Voltage regulator, operation method thereof, voltage regulating system, and mobile vehicle
First Claim
1. A voltage regulator, coupled to an alternator and a battery, the alternator having a first output terminal, a second output terminal and a third output terminal, the voltage regulator comprising:
- a voltage detection unit having a voltage detection terminal couple to the third output terminal of the alternator, the voltage detection unit coupled to the battery through a power terminal, the voltage detection unit operatively detecting a voltage level of a phase signal outputted by the third output terminal of the alternator and generating an enable signal; and
a startup assisting unit coupled to the voltage detection unit, a rotor coil(131) of the alternator, and the battery;
the startup assisting unit receiving a supplying voltage from the battery and operatively generating a first exciting current responsive to the enable signal for exciting the rotor coil;
wherein when the voltage detection unit detects that the voltage level of the phase signal outputted by the third output terminal is greater than a predetermined voltage threshold, the voltage detection unit outputs the enable signal to cause the startup assisting unit to generate the first exciting current to the rotor coil of the alternator, so that the alternator is able to establish voltage under low rotational speed;
wherein the startup assisting unit comprises;
a first resistor, the first terminal of the first resistor being coupled to the battery;
a second resistor, the first terminal of the second resistor being coupled to the battery and the second terminal of the second resistor being coupled to the voltage detection unit;
a current amplifying unit having an input terminal, an output terminal and a control terminal, the input terminal being coupled to the second terminal of the first resistor, the output terminal being coupled to the rotor coil of the alternator, and the control terminal being coupled to the voltage detection unit to receive the enable signal; and
a first diode, an anode thereof being coupled to the output terminal of the current amplifying unit, and an cathode thereof being coupled to the rotor coil of the alternator;
wherein the current amplifying unit generates the first exciting current according to the enable signal.
1 Assignment
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Accused Products
Abstract
A voltage regulator, an operation method thereof, and a voltage regulating system, and a mobile vehicle are provided. The voltage regulator coupled to an alternator and a battery includes a voltage detection unit which is coupled to the alternator and a startup assisting unit. The voltage detection unit operatively generates an enable signal responsive to an output voltage of the alternator. The startup assisting unit is coupled to the alternator, the battery, and the voltage detection unit. The startup assisting unit operatively generates a first exciting current to excite a rotor coil according to the enable signal. When the voltage detection unit detects that the output voltage is greater than a predetermined voltage threshold, the voltage detection unit outputs the enable signal causing the startup assisting unit to generate the first exciting current to the rotor coil, thereby facilitating the alternator to establish voltage under low rotational speed.
5 Citations
15 Claims
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1. A voltage regulator, coupled to an alternator and a battery, the alternator having a first output terminal, a second output terminal and a third output terminal, the voltage regulator comprising:
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a voltage detection unit having a voltage detection terminal couple to the third output terminal of the alternator, the voltage detection unit coupled to the battery through a power terminal, the voltage detection unit operatively detecting a voltage level of a phase signal outputted by the third output terminal of the alternator and generating an enable signal; and a startup assisting unit coupled to the voltage detection unit, a rotor coil(131) of the alternator, and the battery;
the startup assisting unit receiving a supplying voltage from the battery and operatively generating a first exciting current responsive to the enable signal for exciting the rotor coil;wherein when the voltage detection unit detects that the voltage level of the phase signal outputted by the third output terminal is greater than a predetermined voltage threshold, the voltage detection unit outputs the enable signal to cause the startup assisting unit to generate the first exciting current to the rotor coil of the alternator, so that the alternator is able to establish voltage under low rotational speed; wherein the startup assisting unit comprises; a first resistor, the first terminal of the first resistor being coupled to the battery; a second resistor, the first terminal of the second resistor being coupled to the battery and the second terminal of the second resistor being coupled to the voltage detection unit; a current amplifying unit having an input terminal, an output terminal and a control terminal, the input terminal being coupled to the second terminal of the first resistor, the output terminal being coupled to the rotor coil of the alternator, and the control terminal being coupled to the voltage detection unit to receive the enable signal; and a first diode, an anode thereof being coupled to the output terminal of the current amplifying unit, and an cathode thereof being coupled to the rotor coil of the alternator; wherein the current amplifying unit generates the first exciting current according to the enable signal. - View Dependent Claims (2, 3, 4, 5, 14, 15)
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6. A voltage regulating system, comprising:
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an alternator, comprising a rotor coil, a first output terminal, a second output terminal, a third output terminal and a ground terminal;
the alternator operatively generating a voltage level of a phase signal by the third output terminal;a battery coupled to the alternator, configured for outputting a supply voltage; a starter unit coupled to the battery and the alternator; and a voltage regulator coupled to the alternator and the battery, the voltage regulator comprising; a voltage detection unit having a voltage detection terminal coupled to the third output terminal of the alternator, operatively detecting the voltage level of the phase signal of the alternator and generating an enable signal; and a startup assisting unit coupled to the alternator, the rotor coil of the alternator, and the battery, the startup assisting unit receiving the supply voltage from the battery and operatively generating a first exciting current responsive to the enable signal for exciting the rotor coil; wherein, when the voltage detection unit detects that the voltage level of the phase signal of the alternator is greater than a predetermined voltage threshold, the voltage detection unit outputs the enable signal to cause the startup assisting unit to generate the first exciting current to the rotor coil of the alternator, so that the alternator is able to establish voltage under a low rotational speed; wherein the startup assisting unit comprises; a first resistor, the first terminal of the first resistor being coupled to the battery; a second resistor, the first terminal of the second resistor being coupled to the battery and the second terminal of the second resistor being coupled to the voltage detection unit; a current amplifying unit having an input terminal, an output terminal and a control terminal, the input terminal being coupled to the second terminal of the first resistor, the output terminal being coupled to the rotor coil of the alternator, and the control terminal being coupled to the voltage detection unit to receive the enable signal; and a first diode, an anode thereof being coupled to the output terminal of the current amplifying unit, and an cathode thereof being coupled to the rotor coil of the alternator; wherein the current amplifying unit generates the first exciting current according to the enable signal. - View Dependent Claims (7, 8, 9)
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10. A mobile vehicle, comprising:
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a main body; an alternator mounted on the main body, the alternator comprising a rotor coil, a first output terminal, a second output terminal, a third output terminal and a ground terminal;
the alternator operatively generating a voltage level of the phase signal outputted by the third output terminal;a battery coupled to the alternator, configured for outputting a supply voltage; a starter unit comprising a starter switch, the starter switch being coupled to the battery; and a voltage regulator mounted on the main body, the voltage regulator coupled to the alternator and the battery, the voltage regulator comprising; a voltage detection unit having a voltage detection terminal coupled to the third output terminal of the alternator, and operatively detecting the voltage level of the phase signal of the alternator and generating an enable signal; and a startup assisting unit coupled to the alternator, the rotor coil of the alternator, and the battery, the startup assisting unit receiving the supply voltage from the battery and operatively generating a first exciting current responsive to the enable signal for exciting the rotor coil; wherein, when the voltage detection unit detects that the voltage level of the phase signal of the alternator is greater than a predetermined voltage threshold, the voltage detection unit outputs the enable signal to cause the startup assisting unit to generate the first exciting current to the rotor coil of the alternator, so that the alternator is able to establish voltage under a low rotational speed; wherein the startup assisting unit comprises; a first resistor, the first terminal of the first resistor being coupled to the battery; a second resistor, the first terminal of the second resistor being coupled to the battery and the second terminal of the second resistor being coupled to the voltage detection unit; a current amplifying unit having an input terminal, an output terminal and a control terminal, the input terminal being coupled to the second terminal of the first resistor, the output terminal being coupled to the rotor coil of the alternator, and the control terminal being coupled to the voltage detection unit to receive the enable signal; and a first diode, an anode thereof being coupled to the output terminal of the current amplifying unit, and an cathode thereof being coupled to the rotor coil of the alternator; wherein the current amplifying unit generates the first exciting current according to the enable signal. - View Dependent Claims (11, 12, 13)
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Specification