Abstract: In a particular embodiment, an apparatus is disclosed that includes a battery pack structure that includes a plurality of battery cells. The apparatus also includes wireless battery management system that includes a first wireless communication device, a second wireless communication device, and a radio frequency passive repeater. The radio frequency passive repeater includes a conductor cable, a first antenna at a first end of the conductor cable, and a second antenna at the second end of the conductor cable. In this example embodiment, the first antenna is located within a first wireless signal reception zone of the first wireless communication device and the second antenna is located within a second wireless signal reception zone of the second wireless communication device.

Abstract: A system and method of in cell sensing is provided. The method may include measuring sensing data from a sensor assembly hermetically sealed within a battery cell. The sensor assembly may include a sensing element, a processor and a radio. The method may further include sending and receiving the sensing data, via the sensor assembly. The sensing data may include at least one of temperature, pressure, voltage and shock of the battery cell.

Abstract: A battery management system includes a primary module in wireless communication with a plurality of sensing, or secondary, modules over a range of frequencies within a predetermined frequency band. Each of the primary module and the sensing modules can be configured to transmit with an antenna polarization setting chosen from a plurality of polarization settings. Each of the sensing modules is configured to communicate with the primary with a predetermined one of its polarization settings for each channel. The primary module is also configured to communicate with a respective secondary module with a predetermined polarization setting for each channel.

Abstract: A battery management system includes a primary module in wireless communication with a plurality of sensing, or secondary, modules over a range of frequencies within a predetermined frequency band. Each of the primary module and the sensing modules can be configured to transmit with an antenna polarization setting chosen from a plurality of polarization settings. Each of the sensing modules is configured to communicate with the primary with a predetermined one of its polarization settings for each channel. The primary module is also configured to communicate with a respective secondary module with a predetermined polarization setting for each channel.