CN109103325A - A kind of multistage electrothermal module with phase-change accumulation energy layer - Google Patents
A kind of multistage electrothermal module with phase-change accumulation energy layer Download PDFInfo
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- CN109103325A CN109103325A CN201810771994.5A CN201810771994A CN109103325A CN 109103325 A CN109103325 A CN 109103325A CN 201810771994 A CN201810771994 A CN 201810771994A CN 109103325 A CN109103325 A CN 109103325A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
- H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
Abstract
The present invention relates to a kind of multistage electrothermal module with phase-change accumulation energy layer, which is divided into heat zone, medium temperature layer and cryosphere three-level.The energy-storage layer of phase-change material composition is utilized between heat zone, medium temperature layer and low temperature layer, electrothermal module hot end and cold-end temperature difference is maintained to stablize by heat absorption and heat release adjoint in the phase transition process of phase-change material, while the temperature for adjusting every level-one thermoelectric material is at the temperature range of its optimum performance to improve the whole conversion efficiency of thermoelectric of electrothermal module.
Description
Technical field
The invention belongs to electrothermal module fields, are related to a kind of multistage electrothermal module with phase-change accumulation energy layer, in particular to
A kind of multistage electrothermal module of the energy-storage layer with phase-change material composition.
Background technique
In electrothermal module according to prior art, such as the electrothermal module of CN102308400A description, the thermoelectricity foot of segmentation
High-temperature material is used in the hot side of foot, and uses cryogenic material in the cold side of foot, to improve the whole efficiency of electrothermal module.
For thermoelectric material, low temperature, moderate temperature and high-temperature thermoelectric material three categories can be divided into.Different types of thermoelectric material, most
The temperature range of best performance is different.Different thermoelectric materials is used in different temperature ranges, electrothermal module can be improved
Efficiency.Meanwhile the recycling of waste heat is carried out using electrothermal module, there are the time unstability of heat source, i.e. the unit time is defeated
The thermal fluctuation for entering electrothermal module is very big, is difficult to maintain temperature locating for thermoelectric material into the temperature range of its optimum performance.
In traditional electrothermal module, multilevel structure is used to improve the efficiency of electrothermal module.However traditional multilevel structure lacks
Effective measures solve the time unstability bring electrothermal module hot end and cold-end temperature difference is unstable and energy utilization of heat source
The low problem of rate.
Summary of the invention
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of multistage thermoelectricity mould with phase-change accumulation energy layer
It is unstable to solve electrothermal module hot end and cold-end temperature difference when external heat source inputs unstable for the deficiency of existing electrothermal module for block
Fixed problem.
Technical solution
A kind of multistage electrothermal module with phase-change accumulation energy layer, it is characterised in that including heat zone 1, medium temperature layer 3 and low temperature
Layer 5；It is equipped with first order energy-storage layer 2 between heat zone and medium temperature layer, is equipped with second level energy-storage layer 4 in medium temperature layer and cryosphere；
The heat zone 1, medium temperature layer 3 and each layer of cryosphere 5 include upper substrate layer 6, functional layer 7 and lower substrate layer 8, the functional layer
7 include two layers of conductive electrode 9, PN to 10 and heat-insulated support plate 11；Two layers of conductive electrode 9 are located at multiple PN to about 10, and
Multiple PN are connected using concatenated mode to be embedded in heat-insulated support plate 11 10, two layers of conductive electrode 9 and multipair PN to 10；Institute
The PN in heat zone 1 is stated to 10 using high-temperature thermoelectric material；PN in the medium temperature layer 3 uses warm thermoelectric material to 10；Institute
The PN in cryosphere 5 is stated to 10 using low-temperature thermoelectric material；
The first order energy-storage layer 2 and second level energy-storage layer 4 include upper encapsulated layer 13, energy-storage units layer 14, heat conduction baffle
Layer 15 and lower encapsulated layer 16, energy-storage units 14 are embedded in the gridiron pattern that the heat conduction baffle 15 to match with its size forms, the
Level-one energy-storage layer 2 is identical as the material of upper encapsulated layer 13 of second level energy-storage layer 4, first order energy-storage layer 2 and second level energy-storage layer 4
Lower encapsulated layer 16 material it is identical, the energy-storage units 14 of first order energy-storage layer 2 and second level energy-storage layer 4 and heat conduction baffle 15
Material is different；The material selection principle of the heat conduction baffle 15 are as follows: make the heat conductivity of energy-storage layer 12 be able to achieve electrothermal module whole
The maximization of body heat photoelectric transformation efficiency；The material of the energy-storage units 14 selects: according to its actual condition and each layer PN to hair
The temperature range for waving its optimum performance makes the maximum of electrothermal module entirety conversion efficiency of thermoelectric by the energy storage of energy-storage units 14
Change.
It is identical that the heat conduction baffle 15 forms gridiron pattern size.
The operating temperature of the high-temperature thermoelectric material is higher than 1000K.
The operating temperature range of the warm thermoelectric material is 373K~1000K.
The operating temperature range of the temperature of the low-temperature thermoelectric material is 373K or less.
Beneficial effect
A kind of multistage electrothermal module with phase-change accumulation energy layer proposed by the present invention, the electrothermal module be divided into heat zone, in
Warm layer and cryosphere three-level.Using the energy-storage layer of phase-change material composition between heat zone, medium temperature layer and low temperature layer, pass through phase transformation
Adjoint heat absorption and heat release are stable to maintain electrothermal module hot end and cold-end temperature difference in the phase transition process of material, adjust simultaneously
The temperature of every level-one thermoelectric material is at the temperature range of its optimum performance to improve the whole heat to electricity conversion of electrothermal module effect
Rate.
Beneficial effects of the present invention:
1, the multistage electrothermal module that the present invention uses, realizes modularized encapsulation not at the same level, passes through selection not at the same level
And assembling, meet the requirement of different operating environment.
2, the multistage electrothermal module that the present invention uses, best using that can be played in the temperature range to different temperature sections
The thermoelectric material of thermoelectricity capability improves the whole conversion efficiency of thermoelectric of electrothermal module.
3, level-one energy-storage layer is set between heat zone and medium temperature layer, second level energy-storage layer is set in medium temperature layer and cryosphere,
Solve the problems, such as that electrothermal module hot end and cold-end temperature difference are unstable when external heat source inputs unstable；Using phase-change accumulation energy layer, gram
The time inhomogeneities for taking external heat source input, realizes effective heat management.
Level-one energy-storage layer is set between heat zone and medium temperature layer, second level energy-storage layer is set in medium temperature layer and cryosphere, is led to
Crossing selection has the phase-change material of different phase transition temperatures to adjust the temperature of every level-one thermoelectric material, this temperature is made to be in thermoelectricity
The temperature range of material optimum performance is to improve the whole conversion efficiency of thermoelectric of electrothermal module.
Detailed description of the invention
Fig. 1 is the overall structure diagram of electrothermal module.
Fig. 2 is the structural schematic diagram of heat zone.
Fig. 3 is a kind of structure chart of energy-storage layer.
In figure, 1- heat zone；2- level-one energy-storage layer；3- medium temperature layer；4- second level energy-storage layer；5- cryosphere；6- upper substrate layer；
7- functional layer；8- lower substrate layer；9- conductive electrode；10-PN pairs；The heat-insulated support plate of 11-；12- energy-storage layer；The upper encapsulated layer of 13-；
14- energy-storage units；15- heat conduction baffle；Encapsulated layer under 16-.
Specific embodiment
Now in conjunction with embodiment, attached drawing, the invention will be further described:
Fig. 1 is the overall structure diagram of electrothermal module, referring to Fig.1, electrothermal module of the invention, including heat zone 1, in
5 three-level of warm layer 3 and cryosphere, there is level-one energy-storage layer 2 between heat zone and medium temperature layer, has second level in medium temperature layer and cryosphere
Energy-storage layer 4 is from top to bottom followed successively by heat zone 1, level-one energy-storage layer 2, medium temperature layer 3, second level energy-storage layer 4, cryosphere 5.Heat zone
1, medium temperature layer 3 and cryosphere 5 are in high temperature section, middle-temperature section and low-temperature zone respectively.
Fig. 2 is the structural schematic diagram of heat zone, referring to Fig. 2, the electrothermal module heat zone 1, medium temperature layer 3 and cryosphere 5
Every level-one is by 8 up of three-layer of upper substrate layer 6, functional layer 7 and lower substrate layer.It is followed successively by upper substrate layer 6, functional layer from top to bottom
7, lower substrate layer 8, wherein functional layer includes PN to 10, conductive electrode 9 and heat-insulated support plate 11, and PN is embedding to 10 and conductive electrode 9
In heat-insulated support plate, multipair PN is connected in series to 10 by conductive electrode 9.Upper substrate layer 6 and lower substrate layer 8 are main
Play bearing and defencive function layer；Thermal energy is converted to electric energy to 10 by PN, and conductive electrode 9 connects multipair PN to 10,
Improve output voltage；Heat-insulated support plate 11 is on the one hand heat-insulated, and PN is made to maintain the biggish temperature difference to 10 both ends, on the other hand bearing and
Protect PN to 10 and conductive electrode 9.
Fig. 3 is a kind of structure chart of energy-storage layer, and referring to Fig. 3, the maximum material of dosage is phase-change material in energy-storage layer 12, is made
With being the storage or release for realizing energy using the phase transformation of phase-change material, effective energy management is realized.Specifically,
It is the storage energy when external heat input is big, releases energy in external heat input hour.Meanwhile by changing heat conduction baffle
15 material changes the heat-conductive characteristic of energy-storage layer 12 to adjust temperature locating for heat zone, medium temperature layer and cryosphere, makes each
The temperature of grade thermoelectric material is at the temperature range of its optimum performance to improve the whole conversion efficiency of thermoelectric of electrothermal module, because
The principle of this 15 material of heat conduction baffle selection is exactly that the heat-conductive characteristic of energy-storage layer 12 is made to be advantageously implemented electrothermal module overall thermal
The maximization of photoelectric transformation efficiency.Its actual condition of the selection gist of 14 material of energy-storage units and each layer PN are to its optimality of performance
The temperature range of energy, the principle of 14 material of energy-storage units selection seek to realize thermoelectricity mould by the energy storage effect of energy-storage units 14
The maximization of block entirety conversion efficiency of thermoelectric.The structure of energy-storage layer 12 is not limited to structure in embodiment, is directed to different
Working environment need to correspondingly change the structure of energy-storage layer 12.
Claims (5)
1. a kind of multistage electrothermal module with phase-change accumulation energy layer, it is characterised in that including heat zone (1), medium temperature layer (3) and low
Warm layer (5)；First order energy-storage layer (2) are equipped between heat zone and medium temperature layer, are stored up in medium temperature layer and cryosphere equipped with the second level
Ergosphere (4)；The heat zone (1), medium temperature layer (3) and cryosphere (5) each layer include upper substrate layer (6), functional layer (7) and under
Substrate layer (8), the functional layer (7) include two layers of conductive electrode (9), PN to (10) and heat-insulated support plate (11)；Two layers of conduction
Electrode (9) is located at multiple PN to the upper and lower of (10), and connects multiple PN to (10), two layers of conductive electrode using concatenated mode
(9) (10) are embedded in heat-insulated support plate (11) with multipair PN；PN in the heat zone 1 uses high temperature thermoelectric material to 10
Material；PN in the medium temperature layer 3 uses warm thermoelectric material to 10；PN in the cryosphere 5 uses low temperature thermoelectricity material to 10
Material；
The first order energy-storage layer (2) and second level energy-storage layer (4) include upper encapsulated layer (13), energy-storage units layer (14), thermally conductive
Carrier ring (15) and lower encapsulated layer (16), energy-storage units (14) are embedded in heat conduction baffle (15) composition to match with its size
In gridiron pattern, first order energy-storage layer (2) is identical as the material of upper encapsulated layer (13) of second level energy-storage layer (4), first order energy storage
Layer (2) is identical as the material of lower encapsulated layer (16) of second level energy-storage layer (4), first order energy-storage layer (2) and second level energy-storage layer
(4) energy-storage units (14) are different with the material of heat conduction baffle (15)；The material selection principle of the heat conduction baffle (15) are as follows: make
(12 heat conductivity is able to achieve the maximization of electrothermal module entirety conversion efficiency of thermoelectric to energy-storage layer；The energy-storage units (14)
Material selection: according to its actual condition and each layer PN to the temperature range for playing its optimum performance, pass through energy-storage units (14)
Energy storage make the maximization of electrothermal module entirety conversion efficiency of thermoelectric.
2. the multistage electrothermal module according to claim 1 with phase-change accumulation energy layer, it is characterised in that: the heat conduction baffle
(15) composition gridiron pattern size is identical.
3. the multistage electrothermal module according to claim 1 with phase-change accumulation energy layer, it is characterised in that: the high temperature thermoelectric
The operating temperature of material is higher than 1000K.
4. the multistage electrothermal module according to claim 1 with phase-change accumulation energy layer, it is characterised in that: the medium temperature thermoelectricity
The operating temperature range of material is 373K~1000K.
5. the multistage electrothermal module according to claim 1 with phase-change accumulation energy layer, it is characterised in that: low-temperature thermoelectric material
Temperature operating temperature range be 373K or less.
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| CN201810771994.5A CN109103325B (en) | 2018-07-13 | 2018-07-13 | Multistage thermoelectric module with phase change energy storage layer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113098325A (en) * | 2021-03-19 | 2021-07-09 | 北京科技大学 | Wearable thermoelectric generator with multilayer phase-change material radiator |
| CN113300634A (en) * | 2021-05-08 | 2021-08-24 | 江苏大学 | Two-stage thermoelectric power generation waste heat recovery device based on heat pipe heat transfer |
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