Abnormality diagnosis system and method for a battery cell
AssigneesHyundai Motor Company, Kia Corporation
InventorSung Ho Kim
Life of this patent
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Abstract
A system diagnoses abnormality of a battery cell of a battery. The system includes a plurality of battery cells and a sensing board connected to the plurality of battery cells. The system further includes a plurality of switches provided between each battery cell and the sensing board and configured to electrically connect or disconnect each battery cell and the sensing board. The system further includes a controller for measuring voltage of any one battery cell by electrically connecting the one battery cell among the plurality of battery cells to the sensing board and disconnecting the remaining battery cells. The controller also diagnoses each of the plurality of battery cells based on voltage drop in each battery cell.
Claims15
A system for diagnosing abnormality of a battery cell, the system comprising:
- a battery having a plurality of battery cells;
- a sensing board connected to the plurality of battery cells;
- a plurality of switches provided respectively between each cell of the plurality of battery cells and the sensing board and configured to electrically connect or disconnect each cell and the sensing board;
- and
- a controller, wherein the controller is configured to
- measure voltage of any one battery cell of the plurality of battery cells by electrically connecting the one battery cell to the sensing board and disconnecting remaining battery cells of the plurality of battery cells from the sensing board, and
- diagnose each cell of the plurality of battery cells based on a voltage drop in each cell.
A method of diagnosing abnormality of a battery cell of a battery, the method comprising:
- measuring, by a controller, voltage of any one battery cell among a plurality of battery cells of the battery by electrically connecting the one battery cell to a sensing board and disconnecting remaining battery cells of the plurality of battery cells from the sensing board;
- calculating voltage drop in the one battery cell;
- and
- diagnosing the one battery cell based on the voltage drop in the one battery cell.
Dependencies are inferred from the claim text.