Abstract: A battery includes a plurality of flat cells which are electrically connected in parallel and/or in series with one another and which, when disposed next to one another in rows perpendicular to their flat sides, form a substantially prismatic configuration. In order to obtain more accurate information about the state of the individual flat cells during operation of the battery and, for example, to allow such information to be used for matched temperature management, a heat dissipation plate, which is thermally linked to at least one flat side of a plurality of the flat cells and in each of which at least one temperature sensor is integrated, is provided in each case in the configuration. The battery may be used for spatially resolved battery temperature measurement.

Abstract: A power supply device has a power source providing a voltage and a monitoring device electrically connected to the power source. The monitoring device measures the voltage, the current, and the temperature of the power source when power is drawn from the power source, and interrupts the power draw if the voltage drops below a cutoff threshold. The cutoff threshold depends on the temperature at the power source and the current.