System and method for adaptive battery temperature control of a vehicle over a known route

• US 9,290,108 B2
• Filed: 03/31/2014
• Issued: 03/22/2016
• Est. Priority Date: 03/31/2014
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Payne, Joshua D., Dufford, Mohammad E.
• Primary Examiner(s): MARC-COLEMAN, MARTHE Y
• Application Number:
  US14/231,255
• Publication Number:
  US 20150274030A1
• Time in Patent Office: 722 Days
• Field of Search: 701/22, 701/103, 701/110, 701/408, 701/99, 903/903, 903/907, 180/65.29, 180/65.1, 320/150, 320/128, 320/137, 320/144, 320/153
• US Class Current: 1/1
• CPC Class Codes: B60L 58/25 by controlling the electric load
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: G01C 21/3461 Preferred or disfavoured areas, e.g. dangerous zones, toll or emission zones, intersections, manoeuvre types, segments such as motorways, toll roads, ferries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y10S 903/903 having energy storing means, e.g. battery, capacitor

Abstract

A system/method for controlling a battery temperature of a vehicle over a known route. The method may include providing a route having a starting and ending location, iteratively sensing a battery temperature of the battery when the vehicle is travelling along the route, and dividing the route into a plurality of route segments. The method may also include storing a known route having a plurality of segments where each segment has a corresponding battery temperature of the vehicle when the vehicle previously travelled along the segment. The method may also include providing a cooling device associated with a battery of the vehicle, initiating the cooling device during a previous time segment when the battery temperature for a particular time segment of the known route exceeds a high temperature threshold, and reducing an amount of battery power draw from the battery during the previous time segment.

Claims

1. A method for controlling a temperature of a vehicle battery over a known route, the method comprising:

storing, in a memory, a route;

detecting, using a sensor and during a first trip along the route, temperature data corresponding to a battery temperature of the battery;

determining, by a processor, that a temperature event has occurred at an event location during the first trip along the route based on the temperature data, the temperature event corresponding to the battery temperature rising to or above a threshold temperature;

storing, in the memory, the temperature event and the event location;

detecting, by a GPS device and during a second trip along the route, a current location of the vehicle;

determining, by the processor, that the vehicle is approaching the event location based on the current location of the vehicle; and

controlling, by the processor, at least one vehicle component to reduce the battery temperature of the battery prior to the vehicle reaching the event location when the processor determines that the vehicle is approaching the event location in order to reduce the likelihood of a second temperature event occurring at the event location.

2. The method of claim 1 wherein the at least one vehicle component includes at least one of a cooling fan or a radiator.

3. The method of claim 1 further comprising reducing, by the processor, a power output of the battery in order to reduce the likelihood of the second temperature event occurring at the event location and wherein the at least one component includes the battery.

4. The method of claim 1 further comprising determining, by the processor, when to control the at least one vehicle component to reduce the battery temperature based on at least one of a current battery temperature or a distance between the current location of the vehicle and the event location.

5. The method of claim 1 further comprising predicting, by the processor, that the vehicle is traveling along the route during the second trip along the route.

6. The method of claim 5 wherein predicting that the vehicle is traveling along the route includes:

selecting, using the processor, at least two candidate routes;

assigning, using the processor, a route weight for each of the at least two candidate routes; and

predicting, using the processor, that a candidate route from the at least two candidate routes is the route based on the candidate route having a higher route weight than each of the other candidate routes.

7. The method of claim 1 wherein the temperature event is caused by at least one of a power request initiated by a driver, a power request initiated by the processor or a battery charge event.

8. The method of claim 1 wherein the route includes at least two different routes linked together.

9. The method of claim 1 further comprising determining, by the processor, an amount to control the vehicle component to reduce the battery temperature based on at least one of a current battery temperature or a distance between the current location of the vehicle and the event location.

10. An apparatus for controlling a temperature of a vehicle battery over a known route, the apparatus comprising:

a battery having a battery temperature and being configured to store electrical energy;

a memory configured to store a route, at least one temperature event corresponding to the battery temperature rising to or above a threshold temperature during a first trip along the route, and an event location of the temperature event;

at least one controllable device configured to reduce the temperature of the battery;

a GPS device configured to detect a current location of the vehicle; and

a processor configured to determine that the vehicle is approaching the event location based on the current location of the vehicle and to control the at least one controllable device to reduce the battery temperature of the battery prior to the vehicle reaching the event location when or after determining that the vehicle is approaching the event location to reduce the likelihood of a second temperature event occurring at the event location.

11. The apparatus of claim 10 wherein the at least one controllable device includes a fan configured to blow air in a vicinity of the battery.

12. The apparatus of claim 10 wherein the at least one controllable device includes a radiator system configured to pump a liquid cooling composition in an area proximate to the battery.

13. The apparatus of claim 10 wherein the processor is further configured to reduce a power output of the battery to reduce the likelihood of the second temperature event occurring at the event location.

14. The apparatus of claim 10 wherein the processor is further configured to determine when to control the at least one vehicle component to reduce the battery temperature based on at least one of a current battery temperature or a distance between the current location of the vehicle and the event location.

15. The apparatus of claim 10 wherein the processor is further configured to:

select at least two candidate routes;

assign a route weight for each of the at least two candidate routes; and

predict that a candidate route from the at least two candidate routes is a current route of the vehicle based on the candidate route having a higher route weight than each of the other candidate routes.

16. A method for controlling a temperature of a battery of a vehicle comprising:

storing, in a memory, a plurality of known routes;

detecting, using a GPS device, a first location of the vehicle;

predicting, by a processor, that a current route of the vehicle is one of the known routes based on at least the first location of the vehicle;

storing, in the memory, a temperature event that was detected at an event location during a previous trip of the vehicle along the current route;

detecting, using a GPS device, a current location of the vehicle;

determining, by the processor, that the vehicle is approaching the event location based on the current location of the vehicle; and

controlling, by the processor, at least one vehicle component to reduce the battery temperature of the battery prior to the vehicle reaching the event location when or after the processor determines that the vehicle is approaching the event location in order to reduce the likelihood of a second temperature event occurring at the event location.

17. The method of claim 16 wherein the at least one vehicle component includes at least one of a cooling fan or a radiator.

18. The method of claim 16 further comprising reducing, by the processor, a power output of the battery in order to reduce the likelihood of a second temperature event occurring at the event location and wherein the at least one component includes the battery.

19. The method of claim 16 further comprising determining, by the processor, when to control the at least one vehicle component to reduce the battery temperature based on at least one of a current battery temperature or a distance between the vehicle and the event location.

20. The method of claim 16 wherein the temperature event is caused by at least one of a power request initiated by a driver, a power request initiated by the processor or a battery charge event.