| 摘要 |
A quasi-bipolar battery is disclosed which has no casing, making it especially suitable for high-voltage, high-current applications where battery weight and cost are considerations. The quasi-bipolar battery is constructed of alternating bipolar plates and separator sheets, each of which has a frame of hard rubber which has been injection-molded thereon. This frame forms a gas-tight seal when these sheets and plates are stacked and compressed together to form the battery. Each biplate is formed with a tube of woven lead yarn which is slipped over a non-conductive biplate during the manufacturing process and prior to the injection-molding of the rubber frame. The injection-molded rubber frames bond beyond to the edges of the biplate and the lead yarn, and thereby prevent electrolyte leakage between cells by migration along the strands of lead yarn. When the battery cell stack is assembled and compressed axially, the compliant rubber frames interface with one another to form the seal and to permit lateral heat transfer. A thermal insulator at each axial and longitudinal end of the battery cell stack prevents axial heat transfer, thereby maintaining all the battery cells at a single, preferred operating temperature that provides maximum efficiency. Venting passages are also formed within the rubber frames to discharge gas buildup, which might occur under certain conditions.
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