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Automobile vibrational energy piezo-electric generating method and system

A vibration energy, piezoelectric power generation technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc. Consumption and other issues, to achieve the effect of wide application, increased driving mileage, and easy installation

Inactive Publication Date: 2005-04-06
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the active suspension technology has superior performance due to the use of air pressure or oil pressure to control the force between the vehicle body and the axle, but requires large energy consumption

Method used

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  • Automobile vibrational energy piezo-electric generating method and system
  • Automobile vibrational energy piezo-electric generating method and system
  • Automobile vibrational energy piezo-electric generating method and system

Examples

Experimental program
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Embodiment Construction

[0050] see Figure 1~4 According to the technical solution of the present invention, the technical route of the first embodiment is: at least one piezoelectric device is inserted between the spring of the vehicle suspension system and the vehicle body, and the device is connected in series with the spring; figure 2 The structure of the piezoelectric device in the first embodiment is given. According to the voltage generated by the piezoelectric material under the compressive stress and the primary energy storage formula:

[0051] U=Q / C (1)

[0052] W = 1 2 QU - - - ( 2 )

[0053] It can be seen that the ability to store energy under pressure is proportional to the square of the voltage of the piezoelectric material after compression. The formula for the voltage generated by a piezoelectric material is:

[0054] ...

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Abstract

The invention relates to a method and its system which is utilized the automobile vibration energy to piezoelectric generate electricity. The piezoelectric device is set in the automobile suspension system, utilized the vibration energy to generate electric energy, and used as an electric supply to store and utilize. The system includes that no less than one piezoelectric device set in the automobile suspension system and used to transform the vibration energy to electric energy; an electric power exchange system, used to adjust and transform the electric energy produced by the piezoelectric device, and used the electric energy to the energy storage device or final power utilization load; no less than one energy storage device or final power utilization load. The piezoelectric device is connected to the electric power exchange device, and it is respectively connected to the energy storage device or final power utilization load. The invention supplies new energy source for the vehicle, especially for the electric automobile or mixing dynamic automobile. The gained electric energy can be directly used for the dynamic electric source, so that effectively increase the continuous driving mileage of the vehicle. Proper control strategy is adopted. And the invention also possesses the function of semi-active vibration reduction.

Description

technical field [0001] The invention relates to a method and system for vehicle-mounted power generation, in particular to a method and system for vehicle vibration energy piezoelectric power generation. Background technique [0002] The working principle of piezoelectric power is based on the positive piezoelectric effect, and piezoelectric materials are their core working substances. [0003] In the late 1960s, the Shanghai Institute of Ceramics of the Chinese Academy of Sciences and Shanghai Precision Medical Equipment Factory jointly researched the power supply of piezoelectric portable X-ray machines, and successfully obtained U max =60kV, I max = 3mA DC high voltage. [0004] US Patent No. 4,504,761 filed by Charles G. Triplett, titled "Vehicle Mounted Piezoelectric Generator", discloses a piezoelectric generator mounted on a vehicle tire, which utilizes the force applied to the tire during wheel rotation. The pressure on it generates electricity. [0005] The Chin...

Claims

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Application Information

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IPC IPC(8): B60G13/14B60K25/10H01L41/113
CPCH02N2/181B60G2300/60B60K25/10B60G13/14B60G2401/10H02N2/186
Inventor 曹秉刚左贺康龙云林家让
Owner XI AN JIAOTONG UNIV
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