阅读说明：本技术 一种钢轨电压能量转换电源装置 (rail voltage energy conversion power supply device ) 是由 孟献仪 王浩先 苗金元 张洋 张欢 于 2019-10-27 设计创作，主要内容包括：本发明公开了一种钢轨电压能量转换电源装置,包括：能量转换模块,包括G引脚和D引脚,所述G引脚耦接轨道以接收其电压信号,其中该能量转换模块将轨道的电压信号转换成稳定的单脉冲电压信号；滤波电路模块,耦接所述能量转换模块以接收所述单脉冲电压信号,并将所述单脉冲电压信号转换成稳定的直流电压信号；充电电路模块,耦接所述滤波电路模块以存储所述直流电压信号；以及稳压供电模块,耦接所述充电电路模块,其中该稳压供电模块控制所述充电电路模块进行升压和放电。该电源装置可以实现杂乱的轨道电压转化成电能并进行存储,避免铺设大量的供电线缆,节约资源,降低工程造价。(The invention discloses a rail voltage energy conversion power supply device, comprising: the energy conversion module comprises a G pin and a D pin, wherein the G pin is coupled with the track to receive a voltage signal of the G pin, and the energy conversion module converts the voltage signal of the track into a stable monopulse voltage signal; the filter circuit module is coupled with the energy conversion module to receive the single pulse voltage signal and convert the single pulse voltage signal into a stable direct current voltage signal; the charging circuit module is coupled with the filter circuit module to store the direct-current voltage signal; and the voltage-stabilizing power supply module is coupled with the charging circuit module, and the voltage-stabilizing power supply module controls the charging circuit module to boost and discharge. This power supply unit can realize that mixed and disorderly track voltage changes the electric energy and carries out the storage, avoids laying a large amount of power supply cables, resources are saved reduces engineering cost.)

1. A rail voltage energy conversion power supply device is characterized by comprising:

The energy conversion module (10) comprises a G pin and a D pin, wherein the G pin is coupled with the track to receive a voltage signal of the G pin, and the energy conversion module (10) converts the voltage signal of the track into a stable monopulse voltage signal;

a filter circuit module (20) coupled to the energy conversion module (10) to receive the single pulse voltage signal and convert the single pulse voltage signal into a stable direct current voltage signal;

a charging circuit module (30) coupled to the filter circuit module (20) to store the DC voltage signal; and

And the voltage-stabilizing power supply module (40) is coupled with the charging circuit module (30), wherein the voltage-stabilizing power supply module (40) controls the charging circuit module (30) to boost and discharge.

2. a rail voltage energy conversion power supply apparatus according to claim 1, wherein the energy conversion module (10) comprises:

A voltage clipping circuit connected to the rail and configured to clip the voltage signal;

The first rectifying circuit is connected with the voltage amplitude limiting circuit and is used for receiving the voltage signal subjected to amplitude limiting and rectifying the voltage signal into a unidirectional pulsating voltage signal.

3. A rail voltage to energy conversion power supply apparatus as claimed in claim 2, wherein said voltage limiting circuit comprises:

a connection terminal coupled between the G pin and the D pin;

And the first end of the piezoresistor is connected with the first end of the connecting terminal, and the second end of the piezoresistor is connected with the second end of the connecting terminal.

4. A rail voltage to energy conversion power supply apparatus as claimed in claim 3 wherein said voltage limiting circuit further comprises a resistor having one end coupled to a first end of said connection terminal and another end coupled to a first end of said voltage dependent resistor.

5. A rail voltage energy conversion power supply apparatus according to claim 2, wherein the first rectifying circuit includes:

A full-wave rectifier bridge, the first bridge end of which is connected with the first end of the piezoresistor, and the second bridge end of which is connected with the second end of the piezoresistor; and

And the capacitor is connected in parallel with the third bridge end and the fourth bridge end of the full-wave rectifier bridge, and the fourth bridge end is grounded.

6. A rail voltage energy conversion power supply apparatus according to claim 1, wherein said filter circuit module (20) comprises:

The first capacitor is connected with the ground;

and the inductor is connected between the first end of the third capacitor and the first end of the first capacitor.

7. The rail voltage energy conversion power supply device according to claim 1, further comprising a control module (50) electrically connected to the regulated power supply module (40) for controlling on/off of the regulated power supply module (40).

8. a rail voltage energy conversion power supply apparatus according to claim 1, further comprising a communication module (60), wherein the communication module (60) is electrically connected to the control module (50).

Technical Field

The invention relates to the field of power supply equipment, in particular to a rail voltage energy conversion power supply device.

Background

With the fact that urban rail transit becomes an increasingly important part of our lives at present, electric energy is transmitted to an electric train from a traction substation through a feeder line and a contact network, and then flows back to the traction substation from the electric train through a traveling rail and a return line. Since the running rails cannot be completely insulated from the track bed structure, the rails inevitably leak current to the track bed and other structures, and at the same time, the rails have voltage variations to the track bed. This leakage current is a stray current; this voltage is the rail-to-track bed voltage and is commonly referred to as the rail voltage.

The rail voltage can be changed along with the running of the electric train and still has certain electric energy; the rail voltage can be converted into stable electric energy and stored, and uninterrupted direct current electric energy can be provided for the outside. The subway tunnel is generally longer, and if various monitoring sensors adopt the power cord power supply, need lay more power supply cable, make the engineering cost rise.

Disclosure of Invention

The invention aims to at least solve one of the problems in the prior art and provides a rail voltage energy conversion power supply device, which can realize reasonable utilization of tunnel wind energy, avoid laying a large number of power supply cables, save resources and reduce construction cost.

In order to achieve the above object, the present invention provides a rail voltage energy conversion power supply apparatus, comprising: the energy conversion module comprises a G pin and a D pin, wherein the G pin is coupled with the track to receive a voltage signal of the G pin, and the energy conversion module converts the voltage signal of the track into a stable monopulse voltage signal; the filter circuit module is coupled with the energy conversion module to receive the single pulse voltage signal and convert the single pulse voltage signal into a stable direct current voltage signal; the charging circuit module is coupled with the filter circuit module to store the direct-current voltage signal; and the voltage-stabilizing power supply module is coupled with the charging circuit module, and the voltage-stabilizing power supply module controls the charging circuit module to boost and discharge.

In the technical scheme, a G pin of an energy conversion module is coupled with a track to receive a voltage signal of the track, the voltage signal is converted into a stable monopulse voltage signal, a filter circuit module coupled with the energy conversion module receives the monopulse voltage signal, the monopulse voltage signal is converted into a stable direct current voltage signal and is stored in a charging circuit module, a voltage-stabilizing power supply module controls the charging circuit module to release a stable direct current power supply for external use, and disordered track voltage is converted into electric energy through the energy conversion module by utilizing micro energy of the track voltage signal, so that direct current electric energy is supplied to the outside uninterruptedly.

In addition, the rail voltage energy conversion power supply device according to the present invention may further have the following technical features:

Further, the energy conversion module includes: a voltage clipping circuit connected to the rail and configured to clip the voltage signal; the first rectifying circuit is connected with the voltage amplitude limiting circuit and is used for receiving the voltage signal subjected to amplitude limiting and rectifying the voltage signal into a unidirectional pulsating voltage signal.

Further, the voltage limiting circuit includes: a connection terminal coupled between the G pin and the D pin; and the first end of the piezoresistor is connected with the first end of the connecting terminal, and the second end of the piezoresistor is connected with the second end of the connecting terminal.

Preferably, the voltage limiting circuit further comprises a resistor, one end of which is coupled to the first end of the connection terminal, and the other end of which is coupled to the first end of the voltage dependent resistor.

Preferably, the first rectification circuit includes: a full-wave rectifier bridge, the first bridge end of which is connected with the first end of the piezoresistor, and the second bridge end of which is connected with the second end of the piezoresistor; and the capacitor is connected in parallel with the third bridge end and the fourth bridge end of the full-wave rectifier bridge, and the fourth bridge end is grounded.

Preferably, the filter circuit module includes: the first capacitor is connected with the ground; and the inductor is connected between the first end of the third capacitor and the first end of the first capacitor.

Preferably, the power supply device further comprises a control module, which is electrically connected with the voltage-stabilizing power supply module and is used for controlling the on-off of the voltage-stabilizing power supply module.

preferably, the device further comprises a communication module, and the communication module is electrically connected with the control module.

the rail voltage energy conversion power supply device has the following additional technical characteristics: the filter circuit can further eliminate the pulsating component in the voltage signal, and a stable direct current power supply is provided for the charging circuit module; the on-off of the voltage-stabilizing power supply control module can be controlled by arranging the control module.

drawings

Fig. 1 is a block diagram of a power supply device;

FIG. 2 is a circuit diagram of an energy conversion module;

FIG. 3 is a circuit diagram of a filter circuit module;

FIG. 4 is a circuit diagram of a charging circuit module;

FIG. 5 is a circuit diagram of a regulated power supply control module;

FIG. 6 is a circuit diagram of a control module;

Fig. 7 is a circuit diagram of a communication module.

In the figure, an energy conversion module 10; a filter circuit module 20; a charging circuit module 30; a voltage stabilizing power supply module 40; a control module 50; a communication module 60.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

in the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further described with reference to fig. 1 to 7.

A rail voltage energy conversion power supply apparatus according to the present invention, as shown in fig. 1 to 5, includes: the device comprises an energy conversion module 10, a filter circuit module 20, a charging circuit module 30 and a voltage-stabilizing power supply module 40.

the energy conversion module 10 comprises a pin G and a pin D, wherein the pin G is coupled to the rail to receive a voltage signal of the rail, and the energy conversion module 10 converts the voltage signal of the rail into a stable monopulse voltage signal;

A filter circuit module 20 coupled to the energy conversion module 10 to receive the single pulse voltage signal and convert the single pulse voltage signal into a stable dc voltage signal;

A charging circuit module 30 coupled to the filter circuit module 20 for storing the dc voltage signal; the charging circuit module 30 mainly comprises a power manager chip IC1 and a lithium battery BT 1; the model of the IC1 is CN3791, which is a PWM step-down single lithium battery charging management integrated circuit with trickle, constant current and constant voltage charging modes. The constant current charging current is set by a current sense resistor RCS between the CSP pin and the BAT pin. In the constant voltage charging mode, the constant voltage charging voltage is 4.2V, and the precision is 1%; CN3791 tracks the maximum power point of the track voltage by adopting a constant voltage method, the voltage of the MPPT pin at the maximum power point tracking end is modulated to be 1.205V, and the maximum power point of the tunnel wind energy can be tracked by matching with a voltage division network formed by two resistors (R4 and R6 in figure 4) outside the sheet; the maximum power point voltage is determined by: VMPPT ═ 1.205 × (1+ R4/R6).

And a voltage-stabilizing power supply module 40 coupled to the charging circuit module 30, wherein the voltage-stabilizing power supply module 40 controls the charging circuit module 30 to boost and discharge. The voltage-stabilizing power supply control module 40 mainly comprises a DC-DC booster circuit taking FP6291LR-G1 as a core; the power supply of FP6291LR-G1 may be manually controlled on or off by control module 50.

it can be understood that the G pin of the energy conversion module 10 is coupled to the rail to receive the voltage signal thereof and convert the voltage signal into a stable single pulse voltage signal, then the filter circuit module 20 coupled to the energy conversion module 10 receives the single pulse voltage signal, converts the single pulse voltage signal into a stable dc voltage signal and stores the stable dc voltage signal in the charging circuit module 30, and then the voltage stabilizing power supply module 40 controls the charging circuit module 30 to release a stable dc power for external use, and the rail voltage signal is converted into electrical energy by the energy conversion module 10 by using the micro energy of the rail voltage signal, so that uninterrupted dc electrical energy is provided to the outside.

In one embodiment of the present invention, the energy conversion module 10 includes: a voltage clipping circuit connected to the rail and configured to clip the voltage signal; a first rectifying circuit connected to the voltage limiting circuit and configured to receive the limited voltage signal and rectify the voltage signal into a unidirectional pulsating voltage signal, for example, the voltage limiting circuit includes: a connection terminal coupled between the G pin and the D pin; the first end of the piezoresistor is connected with the first end of the connecting terminal, and the second end of the piezoresistor is connected with the second end of the connecting terminal, namely the piezoresistor mainly comprises a piezoresistor and a rectifier diode; in an embodiment of the invention, the voltage limiting circuit further includes a resistor, one end of which is coupled to the first end of the connection terminal, and the other end of which is coupled to the first end of the voltage dependent resistor. A resistor is designed in front of the piezoresistor to prevent the loop from overflowing; the rectifying diode rectifies the positive and negative alternate rail voltage into unidirectional pulsating voltage, but the unidirectional pulsating voltage contains a large pulsating component and is not ideal direct-current voltage, and the rear end of the rectifying diode is provided with a filter capacitor to preliminarily filter the pulsating component. Preferably, the first rectification circuit includes: a full-wave rectifier bridge, the first bridge end of which is connected with the first end of the piezoresistor, and the second bridge end of which is connected with the second end of the piezoresistor; and a capacitor connected in parallel to the third bridge terminal and the fourth bridge terminal of the full-wave rectifier bridge, and the fourth bridge terminal is grounded, specifically, the voltage limiting circuit limits the rail voltage within 100V, and the first rectifier circuit rectifies the rail voltage with positive and negative alternation into a unidirectional pulsating voltage by using a rectifier element with unidirectional conductivity, but the unidirectional pulsating voltage contains a large pulsating component and is not an ideal direct-current voltage.

As shown in fig. 3, the filter circuit includes: the first capacitor is connected with the ground; the inductor is connected between the first end of the third capacitor and the first end of the first capacitor, that is, the LC filter circuit can further eliminate the ripple component in the voltage signal, and provide a stable dc power supply for the charging circuit module 30.

as shown in fig. 6, the device further includes a control module 50 electrically connected to the regulated power supply module 40 for controlling the on/off of the regulated power supply module 40, for example, in the present invention, the control module 50 is mainly composed of a single chip microcomputer chip STC15W102SOP8, and detects the voltage condition and button state of the lithium battery in real time, and controls the power supply of the regulated power supply module 40 to be turned on or off; when the discharge of the lithium battery is lower than 20% of the electric quantity, the control module 50 controls the electronic switching tube Q2 to cut off the power supply of the voltage-stabilizing power supply module; when the lithium battery enters the charging mode again, the lithium battery control module controls the electronic switching tube Q2 to switch on the power supply of the voltage-stabilizing power supply module.

As shown in fig. 7, the intelligent terminal further comprises a communication module 60, wherein the communication module 60 is electrically connected with the control module 50, and the communication module 60 is mainly composed of an RS485 integrated communication module 60TD301D485H-a, so that an RS485 communication interface is constructed.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto. Those skilled in the art will appreciate that various features of the various embodiments of the invention described hereinabove may be omitted, added to, or combined in any manner, respectively. Moreover, simple modifications and structural modifications that are adaptive and functional to those skilled in the art are within the scope of the present invention.