Patent EP0165000A2 successfully refreshed from Google Patents.
EP0165000A2
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EP
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Metal-halogen secondary battery
Assignee: Meidensha Corp
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Filing: 1985-06-04
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Granted: —
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Expires: 2005-06-04
Abstract
Abstract A metal-halogen secondary battery with electrolyte circulation means (16, 18; 28, 31) which has a high state of charging and a capability of storing a large charge of electric power at a high density. In each unit cell of this battery the electrolyte pressure in the positive electrode chamber (8) is maintained higher than the electrolyte pressure in the negative electrode chamber (10). Positive electrolyte containing metal ions in the positive electrode chamber (8) is permeated through the separator (6) into the negative electrode chamber (10) and the metal ions are there reduced, and halogen ions in the negative electrode chamber (10) are also permeated through the separator into the positive electrode chamber (8) and oxidized, thereby contributing to the storage of the electric power.
Inventors
- 👤 Takafumi Hashimoto
- 👤 Yasuo Ando
- 👤 Kenichiro Jinnai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/4214; H01M50/00; H01M50/70; H01M50/77; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
177 words
A metal-halogen secondary battery having at least one unit secondary cell comprising: a positive electrode (2) and a negative electrode (4) which are arranged opposite to each other at a predetermined distance apart; a separator (6) arranged between the positive electrode and the negative electrode so as to define a positive electrode chamber (8) between the separator and the positive electrode and a negative electrode chamber (10) between the separator and the negative electrode; electrolyte (12, 14) containd in each of the positive electrode chamber and said negative electrode chamber, and circulation means (16, 18, 20, 22; 28, 31, 30, 32) for circulating said electrolyte, the separator (6) comprising an ion-permeable porous membrane adapted to prevent permeation of halogen molecules therethrough, and said electrolyte comprising a solution of a metal-halogen compound, and characterised in that the circulation means is arranged to maintain the electrolyte in the positive electrode chamber at a higher pressure than that in the negative electrode chamber, to cause electrolyte to permeate from the positive electrode chamber to.the negative electrode chamber through the separator.
Claim 2
Dependent Claim
177 words
A metal-halogen secondary battery having at least one unit secondary cell comprising: a positive electrode (2) and a negative electrode (4) which are arranged opposite to each other at a predetermined distance apart; a separator (6) arranged between the positive electrode and the negative electrode so as to define a positive electrode chamber (8) between the separator and the positive electrode and a negative electrode chamber (10) between the separator and the negative electrode; electrolyte (12, 14) containd in each of the positive electrode chamber and said negative electrode chamber, and circulation means (16, 18, 20, 22; 28, 31, 30, 32) for circulating said electrolyte, the separator (6) comprising an ion-permeable porous membrane adapted to prevent permeation of halogen molecules therethrough, and said electrolyte comprising a solution of a metal-halogen compound, and characterised in that the circulation means is arranged to maintain the electrolyte in the positive electrode chamber at a higher pressure than that in the negative electrode chamber, to cause electrolyte to permeate from the positive electrode chamber to.the negative electrode chamber through the separator.
Claim 3
Dependent Claim
120 words
A secondary battery according to Claim 1, wherein the circulation means comprises separate positive (16, 18, 20, 22, 26) and negative (28, 31, 30, 32, 36) electrolyte circulation systems, wherein the positive electrolyte circulation system includes a positive electrolyte circulating pump (18) and a positive electrolyte storage tank (26) interconnected by positive electrolyte circulation piping (20, 22) with the positive electrode chamber (8) for circulating positive electrolyte (12) through the positive electrode chamber, and wherein the negative electrolyte circulation system includes a negative electrolyte circulating pump (31) and a negative electrolyte storage tank (36) interconnected by negative electrolyte circulation piping (30, 32) with the negative electrode chamber (10) for circulating negative electrolyte (14) through the negative electrode chamber (10) .
Claim 4
Dependent Claim
47 words
A secondary battery according to Claim 2, wherein the positive electrolyte circulating pump (18) has a delivery greater than that of the negative electrolyte circulating pump (31), whereby the pressure in the positive electrode chamber (8) is maintained higher than that in the negative electrode chamber (10).
Claim 5
Dependent Claim
36 words
A secondary battery according to Claim 2, wherein the circulation means includes valve means (24, 34) adapted to maintain a higher electrolyte pressure in the positive electrode chamber (8) than in the negative electrode chamber (10).
Claim 6
Dependent Claim
42 words
A secondary battery according to any one of Claims 2 to 4, wherein the volume of positive electrolyte (12) in the positive electrolyte storage tank (26) is greater than the volume of negative electrolyte (14) in the negative electrolyte storage tank (36).
Claim 7
Dependent Claim
112 words
A secondary battery according to Claim 1, wherein the circulation means comprises separate positive (18, 20, 22, 44) and negative (32) electrolyte circulation systems, and wherein the positive electrolyte circulation system includes a positive electrolyte circulating pump (18) and an electrolyte storage tank (44) interconnected by positive electrolyte circulating piping (20, 22) for circulating positive electrolyte (12) through the positive electrode chamber (8), and wherein the negative electrolyte circulating system includes a negative electrolyte circulation piping (32) for returning to the electrolyte ' storage tank (44) negative electrolyte (14) corresponding to the positive electrolyte (12) permeated from the positive electrode chamber (8) to the negative electrode chamber (10) through the separator (6).
Claim 8
Dependent Claim
31 words
A secondary battery according to Claim 6, wherein the negative electrolyte circulation piping (32) includes a portion (46) connected at least to a lower part of the negative electrode chamber (10).
Claim 9
Independent Claim
183 words
A method of operating a metal-halogen battery, wherein the battery comprises at least one unit secondary cell having a positive electrode and a negative electrode which are arranged opposite to each other at a predetermined distance apart; a separator (6) arranged between the positive electrode and the negative electrode so as to define a positive electrode chamber (8) between the separator and the positive electrode and a negative electrode chamber (10) between the separator and the negative electrode; electrolyte (12, 14) contained in each of the positive electrode chamber and said negative electrode chamber, and circulation means (16, 18, 20, 22; 28, 31, 30, 32) for circulating said electrolyte, the separator (6) comprising an ion-permeable porous membrane adapted to prevent permeation of halogen molecules therethrough, and said electrolyte comprising a solution of a metal-halogen compound, the method comprising, at least during charging, the step of maintaining the electrolyte in the positive electrode chamber at a higher pressure than that in the negative electrode chamber, thereby to cause electrolyte to permeate from the positive electrode chamber to the negative electrode chamber through the separator.
Claim 10
Independent Claim
183 words
A method of operating a metal-halogen battery, wherein the battery comprises at least one unit secondary cell having a positive electrode and a negative electrode which are arranged opposite to each other at a predetermined distance apart; a separator (6) arranged between the positive electrode and the negative electrode so as to define a positive electrode chamber (8) between the separator and the positive electrode and a negative electrode chamber (10) between the separator and the negative electrode; electrolyte (12, 14) contained in each of the positive electrode chamber and said negative electrode chamber, and circulation means (16, 18, 20, 22; 28, 31, 30, 32) for circulating said electrolyte, the separator (6) comprising an ion-permeable porous membrane adapted to prevent permeation of halogen molecules therethrough, and said electrolyte comprising a solution of a metal-halogen compound, the method comprising, at least during charging, the step of maintaining the electrolyte in the positive electrode chamber at a higher pressure than that in the negative electrode chamber, thereby to cause electrolyte to permeate from the positive electrode chamber to the negative electrode chamber through the separator.
References Cited (Backward Citations)
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