(19)
(11) EP 4 524 291 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.05.2025 Bulletin 2025/19

(43) Date of publication A2:
19.03.2025 Bulletin 2025/12

(21) Application number: 24161701.8

(22) Date of filing: 06.03.2024
(51) International Patent Classification (IPC): 
C25B 15/08(2006.01)
C25B 1/23(2021.01)
C25B 3/07(2021.01)
C25B 1/04(2021.01)
C25B 3/03(2021.01)
C25B 3/26(2021.01)
(52) Cooperative Patent Classification (CPC):
C25B 1/23; C25B 1/04; C25B 3/03; C25B 3/07; C25B 3/26; C25B 15/08; C25B 15/083; C25B 9/23; C25B 15/021; C25B 15/023; C25B 9/19; C25B 9/73; C25B 15/02; C25B 15/087; C25B 3/25
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 15.09.2023 JP 2023149912

(71) Applicant: Kabushiki Kaisha Toshiba
Tokyo 105-0023 (JP)

(72) Inventors:
  • MIKOSHIBA, Satoshi
    Tokyo, 105-0023 (JP)
  • FUJIWARA, Naoya
    Tokyo, 105-0023 (JP)
  • KOFUJI, Yusuke
    Tokyo, 105-0023 (JP)
  • KUDO, Yuki
    Tokyo, 105-0023 (JP)
  • KITAGAWA, Ryota
    Tokyo, 105-0023 (JP)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) ELECTROCHEMICAL REACTION DEVICE AND METHOD OF OPERATING ELECTROCHEMICAL REACTION DEVICE


(57) An electrochemical reaction device includes: a structure that includes: a cathode; an anode; a diaphragm, a cathode chamber; and an anode chamber; a first to a fourth flow path through which a first to fourth fluid flows respectively; at least one controller selected from a first and a second flow rate controller, a first and a second pressure controller, a temperature controller and a power supply, the controller including the first flow rate controller; a gas/liquid separator in the middle of the fourth flow path; a first flowmeter that measures a flow rate of the third fluid; a second flowmeter that measures a flow rate of the fourth fluid; and a control device that measures the sum of the flow rates of the first, third and fourth fluids and controls the controller according to the sum to control a pressure difference between the chambers.





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