This invention relates to a storage battery provided with an improved liquid feeding device and gas exhausting device. This storage battery is formed of a storage battery provided with a monoblock battery container containing such battery elements as plates and separators for each cell and with a novel liquid feeding device and gas exhausting device in a lid. The liquid feeding device has a liquid supplying part communicating with a water tank or an air source and with each cell through an electrolyte level setting tube. The gas exhausting device is formed by containing a valve which closes the passages into each cell at the time of feeding the liquid but can open the above mentioned passage when oxygen and hydrogen gases generated within the storage battery are to be replaced with air fed into each cell from the liquid supplying part. The storage battery of the present invention, by the above mentioned liquid feeding device and gas exhausting device, enables liquid to be safely fed to a fixed level without an explosion within the battery and also allows the operation to be carried out very simply and positively.
An improvement in a water-filling system for batteries, which protects battery cells from damage caused by hydrogen explosions occurring at other cells, is a check or stop valve, placed in the fluid communication lines between two cells, which allows passage of water, but blocks passage of an explosive shock wave.
The invention discloses an accumulator container comprising a box (2) presenting one or more element-containing cells (3), each of said cells presenting at least one tube (5) for the inlet of the electrolyte. Said tube (5) has one end connected with an opening (6) made in the lid and its other end arranged near the bottom of the container. Said box presents a lid having at least one first inlet opening (6), connected through channels (71, 72, 73, 74, 75, 76) for the distribution of the electrolyte with electrolyte inletting tubes (5, 51), found in the box and in the lid, and at least one second outlet opening (11) connected with level tubes (81), each belonging to each cell.
A battery watering (8) system using a plurality of cells (14) and modules (12). Watering ramps (11) communicate water from a reservoir (18) to a series of interconnected watering caps (16). A reversible pump (30) is positioned below the watering caps (16) such that water within the watering caps (16) and interconnecting conduits (26, 28) drains through the pump (30) and into the reservoir (18) by syphon when no voltage is applied to the pump (30). A controller (39) automatically operates the watering system (8) by sensing the amp hours used since the last watering and determines whether or not the battery needs water. Successful battery watering or system failure are signaled (40) to the operator.
A non-resealable vent closure for galvanic cells, such as nonaqueous oxyhalide cells, which comprises a member force-fitted within a vent orifice and wherein a corrosion-resistant material which is not an integral part of the force-fitted member is disposed between the wall defining the vent orifice and the force-fitted member so as to predictably insure venting after a predetermined gas pressure build-up within the cell.
