CPC H02J 7/00304 (2020.01) [H02H 9/001 (2013.01); H02J 7/0036 (2013.01)] | 19 Claims |
1. A charging system, comprising:
a battery pack including at least one battery cell and a switch connected in series between first and second pack terminals, and a battery management module connected to a data terminal; and
a charger including a connector configured to detect a connection with the battery pack, a communicator configured to communicate with the battery management module through the data terminal, and a controller configured to control charging of the battery pack through the first and second pack terminals,
wherein the controller of the charger is configured to:
output a wake-up voltage between the first and second pack terminals to activate the battery management module when the connection with the battery pack is detected through the connector;
receive data indicating a value of a battery voltage from the battery management module through the communicator;
determine a charging start voltage based on the value of the battery voltage;
output the charging start voltage between the first and second pack terminals; and
start charging the battery pack by the switch being turned on by the battery management module after outputting the charging start voltage.
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