Abstract: A charging system for a battery powered vehicle may include a memory configured to maintain customer accounts, and a processor configured to receive requests from a first customer at a charging station for an increased rate of charge, transmit the request to at least one other customer at the charging station in response to verification of the customer account associated with the first customer; and instruct the charging station to increase the rate of charge for the first customer and decrease the rate of charge for the at least one other customer in response to the at least one other customer accepting the request.

Abstract: A rechargeable battery for powering a vacuum cleaner includes a casing, a latch for securing the rechargeable battery in the vacuum cleaner, an electrical connection interface, and a battery core disposed within the casing. The casing includes a cover plate, a sidewall extending from the cover plate, and first and second rails that extend longitudinally along the cover plate. Each rail is L-shaped and includes ribs for support. The latch is selectively releasable, and the electrical connection interface is disposed between the first and second rails.

Abstract: An adaptive electric vehicle supply equipment (EVSE) unit provides intelligent control to vary the EVSE load placed upon the local electric connection based upon real time load measurements of both the overall premises load and the specific capacities and requirements of the EVSE. The EVSE unit includes a current power transformer at the main service entry point to capture real time power level at the meter. Additional real time current measurements are available within unit to measure the real time output power on the AC legs going to a vehicle. The unit is configured to a controller module which measure and controls the pilot signal output based on a comparison of the power level at the meter with the power level at the EVSE unit against the desired or required power output to the vehicle.

Abstract: The invention provides a voltage balancing system for balancing controlling of voltage of battery cells including a first set of battery cells and a second set of battery cells connected in series. The system includes a high-side analog front end (AFE) connected to the first set of battery cells, a low-side analog front end (AFE) connected to the second set of battery cells, a microcontroller communicating with the high-side AFE and the low-side AFE, and a communication isolating module interconnecting between the high-side AFE and the microcontroller. The system further includes a balancing module arranged at a back end of the low-side AFE or the high-side AFE to equalize voltages output by the low-side AFE and the high-side AFE. Compared with the prior arts, the system employs a balancing module to balance the voltages of the two sets of battery cells, which can shorten the voltage difference therebetween.

Abstract: To improve reliability in balancing while suppressing power consumption during balancing. A battery management device 1 includes cell cons 41 and 42 that perform balancing for adjusting voltages of a plurality of battery cells 2 that are secondary batteries, and a control unit 3 that controls the cell cons 41 and 42. The cell con 41 includes the main timer 412 that measures the elapsed time for stopping the cell con 41, and the stop management unit 413 that stops the cell con 41 when the main timer 412 is abnormal. In the battery management device 1, the battery cell 2 that supplies power to the main timer 412 and the stop management unit 413, and the lead storage battery 7 that supplies power to the control unit 3 are power supplies different from each other.

Abstract: Methods and systems for precision charging control of an untethered vehicle include at least a wireless charging antenna carried by a vehicle and in electrical communication with a vehicle propulsion system. A plurality of wireless charging antennae is positioned on or within a roadway and are in communication with at least a roadway control system and a power source. An authentication connection is established between the vehicle wireless charging antenna and the roadway control system. A dynamic seek operation is triggered between the first wireless charging antenna and the one of the plurality of second wireless charging antennae to pair the first wireless charging antenna with the one of the plurality of second wireless charging antennae. A quantity of electrical energy is transferred between the first wireless charging antenna and the one of the plurality of second wireless charging antennae.

Abstract: An energy storage system includes a DC bus; a plurality of battery strings, each battery string comprising batteries coupled electrically together; a plurality of DC/DC converters electrically coupling respective battery strings to the DC bus; an enclosure housing the battery strings and the DC/DC converters; and a temperature control system. The temperature control system includes at least one heating, ventilation, and air conditioning (HVAC) system, and a controller.

Abstract: The disclosure is directed to methods and systems for a battery configured to store a first energy in a chemical form of the battery at a battery voltage level; an electrical load configured to draw an electrical current from the battery in response to an energy requirement of the electrical load, wherein the battery voltage level is configured to decrease in response to the electrical current being drawn from the battery by the electrical load; and a capacitor module in electrical communication with the battery and configured to store a second energy as an electric field of the capacitor module at a capacitor voltage level.

Abstract: An electronic apparatus includes: a display; a processor configured to, when a battery of the electronic apparatus is to be charged, obtain a display state of the display and generate a mode-selection signal according to the display state; and a battery management circuit connected to the processor and configured to, upon receiving the mode-selection signal, switch to one of a charge pump charging mode or a direct charging mode based on the mode-selection signal to charge the battery.

Abstract: A charger includes a rectifier including two input terminals for connection to an AC power supply, a cathode terminal and an anode terminal, a DC/DC converter including a first terminal be connected to the cathode terminal, a second terminal to be connected to the anode terminal, and two output terminals for connection to a battery, a power pulsation absorbing circuit including a first diode, a second diode, a third diode, an inductor, a capacitor, a first switch and a second switch, and a control section configured to control a switch of the DC/DC converter, the first switch and the second switch, wherein the control section is configured to control the DC/DC converter, the first switch and the second switch in such a way that a sum of a power outputted from the AC power supply and a power outputted from the capacitor is constant.

Abstract: A charging control device including: a first and second electrode supply path; a voltage measurement circuit configured to measure a voltage between the first and second electrode side supply paths; a first and second electrode side relays on the first and second electrode side supply paths which are located closer to the battery than the voltage measurement circuit; a series circuit of a resistor and a resistance regulation relay, the series circuit being connected in parallel to the voltage measurement circuit; and a controller configured to control opening and closing the first electrode side relay, the second electrode side relay and the resistance regulation relay, wherein the controller is configured to control the resistance regulation relay to be closed when performing welding determination of the first electrode side relay and/or the second electrode side relay.

Abstract: A DC charging circuit for an electric vehicle includes a neutral-point clamped (NPC) rectifier and a DC/DC buck converter. The NPC rectifier is configured to convert three-phase AC power to a first DC voltage at a rectifier output stage. The DC/DC buck converter includes a first DC stage coupled to the rectifier output stage, and a second DC stage configured to be coupled to the electric vehicle. The DC/DC buck converter is configured to convert the first DC voltage to a second DC voltage to be supplied to the electric vehicle.

Abstract: A vehicle includes a power interface configured to perform at least one of power transmission to and power reception from an external apparatus, a power accumulation device, a power line that constitutes at least a part of a current path between the power interface and the power accumulation device, and a control device configured to control charging and discharging of the power accumulation device using a plurality of profiles for protecting the power line. The profiles are determined such that the degrees of reduction of the magnitude of a current that flows through the power line and the energization time become larger as the ambient temperature of the power line becomes higher. The profiles include a first profile and a second profile that has a larger degree of reduction than that of the first profile.

Abstract: Disclosed is a vehicle including a battery, and a controller configured to check identification information of a charger when the charger and the battery are connected, determine whether a charging interruption history exists in the charger based on the identification information of the charger, determine whether or not a user consents to perform recharging of the battery with a first current value in a case where the charging interruption history exists, and perform the recharging of the battery with the first current value depending on the consent of the user or not.

Abstract: A power control system is provided for AC mains, including an input bridge rectifier connected to the AC power mains, and a buck regulator circuit connected to the DC output of the input bridge rectifier, the output of the buck regulator circuit providing a DC power output bus. A current sensor is connected to the output of the buck regulator circuit, and one or more capacitors is connected across the DC power output bus for receiving current from the buck regulator circuit. The buck regulator circuit is controlled to limit peak output current thereof.

Abstract: Techniques for estimating a vehicle state of charge (“SoC”) are disclosed. A computing device may determine a first instance of connectivity between the computing device and an electric vehicle and determine a first location of the computing device associated with the first instance of connectivity. The computing device may detect completion of a first trip of the electric vehicle, wherein the first trip reflects movement of the electric vehicle from the first location to a second location, and determine a first distance traveled by the electric vehicle during the first trip based on the first location and the second location. The computing device may select the electric vehicle for charging using the determined first instance of connectivity between the computing device and the electric vehicle, estimate a SoC of the selected electric vehicle using the determined first distance, and transmit the estimated SoC to a charging station.

Abstract: Embodiments disclosed herein may generate and transmit power waves that, as result of their physical waveform characteristics (e.g., frequency, amplitude, phase, gain, direction), converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pockets of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pockets of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy.

Abstract: A method for charging a storage device, such as a capacitor or a supercapacitor, with energy from an energy harvester and using a voltage converter having a coldstart voltage convertor and a main voltage converter is provided. After charging a buffer capacitor with the coldstart voltage converter up to the first voltage V1, the method repetitively performs steps of a) charging the buffer capacitor with the main voltage converter up to a voltage V2>V1, followed by transferring charges from the buffer capacitor to the storage device, b) stopping transferring charges to the storage device when the voltage of the buffer capacitor is below a third voltage value V3, with V1<V3<V2. The steps a) to b) are repeated until the storage device has reached a storage reference voltage value Vst-ref with V1<Vst-ref<V3. A power management integrated circuit for charging a storage device according to the method is provided.

Abstract: A rechargeable battery assembly has a first battery unit with a first terminal and a second terminal; a second battery unit which is serially connected to the first battery unit and which has a first terminal and a second terminal; and a differential amplifier with an inverting input, a non-inverting input, and an output at which an amplified difference between the signal at the inverting input and the signal at the non-inverting input is produced. The non-inverting input of the differential amplifier is connected to the second terminal of the first battery unit and to the first terminal of the second battery unit. The inverting input of the differential amplifier is coupled to the first terminal of the first battery unit and to the second terminal of the second battery unit. The output of the differential amplifier is connected to the second terminal of the second battery unit.

Abstract: A system for matching a plurality of electrically powered vehicles to a plurality of available mobile chargers includes a computerized server device programmed to monitor optimization inputs related to the plurality of available mobile chargers, monitor optimization inputs related to the plurality of electrically powered vehicles operated by a plurality of customers, determine a lowest-cost-based ranked listing of matched charger and vehicle pairings for each of the plurality of customers based upon the optimization inputs related to the plurality of available chargers and the optimization inputs related to the plurality of the electrically powered vehicles, present the ranked listing of matched charger and vehicle pairings to each of the customers, monitor selection by each of the plurality of customers of a desired charger for the customer from the ranked listing, and direct each of the plurality of customers to the desired charger for the customer.