CN204698061U - A kind of solar energy knapsack - Google Patents

Abstract

A new type of solar backpack. It has a light absorbing device, a lithium battery, and a charging device. The light-receiving device is composed of a flexible solar cell panel and its circuit. The flexible solar cell panel has a waterproof coating, which can convert solar energy into photogenerated current; the lithium battery can store the photogenerated current as electrical energy; the charging device can output the electrical energy to cell phone. The backpack is a new type of backpack that can use solar energy to generate electricity and wirelessly input the power into mobile digital devices such as mobile phones.

Description

A solar backpack

Technical field

The utility model belongs to new energy utilization technology and relates to a backpack for solar photovoltaic power generation.

Background technique

At present, the battery capacity of widely used digital equipment is about 2000mAh, the output voltage is 3.8V, the normal use time is relatively short, and there is no self-generating device, which will cause great inconvenience in the case of emergency use due to power failure.

Flexible amorphous silicon solar photovoltaic materials have been relatively mature. Flexible solar materials have bendable properties, and their photoelectric conversion efficiency is 15%. The power of sunlight per unit area is about 1.0×10 ³ w/m ² , but its application range It is not extensive enough, and more application fields should be developed.

Contents of the invention

In order to solve the power supply problem of mobile phones and other digital devices during outdoor activities, the utility model provides a backpack. This backpack is a new type of backpack that can generate electricity from solar energy and wirelessly input power to mobile digital devices such as mobile phones.

The technical solution adopted by the utility model is: replace the canvas material with a flexible solar battery on the outside of the ordinary backpack; install a wireless charging device at the electrode of the flexible solar battery; install a charging receiving terminal on mobile devices such as mobile phones .

The utility model is also characterized in that:

Among them, the solar power generation module installed on the backpack is composed of flexible solar panels and waterproof fabrics, and the strip-shaped flexible batteries are placed in rows with a distance of 1cm between them for easy folding.

Among them, the power transmission device is composed of an ultra-thin lithium battery and a charger; the flexible solar battery, the ultra-thin lithium battery, and the charger are connected by a series circuit.

Among them, the solar power generation module installed on the backpack is fixed by a lock, hung on the outer surface of the schoolbag, and can be disassembled at any time.

Among them, the solar power generation module mounted on the backpack has a power storage device.

Among them, the solar power generation module mounted on the backpack has a wireless charging coil.

Wherein, the solar power generation module mounted on the backpack has fixing devices such as cloth velcro.

The beneficial effect of the utility model is that the backpack can not only use solar energy to generate electricity, but also can input electric energy into digital devices such as mobile phones without data lines. Just point the backpack to the sun, and the backpack can enter the charging state. Power can be fed into the phone when needed. The problem of outdoor mobile phone charging has been solved.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is an overall view of the utility model receiving solar energy state (expanded state).

Fig. 2 is a schematic circuit diagram of the utility model.

Fig. 3 is a front view of the solar power generation module of the present invention.

Fig. 4 is a rear view of the solar power generation module of the present invention.

Fig. 5 is a schematic diagram of the charging state (folding state) of the mobile phone of the present invention.

In the figure 1. Flexible solar panel, 2. Power transmission device, 3. Wire, 4. Ultra-thin lithium battery, 5. Wireless charger/USB charger, 6. Switch, 7. Hanging buckle, 8. Wireless charging coil, 9. Cloth Velcro, 10. Mobile phone in charging state.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A solar backpack, including a light absorbing device, the light absorbing device is composed of a flexible solar battery (1) and its circuit (3), and the outer side of the battery is coated with a waterproof coating; the power transmission device (2), is charged by a lithium battery (4), The device (5) is composed of a wireless charging coil (8); the controller is composed of a switch (6).

In Figure (1), the flexible solar panels (1) are connected in series with each other through wires (3), and then connected to the power transmission device (2) through wires (3). Each solar panel (1) generates about 0.8 V photo-generated voltage, 7-9 flexible solar panels (1) can generate 5-7 V photo-generated voltage, considering the loss on the wire (3), output to the power transmission device (2) The road terminal voltage is about 5 V.

In Figure (2), the arrow (6) indicates the direction of the photogenerated current. The positive pole of the flexible solar panel (1) is connected to the positive pole of the power transmission device (2) through a wire (3); the power transmission device (2) includes a storage lithium battery (4) and a rechargeable battery (5), and the lithium battery (4) It is connected in series with the charger (5) through the wire (3); the negative pole of the power transmission device (2) is connected with the switch (6); the switch (6) is connected with the negative pole of the flexible solar battery panel (1) through the wire (3).

The solar charging module can be disassembled, as shown in Figure 3. When the user needs to collect solar energy, the user hangs it on the schoolbag through the buckle (7), and the flexible solar panel (1) faces the light source to collect solar energy and store electricity, and the electric energy is first stored in the lithium battery (4). When the user needs to charge the mobile phone, he disassembles the solar charging module, folds it as shown in Figure 5, places the mobile phone (10) in it, sticks the cloth button (9), and the battery passes through the wireless charging coil (8 ) to output power to the cell phone battery.

The area of the flexible solar panel (1) on the surface of the backpack is about 600cm ² , the power of sunlight per unit area is about 1.0×10 ³ W/m ² , the energy conversion efficiency of solar photovoltaic materials is about 15%, and the power transmission device (2) The output voltage of the battery is 5V, the capacity of the lithium battery (4) is about 6000mAh, and the lithium battery (4) can be fully charged in about 3.5 hours. A fully charged lithium battery (4) can fully charge 2-3 mobile phone batteries.

Claims (2)

1. a solar energy knapsack, comprises absorption means, it is characterized in that: be made up of removable flexible solar cell and circuit thereof, and strip flexible battery apportion is placed; Power transmitting device, by ultra-thin lithium cell (4), charger (5) is formed; Flexible solar battery (1), ultra-thin lithium cell (4), charger adopt series circuit to connect between (5).

2. a kind of solar energy knapsack according to claim 1, is characterized in that: when collecting solar energy, its solar recharging module hangs over knapsack surface by snap close; When charging the phone, its solar recharging module folds, and being covered in by mobile phone is wherein mobile phone charging.