TW201533568A - Power supplier capable of turning on/off DC standby power - Google Patents

Abstract

The present invention discloses a power supplier capable of turning on/off DC standby power. The invention comprises a switching power circuit and a relay driving circuit. One end of an AC power input port of the switching power circuit is cascaded to a switch of a relay. When the relay is conducted, the switching power circuit converts the AC power into a DC standby power and at least one DC operating power. The relay driving circuit controls the relay and does not conduct the switch of the relay when a computer connected to the power supplier of the present invention is turned off such that the switching power circuit would not output the DC standby power. The relay driving circuit would conduct the switch of the relay until the computer boots on, thereby providing the DC standby power required for booting up the computer.

Description

Power supply that can open and close the DC standby power supply

This creation relates to a power supply, especially a power supply that can be used to open and close a DC standby power supply on a computer.

Referring to FIG. 8, an existing power supply 50 has an AC-to-DC conversion unit 51, a standby power output unit 52, and a working power output unit 53.

The AC-to-DC conversion unit 51 is connected to an AC power source AC, and converts the AC power source into two DC power source outputs. The standby power source output unit 52 and the working power output unit 53 are connected to the AC-DC conversion unit 51. The two DC power sources are respectively obtained, and the DC power source is respectively converted into a DC standby power supply V _SB and at least a DC power supply V _OP ; wherein when the AC-DC conversion unit 51 continuously outputs DC power, the standby power output unit 52 continues to output DC standby power V _SB .

A motherboard 60 of the computer is respectively connected to the standby power output unit 52 and the working power output unit 53, wherein the standby power output unit 52 continuously supplies DC standby power to the motherboard 60, so that the motherboard 60 even The standby state of the motherboard 60 can still be maintained by the DC standby power supply when the computer is turned off; but when the computer is turned off, the working power output unit 53 does not output the at least DC power supply to the motherboard 60. When the computer is turned on, the motherboard 60 outputs a main power signal terminal PS-ON to drive the power supply 50, so that the working power output unit 53 outputs the at least DC power supply V _OP to the motherboard 60.

However, the conversion efficiency of the standby power output unit 52 is not high, but the DC standby power V _{SB of} the motherboard 60 is continuously supplied when the motherboard 60 has not been _activated , resulting in unnecessary consumption of the power supply 50. Further, the overall conversion efficiency of the power supply 50 is lowered.

In view of the above defects of the existing power supply, the main purpose of the present invention is to provide a power supply capable of opening and closing the DC standby power supply to solve the technical defect of low conversion efficiency.

The main technical means adopted for achieving the above purpose is that the power supply of the closable DC standby power supply includes: a switching power supply circuit, wherein one end of the AC current input port is connected to a switch of a relay, And when the relay is turned on, the switching power supply circuit converts the alternating current power into a direct current standby power supply and at least a continuous current working power supply; and a relay driving circuit is connected to a driving coil of the relay, and the switching type The DC standby power supply of the power circuit includes: an initial trigger unit, comprising a first electronic switch and a battery, wherein the first electronic switch and the driving coil of the relay are serially connected to the circuit of the battery, and the The control end of the first electronic switch is connected to a power switch of a computer, so that the first electronic switch is turned on when the power switch is turned on; and a continuous trigger unit includes a second electronic switch, and the drive coil of the relay Connected to the power supply circuit of the DC standby power supply and has a control terminal; and a connection control unit, including a third electronic switch connected to the control end of the second electronic switch of the connection triggering unit, wherein the third electronic switch has a control end for connecting the control board of the external computer to control the signal end, and controlling the signal end with the motherboard Determining whether the third electronic switch is turned on, wherein when the third electronic switch is turned on, the second electronic switch is also turned on.

Through the above relay driving circuit, the DC standby power supply of the author power supply is switched on and off with the computer on/off, that is, the authorizes the power supply to input the AC power into the switching power supply circuit at the moment when the computer is to be turned on. The DC standby power is output, and the AC power input is cut off after the computer is turned off, so that the switching power supply circuit does not output the DC standby power, so that the motherboard does not consume the DC standby power after the computer is turned off. In order to improve the overall conversion efficiency of the original power supply.

Please refer to FIG. 1 , which is a power supply for creating a DC standby power supply with a switched power supply circuit 10 and a relay drive circuit 20 .

The switching power supply circuit 10 has a relay 11, an electromagnetic interference filter 12, an AC to DC converter 13, a power factor correction unit 14, a standby power output unit 15, and a working power output unit 16. One end of the AC current input port of the switching power supply circuit 10 is connected in series with a switch 111 of the relay 11. Therefore, the switching power supply circuit 10 obtains an AC power AC input when the switch 111 is turned on. The two input ends of the electromagnetic interference filter 12 are respectively connected to the switch 111 of the relay 11 and the other end of the AC current input port of the switching power supply circuit 10, so as to suppress environmental factors when the AC power is input. Electromagnetic interference generated. The AC-to-DC converter 13 is coupled to the EMI filter 12 to convert an AC power AC input to a DC power output. The power factor correction unit 14 is coupled to the AC to DC converter 13 to correct the power factor of the DC power source. The standby power output unit 15 and the working power output unit 16 are respectively connected to the power factor correction unit 14 to obtain the DC power. The standby power output unit 15 converts the DC power into a standby power V _SB and outputs it to the motherboard 30 of a computer. The working power output unit 16 is a DC-to-DC converter, and the DC power is converted into DC operating power with different output levels and output to the motherboard 30. In the preferred embodiment, the output level of the standby power supply V _SB is taken as an example of 5V, and the two output levels of the two DC working power supplies are respectively 12V and 24V, but not limited to this value. .

Referring to FIG. 1 and FIG. 2, the first preferred embodiment of the relay driving circuit 20 for opening and closing the DC standby power supply is connected to the driving coil 112 of the relay 11 and the standby power source V _SB , and has a The initial initial trigger unit 21, a connection trigger unit 22, and a connection control unit 23.

The initial trigger unit 21 has a first electronic switch Q301 and a battery 211. The battery 211 is serially connected to a driving coil 112 of the relay 11 through the first electronic switch Q301 to form a battery circuit. The control end of the first electronic switch Q301 is connected to the power switch SW of the computer. Moreover, in the first preferred embodiment, the first electronic switch Q301 is a PNP type double-sided carrier transistor (BJT), and the emitter and collector of the first electronic switch Q301 are respectively The battery 211 is connected to the driving coil 112. The base of the first electronic switch Q301 is its control end, and the control end of the first electronic switch Q301 is further connected to the high potential end of the DC standby power supply V _SB .

The connection triggering unit 22 is connected in series with the driving coil 112 of the relay 11 to the power supply circuit of the DC standby power supply V _SB , and has a second electronic switch Q302 , wherein the second electronic switch Q302 has a control end. Moreover, in the first preferred embodiment, the second electronic switch Q302 is a PNP type double-sided carrier transistor (BJT), and the emitter and collector systems thereof respectively and the DC standby power supply V _SB The high potential end is connected to the driving coil 112, and the base of the second electronic switch Q302 is its control end.

The connection control unit 23 is connected to the connection trigger unit 22 and has a third electronic switch Q303, wherein the third electronic switch Q303 is connected to the control end of the second electronic switch Q302 of the connection trigger unit 22, and the The three-electron switch Q303 has a control terminal for controlling the signal terminal MB signal of the motherboard of the external computer 30, and determines whether the third electronic Q303 switch is turned on by the control signal terminal MB signal of the motherboard, wherein the third electronic switch Q303 When turned on, the second electronic switch Q302 is also turned on. In the first preferred embodiment, the third electronic switch Q303 is an N-type metal oxide half field effect transistor (MOSFET), and the drain and source are respectively connected to the base of the second electronic switch Q302. And grounding, and the gate of the third electronic switch Q303 is its control end.

The following is a detailed description of the detailed process of the first preferred embodiment of the power supply for opening and closing the DC standby power supply. Please refer to the following table 1 for the power switch of the computer and the motherboard 30. The output potential of each state of the computer is high or low, wherein H represents an output high potential, L represents an output low potential, and the switch 11 of the relay 11 is turned on or off in each state of the computer, wherein ON represents conduction, and OFF represents ON. Not conductive. Power switch relay switch switch motherboard control signal terminal main power signal terminal boot instant LONLH boot state HONHL standby state HONHH shutdown state HON> OFFLH abnormal state HONLL Table I

Referring to FIG. 1 , FIG. 2 , FIG. 6A , FIG. 6D , FIG. 6E and the above table 1 , when the computer is turned on, the power switch SW is pressed and grounded, so that the first electronic switch Q301 of the initial trigger unit 21 is turned on. Turning on, the current is passed through the driving coil 112, the switching switch 111 of the relay 11 is turned on, and the standby power output unit 15 is further outputted by the standby power supply V _SB when the control end of the first electronic switch Q301 is When the DC standby power supply V _SB is at a high potential, the first electronic switch Q301 is not turned on, and the battery circuit is disconnected, that is, the battery 211 outputs current only when the power switch SW is pressed, and the power is supplied to the power supply. Before the switch SW is bounced, the battery circuit is disconnected to save power of the battery 211. In the first preferred embodiment, the first electronic switch Q301 only needs to be turned on for 8ms after the power switch SW is pressed for 8ms. This battery loop can be broken. Referring to FIG. 2, FIG. 6A, FIG. 6B, FIG. 6G and FIG. 6H, when the motherboard 30 confirms that the boot request is received, the control signal terminal MBsignal of the motherboard is converted from a low potential to a high potential. The third electronic switching element Q303 continues to be turned on again, and the second electronic switch Q302 continues to be turned on.

When the motherboard 30 is powered off in a normal working state, at this time, the motherboard control signal terminal MB signal outputs a low potential, so that the third switching element Q303 of the connection control unit 23 is not turned on, and the connection trigger unit 22 is The two electronic switches Q302 are not turned on to cut off the current supply of the driving coil 112 of the relay 11, and further disable the switching switch 11 to cut off the AC power AC input of the switching power supply circuit 10 for the computer. When the power is off, the two DC working power supplies and the DC standby power supply V _SB are completely cut off.

Through the first preferred embodiment of the relay driving circuit 20, the DC standby power supply V _SB of the authoring power supply is turned on and off with the computer switching machine, that is, the creative power supply is connected to the computer to be turned on. The AC power supply AC is input to the switching power supply circuit 10 to output the DC standby power supply V _SB , and the AC power supply AC input is cut off after the computer is turned off, and the switching power supply circuit 10 no longer outputs the DC standby power. The power supply V _SB causes the motherboard 30 to not consume the DC standby power V _SB after the computer is turned off, so as to improve the overall conversion efficiency of the author power supply.

1 and 3, a second preferred embodiment of the relay drive circuit 20 for opening and closing a DC standby power supply is connected to the drive coil 112 of the relay 11 and the standby power supply V _SB , and An initial trigger unit 21, a connection trigger unit 22, a connection control unit 23, and a power-on delay unit 24, wherein the initial trigger unit 21, the connection trigger unit 22, and the connection are further included in addition to the power-on delay unit 24. The circuit and operation mode of the control unit 23 are substantially the same as those of the first preferred embodiment of the relay driving circuit 20, and therefore will not be described below.

The power-on delay unit 24 has a fourth electronic switch Q304, wherein the two ends of the fourth electronic switch Q304 are respectively controlled by a high potential end of the DC standby power supply V _SB and a third electronic switch Q303 of the connection control unit 23 The terminal is connected, and the control end of the fourth electronic switch Q304 is connected to the power switch SW of the computer to control whether the fourth electronic switch Q304 is turned on or not through the power switch SW. Moreover, in the preferred embodiment, the fourth electronic switch Q304 is a PNP type double-sided carrier transistor (BJT), and the emitter and collector are respectively higher than the DC standby power supply V _SB . The potential end is connected to the control end of the third electronic switch Q303, the base of the fourth electronic switch Q304 is its control end, and the control end of the fourth electronic switch Q304 is further connected with a capacitor C305 to further ensure the The control terminal of the fourth electronic switch Q304 is at a low potential to turn on the fourth electronic switch Q304.

Referring to FIG. 3, FIG. 6A, FIG. 6B, FIG. 6F, FIG. 6G and FIG. 6H, the control end of the fourth electronic switch Q304 of the power-on delay unit 24 (ie, the base of the fourth electronic switch Q304) is also powered by the power supply. The switch SW is pressed to be grounded, and after the DC standby power supply V _{SB is} generated until the power switch SW bounces, the fourth electronic switch Q304 is turned on, and the fourth electronic switch Q304 generates a collector current. To provide the voltage of the control terminal (ie, the gate of the third electronic switch Q303), the third electronic switch Q303 is turned on, and the base of the second electronic switch Q302 of the connection trigger unit 22 is grounded. The second electronic switch Q302 is turned on, and the collector current of the second electronic switch Q302 continues to flow through the driving coil 112 of the relay 11, so that the switching switch 111 is disconnected from the battery circuit of the initial trigger unit 21. The galvanic current of the fourth electronic switch Q304 can still be maintained in an on state to provide a startup delay time of the motherboard 30, so that the motherboard 30 can maintain the DC standby power V _SB during the startup delay time and Confirm receipt Machine requirements, when the motherboard 30 to acknowledge receipt of power requirements, enabling the system motherboard MBsignal control signal from a low end to a high voltage potential transitions, so that the third electronic switch Q303 is turned on to continue.

In addition to the advantages of the first preferred embodiment, the second preferred embodiment of the relay driving circuit 20 further provides a delay time for the motherboard 30 to confirm receipt of the power-on request, so that the connection trigger unit 22 does not cause The power switch SW is pressed for too short to be driven, and the computer cannot be turned on normally.

1 and 4, a third preferred embodiment of the relay drive circuit 20 for opening and closing a DC standby power supply is connected to the drive coil 112 of the relay 11 and the standby power supply V _SB , and An initial trigger unit 21, a connection trigger unit 22, a connection control unit 23, and a power-on delay unit 24, wherein the initial trigger unit 21, the connection trigger unit 22, and the connection control unit are included in addition to the power-on delay unit 24. The circuit and operation mode of the circuit 23 are substantially the same as those of the second preferred embodiment of the relay driving circuit 20, and therefore will not be described below.

In the third preferred embodiment of the relay driving circuit 20, the control terminal of the fourth electronic switch Q304 of the power-on delay unit 24 is further connected to a main power signal terminal PS-ON of the motherboard 30, and the power is The switch SW cooperates with the main power signal terminal PS-ON to jointly control the opening and closing of the fourth electronic switch Q304.

Referring to FIG. 1, FIG. 4, FIG. 7C, FIG. 7D, FIG. 7F, FIG. 7I and the above table 1, when the computer is turned on, the main power signal terminal PS-ON of the motherboard 30 is converted from a high potential. The operating power output unit 16 of the switching power supply circuit 10 outputs the two DC operating power to the motherboard 30, and the control terminal of the fourth electronic switch Q304 of the power-on delay unit 24 is low. The fourth electronic switch Q304 continues to be turned on. Therefore, even if the motherboard control signal terminal MB signal is switched from the high power to the low level due to an abnormal factor such as a fault, the fourth electronic switch Q304 The third electronic switch Q303 of the connection control unit 22 can still be turned on with its collector current to keep the switch 111 of the relay 11 still turned on, without the short abnormality of the signal signal MB signal of the motherboard. The AC power AC input of the switching power supply circuit 10 is turned off.

Please refer to FIG. 1 , FIG. 4 , FIG. 7B , FIG. 7C , FIG. 7D , FIG. 7E , FIG. 7F and the above table 1 . When the computer is not used for a period of time after being turned on or the standby request is received, the computer enters the standby state, and the main power signal terminal PS-ON of the motherboard 30 is switched from the low potential to the high potential to cut off the switching. The DC power supply output of the power supply circuit 10, and the fourth electronic switch Q304 is not turned on, but the control signal terminal MB signal of the motherboard 30 remains high, so that the connection control unit 22 maintains conduction. The switch 111 of the relay 11 is still turned on, and the AC power AC input of the switching power supply circuit 10 is not cut off because the computer is in the standby state, so that the motherboard 30 can still obtain the DC standby power V _SB input. In order to maintain the standby state, and can respond to the user's needs at any time to restore the power on state.

When the motherboard 30 is shut down in a normal working state, the main power signal terminal PS-ON of the motherboard 30 is switched from a low potential to a high potential, so that the fourth electronic switch Q304 of the boot delay unit 24 is not turned on. The low-potential output of the motherboard signal signal terminal MB signal causes the third electronic switch Q303 of the connection control unit 23 to be non-conducting, and the second electronic switch Q302 of the connection triggering unit 22 is not turned on to cut off the driving of the relay 11. The current of the coil 112 is supplied, and the switch 11 is further turned off to cut off the AC power AC input of the switching power supply circuit 10, so that the two DC working power supplies and the DC are completely cut off when the computer is in the off state. Standby power supply V _SB .

In addition to the advantages of the second preferred embodiment, the third preferred embodiment of the relay driving circuit 20 further ensures the switching switch 111 of the relay 11 without the transient abnormality of the signal signal MB signal of the motherboard. The AC power supply AC input of the switching power supply circuit 10 is cut off to prevent the computer from being accidentally shut down.

Moreover, referring to FIG. 1 and FIG. 5, a fourth preferred embodiment of the relay driving circuit 20 for opening and closing the DC standby power supply is connected to the driving coil 112 of the relay 11 and the standby power source V _SB , and An initial trigger unit 21, a connection trigger unit 22, a connection control unit 23, a power-on delay unit 24, and a shutdown delay unit 25, wherein the initial trigger unit 21, the connection, in addition to the shutdown delay unit 25 The circuit and operation mode of the trigger unit 22, the connection control unit 23, and the power-on delay unit 24 are substantially the same as those of the third preferred embodiment of the relay driving circuit 20. Therefore, the details are not described below.

The shutdown delay unit 40 has a charging diode D303, a discharge resistor R308 and a storage capacitor C304. The cathode and anode of the charging diode D303 are respectively connected to the third electronic switch Q303 of the connection control unit 23. The control terminal and the control signal terminal MB signal of the motherboard are connected in series between the control end of the third electronic switch Q303 and the control signal terminal MB signal of the motherboard and in parallel with the charging diode D303. . Both ends of the storage capacitor C304 are respectively connected and grounded to the control end of the third electronic switch Q303. When the computer is in the power-on state or the standby state, because the motherboard signal signal terminal MB signal outputs a high potential, the storage capacitor C304 quickly stores energy through the charging diode D303. When the computer receives the shutdown request, the storage capacitor C304 slowly releases its stored energy through the discharge resistor R308, so that the third electronic switch Q303 can be re-conducted by the stored energy of the storage capacitor C304 for a delay time. In order to delay the shutdown of the computer, the computer will not be powered off instantaneously when the computer is turned off. The user can adjust the delay value of the shutdown of the computer by adjusting the capacitance value of the storage capacitor C304 and the resistance value of the discharge resistor R308.

In addition to the advantages of the third preferred embodiment, the fourth preferred embodiment of the relay driving circuit 20 further ensures that the computer does not fail to store important data in time due to a momentary power failure during shutdown.

In summary, through the first to fourth preferred embodiments of the relay driving circuit 20, the DC standby power supply V _SB of the authoring power supply is turned on and off with the computer switching machine, that is, the authoring power supply device The AC power supply AC is input to the switched power supply circuit 10 to output the DC standby power supply V _SB at the moment when the computer is to be turned on, and the AC power input is turned off after the computer is turned off, and the switched power supply is turned off. The circuit 10 no longer outputs the DC standby power V _SB , so that the motherboard 30 does not consume the DC standby power V _SB after the computer is turned off, so as to improve the overall conversion efficiency of the author power supply.

10‧‧‧Switching power supply circuit
11‧‧‧ Relay
111‧‧‧Toggle switch
112‧‧‧ drive coil
12‧‧‧Electromagnetic interference filter
13‧‧‧AC to DC converter
14‧‧‧Power Factor Correction Unit
15‧‧‧Standby power output unit
16‧‧‧Working power output unit
20‧‧‧Relay drive circuit
21‧‧‧Initial trigger unit
Q301‧‧‧First electronic switch
211‧‧‧Battery
22‧‧‧Continuous trigger unit
Q302‧‧‧Second electronic switch
23‧‧‧Continuous control unit
Q303‧‧‧ Third electronic switch
24‧‧‧Power-on delay unit
Q304‧‧‧fourth electronic switch
C305‧‧‧ capacitor
30‧‧‧ motherboard
MBsignal‧‧‧ motherboard control signal end
PS-ON‧‧‧ main power signal end
SW‧‧‧Power switch
40‧‧‧Shutdown delay unit
D303‧‧‧Charging diode
R308‧‧‧Discharge resistor
C304‧‧‧ storage capacitor
50‧‧‧Power supply
51‧‧‧AC to DC conversion unit
52‧‧‧Standby power output unit
53‧‧‧Working power output unit

Figure 1 is a block diagram showing the connection of the author's power supply to the motherboard of a computer. 2 is a detailed circuit diagram of a first preferred embodiment of a relay drive circuit of the present power supply. Figure 3 is a detailed circuit diagram of a second preferred embodiment of the relay drive circuit of the present power supply. Figure 4 is a detailed circuit diagram of a third preferred embodiment of the relay drive circuit of the present power supply. Figure 5 is a detailed circuit diagram of a fourth preferred embodiment of the relay drive circuit of the present power supply. 6A to 6C are output waveform diagrams of the motherboard. 6D to FIG. 6I are output waveform diagrams of the power supply device of the present invention capable of opening and closing the DC standby power supply corresponding to the relay driving circuit shown in FIG. 2 and FIG. 3. 7A to 7C are output waveform diagrams of the motherboard. 7D to 7I are output waveform diagrams of the power supply device of the present invention capable of opening and closing the DC standby power supply corresponding to the relay drive circuit shown in FIGS. 4 and 5. Figure 8 is a block diagram showing the connection of a power supply to a motherboard of a computer.

10‧‧‧Switching power supply circuit

11‧‧‧ Relay

111‧‧‧Toggle switch

112‧‧‧ drive coil

12‧‧‧Electromagnetic interference filter

13‧‧‧AC to DC converter

14‧‧‧Power Factor Correction Unit

15‧‧‧Standby power output unit

16‧‧‧Working power output unit

20‧‧‧Relay drive circuit

30‧‧‧ motherboard

MB signal‧‧‧ motherboard control signal terminal

PS-ON‧‧‧ main power signal end

SW‧‧‧Power switch

Claims (15)

The utility model relates to a power supply device capable of opening and closing a DC standby power supply, comprising: a switching power supply circuit, wherein one end of the AC current input port is connected to a switch of a relay, and when the relay is turned on, the switching is performed. The power supply circuit converts the AC power into a DC standby power supply and at least a DC power supply; and a relay drive circuit is connected to a drive coil of the relay and a DC standby power supply of the switched power supply circuit, which includes An initial triggering unit includes a first electronic switch and a battery, wherein the first electronic switch and the driving coil of the relay are serially connected to the circuit of the battery, and the control end of the first electronic switch is provided for The power switch of the computer is connected to make the first electronic switch be turned on when the power switch is turned on; and the connecting trigger unit includes a second electronic switch connected in series with the driving coil of the relay in the power supply circuit of the DC standby power supply and Having a control terminal; and a connection control unit, comprising a third electronic switch, and the connection trigger unit The control end of the second electronic switch is connected, wherein the third electronic switch has a control end for connecting the control signal end of the motherboard of the external computer, and the control signal end of the motherboard determines whether the third electronic switch is turned on, wherein When the third electronic switch is turned on, the second electronic switch is also turned on. The power supply for opening and closing a DC standby power supply according to claim 1, wherein a control end of the first electronic switch of the initial trigger unit is further connected to a high potential end of the DC standby power supply; the relay drive circuit is further The utility model has a power-on delay unit, which has a fourth electronic switch, wherein one end of the fourth electronic switch is connected to the high-potential end of the DC standby power supply, and the other end is connected to the control of the third electronic switch of the connection control unit And the control end of the fourth electronic switch is connected to the power switch of the computer, so that the fourth electronic switch is turned on when the power switch is pressed, so that the third electronic switch is turned on. The power supply for opening and closing the DC standby power supply according to claim 2, wherein the control end of the fourth electronic switch of the drive-on delay unit is further connected to the main power signal end of the computer. The power supply for opening and closing a DC standby power supply according to claim 3, wherein the relay driving circuit further has a shutdown delay unit having: a charging diode, wherein the cathode and the anode are respectively connected to the connection control a control end of the third electronic switch of the unit and the control signal end of the motherboard; a discharge resistor is serially connected between the control end of the third electronic switch and the control signal end of the motherboard and in parallel with the charging diode And a capacitor, the two ends of which are respectively connected and grounded to the control end of the third electronic switch. The power supply for opening and closing a DC standby power supply according to claim 1, wherein the first electronic opening relationship of the initial trigger unit is a PNP type double-sided carrier transistor, and the emitter of the first electronic switch And the collector system is respectively connected to the battery and the driving coil, and the base of the first electronic switch is its control end. The power supply for opening and closing a DC standby power supply according to any one of claims 2 to 4, wherein the first electronic opening relationship of the initial trigger unit is a PNP type double-sided carrier transistor, and the first An emitter and an collector of an electronic switch are respectively connected to the battery and the driving coil, and a base of the first electronic switch is a control end thereof. The power supply for opening and closing a DC standby power supply according to claim 5, wherein the second electronic opening relationship of the connection triggering unit is a PNP type double-sided carrier transistor, and the emitter and the collector are respectively Connected to the high potential end of the DC standby power supply and the driving coil, and the base of the second electronic switch is its control end; the third electronic opening relationship of the connection control unit is an N-type metal oxide half field effect transistor The drain and source are respectively connected and grounded to the base of the connection trigger unit, and the gate of the third electronic switch is its control terminal. The power supply for opening and closing the DC standby power supply according to claim 6, wherein the second electronic opening relationship of the connection triggering unit is a PNP type double-sided carrier transistor, and the emitter and the collector are respectively Connected to the high potential end of the DC standby power supply and the driving coil, and the base of the second electronic switch is its control end; the third electronic opening relationship of the connection control unit is an N-type metal oxide half field effect transistor The drain and source are respectively connected and grounded to the base of the connection trigger unit, and the gate of the third electronic switch is its control terminal. The power supply for opening and closing a DC standby power supply according to any one of claims 2 to 4, wherein the fourth electronic opening relationship of the power-on delay unit is a PNP-type double-sided carrier transistor, and the same The pole and the collector are respectively connected to the high potential end of the DC standby power supply and the control end of the third electronic switch of the connection control unit, and the base of the fourth electronic switch is its control end. The power supply for opening and closing a DC standby power supply according to claim 6, wherein the fourth electronic opening relationship of the power-on delay unit is a PNP-type double-sided carrier transistor, and the emitter and the collector are respectively Connected to the high potential end of the DC standby power supply and the control end of the third electronic switch of the connection control unit, and the base of the fourth electronic switch is its control end. The power supply for opening and closing a DC standby power supply according to any one of the preceding claims, wherein the fourth electronic opening relationship of the power-on delay unit is a PNP-type double-sided carrier transistor, and an emitter thereof The collector system is respectively connected to the high potential end of the DC standby power supply and the control end of the third electronic switch of the connection control unit, and the base of the fourth electronic switch is its control end. The power supply for opening and closing a DC standby power supply according to any one of claims 2 to 4, wherein the control end of the fourth electronic switch of the power-on delay unit is further connected to a capacitor. The power supply for opening and closing the DC standby power supply according to claim 6, wherein the control end of the fourth electronic switch of the power-on delay unit is further connected to a capacitor. The power supply for opening and closing a DC standby power supply according to any one of claims 1 to 4, wherein the switching power supply circuit has: an electromagnetic interference filter, the two input ends of which are respectively associated with the switch of the relay And the other end of the AC current input port of the switching power supply circuit is connected to receive the AC power input; an AC to DC converter is connected to the electromagnetic interference filter to convert the AC power input into a DC power output; a power factor correction unit is connected to the AC to DC converter to correct a power factor of the DC power source; a standby power output unit is coupled to the power factor correction unit to convert the DC power source to the DC standby power source; The working power output unit is coupled to the power factor correction unit to convert the DC power to the at least one-way operating power source. The power supply for opening and closing a DC standby power supply according to claim 13, wherein the switching power supply circuit has: an electromagnetic interference filter, wherein the two input ends are respectively connected to the switch of the relay and the switched power supply circuit The other end of the AC current input port is connected to receive the AC power input; an AC to DC converter is connected to the electromagnetic interference filter to convert the AC power input into a DC power output; a power factor correction unit, And the AC to DC converter is connected to correct the power factor of the DC power source; a standby power output unit is coupled to the power factor correction unit to convert the DC power to the DC standby power; and a working power output unit And the power factor correction unit converts the DC power source into the at least DC current operating power source.