Vehicle including charging system with Y-capacitors, charging system of vehicle, and control device of charging system
A vehicle includes an inlet connected to a connector, a power accumulation device that accumulates power, two or more charging circuits that convert power from the inlet into direct current power having a predetermined voltage adapted for the power accumulation device, a switching system that switches between states where each of the charging circuits and the inlet are electrically connected and disconnected, a control device that controls the switching system, and a detection circuit that detects a maximum current value of charging power supplied from the outside. The control device controls the switching system such that the minimum number of charging circuits that can convert power having the maximum current value detected by the detection circuit is in a state of being electrically connected to the inlet.
1 . A vehicle chargeable from an outside, the vehicle comprising:
an inlet configured to be connected to a connector of a cable that supplies power from the outside;
a power accumulation device configured to accumulate power;
two or more charging circuits configured to convert power from the inlet into direct current power having a predetermined voltage adapted for the power accumulation device, wherein each of the two or more charging circuits includes a Y-capacitor for filtering out common mode noise;
a switching system configured to switch between states where each of the charging circuits and the inlet are electrically connected and disconnected;
a control device configured to control the switching system; and
a detection circuit configured to detect a maximum current value of charging power supplied from the outside,
wherein the control device is configured to control the switching system such that the minimum number of charging circuits that are able to convert power having the maximum current value detected by the detection circuit is in a state of being electrically connected to the inlet.
2 . The vehicle according to claim 1 , further comprising a plurality of chargers, wherein each charger comprises one charging circuit of the two or more charging circuits.
3 . The vehicle according to claim 1 , further comprising one charger comprising all of the two or more charging circuits.
4 . The vehicle according to claim 1 , wherein the switching system includes a plurality of relays provided respectively corresponding to the charging circuits and configured to switch between states where each of the charging circuits and the inlet are electrically connected and disconnected.
5 . The vehicle according to claim 1 , wherein:
one of the charging circuits is a main charging circuit and the others are secondary charging circuits; and
the switching system includes one or more relays provided respectively corresponding to each of the secondary charging circuits and configured to switch between the states where each of the secondary charging circuits and the inlet are electrically connected and disconnected from the main charging circuit.
6 . The vehicle according to claim 1 , wherein each of the two or more charging circuits includes:
the Y-capacitor connected to a first bus; and
a second Y-capacitor connected to a second bus, wherein a node connected to a ground voltage is connected between the Y-capacitor and the second Y-capacitor.
7 . The vehicle according to claim 1 , wherein the detection circuit is configured to detect the maximum current value based on a potential of a connector connection signal received when the connector is connected to the inlet.
8 . The vehicle according to claim 1 , wherein the control device is configured to maintain the minimum number of charging circuits in the state of being electrically connected to the inlet throughout a charging operation without switching additional charging circuits to the state of being electrically connected to the inlet during the charging operation.
9 . The vehicle according to claim 1 , wherein the maximum current value detected by the detection circuit represents a predetermined capacity of the cable that supplies power from the outside.
10 . A charging system of a vehicle chargeable from an outside, the vehicle including an inlet configured to be connected to a connector of a cable that supplies power from the outside, and a power accumulation device configured to accumulate power, the charging system comprising:
two or more charging circuits configured to convert power from the inlet into direct current power having a predetermined voltage adapted for the power accumulation device, wherein each of the two or more charging circuits includes a Y-capacitor for filtering out common mode noise;
a switching system configured to switch between states where each of the charging circuits and the inlet are electrically connected and disconnected;
a control device configured to control the switching system; and
a detection circuit configured to detect a maximum current value of charging power supplied from the outside,
wherein the control device is configured to control the switching system such that the minimum number of charging circuits that are able to convert power having the maximum current value detected by the detection circuit is in a state of being electrically connected to the inlet.
11 . The charging system according to claim 10 , wherein each of the two or more charging circuits includes:
the Y-capacitor connected to a first bus; and
a second Y-capacitor connected to a second bus, wherein a node connected to a ground voltage is connected between the Y-capacitor and the second Y-capacitor.
12 . The charging system according to claim 10 , wherein the detection circuit is configured to detect the maximum current value based on a potential of a connector connection signal received when the connector is connected to the inlet.
13 . The charging system according to claim 10 , wherein the control device is configured to maintain the minimum number of charging circuits in the state of being electrically connected to the inlet throughout a charging operation without switching additional charging circuits to the state of being electrically connected to the inlet during the charging operation.
14 . The charging system according to claim 10 , wherein the maximum current value detected by the detection circuit represents a predetermined capacity of the cable that supplies power from the outside.
15 . A control device of a charging system of a vehicle chargeable from an outside, the vehicle including an inlet configured to be connected to a connector of a cable that supplies power from the outside, and a power accumulation device configured to accumulate power, and the charging system including two or more charging circuits configured to convert power from the inlet into direct current power having a predetermined voltage adapted for the power accumulation device, wherein each of the two or more charging circuits includes a Y-capacitor for filtering out common mode noise, a switching system configured to switch between states where each of the charging circuits and the inlet are electrically connected and disconnected, and a detection circuit configured to detect a maximum current value of charging power supplied from the outside, the control device comprising:
an electronic control unit configured to control the switching system such that the minimum number of charging circuits that are able to convert power having the maximum current value detected by the detection circuit is in a state of being electrically connected to the inlet.
16 . The control device according to claim 15 , wherein each of the two or more charging circuits includes:
the Y-capacitor connected to a first bus; and
a second Y-capacitor connected to a second bus, wherein a node connected to a ground voltage is connected between the Y-capacitor and the second Y-capacitor.
17 . The control device according to claim 15 , wherein the detection circuit is configured to detect the maximum current value based on a potential of a connector connection signal received when the connector is connected to the inlet.
18 . The control device according to claim 15 , wherein the electronic control unit is configured to maintain the minimum number of charging circuits in the state of being electrically connected to the inlet throughout a charging operation without switching additional charging circuits to the state of being electrically connected to the inlet during the charging operation.
19 . The control device according to claim 15 , wherein the maximum current value detected by the detection circuit represents a predetermined capacity of the cable that supplies power from the outside.