| 摘要 |
792,204. Batteries; electric tests. ELECTRIC STORAGE BATTERY CO. Aug. 30, 1955 [Sept. 16, 1954], No. 24815/55. Classes 37 and 53. A deferred-action battery comprises a sealed evacuated container 10, 11, 13 holding the battery cells and a flexible bag 34 containing the electrolyte, the container and the bag being connected by a passage incorporating an obturating diaphragm 40 which may be pierced by a dart 43 when the battery is to be actuated. The passage between the bag and the container is formed by a flexible neck 38 of the bag and by an elbow fitting 31 which communicates with a manifold 18 leading to individual cells within the container. The container 10, 11, 13 and the manifold 18 are surrounded by a sealed metal outer container 21-23. The dart 43 is entirely enclosed by the flexible neck 38 and is moved by an explosive squib held within a housing 43 and ignited by an electric current supplied through a plug 16. The container 10, 11, 13 is evacuated through a tube 71 leading into the elbow fitting 31 and the outer container 21-23 is also evacuated through a spring-loaded valve 76 mounted on the lid 13 of the container 10, 11, 13 and in communication with one cell of the battery. The entire assembly is surrounded by another sealed casing 23. The temperature of the outer container 21-23 is regulated by an electric heater fed through a thermostat 57 and the temperature of the electrolyte in the flexible bag is regulated by an electric heater 56 fed through a thermostat 59 which is mounted on a metal plate 58 bearing on the bag and is insulated from the remainder of the battery. Both heaters are fed through the plug 16. The degree of vacuum in the outer container 21-23 may be tested by a device comprising a metal tube 80, passing through the lid 23, into which is sealed an insulating ball 81, e.g. of glass, carrying a wire electrode 82. The electrode 82 is connected to a terminal 84 outside the can and the lid 23 is earthed to the outer casing. The vacuum is measured by observing the current when a high voltage is applied between the terminal 84 and the outer casing. |
