Battery charging power system

Abstract

The invention discloses a battery charging power system. The battery charging power system comprises a direct current power source, a battery module and a charging management module, wherein the charging management module comprises an input protection unit, a soft start switch unit, a DC / DC (direct-current / direct-current) conversion unit and a battery in-situ detection unit; the input protection unit is connected between the direct current power source and the soft start switch; the battery in-situ detection unit is connected with the battery module and a first control terminal of the soft start switch unit to send a first control signal to the soft start switch unit, and the soft start switch unit starts up or shuts off the DC / DC conversion unit according to the first control signal. Compared with the prior art, the charging management module comprises the input protection unit and the battery in-situ detection unit, and the input protection unit can protect the direct current power source, so that safety and reliability of the charging process are improved; the battery in-situ detection unit can detect the in-situ state of the battery module and shut off the DC / DC conversion unit when the battery module is not in the position, and accordingly, energy waste is effectively avoided.

Description

technical field [0001] The present invention relates to the technical field of battery management, and more specifically relates to a battery charging power supply system. Background technique [0002] At present, whether it is digital control or analog control, the charging of the battery is composed of two independent parts: one is the DC power supply, which provides DC energy for charging the battery (the battery can only be charged with DC energy); the other is the DC power supply for the battery. Carry out the management and protection part of charging. The generation of DC power generally includes AC / DC high-frequency switching power supply, linear power supply, solar energy and other DC power supplies, among which high-frequency switching power supply is the main method to provide DC power supply for battery charging. [0003] The Chinese Patent No. 200720076436.4 and the patent application titled "Charging Management Control Circuit for Battery Chargers" disclose a ...

AI Technical Summary

Problems solved by technology

[0004] The above technical solution can realize the conversion of AC current into DC current and directly charge the battery, but since the main circuit has no switching device to cut off the charging circuit and there is no current limiting or output short circuit protection device, the system lacks security; in addition, the above solution charging The control process is complicated and it is impossible to determine whether the rechargeable battery is in place, so there is a problem of energy waste when the rechargeable battery is not in place

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