Solar charger
Technical Field
The utility model relates to a but not limited to the semiconductor technology field especially relates to a solar charger.
Background
At present, solar chargers in the market generally comprise a solar photovoltaic assembly and a voltage output unit, solar radiation is converted into electric energy through the solar photovoltaic assembly, and then stable direct current or alternating current output is formed through a current conversion device to supply power to various loads. For example, chinese patent document CN103997090A discloses a foldable solar mobile power supply, which includes a solar cell panel, a rotating shaft, a housing, a storage battery, a photovoltaic charging controller, and an AC power socket, wherein the solar cell panel is movably connected to the housing through the rotating shaft, the solar cell panel is electrically connected to the photovoltaic charging controller and the storage battery in sequence, the storage battery and the photovoltaic charging controller are installed in the housing, and the AC power socket is located on a side wall of the housing. The solar cell panel can rotate through the rotating shaft, and when solar energy is needed to be used for charging, the solar cell panel is rotated to the outer side of the shell; when the normal use that finishes charges, can rotate solar cell panel to the inside dead slot of casing in, effectively avoid solar cell panel's damage.
The solar mobile power supply comprises a solar panel, a rotating shaft, a shell, a storage battery, a photovoltaic charging controller and an AC power socket, and has the problems of complex structure, high manufacturing cost and large volume; in addition, the conversion efficiency of the solar panel for converting solar energy into electric energy is low, the solar photovoltaic panel is mostly non-flexible or poor in flexibility, and can not be folded and curled, or the solar cell is easily damaged after being folded and curled, and the solar photovoltaic panel is heavy and is inconvenient to carry due to the above reasons.
SUMMERY OF THE UTILITY MODEL
For this, the utility model discloses complicated, bulky to prior art solar charger structure, can not fold and curl or fold, damage solar cell easily after curling, lead to inconvenient hand-carrying and the problem that solar energy conversion electric energy efficiency is low, provide a simple structure, small, collapsible, curl and solar energy conversion electric energy efficient solar charger, convenience of customers carries.
In order to solve the technical problem, the utility model provides a solar charger, include:
the charger body consists of a first flexible protective film layer;
a solar thin film battery assembly disposed on an inner side surface of the unfolded first flexible protective film layer;
the electric energy output device is used for outputting the electric energy converted by the solar thin film battery component;
the lead is used for connecting the solar thin film battery component and the electric energy output device;
and the second flexible protective film layer is used for at least covering the upper surface of the solar thin film battery component and is fixed on the first flexible protective film layer, and the second flexible protective film layer is a transparent flexible protective film.
Further, the solar charger further comprises:
a window is formed in the middle of the third flexible protective film layer so as to expose the upper surface of the solar thin film battery component;
the non-window part of the third flexible protective film layer is fixed on the first flexible protective film layer, and the second flexible protective film layer covers the upper surface of the solar thin-film battery component and is fixed on the third flexible protective film layer. Or,
and adhesively fixing the part of the second flexible protective film layer, which exceeds the size of the upper surface of the solar thin film battery assembly, between the third flexible protective film layer and the first flexible protective film layer.
Further, the first flexible protective film layer sequentially comprises an adhesive layer and a lower surface layer from top to bottom; the second flexible protective film layer sequentially comprises an upper surface layer and a bonding layer from top to bottom, and the upper surface layer of the second flexible protective film layer is fixed on the lower surface layer of the first flexible protective film layer through the bonding layer or the bonding layer of the first flexible protective film layer.
Further, the first flexible protective film layer sequentially comprises an adhesive layer and a lower surface layer from top to bottom; the second flexible protective film layer sequentially comprises an upper surface layer and a bonding layer from top to bottom;
the third flexible protective film layer is fixed on the lower surface layer of the first flexible protective film layer through the bonding layer of the first flexible protective film layer, and the second flexible protective film layer is fixed on the solar thin-film battery component and the third flexible protective film layer through the bonding layer;
or the second flexible protective film layer is fixed on the solar thin-film battery component and the lower surface layer of the first flexible protective film layer through the bonding layer; the part of the second flexible protective film layer exceeding the size of the upper surface of the solar thin film battery module is fixed between the third flexible protective film layer and the first flexible protective film layer.
Further, the upper surface layer of the second flexible protective film layer is an ETFE layer or an ECTFE layer; the lower surface layer of the first flexible protection film layer and the third flexible protection film layer are waterproof cloth; the bonding layer of the first flexible protection film layer and the bonding layer of the second flexible protection film layer are EVA layers, and the upper surface layer of the second flexible protection film layer is a multi-point concave surface layer.
Further, the thickness range of the upper surface layer of the second flexible protective film layer is 0.01-0.2mm, and the thickness range of the bonding layer of the second flexible protective film layer is 0.2-0.3 mm; the thickness of the bonding layer of the first flexible protective film layer is 0.2-0.3mm, and the thickness range of the lower surface layer of the first flexible protective film layer is 0.1-0.2 mm; the thickness range of the third flexible protective film layer is 0.1-0.2 mm.
Furthermore, the electric energy output device comprises a junction box, wherein an integrated circuit board is arranged in the junction box and is used for controlling the electric energy converted by the solar thin film battery pack to ensure that the output voltage meets the use requirement of the load; and at least one USB interface for connecting a load is arranged on the junction box.
Furthermore, at least one display lamp for displaying the illumination intensity is arranged on the integrated circuit board.
Further, the lead is located between the first flexible protective film layer and the third flexible protective film layer, and penetrates through the bonding layer and the lower surface layer of the first flexible protective film layer to be connected to the electric energy output device.
Further, the solar thin film battery assembly comprises at least one CIGS solar thin film battery, and the CIGS solar thin film battery sequentially comprises a water blocking film, a CIGS solar thin film battery chip and a water blocking film from top to bottom, or sequentially comprises the water blocking film, an adhesive layer, the CIGS solar thin film battery chip, the adhesive layer and the water blocking film from top to bottom.
Furthermore, the charger body is provided with at least one through hole for hanging.
Compared with the prior art, the technical scheme of the utility model have following advantage:
1. the solar energy charger of the utility model adopts the solar thin film battery component, so that the efficiency of converting solar energy into electric energy is high, the weight is light, and the solar energy charger is beneficial to the carry-on of users; the charger body is composed of a first flexible protection film layer, a second flexible protection film layer and a third flexible protection film layer are also flexible, and the solar thin film battery pack is also flexible, so that the solar charger of the utility model can be folded and curled, and a user can store the charger into a smaller size and carry the charger with the user; in addition, through the setting of first flexible protection rete, the flexible protection rete of second and the flexible protection rete of third, can obstruct harm to solar energy film battery pack such as moisture, high temperature, ultraviolet ray to and avoided damage in the aspect of machinery, chemistry, guaranteed the utility model discloses a reliability and stability of solar charger work.
2. The utility model discloses a solar charger sets up at least one display lamp that can show illumination intensity on integrated circuit board, and the display lamp plays indicative function for guide the user to use.
3. The utility model discloses a solar charger through set up the through-hole on charger body for the user can conveniently be hung solar charger to the knapsack, carry the bag when going out, has further made things convenient for the user to carry.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.
Fig. 1 is a front view of a solar charger according to an embodiment of the present invention after being unfolded;
fig. 2 is a back view of the solar charger according to the embodiment of the present invention after being unfolded;
fig. 3 is a longitudinal sectional view of the charger body including the solar thin film battery module part of the first embodiment;
fig. 4 is a longitudinal sectional view of a charger body including a solar thin film battery module portion of the second embodiment.
The reference numbers in the figures denote: 1-a charger body; 11-a through hole; 2-solar thin film battery components; 201-water resistance film; 202-solar thin film cell chip; 203-water resistance film; 32-a second flexible protective film layer; 321-an upper surface layer; 322-a tie layer; 31-a first flexible protective film layer; 311-a bonding layer; 312-lower skin layer; 4-a junction box; 41-USB interface; 5-a wire; 3-a third flexible protective film layer; 201 a-adhesive layer, 203 a-adhesive layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Fig. 1 shows the main technical content of the present embodiment, and the present embodiment provides a solar charger, including: the charger comprises a charger body 1, a solar thin film battery component 2 for converting solar energy into electric energy, an electric energy output device 4 for outputting the electric energy converted by the solar thin film battery component 2 and a lead 5.
Referring to fig. 3 or 4, the charger body 1 is composed of a foldable, curled first flexible protective film layer 31. The charger body 1 may be shaped as a rectangle, a square, a circle, or other regular shape or irregular shape, the application does not specifically limit the specific shape of the charger body 1, and in the present embodiment, the charger body 1 is a rectangle;
the first flexible protective film 31 sequentially comprises an adhesive layer 311 and a lower surface layer 312 from top to bottom; the adhesive layer 311 is a hot melt adhesive layer, such as an EVA layer, and the lower surface layer 312 is an opaque and flexible waterproof material, such as a waterproof cloth, and may also be a transparent, waterproof, scratch-resistant, friction-resistant, weather-resistant material, such as an ETFE layer, or ECTFE or other materials that can meet the performance requirement.
The solar thin film cell module 2 is composed of one or more CIGS solar thin film cells, wherein the CIGS solar thin film cells are connected with each other by a lead 5 and can be connected in series and/or in parallel as required. Referring to fig. 3, each CIGS solar thin film cell sequentially includes a water blocking film 201, a CIGS solar thin film cell chip 202, and a water blocking film 203 from top to bottom, and the CIGS solar thin film cell chip 202 and the water blocking films 201 and 203 are packaged into an integrated structure.
Alternatively, as another embodiment, as shown in fig. 4, the CIGS solar thin film cell includes, from top to bottom, a water blocking film 201, an adhesive layer 201a, a CIGS solar thin film cell chip 202, an adhesive layer 203a, and a water blocking film 203, and the CIGS solar thin film cell chip 202 is packaged with the water blocking film 201, the adhesive layer 201a, the adhesive layer 203a, and the water blocking film 203 as an integral structure. The specific structure of each CIGS solar thin film cell depends on the case of the CIGS solar thin film cell chip.
The CIGS solar thin film cell is flexible, high in conversion efficiency of solar energy into electric energy and light in weight. The CIGS solar thin-film cell chip 202 is good in flexibility and can be folded and curled, the CIGS solar thin-film cell chip cannot be damaged after being folded or curled, and the water blocking films 201 and 203 arranged above and below the CIGS solar thin-film cell chip 202 have the functions of water resistance and insulation. The water-blocking film can be made of hot melt adhesive and has viscosity. In this embodiment, the CIGS solar thin film cell may be rectangular or square in shape. The solar thin film battery module 2 is fixed to the middle position of the unfolded first flexible protective film 31 by the adhesive layer 311 of the first flexible protective film 31.
After the solar thin-film battery component 2 is fixed at the middle part of the unfolded first flexible protective film layer, a third flexible protective film layer 3 can be covered, a window is formed in the middle of the third flexible protective film layer, and the window is ideally the same as the area of the solar thin-film battery component 2 in size, so that the solar thin-film battery component 2 can be well exposed, and electric energy can be generated when the sun irradiates the solar thin-film battery component. If the area of the window is larger than that of the solar thin-film battery component 2, a gap is formed between the third flexible protective film layer 3 and the solar thin-film battery component 2, so that the appearance is influenced; if the window is smaller than the area of the solar thin film battery assembly 2, the third flexible protective film layer 3 can shield the solar thin film battery assembly 2, the power generation efficiency is affected, and the power generation amount is reduced. Wherein the third flexible protection film layer 3 is opaque and can adopt waterproof cloth.
A second flexible protective film layer 32 is further arranged on the solar thin-film battery component 2 and the third flexible protective film layer 3, the second flexible protective film layer is a transparent flexible protective film layer, and the second flexible protective film layer 32 sequentially comprises an upper surface layer 321 and a bonding layer 322 from top to bottom; the upper surface layer 321 is preferably a transparent, waterproof, scratch-resistant, friction-resistant, and weather-resistant material, such as an ETFE layer, and ECTFE or another transparent, waterproof, scratch-resistant, friction-resistant, and weather-resistant material may also be used; the adhesive layer 322 is preferably a hot melt adhesive layer, such as an EVA layer. The upper surface of the second flexible protection layer adopts a multi-point concave surface structure so as to reduce the reflection of sunlight and improve the efficiency of converting solar energy into electric energy.
Optionally, the area of the second flexible protective film layer 32 is at least larger than the surface area of the solar thin film battery assembly 2, so as to be sufficiently bonded with the third flexible protective film layer 3, thereby achieving waterproof, scratch-resistant, friction-resistant effects on the solar thin film battery assembly and its electrical connection components, such as junction box, lead wire, etc. The area of the second flexible protective film layer 32 may also be substantially the same as the surface area of the first flexible protective layer. Preferably, the second flexible protective film layer can extend to wrap and encapsulate the periphery of the charger body, so that the sealing performance of the solar charger is enhanced.
As an alternative embodiment, instead of the third flexible protective film layer, the second flexible protective film layer 32 may be directly covered on the solar thin film battery assembly 2, and the second flexible protective film layer 32 is directly fixed on the lower surface layer 312 of the first flexible protective layer 31 through the adhesive layer 322; or after the second flexible protective film layer 32 is fixed on the lower surface layer 312 of the first flexible protective film layer 31 by the bonding layer 322, covering the third flexible protective film layer on the second flexible protective film layer 32; with the latter, the area of the second flexible protective film layer is slightly larger than the surface area of the solar thin film battery assembly 2, and the part of the second flexible protective film layer 32 exceeding the surface area of the solar thin film battery assembly 2 can be fixed between the third flexible protective film layer 3 and the first flexible protective film layer 31 in a bonding manner; it is easy to understand that when the second flexible protection film layer 32 is fixed to the solar cell module 2 and the first flexible protection film layer 31 through an adhesive layer, the adhesive portion of the second flexible protection film layer 32 and the first flexible protection film layer 31 may be selected from one of the adhesive layer 322 or the adhesive layer 311, so as to avoid the adhesive layer being too thick.
Optionally, in the present embodiment, in order to improve the efficiency of converting solar energy into electric energy, the solar thin-film battery assembly 2 occupies most of the area of the charger body 1 after being unfolded, and preferably, the ratio of the occupied area is 0.6:1 to 0.8:1, but the present application is not limited thereto, and the ratio of the area of the solar thin-film battery assembly 2 occupied by the charger body 1 after being unfolded may be further adjusted according to different actual needs, for example, 0.5:1, 0.4: 1.
Optionally, the thickness of the upper surface layer 321 may be in a range of 0.01 to 0.2mm, and an excessively thick packaging process is difficult to implement, in this embodiment, the thickness of the upper surface layer is 0.05 mm; the thickness of the bonding layer can be in the range of 0.2-0.3mm, and if the thickness is too thin, the bonding performance is not good, and delamination is easy to occur; the desirable range of the thickness of the lower surface layer is 0.1-0.2mm, and the thickness of the third flexible protective film layer is 0.1-0.2 mm.
When the third flexible protective film layer 3 is used, the lead 5 is located between the third flexible protective film layer 3 and the first flexible protective film layer 31, and passes through the adhesive layer 311 and the lower surface layer 312 to be connected to the junction box.
If the third flexible protective film layer is not used, the lead 5 may be located between the second flexible protective film layer 32 and the first flexible protective film layer 31, and pass through the adhesive layer 311 and the lower surface layer 312 to be connected to the junction box.
Optionally, the wire 5 is preferably a tinned braided copper tape.
Through the setting of first, second and the flexible protective film layer of third, can separation moisture, high temperature, ultraviolet ray etc. to the harm of solar energy thin film battery subassembly 2 to and avoid machinery, the damage in the aspect of the chemistry, guarantee the reliability and the stability of this embodiment's solar charger work.
Optionally, the electric energy output device 4 is a junction box, and an integrated circuit board is arranged in the junction box and used for controlling the electric energy converted by the solar thin film battery assembly, so that the output voltage meets the use requirement of the load; the junction box is provided with at least one USB interface 41 for connecting a load, and is used for connecting the load. The load can be mobile equipment such as a mobile phone, a tablet computer, a notebook computer, an intelligent watch and a charging pack.
For convenience of use, at least one display lamp capable of displaying the illumination intensity is further arranged on the integrated circuit board in the embodiment, and the display lamp is preferably an LED display lamp. In this embodiment, the LED display lamp is configured to: when the illumination condition is poor, the LED display lamp displays red; when the illumination condition is good and the load can be directly charged, the LED display lamp displays green; when the solar charger is turned off or no power is supplied to the load, the LED display lamp is not on, indicating that no output is available. The display mode of the display lamp of the present application is not limited to the above mode, and the display mode and the display effect of the display lamp can be adjusted according to the actual needs of the user.
The solar charger is foldable, bendable and portable, and is light in weight and convenient to carry by a user.
In addition, the charger body 1 is provided with at least one through hole 11 for hanging, specifically, in the present embodiment, four through holes 11 are provided, and are respectively provided at four corners of the charger body 1, and through the arrangement of the through holes 11, a user can conveniently hang the portable solar charger provided by the present embodiment to a bag carried by the user, such as a backpack, a satchel, and the like. Of course, the portable solar charger of the present embodiment can be hung on a fixing device at a position with good outdoor lighting conditions through the through hole 11.
Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.