A power management system and a power management method for a main system are provided. The power management system includes plural battery units and a charging management unit. A charging rule is executable by the charging management unit. The charging management unit is electrically connected with the plural battery units and the main system to dynamically detect electric quantities of the respective battery units and a system consumption power level of the main system. The charging management unit calculates a system surplus supply power level according to a system supply power level and the system consumption power level. The charging management unit dynamically adjusts charging capacities of the respective battery units according to at least one of the electric quantities, the system surplus supply power level and the charging rule.

A portable power supply including a first subcore including a first plurality of battery cells, a second subcore including a second plurality battery cells and electrically connected in series with the first subcore, and a controller including an electronic processor. The controller is configured to receive a first voltage value indicative of a voltage of the first plurality of battery cells from the first subcore and a second voltage value indicative of a voltage of the second plurality of battery cells from the second subcore. The controller is further configured to determine a difference between the first voltage value and the second voltage value, compare the difference to a balance threshold, and perform a balancing operation when the difference is greater than or equal to the balance threshold.

A system for managing automated charging, the automated charging management system is provided. The system comprises a charging cord management device, a charging cord connector, a power supply, a device, a first charging cord, and a second charging cord. The charging cord management device is configured to locate the power supply. The charging cord management device is configured to align the second charging cord and the charging cord connector with the power supply. The charging cord connector is configured to be in contact with the power supply without user interaction.

A dual motor powered compact drive comprises two electrical motors powering the planetary gear mechanism. The dual drive can provide variable speed and torque. A single electric motor operated braking system with a screw-driven wedged brake pads is described using a compact test set-up. The system comprises at least one motor and a screw shaft connected to transmit the power to a sliding plunger, and braking pads located on a braking disc, and a force sensor applied to measure the braking force, and a device to measure the parameters of the braking motor and the parameters are used as the inputs to establish a control strategy. Systems and methods for monitoring a battery pack including multiple cells are provided. The battery management system further comprises a control strategy for implementing a balancing algorithm. A balancing strategy comprises a determination of battery cells to be balanced, and a calculated balancing current.

Methods of managing a lithium ion battery and of recovering branches and/or cells in the battery are provided, as well as battery management systems (BMS) and batteries implementing the methods. Branches and/or cells may be recovered by slow and deep discharging, followed by slow charging—to increase capacity, cycling lifetime and/or enhance safety thereof. BMSs may be configured to diagnose defective branches and/or cells and manage the recovery procedure with respect to changing operational loads the battery and the available internal and external charging sources.

A BMS includes cell supervising circuits connected to an alternating current power line via a transformer, and a BMU connected to the alternating current power line via a transformer. The BMU includes a control microcomputer which instructs at least one of the cell supervising circuits to control the state of charge of a secondary battery cell monitored by the at least one of the cell supervising circuits, based on pieces of information in the cell supervising circuits, the pieces of information indicating states of charge of secondary battery cells monitored by the cell supervising circuits.

Various embodiments of the present invention are directed at a method and system for recharging batteries for wireless electronic devices. According to one embodiment, a battery charging and monitoring system is disclosed. The system includes a host machine providing a plurality of charging slots and a plurality of wireless devices coupled to and powered by a plurality of batteries. The host machine is adapted to communicate with the plurality of wireless devices through a plurality of wireless links to monitor the plurality of batteries coupled to the wireless devices. According to another embodiment, an electronic device is disclosed. The electronic device is adapted to couple with at least a rechargeable battery and to negotiate with the rechargeable battery for an agreed range of power parameters. The electronic device is further adapted to accept power from and to provide power to the rechargeable battery at the agreed range of power parameters.

An electronic adjusting device (1) for an electric energy storing apparatus (100) of the type provided with batteries, said storing apparatus comprising a plurality of battery modules (10) electrically connectable with an electric load, said electronic adjusting device comprising a plurality of electronic adjusting units (2), each comprised in a corresponding battery module (10) to adjust the feeding current (IL) provided by the cells (11) of the said battery module to said electric load.

The present disclosure provides methods for charging batteries and systems configured to store electrical energy, the systems including batteries charged by the inventive methods.

A system and apparatus for autonomous charge balancing of an energy storage device of the microgrid. In one embodiment the apparatus comprises a power conditioner, coupled to the energy storage device, comprising a droop control module for operating the power conditioner, during an autonomous mode of operation, such that the state of charge of the energy storage device is autonomously driven toward the state of charge of at least one other energy storage device of the microgrid.