Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO1997015958) SEMI-FLOODED BATTERY CELL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/015958 International Application No.: PCT/US1996/017026
Publication Date: 01.05.1997 International Filing Date: 25.10.1996
Chapter 2 Demand Filed: 20.05.1997
IPC:
H01M 10/34 (2006.01) ,H01M 10/52 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
34
Gastight accumulators
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10
Secondary cells; Manufacture thereof
42
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
52
Removing gases inside the secondary cell, e.g. by absorption
Applicants:
JONES, William, E., M. [GB/US]; US
Inventors:
JONES, William, E., M.; US
Agent:
HECHT, Gary, A.; Synnestvedt & Lechner 2600 Aramark Tower 1101 Market Street Philadelphia, PA 19107-2950, US
Priority Data:
60/005,94027.10.1995US
Title (EN) SEMI-FLOODED BATTERY CELL
(FR) ELEMENT DE BATTERIE D'ACCUMULATEURS SEMI-IMMERGE
Abstract:
(EN) A storage battery cell (38) having a positive electrode (20) and a negative electrode (22) which are immersed in a liquid electrolyte (14). The negative electrode (22) is partially exposed to a gas space (18) within the battery cell housing (12). A pressure relief valve (34) allows excess gas to escape the battery cell (38) while preventing air from outside the cell from entering the oxygen in the gas space (18). Exposing a section of the negative plate (22) to oxygen in the gas space (18) reduces water consumption of the cell (38) and extends the maintenance-free life of the battery.
(FR) La présente invention concerne un élément (38) de batterie d'accumulateurs, comportant une électrode positive (20) et une électrode négative (22) immergées dans un électrolyte (14) liquide. L'électrode négative (22) est partiellement découverte dans un volume gazeux (18) situé dans l'enceinte (12) de l'élément. Une soupape de décharge (34) permet à l'excès de gaz de s'échapper de l'élément (38) tout en empêchant l'air extérieur à l'élément de pénétrer dans l'oxygène occupant le volume gazeux (18). L'exposition d'une partie de l'électrode négative (22) à l'oxygène occupant le volume gazeux (18) réduit la consommation d'eau de la cellule et prolonge la durée de vie sans entretien de la batterie d'accumulateurs.
Designated States: CN, JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0862795CN1204421