摘要:
An electric storage device including a state detection unit managing and controlling the state of a battery unit, wherein the state detection unit captures an inter-terminal voltage of each of a plurality of batteries measured by a battery management unit in a no-load state where the battery unit is separated from a load, and calculates variation information about the states of charge of the batteries. In addition, the state detection unit, taking into consideration the variation information about the states of charge of the batteries, calculates allowable charge and discharge information required for controlling the charging and discharging of the battery unit in a loaded state where the battery unit is connected to a load and charged or discharged, and outputs the allowable charge and discharge information to a charge and discharge device in the battery unit.
摘要:
A method for diagnosing a battery may include applying a generally constant current to the battery for a period of time, measuring a response voltage of the battery to the applied current, determining battery impedance parameters based on at least one of the applied current, period of time, and response voltage, and determining a degradation condition of the battery based on the battery impedance parameters.
摘要:
A method for charging a plug-in electric vehicle with an external power source. In an exemplary embodiment, the method receives one or more utility rate preferences from a user, determines the utility rates of a local utility company, determines the total charging time needed to charge the plug-in electric vehicle, uses the utility rate preferences, the utility rates and the total charging time to develop several charging options that are presented to a user, and charges the plug-in electric vehicle according to the charging option selection made by the user.
摘要:
A power source comprised of a metal-air battery pack and a non-metal-air battery pack is provided, wherein thermal energy from the metal-air battery pack is used to heat the non-metal-air battery pack. In one aspect, a thermal energy transfer system is provided that controls the flow of thermal energy from the metal-air battery pack to the non-metal-air battery pack. In another aspect, the flow of thermal energy from the metal-air battery pack to the non-metal-air battery pack is controlled and used to heat the non-metal-air battery pack prior to charging the non-metal-air battery pack.
摘要:
A battery management system and a driving method thereof. The battery management system manages a plurality of battery cells, and a plurality of cell relays respectively coupled to the plurality of cells. The battery management system includes a voltage detecting unit and an MCU. The voltage detecting unit receives a first voltage corresponding to an input voltage transmitted through a 3-contact relay coupled to a first cell corresponding to the turn-on first cell relay when the first cell relay is turned on, and generating a second voltage corresponding to the first voltage. The MCU calculates an effective gain in correspondence with a ratio of the second voltage to the input voltage and controls a connection of the 3-contact relay.
摘要:
A method for predicting change in an operating state, e.g. state of life, for an electrical energy storage device includes establishing a plurality of values for an operating parameter, e.g. current, of the electrical energy storage device and, for each respective value, determining a corresponding change in the operating state for the energy storage device based upon the respective value. Preferably, change in the state of life is determined based upon an integration of electrical current, a depth of discharge of the energy storage device, and an operating temperature factor of the electrical energy storage device.
摘要:
In a secondary battery output deterioration calculating apparatus that calculates a battery output deterioration in conformance to the output ratio of the battery output ascertained as a secondary battery becomes depleted and an initial battery output, the extent of depletion of the secondary battery is calculated through an arithmetic operation by calculating an output ratio based upon the open circuit voltage of the secondary battery and the voltage manifesting while the secondary battery is charged with a constant current.
摘要:
A power supply unit comprises a solid electrolyte battery constituted by using a solid electrolyte alone and a liquid electrolyte battery constituted by using an electrolytic solution connected in parallel to each other. Since the solid electrolyte battery is primarily utilized at high temperature and the liquid electrolyte battery is primarily utilized at low temperature, a power supply unit can achieve durability characteristics at high temperature equivalent to those of a power supply unit constituted of solid batteries alone and output characteristics at low temperatures equivalent to those of liquid electrolyte batteries alone, is provided.
摘要:
For charging a secondary battery, at least two operation modes including first and second operation modes, in which the secondary battery is charged to predetermined charge end voltages different from each other, are established. Both life and capacity of the battery can be maximized by a user selecting either of the two operation modes, or switching between the two operation modes automatically with a timer device, or according to a temperature of the battery, state of health thereof, or internal pressure thereof.
摘要:
A power control system (10) for managing power output from a battery (11) includes an output terminal (12) for delivering power from the battery (11) to a load, control means (14) connected to the battery (11) to sense pre-selected operating parameters of the battery (11), and in a first mode of operation to provide power from the battery (11) to the output terminals (12). A first capacitor (15), which stores a predetermined quantity of power is connected between the control means (14) and the battery (11), supplies its stored power to the battery (11) in response to a signal from the control means (14) which is in a second mode of operation. A second capacitor (16), which stores a predetermined quantity of power and is connected between control means (14) and the output terminals (12), supplies its stored power to the output terminals (12) in response to a signal from the control means (14) in its second mode of operation.