Pulse width modulation waveform output method, charging/discharging controller and storage medium

Abstract

The application provides a pulse width modulation waveform output method, a charging / discharging controller and a storage medium, and relates to the technical field of the charging / discharging field.The method is applied to the charging / discharging controller, and comprises the following steps: setting a first pin as a push-pull mode, and a second pin and a third pin as open-drain modes, and outputting the corresponding pulse signal, the complementary signal or the DC constant signal through the first pin, the second pin and the third pin, thereby enabling a second output end to skip to highlevel and maintain for the first preset duration after the first DC pulse signal is skipped as the low level, and then performing following mode output, or enabling the second output end to output thecomplementary output signal in complementary with the first DC pulse signal, thereby performing complementary mode output. Through the method provided by the application, the outputs of the followingmode and the complementary mode are accomplished, and the cost of the small power controller in the charging / discharging is reduced.

Description

technical field [0001] The present application relates to the technical field of charge and discharge control, in particular, to a pulse width modulation waveform output method, a charge and discharge controller, and a storage medium. Background technique [0002] The charge and discharge controller is a device that controls the charge and discharge of the battery in the power generation system. Taking the photovoltaic field as an example, the currently commonly used MPPT (full name in Chinese: Maximum Power Point Tracking, full name in English: Maximum Power Point Tracking) controller adopts an efficient step-down circuit structure and is designed based on the MPPT control algorithm. Compared with ordinary PWM (PulseWidth Modulation, Pulse Width Modulation) charging method can increase the utilization rate of solar system energy by 10%-30%. The MPPT controller usually adopts a synchronous rectification structure, based on a single-chip microcomputer outputting a set of PWM...

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Problems solved by technology

[0004] In view of this, the purpose of the embodiment of the present application is to provide a pulse width modulation waveform output method, a charge and discharge controller, and a storage medium, so as to improve the inability of the ARM chip in the prior art to output the following mode and the complementary mode at the same time. The problem of high cost of combining with DSP chips

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