Apparatus and method for detecting defect of battery pack
AssigneeLG Energy Solution, Ltd.
InventorsYoung-Joong KIM, Jin-Hyun LEE
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Abstract
The present disclosure relates to an apparatus and method for detecting a defect of a battery pack, and more particularly, to an apparatus and method for detecting a defect of a capacitor provided in the battery pack. According to the present disclosure, since a defect of a capacitor is detected using a noise signal, the defect of the capacitor in an assembled battery pack may be easily detected. In addition, since the present disclosure includes a compact circuit structure for noise signal output, noise signal filtering and voltage measurement, the cost for detecting a defect of the capacitor may be reduced.
Claims15
An apparatus for detecting a defect of a battery pack, comprising:
- a voltage measurer configured to measure a voltage of a battery cell of the battery pack through a sensing line;
- a filter unit having a capacitor corresponding to the battery cell and configured to filter a noise included in the voltage measured by the voltage measurer through the capacitor with respect to the corresponding battery cell;
- a signal generator connected to the filter unit through a line having a noise resistor and configured to output a noise signal having an output frequency corresponding to frequency information to the filter unit when a control signal having the frequency information is input;
- and
- a controller connected to the voltage measurer and the signal generator and configured to send the control signal having the frequency information to the signal generator, receive the voltage value of the battery cell measured by the voltage measurer and detect a defect of the capacitor included in the filter unit based on the received voltage value of the battery cell and a preset reference value, the controller being a hardware embedded processor.
A method for detecting a defect of a battery pack, comprising:
- a noise signal outputting step of outputting a noise signal having an output frequency corresponding to frequency information, when a control signal including the frequency information is input;
- a voltage measuring step of measuring a voltage of a battery cell of the battery pack at which a partial frequency band is filtered, after the noise signal is output;
- and
- a defect detecting step of detecting a defect of a capacitor corresponding to the battery cell based on the voltage value measured in the voltage measuring step and a preset reference value.
Dependencies are inferred from the claim text.