4results about How to "Extend system life" patented technology

The application provides a multi-stack fuel cell hydrogen energy comprehensive power supply system cooperative optimization method and system, optimal working points of each stack are obtained through offline calculation; source and load are predicted in a prediction time domain, a first-stage optimization is performed with the sum of working costs in the prediction time domain and optimal working point tracking performance indexes of each stack being minimum as an objective, and optimal outputs of each device in the prediction time domain are obtained; wherein the working costs include: system device operation and maintenance costs, wind and light abandonment penalty costs, grid interaction costs and stack performance degradation costs; source and load are predicted in a control time domain, a second-stage optimization is performed with the optimal output of the first stage as a benchmark value, with the sum of deviations of the optimal output of the second stage from the benchmark value and output fluctuations of each stack being minimum as an optimization objective function, and final optimal scheduling results are obtained; the application improves the system economy, and improves the overall working efficiency of the stack and the system life.

The invention relates to the technical field of integrated circuits, in particular to a three-dimensional integrated chip power management system, electronic equipment and a three-dimensional integrated chip power management method. The side wall annular power supply bus surrounds the side wall area of the chip stacking body to form a closed annular conductor; and a plurality of tap distribution units arranged on the side wall annular power supply bus, wherein the plurality of tap distribution units are used for electrically connecting the power supply network of each layer of chip in the chip stack to the side wall annular power supply bus. Therefore, the closed annular power supply conductor is constructed on the side wall of the three-dimensional integrated chip stacking body and is connected with the packaging shell in parallel, the decoupling capacitor is integrated, and segmented monitoring control is performed, so that the problems of resistance voltage drop, transient inductance noise, electromagnetic interference, insufficient power network reliability and the like caused by traditional TSV longitudinal power supply in a high-density 3D IC are solved; and the power supply integrity and reliability of the three-dimensional integrated chip are improved, and the system life is prolonged.

This invention relates to power management technology for new energy vehicles, and discloses an intelligent charging system and method for low-voltage batteries in new energy vehicles, comprising the following steps: S1. Real-time acquisition of operating data of the low-voltage battery and vehicle status data; S2. Calculation of the current state of health (SOH) of the low-voltage battery based on historical data; S3. Establishment and updating of a personalized power consumption behavior model for the vehicle, obtaining a load feature vector characterizing its idle power consumption mode; S4. Based on the current health state, the load feature vector, and the current voltage, prediction of the voltage change curve of the low-voltage battery over a future period using a voltage decay prediction model. Based on the load used by the low-voltage battery in different vehicles, a strategic charging solution is generated for the vehicle, while optimizing the energy flow management of the entire vehicle. By optimizing the timing of charging and proactive, predictive charging, the availability and efficiency of vehicle charging applications are improved.

The invention discloses a resonant dual-active bridge converter and a control method, and the converter comprises a primary full-bridge circuit, a secondary full-bridge or half-bridge circuit, a transformer, and an LC resonant network composed of a resonant inductor and a resonant capacitor which are connected in series. The control method comprises the following steps: acquiring parameters of an input voltage V1, an output voltage V2, a transmission power P, a transformer turn ratio N, a resonant inductance Lm and a resonant capacitance Cr of the converter; and calculating a primary fundamental wave equivalent voltage and a secondary fundamental wave equivalent voltage, and calculating an inner phase shift angle alpha between a first bridge arm and a second bridge arm in the primary full-bridge circuit through the primary fundamental wave equivalent voltage and the secondary fundamental wave equivalent voltage. The LLC converter has the beneficial effects that the inherent defects that the gain range of a traditional LLC converter is narrow (generally only 0.8-1.2) and the circulating current is sharply increased and the efficiency is sharply reduced when the voltage is seriously mismatched in the traditional phase-shifting DAB are fundamentally overcome.