Welding check method for system main relay
AssigneeToyota Jidosha Kabushiki Kaisha
InventorShilong XU
Life of this patent
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Abstract
A welding check method for a system main relay provided between a high-voltage battery and one or more auxiliary loads that are mounted on a vehicle, the method includes stopping electric power supply from the high-voltage battery to the auxiliary load after Ready-OFF of the vehicle, performing a welding check of the system main relay after the electric power supply to the auxiliary load is stopped, and starting the electric power supply from the high-voltage battery to the auxiliary load in response to a request from the auxiliary load in a case where the system main relay is not welded as a result of the welding check.
Claims3
A welding check method for a system main relay provided between a high-voltage battery and one or more auxiliary loads that are mounted on a vehicle, the welding check method comprising:
- stopping electric power supply from the high-voltage battery to the auxiliary load after the vehicle is in a Ready-OFF state;
- performing a welding check of the system main relay after the electric power supply to the auxiliary load is stopped;
- and
- starting the electric power supply from the high-voltage battery to the auxiliary load in response to a request from the auxiliary load when a result of the welding check indicates that the system main relay is not welded.
Dependencies are inferred from the claim text.