Heating control apparatus and method for plug-in hybrid electric vehicle

Patent metadata

Field	Value
Publication number	US-10406887-B2
Application number	US-201615355680-A
Country	US
Kind code	B2
Filing date	Nov 18, 2016
Priority date	Jul 29, 2016
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A heating control apparatus for a plug-in hybrid electric vehicle utilizing an engine and a drive-motor as power sources includes a temperature detecting device for detecting temperature data used to control indoor heating of the plug-in hybrid electric vehicle, where an indoor temperature of the plug-in hybrid electric vehicle may be increased by generating a ratio of required heat based on the temperature data, generating an engine-on reference value and an engine-off reference value based on the ratio of required heat, and driving the engine based on the engine-on reference value and the engine-off reference value.

First claim

What is claimed is:

1. A heating control method for a plug-in hybrid electric vehicle, comprising:
determining, by a vehicle controller, whether temperature data satisfies a heating condition when a vehicle mode is an EV mode;
generating, by the vehicle controller, a ratio of required heat with respect to heating capacity based on the temperature data when the temperature data satisfies the heating condition;
generating, by the vehicle controller, an engine-on reference value and an engine-off reference value based on the ratio of required heat; and
driving, by the vehicle controller, an engine based on the engine-on reference value and the engine-off reference value so as to increase an indoor temperature of the vehicle,
wherein the ratio of required heat is generated by using a measured coolant temperature, an outdoor temperature, and a target coolant temperature of the temperature data, and wherein the ratio of required heat is generated according to an equation of

K
=

CTm
-
OT

CTg
-
OT

,

where K is the ratio of required heat, CTm is the measured coolant temperature, OT is the outdoor temperature, and CTg is the target coolant temperature.

2. The heating control method of claim 1 , wherein the generating of the engine-on reference value and the engine-off reference value comprises:
determining, by the vehicle controller, whether the ratio of required heat is larger than a predetermined value; and
generating, by the vehicle controller, a first engine-on reference value and a first engine-off reference value when the ratio of required heat is larger than a predetermined value.

3. The heating control method of claim 2 , wherein the generation of the first engine-on reference value and first engine-off reference value comprises:
generating, by the vehicle controller, the first engine-on reference value by using at least one of the ratio of required heat, an EV-on reference value, and a charging-on reference value; and
generating, by the vehicle controller, the first engine-off reference value by using at least one of the ratio of required heat, an EV-off reference value, and a charging-off reference value.

4. The heating control method of claim 3 , wherein the first engine-on reference value is generated according to an equation of EV1 on =(EV on −CHG on )*K+CHG on ,
where EV1on is the first engine-on reference value, EVon is the EV-on reference value, CHGon is the charging-on reference value, and K is the ratio of required heat.

5. The heating control method of claim 3 , wherein the first engine-off reference value is generated according to an equation of EV1 on =(EV on −CHG on )*K+CHG on ,
where EV1off is the first engine-off reference value, EVoff is the EV-off reference value, CHGoff is a charging-off reference value, and K is the ratio of required heat.

6. The heating control method of claim 2 , further comprising:
generating, by the vehicle controller, a second engine-on reference value and a second engine-off reference value when the ratio of required heat is smaller than the predetermined value.

7. The heating control method of claim 6 , wherein the generation of the second engine-on reference value and second engine-off reference value comprises:
generating, by the vehicle controller, the second engine-on reference value by using at least one of the ratio of required heat, an HEV-on reference value, and a charging-on reference value; and
generating, by the vehicle controller, the second engine-off reference value by using at least one of the ratio of required heat, an HEV-off reference value, and a charging-off reference value.

8. The heating control method of claim 7 , wherein the second engine-on reference value is generated according to an equation of EV2 on =(EV on −HEV on )*K+HEV on ,
where EV2on is the second engine-on reference value, EVon is the EV-on reference value, HEVon is the HEV-on reference value, and K is the ratio of required heat.

9. The heating control method of claim 7 , wherein the second engine-off reference value is generated according to an equation of EV2 on =(EV on −HEV on )*K+HEV on ,
where EV2off is the second engine-off reference value, EVoff is the EV-off reference value, HEVoff is the HEV-off reference value, and K is the ratio of required heat.

10. A heating control method for a plug-in hybrid electric vehicle, comprising:
determining, by a vehicle controller, whether temperature data satisfies a heating condition when a vehicle mode is an EV mode;
generating, by the vehicle controller, a ratio of required heat with respect to heating capacity based on the temperature data when the temperature data satisfies the heating condition;
generating, by the vehicle controller, an engine-on reference value and an engine-off reference value based on the ratio of required heat; and
driving, by the vehicle controller, an engine based on the engine-on reference value and the engine-off reference value so as to increase an indoor temperature of the vehicle,
wherein the ratio of required heat is generated by using at least one of an indoor volume, a blower capacity, a target indoor temperature, a measured coolant temperature, an outdoor temperature, and a measured indoor temperature, and
wherein the ratio of required heat is generated according to an equation of

K
=

CTm
-
OT

ITm
+

V
F

*

(

ITg
-
ITm

)

-
OT

,

where K is the ratio of required heat, CTm is the measured coolant temperature, OT is the outdoor temperature, ITm is the measured indoor temperature, V is the indoor volume, F is the blower capacity, and ITg is the target indoor temperature.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Jeong Won Young

Classifications

• B60W2555/20

  Ambient conditions, e.g. wind or rain · CPC title

• B60K2006/4825

  Electric machine connected or connectable to gearbox input shaft · CPC title

• B60K6/48

  Parallel type · CPC title

• B60H1/00764

  the input being a vehicle driving condition, e.g. speed (B60H1/00828, B60H1/00864 take precedence) · CPC title

• B60W10/06

  including control of combustion engines · CPC title