged between the first unwinding mechanism and the composite roller set and/or between the second unwinding mechanism and the composite roller set;
and a feeding device for adding the colloidal solid electrolyte is arranged on the feeding side of the two composite rollers.
15. The solid-state battery production apparatus according to claim 14, characterized in that: and a distance adjusting mechanism for adjusting the distance between the rollers is arranged between the two composite rollers.
16. The solid-state battery production apparatus according to claim 14, characterized in that: and a negative pressure cavity is arranged in the composite roller, and negative pressure suction holes communicated with the negative pressure cavity are arranged on the surface array of the composite roller.
17. The solid-state battery production apparatus according to claim 14, characterized in that: a coating device used for coating a layer of colloidal solid electrolyte on the surface of the positive strip and/or the negative strip is arranged between the first unwinding mechanism and the composite roller set and/or between the second unwinding mechanism and the composite roller set; or, the device also comprises a mixing device for mixing the particles with the colloidal solid electrolyte and coating the particles with a layer of viscous solid electrolyte.
18. The solid-state battery production apparatus according to claim 14, characterized in that: the axes of the two composite rollers are parallel to each other and are positioned on the same horizontal plane, and the feeding device is arranged above the two composite rollers; the first guide roller group guides the positive pole strip to enter between the two composite rollers from the upper parts of the two composite rollers, and the second guide roller group guides the negative pole strip to enter between the two composite rollers from the upper parts of the two composite rollers.
19. The solid-state battery production apparatus according to claim 18, characterized in that: the feeding device comprises a material guiding plate and a solid electrolyte feeding mechanism for injecting colloidal electrolyte, and the solid electrolyte feeding mechanism comprises:
when the material spraying device is arranged between the first unwinding mechanism and the composite roller set and the material spraying device is not arranged between the second unwinding mechanism and the composite roller set, the feeding mechanism is arranged on one side, facing the negative strip, of the material guiding plate;
when the material spraying device is not arranged between the first unwinding mechanism and the composite roller set and the material spraying device is arranged between the second unwinding mechanism and the composite roller set, the feeding mechanism is arranged on one side, facing the positive strip, of the material guiding plate;
when the material spraying device is arranged between the first unwinding mechanism and the composite roller set and between the second unwinding mechanism and the composite roller set, the number of the material guiding plates is two, the two material guiding plates are respectively arranged corresponding to the anode strip and the cathode strip, and the material feeding mechanism is arranged between the two material guiding plates.
20. The solid-state battery production apparatus according to claim 19, characterized in that: the feeding device further comprises a feeding roller for driving the colloidal solid electrolyte to be fed towards the feeding side of the composite roller set.
21. The solid-state battery production apparatus according to claim 14, characterized in that: the feeding side of the composite roller set is provided with a composite temperature control area which enables the solid electrolyte to be kept in a colloid shape, and the discharging side of the composite roller set is provided with a shaping temperature control area which enables the solid electrolyte to be gradually cooled and shaped.
22. The solid-state battery production apparatus according to claim 21, characterized in that: the shaping temperature control area comprises at least one shaping temperature control subarea, and the temperature in the shaping temperature control subarea positioned on the upstream side is more than or equal to the temperature in the shaping temperature control subarea positioned on the downstream side between any two shaping temperature control subareas.
23. The solid-state battery production apparatus according to claim 22, characterized in that: at least one set of shaping control roller set used for controlling the shaping quality of the solid-state battery is arranged in each shaping temperature control subarea.
CN201910843204.4A 2019-09-06 2019-09-06 Solid-state battery, and production method and production apparatus therefor Pending CN112467195A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910843204.4A CN112467195A (en) 2019-09-06 2019-09-06 Solid-state battery, and production method and production apparatus therefor
PCT/CN2020/113648 WO2021043297A1 (en) 2019-09-06 2020-09-06 Solid-state battery and manufacturing method and manufacturing apparatus thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910843204.4A CN112467195A (en) 2019-09-06 2019-09-06 Solid-state battery, and production method and production apparatus therefor

Publications (1)

Publication Number Publication Date
CN112467195A true CN112467195A (en) 2021-03-09

Family

ID=74807798

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910843204.4A Pending CN112467195A (en) 2019-09-06 2019-09-06 Solid-state battery, and production method and production apparatus therefor

Country Status (2)

Country Link
CN (1) CN112467195A (en)
WO (1) WO2021043297A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI786012B (en) * 2022-04-13 2022-12-01 量子金機股份有限公司 Automated solid-state battery production equipment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089023A1 (en) * 2000-05-19 2001-11-22 Korea Institute Of Science And Technology A lithium secondary battery comprising a super fine fibrous polymer electrolyte and its fabrication method
JP4108981B2 (en) * 2000-05-19 2008-06-25 コリア インスティテュート オブ サイエンス アンド テクノロジー Hybrid polymer electrolyte, lithium secondary battery including the same, and method for producing the same
EP1429412B1 (en) * 2001-08-29 2010-12-29 Panasonic Corporation Production method of lithuim secondary battery and production device therefor
JP2003303622A (en) * 2002-04-10 2003-10-24 Sony Corp Battery and its manufacturing method
JP2004014373A (en) * 2002-06-10 2004-01-15 Tdk Corp Solid electrolyte battery
JP4734912B2 (en) * 2004-12-17 2011-07-27 日産自動車株式会社 Lithium ion battery and manufacturing method thereof
CN110112469A (en) * 2019-03-13 2019-08-09 合肥国轩高科动力能源有限公司 A kind of processing method of lithium-ion electric core and the processing unit (plant) of composite battery pole piece
CN210167439U (en) * 2019-09-06 2020-03-20 青岛九环新越新能源科技股份有限公司 Inorganic oxide particle-based electrode and solid-state battery
CN210692701U (en) * 2019-09-06 2020-06-05 青岛九环新越新能源科技股份有限公司 Solid-state battery and production equipment thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI786012B (en) * 2022-04-13 2022-12-01 量子金機股份有限公司 Automated solid-state battery production equipment

Also Published As

Publication number Publication date
WO2021043297A1 (en) 2021-03-11

Similar Documents

Publication Publication Date Title
CN210692701U (en) Solid-state battery and production equipment thereof
US11127943B2 (en) Rechargeable alkaline metal and alkaline earth electrodes having controlled dendritic growth and methods for making and using same
KR100763090B1 (en) Method for producing lithium ion secondary battery
CN1284261C (en) Nonaqueous electrolyte secondary battery and its manufacture
US7993782B2 (en) All-solid lithium battery
CN100431202C (en) Negative electrode for secondary cell,secondary cell, and method for producing negative electrode for secondary cell
JP5383463B2 (en) Manufacturing method of all-solid-state lithium ion secondary battery
CN110335992A (en) A kind of electrodes of lithium-ion batteries prelithiation device
JP6108166B2 (en) Secondary battery electrode
CN109888200A (en) Battery cathode coating, battery cathode sheet and its manufacturing method, lithium ion battery
CN105024040A (en) Two-side coating, laminating and assembling technology and device for lithium battery manufacturing process
CN105470564A (en) Solid electrolyte membrane, preparation method of solid electrolyte membrane and lithium ion battery
CN103972464B (en) A kind of anode of solid lithium battery and preparation method thereof and solid lithium battery
JP5695062B2 (en) Electrode for ion secondary battery, method for producing electrode for ion secondary battery, lithium ion secondary battery, and magnesium ion secondary battery
CN109524621A (en) A kind of prelithiation method and device for the lithium ion battery negative electrode that prelithiation degree is controllable
CN111934008B (en) Layered composite solid electrolyte and preparation method and application thereof
CN110931848A (en) Preparation method of all-solid-state electrolyte battery and all-solid-state electrolyte battery
CN110165152A (en) Solid-state anode composite material, preparation method and application
CN113690418A (en) Modified active material for semi-solid battery and preparation method and application thereof
CN112467195A (en) Solid-state battery, and production method and production apparatus therefor
CN204760475U (en) A double -side coating lamination packaging technology for lithium cell manufacturing in -process and device thereof
KR20070094156A (en) Electrode with high capacity and preparation method thereof
JPWO2018164050A1 (en) Inorganic solid electrolyte material, and slurry using the same, solid electrolyte membrane for all solid secondary battery, solid electrolyte sheet for all solid secondary battery, positive electrode active material film for all solid secondary battery, for all solid secondary battery Negative electrode active material film, electrode sheet for all-solid-state secondary battery, all-solid-state secondary battery, and method for producing all-solid-state secondary battery
CN114497463A (en) Method for continuously supplementing lithium to negative electrode of lithium ion battery
CN112536194A (en) Double-roller coating equipment for solid energy storage electrode strip

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination