Storage battery common manager based on digital control

Abstract

The present invention relates to a storage battery common manager based on digital control. The manager comprises a box body, an SWD download interface, a sampling interface, driving interfaces, a serial screen interface, a RS232 test interface, an upper computer, a communication interface and a CAN communication interface connected with an embedded microcontroller are arranged at the external portion of the box body, and the box body is internally provided with a control circuit board, a four-way PWM driving circuit boards and four-way mosfet circuit branches through fasteners; each mosfet circuit branch comprises mosfet being reversely connected in series and being connected in parallel with a diode in the internal portion of the mosfet, the PWM driving circuit boards respectively drive each mosfet circuit branch through four driving interfaces, mosfet drains are respectively connected with cathodes of four storage batteries through output terminals, the output ends of each two mosfet circuit branches are connected to form a connecting-out terminal, and two connecting-out terminals are connected with the cathode of a switching power supply. The storage battery common manager based on the digital control utilizes a single-chip microcomputer to perform digital control, the driving mode of the mosfet employs PWM driving, and the regulation of the PWM duty ratio is performed to realize pulse charging and discharging.

Description

technical field [0001] The invention relates to effectively avoiding problems such as circulating current and unbalanced charge and discharge caused by parallel connection of batteries by controlling the charge and discharge states of each battery branch under the background of capacity expansion of communication base stations, and belongs to the field of battery management, in particular to a digital Controlled battery sharing manager. Background technique [0002] As human society enters the information age, mobile communication methods are becoming more and more popular, and the communication business volume is increasing rapidly. In the entire communication system, the base station plays an irreplaceable role as the intermediary of information transmission. If the base station The insufficient power supply of the original power supply system will affect the normal progress of communication. How to ensure the reliable operation of the base station determines whether the c...

AI Technical Summary

Problems solved by technology

However, direct parallel connection of two groups of battery packs with different capacities, different types, different brands, and different periods may cause problems such as circulation between branches and unbalanced charging and discharging currents. Therefore, a device is needed to regulate the charging of batteries in each branch. Discharge state, so that the current of each branch can be charged and discharged according to the actual capacity

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