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AssigneeHitachi Astemo, Ltd.
InventorsHiroshi NAKANO, Nobuyasu KANEKAWA, Takao FUKUDA, Kentaro JUMONJI
Estimating the term…
A vehicle control device includes: a current detecting unit for detecting a current flowing through a lead wire, and outputting a current detection value; a current interrupting unit for interrupting the current flowing through the lead wire; and a computing unit for computing a temperature rise value caused by Joule heat in the lead wire using the current detection value, estimating an environmental temperature of an environment in which the lead wire is wired based on the temperature rise value, outside air temperature information of a vehicle, inside air temperature information in a vehicle cabin, and solar radiation information, and determining whether to output a current interruption instruction to the current interrupting unit based on the temperature of the lead wire estimated using the environmental temperature.
A vehicle control device, comprising:
An overheat protection device that computes a temperature rise value caused by Joule heat of a lead wire using a current detection value output from a current detecting unit that detects a current flowing through the lead wire, estimates an environmental temperature of an environment in which the lead wire is wired based on the temperature rise value, outside air temperature information of a vehicle, inside air temperature information in a vehicle cabin, and solar radiation information, and determines whether to output a current interrupting instruction to a current interrupting unit that interrupts a current flowing through the lead wire based on a temperature of the lead wire estimated using the environmental temperature.
Dependencies are inferred from the claim text.