Hand-operated power generation emergency mobile charging module

Abstract

This utility model relates to the field of emergency charging technology and discloses a hand-cranked emergency mobile charging module with good stability and convenience. It includes a power generation rectifier circuit (110), a DC-DC boost circuit (120), a power supply charging circuit (130), a power isolation circuit (140), a drive circuit (150), and a switch control circuit (160) for outputting voltage signals. The signal input terminal of the switch control circuit (160) is connected to the signal output terminal of the drive circuit (150) to receive level signals. The input level signals are used to control the working state of the switch control circuit (160) to control the working state of the lighting lamp.

Description

Technical Field

[0001] This utility model relates to the field of emergency charging technology, and more specifically, to a hand-cranked emergency mobile charging module. Background Technology

[0002] Currently, outdoor portable lighting fixtures are powered by dry cell batteries or lithium batteries. When the batteries run out of power, and are far from fixed power outlets or portable electronic devices, the batteries are depleted and cannot be replaced. This requires a backup power source or a designated charging location, or battery replacement. This makes them inconvenient to use outdoors or in special circumstances, and they cannot provide lighting in emergency situations or special locations, thus affecting the user's use and potentially seriously endangering the user's life. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a hand-cranked emergency mobile charging module that is more stable and convenient, addressing the shortcomings of existing technologies that are inconvenient to use outdoors and in special circumstances and cannot provide lighting in emergency situations or special locations.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a hand-cranked generator emergency mobile charging module, which has the following features: The power generation rectifier circuit is located at the front end of the charging module and is used to output voltage signals; The DC-DC boost circuit has its input terminal connected to the output terminal of the power generation rectifier circuit, and is used to receive the voltage signal and boost the input voltage signal. A power supply and charging circuit, one of its input terminals is connected to the output terminal of the DC-DC boost circuit, for receiving the boosted voltage signal to charge the battery assembly; A power isolation circuit, one of its input terminals being connected to the output terminal of the battery assembly, is used to receive the voltage signal output by the battery assembly; A driving circuit, whose power input terminal is connected to the output terminal of the power isolation circuit, is used to receive the voltage signal output by the power isolation circuit to trigger the driving circuit to output a level signal; A switch control circuit, whose power input terminal is connected to the output terminal of the power isolation circuit, is used to receive the voltage signal output by the power isolation circuit. The signal input terminal of the switch control circuit is connected to the signal output terminal of the drive circuit, and is used to receive the level signal. The input level signal is used to control the working state of the switch control circuit so as to control the working state of the lighting lamp.

[0005] In some embodiments, another input terminal of the power supply and charging circuit is connected to the output terminal of the USB interface to receive the voltage signal output by the USB interface in order to charge the battery assembly.

[0006] In some implementations, another input terminal of the power isolation circuit is connected to the output terminal of the USB interface to receive the voltage signal output by the USB interface.

[0007] In some embodiments, the power generation rectifier circuit includes a motor, a rectifier bridge, and a filter module. Rotating the motor converts energy into electrical energy through electromagnetic induction, thereby outputting the voltage signal. The input terminal of the rectifier bridge is connected to the output terminal of the motor, and is used to receive the voltage signal and rectify the input voltage signal. The input terminal of the filtering module is connected to the output terminal to receive the rectified voltage signal, filter the voltage signal, and then output it to the DC-DC boost circuit.

[0008] In some embodiments, the DC-DC boost circuit includes at least a first inductor, a first MOSFET, a fifth diode, a fourth capacitor, and a DC-DC controller. One end of the first inductor is connected to the output of the filter module. The other end of the first inductor is connected to the drain of the first MOSFET and the anode of the fifth diode, respectively. The gate of the first MOSFET is connected to the signal output terminal of the DC-DC controller. The power input terminal of the DC-DC controller and one end of the fourth capacitor are respectively connected to the cathode of the fifth diode. The cathode of the fifth diode is connected to one input terminal of the power supply and charging circuit. The source of the first MOS transistor and the other end of the fourth capacitor are connected to a common terminal. The DC-DC controller controls the on / off state of the first MOSFET, so that the input voltage signal is boosted twice through the first inductor, the first MOSFET, the fifth diode and the fourth capacitor to output a 5V voltage signal to the power supply and charging circuit.

[0009] In some embodiments, the power supply and charging circuit includes at least a seventh diode and a power manager. The anode of the seventh diode is connected to the cathode of the fifth diode. The cathode of the seventh diode is connected to the power supply terminal of the power manager through the sixth resistor. The power manager's charging terminal is connected to the positive terminal of the battery assembly to charge the battery assembly.

[0010] In some embodiments, the drive circuit includes at least a main controller and a tactile switch. The power input terminal of the main controller is connected to the output terminal of the power isolation circuit through the tenth diode. One signal terminal of the main controller is connected to one end of the tactile switch. The signal output terminal of the main controller is coupled to the signal input terminal of the switch control circuit. One end of the tactile switch is connected to the common terminal.

[0011] In some embodiments, the switch control circuit includes at least an LED linear driver. The signal input terminal of the LED linear driver is connected to the signal output terminal of the main controller, and is used to receive the level signal. The input level signal is used to control the working state of the LED linear driver, so as to control the working state of the lighting lamp.

[0012] The hand-cranked generator emergency mobile charging module of this invention includes a generator rectifier circuit for outputting voltage signals, a DC-DC boost circuit, a power supply and charging circuit, a power isolation circuit, a drive circuit, and a switch control circuit. The signal input terminal of the switch control circuit is connected to the signal output terminal of the drive circuit to receive a voltage level signal. This input signal controls the operating state of the switch control circuit, thereby controlling the operating state of the lighting fixture. Compared to existing technologies, configuring a 1-3W LED emergency lighting fixture in the switch control circuit allows for normal use of rechargeable batteries or generator power. When outdoors or during natural disasters, if the original battery is depleted, the hand-cranked generator can provide basic lighting for the fixture and can also provide emergency charging for equipment, ensuring personal safety and providing rescue signals. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a circuit diagram of an embodiment of the power generation rectifier circuit, DC-DC boost circuit and power isolation circuit provided by this utility model; Figure 2 This is a circuit diagram of an embodiment of the power supply and charging circuit provided by this utility model; Figure 3 This is a circuit diagram of an embodiment of the drive circuit and switch control circuit provided by this utility model. Detailed Implementation

[0014] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0015] like Figures 1-3 As shown, in the first embodiment of the hand-cranked emergency mobile charging module of this utility model, the hand-cranked emergency mobile charging module includes a power generation rectifier circuit 110, a DC-DC boost circuit 120, a power supply and charging circuit 130, a power isolation circuit 140, a drive circuit 150, and a switch control circuit 160. The generator rectifier circuit 110 is used to output a voltage signal and to rectify and filter the voltage signal. The DC-DC boost circuit 120 is used to perform secondary boosting processing on the input voltage signal; The power supply and charging circuit 130 is used to receive the voltage signal input from the DC-DC boost circuit 120 or the voltage signal input from the USB interface to charge the battery pack (corresponding to BT3.7V). The power isolation circuit 140 is used to block the flow of voltage from either the battery pack or the USB interface to the battery pack (corresponding to BT3.7V) at the same time, so as to protect the battery pack (corresponding to BT3.7V) from damage. The driver circuit 150 has the functions of signal processing, calculation and outputting level signals (high level / low level); The switch control circuit 160 can control the working state of the lighting lamp (corresponding to LED3) according to the input level signal (high level / low level); Specifically, the power generation rectifier circuit 110 is configured at the front end of the charging module to output rectified and filtered voltage signals to subsequent circuits; Furthermore, the input terminal of the DC-DC boost circuit 120 is connected to the output terminal of the power generation rectifier circuit 110 to receive the rectified and filtered voltage signal, perform secondary boosting processing on the input voltage signal, and then output it to the power supply and charging circuit 130. One input terminal of the power supply and charging circuit 130 is connected to the output terminal of the DC-DC boost circuit 120 to receive the boosted voltage signal in order to charge the battery pack (corresponding to BT3.7V); One input terminal of the power isolation circuit 140 is connected to the output terminal (B+) of the battery module (corresponding to BT3.7V) to receive the voltage signal output by the battery module (corresponding to BT3.7V), isolate the voltage signal, and then output it to the power input terminals of the drive circuit 150 and the switch control circuit 160 respectively. Furthermore, the power input terminal of the drive circuit 150 is connected to the output terminal (corresponding to the VCC terminal) of the power isolation circuit 140 to receive the voltage signal output by the power isolation circuit 140. The input voltage signal is used to control the operation of the drive circuit 150 to trigger the drive circuit 150 to output a level signal (high level / low level). Furthermore, the power input terminal of the switch control circuit 160 is connected to the output terminal (corresponding to the VCC terminal) of the power isolation circuit 140 to receive the voltage signal output by the power isolation circuit 140. The signal input terminal of the switch control circuit 160 is connected to the signal output terminal of the drive circuit 150 to receive level signals (high level / low level). When the input level signal is high, the switch control circuit 160 is controlled to work, and the voltage signal input to the power isolation circuit 140 flows through the lighting lamp (corresponding to LED3) to light up the lighting lamp (corresponding to LED3). When the input level signal is low, the switch control circuit 160 is turned off. At this time, no voltage signal flows through the lighting lamp (corresponding to LED3), and the lighting lamp (corresponding to LED3) is in a power-off state.

[0016] Using this technical solution, a 1-3W LED emergency lighting fixture is configured in the switch control circuit 160. It can be powered by a rechargeable battery or generator. When the original battery is exhausted outdoors or in the event of a natural disaster, a hand-cranked generator can be used to provide basic lighting for the fixture and to charge the equipment in an emergency, so as to ensure personal safety and provide rescue signals.

[0017] In some implementations, such as Figure 2 As shown, to improve the performance of the charging module, another input terminal of the power supply charging circuit 130 can be connected to the output terminal of the USB interface to receive the voltage signal output by the USB interface to charge the battery pack (corresponding to BT3.7V).

[0018] In some implementations, such as Figure 1 As shown, in order to improve the performance of the charging module, another input terminal of the power isolation circuit 140 can be connected to the output terminal of the USB interface to receive the voltage signal output by the USB interface.

[0019] The power isolation circuit 140 includes an eighth diode D108 and a ninth diode D109 connected in parallel. The anode of the eighth diode, D108, is connected to the output terminal (B+) of the battery module (corresponding to BT3.7V) to receive the voltage signal output by the battery module (corresponding to BT3.7V). The anode of the ninth diode, D109, is connected to the output terminal of the USB interface to receive the voltage signal output from the USB interface. Furthermore, the cathodes of the eighth diode D108 and the ninth diode D109 are connected to the power input terminals of the drive circuit 150 and the switch control circuit 160, respectively, to provide them with VCC voltage signals.

[0020] Specifically, when the drive circuit 150 and the switch control circuit 160 are powered by USB or motor M, the power is supplied through the ninth diode D109, and the eighth diode D108 blocks the voltage flow to the battery pack (corresponding to BT3.7V) to protect the battery pack (corresponding to BT3.7V) from damage. When the battery pack (corresponding to BT3.7V) is used to power the drive circuit 150 and the switch control circuit 160, the power is supplied through the eighth diode D108, and the ninth diode D109 blocks the voltage flow to the drive circuit 150 to reduce the power loss of the battery pack (corresponding to BT3.7V).

[0021] In some implementations, such as Figure 1 As shown, the generator rectifier circuit 110 includes a motor M, a rectifier bridge, and a filter module. Specifically, rotating the motor M converts the energy into electrical energy through electromagnetic induction, thereby outputting a voltage signal. The input terminal of the rectifier bridge is connected to the output terminal of motor M to receive voltage signals and rectify the input voltage signals. The input and output terminals of the filter module are connected to receive the rectified voltage signal, filter the voltage signal, and then output it to the DC-DC boost circuit 120.

[0022] The rectifier bridge includes a first diode D101 and a second diode D102 connected in series. The first diode D101 and the second diode D102, after being connected in series, are then connected in parallel with a third diode D102 and a fourth diode D104, which are also connected in series, to perform full-bridge rectification on the input voltage signal. The filtering module includes a first capacitor C101 and a second capacitor C102 connected in parallel. It is used to filter the voltage signal and then output it to the DC-DC boost circuit 120.

[0023] In some implementations, such as Figure 1 As shown, the DC-DC boost circuit 120 includes at least a first inductor L101, a first MOSFET Q101, a fifth diode D105, a fourth capacitor C104, and a DC-DC controller U101. Specifically, one end of the first inductor L101 is connected to the output of the filter module. The other end of the first inductor L101 is connected to the drain of the first MOSFET Q101 and the anode of the fifth diode D105, respectively. The gate of the first MOSFET Q101 is connected to the signal output terminal of the DC-DC controller U101. The power input terminal of the DC-DC controller U101 and one end of the fourth capacitor C104 are respectively connected to the cathode of the fifth diode D105. The cathode of the fifth diode D105 is connected to one input terminal of the power supply charging circuit 130. The source of the first MOSFET Q101 and the other end of the fourth capacitor C104 are connected to the common terminal. The DC-DC controller U101 controls the on / off state of the first MOSFET Q101, so that the input voltage signal is boosted twice through the first inductor L101, the first MOSFET Q101, the fifth diode D105 and the fourth capacitor C104, so as to output a 5V voltage signal to the power supply and charging circuit 130.

[0024] In some implementations, such as Figure 2 As shown, the power supply and charging circuit 130 includes at least a seventh diode D107 and a power manager U102. Specifically, the anode of the seventh diode D107 is connected to the cathode of the fifth diode D105. The cathode of the seventh diode D107 is connected to the power supply terminal (corresponding to pin 4) of the power manager U102 through the sixth resistor R106. The charging terminal (corresponding to pin 3) of the power manager U102 is connected to the positive terminal of the battery pack (corresponding to BT3.7V) to charge the battery pack (corresponding to BT3.7V); In addition, the USB interface input voltage signal charges the battery pack (corresponding to BT3.7V) through the sixth diode D106, the sixth resistor R106 and the power manager U102.

[0025] Specifically, when the USB interface is powered, current flows through the USB port, the sixth diode D106, the sixth resistor R106, the seventh resistor R107, the sixth capacitor C106, the seventh capacitor C7, and the power manager U102 to charge the battery pack (corresponding to BT3.7V). When the motor M is powered, the current charges the battery pack (corresponding to BT3.7V) through the seventh diode D107, the sixth resistor R106, the seventh resistor R107, the sixth capacitor C106, the seventh capacitor C7 and the power manager U102. The fourth resistor R104, the fifth resistor R105, LED1 and LED2 form a charging indicator circuit. When LED1 is lit, it indicates that the battery is charging, and when LED2 is lit, it indicates that the battery is fully charged.

[0026] In some implementations, such as Figure 3 As shown, the drive circuit 150 includes at least a main controller U103 and a tactile switch SW1. The main controller U103 performs signal processing, logic operations, and level signal output. The tactile switch SW1 is used to control the level state of the output signal of the main controller U10; Specifically, the power input terminal (corresponding to pin 5) of the main controller U103 is connected to the cathode of the tenth diode D110, and the anode of the tenth diode D110 is connected to the output terminal (corresponding to VCC) of the power isolation circuit 140, for receiving the voltage signal output by the power isolation circuit 140. One signal terminal (corresponding to pin 4) of the main controller U103 is connected to one end of the tactile switch SW1. The signal output terminal (corresponding to pin 3) of the main controller U103 is coupled to the signal input terminal of the switch control circuit 160, outputting a level signal to the switch control circuit 160 to control its operating state. One end of the tactile switch SW1 is connected to the common terminal.

[0027] In some implementations, such as Figure 3 As shown, to ensure the reliability of the lighting lamp (corresponding to LED3), the switch control circuit 160 may include at least an LED linear driver U104, which is used to control the working state of the LED; Specifically, the signal input terminal (corresponding to pin 8) of the LED linear driver U104 is connected to the signal output terminal (corresponding to pin 3) of the main controller U103 to receive the level signal input from the main controller U103. The input level signal is used to control the working state of the LED linear driver U104 in order to control the working state of the lighting lamp (corresponding to LED3).

[0028] Specifically, the VCC voltage signal provides operating power to the main controller U103 through the tenth diode D110 and the ninth capacitor C109. When the tactile switch SW1 is pressed once, the main controller U103 sends an instruction internally, outputting a high level through pin 3 to pin 8 of the LED linear driver U104. At this time, pin 8 of the LED linear driver U104 is at a high level, and the LED is lit. When the tactile switch SW1 is pressed again, the main controller U103 sends a command to output a low level through its pin 3 to pin 8 of the LED linear driver U104. At this time, pin 8 of the LED linear driver U104 is at a low level, and the LED is turned off. Among them, the ninth resistor R109 is the pull-down resistor for pin 8 of the LED linear driver U104 to prevent it from being accidentally triggered; In addition, the LED linear driver U104 can be powered by USB, directly by battery, or by motor. When the VCC power supply of the LED linear driver U104 is normal and pin 8 is high, LED3 is lit. The eighth capacitor C108 is the power supply capacitor of the LED linear driver U104, and the tenth resistor R110 is the adjustment resistor for the driving current of LED3.

[0029] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A hand-cranked emergency mobile charging module, characterized in that, have: The power generation rectifier circuit is located at the front end of the charging module and is used to output voltage signals; The DC-DC boost circuit has its input terminal connected to the output terminal of the power generation rectifier circuit, and is used to receive the voltage signal and boost the input voltage signal. A power supply and charging circuit, one of its input terminals is connected to the output terminal of the DC-DC boost circuit, for receiving the boosted voltage signal to charge the battery assembly; A power isolation circuit, one of its input terminals being connected to the output terminal of the battery assembly, is used to receive the voltage signal output by the battery assembly; A driving circuit, whose power input terminal is connected to the output terminal of the power isolation circuit, is used to receive the voltage signal output by the power isolation circuit to trigger the driving circuit to output a level signal; A switch control circuit, whose power input terminal is connected to the output terminal of the power isolation circuit, is used to receive the voltage signal output by the power isolation circuit. The signal input terminal of the switch control circuit is connected to the signal output terminal of the drive circuit, and is used to receive the level signal. The input level signal is used to control the working state of the switch control circuit so as to control the working state of the lighting lamp.

2. The hand-cranked generator emergency mobile charging module according to claim 1, characterized in that, The other input terminal of the power supply and charging circuit is connected to the output terminal of the USB interface, and is used to receive the voltage signal output by the USB interface to charge the battery assembly.

3. The hand-cranked generator emergency mobile charging module according to claim 2, characterized in that, The other input terminal of the power isolation circuit is connected to the output terminal of the USB interface, and is used to receive the voltage signal output by the USB interface.

4. The hand-cranked generator emergency mobile charging module according to claim 1, characterized in that, The power generation rectifier circuit includes a motor, a rectifier bridge, and a filter module. Rotating the motor converts energy into electrical energy through electromagnetic induction, thereby outputting the voltage signal. The input terminal of the rectifier bridge is connected to the output terminal of the motor, and is used to receive the voltage signal and rectify the input voltage signal. The input terminal of the filtering module is connected to the output terminal to receive the rectified voltage signal, filter the voltage signal, and then output it to the DC-DC boost circuit.

5. The hand-cranked generator emergency mobile charging module according to claim 4, characterized in that, The DC-DC boost circuit includes at least a first inductor, a first MOSFET, a fifth diode, a fourth capacitor, and a DC-DC controller. One end of the first inductor is connected to the output of the filter module. The other end of the first inductor is connected to the drain of the first MOSFET and the anode of the fifth diode, respectively. The gate of the first MOSFET is connected to the signal output terminal of the DC-DC controller. The power input terminal of the DC-DC controller and one end of the fourth capacitor are respectively connected to the cathode of the fifth diode. The cathode of the fifth diode is connected to one input terminal of the power supply and charging circuit. The source of the first MOS transistor and the other end of the fourth capacitor are connected to a common terminal. The DC-DC controller controls the on / off state of the first MOSFET, so that the input voltage signal is boosted twice through the first inductor, the first MOSFET, the fifth diode and the fourth capacitor to output a 5V voltage signal to the power supply and charging circuit.

6. The hand-cranked generator emergency mobile charging module according to claim 5, characterized in that, The power supply and charging circuit includes at least a seventh diode and a power manager. The anode of the seventh diode is connected to the cathode of the fifth diode. The cathode of the seventh diode is connected to the power supply terminal of the power manager through the sixth resistor. The power manager's charging terminal is connected to the positive terminal of the battery assembly to charge the battery assembly.

7. The hand-cranked generator emergency mobile charging module according to claim 6, characterized in that, The drive circuit includes at least a main controller and a tactile switch. The power input terminal of the main controller is connected to the output terminal of the power isolation circuit through the tenth diode. One signal terminal of the main controller is connected to one end of the tactile switch. The signal output terminal of the main controller is coupled to the signal input terminal of the switch control circuit. One end of the tactile switch is connected to the common terminal.

8. The hand-cranked generator emergency mobile charging module according to claim 7, characterized in that, The switch control circuit includes at least an LED linear driver. The signal input terminal of the LED linear driver is connected to the signal output terminal of the main controller, and is used to receive the level signal. The input level signal is used to control the working state of the LED linear driver, so as to control the working state of the lighting lamp.

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