A portable information handling system battery module has a self-contained housing having a battery charger, integrated rechargeable batteries and plural ports to transfer power, such as USB Type C ports having bi-directional power transfer capability. A cable couples first battery module port to a portable information handling system port to provide power to the portable information handling system and accept power from the portable information handling system. Plural additional battery modules daisy chain to the first battery module to accept power from and provide power to the portable information handling system. Power transfer is coordinated with communications through the ports, such as by a USB power transfer protocol supported at the information handling system and each battery module.

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.

System for balancing series of cells, including circuits each having three or four cells, including: one or two central cells and additional neighboring cells in each circuit, each neighboring cell being adjacent to one central cells; a local capacitor for each neighboring cell, within a local section of each circuit; one global capacitor at a global section which is common to all the circuits; a plurality of controlled switches; a controller which periodically, repeatedly, and alternately opens and closes some switches to: within each circuit, connect each local capacitor in parallel to a respective neighboring cell; within each circuit, connect each local capacitor in parallel to the central cell if one central cell exists, or to another central cell if two central cells exist, respectively; within each circuit, connect said central cells of all circuits separately or simultaneously to said global capacitor.

A device for balancing load of a storage device including plural elements connected in series. The device includes: a DC/AC converter including an inverter and a series resonant circuit connected to the output of the inverter; plural AC/DC converters, each including an input and an output that is connected to one of the respective storage elements and selectively supplies power to the output thereof; a transformer, the main winding of which is connected to the series resonant circuit and the secondary winding of which has outputs connected to an input of a respective AC/DC converter; and a control circuit configured to control the DC/AC converter at the current source when a number of outputs supplied with power is no higher than a threshold and moreover configured to control the DC/AC converter at a constant power when the number of outputs supplied with power is greater than the threshold.

A battery system for an electric vehicle is disclosed having a first battery connectable to a first electric drive; a second, redundant battery, connectable to a second, redundant electric drive; and an electronic power switch having a first input terminal, a second input terminal, and an output terminal, the first input terminal being electrically connected to the first battery, the second input terminal being electrically connected to the second battery, and the output terminal being electrically connectable to an electrical accessory, the electronic power switch being configured to selectively and electrically connect the output terminal to the first input terminal or the second input terminal to provide electrical power from the first battery or the second battery to the electrical accessory.

Methods, systems, and computer program products for battery pack management are provided. Aspects include receiving battery pack data for two or more battery packs, the two or more battery packs comprising a first battery pack and a second battery pack, determining a target performance characteristic for the first battery pack and the second battery pack, determining a first hold up time for the first battery pack and a second hold up time for the second battery pack based at least in part on the battery pack data, determining, based on the target performance characteristic, a target hold up time from the first hold up time and the second hold up time, and determining, based on the battery pack data, a first voltage for the first battery pack and a second voltage for the second battery pack that satisfies the target hold up time.

An arrangement includes: a direct current power network with a plus pole and a minus pole; two series capacitors, a first outer tap being connected to the plus pole via a first power line, a second outer tap being connected to the minus pole via a second power line and a middle tap is connected to ground; a circuit switch arranged in at least one of the first and the second power line; a circuit switch control unit for opening the circuit switch upon overcurrent and/or upon manual intervention; a switchable high ohmic path in at least one of the first and the second power line, which bypasses a) a switchable low ohmic path in the least one of the first and the second power line or b) the circuit switch; and a load control unit for measuring a total voltage of the two series capacitors.

A system for balancing ultracapacitors is provided. The system includes a balancing capacitor and a plurality of switching devices. The system further includes a control circuit. The control circuit is communicatively coupled to each of the plurality of switching devices. The control circuit is configured to control operation of a first pair of the switching devices to couple the balancing capacitor across a first ultracapacitor of a plurality of ultracapacitors to transfer electrical charge from the first ultracapacitor to the balancing capacitor. The control circuit is further configured to control operation of a second pair of the switching devices that is different than the first pair to couple the balancing capacitor across a second ultracapacitor of the plurality of ultracapacitors to transfer at least a portion of the electrical charge from the balancing capacitor to the second ultracapacitor.

An apparatus and a system for balancing energy in a battery pack are provided, to implement balanced energy distribution among individual batteries in a battery pack. The apparatus includes: a transmitting coil, configured to transmit an electromagnetic wave generated by an input first alternating current to multiple receiving coils; the multiple receiving coils, where parameter values of all receiving coils of the multiple receiving coils are the same, all the receiving coils are coupled to the transmitting coil at a same coupling strength, and each receiving coil is configured to receive the electromagnetic wave transmitted by the transmitting coil, and generate and output a second alternating current according to the electromagnetic wave.

The present disclosure discloses a flow battery system and a large-scale flow battery energy storage device. The flow battery system comprises multiple flow batteries; each of the flow batteries comprises a battery pack A, a battery pack B, a battery pack C, and a set of electrolyte circulation system used by the battery pack A, the battery pack B and the battery pack C; the battery pack A, the battery pack B and the battery pack C comprised in each flow battery are independent of each other in the circuit. According to the present disclosure, at least two sets of electrolyte circulation system are saved under the same power scale, such that the system stability is improved while the cost is reduced.