Search

CN-114103731-B - Environment-friendly vehicle and control method thereof

CN114103731BCN 114103731 BCN114103731 BCN 114103731BCN-114103731-B

Abstract

The present disclosure relates to an eco-friendly vehicle and a control method of the eco-friendly vehicle that optimizes a temperature of a battery of the eco-friendly vehicle towing the vehicle to be towed. The control method of the eco-friendly vehicle includes measuring a battery temperature during traction traveling in a state where a vehicle to be towed is connected, by the controller, applying the measured battery temperature to a predetermined function to obtain a trend of a battery temperature change, by the controller, predicting a time point when the temperature of the battery exceeds a predetermined reference temperature based on the trend of the battery temperature change, and by the controller, starting cooling the battery before reaching the predicted time point exceeding the predetermined reference temperature.

Inventors

  • Li Mingzhun

Assignees

  • 现代自动车株式会社
  • 现代自动车株式会社
  • 起亚株式会社
  • 起亚株式会社

Dates

Publication Date
20260421
Application Date
20210531
Priority Date
20200826

Claims (20)

  1. 1. A control method of an environmentally friendly vehicle, comprising: Identifying, by a controller, whether the eco-friendly vehicle is towed; measuring, by the controller, a battery temperature during traction travel in a state in which the vehicle to be towed is connected; applying, by the controller, the measured battery temperature to a predetermined function to obtain a trend of battery temperature variation; predicting, by the controller, a point in time when the temperature of the battery exceeds a predetermined reference temperature based on a trend of the temperature change of the battery, and By the controller, cooling of the battery is started before reaching a predicted point in time.
  2. 2. The method of claim 1, further comprising: comparing, by the controller, a learned fuel economy of the eco-friendly vehicle with a current fuel economy, and determining that the vehicle to be towed is connected to the eco-friendly vehicle when the current fuel economy is lower than the learned fuel economy.
  3. 3. The method of claim 1, further comprising: And through the controller, the connection of the vehicle to be towed is confirmed by information directly input by a user through a user interface.
  4. 4. The method of claim 1, further comprising: and comparing, by the controller, the braking current and determining that the vehicle to be towed is connected to the eco-friendly vehicle when the braking current increases by more than a predetermined amount.
  5. 5. The method of claim 1, further comprising: and comparing, by the controller, the current consumption of the battery and determining that the vehicle to be towed is connected to the eco-friendly vehicle when the current consumption of the battery increases by more than a predetermined amount.
  6. 6. The method of claim 1, further comprising: and judging, by the controller, that the vehicle to be towed is connected to the eco-vehicle by a towing flag generated when the eco-vehicle and the vehicle to be towed are connected.
  7. 7. The method of claim 1, further comprising: and immediately starting cooling the battery when the temperature of the battery exceeds the predetermined reference temperature by the controller.
  8. 8. The method of claim 1, further comprising: By the controller, when the temperature of the battery has not exceeded the predetermined reference temperature, waiting before reaching the predicted time point, and then starting cooling the battery before reaching the predicted time point.
  9. 9. The method of claim 1, wherein, The predetermined function is determined using regression analysis.
  10. 10. The method of claim 9, wherein, The regression analysis includes Lagrangian interpolation or least squares.
  11. 11. An environmentally friendly vehicle comprising: a motor; a battery storing electric power for driving the motor; a battery cooler for cooling the battery, and A controller that recognizes whether the eco-friendly vehicle is towed, measures a temperature of the battery during towing traveling in a state where a vehicle to be towed is connected, applies the measured battery temperature to a predetermined function to obtain a trend of battery temperature variation, predicts a time point when the temperature of the battery exceeds a predetermined reference temperature based on the trend of battery temperature variation, and starts cooling the battery before reaching the predicted time point.
  12. 12. The environmentally friendly vehicle as claimed in claim 11, wherein, The controller compares a learned fuel economy of the eco-friendly vehicle with a current fuel economy and determines that the vehicle to be towed is connected to the eco-friendly vehicle when the current fuel economy is lower than the learned fuel economy.
  13. 13. The environmentally friendly vehicle as claimed in claim 11, wherein, And the controller confirms the connection of the vehicle to be towed through information directly input by a user through a user interface.
  14. 14. The environmentally friendly vehicle as claimed in claim 11, wherein, The controller compares the braking current and determines that the vehicle to be towed is connected to the eco-friendly vehicle when the braking current increases by more than a predetermined amount.
  15. 15. The environmentally friendly vehicle as claimed in claim 11, wherein, The controller compares the current consumption of the battery and determines that the vehicle to be towed is connected to the eco-friendly vehicle when the current consumption of the battery increases by more than a predetermined amount.
  16. 16. The environmentally friendly vehicle as claimed in claim 11, wherein, The controller determines that the vehicle to be towed is connected to the eco-vehicle by a towing flag generated when the eco-vehicle and the vehicle to be towed are connected.
  17. 17. The environmentally friendly vehicle as claimed in claim 11, wherein, The controller immediately starts cooling the battery when the temperature of the battery exceeds the predetermined reference temperature.
  18. 18. The environmentally friendly vehicle as claimed in claim 11, wherein, The controller waits before reaching the predicted time point when the temperature of the battery has not exceeded the predetermined reference temperature, and then starts cooling the battery before reaching the predicted time point.
  19. 19. The environmentally friendly vehicle as claimed in claim 11, wherein, The predetermined function is determined using regression analysis.
  20. 20. The environmentally friendly vehicle as claimed in claim 19, wherein, The regression analysis includes Lagrangian interpolation or least squares.

Description

Environment-friendly vehicle and control method thereof Technical Field The present disclosure relates to a vehicle, and more particularly, to an eco-friendly vehicle having a traction device capable of towing a vehicle to be towed and using electric power of a battery as energy. Background As the population enjoying leisure activities such as camping and traveling increases, the demand for trailers for storing various articles or for mobile accommodation to be individually connected to vehicles also increases. Typically, a trailer is coupled to the vehicle using a coupling device disposed at the rear of the vehicle and is moved by the traction of the vehicle. That is, a typical trailer has only wheels and a rotating shaft, and does not itself generate separate power to drive the wheels. As described above, because a typical trailer itself does not have a separate power source for driving the wheels, overload of the traction vehicle's power system caused by the weight of the trailer may be problematic when the trailer is towed by the vehicle. When the vehicle of the traction trailer is an environmentally friendly vehicle equipped with a motor and a battery, the temperature of the battery excessively increases due to overload of the battery by the traction trailer. Disclosure of Invention An aspect of the present disclosure is to optimize the temperature of a battery of an eco-friendly vehicle towing a vehicle to be towed. Additional aspects of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure. According to an aspect of the present disclosure, there is provided a control method of an eco-friendly vehicle including measuring, by a controller, a battery temperature during traction traveling in a state in which a vehicle to be towed is connected, applying, by the controller, the measured battery temperature to a predetermined function to obtain a trend of a battery temperature change, predicting, by the controller, a time point at which the temperature of the battery exceeds a predetermined reference temperature based on the trend of the battery temperature change, and starting cooling, by the controller, the battery before reaching the predicted time point exceeding the predetermined reference temperature. The method may further include comparing, by the controller, the learned fuel economy of the eco-vehicle (learned) with the current fuel economy and determining that the vehicle to be towed is connected to the eco-vehicle in response to the current fuel economy being relatively lower than the learned fuel economy. The method may further include confirming, by the controller, the connection of the vehicle to be towed by information directly entered by the user through the user interface. The method may further include comparing, by the controller, the braking current and determining that the vehicle to be towed is connected to the eco-friendly vehicle when the braking current increases by more than a predetermined amount. The method may further include comparing, by the controller, current consumption of the battery and determining that the vehicle to be towed is connected to the eco-friendly vehicle when the current consumption of the battery increases by more than a preset amount. The method may further include determining, by the controller, that the vehicle to be towed is connected to the eco-vehicle by a towing flag generated when the eco-vehicle and the vehicle to be towed are connected. The method may further include immediately starting, by the controller, cooling the battery in the event that the temperature of the battery has exceeded the predetermined reference temperature. The method may further include waiting, by the controller, before reaching the predicted point in time of exceeding the predetermined reference temperature, and then starting cooling the battery before reaching the predicted point in time of exceeding the predetermined reference temperature, in a case where the temperature of the battery has not exceeded the predetermined reference temperature. Regression analysis may be used to provide the predetermined function. Regression analysis may include Lagrangian interpolation or least squares. According to another aspect of the present disclosure, there is provided an eco-friendly vehicle including a motor configured to drive wheels, a battery configured to store electric power for driving the motor, a battery cooler configured to cool the battery, and a controller configured to measure a temperature of the battery during traction traveling in a state in which a vehicle to be towed is connected, apply the measured battery temperature to a predetermined function to obtain a trend of a battery temperature change, predict a point of time at which the temperature of the battery exceeds a predetermined reference temperature based on the trend of the battery temperature