KR102410214B1 - Energy harvesting apparatus - Google Patents

Abstract

It relates to an energy collection device capable of collecting power using photothermal characteristics, from a heat generating unit generating heat by light in a specific wavelength band, a thermoelectric conversion unit converting heat generated from the heat generating unit into electricity, and a thermoelectric conversion unit The power supply unit that collects the converted electricity, stores power and supplies the stored power, and checks whether the power stored in the power supply reaches a preset reference value, and controls the power supply so that the stored power is output when the stored power reaches the reference value. It may include a control unit.

Description

Energy Harvesting Device {ENERGY HARVESTING APPARATUS}

The present invention relates to an energy collecting device, and more particularly, to an energy collecting device capable of collecting electric power using photothermal characteristics.

Recently, various IoT wireless sensor products are being developed.

One of the development issues of these devices is a power problem, and mainly uses a battery due to power consumption.

However, due to restrictions according to the size and capacity of the battery, not only the size and design of the product, but also periodic replacement or charging is required.

In order to solve this problem, energy harvesting technologies that can use various energy sources existing in the vicinity, such as light, heat, and mechanical energy, are being developed.

However, the energy harvesting technology is subject to many restrictions on the use environment.

For example, in the case of a solar cell, it cannot be used in an underground environment without light, and in the case of a thermoelectric device, it can be used only in a specific location where heat is generated.

Based on this background, in the case of IoT wireless sensors using energy harvesting technology, the on-demand type of energy collection device that can drive the sensor by generating and delivering energy only when the user needs the sensor value Development is required, and the development of an energy collection device capable of generating and collecting energy without being affected by a specific environment is required.

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems. Another object is to convert heat generated by light into electric power using a heat generating unit and a thermoelectric converter to collect and supply power when the collected electric power reaches a reference value, so that a specific device such as a sensor or the like is required according to the user's request. To provide an on-demand type energy collecting device that can supply power to

Another object is to provide an energy collection device capable of supplying power even in an environment without an energy source by forming a wireless sensor power supply module by integrally packaging a wireless sensor, a heating unit, a thermoelectric conversion unit, a power supply unit, and a control unit do.

Another object of the present invention is to provide an energy collecting device capable of efficiently collecting electric power by applying a heat generating material in which at least one heat generating agent and an organic material are mixed, thereby improving heat generation characteristics and preventing deterioration.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

The energy collection device according to an embodiment of the present invention collects electricity converted from a heat generating unit generating heat by light of a specific wavelength band, a thermoelectric conversion unit converting heat generated from the heat generating unit into electricity, and a thermoelectric conversion unit A power supply unit that stores power and supplies stored power, and a control unit that checks whether the power stored in the power supply unit reaches a preset reference value, and controls the power supply unit so that the stored power is output when the stored power reaches the reference value Can include have.

Here, the heating unit may include a material that generates heat by absorbing light in a wavelength range of about 900 nm to 1000 nm.

In addition, the heating part may be a mixture of at least one heating agent and an organic material.

Next, the power supply unit may include a storage unit that collects electricity converted from the thermoelectric conversion unit and stores power, and a switching unit that is switched according to a control signal so that the power stored in the storage unit is output.

Next, the control unit senses the power stored in the storage unit of the power supply unit, compares whether the sensed power reaches a preset reference voltage, as a result of the comparison, when the stored power reaches the reference voltage, the switching unit of the power supply unit is turned on to output the power stored in the storage unit of the power supply unit, and when the stored power reaches the reference voltage, the switching unit of the power supply unit is turned off to block the output of the power stored in the storage unit of the power supply unit.

In addition, the present invention may further include a heat transfer unit disposed between the heat generating unit and the thermoelectric conversion unit.

Here, in the heat transfer unit, a plurality of heat transfer layers having different thermal conductivity may be stacked, and a heat transfer layer having high thermal conductivity is disposed as the plurality of heat transfer layers move away from the heat generating unit and close to the thermoelectric conversion unit, and thermoelectric conversion. A heat transfer layer having a low thermal conductivity may be disposed as it moves away from the unit and is adjacent to the heat generating unit.

Next, the present invention may further include a transparent insulating portion disposed around the heat generating portion to block the outflow of internal heat.

Here, the transparent heat insulating part may be formed with an anti-reflective (AR) coating film on the inner surface facing the heating part.

Subsequently, the present invention may further include a wireless sensor that performs a sensing function based on the supplied power when power is supplied from the power supply unit.

Here, the wireless sensor may be integrally packaged together with a heating unit, a thermoelectric conversion unit, a power supply unit, and a control unit to form a wireless sensor power supply module.

And, the present invention may further include a light irradiator for irradiating light in a specific wavelength band to the heating unit of the wireless sensor power supply module.

Here, the light irradiation unit may include a direction control unit for controlling the emission direction of the generated light.

In addition, when there are a plurality of wireless sensor power supply modules, the light irradiation unit may control the emission direction of light according to the control of the direction control unit to sequentially irradiate light to the heating unit of each wireless sensor power supply module.

The effect of the energy collecting device according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, heat generated by light is converted into electric power by using a heat generating unit and a thermoelectric conversion unit and collected, and when the collected power reaches a reference value, power is supplied by the user's request Accordingly, an on-demand type of driving capable of supplying power to a specific device such as a sensor is possible.

In addition, according to at least one of the embodiments of the present invention, by integrally packaging the wireless sensor, the heat generating unit, the thermoelectric conversion unit, the power supply unit and the control unit to form a wireless sensor power supply module, power is supplied even in an environment without an energy source can supply

In addition, according to at least one of the embodiments of the present invention, by applying a heat generating material in which at least one heat generating agent and an organic material are mixed, heat generation characteristics are improved and deterioration phenomenon is prevented, so that electric power can be efficiently collected.

Therefore, the present invention is applied to various places, such as an environment without a surrounding energy source for energy harvesting from light, heat, etc., an environment with toxic gas harmful to the human body such as a chimney, an environment with a wide area that cannot be individually connected by wire, etc. This is possible.

The present invention supplements energy harvesting technology, which has many environmental restrictions, and enables manufacturing of an on-demand type device that can be used as necessary, thereby expanding the field of application of energy harvesting.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of example only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is a block diagram illustrating an energy collecting device according to the present invention.
FIG. 2 is a view for explaining the heat generating unit of FIG. 1 .
FIG. 3 is a block diagram illustrating the power supply unit of FIG. 1 .
FIG. 4 is a circuit configuration diagram for explaining the power supply unit of FIG. 1 .
FIG. 5 is a block diagram illustrating the control unit of FIG. 1 .
FIG. 6 is a circuit configuration diagram for explaining the control unit of FIG. 1 .
7 is a block diagram illustrating an energy collecting device according to a second embodiment of the present invention.
8 and 9 are structural cross-sectional views illustrating the heat transfer unit of FIG. 7 .
10 is a view for explaining a transparent insulating portion of the energy collecting device according to the present invention.
11 is a front perspective view showing a wireless sensor power supply module to which a wireless sensor is attached.
12 is a rear perspective view showing a wireless sensor power supply module to which a wireless sensor is attached.
13 is an exploded view illustrating a wireless sensor power supply module to which a wireless sensor is attached;
FIG. 14 is a chart for explaining the heating characteristics according to the mixing ratio of the heating part of FIG. 1 .
15 is a diagram illustrating an operation timing of a wireless sensor according to power supply of a wireless sensor power supply module.
16 is a diagram for explaining an energy collection device including a plurality of wireless sensor power supply modules.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numbers regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

1 is a block diagram illustrating an energy collecting device according to a first embodiment of the present invention.

As shown in FIG. 1 , the energy collecting device according to the present invention may include a heating unit 110 , a thermoelectric conversion unit 120 , a power supply unit 130 , and a control unit 140 .

Here, the heat generating unit 110 may generate heat by light of a specific wavelength band.

For example, the heat generating unit 110 may generate heat of a maximum temperature when light of a near-infrared wavelength band is incident.

Here, the near-infrared wavelength band may be about 900 nm to about 1000 nm, but is not limited thereto.

That is, the heating unit 110 may include a material that generates heat by absorbing light in a wavelength range of about 900 nm to about 1000 nm.

Also, the heat generating unit 110 may be formed of a mixture of at least one heat generating agent and an organic material.

For example, the exothermic agent, graphene oxide (GO), hexagonal-boron nitride (hexagonal-boron nitride, h-BN), graphene (graphene), carbon nanotubes (CNTs) of It may be at least one, but is not limited thereto.

In addition, the organic material may include polydimethylsiloxane (PDMS), but is not limited thereto.

In addition, in the heat generating unit 110, a mixing ratio of the heat generating agent and the organic material may be 1:20 to 1:100.

The reason is that if the amount of the organic material in the heat generating unit 110 is too small, a deterioration phenomenon occurs and the lifespan is reduced.

Also, the heating unit 110 may be of a film type having a thickness of about 0.1 mm to about 3 mm.

The reason is that, if the thickness of the heating part 110 is too thin, a deterioration phenomenon may occur and the lifespan may be reduced, and if the thickness of the heating part 110 is too thick, the heating characteristics may be deteriorated.

Next, the thermoelectric conversion unit 120 may convert heat generated from the heat generating unit 110 into electricity.

Subsequently, the power supply unit 130 may collect electricity converted from the thermoelectric conversion unit 120 , store power, and supply the stored power.

Here, the power supply unit 130 may include a storage unit that collects electricity converted from the thermoelectric conversion unit 120 and stores power, and a switching unit that is switched according to a control signal so that the power stored in the storage unit is output. .

For example, the storage unit of the power supply unit 130 may include a capacitor for storing power input from the thermoelectric conversion unit 120 and a diode electrically connected between the output terminal of the thermoelectric conversion unit 120 and the input terminal of the capacitor. can

In addition, the control unit 140 may check whether the power stored in the power supply unit 130 reaches a preset reference value, and control the power supply unit 130 to output the stored power when the stored power reaches the reference value.

Here, the controller 140 senses the power stored in the storage unit of the power supply unit 130 and compares whether the sensed power reaches a preset reference voltage, and as a result of the comparison, when the stored power reaches the reference voltage, the power supply unit The switching unit of 130 is turned on to output power stored in the storage unit of the power supply unit 130, and when the stored power reaches the reference voltage, the switching unit of the power supply unit 130 is turned off to turn off the power supply unit ( 130) may block the output of the power stored in the storage unit.

For example, the control unit 140 compares whether a sensing unit sensing power stored in the storage unit of the power supply unit 130, a reference voltage generating unit generating a predetermined reference voltage, and the sensed power reaches a reference voltage. It may include a control signal generator for generating a control signal.

Here, the sensing unit may include a resistor connected in parallel with the capacitor of the power supply unit 130 .

In addition, the reference voltage generator may include a division resistor in which a first resistor and a second resistor are connected in series to generate a reference voltage.

For example, the reference voltage Ref is Ref = X * {R2/(R1+R2)} (where X is a voltage value applied to the divider resistor, R1 is a first resistance value, R2 is a second resistance value) It can be calculated by a formula determined by .

Next, the control signal generator may include a comparator for generating a control signal by comparing whether the power sensed by the sensing unit reaches a reference voltage, and a diode for transmitting the control signal generated from the comparator to the power supply unit 130 . .

In some cases, the present invention may further include a heat transfer unit disposed between the heat generating unit 110 and the thermoelectric conversion unit 120 .

Here, the heat transfer unit, may be a thermally conductive grease (grease), but is not limited thereto.

As an example, the heat transfer unit may be a single layer having a predetermined thermal conductivity, but in another case, a plurality of heat transfer layers having different thermal conductivity may be stacked.

Here, as the plurality of heat transfer layers are farther from the heat generating unit 110 and closer to the thermoelectric conversion unit 120 , a heat transfer layer having high thermal conductivity is disposed, and the heat transfer layer is further away from the thermoelectric conversion unit 120 and the heat generating unit 110 . A heat transfer layer having a lower thermal conductivity may be disposed closer to the .

As another case, the present invention may further include a transparent heat insulating unit disposed around the heat generating unit 110 to block the outflow of internal heat.

Here, the transparent heat insulating unit, an anti-reflection (AR) coating film may be formed on the inner surface facing the heating unit 110 .

As another case, the present invention may further include a wireless sensor that performs a sensing function based on the supplied power when power is supplied from the power supply unit 130 .

Here, the wireless sensor may be integrally packaged together with the heating unit 110 , the thermoelectric conversion unit 120 , the power supply unit 130 , and the control unit 140 to form a wireless sensor power supply module.

In some cases, the wireless sensors may be individually separated and powered by the energy harvesting device of the present invention.

In addition, the present invention may supply power required for devices performing various functions in addition to the wireless sensor.

As another case, the present invention may further include a light irradiator for irradiating light in a specific wavelength band to the heating unit 110 of the wireless sensor power supply module.

Here, the light irradiation unit may be disposed at a predetermined distance from the wireless sensor power supply module to irradiate light to the heat generating unit 110 of the wireless sensor power supply module.

In some cases, the light irradiation unit may include a direction control unit for controlling the emission direction of the generated light.

For example, when there are a plurality of wireless sensor power supply modules, the light irradiation unit may control the emission direction of light according to the control of the direction control unit to sequentially irradiate light to the heating unit of each wireless sensor power supply module.

For example, when a plurality of wireless sensor power supply modules are disposed in the periphery of the light irradiation unit, the light irradiation unit may sequentially radiate light to each wireless sensor power supply module while rotating by the direction control unit.

In this case, each wireless sensor power supply module that receives the light emitted from the light irradiation unit, the heat generating unit 110 generates heat by the received light, converts the generated heat into power to supply power, wirelessly It can perform a sensor function.

Accordingly, the present invention converts heat generated by light into electric power using a heat generating unit and a thermoelectric conversion unit and collects it, and supplies power when the collected power reaches a reference value. On-demand type driving that can supply power to the device is possible.

In addition, according to the present invention, by integrally packaging the wireless sensor, the heat generating unit, the thermoelectric conversion unit, the power supply unit and the control unit to form a wireless sensor power supply module, power can be supplied even in an environment without an energy source.

In addition, in the present invention, by applying a heat generating material in which at least one heat generating agent and an organic material are mixed, heat generation characteristics are improved, and power can be efficiently collected by preventing deterioration.

In addition, the present invention is applied to various places, such as an environment where there is no surrounding energy source for energy harvesting from light, heat, etc., an environment with toxic gas harmful to the human body such as a chimney, an environment with a wide place that cannot be individually connected by wire, etc. This is possible.

The present invention supplements energy harvesting technology, which has many environmental restrictions, and enables manufacturing of an on-demand type device that can be used as necessary, thereby expanding the field of application of energy harvesting.

FIG. 2 is a view for explaining the heat generating unit of FIG. 1 .

2, in the energy collecting device of the present invention, the heat generating unit 110, when light of a specific wavelength band is incident, heat may be generated by a chemical reaction.

For example, the heating unit 110 may use a material capable of generating heat of a maximum temperature when light of a near-infrared wavelength band is incident.

Here, the near-infrared wavelength band may be about 900 nm to about 1000 nm, but is not limited thereto.

That is, the heating unit 110 may include a material that generates heat by absorbing light in a wavelength range of about 900 nm to about 1000 nm.

Also, the heat generating unit 110 may be formed of a mixture of at least one heat generating agent 112 and an organic material 114 .

For example, the heating agent 112 is, graphene oxide (GO), hexagonal-boron nitride (hexagonal-boron nitride, h-BN), graphene (graphene), carbon nanotubes (carbon nanotubes, CNTs), but may be at least one, but is not limited thereto.

In addition, the organic material 114 may include polydimethylsiloxane (PDMS), but is not limited thereto.

In addition, in the heat generating unit 110 , a mixing ratio of the heat generating agent 112 and the organic material 114 may be 1:20 to 1:100.

The reason is that if the amount of the organic material 114 in the heat generating unit 110 is too small, a deterioration phenomenon occurs and the lifespan is reduced. because it can

In addition, the heating unit 110 may be a film type having a thickness t of about 0.1 mm to about 3 mm.

The reason is that if the thickness t of the heating part 110 is too thin, a deterioration phenomenon may occur and the lifespan may be reduced, and if the thickness t of the heating part 110 is too thick, the heating characteristics may be deteriorated.

Accordingly, in the present invention, by applying a heat generating material in which at least one heat generating agent and an organic material are mixed, heat generation characteristics are improved and deterioration phenomenon is prevented, thereby efficiently collecting electric power.

FIG. 3 is a block diagram illustrating the power supply unit of FIG. 1 , and FIG. 4 is a circuit diagram illustrating the power supply unit of FIG. 1 .

As shown in FIG. 3 , the power supply unit 130 may collect electricity converted from the thermoelectric converter, store power, and supply the stored power.

Here, the power supply unit 130 may include a storage unit 132 and a switching unit 134 .

The storage unit 132 of the power supply unit 130 collects electricity converted from the thermoelectric conversion unit and stores power, and the switching unit 134 of the power supply unit 130 stores the power stored in the storage unit 132 . It may be switched according to a control signal to be output.

For example, as shown in FIG. 4 , the storage unit 132 of the power supply unit 130 may include a capacitor 132 - 2 for storing power input from the thermoelectric conversion unit.

In addition, the power supply unit 130 may include a diode 132-1 electrically connected between the output terminal of the thermoelectric converter and the input terminal of the capacitor 132-2.

FIG. 5 is a block diagram illustrating the control unit of FIG. 1 , and FIG. 6 is a circuit diagram illustrating the control unit of FIG. 1 .

As shown in FIG. 5 , the controller 140 may check whether the power stored in the power supply reaches a preset reference value, and control the power supply so that the stored power is output when the stored power reaches the reference value.

For example, the controller 140 may include a sensing unit 142 sensing power stored in a storage unit of the power supply unit, a reference voltage generating unit 144 generating a predetermined reference voltage, and the sensed power reaching the reference voltage. It may include a control signal generating unit 146 that generates a control signal by comparing the .

Here, as shown in FIG. 6 , the sensing unit 142 may include a resistor 142 connected in parallel with the capacitor of the power supply unit 132 .

In addition, the reference voltage generator 144 may include a division resistor in which a first resistor R1 and a second resistor R2 are connected in series to generate a reference voltage.

For example, the reference voltage Ref is Ref = X * {R2/(R1+R2)} (where X is a voltage value applied to the divider resistor, R1 is a first resistance value, R2 is a second resistance value) It can be calculated by a formula determined by .

Next, the control signal generating unit 146 compares whether the power sensed by the sensing unit 142 reaches a reference voltage to generate a control signal by comparing the comparator 146-1 and the comparator 146-1 generated from the comparator 146-1. A diode 146 - 2 for transmitting a control signal to the switching unit of the power supply unit 130 may be included.

That is, the controller 140 senses the power stored in the storage unit of the power supply unit 132 through the sensing unit 142 , generates a preset reference voltage through the reference signal generation unit 144 , and generates a control signal It is compared whether the power sensed through the unit 146 reaches a preset reference voltage, and as a result of the comparison, when the stored power reaches the reference voltage, the switching unit of the power supply unit is turned on and the power stored in the storage unit of the power supply unit is turned on. output, and when the stored power reaches the reference voltage, the switching unit of the power supply unit may be turned off to cut off the output of the power stored in the storage unit of the power supply unit.

Accordingly, the present invention converts heat generated by light into electric power using a heat generating unit and a thermoelectric conversion unit and collects it, and supplies power when the collected power reaches a reference value. On-demand type driving that can supply power to the device is possible.

7 is a block diagram illustrating an energy collecting device according to a second embodiment of the present invention, and FIGS. 8 and 9 are structural cross-sectional views showing the heat transfer unit of FIG. 7 .

As shown in FIG. 7 , the energy collecting device according to the second embodiment of the present invention includes a heat generating unit 110 , a heat transfer unit 150 , a thermoelectric conversion unit 120 , a power supply unit 130 , and a control unit ( 140) may be included.

Here, since the remaining components except for the heat transfer unit 150 are the same as those of the first embodiment of the present invention, a detailed description thereof will be omitted.

In the second embodiment of the present invention, the heat transfer unit 150 may be disposed between the heat generating unit 110 and the thermoelectric conversion unit 120 .

Here, the heat transfer unit 150 may be a thermally conductive grease, but is not limited thereto.

For example, the heat transfer unit 150 may be a single layer having a predetermined thermal conductivity, but in another case, a plurality of heat transfer layers having different thermal conductivity may be stacked.

As shown in FIG. 8 , the heat transfer unit 150 may be disposed between the heat generating unit 110 and the thermoelectric conversion unit 120 and may be a single layer having a predetermined thermal conductivity.

Here, the heat transfer unit 150 may transfer the heat generated by the heat generating unit 110 to the thermoelectric conversion unit 120 .

In some cases, as shown in FIG. 9 , the heat transfer unit 150 is disposed between the heat generating unit 110 and the thermoelectric conversion unit 120 , and a plurality of heat transfer layers having different thermal conductivity may be stacked. may be

Here, in the plurality of heat transfer layers 150 , a heat transfer layer having high thermal conductivity is disposed as it moves away from the heat generating unit 110 and is close to the thermoelectric conversion unit 120 , and is farther from the thermoelectric conversion unit 120 and the heat generating unit is disposed. A heat transfer layer having a lower thermal conductivity may be disposed closer to 110 .

For example, the plurality of heat transfer layers 150 may include a first heat transfer layer 152 , a second heat transfer layer 154 , and a third heat in a direction from the heat generating unit 110 to the thermoelectric conversion unit 120 . The transport layer 156 may be sequentially stacked.

Here, among the plurality of heat transfer layers 150 , the first heat transfer layer 152 adjacent to the heat generating unit 110 has the lowest thermal conductivity, and the third heat transfer layer 156 adjacent to the thermoelectric conversion unit 120 . may have the highest thermal conductivity.

The reason for disposing the plurality of heat transfer layers having different thermal conductivity is that the heat generated in the heat generating unit 110 can be efficiently and uniformly and rapidly transferred to the thermoelectric conversion unit 120 without loss.

10 is a view for explaining the transparent insulating portion of the energy collecting device according to the present invention.

As shown in FIG. 10 , the present invention may further include a transparent insulating unit 160 disposed around the heat generating unit 110 to block the outflow of internal heat.

Here, the transparent heat insulating unit 160, an anti-reflection (AR) coating film 162 may be formed on the inner surface facing the heating unit 110 .

The reason for forming the anti-reflection coating film is that light in a specific wavelength band incident from the outside is directly incident on the heating unit 110 without being reflected and lost by the anti-reflection coating film, thereby reducing energy loss and increasing efficiency.

11 to 13 are views for explaining an energy collection device according to a third embodiment of the present invention, and FIG. 11 is a front perspective view showing a wireless sensor power supply module to which a wireless sensor is attached, and FIG. It is a rear perspective view showing a wireless sensor power supply module, and FIG. 13 is an exploded view showing a wireless sensor power supply module to which a wireless sensor is attached.

11 to 13 , the present invention may further include a wireless sensor 170 that performs a sensing function based on the supplied power when power is supplied from the power supply unit.

Here, the wireless sensor 170 is integrally packaged with the heating unit 110 , the heat transfer unit 150 , the thermoelectric conversion unit 120 , the transparent insulation unit 160 , the power supply unit and the control unit to supply power to the wireless sensor. A module 180 may be formed.

In some cases, the wireless sensor 170 may be individually separated and receive power through the energy collecting device of the present invention.

In addition, the present invention may supply power required for devices performing various functions in addition to the wireless sensor 170 .

As another case, the present invention may further include a light irradiator for irradiating light in a specific wavelength band to the heating unit 110 of the wireless sensor power supply module 180 .

Here, the light irradiation unit may be disposed at a predetermined distance from the wireless sensor power supply module to irradiate light to the heat generating unit 110 of the wireless sensor power supply module.

In the wireless sensor power supply module 180 configured as described above, the heat generating unit 110 may generate heat by light in the near-infrared wavelength band.

Here, the near-infrared wavelength band may be about 900 nm to about 1000 nm, but is not limited thereto.

That is, the heating unit 110 may include a material that generates heat by absorbing light in a wavelength range of about 900 nm to about 1000 nm.

Also, the heat generating unit 110 may be formed of a mixture of at least one heat generating agent and an organic material.

For example, the exothermic agent, graphene oxide (GO), hexagonal-boron nitride (hexagonal-boron nitride, h-BN), graphene (graphene), carbon nanotubes (CNTs) of It may be at least one, but is not limited thereto.

In addition, the organic material may include polydimethylsiloxane (PDMS), but is not limited thereto.

In addition, in the heat generating unit 110, a mixing ratio of the heat generating agent and the organic material may be 1:20 to 1:100.

The reason is that if the amount of the organic material in the heat generating unit 110 is too small, a deterioration phenomenon occurs and the lifespan is reduced.

Also, the heating unit 110 may be of a film type having a thickness of about 0.1 mm to about 3 mm.

The reason is that, if the thickness of the heating part 110 is too thin, a deterioration phenomenon may occur and the lifespan may be reduced, and if the thickness of the heating part 110 is too thick, the heating characteristics may be deteriorated.

Next, the thermoelectric conversion unit 120 may convert heat generated from the heat generating unit 110 into electricity.

Next, a heat transfer unit 150 may be further disposed between the heat generating unit 110 and the thermoelectric conversion unit 120 .

Here, the heat transfer unit 150 may be a thermally conductive grease, but is not limited thereto.

For example, the heat transfer unit 150 may be a single layer having a predetermined thermal conductivity, but in another case, a plurality of heat transfer layers having different thermal conductivity may be stacked.

Next, the power supply unit may collect electricity converted from the thermoelectric conversion unit 120 , store power, and supply the stored power.

In addition, the controller may check whether the power stored in the power supply unit reaches a preset reference value, and control the power supply unit to output the stored power when the stored power reaches the reference value.

Here, the control unit senses the power stored in the storage unit of the power supply unit, compares whether the sensed power reaches a preset reference voltage, and as a result of the comparison, when the stored power reaches the reference voltage, the switching unit of the power supply unit 130 is It is turned on to output the power stored in the storage unit of the power supply unit, and when the stored power reaches the reference voltage, the switching unit of the power supply unit is turned off to block the output of the power stored in the storage unit of the power supply unit.

In addition, the transparent heat insulating unit 160 may be disposed around the heat generating unit 110 to block the outflow of internal heat.

Here, the transparent heat insulating unit 160, an anti-reflection (AR) coating film may be formed on the inner surface facing the heating unit 110 .

In this way, the wireless sensor power supply module 180 for receiving the light emitted from the light irradiation unit, the heat generating unit 110 generates heat by the received light, and converts the generated heat into power to supply power. , it can perform a wireless sensor function.

Accordingly, the present invention converts heat generated by light into electric power using a heat generating unit and a thermoelectric conversion unit and collects it, and supplies power when the collected power reaches a reference value. On-demand type driving that can supply power to the device is possible.

In addition, according to the present invention, by integrally packaging the wireless sensor, the heat generating unit, the thermoelectric conversion unit, the power supply unit and the control unit to form a wireless sensor power supply module, power can be supplied even in an environment without an energy source.

In addition, in the present invention, by applying a heat generating material in which at least one heat generating agent and an organic material are mixed, heat generation characteristics are improved, and power can be efficiently collected by preventing deterioration.

In addition, the present invention is applied to various places, such as an environment where there is no surrounding energy source for energy harvesting from light, heat, etc., an environment with toxic gas harmful to the human body such as a chimney, an environment having a wide place that cannot be individually connected by wire. This is possible.

The present invention supplements energy harvesting technology, which has many environmental restrictions, and enables manufacturing of an on-demand type device that can be used as necessary, thereby expanding the field of application of energy harvesting.

FIG. 14 is a chart for explaining the heating characteristics according to the mixing ratio of the heating part of FIG. 1 .

As shown in FIG. 14 , it can be seen that, in the energy collection device according to the present invention, the heating characteristic is adjusted according to the material used for the heating part, and the amount of power generated accordingly is also varied.

The heating part of the energy collection device may include a material that absorbs light in a wavelength range of about 900 nm to about 1000 nm to generate heat, and the heating part may be made of a mixture of at least one heating agent and an organic material.

Here, the heating agent, graphene oxide (graphene oxide, GO), hexagonal-boron nitride (hexagonal-boron nitride, h-BN), graphene (graphene), carbon nanotubes (carbon nanotubes, CNTs) at least any It may be one, but is not limited thereto.

In addition, the organic material may include polydimethylsiloxane (PDMS), but is not limited thereto.

In addition, in the heat generating unit 110, a mixing ratio of the heat generating agent and the organic material may be 1:20 to 1:100.

The reason is that if the amount of the organic material in the heat generating unit 110 is too small, a deterioration phenomenon occurs and the lifespan is reduced.

Also, the heating unit 110 may be of a film type having a thickness of about 0.1 mm to about 3 mm.

The reason is that, if the thickness of the heating part 110 is too thin, a deterioration phenomenon may occur and the lifespan may be reduced, and if the thickness of the heating part 110 is too thick, the heating characteristics may be deteriorated.

For example, as shown in FIG. 14 , a heat generating unit manufactured by mixing graphene oxide (GO) as a heat generating agent and polydimethylsiloxane (PDMS) as an organic material in a mixing ratio of about 1: 100 is applied to the energy collecting device. In the case of arrangement, when infrared rays having a wavelength of about 980 nm are incident on the heating part, the surface temperature of the heating part rises to about 81.3 degrees, and when the heat of about 81.3 degrees is converted into electricity, power of about 230.16 mV can be collected.

In addition, as shown in FIG. 14 , a heat generating unit manufactured by mixing graphene oxide (GO), which is a heat generating agent, and polydimethylsiloxane (PDMS), an organic material, in a mixing ratio of about 1: 20 to be disposed in the energy collection device. In this case, when infrared rays having a wavelength of about 980 nm are incident on the heating part, the surface temperature of the heating part rises by about 150 degrees or more, and when heat of about 150 degrees or more is converted into electricity, power of about 235.06 mV can be collected.

Accordingly, in the present invention, by applying a heat generating material in which at least one heat generating agent and an organic material are mixed, heat generation characteristics are improved and deterioration phenomenon is prevented, thereby efficiently collecting electric power.

15 is a diagram illustrating an operation timing of a wireless sensor according to power supply of a wireless sensor power supply module.

As shown in FIG. 15 , the present invention may include a wireless sensor that performs a sensing function based on the supplied power when power is supplied from the power supply unit.

Here, the wireless sensor may be integrally packaged with an energy collection device including a heat generating unit, a thermoelectric conversion unit, a power supply unit, and a control unit to form a wireless sensor power supply module.

The control unit of the energy collection device may check whether the power stored in the power supply unit reaches a preset reference value, and when the stored power reaches the reference value, control the power supply unit to output the stored power to the wireless sensor.

Here, the controller senses the power stored in the storage unit of the power supply unit, compares whether the sensed power reaches a preset reference voltage, and turns on the switching unit of the power supply unit when the stored power reaches the reference voltage as a result of the comparison. ) to output the power stored in the storage unit of the power supply unit to the wireless sensor, and when the stored power reaches the reference voltage, the switching unit of the power supply unit is turned off to block the output of the power stored in the storage unit of the power supply unit.

Accordingly, the wireless sensor may be operated by receiving power from the power supply unit under the control of the controller to perform a sensor function.

That is, the wireless sensor may be driven in response to the power output time of the power supply unit.

The present invention can drive a device that performs various functions in addition to the wireless sensor.

16 is a diagram for explaining an energy collection device including a plurality of wireless sensor power supply modules.

As shown in FIG. 16 , the present invention emits light in a specific wavelength band to a plurality of wireless sensor power supply modules 180 equipped with a wireless sensor 170 and a heat generating unit disposed in each wireless sensor power supply module 170 . It may include a light irradiator 190 to irradiate.

Here, the light irradiator 190 may be disposed at a predetermined distance from the wireless sensor power supply module 180 to irradiate light to the heating part of the wireless sensor power supply module 180 .

In some cases, the light irradiation unit 190 may include a direction control unit 192 for controlling the emission direction of the generated light.

For example, when there are a plurality of wireless sensor power supply modules 180 , the light irradiation unit 190 controls the emission direction of light according to the control of the direction control unit 192 to the heating unit of each wireless sensor power supply module 180 . Light may be irradiated sequentially.

That is, when a plurality of wireless sensor power supply modules 180 are disposed in the periphery of the light irradiation unit 190 , the light irradiation unit 190 is rotated by the direction control unit 192 and sequentially to each wireless sensor power supply module 180 . can be irradiated with light.

In this case, each wireless sensor power supply module 180 that receives the light emitted from the light irradiator 190 generates heat by the received light, and converts the generated heat into power to supply power. , it can perform a wireless sensor function.

Accordingly, the present invention converts heat generated by light into electric power using a heat generating unit and a thermoelectric conversion unit and collects it, and supplies power when the collected power reaches a reference value. On-demand type driving that can supply power to the device is possible.

In addition, according to the present invention, by integrally packaging the wireless sensor, the heat generating unit, the thermoelectric conversion unit, the power supply unit and the control unit to form a wireless sensor power supply module, power can be supplied even in an environment without an energy source.

In addition, in the present invention, by applying a heat generating material in which at least one heat generating agent and an organic material are mixed, heat generation characteristics are improved, and power can be efficiently collected by preventing deterioration.

In addition, the present invention is applied to various places, such as an environment where there is no surrounding energy source for energy harvesting from light, heat, etc., an environment with toxic gas harmful to the human body such as a chimney, an environment having a wide place that cannot be individually connected by wire. This is possible.

The present invention supplements energy harvesting technology, which has many environmental restrictions, and enables manufacturing of an on-demand type device that can be used as necessary, thereby expanding the field of application of energy harvesting.

Above, it is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

The present invention described above can be implemented as computer-readable codes on a medium in which a program is recorded. The computer-readable medium includes all types of recording devices in which data readable by a computer system is stored. Examples of the computer-readable medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., and may also be implemented in the form of a carrier wave (eg, transmission over the Internet). also includes In addition, the computer may include a control unit of the terminal.

Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

100: energy collecting device
110: heating part
120: thermoelectric conversion unit
130: power supply
140: control unit
150: heat transfer unit

Claims (10)

a heat generating unit generating heat by light in a specific wavelength band;
a thermoelectric conversion unit converting heat generated from the heating unit into electricity;
a heat transfer unit disposed between the heat generating unit and the thermoelectric conversion unit;
A transparent insulating unit disposed around the heating unit to block the leakage of internal heat; A power supply unit for collecting electricity converted from the thermoelectric conversion unit, storing power, and supplying the stored power; and,
A control unit for checking whether the power stored in the power supply unit reaches a preset reference value, and controlling the power supply unit to output the stored power when the stored power reaches the reference value,
The heat transfer unit
A plurality of heat transfer layers having different thermal conductivity,
In the plurality of heat transfer layers, a heat transfer layer having high thermal conductivity is disposed as it moves away from the heat generating unit and is adjacent to the thermoelectric conversion unit, and a heat transfer layer having low thermal conductivity as it moves away from the thermoelectric conversion unit and close to the heat generating unit is disposed. placed,
The transparent insulation
It includes an anti-reflective coating film disposed on the inner surface facing the heating unit,
The anti-reflection coating layer reflects the light of the specific wavelength band incident from the outside, and energy collection device, characterized in that the incident to the heating unit. The method of claim 1, wherein the heating unit,
An energy collecting device, characterized in that when light of a near-infrared wavelength band is incident, heat having a maximum temperature is generated. The method of claim 1, wherein the heating unit,
An energy collecting device, characterized in that it is a mixture of at least one heat generating agent and an organic material. According to claim 3, wherein the mixing ratio of the heating agent and the organic material,
1: 20 to 1: 100, characterized in that the energy collection device. According to claim 1, wherein the power supply unit,
a storage unit for collecting electricity converted from the thermoelectric conversion unit and storing power; and,
and a switching unit switched according to a control signal so that the power stored in the storage unit is output. According to claim 5, wherein the control unit,
The power stored in the storage unit of the power supply is sensed, and whether the sensed power reaches a preset reference voltage is compared, and as a result of the comparison, when the stored power reaches the reference voltage, the switching unit of the power supply unit is turned on ( on) to output the power stored in the storage unit of the power supply, and when the stored power reaches the reference voltage, the switching unit of the power supply unit is turned off to block the output of the power stored in the storage unit of the power supply unit Energy collection device, characterized in that. According to claim 1, wherein the control unit,
a sensing unit for sensing power stored in the storage unit of the power supply unit;
a reference voltage generator generating a predetermined reference voltage; and,
and a control signal generator configured to generate a control signal by comparing whether the sensed power reaches the reference voltage. delete delete According to claim 1,
When power is supplied from the power supply unit, the energy collection device further comprising a wireless sensor that performs a sensing function based on the supplied power.

Images