Retractable generator

Abstract

This novel telescopic power generation device includes: a fixed base; a reel including a rotating shaft, a winding surface, and a bottom cavity, the rotating shaft being rotatably pivotally connected to the fixed base; a belt, one end of which is fixed to the reel and wound around the winding surface, the other end extending out of the fixed base to form a free end, the belt causing the reel to rotate in a first rotation direction when stretched by an external force; and an elastic element, one end of which is fixed to the reel and housed in the bottom cavity, the other end of which is fixed to the fixed base, accumulating energy when the belt is stretched. The reel has elastic potential energy, which, after being released by external force, drives the reel to rotate in a second rotation direction opposite to the first rotation direction, causing the belt to spring back; a permanent magnet AC generator, which includes an input shaft and an output terminal, the input shaft being connected to the rotating shaft and generating AC power as the reel rotates; and a rectifier and voltage regulator circuit, electrically connected to the output terminal of the permanent magnet AC generator, converting the AC power generated by the permanent magnet AC generator in the first and second rotation directions into DC power output.

Claims

1. A telescopic power generation device, comprising: a telescopic unit including a fixed base, a reel, a belt, and an elastic element; the reel including a rotating shaft, a winding surface, and a bottom cavity, the rotating shaft being rotatably pivotally connected to the fixed base; one end of the belt being fixed to the reel and wound around the winding surface, the other end extending out of the fixed base to form a free end, the belt driving the reel to rotate in a first rotation direction when stretched by an external force; one end of the elastic element being fixed to the reel and housed in the bottom cavity, the other end being fixed to the fixed base and attached to the belt. When stretched, it accumulates elastic potential energy, and after the external force is released, it drives the reel to rotate in a second rotation direction opposite to the first rotation direction, causing the belt to spring back; and a permanent magnet AC generator, which includes an input shaft, an output terminal and a rectifier and voltage regulator circuit. The input shaft is connected to the rotating shaft, so that the input shaft generates AC power as the reel rotates; the rectifier and voltage regulator circuit is electrically connected to the output terminal of the permanent magnet AC generator, converting the AC power generated by the permanent magnet AC generator in the first rotation direction and the second rotation direction into DC power output.

2. The telescopic power generation device as claimed in claim 1, wherein the elastic element is a coil spring, the elastic element is wound and housed in the bottom cavity, and the rotation of the reel causes the elastic element to deform in order to accumulate elastic potential energy.

3. The telescopic generator as described in claim 1 further includes a speed-increasing gear set disposed between the rotating shaft and the input shaft of the permanent magnet AC generator. The speed-increasing gear set increases the rotational speed of the rotating shaft and outputs it to the input shaft, so that the input speed of the permanent magnet AC generator is higher than the rotational speed of the reel, thereby increasing the electrical power output of the permanent magnet AC generator.

4. The telescopic generator as described in claim 1 further includes a flywheel disposed between the rotating shaft and the input shaft to store rotational kinetic energy, balance the torque difference between the belt stretching stroke and the rebound stroke, and make the input speed of the permanent magnet AC generator more stable.

5. The telescopic generator as described in claim 1 further includes a torque limiting mechanism disposed on the rotating shaft. When the torque on the rotating shaft exceeds a predetermined torque value, the torque limiting mechanism interrupts the torque transmission between the rotating shaft and the input shaft of the permanent magnet AC generator to prevent the elastic element from being damaged due to excessive stretching.

6. The telescopic generator as described in claim 1 further includes a coupling disposed between the rotating shaft and the input shaft of the permanent magnet AC generator. The coupling has a flexible compensation structure that absorbs the offset when there is a misalignment or angular deviation between the rotating shaft and the input shaft, thereby ensuring stable transmission of rotational torque.

7. The retractable generator as claimed in claim 1, wherein the rectifier and voltage regulator circuit converts the positive and negative half-cycle AC power output from the permanent magnet AC generator into DC power of the same polarity, and regulates the DC power to output at a predetermined voltage value; the output terminal of the rectifier and voltage regulator circuit is detachably electrically connected to a first energy storage module for storing the regulated DC power, wherein the first energy storage module is at least one mobile power supply, at least one rechargeable battery, or at least one supercapacitor.

8. The retractable power generation device as claimed in claim 7, wherein the first energy storage module includes at least one charging interface that provides a detachable or selective electrical connection to an external power source, including power from a mobile power source, a household power source, or a vehicle.

9. The retractable power generation device as claimed in claim 7 further includes a wireless charging module electrically connected to the first energy storage module, wherein the wireless charging module wirelessly transmits the DC power stored in the first energy storage module to an external device in accordance with a wireless charging standard.

10. The retractable power generation device as described in claim 7 further includes a smart power management unit disposed between the output terminal of the rectifier and voltage regulator circuit and the first energy storage module. The smart power management unit includes a voltage sensor, a switching circuit, and a power display. The voltage sensor is electrically connected to both the output terminal of the rectifier and voltage regulator circuit and the first energy storage module, continuously detecting the output voltage of the rectifier and voltage regulator circuit and the current energy storage capacity of the first energy storage module. The power display is electrically connected to the voltage sensor and displays the energy storage status in real time based on the current energy storage capacity of the first energy storage module. The switching circuit is electrically connected to the output terminal of the rectifier and voltage regulator circuit. Based on the detection result of the voltage sensor, it dynamically adjusts the direction of power flow. When the output voltage reaches a first predetermined value, the switching circuit prioritizes the output of the rectifier and voltage regulator circuit to a power output interface to power an external device. When the external device is not connected or the output voltage is lower than a second predetermined value, the switching circuit directs the output of the rectifier and voltage regulator circuit to the first energy storage module for charging. When the stored capacity of the first energy storage module reaches a full charge predetermined value, the switching circuit interrupts the charging of the first energy storage module to prevent overcharging damage.

11. The retractable generator as described in claim 7 further includes a rental management system comprising a cabinet and a mobile application. The cabinet includes at least one device compartment, at least one storage compartment, and at least one charging compartment connected to an external power source. The device compartment is provided for storing the retractable generator and for rental use. The storage compartment is used to store the first energy storage module, wherein the power of the first energy storage module is below 50%, and it is provided for rental and detachably connected to the retractable generator to store the electrical energy generated by the permanent magnet AC generator. The first energy storage module is returned to the storage compartment after the rental period ends. The charging compartment is used to store at least one second energy storage module and to charge the second energy storage module, enabling the second energy storage module to... The energy storage module has a power level above 50% for rental. The mobile application allows multiple users to register and selectively rent any one or any two of the retractable charging device, the first energy storage module, and the second energy storage module. The first energy storage module further includes a power recording module that detects and records a first power percentage when the first energy storage module is rented, and detects and records a second power percentage after the first energy storage module is returned, and calculates the difference between the first power percentage and the second power percentage. The difference is uploaded to the mobile application, and the mobile application issues a reward to the corresponding user based on the difference.

12. The retractable power generation device as described in claim 11, wherein the reward may be cash, virtual currency, gift certificates, vouchers, or gifts.

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