Vehicle and method of controlling the same

Patent metadata

Field	Value
Publication number	US-12097841-B2
Application number	US-202017122632-A
Country	US
Kind code	B2
Filing date	Dec 15, 2020
Priority date	Sep 7, 2020
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A vehicle for supplying a constant current to a motor without changing a gate voltage even at high temperatures is provided. The vehicle includes at least one switching element that supplies a current to a motor; a temperature sensor that detects temperature information of at least one transistor; at least one processor that transmits a clock signal corresponding to driving of the motor; and a driver that receives the clock signal, and transmits a driving signal to the transistor. A converter then determines a duty of the driving signal based on the temperature information received from the temperature sensor.

First claim

What is claimed is:

1. A vehicle, comprising:
at least one switching element configured to supply a current to a motor;
a temperature sensor configured to detect temperature information of at least one transistor;
at least one processor configured to transmit a clock signal corresponding to driving of the motor;
a driver configured to receive the clock signal, and transmit a driving signal to the transistor;
a converter configured to determine a duty of the driving signal based on the temperature information received from the temperature sensor,
wherein the temperature information includes a sensing voltage of the temperature sensor,
wherein the processor is configured to correct the sensing voltage of the temperature sensor based on an increase in a temperature of the transistor, and
wherein the converter is configured to increase the duty of the driving signal in response to the corrected sensing voltage.

2. The vehicle according to claim 1 , wherein:
the clock signal includes a triangular wave signal;
the driving signal includes a pulse width modulation (PWM) signal; and
the converter is configured to convert the triangular wave signal into the PWM signal.

3. The vehicle according to claim 1 , wherein:
the processor is configured to correct the sensing voltage of the temperature sensor based on a decrease in the temperature of the transistor; and
the converter is configured to decrease the duty of the driving signal in response to the corrected sensing voltage.

4. The vehicle according to claim 1 , wherein the converter is configured to determine the duty based on an intersection of the sensing voltage and the clock signal.

5. The vehicle according to claim 1 , wherein:
the at least switching element is provided with at least one transistor element; and
a saturation current of the at least one transistor element is configured to be determined independently from the temperature information.

6. The vehicle according to claim 1 , wherein the vehicle is provided as one of a hybrid electric vehicle (HEV), a battery electric vehicle (BEV), a plug-in hybrid electric vehicle (PHEV), and a fuel cell electric vehicle (FCEV).

7. A method of controlling a vehicle, comprising:
obtaining, by a temperature sensor, temperature information of at least one transistor;
transmitting, by at least one processor, a clock signal corresponding to driving of a motor to a driver;
receiving, by the driver, the clock signal, and transmitting a driving signal to the transistor, and
determining, by a converter, a duty of the driving signal based on the temperature information received from the temperature sensor,
wherein the temperature information of the at least one transistor includes a sensing voltage of the temperature sensor, and
wherein the determining of the duty of the driving signal includes:
correcting the sensing voltage based on an increase in a temperature of the transistor; and
increasing the duty of the driving signal in response to the corrected sensing voltage.

8. The method according to claim 7 , wherein:
the clock signal includes a triangular wave signal; and
the driving signal includes a pulse width modulation (PWM) signal,
the method includes converting, by the converter, the triangular wave signal into the PWM signal.

9. The method according to claim 7 , wherein the determining of the duty of the driving signal includes:
correcting the sensing voltage based on a decrease in the temperature of the transistor; and
decreasing the duty of the driving signal in response to the corrected sensing voltage.

10. The method according to claim 7 , wherein the determining of the duty of the driving signal includes:
determining the duty based on an intersection of the sensing voltage and the clock signal.

11. The method according to claim 7 , wherein:
the at least switching element is provided with at least one transistor element; and
a saturation current of the at least one transistor element is configured to be determined independently from the temperature information.

12. The method according to claim 7 , wherein the vehicle is provided as one of a hybrid electric vehicle (HEV), a battery electric vehicle (BEV), a plug-in hybrid electric vehicle (PHEV), and a fuel cell electric vehicle (FCEV).

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Jang Jiwoong
• Shin Sangcheol
• Lim Youngseul
• Lee Yoojong
• Lee Ki Jong
• Jeong Kangho

Classifications

• B60W20/15

  Control strategies specially adapted for achieving a particular effect · CPC title

• B60W20/40

  Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers {(power-up or power-down of the driveline B60W30/192)} · CPC title

• G06F1/10

  Distribution of clock signals {, e.g. skew} · CPC title

• Y02T90/40

  Application of hydrogen technology to transportation, e.g. using fuel cells · CPC title

• Y02T10/62

  Hybrid vehicles · CPC title