SYSTEM AND METHOD FOR OPERATING A DUAL BATTERY SYSTEM
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United States of America Patent
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Jun 10, 2021
app pub date -
Jun 4, 2018
filing date -
Jun 15, 2017
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Abstract
A method for a battery system may include applying a charge voltage to a first battery and a second battery electrically connected in parallel, diverting a portion of the charge voltage in excess of a threshold voltage from all battery cells of the second battery to a heater coupled externally to the second battery, and transferring heat from the heater to the second battery, the heat generated from the portion of the charge voltage. In this way, degradation of the second battery can be reduced during battery charging, especially at colder temperatures.
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