TWI418085B - High power led illuminating method and system having microbial fuel cell - Google Patents

Description

High-power LED lighting system and method with microbial fuel cell

The invention relates to a high-power LED lighting system and method with a microbial fuel cell, in particular to using a filling waste water as a fuel to generate electricity, to illuminate an LED lamp as an indoor emergency lighting or outdoor lighting, and to assist with PV Achieve complementary functions. The heat dissipation problem of the high-brightness LED is designed to make the heat-conducting member of the LED light-emitting element immersed in the waste water to achieve the purpose of heat dissipation, to maintain the normal operating temperature of the high-brightness LED, and to direct some of the light source to the microorganism to promote the microbial fuel cell. Photosynthetic bacteria photosynthesis hydrogen production function, to achieve self-generation, light, green energy-saving, high efficiency purposes.

It is well known that a light-emitting diode (LED) is an injection electroluminescent device, which is generally made of a semiconductor such as phosphorous or zinc arsenide (GaAsP), as shown in FIG. Under the action of an applied electric field, the electro-mechanism caused by the recombination of electrons and holes converts a part of the energy into light energy, that is, a quantum effect, and the lattice oscillation generated by the non-radiative recombination converts the remaining energy into heat energy. With the growth of blue LED technology, the development of white LED technology has begun to show leapfrog growth in the past decade. LED efficiency has grown year after year since 2000 and has gradually surpassed existing lighting fixtures. In 2007, Nichia released amazing laboratory results, 169lm/W low-power white LEDs and 134 lm/W high-power LEDs. In July 2008, Osram also announced that its high-power LED technology level has exceeded the maximum efficiency to 136lm / W. And the current level of LED production in the global market. From the perspective of technology growth trend, the input of manpower and material resources has made the progress faster than the forecast period of the US Energy Bureau for at least two years. This is not only a symbol of the maturity of LED technology, but also a milestone, fully demonstrating the LED light source in lighting applications. Alternative potential and possibilities. For high power LEDs larger than 1W, the current electro-optic conversion efficiency is about 15%, and the remaining 85% is converted to thermal energy. The size of the LED chip is only 1mm x 1mm~2.5mm x 2.5mm, which means that the power density of the chip is very large. For a single LED, if the heat is concentrated in a small-sized wafer and cannot be effectively dissipated, the temperature of the wafer will rise, causing a non-uniform distribution of thermal stress, the luminous efficiency of the wafer, and the lasing efficiency of the phosphor powder. . According to research, when the temperature exceeds a certain value, the failure rate of the device will rise exponentially. For every 2 °C rise in component temperature, the reliability will drop by 10%. In order to ensure the lifetime of the device, the junction temperature of the PN junction is generally required to be below 110 °C. As the temperature of the PN junction rises, the wavelength of the white LED device will red-shift. According to statistics, at 10 ° C, the wavelength can be red shifted by 4-9 nm, resulting in a decrease in the absorption rate of YAG phosphor powder, and the total luminous intensity will reduce the white color chromaticity. At around room temperature, the LED's luminous intensity is reduced by about 1% for every 1 °C increase in temperature. When the device rises from ambient temperature to 120 °C, the brightness drops by as much as 35%. When multiple LEDs are densely arranged to form a white light illumination system, the heat dissipation problem is more serious. Therefore, solving the heat dissipation problem has been overcome by power LED applications.

Conventional high-power LED applications are widely used, such as car lights, projection lamps for projectors, and the like. High-power LEDs consume more than 0.4W, and because of the large amount of heat generated during operation, heat dissipation should be considered in use to avoid damage to high-power LEDs due to overheating. Because of the short heat conduction path of the conventional structure, the heat pipe can quickly dissipate the heat generated by the high-power LED through the heat dissipation fin, but the back-heating lamp must be in a good air circulation environment. In order to achieve a better natural convection heat dissipation effect of the heat sink fins. When the back-dissipating high-power LED lamp is used for lighting purposes, such as an embedded or a ceiling-mounted luminaire, the installed environment does not have good air circulation, and thus the heat dissipation effect is greatly reduced.

In order to improve the shortcomings of the aforementioned high-power LEDs, the inventors actively invested in research and development, and in view of the gradual shortage of global energy, energy conservation is very important, and thus developed a technology that can combine the relationship between microorganisms and light, and finally has the present invention. Research and development results of high-power LED lighting systems for microbial fuel cells.

According to the conventional microbial fuel cell (MFC), a bioelectrochemical device that directly converts the chemical energy of a fuel (organic substance) into electric energy by utilizing the catalytic action of microorganisms. MFC can produce electricity while oxidizing organic matter, especially in the field of wastewater treatment. Since most microorganisms carry out metabolism through respiration, in the process of metabolism and growth, glucose or other carbohydrates are fed, so that some of the electrochemically active microorganisms produce electrons, and electrons migrate to the anode through various routes. The circuit is transferred to the cathode and eventually reacts with oxygen and protons in the cathode region to form water. This directional migration produces current. Without considering the effects of reaction kinetics, enzyme kinetics and microbial effects, glucose oxidation is an exothermic entropy-increasing reaction at temperatures suitable for microbial survival, and the reaction can proceed spontaneously ‧ but due to limitations in reaction kinetics, Glucose as a substrate for power generation also requires enzyme catalysis. ‧ Microorganisms in the anode chamber of a microbial fuel cell act as a catalytic reaction. The thermodynamic efficiency of microbial fuel cells is very high. From a thermodynamic point of view, the reversible voltage of a microbial fuel cell with glucose as a substrate is a function of temperature and has a positive relationship with temperature: temperature rises, reversible voltage rises; temperature decreases, reversible voltage decreases, but reversible voltage The magnitude of the change with temperature is small. Since the temperature of the microbial fuel cell is generally between 20 and 50 ° C, the influence of temperature on the reversible voltage can be ignored. ‧ temperature not only affects the reversible voltage, but also affects the reaction rate and microbial activity of glucose oxidation, using glucose as a substrate. The optimal operating temperature for a microbial fuel cell is 35 °C.

At present, many technologies for microbial fuel cells have been completed and applied for patents. For example, the anaerobic hydrogen production process of the Republic of China Patent No. I256946, the method of generating electrical energy from microbial raw materials, No. 265479, discloses the integration of solar energy and the 201101648 A charging system for a sludge fuel cell, and a patent for a modified biofuel cell disclosed in No. 200915654. It is obvious that the microbial material battery has reached a certain level of technology and market value. However, at present, there has not been a lighting system in which a microbial fuel cell and a high-power LED lighting technology are combined to constitute an energy saving, power generation and luminous efficiency, environmental protection and a long service life.

A first object of the present invention is to provide a high power LED lighting system with a microbial fuel cell that is energy efficient, enhances efficiency, and increases service life. The technical means for achieving the object includes: at least one lamp socket; at least one LED light-emitting component, the LED light-emitting component is disposed on the lamp socket; and at least one heat-conducting component for guiding heat generated by the LED light-emitting component The LED light-emitting element; and a microbial fuel cell comprising a reaction tank, the reaction tank being filled with an aqueous solution of a reactant, the reactant aqueous solution comprising a predetermined amount of microorganisms and a predetermined amount of organic substances as a fuel, the microorganism pair The fuel catalyzes to generate electricity for the microbial fuel cell to supply the power source required for the LED light-emitting element to emit light, and the heat-conducting member extends into the aqueous solution of the reactant, so that the aqueous solution of the reactant absorbs the heat of the heat-conducting member, and on the other hand The heat conducting member cools down and otherwise provides the heat required by the microorganism.

A second object of the present invention is to provide a high power LED lighting system with a microbial fuel cell that is energy efficient, enhances power generation and luminous efficiency, and increases service life. The technical means for achieving the object includes: a lamp holder; at least one light guiding component, wherein the specific embodiment is an optical fiber; a plurality of LED lighting components, the plurality of LED lighting components are disposed on the lamp holder, and a part of the LED is illuminated The component is externally illuminated, and the other part of the LED lighting component is connected to an input end of the light guiding component, and the light emitted by the LED lighting component of the other part enters the light guiding component from the input end; the plurality of heat conducting components One end is connected to the lamp holder and adjacent to the LED light-emitting element for absorbing the heat generated by the LED light-emitting element and guiding away from the LED light-emitting element; and a microbial fuel cell comprising a reaction tank, and a reaction tank is provided at the center An ion exchange membrane or a proton exchange membrane (PEM), the reaction vessel is internally filled with an aqueous solution of a reactant, and the aqueous solution of the reactant comprises a predetermined amount of microorganisms and a predetermined amount of organic matter as a fuel, and the microorganism is catalyzed by the microorganism to catalyze the microorganism The fuel cell generates electric power for supplying the power required for the LED light-emitting element to emit light; the other end of the plurality of heat-conducting members protrudes into the aqueous solution of the reactant, so that The aqueous solution of the reactant absorbs heat of the heat-conducting member, and on the other hand, cools the heat-conducting member, and further provides heat required by the microorganism; and an output end of the light-guiding assembly is output and projected to the aqueous solution of the reactant to provide the microbial photosynthesis. Required.

A third object of the present invention is to provide a high power LED lighting system with a microbial fuel cell that is energy efficient, enhances power generation and luminous efficiency, and is environmentally friendly and has a long service life. The technical means for achieving the object includes: a lamp holder; at least one light guiding component; a plurality of LED lighting components, the plurality of LED lighting components are disposed on the lamp holder, and a part of the LED lighting component is externally illuminated, and the other The LED light-emitting component is connected to an input end of the light-guiding component, and the light emitted by the LED light-emitting component of the other part enters the light-guiding component from the input end; a plurality of heat-conducting components are connected at one end to the lamp socket And adjacent to the LED light-emitting element for absorbing heat generated by the LED light-emitting element and guiding away from the LED light-emitting element; a microbial fuel cell comprising a reaction tank, and an ion exchange membrane or a proton exchange membrane is disposed in the center of the reaction tank ( PEM), the reaction tank is filled with an aqueous solution of a reactant, and the aqueous solution of the reactant includes a predetermined amount of microorganisms and a predetermined amount of organic substances as a fuel, and the microorganisms fuel the fuel to generate electricity by the microorganisms, and the electric power is used for the electric power. Providing a power source for illuminating the LED light-emitting element; the other end of the plurality of heat-conducting members protrude into the aqueous solution of the reactant, so that the aqueous solution of the reactant absorbs the guide The heat of the heat is cooled on the one hand, and the heat required by the microorganism is provided on the other hand; and an output end of the light guiding component is output and projected to the aqueous solution of the reactant to provide the microbial photosynthesis; and a wastewater a supply means and a clean water collecting means, the reaction tank is connected to the waste water supply means and the purified water collecting means; when the microorganism catalyzes the aqueous solution of the reactant for a predetermined time, the purified water produced is collected by the purified water collecting means And discharging the outside of the reaction tank; the waste water supply means supplying the fuel into the reaction tank.

one. Basic technical features of the system of the invention

As shown in FIG. 1 , a high-power LED illumination system with a microbial fuel cell developed by the present invention has basic structural features including at least one lamp holder 10 and at least one LED light-emitting element 11 disposed on the LED light-emitting element 11 . The lamp holder 10; at least one heat conducting member 12 for guiding the heat generated by the LED light emitting element 11 away from the LED light emitting element; a microbial fuel cell 20 (a specific embodiment may be as disclosed in the Republic of China Publication No. 200915654 The fuel cell of the patent application, or the sludge fuel cell as disclosed in Japanese Patent Application No. 201101648, which comprises a reaction tank 21 filled with an aqueous reactant solution 22, the aqueous solution of the reactant 22 includes a predetermined amount of microorganisms and a predetermined amount of organic matter as a fuel, the microorganisms catalyzing the fuel to generate electricity for the microbial fuel cell 20, the power for supplying the LED light-emitting element 11 to emit light, the heat conduction The material 12 extends into the aqueous solution of the reactant 22, so that the aqueous solution 22 of the reactant absorbs the heat of the heat-conducting member 12, and on the other hand, the heat-conducting member 12 is cooled, and the other is provided. Biological heat required.

two. A specific embodiment of the system of the present invention

As shown in FIG. 1 , a specific embodiment of a high-power LED illumination system with a microbial fuel cell developed by the present invention includes: a lamp holder 10; a plurality of LED light-emitting elements 11 , and the plurality of LED light-emitting elements 11 is disposed on the lamp holder 10; a plurality of heat conducting members 12 are connected at one end to the lamp holder 10 and adjacent to the LED light emitting element 11 for guiding the heat generated by the LED light emitting element 11; and a microbial fuel cell 20 And comprising a reaction tank 21, an ion exchange membrane or a proton exchange membrane (PEM) 23 is disposed in the center of the reaction tank 21, and the reaction tank 21 is filled with an aqueous reactant solution 22, and the reactant aqueous solution 22 includes a predetermined amount of microorganisms and a fuel. a predetermined amount of the organic substance, which is catalyzed by the microorganism to generate electricity for the microbial fuel cell 20 to supply the power required for the LED light-emitting element 11 to emit light, and the other end of the heat-conducting member 12 extends into the reactant The aqueous solution 22 causes the aqueous reactant solution 22 to absorb the heat of the heat conducting member 12, on the one hand, to cool the heat conducting member, and to provide the heat required by the microorganism.

Participation. A preferred embodiment of the system of the present invention

As shown in FIG. 1 , a preferred embodiment of a high-power LED lighting system with a microbial fuel cell developed by the present invention includes: a lamp holder 10; at least one light guiding component 30, which is embodied For example, an optical fiber; a plurality of LED light-emitting elements 11 are disposed on the socket 10, a part of the LED light-emitting element 11 is externally illuminated, and another part of the LED light-emitting element 11 is connected to the light guide. An input end of the component 30, the light emitted by the other part of the LED light-emitting component 11 enters the light-guiding component 30 from the input end; a plurality of heat-conducting components 12, one end of which is connected to the lamp holder 10 and adjacent to the LED An element 11 for absorbing heat generated by the LED light-emitting element 11 and guiding away from the LED light-emitting element 11; and a microbial fuel cell 20 including a reaction tank 21 having an ion exchange membrane or proton exchange in the center of the reaction tank 21 Membrane (PEM) 23, the reaction tank 21 is filled with an aqueous reactant solution 22, and the reactant aqueous solution 22 includes a predetermined amount of microorganisms and a predetermined amount of organic substances as a fuel, which is catalyzed by the microorganisms to ignite the microorganisms. The battery 20 generates electric power for supplying the power required for the LED light-emitting element 11 to emit light; the other end of the plurality of heat-conducting members 12 extends into the reactant aqueous solution 22, so that the reactant aqueous solution 22 absorbs the heat of the heat-conducting member 12, The heat conducting member 12 is cooled to provide heat required by the microorganism; and an output end of the light guiding member 30 is output and projected to the reactant aqueous solution 22 to provide the microbial photosynthesis.

Hey. Another preferred embodiment of the system of the present invention

As shown in FIG. 1 , a preferred embodiment of a high power LED illumination system with a microbial fuel cell developed by the present invention includes: a lamp holder 10; at least one light guiding component 30; and a plurality of LEDs a plurality of LED light-emitting elements 11 are disposed on the socket 10, a portion of the LED light-emitting elements 11 are externally illuminated, and another portion of the LED light-emitting elements 11 is connected to an input end of the light-guiding assembly 30. The light emitted by the other part of the LED light-emitting component 11 enters the light-guiding component 30 from the input end; a plurality of heat-conducting components 12 are connected at one end to the lamp holder 10 and adjacent to the LED light-emitting component 11 for absorbing the light. The heat generated by the LED light-emitting element 11 is guided away from the LED light-emitting element 11; a microbial fuel cell 20 includes a reaction tank 21, and an ion exchange membrane or a proton exchange membrane (PEM) 23 is disposed in the center of the reaction tank 21, and the reaction tank The inside of the 21 is filled with a reactant aqueous solution 22, and the reactant aqueous solution 22 includes a predetermined amount of microorganisms and a predetermined amount of organic substances as a fuel, and the microbial fuel cell 20 generates electricity by the microorganisms catalyzing the fuel. The other end of the plurality of heat conducting members 12 extends into the reactant aqueous solution 22, so that the reactant aqueous solution 22 absorbs the heat of the heat conducting member 12, and on the other hand, the heat conducting member 12 is cooled. Further, the heat required by the microorganism is provided; and an output end of the light guiding component 30 is output and projected to the reactant aqueous solution 22 to provide the microbial photosynthesis requirement; and a wastewater supply means 40 and a purified water collection The means 41, the reaction tank 21 is connected to the waste water supply means 40 and the purified water collecting means 41; after the microorganism catalyzes the aqueous solution of the reactants 22 for a predetermined time, the purified water produced is collected by the purified water collecting means 42 The outside of the reaction tank 21 is discharged; the waste water supply means 40 supplies the fuel into the reaction tank 21.

Wu. A specific embodiment of the method of the invention

Referring to FIG. 1 to FIG. 4, the high power LED illumination method of the present invention has a microbial fuel cell, which comprises the following steps:

(a) providing a system according to the present invention, that is, providing at least one lamp holder 10, at least one LED lighting element 11 disposed on the lamp holder 10, at least one heat conducting member 12 and a microbial fuel cell 20;

(b) in the reaction tank 21 of the microbial fuel cell 20 is filled with a predetermined amount of the aqueous reactant solution 22;

(c) catalyzing the fuel by the microorganisms of the microbial fuel cell 20 to cause the microbial fuel cell 20 to generate electricity;

(d) supplying power to the LED light emitting element 11 to emit light;

(e) using at least one heat conducting member 12 to guide the heat generated by the LED light-emitting element 11 away from the LED light-emitting element 11;

(f) using the heat conducting member 12 to extend into the aqueous reactant solution 22, so that the aqueous reactant solution 22 absorbs heat from the LED light-emitting element 11 from the heat-conducting member 12, on the one hand, cooling the heat-conducting member 12 and the LED light-emitting element 11, and further providing microorganisms. Required heat;

(g) When the aqueous solution 22 of the microbial fuel cell 20 is insufficient, the process returns to the step (b), whereby the microbial fuel cell 20 is continuously generated with electric power to supply the power required for the LED light-emitting element 11 to emit light.

In a preferred embodiment of the method of the present invention, at least one LED light-emitting component 11 is plural, and a part of the LED light-emitting component 11 is externally illuminated, and another LED light-emitting component is connected to a light-guiding component 30, The light directing component 30 is directed to the aqueous reactant solution 22 to provide microbial photosynthesis.

In a preferred embodiment of the method of the present invention, a wastewater supply means 40 and a clean water collecting means 41 are connected to the reaction tank 21. When the microorganisms catalyze the fuel in the aqueous solution 22 for a predetermined period of time, the purified water produced is collected by the purified water collecting means 41 and discharged outside the reaction tank 21. The waste water supply means 40 supplies the external fuel into the reaction tank 21.

Wu. in conclusion

The invention combines a microbial fuel cell and a high-power LED to form a self-powered and natural circulation illumination system, which generates electricity by the catalytic action of microorganisms to supply power required for LED illumination, and generates light when the LED emits light. The need for heat supply to the effective function of microorganisms constitutes a relatively energy efficient and efficient system. Moreover, the aqueous solution of the reactants can use waste water, and has a purifying effect on the wastewater.

The above is only one of the possible embodiments of the present invention, and is not intended to limit the scope of the patents of the present invention, and the equivalent implementations of other changes according to the contents, features and spirits of the following claims are It should be included in the scope of the patent of the present invention. In addition to the above advantages, the invention has deep industrial applicability, can effectively improve the lack of use, and is specifically defined in the characteristics of the request item, is not found in the same kind of articles, and thus has practicality and progress, and has been in accordance with the invention. Patent requirements. The invention is subject to the subsidy for the research project of the National Science Council. In order to ensure the rights and interests of the research and development results, the application is filed according to law. The SIPO is required to approve the patent in accordance with the law to protect the legitimate rights and interests of the applicant.

10. . . Lamp holder

11. . . LED light-emitting element

12. . . Heat conductive member

20. . . Microbial fuel cell

twenty one. . . Reaction tank

twenty two. . . Aqueous solution

twenty three. . . Exchange membrane

30. . . Light guide assembly

40. . . Waste water supply means

41. . . Water purification means

1 is a schematic view of a first embodiment of a lighting system of the present invention;

2 is a schematic view of a first embodiment of an illumination system of the present invention;

3 is a schematic view of a first embodiment of an illumination system of the present invention; and

4 is a schematic flow chart of a lighting method of the present invention.

10. . . Lamp holder

11. . . LED light-emitting element

12. . . Heat conductive member

20. . . Microbial fuel cell

twenty one. . . Reaction tank

twenty two. . . Aqueous solution

twenty three. . . Exchange membrane

Claims (6)

A high-power LED lighting system with a microbial fuel cell, comprising: at least one lamp holder; at least one LED light-emitting element, the LED light-emitting element is mounted on the lamp holder; at least one heat-conducting member for the LED light-emitting element The generated heat is guided away from the LED light-emitting element; a microbial fuel cell comprising a reaction tank, the reaction tank being internally filled with an aqueous solution of the reactant, the reactant aqueous solution comprising a predetermined amount of microorganisms and a predetermined amount of organic as a fuel a substance that catalyzes the fuel to generate electricity for the microbial fuel cell to supply a power source for illuminating the LED light-emitting element, the heat-conducting member extending into the aqueous solution of the reactant, causing the aqueous solution of the reactant to absorb the heat-conducting member The heat, on the one hand, cools the heat conducting member and the LED light emitting element, and otherwise provides the heat required by the microorganism. The high-power LED lighting system with a microbial fuel cell according to claim 1, wherein the at least one LED light-emitting component is plural; a part of the LED light-emitting component is externally illuminated, and another part of the LED light-emitting component is connected An input end of the light guiding component is disposed, and the light emitted by the LED lighting component of the other part enters the light guiding component from the input end, and is output from an output end of the light guiding component to be projected to the reactant aqueous solution To provide the microbial photosynthesis needed. The high-power LED lighting system with a microbial fuel cell according to claim 1, wherein the reaction tank is connected with a waste water supply means and a clean water collecting means; when the microorganism catalyzes the aqueous solution of the reactant for a predetermined time, The generated purified water is collected by the purified water collecting means and discharged outside the reaction tank; the waste water supply means supplies the external fuel into the reaction tank. A high power LED illumination method with a microbial fuel cell, comprising the steps of: (a) providing the system of claim 1; (b) filling the reaction tank of the microbial fuel cell with a predetermined amount of the reactant An aqueous solution; (c) catalyzing the fuel by the microorganism of the microbial fuel cell to generate electricity to the microbial fuel cell; (d) supplying the electric power to the LED light emitting element to emit light; (e) using the at least one heat conducting member The heat generated by the LED light-emitting element is guided away from the LED light-emitting element; (f) the heat-radiating member is used to extend into the aqueous solution of the reactant, so that the aqueous solution of the reactant absorbs heat from the light-emitting element of the heat-conducting member. Cooling the heat conducting member and the LED light emitting element, and otherwise providing heat required by the microorganism; (g) when the aqueous solution of the reactant of the microbial fuel cell is insufficient, returning to step (b), thereby causing the microbial fuel cell Power is continuously generated to supply the power required for the LED light-emitting element to emit light. The method of claim 4, wherein the at least one LED light-emitting component is plural, wherein a portion of the LED light-emitting component is externally illuminated, and another portion of the LED is illuminated. The component is connected to a light guiding component, and the light guiding component is guided to the aqueous solution of the reactant to provide the microbial photosynthesis. The high-power LED lighting method with a microbial fuel cell according to claim 4, wherein the reaction tank is connected with a waste water supply means and a clean water collecting means; when the microorganism catalyzes the aqueous solution of the reactant for a predetermined time, The generated purified water is collected by the purified water collecting means and discharged outside the reaction tank; the waste water supply means supplies the external fuel into the reaction tank.