JP7503311B2 - 太陽電池および熱電変換素子を有する複合発電装置 - Google Patents
太陽電池および熱電変換素子を有する複合発電装置 Download PDFInfo
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- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
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- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
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- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
- H01L31/0525—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells including means to utilise heat energy directly associated with the PV cell, e.g. integrated Seebeck elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
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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
- H10N10/13—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 heat-exchanging means at the junction
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
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Description
本実施の形態に係る複合発電装置のエネルギー効率のシミュレーションを先の図1および図2を適宜参照しつつ説明する。
である。なお、Iは上述した吸収層11の電流密度、SAは吸収層11の断面積(電流が流れる方向に対して垂直な面の面積)(m2)、S C はP型およびN型熱電変換素子22、23の断面積(m2)である。
dT/dx(x=0)=-jQ/κ ・・・(7)
ここで、x軸はP型およびN型熱電変換素子22、23の高温側の端部と低温側の端部とを結ぶ方向と平行に設定し、κはP型およびN型熱電変換素子22、23の熱伝導率(W/(m・K))である。
jQ=Q/(2MSC)
=SA(Psun-PT-Prad(TH,Vcell)-IVcell)/(2MSC) ・・・(10)ここで、熱流量Q(W)は、吸収層11における入射光分(Psun)、透過光分(PT)および輻射再結合損失分(Prad)のエネルギー流密度(W/m2)を、それぞれ、下記式11~13とした。
jQ=Q/(2MSC)
=SA(Psun-Prad(TH,Vcell)-IVcell)/(2MSC) ・・・(14)
η(%)=100×IV/Psun ・・・(15)
λ≡(MjQ/je)×(ασ/κ) ・・・(19)
により定義した。λは、1対の熱電変換素子22、23当たりの電気抵抗による電圧損失に対する、M対により得られる熱起電力の比(割合)を表す因子である。
1-(M/λ+C1/M)>0 ・・・(24)
である。
10A 光電変換部
10B 熱電変換部
11 吸収層
12 第1電極
13 第2電極
14 赤外線吸収層
15 熱伝導層
20 高温側接続電極
21 低温側接続電極
22、221~225 P型熱電変換素子
23、231~235 N型熱電変換素子
24 第1出力電極
25 第2出力電極
26 低温体
Claims (8)
- 受光する第1の面とその裏側の第2の面を有する吸収層であって、該第1の面に設けられた第1の電極と該第2の面に設けられた第2の電極とを有する該吸収層を含む光電変換部と;
前記第2の面に設けられた熱伝導層と、
前記熱伝導層に、互いに電気的に絶縁されて設けられた複数の第1の接続電極と、
複数の第2の接続電極と、
M対のP型熱電変換素子およびN型熱電変換素子であって、各々の一端が前記複数の第1の接続電極のうちの一つと接触し、その他端が前記複数の第2の接続電極のうちの一つに接触する、ただしMは自然数である、該P型熱電変換素子およびN型熱電変換素子と、前記P型熱電変換素子およびN型熱電変換素子のうちの一つの他端に接触する第1および第2の出力電極と、を含む熱電変換部と;
を備え、
前記第1の電極と前記複数の第1の接続電極の一つとが電気的に接続され、
前記第2の電極と前記複数の第1の接続電極の他の一つとが電気的に接続され、
前記M対のP型熱電変換素子およびN型熱電変換素子の各々が前記第1の接続電極と前記第2の接続電極を介して接続され、前記第1および第2の出力電極を出力電極として前記光電変換部と前記M対のP型熱電変換素子およびN型熱電変換素子とが電気的に直列に接続されてなり、
前記Mは、式1を満たすように選択されてなる、複合発電装置;
1-(M/λ+C1/M)>0・・・(1)
ここで、λは1対の前記P型およびN型熱電変換素子の電気抵抗による電圧損失に対する前記M対の前記P型およびN型熱電変換素子により得られる熱起電力の割合を表す因子であり式2で表され、C1は、1対の熱電変換素子において得られる熱起電力に対する、最大電力点における光電変換部の内部電圧の温度変化の割合を表す因子であり式3で表され、
λ=(MjQ/je)×(ασ/κ) ・・・(2)
式(3)中のパラメータは、dVOC/dTは光電変換部の開放電圧の温度特性、FFは光電変換部の電流-電圧特性のフィルファクタ、αはP型およびN型熱電変換素子のゼーベック係数(V/K)である。 - 前記Mは、λ/2に最も近い自然数が選択されてなる、請求項1記載の複合発電装置。
- 式4を満たす範囲でその式中の各パラメータが選択されてなる、請求項1または2記載の複合発電装置;
ξ=αjeLc/κ<1 ・・・(4)
ここで、式中のパラメータはP型およびN型熱電変換素子のパラメータであり、jeはP型およびN型熱電変換素子の1つあたりの電流密度(A/m2)、αはゼーベック係数(V/K)、κは熱伝導率(W/(mK))、Lcは前記第1の接続電極と接する端部と前記第2の接続電極の端部とを結ぶ方向に沿った長さ(m)である。 - 前記第1の電極と接続された前記第1の接続電極と前記第1の出力電極との間に少なくとも1個のP型熱電変換素子またはN型熱電変換素子が接続され、前記第2の電極と接続された前記第1の接続電極と前記第2の出力電極との間に少なくとも1個のP型熱電変換素子またはN型熱電変換素子が接続されてなる、請求項1~3のうちいずれか一項記載の複合発電装置。
- 前記熱伝導層は電気絶縁材料からなる請求項1~4のうちいずれか一項記載の複合発電装置。
- 前記吸収層と前記熱伝導層との間に赤外線吸収層をさらに備える、請求項1~5のうちいずれか一項記載の複合発電装置。
- 前記第2の電極が前記複数の第1の接続電極の他の一つを兼ねてなる、請求項1~6のうちいずれか一項記載の複合発電装置。
- 前記複数の第2の接続電極に接する冷却手段をさらに備える、請求項1~7のうちいずれか一項記載の複合発電装置。
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