THERMAL MANAGEMENT SYSTEM FOR VEHICLE HAVING TRACTION MOTOR
First Claim
1. A thermal management system for a vehicle, the vehicle including a traction motor and a battery pack, the thermal management system comprising:
- a battery circuit for cooling a battery circuit thermal load including the battery pack;
a battery circuit temperature sensor positioned to sense a temperature relating to a temperature of the battery circuit thermal load; and
a controller configured to control the battery circuit to maintain the temperature sensed by the battery circuit temperature sensor below a first battery circuit temperature limit when the controller detects that the vehicle is not connected to an external electrical source, and to maintain the temperature sensed by the battery circuit temperature sensor below a second battery circuit temperature limit that is lower than the first battery circuit temperature limit when the controller detects that the vehicle is connected to the external electrical source.
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Abstract
A thermal management system for a vehicle includes a traction motor and a battery pack. The thermal management system comprises a battery circuit for cooling a battery circuit thermal load including the battery pack, a battery circuit temperature sensor positioned to sense a temperature relating to a temperature of the battery circuit thermal load, and a controller. The controller is configured to control the battery circuit to maintain the temperature sensed by the battery circuit temperature sensor below a first battery circuit temperature limit when the controller detects that the vehicle is not connected to an external electrical source, and to maintain the temperature sensed by the battery circuit temperature sensor below a second battery circuit temperature limit that is lower than the first battery circuit temperature limit when the controller detects that the vehicle is connected to the external electrical source.
59 Citations
18 Claims
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1. A thermal management system for a vehicle, the vehicle including a traction motor and a battery pack, the thermal management system comprising:
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a battery circuit for cooling a battery circuit thermal load including the battery pack; a battery circuit temperature sensor positioned to sense a temperature relating to a temperature of the battery circuit thermal load; and a controller configured to control the battery circuit to maintain the temperature sensed by the battery circuit temperature sensor below a first battery circuit temperature limit when the controller detects that the vehicle is not connected to an external electrical source, and to maintain the temperature sensed by the battery circuit temperature sensor below a second battery circuit temperature limit that is lower than the first battery circuit temperature limit when the controller detects that the vehicle is connected to the external electrical source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A thermal management system as claimed in cooling a battery circuit thermal load for a battery circuit of a vehicle, the vehicle including a traction motor and a battery pack that is at least part of the battery circuit thermal load, the method comprising:
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cooling the battery circuit thermal load to maintain a temperature of the battery circuit thermal load below a first battery circuit temperature limit while not charging the battery pack using an external electrical source; and cooling the battery circuit thermal load to maintain the temperature of the battery circuit thermal load below a second battery circuit temperature limit, the second battery circuit temperature limit being lower than the first battery circuit temperature limit while charging the battery pack using an external electrical source. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A thermal management system for an electric vehicle, the electric vehicle including a traction motor, a battery, a battery charge control module, and a passenger cabin, the thermal management system comprising:
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a motor circuit for cooling a motor circuit thermal load including the traction motor; a motor circuit temperature sensor positioned to sense a temperature of fluid in the motor circuit; and a controller configured to control the motor circuit to maintain the temperature sensed by the motor circuit temperature sensor below a first motor circuit temperature limit when the controller detects that the vehicle is not connected to an external electrical source, and to maintain the temperature sensed by the motor circuit temperature sensor below a second motor circuit temperature limit that is higher than the first motor circuit temperature limit when the controller detects that the vehicle is connected to an external electrical source.
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Specification