A power-on circuit, battery backup unit and storage server system

Abstract

The present invention provides a power-on circuit, a battery backup unit, and a storage server system, wherein the power-on circuit includes: an activation circuit and a delay circuit, wherein the first end of the first controlled switch of the activation circuit is connected to the first The anode of the diode is connected, the cathode of the first diode is connected with the control terminal of the corresponding charging circuit of the battery backup unit; one end of the first resistor of the delay circuit is connected with the second end of the first controlled switch, and the first resistor The other end of the capacitor is connected to the control end of the first controlled switch and one end of the capacitor, and the other end of the capacitor is connected to the first end of the first controlled switch and grounded; when the battery backup unit is inserted into the target object, the first controlled The second end of the switch is connected to the charging power source corresponding to the battery backup unit. Therefore, the activation of the battery backup unit is automatically realized without relying on software control, the logic complexity is reduced, the stability and reliability are improved, and the normal operation of the battery backup unit will not be affected.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a power-on circuit, a battery backup unit and a storage server system. Background technique [0002] In the storage server system, the fuel gauge chip will make the battery backup unit (Battery Backup Unit, referred to as BBU) enter shutdown mode after a period of time offline (one of the working modes of the fuel gauge chip, turning off most functions to reduce power consumption) In this mode, the fuel gauge chip stops communicating and all MOSFETs that control charging and discharging are turned off to reduce battery loss. When the BBU is reinserted into the system, it needs to be activated for normal charge and discharge management. [0003] In the prior art, the solution of powering on and activating the BBU is mainly to send a charging command through the system, so that the level of the PACK pin of the fuel gauge chip is raised to exceed the set start-up voltage. The dis...

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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a power-on circuit, a battery backup unit, and a storage server system to overcome the need to rely on system software to detect the BBU presence signal through an interrupt for the activation of charging and discharging of the battery backup unit in the prior art The way of level hopping is realized, which causes the problem of waste of system resources

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