Abstract: A power distribution device includes first to seventh lines, a first switch controlling conduction and interruption of the third line, a second switch controlling conduction and interruption of the fourth line, a third switch controlling conduction and interruption of the fifth line, a control unit controlling conductive states and interruption states of the first to third switches, a first fuse that is provided in the third line, a second fuse that is provided in the fourth line and that has a lower current carrying capacity than the first fuse, and a third fuse that is provided in the fifth line and that has a lower current carrying capacity than the first fuse.

Abstract: It is provided a power supply device to connect a first anode-side battery terminal to a second cathode-side battery terminal, connect a first switch between a first cathode-side battery terminal and a cathode-side input terminal, connect a second switch between a first connection point, which is between the first anode-side battery terminal and the second cathode-side battery terminal, and the cathode-side input terminal, connect a third switch between a second connection point, which is between the first anode-side battery terminal and the second cathode-side battery terminal, and an anode-side input terminal, connect a fourth switch between a second anode-side battery terminal and an anode-side input terminal, connect the cathode-side output terminal to a line connecting the first switch and the first cathode-side battery terminal, and connect the anode-side output terminal to a line connecting the anode-side input terminal and the second anode-side battery terminal.

Abstract: A positive electrode-side input terminal is connected to a first positive electrode-side battery terminal, a negative electrode-side input terminal is connected to a second negative electrode-side battery terminal, a first switch is connected between a first negative electrode-side battery terminal and a second positive electrode-side battery terminal, a second switch is connected between a second positive electrode-side battery terminal and a first connection point between the positive electrode-side input terminal and the first positive electrode-side battery terminal, a third switch is connected between the first negative electrode-side battery terminal and a second connection point between the negative electrode-side input terminal and the second negative electrode-side battery terminal, a positive electrode-side output terminal is connected to a line connecting the second switch and the second positive electrode-side battery terminal, and a negative electrode-side output terminal to a line connecting the

Abstract: Positive electrode-side input terminal is connected to first positive electrode-side battery terminal, negative electrode-side input terminal is connected to second negative electrode-side battery terminal, a switch is connected between first negative electrode-side battery terminal and second positive electrode-side battery terminal, between second positive electrode-side battery terminal and first connection point between positive electrode-side input terminal and first positive electrode-side battery terminal, and between first negative electrode-side battery terminal and second connection point between negative electrode-side input terminal and second negative electrode-side battery terminal, positive electrode-side output terminal is connected to positive electrode-side converter output terminal, negative electrode-side output terminal is connected to negative electrode-side converter output terminal, positive electrode-side converter input terminal is connected to a line connecting positive electrode-si

Abstract: A positive electrode-side input terminal is connected to a first positive electrode-side battery terminal, a negative electrode-side input terminal is connected to a second negative electrode-side battery terminal, a first switch is connected between a first negative electrode-side battery terminal and a second positive electrode-side battery terminal, a second switch is connected between a second positive electrode-side battery terminal and a first connection point between the positive electrode-side input terminal and the first positive electrode-side battery terminal, a third switch is connected between the first negative electrode-side battery terminal and a second connection point between the negative electrode-side input terminal and the second negative electrode-side battery terminal, a positive electrode-side output terminal is connected to a line connecting the second switch and the second positive electrode-side battery terminal, and a negative electrode-side output terminal to a line connecting the

Abstract: A service plug is capable of being inserted and pulled into and out of a plug receiving unit disposed on a power supply path which connects a battery and a load. The service plug includes: a first terminal connected to a battery-side power supply path in a state that the service plug is inserted in the plug receiving unit; a second terminal connected to a load-side power supply path in the state that the service plug is inserted in the plug receiving unit; and a semiconductor device. The semiconductor device is disposed between the first terminal and the second terminal, and permits or prohibits conduction between the first terminal and the second terminal in response to control of turning on and off of the semiconductor device.

Abstract: A heat dissipation structure for a semiconductor circuit breaker to release heat generated by the semiconductor circuit breaker which is capable of switching between conduction and blocking between predetermined targets, the heat dissipation structure compring a bus bar which is a plate material made of metal on which the semiconductor circuit breaker is provided, and a heat pipe which is a thin sheet long member made of metal. The semiconductor circuit breaker is mounted on a surface of the busbar. The heat pipe is disposed so that one part of the heat pipe contacts an opposite surface from the surface of the bus bar and another part of the heat pipe is connected to a heat dissipation member.