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Device being capable of achieving AC and DC power supply switching

A power supply switching, AC power grid technology, applied in circuit devices, electrical components, emergency power supply arrangements, etc., to achieve the effect of improving power supply reliability, low cost, and enhancing product competitiveness

Inactive Publication Date: 2015-10-28
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a device capable of switching between AC and DC power supplies in view of the current needs and the deficiencies in the development of the prior art

Method used

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  • Device being capable of achieving AC and DC power supply switching

Examples

Experimental program
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Embodiment

[0016] A device capable of switching between AC and DC power supplies described in this embodiment includes a PCB circuit board, the PCB circuit board adopts a 1U space structure, and a charger, a control circuit and an AC circuit board are arranged on the PCB circuit board. side and DC side switches; wherein, the output end of the charger is connected to a control circuit for power supply, and the control loop controls the connection between the AC side and the DC side switch;

[0017] The charger adopts a one-phase AC bus voltage, and after PFC and DC-DC conversion, supplies power to the control loop; the control loop detects the AC and DC input conditions, judges and drives the switch on the AC side and the DC side, and ensures that the control loop The output terminal realizes uninterrupted voltage power supply; the AC side and DC side switch: Since the device needs to be compatible with single-phase 220V input and three-phase five-wire 380V input, the switches of the three...

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Abstract

The invention discloses a device being capable of achieving AC and DC power supply switching, and relates to the AC and DC switching line design technology. The device comprises a PCB. A charger, a control loop, an alternating current side and direct current side switch are arranged on the PCB. The input end of the charger is connected with an AC power grid, and the output end of the charger is connected with the control loop for power supply. The control loop controls and connects the alternating current side and direct current side switch. The charger supplies power for the control loop through PFC and DC-DC conversion. The control loop detects alternating current and direct current input conditions, and determines and drives the alternating current side and direct current side switch. The device can meet server power supply demands and achieves AC / AC power supply switching, and the power supply system cost is lowered greatly.

Description

technical field [0001] The invention relates to the circuit design technology for switching between AC power and DC power, in particular to a device capable of switching between AC and DC power supplies. Background technique [0002] With the rapid development of the Internet economy, the status of the server has been significantly improved. The power supply of the server is an important guarantee point for the operation of the server, and its reliability has attracted much attention. [0003] At present, the power supply of the computer room is mainly supplied by UPS (uninterruptible power supply). The battery supplies the power required by the load to maintain normal production; when the load is seriously overloaded due to production needs, the grid voltage is rectified to directly supply power to the load. Although the power supply of UPS can meet the functional requirements of many customers, its expensive price has become one of the factors that prevent it from being u...

Claims

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Application Information

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IPC IPC(8): H02J9/06
Inventor 鞠增伟滕学军高鹏飞
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD