Apparatus for detecting faults in battery system
AssigneeSamsung SDI Co., Ltd.
InventorJong-Hoon Kim
Life of this patent
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Abstract
An apparatus for detecting a fault in a battery system, the apparatus including: a voltage detector configured to receive a voltage signal from the battery system and to digitize the voltage signal to generate voltage data; a discrete wavelet transformer configured to receive the voltage data and to perform a discrete wavelet transformation of the voltage data to generate transformation data; a statistical processor configured to receive the transformation data and to process the transformation data to generate statistical data, the statistical data including an average value of the transformation data; and a fault diagnosing unit configured to detect the fault in the battery system based on the statistical data and to transmit a fault signal when the fault is detected.
Claims18
An apparatus for detecting a fault in a battery system, the apparatus comprising:
- a voltage detector configured to receive a voltage signal from the battery system and to digitize the voltage signal to generate voltage data;
- a discrete wavelet transformer configured to receive the voltage data and to perform a discrete wavelet transformation of the voltage data to generate transformation data;
- a statistical processor configured to receive the transformation data and to process the transformation data to generate statistical data, the statistical data comprising an average value of the transformation data;
- and
- a fault diagnosing unit configured to detect the fault in the battery system based on the statistical data and to transmit a fault signal when the fault is detected.
A method for detecting a fault in a battery, the method comprising:
- receiving a voltage signal from a battery system;
- digitizing the voltage signal to generate voltage data;
- performing a discrete wavelet transformation on the voltage data to generate transformation data;
- processing the transformation data to generate statistical data, the statistical data comprising an average value of the transformation data;
- analyzing the statistical data to detect the fault;
- and
- transmitting a fault signal when the fault is detected.
An energy storage system comprising:
- a power conversion system configured to convert a first power to a second power;
- a battery system configured to store and supply the second power, the battery system comprising:
- a plurality of battery cells coupled together;
- a terminal coupled to a first battery cell of the battery cells;
- a switch coupled to the terminal and the power conversion system;
- and
- a battery management system comprising:
- a voltage detector configured to receive a voltage signal from the battery cells and to digitize the voltage signal to generate voltage data;
- a discrete wavelet transformer configured to receive the voltage data and to perform a discrete wavelet transformation of the voltage data to generate transformation data;
- a statistical processor configured to receive the transformation data and to process the transformation data to generate statistical data, the statistical data comprising an average value of the transformation data;
- and
- a fault diagnosing unit configured to detect a fault in the battery system based on the statistical data and to transmit a fault signal when the fault is detected,
- wherein the switch is configured to couple the battery cells with the power conversion system according to the fault signal.
Dependencies are inferred from the claim text.