Vibration pressure stabilizing system
By using a vibration voltage stabilization system, mechanical vibration is converted into electrical energy through mechanical structure and piezoelectric effect, and then stably stored and released through an electrical energy processing module. This solves the problem of low energy collection efficiency of mechanical vibration and achieves efficient and stable energy utilization.
Patent Information
- Application Number
- CN202511273991.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2025-12-09
AI Technical Summary
In existing technologies, the efficiency of collecting and converting mechanical vibration energy is low, especially the weak and unstable piezoelectric power generation method, which is difficult to store and use efficiently.
A vibration voltage stabilization system was designed, including a vibration sensing and amplification module, a piezoelectric power generation module, an electrical energy processing module, an energy storage battery, and a voltage stabilization output unit. The system optimizes energy input through mechanical structure, achieves electromechanical conversion using the piezoelectric effect, and solves the energy storage and release problems through a low-power electronic management system.
It improves the utilization rate of mechanical vibration energy, realizes efficient capture, stable storage and safe release of weak energy, adapts to vibration fluctuations in industrial environments, and meets the power supply needs of modern electronic equipment.
Smart Images
Figure CN121098151A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vibration power generation equipment technology, and more specifically to a vibration voltage stabilization system. Background Technology
[0002] Mechanical vibration refers to the regular reciprocating motion of an object or particle around its equilibrium position. The intensity of vibration is measured by the vibration quantity, which can be the displacement, velocity, or acceleration of the vibrating body. In real life, many devices generate vibration during operation. For example, cars vibrate when driving over uneven ground or during their own operation; another example is a vibrating screen, which uses the vibration of a vibrating motor to achieve the screening effect. However, in actual operation, most of the energy generated by the vibration of mechanical equipment is lost as internal energy and heat.
[0003] With increasing environmental awareness, how to recover the energy lost due to vibration has become a hot topic. A common approach is to use piezoelectric materials. When a piezoelectric material is compressed, the internal charges move to both sides, with positive and negative charges moving in opposite directions. This results in one side of the piezoelectric material carrying a positive charge and the other a negative charge, creating a potential difference that induces a current, converting mechanical energy into electricity. However, the current generated by piezoelectric power generation is weak (µA level), unstable, and varies with vibration. How to efficiently collect, convert, and store this extremely weak energy for effective use remains a key challenge. Summary of the Invention
[0004] I. Technical problems to be solved To address the shortcomings of existing technologies, this invention proposes a vibration voltage stabilization system that converts continuous mechanical motion into electrical energy through a piezoelectric power generation module. This electrical energy is then transferred to an energy storage battery for storage and use via a circuit, thus capturing environmental mechanical energy in an environmentally friendly and energy-saving manner.
[0005] II. Specific Technical Solutions A vibration voltage stabilization system includes: a vibration sensing and amplification module for receiving and amplifying continuous mechanical vibrations in the environment; a piezoelectric power generation module connected to the vibration sensing and amplification module for converting the amplified mechanical vibrations into alternating current (AC) power; an energy processing module connected to the piezoelectric power generation module, the energy processing module including a rectifier unit, an energy storage unit, and an energy harvesting and charging management integrated circuit; an energy storage battery connected to the energy harvesting and charging management integrated circuit in the energy processing module; and a voltage stabilization output unit connected to the energy storage battery for providing a stable DC power supply to an external load.
[0006] Implementation principle and working principle: In this solution, the vibration sensing and amplification module, which serves as the mounting carrier for the piezoelectric power generation module (such as the piezoelectric ceramic component), continuously receives mechanical vibrations from the environment. These vibrations include those from vibrating screens, car shock absorbers, and other continuously vibrating sources such as motors, and amplify and transmit them to the piezoelectric power generation module. The piezoelectric power generation module then converts the amplified mechanical vibrations into alternating current (AC) energy. The power processing module rectifies and stabilizes the generated AC energy for easy input into a storage battery. The core principle of this solution lies in optimizing energy input through a mechanical structure, namely the vibration sensing and amplification module, achieving electromechanical conversion through the piezoelectric effect, and finally solving the energy storage and release challenges through a low-power electronic management system. The dedicated power processing module integrates complex logic such as MPPT, low-power comparators, and state machines, specifically designed to handle irregular and minute energy pulses.
[0007] Preferably, the mechanical vibration source includes a vibrating screen; the vibrating screen includes a mounting frame and a screen body; a plurality of first springs are arranged around the screen body; a pad is arranged on the mounting frame; the pad corresponds one-to-one with the first spring, and the other end of the first spring is connected to the pad; the piezoelectric power generation module is arranged between the pad and the mounting frame; the beneficial effect of this preferred embodiment is that, by utilizing the principle of mechanical resonance, when the external vibration frequency is consistent with or close to the natural frequency of the structure, the amplitude will reach its maximum, thereby maximizing the concentration and transmission of the energy of environmental vibration to the piezoelectric ceramic. Resonance increases the deformation and power generation of the piezoelectric ceramic by an order of magnitude, solving the core problems of low environmental vibration energy density and difficulty in collection.
[0008] Preferably, a second spring is sleeved inside the first spring; one end of the second spring is fixedly connected to the pad, and the other end of the second spring is fixedly provided with a mass part; the beneficial effect of this preferred embodiment is that, by setting the second spring, it is more sensitive and can amplify and output the vibration to the piezoelectric power generation module when the vibration is smaller.
[0009] Preferably, the rectifier unit is a full-wave rectifier bridge, which includes four Schottky diodes, and the turn-on voltage of the four Schottky diodes is less than 0.5V. The beneficial effect of this preferred embodiment is that the piezoelectric ceramic generates a high open-circuit voltage, but the short-circuit current is extremely small (microampere level). The turn-on voltage of ordinary silicon diodes is about 0.7V, and the voltage drop loss accounts for a large proportion under microcurrent, which may result in the inability to collect effective energy. Schottky diodes have low turn-on voltage (0.2-0.3V) and fast recovery characteristics, and can still maintain very low self-loss under microampere level current. This improves the system's start-up sensitivity and overall energy harvesting efficiency.
[0010] Preferably, the energy harvesting and charging management integrated circuit has maximum power point tracking (MPPT) and ultra-low self-power consumption at the nanoampere level. The beneficial effect of this preferred option is that the optimal output power point of the piezoelectric ceramic changes with the vibration intensity. The MPPT algorithm dynamically adjusts the input equivalent impedance of the IC to ensure that the piezoelectric ceramic always operates at the maximum output power. The trickle charging technology can handle very small charging currents (µA level), which is suitable for the average output level of piezoelectric ceramics.
[0011] Preferably, the power processing module further includes an overvoltage protection unit, which includes a transient voltage suppression diode or a Zener diode connected in parallel to the output of the rectifier unit. The advantages of this preferred embodiment are: under strong vibration and shock, piezoelectric ceramics may generate instantaneous high voltage (up to tens of volts), far exceeding the withstand voltage of subsequent ICs and batteries; when the voltage exceeds its clamping voltage, the TVS diode or Zener diode will quickly conduct, dissipating the excess energy as heat, thereby limiting the voltage within a safe range; it can prevent instantaneous high voltage from breaking down expensive charging management ICs and energy storage batteries, greatly improving the robustness and service life of the system, and enabling it to adapt to vibration fluctuations in industrial environments.
[0012] Preferably, the voltage-regulated output unit is a low-dropout linear regulator or a DC-DC buck converter. The advantage of this preferred option is that it can provide a stable and clean rated voltage (e.g., 3.3V) to the load regardless of how the battery voltage changes due to charging and discharging, meeting the demanding power supply requirements of modern electronic components. In particular, the DC / DC converter minimizes energy loss during the voltage regulation process, allowing more stored energy to be used for the load device.
[0013] Preferably, the system also includes a data acquisition module, which comprises an acceleration sensing unit, a temperature detection unit, an external power supply, and a data display unit electrically connected to each other. The acceleration sensing unit is used to detect the vibration frequency and amplitude of the first and second springs. The temperature detection unit is used to detect the internal temperature data of the system. The external power supply supplies power to the energy storage battery when the system is not vibrating. The display unit is used to display the battery charge and charging status of the energy storage battery, as well as the vibration frequency and amplitude of the first and second springs, and the system temperature.
[0014] The beneficial effects of this invention are as follows: 1. This invention provides a completely passive power supply architecture based on mechanical vibration. The core of this architecture is to efficiently capture stray mechanical energy in the environment through a vibration sensing and amplification module, and convert it into electrical energy using the piezoelectric effect, thereby improving energy utilization and making the system more environmentally friendly.
[0015] 2. By employing an ultra-low turn-on voltage Schottky rectifier bridge to lower the loss threshold and integrating maximum power point tracking and a dedicated management IC, the problem of efficient capture and safe storage of weak and fluctuating energy is solved. Combined with overvoltage protection and regulated output, a synergistically optimized high-performance micro-energy management system is formed, ensuring high efficiency and stability throughout the entire process from energy capture to high-quality DC output. Attached Figure Description
[0016] Figure 1 This is a logic diagram of the vibration voltage stabilization system of the present invention.
[0017] Figure 2 This is a schematic diagram of the circuit connection of the vibration voltage stabilization system of the present invention.
[0018] Figure 3 This is a schematic diagram of the vibration source structure of the vibration stabilization system of the present invention.
[0019] Figure 4 for Figure 3 A magnified schematic diagram of a partial vibration source.
[0020] Explanation of reference numerals in the attached figures: Mounting frame 1, Vibration motor 2, Screen body 3, First spring 4, Pad 5, Second spring 6, Mass unit 7. Detailed Implementation
[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0022] like Figure 1-4 As shown: A vibration voltage stabilization system, comprising: The vibration sensing and amplification module is used to receive and amplify continuous mechanical vibrations in the environment. Specifically, the continuous mechanical motion in the environment refers to the mechanical vibration of the vibrating screen during its movement. Specifically, the vibrating screen includes a mounting frame, on which a screen body 3 with a vibration motor 2 is mounted. The mounting frame 1 is a cubic frame, and the four apex corners of the screen body 3 are connected to the mounting frame 1 via first springs 4. When the screen body vibrates, it causes the first springs 4 to compress and recover. Specifically, a pad 5 is provided at the bottom of the first spring 4, and the pad 5 is fixedly mounted on the mounting frame 1. A piezoelectric power generation module is provided at the connection between the pad 5 and the mounting frame 1. Specifically, the piezoelectric power generation module uses piezoelectric ceramic components, and there are multiple sets of piezoelectric ceramic components, all installed between the pad 5 and the mounting frame 1.
[0023] In practice, to further increase the extrusion frequency of the piezoelectric ceramic component, a second spring 6 is sleeved inside the first spring 3. One end of the second spring 6 is fixedly connected to the pad, and the other end of the second spring 6 is fixedly provided with a mass part 7, which is specifically a mass block or a mass ball. Through the arrangement of the second spring 6 and the mass part 7, it is more sensitive and can make the mass part 7 reciprocate on the second spring 5 with smaller vibrations, and its reciprocating frequency is faster, which can better amplify the pressure value and output it to the piezoelectric power generation module. In a specific implementation, the second spring 5 can be set on the top of the mass part 7, so that two sets of second springs 6 are symmetrically arranged on the upper and lower sides of the mass part 7, and the top of the other second spring 5 is connected to the corresponding position of the screen body 3, so as to better drive the reciprocating motion of the second spring 5.
[0024] The piezoelectric power generation module converts amplified mechanical vibrations into alternating current, specifically using piezoelectric ceramic components. The power processing module is electrically connected to the piezoelectric power generation module, specifically using TI's BQ25504 or Linear's LTC3588. Internally, it integrates a rectifier unit, an energy storage unit, and an energy harvesting and charging management integrated circuit. Specifically, the rectifier unit is a full-bridge rectifier circuit composed of four diodes, specifically Schottky diodes with a turn-on voltage below 0.5V. Schottky diodes have low turn-on voltage and fast recovery characteristics, with a turn-on voltage of 0.2-0.3V, maintaining very low self-loss even under microampere currents; this improves the system's startup sensitivity and overall energy harvesting efficiency.
[0025] A storage capacitor is connected in parallel at the output of the rectifier unit. This storage capacitor can convert the DC power output from the rectifier bridge into pulsating DC power, but the output still contains AC ripple. The capacitor stores and releases the high-frequency AC components through its charging and discharging characteristics, making the output voltage more stable. At the same time, it can suppress voltage fluctuations. Voltage fluctuations caused by changes in power supply or load are absorbed and released by the storage capacitor, making the output voltage more stable. The energy storage battery is specifically a lithium battery, which is connected to the energy harvesting and charging management integrated circuit in the power processing module.
[0026] Among them, the energy harvesting and charging management integrated circuit has maximum power point tracking (MPPT) and ultra-low self-power consumption at the nanoampere level; in specific implementation, the optimal output power point of the piezoelectric ceramic will change with the vibration intensity; the MPPT algorithm of the energy harvesting and charging management integrated circuit dynamically adjusts the input equivalent impedance of the IC to ensure that the piezoelectric ceramic always works in the state of maximum output power; it adopts trickle charging technology, which can handle very small charging currents, specifically at the µA level, suitable for the average output level of low-voltage electricity.
[0027] In practical implementation, an overvoltage protection unit is also set between the power processing modules. The overvoltage protection unit is specifically a transient voltage suppression diode or a Zener diode, which is connected in parallel at the output of the rectifier unit. Under strong vibration and shock, the piezoelectric ceramic may generate instantaneous high voltage, which can reach tens of volts, far exceeding the withstand voltage of the subsequent ICs and batteries. When the voltage exceeds its clamping voltage, the TVS diode or Zener diode will quickly conduct, dissipating the excess energy in the form of heat, thereby limiting the voltage within a safe range. This can prevent instantaneous high voltage from breaking down the expensive charging management IC and energy storage battery, greatly improving the robustness and service life of the system, and enabling it to adapt to vibration fluctuations in industrial environments.
[0028] In practical implementation, a voltage regulator is connected to the output terminal of the energy storage battery. The voltage regulator is either a low-dropout linear regulator or a DC-DC buck converter. When the battery voltage changes due to charging and discharging, it can provide a stable and clean rated voltage, such as 3.3V, to the load, meeting the stringent power supply requirements of modern electronic components. In particular, the DC / DC converter minimizes energy loss during the voltage regulation process, allowing more stored energy to be used for the load equipment.
[0029] In practice, it also includes a data acquisition module, which can collect operating status data of the voltage regulation system; including an acceleration sensing unit, a temperature detection unit, an external power supply, and a data display unit with electrical connections. The acceleration sensing unit is specifically an acceleration sensor. By detecting the vibration frequency and amplitude of the first and second springs, it can directly determine the intensity of the vibration. Data can be transmitted to the display unit via a communication connection, which can be a monitor or a mobile terminal such as a mobile phone or tablet, interacting with the data via 4G / 5G or Wi-Fi. During implementation, the temperature detection unit monitors the temperature data of each circuit node in the system, effectively preventing damage to the piezoelectric system caused by abnormal temperatures. The external power supply powers the energy storage battery when the system is not vibrating and can also provide power output to other components, preventing wear and tear on the energy storage battery from prolonged inactivity. It also monitors the equipment status and can determine the normality of the vibration source's vibration by analyzing whether the system generates electricity and the current and voltage data during generation. In practice, the display unit can display the battery charge and charging status of the energy storage battery.
[0030] Implementation principle and working principle: In this solution, the vibration sensing and amplification module, which serves as the mounting carrier for the piezoelectric power generation module (such as the piezoelectric ceramic component), continuously receives mechanical vibrations from the environment and amplifies them before transmitting them to the piezoelectric power generation module. The piezoelectric power generation module then converts the amplified mechanical vibrations into alternating current (AC) energy. The power processing module rectifies and stabilizes the generated AC energy for easy input into the energy storage battery. The core principle of this solution lies in optimizing energy input through a mechanical structure, namely the vibration sensing and amplification module, achieving electromechanical conversion through the piezoelectric effect, and finally solving the energy storage and release challenges through a low-power electronic management system. The dedicated power processing module integrates complex logic such as MPPT, low-power comparators, and state machines, specifically designed for processing irregular and minute energy pulses.
[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.
Claims
1. A vibration voltage stabilization system, characterized in that, include: Vibration sensing and amplification module, used to receive and amplify continuous mechanical vibrations in the environment; A piezoelectric power generation module, connected to the vibration sensing and amplification module, is used to convert the amplified mechanical vibration into alternating current. An energy processing module is connected to the piezoelectric power generation module. The energy processing module includes a rectifier unit, an energy storage unit, and an energy harvesting and charging management integrated circuit. The energy storage battery is connected to the energy harvesting and charging management integrated circuit in the power processing module. A voltage regulator output unit, connected to the energy storage battery, is used to provide a stable DC power supply to an external load.
2. The vibration voltage stabilization system according to claim 1, characterized in that: The mechanical vibration source includes a vibrating screen; the vibrating screen includes a mounting frame and a screen body; a plurality of first springs are arranged around the screen body; a pad is arranged on the mounting frame; the pad corresponds one-to-one with the first spring, and the other end of the first spring is connected to the pad; the piezoelectric power generation module is arranged between the pad and the mounting frame.
3. The vibration voltage stabilization system according to claim 2, characterized in that: A second spring is sleeved inside the first spring; one end of the second spring is fixedly connected to the pad, and the other end of the second spring is fixedly provided with a mass part.
4. The vibration voltage stabilization system according to claim 1, characterized in that: The rectifier unit is a full-wave rectifier bridge, which includes four Schottky diodes, and the turn-on voltage of the four Schottky diodes is less than 0.5V.
5. The vibration voltage stabilization system according to claim 1, characterized in that: The energy harvesting and charging management integrated circuit integrates maximum power point tracking and employs trickle charging.
6. The vibration voltage stabilization system according to claim 1, characterized in that: The power processing module also includes an overvoltage protection unit, which includes a transient voltage suppression diode or a Zener diode connected in parallel to the output of the rectifier unit.
7. The vibration voltage stabilization system according to claim 1, characterized in that: The voltage regulation output unit is a low-dropout linear regulator or a DC-DC buck converter.
8. The vibration voltage stabilization system according to claim 1, characterized in that: It also includes a data acquisition module, which comprises an acceleration sensing unit, a temperature detection unit, an external power supply, and a data display unit, all electrically connected. The acceleration sensing unit is used to detect the vibration frequency and amplitude of the first and second springs. The temperature detection unit is used to detect the internal temperature data of the system. The external power supply supplies power to the energy storage battery when the system is not vibrating. The display unit is used to display the battery charge and charging status of the energy storage battery, as well as the vibration frequency and amplitude of the first and second springs and the system temperature.