Solar charging bag

Abstract

The utility model relates to a solar charging bag which comprises a bag body, a solar cell panel is installed on the front face of the bag body, a charging panel is arranged in the bag body, and the charging panel is electrically connected with the solar cell panel. The input end of the voltage stabilizing circuit is electrically connected with the solar cell panel; the input end of the self-excited oscillation circuit is electrically connected with the output end of the voltage stabilizing circuit; the input end of the rectifying and voltage stabilizing circuit is electrically connected with the output end of the self-excited oscillation circuit, and the output end is provided with a charging interface; and one end of the voltage limiting circuit is electrically connected between the self-excited oscillation circuit and the voltage stabilizing circuit, and the other end is electrically connected with the charging interface. The solar cell panel is arranged on the front face of the bag body, solar energy can be converted into electric energy, then a mobile phone is charged through the charging panel, the problem that the mobile phone is charged in time outdoors can be solved, energy can be saved, carrying is convenient, extra burden cannot be added to a user, and the requirement for charging the mobile phone at any time when people go out is met; the practicability is high.

Description

Technical Field

[0001] The utility model relates to a bag, in particular to a solar charging bag. Background Art

[0002] Bags are daily necessities commonly used by people. They come in various forms, such as backpacks, arm bags, and hanging bags. However, most existing bags can only be used to store personal belongings when going out. When people go out, their mobile phones often run out of power, and they cannot find a place to charge them, which causes some trouble for people. In order to solve this problem, people usually carry a mobile power bank in their bags to charge their mobile phones in time. However, if the mobile power bank runs out of power, it still cannot fundamentally solve the problem of charging the mobile phone in time. Therefore, how to solve the problem of charging the mobile phone in time during outdoor activities is a problem that needs to be solved urgently. Utility Model Content

[0003] The utility model provides a solar charging bag, which can solve the problem of timely charging a mobile phone outdoors.

[0004] The utility model solves the above technical problems with the following technical solutions: a solar charging bag, comprising a bag body; a solar panel is installed on the front of the bag body, a charging plate is arranged in the bag body, and the charging plate is electrically connected to the solar panel;

[0005] The charging board is integrated with:

[0006] A voltage stabilizing circuit, an input end of which is electrically connected to the solar cell panel;

[0007] A self-excited oscillation circuit, the input end of which is electrically connected to the output end of the voltage stabilizing circuit;

[0008] A rectifier and voltage stabilizing circuit, the input end of which is electrically connected to the output end of the self-excited oscillation circuit, and the output end of which is provided with a charging interface;

[0009] A voltage limiting circuit has one end electrically connected between the self-excited oscillation circuit and the voltage stabilizing circuit, and the other end electrically connected to the charging interface.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the self-excited oscillation circuit comprises:

[0012] A resistor R1, one end of which is electrically connected to an interface at the output end of the voltage stabilizing circuit, and the other end of which is electrically connected to another interface at the output end of the voltage stabilizing circuit through the voltage limiting circuit;

[0013] A transistor VT1, a base of which is electrically connected to the other end of the resistor R1, and an emitter of which is electrically connected to another interface of the output end of the voltage stabilizing circuit;

[0014] A resistor R2, one end of which is electrically connected to the collector of the transistor VT1, and the other end of which is electrically connected to an interface of the output end of the voltage stabilizing circuit;

[0015] a resistor R3, one end of which is electrically connected to the other end of the resistor R1;

[0016] A capacitor C2, one end of which is electrically connected to the other end of the resistor R3;

[0017] The transformer T has two ends of its primary coil electrically connected to the two ends of the resistor R2, one end of its feedback coil electrically connected to the other end of the capacitor C2, the other end of its feedback coil electrically connected to another interface of the output end of the voltage stabilizing circuit, and two ends of its secondary coil electrically connected to the input end of the rectifier voltage stabilizing circuit.

[0018] Furthermore, the rectifying and voltage-stabilizing circuit includes a diode VD1, the positive electrode of the diode VD1 is electrically connected to one end of the secondary coil of the transformer T, and the negative electrode of the diode VD1 and the other end of the secondary coil of the transformer T are electrically connected to two ends of the charging interface respectively.

[0019] Furthermore, the voltage limiting circuit includes:

[0020] A transistor VT2, whose collector is electrically connected to the other end of the resistor R1, and whose emitter is electrically connected to another interface of the output end of the voltage stabilizing circuit;

[0021] A resistor R4, one end of which is electrically connected to the base of the transistor VT2, and the other end of which is electrically connected to another interface of the output end of the voltage stabilizing circuit;

[0022] A diode VD2, whose anode is electrically connected to the base of the transistor VT2;

[0023] a resistor R5, one end of which is electrically connected to the cathode of the diode VD2, and the other end of which is electrically connected to one end of the charging interface;

[0024] The resistor R6 has one end electrically connected to the cathode of the diode VD2 and the other end electrically connected to the other end of the charging port.

[0025] Furthermore, the charging board is also integrated with a first filter circuit; the first filter circuit includes a capacitor C1, and two ends of the capacitor C1 are respectively electrically connected to two interfaces of the output end of the voltage stabilizing circuit.

[0026] Furthermore, a second filtering circuit is integrated on the charging board; the second filtering circuit includes a capacitor C3, and two ends of the capacitor C3 are electrically connected to two ends of the charging interface respectively.

[0027] Furthermore, an arm strap and a shoulder strap are provided on the back of the bag body, and a hanging strap is provided on the top of the bag body.

[0028] Furthermore, a mobile power bank is provided in the package.

[0029] The beneficial effects of the utility model are as follows: the solar charging bag of the utility model is provided with a solar panel on the front of the bag body, which can convert solar energy into electrical energy, and then charge the mobile phone through the charging plate, which can solve the problem of timely charging the mobile phone outdoors, can not only save energy, but also is convenient to carry, will not add extra burden to the user, and can meet the needs of people to charge their mobile phones at any time when going out, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the appearance structure of a solar charging bag of the utility model;

[0031] Figure 2 This is a structural block diagram of a charging board in a solar charging bag of the utility model;

[0032] Figure 3 The utility model is a circuit diagram of a charging plate in a solar charging bag.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Bag body; 2. Armband; 3. Hanging strap; 4. Solar panel. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figure 1 As shown, a solar charging bag comprises a bag body 1, an armband 2 and a shoulder strap (not shown) are provided on the back of the bag body 1, a hanging strap 3 is provided on the top of the bag body 1, a solar panel 4 is installed on the front of the bag body 1, a charging board is provided in the bag body 1, and the charging board is electrically connected to the solar panel 1;

[0037] like Figure 2 As shown, the charging board is integrated with:

[0038] A voltage stabilizing circuit, an input end of which is electrically connected to the solar cell panel;

[0039] A self-excited oscillation circuit, the input end of which is electrically connected to the output end of the voltage stabilizing circuit;

[0040] A rectifier and voltage stabilizing circuit, the input end of which is electrically connected to the output end of the self-excited oscillation circuit, and the output end of which is provided with a charging interface;

[0041] A voltage limiting circuit has one end electrically connected between the self-excited oscillation circuit and the voltage stabilizing circuit, and the other end electrically connected to the charging interface.

[0042] The utility model discloses a solar charging bag with a small size and convenient to carry. It has the functions of an arm bag, a backpack and a hanging bag. The solar cell generates electricity to charge a mobile phone at any time during the day. The bag can be used as an arm bag during outdoor sports and as a backpack or hanging bag when going out, thus meeting the needs of people to charge their mobile phones at any time when going out.

[0043] In this specific embodiment, Figure 3 As shown, the self-excited oscillation circuit includes:

[0044] A resistor R1, one end of which is electrically connected to an interface at the output end of the voltage stabilizing circuit, and the other end of which is electrically connected to another interface at the output end of the voltage stabilizing circuit through the voltage limiting circuit;

[0045] A transistor VT1, a base of which is electrically connected to the other end of the resistor R1, and an emitter of which is electrically connected to another interface of the output end of the voltage stabilizing circuit;

[0046] A resistor R2, one end of which is electrically connected to the collector of the transistor VT1, and the other end of which is electrically connected to an interface of the output end of the voltage stabilizing circuit;

[0047] a resistor R3, one end of which is electrically connected to the other end of the resistor R1;

[0048] A capacitor C2, one end of which is electrically connected to the other end of the resistor R3;

[0049] The transformer T has two ends of its primary coil electrically connected to the two ends of the resistor R2, one end of its feedback coil electrically connected to the other end of the capacitor C2, the other end of its feedback coil electrically connected to another interface of the output end of the voltage stabilizing circuit, and two ends of its secondary coil electrically connected to the input end of the rectifier voltage stabilizing circuit.

[0050] The rectifying and voltage-stabilizing circuit includes a diode VD1, the positive electrode of the diode VD1 is electrically connected to one end of the secondary coil of the transformer T, and the negative electrode of the diode VD1 and the other end of the secondary coil of the transformer T are electrically connected to two ends of the charging interface respectively.

[0051] The voltage limiting circuit comprises:

[0052] A transistor VT2, whose collector is electrically connected to the other end of the resistor R1, and whose emitter is electrically connected to another interface of the output end of the voltage stabilizing circuit;

[0053] A resistor R4, one end of which is electrically connected to the base of the transistor VT2, and the other end of which is electrically connected to another interface of the output end of the voltage stabilizing circuit;

[0054] A diode VD2, whose anode is electrically connected to the base of the transistor VT2;

[0055] a resistor R5, one end of which is electrically connected to the cathode of the diode VD2, and the other end of which is electrically connected to one end of the charging interface;

[0056] The resistor R6 has one end electrically connected to the cathode of the diode VD2 and the other end electrically connected to the other end of the charging port.

[0057] The charging board is also integrated with a first filter circuit; the first filter circuit includes a capacitor C1, and two ends of the capacitor C1 are electrically connected to two interfaces of the output end of the voltage stabilizing circuit respectively.

[0058] The charging board is also integrated with a second filter circuit; the second filter circuit includes a capacitor C3, and two ends of the capacitor C3 are electrically connected to two ends of the charging interface respectively.

[0059] In the charging board of a solar charging bag of the utility model, after the solar panel converts solar energy into electric energy, the current flows to the base of the transistor VT1 through the resistor R1, so that the transistor VT1 is turned on. After the transistor VT1 is turned on, the primary coil Np of the transformer T is added with the input DC voltage, and the collector current Ic of the transistor VT1 increases linearly in the primary coil Np. The feedback coil Nb generates an induced voltage, so that the transistor VT1 obtains a positive feedback voltage with a positive base and a negative emitter. This voltage is injected into the base current of the transistor VT1 through the capacitor C2 and the resistor R3, so that the collector current of the transistor VT1 is further increased. The positive feedback generates an avalanche process, so that the transistor VT1 is saturated and turned on. During the saturation conduction period of the transistor VT1, the transistor T1 stores magnetic energy through the primary coil Np. At the same time, the induced voltage charges the capacitor C2. As the charging voltage of the capacitor C2 increases, the base potential of the transistor VT1 gradually decreases. When the base current change of the transistor VT1 cannot satisfy its continued saturation, the transistor VT1 exits the saturation region and enters the amplification region. After the transistor VT1 enters the amplification state, its collector current decreases from the maximum value before the amplification state, and an induced voltage is generated in the feedback coil Nb, which reduces the base current of the transistor VT1, and its collector current decreases accordingly. The positive feedback once again undergoes an avalanche process, and the transistor VT1 is quickly cut off. After the transistor VT1 is cut off, the energy stored in the transformer T is provided to the load. The voltage generated by the secondary coil Ns is rectified by the diode VD1 and filtered by the capacitor C3 to obtain a DC voltage to charge the mobile phone battery. When the transistor VT1 is cut off, the DC power supply input voltage and the voltage induced by the feedback coil Nb reversely charge the capacitor C2 through the resistors R1 and R3, gradually increasing the base potential of the transistor VT1, causing it to turn on again and flip again to reach the saturation state. The circuit repeats the oscillation.

[0060] The voltage limiting circuit is used to protect the battery from overcharging. Here, we take a 3.6V mobile phone battery as an example, and its charging limit voltage is 4.2V. During the battery charging process, the battery voltage gradually rises. When the charging voltage is greater than 4.2V, the diode VD2 starts to conduct after the voltage is divided by the resistors R5 and R6, making the transistor VT2 conduct. The shunt effect of the transistor VT2 reduces the base current of the transistor VT1, thereby reducing the collector current Ic of the transistor VT1, achieving the effect of limiting the output voltage. At this time, the circuit stops charging the battery with a large current and uses a small current to maintain the battery voltage at 4.2V.

[0061] In this embodiment, a mobile power bank is arranged in the bag. When the mobile phone does not need to be charged, the charging bag of the utility model can be used to charge the mobile power bank, store energy, improve energy utilization, and facilitate subsequent use of the mobile power bank to charge the mobile phone.

[0062] The utility model discloses a solar charging bag. A solar panel is arranged on the front of the bag body, which can convert solar energy into electrical energy, and then charge the mobile phone through the charging plate, so as to solve the problem of timely charging the mobile phone outdoors. It can not only save energy but also be convenient to carry without adding extra burden to the user, thus meeting the needs of people to charge their mobile phones at any time when going out, and has strong practicality.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar charging pack, characterized in that: It comprises a bag body; a solar panel is installed on the front of the bag body, a charging plate is arranged inside the bag body, and the charging plate is electrically connected to the solar panel; The charging board is integrated with: A voltage stabilizing circuit, an input end of which is electrically connected to the solar cell panel; A self-excited oscillation circuit, the input end of which is electrically connected to the output end of the voltage stabilizing circuit; A rectifier and voltage stabilizing circuit, the input end of which is electrically connected to the output end of the self-excited oscillation circuit, and the output end of which is provided with a charging interface; A voltage limiting circuit has one end electrically connected between the self-excited oscillation circuit and the voltage stabilizing circuit, and the other end electrically connected to the charging interface.

2. The solar charging bag according to claim 1, characterized in that: The self-excited oscillation circuit comprises: A resistor R1, one end of which is electrically connected to an interface at the output end of the voltage stabilizing circuit, and the other end of which is electrically connected to another interface at the output end of the voltage stabilizing circuit through the voltage limiting circuit; A transistor VT1, a base of which is electrically connected to the other end of the resistor R1, and an emitter of which is electrically connected to another interface of the output end of the voltage stabilizing circuit; A resistor R2, one end of which is electrically connected to the collector of the transistor VT1, and the other end of which is electrically connected to an interface of the output end of the voltage stabilizing circuit; a resistor R3, one end of which is electrically connected to the other end of the resistor R1; A capacitor C2, one end of which is electrically connected to the other end of the resistor R3; The transformer T has two ends of its primary coil electrically connected to the two ends of the resistor R2, one end of its feedback coil electrically connected to the other end of the capacitor C2, the other end of its feedback coil electrically connected to another interface of the output end of the voltage stabilizing circuit, and two ends of its secondary coil electrically connected to the input end of the rectifier voltage stabilizing circuit.

3. The solar charging bag according to claim 2, characterized in that: The rectifying and voltage-stabilizing circuit includes a diode VD1, the positive electrode of the diode VD1 is electrically connected to one end of the secondary coil of the transformer T, and the negative electrode of the diode VD1 and the other end of the secondary coil of the transformer T are electrically connected to two ends of the charging interface respectively.

4. The solar charging bag according to claim 3, characterized in that: The voltage limiting circuit comprises: A transistor VT2, whose collector is electrically connected to the other end of the resistor R1, and whose emitter is electrically connected to another interface of the output end of the voltage stabilizing circuit; A resistor R4, one end of which is electrically connected to the base of the transistor VT2, and the other end of which is electrically connected to another interface of the output end of the voltage stabilizing circuit; A diode VD2, whose anode is electrically connected to the base of the transistor VT2; a resistor R5, one end of which is electrically connected to the cathode of the diode VD2, and the other end of which is electrically connected to one end of the charging interface; The resistor R6 has one end electrically connected to the cathode of the diode VD2 and the other end electrically connected to the other end of the charging port.

5. The solar charging bag according to claim 1, characterized in that: The charging board is also integrated with a first filter circuit; the first filter circuit includes a capacitor C1, and two ends of the capacitor C1 are electrically connected to two interfaces of the output end of the voltage stabilizing circuit respectively.

6. The solar charging bag according to claim 1, characterized in that: The charging board is also integrated with a second filter circuit; the second filter circuit includes a capacitor C3, and two ends of the capacitor C3 are electrically connected to two ends of the charging interface respectively.

7. The solar charging bag according to claim 1, characterized in that: An arm strap and a shoulder strap are arranged on the back of the bag body, and a hanging strap is arranged on the top of the bag body.

8. The solar charging bag according to claim 1, characterized in that: A mobile power bank is arranged in the bag.

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