CN114256500A - Band-shaped flexible solid-state battery capable of being cut - Google Patents
Band-shaped flexible solid-state battery capable of being cut Download PDFInfo
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- CN114256500A CN114256500A CN202111454863.2A CN202111454863A CN114256500A CN 114256500 A CN114256500 A CN 114256500A CN 202111454863 A CN202111454863 A CN 202111454863A CN 114256500 A CN114256500 A CN 114256500A
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- state battery
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Classifications
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/058—Construction or manufacture
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a strip-shaped flexible solid-state battery capable of being cut, which comprises a battery cell and a packaging part wrapped outside the battery cell; the battery core comprises a plurality of solid-state battery units, a filler, a first conductive path and a second conductive path; the plurality of solid-state battery units are transversely arranged side by side, a gap exists between any two adjacent solid-state battery units, and the filler is filled in the gap between any two adjacent solid-state battery units; the solid-state battery unit comprises a positive electrode and a negative electrode, the first conducting path is connected with the positive electrodes of the solid-state battery units, the second conducting path is connected with the negative electrodes of the solid-state battery units, and the solid-state battery units are connected in parallel. The invention provides a strip-shaped flexible solid-state battery capable of being cut, which has the characteristic of being cut and can still stably work after being cut.
Description
Technical Field
The invention relates to the technical field of solid-state batteries, in particular to a strip-shaped flexible solid-state battery capable of being cut.
Background
Along with the development of wearable technology, novel equipment including smart watch, intelligent glasses, intelligent clothing etc. emerges fast, for the normal work of maintaining this type of equipment, need use specific battery to provide the energy. The flexible solid-state battery has the characteristics of good flexibility, high safety and the like, and is particularly suitable for being used as an energy storage device to be applied to wearable equipment. Due to the fact that the age, the sex, the body type and the like of target people are greatly different, the wearable device needs to produce various models and even products with customizable characteristics in order to meet the requirements of different people. The traditional lithium battery production mode is mainly characterized in that large-scale production is carried out according to specific battery specification models so as to reduce the production cost of the battery and improve the production efficiency. Such batteries are generally not flexible, and the shape, capacity, and the like of the product are generally fixed. There are some flexible solid-state battery solutions (for example, patents CN 106784988A, CN 106098971B, CN 111446486A, etc.), but these solutions mainly solve the flexibility problem of the battery. The size and capacity of the battery provided by the battery manufacturer are generally fixed, and the size and capacity of the battery cannot be flexibly adjusted by the wearable device manufacturer according to different products. Therefore, development of a flexible solid-state battery having cuttable characteristics and stable operation after cutting can effectively solve the above-mentioned problems.
Disclosure of Invention
Based on the technical problems in the prior art, the invention provides a strip-shaped flexible solid-state battery capable of being cut, which has the characteristic of being cut, can still stably work after being cut, and can meet the requirements of wearable equipment and the like on flexible and variable battery size and capacity in the production process.
The invention provides a strip-shaped flexible solid-state battery capable of being cut, which comprises a battery cell and a packaging part wrapped outside the battery cell; the battery core comprises a plurality of solid-state battery units, a filler, a first conductive path and a second conductive path; the plurality of solid-state battery units are transversely arranged side by side, a gap exists between any two adjacent solid-state battery units, and the filler is filled in the gap between any two adjacent solid-state battery units; the solid-state battery unit comprises a positive electrode and a negative electrode, the first conducting path is connected with the positive electrodes of the solid-state battery units, the second conducting path is connected with the negative electrodes of the solid-state battery units, and the solid-state battery units are connected in parallel.
Preferably, the encapsulation is made of a flexible and bendable material.
Preferably, the flexible bendable material is one of a flexible polymer material, a flexible polymer metal composite material, or a mixture of two.
Preferably, the flexible and bendable material is one or a mixture of polyimide, polyethylene, polyvinyl chloride, polymethyl methacrylate, polyethylene naphthalate, polystyrene, polypropylene, polyamide and aluminum plastic film.
Preferably, the encapsulation part is made of an encapsulation part upper layer and an encapsulation part lower layer, and the encapsulation part upper layer and the encapsulation part lower layer are made of the same material or different materials.
Preferably, the thickness of the encapsulation is 30-1000 microns.
Preferably, the thickness of the encapsulation is 50-200 microns.
Preferably, the thickness of the encapsulation is 68 microns.
Preferably, the first and second electrically conductive paths are each made of a bendable electrically conductive material.
Preferably, the bendable conductive material is one or a mixture of two of a metal conductive material and a non-metal conductive material.
Preferably, the metal conductive material is one of metal aluminum, metal nickel, metal copper, metal titanium and an alloy material containing at least one metal of aluminum, nickel, copper and titanium; the non-metal conductive material is one of carbon paper, carbon cloth, carbon fiber, carbon nano tube and graphene or a compound containing one or more of carbon paper, carbon cloth, carbon fiber, carbon nano tube and graphene.
Preferably, the first conductive path and the second conductive path have one of a linear shape, a belt shape, a film shape, and a mesh shape.
Preferably, the distance between any two adjacent solid-state battery cells is 0.1-5 cm.
Preferably, the filler is an insulating material; the filler does not cause a battery short circuit after contacting the solid-state battery cell or the first and second conductive paths.
Preferably, the filler is a solid insulating material with certain deformation capacity or a liquid insulating material capable of solidifying under certain conditions.
Preferably, the filler is one or a mixture of polyimide, polyethylene, polyvinyl chloride, polymethyl methacrylate, polyethylene naphthalate, polystyrene, polypropylene and polyamide.
Preferably, the first conductive path is an aluminum tape with a width of 0.1-2cm, and the second conductive path is a nickel tape with a width of 0.1-2 cm.
Preferably, the width of the first conductive path is 0.5cm, and the width of the second conductive path is 0.5 cm.
Preferably, the ribbon-shaped flexible solid-state battery has a length of 0.05 to 100m, an aspect ratio of 1.5 to 5000: 1; the battery core comprises 2-2000 solid-state battery units, and the capacity of each solid-state battery unit is 1-200 mAh.
Preferably, the ribbon-shaped flexible solid-state battery has a length of 15 meters and an aspect ratio of 600: 1; the battery core comprises 500 solid-state battery units, and the capacity of each solid-state battery unit is 20 mAh.
Preferably, the solid-state battery unit can be a single-layer laminated battery or a multi-layer battery; the single-layer batteries in the multi-layer battery can be connected in series or in parallel.
Preferably, the solid-state battery cell is a single-layer solid-state lithium battery.
Preferably, the solid-state battery unit is formed by stacking a negative electrode, a solid electrolyte layer and a positive electrode in sequence and then tightly pressing the negative electrode, the solid electrolyte layer and the positive electrode into a whole by means of hot pressing and the like; the negative electrode comprises a negative electrode current collector and a negative electrode active layer; the positive electrode includes a positive electrode current collector and a positive electrode active layer.
Preferably, in the preparation process of the positive electrode, the positive electrode active material is mixed with the conductive agent, the ionic conductor and the binder, then the mixture is added with the solvent, mixed and stirred to prepare slurry, and the slurry is coated on the positive electrode current collector and then vacuum-dried to obtain the positive electrode; the positive electrode current collector may use a metallic conductive material or a non-metallic conductive material; preferably an aluminium foil with a thickness of 16 microns is used.
Preferably, in the preparation process of the negative electrode, the negative electrode active material is mixed with the conductive agent, the ionic conductor and the binder, then the mixture is added with the solvent, mixed and stirred to prepare slurry, and the slurry is coated on the negative electrode current collector and then vacuum-dried; the negative electrode current collector may use a metallic conductive material or a non-metallic conductive material, preferably a copper foil having a thickness of 8 μm;
preferably, the solid-state battery cell negative electrode current collector may also be formed by rolling lithium metal into a thin film having a thickness of 5 to 100 μm and then compounding with a copper foil.
Preferably, the solid electrolyte layer of the solid-state battery cell may be an inorganic solid electrolyte layer, an organic solid electrolyte layer, or an organic-inorganic composite solid electrolyte layer; it is preferable to use an organic-inorganic composite solid electrolyte layer having a thickness of 10 to 100 micrometers, preferably, 50 micrometers.
Preferably, a buffer layer with the thickness of 5 nm-200 microns is additionally arranged between the negative electrode and the solid electrolyte layer, the positive electrode and the solid electrolyte layer of the solid battery unit, and the interface stability of the electrode and the solid electrolyte layer can be improved. The buffer layer may be a solid material or a gel material containing no more than 40 wt% liquid; preferably a gel material with a thickness of 20 microns containing 20 wt% ionic liquid is used as a buffer layer; preferably, the ionic liquid used for the buffer layer between the positive electrode and the solid electrolyte layer is a high-voltage-resistant ionic liquid, and the ionic liquid used for the buffer layer between the negative electrode and the solid electrolyte layer is an ionic liquid stable to the negative electrode.
Placing the solid-state battery units, the first conductive path and the second conductive path in the packaging part, and adding fillers into gaps among the solid-state battery units, wherein the fillers can be solids with certain deformation capacity or liquids capable of being solidified under certain conditions; preferably, the filler is a resin that can be tightly adhered to the sealing part after heating and has a good water and oxygen barrier ability.
The packaging part is made of flexible bendable materials and has certain capacity of blocking outside water and oxygen, and the packaging part is made of an upper packaging part layer and a lower packaging part layer and isolates the first conductive path, the second conductive path, the solid-state battery unit and fillers among the solid-state battery units from the outside and blocks water, oxygen and the like from entering the battery. The two layers of packaging parts can be made of the same material or two different materials according to actual requirements.
Preferably, the packaging part is used for packaging the battery cell by hot-press packaging and glue bonding.
Preferably, the first conductive path and the second conductive path may also have a shape of a profile structure formed by one of a line shape, a belt shape, a film shape, and a net shape; or a shape formed by bending or winding one of a linear shape, a belt shape, a film shape, and a net shape; with these particular configurations, the first and second conductive paths may have some stretchable capability in addition to the bendable characteristic.
Preferably, in the preparation process of the battery, the first conductive path and the second conductive path may be connected to the solid-state battery cell as independent components according to production conditions, or may be directly attached to the inner side of the packaging part in advance, and then connected to the solid-state battery cell during subsequent assembly.
Preferably, the connection of the first and second conductive paths to the solid-state battery cell may be in the form of one of welding, conductive glue connection, and adhesive tape connection during the preparation of the battery.
Preferably, the solid-state battery cell may be rigid or flexible according to the difference between the selected solid electrolyte layer and the selected positive and negative electrode current collectors.
Preferably, the filler is a solid insulating material with certain deformation capacity or a liquid insulating material capable of being solidified under certain conditions, and the filler cannot be broken after being cut, can still be tightly attached to the packaging part, the first conductive path and the second conductive path, and has the function of preventing water and oxygen from entering the battery.
The flexible solid-state battery to be cut has a total number of solid-state battery cells N, a length of each repeating unit L (including a length of the solid-state battery cells and a length of intervals between the solid-state battery cells), and a capacity of each solid-state battery cell C. The cut battery can contain N solid-state battery cells according to actual production needs, wherein N can be any natural number of 1, 2 and 3 … N. The corresponding cut cell length is L × n and the cell capacity is C × n. Therefore, the length and the capacity of the cut battery can be continuously adjusted.
In order to further improve the stability of the battery in the working process, protective layers can be added at the notches on the two sides of the cut battery. The protective layer may be a solid having water and oxygen barrier properties, or may be a liquid having water and oxygen barrier properties after curing.
In addition to the ability to cut ribbon-shaped flexible solid-state batteries to capacity length requirements, holes can be cut in the filler areas between the solid-state battery cells to achieve certain specific requirements.
Preferably, an aluminum plastic film with a thickness of 50-200 microns is used as the packaging part material, and an aluminum plastic film with a thickness of 68 microns is preferably used as the packaging part material.
The solid-state battery units are transversely arranged in parallel at intervals of 0.1-2cm, and are connected in parallel. The solid-state battery unit and the first conductive path and the second conductive path are connected through welding or bonding.
Preferably, the widths of the fillers between two adjacent solid battery cells may be the same or different; the filler comprises a pre-cutting filler area and a non-cutting filler area; and cutting the battery in the pre-cut filler area.
The belt-shaped flexible solid-state battery capable of being cut consists of a flexible packaging part, a first conductive path, a second conductive path, a solid-state battery unit and fillers among the solid-state battery units, wherein the solid-state battery units are connected in parallel through the first conductive path and the second conductive path according to a certain distance to form a battery string, gaps among the battery units are filled with materials with water and oxygen blocking functions, the upper surface and the lower surface of the battery string are sealed through the flexible packaging part, the belt-shaped flexible solid-state battery is finally prepared, the battery can be cut in the area of the fillers, the active area of the battery is isolated by a cutting area, so that the battery can still stably work after being cut, part of the fillers can be peeled off at the first conductive path and the second conductive path of the cut battery, and a section of the fillers are exposed to serve as a positive electrode interface and a negative electrode interface of the battery.
The belt-shaped flexible solid-state battery capable of being cut can meet the bending, folding and other functions of a common flexible battery, can be cut, assembled and used according to the actual production requirements, and meets the requirements of wearable equipment and the like on flexible and variable battery size and capacity in the production process.
Drawings
Fig. 1 is a schematic structural view of a ribbon-shaped flexible solid-state battery according to the present invention;
fig. 2 is a detailed structural diagram of the ribbon-shaped flexible solid-state battery according to the present invention;
fig. 3 is a diagram of an application of the ribbon-shaped flexible solid-state battery according to the present invention;
fig. 4 is a diagram of another application of the ribbon-shaped flexible solid-state battery of the present invention;
fig. 5 is a structural design diagram of a ribbon-shaped flexible solid-state battery according to the present invention;
fig. 6 is a diagram showing another structural design of the ribbon-shaped flexible solid-state battery according to the present invention;
fig. 7 is a diagram of one use of the ribbon-shaped flexible solid-state battery of the present invention;
fig. 8 is a diagram showing another mode of use of the ribbon-shaped flexible solid-state battery according to the present invention.
In the figure, 1 is a packaging part, 101 is an upper packaging part layer in contact with a positive electrode, 102 is a lower packaging part layer in contact with a negative electrode, 2 is a first conductive path, 3 is a solid battery unit, 4 is a filler between the solid battery units, 5 is a second conductive path, 301 is a positive electrode current collector, 302 is a positive electrode active layer, 303 is a first buffer layer between the positive electrode active layer and the solid electrolyte layer, 304 is the solid electrolyte layer, 305 is a second buffer layer between the negative electrode active layer and the solid electrolyte layer, 307 is a negative electrode current collector, 6 is a protective layer, and 7 is an opening; 401 is a pre-trim filler area and 402 is a non-trim filler area.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
Referring to fig. 1, the band-shaped flexible solid-state battery of the present invention includes a battery cell and a packaging part 1 wrapped outside the battery cell; the cell comprises a plurality of solid-state battery cells 3, a filler 4, a first conductive path 2 and a second conductive path 5; the plurality of solid-state battery units 3 are transversely arranged side by side, a gap exists between any two adjacent solid-state battery units 3, and the filler 4 is filled in the gap between any two adjacent solid-state battery units 3; the solid-state battery unit 3 comprises a positive electrode and a negative electrode, the first conducting path 2 is connected with the positive electrodes of the plurality of solid-state battery units 3, the second conducting path 5 is connected with the negative electrodes of the plurality of solid-state battery units 3, and the plurality of solid-state battery units 3 are connected in parallel; the packaging part 1 is made of polyimide material and has a thickness of 68 microns; the first conductive path 2 is an aluminum strip with a width of 0.5 cm; the second conductive path 5 is a nickel strip with a width of 0.5 cm; the distance between any two adjacent solid-state battery units 3 is 0.8 cm; the filler 4 is polyethylene; the battery cell comprises 10 solid-state battery units 3, and the capacity of each solid-state battery unit 3 is 30 mAh.
The assembled strip-shaped solid-state battery can be stored and packaged in a winding manner or the like. The strip-shaped batteries can be sent to downstream production enterprises to be cut and used according to production requirements.
Example 2
Referring to fig. 1, the present invention provides a cuttable ribbon-shaped flexible solid-state battery, which includes a battery cell and a package 1 wrapped outside the battery cell; the cell comprises a plurality of solid-state battery cells 3, a filler 4, a first conductive path 2 and a second conductive path 5; the plurality of solid-state battery units 3 are transversely arranged side by side, a gap exists between any two adjacent solid-state battery units 3, and the filler 4 is filled in the gap between any two adjacent solid-state battery units 3; the solid-state battery unit 3 comprises a positive electrode and a negative electrode, the first conductive path 2 is connected with the positive electrodes of the plurality of solid-state battery units 3, and the second conductive path 5 is connected with the negative electrodes of the plurality of solid-state battery units 3, so that the plurality of solid-state battery units 3 are connected in parallel;
the packaging part 1 is made of an aluminum-plastic film; the thickness of the package portion 1 is 30 micrometers;
the first conductive path 2 and the second conductive path 5 are both made of an aluminum alloy material; the first conductive path 2 and the second conductive path 5 are both net-shaped;
the distance between any two adjacent solid-state battery units 3 is 0.8 cm;
the filler 4 is a polyethylene insulating material;
the ribbon-shaped flexible solid-state battery has a length of 0.5 m and an aspect ratio of 10: 1; the battery core comprises 10 solid-state battery units 3, and the capacity of each solid-state battery unit 3 is 100 mAh.
Example 3
Referring to fig. 1 and 2, the present invention provides a cuttable ribbon-shaped flexible solid-state battery, which includes a battery cell and a package 1 wrapped outside the battery cell; the cell comprises a plurality of solid-state battery cells 3, a filler 4, a first conductive path 2 and a second conductive path 5; the plurality of solid-state battery units 3 are transversely arranged side by side, a gap exists between any two adjacent solid-state battery units 3, and the filler 4 is filled in the gap between any two adjacent solid-state battery units 3; the solid-state battery unit 3 comprises a positive electrode and a negative electrode, the first conductive path 2 is connected with the positive electrodes of the solid-state battery units 3, the second conductive path 5 is connected with the negative electrodes of the solid-state battery units 3, and the solid-state battery units 3 are connected in parallel;
the solid-state battery unit 3 is made by stacking a negative electrode, a solid electrolyte layer 304, and a positive electrode in this order; the negative electrode includes a negative electrode current collector 307 and a negative electrode active layer 306; the positive electrode comprises a positive electrode current collector 301 and a positive electrode active layer 302, and the solid-state battery unit 3 structure further comprises a first buffer layer 303 between the positive electrode active layer 302 and the solid electrolyte layer 304, and a second buffer layer 305 between the negative electrode active layer 306 and the solid electrolyte layer 304;
the packaging part 1 is made of a packaging part upper layer 101 and a packaging part lower layer 102, the packaging part upper layer 101 is made of polyimide and is in contact with one side of the positive electrode of the solid-state battery unit 3, and the packaging part lower layer 102 is made of polyethylene and is in contact with one side of the negative electrode of the solid-state battery unit 3;
the thickness of the encapsulation part 1 is 1000 micrometers;
the first conductive path 2 and the second conductive path 5 are both made of a bendable conductive material; the bendable conductive material is a non-metal conductive material carbon cloth;
the distance between any two adjacent solid-state battery units is 1 cm;
the filler is a mixture of polyvinyl chloride and polymethyl methacrylate;
the ribbon-shaped flexible solid-state battery has a length of 0.5 m and an aspect ratio of 20: 1; the battery core comprises 15 solid-state battery units, and the capacity of each solid-state battery unit is 20 mAh.
Referring to fig. 1-8, fig. 3 is a diagram of one application of a ribbon-shaped flexible solid-state battery of the present invention; in practical application, the elongated flexible solid-state battery is cut along the filler 4 between the solid-state battery units 3 according to the production and use requirements, one end of the cut battery is selected, part of the filler 4 is removed, the first conductive path 2 is exposed to serve as a positive electrode interface of the battery, and the second conductive path 5 is exposed to serve as a negative electrode interface of the battery. In the flexible solid-state battery, a bent part is reserved at a gap between a first conductive path 2 and a second conductive path 5, and the bent part is straightened after cutting to be used as a positive electrode interface and a negative electrode interface. Protective layers 6 with good water and oxygen resistance are added at the notches at the two sides of the cut battery, so that the stability of the battery in the air is further improved; the filling material area of the battery obtained after cutting can be punched to form an open hole 7, and the shape of the hole can be circular, triangular, rectangular or other polygons without influencing the normal use of the battery; non-conductive cutters are used in the cutting process, so that short circuit of the battery is avoided.
Fig. 5 is a structural design diagram of a ribbon-shaped flexible solid-state battery according to the present invention; in the production process of the belt-shaped flexible solid-state battery, the gap between the solid-state battery units 3 can be adjusted as required, as shown in fig. 5, four solid-state battery units 3 are taken as a group, the gap width is increased at the pre-trimming filler area 402, the gap width is reduced at the non-trimming filler area 401, the pre-trimming filler area 402 with a larger gap width is selected for trimming, the redundancy of the trimming area is improved, and the energy density of the battery is not obviously reduced.
Fig. 6 is a diagram showing another structural design of the ribbon-shaped flexible solid-state battery according to the present invention; as shown in fig. 6, when the solid-state battery cells 3 themselves have a certain flexibility, the length of each solid-state battery cell 3 can be increased, increasing the energy density of the ribbon-shaped flexible solid-state battery.
Fig. 7 is a diagram of one use of the ribbon-shaped flexible solid-state battery of the present invention; as shown in fig. 7, the capacity of the cut batteries can be expanded by connecting a plurality of cut batteries in parallel through an external circuit.
Fig. 8 is a diagram of another use of the ribbon-shaped flexible solid-state battery according to the invention; as shown in fig. 8, a plurality of cut batteries can be connected in series through an external circuit to realize battery boosting.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A belt-shaped flexible solid-state battery capable of being cut is characterized by comprising a battery cell and a packaging part wrapped outside the battery cell; the battery core comprises a plurality of solid-state battery units, a filler, a first conductive path and a second conductive path; the plurality of solid-state battery units are transversely arranged side by side, a gap exists between any two adjacent solid-state battery units, and the filler is filled in the gap between any two adjacent solid-state battery units; the solid-state battery unit comprises a positive electrode and a negative electrode, the first conducting path is connected with the positive electrodes of the solid-state battery units, the second conducting path is connected with the negative electrodes of the solid-state battery units, and the solid-state battery units are connected in parallel.
2. The cuttable, band-shaped, flexible solid-state battery according to claim 1, wherein the packaging portion is made of a flexible, bendable material; preferably, the flexible bendable material is one or a mixture of two of a flexible polymer material and a flexible polymer metal composite material; preferably, the flexible and bendable material is one or a mixture of polyimide, polyethylene, polyvinyl chloride, polymethyl methacrylate, polyethylene naphthalate, polystyrene, polypropylene, polyamide and aluminum plastic film.
3. The cuttable ribbon-shaped flexible solid-state battery according to claim 1, wherein the package portion is made of a package portion upper layer and a package portion lower layer, and the package portion upper layer and the package portion lower layer are made of the same material or different materials.
4. The cuttable ribbon-shaped flexible solid-state battery according to claim 1, wherein the thickness of the packaging portion is 30 to 1000 μm; preferably, the thickness of the encapsulation part is 50-200 microns; preferably, the thickness of the encapsulation is 68 microns.
5. The cuttable ribbon-shaped flexible solid-state battery according to claim 1, wherein the first conductive path and the second conductive path are each made of a bendable conductive material; preferably, the bendable conductive material is one or a mixture of two of a metal conductive material and a non-metal conductive material; preferably, the metal conductive material is one of metal aluminum, metal nickel, metal copper, metal titanium and an alloy material containing at least one metal of aluminum, nickel, copper and titanium; the non-metal conductive material is one of carbon paper, carbon cloth, carbon fiber, carbon nano tube and graphene or a compound containing one or more of carbon paper, carbon cloth, carbon fiber, carbon nano tube and graphene.
6. The cuttable band-shaped flexible solid-state battery according to claim 1, wherein the first conductive path and the second conductive path have one of a linear shape, a band shape, a film shape, and a mesh shape.
7. The cuttable, band-shaped, flexible solid-state battery according to claim 1, wherein a distance between any two adjacent solid-state battery cells is 0.1 to 5 cm.
8. The cuttable, band-shaped, flexible solid-state battery according to claim 1, wherein the filler is an insulating material; preferably, the filler is a solid insulating material with certain deformation capacity or a liquid insulating material capable of solidifying under certain conditions; preferably, the filler is one or a mixture of polyimide, polyethylene, polyvinyl chloride, polymethyl methacrylate, polyethylene naphthalate, polystyrene, polypropylene and polyamide.
9. The trimmable, band-shaped, flexible solid-state battery of claim 1, wherein the first conductive path is an aluminum band having a width of 0.1-2cm, and the second conductive path is a nickel band having a width of 0.1-2 cm.
10. The trimmable tape-shaped flexible solid-state battery according to any one of claims 1 to 9, wherein the tape-shaped flexible solid-state battery has a length of 0.05 to 100m and an aspect ratio of 1.5 to 5000: 1; the battery core comprises 2-2000 solid-state battery units, and the capacity of each solid-state battery unit is 1-200 mAh; preferably, the ribbon-shaped flexible solid-state battery has a length of 15 meters and an aspect ratio of 600: 1; the battery core comprises 500 solid-state battery units, and the capacity of each solid-state battery unit is 20 mAh.
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| CN202111454863.2A CN114256500B (en) | 2021-12-01 | 2021-12-01 | Strip-shaped flexible solid-state battery capable of being cut |
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| CN202111454863.2A CN114256500B (en) | 2021-12-01 | 2021-12-01 | Strip-shaped flexible solid-state battery capable of being cut |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018181853A (en) * | 2018-06-28 | 2018-11-15 | リンテック株式会社 | Sticky sheet for battery, and lithium ion battery |
| CN110299566A (en) * | 2019-06-27 | 2019-10-01 | 江苏博煦电池科技有限公司 | A kind of bendable battery |
| CN111446486A (en) * | 2020-04-15 | 2020-07-24 | 廖湘标 | Flexible battery |
| CN111653817A (en) * | 2020-06-16 | 2020-09-11 | 深圳信达新能源科技有限公司 | Preparation method of flexible battery pack and prepared flexible battery pack |
| WO2022183374A1 (en) * | 2021-03-02 | 2022-09-09 | 宁德新能源科技有限公司 | Flexible battery and method for manufacturing same |
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2021
- 2021-12-01 CN CN202111454863.2A patent/CN114256500B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018181853A (en) * | 2018-06-28 | 2018-11-15 | リンテック株式会社 | Sticky sheet for battery, and lithium ion battery |
| CN110299566A (en) * | 2019-06-27 | 2019-10-01 | 江苏博煦电池科技有限公司 | A kind of bendable battery |
| CN111446486A (en) * | 2020-04-15 | 2020-07-24 | 廖湘标 | Flexible battery |
| CN111653817A (en) * | 2020-06-16 | 2020-09-11 | 深圳信达新能源科技有限公司 | Preparation method of flexible battery pack and prepared flexible battery pack |
| WO2022183374A1 (en) * | 2021-03-02 | 2022-09-09 | 宁德新能源科技有限公司 | Flexible battery and method for manufacturing same |
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| CN114256500B (en) | 2024-03-15 |
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