A method for managing a battery includes exchanging battery data between the battery and an onboard battery management system (BMS) of a mobile platform and between the battery and a charger BMS of a battery charger, and managing the battery based on the battery data.

A battery module including a plurality of battery cells and a cell balancing system having a respective battery cell monitoring module attached to each battery cell and a module carrier having second connection means for connection of a positive terminal of the battery cell to a negative terminal of an adjacent battery cell and for an electrical connection of a negative terminal of the battery cell to a positive terminal of another adjacent battery cell. The battery cell monitoring modules are connected to one another by a balancing bus for transmitting data and electrical current. The electronic battery cell monitoring modules are connected to the positive and negative terminals of the battery cell. The module carrier has two electrical lines and an energy storage module for storing electrical energy. The energy storage module is connected to the two electrical lines to take up or output electrical energy over them.

An energy storage device module comprises: a plurality of energy storage devices having a first energy storage device and a second energy storage device; a connection member configured to connect a first external terminal of the first energy storage device and a second external terminal of the second energy storage device adjacent to the first energy storage device; and a circuit board including a hole that passes through the first external terminal of the first energy storage device, a board protrusion supported by a curling processed portion formed in a body case of the first energy storage device, a first conductive metal layer formed in a region adjacent to the hole and in contact with the connection member, and a second conductive metal layer formed in a region of the board protrusion and in contact with the curling processed portion.

An equalizer circuit provides both passive and active cell voltage equalization in a battery pack to improve charge and discharge capacity at a low cost. The equalizer circuit is a bilevel circuit that uses both passive equalizers and active equalizers to balance cell voltage. The cells may be grouped into size limited sections which are balanced by passive equalizers. The sections are balanced by active equalizers to promote increased pack charge and discharge capacity. The equalizer circuit can use a current detector or a voltage controlled oscillator to assist in closed loop current control to reduce switching losses and permit use of smaller transistors. The equalizer circuit can use open line protection with capacitors to store excess charge and prevent voltage overload of the switching devices.

Module-based energy systems are provided having multiple converter-source modules. The converter-source modules can each include an energy source and a converter. The systems can further include control circuitry for the modules. The modules can be arranged in various ways to provide single phase AC, multi-phase AC, and/or DC outputs. Each module can be independently monitored and controlled.

Disclosed is an electronic device comprising: a housing; a seating portion formed inside the housing such that a first external electronic device and a second external electronic device are seated thereon; at least one interface that is electrically connected to the first external electronic device and to the second external electronic device and can transmit/receive power to/from the same; and a processor electrically connected to the at least one interface, wherein the processor acquires a first remaining time to use a first battery included in the first external electronic device connected through the at least one interface; the processor acquires a second remaining time to use a second battery included in the second external electronic device connected through the at least one interface; and the processor manages power of at least one of the first battery and the second battery such that the first remaining time to use the first battery and the second remaining time to use the second battery become substantially identical. Besides, various embodiments inferable from the specification are possible.

A battery system includes a plurality of converters wherein each converter converts an electric power between a corresponding block of a plurality of blocks and an auxiliary battery. A first equalization control is a control for, when a vehicle is in a ReadyON state, operating a converter corresponding to a lower-voltage block, of at least one pair of blocks of the plurality of blocks having voltage variations exceeding a threshold value, such that the lower-voltage block is charged with an electric power supplied from the auxiliary battery. A second equalization control is a control for, when the vehicle is in a ReadyOFF state, operating a converter corresponding to a higher-voltage block, of at least one pair of blocks of the plurality of blocks having the voltage variations exceeding another threshold value, such that the auxiliary battery is charged with an electric power supplied from the higher-voltage block.

An intelligent rechargeable battery pack having a battery management system for monitoring and controlling the charging and discharging of the battery pack is described. The battery management system includes a memory for storing data related to the operation of the battery, and the battery management system is also configured to communicate the data related to the operation of the battery to other processors for analysis.

A secondary power system is configured to connect to a motor vehicle having a powertrain comprising an engine and a first alternator. The secondary power system includes a second alternator connected to the engine, one or more electro-chemical storage devices coupled to the second alternator and configured to be charged by the alternator, and one or more inverter chargers. The inverter chargers may operate in a first mode to provide AC power to loads on the vehicle or in a second mode to receive alternative power and charge the storage devices. In an embodiment, the secondary power system includes multiple storage devices each comprising at least one electro-chemical storage pack and a logic. The storage devices are interconnected by a junction box. The logics within each storage device may selectively disrupt power flow from the junction box upon detection of an error condition.

A method and apparatus for autonomous charge balancing of an energy storage device of the microgrid. In one embodiment the method comprises obtaining, at a droop control module of a power conditioner coupled to an energy storage device in a microgrid, an estimate of a state of charge (SOC) of the energy storage device; introducing a bias, the bias based on (I) the estimate of the SOC and (II) a target SOC value for each energy storage device of a plurality of energy storage devices in the microgrid, to a droop control determination made by the droop control module; and generating, by the power conditioner, an output based on the droop control determination.