KR20190136239A - Fluid System Having Wireless Power Transmission Apparatus - Google Patents

Abstract

The present invention relates to a fluid system having a wireless power transmission device and, more specifically, to a wireless power transmission device capable of transmitting and receiving wireless power with a fluid in between, and a fluid system having the wireless power transmission device. The fluid system having a wireless power transmission device comprises: a housing providing a space in which a fluid is accommodated or in which the fluid flows; a wireless power transmission module transmitting wireless power in a magnetic resonant method; at least one wireless power reception module receiving the power transmitted from the wireless power transmission module; and utilization equipment to which the power received from the wireless power reception module is provided.

Description

Fluid System Having Wireless Power Transmission Apparatus}

The present invention relates to a fluid system having a wireless power transmitter. More particularly, the present invention relates to a fluid system having a wireless power transmitter capable of transmitting and receiving wireless power across a fluid.

In general, wireless power transmission refers to a technology of supplying power to home appliances by wireless instead of a wired power line, and it is possible to supply power wirelessly without using a power cable to connect a device that requires power to a power outlet. Therefore, related research is being conducted.

Such wireless power transmission technologies are classified into magnetic induction, magnetic resonance, and microwave. The magnetic induction method is a technique using magnetic induction coupling between coils in close proximity. The distance between two transmitting and receiving coils is within several cm, and the transmission efficiency depends largely on the arrangement condition of the two coils. The magnetic resonance method is a technology in which non-radiative magnetic field energy is transmitted between two resonators separated from each other by resonant coupling, and wireless power transmission is possible at a distance of 1 to 2 meters between the coils of the power transmission and reception. The arrangement of the two coils is relatively flexible, and there is an advantage in that the wireless charging range can be extended by using a relay method. On the other hand, the microwave method is a technology for transmitting power by radiating an electromagnetic wave of an ultra-high frequency such as microwave through an antenna, it is possible to transmit long-range wireless power, but the safety problem due to electromagnetic waves should be considered.

Generally, a system in which a fluid flows inside or a system for storing or storing a fluid (hereinafter, referred to as a “fluid system”), for example, a fluid storage tank or a fluid pipe, may be used as needed to determine the state, temperature, and pressure of the fluid inside. It is highly necessary to install a sensor inside the fluid system for accurate measurement of flow rate or flow rate, but it is easy to connect the sensor inside and outside of the fluid system by wire for power supply due to weak airtightness or ignition due to short circuit. Not.

The present invention relates to various loads such as a storage tank in which a high pressure or ignitable fluid is accommodated, or a sensor unit installed inside a pipe through which a high pressure or ignitable fluid flows, using a wireless power transmitter that wirelessly transmits and receives power. It is an object of the present invention to provide a fluid system having a wireless power transmitter capable of supplying power without the risk of leakage or explosion.

In addition, an object of the present invention is to provide a fluid system having a wireless power transmitter capable of transmitting and receiving power between the power transmission module and the power receiving module with the fluid therebetween.

Furthermore, the present invention can prevent a short circuit and an explosion when at least one of the wireless power receiving modules is located inside a storage tank in which a high pressure or ignitable fluid is accommodated, or a high pressure or ignitable fluid is located inside the pipe. An object of the present invention is to provide a fluid system having a wireless power transmitter.

In addition, when the plurality of wireless power receiving module is provided, the present invention can wirelessly transmit and receive power even when at least one of a voltage, a polarity of a required voltage, and a required amount of power required by a load device connected to each power receiving module is different. An object of the present invention is to provide a fluid system having a wireless power transmitter.

In order to solve the above problems, a housing for providing a space for receiving or flowing fluid; A wireless power transmission module provided at an outer side of the housing to transmit wireless power in a magnetic resonance method; At least one wireless power receiving module provided inside or outside the housing and receiving power transmitted from the wireless power transmission module with the fluid in the housing therebetween; And a load device provided with the electric power received by the wireless power receiving module.

In addition, the housing may be a storage tank for receiving the fluid or a pipe through which the fluid flows.

In this case, the loading machine may include at least one of a sensor unit and a lighting unit.

Here, the sensor unit may include at least one of a temperature sensor, a pressure sensor, a flow sensor and a flow rate sensor.

In addition, the sensor unit may be provided with a short range communication module for wirelessly transmitting the information detected by the sensor unit.

The short range communication module may be any one of Bluetooth, infrared communication, UWB, and ZigBee communication module.

In addition, the wireless power receiving module and the loading device may be disposed in the fluid inside the housing.

In this case, at least a portion of the housing is provided with a non-metallic window, the wireless power transmission module may be mounted to transmit the wireless power into the housing through the window.

Here, the window may be made of a transparent material.

According to the present invention, it is possible to transmit and receive power wirelessly with the fluid in the fluid system in which the fluid flows or the fluid is interposed, so that wireless power transmission is possible with the fluid interposed to simplify the configuration of the fluid system. have.

In addition, according to the present invention, even when the pressure or temperature inside the fluid system is high or when high airtightness is required, it is possible to obtain the effect of installing the lighting or various sensors as the wireless power load device in the fluid or the state of the fluid interposed therebetween. As a result, it is possible to improve the airtightness of the fluid system and to reduce the risk of explosion or fire.

In particular, according to the present invention, at least one of the wireless power receiving module to prevent the short circuit and explosion when the driving tank is located inside the storage tank in which the high pressure or ignitable fluid, etc., or the high pressure or ignitable fluid flows can do.

1 shows a perspective view of a fluid storage tank, which is one embodiment of a fluid system in accordance with the present invention.
2 is a block diagram of a fluid system having a wireless power transmitter according to an embodiment of the present invention.
3 is a block diagram of a fluid system having a wireless power transmitter according to another embodiment of the present invention.
4 is a block diagram of a fluid system having a wireless power transmitter according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail. However, the invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Like numbers refer to like elements throughout.

1 shows a storage tank as a fluid system with a wireless power transmitter as an example of a fluid system 3000 according to the present invention.

In the example shown in FIG. 1, the fluid system 3000 is illustrated in the form of a storage tank, but is not limited thereto, and may be in the form of an oil supply pipe or a pipe through which fluid flows, and various fluids in which fluid is received or flowed. It may be in the form of a receiver or tubing.

The fluid system 3000 according to the present invention includes a housing 2000 which provides a space in which the fluid is accommodated or flows; A wireless power transmission module 300 provided outside the housing 2000 to wirelessly transmit power; At least one wireless power receiving module (not shown) provided inside or outside the housing 2000 and receiving power transmitted from the wireless power transmission module 300 with a fluid in the housing therebetween; And a load device (not shown) provided with power received from the wireless power receiving module.

It is assumed that the fluid system 3000 illustrated in FIG. 1 is a fluid storage tank made of a metal material in which high pressure, high temperature, or pyrophoric fluid is stored.

The housing 2000 constituting the fluid system 3000 may be formed of a metal material in order to stably receive a high-pressure or pyrophoric fluid accommodated therein.

In order to monitor the temperature, pressure or condition of the fluid in the metal housing, a sensor or the like is mounted inside the housing 2000, or a window or the like is installed in the housing for the inside of the housing to be visually observed. Suppose you need to be installed.

According to the present invention, when the housing 2000 is made of a metal material, a non-metal window 2200 may be formed on at least a portion of the housing 2000. This is to allow the wireless power transmission module 300 to be described later to wirelessly transmit power or to observe the inside through lighting therein.

The fluid system 3000 according to the present invention may include a wireless power receiving module and a load for supplying power received from the wireless power receiving module.

In this case, a window 2200 is formed in at least a part of the metal housing 2000 to seal the window 2200 with a nonmetallic material 2100, for example, a pressure resistant glass, and the outside of the nonmetallic material. The wireless power transmission module 300 may be mounted. In this case, the power transmitted from the wireless power transmission module 300 is transmitted through the non-metallic window 2200 and radiated into the housing 2000, thereby minimizing a decrease in wireless power transmission efficiency.

In this case, the window 2200 may be formed in any area of the housing 2000 as described above, but may be formed in the side area of the housing 2000 so that an operator or the like may visually monitor the inside of the housing 2000. Can be.

On the other hand, the wireless power transmitter according to the present embodiment employs a magnetic resonance method can transmit and receive power wirelessly even when the wireless power transmission module and the power receiving module are separated by a predetermined interval or more.

In the case of such a magnetic resonance method, the resonant frequencies of the power transmission module and the power reception module are preferably the same or almost the same. In this case, an energy transfer channel is formed between the power transmission module and the power reception module by resonant coupling. That is, the electromagnetic waves emitted from the power transmission module are transmitted to the power receiving module through the energy transmission channel, and the electromagnetic waves input through the power receiving module may be converted into electric power through a receiving circuit unit such as an impedance matching unit or a rectifying unit inside the power receiving module. The converted power may be transferred to a load connected with the wireless power receiving module to charge the load or provide driving power.

The wireless power receiving module (not shown) does not require a separate cable or the like, so that the risk of leakage may occur when wired power is supplied without affecting the airtight state of the housing.

In addition, when the window 2200 is made of a transparent material and the lighting is installed inside the housing as a loading machine, the window 2200 may be visually monitored through the window.

2 is a block diagram of a fluid system 3000 having a wireless power transmitter according to an embodiment of the present invention.

The fluid system 3000 according to the present invention shown in FIG. 2 includes a housing 2000 which provides a space for receiving or flowing a fluid; A wireless power transmission module 300 provided outside the housing 2000 to wirelessly transmit power; At least one wireless power receiving module 500 provided inside or outside the housing 2000 and receiving power transmitted from the wireless power transmission module 300 with a fluid in the housing therebetween, and the wireless It may be provided with a load device 530 is provided with the power received from the power receiving module.

The wireless power transmission module 300 may include a transmission circuit unit 320 and a power transmission coil 310. The transmission circuit unit 320 may include a transmission rectifying unit 322, a high frequency conversion unit 324, a transmission impedance matching unit 326, and the like.

Specifically, when AC power is provided to the transmission rectifier 322 from the outside, the rectifier 322 may be converted into DC power, and the converted DC power may be converted into high frequency voltage by the high frequency converter 324. have.

Meanwhile, the transmission impedance matching unit 326 is disposed between the power transmission coil 310 and the high frequency conversion unit 324 and includes a transmission coil 310, a transmission rectifying unit 322, a high frequency conversion unit 324, and the like. The impedance of 320 may be matched. As an example, the transmission impedance matching unit 326 may be located at the front end of the power transmission coil 310 to match the impedances of the front end of the power transmission coil 310 and the transmission impedance matching unit 326.

In addition, the power transmission coil 310 generates a magnetic field using the converted power source, forms an energy transmission channel by resonant coupling with the power receiving coil 510 of the wireless power reception module 500, and transmits the energy. Power can be sent through the channel in the form of electromagnetic signals. Preferably, the power transmission coil 310 and the power receiving coil 510 are matched to have substantially the same resonant frequency to improve power transmission efficiency.

In this case, the wireless power receiving module 500 may include a power receiving coil 510 and a receiving circuit unit 520 as shown in the drawing. In this case, the receiving circuit unit 520 may include a receiving impedance matching unit 522, a receiving rectifying unit 524, a capacitor 526, a diode 528, and the like.

In detail, the power receiving coil 510 receives power transmitted from the power transmission coil 310 of the wireless power transmission module 300 described above. The electromagnetic wave-type power received through the faucet coil 510 may be rectified and converted by the receiving circuit unit 520 and converted, and the converted power may provide power to a load connected to the wireless power receiving module. .

The receiving impedance matching unit 522 may be disposed between the power receiving coil 510 and the receiving rectifying unit 524 to match the impedance of the receiving coil 510 and the receiving rectifying unit 524.

In detail, the reception impedance matching unit 522 may be positioned at the rear end of the power receiving coil 510 to match impedances of the front end of the power receiving coil 510 and the reception impedance matching unit 522. To this end, the receiving impedance matching unit 522 may include a variable inductor or a variable capacitor, or may include a parallel array structure in which a plurality of circuits in which capacitors and FET switches are directly connected are connected in parallel.

In this case, the variable capacitor or the parallel array may be connected in parallel with the power receiving coil 510 to perform impedance matching by changing the capacitance value of the reception impedance matching unit 522.

Subsequently, the reception rectifier 524 converts the DC power generated by the reception impedance matching unit 522 into AC power, and is transferred to the load device 530 through the capacitor 526 and the diode 528.

On the other hand, the wireless power receiving module 500 may be provided inside the separate case 505. The case 505 may be provided inside the housing 2000. However, the case 505 may be understood as the scope of the present invention as long as the housing 200 has a fluid therebetween even outside the housing 2000.

At this time, since the fluid is accommodated or flows inside the housing 2000 as described above, the case 505 may have a watertight structure to prevent the penetration of the fluid.

The wireless power receiving module 500 may supply power to the load device 530. In this case, the load device 530 is configured to include a sensor unit or at least one invention element, for example LED, for sensing at least one of the pressure, temperature, flow rate, speed of the fluid inside the housing 2000 It may be an illumination unit. The load device 530 may be provided with a separate case separately from the power receiving module, but is installed together inside the case 505 of the wireless power receiving module 500 described above for simplicity of configuration and ease of installation. It can be integrated with the power receiving module.

As described above, the load device 530, such as a sensor unit or an illumination unit, detects at least one of pressure, temperature, flow rate, and velocity of the fluid contained or flows in the housing 2000 or illuminates the inside of the housing. Can provide.

3 is a block diagram of a fluid system having a wireless power transmitter according to another embodiment of the present invention. Descriptions duplicated with those described with reference to FIGS. 1 and 2 will be omitted.

In the above-described embodiment, when the load device 530 is a sensor unit instead of an illumination unit, it is necessary to transmit the sensing information sensed by the sensor unit to the outside. Similar to the reason for supplying wireless power to the sensor unit, the information detected by the sensor unit is preferably wirelessly transmitted to a receiving device 532 such as an external control unit.

In this case, the load device 530 may have a built-in wireless communication module (not shown) in order to wirelessly transmit the detection information to the receiving device 532.

Accordingly, the wireless power receiving module 500 and the load device 530 are provided to be spaced apart from the power transmission module 300 and the receiving device 532 with the fluid or the inner side of the housing 2000 interposed therebetween. There is no need for a separate cable or the like for data transmission, and power may be wirelessly transmitted and data may be wirelessly transmitted.

In this way, it can improve airtightness, eliminate the risk of leakage and help maintain and maintain the fluid system.

On the other hand, through the detection information received through the receiving device 532 it is possible to obtain the state information about the fluid contained in or flowing in the housing (2000).

The load device 530 and the receiving device 532 may be provided with the same type of wireless communication module for data communication. The wireless communication module may be a short range communication module, and any one of Bluetooth, Infrared Data Association (IrDA), Ultra Wideband (UWB), and ZigBee may be applied as a short range communication technology. .

4 is a block diagram of a fluid system having a wireless power transmitter according to another embodiment of the present invention. 4 illustrates a case where a plurality of load devices 530 and 540 described above are provided, for example, two. That is, since the plurality of sensor units for detecting the pressure, temperature, flow rate, speed, etc. of the fluid may be provided inside the housing 2000, the load device 530, 530 ′ is inside the housing 2000. A plurality of receivers may be provided, and receivers 532 and 532 ′ may be provided outside the housing 2000, respectively.

In FIG. 4, the external receivers 532 and 532 ′ are respectively provided, but one integrated receiver may be used.

In this case, the number of the load devices 532 and 532 'is not limited and may be appropriately increased or decreased.

Therefore, even when a plurality of the wireless power receiving module 500 is provided, the configuration can be simplified by transmitting power from the single wireless power transmitting module 300.

Since the wireless power transmission module 300 and the wireless power reception module 500 have been described above, repetitive description thereof will be omitted.

Although the present specification has been described with reference to preferred embodiments of the invention, those skilled in the art may variously modify and change the invention without departing from the spirit and scope of the invention as set forth in the claims set forth below. Could be done. Therefore, it should be seen that all modifications included in the technical scope of the present invention are basically included in the scope of the claims of the present invention.

100: tank
300: wireless power transmission module
500: wireless power receiving module
2000: Housing
3000: Fluid System

Claims (9)

A housing providing a space for receiving or flowing the fluid;
A wireless power transmission module provided at an outer side of the housing to transmit wireless power in a magnetic resonance method;
At least one wireless power receiving module provided inside or outside the housing and receiving power transmitted from the wireless power transmission module with the fluid in the housing therebetween; And,
And a load device provided with the power received from the wireless power receiving module. The method of claim 1,
And the housing is a storage tank for receiving the fluid or a pipe through which the fluid flows. The method of claim 1,
The loading system includes at least one of a sensor unit and an illumination unit. The method of claim 3,
The sensor unit is at least one of a temperature sensor, a pressure sensor, a flow sensor and a flow rate sensor. The method of claim 4, wherein
The sensor unit is a fluid system, characterized in that the short-range communication module for transmitting the information detected by the sensor unit wirelessly. The method of claim 5,
The short range communication module is any one of Bluetooth, infrared communication, UWB, ZigBee communication module. The method of claim 1,
The wireless power receiving module and the load device is characterized in that the fluid is disposed inside the fluid in the housing. The method of claim 1,
At least a portion of the housing is provided with a non-metallic window, the wireless power transmission module is characterized in that the wireless power transmission unit is mounted to transmit the wireless power into the housing through the window. The method of claim 1,
The window is a wireless power transmission device, characterized in that consisting of a transparent material.

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