Power supply circuit of BBU internal control circuit in cold standby mode

• Main Author: CUI XUETAO
• Format: Patent
• Language: Chinese; English
• Published: 06.11.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a power supply circuit of a BBU internal control circuit in a cold standby mode. The power supply circuit comprises a BBU unit, a PSU power supply unit, a first power supply system ORING and a second power supply system ORING. The BBU unit comprises a BBU power supply chip, a third MOS transistor, a second MOS transistor, a first MOS transistor, a metering chip, a microcontroller, a DC-DC unit, a first diode, a second diode and a voltage stabilizing diode. The working principle is simple, and the power failure risk of the BBU control circuit can be avoided on the premise of not losing the electric quantity of a battery cell, so that the possibility of data loss to a user is avoided; double-circuit power supply of the BBU control circuit by the PSU and the BBU cellsis realized, the PSU is preferentially used for power supply, and cell loss is avoided. 本发明公开了一种冷备模式下BBU内部控制电路的供电电路，包括BBU单元、PSU电源单元、第一电源系统ORING和第二电源系统ORING，BBU单元包括BBU电源芯片、第三MOS管、第二MOS管、第一MOS管、计量芯片、微控制器、DC-DC单元、第一二极管、第二二极管和稳压二