Electric power supply control apparatus for vehicle and electric power supply control method for vehicle

Patent metadata

Field	Value
Publication number	US-11247684-B2
Application number	US-201916557631-A
Country	US
Kind code	B2
Filing date	Aug 30, 2019
Priority date	Oct 2, 2018
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

An electric power supply control apparatus for a vehicle decreases a first electric power prior to switching the modes, when a sum of a request value of a second electric power and the first electric power exceeds a total electric power upper limit value in the mode before the switching, and switches the modes after the sum of the decreased first electric power and the request value of the second electric power becomes equal to or smaller than the total electric power upper limit value.

First claim

The invention claimed is:

1. An electric power supply control apparatus for a vehicle, the vehicle comprising;
a battery;
an electric motor configured to generate a driving force of the vehicle by receiving driving electric power from the battery; and
a temperature controller configured to heat or cool at least one of a vehicle cabin and the battery by receiving temperature controlling electric power from the battery, the electric power supply control apparatus for the vehicle being configured to
execute:
a driving prioritizing mode in which a supply of the driving electric power is prioritized over a supply of the temperature controlling electric power within a range of an upper limit value of a predetermined driving electric power; and
a temperature control prioritizing mode in which the supply of the temperature controlling electric power is prioritized over the supply of the driving electric power within a range of an upper limit value of a predetermined temperature controlling electric power upper limit value, and

decrease a first electric power prior to switching the modes when a sum of a request value of a second electric power and the first electric power exceeds a total electric power upper limit value in the mode before the switching, and switch the modes after the sum of the decreased first electric power and the request value of the second electric power becomes equal to or smaller than the total electric power upper limit value, the first electric power being the electric power of which supply is prioritized in each of the modes among the electric power of the driving electric power and the temperature controlling electric power, the second electric power being the electric power of which supply is not prioritized, and the total electric power upper limit value being an upper limit value of electric power that can be used by at least one of the electric motor and the temperature controller within electric power that can be output by the battery.

2. The electric power supply control apparatus for the vehicle according to claim 1 , wherein the apparatus is configured to determine on switching the modes when the request value of the second electric power becomes greater than an upper limit value of the second electric power, and a difference between the request value and the upper limit value of the second electric power becomes a first predetermined value or greater in the mode before the switching.

3. The electric power supply control apparatus for the vehicle according to claim 2 , wherein the apparatus is configured to set the upper limit value of the second electric power so that a sum of the upper limit value of the second electric power and the first electric power becomes smaller than the first predetermined value or greater than the total electric power upper limit value in the mode before the switching.

4. The electric power supply control apparatus for the vehicle according to claim 1 , wherein the apparatus is configured to
in switching the modes, decrease an upper limit value of the first electric power in the mode before the switching, and switch the modes after a value resulting from subtracting the upper limit value of the first electric power and the request value of the second electric power from the total electric power upper limit value becomes a second predetermined value or greater, and
set the upper limit value of the second electric power so that the sum of the upper limit value of the second electric power and the first electric power becomes smaller than the total electric power upper limit value by the second predetermined value or greater in a mode after the switching.

5. The electric power supply control apparatus for the vehicle according to claim 2 , wherein the apparatus is configured to
in switching the modes, decrease an upper limit value of the first electric power in the mode before the switching, and switch the modes after a value resulting from subtracting the upper limit value of the first electric power and the request value of the second electric power from the total electric power upper limit value becomes a second predetermined value or greater, and
set the upper limit value of the second electric power so that the sum of the upper limit value of the second electric power and the first electric power becomes smaller than the total electric power upper limit value by the second predetermined value or greater in a mode after the switching.

6. The electric power supply control apparatus for the vehicle according to claim 3 , wherein the apparatus is configured to
in switching the modes, decrease an upper limit value of the first electric power in the mode before the switching, and switch the modes after a value resulting from subtracting the upper limit value of the first electric power and the request value of the second electric power from the total electric power upper limit value becomes a second predetermined value or greater, and
set the upper limit value of the second electric power so that the sum of the upper limit value of the second electric power and the first electric power becomes smaller than the total electric power upper limit value by the second predetermined value or greater in a mode after the switching.

7. The electric power supply control apparatus for the vehicle according to claim 1 , wherein, in a mode before the switching, the first electric power is the driving electric power, and the second electric power is the temperature controlling electric power.

8. The electric power supply control apparatus for the vehicle according to claim 2 , wherein, in a mode before the switching, the first electric power is the driving electric power, and the second electric power is the temperature controlling electric power.

9. The electric power supply control apparatus for the vehicle according to claim 3 , wherein, in a mode before the switching, the first electric power is the driving electric power, and the second electric power is the temperature controlling electric power.

10. The electric power supply control apparatus for the vehicle according to claim 1 , wherein the apparatus is configured to limit at least one of an increasing rate and a decreasing rate of the driving electric power during switching the modes to a predetermined permissible value or smaller.

11. The electric power supply control apparatus for the vehicle according to claim 2 , wherein the apparatus is configured to limit at least one of an increasing rate and a decreasing rate of the driving electric power during switching the modes to a predetermined permissible value or smaller.

12. The electric power supply control apparatus for the vehicle according to claim 3 , wherein the apparatus is configured to limit at least one of an increasing rate and a decreasing rate of the driving electric power during switching the modes to a predetermined permissible value or smaller.

13. The electric power supply control apparatus for the vehicle according to claim 1 , wherein the apparatus is configured to set an upper limit value of the driving electric power to the total electric power upper limit value in the driving prioritizing mode.

14. The electric power supply control apparatus for the vehicle according to claim 2 , wherein the apparatus is configured to set an upper limit value of the driving electric power to the total electric power upper limit value in the driving prioritizing mode.

15. The electric power supply control apparatus for the vehicle according to claim 3 , wherein the apparatus is configured to set an upper limit value of the driving electric power to the total electric

Assignees

• Subaru Corp

Inventors

• Hoshi Ryohei
• Moriya Fumiyuki
• Yabe Hirofumi
• Watanabe Ken

Classifications

• B60H2001/2253

  related to an operational state of the vehicle or a vehicle component · CPC title

• B60L2240/34

  Cabin temperature · CPC title

• B60H1/00392 Primary

  for electric vehicles having only electric drive means · CPC title

• B60L2240/42

  related to electric machines · CPC title

• B60W2710/246

  Temperature · CPC title