CN116981274A - Battery and preparation method thereof - Google Patents

Battery and preparation method thereof Download PDF

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Publication number
CN116981274A
CN116981274A CN202311103681.XA CN202311103681A CN116981274A CN 116981274 A CN116981274 A CN 116981274A CN 202311103681 A CN202311103681 A CN 202311103681A CN 116981274 A CN116981274 A CN 116981274A
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electrode
adjacent
insulating layer
electrodes
material layer
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邢汝博
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Yungu Guan Technology Co Ltd
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Yungu Guan Technology Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K39/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic radiation-sensitive element covered by group H10K30/00
    • H10K39/10—Organic photovoltaic [PV] modules; Arrays of single organic PV cells
    • H10K39/18—Interconnections, e.g. terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0224—Electrodes
    • H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/0475—PV cell arrays made by cells in a planar, e.g. repetitive, configuration on a single semiconductor substrate; PV cell microarrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/50—Photovoltaic [PV] devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/80—Constructional details
    • H10K30/81—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K39/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic radiation-sensitive element covered by group H10K30/00
    • H10K39/10—Organic photovoltaic [PV] modules; Arrays of single organic PV cells
    • H10K39/12—Electrical configurations of PV cells, e.g. series connections or parallel connections
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/60—Forming conductive regions or layers, e.g. electrodes

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  • General Physics & Mathematics (AREA)
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  • Connection Of Batteries Or Terminals (AREA)

Abstract

The embodiment of the application provides a battery and a preparation method of the battery. The battery includes: a substrate; the device unit is arranged on one side of the substrate and comprises a first electrode, a second electrode positioned on one side of the first electrode, which is away from the substrate, and functional units positioned between the first electrode and the second electrode, wherein the device unit is provided with a first end and a second end, the number of the device units is at least two, between two adjacent device units, the first end of one device unit and the second end of the other device unit are arranged in opposite directions, a first isolation groove is formed between the adjacent first electrodes, and a second isolation groove is formed between the adjacent functional units and between the adjacent second electrodes; and a connection electrode at least partially located in the second isolation groove and connecting the first electrode of one of the adjacent device units with the second electrode of the other. The battery and the preparation method of the battery can improve the working reliability and the production yield of the battery.

Description

Battery and preparation method thereof
Technical Field
The application belongs to the technical field of batteries, and particularly relates to a battery and a preparation method of the battery.
Background
The battery is a small device capable of generating electric energy, and along with popularization of the energy conservation and emission reduction concepts, the field of using the electric energy of the battery as driving energy is more and more, so that the battery plays a great role in various aspects of modern social life.
But the operational reliability and production yield of the current batteries are still to be improved.
Disclosure of Invention
The embodiment of the application provides a battery and a preparation method of the battery, aiming at improving the working reliability and the production yield of the battery.
An embodiment of a first aspect of the present application provides a battery comprising: a substrate; the device unit is arranged on one side of the substrate and comprises a first electrode, a second electrode positioned on one side of the first electrode, which is away from the substrate, and functional units positioned between the first electrode and the second electrode, wherein the device unit is provided with a first end and a second end, the number of the device units is at least two, between two adjacent device units, the first end of one device unit and the second end of the other device unit are arranged in opposite directions, a first isolation groove is formed between the adjacent first electrodes, and a second isolation groove is formed between the adjacent functional units and between the adjacent second electrodes; and a connection electrode at least partially located in the second isolation groove and connecting the first electrode of one of the adjacent device units with the second electrode of the other.
According to an embodiment of the first aspect of the present application, the first and second partition grooves communicate with each other, and the battery further includes a first insulating layer between at least the first electrode at the first end and the connection electrode.
According to any of the foregoing embodiments of the first aspect of the present application, the functional unit located at the first end and the connection electrode are also provided with a first insulating layer.
According to any one of the preceding embodiments of the first aspect of the present application, the first insulating layer includes a first segment, and in the adjacent device units, the first segment is disposed to cover a surface of the first end toward the second end side.
According to any of the foregoing embodiments of the first aspect of the present application, the first insulating layer further includes a second segment connected to the first segment, the second segment being disposed to cover a surface of the second electrode at the first end facing away from the substrate in an adjacent device unit.
According to any of the foregoing embodiments of the first aspect of the application, at least a portion of the connecting electrode is located on a side of the first segment and the second segment facing away from the first end.
According to any of the foregoing embodiments of the first aspect of the present application, in the adjacent device units, at least part of the connection electrode is located on a side of the second segment facing away from the substrate and overlaps the second electrode located at the first end.
According to any of the preceding embodiments of the first aspect of the present application, in adjacent device units, the surface of the first partition wall inner wall is coplanar with the surface of at least part of the second partition wall inner wall.
According to any one of the foregoing embodiments of the first aspect of the present application, in the adjacent device units, a surface of the first electrode on the side facing the first isolation groove at the first end is coplanar with a surface of the functional unit on the side facing the second isolation groove at the first end.
According to any one of the foregoing embodiments of the first aspect of the present application, the material of the first insulating layer includes at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride, and polymer-doped silicon oxide fine powder.
According to any one of the preceding embodiments of the first aspect of the present application, the material of the first insulating layer includes at least one of a thermoplastic polymer material and a thermosetting polymer material.
According to any one of the foregoing embodiments of the first aspect of the present application, the material of the first insulating layer includes at least one of a polyacrylic resin, a polyimide resin, and an epoxy resin.
According to any of the foregoing embodiments of the first aspect of the present application, the first insulating layer includes a third segment that is provided to cover the functional unit located at the second end and the surface of the second electrode on the side toward the first end in the adjacent device units.
According to any of the foregoing embodiments of the first aspect of the present application, the first insulating layer further includes a fourth segment connected to the third segment, the fourth segment being disposed to cover a surface of the second electrode at the second end facing away from the substrate in an adjacent device unit.
According to any of the foregoing embodiments of the first aspect of the present application, the orthographic projection of the first isolation groove on the substrate is offset from the orthographic projection of the second isolation groove on the substrate, and at least a portion of the functional units are located in the first isolation groove.
According to any of the foregoing embodiments of the first aspect of the present application, in the adjacent device units, the first electrode at the second end overlaps the functional unit at the first end.
According to any one of the foregoing embodiments of the first aspect of the present application, in the adjacent device units, a second insulating layer is provided between the functional unit located at the first end and the connection electrode.
According to any of the foregoing embodiments of the first aspect of the present application, the second insulating layer includes a fifth segment that is disposed to cover a surface of the first end toward the second end side in the adjacent device unit.
According to any of the foregoing embodiments of the first aspect of the present application, the second insulating layer further includes a sixth segment connected to the fifth segment, and in the adjacent device unit, the sixth segment is disposed so as to cover a surface of the second electrode located at the first end, which surface is away from the substrate.
According to any of the foregoing embodiments of the first aspect of the application, at least a portion of the connecting electrode is located on a side of the fifth segment and the sixth segment facing away from the first end.
According to any of the foregoing embodiments of the first aspect of the application, in adjacent device units at least part of the connection electrode is located on a side of the sixth segment facing away from the substrate and overlaps with the second electrode located at the first end.
According to any one of the foregoing embodiments of the first aspect of the present application, the material of the second insulating layer includes at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride, and polymer-doped silicon oxide fine powder.
According to any one of the foregoing embodiments of the first aspect of the present application, the material of the second insulating layer includes at least one of a thermoplastic polymer material and a thermosetting polymer material.
According to any one of the foregoing embodiments of the first aspect of the present application, the material of the second insulating layer includes at least one of a polyacrylic resin, a polyimide resin, and an epoxy resin.
According to any one of the foregoing embodiments of the first aspect of the present application, the second insulating layer includes a seventh segment that is provided to cover the functional unit located at the second end and the surface of the second electrode on the side toward the first end in the adjacent device unit.
According to any of the foregoing embodiments of the first aspect of the present application, the second insulating layer further includes an eighth segment connected to the seventh segment, the eighth segment being disposed to cover a surface of the second electrode at the second end facing away from the substrate in an adjacent device unit.
According to any one of the foregoing embodiments of the first aspect of the present application, the functional unit includes a first carrier transport layer, a second carrier transport layer located on a side of the first carrier transport layer facing away from the substrate, and a photoactive layer located between the first carrier transport layer and the second carrier transport layer.
According to any of the foregoing embodiments of the first aspect of the present application, the cross-sectional areas of the functional units and the second electrode gradually decrease in a direction away from the substrate, and/or the cross-sectional area of the first electrode gradually decreases.
The embodiment of the second aspect of the application also provides a preparation method of the battery, which comprises the following steps:
sequentially forming a first electrode material layer, a functional unit material layer and a second electrode material layer on a substrate;
etching the functional unit material layer and the second electrode material layer to form a plurality of functional units and second electrodes which are arranged at intervals, wherein second isolation grooves are formed between adjacent functional units and between adjacent second electrodes;
etching the first electrode material layer to form a plurality of first electrodes which are arranged at intervals, wherein a first separation groove is formed between every two adjacent first electrodes, the first electrodes, a second electrode which is positioned at one side of the first electrodes, which is away from the substrate, and functional units which are positioned between the first electrodes and the second electrodes are combined to form device units, each device unit is provided with a first end and a second end, the number of the device units is at least two, and the first end of one device unit and the second end of the other device unit are oppositely arranged between every two adjacent device units;
Forming a first insulating layer on a side surface of the first electrode located at the first end toward the second end;
a connection electrode is formed on a surface of the device unit and a side surface of the first insulating layer facing away from the first end, at least a portion of the connection electrode being located in the second isolation groove and connecting the first electrode of one of the adjacent device units and the second electrode of the other.
According to an embodiment of the second aspect of the present application, the step of sequentially forming the first electrode material layer, the functional unit material layer, and the second electrode material layer on the substrate further includes:
sequentially forming a first electrode material layer, a functional unit material layer, a second electrode material layer and a first insulating material layer on a substrate, wherein the material of the first insulating material layer comprises at least one of thermoplastic polymer materials and thermosetting polymer materials;
the step of forming a first insulating layer on a surface of the first electrode at the first end facing the second end further includes:
the first insulating material layer at the first end is heated so that at least a portion of the first insulating material layer flows through the second isolation groove and the first isolation groove to form a first insulating layer.
According to a second aspect of the present application, in the adjacent device units, the surface of the first partition wall inner wall is coplanar with the surface of at least a part of the second partition wall inner wall.
According to any one of the foregoing embodiments of the second aspect of the present application, in the adjacent device units, a surface of the first electrode on the side facing the first isolation groove at the first end is coplanar with a surface of the functional unit on the side facing the second isolation groove at the first end.
According to any one of the foregoing embodiments of the second aspect of the present application, the material of the first insulating layer includes at least one of a polyacrylic resin, a polyimide resin, and an epoxy resin.
According to any one of the foregoing embodiments of the second aspect of the present application, in the step of performing etching treatment on the functional unit material layer and the second electrode material layer to form a plurality of functional units and second electrodes disposed at intervals, a second isolation groove is provided between adjacent functional units and between adjacent second electrodes, the method further includes:
etching is carried out on the first insulating material layer to form a plurality of first insulating materials which are arranged at intervals, and second isolation grooves are formed among adjacent functional units, between adjacent second electrodes and between adjacent first insulating materials.
The embodiment of the second aspect of the application also provides a preparation method of the battery, which comprises the following steps:
forming a first electrode material layer on a substrate;
etching the first electrode material layer to form a plurality of first electrodes arranged at intervals, wherein first isolation grooves are formed between adjacent first electrodes;
Sequentially forming a functional unit material layer and a second electrode material layer on the first electrode, wherein at least part of the functional unit material layer is positioned in the first isolation groove;
etching the functional unit material layer and the second electrode material layer to form a plurality of functional units and second electrodes which are arranged at intervals, wherein at least part of the functional units are positioned in a first separation groove, second separation grooves are formed between adjacent functional units and between adjacent second electrodes, orthographic projections of the first separation grooves on the substrate are staggered with orthographic projections of the second separation grooves on the substrate, the first electrodes, the second electrodes positioned on one side of the first electrodes, which are away from the substrate, and the functional units positioned between the first electrodes and the second electrodes are combined to form device units, each device unit is provided with a first end and a second end, the number of the device units is at least two, and the first ends of one of the device units and the second ends of the other device units are arranged in opposite directions between the two adjacent device units;
a connection electrode is formed, at least a portion of which is located in the second isolation groove and connects the first electrode of one of the adjacent device units with the second electrode of the other.
According to an embodiment of the second aspect of the application, in adjacent device units, the first electrode at the second end overlaps the functional unit at the first end.
According to any one of the foregoing embodiments of the second aspect of the present application, in the step of forming the connection electrode, at least a portion of the connection electrode is located in the second isolation groove and connects the first electrode of one of the adjacent device units and the second electrode of the other one of the adjacent device units, further comprising:
a second insulating layer is formed on a side surface of the functional unit located at the first end toward the second end, and a connection electrode is formed on a surface of the device unit and a side surface of the second insulating layer facing away from the first end.
According to any one of the foregoing embodiments of the second aspect of the present application, the step of sequentially forming the functional unit material layer and the second electrode material layer on the first electrode, at least part of the functional unit material layer being located in the first isolation groove further includes:
sequentially forming a functional unit material layer, a second electrode material layer and a second insulating material layer on the first electrode, wherein the material of the second insulating material layer comprises at least one of a thermoplastic polymer material and a thermosetting polymer material;
forming a second insulating layer on a side surface of the functional unit located at the first end facing the second end, and forming a connection electrode on a surface of the device unit and a side surface of the second insulating layer facing away from the first end, the step of forming a connection electrode further including:
The second insulating material layer at the first end is heated such that at least a portion of the second insulating material layer flows through the second isolation trench and the first isolation trench to form a second insulating layer.
According to any one of the foregoing embodiments of the second aspect of the present application, the material of the second insulating layer includes at least one of a polyacrylic resin, a polyimide resin, and an epoxy resin.
In the battery provided by the embodiment of the application, the battery comprises a substrate, device units and connecting electrodes, wherein the device units are arranged on one side of the substrate, each device unit comprises a first electrode, a second electrode arranged on one side of the first electrode, which is away from the substrate, and functional units arranged between the first electrode and the second electrode, the number of the device units is at least two, and the connecting electrodes are arranged to connect the first electrode of one of the adjacent device units and the second electrode of the other device unit, so that the two adjacent device units can be connected in series through the connecting electrodes, thereby effectively reducing the current transmission path of the battery, improving the output voltage of the battery and reducing the boosting loss of the electric energy output of the battery.
In addition, the connecting electrode can be prepared independently of the device unit, namely the device unit can be prepared first and then the connecting electrode can be prepared, so that between adjacent device units, only a first isolation groove can be arranged between adjacent first electrodes, and only a second isolation groove can be arranged between adjacent functional units and between adjacent second electrodes, so that adjacent device units are separated, and when the device unit is manufactured, the first isolation groove and the second isolation groove can be formed only by carrying out an etching process on the material of the device unit for at most two times, so that the material of the device unit can be separated into a plurality of device units. Therefore, the less times of etching process can reduce the risk of pollution, so that each film layer in the device unit is not easy to damage, and the working reliability and the production yield of the battery are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a partial cross-sectional view of a battery provided in an embodiment of the present application;
fig. 2 is a partial cross-sectional view of a battery provided in another embodiment of the present application;
fig. 3 is a partial cross-sectional view of a battery provided in accordance with yet another embodiment of the present application;
fig. 4 is a partial cross-sectional view of a battery provided in accordance with yet another embodiment of the present application;
fig. 5 is a partial cross-sectional view of a battery provided in accordance with yet another embodiment of the present application;
fig. 6 is a partial cross-sectional view of a battery provided in accordance with yet another embodiment of the present application;
fig. 7 is a schematic flow chart of a preparation method of a battery according to an embodiment of the present application;
fig. 8 to 12 are schematic views of a process of a method for manufacturing a battery according to an embodiment of the present application;
fig. 13 is a schematic flow chart of a method for manufacturing a battery according to another embodiment of the present application;
Fig. 14 to 19 are schematic views illustrating a process of a method for manufacturing a battery according to another embodiment of the present application.
Reference numerals illustrate:
10. a battery; 10a, a first electrode material layer; 10b, a functional unit material layer; 10c, a second electrode material layer; 10d, a first insulating material layer; 10e, a first insulating material; 10f, a second insulating material layer; 10g of a second insulating material;
100. a substrate;
200. a device unit; 200a, a first end; 200b, a second end; 200c, a first isolation groove; 200d, a second isolation groove; 210. a first electrode; 220. a functional unit; 230. a second electrode;
300. connecting the electrodes;
400. a first insulating layer; 410. a first segment; 420. a second segment; 430. a third segment; 440. a fourth segment;
500. a second insulating layer; 510. a fifth segment; 520. a sixth segment; 530. a seventh segment; 540. eighth segment.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the application and are not configured to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.
The battery is a small device capable of generating electric energy, and along with popularization of the energy conservation and emission reduction concepts, the field of using the electric energy of the battery as driving energy is more and more, so that the battery plays a great role in various aspects of modern social life. In the process of implementing the present application, the inventor finds that there is a problem in the related art that, in the existing battery production and manufacturing process, for example, in the manufacturing process of a photovoltaic cell, patterning processing of etching is often required to be performed on the battery material for multiple times (for example, three to four times), however, multiple etching processes tend to increase risks of damaging or polluting each film layer in the device unit, for example, when a laser etching process is used, a film layer deposition process is often performed after each laser etching process is performed, but particles are easy to be generated after the laser etching process, and the particles are easy to cover the surface of the material to cause pollution, so that, when the film layer deposition process is performed after the laser etching process, the film layer formed on the surface of the material is easy to be influenced by the particles on the surface of the material to generate damage, so that the working reliability and the production yield of the battery are easy to be reduced.
In order to solve the above problems, embodiments of the present application provide a battery and a method for manufacturing a battery, and various embodiments of the battery and the method for manufacturing a battery will be described below with reference to the accompanying drawings.
Fig. 1 is a partial cross-sectional view of a battery 10 provided in an embodiment of the present application.
As shown in fig. 1, an embodiment of a first aspect of the present application provides a battery 10 including: a substrate 100; the device unit 200 is disposed on one side of the substrate 100, the device unit 200 includes a first electrode 210, a second electrode 230 disposed on a side of the first electrode 210 away from the substrate 100, and a functional unit 220 disposed between the first electrode 210 and the second electrode 230, the device unit 200 has a first end 200a and a second end 200b, the number of the device units 200 is at least two, between two adjacent device units 200, the first end 200a of one of the two device units is opposite to the second end 200b of the other device unit, a first isolation groove 200c is disposed between the adjacent first electrodes 210, and a second isolation groove 200d is disposed between the adjacent functional units 220 and between the adjacent second electrodes 230; and connection electrodes 300, at least part of which connection electrodes 300 are positioned in the second isolation grooves 200d and connect the first electrode 210 of one of the adjacent device units 200 with the second electrode 230 of the other.
In the battery 10 provided by the embodiment of the application, the battery 10 includes the substrate 100, the device units 200 and the connection electrode 300, the device units 200 are disposed on one side of the substrate 100, the device units 200 include the first electrode 210, the second electrode 230 disposed on one side of the first electrode 210 away from the substrate 100, and the functional units 220 disposed between the first electrode 210 and the second electrode 230, the number of the device units 200 is plural, and the connection electrode 300 is provided to connect the first electrode 210 of one of the adjacent device units 200 with the second electrode 230 of the other device unit, so that the two adjacent device units 200 can be connected in series through the connection electrode 300, thereby effectively reducing the current transmission path of the battery 10, improving the output voltage of the battery 10, and reducing the boost loss of the electric energy output of the battery 10.
Alternatively, between two adjacent device units 200, the connection electrode 300 may be connected to the second electrode 230 at the first end 200a in one of the device units 200 and to the first electrode 210 at the second end 200b in the other device unit 200, thereby achieving the series connection between the two adjacent device units 200.
In addition, since the connection electrode 300 may be prepared independently of the device unit 200, that is, the device unit 200 may be prepared first and then the connection electrode 300 may be prepared, and therefore, between adjacent device units 200, only the first partition groove 200c may be provided between adjacent first electrodes 210, and only the second partition groove 200d may be provided between adjacent functional units 220 and between adjacent second electrodes 230, thereby partitioning the adjacent device units 200, so that when the device unit 200 is manufactured, only the material of the device unit 200 may be subjected to the etching process at most two times to form the first partition groove 200c and the second partition groove 200d, and thus, the material of the device unit 200 may be partitioned into the plurality of device units 200. Therefore, the fewer times of etching process can reduce the risk of contamination, so that each film layer in the device unit 200 is not easily damaged, thereby improving the operational reliability and the production yield of the battery 10.
The kind of the battery 10 is not particularly limited in the present application, and alternatively, the battery 10 may be a photovoltaic cell, that is, the battery 10 may be used to directly convert light energy into electric energy, for example, the battery 10 may be used to directly convert solar light energy into electric energy.
Alternatively, the battery 10 may be a perovskite photovoltaic cell, so that the battery 10 can be suitable for a large-area layout working condition, and the battery 10 has the characteristics of low cost, high photoelectric conversion efficiency and the like.
Optionally, the functional unit 220 may include a first carrier transport layer, a second carrier transport layer located on a side of the first carrier transport layer away from the substrate 100, and a photoactive layer located between the first carrier transport layer and the second carrier transport layer, so that the battery 10 can convert light energy into electrical energy, and the electrical energy formed by the conversion can be conducted with other device units 200 or external electrical equipment through the first electrode 210 and the second electrode 230.
In the embodiment of the present application, when the device unit 200 is manufactured, the etching process performed on the material of the device unit 200 may refer to any kind of etching process that is easy to damage or pollute the film layer of the device unit 200.
Alternatively, the etching process performed on the material of the device unit 200 may be a laser etching process, that is, in the embodiment of the present application, the laser etching process with fewer times can reduce the risk of generating particulate pollution, so that each film layer in the device unit 200 is not easily damaged by particulates, thereby improving the operational reliability and the production yield of the battery 10. For convenience of description, the following embodiments will take "an etching process performed on a material of the device unit 200 is a laser etching process" as an example.
In embodiments of the present application, there are various methods for preparing the connection electrode 300, and in some embodiments, the connection electrode 300 may be prepared by printing, alternatively, the connection electrode 300 may be prepared by printing conductive paste, for example, the connection electrode 300 may be prepared by printing silver paste, copper paste, carbon paste, conductive graphene, carbon nanotube, or the like. In some embodiments, the connection electrode 300 may also be prepared by printing, alternatively, the connection electrode 300 may be prepared by printing conductive paste, for example, the connection electrode 300 may be prepared by printing nano silver ink, conductive polymer ink, conductive carbon nanotube ink, or the like. In some embodiments, the connection electrode 300 may also be prepared by vapor deposition, alternatively, the connection electrode 300 may be prepared by vapor deposition of a metal material through a Mask (Mask), for example, the connection electrode 300 may be prepared by vapor deposition of silver, copper, gold, a conductive oxide material (e.g., indium tin oxide, indium zinc oxide, etc.), or the like.
In some embodiments, in the adjacent device units 200, the surface of the inner wall of the first isolation groove 200c may be coplanar with the surface of the inner wall of at least part of the second isolation groove 200d, that is, between the adjacent device units 200, the surface of the first electrode 210 located at the first end 200a facing the first isolation groove 200c is coplanar with the surface of the functional unit 220 located at the first end 200a facing the second isolation groove 200d, and/or the surface of the first electrode 210 located at the second end 200b facing the first isolation groove 200c is coplanar with the surface of the functional unit 220 located at the second end 200b facing the second isolation groove 200d, so that when the device unit 200 is manufactured, the first isolation groove 200c and the second isolation groove 200d may be formed at the same time by performing the laser etching process on the material of the device unit 200 only once, so that the material of the device unit 200 may be separated into a plurality of device units 200, thereby greatly improving the manufacturing efficiency of the battery 10, and further reducing the number of times of the laser etching processes, so that each membrane layer in the device unit 200 is liable to be damaged, and further improving the reliability of the battery 10.
In other embodiments, in the adjacent device units 200, at least a portion of the surface of the inner wall of the first isolation groove 200c may not be coplanar with the surface of the inner wall of the second isolation groove 200d, i.e., when the device unit 200 is manufactured, two laser etching processes are required to be performed on the material of the device unit 200 to form the first isolation groove 200c and the second isolation groove 200d, respectively.
Optionally, the orthographic projection area of the first isolation groove 200c on the substrate 100 may be smaller than the orthographic projection area of the second isolation groove 200d on the substrate 100, so that the first electrode 210 surrounding at least one side forming the first isolation groove 200c may be protruded to be disposed with the functional unit 220 and the second electrode 230, thereby improving the area of the first electrode 210 available for connection with the connection electrode 300, so as to facilitate connection between the connection electrode 300 and the first electrode 210, reducing the resistance between the connection electrode 300 and the first electrode 210, and improving the current conduction efficiency between adjacent device units 200.
For convenience of description, the following embodiments will be described by taking an example of "at least a part of the surface of the inner wall of the first partition groove 200c is not disposed coplanar with the surface of the inner wall of the second partition groove 200 d".
Fig. 2 is a partial cross-sectional view of a battery 10 according to another embodiment of the present application.
As shown in fig. 2, in some alternative embodiments, the cross-sectional area between the functional units 220 and the second electrode 230 gradually decreases, and/or the cross-sectional area of the first electrode 210 gradually decreases, in a direction away from the substrate 100.
For example, in a direction away from the substrate 100, a surface enclosing the first partition groove 200c is disposed obliquely toward a side facing away from the first partition groove 200c, and/or a surface enclosing the second partition groove 200d is disposed obliquely toward a side facing away from the second partition groove 200 d.
The shape of the surface forming the first partition groove 200c is enclosed by reasonable arrangement, and the shape of the surface forming the second partition groove 200d is enclosed by reasonable arrangement, namely, the shapes of the inner walls of the first partition groove 200c and the second partition groove 200d are reasonably arranged, so that the processing of the first partition groove 200c and the second partition groove 200d can be facilitated, and the attachment of materials such as the connection electrode 300 can be facilitated, so that the materials attached to the inner walls of the first partition groove 200c and the second partition groove 200d are not easy to break.
In the present application, there are various positional relationships between the first partition groove 200c and the second partition groove 200 d.
In some alternative embodiments, as shown in fig. 2, the orthographic projection of the first isolation trench 200c on the substrate 100 may be located within the orthographic projection of the second isolation trench 200d on the substrate 100, so that after the respective film materials of the device unit 200 are formed on the substrate 100, the preparation of the first isolation trench 200c and the second isolation trench 200d is performed, so that the respective film layers in the device unit 200 are not easily damaged by the particles generated by the laser etching process.
Optionally, the first isolation groove 200c and the second isolation groove 200d are in communication with each other, and the battery 10 further includes the first insulating layer 400 at least between the first electrode 210 at the first end 200a and the connection electrode 300, so that insulation between the connection electrode 300 and the first electrode 210 at the first end 200a can be achieved through the first insulating layer 400, and a possibility of short-circuiting connection between the second electrode 230 of the single device unit 200 and the first electrode 210 through the connection electrode 300 is reduced.
Alternatively, at least a portion of the first insulating layer 400 may be located within the first partition groove 200c, so that insulation between adjacent first electrodes 210 can also be achieved by the first insulating layer 400 in adjacent two device units 200.
Optionally, a first insulating layer 400 is also disposed between the functional unit 220 located at the first end 200a and the connection electrode 300, that is, at least a portion of the first insulating layer 400 may also be disposed in the second isolation groove 200d, so that insulation between the connection electrode 300 and the functional unit 220 located at the first end 200a may be achieved through the first insulating layer 400, and thus the functional unit 220 is not easy to affect the connection electrode 300 when the device unit 200 works.
Optionally, the first insulating layer 400 includes a first segment 410, and in the adjacent device units 200, the first segment 410 is disposed to cover a surface of the first end 200a facing the first end 200a side.
Optionally, the first insulating layer 400 further includes a second segment 420 connected to the first segment 410, and in the adjacent device unit 200, the second segment 420 is disposed to cover a surface of the second electrode 230 at the first end 200a facing away from the substrate 100.
The first segment 410 and the second segment 420 of the first insulating layer 400 can effectively cover the first end 200a of the device unit 200, so that the first end 200a of the device unit 200 is not easy to contact with the second end 200b of the adjacent device unit 200, and the first insulating layer 400 can effectively limit excessive contact between the connection electrode 300 and the first end 200a, so that short circuit connection is not easy to occur between the first electrode 210 and the second electrode 230 in the single device unit 200.
Optionally, in the adjacent device units 200, at least part of the connection electrode 300 is located on a side of the second section 420 away from the substrate 100 and overlaps the second electrode 230 located at the first end 200a, that is, at least part of the connection electrode 300 may overlap a surface of a side of the second electrode 230 away from the substrate 100, so that a sufficient connectable area between the connection electrode 300 and the second electrode 230 can be provided, and connection stability between the connection electrode 300 and the second electrode 230 is improved.
Optionally, at least part of the connection electrode 300 is located on a side of the first and second sections 410, 420 facing away from the first end 200a, such that the connection electrode 300 is connected to the first electrode 210 of one of the two adjacent device units 200 and the second electrode 230 of the other.
The material of the first insulating layer 400 is not particularly limited in the present application, and the material of the first insulating layer 400 may include an insulating material. Optionally, the material of the first insulating layer 400 includes at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride and polymer doped silicon oxide micro powder, so that the first insulating layer 400 can be prepared by printing, printing or vapor deposition.
Alternatively, the material of the first insulating layer 400 may include at least one of a thermoplastic polymer material and a thermosetting polymer material, for example, the material of the first insulating layer 400 may include at least one of a polyacrylic resin, a polyimide resin, and an epoxy resin.
By providing the material of the first insulating layer 400 including at least one of a thermoplastic polymer material and a thermosetting polymer material, the thermoplastic polymer material or the thermosetting polymer material may be provided over the device unit 200 and heated, so that the material may have better fluidity to flow into the first partition groove 200c and/or the second partition groove 200d, and then be cured to form the first insulating layer 400, thereby improving the convenience of manufacturing the first insulating layer 400.
Fig. 3 is a partial cross-sectional view of a battery 10 according to still another embodiment of the present application.
As shown in fig. 3, optionally, in the adjacent device units 200, the surface of the first electrode 210 located at the first end 200a facing the first isolation groove 200c is coplanar with the surface of the functional unit 220 located at the first end 200a facing the second isolation groove 200d, so that when the first insulating layer 400 or the connection electrode 300 is prepared, the material of the first insulating layer 400 or the connection electrode 300 can well fall into the first isolation groove 200c along the inner wall of the second isolation groove 200d, thereby reducing the preparation difficulty of the battery 10.
Alternatively, before the first isolation groove 200c and the second isolation groove 200d are formed, a thermoplastic polymer material or a thermosetting polymer material may be disposed on a side of the material of the device unit 200 facing away from the substrate 100, and then the thermoplastic polymer material or the thermosetting polymer material and the material of the device unit 200 are subjected to an etching process to form the first isolation groove 200c and the second isolation groove 200d, wherein the thermoplastic polymer material or the thermosetting polymer material remaining after the etching process may be disposed on both sides of the second isolation groove 200d, and the thermoplastic polymer material or the thermosetting polymer material remaining after the etching process may be disposed on a side of the second isolation groove 200d facing the first end 200a and a side facing the second end 200 b.
Alternatively, as shown in fig. 3, the first insulating layer 400 includes a third segment 430, and in the adjacent device units 200, the third segment 430 is disposed to cover the functional unit 220 located at the second end 200b and the surface of the second electrode 230 facing the first end 200a side.
Optionally, the first insulating layer 400 further includes a fourth segment 440 connected to the third segment 430, and in the adjacent device unit 200, the fourth segment 440 is disposed to cover the surface of the second electrode 230 at the second end 200b facing away from the substrate 100.
The third segment 430 and the fourth segment 440 may be made of a thermoplastic polymer material or a thermosetting polymer material located on the side of the second partition groove 200d facing the second end 200b, that is, when the first insulating layer 400 is manufactured, the thermoplastic polymer material or the thermosetting polymer material located on the side of the second partition groove 200d facing the second end 200b above the device unit 200 may be heated, so that the material may have better fluidity to flow into the first partition groove 200c and/or the second partition groove 200d, and then be cured to form the third segment 430 and the fourth segment 440 of the first insulating layer 400.
Fig. 4 is a partial cross-sectional view of a battery 10 according to still another embodiment of the present application.
In alternative embodiments, as shown in fig. 4, the orthographic projection of the first isolation trench 200c on the substrate 100 may be offset from the orthographic projection of the second isolation trench 200d on the substrate 100, and at least a portion of the functional units 220 are located in the first isolation trench 200c, so that, in two adjacent device units 200, the adjacent first electrodes 210 can be insulated by the functional units 220 located in the first isolation trench 200 c.
In this embodiment, after a plurality of first electrodes 210 and first isolation grooves 200c are etched from the material of the first electrode 210, a material of each film layer is formed on the first electrode 210, and then an etching process is performed to form a second isolation groove 200d and a plurality of functional units 220 and second electrodes 230.
Optionally, in the adjacent device units 200, the first electrode 210 located at the second end 200b is overlapped with the functional unit 220 located at the first end 200a, so that the first electrode 210 has a sufficient area to be connected with the connection electrode 300, thereby improving connection reliability when the connection electrode 300 is connected with the first electrode 210, reducing resistance between the connection electrode 300 and the first electrode 210, and improving current conduction efficiency between the adjacent device units 200.
Fig. 5 is a partial cross-sectional view of a battery 10 according to still another embodiment of the present application.
As shown in fig. 5, optionally, in the adjacent device units 200, a second insulating layer 500 is disposed between the functional units 220 located at the first ends 200a and the connection electrodes 300, so that insulation between the connection electrodes 300 and the functional units 220 located at the first ends 200a can be achieved through the second insulating layer 500, so that the functional units 220 are not easy to affect the connection electrodes 300 when the device units 200 operate, and further, the connection electrodes 300 are not easy to make contact with the first electrodes 210 located at the first ends 200 a.
Optionally, the second insulating layer 500 includes a fifth segment 510, and in the adjacent device unit 200, the fifth segment 510 is disposed to cover a surface of the first end 200a facing the second end 200 b.
Optionally, the second insulating layer 500 further includes a sixth segment 520 connected to the fifth segment 510, and in the adjacent device unit 200, the sixth segment 520 is disposed to cover the surface of the second electrode 230 at the first end 200a facing away from the substrate 100.
The fifth segment 510 and the sixth segment 520 of the second insulating layer 500 can effectively cover the first end 200a of the device unit 200, so that the first end 200a of the device unit 200 is not easy to contact with the second end 200b of the adjacent device unit 200, and the second insulating layer 500 can effectively limit excessive contact between the connection electrode 300 and the first end 200a, so that short circuit connection is not easy to occur between the first electrode 210 and the second electrode 230 in the single device unit 200.
Optionally, in the adjacent device units 200, at least part of the connection electrode 300 is located on a side of the sixth segment 520 facing away from the substrate 100 and overlaps the second electrode 230 located at the first end 200a, that is, at least part of the connection electrode 300 may overlap a surface of a side of the second electrode 230 facing away from the substrate 100, so that a sufficient connectable area between the connection electrode 300 and the second electrode 230 can be provided, and connection stability between the connection electrode 300 and the second electrode 230 is improved.
Optionally, at least part of the connection electrode 300 is located on a side of the fifth segment 510 and the sixth segment 520 facing away from the first end 200a, such that the connection electrode 300 is connected to the first electrode 210 of one of the two adjacent device units 200 and the second electrode 230 of the other.
The material of the second insulating layer 500 is not particularly limited in the present application, and the material of the second insulating layer 500 may include an insulating material. Alternatively, the material of the second insulating layer 500 may include at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride, and polymer doped silicon oxide micro powder, so that the second insulating layer 500 may be prepared by printing, or evaporation.
Alternatively, the material of the second insulating layer 500 may include at least one of a thermoplastic polymer material and a thermosetting polymer material, for example, the material of the second insulating layer 500 may include at least one of a polyacrylic resin, a polyimide resin, and an epoxy resin.
Fig. 6 is a partial cross-sectional view of a battery 10 according to still another embodiment of the present application.
As shown in fig. 6, by providing the material of the second insulating layer 500 to include at least one of a thermoplastic polymer material and a thermosetting polymer material, it is possible to provide the thermoplastic polymer material or the thermosetting polymer material over the device unit 200 and then heat it, so that the material can have good fluidity to flow into the first and/or second partition grooves 200c and 200d, and then solidify to form the second insulating layer 500, thereby improving the convenience of manufacturing the second insulating layer 500.
Alternatively, the thermoplastic polymer material or the thermosetting polymer material may be disposed on a side of the material of the device unit 200 facing away from the substrate 100 before the second isolation groove 200d is formed, and then the thermoplastic polymer material or the thermosetting polymer material, the material of the functional unit 220 and the material of the second electrode 230 are etched to form the second isolation groove 200d, wherein the thermoplastic polymer material or the thermosetting polymer material remained after the etching process may be disposed on both sides of the second isolation groove 200d, and the thermoplastic polymer material or the thermosetting polymer material remained after the etching process may be disposed on a side of the second isolation groove 200d facing the first end 200a and a side facing the second end 200 b.
Optionally, the second insulating layer 500 includes a seventh segment 530, and in the adjacent device unit 200, the seventh segment 530 is disposed to cover the functional unit 220 located at the second end 200b and the surface of the second electrode 230 facing the first end 200a side.
Optionally, the second insulating layer 500 further includes an eighth segment 540 connected to the seventh segment 530, and in the adjacent device unit 200, the eighth segment 540 is disposed to cover the surface of the second electrode 230 at the second end 200b facing away from the substrate 100. The seventh segment 530 and the eighth segment 540 may be made of a thermoplastic polymer material or a thermosetting polymer material located on the side of the second partition groove 200d facing the second end 200b, that is, when the second insulating layer 500 is made, the thermoplastic polymer material or the thermosetting polymer material located on the side of the second partition groove 200d facing the second end 200b above the device unit 200 may be heated, so that the material may have better fluidity to flow into the first partition groove 200c and/or the second partition groove 200d, and then be cured to form the seventh segment 530 and the eighth segment 540 of the second insulating layer 500.
Fig. 7 is a schematic flow chart of a preparation method of a battery 10 according to an embodiment of the present application, and fig. 8 to 12 are schematic flow charts of a preparation method of a battery 10 according to an embodiment of the present application.
An embodiment of the second aspect of the present application further provides a method for preparing a battery, where the battery may be the battery 10 provided in at least some embodiments of the first aspect, as shown in fig. 1 to 3 and referring to fig. 7, the method includes:
step S01: as shown in fig. 8, a first electrode material layer 10a, a functional unit material layer 10b, and a second electrode material layer 10c are sequentially formed on a substrate 100.
Step S02: as shown in fig. 9, the functional unit material layer 10b and the second electrode material layer 10c are subjected to etching treatment to form a plurality of functional units 220 and second electrodes 230 arranged at intervals, and second isolation grooves 200d are provided between adjacent functional units 220 and between adjacent second electrodes 230.
Optionally, the functional unit 220 may include a first carrier transport layer, a second carrier transport layer located on a side of the first carrier transport layer away from the substrate 100, and a photoactive layer located between the first carrier transport layer and the second carrier transport layer, so that the battery 10 can convert light energy into electrical energy, and the electrical energy formed by the conversion can be conducted with other device units 200 or external electrical equipment through the first electrode 210 and the second electrode 230.
In the embodiment of the present application, when the device unit 200 is manufactured, the etching process (immediate etching process) performed on the material of the device unit 200 may refer to any kind of etching process that is easy to damage or pollute the film layer of the device unit 200. Alternatively, the etching process performed on the material of the device unit 200 may be a laser etching process. For convenience of description, the etching process of the following embodiments will be described by taking "the etching process performed on the material of the device unit 200 is a laser etching process" as an example.
Step S03: as shown in fig. 10, the first electrode material layer 10a is etched to form a plurality of first electrodes 210 disposed at intervals, a first isolation groove 200c is formed between adjacent first electrodes 210, the first electrodes 210, a second electrode 230 disposed on a side of the first electrodes 210 away from the substrate 100, and a functional unit 220 disposed between the first electrodes 210 and the second electrodes 230 are combined to form a device unit 200, the device unit 200 has a first end 200a and a second end 200b, the number of the device units 200 is at least two, and between two adjacent device units 200, the first end 200a of one of the two device units is disposed opposite to the second end 200b of the other device unit.
Step S04: as shown in fig. 11, a first insulating layer 400 is formed on a side surface of the first electrode 210 located at the first end 200a toward the second end 200 b.
Optionally, the first insulating layer 400 includes a first segment 410 and a second segment 420 connected to each other, and in the adjacent device units 200, the first segment 410 is disposed to cover a surface of the first end 200a facing the second end 200b, and the second segment 420 is disposed to cover a surface of the second electrode 230 located at the first end 200a facing away from the substrate 100. The first segment 410 and the second segment 420 of the first insulating layer 400 can effectively cover the first end 200a of the device unit 200, so that the first end 200a of the device unit 200 is not easy to contact with the second end 200b of the adjacent device unit 200, and the first insulating layer 400 can effectively limit excessive contact between the connection electrode 300 and the first end 200a, so that short circuit connection is not easy to occur between the first electrode 210 and the second electrode 230 in the single device unit 200.
Step S05: as shown in fig. 12, the connection electrode 300 is formed on the surface of the device unit 200 and the surface of the side of the first insulating layer 400 facing away from the first end 200a, and at least part of the connection electrode 300 is located in the second isolation groove 200d and connects the first electrode 210 of one of the adjacent device units 200 and the second electrode 230 of the other.
In embodiments of the present application, there are various methods for preparing the connection electrode 300, and in some embodiments, the connection electrode 300 may be prepared by printing, alternatively, the connection electrode 300 may be prepared by printing conductive paste, for example, the connection electrode 300 may be prepared by printing silver paste, copper paste, carbon paste, conductive graphene, carbon nanotube, or the like. In some embodiments, the connection electrode 300 may also be prepared by printing, alternatively, the connection electrode 300 may be prepared by printing conductive paste, for example, the connection electrode 300 may be prepared by printing nano silver ink, conductive polymer ink, conductive carbon nanotube ink, or the like. In some embodiments, the connection electrode 300 may also be prepared by vapor deposition, alternatively, the connection electrode 300 may be prepared by vapor deposition of a metal material through a Mask (Mask), for example, the connection electrode 300 may be prepared by vapor deposition of silver, copper, gold, a conductive oxide material (e.g., indium tin oxide, indium zinc oxide, etc.), or the like.
The material of the first insulating layer 400 is not particularly limited in the present application, and the material of the first insulating layer 400 may include an insulating material. Optionally, the material of the first insulating layer 400 includes at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride and polymer doped silicon oxide micro powder, so that the first insulating layer 400 may be prepared by printing, printing or vapor deposition in step S04.
Alternatively, as shown in fig. 8 to 11, optionally, in step S01, further includes: the first electrode material layer 10a, the functional unit material layer 10b, the second electrode material layer 10c, and the first insulating material layer 10d are sequentially formed on the substrate 100, and the material of the first insulating material layer 10d includes at least one of a thermoplastic polymer material and a thermosetting polymer material.
In step S04, it may further include: the first insulating material layer 10d at the first end 200a is heated such that at least a portion of the first insulating material layer 10d flows through the second partition grooves 200d and the first partition grooves 200c to form the first insulating layer 400.
By providing the material of the first insulating material layer 10d including at least one of a thermoplastic polymer material and a thermosetting polymer material, the first insulating material layer 10d can be heated, so that the first insulating material layer 10d can have good fluidity to flow into the first and/or second partition grooves 200c and 200d, and then be solidified to form the first insulating layer 400, thereby improving the convenience of manufacturing the first insulating layer 400.
Optionally, the material of the first insulating layer 400 includes at least one of polyacrylic resin, polyimide resin, and epoxy resin.
Alternatively, in the adjacent device units 200, the surface of the inner wall of the first partition groove 200c is coplanar with the surface of the inner wall of at least part of the second partition groove 200d.
Alternatively, in the adjacent device units 200, the surface of the first electrode 210 located at the first end 200a facing the first isolation groove 200c is coplanar with the surface of the functional unit 220 located at the first end 200a facing the second isolation groove 200d, so that when the first insulating layer 400 or the connection electrode 300 is prepared, the material of the first insulating layer 400 or the connection electrode 300 can well fall into the first isolation groove 200c along the inner wall of the second isolation groove 200d, thereby reducing the preparation difficulty of the battery 10.
Optionally, in step S02, further includes: the first insulating material layer 10d is subjected to an etching process to form a plurality of first insulating materials 10e disposed at intervals, and second isolation grooves 200d are formed between adjacent functional units 220, between adjacent second electrodes 230, and between adjacent first insulating materials 10 e.
That is, in this embodiment, the functional unit material layer 10b, the second electrode material layer 10c, and the first insulating material layer 10d may be subjected to etching treatment to form a plurality of functional units 220, second electrodes 230, and first insulating materials 10e disposed at intervals, and to form second isolation trenches 200d between adjacent functional units 220, between adjacent second electrodes 230, and between adjacent first insulating materials 10 e. So that the etching process can be performed from the position where the first insulating material layer 10d is disposed with the first insulating material layer 10d as a reference when preparing the second partition groove 200d, thereby improving the accuracy of the etching process.
Optionally, the first insulating layer 400 includes a third segment 430 and a fourth segment 440 connected to each other, and in the adjacent device units 200, the third segment 430 is disposed to cover the surface of the functional unit 220 and the second electrode 230 located at the second end 200b facing the first end 200a, and the fourth segment 440 is disposed to cover the surface of the second electrode 230 located at the second end 200b facing away from the substrate 100. The third segment 430 and the fourth segment 440 may be made of the first insulating material 10e located on the side of the second isolation groove 200d facing the second end 200b, that is, when the first insulating layer 400 is made, the first insulating material 10e located on the side of the second isolation groove 200d facing the second end 200b above the device unit 200 may be heated, so that the first insulating material 10e may have better fluidity to flow into the first isolation groove 200c and/or the second isolation groove 200d, and then be cured to form the third segment 430 and the fourth segment 440 of the first insulating layer 400.
Fig. 13 is a flowchart of a method for manufacturing a battery 10 according to another embodiment of the present application, and fig. 14 to 19 are diagrams of a method for manufacturing a battery 10 according to another embodiment of the present application.
An embodiment of the second aspect of the present application further provides a method for preparing a battery, where the battery may be the battery 10 provided in at least some embodiments of the first aspect, as shown in fig. 14 to 16 and referring to fig. 13, the method includes:
Step S01: as shown in fig. 14, a first electrode material layer 10a is formed on a substrate 100.
Step S02: as shown in fig. 15, the first electrode material layer 10a is subjected to etching treatment to form a plurality of first electrodes 210 arranged at intervals, and first isolation grooves 200c are provided between adjacent first electrodes 210.
Step S03: as shown in fig. 16, the functional unit material layer 10b and the second electrode material layer 10c are sequentially formed on the first electrode 210, and at least a part of the functional unit material layer 10b is located in the first partition groove 200c.
Step S04: as shown in fig. 17 and 18, the functional unit material layer 10b and the second electrode material layer 10c are etched to form a plurality of functional units 220 and second electrodes 230 that are disposed at intervals, at least a portion of the functional units 220 are located in the first isolation grooves 200c, second isolation grooves 200d are formed between adjacent functional units 220 and between adjacent second electrodes 230, the orthographic projection of the first isolation grooves 200c on the substrate 100 and the orthographic projection of the second isolation grooves 200d on the substrate 100 are staggered, the first electrodes 210, the second electrodes 230 located on the side of the first electrodes 210 away from the substrate 100, and the functional units 220 located between the first electrodes 210 and the second electrodes 230 are combined to form device units 200, the device units 200 have a first end 200a and a second end 200b, and the number of the device units 200 is at least two, and between two adjacent device units 200, the first end 200a of one of the two device units is disposed opposite to the second end 200b of the other device unit.
Optionally, the functional unit 220 may include a first carrier transport layer, a second carrier transport layer located on a side of the first carrier transport layer away from the substrate 100, and a photoactive layer located between the first carrier transport layer and the second carrier transport layer, so that the battery 10 can convert light energy into electrical energy, and the electrical energy formed by the conversion can be conducted with other device units 200 or external electrical equipment through the first electrode 210 and the second electrode 230.
Step S05: as shown in fig. 19, the connection electrode 300 is formed, at least part of the connection electrode 300 being located in the second isolation groove 200d and connecting the first electrode 210 of one of the adjacent device units 200 and the second electrode 230 of the other.
In embodiments of the present application, there are various methods for preparing the connection electrode 300, and in some embodiments, the connection electrode 300 may be prepared by printing, alternatively, the connection electrode 300 may be prepared by printing conductive paste, for example, the connection electrode 300 may be prepared by printing silver paste, copper paste, carbon paste, conductive graphene, carbon nanotube, or the like. In some embodiments, the connection electrode 300 may also be prepared by printing, alternatively, the connection electrode 300 may be prepared by printing conductive paste, for example, the connection electrode 300 may be prepared by printing nano silver ink, conductive polymer ink, conductive carbon nanotube ink, or the like. In some embodiments, the connection electrode 300 may also be prepared by vapor deposition, alternatively, the connection electrode 300 may be prepared by vapor deposition of a metal material through a Mask (Mask), for example, the connection electrode 300 may be prepared by vapor deposition of silver, copper, gold, a conductive oxide material (e.g., indium tin oxide, indium zinc oxide, etc.), or the like.
Optionally, in the adjacent device units 200, the first electrode 210 located at the second end 200b is overlapped with the functional unit 220 located at the first end 200a, so that the first electrode 210 has a sufficient area to be connected with the connection electrode 300, thereby improving connection reliability when the connection electrode 300 is connected with the first electrode 210, reducing resistance between the connection electrode 300 and the first electrode 210, and improving current conduction efficiency between the adjacent device units 200.
Optionally, in step S05, further includes: a second insulating layer 500 is formed on a side surface of the functional unit 220 located at the first end 200a facing the second end 200b, and a connection electrode 300 is formed on a surface of the device unit 200 and a side surface of the second insulating layer 500 facing away from the first end 200 a.
Optionally, the second insulating layer 500 includes a fifth segment 510 and a sixth segment 520 connected to each other, and in the adjacent device unit 200, the fifth segment 510 is disposed to cover a surface of the first end 200a facing the second end 200b, and the sixth segment 520 is disposed to cover a surface of the second electrode 230 at the first end 200a facing away from the substrate 100. The fifth segment 510 and the sixth segment 520 of the second insulating layer 500 can effectively cover the first end 200a of the device unit 200, so that the first end 200a of the device unit 200 is not easy to contact with the second end 200b of the adjacent device unit 200, and the second insulating layer 500 can effectively limit excessive contact between the connection electrode 300 and the first end 200a, so that short circuit connection is not easy to occur between the first electrode 210 and the second electrode 230 in the single device unit 200.
The material of the second insulating layer 500 is not particularly limited in the present application, and the material of the second insulating layer 500 may include an insulating material. Optionally, the material of the second insulating layer 500 includes at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride and polymer doped silicon oxide micro powder, so that the second insulating layer 500 may be prepared by printing, printing or vapor deposition in step S05.
Alternatively, as shown in fig. 14 to 18, optionally, in step S03, further includes: the functional unit material layer 10b, the second electrode material layer 10c, and the second insulating material layer 10f are sequentially formed on the first electrode 210, and the material of the second insulating material layer 10f includes at least one of a thermoplastic polymer material and a thermosetting polymer material.
The step S05 further includes: the second insulating material layer 10f at the first end 200a is heated such that at least a portion of the second insulating material layer 10f flows through the second isolation trenches 200d and the first isolation trenches 200c to form the second insulating layer 500.
By providing the second insulating material layer 10f of a material including at least one of a thermoplastic polymer material and a thermosetting polymer material, the second insulating material layer 10f can be heated, so that the second insulating material layer 10f can have good fluidity to flow into the first and/or second partition grooves 200c and 200d, and then be cured to form the second insulating layer 500, thereby improving the convenience of manufacturing the second insulating layer 500.
Optionally, the material of the second insulating layer 500 includes at least one of polyacrylic resin, polyimide resin, and epoxy resin.
Optionally, in step S04, further includes: the second insulating material layer 10f is subjected to an etching process to form a plurality of second insulating materials 10g disposed at intervals, and second partition grooves 200d are formed between adjacent functional units 220, between adjacent second electrodes 230, and between adjacent second insulating materials 10 g.
That is, in this embodiment, the functional unit material layer 10b, the second electrode material layer 10c, and the second insulating material layer 10f may be subjected to etching treatment to form a plurality of functional units 220, second electrodes 230, and second insulating materials 10g disposed at intervals, and to form second partition grooves 200d between adjacent functional units 220, between adjacent second electrodes 230, and between adjacent second insulating materials 10 g. The second insulating material layer 10f can be used as a reference when the second isolation groove 200d is manufactured, namely, the etching process can be performed from the position where the second insulating material layer 10f is arranged, so that the accuracy of the etching process is improved.
Optionally, the second insulating layer 500 includes a seventh segment 530 and an eighth segment 540 connected to each other, and in the adjacent device unit 200, the seventh segment 530 is disposed to cover the surface of the functional unit 220 and the second electrode 230 located at the second end 200b facing the first end 200a, and the eighth segment 540 is disposed to cover the surface of the second electrode 230 located at the second end 200b facing away from the substrate 100. The seventh segment 530 and the eighth segment 540 may be formed of the second insulating material 10g located on the side of the second isolation groove 200d facing the second end 200b, that is, when the second insulating layer 500 is formed, the second insulating material 10g located on the side of the second isolation groove 200d facing the second end 200b above the device unit 200 may be heated, so that the second insulating material 10g may have better fluidity to flow into the first isolation groove 200c and/or the second isolation groove 200d, and then be cured to form the seventh segment 530 and the eighth segment 540 of the first insulating layer 400.
In the battery 10 manufactured by the manufacturing method provided by the embodiment of the application, the battery 10 comprises the substrate 100, the device units 200 and the connecting electrode 300, the device units 200 are arranged on one side of the substrate 100, the device units 200 comprise the first electrode 210, the second electrode 230 positioned on one side of the first electrode 210 away from the substrate 100 and the functional unit 220 positioned between the first electrode 210 and the second electrode 230, the number of the device units 200 is at least two, and the connecting electrode 300 is arranged to connect the first electrode 210 of one of the adjacent device units 200 and the second electrode 230 of the other device unit, so that the two adjacent device units 200 can be connected in series through the connecting electrode 300, thereby effectively reducing the current transmission path of the battery 10, improving the output voltage of the battery 10 and reducing the boosting loss of the electric energy output of the battery 10.
In addition, since the connection electrode 300 may be prepared independently of the device unit 200, that is, the device unit 200 may be prepared first and then the connection electrode 300 may be prepared, and therefore, between adjacent device units 200, only the first partition groove 200c may be provided between adjacent first electrodes 210, and only the second partition groove 200d may be provided between adjacent functional units 220 and between adjacent second electrodes 230, thereby partitioning the adjacent device units 200, so that when the device unit 200 is manufactured, only the material of the device unit 200 may be subjected to the etching process at most two times to form the first partition groove 200c and the second partition groove 200d, and thus, the material of the device unit 200 may be partitioned into the plurality of device units 200. Therefore, the fewer times of etching process can reduce the risk of contamination, so that each film layer in the device unit 200 is not easily damaged, thereby improving the operational reliability and the production yield of the battery 10.
In accordance with the above embodiments of the application, these embodiments are not exhaustive of all details, nor are they intended to limit the application to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and the practical application, to thereby enable others skilled in the art to best utilize the application and various modifications as are suited to the particular use contemplated. The application is limited only by the claims and the full scope and equivalents thereof.

Claims (12)

1. A battery, comprising:
a substrate;
the device unit is arranged on one side of the substrate, the device unit comprises a first electrode, a second electrode positioned on one side of the first electrode away from the substrate and a functional unit positioned between the first electrode and the second electrode, the device unit is provided with a first end and a second end, the number of the device units is at least two, the device units are arranged between two adjacent device units, the first end of one device unit and the second end of the other device unit are arranged opposite to each other, a first separation groove is formed between the adjacent first electrodes, and a second separation groove is formed between the adjacent functional units and between the adjacent second electrodes;
And a connection electrode at least partially disposed in the second isolation groove and connecting the first electrode adjacent to one of the device units and the second electrode adjacent to the other device unit.
2. The battery of claim 1, wherein the first separator groove and the second separator groove are in communication with each other, the battery further comprising a first insulating layer between at least the first electrode and the connection electrode at the first end;
preferably, the first insulating layer is also disposed between the functional unit and the connecting electrode at the first end;
preferably, the first insulating layer includes a first segment disposed to cover a surface of the first end toward the second end side in the adjacent device units;
preferably, the first insulating layer further includes a second segment connected to the first segment, and in the adjacent device unit, the second segment is disposed to cover a surface of the second electrode at the first end, which is away from the substrate;
preferably, at least part of the connection electrode is located on a side of the first section facing away from the first end with the second section;
Preferably, in the adjacent device units, at least part of the connection electrodes are located on the side of the second section away from the substrate and overlap with the second electrodes located at the first end;
preferably, in the adjacent device units, the surface of the inner wall of the first isolation groove is coplanar with the surface of at least part of the inner wall of the second isolation groove;
preferably, in the adjacent device units, a surface of the first electrode at the first end facing the first isolation groove is coplanar with a surface of the functional unit at the first end facing the second isolation groove;
preferably, the material of the first insulating layer comprises at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride and high polymer doped silicon oxide micro powder;
preferably, the material of the first insulating layer includes at least one of a thermoplastic polymer material and a thermosetting polymer material;
preferably, the material of the first insulating layer includes at least one of polyacrylic resin, polyimide resin, and epoxy resin;
preferably, the first insulating layer includes a third segment that is provided to cover the functional unit located at the second end and a surface of the second electrode toward the first end side in the adjacent device units;
Preferably, the first insulating layer further includes a fourth segment connected to the third segment, and in the adjacent device unit, the fourth segment is disposed to cover a surface of the second electrode located at the second end, which surface is away from the substrate.
3. The battery of claim 1, wherein an orthographic projection of the first separator groove on the substrate is offset from an orthographic projection of the second separator groove on the substrate, at least a portion of the functional unit being located within the first separator groove;
preferably, in the adjacent device units, the first electrode at the second end overlaps the functional unit at the first end.
4. A battery according to claim 3, wherein in the adjacent device units, a second insulating layer is provided between the functional unit located at the first end and the connection electrode;
preferably, the second insulating layer includes a fifth segment disposed to cover a surface of the first end toward the second end side in the adjacent device unit;
preferably, the second insulating layer further includes a sixth segment connected to the fifth segment, and in the adjacent device unit, the sixth segment is disposed to cover a surface of the second electrode at the first end, which is away from the substrate;
Preferably, at least part of the connection electrode is located on a side of the fifth segment facing away from the first end with the sixth segment;
preferably, in adjacent said device units, at least part of said connection electrode is located on a side of said sixth segment facing away from said substrate and overlaps said second electrode located at said first end;
preferably, the material of the second insulating layer comprises at least one of acrylic resin, polyimide resin, epoxy resin, parylene, silicon oxide, silicon nitride and high polymer doped silicon oxide micro powder;
preferably, the material of the second insulating layer includes at least one of a thermoplastic polymer material and a thermosetting polymer material;
preferably, the material of the second insulating layer includes at least one of polyacrylic resin, polyimide resin, and epoxy resin;
preferably, the second insulating layer includes a seventh segment that is provided to cover the functional unit located at the second end and a surface of the second electrode toward the first end side in the adjacent device units;
preferably, the second insulating layer further includes an eighth segment connected to the seventh segment, and in the adjacent device unit, the eighth segment is disposed to cover a surface of the second electrode at the second end, which is away from the substrate.
5. The battery according to any one of claims 1 to 4, wherein the functional unit includes a first carrier transport layer, a second carrier transport layer located on a side of the first carrier transport layer facing away from the substrate, and a photoactive layer located between the first carrier transport layer and the second carrier transport layer.
6. The battery according to any one of claims 1 to 4, wherein cross-sectional areas of the functional units and the second electrode gradually decrease, and/or cross-sectional areas of the first electrode gradually decrease, in a direction away from the substrate.
7. A method of manufacturing a battery, comprising:
sequentially forming a first electrode material layer, a functional unit material layer and a second electrode material layer on a substrate;
etching the functional unit material layer and the second electrode material layer to form a plurality of functional units and second electrodes which are arranged at intervals, wherein second isolation grooves are formed between adjacent functional units and between adjacent second electrodes;
etching the first electrode material layer to form a plurality of first electrodes arranged at intervals, wherein a first separation groove is formed between every two adjacent first electrodes, the first electrodes, a second electrode positioned on one side of the first electrodes, which is far away from the substrate, and functional units positioned between the first electrodes and the second electrodes are combined to form device units, each device unit is provided with a first end and a second end, the number of the device units is at least two, and the first end of one device unit and the second end of the other device unit are arranged in opposite directions between every two adjacent device units;
Forming a first insulating layer on a side surface of the first electrode located at the first end toward the second end;
a connection electrode is formed on a surface of the device unit and a side surface of the first insulating layer facing away from the first end, at least a portion of the connection electrode being located in the second isolation groove and connecting the first electrode of one of the adjacent device units and the second electrode of the other.
8. The method of claim 7, wherein the step of sequentially forming the first electrode material layer, the functional unit material layer, and the second electrode material layer on the substrate further comprises:
sequentially forming a first electrode material layer, a functional unit material layer, a second electrode material layer and a first insulating material layer on a substrate, wherein the material of the first insulating material layer comprises at least one of a thermoplastic polymer material and a thermosetting polymer material;
the step of forming a first insulating layer on a side surface of the first electrode located at the first end facing the second end further includes:
heating the first insulating material layer at the first end to enable at least part of the first insulating material layer to flow through the second isolation groove and the first isolation groove to form the first insulating layer;
Preferably, in the adjacent device units, the surface of the inner wall of the first isolation groove is coplanar with the surface of at least part of the inner wall of the second isolation groove;
preferably, in the adjacent device units, a surface of the first electrode at the first end facing the first isolation groove is coplanar with a surface of the functional unit at the first end facing the second isolation groove;
preferably, the material of the first insulating layer includes at least one of polyacrylic resin, polyimide resin, and epoxy resin.
9. The method of claim 8, wherein the step of etching the functional unit material layer and the second electrode material layer to form a plurality of functional units and second electrodes disposed at intervals, the adjacent functional units and the adjacent second electrodes having second barrier grooves therebetween further comprises:
and etching the first insulating material layer to form a plurality of first insulating materials arranged at intervals, wherein the second isolating grooves are formed among the adjacent functional units, the adjacent second electrodes and the adjacent first insulating materials.
10. A method of manufacturing a battery, comprising:
forming a first electrode material layer on a substrate;
etching the first electrode material layer to form a plurality of first electrodes arranged at intervals, wherein first isolation grooves are formed between the adjacent first electrodes;
sequentially forming a functional unit material layer and a second electrode material layer on the first electrode, wherein at least part of the functional unit material layer is positioned in the first isolation groove;
etching the functional unit material layer and the second electrode material layer to form a plurality of functional units and second electrodes which are arranged at intervals, wherein at least part of the functional units are positioned in the first separation grooves, second separation grooves are formed between adjacent functional units and between adjacent second electrodes, orthographic projections of the first separation grooves on the substrate are staggered with orthographic projections of the second separation grooves on the substrate, the first electrodes, the second electrodes positioned on one side, away from the substrate, of the first electrodes and the functional units positioned between the first electrodes and the second electrodes are combined to form device units, the number of the device units is at least two, and the first ends and the second ends of one device unit are arranged in opposite directions between two adjacent device units;
Forming a connection electrode at least partially located in the second isolation groove and connecting the first electrode adjacent to one of the device units and the second electrode of the other;
preferably, in the adjacent device units, the first electrode at the second end overlaps the functional unit at the first end.
11. The method of claim 10, wherein in the step of forming a connection electrode, at least a portion of the connection electrode being located in the second isolation trench and connecting the first electrode of one of the adjacent device units and the second electrode of the other, further comprising:
a second insulating layer is formed on a side surface of the functional unit located at the first end facing the second end, and a connection electrode is formed on a surface of the device unit and a side surface of the second insulating layer facing away from the first end.
12. The method of claim 11, wherein sequentially forming a functional unit material layer and a second electrode material layer on the first electrode, at least a portion of the functional unit material layer being located in the first barrier groove, further comprises:
Sequentially forming a functional unit material layer, a second electrode material layer and a second insulating material layer on the first electrode, wherein the material of the second insulating material layer comprises at least one of a thermoplastic polymer material and a thermosetting polymer material;
forming a second insulating layer on a side surface of the functional unit located at the first end facing the second end, and forming a connection electrode on a surface of the device unit and a side surface of the second insulating layer facing away from the first end, the step of forming a connection electrode further includes:
heating a second insulating material layer at the first end to cause at least a portion of the second insulating material layer to flow through the second isolation trench and the first isolation trench to form the second insulating layer;
preferably, the material of the second insulating layer includes at least one of polyacrylic resin, polyimide resin, and epoxy resin.
CN202311103681.XA 2023-08-30 2023-08-30 Battery and preparation method thereof Pending CN116981274A (en)

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