A remote controlled battery cell monitoring and control system that utilizes empirical and theoretical data to compare performance, sensor data, stored patterns, historical usage, use intensity indexes over time and tracking information to provide a sophisticated data collection system for batteries. This tracking is designed to better the specifications, designs, training, preventative maintenance, and replacement and recycling of batteries.

A battery management apparatus according to an embodiment of the present disclosure includes a measuring unit configured to measure a charge voltage, a charge current, a discharge voltage and a discharge current in the process of charging and discharging a battery according to a preset charge C-rate and a preset discharge C-rate, and a control unit configured to receive information about the voltage and current of the battery from the measuring unit, calculate a charge resistance for each voltage of the battery based on the charge voltage and the charge current, calculate a discharge resistance for each voltage of the battery based on the discharge voltage and the discharge current, calculate a resistance ratio between the charge resistance and the discharge resistance for each voltage of the battery, and set a discharge C-rate for the battery based on the resistance ratio calculated for each voltage of the battery.

Systems and methods for managing flow batteries utilize a battery management controller (BMC) coupled between a flow battery and a DC/DC converter, which is coupled to an electrical grid or a photovoltaic device via an inverter. The inverter converts an AC voltage to a first DC voltage and the DC/DC converter steps down the first DC voltage to a second DC voltage. The BMC includes a first power route, a second power route, and a current source converter coupled to the second power route. The BMC initializes the flow battery with a third DC voltage using the current source converter until a sensing circuit senses that the voltage of the flow battery has reached a predetermined voltage. The sensing circuit may include a capacitor, which has a small capacitance and is coupled across each cell of the flow battery, coupled in series between two resistors having very large resistances.

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

Devices, methods, systems, and computer-readable media for an auto-tunable wireless charger are described herein. One or more embodiments include a tuner comprising a directional coupler connected between a frequency generator and a tuning cap to receive reflections on a transmit line of the directional coupler, and a controller coupled to the directional coupler and the tuning cap to monitor the reflections on the transmit line and to adjust the tuning cap based on the monitored reflections on the transmit line.

A charging apparatus and charging method. The apparatus includes a step-current adjustment circuit and an inertial link circuit. The step-current adjustment circuit is configured to determine a first current value based on a charging current condition, and provide a current of the first current value to the inertial link circuit, where the charging current condition includes a temperature and a charge state of the battery, and determine a second current value based on a present charging current condition and in response to the charging current condition changing, and provide a current of the second current value to a current smoothing module. The inertial link circuit adjusts the charging current from the first current value to the second current value in response to the received charging current being converted from the first current value to the second current value, and continuously outputs the adjusted current to the battery.

Provided are a method and an apparatus for rapidly charging a battery, such that a battery can be rapidly charged while having an extended lifetime. The method for charging a battery according to the present invention charges a battery by starting from an initial charging rate higher than 1 C, while stepwise decreasing the charging rate, such that a negative electrode potential of the battery does not drop to a level less than or equal to 0V. An occurrence of Li-plating of a negative electrode of the battery can be prevented by the criteria for preventing the negative electrode potential from dropping to a level less than or equal to 0V, thereby providing an effect of rapidly charging the battery while extending the lifetime of the battery.

An user-interactive charging paradigm is presented that tailors the device charging to the user's real-time needs. The core of approach is a relaxation-aware charging algorithm that maximizes the charged capacity within the user's available time and slows down the battery's capacity fading. The approach also integrates relaxation-aware charging algorithm existing fast charging algorithms via a user-interactive interface, allowing users to choose a charging method based on their real-time needs. The relaxation-aware charging algorithm is shown to slow down the battery fading by over 36% on average, and up to 60% in extreme cases, when compared with existing fast charging solutions. Such fading slowdown translates to, for instance, an up to 2-hour extension of the LTE time for a Nexus 5X phone after 2-year usage, revealed by a trace-driven analysis based on 976 charging cases collected from 7 users over 3 months.

A power management system includes a battery charging system, a power supplying system, a first switching module, and a second switching module. The power management system is switched between the battery charging system and the power supplying system via the first switching module and the second switching module. With a charging electric energy generated by the waveform generating module, the battery charging system could restore the aging battery or the battery with degraded performance to a better state when the batteries are charging. By sensing a battery state of batteries, the power supplying system provides a supplementing power to the batteries, and the supplementing power and a power of the batteries could be supplied to a load together.

A battery monitoring device monitors a battery having a plurality of cell groups in which a plurality of cells is connected in series. The battery monitoring device comprises at one or more integrated circuit units, each of which corresponds to each cell group, that respectively measure the voltages of the cells of the cell group and performs cell balancing in order to adjust the capacities of the cells of the cell group; a control unit that controls the integrated circuit unit; and a power supply unit that supplies power to the control unit. The control unit causes the integrated circuit unit to start or to stop cell balancing, and sets a timer period for starting or stopping supply of the power.