THERMAL MANAGEMENT OF VEHICLE BATTERY PACK DURING CHARGING
First Claim
1. A method for charging a battery pack of a vehicle, comprising:
- determining an operating heating rise of the battery pack in the event the vehicle is driven at a predetermined operating condition;
obtaining a charging time to charge the battery pack;
determining a terminal avoidance temperature for the battery pack at the end of the charge time, which terminal avoidance temperature is no greater than an upper threshold temperature less the operating heating rise, wherein the upper threshold temperature is a temperature at which a cooling system of the vehicle automatically turns on to cool the battery pack; and
charging the battery pack and operating the cooling system during charging to prevent the battery pack from reaching the terminal avoidance temperature.
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Accused Products
Abstract
A process for charging a battery pack of a vehicle is provided. The vehicle has a cooling system that automatically turns on to cool the battery pack when its temperature reaches a high threshold temperature. The process involves determining an operating heating rise of the battery pack in the event the vehicle is driven at a predetermined operating condition. The process determines a target temperature for the battery pack at the end of charging which is set to prevent the cooling system from turning on if the vehicle is driven under the predetermined operating condition. The battery pack is then charged and the cooling system is operated during charging to prevent the battery pack from reaching the target temperature. By preventing the subsequent operation of the cooling system, the driving range provided by the battery pack may be extended.
45 Citations
14 Claims
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1. A method for charging a battery pack of a vehicle, comprising:
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determining an operating heating rise of the battery pack in the event the vehicle is driven at a predetermined operating condition; obtaining a charging time to charge the battery pack; determining a terminal avoidance temperature for the battery pack at the end of the charge time, which terminal avoidance temperature is no greater than an upper threshold temperature less the operating heating rise, wherein the upper threshold temperature is a temperature at which a cooling system of the vehicle automatically turns on to cool the battery pack; and charging the battery pack and operating the cooling system during charging to prevent the battery pack from reaching the terminal avoidance temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A charging system for a vehicle having a battery pack driving an electric motor, the system including:
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a cooling system for cooling at least the battery pack; and a controller which determines an operating heating rise of the battery pack in the event the vehicle is driven at a predetermined operating condition, determines a charging time to charge the battery pack, and determines a terminal avoidance temperature for the battery pack at the end of the charge time, wherein the terminal avoidance temperature is no greater than an upper threshold temperature less the operating heating rise, and wherein the upper threshold temperature is a temperature at which a cooling system of the vehicle automatically turns on to cool the battery pack; wherein the controller operates the cooling system during charging to prevent the battery pack from reaching the terminal avoidance temperature. - View Dependent Claims (11, 12, 13, 14)
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Specification