The present disclosure relates to a system with a household appliance, a charging station and a plurality of battery units. A control of the system is configured so that a battery unit connected to the charging station can be charged in dependence on a discharge of a battery unit which is connected to the household appliance for operating the household appliance to perform a use operation. The present disclosure further concerns a household appliance and a charging station. It is thereby made possible to perform particularly long use operations with only two battery units or at least a reduced number of battery units without an interruption for charging a battery, and at the same time to achieve the longest possible service life of the battery units.

A power storage device 20 comprises: a plurality of power storage elements C1-C6 that are connected in series; energy transfer circuits 40 provided respectively to the plurality of power storage elements C1-C6; a common bus 50 to which the energy transfer circuits 40 of the plurality of power storage elements C1-C6 are commonly connected; and a control device 70. Each energy transfer circuit 40 includes one or a plurality of switching transformers Tr, each switching transformer having a first winding 41A that is connected to the power storage elements C1-C6 and a secondary winding 41B that is connected to the common bus 50. The control device 70 uses the switching transformers Tr of the energy transfer circuits 40 to transfer energy between the power storage elements via the common bus 50, thereby equalizing the voltages of the power storage elements C1-C6. The common bus 50 is in an electrically floating state.

A battery system includes a battery pack including a plurality of cells, and an ECU. The ECU calculates a current distribution in each cell using a ladder circuit network model, the ladder circuit network model being obtained by geometrically modeling an interior of the cell using a plurality of resistance elements and a plurality of power storage elements. The ECU calculates the current distribution in the cell by applying, to the ladder circuit network model, a resistance distribution in the cell calculated based on a salt concentration distribution in the cell.

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.

Methods, systems, and devices for power electronics-based (PE-based) battery management. A system may include a set of battery strings, where each battery string may include a set of battery modules, and where each battery module may include a set of battery cells. The system may also include a set of power converters, where each power converter may be coupled with at least one battery string. A power electronics-based (PE-based) BMS may provide one or more battery management functions for at least one corresponding battery string while also monitoring or controlling a corresponding power converter.

A method for managing a plurality of stacks of electrochemical cells, where the plurality of stacks are electrically coupled in parallel in a battery. The method includes (a) operating the plurality of stacks to execute a global operating strategy of the battery, (b) changing respective operating points of one or more first stacks of the plurality of stacks to execute a local operating strategy, (c) changing respective operating points of one or more second stacks of the plurality of stacks to maintain the global operating strategy of the battery while executing the local operating strategy, and (d) after completing execution of the local operating strategy, further changing the respective operating points of the one or more first stacks to compensate for change in the state of charge of the one or more first stacks caused by executing the local operating strategy.

A battery management circuit is a battery management circuit that manages an energy storage device including battery cells and capacitors, and includes: a first switching circuit that connects a first capacitor among the capacitors and a first battery cell among the battery cells in parallel; a second switching circuit that connects the first capacitor and two or more series-connected battery cells other than the first battery cell among the battery cells in parallel; and a control circuit that performs a first control of repeatedly switching between the connection by the first switching circuit and the connection by the second switching circuit.

The present application relates to a system and method for vehicle battery management, a storage medium, and a server system. The system for vehicle battery management includes: a communications subsystem configured to receive battery signal data in a distributed message queue; a metadata management subsystem configured to store battery information; and a distributed processing subsystem configured to parse the battery signal data based on the battery information, to obtain parsed data and alarm data. In this way, centralized battery management can be implemented, thereby overcoming disadvantages in terms of alarms/warnings generated by the batteries themselves.

Provided is a watchdog system including: a software area including a bootloader area and an application area, and a shared memory area storing the last watchdog refresh timing; and an external watchdog module refreshing a watchdog when a transmitted refresh request timing corresponds to window open time in response to a refresh request transmitted from either the bootloader area or the application area and based on the last watchdog refresh timing transmitted from the shared memory area and the transmitted refresh request timing.

A device for electropolishing an energy storage device having at least one lithium-ion cell comprises at least one actuatable first switch which is connected in series to a capacitor and an electrical resistor for current limitation parallel to at least one lithium ion cell, wherein an apparatus for discharging the capacitor is connected in parallel at least to the capacitor (C). The invention further relates to a charger and to a method for operating the charger.