Self-powered system of power converter

Abstract

The utility model discloses a self-powered system of a power converter, comprising a magnetoelectric transducer, an electric energy storage circuit, a control circuit, a sensing unit, a processor and a communication unit, the magnetoelectric transducer is electrically connected with the electric energy storage circuit and the control circuit, the electric energy storage circuit and the control circuit are both electrically connected with an electric energy instantaneous discharge circuit, and the sensing unit is electrically connected with the processor. The electric energy instantaneous discharge circuit is electrically connected with the sensing unit, the processor and the communication unit, the electric energy instantaneous discharge circuit is electrically connected with the sensing unit, the processor and the communication unit, and the electric energy instantaneous discharge circuit is electrically connected with the sensing unit and the communication unit and is electrically connected with the processor. Electric quantity generated by the main power generation source is stored in the super capacitor, and the auxiliary power generation source supplies power to the peripheral control circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of self-power supply, in particular to a self-power supply system of a power converter. Background Art

[0002] In recent years, self-powered technologies have rapidly developed across various fields. A variety of self-powered technologies can be used to convert ambient energy into electrical energy to power various loads. These technologies include magnetoelectric transducers, which are constructed by bonding a magnetostrictive material and a piezoelectric plate via an elastic substrate of varying shapes. Under alternating magnetic field excitation, the magnetostrictive material strains, causing the elastic substrate to vibrate. This elastic substrate, through the adhesive layer, drives the piezoelectric plate to vibrate, generating charge through the piezoelectric effect of the piezoelectric material, thereby converting magnetic field energy into electrical energy. Under weak magnetic field excitation, the output of a transducer with a single magnetoelectric composite unit is weak, and the voltage of a supercapacitor used for energy storage is too low to directly power wireless sensors and their own management circuits. Therefore, a self-powered system with a power converter is proposed to address these issues. Utility Model Content

[0003] In order to solve the problems in the above background technology, the technical solution adopted by the present invention to solve the technical problems is: a self-powered system of a power converter, which includes: a magnetoelectric transducer, an electric energy storage circuit, a control circuit, a sensor unit, a processor and a communication unit. The magnetoelectric transducer is electrically connected to the electric energy storage circuit and the control circuit, and the electric energy storage circuit and the control circuit are both electrically connected to the electric energy instantaneous discharge circuit, and the electric energy instantaneous discharge circuit is electrically connected to the sensor unit, the processor and the communication unit, and the electric energy instantaneous discharge circuit is electrically connected to the sensor unit and the communication unit through an electrical connection to the processor.

[0004] As a preferred technical solution of the present invention, the sensing unit is a temperature and humidity sensor SHT11, and the communication unit is a single-chip UHF transceiver communication chip CC1100 designed for low-power wireless applications.

[0005] As a preferred technical solution of the present invention, the sensing unit, processor and communication unit are loads of the electric energy instantaneous discharge circuit.

[0006] As a preferred technical solution of the present invention, the electric energy instantaneous discharge circuit includes a power management circuit, and the power management circuit includes a main power supply circuit and an auxiliary power supply circuit.

[0007] As a preferred technical solution of the present utility model, the main power supply circuit includes a main power supply, a main matching circuit, a main rectifier circuit, a main capacitor, an electric energy instantaneous discharge circuit, and a wireless sensor. The main power supply, main matching circuit, main rectifier circuit, main capacitor, electric energy instantaneous discharge circuit, and wireless sensor are connected in sequence through wires.

[0008] As an optimal technical solution of the present utility model, the auxiliary power supply circuit includes an auxiliary power supply, an auxiliary matching circuit, an auxiliary rectifier circuit, an auxiliary capacitor, a voltage comparator, and a signal generating circuit. The auxiliary power supply circuit includes an auxiliary power supply, an auxiliary matching circuit, an auxiliary rectifier circuit, an auxiliary capacitor, a voltage comparator, and a signal generating circuit, which are connected in sequence through wires.

[0009] As a preferred technical solution of the present invention, the main generating capacitor is electrically connected to the voltage comparator, and the electric energy instantaneous discharge circuit is electrically connected to the signal generating circuit.

[0010] The utility model has the following advantages: the output power of the supercapacitor is increased by using the electric energy instantaneous discharge circuit, the electricity generated by the main power generation source is stored in the supercapacitor, and the auxiliary power generation source supplies power to the peripheral control circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the self-powered principle of the preferred embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the power management circuit principle of the preferred embodiment of the utility model;

[0013] Figure 3 It is a schematic diagram of an electric energy instantaneous discharge circuit of a preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention are described clearly and completely below. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of the present invention. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Please refer to Figure 1-Figure 3The utility model provides a self-powered system for a power converter, comprising: a magnetoelectric transducer, an electric energy storage circuit, a control circuit, a sensor unit, a processor and a communication unit. The magnetoelectric transducer is electrically connected to the electric energy storage circuit and the control circuit. The electric energy storage circuit and the control circuit are both electrically connected to the electric energy instantaneous discharge circuit. The electric energy instantaneous discharge circuit is electrically connected to the sensor unit, the processor and the communication unit. The electric energy instantaneous discharge circuit is electrically connected to the sensor unit and the communication unit, and both are electrically connected to the processor. When the alternating magnetic field excites the magnetoelectric transducer, the magnetoelectric transducer converts the magnetic field energy into electric energy and stores it in a supercapacitor. When the electric charge accumulates to a certain level, the control circuit controls the electric energy instantaneous discharge circuit to operate, and instantly releases the electric charge in the supercapacitor, generating a large discharge power to drive the sensor unit, the processor and the communication unit to operate.

[0017] Among them, the sensing unit is a temperature and humidity sensor SHT11, the communication unit is a single-chip UHF transceiver communication chip CC1100 designed for low-power wireless applications, the sensing unit, the processor and the communication unit are the loads of the instantaneous discharge circuit of electric energy, the instantaneous discharge circuit of electric energy includes a power management circuit, the power management circuit includes a main power supply circuit and an auxiliary power supply circuit, the main power supply circuit includes a main power supply, a main matching circuit, a main rectifier circuit, a main capacitor, an instantaneous discharge circuit of electric energy, a wireless sensor, a main power supply, a main matching circuit, a main rectifier circuit, a main capacitor, an electric energy The instantaneous discharge circuit and the wireless sensor are connected in sequence through wires. The auxiliary power supply circuit includes an auxiliary power supply, an auxiliary matching circuit, an auxiliary rectifier circuit, an auxiliary capacitor, a voltage comparator, and a signal generating circuit. The auxiliary power supply circuit includes an auxiliary power supply, an auxiliary matching circuit, an auxiliary rectifier circuit, an auxiliary capacitor, a voltage comparator, and a signal generating circuit. The main capacitor is electrically connected to the voltage comparator, and the electric energy instantaneous discharge circuit is electrically connected to the signal generating circuit. The electric energy instantaneous discharge circuit is composed of a single-ended flyback switching power supply and a Burst trigger signal generating circuit. The circuit is as follows Figure 3 As shown in the figure, C1 is a supercapacitor, D0 is the number of pulses of the Burst trigger signal, and C is a filter capacitor.

[0018] In summary, this paper addresses the problem of low energy stored in supercapacitors under weak magnetic field excitation, making them incapable of directly driving wireless sensors. A transient energy discharge circuit was designed to increase the output power of supercapacitors. This circuit utilizes a dual power supply, a magnetoelectric transducer. The primary power source stores energy in the supercapacitor, while the secondary power source powers the peripheral control circuit, generating a continuous burst trigger signal to control the transient energy discharge circuit.

[0019] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

[0020] Other parts of the present invention that are not described in detail belong to the prior art and will not be described in detail here.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-powered system for a power converter, characterized in that: include: The system is composed of a magnetoelectric transducer, an electric energy storage circuit, a control circuit, a sensing unit, a processor and a communication unit. The magnetoelectric transducer is electrically connected to the electric energy storage circuit and the control circuit. The electric energy storage circuit and the control circuit are both electrically connected to the electric energy instantaneous discharge circuit. The electric energy instantaneous discharge circuit is electrically connected to the sensing unit, the processor and the communication unit. The electric energy instantaneous discharge circuit is electrically connected to the sensing unit and the communication unit through an electrical connection to the processor.

2. The self-powered system of a power converter according to claim 1, wherein: The sensing unit is a temperature and humidity sensor SHT11, and the communication unit is a single-chip UHF transceiver communication chip CC1100 designed for low-power wireless applications.

3. The self-powered system of a power converter according to claim 1, wherein: The sensing unit, processor and communication unit are loads of the electric energy instantaneous discharge circuit.

4. The self-powered system of a power converter according to claim 1, wherein: The electric energy instantaneous discharge circuit includes a power management circuit, and the power management circuit includes a main power supply circuit and an auxiliary power supply circuit.

5. The self-powered system of a power converter according to claim 4, characterized in that: The main power supply circuit includes a main power supply, a main matching circuit, a main rectifier circuit, a main capacitor, an electric energy instantaneous discharge circuit, and a wireless sensor. The main power supply, the main matching circuit, the main rectifier circuit, the main capacitor, the electric energy instantaneous discharge circuit, and the wireless sensor are connected in sequence through wires.

6. The self-powered system of a power converter according to claim 4, characterized in that: The auxiliary power supply circuit includes an auxiliary power supply, an auxiliary matching circuit, an auxiliary rectifier circuit, an auxiliary capacitor, a voltage comparator, and a signal generating circuit. The auxiliary power supply circuit includes an auxiliary power supply, an auxiliary matching circuit, an auxiliary rectifier circuit, an auxiliary capacitor, a voltage comparator, and a signal generating circuit, which are connected in sequence through wires.

7. The self-powered system of a power converter according to claim 5, characterized in that: The main generating capacitor is electrically connected to the voltage comparator, and the electric energy instantaneous discharge circuit is electrically connected to the signal generating circuit.

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