CN108574275B

CN108574275B - Power-off protection device, use method thereof and power supply equipment

Info

Publication number: CN108574275B
Application number: CN201810432694.4A
Authority: CN
Inventors: 任旭; 张振元
Original assignee: Zhuhai Yun Yun Photoelectric Technology Co Ltd
Current assignee: Beijing Yimei Yundong Photoelectric Technology Co.,Ltd.
Priority date: 2018-05-08
Filing date: 2018-05-08
Publication date: 2020-03-10
Anticipated expiration: 2038-05-08
Also published as: CN108574275A

Abstract

The application provides a power-off protection device, a using method thereof and power supply equipment, wherein the power-off protection device comprises a switch module, a self-locking module, a control module and a power supply module, wherein the control module is respectively electrically connected with the switch module, the self-locking module and the power supply module; the switch module is used for forming a first trigger signal or a second trigger signal when being pressed; the self-locking module is used for forming self-locking according to the first trigger signal, providing the voltage of the alternating current live wire to the alternating current output end of the self-locking module and powering off according to the control of the control module; the control module is used for controlling the power supply module to supply power to the load when the self-locking module forms self-locking, stopping the power supply of the power supply module under the control of the switch module, and controlling the self-locking module to be powered off according to a second trigger signal; and the power supply module is used for supplying power to the load according to the control of the control module, and has higher intelligent degree and better practicability.

Description

Power-off protection device, use method thereof and power supply equipment

Technical Field

The application relates to the technical field of circuit on-off control, in particular to a power-off protection device, a using method thereof and power supply equipment.

Background

At present, no matter in the work progress or in the family life, the power failure phenomenon all probably takes place, if the equipment user forgets or can't in time close the shift knob of equipment, treat to resume the power supply after, probably because there is instantaneous voltage rising to cause equipment to break down, can also burn out the circuit board seriously, not only brings certain potential safety hazard for equipment or personnel, still can cause the waste of the energy.

In order to solve the above problems, technicians in related fields have developed various types of power-off protection devices, and a common power-off protection device has a power-off shutdown protection power socket, so that automatic start of equipment after power-off and power-on can be avoided.

However, the above-mentioned intelligent degree that has a power failure and shuts down protection supply socket is relatively poor, and at the millisecond power failure clearance that the plug leads to of careless touching, the equipment still can not self-starting after the electricity connects, has influenced normal work.

Disclosure of Invention

In view of this, an object of the embodiments of the present application is to provide a power-off protection device, a method for using the same, and a power supply apparatus, which have a higher degree of intelligence and better practicability.

In a first aspect, an embodiment of the present application provides a power-off protection device, which includes a switch module, a self-locking module, a control module, and a power supply module; the control module is electrically connected with the switch module, the self-locking module and the power supply module respectively, the alternating current input end of the self-locking module is connected with an alternating current live wire, and the alternating current output end of the self-locking module is connected with the alternating current input ends of the control module and the power supply module;

the switch module is used for forming a first trigger signal when the power-off protection device is pressed down in a non-power-on state; and forming a second trigger signal when the power-off protection device is pressed down in a starting-up state;

the self-locking module is used for forming a self-locking loop according to a first trigger signal of the switch module and providing the voltage of the alternating current live wire to an alternating current output end of the self-locking module; and is used for powering off according to the control of the control module;

the control module is used for controlling the power supply module to supply power to a load when the self-locking module forms a self-locking loop, and is used for stopping the power supply module from supplying power under the control of the switch module; the self-locking module is also used for controlling the self-locking module to be powered off according to a second trigger signal of the switch module;

and the power supply module is used for supplying power to the load according to the control of the control module.

With reference to the first aspect, embodiments of the present application provide a first possible implementation manner of the first aspect, where the self-locking module includes an ac contactor and a first relay; the alternating current contactor is electrically connected with the first relay through the switch module, the alternating current input of the alternating current contactor is connected with the alternating current live wire, and the first relay is electrically connected with the control module;

the alternating current contactor is used for switching from a normally closed state to a normally open state after being electrified according to a first trigger signal of the switch module, and forms a self-locking loop with the first relay in the normally open state;

and the first relay is used for switching off the self-locking loop formed by the AC contactor according to the control of the control module.

With reference to the first possible implementation manner of the first aspect, the present application provides a second possible implementation manner of the first aspect, where the ac contactor includes an input end, a normally closed contact, a normally open contact, and a coil; the input end of the alternating current contactor is connected with the alternating current live wire, a normally closed contact of the alternating current contactor is electrically connected with the coil through the switch module, and a normally open contact of the alternating current contactor is electrically connected with the first relay;

the alternating current contactor is specifically used for enabling the input end, the normally closed contact, the switch module and the coil to form a current loop under the triggering of a first trigger signal of the switch module, and switching the normally closed contact to the normally open contact when the coil is electrified so that the input end, the normally open contact, the first relay and the coil form a self-locking loop.

With reference to the first aspect, an embodiment of the present application provides a third possible implementation manner of the first aspect, where the switch module includes a first contact end and a second contact end; the first contact end is electrically connected with the control module, and the second contact end is electrically connected with the self-locking module;

the switch module is specifically configured to form the first trigger signal when the first contact end is pressed to the second contact end when the power-off protection device is in a non-power-on state, and form the second trigger signal when the first contact end is pressed when the power-off protection device is in a power-on state.

With reference to the third possible implementation manner of the first aspect, this application provides an example of a fourth possible implementation manner of the first aspect, where the switch module includes a self-resetting switch; the bridge type movable contact of the self-reset switch is the first contact end, and the fixed contact of the self-reset switch is the second contact end.

With reference to the first aspect, an embodiment of the present application provides a fifth possible implementation manner of the first aspect, where the power supply module includes a switching power supply and a second relay; the switching power supply is electrically connected with the second relay, and the switching power supply and the second relay are both electrically connected with the control module;

the control module is further configured to generate a first control instruction for controlling the load to start when the self-locking module forms a self-locking loop, and send the first control instruction to the second relay; generating a second control instruction for controlling the load to be closed under the control of the switch module, and sending the second control instruction to the second relay;

the second relay is used for controlling the load to start according to the first control instruction; and controlling the load to be closed according to the second control instruction;

the switching power supply is used for supplying power to the load.

With reference to the first aspect, embodiments of the present application provide a sixth possible implementation manner of the first aspect, where the apparatus further includes an air switch; the input end of the air switch is connected with the alternating current live wire, and the output end of the air switch is electrically connected with the input end of the self-locking module;

and the air switch is used for automatically disconnecting to cut off the connection between the self-locking module and the AC live wire when the current flowing through the air switch is determined to be larger than the rated current.

In a second aspect, an embodiment of the present application further provides a power supply device including the power failure protection apparatus in any one of the first aspect and the first possible implementation manner to the sixth possible implementation manner of the first aspect.

In a third aspect, an embodiment of the present application further provides a method for using a power failure protection device, where the method includes:

forming a first trigger signal when the power-off protection device is pressed down by utilizing a switch module under the state that the power-off protection device is not started;

forming a self-locking loop by using the self-locking module according to the first trigger signal of the switch module, and providing the voltage of the alternating current live wire to the alternating current output end of the self-locking loop;

when the self-locking module forms a self-locking loop by using the control module, controlling the power supply module to supply power to the load;

and supplying power to the load by using the power supply module according to the control of the control module.

In a fourth aspect, an embodiment of the present application further provides a method for using a power failure protection device, where the method for using includes:

forming a second trigger signal when the power-off protection device is pressed down in a starting-up state by using a switch module;

and the control module is used for stopping the power supply of the power supply module under the control of the switch module, and controlling the power failure of the self-locking module according to a second trigger signal of the switch module.

The power-off protection device and the use method thereof and the power supply equipment provided by the embodiment of the application enable the whole power-off protection device to be integrated and intelligentized through the switch module, the self-locking module, the control module and the power supply module, and are poorer in intelligent degree of power-off shutdown protection power socket in the related technology, millisecond-level power-off gaps caused by careless contact of plugs can still prevent the equipment from being automatically started after power connection, and normal work is influenced The problem, through mutually supporting of switch module and control module realized the real-time switching of equipment power consumption and equipment outage, intelligent degree is higher, and further ensures the power consumption security of load based on the reposition of redundant personnel effect of auto-lock module.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram illustrating a power-off protection device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram illustrating a self-locking module in a power-off protection device according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram illustrating a power module in a power-off protection device according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating an application structure of a power-off protection device according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a current trend of a power-off protection device provided in an embodiment of the present application when the power-off protection device is turned on;

FIG. 6 is a flow chart illustrating a method for using a power outage protection device according to an embodiment of the present application;

fig. 7 shows a flowchart of a method for using another power failure protection device provided for the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

Considering that the intelligence degree of power failure shutdown protection power socket in the related art is relatively poor, when a millisecond-level power failure gap caused by carelessly touching a plug is encountered, equipment still cannot be automatically started after power connection, and normal work is influenced, on the basis, the embodiment of the application provides a power failure protection device, and the following embodiment is used for description.

With reference to fig. 1, 4, and 5, an embodiment of the present application provides a power outage protection device, which specifically includes: the automatic locking device comprises a switch module 11, a self-locking module 12, a control module 13 and a power supply module 14, wherein the control module 13 is respectively electrically connected with the switch module 11, the self-locking module 12 and the power supply module 14, the alternating current input end of the self-locking module 12 is connected with an alternating current live wire L, and the alternating current output end of the self-locking module 12 is connected with the alternating current input ends of the control module 13 and the power supply module 14; wherein:

the switch module 11 is used for forming a first trigger signal when the power-off protection device is pressed in a non-power-on state; and forming a second trigger signal when the power-off protection device is pressed down in a starting-up state;

the self-locking module 12 is used for forming a self-locking loop according to the first trigger signal of the switch module 11 and providing the voltage of the alternating current live wire L to an alternating current output end of the self-locking module; and for powering down according to the control of the control module 13;

the control module 13 is used for controlling the power supply module 14 to supply power to the load Z when the self-locking module 12 forms a self-locking loop, and is used for stopping the power supply module 14 from supplying power under the control of the switch module 11; the self-locking module 12 is also used for controlling the power-off of the self-locking module 12 according to a second trigger signal of the switch module 11;

and the power supply module 14 is used for supplying power to the load Z according to the control of the control module 13.

The power-off protection device provided by the embodiment of the application, through switch module 11, self-locking module 12, control module 13 and power supply module 14, make whole power-off protection device integration and intellectuality, it is relatively poor with the intelligent degree of power failure shutdown protection supply socket among the correlation technique, millisecond power failure clearance that leads to touching the plug carelessly, equipment still can not self-starting after connecing the electricity, normal work is influenced and compared, on one hand, can form the self-locking return circuit according to switch module 11's first trigger signal at self-locking module 12, realize the power supply to load Z through control module 13 control power supply module 14, on the other hand, can also be under control module 13's effect, according to switch module 11's second trigger signal disconnection above-mentioned self-locking return circuit, and stop supplying power for load Z, thereby avoided power failure shutdown protection supply socket among the correlation technique to be restricted by power failure clearance after connecing and lead to equipment can not self-starting and influenced normal work's equipment The problem is that the real-time switching between the equipment power utilization and the equipment power failure is realized through the mutual matching of the switch module 11 and the control module 13, the intelligent degree is higher, and the power utilization safety of the load Z is further ensured based on the shunting action of the self-locking module 12.

In the embodiment of the present application, it can be determined by the control module 13 whether the power-off protection device is in the power-on state or in the non-power-on state. When the power-off protection device is in two different states, the switch module 11 will form different trigger signals when being pressed down, and the control module 13 controls the load Z to perform operations such as opening and closing according to the different trigger signals. The power failure protection device provided in the embodiment of the present application is described in detail in two states.

In a first aspect: when the power-off protection device is in a non-power-on state, at this time, the switch module 11 forms a corresponding first trigger signal when being pressed down, the self-locking module 12 forms a self-locking loop between the self-locking module and an ac line (including an ac live wire L and an ac zero line N) according to the first trigger signal, and can provide the voltage of the ac live wire L to an ac output end of the self-locking module so as to control the power supply module 14 to transmit the voltage of the ac output end of the self-locking module 12 to the load Z through the control module 13 on the premise of forming the self-locking loop, thereby realizing the power supply of the load Z in the power-on state of the power-off protection device.

In a second aspect: when the power-off protection device is in a power-on state, at this time, when the switch module 11 is pressed down, a corresponding second trigger signal is formed, the control module 13 can not only control the self-locking module 12 to be powered off according to the second trigger signal, but also disconnect the self-locking loop, and also can control the power supply module 14 to stop supplying power to the load Z according to the second trigger signal. In the embodiment of the present application, the power supply module 14 may be controlled to stop supplying power to the load Z while the self-locking module 12 is controlled to be powered off by the second trigger signal, and the power supply module 14 may also be controlled to stop supplying power to the load Z by other control methods, for example, when the power-off protection device is in a power-on state, the power-off operation of the load Z may be controlled by the third trigger signal generated when the switch module 11 is pressed down.

It should be noted that the trigger signals (including the first trigger signal, the second trigger signal, and the third trigger signal) in the embodiment of the present application may be generated directly when the user presses the switch module 11, or may be generated when other control terminals act on the switch module 11 according to the generated control instruction for pressing the switch module 11, which is not limited in the embodiment of the present application.

The self-locking module 12 in the embodiment of the present application is a module capable of generating a self-locking loop under the action of the switch module 11, and the function of the module may be implemented by combining the ac contactor 121 and a relay, or by using other components (such as the ac contactor 121 and a compound switch).

As shown in fig. 2, a schematic structural diagram of the self-locking module 12 that combines the ac contactor 121 and the first relay 122 to realize the self-locking function is shown. The ac input of the ac contactor 121 is connected to the ac live line L, and the first relay 122 is electrically connected to the control module 13; wherein:

the alternating current contactor 121 is used for switching from a normally closed state to a normally open state after being electrified according to a first trigger signal of the switch module 11, and forms a self-locking loop with the first relay 122 in the normally open state;

and the first relay 122 is used for powering off according to the control of the control module 13 so as to open the self-locking loop formed with the alternating current contactor 121.

The power-off protection device provided by the embodiment of the application, under the premise that the switch module 11 forms the first trigger signal, the alternating current contactor 121 and the first relay 122 are combined into the self-locking loop to realize the self-locking function of the self-locking module 12, so that the damage to electric equipment (such as a load Z) caused by the generated instantaneous voltage when the power-off device is started again after the power-off is prevented, the power utilization safety is ensured, in addition, under the premise that the switch module 11 forms the second trigger signal, the self-locking loop is disconnected according to the control of the control module 13, and the alternating current contactor 121 and the first relay 122 reset accordingly. To further illustrate the operation of the self-locking module 12, the following description is provided in the power-on state and the non-power-on state.

When the power outage protection device is in the off state, and the switch module 11 is pressed, the ac live line L, the input end 1211 of the ac contactor 121, the output end of the ac contactor 121, and the ac neutral line N form a closed loop (as shown in fig. 4), and the coil 1214 included in the ac contactor 121 is also energized. When the coil 1214 is energized, the static iron core of the ac contactor 121 generates an electromagnetic attraction force, attracting the moving iron core, so that the normally closed contact 1212 is opened and the normally open contact 1213 is closed. In this way, the latching circuit formed by the ac contactor 121 and the first relay 122 is turned on (as shown in fig. 5), and the output voltage of the ac live line L can be output, thereby realizing the power-on operation. In addition, through the shunting action of the self-locking loop, the problem of poor power utilization safety caused by the condition of restarting after abnormal power failure can be avoided.

When the power-off protection device is in the on state, the control module 13, upon receiving the operation of pressing the switch module 11, may control the first relay 122 to power off, so that the entire latching circuit is opened, and the normally-closed contact 1212 of the ac contactor 121 is re-closed to perform the reset. In addition, when the self-locking loop is controlled to be disconnected according to the second trigger signal, the power supply module 14 can be controlled to stop supplying power to the load Z according to the second trigger signal, so that shutdown operation is realized.

The power-off protection device provided by the embodiment of the application can directly supply power to the load Z by the switch power supply 141, and can also supply power to the load Z by using the switch power supply 141 under the control action of the control module 13 on the relay. The second power supply mode will be mainly explained next.

As shown in fig. 3, the power supply module 14 in the embodiment of the present application includes a switching power supply 141 and a second relay 142. Specifically, when the power-off protection device is in a non-power-on state, the control module 13 can generate a first control instruction for controlling the load Z to start under the action of a first trigger signal of the switch module 11, the second relay 142 can decode the first control instruction under the control of the first control instruction to obtain a first driving instruction for driving the load Z to start, and the load Z is started under the action of the first driving instruction to realize the power-on operation. Similarly, when the power-off protection is in the power-on state, the control module 13 can generate a first control instruction for controlling the load Z to be turned off under the action of a second trigger signal of the switch module 11, the second relay 142 can decode the second control instruction under the control of the second control instruction to obtain a second driving instruction for driving the load Z to be turned off, and the load Z is turned off under the action of the second driving instruction, so that the power-off operation is realized.

It should be noted that, when the shutdown operation is performed, not only the disconnection of the self-locking loop and the power-off of the load Z may be controlled simultaneously by the second trigger signal, but also the power-off of the load Z may be controlled by other control signals, and the power-off of the load Z may not be controlled separately, so that the load Z is powered off automatically after the self-locking loop is disconnected, that is, after the circuit is disconnected. In addition, this application embodiment can also set up a plurality of second relays 142 in order to combine control module 13 to realize the power supply control to many loads Z, control module 13 can control when control power module 14 supplies power for load Z, can control to supply power to many loads Z in proper order, in order to ensure the stability of power consumption setting power consumption, can also control to supply power to specific load Z in many loads Z, in order to satisfy different demands of different users, and in the same way, control module 13 also can carry out operations such as outage in proper order and specific power supply when control power module 14 stops supplying power for load Z.

In consideration of the excellent characteristics of the ac contactor 121, such as energy saving, large suction force, and good reliability, the self-locking function of the self-locking module 12 in the embodiment of the present application may be realized depending on the ac contactor 121.

Fig. 4 is a schematic view of an application structure of a power-off protection device according to an embodiment of the present application. The ac contactor 121 includes an input end 1211, a normally closed contact 1212, a normally open contact 1213, and a coil 1214; an input end 1211 of the ac contactor 121 is connected to the ac live line L, a normally closed contact 1212 of the ac contactor 121 is electrically connected to the coil 1214 through the switch module 11, and a normally open contact 1213 of the ac contactor 121 is electrically connected to the first relay 122; wherein:

the ac contactor 121 is specifically configured to enable the input end 1211, the normally closed contact 1212, the switch module 11, and the coil 1214 to form a current loop when triggered by the first trigger signal of the switch module 11, and switch from the normally closed contact 1212 to the normally open contact 1213 when the coil 1214 is powered, so that the input end 1211, the normally open contact 1213, the first relay 122, and the coil 1214 form a self-locking loop.

In the embodiment of the present invention, when the power-off protection device is in the off state, the ac contactor 121 under the action of the first trigger signal, the ac live line L, the input end 1211 of the ac contactor 121, the output end of the ac contactor, and the ac neutral line N may form a closed loop, and the coil 1214 is powered on accordingly. When the coil 1214 is energized, the static iron core of the ac contactor 121 generates an electromagnetic attraction force, attracting the moving iron core, so that the normally closed contact 1212 is opened and the normally open contact 1213 is closed. In this way, the current flowing through the ac live wire L acts on the first relay 122 through the closed normally-open contact 1213, so that the self-locking loop formed by the ac contactor 121 and the first relay 122 is turned on, and the output voltage of the ac live wire L can be output (as shown in fig. 5), thereby implementing the power-on operation.

Similarly, when the power-off protection device is in the on state, the first relay 122 is powered off under the control of the control module 13, so that the self-locking loop is disconnected, the normally open contact 1213 of the ac contactor 121 is disconnected, and the normally closed contact 1212 of the ac contactor is closed, so as to reset, and the first relay 122 is reset accordingly, so as to implement the shutdown operation.

As shown in fig. 4 and 5, the switch module 11 in the power failure protection device includes a first contact end 111 and a second contact end 112; the first contact end 111 is electrically connected with the control module 13, and the second contact end 112 is electrically connected with the self-locking module 12; wherein:

the switch module 11 is specifically configured to form a first trigger signal when the power-off protection device is in a non-power-on state and the first contact end 111 is pressed to the second contact end 112, and form a second trigger signal when the power-off protection device is in a power-on state and the first contact end 111 is pressed.

In the embodiment of the present application, the switch module 11 may be a self-reset switch, and may also be another trigger switch, such as a reset switch. In view of the excellent characteristics of the self-resetting switch, the embodiment of the present application may implement the switching function of the above-described switching module 11 using the self-resetting switch.

The bridge type moving contact of the self-reset switch corresponds to the first contact end 111, and the static contact of the self-reset switch corresponds to the second contact end 112.

Specifically, when the self-reset switch is used to implement the switching function, the trigger signal in the embodiment of the present application may be formed by pressing the self-reset switch. When the power-off protection device is in a non-power-on state, the elastic rocker of the self-reset switch is connected with the first contact end 111, and when the first contact end 111 is pressed to the second contact end 112, the elastic rocker of the self-reset switch is connected with the second contact end 112, so that the normally-open contact 1213 of the alternating current contactor 121 is conducted with the coil 1214 thereof, and when the coil 1214 is electrified, the normally-open contact 1213 is switched to the normally-closed contact 1212, and then the self-locking loop is conducted, so that the power-on operation is realized. At this time, the reset mechanism of the self-reset switch automatically restores the elastic rocker to be connected with the first contact end 111. In the power-on state, the control module may control the self-locking circuit to be turned off and the power supply module 14 to stop supplying power to the load Z according to a second trigger signal formed by disconnecting the elastic rocker of the self-resetting switch from the first contact end 111.

It should be noted that the control module 13 in the embodiment of the present application may control the power supply module 14 to supply power to or stop supplying power to the multiple loads Z according to the number of times, the duration of pressing the self-reset switch, or a combination of the two, so as to meet different requirements of a user on supplying power to or cutting off power from the multiple loads Z.

For further safety protection of the electrical equipment, the power failure protection device provided by the embodiment of the present application may further be provided with an air switch 15. As shown in fig. 4 and 5, the input end of the air switch 15 is connected to the ac live line L, and the output end of the air switch 15 is electrically connected to the input end of the self-locking module 12; wherein:

and the air switch 15 is used for automatically opening to cut off the connection between the self-locking module 12 and the AC live wire L when the current flowing through the air switch is determined to be larger than the rated current.

In the embodiment of the application, the air switch 15 is an overcurrent protection device, and when the current in the circuit exceeds the preset rated current of the air switch 15, the air switch 15 is switched to the off state by closing, so that the whole circuit is disconnected therewith, thereby not only realizing the safety protection of the electric equipment, but also preventing the related circuit devices in the circuit from being damaged due to overcurrent, and having better practicability.

Based on the power-off protection device, the embodiment of the application also provides the power supply equipment, and the power supply equipment can be operated independently and can also be operated in combination with other power supply equipment, so that the safety protection of the load Z and devices in the power supply circuit is realized.

Based on the same inventive concept, the embodiment of the present application further provides a method for using a power-off protection device corresponding to the power-off protection device, and since the principle of solving the problem of the method in the embodiment of the present application is similar to that of the power-off protection device in the embodiment of the present application, the implementation of the method can be referred to the implementation of the device, and repeated details are not described again.

As shown in fig. 6, a flowchart of a method for using a power failure protection device according to an embodiment of the present application is provided, where the method for using the power failure protection device includes the following steps:

s101, forming a first trigger signal when the power-off protection device is pressed down by utilizing a switch module under the condition that the power-off protection device is not started;

s102, forming a self-locking loop by using a self-locking module according to a first trigger signal of a switch module, and providing the voltage of an alternating current live wire to an alternating current output end of the self-locking loop;

s103, controlling a power supply module to supply power to a load when the self-locking module forms a self-locking loop by using the control module;

and S104, supplying power to the load by using the power supply module according to the control of the control module.

As shown in fig. 7, a flowchart of a method for using another power outage protection device provided in the embodiment of the present application is provided, where the method for using the power outage protection device includes the following steps:

s201, forming a second trigger signal when the power-off protection device is pressed down in a starting state by using a switch module;

s202, the power supply module stops supplying power under the control of the switch module by utilizing the control module, and the self-locking module is controlled to be powered off according to a second trigger signal of the switch module.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power-off protection device is characterized by comprising a switch module, a self-locking module, a control module and a power supply module; the control module is electrically connected with the switch module, the self-locking module and the power supply module respectively, the alternating current input end of the self-locking module is connected with an alternating current live wire, and the alternating current output end of the self-locking module is connected with the alternating current input ends of the control module and the power supply module;

the power supply module is used for supplying power to the load according to the control of the control module;

the self-locking module comprises an alternating current contactor and a first relay; the alternating current contactor is electrically connected with the first relay through the switch module, the alternating current input of the alternating current contactor is connected with the alternating current live wire, and the first relay is electrically connected with the control module;

2. The power failure protection device of claim 1, wherein the ac contactor comprises an input terminal, a normally closed contact, a normally open contact, and a coil; the input end of the alternating current contactor is connected with the alternating current live wire, a normally closed contact of the alternating current contactor is electrically connected with the coil through the switch module, and a normally open contact of the alternating current contactor is electrically connected with the first relay;

3. The power down protection device of claim 1, wherein the switch module includes a first contact end and a second contact end; the first contact end is electrically connected with the control module, and the second contact end is electrically connected with the self-locking module;

4. The power down protection device of claim 3, wherein the switch module comprises a self-resetting switch; the bridge type movable contact of the self-reset switch is the first contact end, and the fixed contact of the self-reset switch is the second contact end.

5. The power-off protection device of claim 1, wherein the power supply module comprises a switching power supply and a second relay; the switching power supply is electrically connected with the second relay, and the switching power supply and the second relay are both electrically connected with the control module;

the switching power supply is used for supplying power to the load.

6. The power outage protection device of claim 1, further comprising an air switch; the input end of the air switch is connected with the alternating current live wire, and the output end of the air switch is electrically connected with the input end of the self-locking module;

7. A power supply apparatus comprising the power outage protection device of any one of claims 1 to 6.

8. A method of using a power down protection device, using the power down protection device of any one of claims 1 to 6, the method comprising:

9. A method of using a power down protection device, using the power down protection device of any one of claims 1 to 6, the method comprising: