Rear cabin thermal management systems and methods

Patent metadata

Field	Value
Publication number	US-11491843-B2
Application number	US-201916411085-A
Country	US
Kind code	B2
Filing date	May 13, 2019
Priority date	May 13, 2019
Publication date	Nov 8, 2022
Grant date	Nov 8, 2022

Abstract

Systems and methods for mitigating a thermal impact on a vehicle cabin caused by a battery thermal-management system, include determining a status of vehicle climate control system; determining whether a battery thermal-management system of the vehicle is operating above a determined threshold; and if the vehicle climate control system is active and the battery thermal-management system of the vehicle is operating above the determined threshold, adjusting at least one of a plurality of cabin temperature control parameters to mitigate a thermal impact of the battery thermal-management system on a rear portion of the vehicle cabin.

First claim

What is claimed is:

1. A method for mitigating a thermal impact on a vehicle cabin caused by a battery thermal-management system, the method comprising:
determining a status of vehicle climate control system;
determining whether a battery thermal-management system of the vehicle is operating above a determined threshold; and
if the vehicle climate control system is active and the battery thermal-management system of the vehicle is operating above the determined threshold, adjusting at least one of a plurality of cabin temperature control parameters to increase a cooling effect on the cabin and thereby mitigate a thermal impact of the battery thermal-management system on the vehicle cabin.

2. The method of claim 1 , wherein the cabin temperature control parameters comprise at least one of a target air outlet temperature, a climate-control-system blower speed, a climate-control-system, cooled seat setting, a window shade setting and an electrochromatic window setting.

3. The method of claim 1 , wherein determining the status of the vehicle climate control system comprises determining at least one of whether a blower is turned on and whether a vehicle air conditioning system is turned on.

4. The method of claim 1 , wherein determining the status of the vehicle climate control system comprises determining whether the vehicle climate control system is being used to cool the vehicle.

5. The method of claim 1 , wherein determining whether a battery thermal-management system of the vehicle is operating above a determined threshold comprises determining whether a battery fan level is above a determined fan speed.

6. The method of claim 1 , further comprising determining whether a temperature of a vehicle battery pack is above a determined threshold temperature and not adjusting the plurality of cabin temperature control parameters unless the vehicle battery pack is above the determined threshold temperature.

7. The method of claim 1 , wherein the determined threshold for the battery thermal-management system comprises a threshold at or above which heat from the battery thermal-management system transfers sufficient heat to the cabin to cause an unwanted temperature impact to occur in the cabin.

8. The method of claim 7 , wherein the unwanted temperature impact comprises a temperature gradient between a front portion of the vehicle and a rear portion of the vehicle greater than a determined temperature differential amount.

9. The method of claim 1 , wherein the determined threshold for the battery thermal-management system comprises a determined operating level of the battery thermal-management system.

10. The method of claim 1 , further comprising determining whether a rear portion of the cabin of the vehicle is occupied by one or more passengers and adjusting the at least one of the one or more cabin temperature control parameters mitigate a thermal impact of the battery thermal-management system on a rear portion of the vehicle cabin only if the rear portion of the cabin of the vehicle is occupied by one or more passengers.

11. A system for mitigating a thermal impact on a vehicle cabin caused by a battery thermal-management system, the system comprising a cabin temperature control circuit comprising a communications interface coupled to receive information from vehicle components, the cabin temperature control circuit configured to determine a status of vehicle climate control system, determine whether a battery thermal-management system of the vehicle is operating above a determined threshold, and if the vehicle climate control system is active and the battery thermal-management system of the vehicle is operating above the determined threshold, adjust at least one of a plurality of cabin temperature control parameters to increase a cooling effect on the cabin and thereby mitigate a thermal impact of the battery thermal-management system on the vehicle cabin.

12. The system of claim 11 , wherein the cabin temperature control parameters comprise at least one of a target air outlet temperature, a climate-control-system blower speed, a climate-control-system, cooled seat setting, a window shade setting and an electrochromatic window setting.

13. The system of claim 11 , wherein determining the status of the vehicle climate control system comprises determining at least one of whether a blower is turned on and whether a vehicle air conditioning system is turned on.

14. The system of claim 11 wherein determining the status of the vehicle climate control system comprises determining whether the vehicle climate control system is being used to cool the vehicle.

15. The system of claim 11 , wherein determining whether a battery thermal-management system of the vehicle is operating above a determined threshold comprises determining whether a battery fan level is above a determined fan speed.

16. The system of claim 11 , wherein the cabin temperature control circuit is further configured to determine whether a temperature of a vehicle battery pack is above a determined threshold temperature and not adjusting the plurality of cabin temperature control parameters unless the vehicle battery pack is above the determined threshold temperature.

17. The system of claim 11 , wherein the determined threshold for the battery thermal-management system comprises a threshold at or above which heat from the battery thermal-management system transfers sufficient heat to the cabin to cause an unwanted temperature impact to occur in the cabin.

18. The system of claim 17 , wherein the unwanted temperature impact comprises a temperature gradient between a front portion of the vehicle and a rear portion of the vehicle greater than a determined temperature differential amount.

19. The system of claim 11 , wherein the determined threshold for the battery thermal-management system comprises a determined operating level of the battery thermal-management system.

20. The system of claim 11 , wherein the cabin temperature control circuit is further configured to determine whether a rear portion of the cabin of the vehicle is occupied by one or more passengers and adjusting the at least one of the one or more cabin temperature control parameters mitigate a thermal impact of the battery thermal-management system on a rear portion of the vehicle cabin only if the rear portion of the cabin of the vehicle is occupied by one or more passengers.

21. The system of claim 11 , wherein the vehicle components comprise at least one of a vehicle climate control system and the battery thermal management system.

22. A vehicle, comprising
a battery pack, comprising one or more batteries;
a battery thermal management system to control the temperature of one or more batteries of the battery pack;
a climate control system;
a cabin temperature control circuit comprising a communications interface coupled to receive information from the climate control system and the battery thermal management system, the cabin temperature control circuit configured to determine a status of vehicle climate control system, determine whether a battery thermal-management system of the vehicle is operating above a determined threshold, and if the vehicle climate control system is active and the battery thermal-management system of the vehicle is operating above the determined threshold, adjust at least one of a plurality of cabin temperature control parameters to increase a cooling effect on the cabin and thereby mitigate a thermal impact of the battery thermal-management sys

Assignees

• Toyota Eng & Mfg North America

Inventors

• Williams Patrick P
• Cosgrove David W

Classifications

• B60H1/00642 Primary

  Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices (B60H1/3201 - B60H1/3208, B60H1/3225 take precedence) · CPC title

• B60H1/00742

  by detection of the vehicle occupants' presence; by detection of conditions relating to the body of occupants, e.g. using radiant heat detectors · CPC title

• B60H2001/00307

  Component temperature regulation using a liquid flow · CPC title

• B60H1/00278

  for the battery · CPC title

• B60H1/00885

  Controlling the flow of heating or cooling liquid, e.g. valves or pumps (B60H1/00899 takes precedence; constructions of valves B60H1/00485) · CPC title