A battery device comprises a case, a core pack, a signal unit and a non-volatile memory, wherein the core pack, the signal unit and the non-volatile memory are disposed in the case. The case has a first transmission terminal and a second transmission terminal. The signal unit is electrically connected to the core pack and the first transmission terminal, and is configured to output a voltage signal associated with the state of the core pack through the first transmission terminal. The non-volatile memory is electrically connected to the second transmission terminal, and is configured to receive and store information associate with the core pack through the second transmission terminal.

A computing device configured to removably attach a component comprises a housing comprising first and second device electromagnets. A wireless charging transmitting antenna is between the electromagnets. Instructions are executable by a processor to synchronize a first device current through the first device electromagnet with a first component current through a first component electromagnet of the component to attract the electromagnets, and to synchronize a second device current through the second device electromagnet with a second component current through a second component electromagnet of the component to attract the electromagnets.

A ring includes a controller. The ring can also include a power source configured to power the controller. The ring further can include a charging unit. The charging unit can be configured to convert a first form of energy into a second form of energy. The charging unit also can be coupled to the power source to provide the second form of energy to the power source. The controller can execute instructions to control operation of a user interface. Other embodiments are disclosed.

A monitoring system includes monitoring devices provided in a monitored device and monitoring the monitored device, and a controller that wirelessly communicates with the monitoring devices to acquire monitoring information of the monitored device from the monitoring devices. The monitored device is switchable between an operating state and a non-operating state. In the non-operating state of the monitored device, the monitoring devices establish communication connections in which at least one of the monitoring devices acts as a communication master and others of the monitoring devices act as communication slaves for the communication master. In the non-operating state of the monitored device, the controller does not act as a communication master for the monitoring devices.

Provided is a control device configured to control that controls a plurality of operations that consumes environmentally generated power in at least one control mode of a plurality of control modes. The plurality of operations includes an operation A including writing of data (DAT) from a sensor, an operation B including recognition of the data (DAT) written by the operation A, and an operation C including transmission of the data (DATrecog) after the recognition by the operation B. The plurality of control modes includes a first control mode of controlling the plurality of operations so as to perform, in preference to the operation A for the data (DAT) from the sensor, at least one of the operation B and the operation C for the previously processed data (DAT) from the sensor, and a second control mode of controlling the plurality of operations so as to perform the operation A for the data (DAT) from the sensor in preference to the operation B and the operation C for the previously processed data (DAT) from the sensor.

A simulation test system and a simulation test method are provided. The simulation test system includes a control device, a power setting device, and a data capture device. The control device generates a context control signal corresponding to one of a plurality of operating contexts. The power setting device generates at least one of a simulated charging power and a simulated load in response to the context control signal and provides at least one of the simulated charging power and the simulated load to a device under test to configure the device under test to generate test data in response to at least one of the simulated charging power and the simulated load. The data capture device captures the test data and provides the test data to the control device.

A disclosed shovel includes a hydraulic pump, a hydraulic actuator driven by hydraulic fluid supplied from the hydraulic pump, an electric motor configured to drive the hydraulic pump, a power storage device configured to be chargeable with power from an external power source to supply driving power to the electric motor, an input device configured to receive input from a user, an imaging device configured to acquire information about surroundings of the shovel, and a control device configured to set a target value of a charge amount of the power storage device, the power storage device being charged with power supplied from the external power source, in response to a predetermined input received by the input device.

Provided are a charging circuit for a battery pack and a working system of a ship. The charging circuit includes a first switch circuit, a clamp gating circuit and a battery management circuit. The first switch circuit includes a first switch terminal, a second switch terminal and a switch control terminal. The clamp gating circuit includes a first clamp terminal, a second clamp terminal and at least one gating control terminal. The battery management circuit is configured to separately acquire charging voltages of multiple battery cells and a battery pack voltage between a first electrode and a second electrode in real time and control, according to the charging voltages and the battery pack voltage, a gating control signal supplied to each of the at least one gating control terminal and a switch control signal supplied to the switch control terminal.

A system and method for charging and discharging management of an energy storage device. The system includes an electrical signal collection circuit, a condition monitoring device, a processor, a gating mechanism, a control circuit, and a bidirectional switching power supply. The processor is configured to: in response to the energy storage device being in a charging state, determine a charging parameter based on a voltage signal and condition data of at least one battery core, send the charging parameter to the control circuit; in response to the energy storage device being in a discharging state, determine a discharging parameter based on the voltage signal of the at least one battery core, and the discharging load of at least one discharging port, send the discharging parameter to the control circuit, the discharging parameter including the target discharging battery core.

An electrically powered vehicle may include a DC bus and a plurality of batteries, each coupled in parallel to the DC bus. At least one switch is coupled in series between at least one battery of the plurality of batteries and the DC bus and a plurality of inverter circuits may each be coupled in parallel to the DC bus. A plurality of motors may each be coupled to a respective inverter circuit of the plurality of inverter circuits. In various embodiments, the electrically powered vehicle may further include a plurality of switches, each switch coupled in series between a respective battery of the plurality of batteries.