CN106300250A - Charging circuit interrupts device and charging circuit self-detection method - Google Patents
Charging circuit interrupts device and charging circuit self-detection method Download PDFInfo
- Publication number
- CN106300250A CN106300250A CN201510262107.8A CN201510262107A CN106300250A CN 106300250 A CN106300250 A CN 106300250A CN 201510262107 A CN201510262107 A CN 201510262107A CN 106300250 A CN106300250 A CN 106300250A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- detection
- signal
- charging circuit
- oneself
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of charging circuit and interrupt device, in order to the first input power cord of power system and the input voltage of the second input power cord are provided to exporting system, including: current measuring element, oneself's detection device and controller.Current measuring element performs earth leakage detection functions, when the first input power cord being detected and the second input power cord has difference between current, sends electric leakage signal.Oneself's detection device produces bypass path according to detection enable signal, and makes the first input power cord and the second input power cord have difference between current.When operating in oneself's detection pattern, controller sends detection enable signal, and when receiving electric leakage signal, controller judges that earth leakage detection functions is normal and provides input voltage to exporting system.
Description
Technical field
The present invention is related to a kind of charging circuit and interrupts device and method, has oneself particularly with regard to one
The charging circuit of detection earth leakage detection functions interrupts device and method.
Background technology
When system is coupled to power system, can effectively tie up in the power supply of cut-out the most immediately that electric leakage occurs
Protect the safety of personnel.Therefore, how to guarantee that earth leakage detection functions normal operation becomes extremely important, so
We need one can oneself detection earth leakage detection functions apparatus and method.
Summary of the invention
In view of this, the present invention proposes a kind of charging circuit and interrupts device, in order to by the 1 of unified power system the
One input power cord is coupled to one first out-put supply line of an output system and by above-mentioned power system
One second input power cord is coupled to one second out-put supply line of above-mentioned output system so that above-mentioned power train
System provides an input voltage extremely above-mentioned output system, including: a current measuring element, oneself's detection device
And a controller.Above-mentioned current measuring element performs an earth leakage detection functions, wherein when detecting above-mentioned
When one section of one input power cord and above-mentioned second input power cord has a difference between current, above-mentioned electric current is examined
Survey element and send an electric leakage signal.Above-mentioned oneself's detection device produces a bypass road according to a detection enable signal
Footpath, and make a test electric current flow to above-mentioned second input electricity from a primary nodal point of above-mentioned first input power cord
One secondary nodal point of source line so that above-mentioned section has above-mentioned difference between current.Controller noted above works as controller noted above
Above-mentioned detection enable signal is sent, wherein on controller noted above receives when operating in oneself's detection pattern
When stating electric leakage signal, controller noted above judges that above-mentioned earth leakage detection functions is normal, stops exporting above-mentioned detection and causes
Energy signal and entrance one normal mode, and above-mentioned input voltage is provided to above-mentioned output system.
According to one embodiment of the invention, controller noted above does not receive above-mentioned electric leakage in a given time
During signal, controller noted above judges the failure of above-mentioned earth leakage detection functions, and forbids providing above-mentioned input voltage
To above-mentioned output system.
According to one embodiment of the invention, when controller noted above operates in above-mentioned normal mode and receives above-mentioned
Electric leakage signal, controller noted above forbids providing to above-mentioned output system, wherein when above-mentioned above-mentioned input voltage
When controller operates in above-mentioned normal mode and do not receives above-mentioned electric leakage signal, controller noted above is persistently by upper
State input voltage to provide to above-mentioned output system.
According to one embodiment of the invention, controller noted above judges above-mentioned input voltage according to a voltage signal
Voltage range and export a status signal, above-mentioned oneself detection device operate in one according to above-mentioned status signal
First mode or one second pattern.
According to one embodiment of the invention, above-mentioned charging circuit interrupts device and further includes a voltage check device,
Produce in order to detect above-mentioned first input power cord and the above-mentioned input voltage of above-mentioned second input power cord
Raw above-mentioned voltage signal, wherein according to above-mentioned voltage signal, controller noted above judges that above-mentioned input voltage is positioned at one
First voltage range and the one of one second voltage range, wherein when above-mentioned input voltage is in above-mentioned first electricity
During pressure scope, above-mentioned oneself's detection device operates in above-mentioned first mode, wherein when above-mentioned input voltage is in upper
When stating the second voltage range, above-mentioned oneself's detection device operates in above-mentioned second pattern.
According to one embodiment of the invention, above-mentioned oneself's detection device includes: one first resistance, one first inspection
Slowdown monitoring switch, one second resistance and one second detection switch.Above-mentioned first resistance is coupled to above-mentioned primary nodal point
And one first between internal node.Above-mentioned first detection switchs above-mentioned according to above-mentioned detection enable signal
First internal node is coupled to one second internal node.Above-mentioned second resistance is coupled to above-mentioned second internal node
And between above-mentioned secondary nodal point.Above-mentioned second detection switch according to above-mentioned status signal by above-mentioned second
Portion's node is coupled to above-mentioned secondary nodal point.
According to one embodiment of the invention, when above-mentioned oneself's detection device operates in above-mentioned first mode, on
State the first detection switch and above-mentioned first internal node is coupled to above-mentioned second internal node, and above-mentioned second inspection
Above-mentioned second internal node is coupled to above-mentioned secondary nodal point by slowdown monitoring switch, when above-mentioned oneself's detection device operates in
During above-mentioned second pattern, it is internal that above-mentioned first internal node is coupled to above-mentioned second by above-mentioned first detection switch
Node, and above-mentioned second detection switch be not turned on, wherein
When controller noted above operates in above-mentioned normal mode, above-mentioned first detection switch and above-mentioned second inspection
Slowdown monitoring switch is all not turned on, wherein
In above-mentioned first mode and above-mentioned second pattern, above-mentioned oneself's detection device produces identical above-mentioned
Test electric current.
According to one embodiment of the invention, above-mentioned first detection switch and above-mentioned second detection switch are respectively
One optocoupler components.
According to one embodiment of the invention, above-mentioned charging circuit interrupt device further include: one first switch and
One second switch.Above-mentioned first input power cord is coupled by above-mentioned first switch according to one first switching signal
To above-mentioned first out-put supply line.Above-mentioned second switch inputs above-mentioned second according to a second switch signal
Power line is coupled to above-mentioned second out-put supply line, wherein operates in above-mentioned oneself's detection mould when controller noted above
Formula and judge when above-mentioned earth leakage detection functions is normal, controller noted above utilize above-mentioned first switching signal and on
State second switch signal to provide above-mentioned input voltage to above-mentioned output system, wherein judge when controller noted above
During above-mentioned earth leakage detection functions failure, controller noted above utilizes above-mentioned first switching signal and above-mentioned second to open
OFF signal is forbidden providing to above-mentioned output system above-mentioned input voltage.
According to one embodiment of the invention, when controller noted above operates in above-mentioned normal mode and receives above-mentioned
During electric leakage signal, controller noted above utilizes above-mentioned first switching signal and above-mentioned second switch signal-inhibiting to incite somebody to action
Above-mentioned input voltage provides to above-mentioned output system, wherein when controller noted above operate in above-mentioned normal mode and
When not receiving above-mentioned electric leakage signal, controller noted above utilizes above-mentioned first switching signal and above-mentioned second to open
Above-mentioned input voltage is persistently provided to above-mentioned output system by OFF signal.
The present invention more proposes a kind of charging circuit self-detection method, it is adaptable to a charging circuit interrupts device will
One first input power cord of unified power system be coupled to an output system one first out-put supply line and
One second input power cord of above-mentioned power system is coupled to one second out-put supply of above-mentioned output system
Line so that above-mentioned power system provides an input voltage extremely above-mentioned output system, including: when above-mentioned charged electrical
When road interruption device operates in oneself's detection pattern, output one detection enable signal, the most above-mentioned oneself examines
Survey pattern detects an earth leakage detection functions in order to oneself；Oneself's inspection is utilized according to above-mentioned detection enable signal
Survey device and produce bypass path, make a test electric current primary nodal point stream from above-mentioned first input power cord
A secondary nodal point to above-mentioned second input power cord so that above-mentioned first input power cord and above-mentioned second
One section of input power cord has a difference between current；When detecting that above-mentioned section has above-mentioned difference between current, produce
A raw electric leakage signal；When receiving above-mentioned electric leakage signal, it is judged that above-mentioned earth leakage detection functions is normal；By upper
State charging circuit interruption device and operate in a normal mode；And above-mentioned input voltage is provided to above-mentioned output
System.
According to one embodiment of the invention, further include: in a given time, do not receive above-mentioned electric leakage letter
Number；Judge the failure of above-mentioned earth leakage detection functions；And forbid providing to above-mentioned output system above-mentioned input voltage
System.
According to one embodiment of the invention, further include: when above-mentioned charging circuit interrupt device operate in above-mentioned just
Norm formula and when receiving above-mentioned electric leakage signal, forbids providing to above-mentioned output system above-mentioned input voltage；
And operate in above-mentioned normal mode when above-mentioned charging circuit interrupts device and do not receive above-mentioned electric leakage signal
Time, persistently above-mentioned input voltage is provided to above-mentioned output system.
According to one embodiment of the invention, above-mentioned utilize according to above-mentioned detection enable signal above-mentioned oneself detection
Device produces the step of above-mentioned bypass path and further includes: judge the electricity of above-mentioned input voltage according to a voltage signal
Pressure scope and export a status signal；And according to above-mentioned status signal, by above-mentioned oneself's detection device operation
In a first mode or one second pattern.
According to one embodiment of the invention, further include: detect above-mentioned first input power cord and above-mentioned second
The above-mentioned input voltage of input power cord and send above-mentioned voltage signal；Judge above-mentioned according to above-mentioned voltage signal
Power system is just providing above-mentioned input voltage, exports above-mentioned detection enable signal；Sentence according to above-mentioned voltage signal
Disconnected above-mentioned input voltage is positioned at a first voltage range and the one of one second voltage range；When above-mentioned input
Above-mentioned oneself's detection device, when above-mentioned first voltage range, is operated in above-mentioned first mode by voltage；And
When above-mentioned input voltage is in above-mentioned second voltage range, above-mentioned oneself's detection device is operated in above-mentioned second
Pattern.
According to one embodiment of the invention, above-mentioned oneself's detection device includes: one first resistance, one first inspection
Slowdown monitoring switch, one second resistance and one second detection switch.Above-mentioned first resistance is coupled to above-mentioned primary nodal point
And one first between internal node.Above-mentioned first detection switchs above-mentioned according to above-mentioned detection enable signal
First internal node is coupled to one second internal node.Above-mentioned second resistance is coupled to above-mentioned second internal node
And between above-mentioned secondary nodal point.Above-mentioned second detection switch according to above-mentioned status signal by above-mentioned second
Portion's node is coupled to above-mentioned secondary nodal point.
According to one embodiment of the invention, above-mentioned charging circuit self-detection method further includes: as above-mentioned oneself
When detection device operates in above-mentioned first mode, utilize above-mentioned first detection switch by above-mentioned first internal node
It is coupled to above-mentioned second internal node, and utilizes above-mentioned second detection switch to be coupled by above-mentioned second internal node
To above-mentioned secondary nodal point；When above-mentioned oneself's detection device is operated in above-mentioned second pattern, utilize above-mentioned the
Above-mentioned first internal node is coupled to above-mentioned second internal node by one detection switch, and is not turned on above-mentioned second
Detection switch, wherein in above-mentioned first mode and above-mentioned second pattern, above-mentioned oneself's detection device produces
Identical above-mentioned test electric current；And when above-mentioned charging circuit interruption device operates in above-mentioned normal mode,
It is not turned on above-mentioned first detection switch and above-mentioned second detection switch.
According to one embodiment of the invention, above-mentioned first detection switch and above-mentioned second detection switch are respectively
One optocoupler components.
According to one embodiment of the invention, above-mentioned charging circuit self-detection method further includes: when above-mentioned charging
Circuit interrupting device operates in above-mentioned oneself's detection pattern and judges when above-mentioned earth leakage detection functions is normal, produces
One first switching signal and a second switch signal；Open according to above-mentioned first switching signal and above-mentioned second
OFF signal, provides above-mentioned input voltage to above-mentioned output system；When above-mentioned charging circuit interrupts device operation
In above-mentioned oneself's detection pattern and when judging above-mentioned earth leakage detection functions failure, produce above-mentioned first switching signal
And above-mentioned second switch signal；And utilize above-mentioned first switching signal and above-mentioned second switch signal,
Forbid providing to above-mentioned output system above-mentioned input voltage.
According to one embodiment of the invention, above-mentioned charging circuit self-detection method further includes: when above-mentioned charging
When circuit interrupting device operates in above-mentioned normal mode and receives above-mentioned electric leakage signal, produce above-mentioned first and open
OFF signal and above-mentioned second switch signal；According to above-mentioned first switching signal, forbid above-mentioned input voltage
There is provided to above-mentioned output system；Operate in above-mentioned normal mode when above-mentioned charging circuit interrupts device and do not receive
During to above-mentioned electric leakage signal, produce above-mentioned first switching signal and above-mentioned second switch signal；And according to
Above-mentioned first switching signal and above-mentioned second switch signal, persistently provide above-mentioned input voltage to above-mentioned defeated
Go out system.
Accompanying drawing explanation
Fig. 1 is the block chart showing and interrupting device according to the charging circuit described in one embodiment of the invention；
Fig. 2 is to show the circuit diagram according to the oneself's detection device described in one embodiment of the invention；
Fig. 3 is to show the circuit diagram according to the detection switch described in one embodiment of the invention；And
Fig. 4 is to show the flow process according to the charging circuit self-detection method described in one embodiment of the invention
Figure.
Reference:
100 charging circuits interrupt device
101 voltage check devices
102 controllers
103 current measuring elements
104,200 oneself's detection device
105 first switches
106 second switches
110 power systems
120 output systems
201 first resistance
202 first detection switches
203 second resistance
204 second detection switches
300 detection switches
301 optical coupling elements
302 first current-limiting resistances
303 transistors
304 first bias resistances
305 second bias resistances
310 light emitting diodes
320 optotransistor switches
L_IN the first input power cord
N_IN the second input power cord
PE earth lead
L_OUT the first out-put supply line
N_OUT the second out-put supply line
PE_OUT exports earth lead
XL primary nodal point
XN secondary nodal point
X1 the first internal node
X2 the second internal node
SV voltage signal
SM status signal
SL electric leakage signal
EN detects enable signal
IT tests electric current
IIN inflow current
IOUT flows out electric current
IL glow current
SC1 the first switching signal
SC2 second switch signal
C1 the first switching node
C2 second switch node
CT switch control node
S1～S7 steps flow chart
Detailed description of the invention
For making the above-mentioned purpose of the present invention, feature and advantage to become apparent, hereafter the most real especially exemplified by one
Execute example, and coordinate institute's accompanying drawings, be described in detail below:
Described below according to preferred embodiment of the present invention.Must be noted that the present invention provides
Many applicable inventive concepts, the specific embodiment disclosed at this, it is only for explanation and reaches and fortune
By the ad hoc fashion of the present invention, and unavailable to limit to the scope of the present invention.
Fig. 1 is the block chart showing and interrupting device according to the charging circuit described in one embodiment of the invention.As
Shown in Fig. 1, charging circuit interrupts device 100 in order to provide the input voltage of power system 110 to output
System 120, the first input power cord L_IN and the second input power cord N_IN of power system 110,
It is respectively coupled to the first out-put supply line L_OUT and the second out-put supply line of output system 120
N_OUT, the earth lead PE of power system 110 are substantially coupled to the output earth lead of output system 120
PE_OUT.According between one embodiment of the invention, earth lead PE and output earth lead PE_OUT
Having an impedor, wherein this impedor is in order to intercept noise.
Charging circuit interrupts device 100 and includes voltage check device 101, controller 102, current detecting unit
Part 103, oneself's detection device the 104, first switch 105 and second switch 106.Voltage check device
101 detection power systems 110 the first input power cord L_IN and the second input power cord N_IN and
Send voltage signal SV and judge power system to controller 102, controller 102 according to voltage signal SV
During 110 offer input voltage, output detections enable signal EN is to oneself's detection device 104.
According to one embodiment of the invention, current measuring element 103 has current sense function, in order to detect
The current differential flow to and flow out, as detected the first input power when power system 110 inputs positive half cycle
The outflow electric current IOUT of the inflow current IIN and the second input power cord N_IN of line L_IN, works as inflow
When electric current IIN and outflow electric current IOUT has a difference between current, current measuring element 103 sends electric leakage letter
Number SL is to controller 102.When controller 102 receives electric leakage signal SL, controller 102 then stops
The input voltage of the first input power cord L_IN and the second input power cord N_IN is provided to exporting system
System 120.According to one embodiment of the invention, current measuring element 103 is a current transformer (current
transformer)。
According to one embodiment of the invention, when controller 102 determines to carry the input voltage of power system 110
When being supplied to output system 120, controller 102 utilizes first switching signal SC1 conducting the first switch 105
And utilize second switch signal SC2 to turn on second switch 106.According to another embodiment of the present invention, when
When controller 102 determines not provide the input voltage of power system 110 to output system 120, controller
102 utilize the first switching signal SC1 be not turned on the first switch 105 and utilize second switch signal SC2
It is not turned on second switch 106.
Controller 102 operates in a normal mode and oneself's detection pattern.When controller 102 operates in
During normal mode, the input voltage of power system 110 is provided to output system 120 by controller 102, and
Current measuring element 103 is utilized to detect inflow current and flow out whether electric current has a difference between current and send
Electric leakage signal SL.
According to one embodiment of the invention, when controller 102 operates in normal mode, if controller 102
Find that inflow current IIN is not equal to flow out electric current IOUT according to electric leakage signal SL, i.e. represent and leak electricity,
Controller 102 utilizes the first switching signal SC1 be not turned on the first switch 105 and utilize second to open immediately
OFF signal SC2 is not turned on second switch 106, stops providing to output the input voltage of power system 110
System 120.
According to another embodiment of the present invention, when controller 102 operates in normal mode, if controller
102 do not receive electric leakage signal SL, i.e. represent operation normal, then controller 102 utilizes the first switch
The input voltage of power system 110 is persistently provided to output by signal SC1 and second switch signal SC2
System 120.
According to one embodiment of the invention, before controller 102 enters normal mode, that is again by electric power
The input voltage of system 110 provided before output system 120, and controller 102 first operates in oneself's detection
Pattern, the detection function detecting current measuring element 103 in order to oneself is the most normal.When controller 102
When operating in oneself's detection pattern, controller 102 utilizes detection enable signal EN enable oneself to detect device
104, oneself's detection device 104 makes to test electric current IT immediately and flow to secondary nodal point from primary nodal point XL
XN, thus results in the first input power cord L_IN and second input that current measuring element 103 is detected
The inflow current IIN of the section of power line N_IN is not equal to flow out electric current IOUT, in order to simulate actual leakage
The situation of electricity, and the detection function of oneself's detection current measuring element 103 is the most normal.
Voltage signal SV that controller 102 is more sent according to voltage detecting circuit 101 and judge input electricity
The voltage range of pressure, more according to the voltage range of input voltage, output status signal SM is extremely for controller 102
Oneself's detection device 104 so that input voltage is when different voltage ranges, and electric current IT is the most identical in test.
Below for how producing test electric current IT it is described in detail.
When controller 102 operates in oneself's detection pattern, if current measuring element 103 detects inflow electricity
Stream IIN and flow out electric current IOUT and there is difference between current and send electric leakage signal SL to controller 102, when
Controller 102 receives electric leakage signal SL, and to represent the detection function of current measuring element 103 normal.?
Utilize first control signal SC1 conducting the first switch 105 and utilize second switch signal SC2 conducting the
Two switches 106 so that the input voltage of power system 110 provides to output system 120.
When controller 102 operates in oneself's detection pattern, if current measuring element 103 does not sends electric leakage letter
Number SL, the detection function representing current measuring element 103 is abnormal.According to one embodiment of the invention,
When controller 102 does not receive electric leakage signal SL, then utilize the first control signal SC1 and second
Control signal SC2 is persistently not turned on the first switch 105 and second switch 106, to stop power system
The input voltage of 110 provides to output system 120.
When controller 102 operate in normal mode and current measuring element 103 detect inflow current IIN with
And flowing out electric current IOUT time there is the first difference between current, current measuring element 103 sends electric leakage signal SL；
When controller 102 operate in oneself detection pattern and current measuring element 103 detect inflow current IIN with
And flowing out electric current IOUT time there is the second difference between current, current measuring element 103 sends electric leakage signal SL.
According to one embodiment of the invention, the first difference between current is equal to the second difference between current；Another according to the present invention is implemented
Example, the first difference between current is not equal to the second difference between current.
According to another embodiment of the present invention, when controller 102 operate in oneself detection pattern time and in one both
When not receiving electric leakage signal SL in fixing time, controller 102 judges the leakage of current measuring element 103
The failure of electro-detection function, and persistently it is not turned on the first switch 105 and second switch 106 by power system
110 and output system 120 open circuit.According to one embodiment of the invention, when controller 102 is in both timings
In when not receiving electric leakage signal SL, the detection function representing current measuring element 103 is abnormal,
Controller 102 more sends a warning, to inform that exception occurs in user current measuring element 103.
According to one embodiment of the invention, when controller 102 operates in oneself's detection pattern and in 60 millis
When not receiving electric leakage signal SL in the second (msec), controller 102 judges current measuring element 103
Earth leakage detection functions failure.According to other embodiments of the invention, designer can decide both timings in its sole discretion
Between length.
Fig. 2 is to show the circuit diagram according to the oneself's detection device described in one embodiment of the invention.Such as Fig. 2
Shown in, oneself's detection device 200 includes that the first resistance 201, first detects switch the 202, second resistance 203
And the second detection switch 204, wherein oneself's detection device 200 be coupled to the primary nodal point XL of Fig. 1 with
And between secondary nodal point XN.According to one embodiment of the invention, the first detection switch 202 and the second inspection
Slowdown monitoring switch 204 is respectively optocoupler components.
As in figure 2 it is shown, the first resistance 201 be coupled to primary nodal point XL and the first internal node X1 it
Between, the first detection switch 202 is a detection switch, this detection switch have the first switching node C1, the
Two switching node C2 and switch control node CT, wherein switch control node CT is in order to control first
Switching node C1 is coupled to second switch node C2.First detection switch 202 is according to the controller of Fig. 1
The detection enable signal EN that 102 send, is coupled to the second internal node X2 by the first internal node X1.
Second resistance 203 is coupled between the second internal node X2 and secondary nodal point XN, the second detection switch
Second internal node X2 is coupled to secondary nodal point XN according to status signal SM by 204.
According to one embodiment of the invention, when oneself detect device 200 operate in first mode time, the first inspection
First internal node X1 is coupled to the second internal node X2, and the second detection switch 204 by slowdown monitoring switch 202
Second internal node X2 is coupled to secondary nodal point XN.According to another embodiment of the present invention, oneself is worked as
When detection device 200 operates in the second pattern, the first internal node X1 is coupled by the first detection switch 202
To the second internal node X2, and the second detection switch 204 is not turned on.According to another embodiment of the present invention,
When oneself detect device 200 do not receive detection enable signal EN time, first detection switch 202 and
Second detection switch 204 is all not turned on.
According to one embodiment of the invention, when input voltage is between 100～120V, status signal
SM is by the second detection switch 204 conducting so that test electric current IT.According to another embodiment of the present invention,
When input voltage is between 200～240V, the second detection switch 204 is not led by status signal SM
Logical.Further, the first resistance 201 and the second resistance 203 have same impedance.
Therefore, when input voltage is 200～240V, test electric current IT flow through the first resistance 201 and
Second resistance 203, when input voltage is 100～120V, test electric current IT flows only through the first resistance 201.
It is, oneself's detection device 200 is in order to when input voltage is different voltage range, to produce identical electricity
The test electric current IT of flow valuve.
Fig. 3 is to show the circuit diagram according to the detection switch described in one embodiment of the invention.Shown in Fig. 3
Detection switch 300 is first detection switch 202 and an embodiment of the second detection switch 204 of Fig. 2.
As it is shown on figure 3, detection switch 300 has the first switching node C1, second switch node C2 and switch
Control node CT, and include optical coupling element the 301, first current-limiting resistance 302, transistor 303, first
Bias resistance 304 and the second bias resistance 305.
Optical coupling element 301 includes light emitting diode 310 and optotransistor switch 320, and optotransistor is opened
Close 320 luminous energy utilizing light emitting diode 310 to produce because flowing through glow current IL to turn on, and then will
First switching node C1 is coupled to second switch node C2.When transistor 303 turns on, glow current
IL flow to export earth lead PE_OUT from direct current supply voltage VDD, and the first current-limiting resistance 302 is in order to control
The size of glow current IL processed.Switch control node CT is coupled to control signal and through the first bias plasma
Resistance 304 and the second bias resistance 305 form an electric resistance partial pressure, in order to suitably bias transistor 303.Its
The middle purpose utilizing optical coupling element 301 can reach electrical isolation.
According to one embodiment of the invention, when needs continuity test switchs 300, switch control node CT
Input high logic level makes transistor 303 turn on.When light emitting diode 310 flows through glow current IL institute
The luminous energy produced turns on optotransistor when switching 320, and the first switching node C1 is coupled to second immediately and opens
Articulare C2.
Fig. 4 is to show the flow process according to the charging circuit self-detection method described in one embodiment of the invention
Figure.Below for the narration of the flow chart of Fig. 4, will arrange in pairs or groups Fig. 1, be described in detail.
First, detection enable signal EN (step S1) is produced according to voltage signal SV.When voltage is examined
Survey device 101 and detect the first input power cord L_IN and the input voltage of the second input power cord N_IN
And sending voltage signal SV, according to voltage signal SV, controller 102 judges that power system 110 carries
For input voltage, and output detections enable signal EN and enable oneself detects device 104.Then, Fig. 1
Controller 102 according to voltage signal SV, it is judged that input voltage be positioned at first voltage range and second electricity
The one (step S2) of pressure scope.
When input voltage is in first voltage range, oneself is detected by controller 102 utilization state signal SM
Device 104 operates in first mode (step S3), and namely the first detection switch 202 of Fig. 2 is because of inspection
Survey enable signal EN and the first internal node X1 is coupled to the second internal node X2, and the second of Fig. 2
Second internal node X2 is coupled to secondary nodal point XN because of status signal SM by detection switch 204.
When input voltage is in the second voltage range, oneself is detected by controller 102 utilization state signal SM
Device 104 operates in the second pattern (step S4), and namely the first detection switch 202 of Fig. 2 is because of inspection
Survey enable signal EN and the first internal node X1 is coupled to the second internal node X2, and the second of Fig. 2
Detection switch 204 is not turned on because of status signal SM.
In step S3 and step S4, oneself's detection device 104, according to detection enable signal EN, makes
Test electric current IT flow to the second input power cord N_IN from the primary nodal point XL of the first input power cord L_IN
Secondary nodal point XN, cause the first input power cord L_IN that current measuring element 103 detected and
The inflow current IIN of the section of the second input power cord N_IN is not equal to flow out electric current IOUT, and produces
First input power cord L_IN and the difference between current of the second input power cord N_IN.Work as current measuring element
During the difference between current that 103 detect the first input power cord L_IN and the second input power cord N_IN, produce
Raw electric leakage signal SL.According to one embodiment of the invention, oneself's detection device 104 operates in first mode
And during the second pattern, all produce identical test electric current IT.
Then, controller 102 is according to whether receive electric leakage signal SL, and judges current measuring element 103
Earth leakage detection functions whether normal (step S5).When receiving electric leakage signal SL, controller 102
Judge the earth leakage detection functions of current measuring element 103 as normal (step S6), and controller 102
Enter normal mode.When not receiving electric leakage signal SL, controller 102 judges current measuring element
The earth leakage detection functions of 103 is unsuccessfully (step S7), and controller 102 is forbidden providing input voltage
To output system 120.
The feature of many embodiments described above, enables have usually intellectual in art clear
Understand the form of this specification.Art has usually intellectual it will be appreciated that it may utilize this
Complete to be same as above-described embodiment to design or change other processing procedures and structure based on bright disclosure
Purpose and/or reach to be same as the advantage of above-described embodiment.Art also has usually intellectual
It will be appreciated that without departing from the spirit and scope of the present invention equivalent constructions can without departing from the present invention spirit and
In the range of change arbitrarily, substitute and retouch.
Claims (20)
1. a charging circuit interrupts device, it is characterised in that in order to defeated by the one first of unified power system
Enter power line and be coupled to one first out-put supply line of an output system and by the 1 of above-mentioned power system
Two input power cords are coupled to one second out-put supply line of above-mentioned output system so that above-mentioned power system carries
Supply an input voltage extremely above-mentioned output system, including:
One current measuring element, performs an earth leakage detection functions, wherein when above-mentioned first input power being detected
When one section of line and above-mentioned second input power cord has a difference between current, above-mentioned current measuring element sends
One electric leakage signal；
One oneself's detection device, produces bypass path according to a detection enable signal, and makes a test electric current
A secondary nodal point of above-mentioned second input power cord it is flow to from a primary nodal point of above-mentioned first input power cord,
Above-mentioned section is made to have above-mentioned difference between current；And
One controller, sends above-mentioned detection enable letter when controller noted above operates in oneself's detection pattern
Number,
Wherein when controller noted above receives above-mentioned electric leakage signal, controller noted above judges above-mentioned detection of electrical leakage
Function is normal, stops exporting above-mentioned detection enable signal and entering a normal mode, and by above-mentioned input voltage
There is provided to above-mentioned output system.
Charging circuit the most according to claim 1 interrupts device, it is characterised in that controller noted above
When not receiving above-mentioned electric leakage signal in a given time, controller noted above judges above-mentioned detection of electrical leakage merit
Can be failed, and forbid providing to above-mentioned output system above-mentioned input voltage.
Charging circuit the most according to claim 1 interrupts device, it is characterised in that when above-mentioned control
Device operates in above-mentioned normal mode and receives above-mentioned electric leakage signal, and controller noted above is forbidden above-mentioned input electricity
Pressure provides to above-mentioned output system, wherein when controller noted above operates in above-mentioned normal mode and does not receives
When stating electric leakage signal, above-mentioned input voltage is persistently provided to above-mentioned output system by controller noted above.
Charging circuit the most according to claim 1 interrupts device, it is characterised in that controller noted above
Judge that the voltage range of above-mentioned input voltage exports a status signal according to a voltage signal, above-mentioned oneself's inspection
Survey device and operate in a first mode or one second pattern according to above-mentioned status signal.
Charging circuit the most according to claim 4 interrupts device, it is characterised in that further include:
One voltage check device, in order to detect above-mentioned first input power cord and above-mentioned second input power cord
Above-mentioned input voltage and produce above-mentioned voltage signal, wherein controller noted above judges according to above-mentioned voltage signal
Above-mentioned input voltage is positioned at a first voltage range and the one of one second voltage range, wherein when above-mentioned defeated
Entering voltage when above-mentioned first voltage range, above-mentioned oneself's detection device operates in above-mentioned first mode, wherein
When above-mentioned input voltage is in above-mentioned second voltage range, above-mentioned oneself's detection device operates in above-mentioned second mould
Formula.
Charging circuit the most according to claim 5 interrupts device, it is characterised in that above-mentioned oneself's inspection
Survey device includes:
One first resistance, is coupled between above-mentioned primary nodal point and one first internal node；
One first detection switch, is coupled to one according to above-mentioned detection enable signal by above-mentioned first internal node
Second internal node；
One second resistance, is coupled between above-mentioned second internal node and above-mentioned secondary nodal point；And
One second detection switch, is coupled to above-mentioned the according to above-mentioned status signal by above-mentioned second internal node
Two nodes.
Charging circuit the most according to claim 6 interrupts device, it is characterised in that
When above-mentioned oneself's detection device operates in above-mentioned first mode, above-mentioned first detection switch is by above-mentioned the
One internal node is coupled to above-mentioned second internal node, and above-mentioned second detection switch is by the above-mentioned second internal joint
Point is coupled to above-mentioned secondary nodal point, wherein
When above-mentioned oneself's detection device operates in above-mentioned second pattern, above-mentioned first detection switch is by above-mentioned the
One internal node is coupled to above-mentioned second internal node, and above-mentioned second detection switch is not turned on, wherein
When controller noted above operates in above-mentioned normal mode, above-mentioned first detection switch and above-mentioned second inspection
Slowdown monitoring switch is all not turned on, wherein
In above-mentioned first mode and above-mentioned second pattern, above-mentioned oneself's detection device produces identical above-mentioned
Test electric current.
Charging circuit the most according to claim 6 interrupts device, it is characterised in that above-mentioned first inspection
Slowdown monitoring switch and above-mentioned second detection switch are respectively an optocoupler components.
Charging circuit the most according to claim 3 interrupts device, it is characterised in that further include:
One first switch, is coupled to above-mentioned the according to one first switching signal by above-mentioned first input power cord
One out-put supply line；And
One second switch, is coupled to above-mentioned according to a second switch signal by above-mentioned second input power cord
Two out-put supply lines, wherein when controller noted above operates in above-mentioned oneself's detection pattern and judges that above-mentioned electric leakage is examined
When brake is normal, controller noted above utilizes above-mentioned first switching signal and above-mentioned second switch signal by upper
State input voltage to provide to above-mentioned output system, wherein judge that above-mentioned earth leakage detection functions loses when controller noted above
When losing, controller noted above utilizes above-mentioned first switching signal and above-mentioned second switch signal-inhibiting by above-mentioned defeated
Enter voltage to provide to above-mentioned output system.
Charging circuit the most according to claim 9 interrupts device, it is characterised in that when above-mentioned control
When device operates in above-mentioned normal mode and receives above-mentioned electric leakage signal, controller noted above utilizes above-mentioned first to open
Above-mentioned input voltage is provided to above-mentioned output system, wherein by OFF signal and above-mentioned second switch signal-inhibiting
When controller noted above operates in above-mentioned normal mode and does not receives above-mentioned electric leakage signal, controller noted above profit
Persistently above-mentioned input voltage is provided to above-mentioned with above-mentioned first switching signal and above-mentioned second switch signal
Output system.
11. 1 kinds of charging circuit self-detection methods, it is characterised in that be applicable to a charging circuit and interrupt dress
Put the one first out-put supply line that one first input power cord of unified power system is coupled to an output system
And one second input power cord of above-mentioned power system is coupled to one second output of above-mentioned output system
Power line so that above-mentioned power system provides an input voltage extremely above-mentioned output system, including:
When above-mentioned charging circuit interruption device operates in oneself's detection pattern, output one detection enable letter
Number, the most above-mentioned oneself's detection pattern detects an earth leakage detection functions in order to oneself；
Utilize according to above-mentioned detection enable signal oneself's detection device to produce bypass path, make a test
Electric current flow to the one second of above-mentioned second input power cord from a primary nodal point of above-mentioned first input power cord
Node a so that section of above-mentioned first input power cord and above-mentioned second input power cord has an electric current
Difference；
When detecting that above-mentioned section has above-mentioned difference between current, produce an electric leakage signal；
When receiving above-mentioned electric leakage signal, it is judged that above-mentioned earth leakage detection functions is normal；
Above-mentioned charging circuit interruption device is operated in a normal mode；And
Above-mentioned input voltage is provided to above-mentioned output system.
12. charging circuit self-detection methods according to claim 11, it is characterised in that more wrap
Include:
Above-mentioned electric leakage signal is not received in a given time；
Judge the failure of above-mentioned earth leakage detection functions；And
Forbid providing to above-mentioned output system above-mentioned input voltage.
13. charging circuit self-detection methods according to claim 11, it is characterised in that more wrap
Include:
When above-mentioned charging circuit interruption device operates in above-mentioned normal mode and receives above-mentioned electric leakage signal,
Forbid providing to above-mentioned output system above-mentioned input voltage；And
Operate in above-mentioned normal mode when above-mentioned charging circuit interrupts device and do not receive above-mentioned electric leakage signal
Time, persistently above-mentioned input voltage is provided to above-mentioned output system.
14. charging circuit self-detection methods according to claim 11, it is characterised in that above-mentioned
Utilize above-mentioned oneself's detection device to produce the step of above-mentioned bypass path more according to above-mentioned detection enable signal
Including:
Judge that the voltage range of above-mentioned input voltage exports a status signal according to a voltage signal；And
According to above-mentioned status signal, above-mentioned oneself's detection device is operated in a first mode or one second mould
Formula.
15. charging circuit self-detection methods according to claim 14, it is characterised in that more wrap
Include:
Detect above-mentioned first input power cord and the above-mentioned input voltage of above-mentioned second input power cord and send out
Serve and state voltage signal；
Judge that above-mentioned power system is just providing above-mentioned input voltage according to above-mentioned voltage signal, export above-mentioned detection
Enable signal；
Judge that above-mentioned input voltage is positioned at a first voltage range and one second electricity according to above-mentioned voltage signal
The one of pressure scope；
When above-mentioned input voltage is in above-mentioned first voltage range, above-mentioned oneself's detection device is operated in above-mentioned
First mode；And
When above-mentioned input voltage is in above-mentioned second voltage range, above-mentioned oneself's detection device is operated in above-mentioned
Second pattern.
16. charging circuit self-detection methods according to claim 15, it is characterised in that above-mentioned
Oneself's detection device includes:
One first resistance, is coupled between above-mentioned primary nodal point and one first internal node；
One first detection switch, is coupled to one according to above-mentioned detection enable signal by above-mentioned first internal node
Second internal node；
One second resistance, is coupled between above-mentioned second internal node and above-mentioned secondary nodal point；And
One second detection switch, is coupled to above-mentioned the according to above-mentioned status signal by above-mentioned second internal node
Two nodes.
17. charging circuit self-detection methods according to claim 16, it is characterised in that more wrap
Include:
When above-mentioned oneself's detection device operates in above-mentioned first mode, utilize above-mentioned first detection switch by upper
State the first internal node and be coupled to above-mentioned second internal node, and utilize above-mentioned second detection switch by above-mentioned the
Two internal nodes are coupled to above-mentioned secondary nodal point；
When above-mentioned oneself's detection device is operated in above-mentioned second pattern, utilizing above-mentioned first detection to switch will
Above-mentioned first internal node is coupled to above-mentioned second internal node, and is not turned on above-mentioned second detection switch, its
In in above-mentioned first mode and above-mentioned second pattern, above-mentioned oneself's detection device produces identical above-mentioned survey
Examination electric current；And
When above-mentioned charging circuit interruption device operates in above-mentioned normal mode, it is not turned on above-mentioned first detection and opens
Close and above-mentioned second detection switch.
18. charging circuit self-detection methods according to claim 16, it is characterised in that above-mentioned
First detection switch and above-mentioned second detection switch are respectively an optocoupler components.
19. charging circuit self-detection methods according to claim 13, it is characterised in that more wrap
Include:
Operate in above-mentioned oneself's detection pattern when above-mentioned charging circuit interrupts device and judge above-mentioned detection of electrical leakage
When function is normal, produce one first switching signal and a second switch signal；
According to above-mentioned first switching signal and above-mentioned second switch signal, provide supreme by above-mentioned input voltage
State output system；
Operate in above-mentioned oneself's detection pattern when above-mentioned charging circuit interrupts device and judge above-mentioned detection of electrical leakage
During function failure, produce above-mentioned first switching signal and above-mentioned second switch signal；And
Utilize above-mentioned first switching signal and above-mentioned second switch signal, forbid providing above-mentioned input voltage
To above-mentioned output system.
20. charging circuit self-detection methods according to claim 19, it is characterised in that more wrap
Include:
When above-mentioned charging circuit interruption device operates in above-mentioned normal mode and receives above-mentioned electric leakage signal,
Produce above-mentioned first switching signal and above-mentioned second switch signal；
According to above-mentioned first switching signal, forbid providing to above-mentioned output system above-mentioned input voltage；
Operate in above-mentioned normal mode when above-mentioned charging circuit interrupts device and do not receive above-mentioned electric leakage signal
Time, produce above-mentioned first switching signal and above-mentioned second switch signal；And
According to above-mentioned first switching signal and above-mentioned second switch signal, persistently above-mentioned input voltage is provided
To above-mentioned output system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510262107.8A CN106300250B (en) | 2015-05-21 | 2015-05-21 | Charging circuit interruption means and charging circuit self-detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510262107.8A CN106300250B (en) | 2015-05-21 | 2015-05-21 | Charging circuit interruption means and charging circuit self-detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106300250A true CN106300250A (en) | 2017-01-04 |
| CN106300250B CN106300250B (en) | 2019-04-16 |
Family
ID=57632725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510262107.8A Active CN106300250B (en) | 2015-05-21 | 2015-05-21 | Charging circuit interruption means and charging circuit self-detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106300250B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185069A (en) * | 2020-09-29 | 2021-01-05 | 浙江工业职业技术学院 | Circuit early warning system |
| CN112714001A (en) * | 2019-10-24 | 2021-04-27 | 台达电子工业股份有限公司 | Power supply device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682203A (en) * | 2007-06-15 | 2010-03-24 | 丰田自动车株式会社 | Charging device and charging system |
| CN101755371A (en) * | 2007-07-24 | 2010-06-23 | 松下电工株式会社 | Charge monitoring device |
| TWM385104U (en) * | 2010-02-12 | 2010-07-21 | Seeker Ce Co Ltd | Safe socket |
| CN102074979A (en) * | 2009-11-20 | 2011-05-25 | 松下电工株式会社 | Feed control device |
| US20120146655A1 (en) * | 2010-12-10 | 2012-06-14 | Raritan Americas, Inc. | Methods and apparatus for sensing ground leakage and automated self testing thereof |
| US8405939B2 (en) * | 2010-03-08 | 2013-03-26 | Pass & Seymour, Inc. | Protective device for an electrical supply facility |
-
2015
- 2015-05-21 CN CN201510262107.8A patent/CN106300250B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101682203A (en) * | 2007-06-15 | 2010-03-24 | 丰田自动车株式会社 | Charging device and charging system |
| CN101755371A (en) * | 2007-07-24 | 2010-06-23 | 松下电工株式会社 | Charge monitoring device |
| CN102074979A (en) * | 2009-11-20 | 2011-05-25 | 松下电工株式会社 | Feed control device |
| TWM385104U (en) * | 2010-02-12 | 2010-07-21 | Seeker Ce Co Ltd | Safe socket |
| US8405939B2 (en) * | 2010-03-08 | 2013-03-26 | Pass & Seymour, Inc. | Protective device for an electrical supply facility |
| US20120146655A1 (en) * | 2010-12-10 | 2012-06-14 | Raritan Americas, Inc. | Methods and apparatus for sensing ground leakage and automated self testing thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112714001A (en) * | 2019-10-24 | 2021-04-27 | 台达电子工业股份有限公司 | Power supply device |
| CN112185069A (en) * | 2020-09-29 | 2021-01-05 | 浙江工业职业技术学院 | Circuit early warning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106300250B (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9762049B2 (en) | Ground fault circuit interrupter (GFCI) monitor | |
| CN108701987B (en) | Error current limiter and method thereof | |
| CN105425144A (en) | Relay fault detection circuit and fault detection method thereof | |
| CN102890235A (en) | Fault detection method and device | |
| CN102457042A (en) | Novel electricity leakage detection protection circuit | |
| JP6921213B2 (en) | Thyristor valve test system based on software logic function linkage | |
| CN109254245A (en) | A kind of short circuit of relay circuit and open detection circuit | |
| CN105527521A (en) | Relay protection device verification auxiliary equipment and monitoring system | |
| CN106300250A (en) | Charging circuit interrupts device and charging circuit self-detection method | |
| CN106505739B (en) | A kind of control loop with self-checking function | |
| TWI740940B (en) | Fault current limiter and method thereof | |
| CN106291328A (en) | A kind of spacecraft switch matrix fault detect and positioner | |
| CN107271827A (en) | Electric-leakage detection circuit and RCCB | |
| TWI554002B (en) | Charging circuit interrupting devices and methods for self-testing charging circuit interrupting devices | |
| CN107481541A (en) | A kind of signal lamp driver overlaps fault detection method | |
| CN109845403A (en) | Especially it is used for the LED light device of vehicle | |
| CN106200508B (en) | A kind of interlock protection control circuit | |
| CN106026054B (en) | One kind outputing self-checking circuit | |
| CN106199306B (en) | System and method for checking loop state monitoring device | |
| CN106953300A (en) | A kind of protective circuit of switch power source and display device | |
| CN204807641U (en) | Electronic load detection circuitry and control system who has electronic load detection function | |
| CN114784752B (en) | Leakage protection device and detection method thereof | |
| CN109406998A (en) | A kind of test device and test method of nonpolarity stem grafting dot circuit | |
| JPH08236280A (en) | Lighting system | |
| CN103576037B (en) | Based on the method for testing of hydrogenerator microcomputer protecting device intelligence test platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |