Battery with a pressure-limiting device, functional device with a battery and method for pressure-limiting

摘要

The invention relates to a battery (12) with a large number of battery cells (16), a predetermined number of the battery cells (16) being braced to form a cell stack (14) by means of a mechanical bracing device. A total pressure (P), which is composed of a clamping pressure (Pv) and a progressive swelling pressure of the operating-related swelling battery cells (16), acts on the battery cells (16) of the cell stack (14). In order to counteract the swelling of the battery cells (16) with a controlled counter pressure and to limit the total pressure (P) to a maximum permissible limit pressure (PG), the battery (12) has a shape holding device with a pressure compensation paste (28) and a pressure limiting device with at least one Pressure limiting element (24) for the pressure compensation paste (28). If the limit pressure (PG) is exceeded, the pressure compensation paste (28) can at least partially escape into the vicinity of the battery (12) through at least one overpressure opening (30) of the at least one pressure limiting element (24), whereby the total pressure (P) is reduced to the maximum permissible Limit pressure (PG) is limited.