Distribution device for a high-voltage system of an electric vehicle
AssigneeSchaeffler Technologies AG & Co. KG
InventorsStephanie PREISLER, Richard WELDLE
Life of this patent
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Abstract
A distribution device for a high-voltage system of an electric vehicle has a first sup-ply line having a first line section, a second line section and a controllable second switchgear unit. The distribution device further has a second supply line having a third line section, a fourth line section and a controllable fifth switchgear unit. Furthermore, the distribution device has a third supply line having a controllable third switchgear unit, wherein the third switchgear unit connects the second line section of the first supply line and third line section of the second supply line. The various line sections are designed for connecting to various high-voltage components.
Claims15
A distribution device for a high-voltage system of an electric vehicle, wherein the high-voltage system has a first high-voltage electrical system and a second high-voltage electrical system and the distribution device has:
- a first supply line having a first line section, a second line section and a controllable second switchgear unit, wherein the second switchgear unit connects the first line section and second line section in a closed state and decouples the first line section and second line section in an open state,
- a second supply line having a third line section, a fourth line section and a controllable fifth switchgear unit, wherein the fifth switchgear unit connects the third line section and fourth line section in a closed state and decouples the third line section and fourth line section in an open state,
- a third supply line having a controllable third switchgear unit, wherein the third switchgear unit connects the second line section of the first supply line and third line section of the second supply line, wherein
- the first line section of the first supply line is designed for connecting to a first terminal of a first energy source, to a first terminal of a first electrical machine, to a first terminal of a charging unit, to a first terminal of a first DC/DC converter and to a first terminal of at least one further high-voltage load,
- the second line section of the first supply line is designed for connecting to a first terminal of a second energy source and to a first terminal of a second DC/DC converter,
- the third line section of the second supply line is designed for connecting to a second terminal of the first energy source and to a second terminal of the first DC/DC converter,
- the fourth line section of the second supply line is designed for connecting to a second terminal of the second energy source, to a second terminal of the second electrical machine, to a second terminal of a second DC/DC converter and to a second terminal of a charging unit.
A method for operating a high-voltage system of an electric vehicle, wherein the high-voltage system has a first high-voltage electrical system and a second high-voltage electrical system and also a distribution device as claimed in and the method comprises the follow
- receiving monitoring data or monitoring signals from the monitoring unit of the third switchgear unit by the control unit, wherein the monitoring data or the monitoring signals are formed to signal to the control unit that opening of the third switchgear unit has been triggered and a short circuit has been detected,
- in response to the receipt of the monitoring data or the monitoring signals, generating and sending a first control signal to the first switchgear unit by the control unit, wherein the first control signal is formed to cause the disconnector of the first switchgear unit to assume an open state,
- sending diagnostic data to central computing unit by the control unit to ascertain which type of short circuit fault exists, wherein the diagnostic data at least specify that the third switchgear unit has been transitioned to an open state or a short circuit has been detected,
- in response to the sending of the diagnostic data to the central computing unit, receiving a control command from the central computing unit by the control unit, wherein
- a) if the central computing unit ascertains that a short circuit exists in the first high-voltage electrical system and the second high-voltage electrical system, the control command includes no instruction that causes the control unit to reconnect one of the high-voltage electrical systems,
- b) if the central computing unit ascertains that a short circuit only exists in the first high-voltage electrical system, the control command includes an instruction to send a second control signal to the second switchgear unit, wherein the second control signal is formed to cause the disconnector of the second switchgear unit to be transitioned to a closed state,
- c) if the central computing unit ascertains that a short circuit only exists in the second high-voltage electrical system, the control command includes an instruction to send a third control signal to the fifth switchgear unit, wherein the third control signal is formed to cause the disconnector of the fifth switchgear unit to be transitioned to a closed state,
- d) if the central computing unit ascertains that no short circuit exists, the control command includes an instruction to send a fourth control signal to the first switchgear unit and third switchgear unit, wherein the fourth control signal is formed to cause the respective disconnector of the first switchgear unit and the third switchgear unit to be transitioned to a closed state,
- executing the control command by means of the control unit.
Dependencies are inferred from the claim text.