Veneer power source backup method and system

Abstract

The invention relates to a veneer power backup method and a system thereof. The veneer power backup method comprises the following steps. Firstly, voltage is led to the veneer through a bus; then the lead-in voltage is converted into the required low voltage through the DC / DC on the veneer; at the same time, a backup power supply is arranged and is and led to each veneer. When the veneer power supply works normally, the backup power loop is cut off. When the veneer power is ineffective, the backup power loop is shut down. The veneer power supply backup system comprises a high-low-voltage bus, a backup power supply, a DC / DC power supply and a diode D1 connected with the DC / DC power in series. The system is characterized in that it also comprises a detection switch circuit. When the veneer works normally, the detection switch circuit keeps the power backup in open-circuit state. When the veneer power is ineffective, the detection switch circuit is communicated with the backup power circuit and supplies power for the business veneer. The invention decreases the backup power supply and greatly saves cost.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for backing up a service single-board power supply and a single-board power supply backup system thereof. technical background [0002] In the communication field, the uninterrupted power supply of the communication system is the most basic guarantee for the normal and stable operation of the communication system. The MTBF of the secondary module power supply used in the existing communication system is generally between 1500Khours-5000KHours. Although the secondary module power supply has high reliability, in order to ensure uninterrupted power supply in the event of an accident, the industry usually designs a backup system in the system to back up the secondary power supply in order to When a certain (some) module power fails, the normal operation of the system is guaranteed. [0003] In the prior art, common methods for protecting and backing up the power supply are as foll...

AI Technical Summary

Problems solved by technology

[0009] 1) The power of the backup power supply is relatively large, the cost is relatively high, and the heat dissipation design is also very difficult

[0010] 2) Due to the large current passing through the low-voltage busbar on the backplane, it is difficult to solve the problem of large voltage drop on the low-voltage busbar on the backplane, which makes it impossible to apply to low-voltage and high-current systems

[0011] 3) The backup power supply is also in working condition at ordinary times, and the load is heavy, which reduces its own reliability

[0013] 1) Due to the excessive board space occupied by the power board, the configuration of the business board is reduced, which affects the integration of the system

[0014] 2) The reliability of the centralized power supply mode is low

[0015] 3) It is difficult to solve the problem of large voltage drop on the low-voltage busbar on the backplane, and cannot be applied to low-voltage, high-current systems

[0016] 4) The backup power supply is usually in the working state, which makes the load heavier, thereby reducing its own reliability

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