A distributed battery management system for a multi-module traction battery pack of an electric vehicle is provided. The battery management system comprises an analog-to-digital converter (ADC) integrated into a battery module of the traction battery pack of the electric vehicle, and a master controller external to the battery module and in digital data communication with the ADC. The ADC converts an analog signal indicative of a sensed voltage associated with one or more cells of the battery module into a digital signal indicative of the sensed voltage. The master controller performs a function associated with the traction battery pack of the electric vehicle based on the sensed voltage.

An apparatus and method of balancing cells in a battery using an isolated power supply and pairs of switches to direct power to cells at a lower state of charge to bring them into balance with cells at a higher state of charge.

An apparatus and method of balancing cells in a battery using an isolated power supply and pairs of switches to direct power to cells at a lower state of charge to bring them into balance with cells at a higher state of charge.

A battery system may include a battery pack including a plurality of battery modules, a switching circuit connecting the plurality of battery modules in series or in parallel, and a battery management system (BMS) configured to control the switching circuit so as to connect the plurality of battery modules in series in a discharge mode to supply power from the battery pack to an external device and in a charge mode to charge the battery pack by receiving the power from the external device. In addition, the BMS may be configured to control entering a module balancing mode when a voltage difference among the plurality of battery modules exceeds a predetermined reference value, and control the switching circuit so as to connect the plurality of battery modules in parallel in the module balancing mode.

A downhole power system includes an energy storage adapted to operate at high temperatures, and a modular signal interface device that serves to control the energy storage component as well as offer a means of data logging at high temperatures. The controller is fabricated from pre-assembled components that may be selected for various combinations to provide desired functionality. The energy storage may include at least one ultracapacitor.

Systems and apparatus may carry out analysis of battery physical phenomena, and characterize batteries based on phenomena occurring in particular time and/or frequency domains. These systems may be additionally responsible for charging and/or monitoring a rechargeable battery. Examples of battery physical phenomena include mass transport (e.g., diffusion and/or migration) in battery electrolytes, mass transport in battery electrodes, and reactions on battery electrodes.

A device includes a battery module, and an inverter configured to convert a DC voltage output from the battery module into an AC voltage. The battery module includes battery cells connected in series, and a state detection unit configured to detect a state of each battery cell of the battery cells. An output voltage of the battery cells is input to the inverter without being stepped up. At least some battery cells of the battery cells are reused battery cells. The electrical storage device includes a switching unit configured to connect/disconnect an electrical connection between the battery cells and the inverter. The switching unit is controlled into a disconnected state when a voltage of the battery cells or the DC voltage on an input side of the inverter exceeds a threshold.

A charging control method, and an electronic device and/or a storage medium implementing the charging control method, includes: determining a current state parameter of a battery, wherein the battery is charged with a first charging parameter corresponding to a first charging stage defined in a staged charging strategy; determining an expected state parameter of the battery after continuing to be charged for a preset time period based on the current state parameter and the first charging parameter; and charging the battery with a second charging parameter corresponding to a second charging stage defined in the staged charging strategy, when the expected state parameter matches the second charging stage.

A converter system, e.g., for vehicle-to-vehicle charging, includes galvanically-isolated modular first and second converters having the same maximum voltage rating, a direct current (DC) voltage bus interconnecting the converters, and an electronic controller. An input voltage to the DC bus is converted into an output voltage via switching control signals to the modular converters. The system's voltage rating may equal the maximum of the input and/or output voltage, or it may equal the maximum input voltage and be about 50-percent of the maximum output voltage. The maximum input and output voltages may be equal. When the voltage rating is about 50-percent of the maximum input voltage, capacitors may be connected in parallel with the modular converters on an input side thereof. Switching circuits may be connected to the bus to control the conversion of the input voltage via switching control signals.

An adaptive charging thermal optimization system for an electrified vehicle includes a set of thermal management components each configured to thermally condition a high voltage battery system of the electrified vehicle and a control system configured to detect whether the electrified vehicle is plugged into electrified vehicle supply equipment (EVSE) and, in response to detecting that the electrified vehicle is plugged into the EVSE, determine a set of charging parameters and limits for the high voltage battery system and the EVSE, determine a type or mode of the EVSE, determine a temperature setpoint for the high voltage battery system based on the charging parameters and limits for the high voltage battery system and the EVSE and the type or mode of the EVSE, and control the set of thermal management components based on the determined temperature setpoint and a measured temperature of the high voltage battery system.