摘要:
The invention refers to a control device (6) for controlling charging of a rechargeable battery (2). The control device is configured to: determine the state of charge (SOC b ) and the degradation (a b ) of the battery before starting charging, determine a target charging curve based on the determined state of charge (SOC b ) and degradation (a b ) of the battery, the target charging curve indicating the target capacity as a function of the target voltage of the battery during charging, charge the battery thereby monitoring the capacity and the voltage of the battery, determine the voltage deviation (Δ\/ x ) between the target voltage and the monitored voltage based on the target charging curve and the monitored capacity, and stop charging, when the determined voltage deviation (ΔV x ) exceeds a predetermined threshold (Δν T ). The invention also refers to a corresponding method of controlling charging of a rechargeable battery (2).
摘要:
The invention refers to a control device (6) for controlling charging of a rechargeable battery (2), the control device (6) comprising a rechargeable dummy cell (11), a first circuit (C1) configured to charge the battery and the dummy cell (11), and a second circuit (C2) configured to measure the open circuit voltage of the dummy cell (11). The control device is configured to: determine the open circuit voltage (OCV d ) of the dummy cell (11) by using the second circuit (C2), and determine the maximum capacity increment (ΔΑh max ) of the battery, which is to be charged until full charging, based on the determined open circuit voltage (OCV d ) of the dummy cell (11). The invention also refers to a corresponding method of controlling charging of a rechargeable battery (2).
摘要:
In described examples of a method and apparatus for fast charging a battery with optimal charging, a system (400) includes a battery charger (420) for applying a voltage to a rechargeable battery (430), and a controller coupled (422) to the battery charger (420) and monitoring at least one of a battery voltage, a battery temperature and the current flowing into the battery (430). The system (400) is configured to apply a charging current from the battery charger (420) by calculating an open cell anode voltage and an anode resistance of the battery (430), and determining the charging current. In additional arrangements, lithium ion plating is prevented by the charging current.
摘要:
A redundant power system (100) includes a first MOSFET (202) having a first gate (206), a first source (210), and a first drain (208). A second MOSFET (204) having a second gate (212), a second source (214), and a second drain (216). The first source is connected to the second source, and the second drain is coupled to a ground (218). A control circuit (102) connected to the first gate and the second gate and that provides control signals to the first gate and the second gate that cause the first and second MOSFETS to operate in saturation regions during a first operational state to cause a first power source (106) to discharge and the first MOSFET operates in a linear region during a second operational state to limit a charging current that charges the first power source.
摘要:
Systems and methods of pre-charging battery cells that can pre-charge battery cells included in a plurality of series-connected battery modules. The systems and methods monitor a value of a pre-charge current provided to the series-connected battery modules, and monitor a voltage level of the battery cells within each battery module. The systems and methods switchingly interrupt the pre-charge current within each battery module once it has reached a predetermined threshold current value or the battery cells within the battery module have been charged to a UVP level, causing a flyback current to flow into the battery cells of each battery module that have not yet been charged to the UVP level. Once the battery cells within each battery module have been charged to the UVP level, the systems and methods can provide a full-charge current to the series-connected battery modules.
摘要:
Method and charging station for charging rechargeable battery-operated device(s). The charging station comprises at least one receptacle for receiving at least one rechargeable battery-operated device to be charged, a payment module for processing a payment for allowing one or more of the at least one rechargeable battery-operated device to be charged for a period of time and a charging module for charging the one or more of the at least one rechargeable battery-operated device within the at least one receptacle, in accordance with the processed payment, the charging module receiving electrical power from a local power generator. The method comprises receiving the rechargeable battery-operated device for connection into the receptacle, processing a payment for allowing the rechargeable battery- operated device to be charged for a period of time and charging the rechargeable battery- operated device within the receptacle, in accordance with the processed payment.
摘要:
A battery charger and methods for magnetically transferring power from a power source to a battery is disclosed. A driver circuit outputs a modulated signal having a duty cycle from the power source to a sender-side circuit and across a space to a receiver-side tuned circuit. A sender-side sensor is configured to sense a parameter of the sender-side tuned circuit. The controller modifies the first duty cycle of the modulated signal based on the sensed parameter. A receiver-side circuit capable of determining charge status of the receiver side is also disclosed.
摘要:
According to one aspect, embodiments of the invention provide an uninterruptible power supply (UPS) system comprising an input configured to receive input AC power, an output configured to provide output AC power to a load, a DC power source coupled to a DC bus, an inverter having an input coupled to the DC bus and an output coupled to the output of the UPS system, the inverter configured to receive DC power at the input from the DC bus and provide AC power having a voltage to the output, and a controller coupled to the output of the inverter and configured to operate the inverter based on an average voltage of the AC power at the output of the inverter.