CN205356191U - Flexible thermoelectric generation structure of wearing formula with extending wire - Google Patents
Flexible thermoelectric generation structure of wearing formula with extending wire Download PDFInfo
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- CN205356191U CN205356191U CN201521027087.8U CN201521027087U CN205356191U CN 205356191 U CN205356191 U CN 205356191U CN 201521027087 U CN201521027087 U CN 201521027087U CN 205356191 U CN205356191 U CN 205356191U
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Abstract
The utility model discloses a flexible thermoelectric generation structure of wearing formula with extending wire. From dressing outside towards, include flexible heat -conducting silica gel cushion, thermoelectric generation layer, heat conduction paster and metal radiation sheet in proper order, thermoelectric generation layer cold junction face and hot junction face are connected respectively with above heat conduction paster bottom surface and the flexible heat -conducting silica gel cushion, are connected with the metal radiation sheet bottom surface above the heat conduction paster. When it dressed the nonplanar human epidermis of face laminating, extending plain conductor and dimethyl silicone polymer encapsulated and absorb deformation stress, avoided the poor bismuth telluride base thermoelectric leg fracture of mechanical properties and the inefficacy of electrode connection, the flexible heat -conducting silica gel cushion of the hot junction on thermoelectric generation layer one side encapsulation, guarantee with wearing person skin exposure's tight type, improved heat transfer efficiency, the cold junction of each rigidity thermoelectric generation module has independent heat conduction paster and metal radiation sheet, has reduced structure thickness and quality, has increased cold and hot end temperature difference. It can worth dressing the energy supply of formula medical devices, have to popularize and apply.
Description
Technical field
This utility model relates to a kind of thermo-electric generation structure, particularly relates to a kind of Wearable flexibility thermo-electric generation structure with extending wire.
Background technology
The application of body-worn medical device is more and more extensive, for instance pulse blood oxygen instrument, eeg monitoring instrument, electrocardiogram monitor, Mycotoxin identification instrument and blood glucose monitoring system etc., it is possible to detect health indicator or the adjuvant treatment of diseases of human body in real time.The energy supply providing lasting stability for body-worn medical device is one, world today study hotspot and a difficult problem.Existing energy-provision way relies primarily on lithium battery power supply, and its effective time is for being generally several hours to several days, it is necessary to the equipment that often takes off is charged, and limits the sphere of action of patient, brings a lot of inconvenience to patient；And for the patient of self-care ability difference, often change battery and can add the human cost of nurse.
In addition with the energy-provision way that some are novel, for instance the coupling energy supply of nuclear battery, external electromagnetic, piezo-electric generating and thermo-electric generation etc..Nuclear battery working life can more than 10 years, but general volume is relatively big, and human body has toxicity and radiation risk；Powered by the mode of external electromagnetic induction and need in vitro to carry extra device, it will increase the burden of patient's action；Piezo-electric generating is that the energy of human motion is converted into electric energy, but people is low at motion frequency or under quiescent conditions, output is unable to reach the required power consumption of device work.
Thermo-electric generation is the Seebeck effect utilizing thermoelectric semiconductor material, converts heat into electric energy.Thermoelectric power generation device is without mobile parts, noiselessness, pollution-free, simple in construction；Simultaneously as the thermostasis of human body and there is between body surface and external environment certain temperature difference, and the lower limit not requirement that thermo-electric generation is to the temperature difference, therefore, it can directly this partial heat of profit generates electricity, it is achieved continue energy supply.
Minisize thermoelectric arm usually directly processed by existing miniature flexible thermo-electric generation component in flexible substrate, wire connection is carried out again through methods such as the MEMS technology such as sputtering, chemical vapour deposition (CVD) or silver paste coatings, the thickness of this kind of thermo-electric generation component is less, can not produce the bigger temperature difference when human epidermal is as thermal source；Also have researcher that the thermoelectric of thin film class is encapsulated as stereochemical structure, increase thermograde, but owing to thin film thermoelectric materials resistance is relatively big, and MEMS technology processing finite thickness, the power of generating is unable to reach the energy supply demand of conventional body-worn medical device.Owing under room temperature, the thermoelectric figure of merit of Tellurobismuthite. material is higher, therefore, the thermoelectric material adopting bismuth telluride-base makes thermoelectric arm, it is possible to improve the generated output of temperature difference electricity generation device.But, people's body surface there is many curved surfaces and physical activity has motility, it is necessary to Wearable thermo-electric generation component has less size and better flexible；The bismuth telluride-base mechanical property of materials is poor, and stress is easily caused breaking strain, and so directly processing bismuth telluride-base material on a flexible substrate is easily broken off, and makes thermo-electric generation element failure.Therefore, exploitation one can reduce impact, and flexible temperature differential power generation micro-unit structure preferably is very necessary.
Utility model content
The purpose of this utility model be in that to provide can adapt to curved surface, technique is simple, conversion efficiency of thermoelectric is high, a kind of Wearable flexibility thermo-electric generation structure with extending wire of good reliability.
This utility model solves its technical problem and be the technical scheme is that
This utility model faces out from wearing, includes flexible thermal conductive silicon rubber cushion, thermo-electric generation layer, heat-conducting patch and metal fin successively；The cold end face of thermo-electric generation layer is connected with above heat-conducting patch bottom surface and flexible thermal conductive silicon rubber cushion respectively with face, hot junction, is connected with metal fin bottom surface above heat-conducting patch.
Described thermo-electric generation layer, have and have at least a line, each row to contain two and the identical rigidity thermo-electric generation module of above structure, each rigidity thermo-electric generation module is connected with N-type thermoelectric arm same number P type thermoelectric arm metallic conduction sheet by multiple N-type thermoelectric arms, connect with adjacent rigidity thermo-electric generation module again through flexible ductile metals wire, between multiple N-type thermoelectric arms and multiple P type thermoelectric arm of each rigidity thermo-electric generation module and ductile metals wire be used that polydimethylsiloxane encapsulates and form thermo-electric generation layer.
The conductive filler granule of described flexible thermal conductive silicon rubber cushion is alumina particle, or the hybrid particles of aluminium oxide, magnesium oxide and boron nitride.
Described N-type thermoelectric arm material is doped bismuth telluride base thermoelectricity material, and P type thermoelectric arm material is doped bismuth telluride base thermoelectricity material, and metallic conduction sheet material is fine copper.
This utility model has the beneficial effect that
Adopt the encapsulation of the polydimethylsiloxane with gap and ductile metals wire to make thermo-electric generation structure have flexibility, can deform in multiple directions.When nonplanar human epidermal is fitted in the wearing face of flexible thermo-electric generation structure, ductile metals wire and polydimethylsiloxane encapsulation can absorb distortional stress, it is to avoid the inefficacy that the bismuth telluride-based thermoelectric arm fracture of bad mechanical property and electrode connect.The hot junction one side packing flexibility thermal conductive silicon rubber cushion of thermo-electric generation layer, substitutes conventional ceramic wafer heat-conducting plate, it is ensured that the tight type contacted with wearer skin, improves heat transfer efficiency；The cold end of each rigidity thermo-electric generation module has independent heat-conducting patch and metal fin, reduces structural thickness and quality, increases cold and hot end temperature difference.
This invention, mainly for the energy supply of body-worn medical device, has application value.
Accompanying drawing explanation
Fig. 1 is the Wearable flexibility thermo-electric generation structural representation of bending.
Fig. 2 is the Wearable flexibility thermo-electric generation structural profile schematic diagram of bending.
Fig. 3 is the exploded perspective view of Wearable flexibility thermo-electric generation structure.
The process chart of Fig. 4 Wearable flexibility thermo-electric generation structure.
In figure: 1. flexible thermal conductive silicon rubber cushion, 2. thermo-electric generation layer, 3. heat-conducting patch, 4. metal fin, 5.N type thermoelectric arm, 6.P type thermoelectric arm, 7. metallic conduction sheet, 8. ductile metals wire, 9. polydimethylsiloxane.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further described.
Ultimate principle of the present utility model is:
According to Seebeck effect, the temperature difference at P type thermoelectric arm and N-type thermoelectric arm two ends can produce voltage difference.The voltage produced due to single thermocouple is very low, can adopt the mode of " hot road is in parallel, circuit connected in series ", P type and N-type thermoelectric arm is formed thermoelectric, thus improving output voltage values.
Under room temperature, the thermoelectric figure of merit of Tellurobismuthite. material is the highest, adopts Tellurobismuthite. and alloy thereof can improve the generated output of temperature difference electricity generation device.But, owing to the Tellurobismuthite. mechanical property of materials is poor, stress is easily caused breaking strain.Connected by ductile metals wire and the rigidity electrothermal module of single row or multiple rows array type is connected, when device deforms, ductile metals wire can absorb distortional stress, keeps original shape and structure of thermoelectric arm, thus avoiding thermoelectric material fracture to cause thermo-electric generation element failure.
As shown in Figure 1, Figure 2, Figure 3 shows, this utility model faces out from wearing, includes flexible thermal conductive silicon rubber cushion 1, thermo-electric generation layer 2, heat-conducting patch 3 and metal fin 4 successively；Thermo-electric generation layer 2 two sides is connected with above heat-conducting patch 3 bottom surface and flexible thermal conductive silicon rubber cushion 1 respectively, and heat-conducting patch 3 is connected with metal fin 4 bottom surface above.
Described thermo-electric generation layer 2, have at least a line, each row contains two and the identical rigidity thermo-electric generation module of above structure, each rigidity thermo-electric generation module is connected with metallic conduction sheet 7 with N-type thermoelectric arm 5 same number P type thermoelectric arm 6 by multiple N-type thermoelectric arms 5, connect with adjacent rigidity thermo-electric generation module again through flexible ductile metals wire 8, between multiple N-type thermoelectric arms 5 and multiple P type thermoelectric arm 6 of each rigidity thermo-electric generation module and ductile metals wire 8 be used that polydimethylsiloxane 9 encapsulates and form thermo-electric generation layer 2.
The conductive filler granule of described flexible thermal conductive silicon rubber cushion 1 is alumina particle, or the hybrid particles of aluminium oxide, magnesium oxide and boron nitride, has good heat conductivility, simultaneously can be anti-puncture, plays the effect of insulation.
Described N-type thermoelectric arm 5 material is doped bismuth telluride base thermoelectricity material, and P type thermoelectric arm 6 material is doped bismuth telluride base thermoelectricity material, and metallic conduction sheet 7 material is fine copper.
The block cutting of compacting, by powder semisolid compacting P type and the bismuth telluride based bulk of N-type, is become millimetre-sized cube thermoelectric arm by wire cutting technology by this utility model.Thermoelectric arm surface finish after line is cut, removes impurity, then adopts evaporation process one layer of micron-sized nickel of processing at cold and hot two ends, prepare the thermoelectric arm needed for rigidity thermo-electric generation module.
As shown in Figure 4, the one side of metallic conduction sheet 7 is coated with micron-sized tin layers by the method adopting surface spray stannum or the heavy stannum of chemistry.By corresponding positioning clamping device, the N-type thermoelectric arm 5 of equal amount, P type thermoelectric arm 6 are intervally arranged into thermoelectric.Utilize the mask plate corresponding with thermoelectric, be coated with lead-free solder at the cold and hot two ends of N-type thermoelectric arm 5 and P type thermoelectric arm 6.Structure according to circuit connected in series, the surface covering stannum with metallic conduction sheet 7 respectively at the cold and hot end of thermoelectric arm connects, but is not coated solder on the face, thermoelectric arm hot junction that rigidity thermoelectricity module two ends need the flexible ductile metals wire 8 of connection and covers metallic conduction sheet 7.Outside at whole module adopts level clamp overall clamping, is put in vacuum furnace by the device after clamping and welds.
Respectively through soldering, flexible ductile metals wire 8 is connected the face, thermoelectric arm hot junction that multiple rigidity thermo-electric generation module two ends are exposed, and the material of ductile metals wire 8 is fine copper.The form that rigidity thermo-electric generation module connects can be single row or multiple rows.The portion size that ductile metals wire 8 welds with thermoelectric arm is equal with thermoelectric arm face area, and intermediate connections is smaller in size than two ends area size, and has certain bending, has ductility.When fitting flexible curved surface, the middle part of the ductile metals wire 8 that the deformation of the rigidity thermo-electric generation module array connected by flexible ductile metals wire 8 is concentrated mainly on, decrease the stress deformation of rigidity thermo-electric generation module, avoid the fracture of thermoelectric arm, thus avoiding the inefficacy of flexible thermo-electric generation structure.
The polydimethylsiloxane mould with the projection that is intervally arranged is processed by three-dimensional printing technology, polydimethylsiloxane 9 encapsulating structure processed is made to have gap between each rigidity thermo-electric generation module, and make metallic conduction sheet 7 expose, improve the heat transfer property of thermo-electric generation layer.First, the thermoelectricity module connected is put in mould.Then, the polydimethyl siloxane material that preparation resin is suitable with firming agent ratio, pour mould into, be heating and curing polydimethylsiloxane in vacuum drying oven.Finally, the thermoelectricity module array that the polydimethylsiloxane after solidifying wraps up is separated from mould, forms thermo-electric generation layer 2.Owing to the thermal conductivity of polydimethylsiloxane is low, polydimethylsiloxane 9 encapsulates and N-type thermoelectric arm 5 and P type thermoelectric arm 6 is wrapped up, expose the metallic conduction sheet 7 of hot junction and cold end, the temperature difference at the cold and hot two ends of rigidity thermoelectricity module will not be reduced, but the radiation between rigidity thermo-electric generation module internal and each rigidity thermo-electric generation module and convection current can be reduced, improve the effect of heat transfer efficiency.And the polydimethylsiloxane after solidifying has certain flexibility, deformation can be absorbed when flexible thermo-electric generation structural bending, make rigidity thermo-electric generation module and human body skin close contact.
Flexible thermal conductive silicon rubber cushion 1 is sticked in the face, hot junction of thermo-electric generation layer 2; the area of flexible thermal conductive silicon rubber cushion 1 is equal with thermo-electric generation layer 2 floor space; the conductive filler granule of thermal conductive silicon rubber cushion is generally alumina particle or the hybrid particles of aluminium oxide, magnesium oxide and boron nitride; there is good heat conductivility; simultaneously can be anti-puncture, play the effect of insulation.Flexible thermal conductive silicon rubber cushion 1 can absorb deformation when thermo-electric generation structural bending, makes rigidity thermo-electric generation module and human body skin close contact.
Cold end face at thermo-electric generation layer 2 sticks heat-conducting patch 3 and fin 4 successively.The cold end of each rigidity thermo-electric generation module has independent heat-conducting patch 3 and metal fin 4.The material of metal fin 4 is metallic aluminium and metallic copper.
Claims (4)
1. a Wearable flexibility thermo-electric generation structure with extending wire, it is characterized in that: face out from wearing, include flexible thermal conductive silicon rubber cushion (1), thermo-electric generation layer (2), heat-conducting patch (3) and metal fin (4) successively；Thermo-electric generation layer (2) cold end face is connected with above heat-conducting patch (3) bottom surface and flexible thermal conductive silicon rubber cushion (1) respectively with face, hot junction, and heat-conducting patch (3) is connected with metal fin (4) bottom surface above.
2. Wearable flexibility thermo-electric generation structure according to claim 1, it is characterized in that: described thermo-electric generation layer (2), there is at least a line, each row contains two and the identical rigidity thermo-electric generation module of above structure, each rigidity thermo-electric generation module is by multiple N-type thermoelectric arms (5), connect with N-type thermoelectric arm (5) same number P type thermoelectric arm (6) metallic conduction sheet (7), connect with adjacent rigidity thermo-electric generation module again through flexible ductile metals wire (8), between multiple N-type thermoelectric arms (5) and multiple P type thermoelectric arm (6) of each rigidity thermo-electric generation module and ductile metals wire (8) be used that polydimethylsiloxane (9) encapsulation form thermo-electric generation layer (2).
3. Wearable flexibility thermo-electric generation structure according to claim 1, it is characterised in that: the conductive filler granule of described flexible thermal conductive silicon rubber cushion (1) is alumina particle.
4. Wearable flexibility thermo-electric generation structure according to claim 1, it is characterized in that: described N-type thermoelectric arm (5) material is doped bismuth telluride base thermoelectricity material, P type thermoelectric arm (6) material is doped bismuth telluride base thermoelectricity material, and metallic conduction sheet (7) material is fine copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027087.8U CN205356191U (en) | 2015-12-11 | 2015-12-11 | Flexible thermoelectric generation structure of wearing formula with extending wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027087.8U CN205356191U (en) | 2015-12-11 | 2015-12-11 | Flexible thermoelectric generation structure of wearing formula with extending wire |
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| CN205356191U true CN205356191U (en) | 2016-06-29 |
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| CN201521027087.8U Expired - Fee Related CN205356191U (en) | 2015-12-11 | 2015-12-11 | Flexible thermoelectric generation structure of wearing formula with extending wire |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406769A (en) * | 2015-12-11 | 2016-03-16 | 浙江大学 | Wearable type flexible temperature-difference power generation structure with stretchable wire |
| CN108550688A (en) * | 2018-05-24 | 2018-09-18 | 中国科学院上海硅酸盐研究所 | A kind of thermo-electric device with adaptive connection layer |
| CN114203891A (en) * | 2020-09-17 | 2022-03-18 | 桂林电子科技大学 | Preparation method of foam-filled flexible wearable thermoelectric generator |
| CN114242880A (en) * | 2021-12-10 | 2022-03-25 | 武汉大学 | Flexible self-healing thermoelectric power generation device and preparation method thereof |
-
2015
- 2015-12-11 CN CN201521027087.8U patent/CN205356191U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406769A (en) * | 2015-12-11 | 2016-03-16 | 浙江大学 | Wearable type flexible temperature-difference power generation structure with stretchable wire |
| CN108550688A (en) * | 2018-05-24 | 2018-09-18 | 中国科学院上海硅酸盐研究所 | A kind of thermo-electric device with adaptive connection layer |
| CN114203891A (en) * | 2020-09-17 | 2022-03-18 | 桂林电子科技大学 | Preparation method of foam-filled flexible wearable thermoelectric generator |
| CN114203891B (en) * | 2020-09-17 | 2024-04-05 | 桂林电子科技大学 | Preparation method of foam-filled flexible wearable thermoelectric generator |
| CN114242880A (en) * | 2021-12-10 | 2022-03-25 | 武汉大学 | Flexible self-healing thermoelectric power generation device and preparation method thereof |
| CN114242880B (en) * | 2021-12-10 | 2022-11-15 | 武汉大学 | Flexible self-healing thermoelectric power generation device and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20181211 |