Apparatus for controlling electric power for electric vehicle
First Claim
Patent Images
1. An apparatus for controlling electric power of an electric vehicle, comprising:
- a stand-by power generating portion for generating stand-by power utilizing auxiliary battery power from an auxiliary battery and outputting a micro control unit (MCU) reset signal for resetting an MCU in a case in which an MCU reset signal output condition exists;
an operating power generating portion for generating operating power supplied to a power consuming device utilizing power applied from the stand-by power generating portion in a case in which an operating power generating condition exists; and
an operation control portion for generating the MCU reset signal output condition and the operating power generating condition on the basis of an ignition switch signal and a main relay signal, wherein the operation control portion generating the MCU reset signal output condition only when the ignition switch is turned on in a state in which the main relay signal is in an off state, and wherein the operation control portion generating the operating power generating condition in a case in which at least one of the main relay signal and the ignition switch signal is in an on state.
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Abstract
A control system providing more stable operation of an electric vehicle. From when the ignition switch is turned on to when the power ratchet period is completed, because the reset signal in the state of active “low” is supplied only once, communications between the MCU and apparatuses connected to the MCU can be stable. In addition, because the reset signal in the state of active “low” is not generated even though the ignition switch is turned on during the power ratchet period after the ignition switch is turned off, unnecessary booting does not occur. Therefore, a malfunction between the MCU and a battery management system can be prevented.
5 Citations
15 Claims
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1. An apparatus for controlling electric power of an electric vehicle, comprising:
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a stand-by power generating portion for generating stand-by power utilizing auxiliary battery power from an auxiliary battery and outputting a micro control unit (MCU) reset signal for resetting an MCU in a case in which an MCU reset signal output condition exists;
an operating power generating portion for generating operating power supplied to a power consuming device utilizing power applied from the stand-by power generating portion in a case in which an operating power generating condition exists; and
an operation control portion for generating the MCU reset signal output condition and the operating power generating condition on the basis of an ignition switch signal and a main relay signal, wherein the operation control portion generating the MCU reset signal output condition only when the ignition switch is turned on in a state in which the main relay signal is in an off state, and wherein the operation control portion generating the operating power generating condition in a case in which at least one of the main relay signal and the ignition switch signal is in an on state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for power control in an electric vehicle, comprising:
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a stand-by power generation portion configured to output a control unit reset signal in response to a reset signal output condition;
an operating power generation portion configured to supply operating power to a power consuming device by utilizing power from the stand-by power generation portion in response to an operating power generation condition; and
an operation control portion configured to generate the reset signal output condition and the operating power generation condition based on an ignition switch signal and a main relay signal, wherein the operation control portion generates the reset signal output condition only when the ignition switch is turned on in a state in which the main relay signal is in an off state, and wherein the operation control portion generates the operating power generation condition when at least one of the main relay signal and the ignition switch signal is in an on state. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for power control in an electric vehicle, comprising:
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a stand-by power generation portion comprising a regulator providing a constant stand-by voltage, said regulator comprising a delay terminal and a reset terminal configured to output a control unit reset signal in response to a reset signal output condition;
an operating power generation portion configured to supply operating power to a power consuming device by utilizing power from the stand-by power generation portion in response to an operating power generation condition; and
an operation control portion configured to generate the reset signal output condition and the operating power generation condition, said control portion comprising a diode unit configured to receive an ignition switch signal and a main relay signal in parallel and process said signals, a capacitor electrically connected to the delay terminal of the stand-by power generation portion, said capacitor being charged by current from the delay terminal, a differential circuit communicating with the diode unit to receive a signal therefrom and outputting a differentiated signal, and a transistor comprising a base terminal receiving said differentiated signal, a collector terminal connected to the capacitor, and an emitter terminal connected to ground, said transistor discharging the capacitor in response to the signal output from the differential circuit, wherein the operation control portion generates the reset signal output condition only when the ignition switch is turned on in a state in which the main relay signal is in an off state, and wherein the operation control portion generates the operating power generation condition when at least one of the main relay signal and the ignition switch signal is in an on state.
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Specification