In-vehicle control device
AssigneeMitsubishi Jidosha Kogyo Kabushiki Kaisha
InventorsHirokazu Maezawa, Shohei Kawano, Shinji Akiyoshi, Yoshinori Tomita
Life of this patent
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Abstract
An in-vehicle control device (10) includes a determination unit (11) that determines whether or not a target contactor (21) for connecting and disconnecting a high-voltage circuit of a battery (2) installed in a vehicle is likely to have sticking after the high-voltage circuit is used; and an off control unit (12) that performs an off control to prohibit current conduction to the target contactor (21) for a given period of time when the determination unit (11) determines that the target contactor (21) is likely to have sticking, whereby attempt to remove a transient short circuiting of the target contactor (21).
Claims3
An in-vehicle control device comprising:
- a determination unit that determines whether or not a target contactor for connecting and disconnecting a high-voltage circuit of a battery installed in a vehicle is likely to have sticking after the high-voltage circuit is used;
- and
- an off control unit that performs an off control to prohibit current conduction to the target contactor for a given period of time when the determination unit determines that the target contactor is likely to have sticking,
- wherein the high-voltage circuit comprises a first contactor interposed on one of positive or negative sides, a second contactor interposed on the other of the positive or negative sides, and a precharge contactor connected in parallel with the first contactor and in series with a resistor,
- the vehicle comprises an auxiliary battery that is connected to the battery via each of the first contactor and the second contactor,
- the target contactor is the first contactor, and
- the off control unit keeps the second contactor and the precharge contactor turned on, and charges the auxiliary battery when a state of charge of the auxiliary battery becomes equal to or lower than a given lower limit value, while the off control is being performed.
Dependencies are inferred from the claim text.