Power Source Control Device for Power Steering
First Claim
1. A power supply control device for an electric power steering device used for a power supply system comprising a first battery connected to the electric power steering device via a first power supply line and a second battery connected to the electric power steering device via a second power supply line, wherein when detecting a state of the second battery, said power supply control device restricts or disconnects power supply from the first battery to the electric power steering device while it permits power supply from the second battery to the electric power steering device, characterized in that said power supply control device prevents the detection of the state of the second battery if a vehicle speed is higher than a predetermined reference value.
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Accused Products
Abstract
According to the present invention, a power supply control device for an electric power steering device used for a power supply system comprises a main battery 40 connected to the electric power steering device via a first power supply line and a sub-battery 50 connected to the electric power steering device via a second power supply line, wherein when detecting the state of the sub-battery, said power supply control device restricts or disconnects power supply from the main battery to the electric power steering device while it permits power supply from the sub-battery to the electric power steering device, characterized in that said power supply control device prevents the detection of the state of the second battery if a vehicle speed is higher than a predetermined reference value.
53 Citations
6 Claims
- 1. A power supply control device for an electric power steering device used for a power supply system comprising a first battery connected to the electric power steering device via a first power supply line and a second battery connected to the electric power steering device via a second power supply line, wherein when detecting a state of the second battery, said power supply control device restricts or disconnects power supply from the first battery to the electric power steering device while it permits power supply from the second battery to the electric power steering device, characterized in that said power supply control device prevents the detection of the state of the second battery if a vehicle speed is higher than a predetermined reference value.
- 2. A power supply control device for an electric power steering device used for a power supply system comprising a first battery connected to the electric power steering device via a first power supply line and a second battery connected to the electric power steering device via a second power supply line, wherein when detecting a state of the second battery, said power supply control device restricts power supply from the first battery to the electric power steering device while it permits power supply from the second battery to the electric power steering device, characterized in that, when detecting the state of the second battery, said power supply control device restricts the power supply from the first battery to the electric power steering device within a range in which range a predetermined operation of the electric power steering device is enabled based on the restricted power supply.
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6. A power supply control device for an electric power steering device used for a power supply system comprising a first battery connected to the electric power steering device via a first power supply line and a second battery whose power supply voltage is lower than the first battery, said second battery being connected to the electric power steering device via a second power supply line, characterized in that when detecting a state of the second battery, said power supply control device restricts or disconnects power supply from the first battery to a predetermined load other than the electric power steering device, said predetermined load consuming large power for a short time period, while it permits power supply from the second battery to the predetermined load.
Specification