Battery pack control apparatus and method for fixing failure of relay
AssigneeSamsung SDI Co., Ltd.
InventorJong Hyun Weon
Life of this patent
Estimating the term…
Abstract
A battery pack control apparatus for fixing a failure of a relay includes a battery module including a plurality of battery cells, the relay that is configured to selectively conduct or block an output current of the battery module, a current sensor configured to detect the output current of the battery module, a voltage sensor configured to measure voltages at both ends of the relay, and a processor configured to control the relay and to detect a state of the relay based on at least one of the current detected by the current sensor or the voltages measured by the voltage sensor, and in response to determining that the relay malfunctions, to check and fix the relay.
Claims18
A battery pack control apparatus for fixing a failure of a relay, the battery pack control apparatus comprising:
- a battery module comprising a plurality of battery cells;
- the relay that is configured to selectively conduct or block an output current of the battery module;
- a current sensor configured to detect the output current of the battery module;
- a voltage sensor configured to measure voltages at both ends of the relay;
- and
- a processor configured to control the relay and to detect a state of the relay based on at least one of the output current detected by the current sensor or the voltages measured by the voltage sensor, and in response to determining that the relay malfunctions, to check and fix the relay,
- wherein the processor is configured to check the state of the relay based on the voltages in response to a vehicle being in an operational state, and to check the state of the relay based on the output current in response to the vehicle being in a stopped state.
A battery pack control method for fixing a failure of a relay, the method comprising:
- controlling, by a processor, a relay configured to be opened in response to a state or request signal of a battery module;
- detecting, by the processor, a state of the relay based on at least one of a current and a voltage;
- checking and fixing, by the processor, the relay in response to determining that the relay malfunctions;
- stopping, by the processor, the checking and fixing in response to determining that the relay operates normally while the checking and fixing of the relay are performed;
- and
- determining, by the processor, that the relay has a permanent failure in response to determining that the relay has a failure,
- wherein the checking and fixing of the relay comprises:
- rechecking a state of the relay in response to the voltages in response to determining that the relay is normal based on the current;
- and
- fixing the relay according to a rechecking result.
Dependencies are inferred from the claim text.