阅读说明：本技术 一种轻质柔性复合能源采集器件结构及其制备方法 (Light flexible composite energy collecting device structure and preparation method thereof ) 是由 马宁华 徐建明 唐道远 蒋帅 周丽华 吴敏 于 2021-06-25 设计创作，主要内容包括：一种轻质柔性复合能源采集器件结构及其制备方法,针对环境能源利用需求,将高效柔性薄膜太阳能电池与轻质摩擦发电两种不同特性的单体电池,通过中间层进行复合。中间层采用多层膜结构设计,即可作为两种电池的隔离层和支撑层,同时作为太阳能电池的电路层。为防止电荷相消,摩擦发电采用网格化设计,包含多个摩擦发电模块,每个发电模块结构独立,多个发电模块分别进行能量采集。通过区域选择性键合和硅橡胶粘合,分别完成摩擦发电、太阳能电池与中间层的复合,实现复合能源器件对太阳能和机械能的高效采集,满足野外智能装备对全天候、长时间、轻量化发电器件的应用需求。(A light flexible composite energy collection device structure and a preparation method thereof are disclosed, aiming at the environmental energy utilization requirement, two single batteries with different characteristics, namely a high-efficiency flexible thin-film solar battery and a light friction power generation, are compounded through an intermediate layer. The middle layer adopts a multilayer film structure design, can be used as an isolation layer and a supporting layer of two batteries, and can be used as a circuit layer of a solar battery. In order to prevent charge cancellation, the friction power generation adopts a gridding design and comprises a plurality of friction power generation modules, each power generation module is independent in structure, and the plurality of power generation modules respectively collect energy. Through regioselective bonding and silicon rubber adhesion, friction power generation and compounding of the solar cell and the middle layer are respectively completed, efficient collection of solar energy and mechanical energy by the composite energy device is realized, and the application requirements of field intelligent equipment on all-weather long-time light-weight power generation devices are met.)

1. The utility model provides a flexible compound energy harvesting device structure of light which characterized in that: the solar cell comprises a flexible solar cell structure layer (11), an adhesive layer (12), an intermediate layer (13), a composite layer (14) and a friction power generation cell layer (15) which are sequentially connected in a composite manner;

the flexible solar cell structure layer (11) is a flexible thin-film solar cell;

the adhesive layer (12) is made of silicon rubber materials, and the flexible solar cell structure layer (11) and the middle layer (13) are bonded together in a flexible solar cell transfer mode;

the middle layer (13) comprises a plurality of insulating film layers and conductive film layers which are formed by hot-pressing compounding;

the composite layer (14) is a metal bonding layer formed by bonding a bonding area on the middle layer (13) and metal layers on the periphery of the friction power generation module through selective hot-press bonding;

the friction power generation cell layer (15) comprises a plurality of friction power generation modules distributed in a gridding mode, and each power generation module is provided with an independent friction structure.

2. The structure of a lightweight flexible composite energy harvesting device according to claim 1, wherein: the flexible solar cell structure layer (11) is set to be a serial or parallel or serial and parallel structure according to requirements, and a transparent polyimide film with the temperature resistance range of more than-100 ℃ to +100 ℃ is selected as an upper surface packaging material of the solar cell.

3. The structure of a lightweight flexible composite energy harvesting device according to claim 1, wherein: the flexible solar cell of the flexible solar cell structure layer (11) is transferred by adopting a thermal stripping film, and the flexible cell is adhered to the surface of the flexible cell film to support the bent flexible cell.

4. The structure of a lightweight flexible composite energy harvesting device according to claim 1, wherein: in the middle layer (13), a battery circuit is arranged in the flexible insulating film layer, the flexible insulating film layer is compounded in a hot pressing mode, and a welding window is reserved on one side of the middle layer (13) and used for outputting the power of the solar battery.

5. The structure of claim 4, wherein the structure of the light-weight flexible composite energy harvesting device is characterized in that: and a metal foil is partially arranged in the other side of the middle layer (13), and a metal bonding area is prepared in a partially hollow mode.

6. The structure of claim 4, wherein the structure of the light-weight flexible composite energy harvesting device is characterized in that: the local metal bonding areas are prepared by means of sputtering a metal layer on the other side of the intermediate layer (13).

7. The structure of a lightweight flexible composite energy harvesting device according to claim 1, wherein: the friction power generation module is formed by weaving polyimide and an aluminum film which are respectively used as a positive friction material and a negative friction material.

8. The lightweight flexible composite energy harvesting device structure of claim 7, wherein: the polyimide film is a base material of the friction material, the aluminum film is sputtered on the polyimide film, and the friction material surface is textured by fluorine-containing plasma treatment.

9. The structure of a lightweight flexible composite energy harvesting device according to claim 1, wherein: the aluminum film surface of the friction power generation module faces the middle layer (13), and metal layers are arranged around the friction power generation module.

10. The method for preparing the light flexible composite energy collecting device structure according to any one of claims 1 to 9, characterized by comprising the following steps:

step 1, adopting a flexible thin film gallium arsenide battery, a flexible amorphous silicon battery or a flexible copper indium gallium selenide battery, carrying out series connection design according to design requirements, and realizing series connection of flexible solar batteries by hot-press welding or low-temperature resistance welding to form a flexible solar battery string;

step 2, sputtering an aluminum film on the polyimide; texturing the friction material by fluorine-containing plasma, wherein a positive friction surface of the positive material is a textured polyimide surface, a negative friction surface of the negative material is a textured aluminum film surface, and performing plane weaving on the positive friction material and the negative friction material to prepare a friction power generation module;

step 3, a polyimide built-in copper foil battery circuit is manufactured into an intermediate layer (13) through hot-pressing compounding; and preparing a bonding region on the other side of the intermediate layer (13);

step 4, cleaning a bonding area on the intermediate layer (13) and a bonding area on the friction power generation module, putting the bonding areas into vacuum bonding equipment for heating, locally pressurizing and bonding the bonding areas, and combining the friction power generation module and the intermediate layer (13);

step 5, supporting the front side of the flexible solar cell string by using a thermal stripping film, bonding the flexible solar cell string on the intermediate layer (13), and welding the electrode of the flexible solar cell string with the welding window on the intermediate layer (13);

and 6, packaging the front surface of the flexible solar cell string by adopting polyimide.

Technical Field

The invention relates to a light flexible composite energy collection device structure and a preparation method thereof, belonging to the technical field of renewable energy systems.

Background

With the development of science and technology, outdoor operators such as mountaineering, exploration and individual soldier are equipped with a large amount of digital equipment, so that the demand of the outdoor equipment on electric energy is increased rapidly, and the outdoor operators have to carry a large amount of rechargeable batteries as a power supply for carrying intelligent equipment, so that the physical consumption of the outdoor operators is greatly increased, the exertion of the mobility of the outdoor operators is limited, and meanwhile, the rechargeable batteries are limited in service time, and the carried intelligent equipment cannot work normally under the condition that the intelligent equipment cannot be charged timely. Therefore, it is necessary to develop a lightweight energy harvesting system capable of generating power continuously, and to fully utilize environmental energy.

The solar cell is an energy device for converting sunlight into electricity, the solar cell can be used for generating electricity at a place where the sun can irradiate, and the solar cell is inexhaustible, clean, pollution-free and noise-free, so that the high-efficiency light solar cell has great advantages in field environment energy supply. Although the solar photovoltaic device has a high output, it is easily affected by weather and cannot be continuously operated. Therefore, an all-weather energy source for continuously supplying power for a long time is required to be found.

Disclosure of Invention

The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the light flexible composite energy collecting device structure and the preparation method thereof are provided, the energy in the environment is fully utilized to generate electricity, and the all-weather continuous power supply requirement is met.

The technical solution of the invention is as follows: a light flexible composite energy collecting device structure comprises a flexible solar cell structure layer, an adhesive layer, an intermediate layer, a composite layer and a friction power generation cell layer which are sequentially connected in a composite mode;

the flexible solar cell structure layer is a flexible thin-film solar cell;

the adhesive layer is made of silicon rubber materials, and the flexible solar cell structure layer and the middle layer are bonded together in a flexible solar cell transfer mode;

the middle layer comprises a plurality of insulating film layers and conductive film layers which are formed by hot-pressing compounding;

the composite layer is a metal bonding layer formed by bonding a bonding area on the middle layer with metal layers on the periphery of the friction power generation module through selective hot-press bonding;

the friction power generation battery layer comprises a plurality of friction power generation modules which are distributed in a grid mode, and each power generation module is provided with an independent friction structure.

Furthermore, the flexible solar cell structure layer is set to be a serial or parallel or serial and parallel structure according to requirements, and a transparent polyimide film with the temperature resistance range of more than-100 ℃ to +100 ℃ is selected as the upper surface packaging material of the solar cell.

Further, the flexible solar cell of the flexible solar cell structure layer is transferred by adopting a thermal peeling film, and the bent flexible cell is supported by being adhered to the film surface of the flexible cell.

Furthermore, in the middle layer, a battery circuit is arranged in the flexible insulating film layer, the flexible insulating film layer is compounded in a hot pressing mode, and a welding window is reserved on one side of the middle layer and used for outputting the power of the solar battery.

Furthermore, a metal foil is partially arranged in the other side of the middle layer, and a metal bonding area is prepared in a partially hollow mode.

Further, the local metal bonding area is prepared by means of sputtering a metal layer on the other side of the intermediate layer.

Furthermore, the friction power generation module is formed by weaving polyimide and an aluminum film which are respectively used as a positive friction material and a negative friction material.

Furthermore, the polyimide film is a base material of the friction material, the aluminum film is sputtered on the polyimide film, and the friction material surface is textured by fluorine-containing plasma treatment.

Furthermore, the aluminum film surface of the friction power generation module faces the middle layer, and metal layers are arranged around the friction power generation module.

The preparation method of the light flexible composite energy collecting device structure comprises the following steps:

step 1, adopting a flexible thin film gallium arsenide battery, a flexible amorphous silicon battery or a flexible copper indium gallium selenide battery, carrying out series connection design according to design requirements, and realizing series connection of flexible solar batteries by hot-press welding or low-temperature resistance welding to form a flexible solar battery string;

step 2, sputtering an aluminum film on the polyimide; texturing the friction material by fluorine-containing plasma, wherein a positive friction surface of the positive material is a textured polyimide surface, a negative friction surface of the negative material is a textured aluminum film surface, and performing plane weaving on the positive friction material and the negative friction material to prepare a friction power generation module;

step 3, a copper foil battery circuit is arranged in the polyimide, and a middle layer is manufactured through hot-pressing compounding; preparing a bonding area on the other side of the intermediate layer;

step 4, cleaning the bonding area on the middle layer and the bonding area on the friction power generation module, putting the bonding areas into vacuum bonding equipment for heating, locally pressurizing and bonding the bonding areas, and combining the friction power generation module and the middle layer together;

step 5, supporting the front side of the flexible solar cell string by using a thermal stripping film, bonding the flexible solar cell string on the intermediate layer, and welding the electrode of the flexible solar cell string with the welding window on the intermediate layer;

and 6, packaging the front surface of the flexible solar cell string by adopting polyimide.

Compared with the prior art, the invention has the advantages that:

according to the invention, under the condition that the conversion efficiency of the solar cell and the light friction power generation cell is not reduced, the light flexible composition of the solar cell and the friction power generation cell is realized by designing a special intermediate layer structure, and the utilization efficiency of environmental energy is improved. (ii) a

Drawings

FIG. 1 is a schematic structural diagram of a flexible composite energy collecting device;

FIG. 2 is a schematic illustration of an array of friction power generating modules;

FIG. 3 illustrates an intermediate layer structure with a hollowed-out metal bonding region;

fig. 4 employs an intermediate layer structure of sputtered metal bonding areas.

Detailed Description

In order to better understand the technical solutions, the technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.

The light flexible composite energy collector comprises a flexible thin-film solar cell and a light friction power generation cell, and realizes effective collection of solar energy and friction energy.

On the premise of not reducing the conversion efficiency of the solar cell and the friction power generation cell, the flexible light combination of two heterogeneous cells is realized by directly compounding the intermediate layer, the energy collection range of the energy collection device can be remarkably improved, and the engineering application of the energy collection device in a long-term field environment is promoted.

The structure and the preparation method of the light flexible composite energy collecting device provided by the embodiments of the present application are further described in detail below with reference to the drawings of the specification, and the specific implementation manners may include (as shown in fig. 1 to 4): the solar cell comprises a flexible solar cell structure layer 11, an adhesive layer 12, an intermediate layer 13, a composite layer 14 and a friction power generation cell layer 15.

The flexible solar cell structure layer 11 is designed by adopting flexible thin film solar cells in series-parallel connection according to requirements, and selects a transparent Polyimide (PI) film with high and low temperature resistance and ultraviolet resistance as an upper surface packaging material of the solar cell.

The adhesive layer 12 is made of a silicon rubber material, the flexible solar cell and the intermediate layer are bonded together in a flexible solar cell transfer mode, and further, the flexible solar cell transfer is made of a thermal peeling film, and the flexible solar cell is bonded with the film surface of the flexible cell to support the bent flexible cell.

The middle layer 13 is positioned below the solar cell and is formed by hot-pressing and compounding a plurality of insulating film layers and conductive film layers. Furthermore, a battery circuit is arranged in the flexible insulating film layer, compounding is carried out in a hot pressing mode, and a welding window is reserved on one side of the middle layer and used for outputting the power of the solar battery. Furthermore, a metal foil is partially arranged in the other side of the middle layer, and a metal bonding area is prepared in a partially hollow mode. Furthermore, the local metal bonding region can be prepared by sputtering a metal layer on the other side of the intermediate layer.

The composite layer 14 is a metal bonding layer formed by bonding a bonding area on the middle layer with metal layers around the friction power generation module through selective hot-press bonding.

The friction power generation battery layer 15 is formed by a plurality of friction power generation modules distributed in a gridding manner, and each power generation module has an independent friction structure. Furthermore, the friction power generation module is formed by weaving polyimide and an aluminum film which are respectively used as a positive friction material and a negative friction material. Furthermore, the polyimide film is a base material of the friction material, the aluminum film is sputtered on the polyimide film, and the friction material surface is textured by fluorine-containing plasma treatment. Furthermore, the aluminum film surface of the friction power generation module faces the middle layer, and metal layers are arranged around the friction power generation module.

Example 1

The invention provides a function integrated light solar cell module, which comprises: the flexible solar cell comprises a flexible solar cell structure layer 11, an adhesive layer 12, an intermediate layer 13, a composite layer 14, a friction power generation cell layer 15 and the like. The preparation method comprises the following specific steps:

step 1: the flexible battery is prepared in a series connection mode, a flexible thin film gallium arsenide battery or a flexible amorphous silicon battery or a flexible copper indium gallium selenide battery and the like are adopted, series connection design is carried out according to design requirements, and the series connection of the batteries is achieved through a hot-press welding mode or a low-temperature resistance welding mode.

Step 2: massage deviceElectrically preparing an electricity wiping module by sputtering an aluminum film on polyimide with the thickness of 12.5 mu m, the thickness of 0.2 mu m and the sputtering pressure of 1 multiplied by 10^-3pa, sputtering power of 200W, and sputtering time duration of 1 h. The friction material is textured by fluorine-containing plasma, the positive friction surface of the positive material is a textured polyimide surface, the negative friction surface of the negative material is a textured aluminum film surface, and the positive friction material and the negative friction material are subjected to plane weaving to prepare a friction power generation module with the area of 50mm multiplied by 50 mm.

And step 3: and preparing an intermediate layer, wherein the intermediate layer is formed by compounding a plurality of layers of polyimide built-in metal copper foils and aluminum foils through hot pressing as shown in figure 3. 17 and 21 are polyimide films of 12.5 microns, 19 is a polyimide film of 25 microns, 18 is a metal copper foil of 35 microns in thickness and 2mm in width, 22 is a battery circuit welding window of 8mm in length and 2mm in width, the battery circuit welding window is formed by laser engraving, 20 is an aluminum foil of 35 microns in thickness and 5mm in width, 27 metal bonding areas are formed by laser engraving, the peripheral dimension of each bonding area is 50mm multiplied by 50mm, and the width of each bonding area is 5mm, and each bonding area is a square frame in the positive direction. 23. 24, 25, 26 are 15 μm epoxy glue adhesive layers.

And 4, step 4: and cleaning the bonding area on the middle layer and the bonding area on the friction power generation module, putting the cleaned bonding areas into vacuum bonding equipment, heating the bonding areas to 300 ℃, locally pressurizing the bonding areas for 5000N for bonding for 1h, and combining the friction power generation module and the middle layer together.

And 5: and supporting the front surface of the flexible battery by using a thermal stripping film, bonding the battery on the middle layer by using 704 silicon rubber, and welding the electrode of the battery string with the welding window on the middle layer.

Step 6: and packaging the front side of the flexible solar cell by adopting a transparent PI.

Example 2

The invention provides a function integrated light solar cell module, which comprises: the flexible solar cell comprises a flexible solar cell structure layer 11, an adhesive layer 12, an intermediate layer 13, a composite layer 14, a friction power generation cell layer 15 and the like. The preparation method comprises the following specific steps:

step 1: the flexible battery is prepared in a series connection mode, a flexible thin film gallium arsenide battery or a flexible amorphous silicon battery or a flexible copper indium gallium selenide battery and the like are adopted, series connection design is carried out according to design requirements, and the series connection of the batteries is achieved through a hot-press welding mode or a low-temperature resistance welding mode.

Step 2: electrically preparing a friction power generation module by sputtering an aluminum film on polyimide with the thickness of 12.5 mu m, the thickness of 0.2 mu m and the sputtering pressure of 1 multiplied by 10^-3pa, sputtering power of 200W, and sputtering time duration of 1 h. The friction material is textured by fluorine-containing plasma, the positive friction surface of the positive material is a textured polyimide surface, the negative friction surface of the negative material is a textured aluminum film surface, and the positive friction material and the negative friction material are subjected to plane weaving to prepare a friction power generation module with the area of 50mm multiplied by 50 mm.

And step 3: and preparing an intermediate layer, wherein the intermediate layer is formed by polyimide built-in copper foil battery circuits through hot-pressing compounding as shown in figure 4. Wherein, 17 is polyimide with 12.5 μm, 18 is metal copper foil with 35 μm thickness and 2mm width, 19 is polyimide with 25 μm, and 22 is a battery circuit welding window with 8mm length and 2mm width, which is formed by laser engraving; 28 is 200nm, 5mm wide aluminum foil, prepared by magnetron sputtering. 23. 24 is a 15 μm epoxy glue adhesive layer.

And 4, step 4: and cleaning the bonding area on the middle layer and the bonding area on the friction power generation module, putting the cleaned bonding areas into vacuum bonding equipment, heating the bonding areas to 300 ℃, locally pressurizing the bonding areas for 5000N for bonding for 1h, and combining the friction power generation module and the middle layer together.

And 5: and supporting the front surface of the flexible battery by using a thermal stripping film, bonding the battery on the middle layer by using 704 silicon rubber, and welding the electrode of the battery string with the welding window on the middle layer.

Step 6: and packaging the front side of the flexible solar cell by adopting a transparent PI.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.