Method and system for detecting faults of power batteries

• Main Author: HE ZHANGCHUN
• Format: Patent
• Language: Chinese; English
• Published: 29.12.2010
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The invention provides a method and a system for detecting faults of power batteries. The system comprises a voltage detection circuit, a window comparison circuit, a control unit, a time control unit, an analog-to-digital conversion circuit and a control circuit, wherein the voltage detection circuit detects a voltage value of a single battery; the window comparison circuit compares the detectedvoltage values respectively and judges whether the detected voltage values fall in the first threshold value range; the control unit controls an actuator to cut off a charge-discharge circuit or givean alarm when the voltage value of any single battery does not fall in the first threshold value range; the time control unit controls the preset interval time for voltage detection; when the voltagevalues fall in first threshold value range, the analog-to-digital conversion circuit converts the voltage values into voltage digital signals to be inputted in a temporary storage module, and an MCU secondary comparison unit se