Site Power Management Module

Abstract

The invention relates to a station power management module which comprises at least one power input circuit connected with an external power source, at least one load output circuit connected with a load and a storage battery charging and discharging circuit connected with a storage battery. The load output circuit is provided with a first MOS TRANSISTOR controlling the load output circuit to be connected and disconnected and a control device controlling the first MOS TRANSISTOR to be connected and disconnected. A storage battery connecting circuit is provided with a second MOS TRANSISTOR controlling the storage battery connecting circuit to be connected and disconnected and a PWM signal controller controlling the second MOS TRANSISTOR to be connected and disconnected. The power input circuit and the load output circuit are connected through a first lead. The storage battery charging and discharging circuit is connected with the first lead through a second lead. According to the station power management module, after the storage battery is fully charged, the second MOS TRANSISTOR is disconnected, and at the moment when the external power source is powered off, power can be supplied to the load by the storage battery through a diode inside the second MOS TRANSISTOR; when a discharging current of the storage battery is detected by an external circuit, the second MOS TRANSISTOR is connected, electric energy loss caused by diode connection voltage drop is reduced, the switch of the power source is continuous and seamless, and therefore the instant power outage of the load is avoided.

Description

technical field [0001] The invention relates to the technical field of power management systems, in particular to a station power management module, which is applicable to public bicycle stations. Background technique [0002] As an integral part of urban transportation, public bicycles have many advantages. The construction site of the public bicycle rental site is on both sides of the road near the station, residential area, shopping mall, etc. The public bicycle rental site has two load devices that need power supply, one is the management terminal, and the other is the bicycle lock pile. There is no fixed and reliable power supply. In order to ensure the maximum normal operation of the equipment, the equipment must have the functions of using street lamp power, solar panel power, and battery power. In the prior art, the power supply is single, and it is impossible to effectively protect and charge the battery, such as overcharge protection, overdischarge protection, con...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the technical problem that the bicycle station cannot effectively charge and discharge the battery in the prior art, and to provide a station power management module, which can realize seamless switching of multi-channel power supply, and can effectively Prevent the battery from overcharging, over-discharging, and realize constant current and constant voltage charging to protect the battery

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