Hysteresis type battery low voltage detection circuit

• Main Author: QU PENGWEI
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model relates to the technical field of battery detection, in particular to a hysteresis type battery low-voltage detection circuit, which comprises a low-voltage detection circuit, a voltage detection circuit, a driving circuit and a hysteresis feedback unit, and is characterized in that the low-voltage detection circuit acquires detection voltage VCC from a detected battery and outputs a first control signal to the voltage detection circuit; the voltage detection circuit outputs a second control signal to the driving circuit, the driving circuit outputs a detection signal BATDET to the outside, and the hysteresis feedback unit feeds back the detection signal to the voltage detection circuit to be superposed with the first control signal. The circuit provided by the utility model has a hysteretic characteristic, can effectively eliminate low voltage detection misjudgment caused by output voltage fluctuation due to internal resistance increase when the electric quantity of the battery is relativel