Capacitor discharge control method and device, equipment and storage medium

Abstract

The invention provides a capacitor discharge control method and device, equipment and a storage medium, and the method comprises the steps: obtaining the voltage of a first capacitor and the voltage of a second capacitor, and obtaining a first voltage and a second voltage; according to the first voltage and the second voltage, determining an average duty ratio of the electrically-driven boost charging circuit; according to a preset current relationship, a duty ratio adjustment value for capacitance discharge of the first capacitor and the second capacitor is determined, and the duty ratio adjustment value is used for adjusting a B-phase duty ratio and a C-phase duty ratio in the electrically-driven boost charging circuit; the first capacitor and the second capacitor are subjected to capacitance discharge according to the average duty ratio and the duty ratio adjusting value, simultaneous discharge of the first capacitor and the second capacitor is achieved, the discharge speed is guaranteed, current control is stable, current impact is reduced, and on the basis that additional equipment does not need to be added, the cost is reduced, and the safety of the electrically-driven boost charging circuit is improved.

Description

technical field [0001] The present invention relates to the technical field of new energy vehicles, and in particular, to a capacitor discharge control method, device, equipment and storage medium. Background technique [0002] The emergence of new energy vehicles means that the development is becoming more and more modern, and it also reflects that the technology is becoming more and more advanced. New energy vehicles are an important part of the low-carbon economy. While easing the contradiction between energy supply and demand, it will also promote the sustainable development of the economy. With the development of the new energy vehicle industry, DC fast charging technology has become increasingly important and has become the main factor for users to consider when choosing new energy vehicles. For this reason, electric drive boost charging technology has emerged in the industry. Electric drive boost charging technology can charge 500V charging piles. After the voltage is...

AI Technical Summary

Problems solved by technology

[0005] This application provides a capacitor discharge control method, device, equipment and storage medium, so as to solve the problem that in the prior art, the resistance discharge method needs to add additional equipment, resulting in large circuit volume and high cost, while the motor discharge method cannot be realized The simultaneous discharge of two capacitors in the circuit leads to a technical problem of overcurrent risk in the circuit

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