An energy harvesting device based on vehicle vibration

Abstract

The invention discloses an energy capturing device based on automobile vibration. The energy capturing device comprises a housing, an elastic device, an electromagnetic energy capturing component, a piezoelectric energy capturing component and an energy management circuit, wherein the housing is arranged on an automotive windscreen; the elastic device is arranged on the housing and vibrates according to the vibration fed back by an automobile body, an engine and a ground tire; the electromagnetic energy capturing component is connected with the elastic device, vibrates according to the vibration of the elastic device and generates electromagnetic capture energy; the piezoelectric energy capturing component is arranged on the housing, is arranged in a position corresponding to the electromagnetic energy capturing component and generates piezoelectric capture energy under the vibration excitation of the electromagnetic energy capturing component; the energy management circuit is arranged on the housing, is respectively connected with the electromagnetic energy capturing component and the piezoelectric energy capturing component, and receives and distributes the electromagnetic capture energy and the piezoelectric capture energy. The energy capturing device disclosed by the invention has the benefits that a piezoelectric-electromagnetic structure is formed by arranging the piezoelectric energy capturing component and the electromagnetic energy capturing component; electric energy generated by the vibration fed by an automobile is used for power supply to an ETC electronic tag and other low-power devices, so that independent uninterrupted power supply, safety high efficiency and low cost are realized.

Description

technical field [0001] The invention relates to the technical field of automotive electronic new energy and power generation, in particular to an energy harvesting device based on automotive vibration. Background technique [0002] The electronic toll collection system (Electronic Toll Collection, referred to as ETC) is a high-tech equipment and An advanced system composed of software can automatically collect road tolls without stopping the vehicle. It is mainly composed of electronic tags and roadside equipment. ETC's electronic tags are placed on the front windshield of the car, and the roadside equipment can read and write the information of the electronic tags through short-range communication, which is necessary to complete the exchange of fees (payments). Information exchange procedures. It is an effective means to alleviate the "bottleneck" of traffic congestion at toll stations, improve road traffic capacity and reduce environmental pollution, so countries develop...

AI Technical Summary

Problems solved by technology

ETC electronic tags are placed directly inside the car. Although most lithium batteries have a wide operating temperature range, if they are placed in a closed car for a long time in summer, they will explode due to their high temperature.

In this way, the lithium battery in the ETC electronic tag has become the main safety hazard of the car in summer

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