One or more embodiments herein can facilitate charging and/or discharging of one or more units (e.g., battery cells and/or multi-cell battery clusters of battery cells) based at least in part on state of charge and/or state of health monitoring at one or more of the cell-level and/or cluster-level. An exemplary method can comprise monitoring, by a system operatively coupled to a processor, cell states of cells of a multi-cell battery cluster, and selectively determining, by the system, based on the cell states, a time-based order for electrically connecting the cells to an external apparatus for current flow between the external apparatus and the cluster. The cell states can be provided as a function of a cluster state of the cluster. The cell states can be provided as one or more of states of health of the cells or states of charge of the cells determined from the monitoring.

To provide a constant voltage DC supply device capable of supplying a direct current at a predetermined voltage for a long time irrespective of characteristics of a storage battery and the like. The constant voltage DC supply device for supplying a direct current at a predetermined voltage from a specific power generation unit, including: a plurality of power storage units 10a, 10b; a drive units 30 that is connected to the power storage units and rotating/driving by power supplied from any one of the power storage units; a plurality of the power generation units 40a, 40b connected to the drive units, respectively, and generating power by driving of the drive units; and a control unit 30 for controlling connection between the plurality of power storage units and the driving unit and between the power generation units other than the specific power generation unit 40b and the power storage units 40a, in which wherein the control unit executes control such that, when a voltage of the power storage unit supplying the power to the drive unit falls to a first voltage or less, the power is supplied from the power storage unit other than power storage part and to charge at least one power storage part other than that power storage unit is charged.

The described technology provides a method for dynamically adjusting operating voltage of a device, including receiving device characteristics data related to a device, performing a margining test for the device to generate a performance curve characterizing variation of the device's current performance speeds at various operating voltages from expected performance speeds at the various operating voltages, determining an operating voltage for the device based on the device characteristics data and the performance curve, and adjusting the operating of the device based on the determined operating voltage.

The present disclosure provides a charging system and method and a power adapter. The system includes: a battery; a first rectification unit, configured to output a voltage with a first pulsating waveform; a switch unit, configured to modulate the voltage with the first pulsating waveform; a transformer, configured to output a voltage with a second pulsating waveform according to the modulated voltage; a second rectification unit, configured to rectify the voltage with the second pulsating waveform to output a voltage with a third pulsating waveform; and a control unit, configured to output the control signal to the switch unit to decrease a length of a valley of the voltage with the third pulsating waveform such that a peak value of a voltage of the battery is sampled.

A charging circuit includes: an interface; a plurality of charging management components connected to the interface in parallel; and a plurality of battery packs, wherein each of the plurality of battery packs includes a battery or a plurality of batteries connected in series with each other, the plurality of battery packs are connected in series with the plurality of charging management components, respectively, and the plurality of battery packs are connected in parallel; wherein the plurality of charging management components are electrically connected with each other to adjust, through signal interaction between the plurality of charging management components, a charging current that is input to each of the battery packs, such that a time period of a maximum charging current for each battery pack is different from a time period of a maximum charging current for another battery pack.

A bidirectional power supply system receives power from a low voltage (LV) primary power supply, providing power to a control unit of a LV board net in a first mode of operation. A high voltage (HV) board net is coupled to a HV traction battery. A DC-DC converter, in the first mode, transfers energy from the LV board net to the HV board net to power components of the HV board net via the primary power supply, and, in a second mode of operation, transfers energy from the HV board net to the LV board net to power the control unit via the traction battery. The bidirectional power supply system includes a measurement element to detect whether the primary power supply is lost, and a switching element to switch operation of the DC-DC converter from the first mode to the second mode, when the primary power supply is lost.

A method to control storage into and depletion from multiple energy storage devices. The method enables an operative connection between the energy storage devices and respective power converters. The energy storage devices are connectible across respective first terminals of the power converters. At the second terminals of the power converter, a common reference is set which may be a current reference or a voltage reference. An energy storage fraction is determined respectively for the energy storage devices. A voltage conversion ratio is maintained individually based on the energy storage fraction. The energy storage devices are stored individually with multiple variable rates of energy storage through the first terminals. The energy storage is complete for the energy storage devices substantially at a common end time responsive to the common reference.

The battery pack of an EV is partitioned into multiple removeable and replaceable batteries to mitigate challenges associated with the power charging of battery in an EV. A set of control switches are linked in a control chain to control an orderly discharge of energy from the batteries disposed in the battery pack.

The invention relates to a battery (100) that works by regulating the power source (112) to provide a suitable voltage output so that the user's devices/products using the battery will have a high performance among several other advantages. The battery (100) comprises a positive terminal (102); a negative terminal (112); a power source (114); and a voltage regulation device (110). The voltage regulation device (110) is operatively connected to the positive terminal (102), the negative terminal (112) and the power source (114). The voltage regulation device (110) includes electronic components that are operatively connected to each other in order to regulate an output voltage in a programmed variable level.

A method of operating a medical device comprises electrically connecting a power device to the medical device. The method further comprises sensing at least one characteristic of the medical device with the power device. The method further comprises adjusting or maintaining one or more characteristics of an electrical connection feature of the power device according to the at least one observed characteristic such that the electrical connection feature of the power device is operationally compatible with an electrical connection feature of the medical device. The method further comprises operating the power device according to an operational profile associated with the medical device.