Design of charging station and optimization of oscillation circuits for new energy vehicles

Abstract

In order to ensure good charging performance of new energy vehicles, the charging station was designed and the relevant oscillation circuits were optimized. The function and structure of the charging station was determined, and through a hierarchical framework, not only the success rate factor could be corrected, but also a resonant converter was combined to achieve efficient charging over a wide battery voltage range. The linear charging management chip was adopted, which integrated high-precision constant voltage source, temperature monitoring, charging status display, and battery charging completion termination function. The changes in excitation current and switching frequency during the charging process were studied, and the optimization basis for the relevant circuits was determined. A trigger was added to the input end of the oscillator to filter the input signal, which improved the accuracy of the RC oscillator cycle. The clock reference oscillation circuit and stable voltage power supply circuit were optimized. In order to verify the effectiveness of the proposed electronic control design, a hardware platform for the test of DC output characteristics was built. The results indicate that the output voltage waveform can effectively meet the working requirements.