A computer implemented method for managing charge availability of a charge unit (CU) to obtain charge for a battery of an electric vehicle (EV) is provided. The CU includes a computer for processing at least part of the method and for communicating with a server over a network. The method includes receiving, by the server, status information from the computer of the CU. The method includes sending to the computer of the CU instructions to make a reservation for the CU. The reservation is for a user account that has requested a desire to charge the battery of the electric vehicle of the user at the CU or another CU. The method includes sending, by the server, a confirmation for the reservation to the user account. The confirmation is viewable via a device having access to the server via the user account. The method includes sending, by the server, a data regarding a time of availability of the CU to the user account for the reservation. The computer of the CU is configured to display a visual indicator regarding the reservation of the CU.

A vehicle includes a vehicle battery; a vehicle sensor configured to detect a current, a voltage and a temperature of the vehicle battery; and an alternator configured to output a target voltage to the vehicle battery. A controller is configured to calculate state of charge (SOC) estimation based on the current, voltage and temperature of the vehicle battery, calculate an initial SOC based on a direct current internal resistance (DCIR) map and apply the initial SOC to the SOC estimation, when an open circuit voltage (OCV) is maintained in a predetermined range after engine-off, and adjust an available SOC range based on a difference between an actual battery charge current amount, to which the initial SOC is applied, and the calculated SOC estimation.

A battery unit for a favor inhaler includes a chargeable and dischargeable power supply, a connection part capable of electrically connecting to an external charger, and a controller configured to perform control regarding at least the power supply, wherein when an accumulated value of a connection time period to the charger exceeds a first predetermined time period, the controller determines that the power supply has been degraded.

The electronics comprises a load circuit, a power supply circuit having a rechargeable electrical energy storer, and a protection circuit. An input of the power supply circuit is adapted to be electrically connected with an external energy supply. Both the power supply circuit and the protection circuit have at least two operating modes. Additionally, the protection circuit is adapted in the first operating mode to monitor the cell voltage applied on the circuit input to determine whether its voltage level has exceeded a predetermined maximum value and, in given cases, automatically to deactivate the operating mode.

The invention relates to an energy storage comprising a plurality of series connectable energy modules connected to a string via a plurality of switches. Wherein a string controller controls which of the energy modules that are part of a current path through the string by control of the status of the switches. An energy storage monitoring system is monitoring an energy storage element operating parameter of an energy module, the energy storage monitoring system comprises: a current sensor and a plurality of energy module print. The plurality of energy module prints establishes an energy module operating parameter of the associated energy module. The current sensor establishes the current in the current path. The string controller is configured for by-passing an energy module based on information of status of the switches, the measured current in the current path and the battery operating parameter measured at the energy modules.

An arrangement for powering a mobile device with a fast charge discharge power source such as a supercapacitor without reliance on resistors to protect device electronics from comparatively high supercapacitor current discharge rates. The arrangement protects device electronics by coordinating a switch with a charge controller to balance recharge of a battery electronically coupled to the supercapacitor. The arrangement and techniques utilized result in a substantially continuous trickle charging of the battery from the supercapacitor. In this way, the battery is continuously charged so long as the supercapacitor holds power and the battery remains the safe medium through which device electronics are powered.

An uninterruptible power supply device (UPS) for feeding a load device when power supply thereto is shut down. The UPS has battery packs, a charge and discharge circuit configured to charge and discharge the battery packs, a regulating discharge circuit including a resistance, and a control unit. When the battery pack is charged to a dischargeable upper limit voltage of the load device, the control device shifts the battery pack to a discharge inhibition condition. In the discharge inhibition condition, the battery pack is continuously charged to full capacity and prevented from being discharged to the load device. When the battery voltage is reduce to the upper limit voltage after being fully charged, the control unit allows the battery pack to discharge the load device.

A system and method for charging battery packs is provided. The system may include a charging pad comprising a power supply, a charging pad surface, and a microcontroller unit. The power supply may provide charging power. The charging pad surface may include a first charging region and a second charging region. The microcontroller unit may control delivery of charging power to the first charging region and the second charging region such that a device placed in contact with the first charging region is given a higher charging priority than a device placed in contact with the second charging region.

Provided is non-contact power transmission/reception technique which is easy to be used while ensuring consideration for safety. A non-contact power transmission device 100 that wirelessly transfers generated transmission power to a non-contact power reception device 200 comprises a transmission power generation unit 120 configured to perform generation of the transmission power and a control unit 117 configured to control the generation of the transmission power. The control unit 117 is further configured to control the generation of the transmission power which is performed by the transmission power generation unit 120 in accordance with a surrounding environment in which at least one of the non-contact power transmission device 100 and the non-contact power reception device 200, or at least one of states of these devices.

A system and method for managing and controlling the charging and discharging of dual batteries in a vehicle, wherein the auxiliary battery is a lithium-ion battery, and the primary battery can be of any type. The system includes a charging circuitry for charging the lithium-ion batteries using power from the power supply of the vehicle. The system further includes a controller that prioritizes the charging of the primary battery. The controller allows simultaneous charging of the primary battery and the secondary battery when the charging status of the primary between is about 13.5 Volts and prevents charging of the secondary battery when the voltage source is below 13.2 Volts.