SYSTEM AND METHOD OF BATTERY TEMPERATURE CONTROL
First Claim
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1. A battery temperature control system comprising:
- a battery;
a converter electrically connected to the battery and comprising first and second switches and a first inductor, the converter configured to boost or drop an output voltage of the battery into an output voltage of converter;
a DC linker electrically connected to the converter and comprising a first capacitor, the DC linker configured to stabilize the output voltage of the converter; and
an inverter electrically connected to the DC linker and comprising a non-contact transformer, the non-contact transformer comprising a first winding on a primary side and a second winding on a secondary side, the first and second windings separated from each other by a gap therebetween, the non-contact transformer further comprising first to fourth switches provided on the primary side and a fifth switch and a second inductor provided on the secondary side.
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Abstract
A temperature control system for a battery in an energy storage system is disclosed. In one aspect, the temperature control system includes a circuit configured to determine that the temperature of the battery has been maintained below a normal operation temperature for a predetermined duration. The circuit is further configured to alternatingly repeat charging and discharging operations using a winding in a primary side of an inverter to generate reactive current to flow in opposite directions through the battery until the temperature of the battery is restored to the normal operation temperature.
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Citations
15 Claims
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1. A battery temperature control system comprising:
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a battery; a converter electrically connected to the battery and comprising first and second switches and a first inductor, the converter configured to boost or drop an output voltage of the battery into an output voltage of converter; a DC linker electrically connected to the converter and comprising a first capacitor, the DC linker configured to stabilize the output voltage of the converter; and an inverter electrically connected to the DC linker and comprising a non-contact transformer, the non-contact transformer comprising a first winding on a primary side and a second winding on a secondary side, the first and second windings separated from each other by a gap therebetween, the non-contact transformer further comprising first to fourth switches provided on the primary side and a fifth switch and a second inductor provided on the secondary side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A battery temperature control method comprising:
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determining that the temperature of the battery has been maintained below a normal operation temperature for a predetermined duration; decoupling a secondary side from a primary side of a non-contact transformer of an inverter in the energy storage system, the primary side including a winding having a first end and a second end; performing a charging operation by forming a charging current path through which a charging current generated by an inductance of the winding flows in a charging direction from a first end of the winding through the second end of the winding towards a first terminal of the battery; performing a discharging operation by forming a discharging current path through which a discharging current generated by the inductance of the winding flows in a discharging direction from a first end of the winding through the second end of the winding towards a second terminal of the battery; and alternatingly repeating charging and discharging operations until the temperature of the battery has been restored to the normal operation temperature. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification