CN101599686B - Liquid metal cutting magnetic line type power generating device based on human body energy drive - Google Patents
Liquid metal cutting magnetic line type power generating device based on human body energy drive Download PDFInfo
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Abstract
The invention relates to a liquid metal cutting magnetic line type power generating device based on human body energy drive, comprising at least one hollow sealed annular channel body and at least one fluid power generating unit. The hollow sealed annular channel body is filled with liquid metal, and the annular channel of the hollow sealed annular channel body is internally provided with a one-way valve for controlling the flowing direction of the liquid metal; the fluid power generating unit consists of a positive plate, a negative plate and a pair of permanent magnets, wherein the positive plate and the negative plate are clung to the inner side wall of the annular channel of the hollow sealed annular channel body and are arranged opposite to each other, and the permanent magnets are inlaid on the upper end surface and the lower end surface of the hollow sealed annular channel body or are respectively positioned above and below the hollow sealed annular channel body. The liquid metal cutting magnetic line type power generating device does pursuit movement by means of the liquid metal in a human motion inducing device so as to cut the magnetic line and accordingly output electricity to meet the electricity demand of various moving or implanting medical instruments.
Description
Technical field
The present invention relates to a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT) that electric energy can be provided the mobile electronic apparatus, be particularly related to and a kind ofly wearable or portable bring out the metal fluid accompany movement, thereby cutting magnetic line is exported electric weight then to satisfy the liquid metal cutting magnetic line type power generating device that drives based on body energy of all kinds of mobile electronic device power requirement by means of the human body self energy.
Background technology
Current, develop rapidly along with medical technology, the kind that satisfies the implant into body formula medical apparatus of all kinds of treatments and diagnostic purpose and wearable medicine equipment is increasing, as is implanted to pacemaker, defibrillator, monitor, nerve stimulator, drug efflux pump and wearable miniature temperature, electrocardio, blood pressure monitor and even therapeutic device etc. in the body.Simultaneously, a large amount of portable mobile electronic devices such as mobile phone, MP3, camera, palmtop PC etc. emerge in an endless stream, and have greatly satisfied the needs of the human material and cultural life that becomes increasingly abundant.In the work of these apparatuses, power supply technique is a great key link all the time, but all there is such-and-such problem in existing charging technique.Such as, can guarantee the persistence of powering after the electrical equipment that implants needs once to implant, but existing scheme is difficult to satisfy this current demand; As for the consumer goods to wearable medicine equipment and mobile phone one class, frequent charge is inevitable, the user causes the inoperable thing of device to happen occasionally because of forgetting charging, simultaneously, the problem that can not ignore is that this type of charging is consuming time longer, thereby also cause many energy losses, imagination, along with a large amount of uses of the hundreds of millions of mobile phone in the whole world, the energy that consumed every day thus is very huge.Therefore, seek a kind of can arbitrarily the charging and the less permanent energy supply technology of energy dependence to external world, have vital realistic meaning.
For a long time, with regard to the exploitation of all kinds of device energy supply technology, paid much attention to by countries in the world always, but made progress limited.In recent years, along with the proposition of a large amount of mobile electronic devices, wearable medicine equipment and implant devices with succeed in developing in succession, more make long-life, development efficient, the micro-energy resource system that can charge flexibly be thus lifted to a unprecedented aspect.Because the life-span of any battery is always limited, therefore, all kinds of devices are implemented charging in good time effectively becomes an important need.Such as, for the medical apparatus of implant into body, being the injury that reduces repeatedly to perform the operation, must avoid regularly in the patient body, taking out the trouble of being charged again behind the corresponding device as far as possible; And for the indispensable electrical equipment of the life of classes such as wearable apparatus and mobile phone, if can thoroughly break away from the thing of periodic charge, pleasant very particularly, will be saved a large amount of energy resource consumptions thus beyond doubt.Leading to aspect this target, the permanent energy supplying system that goes out by means of the energy development of human body self energy or outside non-damage formula input has unique value.
Summary of the invention
The object of the present invention is to provide a kind of can be by means of the liquid metals accompany movement in the human body self exercise induced device, make it cutting magnetic line, thereby the output electric weight is to satisfy all kinds of moving or the liquid metal cutting magnetic line type power generating device that drives based on body energy of implantable medical device power requirement.
For achieving the above object, the liquid metal cutting magnetic line type power generating device that drives based on body energy provided by the invention comprises:
The hollow seal circular passage main body of dress liquid metal is equipped with the unidirectional valve of controlling the mobile direction of liquid metal at least one in the circular passage of this hollow seal circular passage main body;
At least one fluid generating unit;
Described fluid generating unit is made up of positive plate and negative plate staggered relatively on the circular passage madial wall that is close to hollow seal circular passage main body; With
Be embedded on the upper and lower end face of described circular passage main body or be positioned at a pair of permanent magnet of the upper and lower of described circular passage main body;
The material of described hollow seal circular passage main body is fiberglass, pottery, plastics, rubber or resin.
The hydraulic radius yardstick of the circular passage of described circular passage main body is between 1 nanometer to 40 millimeter; Its vertical sectional shape is circle, ellipse or polygon.Wherein, polygon can be rectangle or triangle.
The circular passage of described circular passage main body is the indentation of circle, spirality, bending.
Described hollow seal circular passage main body outer surface is handled through magnetic screen.
Described unidirectional valve is the unidirectional valve of the mobile direction unanimity of a plurality of control liquid metals.
Described liquid metals is gallium, gallium indium alloy or the gallium-indium-tin alloy that is in a liquid state under the normal temperature.
Described positive plate and negative plate are the pair of metal sheet, perhaps a pair of spraying, paste, inlay or be electroplate with the pellet electrode plate of electric conducting material, and the material of this pellet electrode plate is organic conductive material or metallic conduction material, and thickness is 1nm-1mm.
Described permanent magnet is neodymium iron boron magnetic body, ferrimagnet, cobalt nickel magnet, ferromagnet, cobalt magnet or nickel magnet.Wherein, neodymium iron boron magnetic body can be the nanometer neodymium iron boron magnetic body, and ferrimagnet can be the nanometer ferrite magnet, and cobalt nickel magnet can be a nanometer cobalt nickel magnet.
Described Blast Furnace Top Gas Recovery Turbine Unit (TRT) can be dismountable, also can be cemented in the electricity consumption device.
The invention has the advantages that: introduced the metal fluid auto-excitation type magnetic induction generation mode that drives based on the human body different-energy first with output power, pollution-free greenization, liquid metal cutting magnetic line type power generating device based on the body energy driving simple in structure, this device can be organized on the clothing, liquid metals in the Blast Furnace Top Gas Recovery Turbine Unit (TRT) can be caught the centrifugal force at partes corporis humani position such as joint action place, mechanical energy such as displacement that swing at random at the arm place and concussion comprise the power that clothing produces because of extruding in the human motion; Also can utilize the good thermal properties of liquid metal to carry out the heat driving.Multi-form body energy can be by forming inlet, outlet and runner inside the coupling of relative pressure come Fluid Motion Driven By Moving, thereby form cutting magnetic line movement to reach the purpose of generating; The electric organ of making thus can charge as required at any time.Directly do not utilize human body self exercise induced metal fluid motion by technology that electromagnetic induction generator produce electric power to be suggested thereby still have so far both at home and abroad.The present invention has utilized human body self kinetic energy fully, the metallic character of liquid metals itself and the characteristics that are easy to flow, and the electric power of realizing metal fluid magnetic induction generating is exported, thereby realized movable electrical appliances or implantable medical device are charged at any time, and can promote generating capacity by extraneous accelerated motion as required, it is a kind of permanent electricity generation system, can be applied to all kinds of mobile electronic devices, biological microelectromechanical systems, wearable medicine equipment, thing in half a lifetime-half electrical installation that is developing in implantable medical device and the field of tissue engineering technology, and even more occasions are not enumerated herein one by one.Microfluid power generating device and LOC technology, Mems technology have favorable compatibility, and flow passage system has good flexibility, can determine relevant size with the output demand according to the profile of different components, application scenario more flexibly be arranged than piezoelectricity and thermoelectric device.At present, drive the mode that metal fluid produces electric energy in this voltuntary movement mode of human body and yet there are no report.Because human body walks, always be in non-equilibrium state in the motion process, and the hand mode of human body self etc. are easy to implement, and be easy to slide as the liquid metals of good conductor, thereby electrogenesis mode provided by the invention is more direct, under the situation of or active movement passive, reached the effect of charging whenever and wherever possible at human body self.Each electric appliances such as mobile phone, MP3 and even implanted electronic equipment are expected thoroughly to break away from the worry of periodic charge, thereby become a kind of electrical equipment that need not charge.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is the structural representation of the A-A section of Fig. 1;
Accompanying drawing 4 stacks the generating device structure schematic diagram of one for a plurality of hollow annular channel body;
Accompanying drawing 5 is the structural representation of the B-B section of Fig. 4;
Accompanying drawing 6 is spiral generating device structure schematic diagram for hollow annular channel body.
Embodiment
Further describe the present invention below in conjunction with the drawings and specific embodiments.
Embodiment 1:
Accompanying drawing 1 is a structural representation of the present invention; Accompanying drawing 2 is the A-A generalized section of Fig. 1; As seen from the figure, the liquid metal cutting magnetic line type power generating device that drives based on body energy of the present invention comprises:
The hollow seal circular passage main body 1 of dress liquid metal is equipped with the unidirectional valve 12 of controlling the mobile direction of liquid metal at least one in the circular passage 111 of this hollow seal circular passage main body 1;
At least one fluid generating unit 112;
Described fluid generating unit 112 is made up of positive plate 2 and negative plate 3 staggered relatively on circular passage 111 madial walls that are close to hollow seal circular passage main body 1; With
Be embedded on the upper and lower end face of described circular passage main body 1 or be positioned at a pair of permanent magnet 13 of the upper and lower of described circular passage main body 1;
Described hollow seal circular passage main body 1 is the hollow seal circular passage main body of fiberglass, pottery, plastics, rubber or resin for material; The hollow seal circular passage main body 1 of present embodiment is the hollow seal circular passage main body of fiberglass material.
Described liquid metal forms voltage to pass through the magnetic field that described a pair of permanent magnet 13 forms perpendicular to the direction of paper among Fig. 1 between positive plate 11 and the negative plate 14; After connecting outer load, then can produce continuous current.
During use, the liquid metal cutting magnetic line type power generating device that drives based on body energy of the present invention is worn on human motion amplitude and the bigger position of motion frequency, as wrist, arm, leg or/and on the pin, just can drive liquid metal by human motion flows, and, produce direct voltage and electric current through unidirectional valve control; Can directly connect load and driving work; If there is not load running, can connect charging circuit is the rechargeable battery charging, storage of electrical energy.
The size and the size of the space outerpace that the size of the circular passage 111 of hollow seal circular passage main body 1 can be agreed with as required are optimized.The height of circular passage 111 can be between the 1 μ m-40mm; In the present embodiment, the axis of great circle of looping passage 111 is 60mm, and axis of small circle is 44mm, and the height in cross section is 3mm, and width is 14mm.
Hollow seal circular passage main body 1 material among the present invention be under the normal temperature not with the electric insulation of fluid, positive/negative plate, permanent magnet generation chemical reaction or electromagnetic interference, weak magnetic conduction, organic material or inorganic material that chemical property is stable; Can be high-intensity fiberglass, pottery, flexible plastics or resin etc.The processing technology of circular passage 111 can be selected one-shot forming, coheres, micro-nano processing or micro-prepared; Can be by the etching of chemical process such as dry etching or wet method; Machining; Physical property processing as method preparations such as deposition or sputter.
The cross section of circular passage 111 can be square, triangle, circle, ellipse, rectangle, rhombus or the irregular polygon of rule in the present embodiment; The hydraulic radius yardstick of circular passage 111 is between 1 nanometer to 40 millimeter.
Described permanent magnet can be made into block permanent magnet by materials such as neodymium iron boron, SmCo or aluminium nickel cobalts; Liquid metal can be gallium, gallium indium alloy or the gallium-indium-tin alloy that is in a liquid state under the normal temperature, positive plate 2 and negative plate 3 can be the sheet metals such as aluminium, stainless steel, copper or silver of conduction, also can be spraying or be electroplate with the organic material battery lead plate or the metal electrode board of electric conducting material that its thickness is in the 1nm-1mm scope.
After the encapsulation of the integral outer of present embodiment, available magnetic shielding material applies, and it is unfavorable in order to avoid magnetic field of permanent magnet is crossed strong human body and peripheral devices to be caused.This device can directly be powered to load, also can pass through electric capacity, super capacitor, storage battery, rechargeable battery store electrical energy.
Embodiment 2:
As shown in Figure 3, present embodiment is the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a plurality of fluid generating unit combinations.The fluid generating unit that comprises in the present embodiment can be one to 1,000,000, connects by lead 14 between the positive plate 2 of fluid generating unit and the negative plate 3; Connect according to series system in the present embodiment, the negative plate of previous stage fluid generating unit connects the positive plate of next stage fluid generating unit; The positive plate of first order fluid generating unit is the positive pole of whole generating device output, and the negative plate of afterbody fluid generating unit is the negative pole of whole generating device.Also can be according to being connected in parallel, the positive and negative pole plate of fluid generating units at different levels links together by lead respectively, is re-used as the positive pole and the negative pole output of whole generating device.
The circular passage of hollow annular channel body can be a flexure type, also can be circular, spiral type.The intensive placement in circular passage concentrates on a zone, also can be sparse be arranged among the electricity consumption device.
The quantity of fluid generating unit can be determined according to the liquid metal service behaviour of needed output voltage of battery and employing.
Positive plate and negative plate can be multilayered metal films, and perhaps multilayer sprays, pastes, inlays or be electroplate with the pellet electrode plate of electric conducting material, and this pellet electrode sheet material matter is organic or the metallic conduction material, and thickness is in 1mm arrives the range scale of 1nm.Hollow annular channel body in the present embodiment can adopt permeability magnetic material to make.
Embodiment 3:
Accompanying drawing 4 stacks the generating device structure schematic diagram of one for the hollow annular channel body of a plurality of sealings; Accompanying drawing 5 is the B-B profile of Fig. 4;
Independently circular passage in the present embodiment can be 1-10000; At least place a fluid generating unit in each independent circular passage; Independently the fluid generating unit between the circular passage connects by lead 14.Connected mode can be to be connected in series in the present embodiment, also can be to be connected in parallel, and also can be that series connection is connected with mixing in parallel.
Permanent magnet in the present embodiment can be neodymium iron boron magnetic body, ferrimagnet, cobalt nickel magnet, nanometer neodymium iron boron magnetic body, nanometer ferrite magnet, nanometer cobalt nickel magnet, ferromagnet, cobalt magnet or nickel magnet.Can combine with the circular passage by the mode of pasting, inlaying, spraying, depositing.
Permanent magnet in the present embodiment can be carried in hollow annular channel body outer (upper and lower), also can directly manufacture on the upper and lower end face of hollow annular channel body; Can on the hollow annular channel body of each layer, all place permanent magnet, also can be on the upper and lower end face of the outermost hollow annular channel body of the Blast Furnace Top Gas Recovery Turbine Unit (TRT) that stacks one or upper and lower place permanent magnet.
Embodiment 4:
As shown in Figure 6, present embodiment is that the circular passage of hollow annular channel body is spiral Blast Furnace Top Gas Recovery Turbine Unit (TRT).
Circular passage in the present embodiment is the hollow seal annular of interior dress liquid metal, and hollow annular channel body can be circle, spirality or crooked indentation; The unidirectional valve that the mobile direction of control liquid metal is installed in the circular passage of hollow annular channel body can be one or more, is used for liquid one-way flow in the control channel.
Fluid generating unit 112 in the fluid passage in the present embodiment can be respectively one to 1,000,000.The circular passage can be a flexure type, also can be circular, spiral type.The circular passage is concentrated and is looped around a zone, dish cloth that also can be sparse.
The quantity of fluid generating unit can be determined according to the liquid metal service behaviour of needed output voltage of Blast Furnace Top Gas Recovery Turbine Unit (TRT) and employing.
Should satisfy following requirement as liquid metals of the present invention: high conductivity, high conductivity is to reduce the generating internal resistance; Less viscosity is to reduce the reactive loss in the conversion process; Chemical stability is good, under normal working temperature institute's contact material is not played corrosion and chemical action, is difficult for decomposing in air ambient oxidation, weathering; Nontoxic, not because the unusual cracked health threat of bringing that accident causes.In addition, this working medium also should be convenient to obtain; Has certain thermal stability.Such as, though the fusing point of mercury is very low, be-38.87 ℃, because of toxic, generally should not be considered as working medium; In addition, the fusing point of the liquid metals Na-K alloy of specific component can be below the freezing point at-12 ℃, but this metal alloy is easy to react with water and air, thereby has used many inconvenience.But, if resolve sealing problem, the low melting point of these metal fluid uniquenesses also may be in special generating occasion performance important use, metals such as gallium are easy to solidify near zero degree the time, mercury or Na-K alloy then do not have this problem, and this makes it, and they become a kind of generating metal fluid that potential value is arranged.Obviously, the structure that apparatus of the present invention provide also is easy to adopt such liquid metal, just can specifically select for use as requested in the real process.
At present, in the device provided by the invention, recommend based on gallium or its alloy.Gallium is soft silvery white metal, and its fusing point under atmospheric environment is very low, only 29.77 ℃ of (Qian Zengyuan, the hot rerum natura of low-melting-point metal, Beijing: Science Press, 1985), and have very big degree of subcooling, under the situation that is lower than a lot of degree of fusing point, can keep liquid form, be not easy fixed; Dynamic viscosity during liquid-gallium normal temperature is 1.63mPas, a little more than water, has good flow behavior.Yet the conductance of gallium is 0.0678 * 10
6S/cm far above the working medium conductive capability of general plasma Magnetohydrodynamic(MHD) generator, thereby greatly reduces the internal resistance loss.These flow and electrology characteristic shows that be very suitable with gallium as the working medium of power generating device.At normal temperatures, gallium is stable in air, when temperature more than 260 ℃ the time, dry oxygen can make the gallium metal oxidation, and (" rare metal knowledge " writes group, uncommon dispersed metallic but the oxide-film that generates can prevent it to continue oxidation, Beijing: metallurgical industry publishing house, 1978).Particularly, gallium can be easy to generate low-melting alloy with many metals such as bismuth, tin, indium etc., and for example, the gallium alloy fusing point of stanniferous 8% is 20 ℃, and the gallium alloy that contains indium 25% melts in the time of 16 ℃.Further, adopt multicomponent mixture, also can obtain fusing point metal fluid widely, such as (Gu Xuemin, Gong Yisheng, Zang Xiwen, the soup Caro, Lv Yunyang, Ceng Wenzhen, inorganic chemistry book series second volume, Beijing: Science Press, 1990), ternary eutectic: 62.5%Ga, 21.5%In, the fusing point of 16%Sn are 10.7 ℃, and ternary eutectic: 69.8%Ga, 17.6%In, the fusing point of 12.6%Sn are 5 ℃.They all can be used as the working media in the electric organ provided by the invention.
Crucial part of the present invention is the metal fluid that combines the human body voltuntary movement first and be easy to slide, thereby has realized the purpose of random generating easily.It has lot of advantages, and the electric organ size can be done very for a short time, thereby can be used as wearable device.Having adopted human body self to move can drive, and has the characteristics of generating at any time and energy storage, thereby the place of most worthy is that driving the mobile cutting magnetic line of liquid metal with the human body self motion has realized charging at any time; This mode has guaranteed the course of work complete closed of whole generating device, no leakage phenomenon, thereby very convenient to use.
Electric organ of the present invention can be neatly provides electric power to all kinds of mobile electronic devices and the micro element that implants.Use the mode of patent of the present invention as follows: the area of cell that electric organ is set to corresponding movable electrical appliances; According to treating demand electric power how much, determine body energy intensity, or select synkinesia, so, inducing under mechanism drives of displacement or certain strength, thereby the metal fluid in this power facility that has pre-set is moved and the cutting magnetic line behavior takes place and produce needed electric power.In addition, but the electrical storage device pre-charge in this device, and like this, the electric organ that apparatus of the present invention provide can provide energy requirement at any time, again reserve power at any time.Electricity generation module provided by the invention can play a role under many mobile electronic devices and implantable medical devices workplace.
Generating device structure provided by the invention is not limited to above-described situation.In principle, electromagnetic induction effect in the body that any human body displacement brings out all can be used for developing the built-in Blast Furnace Top Gas Recovery Turbine Unit (TRT) that can charge at any time, but implementation structure and the diversified minisize liquid metal of appearance forrns electric organ on this basis.Such as, adopt the outside vibrating mechanism of initiatively introducing, can bring out the liquid metal cutting magnetic line in the electric organ, thereby produce electric power continuously; In addition, be packaged in as the liquid metals in the soft magnetic material of clothing one class and can deform after the extruding accepting, it flows can cutting magnetic line; These characteristics also are feasible charging modes.After if the Blast Furnace Top Gas Recovery Turbine Unit (TRT) size further reduces, also can amplify out the electromagnetic type power generating device after the micro-/ nanoization, by thousands of little/the integrated combined battery of the yardstick drop of receiving can provide bigger electric power output.And, patented technology of the present invention also is easy to develop the composite battery that combines with other generation modes, as: metal fluid electromagnetic induction+thermoelectric power generation, metal fluid electromagnetic induction+photovoltaic power generation, metal fluid electromagnetic induction+chemical cell, metal fluid electromagnetic induction+ultrasound electric machine etc.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. liquid metal cutting magnetic line type power generating device that drives based on body energy comprises:
The hollow seal circular passage main body of dress liquid metal is equipped with the unidirectional valve of controlling the mobile direction of liquid metal at least one in the circular passage of this hollow seal circular passage main body;
At least one fluid generating unit;
Described fluid generating unit is made up of positive plate and negative plate staggered relatively on the circular passage madial wall that is close to hollow seal circular passage main body; With
Be embedded on the upper and lower end face of described circular passage main body or be positioned at a pair of permanent magnet of the upper and lower of described circular passage main body;
Described hollow seal circular passage main body is the sealing annular channel main body of fiberglass, pottery, plastics or epoxy resin material;
Described liquid metals is gallium, gallium indium alloy or the gallium-indium-tin alloy that is in a liquid state under the normal temperature.
2. by the described liquid metal cutting magnetic line type power generating device that drives based on body energy of claim 1, it is characterized in that the hydraulic radius range scale of the circular passage of described circular passage main body is between 1 nanometer to 40 millimeter; Its vertical sectional shape is circle, ellipse or polygon.
3. by the described liquid metal cutting magnetic line type power generating device that drives based on body energy of claim 1, it is characterized in that the circular passage of described circular passage main body is the indentation of circle, spirality, bending.
4. by claim 1, the 2 or 3 described liquid metal cutting magnetic line type power generating devices that drive based on body energy, it is characterized in that described hollow seal circular passage main body outer surface is handled through magnetic screen.
5. by claim 1, the 2 or 3 described liquid metal cutting magnetic line type power generating devices that drive based on body energy, it is characterized in that described unidirectional valve is the unidirectional valve of the mobile direction unanimity of a plurality of control liquid metals.
6. by claim 1, the 2 or 3 described liquid metal cutting magnetic line type power generating devices that drive based on body energy, it is characterized in that, described positive plate and negative plate are respectively the pair of metal sheet, perhaps a pair of spraying, paste, inlay or be electroplate with the pellet electrode plate of electric conducting material, its thickness is in the 1nm-1mm scope; Its material is organic or the metallic conduction material.
7. by claim 1, the 2 or 3 described liquid metal cutting magnetic line type power generating devices that drive based on body energy, it is characterized in that described permanent magnet is the metallicl magnetic material of Nd-Fe-B permanent magnet, ferrite permanent magnet, cobalt nickel permanent magnet, iron, cobalt, nickel.
8. by claim 1, the 2 or 3 described liquid metal cutting magnetic line type power generating devices that drive based on body energy, it is characterized in that described Blast Furnace Top Gas Recovery Turbine Unit (TRT) is detachable battery or the power supply unit of integrated processing in the electricity consumption device.
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| CN104816295B (en) * | 2015-04-01 | 2016-04-13 | 清华大学 | One utilizes battery-driven liquid metal machine and application thereof |
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| CN108966104B (en) * | 2018-07-20 | 2021-08-13 | 山东美欣医疗科技有限公司 | Hearing aid device capable of automatically generating power by utilizing human body movement |
| CN111293856B (en) * | 2020-03-16 | 2021-08-20 | 义乌市嘉诗电子科技有限公司 | Low-cost wearable human body movement power generation device and manufacturing method thereof |
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