2results about How to "Eliminate offset effects" patented technology

The embodiment of the application discloses a low-voltage sampling and holding circuit, a control method thereof and a converter, relates to the technical field of integrated circuit design, and the low-voltage sampling and holding circuit comprises a sub-threshold leakage suppression module, a double-gate voltage bootstrap module, a dynamic substrate biasing module, a core sampling tube, a pseudo switch tube and a clock control unit. The sub-threshold leakage suppression module comprises a charge redistribution capacitor, and is used for generating a negative voltage in a holding stage. The double-gate voltage bootstrap module is used for lifting the gate voltage of the core sampling tube in a sampling stage. The dynamic substrate biasing module is used for dynamically switching the substrate potential of the core sampling tube and key devices. The core sampling tube comprises a first short channel MOS tube and a second short channel MOS tube connected in series. The clock control unit is used for outputting a first clock signal and a second clock signal, and controlling the modules to work in cooperation in the sampling stage and the holding stage. The high linearity sampling and low leakage holding in the low-voltage scene are synergistically optimized.

The application discloses a real-time SOC detection and diagnosis method and system for power batteries, relates to the technical field of pre-diagnosis, and comprises the following steps: generating a normalized image of a power battery pack, performing mask marking on the normalized image to obtain a region mask; determining the directions of line segments corresponding to the normalized image based on the region mask to obtain direction vectors of the line segments; performing anti-gravity bridge connection screening on all the line segments based on the direction vectors of the line segments to obtain a bridge connection line bundle set; generating a correction amount based on the bridge connection line bundle set, correcting a real-time SOC value corresponding to the power battery based on the correction amount to obtain a corrected SOC value. The application improves the reliability of a real-time SOC result in a structural abnormal scenario.