Design method of off-grid charging pile based on road surface vibration energy recovery

Abstract

The invention discloses a design method of an off-grid charging pile based on road surface vibration energy recovery, and relates to the technical field of new energy charging. An off-grid charging pile system based on road surface vibration energy recovery is constructed, a vibration energy recovery module adopts a composite structure of a piezoelectric power generation unit and an electromagnetic induction power generation unit and is laid below the surface layer of a road, and an energy conversion module comprises a rectifying circuit, a filter circuit and a booster circuit. The rectifying circuit converts alternating current output by the vibration energy recovery module into direct current, the filter circuit filters clutters in the current, the booster circuit boosts the low-voltage direct current to the voltage level matched with the energy storage module through the DC-DC converter, and the energy storage module stores converted electric energy through the battery pack. The charging control module automatically identifies the charging protocol of the new energy automobile and adjusts the output power according to the residual electric quantity of the energy storage module and the charging requirement of the automobile, and the charging pile main body contains the modules including the charging gun, the human-computer interaction interface and the shell and adapts to the outdoor road environment.

Description

Technical Field

[0001] This invention discloses a design method for off-grid charging piles based on road vibration energy recovery, which relates to the field of new energy charging technology. Background Technology

[0002] With the continuous growth of new energy vehicle ownership, the availability and coverage of charging piles have become key factors restricting the industry's development. Existing charging piles are mainly divided into two categories: grid-connected and off-grid. Grid-connected charging piles rely on stable grid resources, and their deployment is limited by line layout; off-grid charging piles mostly use solar panels as energy sources. However, existing solar-powered off-grid charging piles have several drawbacks: a single energy source, ineffective power generation on cloudy days or at night, limited battery life, and difficulty meeting high-frequency charging demands. Solar panels also suffer from large footprints, high deployment costs, and poor applicability in space-constrained areas such as roadsides. Summary of the Invention

[0003] This invention addresses the problems of existing technologies by providing a design method for off-grid charging piles based on road vibration energy recovery. Off-grid charging piles based on road vibration energy recovery can be independently deployed in scenarios such as urban roads, highway service areas, rural roads, and parking lots where there is no power grid coverage or the cost of grid access is high, providing clean energy replenishment for new energy vehicles.

[0004] The specific solution proposed in this invention is as follows:

[0005] This invention provides a design method for off-grid charging piles based on road vibration energy recovery, and constructs an off-grid charging pile system based on road vibration energy recovery. The system includes a vibration energy recovery module, an energy conversion module, an energy storage module, a charging control module, and a charging pile body. Each module is connected sequentially via wiring.

[0006] The vibration energy recovery module employs a composite structure of piezoelectric power generation units and electromagnetic induction power generation units, laid beneath the road surface. The piezoelectric power generation units are evenly distributed in the stress-bearing areas of the road surface. When vehicles roll over them, the vibrations cause the piezoelectric power generation units to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation units generate induced current during vibration, outputting alternating current.

[0007] The energy conversion module includes a rectifier circuit, a filter circuit, and a boost circuit. The rectifier circuit converts the AC power output from the vibration energy recovery module into DC power. The filter circuit removes noise from the current. The boost circuit, through a DC-DC converter, raises the low-voltage DC power to a voltage level compatible with the energy storage module.

[0008] The energy storage module uses battery packs to store converted electrical energy and monitors the battery's voltage, current, and temperature parameters in real time.

[0009] The charging control module automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs.

[0010] The main body of the charging station includes various modules, including a charging gun, a human-machine interface, and a shell. The charging gun is equipped with a charging interface; the human-machine interface uses a touch screen to support charging-related operations; and the shell is adapted to outdoor road environments.

[0011] Furthermore, the piezoelectric power generation unit of the off-grid charging pile design method based on road vibration energy recovery uses a high-sensitivity piezoelectric ceramic sheet array, which is evenly distributed in the stress area of ​​the road surface. The vibration generated by vehicle rolling causes the piezoelectric ceramic sheet to deform, converting mechanical energy into electrical energy.

[0012] The electromagnetic induction power generation unit consists of a coil and a permanent magnet. The permanent magnet is fixed on an elastic support structure. When vibrating, the permanent magnet reciprocates relative to the coil, cutting magnetic field lines to generate induced current.

[0013] Furthermore, the energy storage module of the off-grid charging pile design method based on road vibration energy recovery adopts a lithium battery pack and is equipped with a battery management system (BMS). The lithium battery pack is used to store the converted electrical energy, and the BMS monitors the voltage, current and temperature parameters of the battery in real time to realize overcharge, over-discharge and over-temperature protection and extend the battery life.

[0014] Furthermore, the core of the charging control module in the design method of off-grid charging pile based on road vibration energy recovery adopts an MCU controller, which integrates charging protocol identification, power adjustment, and safety protection functions. The MCU controller automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs. It also has built-in short-circuit protection, overcurrent protection, and leakage protection modules to ensure the safety of the charging process.

[0015] Furthermore, the outer shell of the charging pile body in the design method of the off-grid charging pile based on road vibration energy recovery is made of high-strength materials that are waterproof, dustproof, and impact-resistant, making it suitable for outdoor road environments.

[0016] This invention also provides an off-grid charging pile based on road vibration energy recovery, including an off-grid charging pile system based on road vibration energy recovery. The system includes a vibration energy recovery module, an energy conversion module, an energy storage module, a charging control module, and a charging pile body. Each module is connected sequentially via wiring.

[0017] The vibration energy recovery module employs a composite structure of piezoelectric power generation units and electromagnetic induction power generation units, laid beneath the road surface. The piezoelectric power generation units are evenly distributed in the stress-bearing areas of the road surface. When vehicles roll over them, the vibrations cause the piezoelectric power generation units to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation units generate induced current during vibration, outputting alternating current.

[0018] The energy conversion module includes a rectifier circuit, a filter circuit, and a boost circuit. The rectifier circuit converts the AC power output from the vibration energy recovery module into DC power. The filter circuit removes noise from the current. The boost circuit, through a DC-DC converter, raises the low-voltage DC power to a voltage level compatible with the energy storage module.

[0019] The energy storage module uses battery packs to store converted electrical energy and monitors the battery's voltage, current, and temperature parameters in real time.

[0020] The charging control module automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs.

[0021] The main body of the charging station includes various modules, including a charging gun, a human-machine interface, and a shell. The charging gun is equipped with a charging interface; the human-machine interface uses a touch screen to support charging-related operations; and the shell is adapted to outdoor road environments.

[0022] Furthermore, in the off-grid charging pile based on road vibration energy recovery, the piezoelectric power generation unit uses a high-sensitivity piezoelectric ceramic sheet array, which is evenly distributed in the stress area of ​​the road surface. The vibration generated by vehicle rolling causes the piezoelectric ceramic sheet to deform, converting mechanical energy into electrical energy.

[0023] The electromagnetic induction power generation unit consists of a coil and a permanent magnet. The permanent magnet is fixed on an elastic support structure. When vibrating, the permanent magnet reciprocates relative to the coil, cutting magnetic field lines to generate induced current.

[0024] Furthermore, the energy storage module in the off-grid charging pile based on road vibration energy recovery adopts a lithium battery pack and is equipped with a battery management system (BMS). The lithium battery pack is used to store the converted electrical energy, and the BMS monitors the voltage, current and temperature parameters of the battery in real time to realize overcharge, over-discharge and over-temperature protection, thereby extending the battery life.

[0025] Furthermore, the core of the charging control module in the off-grid charging pile based on road vibration energy recovery adopts an MCU controller, which integrates charging protocol identification, power adjustment, and safety protection functions. The MCU controller automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs. It also has built-in short-circuit protection, overcurrent protection, and leakage protection modules to ensure the safety of the charging process.

[0026] Furthermore, in the off-grid charging pile based on road vibration energy recovery, the outer shell of the charging pile body is made of high-strength materials that are waterproof, dustproof, and impact-resistant, making it suitable for outdoor road environments.

[0027] The advantages of this invention are:

[0028] Stable and reliable energy source: It does not rely on the power grid or natural conditions. It generates electricity by recovering the vibration energy of vehicles on the road. As long as there are vehicles passing by, energy can be continuously recovered, solving the pain point of solar off-grid charging piles being affected by the weather.

[0029] High energy recovery efficiency: It adopts a composite power generation structure of piezoelectric + electromagnetic induction, which can capture road vibrations of different frequencies and amplitudes more fully than a single power generation method, improving the recovery efficiency by more than 30%.

[0030] Flexible deployment and wide applicability: No grid connection is required. The modular design facilitates rapid deployment in various scenarios such as urban roads, remote sections, and temporary parking lots, without occupying additional ground space, thus solving the problem of limited deployment of grid-connected charging piles.

[0031] Safe and stable charging: It integrates a BMS battery management system and multiple charging safety protection modules, which can monitor energy storage and charging process in real time to avoid safety hazards such as overcharging and overcurrent. At the same time, the dynamic power adjustment strategy ensures the stability of the charging process. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the method flow of the present invention. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0034] Example 1

[0035] This invention provides a design method for off-grid charging piles based on road vibration energy recovery, and constructs an off-grid charging pile system based on road vibration energy recovery. The system includes a vibration energy recovery module, an energy conversion module, an energy storage module, a charging control module, and a charging pile body. Each module is connected sequentially via wiring.

[0036] The vibration energy recovery module employs a composite structure of piezoelectric power generation units and electromagnetic induction power generation units, laid beneath the road surface. The piezoelectric power generation units are evenly distributed across the stress-bearing areas of the road surface. When vehicles roll over them, the vibrations cause these units to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation units generate induced current during vibration, outputting alternating current. The piezoelectric power generation units utilize a high-sensitivity piezoelectric ceramic plate array, evenly distributed across the stress-bearing areas of the road surface. The vibrations from vehicles causing the piezoelectric ceramic plates to deform convert mechanical energy into electrical energy.

[0037] The electromagnetic induction power generation unit consists of a coil and a permanent magnet. The permanent magnet is fixed on an elastic support structure. When vibrating, the permanent magnet reciprocates relative to the coil, cutting magnetic field lines to generate induced current.

[0038] The energy conversion module includes a rectifier circuit, a filter circuit, and a boost circuit. The rectifier circuit converts the AC power output from the vibration energy recovery module into DC power. The filter circuit filters out noise in the current. The boost circuit uses a DC-DC converter to raise the low-voltage DC power to a voltage level compatible with the energy storage module, such as 48V, to achieve efficient energy transfer.

[0039] The energy storage module utilizes a battery pack to store converted electrical energy and monitors the battery's voltage, current, and temperature parameters in real time. The energy storage module employs a lithium battery pack equipped with a Battery Management System (BMS). The lithium battery pack stores the converted electrical energy, while the BMS monitors the battery's voltage, current, and temperature parameters in real time, providing overcharge, over-discharge, and over-temperature protection to extend battery life.

[0040] The charging control module automatically identifies the charging protocol of the new energy vehicle, such as GB / T 18487.1-2015, and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs. The core of the charging control module uses an MCU controller, integrating charging protocol recognition, power adjustment, and safety protection functions. The MCU controller automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs; it also has built-in short-circuit protection, overcurrent protection, and leakage protection modules to ensure safety during the charging process.

[0041] The main body of the charging pile includes various modules, including a charging gun, a human-machine interface, and a shell. The charging gun is equipped with a charging interface that is compatible with mainstream new energy vehicles. The human-machine interface uses a touch screen display and supports operations such as charging start, stop, and fee inquiry. The shell is adapted to outdoor road environments.

[0042] The outer shell can be made of high-strength materials that are waterproof, dustproof, and impact-resistant, making it suitable for outdoor road environments.

[0043] Example 2

[0044] This invention also provides an off-grid charging pile based on road vibration energy recovery, including an off-grid charging pile system based on road vibration energy recovery. The system includes a vibration energy recovery module, an energy conversion module, an energy storage module, a charging control module, and a charging pile body. Each module is connected sequentially via wiring.

[0045] The vibration energy recovery module employs a composite structure of piezoelectric power generation units and electromagnetic induction power generation units, laid beneath the road surface. The piezoelectric power generation units are evenly distributed in the stress-bearing areas of the road surface. When vehicles roll over them, the vibrations cause the piezoelectric power generation units to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation units generate induced current during vibration, outputting alternating current.

[0046] The energy conversion module includes a rectifier circuit, a filter circuit, and a boost circuit. The rectifier circuit converts the AC power output from the vibration energy recovery module into DC power. The filter circuit removes noise from the current. The boost circuit, through a DC-DC converter, raises the low-voltage DC power to a voltage level compatible with the energy storage module.

[0047] The energy storage module uses battery packs to store converted electrical energy and monitors the battery's voltage, current, and temperature parameters in real time.

[0048] The charging control module automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs.

[0049] The main body of the charging station includes various modules, including a charging gun, a human-machine interface, and a shell. The charging gun is equipped with a charging interface; the human-machine interface uses a touch screen to support charging-related operations; and the shell is adapted to outdoor road environments.

[0050] The information interaction and execution process between the modules in the off-grid charging pile mentioned above are based on the same concept as the method embodiment of the present invention, and the specific details can be found in the description in the method embodiment of the present invention, and will not be repeated here.

[0051] Similarly, the advantages of the off-grid charging pile of the present invention are:

[0052] Stable and reliable energy source: It does not rely on the power grid or natural conditions. It generates electricity by recovering the vibration energy of vehicles on the road. As long as there are vehicles passing by, energy can be continuously recovered, solving the pain point of solar off-grid charging piles being affected by the weather.

[0053] High energy recovery efficiency: It adopts a composite power generation structure of piezoelectric + electromagnetic induction, which can capture road vibrations of different frequencies and amplitudes more fully than a single power generation method, improving the recovery efficiency by more than 30%.

[0054] Flexible deployment and wide applicability: No grid connection is required. The modular design facilitates rapid deployment in various scenarios such as urban roads, remote sections, and temporary parking lots, without occupying additional ground space, thus solving the problem of limited deployment of grid-connected charging piles.

[0055] Safe and stable charging: It integrates a BMS battery management system and multiple charging safety protection modules, which can monitor energy storage and charging process in real time to avoid safety hazards such as overcharging and overcurrent. At the same time, the dynamic power adjustment strategy ensures the stability of the charging process.

[0056] It should be noted that not all steps and modules in the above processes and off-grid charging pile structures are mandatory; some steps or modules can be omitted as needed. The execution order of each step is not fixed and can be adjusted as required. The off-grid charging pile structures described in the above embodiments can be physical or logical structures. That is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or they may be jointly implemented by certain components in multiple independent devices.

[0057] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A design method for off-grid charging piles based on road vibration energy recovery, characterized by: An off-grid charging pile system based on road vibration energy recovery is constructed. The system includes a vibration energy recovery module, an energy conversion module, an energy storage module, a charging control module, and a charging pile body. The modules are connected sequentially via wiring. The vibration energy recovery module employs a composite structure of piezoelectric power generation units and electromagnetic induction power generation units, laid beneath the road surface. The piezoelectric power generation units are evenly distributed in the stress-bearing areas of the road surface. When vehicles roll over them, the vibrations cause the piezoelectric power generation units to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation units generate induced current during vibration, outputting alternating current. The energy conversion module includes a rectifier circuit, a filter circuit, and a boost circuit. The rectifier circuit converts the AC power output from the vibration energy recovery module into DC power. The filter circuit removes noise from the current. The boost circuit, through a DC-DC converter, raises the low-voltage DC power to a voltage level compatible with the energy storage module. The energy storage module uses battery packs to store converted electrical energy and monitors the battery's voltage, current, and temperature parameters in real time. The charging control module automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs. The main body of the charging station includes various modules, including a charging gun, a human-machine interface, and a shell. The charging gun is equipped with a charging interface; the human-machine interface uses a touch screen to support charging-related operations; and the shell is adapted to outdoor road environments.

2. The design method for an off-grid charging pile based on road vibration energy recovery according to claim 1, characterized in that it uses piezoelectric... The power generation unit uses a high-sensitivity piezoelectric ceramic sheet array, which is evenly distributed in the stress area of ​​the road surface. The vibration generated by the vehicle rolling causes the piezoelectric ceramic sheet to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation unit consists of a coil and a permanent magnet. The permanent magnet is fixed on an elastic support structure. When vibrating, the permanent magnet reciprocates relative to the coil, cutting magnetic field lines to generate induced current.

3. The design method for an off-grid charging pile based on road vibration energy recovery according to claim 1, characterized in that: The energy storage module uses a lithium battery pack and is equipped with a battery management system (BMS). The lithium battery pack is used to store the converted electrical energy, and the BMS monitors the battery's voltage, current, and temperature parameters in real time to achieve overcharge, over-discharge, and over-temperature protection, thus extending the battery's lifespan.

4. The design method for an off-grid charging pile based on road vibration energy recovery according to claim 1, characterized in that the charging... The core of the control module adopts an MCU controller, which integrates charging protocol recognition, power adjustment, and safety protection functions. The MCU controller automatically recognizes the charging protocol of new energy vehicles and adjusts the output power according to the remaining power of the energy storage module and the charging needs of the vehicle. It also has built-in short-circuit protection, overcurrent protection, and leakage protection modules to ensure the safety of the charging process.

5. The design method for an off-grid charging pile based on road vibration energy recovery according to claim 1, characterized in that: The outer shell of the charging pile is made of high-strength materials that are waterproof, dustproof, and impact-resistant, making it suitable for outdoor road environments.

6. An off-grid charging pile based on road vibration energy recovery, characterized in that: This includes an off-grid charging pile system based on road vibration energy recovery. The system comprises a vibration energy recovery module, an energy conversion module, an energy storage module, a charging control module, and a charging pile body. Each module is connected sequentially via wiring. The vibration energy recovery module employs a composite structure of piezoelectric power generation units and electromagnetic induction power generation units, laid beneath the road surface. The piezoelectric power generation units are evenly distributed in the stress-bearing areas of the road surface. When vehicles roll over them, the vibrations cause the piezoelectric power generation units to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation units generate induced current during vibration, outputting alternating current. The energy conversion module includes a rectifier circuit, a filter circuit, and a boost circuit. The rectifier circuit converts the AC power output from the vibration energy recovery module into DC power. The filter circuit removes noise from the current. The boost circuit, through a DC-DC converter, raises the low-voltage DC power to a voltage level compatible with the energy storage module. The energy storage module uses battery packs to store converted electrical energy and monitors the battery's voltage, current, and temperature parameters in real time. The charging control module automatically identifies the charging protocol of the new energy vehicle and adjusts the output power according to the remaining power of the energy storage module and the vehicle's charging needs. The main body of the charging station includes various modules, including a charging gun, a human-machine interface, and a shell. The charging gun is equipped with a charging interface; the human-machine interface uses a touch screen to support charging-related operations; and the shell is adapted to outdoor road environments.

7. An off-grid charging pile based on road vibration energy recovery according to claim 6, characterized in that it uses piezoelectric power generation. The unit uses a high-sensitivity piezoelectric ceramic sheet array, which is evenly distributed in the stress area of ​​the road surface. The vibration generated by the vehicle rolling causes the piezoelectric ceramic sheet to deform, converting mechanical energy into electrical energy. The electromagnetic induction power generation unit consists of a coil and a permanent magnet. The permanent magnet is fixed on an elastic support structure. When vibrating, the permanent magnet reciprocates relative to the coil, cutting magnetic field lines to generate induced current.

8. An off-grid charging pile based on road vibration energy recovery according to claim 6, characterized in that: The energy storage module uses a lithium battery pack and is equipped with a battery management system (BMS). The lithium battery pack is used to store the converted electrical energy, and the BMS monitors the battery's voltage, current, and temperature parameters in real time to achieve overcharge, over-discharge, and over-temperature protection, thus extending the battery's lifespan.

9. An off-grid charging pile based on road vibration energy recovery according to claim 6, characterized in that charging... The core of the control module adopts an MCU controller, which integrates charging protocol recognition, power adjustment, and safety protection functions. The MCU controller automatically recognizes the charging protocol of new energy vehicles and adjusts the output power according to the remaining power of the energy storage module and the charging needs of the vehicle. It also has built-in short-circuit protection, overcurrent protection, and leakage protection modules to ensure the safety of the charging process.

10. An off-grid charging pile based on road vibration energy recovery according to claim 6, characterized in that: The outer shell of the charging pile is made of high-strength materials that are waterproof, dustproof, and impact-resistant, making it suitable for outdoor road environments.

Images