CN206135530U

CN206135530U - Power supply switching device

Info

Publication number: CN206135530U
Application number: CN201621086186.8U
Authority: CN
Inventors: 章春鹏
Original assignee: SHENZHEN INHEMETER CO Ltd
Current assignee: Galaxy Power Group Co., Ltd
Priority date: 2016-09-27
Filing date: 2016-09-27
Publication date: 2017-04-26
Anticipated expiration: 2026-09-27

Abstract

The utility model discloses a power supply switching device, including voltage monitoring module, host system, relay, output detection circuit and fuse block, the one end of voltage monitoring module and fuse block respectively with each way line connection of heterogeneous power supply, the other end and the relay of fuse block are connected, host system respectively with voltage monitoring module, relay and output detection circuit's one end is connected, output detection circuit's the other end with the output of relay is connected. The voltage condition of each phase line can be monitored out through voltage monitoring module to the host system control relay selects appropriate phase line to export, rethread output detection circuit detects the output state of relay, and host system goes on carrying out corresponding control to the relay, prevents the short circuit phenomenon, when if the emergence abnormal conditions lead to the short circuit, the fuse block action to can prevent that the more severe accident that the short circuit caused from taking place, further improve the security of power supply.

Description

Power switching device

Technical field

This utility model is related to electrically switch field, more particularly to a kind of power switching device.

Background technology

In batch meter, it is frequently used shunt release or motor-operating mechanism to realize the action of chopper, but These devices are substantially single phase power supply, in three-phase and four-line or two-phase, three-wire system, as long as these devices are powered one Phase power-off, may result in cannot operate to chopper.

The Chinese patent of the A of Publication No. CN 104283306 proposes a kind of intelligent power supply switch, including MCU controls Circuit and the supply module being connected respectively with the MCU control circuit, four road electric voltage observation circuits, four tunnel controlled output electricity Road, product working status display circuit, buzzing alarming circuit and special installation control circuit.

Aforesaid way is controlled with catalyst or relay, but safety is upper defective, in the event of action It is bad, short circuit can be caused so that driving means are burnt, or even initiation fire.

Utility model content

Technical problem to be solved in the utility model is：There is provided a kind of three-phase and four-line or two-phase, three-wire by electricity box to supply Electricity turns the switching device of single phase power supply, can be prevented effectively from the bad caused short circuit problem of generation action.

In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is：

A kind of power switching device, including voltage monitoring module, main control module, relay, output detection circuit and insurance Each road connection that one end of box, the voltage monitoring module and safety box powers respectively with multiphase, the safety box it is another One end is connected with relay, and the main control module is respectively with the one of the voltage monitoring module, relay and output detection circuit End connection, the other end of the output detection circuit is connected with the outfan of the relay.

Further, also including power module, one end of the power module connects each route road that the multiphase is powered, The other end of the power module connects respectively the voltage monitoring module and main control module.

Further, the built-in Surge Protector of the power module.

Further, the main control module includes logic judging circuit, the input connection institute of the logic judging circuit Voltage monitoring module and output detection circuit are stated, the outfan of the logic judging circuit connects the relay.

Further, each route road that each route road powers for three-phase and four-line.

Further, each route road that each route road powers for two-phase, three-wire.

Further, also including alarm, the alarm is connected with the main control module.

The beneficial effects of the utility model are：Each phase line that multiphase is powered can be detected by voltage monitoring module Voltage condition, so as to master control module controls relay is switched accordingly, selects appropriate power supply phase line to be exported；Again by defeated Go out to detect the output state of electric circuit inspection relay, and testing result is exported to main control module, main control module is carried out to relay Device is accordingly controlled, and prevents short circuit phenomenon；When causing short circuit in the event of abnormal conditions, safety box action, so as to Enough prevent the more major accident that short circuit is caused from occurring, further increase the safety of power supply.

Description of the drawings

Fig. 1 is the structural representation of the power switching device of this utility model embodiment；

Fig. 2 is the structural representation of the power switching device of this utility model embodiment one.

Label declaration：

1st, voltage monitoring module；2nd, main control module；3rd, relay；4th, output detection circuit；5th, safety box；6th, power supply mould Block；7th, alarm.

Specific embodiment

To describe technology contents of the present utility model in detail, being realized purpose and effect, below in conjunction with embodiment and match somebody with somebody Close accompanying drawing to be explained in detail.

The design of this utility model most critical is：Output detection circuit and safety box are set, and relay passes through safety box It is connected with each phase line that multiphase is powered, output detection circuit is connected respectively with relay and main control module, by relay Output state feeds back to main control module.

Refer to Fig. 1, this utility model provides a kind of power switching device, including voltage monitoring module 1, main control module 2, One end of relay 3, output detection circuit 4 and safety box 5, the voltage monitoring module 1 and safety box 5 powers respectively with multiphase Each road connection, the other end of the safety box 5 is connected with relay 3, and the main control module 2 is supervised respectively with the voltage Survey one end connection of module 1, relay 3 and output detection circuit 4, the other end of the output detection circuit 4 and the relay The outfan connection of device 3.

Further, also including power module 6, one end of the power module 6 connects each route that the multiphase is powered Road, the other end of the power module 6 connects respectively the voltage monitoring module 1 and main control module 2.

Knowable to foregoing description, multiphase is powered and is converted into main control module and the available electricity of voltage monitoring module by power module It is main control module and voltage monitoring module for power supply behind source；Satisfactory battery can also directly be adopted for main control module and electricity Pressure monitoring modular is powered.

Further, the built-in Surge Protector of the power module 6.

Knowable to foregoing description, Surge Protector provides surge protection for the driving coil of power module, it is ensured that power supply mould Block does not receive external interference.

Further, the main control module 2 includes logic judging circuit, the input connection institute of the logic judging circuit Voltage monitoring module 1 and output detection circuit 4 are stated, the outfan of the logic judging circuit connects the relay 3.

Knowable to foregoing description, the result input logic decision circuitry of voltage monitoring module and output detection circuit detection, Jing after logic judging circuit compares, analyzes, to relay control signal and node signal, the output of control relay are sent；It is main Control module can also be MCU.

Further, each route road that each route road powers for two-phase, three-wire.

Further, also including alarm 7, the alarm 7 is connected with the main control module 2.

Knowable to foregoing description, if the failures such as short circuit occurs in circuit, alarm equipment alarm can be passed through.Alarm can be sound The equipment reported to the police can be realized in any prior art such as light crossing-signal, phonetic alarm.

Fig. 2 is refer to, embodiment of the present utility model is：

A kind of power switching device, including：It is power module, voltage monitoring chip, safety box, main control module, relay, defeated Go out to detect circuit and audible-visual annunciator, the main control module includes logic judging circuit, the input of the power module, voltage The input of detection module and one end of safety box connect respectively tetra- lines of L1, L2, L3, N that three-phase and four-line is powered, such as Fig. 2 institutes Show；

The input of relay is connected with the safety box other end, the control end of relay and the logic judging circuit Outfan connection, the outfan of relay is connected with the input of output detection circuit, the outfan of output detection circuit with The outfan of voltage monitoring chip is connected with the input of logic judging circuit, the outfan of logic judging circuit also with acousto-optic Alarm connects.

The operation principle of above-mentioned power switching device is as follows：

Voltage monitoring chip detection L1 phase is normal, when L2 phases and L3 phase decompressions, master control module controls relay correspondence L1 phases Switch closure, other are switched off, output L1 phases power；In the same manner, voltage monitoring chip monitors that L2 phases are normal, L1 phases and L3 During phase decompression, the switch closure of master control module controls relay correspondence L2 phases, other are switched off, and are switched to L2 phases and are powered；It is defeated Go out to detect the output of circuit real-time detection relay, detect output abnormality and feed back to main control module, main control module is to relay Accordingly controlled, prevented short circuit；Meanwhile, if short circuit occurs in circuit, safety box action disconnects in circuit；And circuit Reported to the police by audible-visual annunciator when abnormal.

In sum, the power switching device that this utility model is provided, three-phase and four-line can be powered or two-phase, three-wire is supplied Electricity is converted into single phase power supply such that it is able to the equipment such as the follow-up chopper for accessing are operated, and can be automatically switched to Appropriate power supply phase line is exported, additionally it is possible to is detected output state in time, is prevented short circuit, even if appearance is abnormal short-circuit, also can Circuit is disconnected in time, and can be reported to the police in abnormal cases, there is intelligence switching and safe power supply.

Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every The equivalents made using this utility model description and accompanying drawing content, or directly or indirectly it is used in the technology neck of correlation Domain, is included in the same manner in scope of patent protection of the present utility model.

Claims

1. a kind of power switching device, it is characterised in that including voltage monitoring module, main control module, relay, output detection electricity Each road connection that one end of road and safety box, the voltage monitoring module and safety box powers respectively with multiphase, the guarantor The other end of dangerous box is connected with relay, and the main control module is detected respectively with the voltage monitoring module, relay and output One end connection of circuit, the other end of the output detection circuit is connected with the outfan of the relay.

2. power switching device according to claim 1, it is characterised in that also including power module, the power module One end connect each route road that the multiphase is powered, the other end of the power module connects respectively the voltage monitoring module And main control module.

3. power switching device according to claim 2, it is characterised in that the built-in Surge Protector of the power module.

4. power switching device according to claim 1, it is characterised in that the main control module includes logical judgment electricity Road, the input of the logic judging circuit connects the voltage monitoring module and output detection circuit, the logical judgment electricity The outfan on road connects the relay.

5. power switching device according to claim 1, it is characterised in that what each route road powered for three-phase and four-line Each route road.

6. power switching device according to claim 1, it is characterised in that what each route road powered for two-phase, three-wire Each route road.

7. power switching device according to claim 1, it is characterised in that also including alarm, the alarm and institute State main control module connection.