Abstract: A battery pack includes a plurality of secondary batteries having different discharge characteristics; at least one switch configured to switch a secondary battery connected to a load among the secondary batteries; and a controller configured to control the switch.

Abstract: A charger circuit for use in controlling charge of a battery pack, which includes a charge control switch and a control unit. The charger circuit has at least one power output terminal and one connection terminal for coupling the battery pack. The charge control switch is arranged to selectively provide a power from a power source to the battery pack through the power output terminal. The control unit is coupled to the charge control switch and the connection terminal, and determines whether to turn off the charge control switch according to a signal based on the connection terminal, wherein the signal based on the connection terminal indicates at least one of an over-voltage condition and an over-temperature condition.

Abstract: A vehicle comprises a motor configured to output a power for driving; a power storage device configured to supply electric power to the motor; a main relay provided between the motor and the power storage device; a power receiving connector configured to be connectable with a power feed connector of an external charger; and a charging relay connected with the power receiving connector and connected with the power storage device via the main relay. This vehicle further comprises a control device configured to determine whether electric power from the external charger is supplied to the power receiving connector during charging of the power storage device with the electric power from the external charger in closed positions of the main relay and the charging relay and to open the main relay when it is determined that the electric power from the external charger is not supplied to the power receiving connector.

Abstract: The present invention discloses a constant-current charging circuit, energy storage power source and constant-current charging method. The constant-current charging circuit includes a DC-DC converting circuit and a current-feedback circuit. A voltage output of the DC-DC converting circuit is a positive output of the constant-current charging circuit. A negative output of the DC-DC converting circuit is connected to a ground. The DC-DC converting circuit is connected to positive and negative terminals for a direct current voltage power supply. The current-feedback circuit includes first to third resistors and a reference voltage terminal. The reference voltage terminal is connected to the ground via the first to third resistors being connected in series. A connection point between the third resistor and the second resistor is a negative output of the constant-current charging circuit.

Abstract: A rechargeable battery pack system includes a charging base and rechargeable battery packs. The charging base includes an electrical connector for receiving electrical power and a set of electrical contacts. The rechargeable battery packs each include a rechargeable battery, electrical circuitry, and an inductive coil for wirelessly transmitting power to an electronic device. The rechargeable battery packs each include a first set of electrical contacts to electrically contact the charging base for receiving electrical power from the charging base when the battery pack is stacked on top. The rechargeable battery packs further include a second set of electrical contacts for providing electrical power to another rechargeable battery pack when the other rechargeable battery pack is stacked on top. The second set of electrical contacts is activated for providing the electrical power to the other rechargeable battery pack only after receiving a proper identity code from the other rechargeable battery.

Abstract: A pilot signal detection and indication unit includes a pilot signal scaling unit structured to generate a scaled pilot signal by shifting a pilot signal using a bias voltage and scaling down the pilot signal, a pilot signal duty cycle comparator unit structured to generate a limited pilot signal that has a fixed peak voltage and a duty cycle that is equivalent to the duty cycle of the pilot signal, a processing unit structured to determine a voltage value and the duty cycle value of the pilot signal from the scaled pilot signal and the limited pilot signal, and to generate an indication signal based on the determined voltage value and duty cycle value, and an indication unit having a number of indicators and being structured to activate selected ones of the number of indicators based on the indication signal.

Abstract: The present invention provides a method for controlling a charging voltage of a 12V auxiliary battery for a hybrid vehicle, which can (1) improve charging efficiency of an auxiliary battery by increasing the output voltage of a DC-DC converter during cold start when the outside air temperature is low, (2) improve the charging efficiency of the auxiliary battery by increasing or decreasing the output power of the DC-DC converter according to the state of charge of the auxiliary battery and by increasing the output voltage of the DC-DC converter when many electrical loads are turned on, and (3) allow the DC-DC converter to provide continuous power supply for charging the auxiliary battery by turning on a main switch disposed between a high voltage battery and the DC-DC converter based on a reverse power conversion operation of the DC-DC converter even in the case where the voltage of the auxiliary battery falls below 9V.

Abstract: An apparatus for charging a plurality of electric vehicles, wherein the apparatus has a charging module, wherein the charging module is operatively connected to a cooling component, wherein the cooling component is designed in such a way that, for the purpose of carrying away the waste heat from the charging module, a medium which carries along the waste heat is transported through a line which is routed in the ground.

Abstract: A rechargeable battery arrangement includes a plurality of rechargeable battery cells which are connected in series and each have a first and a second connection, and a plurality of differential amplifiers each having 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 one of the plurality of differential amplifiers is coupled to the second connection of a first rechargeable battery cell unit of the plurality of rechargeable battery cells and to the first connection of a second rechargeable battery cell unit of the plurality of rechargeable battery cells.

Abstract: Disclosed herein is an apparatus for controlling an electric vehicle charging system. The apparatus charges each of a plurality of batteries up to a first preset voltage lower than a full charge voltage by voltage control, charges the plurality of batteries up to a predetermined percentage of a second preset voltage that is the full charge voltage by current control, and charges the plurality of batteries up to the second preset voltage by the voltage control.

Abstract: The present invention discloses devices and methods for adaptive fast-charging of mobile devices. Methods include the steps of: firstly determining whether a first connected component is charged; upon firstly determining the first connected component isn't charged, secondly determining whether the first connected component is adapted for rapid charging; and upon secondly determining the first connected component is adapted for rapid charging, firstly charging the first connected component at a high charging rate via a charging device. Preferably, the charging device is selected from the group consisting of: a rapid charger and a slave battery. Preferably, the first connected component is selected from the group consisting of: a mobile device and a slave battery. Preferably, the high charging rate is selected from the group consisting of: greater than about 4 C, greater than about 5 C, greater than about 10 C, greater than about 20 C, greater than about 30 C, and greater than about 60 C.

Abstract: A method of charging one or more electric vehicles (EVs) includes receiving a voltage over a dedicated circuit from an electric power supply. A charging current is generated using the voltage and directed to a first output connection if a first EV is connected to a head that is connected to the first output connection. The charging current to the first one of the output connections is stopped, then directed to a second output connection if a second EV is connected to a head coupled to the second output connection.

Abstract: The present disclosure relates to battery cell balancing using duty ratio control, and more particularly, to a battery cell balancing method and system with improved accuracy and efficiency by detecting a temperature of a resistance caused by a current flowing in a battery cell during battery cell balancing, calculating a duty ratio of the battery cell balancing according thereto, and detecting a voltage of the battery cell when a predetermined time elapses after the cell balancing operation.

Abstract: A high power flash battery system includes a wayside flash battery and a half-bridge cell. The half-bridge cell has a voltage polarity opposite to that of the wayside flash battery. The half-bridge cell is configured to be in a voltage compensation mode when the system is unloaded, and to be switched to a bypass mode when a voltage drop occurs due to the system being loaded. A high power charging station, an onboard battery operated device, as well as a method for flash charging are also presented.

Abstract: A method, apparatus, and system for dynamic management of multiple device power consumption is disclosed. One or more battery-powered devices may be connected to a power supply for charging. The power supply itself may be another battery-powered device or a dedicated portable charger. The power supply may identify power consumption profiles of the connected devices and determine a power distribution ratio such that the timing of each device's battery depletion may be managed. For example, according to a power distribution profile, a power distribution ratio may be determined such that the projected battery depletion times of all the connected devices substantially coincide with each other. The power supply may distribute power to the connected battery-powered devices according to the determined power distribution ratio and the power distribution ratio may dynamically adapt to changing circumstances such as a device being disconnected, being fully charged, changing its power consumption rate, etc.

Abstract: A UPS with voltage-balancing state detection of batteries includes a processor, a voltage measurement module, a voltage control module, a battery pack and a display unit. Each of the voltage measurement module and the voltage control module is connected to the processor and the battery pack. The processor is connected to the display unit, generates a voltage index value according to voltage values measured by the voltage measurement module and a voltage-balancing state according to the voltage index value and a set of index ranges, controls charging to the battery pack according to the voltage values through the voltage control module, acquires an updated voltage-balancing state of the battery pack, and instructs the display unit to display the voltage-balancing state to prompt users for battery replacement when the voltage-balancing state and the updated voltage-balancing state acquired within a state-holding time are identical.

Abstract: The present disclosure relates to a battery test system for a vehicle that includes a camera configured to capture an image of a vehicle identification number located on the vehicle, the camera being coupled to a processor which determines characters of the vehicle identification number from the image of the camera and correlates the characters of the vehicle identification number to a vehicle identification number database to receive battery parameters for the vehicle, a battery tester that is removably connected to terminals of a battery of the vehicle and configured to receive battery test results, and a display which conveys information relating to the battery parameters and the battery test results.

Abstract: A power supply system that is mountable on a vehicle has a lead-acid storage battery connected to an electrical load, a lithium-ion storage battery having different charge and discharge characteristics form the lead-acid storage battery, and connected in parallel with the lead-acid storage battery with respect to the electrical load, a power generator configured to charge the lead-acid storage battery and the lithium-ion storage battery, and a controller configured to drive the power generator based on a relationship between a discharge current of the lead-acid storage battery and a discharge current of the lithium-ion storage battery.

Abstract: According to one embodiment, a wireless power transmission system includes: an AC power source; a power transmission resonator; a power reception resonator; an AC/DC converter; a first circuit disposed between the AC power source and the power transmission resonator; and a second circuit disposed between the power reception resonator and the AC/DC converter. Parameter values of passive elements in the first and second circuits are set so that an absolute value of an inverse transfer function between an input voltage and an output voltage of a target system at a frequency of the AC voltage is equal to or less than a divided value of the AC voltage by a battery voltage while the AC voltage is increased from a first voltage value to a second voltage value, the target system comprising the first circuit, the power transmission resonator, the power reception resonator, the second circuit and the AC/DC converter.

Abstract: A system for balancing a battery assembly and related methods for making and using same are provided. The system can obtain a status of a battery assembly with a plurality of batteries. One or more of the batteries can be selected based on the obtained status, and the selected batteries can be balanced. The system, for example, can control active balancing of the selected batteries when the battery assembly is in a static state and control selective discharging of the selected batteries when the battery assembly is in a discharging state. When the battery assembly is in a charging state, selective charging of the selected batteries can be controlled. One or more cells that comprise the individual batteries alternatively can be selected for balancing. A protective circuit can help ensure safety of the balancing. Battery balancing can be energy-efficient and time-efficient. The lifetime of the battery assembly can be extended.