Battery pack including a battery management system configured to control charging and discharging thereof

摘要

A battery pack including: a first terminal; a second terminal; a battery module coupled between the first terminal and the second terminal, the battery module having a state of charge; a sensor configured to measure a swelling of the battery module and to generate a swelling data value; and a battery management system configured to control a charging and a discharging of the battery module to reduce a swelling rate of the battery module or to correct the swelling of the battery module according to the swelling data value and the state of charge.

主权项

1. A battery pack comprising:
a first terminal; a second terminal; a battery module coupled between the first terminal and the second terminal, the battery module having a state of charge; a sensor configured to measure a swelling of the battery module and to generate a swelling data value; and a battery management system configured to control a charging and a discharging of the battery module to reduce a swelling rate of the battery module or to correct the swelling of the battery module according to the swelling data value and the state of charge, wherein the battery management system further comprises:
a swelling sensor configured to receive the swelling data value to determine whether a degree of swelling is greater than or equal to a swelling reference value;a range limiter configured to limit the state of charge of the battery module to be within a range between a charging limit and a discharging limit to reduce a swelling rate of the battery module, when the swelling data value is greater than or equal to the swelling reference value; anda corrector configured to discharge the battery module when the state of charge is greater than or equal to the charging limit and to charge the battery module when the state of charge is less than or equal to the discharging limit, repeatedly, to correct the swelling of the battery module, when the swelling data value is greater than or equal to the swelling reference value.