Abstract: A power control system measures individual battery cell voltages and temperatures of a plurality of series-connected battery cells utilizing an Analog Front End, a controller that collects and analyzes the data digitally transferred to it by the Analog Front End, and a Fuel Gauge. Processes performed within the controller are configured to provide optimized representations of the data to the Fuel Gauge to improve its performance.

Abstract: An energy delivery system that combines multiple energy storage sources/systems of different chemical compositions or physical construction with a common control system that is configured to output energy from the system as a function of the different performance characteristics of each system, and is therefore capable of optimizing various operational characteristics of the combined system. The control system is configured to utilize a separate variable impedance network for each energy storage system to adjust the relative output current or discharge rate of each energy storage system, such as to optimize cycle life, depth of discharge, temperature, delivered power, and/or perceived safety of each energy storage system.

Abstract: A backup system for a power supply unit providing power to a load via a distribution bus includes a power source, a network of switching elements coupled between an output terminal of the power source and the distribution bus, diodes coupled in parallel with the switching elements, and a controller configured to selectively activate or deactivate each of the switching elements to enable the power source to power the load via the distribution bus. The switching elements may be transistors, and the diodes may be parasitic body diodes of the transistors. The power source may be a battery, such as a rechargeable battery. An output voltage level from the battery may be regulated by the controller as a function of a number of the activated or deactivated transistors.

Abstract: A battery monitoring circuit measures individual battery cell voltages and temperatures of a plurality of series-connected battery cells utilizing an Analog Front End, a controller that collects and analyzes the data digitally transferred to it by the Analog Front End, and a Fuel Gauge configured to measure a single battery cell.