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US 2025/0168034 A1Published application
Battery management apparatus and method of setting can baud rate
AssigneeSamsung SDI Co., Ltd.
InventorYoung Dong SEO
Life of this patent
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Abstract
A battery management apparatus includes an interface circuit configured to perform controller area network (CAN) communication with an external device through a CAN bus line, and a micro controller unit (MCU) configured to detect an error in a CAN message frame received from the external device through the interface circuit, and to set a CAN baud rate based on whether the error is detected in the CAN message.
Claims20
A battery management apparatus comprising:
- an interface circuit configured to perform controller area network (CAN) communication with an external device through a CAN bus line;
- and
- a micro controller unit (MCU) configured to detect an error in a CAN message frame received from the external device through the interface circuit, and to set a CAN baud rate based on whether the error is detected in the CAN message.
A method of setting a controller area network (CAN) baud rate, comprising:
- in response to a battery management apparatus waking up, initializing, by a micro controller unit (MCU), a CAN baud rate to a most recently used CAN baud rate;
- diagnosing, by the MCU, whether an abnormality occurs in a battery pack based on battery status data;
- in response to no abnormality occurring in the battery pack, turning, by the MCU, a switch on to receive a CAN message frame from an external device through a CAN bus line;
- and
- checking, by the MCU, whether an error is detected in the CAN message frame and setting the initialized CAN baud rate as a final CAN baud rate when no error is detected.
2 more elements
A method of setting a controller area network (CAN) baud rate, comprising:
- diagnosing, by a micro controller unit (MCU), whether an abnormality occurs in a battery pack based on battery status data;
- in response to no abnormality occurring in the battery pack, turning, by the MCU, a switch on to receive a CAN message frame from an external device through a CAN bus line;
- calculating, by the MCU, interrupt occurrence time intervals in response to an interrupt occurring based on reception of the CAN message frame;
- calculating, by the MCU, a baud rate based on the interrupt occurrence time intervals for a certain period of time;
- acquiring, by the MCU, a baud rate closest to the calculated baud rate from a baud rate table and initializing the acquired baud rate to a CAN baud rate;
- and
- checking, by the MCU, whether an error is detected in the CAN message frame received from the external device at the initialized CAN baud rate and setting the initialized CAN baud rate as a final CAN baud rate in response to no error being detected.
4 more elements
Dependencies are inferred from the claim text.