System and method for controlling cooling or heating of battery
Disclosed herein is a system for controlling the cooling or heating of a battery. The system includes a battery having a hermetic sealing structure to prevent passage of air from an exterior, a pressure sensor provided on the battery to measure internal pressure of the battery, an climate control system cooling or heating the battery, and a controller determining cooling or heating of the climate control system depending on whether the internal pressure of the battery is positive pressure or negative pressure based on a measured result of the pressure sensor, the controller controlling cooling or heating strength depending on a level of the positive pressure or negative pressure.
1. A system for controlling cooling or heating of a battery, comprising:
a battery having a hermetic sealing structure to prevent passage of air f between an interior region of the battery and an exterior region;
a pressure sensor provided on the battery and configured to measure an internal pressure of the battery;
a climate control system configured to cool and heat the battery;
a controller configured to determine whether to cool or heat the battery depending on whether the internal pressure of the battery is a positive pressure or a negative pressure based on a measured result of the pressure sensor, the controller controlling a cooling or a heating strength depending of the measured positive pressure or negative pressure,
a communicating passageway connected to an interior of the battery to an exterior of the battery; and
an on-off valve provided within the communicating passageway to perform a selective on-off operation,
wherein the controller opens the on-off valve when the positive pressure or negative pressure of the battery is exceeds a maximum value and closes the on-off valve when internal pressure and atmospheric pressure of the battery equal.
2. The system according to claim 1 , further comprising:
a relief valve installed within the communicating passageway to equalize pressure between an atmospheric pressure and the internal pressure of the battery when the on-off valve is opened.
3. The system according to claim 1 , wherein
the controller cools the battery when the internal pressure of the battery is positive pressure, and heats the battery when the internal pressure of the battery is negative pressure.
4. The system according to claim 3 , wherein
the controller calculates the internal pressure or temperature of the battery depending on the measured pressure, and terminates the cooling or heating control when the internal pressure or temperature of the battery is within a stable range.
5. A method for controlling cooling or heating of a battery using a control system according to claim 1 , comprising:
selecting, by a controller, cooling or heating of an climate control system depending on whether internal pressure of the battery is positive pressure or negative pressure; and
regulating, by the controller, cooling or heating strength depending on a level of the internal pressure of the battery, namely, the positive pressure or negative pressure.
6. The method according to claim 5 , further comprising:
calculating the internal pressure or temperature of the battery by measuring the level of the positive pressure or negative pressure; and
terminating the cooling or heating when the internal pressure or temperature of the battery is within a stable range.
7. A method for controlling cooling or heating of a battery using a control system according to claim 1 , comprising:
selecting, by the controller, cooling or heating of a climate control system depending on whether internal pressure of the battery is positive pressure or negative pressure;
reducing, by the controller, cooling strength when the internal pressure of the battery is less than or equal to atmospheric pressure, and terminating cooling when the internal pressure or temperature of the battery calculated based on a level of the positive pressure or negative pressure decreases to less than or equal to a first predetermined value; and
reducing, by the controller, heating strength when the internal pressure of the battery greater than or equal to atmospheric pressure, and terminating heating when the internal pressure or temperature increases to greater than or equal to a second predetermined.
8. A method for controlling cooling or heating of a battery, comprising:
measuring, a sensor, pressure of the battery sealed from an exterior;
cooling or heating, by a climate control system, the battery when the battery is positive pressure or negative pressure;
controlling, by a controller, cooling or heating strength supplied to the battery depending on the positive pressure or negative pressure;
terminating cooling or heating when an internal pressure or temperature of the battery calculated from the positive pressure or negative pressure is within a stable range;
opening an on-off valve when the positive pressure or negative pressure of the battery is greater than a maximum value; and
closing the on-off valve when internal pressure and atmospheric pressure of the battery equal.