摘要:
A power system of a ship includes a first power storage device, a second power storage device, and a control system. The first power storage device has an energy density higher than that of the second power storage device. The second power storage device has a power density higher than that of the first power storage device. The control system is configured to: as a power generator application, prioritize discharging the first power storage device over discharging the second power storage device, such that base power is continuously supplied to an onboard electrical load connected to an onboard bus; and as a grid stabilization application, prioritize charging/discharging the second power storage device over charging/discharging the first power storage device to compensate for frequency variation or voltage variation of an onboard power grid.
摘要:
A battery module charging system according to the present invention includes: a power transmitting device (60) including a primary coil (6), the primary coil being configured to transmit AC power; a power receiving unit (70, 8) including a secondary coil (7), the secondary coil being configured to receive the AC power transmitted from the primary coil by electromagnetic induction, the power receiving unit being configured to convert the received AC power into DC power; a positioning mechanism (60a, 70a) configured to allow the power transmitting device to be detachably attached to the power receiving unit, and to position the primary coil and the secondary coil such that the primary coil and the secondary coil are allowed to be electromagnetically coupled to each other when the power transmitting device is attached to the power receiving unit; and a selection circuitry (21, 25, 29) configured to selectively charge a plurality of cells in a battery module (B) with the DC power, the plurality of cells in the battery module being connected in series to each other, the plurality of cells being secondary batteries.
摘要:
A battery module charging system according to the present invention includes: a power transmitting device (60) including a primary coil (6), the primary coil being configured to transmit AC power; a power receiving unit (70, 8) including a secondary coil (7), the secondary coil being configured to receive the AC power transmitted from the primary coil by electromagnetic induction, the power receiving unit being configured to convert the received AC power into DC power; a positioning mechanism (60a, 70a) configured to allow the power transmitting device to be detachably attached to the power receiving unit, and to position the primary coil and the secondary coil such that the primary coil and the secondary coil are allowed to be electromagnetically coupled to each other when the power transmitting device is attached to the power receiving unit; and a selection circuitry (21, 25, 29) configured to selectively charge a plurality of cells in a battery module (B) with the DC power, the plurality of cells in the battery module being connected in series to each other, the plurality of cells being secondary batteries.
摘要:
In a power storage system including a secondary battery (1) and a capacitor (2), a bidirectional DC-DC converter is set into mode for charging the secondary battery (1) with electricity when a first state of charge (SOC) of the secondary battery (1) is larger than a minimum value of the first SOC, and a second SOC of the capacitor (2) is smaller than a maximum value of the second SOC, and the bidirectional DC-DC converter is set into mode for discharging electricity from the secondary battery (1) when the first SOC is smaller than a maximum value of the first SOC, and the second SOC is larger than a minimum value of the second SOC. On the basis of an internal resistance of the secondary battery (1), the second SOC, a voltage of a direct current link which are obtained when a load is not connected to the direct current link, and a bidirectional DC-DC converter error in a current on a direct current link side, a conduction ratio (D) of the bidirectional DC-DC converter is calculated to control the bidirectional DC-DC converter, so as to control a temperature by means of a change of the internal resistance.
摘要:
An electric power storage apparatus (1) comprises a first electric storage device (10); and a second electric storage device (20), the first electric storage device has an inner resistance lower than an inner resistance of the second electric storage device, and has a power density higher than a power density of the second electric storage device, and the second electric storage device has an energy density higher than an energy density of the first electric storage device, the first electric storage device and the second electric storage device are connected in parallel, and a voltage window of the first electric storage device and a voltage window of the second electric storage device at least partially overlap with each other.