CN114142790A - Knapsack and power generation mechanism - Google Patents
Knapsack and power generation mechanism Download PDFInfo
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- CN114142790A CN114142790A CN202111181121.7A CN202111181121A CN114142790A CN 114142790 A CN114142790 A CN 114142790A CN 202111181121 A CN202111181121 A CN 202111181121A CN 114142790 A CN114142790 A CN 114142790A
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- 238000010248 power generation Methods 0.000 title claims abstract description 66
- 230000007246 mechanism Effects 0.000 title claims abstract description 59
- 239000011810 insulating material Substances 0.000 claims abstract description 14
- 230000010287 polarization Effects 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 2
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 3
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims 1
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims 1
- 239000008393 encapsulating agent Substances 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- -1 Polydimethylsiloxane Polymers 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical compound FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 description 1
- 241000242587 Aurelia Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
- A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
- A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
-
- 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
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/04—Friction generators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention provides a backpack and a power generation mechanism, which comprise a backpack body and a power generation mechanism arranged on the backpack body, wherein the power generation mechanism comprises an IBC solar cell, the IBC solar cell is provided with a first electrode and a second electrode which are positioned on the back surface of the IBC solar cell, and the first electrode and the second electrode are arranged up and down; the power generation mechanism further includes: a friction plate which is in contact with the back surface of the IBC solar cell and can move up and down relative to the IBC solar cell, wherein the friction plate is made of an insulating material with an electronic capacity larger than that of the first electrode and the second electrode; the power generation mechanism at least has a first state and a second state, and in the first state, the friction plate is in contact with the first electrode and is separated from the second electrode; in the second state, the friction plate is in contact with the second electrode and is separated from the first electrode. The backpack has a photovoltaic power generation function, can convert mechanical energy generated when a user walks into electric energy, and has high electric energy output power.
Description
Technical Field
The invention belongs to the field of photovoltaics, and particularly relates to a backpack and a power generation mechanism.
Background
Solar energy knapsack has integrated solar panel on the knapsack, can utilize solar energy power generation to supply the electric quantity for the electronic product who carries when outdoor exercises. However, solar power generation is greatly affected by weather, sun angle, and backpack orientation, and cannot provide electric energy continuously and stably. And the user can produce a large amount of mechanical energy in the process of carrying the backpack for sports, and if the mechanical energy can be collected and utilized, the power generation efficiency can be improved.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a backpack having photovoltaic power generation function, which can convert mechanical energy generated when a user walks into electrical energy, and has high electrical energy output power.
Another object of the present invention is to provide a power generating mechanism, which has a photovoltaic power generating function, and can also convert mechanical energy generated during movement into electric energy, and has a higher electric energy output power.
In order to achieve the purpose, the invention adopts the technical scheme that:
a backpack comprises a backpack body and a power generation mechanism arranged on the backpack body, wherein the power generation mechanism comprises an IBC solar cell, the IBC solar cell is provided with a first electrode and a second electrode which are positioned on the back surface of the IBC solar cell, and the first electrode and the second electrode are arranged up and down; the power generation mechanism further includes:
a friction plate contacting a back surface of the IBC solar cell and being movable up and down with respect to the IBC solar cell, the friction plate being made of an insulating material having an electron capacity greater than that of the first electrode and the second electrode;
wherein the power generation mechanism has at least a first state in which the friction plate is in contact with the first electrode and is separated from the second electrode, and a second state in which the friction plate is in contact with the first electrode; in the second state, the friction plate is in contact with the second electrode and is separated from the first electrode.
Preferably, the number of the friction plates is multiple and the friction plates are arranged at intervals up and down, the orthographic projections of the friction plates and the gaps between two adjacent friction plates on the back surface of the IBC solar cell are respectively covered by the orthographic projections of the first electrode or the second electrode or respectively coincide with the orthographic projections of the first electrode or the second electrode, when the power generation mechanism is in the first state, each friction plate covers one first electrode, and the second electrode between the covered first electrodes is opposite to the gap; when the power generation mechanism is in the second state, each of the friction plates covers one of the second electrodes, and the first electrode between the covered second electrodes is opposed to the gap.
Preferably, the IBC solar cell has a first polarization part and a second polarization part on a back surface thereof, a left end of each of the first electrodes is in contact conduction with the first polarization part, and a right end of each of the second electrodes is in contact conduction with the second polarization part; the left ends of the friction plates are connected through a first connecting part, and the right ends of the friction plates are connected through a second connecting part; the first connection portion and the first polarization portion are disposed opposite to each other, and the second connection portion and the second polarization portion are disposed opposite to each other.
Preferably, the number of friction plates is less than half of the number of first electrodes or second electrodes.
Preferably, the power generation mechanism further comprises an upper frame and a lower frame, the IBC solar cell is connected between the upper frame and the lower frame, and the friction plate is connected between the upper frame and the lower frame in a vertically movable manner.
Preferably, an elastic member is arranged between the friction plate and the upper frame and/or the lower frame.
Preferably, the triboelectric charge density of the insulating material is less than-80 μ Cm-2。
Preferably, the insulating material is selected from one or more of PDMS, PTFE, FEP.
Preferably, the power generation mechanism further includes an insulation reinforcement plate, and the friction plate is coated on a surface of the insulation reinforcement plate on a side opposite to the IBC solar cell.
Preferably, the power generation mechanism further comprises a panel and an encapsulant between the panel and the front side of the IBC solar cell.
Preferably, the backpack body comprises a main body for forming an accommodating space and a strap for attaching the main body to the body of a user, and the power generation mechanism is arranged on one side of the main body far away from the body of the user.
The invention also adopts the following technical scheme:
a power generation mechanism is the power generation mechanism.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages:
according to the backpack, the IBC solar cell can perform photoelectric conversion to perform photovoltaic power generation, the backpack body is provided with the power generation mechanism, the friction plates can be in contact friction with the first electrode and the second electrode respectively, static charges are gathered on the friction plates due to difference of electron obtaining capacities of the friction plates and the two electrodes, the first electrode and the second electrode generate a potential difference through electrostatic induction, and electric energy is output outwards, so that the friction between the backpack and a user can be converted into electric energy when the backpack moves along with the user, the backpack can generate power in a mode of converting mechanical energy into electric energy under the condition of insufficient illumination, the electric energy is output stably, and the power generation power is improved; and the friction plate converts mechanical energy into electric energy by using the electrode of the IBC solar cell, has compact structure, can be integrally arranged on the backpack, and is convenient to install.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural view of a backpack according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a power generation mechanism according to an embodiment of the present invention;
FIG. 3 illustrates the shape of a friction plate and an IBC solar cell according to an embodiment of the invention;
FIG. 4 is a schematic illustration of a friction plate in a position on an IBC solar cell in accordance with an embodiment of the present invention.
Wherein the content of the first and second substances,
1. a backpack body; 10. a main body; 11. a harness; 2. a power generation mechanism; 20. an IBC solar cell; 201. a first electrode; 202. a second electrode; 203. a first polarization part; 204. a second polarization part; 21. a friction plate; 211. a gap; 22. a first connection portion; 23. a second connecting portion; 24. an insulation reinforcing plate; 25. an upper frame; 26. a lower frame; 27. a spring; 28. a panel; 29. packaging materials; 3. sunlight.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As used herein, the terms "comprises" and "comprising" are intended to be inclusive and mean that there may be additional steps or elements other than the listed steps or elements. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.
Referring to fig. 1, the backpack of the present embodiment includes a backpack body 1 and a power generation mechanism 2 provided on the backpack body 1. The backpack body 1 comprises a main body 10 for forming an accommodating space and a strap 11 for attaching the main body 10 to the body of a user, and the power generation mechanism 2 is arranged on one side of the main body 10 far away from the body of the user. Specifically, main part 10 has the back part that is close to user's health and can contact each other, apart from user's health far away and towards the anter of outside, and connect the lateral part between back part and anter, and power generation mechanism 2 locates on the anter of main part 10, and the back part can carry out some special designs according to human engineering usually, and this embodiment can effectively avoid changing the back part of main part 10 to can not influence the use comfort of knapsack.
Referring to fig. 2, the power generation mechanism 2 includes an IBC solar cell 20, the IBC solar cell 20 having a first electrode 201 and a second electrode 202 on a back surface thereof (specifically, a back surface of the IBC solar cell), the first electrode 201 and the second electrode 202 being disposed above and below each other. The first electrode 201 and the second electrode 202 are respectively multiple and arranged in a staggered manner to form an interdigital arrangement. The first electrode 201 and the second electrode 202 are insulated from each other.
The power generation mechanism 2 further includes a friction plate 21 that is in contact with the back surface of the IBC solar cell 20 and is capable of moving up and down with respect to the IBC solar cell 20, the friction plate 21 being made of an insulating material having a larger electron capacity than the first electrode 201 and the second electrode 202. The insulating material adopted in the embodiment is a material with the triboelectric charge density of less than-80 muCm-2For specific examples of insulating materials of (2) can be found in the Quantifying of the said tribonic series, Ying Zhang, Litong Guo, Peihong Wang, Xu He, Guozhang Dai, Haiwu Zheng, Chaoyu Chen, Aurelia Chi Wang, Cheng Xu and Zhong Lin Wang et al, Nature Communication published in the article "Quantifying the said tribonic series". Specifically, the selected insulating material is one or more of Polydimethylsiloxane (PDMS), Polytetrafluoroethylene (PTFE) or perfluoroethylene propylene copolymer (FEP).
As shown in fig. 2 to 4, the number of the friction plates 21 is multiple and the friction plates are arranged at intervals up and down, the orthographic projection of each friction plate 21 on the back surface of the IBC solar cell 20 is covered by the orthographic projection of the first electrode 201 or the second electrode 202 or coincides with the orthographic projection of the first electrode 201 or the second electrode 202, respectively, and the orthographic projection of the gap 211 between two adjacent friction plates 21 on the back surface of the IBC solar cell 20 is covered by the orthographic projection of the first electrode 201 or the second electrode 202 or coincides with the orthographic projection of the first electrode 201 or the second electrode 202, respectively. Further, the friction plates 21 have the same shape and size, the gaps 211 between all the friction plates 21 have the same shape and size, and the friction plates 21, the gaps 211, the first electrodes 201, and the second electrodes 202 have the same shape and size.
The power generation mechanism 2 has at least a first state in which the friction plate 21 is in contact with the first electrode 201 and separated from the second electrode 202; in the second state, the friction plate 21 and the second electrode 202 are in contact and separated from the first electrode 201. Wherein, when the power generation mechanism 2 is in the first state, each friction plate 21 covers one of the first electrodes 201, and the second electrode 202 between the covered first electrodes 201 is opposed to the gap 211; when the power generation mechanism 2 is in the second state, each friction plate 21 covers one second electrode 202, and the first electrode 201 between the covered second electrodes 202 is opposed to the gap 211. When the power generation mechanism 2 is in the first state, the friction plate 21 just completely covers the first electrode 201 without contacting the second electrode 202; when the power generation mechanism 2 is in the second state, the friction plate 21 just completely covers the second electrode 202 without contacting the first electrode 201.
Referring to fig. 3, the IBC solar cell 20 has a first polarization portion 203 and a second polarization portion 204 on the back surface thereof, the left end of each first electrode 201 is in contact with the first polarization portion 203, and the right end of each second electrode 202 is in contact with the second polarization portion 204; the left ends of the friction plates 21 are connected by a first connecting portion 22, and the right ends of the friction plates 21 are connected by a second connecting portion 23. The friction plate 21 is provided integrally with the first connecting portion 22 and the second connecting portion 23 to move synchronously. The first connection portion 22 and the first polarization portion 203 are disposed opposite to each other with a gap 211, and the second connection portion 23 and the second polarization portion 204 are disposed opposite to each other with a gap 211. Preferably, the length of the friction plates 21 is similar to the length of the first electrode 201 and the length of the second electrode 202, the width of the friction plates 21, the width of the gap 211 between the friction plates 21, the width of the first electrode 201 and the width of the second electrode 202 are similar, and the number of the friction plates 21 is less than half of the number of the first electrode 201 or the second electrode 202. In the present embodiment, three friction plates 21 are connected between the first connecting portion 22 and the second connecting portion 23, and two gaps 211 are formed between the three friction plates 21; in the first state, the three friction plates 21 respectively cover the three first electrodes 201, and the two second electrodes 202 between the covered three first electrodes 201 are aligned with the two gaps 211 so as not to contact the friction plates 21; similarly, in the second state, the three friction plates 21 respectively cover the three second electrodes 202, and the two first electrodes 201 between the covered three second electrodes 202 are aligned with the two gaps 211 so as not to contact the friction plates 21.
The power generation mechanism 2 further includes an insulation reinforcement plate 24, and the friction sheet 21 is coated on a side surface of the insulation reinforcement plate 24 opposite to the IBC solar cell 20. The insulating reinforcing plate is made of an acrylic material and has good insulating property. Specifically, the above-described friction plate 21 may be formed by pattern-coating the above-described electrically strong insulating material on one side surface of the insulation reinforcement plate 24 or attaching a patterned insulating material film made of an electrically strong insulating material. Preferably, the insulation reinforcing plate 24 is formed in the same shape as the friction plate 21 after machining.
The power generation mechanism 2 further comprises an upper frame 25 and a lower frame 26, the IBC solar cell 20 is fixedly connected between the upper frame 25 and the lower frame 26, and the friction plate 21 is connected between the upper frame 25 and the lower frame 26 in a vertically movable manner. Elastic members are provided between the friction plate 21 and the upper and lower frames 25 and 26. Specifically, in the present embodiment, the elastic member is a spring 27, and the number of the elastic member is four, wherein two springs 27 are connected between the insulating reinforcing plate 24 and the upper frame 25, the other two springs 27 are connected between the insulating reinforcing plate 24 and the lower frame 26, and the friction plate 21 is covered on the insulating reinforcing plate 24 so as to be connected between the side frame and the lower frame 26 by the four springs 27 in a manner of being capable of moving up and down.
The power generation mechanism 2 further includes a panel 28 and an encapsulant 29 disposed between the panel 28 and the front surface of the IBC solar cell 20, wherein the panel 28 is made of glass or transparent polymer, and the encapsulant 29 is made of ethylene-vinyl acetate copolymer (EVA), polyethylene octene co-elastomer (POE), or polyvinyl butyral (PVB) having high permeability. The panel 28 and the encapsulant are connected between the upper frame 25 and the lower frame 26, respectively, the encapsulant 29 is disposed on the front side of the IBC solar cell, and the panel 28 is disposed on the front side of the encapsulant 29.
Referring to fig. 3 and 4, the backpack works according to the following principle and process:
in the presence of illumination, when the front side of the IBC solar cell 20 faces sunlight, sunlight is irradiated to the front side of the IBC solar cell 20 through the panel 28 and the encapsulant 29, and the solar energy is absorbed by the IBC solar cell 20, converted into electric energy, and externally output through the first electrode 201 and the second electrode 202.
When a user carries the backpack and starts to move, the power generation mechanism 2 has a first state and a second state, in the first state, the friction plate 21 is in contact with the first electrode 201 and is separated from the second electrode 202, the orthographic projection of the friction plate 21 on the back surface of the solar cell just completely covers the first electrode 201, and the orthographic projection of the gap 211 between the friction plates 21 on the back surface of the solar cell is coincident with the orthographic projection of the second electrode 202; in the second state, the friction plate 21 and the second electrode 202 are in contact and separated from the first electrode 201, the orthographic projection of the friction plate 21 on the back surface of the solar cell just completely covers the second electrode 202, and the orthographic projection of the gap 211 between the friction plates 21 on the back surface of the solar cell is coincident with the orthographic projection of the first electrode 201. In the process of switching the power generation mechanism 2 between the first state and the second state, the insulation-reinforcing plate 24 and the friction plate 21 covering it are in contact with the first electrode 201 and the second electrode 202 and rub, electrons are transferred from the first electrode 201 and the second electrode 202 to the friction plate 21 having a strong electron-obtaining ability, and static charges are accumulated on the surface of the friction plate 21. The power generation mechanism 2 repeats the above process continuously, a large amount of static charges are accumulated on the friction plate 21, and the static charges perform alternate static induction on the first electrode 201 and the second electrode 202, so that a potential difference is generated between the first electrode 201 and the second electrode 202, and thus, electric energy is output outwards, and mechanical energy is converted into electric energy.
According to the backpack and the power generation mechanism 2 provided by the embodiment, the IBC solar cell 20 can perform photoelectric conversion to perform photovoltaic power generation, the power generation mechanism 2 is arranged on the backpack body 1, when a user wears the backpack to start moving, the friction plate 21 can be respectively in contact friction with the first electrode 201 and the second electrode 202, because the electronic capacity of the friction plate 21 is stronger than that of the first electrode 201 and the second electrode 202, a large amount of static charges are accumulated on the friction plate 21 in the process that the friction plate 21 is repeatedly in contact friction with the first electrode 201 and the second electrode 202, and the first electrode 201 and the second electrode 202 generate a potential difference through electrostatic induction to output electric energy to the outside. The backpack integrates the solar power generation function and the mechanical power generation function, can generate power in a form of converting mechanical energy into electric energy under the condition of insufficient illumination, more stably outputs the electric energy, and improves the power generation power and efficiency; the upper frame 25 and the lower frame 26 of the power generation mechanism 2 are fixed on the backpack base 12, so that the whole power generation mechanism 2 can be fixed on a backpack, the installation is convenient, the internal space of the backpack is not occupied, the normal use of the backpack is not influenced, and meanwhile, the design of the rear piece can ensure that the use feeling of a user is more comfortable when the user uses the backpack, and the backpack accords with the human engineering concept; the front surface of the IBC solar cell 20 is not provided with electrodes, which can make the appearance of the backpack more beautiful.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are preferred embodiments, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention.
Claims (10)
1. A backpack comprises a backpack body and a power generation mechanism arranged on the backpack body, and is characterized in that the power generation mechanism comprises an IBC solar cell, the IBC solar cell is provided with a first electrode and a second electrode which are positioned on the back surface of the IBC solar cell, and the first electrode and the second electrode are arranged up and down; the power generation mechanism further includes:
a friction plate contacting a back surface of the IBC solar cell and being movable up and down with respect to the IBC solar cell, the friction plate being made of an insulating material having an electron capacity greater than that of the first electrode and the second electrode;
wherein the power generation mechanism has at least a first state in which the friction plate is in contact with the first electrode and is separated from the second electrode, and a second state in which the friction plate is in contact with the first electrode; in the second state, the friction plate is in contact with the second electrode and is separated from the first electrode.
2. The backpack of claim 1, wherein the IBC solar cell comprises a plurality of the first electrodes spaced apart from one another and a plurality of the second electrodes spaced apart from one another, the first electrodes and the second electrodes being staggered, the friction plate covering one or more of the first electrodes when the power generation mechanism is in the first state; when the power generation mechanism is in the second state, the friction plate covers one or more of the second electrodes.
3. The backpack according to claim 2, wherein the number of the friction plates is plural and the friction plates are spaced from each other, an orthographic projection of each friction plate and a gap between two adjacent friction plates on the back surface of the IBC solar cell is covered by an orthographic projection of the first electrode or the second electrode or coincides with the orthographic projection of the first electrode or the second electrode, respectively, when the power generation mechanism is in the first state, each friction plate covers one first electrode, and the second electrode between the first electrodes is opposite to the gap; when the power generation mechanism is in the second state, each of the friction plates covers one of the second electrodes, the first electrode between the covered second electrodes being opposed to the gap; the number of the friction plates is less than half of the number of the first electrodes or the second electrodes.
4. The backpack of claim 3, wherein the IBC solar cell has a first polarization portion and a second polarization portion on the back surface thereof, wherein the left end of each of the first electrodes is in contact with the first polarization portion, and the right end of each of the second electrodes is in contact with the second polarization portion; the left ends of the friction plates are connected through a first connecting part, and the right ends of the friction plates are connected through a second connecting part; the first connection portion and the first polarization portion are disposed opposite to each other, and the second connection portion and the second polarization portion are disposed opposite to each other.
5. The backpack according to any one of claims 1 to 4, wherein the power generation mechanism further comprises an upper rim and a lower rim, the IBC solar cell is connected between the upper rim and the lower rim, and the friction plate is connected between the upper rim and the lower rim in a manner capable of moving up and down.
6. The backpack of claim 5, wherein a resilient member is disposed between the friction plate and the upper rim and/or the lower rim.
7. The backpack according to any of claims 1 to 4, wherein the insulating material has a triboelectric charge density of less than-80 μ Cm-2。
8. The backpack of claim 7, wherein the insulating material is selected from one or more of PDMS, PTFE, FEP.
9. The backpack according to any one of claims 1 to 4, wherein the power generation mechanism further comprises an insulation reinforcement plate, the friction plate being coated on a side surface of the insulation reinforcement plate opposite to the IBC solar cell; and/or the presence of a gas in the gas,
the power generation mechanism further comprises a panel and an encapsulating material positioned between the panel and the front side of the IBC solar cell; and/or the presence of a gas in the gas,
the backpack body comprises a main body for forming an accommodating space and braces for attaching the main body to the body of a user, and the power generation mechanism is arranged on one side of the main body far away from the body of the user.
10. An electricity generating mechanism, characterized in that the electricity generating mechanism is the electricity generating mechanism described in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181121.7A CN114142790A (en) | 2021-10-11 | 2021-10-11 | Knapsack and power generation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181121.7A CN114142790A (en) | 2021-10-11 | 2021-10-11 | Knapsack and power generation mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114142790A true CN114142790A (en) | 2022-03-04 |
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| CN202111181121.7A Pending CN114142790A (en) | 2021-10-11 | 2021-10-11 | Knapsack and power generation mechanism |
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