Power supply circuit based on multiple parallel input power supplies and power supply control method

Abstract

The invention discloses a power supply circuit based on multiple parallel input power supplies and a power supply control method. The power supply circuit comprises multiple parallel input power supplies and a control circuit, wherein each input power supply is connected to a low-voltage power supply capacitor decoupling circuit through a one-to-one corresponding BOOST circuit, the low-voltage power supply capacitor decoupling circuit is connected to a push-pull boost circuit, the push-pull boost circuit is connected to an output support circuit, and the output support circuit is used for supplying power to a load; and the control circuit is respectively connected with each BOOST circuit and the push-pull boost circuit. According to the invention, multiple different types of input power supplies are allowed to work simultaneously and support dynamic adjustment, that is, different input power supplies adopt corresponding closed-loop control modes, and bus voltage parameters are automatically adjusted. The power supply circuit has the advantages of being capable of adapting to input power supplies with different voltage parameters, optimizing the energy conversion efficiency, and being compatible with common household power storage and generation devices.

Description

technical field [0001] The invention relates to a power supply circuit and a power supply control method based on multiple parallel input power supplies. Background technique [0002] Electricity occasions such as field work, small mechanical operations, and tourism and camping often require mobile power supplies. Household power tools, electric bicycles, etc. often use supporting power batteries. These power supplies vary in composition, rated voltage, and limited current. [0003] To supply power to AC mobile electrical equipment or loads, the mobile power supply needs to be boosted and inverted. The traditional boost topology includes BOOST circuit, push-pull boost circuit and interleaved parallel BOOST boost circuit. Among them, the output current amplitude of the BOOST circuit is limited by the input power supply voltage, and the boost ratio and power output capability are both limited. For example, for the power battery used in electric tools, the input power volta...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the current mobile power supply circuit cannot meet the multi-channel parallel control

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