Battery diagnosis device and method
AssigneesHyundai Motor Company, Kia Corporation
InventorHyun Soo PARK
Life of this patent
Estimating the term…
Abstract
A battery diagnosis apparatus may include a plurality of batteries, sensing units matched with the batteries on a one-to-one basis to detect a voltage or an State of charge (SOC) value of each of the batteries, and a processor. The processor is configured to determine a largest SOC deviation between a first battery and a second battery selected among the batteries, obtain a largest voltage deviation between the first battery and the second battery based on the largest SOC deviation, set a threshold value proportional to the largest voltage deviation, and diagnose whether a voltage deviation between the first battery and the second battery is abnormal by comparing a measured voltage deviation between the first battery and the second battery with the threshold value.
Claims20
A battery diagnosis apparatus comprising:
- a plurality of batteries:
- sensing units matched with the batteries on a one-to-one basis to detect a voltage or an State of charge (SOC) value of each of the batteries;
- and
- a processor configured to:
- determine a largest SOC deviation between a first battery and a second battery selected among the batteries,
- obtain a largest voltage deviation between the first battery and the second battery based on the largest SOC deviation,
- set a first threshold value proportional to the largest voltage deviation, and
- diagnose whether a voltage deviation between the first battery and the second battery is abnormal by comparing a measured voltage deviation between the first battery and the second battery with the first threshold value.
A battery diagnosis method comprising:
- determining, by a processor, a largest SOC deviation between a first battery and a second battery selected among the batteries;
- obtaining, by the processor, a largest voltage deviation between the first battery and the second battery based on the largest SOC deviation;
- setting, by the processor, a first threshold value proportional to the largest voltage deviation;
- and
- diagnosing, by the processor, whether a voltage deviation between the first battery and the second battery is abnormal by comparing a measured voltage deviation between the first battery and the second battery with the first threshold value.
Dependencies are inferred from the claim text.