摘要:
The present teaching provides a power supply system capable of fully utilizing a plurality of batteries (30) having different performances. A power supply system disclosed here includes a main line (9), a plurality of sweep modules (20), and a controller (11). Each of the sweep modules includes a battery module (30) and an electric power circuit module (40). The electric power circuit module includes a switching device (41) for connecting a connection state between the battery modules and the main line between connection and disconnection. The controller performs sweep control of sequentially switching the battery module connected to the main line among the plurality of battery modules. During an input of electric power from outside, the controller disconnects the battery module whose SOC level satisfies a high SOC condition from the main line, and continues sweep control.
摘要:
A power supply (2) of a vehicle (1) includes a first switching element (S1), a second switching element (S2), a third switching element (S3), a first battery (B1), a reactor element (R), a second battery (B2), a smoothing capacitor (C H ), and a controller (22). When the connection state of the first battery and the second battery is switched from the series connection state to the parallel connection state, the controller is configured to perform a transition control so that a voltage of the smoothing capacitor is decreased to the higher of a voltage of the first battery and a voltage of the second battery, and perform a switching control to turn on the first switching element after a diode of the first switching element is energized.
摘要:
A power source system includes a first battery string, a second battery string, and a third battery string. Each of the battery strings includes a plurality of batteries capable of outputting direct-current power. The battery strings are Y-connected so as to output three-phase alternating-current power to three-phase output terminals (alternating-current output terminals) as well as connected to a neutral line. On the neutral line, a neutral line capacitor for blocking a direct current, a neutral line switch disposed in series to the neutral line capacitor, and an electric resistance element disposed in parallel to the neutral line switch are provided.
摘要:
The present teaching provides a technique for detecting a failure in a switching device early in a power supply system including a plurality of sweep modules. A power supply system 1 disclosed here is connected to an electric power system through a distribution device. The power supply system includes a plurality of strings connected to the distribution device and a failure detector. The failure detector of the power supply system is configured to perform a first process of connecting at least one battery module to a main line to set a voltage detected by a string voltage detector at a voltage higher than a predetermined voltage in a state where a switch disconnects the distribution device and the main line, a second process of sending a disconnecting signal for disconnecting all the sweep modules from the main line, and a third process of determining whether the voltage detected by the string voltage detector is lower than the predetermined determination voltage or not after the second process.
摘要:
A power supply system includes a controller (104), and a plurality of battery modules (102). The battery modules (102) are connected in series, according to a gate drive signal from the controller (104), to provide series connection, and each of the battery modules (102) has a disconnecting device (22) configured to force the battery module to be disconnected from the series connection. The controller (104) is configured to estimate the internal resistance of the battery module disconnected from the series connection by the disconnecting device (22), from a module voltage of the battery module before the battery module is disconnected from the series connection, a module voltage immediately after the battery module is disconnected, and a module current delivered from the battery module.
摘要:
A core has first to third magnetic leg portions. First and second windings wound on the first and second magnetic leg portions, respectively, are connected in series to constitute a first reactor. A third winding wound on the third magnetic leg portion constitutes a second reactor. A magnetic field produced from the first reactor and a magnetic field produced from the second reactor reinforce each other in the second magnetic leg portion, but weaken each other in the first magnetic leg portion. In accordance with increase in currents, the operation of the first and second reactors changes from a magnetically uncoupled mode in which the first and second reactors operate in a magnetically non-interfering state to a magnetically coupled mode in which the first and second reactors operate in a magnetically interfering state.
摘要:
Provided is a power supply device (100) which includes a plurality of battery modules (102) and in which the battery modules (102) are connected in series with one another in accordance with a gate driving signal from a controller (104). The power supply device (100) includes a disconnecting part (22) configured to forcibly isolate the battery module (102) from a series connection regardless of the gate driving signal, and limits, in accordance with a target output voltage value, a number (Npass) of the battery modules (102) to be forcibly isolated by the disconnecting part (22).
摘要:
A power source system (5) includes a direct current power source (10), a direct current power source (20), and a power converter (50) having a plurality of switching elements (S1-S4) and reactors (L1, L2). The power converter (50) performs a direct current voltage conversion between the direct current power sources (10, 20) and a power source line (PL) in parallel by controlling the switching elements (S1-S4). Each of the switching elements (S1-S4) is disposed to be included in both a power conversion path formed between the direct current power source (10) and the power source line (PL), and a power conversion path formed between the direct current power source (20) and the power source line (PL). A phase difference ( Æ ) between a carrier signal used for a pulse width modulation control to perform the direct current voltage conversion for the direct current power source (10), and a carrier signal used for a pulse width modulation control to perform the direct current voltage conversion for the direct current power source (20) is controlled according to the operation condition of the power converter (50).
摘要:
A power source system (5) includes a direct current power source (10), a direct current power source (20), and a power converter (50) having a plurality of switching elements (S1-S4) and reactors (L1, L2). The power converter (50) performs a direct current voltage conversion between the direct current power sources (10, 20) and a power source line (PL) in parallel by controlling the switching elements (S1-S4). Each of the switching elements (S1-S4) is disposed to be included in both a power conversion path formed between the direct current power source (10) and the power source line (PL), and a power conversion path formed between the direct current power source (20) and the power source line (PL). A phase difference ( φ ) between a carrier signal used for a pulse width modulation control to perform the direct current voltage conversion for the direct current power source (10), and a carrier signal used for a pulse width modulation control to perform the direct current voltage conversion for the direct current power source (20) is controlled according to the operation condition of the power converter (50).
摘要:
A power supply system (200) includes a power supply circuit (100) that includes a plurality of battery modules (102), each of which has a battery (10). The power supply circuit (100) is configured such that the batteries (10) in the battery modules (102) are connected to each other in series in response to a gate driving signal from a controller (104). An alternating current voltage having a different phase is output by temporally changing the number of the batteries (10) connected in series in each of a plurality of power supply circuits (100).