CN104467540A - Thermal energy collection and storage device applied to miniature thermoelectric battery - Google Patents
Thermal energy collection and storage device applied to miniature thermoelectric battery Download PDFInfo
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- CN104467540A CN104467540A CN201410722699.2A CN201410722699A CN104467540A CN 104467540 A CN104467540 A CN 104467540A CN 201410722699 A CN201410722699 A CN 201410722699A CN 104467540 A CN104467540 A CN 104467540A
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Abstract
The invention discloses a thermal energy collection and storage device applied to a miniature thermoelectric battery. The miniature thermoelectric battery cold side is connected with a heat sink substrate. A light absorption material layer covers the miniature thermoelectric battery hot side. Phase change heat accumulation matter is arranged between the miniature thermoelectric battery and the light absorption material layer according to the requirements. A heat conducting fin is arranged in the phase change heat accumulation matter. A sealed cavity wrapping the miniature thermoelectric battery and the light absorption material layer is formed in the outer side of the heat sink substrate. A cover body of the sealed cavity is composed of an outer cover connected with the heat sink substrate or a Fresnel lens connected with the heat sink substrate or the outer cover connected with the heat sink substrate and the Fresnel lens connected with the heat sink substrate. The outer cover is made of organic materials, or inorganic materials or composite materials or porous materials. The Fresnel lens is made of organic materials, or inorganic materials or composite materials. The sealed cavity is vacuum or filled with air or inert gases. By means of the thermal energy collection and storage device, the miniature thermoelectric battery can obtain higher output power beneficially.
Description
Technical field
The invention belongs to thermoelectric cell field, particularly a kind of thermal energy collecting and storage device being applied to minitype thermoelectric cell.
Background technology
Thermoelectric cell is a kind of physical power source based on Seebeck effect.The temperature difference of thermoelectric cell hot junction and cold junction is larger, and its electromotive power output is also higher.For setting up the temperature difference high as far as possible in thermoelectric cell hot junction and cold junction to obtain high power output, common way arranges fin to reduce the temperature of thermoelectric cell cold junction as far as possible at the cold junction of thermoelectric cell, sets up the temperature difference high as far as possible with this hot junction at thermoelectric cell and cold junction.
Summary of the invention
For problems of the prior art, the present invention proposes a kind of thermal energy collecting and the storage device that are applied to minitype thermoelectric cell, can under identical environmental condition, set up the larger temperature difference at the cold junction of minitype thermoelectric cell and hot junction, be conducive to minitype thermoelectric cell and obtain higher power output.The present invention is specially adapted to the minitype thermoelectric cell that structure carries out based on collection environmental energy generating electricity.
A kind of thermal energy collecting and storage device being applied to minitype thermoelectric cell that the present invention proposes, comprise the radiator be positioned at bottom minitype thermoelectric cell and the light-absorbing material layer being positioned at minitype thermoelectric cell top, described minitype thermoelectric cell has electric energy output cathode and electric energy output negative pole; Described radiator comprises substrate and fin; Described minitype thermoelectric cell comprises minitype thermoelectric cell hot junction and minitype thermoelectric cell cold junction; Described minitype thermoelectric cell cold junction is connected with the substrate of radiator, and described light-absorbing material layer covers described minitype thermoelectric cell hot junction; Be provided with one outside the substrate of radiator and described minitype thermoelectric cell and light-absorbing material layer are enclosed in interior airtight cavity, the cover body of described airtight cavity is made up of: the outer cover be connected with the substrate of radiator or the Fresnel Lenses be connected with the substrate of radiator or the outer cover be connected with the substrate of radiator and Fresnel Lenses; Described outer cover adopts thermal conductivity to make lower than the organic material of 10W/m.K or inorganic material or composite material or porous material; Described Fresnel Lenses adopts thermal conductivity to make lower than the organic material of 30W/m.K or inorganic material or composite material; For vacuum or be full of air or inert gas in described airtight cavity.
The thermal energy collecting being applied to minitype thermoelectric cell that the present invention proposes and storage device, wherein, the shape of described outer cover is circle, arc, square or Else Rule or irregular shape, and the shape of described Fresnel Lenses is circle, arc, square or Else Rule or irregular shape.Heat Conduction Material can be provided with between described minitype thermoelectric cell cold junction and the substrate of radiator.Heat Conduction Material can be provided with between described minitype thermoelectric cell hot junction and light-absorbing material layer.
Can be provided with phase transformation between described minitype thermoelectric cell hot junction and light-absorbing material layer and store up heat-retaining mass, described phase-change thermal storage material outside can be provided with phase-change thermal storage material container or Fresnel Lenses or be provided with phase-change thermal storage material container and Fresnel Lenses simultaneously; Heat Conduction Material can be provided with between described minitype thermoelectric cell hot junction and described phase-change thermal storage material.Support can be provided with between described phase-change thermal storage material and the substrate of described radiator.Phase-change thermal storage material 9 can be macromolecular material or organic material or inorganic material or metal material or composite material.
Described phase-change thermal storage material inside is provided with conducting strip, and the quantity of conducting strip is 1 or more than one; The shape of described conducting strip is rule or irregular flat board or curved slab or flap; If the shape of described conducting strip is dull and stereotyped, then described conducting strip is according to parallel with the substrate of radiator or vertical or be arbitrarily angled layout; If the shape of described conducting strip is curved slab or flap, then described conducting strip is that optional position is arranged; Described conducting strip contacts with described light-absorbing material layer or contacts with described minitype thermoelectric cell hot junction or contact with described phase-change accumulation energy material container; Described conducting strip adopts thermal conductivity to make higher than the inorganic material of 20W/m.K or metal material or composite material.
Described light-absorbing material layer has individual layer or double-decker; Wherein, light-absorbing material layer and the described phase-change thermal storage material close contact of single layer structure or be provided with Heat Conduction Material therebetween, or the light-absorbing material layer of single layer structure and minitype thermoelectric cell hot junction close contact or be provided with Heat Conduction Material therebetween; Double-deck light-absorbing material layer comprises heat-conducting layer and light-absorption layer, and described light-absorption layer covers on described heat-conducting layer; Described heat-conducting layer and described phase-change thermal storage material close contact or Heat Conduction Material is set therebetween, or described heat-conducting layer and minitype thermoelectric cell hot junction close contact or Heat Conduction Material is set therebetween; Described heat-conducting layer adopts thermal conductivity to make higher than the inorganic material of 20W/m.K or metal material or composite material, and described light-absorption layer is made up of organic light absorbent or inorganic light absorbent or metal light absorbent or composite light absorption material.
Compared with prior art, the invention has the beneficial effects as follows:
1) hot junction of minitype thermoelectric cell is connected with light-absorbing material layer or is connected with light-absorbing material layer by after phase-change thermal storage material.Heat-absorbing material layer, by absorbing sunlight and changing the sunlight of absorption into heat, improves the temperature in minitype thermoelectric cell hot junction with this.Be arranged on the phase-change thermal storage material between minitype thermoelectric cell hot junction and light-absorbing material layer, the heat storage that heat-absorbing material layer can be produced wherein, in order to when passing through thermal release without when solar light irradiation, maintain the temperature difference high as far as possible in the hot junction of minitype thermoelectric cell.Simultaneously, the phase-change thermal storage material be arranged between minitype thermoelectric cell hot junction and light-absorbing material layer can also by absorbing the heat produced from light-absorbing material layer, reduce the temperature of light-absorbing material layer self, thus the thermal loss that the radiation of reduction light-absorbing material layer Yin Wendu high yield heat-dissipating brings;
2) minitype thermoelectric cell is in the airtight cavity that is made up of outer cover and fin.Deposit in case at Fresnel Lenses, minitype thermoelectric cell is positioned at the airtight cavity be made up of outer cover, Fresnel Lenses and fin.The heat that cavity body structure can reduce heat-absorbing material layer and heat-retaining mass to greatest extent distributes to surrounding, to ensure the high efficiency application of heat energy.When being vacuum state in cavity, can by heat-absorbing material layer and phase-change thermal storage material heat energy to surrounding distribute be reduced to minimum;
3) Fresnel Lenses of cavity upper end is placed in, incident sunlight can be gathered in as much as possible heat-absorbing material layer surface, change more solar energy into heat energy, be conducive to maintaining temperature high as far as possible in the hot junction of minitype thermoelectric cell, be conducive to maintaining the temperature difference high as far as possible between the hot junction and cold junction of minitype thermoelectric cell;
4) heat that heat-absorbing material layer provides can be delivered to heat-retaining mass inside by conducting strip more effectively quickly and evenly that be arranged on heat-retaining mass inside.
Accompanying drawing explanation
Fig. 1 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 1;
Fig. 2 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 2;
Fig. 3 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 3;
Fig. 4 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 4;
Fig. 5 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 5;
Fig. 6 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 6;
Fig. 7 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 7;
Fig. 8 is that the present invention is applied to the thermal energy collecting of minitype thermoelectric cell and the structure cross-sectional schematic of storage device embodiment 8.
In figure:
1-outer cover 2-light-absorbing material layer
3-phase-change thermal storage material container 4-radiator
41-substrate 42-fin
5-minitype thermoelectric cell 6-minitype thermoelectric cell electric energy output cathode
7-minitype thermoelectric cell electric energy output negative pole 8-conducting strip
9-phase-change thermal storage material 10-Fresnel Lenses
11-minitype thermoelectric cell hot junction 12-minitype thermoelectric cell cold junction
13-support 14-airtight cavity
Embodiment
Below in conjunction with the drawings and specific embodiments, technical solution of the present invention is described in further detail.
A kind of thermal energy collecting and storage device being applied to minitype thermoelectric cell that the present invention proposes, its structure is made up of outer cover 1, light-absorbing material layer 2, minitype thermoelectric cell 5, minitype thermoelectric cell electric energy output cathode 6, minitype thermoelectric cell electric energy output negative pole 7 and radiator 4.As required, Fresnel Lenses 10 can also be set in the suitable location of outer cover 1 or directly serve as outer cover with Fresnel Lenses, phase-change thermal storage material 9, phase-change thermal storage material container 3 and the support 13 for supporting phase-change thermal storage material container can also be set between light-absorbing material layer 2 and minitype thermoelectric cell 5.
Described outer cover 1 is positioned at the integrally-built outside of device, has certain height.Deposit in case at Fresnel Lenses 10, outer cover 1 forms an airtight cavity with Fresnel Lenses 10 and fin 4 or only forms an airtight cavity by Fresnel Lenses 10 and fin 4.When without Fresnel Lenses 10, outer cover 1 directly and radiator 4 form an airtight cavity.The heat that the structure of airtight cavity can reduce heat-absorbing material layer 2 and phase-change thermal storage material 9 inside to greatest extent distributes to surrounding, to ensure the high efficiency application of heat energy.Airtight cavity inside can be air also can be vacuum also can be inert gas.When being vacuum in airtight cavity, the existence of airtight cavity can by the heat energy of heat-absorbing material layer 2 and phase-change thermal storage material 9 inside to surrounding distribute be reduced to minimum.Outer cover 1 can be arc, square or Else Rule or irregular shape.Outer cover 1 by thermal conductivity low and have suitable intensity material preparation, to reduce the heat exchange of both sides inside and outside outer cover, and have suitable intensity to support airtight cavity structure.Outer cover 1 can adopt macromolecular material or organic material or Inorganic Non-metallic Materials or metal material or composite material manufacture.The material structure manufacturing outer cover 1 can be fine and close, also can be porous.
The effect of described Fresnel Lenses 10 is that incident sunlight is effectively gathered in heat-absorbing material layer 2 as much as possible, is beneficial to heat-absorbing material layer 2 and changes more solar energy into heat energy.The focal position of Fresnel Lenses 10 can identical from the position of light-absorbing material layer 2 also can be different.Fresnel Lenses 10 forms an airtight cavity together with the substrate 41 of radiator, or Fresnel Lenses 10 forms an airtight cavity with outer cover 1 together with substrate 42 three of Sa Re device.Fresnel Lenses 10 is positioned at the upper end of formed airtight cavity.The shape of Fresnel Lenses 10 can be circle, arc, square or Else Rule or irregular shape.Fresnel Lenses 10 can be low and have the light transmissive material manufacture of suitable intensity by the thermal conductivity such as glass or polymethyl methacrylate, low as far as possible to ensure the heat exchange of the upper and lower both sides of Fresnel Lenses, and have suitable intensity to maintain the structure of airtight cavity.The material of compact structure is adopted to manufacture Fresnel Lenses.
Described minitype thermoelectric cell 5 has the function externally exporting electric energy under its cold junction and hot junction exist the condition of the temperature difference.Minitype thermoelectric cell 5 is positioned at the airtight cavity that is made up of outer cover 1 and radiator 4 or is positioned at the airtight cavity that is made up of Fresnel Lenses 10 and radiator 4 or is positioned at the airtight cavity be made up of Fresnel Lenses 10, outer cover 1 and radiator 4 three, and minitype thermoelectric cell cold junction 12 connects with the substrate 41 of radiator, minitype thermoelectric cell hot junction 11 can directly connect with light-absorbing material layer 2 or phase-change thermal storage material 9, and minitype thermoelectric cell hot junction 11 also can be connected with light-absorbing material layer 2 or phase-change thermal storage material 9 by the material that thermal conductivity is good.Directly can be connected between minitype thermoelectric cell cold junction 12 and the substrate 41 of radiator, also can be connected by the material that thermal conductivity is good.Minitype thermoelectric cell cold junction 12 and minitype thermoelectric cell hot junction 11 do not contact with the airtight cavity be made up of Fresnel Lenses 10 and radiator 4, also do not contact with the airtight cavity be made up of Fresnel Lenses 10, outer cover 1 and radiator 4 three.The area of minitype thermoelectric cell cold junction 12 should be less than or equal to the area with radiator 4 phase-contact surface, to ensure that minitype thermoelectric cell 5 is positioned at the airtight cavity that is made up of outer cover 1 and radiator 4 or is positioned at the airtight cavity that is made up of Fresnel Lenses 10 and radiator or is positioned at the airtight cavity be made up of Fresnel Lenses 10, outer cover 1 and radiator 4 three.
Described light-absorbing material layer 2 has absorption sunlight, and changes sunlight effect of heat energy into.Light-absorbing material layer 2 covers minitype thermoelectric cell hot junction 11 or connects with phase-change thermal storage material 9 or connect with phase-change thermal storage material container 3.Light-absorbing material layer 2 does not contact with the airtight cavity be made up of outer cover 1 and radiator 4, also do not contact with the airtight cavity be made up of Fresnel Lenses 10 and radiator 4, also do not contact with the airtight cavity be made up of Fresnel Lenses 10, outer cover 1 and radiator 4 three, there is suitable space therebetween.When light-absorbing material layer 2 cover be positioned at minitype thermoelectric cell hot junction 11, the shape and size of light-absorbing material layer 2 can identical from the shape and size in minitype thermoelectric cell hot junction 11 also can be different.When light-absorbing material layer 2 connects with phase-change thermal storage material 9, the shape and size of light-absorbing material layer 2 can identical from the shape and size of phase-change thermal storage material 9 abutted surface also can be different.When light-absorbing material layer 2 connects with phase-change thermal storage material container 3, the shape and size of light-absorbing material layer 2 can identical from the shape and size of phase-change thermal storage material container 3 abutted surface also can be different.Light-absorbing material layer 2 can have individual layer or sandwich construction.The light-absorbing material layer with single layer structure is by having the metal light absorbent or inorganic light absorbent or organic light absorbent or macromolecule light absorbent material that absorb sunlight and sunlight can be changed into heat energy or composite light absorption material is formed.The top with the light-absorbing material layer of sandwich construction is by having the metal light absorbent or inorganic non-metallic light absorbent or organic light absorbent or macromolecule light absorbent that absorb sunlight and sunlight can be changed into heat energy or composite light absorption material is formed, and bottom is formed by having the metal material of thermal conductive resin and intensity or Inorganic Non-metallic Materials or composite material.
Described phase-change thermal storage material 9 has the heat of absorption light-absorbing material layer 2 generation and is stored wherein, also by the function absorbed or release undergoes phase transition from the heat that light-absorbing material layer 2 produces in phase transition temperature region.In addition, phase-change thermal storage material 9 can also by absorb light-absorbing material layer 2 produce heat, prevent light-absorbing material layer 2 because of temperature too high generation thermal radiation loses heat.Phase-change thermal storage material 9 is between light-absorbing material layer 2 and minitype thermoelectric cell hot junction 11, while connect with minitype thermoelectric cell hot junction 11 or connected with minitype thermoelectric cell hot junction 11 by Heat Conduction Material, another side is connected with light-absorbing material layer 2 or is connected with light-absorbing material layer 2 by Heat Conduction Material.When light-absorbing material layer 2 is attached on phase-change thermal storage material container 3, phase-change thermal storage material 9 can directly be connected with phase-change thermal storage material container 3 or be connected with phase-change thermal storage material container 3 by Heat Conduction Material.In order to the heat produced by light-absorbing material layer 2 imports phase-change thermal storage material 9 inside as early as possible into, phase-change thermal storage material 9 inside can also arrange multiple conducting strip 8.When directly connecting between phase-change thermal storage material 9 with light-absorbing material layer 2 or connected by Heat Conduction Material, between phase-change thermal storage material 9 from light-absorbing material layer 2 contact-making surface shape and size size can identical with light-absorbing material layer also can be different.Between phase-change thermal storage material 9 from minitype thermoelectric cell hot junction 11 contact-making surface shape and size size can identical with minitype thermoelectric cell hot junction 11 also can be different.When phase-change thermal storage material 9 is directly connected with phase-change thermal storage material container 3 or is connected with phase-change thermal storage material container 3 by Heat Conduction Material, between phase-change thermal storage material 9 from phase-change thermal storage material container 3 contact-making surface shape and size size can identical with phase-change thermal storage material container 3 also can be different.Phase-change thermal storage material 9 can be macromolecular material or organic material or inorganic material or metal material or composite material.
Described phase-change thermal storage material container 3 is positioned at phase-change thermal storage material 9 periphery, forms an airtight cavity with both minitype thermoelectric cell hot junctions 11 or with heat-absorbing material layer 2 and minitype thermoelectric cell hot junction 11 three, and it is inner that phase-change thermal storage material 9 is positioned at this airtight cavity.Shape and the size of phase-change thermal storage material container 3 and heat-absorbing material layer 2 abutted surface can be the same or different.Shape and the size of phase-change thermal storage material container 3 and minitype thermoelectric cell hot junction 11 abutted surface can be the same or different.The material manufacturing phase-change thermal storage material container 3 need have suitable intensity, and material structure can be fine and close, also can be porous.The material manufacturing phase-change thermal storage material container 3 can be organic material or macromolecular material or Inorganic Non-metallic Materials or metal material or composite material.
It is inner that described conducting strip 8 is positioned at phase-change thermal storage material 9, its quantity can be one also can be multiple.Conducting strip 8 can connect with light-absorbing material layer 2 and also can not connect, and it connects can be directly be connected also to be connected by the material that thermal conductivity is good.Conducting strip 8 can connect with minitype thermoelectric cell hot junction 11 and also can not connect, and it connects can be directly be connected also to be connected by Heat Conduction Material.When light-absorbing material layer 2 is attached directly on phase-change thermal storage material container 3, conducting strip 8 connects with phase-change thermal storage material container 3 and also can not connect, and it connects can be directly be connected also to be connected by the material that thermal conductivity is good.Conducting strip 8 connects with minitype thermoelectric cell hot junction 11 and also can not connect, and it connects can be directly be connected also to be connected by the material that thermal conductivity is good.The heat that light-absorbing material layer 2 produces is transferred to even minitype thermoelectric cell hot junction 11, phase-change thermal storage material 9 inside quickly and evenly by conducting strip 6, ensure that the heat that light-absorbing material layer 2 produces is stored in phase-change thermal storage material 9 expeditiously in time, also reduce the temperature of light-absorbing material layer 2 simultaneously.The shape of conducting strip 8 can be regular or irregular.The size of conducting strip 8 should ensure that conducting strip is positioned at phase-change thermal storage material 9 inside.Conducting strip 8 material should have high thermal conductivity, and does not corrode in phase-change thermal storage material 9 inside.The material manufacturing conducting strip 8 can be metal material, nonmetallic materials or composite material.
The support 13 of phase-change thermal storage material container is positioned at by phase-change thermal storage material container 3, heat-absorbing material layer 2 and minitype thermoelectric cell 5 three or only by bottom both phase-change thermal storage material container 3 and minitype thermoelectric cell 5 or the airtight cavity that is only made up of both heat-absorbing material layer 2 and minitype thermoelectric cell 5, to support this airtight cavity.The support 13 of phase-change thermal storage material container has suitable intensity, can be solid also can be hollow, this support 13 should have low thermal conductivity, and support 13 can adopt organic material or macromolecular material or Inorganic Non-metallic Materials or metal material or composite material manufacture.
Radiator 4 is positioned at the bottom of minitype thermoelectric cell 5, forms an airtight cavity with both outer covers 1 or with both Fresnel Lenses 10 or with outer cover 1 and Fresnel Lenses 10 three.The substrate 41 of radiator connects with minitype thermoelectric cell cold junction 12.Shape and size size and the minitype thermoelectric cell cold junction 12 of substrate 41 can be the same or different.Substrate 41 be arranged with fin 42, between the inside of fin 42 or fin 42, there is hollow structure, the shape of fin 42 can rule also can be irregular.The effect of radiator 4 is the temperature reducing minitype thermoelectric cell cold junction 12.The material manufacturing radiator 4 has high thermal conductivity.Radiator 4 can adopt metal material or Inorganic Non-metallic Materials or composite material manufacture.
Embodiment 1:
As shown in Figure 1, a kind of thermal energy collecting and storage device being applied to minitype thermoelectric cell of the present invention, comprise the radiator 4 be positioned at bottom minitype thermoelectric cell 5 and the light-absorbing material layer 2 being positioned at minitype thermoelectric cell 5 top, described minitype thermoelectric cell 5 has electric energy output cathode 6 and electric energy output negative pole 7; Described radiator 4 comprises substrate 41 and fin 42; Described minitype thermoelectric cell 5 comprises minitype thermoelectric cell hot junction 11 and minitype thermoelectric cell cold junction 12; Described minitype thermoelectric cell cold junction 12 is connected with the substrate 41 of radiator, and described light-absorbing material layer 2 covers described minitype thermoelectric cell hot junction 11; Be provided with one outside the substrate 41 of radiator and described minitype thermoelectric cell 5 and light-absorbing material layer 2 are enclosed in interior airtight cavity 14, the cover body of described airtight cavity 14 comprises the outer cover 1 be connected with the substrate 41 of radiator, this outer cover 1 is positioned at the surrounding of minitype thermoelectric cell 5, and there is certain height, the top of described outer cover 1 is provided with Fresnel Lenses 10, thus outer cover 1 constitutes airtight cavity 14 with Fresnel Lenses 10 and fin 4.Airtight cavity 14 inside is filled with air.
In the present embodiment 1, outer cover 1 is by the porous polymer materials manufacture of thermal conductivity lower than 10W/m.K, as adopted polymethyl methacrylate manufacture, low as far as possible to ensure the heat exchange of both sides inside and outside outer cover 1, and have suitable intensity with the overall structure of the airtight cavity supporting it and Fresnel Lenses 10 and fin 4 and formed.
The effect being positioned at the Fresnel Lenses 10 at outer cover 1 top incident sunlight is effectively gathered in as much as possible heat-absorbing material layer 2 surface, be beneficial to heat-absorbing material layer 2 and change more solar energy into heat energy, shape and the outer cover topmost of the Fresnel Lenses 10 be connected with outer cover 1 topmost match, described Fresnel Lenses 10 adopts thermal conductivity to make lower than the organic material of 30W/m.K or inorganic material or composite material, and the transparent glass material of Fresnel Lenses 10 described in the present embodiment 1 manufactures.
Minitype thermoelectric cell 5 has the function externally exporting electric energy under its cold junction 12 and hot junction 11 exist the condition of the temperature difference.Due to, minitype thermoelectric cell 5 is positioned at the airtight cavity 14 be made up of outer cover 1, Fresnel Lenses 10 and fin 4, and minitype thermoelectric cell cold junction 12 connects with radiator 4, and minitype thermoelectric cell hot junction 11 is connected with light-absorbing material layer 2.
Light-absorbing material layer 2 has absorption sunlight, and change sunlight the function material layer of heat energy into.Light-absorbing material layer 2 is attached directly to minitype thermoelectric cell hot junction 11.Light-absorbing material layer 2 does not contact with airtight cavity 14, i.e. there is suitable distance between the wall of light-absorbing material layer 2 and airtight cavity 14, light-absorbing material layer 2 adopts organic light absorbent manufacture.
Radiator 4 is positioned at the bottom of minitype thermoelectric cell 5, and the upper transverse plane of radiator substrate 41 connects with minitype thermoelectric cell cold junction 12.The upper end planar dimension of substrate 41 is greater than the size of minitype thermoelectric cell cold junction 12.Be provided with much alternate fin 42 under the upper transverse plane of substrate 41, between the inside of fin 42 and fin 42, there is penetrating hollow structure.The effect of radiator 4 is the temperature reducing minitype thermoelectric cell cold junction 12, and radiator 4 adopts the Inorganic Non-metallic Materials manufacture with high heat conductance.
Embodiment 1 is a kind of basic structure of minitype thermoelectric cell thermal energy collecting and storage device, and wherein, the top of airtight cavity 14 has Fresnel Lenses 10, does not have phase-change thermal storage material 9 in airtight cavity 14.
Embodiment 2:
As shown in Figure 2, the structure of the present embodiment 2 is on the basis of embodiment 1, airtight cavity 14 inside changes vacuum into, further, minitype thermoelectric cell cold junction 12 is connected with radiator 4 by heat-conducting silicone grease, phase-change thermal storage material container 3 is provided with between described minitype thermoelectric cell hot junction 11 and light-absorbing material layer 2, phase-change thermal storage material container 3 adopts the inorganic composite materials manufacture of lower thermal conductivity, by the minitype thermoelectric cell hot junction 11 of bottom, the light-absorbing material layer 2 at top and the phase-change thermal storage material container 3 of periphery constitute a closed shell, phase transformation storage heat-retaining mass 9 is filled with in this closed shell, described phase transformation storage heat-retaining mass 9 adopts liquid-solid phase modification phase-change thermal storage material, described liquid-solid phase modification phase-change thermal storage material 9 adopts organic material manufacture, the top of described phase transformation storage heat-retaining mass 9 connects with light-absorbing material layer 2, bottom connects with minitype thermoelectric cell hot junction 11, periphery connects with phase-change thermal storage material container 3.Be provided with support 13 between the substrate 41 of this closed shell and described radiator, to support this closed shell, this support 13 adopts the macromolecular material manufacture of solid construction.
Described phase-change thermal storage material 9 inside is provided with multiple conducting strip 8, described conducting strip 8 directly connects with phase-change thermal storage material 9, the shape of described conducting strip 8 is regular, described conducting strip 8 is arranged vertically according to the substrate 41 with radiator, one end of conducting strip 8 is connected with light-absorbing material layer 2, described conducting strip 8 adopts thermal conductivity to make higher than the inorganic material of 20W/m.K or metal material or composite material, and conducting strip 8 described in the present embodiment adopts corrosion-resistant metal materials manufacture.
The minitype thermoelectric cell thermal energy collecting of embodiment 2 and storage device, wherein, the top of airtight cavity 14 has Fresnel Lenses 10, is provided with phase-change thermal storage material 9 in airtight cavity 14, and described phase-change thermal storage material 9 is placed in a closed shell.
Embodiment 3:
As shown in Figure 3, the structure of the present embodiment 3 is substantially the same manner as Example 1, and difference is only the gas be full of in the formation of outer cover and airtight cavity.In the present embodiment 3, the cover body of described airtight cavity 14 comprises the outer cover 1 be connected with the substrate 41 of radiator, this outer cover 1 is positioned at the lid that the surrounding of minitype thermoelectric cell 5 and top are a cuboid, and there is certain height, outer cover 1 manufactures with polystyrene, outer cover 1 and fin 4 constitute airtight cavity 14, and airtight cavity 14 inside is filled with inert gas.
The minitype thermoelectric cell thermal energy collecting of embodiment 3 and storage device, wherein, the top of airtight cavity 14 does not have Fresnel Lenses 10, does not have phase-change thermal storage material 9 in airtight cavity 14.
Embodiment 4:
As shown in Figure 4, the structure of the present embodiment 4 is substantially the same manner as Example 2, and difference is only the gas, the making material of support 13 and the shape of conducting strip 8 that are full of in the formation of outer cover 1, airtight cavity.
The upper end of fin is connected with the cold junction 12 of minitype thermoelectric cell by high heat conductance inorganic binder
In the present embodiment 4, the cover body of described airtight cavity 14 comprises the outer cover 1 be connected with the substrate 41 of radiator, this outer cover 1 is positioned at the surrounding of minitype thermoelectric cell 5 and top is a lid, and there is certain height, outer cover 1 polyvinyl chloride manufacture, outer cover 1 and fin 4 constitute airtight cavity 14.
Airtight cavity 14 inside is filled with air.
Support 13 in order to support closed shell adopts polymer composite manufacture.
In phase-change thermal storage material 9, the shape of conducting strip 8 is regular shape.
The minitype thermoelectric cell thermal energy collecting of embodiment 4 and storage device, wherein, the top of airtight cavity 14 does not have Fresnel Lenses 10, is provided with phase-change thermal storage material 9 in airtight cavity 14, and described phase-change thermal storage material 9 is placed in a closed shell.
Embodiment 5:
As shown in Figure 5, the shape of outer cover 1, on the basis of embodiment 3, is changed into the arc of protuberance by the structure of the present embodiment 5 by flat-top, and this outer cover 1 printing opacity organic composite material manufactures, and airtight cavity 14 inside is vacuum.
Further, minitype thermoelectric cell cold junction 12 is connected with radiator 4 by high heat conductance binding agent, described light-absorbing material layer 2 is curved, light-absorbing material layer 2 and the described minitype thermoelectric cell hot junction 11 of this arc constitute the closed shell at arc top, phase-change thermal storage material 9 is filled with in this closed shell, described phase transformation storage heat-retaining mass 9 adopts solid-solid phase change type phase-change thermal storage material, described solid-solid phase-change type phase-change thermal storage material adopts inorganic material manufacture, described solid-solid phase-change type phase-change thermal storage material is connected with described minitype thermoelectric cell hot junction 11 by high heat conductance binding agent, light-absorbing material layer 2 connects with described solid-solid phase-change type phase-change thermal storage material, described light-absorbing material layer 2 adopts inorganic light absorbent manufacture.Support 13 for supporting closed shell adopts the inorganic composite materials manufacture of loose structure.The inorganic material manufacture that radiator 4 for reducing minitype thermoelectric cell cold junction 12 temperature adopts thermal conductivity good.
The minitype thermoelectric cell thermal energy collecting of embodiment 5 and storage device, wherein, the top of airtight cavity 14 is arc, and does not have Fresnel Lenses, be provided with solid-solid phase-change type phase-change thermal storage material in airtight cavity 14, described phase-change thermal storage material 9 is placed in a top also in the closed shell of arc.
Embodiment 6:
As shown in Figure 6, the structure of the present embodiment 6 is substantially the same manner as Example 5, difference is, the light-absorbing material layer 2 of the arc be connected with described minitype thermoelectric cell hot junction 11 defines the closed shell at arc top, phase-change thermal storage material 9 is provided with in closed shell, light-absorbing material layer 2 is double-decker, this double-deck light-absorbing material layer 2 comprises heat-conducting layer and light-absorption layer, described light-absorption layer covers on described heat-conducting layer, be positioned at bottom with phase-change thermal storage thing, 9 heat-conducting layers be directly connected adopt the inorganic material manufacture that thermal conductivity is good, the light-absorption layer covered on this heat-conducting layer adopts has absorption sunlight, and metal light absorbent sunlight being changed into heat energy makes.
Phase-change thermal storage material 9 adopts liquid-solid phase modification phase-change thermal storage material, and liquid-solid phase modification phase-change thermal storage material adopts macromolecular material manufacture.
In order to the inorganic composite materials manufacture that the support 13 supporting closed shell adopts thermal conductivity low.
Conducting strip 8 in liquid-solid phase modification phase-change thermal storage material is connected with the heat-conducting layer of double-decker light-absorbing material layer 2, and the shape of conducting strip 8 is irregular, adopts metallic composite manufacture.
For reducing the aluminium manufacture that minitype thermoelectric cell cold junction 12 temperature sink device 4 adopts thermal conductivity good.
The minitype thermoelectric cell thermal energy collecting of embodiment 6 and storage device, wherein, the top of airtight cavity 14 is arc, and does not have Fresnel Lenses, be provided with liquid-solid phase modification phase-change thermal storage material in airtight cavity 14, in described phase-change thermal storage material, be provided with the erose conducting strip 8 of multi-disc.
Embodiment 7:
As shown in Figure 7, the structure of the present embodiment 7 is substantially the same manner as Example 6, and difference is, the structure of outer cover 1 is the Fresnel Lenses 10 of arc, and this outer cover 1 printing opacity inorganic material manufactures, and airtight cavity 14 inside is vacuum.
Further, the phase-change thermal storage material container 3 of arc is provided with between described minitype thermoelectric cell hot junction 11 and light-absorbing material layer 2, the phase-change thermal storage material container 3 of this arc is formed by the corrosion-resistant metal materials manufacture that thermal conductivity is good, described minitype thermoelectric cell hot junction 11 defines the closed shell at arc top with the phase-change thermal storage material container 3 of the arc be connected, described light-absorbing material layer 2 covers above the phase-change thermal storage material container 3 of arc, phase-change thermal storage material container 3 shape of its shape and arc matches, light-absorbing material layer 2 adopts has absorption sunlight, and sunlight is changed into the inorganic light absorbent manufacture of heat energy.Phase-change thermal storage material 9 in the closed shell that described phase-change thermal storage material container 3 and minitype thermoelectric cell hot junction 11 connect and compose adopts the liquid-solid phase modification phase-change thermal storage material 9 being full of whole cavity, connect with minitype thermoelectric cell hot junction 11 bottom it, remainder connects with the phase-change thermal storage material container 3 of arc, and the liquid-solid phase modification phase-change thermal storage material be full of in closed shell adopts organic phase change material manufacture.
The shape of the conducting strip 8 in liquid-solid phase modification phase-change thermal storage material is irregular, and one end of conducting strip 8 is connected with phase-change thermal storage material container 3, and conducting strip 8 adopts corrosion-resistant inorganic material manufacture.
Support 13 in order to support closed shell adopts the metallic composite manufacture of hollow-core construction.
The metallic composite manufacture that radiator 4 for reducing minitype thermoelectric cell cold junction 12 temperature adopts thermal conductivity good.
The minitype thermoelectric cell thermal energy collecting of embodiment 7 and storage device, wherein, the Fresnel Lenses of arc and radiator form airtight cavity 14, are provided with liquid-solid phase modification phase-change thermal storage material in airtight cavity 14, are provided with the erose conducting strip 8 of multi-disc in described phase-change thermal storage material.
Embodiment 8:
As shown in Figure 8, the structure of the present embodiment 8 is substantially the same manner as Example 7, and difference is, outer cover 1 is formed by the printing opacity macromolecular material manufacture of the arc swelled.
Light-absorbing material layer 2 adopts to have and absorbs sunlight and metal light absorbent manufacture sunlight being changed into heat energy.
The phase-change thermal storage material container 3 of arc is formed by the metal material manufacture that thermal conductivity is good.
The liquid-solid phase modification phase-change thermal storage material be full of in closed shell adopts composite organic-inorganic material manufacture.
The shape of the conducting strip 8 in liquid-solid phase modification phase-change thermal storage material is irregular, the bottom of conducting strip 8 is positioned on minitype thermoelectric cell hot junction 11, and connected with minitype thermoelectric cell hot junction 11 by high thermal conductivity species, conducting strip 8 adopts corrosion resistant metal composite manufacture.
In order to the metallic composite manufacture that the support 13 supporting closed shell adopts thermal conductivity low.
The metal manufacture that radiator 4 for reducing minitype thermoelectric cell cold junction 12 temperature adopts thermal conductivity good.
The minitype thermoelectric cell thermal energy collecting of embodiment 8 and storage device, wherein, outer cover 1 made by the printing opacity macromolecular material of the arc of protuberance, the shape of the conducting strip 8 in liquid-solid phase modification phase-change thermal storage material is irregular, the bottom of conducting strip 8 is positioned on minitype thermoelectric cell hot junction 11, and connected with minitype thermoelectric cell hot junction 11 by high thermal conductivity species
Although invention has been described by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; when not departing from present inventive concept, can also make a lot of distortion, these all belong within protection of the present invention.
Claims (10)
1. one kind is applied to thermal energy collecting and the storage device of minitype thermoelectric cell, comprise the radiator (4) being positioned at minitype thermoelectric cell (5) bottom and the light-absorbing material layer (2) being positioned at minitype thermoelectric cell (5) top, described minitype thermoelectric cell (5) has electric energy output cathode (6) and electric energy output negative pole (7); Described radiator (4) comprises substrate (41) and fin (42); Described minitype thermoelectric cell (5) comprises minitype thermoelectric cell hot junction (11) and minitype thermoelectric cell cold junction (12); It is characterized in that:
Described minitype thermoelectric cell cold junction (12) is connected with the substrate (41) of radiator, and described light-absorbing material layer (2) covers described minitype thermoelectric cell hot junction (11); Substrate (41) outside of radiator is provided with one described minitype thermoelectric cell (5) and light-absorbing material layer (2) is enclosed in interior airtight cavity (14), and the cover body of described airtight cavity (14) is made up of: the outer cover (1) be connected with the substrate (41) of radiator or the Fresnel Lenses (10) be connected with the substrate (41) of radiator or the outer cover (1) be connected with the substrate (41) of radiator and Fresnel Lenses (10); Described outer cover (1) adopts thermal conductivity to make lower than the organic material of 10W/m.K or inorganic material or composite material or porous material; Described Fresnel Lenses (10) adopts thermal conductivity to make lower than the organic material of 30W/m.K or inorganic material or composite material; For vacuum or be full of air or inert gas in described airtight cavity (14).
2. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 1, it is characterized in that, the shape of described outer cover (1) is circle, arc, square or Else Rule or irregular shape, and the shape of described Fresnel Lenses (10) is circle, arc, square or Else Rule or irregular shape.
3. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 1, it is characterized in that, between described minitype thermoelectric cell cold junction (12) and the substrate (41) of radiator, be provided with Heat Conduction Material.
4. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 1, it is characterized in that, between described minitype thermoelectric cell hot junction (11) and light-absorbing material layer (2), be provided with Heat Conduction Material.
5. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 1, it is characterized in that, be provided with phase transformation between described minitype thermoelectric cell hot junction (11) and light-absorbing material layer (2) and store up heat-retaining mass (9); Phase-change thermal storage material (9) is macromolecular material or organic material or inorganic material or metal material or composite material.
6. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 5, it is characterized in that, described phase-change thermal storage material (9) outside is provided with phase-change thermal storage material container (3) or Fresnel Lenses (10) or is provided with phase-change thermal storage material container (3) and Fresnel Lenses (10) simultaneously; The material manufacturing phase-change thermal storage material container (3) is organic material or macromolecular material or Inorganic Non-metallic Materials or metal material or composite material.
7. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 5, it is characterized in that, between described minitype thermoelectric cell hot junction (11) and described phase-change thermal storage material (9), be provided with Heat Conduction Material.
8. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 5, it is characterized in that, described phase-change thermal storage material (9) inside is provided with conducting strip (8), and the quantity of conducting strip (8) is 1 or more than one; The shape of described conducting strip (8) is rule or irregular flat board or curved slab or flap;
If the shape of described conducting strip (8) is dull and stereotyped, then described conducting strip (8) is according to parallel or vertical with the substrate (41) of radiator or be arbitrarily angled layout;
If the shape of described conducting strip (8) is curved slab or flap, then described conducting strip is that optional position is arranged;
Described conducting strip (8) contacts with described light-absorbing material layer (2) or contacts with described minitype thermoelectric cell hot junction (11) or contact with described phase-change accumulation energy material container (3);
Described conducting strip (8) adopts thermal conductivity to make higher than the inorganic material of 20W/m.K or metal material or composite material.
9. be applied to thermal energy collecting and the storage device of minitype thermoelectric cell according to claim 5, it is characterized in that, between the substrate (41) of described phase-change thermal storage material (9) and described radiator, be provided with support (13).
10., according to the thermal energy collecting and the storage device that are applied to minitype thermoelectric cell described in arbitrary in claim 1,4,5, it is characterized in that, described light-absorbing material layer (2) has individual layer or double-decker;
The light-absorbing material layer (2) of single layer structure is direct or contacted with described phase-change thermal storage material (9) by Heat Conduction Material, or the light-absorbing material layer of single layer structure (2) is direct or contacted with minitype thermoelectric cell hot junction (11) by Heat Conduction Material;
Double-deck light-absorbing material layer (2) comprises heat-conducting layer and light-absorption layer, and described light-absorption layer covers on described heat-conducting layer; Described heat-conducting layer is direct or contacted with described phase-change thermal storage material (9) by Heat Conduction Material, or described heat-conducting layer is direct or contacted with minitype thermoelectric cell hot junction (11) by Heat Conduction Material; Described heat-conducting layer adopts thermal conductivity to make higher than the inorganic material of 20W/m.K or metal material or composite material, and described light-absorption layer is made up of organic light absorbent or inorganic light absorbent or metal light absorbent or composite light absorption material.
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Application publication date: 20150325 |