CN104331142B - Integrated computer power loss protection power supply - Google Patents

Abstract

A kind of integration computer power-off protection power supply of the present invention, including integrated switch power module, DC-ATX power module and Time delay circuit on a circuit board and external accumulator；Time delay circuit includes the time-delay relay being connected in parallel on switch power module voltage output end and triggers Guan Bi branch road, the instantaneous contacts of time-delay relay is parallel with relay normally open contact K2, relay normally open contact K2 and computer starting switch in parallel, trigger in Guan Bi branch road and be in series with diode VD2, relay normally closed switch K1 and relay coil K2, diode VD2 is by the voltage output end of switch power module positive voltage directional relay normally closed switch K1 one-way conduction, it is parallel with electric capacity C2 after the series connection of relay normally closed switch K1 and relay coil K2, relay coil K1 is connected between switch power module voltage output end both positive and negative polarity.Volume of the present invention is little and is desirably integrated into device interior, it is possible to effectively protection computer system and data.

Description

Integrated computer power loss protection power supply

technical field

The invention relates to an integrated computer power-off protection power supply.

Background technique

At present, UPS uninterruptible power supply is often used to protect the computer from power failure. The UPS uninterruptible power supply needs to be connected to the computer through a serial port or a USB interface, and the system program needs to communicate with the computer. Many computers are equipped with different types of systems. There is a situation that the UPS uninterruptible power supply is not compatible with the computer system, and the UPS uninterruptible power supply can only maintain power supply for a certain period of time and shut down in the event of a power failure, but cannot automatically turn on the computer after the power supply is restored. UPS uninterruptible power supply is generally relatively large in size, takes up a large space, and is expensive.

Contents of the invention

In order to solve the above technical deficiencies, the present invention provides an integrated computer power-off protection power supply with small volume and good effect on computer protection.

The present invention is achieved through the following measures:

An integrated computer power-off protection power supply of the present invention comprises a circuit board integrated

The switching power supply module, DC-ATX power supply module, trigger delay circuit and external battery; the voltage output terminal of the switching power supply module is connected to the voltage input terminal of the DC-ATX power supply module, and the voltage output terminal of the DC-ATX power supply module It is connected with a computer motherboard interface; the battery is connected in parallel between the voltage output terminal of the switching power supply module and the voltage input terminal of the DC-ATX power supply module, and a diode VD1 is connected between the positive pole of the battery and the positive pole of the voltage output terminal of the switching power supply module. VD1 is unidirectionally conducted from the positive pole of the voltage output terminal of the switching power supply module to the positive pole of the battery;

The trigger delay circuit includes a delay relay connected in parallel to the voltage output end of the switching power supply module and a trigger closed branch, the instantaneous contact of the delay relay is connected in parallel with a relay normally open contact K2, and the relay normally open contact K2 is connected to the computer The start switch is connected in parallel, and the trigger closed branch is connected in series with a diode VD2, a relay normally closed switch K1 and a relay coil K2, and the diode VD2 is unidirectionally conducted from the positive pole of the voltage output terminal of the switching power supply module to the relay normally closed switch K1, and the relay The normally closed switch K1 and the relay coil K2 are connected in series, and then a capacitor C2 is connected in parallel, and the relay coil K1 is connected between the positive and negative poles of the voltage output terminal of the switching power supply module.

The relay coil K1 is connected in series with a diode VD3, and the diode VD3 conducts unidirectionally from the positive pole of the voltage output terminal of the switching power supply module to the relay coil K1, and the relay coil K1 is connected in parallel with a capacitor C1.

The beneficial effect of the present invention is: the volume is small and can be integrated into the device, and the computer can be automatically shut down when the power is cut off, and the computer can be automatically turned on after the power supply is restored, which can effectively protect the computer system and data.

Description of drawings

Fig. 1 is the electrical schematic diagram of the present invention.

Among them: 1 switching power supply, 2DC-ATX power module, 3 delay relay, 4 battery, 5 computer motherboard interface.

detailed description

Below in conjunction with accompanying drawing, the present invention is described in further detail:

As shown in Figure 1, an integrated computer power-off protection power supply of the present invention includes an integrated

Switching power supply 1 module, DC-ATX power supply module 2, trigger delay circuit and external 12V storage battery 4 on one circuit board. Switching power supply 1 module converts AC 90-220v to 14.8v. The voltage output terminal of the switching power supply 1 module is connected to the voltage input terminal of the DC-ATX power supply module 2, and the voltage output terminal of the DC-ATX power supply module 2 is connected to the computer motherboard interface 5; the battery 4 is connected in parallel to the voltage output terminal of the switching power supply module 1 and the DC- A diode VD1 is connected between the voltage input terminals of the ATX power module 2 and between the positive pole of the battery 4 and the positive pole of the voltage output terminal of the switching power supply 1 module, and the diode VD1 is unidirectionally directed from the positive pole of the voltage output terminal of the switching power supply 1 module to the positive pole of the battery 4 Pass;

The trigger delay circuit includes a delay relay 3 connected in parallel to the voltage output terminal of the switching power supply 1 module and a trigger closing branch. The instantaneous contact of the delay relay 3 is connected in parallel with a relay normally open contact K2, and the relay normally open contact K2 is connected to the computer startup The switches are connected in parallel, and the trigger closing branch is connected in series with a diode VD2, a relay normally closed switch K1 and a relay coil K2, and the diode VD2 is unidirectionally conducted from the positive pole of the voltage output terminal of the switching power supply 1 module to the relay normally closed switch K1, and the relay After the normally closed switch K1 and the relay coil K2 are connected in series, a capacitor C2 is connected in parallel, and the relay coil K1 is connected between the positive and negative poles of the voltage output terminal of the switching power supply 1 module. If a delayed shutdown is required, the relay coil K1 is connected in series with the diode VD3, and the diode VD3 is unidirectionally conducted from the positive pole of the voltage output terminal of the switching power supply 1 module to the relay coil K1, and the relay coil K1 is connected in parallel with a capacitor C1. Delay relay 3 adopts FUJI ST3 model.

Its working principle is: when the power supply is working normally, the input 90-240v AC becomes DC 14.8v through the switching power supply 1 module, and the 12V, 7A battery is charged through the diode VD1, and the DC-ATX power supply module 2 is also powered, and the DC-ATX The power supply module 2 converts 14.8V direct current into three groups of voltages 12V, 5V and 3.3V of the interface 5 of the computer motherboard. The computer works normally. The DC-ATX power supply module 2 is used to greatly improve the efficiency of DC power supply.

When the power is cut off, the storage battery 4 continues to supply power to the computer, due to the unidirectional conduction of the diode VD1

function, the relay coil K1 is powered off, due to the unidirectional conduction of the diode VD3, the capacitor C1 that originally stored electric energy only discharges to the relay coil K1, and there will be a discharge delay of several seconds according to the parameter size of the capacitor C1, and the relay coil K1 is Electricity, the normally closed switch K1 of the relay is closed, due to the one-way conduction effect of the diode VD2, the capacitor C2 originally storing electric energy only discharges to the relay coil K2, and the normally open contact K2 of the relay is closed and then disconnected instantly, due to the normally open contact of the relay K2 is connected in parallel with the computer start switch, which is equivalent to outputting a switch signal with a delay of several seconds to the computer start switch, and the computer will automatically shut down according to the original setting.

When the mains power is restored, the relay coil K1 is energized, the relay normally closed switch K1 is disconnected, and the entire contact

The delay circuit does not work, but is only powered by the delay relay 3, and the instantaneous contact of the delay relay 3 is closed and then disconnected, which is equivalent to outputting a switching signal with a delay of several seconds to the computer to start the switch , the computer starts automatically according to the original setting.

The above description is only the preferred implementation mode of this patent. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of this patent, some improvements and replacements can also be made. These improvements and replacements It should also be regarded as the scope of protection of this patent.

Claims (2)

1. an integration computer power-off protection power supply, it is characterised in that: include being integrated in a circuit board

On switch power module, DC-ATX power module and Time delay circuit and external accumulator；Described switch electricity The voltage output end of source module is connected with DC-ATX power module voltage input end, and DC-ATX power module voltage output end connects There is computer motherboard interface；It is defeated with DC-ATX power module voltage that described accumulator is connected in parallel on switch power module voltage output end Enter between end, and between the voltage output end positive pole of battery positive voltage and switch power module, be connected to diode VD1, described two Pole pipe VD1 by the voltage output end positive pole of switch power module to battery positive voltage one-way conduction；

Described Time delay circuit includes the time-delay relay being connected in parallel on switch power module voltage output end and triggers Guan Bi Road, the instantaneous contacts of described time-delay relay is parallel with relay normally open contact K2, relay normally open contact K2 and opens with computer Dynamic switch in parallel, is in series with diode VD2, relay normally closed switch K1 and relay coil K2 in described triggering Guan Bi branch road, Described diode VD2 is by the voltage output end of switch power module positive voltage directional relay normally closed switch K1 one-way conduction, relay It is parallel with electric capacity C2, relay coil K1 after the series connection of normally closed switch K1 and relay coil K2 and is connected to switch power module electricity Between pressure output positive and negative charge.

Integration computer power-off protection power supply the most according to claim 1, it is characterised in that: described relay coil K1 goes here and there It is associated with diode VD3, described diode VD3 unidirectional to relay coil K1 by the voltage output end positive pole of switch power module Logical, relay coil K1 is parallel with electric capacity C1.