A system for controlling a plurality of batteries is introduced. The system may comprise a first battery controller circuit configured to obtain first state information of a first battery and control the first battery based on the first state information. A second battery controller circuit may be configured to obtain second state information of a second battery and control the second battery based on the second state information, wherein the second battery is coupled in parallel to the first battery. A battery integrated controller circuit may be configured to control the first battery controller circuit and the second battery controller circuit based on aggregated state information of the first state information and the second state information.

The present disclosure provides a guitar case system comprising a clear vinyl guitar case, a plurality of solar fuel cells integrated into the exterior of the guitar case, a charging station connected to the solar fuel cells, and a plurality of storage compartments integrated into the guitar case. The charging station is configured to charge electronic devices stored in the compartments. The system enables musicians to efficiently organize and power their equipment while traveling, reducing reliance on external power sources and improving overall performance capabilities.

Example methods to manage a plurality of battery packs of an electric vehicle include initiating a charging process for a primary battery pack and an auxiliary battery pack, determining that an Open Circuit Voltage (OCV) of the primary battery pack matches an OCV of the auxiliary battery pack, and based on determining that the OCV of the primary battery pack matches the OCV of the auxiliary battery, connecting the primary and auxiliary battery packs in parallel and initiating parallel charging of the primary battery pack and the auxiliary battery pack.

A computer program product is provided according to some embodiments. The computer program product includes a non-transitory computer-readable storage medium storing a set of instructions, which, when executed by a computing device, causes the computing device to: (a) determine a discharge rate for a battery at a remote location based on a profile of the battery and a temperature value; (b) receive, at an initial time, a notification of the battery ceasing to be in communication with the computing system; (c) in response to receiving the notification, estimate an amount of time remaining until the battery self-discharges to a lower threshold state of charge (SoC); and (d) in response to elapsed time since the initial time reaching the estimated amount of time, output a signal from the computing system indicating a battery-discharge condition. A corresponding method, apparatus, and system are also provided.

In management device, voltage measurement circuit measures a voltage of each of a plurality of cells connected in series. A plurality of voltage measurement lines connect between respective nodes of the plurality of cells and respective voltage measurement terminals of voltage measurement circuit. A lower reference potential line connects between a lower node of lowermost cell of the plurality of cells and a lower reference terminal of voltage measurement circuit. Voltage dividing resistor is connected between a predetermined fixed potential and lowermost voltage measurement line. Controlling circuit monitors the voltage between a voltage dividing point potential of voltage dividing resistor and a lower reference potential of voltage measurement circuit, and diagnoses presence or absence of disconnection of lowermost voltage measurement line or the lower reference potential line.

A battery control apparatus according to the present disclosure includes a plurality of switching circuits connected in series to a plurality of battery packs; a plurality of sensing circuits to generate a sensing signal indicating a voltage and a current of each battery pack; and a control circuit to determine the voltage, a state of health (SOH) and a state of charge (SOC) of each battery pack. According to an embodiment of the present disclosure, in the selective parallel connection control for at least one of the plurality of batteries, it is possible to reduce a difference in SOH between the plurality of batteries.

A battery housing unit including a lid, a base, and a plurality of electrochemical battery cells. The lid includes at least two channels for receiving at least one post from a military radio. The base includes a locking latch configured to attach to a corresponding catch of a military radio.

A device includes an AC impedance circuit to apply an AC excitation signal to a set of battery cells of a battery pack. The device includes a controller to determine a battery pack identification (ID) value from a battery pack identification (ID) circuit of the battery pack, calculate an impedance value of the battery pack based on the AC excitation signal, identify a maximum charging rate to charge the battery pack using the battery pack ID value of the battery pack and the impedance value of the battery pack, where the battery pack is one of at least two battery packs having a same battery pack ID value with different maximum charging rates, and set a charging rate to charge the battery pack using the maximum charging rate.

An energy storage system is provided as a demand response resource which is associated with a virtual power plant (VPP) system. The energy storage system can include a power generation device for producing electric power, a battery for storing power, an energy management apparatus for monitoring a power generation state and a power consumption state and to establish an operation schedule for the battery, and a power converter for controlling charging/discharging operation of the battery according to the established operation schedule.

A reconfigurable battery system is disclosed. The reconfigurable battery system comprises a reconfigurable battery cell array, a controller, and a bus switch. The battery cell array is configured to operate in a first discharge mode, a second discharge mode, or a charge mode. The battery cell array includes a plurality of battery cells arranged as at least a first column of battery cells between a second battery terminal and a first battery terminal and a switch between each battery cell within the first column of battery cells. The bus switch is in signal communication with the battery cell array at the first battery terminal and is configured to select between electrically connecting the first battery terminal to a normal voltage bus or a high-voltage bus.