An embodiment provides a battery apparatus including: a battery module including a plurality of battery cells; and a battery management system that receives operation information including mode information and task information about an operation being performed by the battery module from the battery module and that generates a control signal with respect to the battery module based on the operation information to transmit it to a battery module connected thereto. Wherein one mode includes a plurality of tasks of which order is predetermined.

Electric power is distributed among wireless communication apparatuses while, at the same time, an electric power level required to operate a wireless communication function in the wireless communication apparatus is maintained. A wireless communication apparatus includes an electric power storage section, a wireless communication section, and a control section. The electric power storage section stores electric power. The wireless communication section engages in wireless communication with other wireless communication apparatuses by using the electric power stored in the electric power storage section. The control section controls passing of electric power stored in the electric power storage section by using the electric power level required to operate a wireless communication section as a threshold. At this time, the control section performs control such that electric power is passed to or from other wireless communication apparatuses according to a priority level assigned to each of the wireless communication apparatuses.

Main management unit manages the plurality of power storage modules via the plurality of sub-management units. Main management unit and the plurality of sub-management units are daisy-chain connected by power line. Main management unit can supply power from power storage unit other than the plurality of power storage modules to the plurality of sub-management units via power line. Main management unit and the plurality of sub-management units respectively include communication units. Each of communication units superimposes a communication signal on power line.

A battery control device that controls a battery assembly includes a first determining unit that determines whether a voltage difference between minimum and maximum values of OCVs of battery cells constituting the battery assembly and having an SOC-OCV characteristic curve including a flat region is equal to or larger than a predetermined voltage value, a second determining unit that determines whether the OCV of each battery cell is lower than a lower-limit voltage of the flat region, or is equal to or higher than the lower-limit voltage and lower than an upper-limit voltage, or is higher than the upper-limit voltage, a controller that executes control selected from SOC raising control, SOC lowering control, and SOC keeping control of the battery cells, based on determination results of the first and second determining units, and a processor that homogenizes the SOCs of the battery cells controlled by the controller.

An ECU performs processing including obtaining a current in a battery assembly, calculating a current in each battery, calculating an SOC of each battery, calculating an OCV of each battery, calculating ΔOCV, calculating an average value Ave of ΔOCVs, carrying out current restriction control when the average value Ave exceeds a first range and exceeds a second range, providing a warning signal when the average value Ave does not exceed the second range, and carrying out normal current control when the average value Ave does not exceed the first range.

Subjecting batteries with a plurality of cells to a balancing is known. Active balancing is carried out between adjacent cells or cell groups by means of a bus across uninvolved cells. Using this charge transfer for electrochemical impedance spectroscopy is known. The problem is to provide a system and method with which EIS measurements can be carried out on a battery using significantly less equipment outlay, with as little energy loss as possible, on batteries with high capacity and also on those with low excitation frequencies. The problem is solved in that charge is transferred back and forth between a first number of accumulator cells and a second number of accumulator cells during determination of at least one voltage value. The first and second numbers of accumulator cells are wired in series, and the first and second number is at least two.

Temperature controlled Battery Pack; a Method of protecting a large battery pack from thermal stresses; all weather Battery module; an apparatus and method for charging a battery pack, and decoupling the charging voltage from the battery pack voltage; an apparatus and method for discharging the hybrid battery modules, and extending the range of the battery pack; Battery pack controller—safety and reliability of battery pack. A method of providing flood protection to a large battery pack. A method of cooling the battery pack in extreme hot temperatures. A method of heating the battery pack in extreme cold temperatures. A method of repurposing the battery module (BM) Charging and balancing circuit is one of the key components of the battery pack. The invention constitutes an apparatus of Energy discharging split circuit installed within each BM, and an energy management algorithm installed in the battery pack controller. The energy discharging circuit mixes the current output of batteries and capacitors within each BM, as per the instructions from the battery pack controller algorithm. The algorithm takes the SoH and SoC of the batteries in the weakest BMs into account to calculate the mix of current from batteries and capacitors, and selectively instructs each BM. A method for discharging the battery BMs, and extending the range of the battery pack. Battery pack controller is the Master controller of the battery pack.

An energy storage system, to improve operating efficiency and system reliability that exist when a component in the energy storage system is faulty, and avoid a waste of resources. The energy storage system includes a plurality of energy storage branches, at least one switch unit, and a control circuit. Each of the energy storage branches includes a first bus, a string-level converter, and a battery string that are sequentially connected in series, a plurality of balancing converters, and a shared bus. The battery string includes a plurality of battery units connected in series, and each of the battery units includes one battery pack. The battery pack is connected to an input side of one corresponding balancing converter, and output sides of the plurality of balancing converters are separately connected to the shared bus.

A first battery of a battery system can include a thermoelectric component (TEC) that produces electric energy from thermal energy that the first battery generates. The TEC is used to charge a second battery of the battery system, while maintaining proper thermal conditions for the first battery. The battery system can be used to support information technology (IT) equipment by acting as backup power during a power outage, and/or to provide supplemental power under peak power conditions.

An electronic device included a first energy storage device coupled to a second energy storage device by a conductor. A charging node is coupled to the first energy storage device. Another conductor couples the charging node to the second energy storage device. A switch is electrically coupled between the conductor and the second energy storage device. A control circuit opens the switch, thereby allowing a first charging current to flow from the charging node to the first energy storage device through the conductor and a second charging current to flow from the charging node to the second energy storage device through the other conductor and closes the switch when a difference between a voltage of the first energy storage device and a voltage of the second energy storage device is within a predefined voltage difference threshold.