| abstract |
Systems and methods for detecting internal conditions of vehicle batteries are described. From this internal state information different physical properties of the battery can be measured, calculated or derived. A vehicle may include an electric motor, a battery for storing electric power to the electric motor, and a sensor connected to the battery for detecting a battery condition to receive an input signal and for wirelessly transmitting an output signal. indicating the battery condition. The sensor may be passive or built into the structure of the battery. The sensor may be a surface acoustic wave sensor having a magnetic field sensor, which may be a magneto-impedance detection device and a temperature sensor. |