DISCHARGE CONTROLLER AND ELECTRIC VEHICLE
First Claim
Patent Images
1. A discharge controller configured to:
- periodically receive from a host controller a pulse signal, as a discharge control signal, which indicates a command for controlling a discharge device that discharges a capacitor; and
when a duty ratio of the received discharge control signal deviates from a predetermined duty ratio of the discharge control signal, control the discharge device on the basis of a last command indicated by the discharge control signal received last time.
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Abstract
A discharge controller is configured to periodically receive from a host controller a pulse signal, as a discharge control signal, which indicates a command for controlling a discharge device that discharges a capacitor, and when a duty ratio of the received discharge control signal deviates from a predetermined duty ratio of the discharge control signal, control the discharge device on the basis of a last command indicated by the discharge control signal received last time.
20 Citations
5 Claims
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1. A discharge controller configured to:
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periodically receive from a host controller a pulse signal, as a discharge control signal, which indicates a command for controlling a discharge device that discharges a capacitor; and when a duty ratio of the received discharge control signal deviates from a predetermined duty ratio of the discharge control signal, control the discharge device on the basis of a last command indicated by the discharge control signal received last time. - View Dependent Claims (2)
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3. An electric vehicle comprising:
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one of a first capacitor, which is incorporated in an electric circuit between a battery and a drive motor and which smoothes current supplied to the motor, and a second capacitor, which temporarily stores electric power; a discharge device that discharges the one of the capacitors; a discharge controller configured to control the discharge device; and a host controller configured to periodically transmit a pulse signal, as a discharge control signal, which indicates one of permission of the use of the discharge device and prohibition of the use of the discharge device, wherein when a duty ratio of the discharge control signal received by the discharge controller does not coincides with any one of a permission duty ratio, which indicates the permission of the use of the discharge device, and a prohibition duty ratio, which indicates the prohibition of the use of the discharge device, the discharge controller is configured to maintain a state of one of the permission of the use of the discharge device and the prohibition of the use of the discharge device, which is indicated by the discharge control signal received last time. - View Dependent Claims (4, 5)
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Specification