CN209167491U - A kind of detection case - Google Patents
A kind of detection case Download PDFInfo
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- CN209167491U CN209167491U CN201821947879.0U CN201821947879U CN209167491U CN 209167491 U CN209167491 U CN 209167491U CN 201821947879 U CN201821947879 U CN 201821947879U CN 209167491 U CN209167491 U CN 209167491U
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Abstract
The utility model embodiment discloses a kind of detection case.Wherein, which includes: cabinet；Positioned at the first circuit unit of tank surface, including external power source interface, at least one first manipulation switch and detection interface；It is located in the box body the second circuit component in portion, comprising: first voltage conversion circuit and trigger signal generative circuit；Wherein, the input terminal of first voltage conversion circuit is electrically connected with external power source interface, the output end of first voltage conversion circuit is electrically connected with the feeder ear of trigger signal generative circuit, the output end of trigger signal generative circuit is electrically connected with detection interface, at least one first manipulation switch is series on external power source interface, first voltage conversion circuit, trigger signal generative circuit and the access of detection interface electrical connection.The high efficiency off-line detection to the drive circuit board performance of power switch tube may be implemented in the technical solution of the utility model embodiment.
Description
Technical field
The utility model relates to detection technique field more particularly to a kind of detection cases.
Background technique
With the development of science and technology with the promotion of people's environmental consciousness, clean energy resource obtained more and more extensive answer
With.Wherein, since wind is a kind of renewable, pollution-free and big reserves energy, wind-power electricity generation possesses huge development potentiality.
The drive circuit board of current transformer in Wind turbines in extreme natural environments such as thunderstorm, tripping, strong wind, salt fogs and
Under power grid environment, the drive circuit board of current transformer is easy to happen the failures such as operation troubles, component damage and short circuit breakdown.At present
The detection of drive circuit board generallys use multimeter static detection, in order to detect drive circuit board performance, is directly installed on sometimes
It is detected in wind power unit converter, Wind turbines is operated as detection platform, to the safe operation band of Wind turbines
Come greatly dangerous.To meet offline inspection driving plate, and the troubleshooting efficiency to drive circuit board is improved, one need to be designed
Kind is used for the fault detection means of offline inspection driving plate.
Utility model content
The utility model embodiment provides a kind of detection case, with realize to the drive circuit board performance of power switch tube from
Line detection, and improve the fault detection efficiency to drive circuit board.
The utility model embodiment provides a kind of detection case, examines for the drive circuit board to power switch tube
Survey, comprising: cabinet, positioned at tank surface the first circuit unit and be located in the box body the second circuit component in portion,
First circuit unit includes external power source interface, at least one first manipulation switch and detection interface；
Second circuit component includes: first voltage conversion circuit and trigger signal generative circuit；
Wherein, external power source interface, for accessing external power supply；
The input terminal of first voltage conversion circuit is electrically connected with external power source interface, the output end of first voltage conversion circuit
It is electrically connected with the feeder ear of trigger signal generative circuit, the output end of trigger signal generative circuit and first voltage conversion circuit
Output end is electrically connected with multiple connecting terminals one-to-one correspondence of detection interface respectively,
First voltage conversion circuit is used to for the voltage of the external power supply of input to be converted into the first DC voltage, exports to it
Output end；
At least one first manipulation switch is series at external power source interface, first voltage conversion circuit, trigger signal and generates
On circuit and the access of detection interface electrical connection.
Further, the first circuit unit further includes the second manipulation switch, third manipulation switch, voltage output interface and the
One ammeter；Second circuit component further include: second voltage conversion circuit, first resistor and tertiary voltage conversion circuit；
The input terminal of second voltage conversion circuit is electrically connected through the second manipulation switch with external power source interface, and second voltage turns
The output end for changing circuit is electrically connected through first resistor with voltage output interface；Second voltage conversion circuit is used for external power supply
Voltage is converted into the second DC voltage, output to its output end；
The input terminal of tertiary voltage conversion circuit is electrically connected through third manipulation switch with external power source interface, and tertiary voltage turns
The output end for changing circuit is electrically connected with the feeder ear of the first ammeter；
Tertiary voltage conversion circuit is used to for the voltage of the external power supply of input to be converted into third DC voltage, exports to it
Output end；
Two measurement terminals of the first ammeter are series at output end, first resistor and the voltage of second voltage conversion circuit
On the access of output interface electrical connection.
Further, at least one first manipulation switch includes self-locking button switch and self-resetting button switch, self-locking to press
The both ends of the parallel branch formed after button switch and self-resetting button switch are in parallel are series at first voltage conversion circuit, triggering
On signal generating circuit and the access of detection interface electrical connection.
Further, the output end of first voltage conversion circuit includes positive pressure output end and negative pressure output end, trigger signal
The feeder ear of generative circuit includes positive pressure feeder ear and negative pressure feeder ear, respectively with the positive pressure output end of first voltage conversion circuit
It is electrically connected with negative pressure output end,
First voltage conversion circuit is used to the voltage of the external power supply of input being converted into two-way polarity opposite magnitude identical
DC voltage, output is to its positive pressure output end and negative pressure output end, and trigger signal generative circuit is for exporting bipolar square wave
Trigger signal.
Further, trigger signal generative circuit includes unipolarity square wave signal generator and control panel；
The feeder ear of unipolarity square wave signal generator is electrically connected with the positive pressure feeder ear of trigger signal generative circuit, monopole
The output end of property square wave signal generator is electrically connected with the input terminal of control panel,
The positive pressure feeder ear and negative pressure feeder ear of control panel respectively with the positive pressure feeder ear of trigger signal generative circuit and negative
Feeder ear electrical connection is pressed, the output end of control panel is electrically connected with the output end of trigger signal generative circuit, and control panel is used for will be defeated
The unipolarity square-wave signal of the unipolarity square wave signal generator entered is converted into frequency and duty ratio bipolar square wave all the same
Signal.
Further, at least one first manipulation switch includes air switch, and air switch is series at first voltage conversion
On the access that the input terminal of circuit is electrically connected with external power source interface.
Further, at least one first manipulation switch further include ship type switch, ship type switch be series at air switch with
On the access of first voltage conversion circuit electrical connection；
First circuit unit further includes indicator light, and indicator light is connected to air switch and switchs the access being electrically connected with ship type
On.
Further, the first circuit unit further includes voltmeter and the first fuse, feeder ear and the third electricity of voltmeter
The output end of voltage conversion circuit is electrically connected, and the first fuse is series at the output end and first resistor electricity of second voltage conversion circuit
Between the access of connection, two measurement terminals of voltmeter are parallel to the both ends after first resistor and voltage output interface tandem.
Further, the first circuit unit further includes the second fuse and third fuse, and the second fuse is series at
On the access of the positive pressure feeder ear electrical connection of the positive pressure output end and trigger signal generative circuit of one voltage conversion circuit, third is protected
Dangerous silk is series at the negative pressure feeder ear electrical connection of the negative pressure output end and trigger signal generative circuit of first voltage conversion circuit
On access.
Further, which further includes case lid, and case lid is connect with body pivot, and the first circuit unit is set to cabinet
The same face on, case lid is for covering the surface that cabinet is provided with the first circuit unit.
First circuit unit by being set to the surface of cabinet by the technical solution of the utility model embodiment, by the second electricity
Road component is set to the inside of cabinet, wherein the first circuit unit includes external power source interface, at least one first manipulation switch
With detection interface；Second circuit component includes: first voltage conversion circuit and trigger signal generative circuit；Wherein, external power supply
Interface is for accessing external power supply；The input terminal of first voltage conversion circuit is electrically connected with external power source interface, and first voltage turns
The output end for changing circuit is electrically connected with the feeder ear of trigger signal generative circuit, the output end of trigger signal generative circuit and first
The output end of voltage conversion circuit is electrically connected with multiple connecting terminals one-to-one correspondence of detection interface respectively, first voltage conversion electricity
Road is used to for the voltage of the external power supply of input being converted into the first DC voltage, output to its output end；At least one first behaviour
Vertical switch is series at external power source interface, first voltage conversion circuit, trigger signal generative circuit and detection interface electrical connection
On access, the offline inspection to the drive circuit board performance of power switch tube may be implemented, avoid directly Wind turbines unsteady flow
Device is as detection platform, to detect to the performance of drive circuit board, brings great danger to the safe operation of Wind turbines
Danger, and relative in such a way that multimeter carries out offline static detection to drive circuit board, it can be improved to drive circuit board
Fault detection efficiency.
Detailed description of the invention
Fig. 1 is a kind of circuit connection diagram of detection case provided by the embodiment of the utility model；
Fig. 2 is a kind of external structure schematic diagram of detection case provided by the embodiment of the utility model；
Fig. 3 is provided by the embodiment of the utility model a kind of for carrying out the circuit of offline fault detection to drive circuit board
Connection schematic diagram；
Fig. 4 is the waveform signal of the input terminal and output end of a kind of drive circuit board provided by the embodiment of the utility model
Figure；
Fig. 5 is the circuit connection diagram of another detection case provided by the embodiment of the utility model；
Fig. 6 be it is provided by the embodiment of the utility model another be used to carry out drive circuit board the electricity of offline fault detection
Road connection schematic diagram；
Fig. 7 is a kind of electrical block diagram of IGBT template provided by the embodiment of the utility model；
Fig. 8 is the circuit connection diagram of another detection case provided by the embodiment of the utility model；
Fig. 9 is a kind of waveform diagram of unipolarity square wave signal generator output provided by the embodiment of the utility model；
Figure 10 is a kind of local circuit connection schematic diagram of detection case provided by the embodiment of the utility model；
Figure 11 is a kind of overlooking structure diagram of detection case provided by the embodiment of the utility model；
Figure 12 is the external structure schematic diagram of another detection case provided by the embodiment of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.
The utility model embodiment provides a kind of detection case.Fig. 1 is a kind of detection case provided by the embodiment of the utility model
Circuit connection diagram.Fig. 2 is a kind of external structure schematic diagram of detection case provided by the embodiment of the utility model.The detection
Case can be used for detecting the drive circuit board of power switch tube.Referring to figs. 1 and 2, which includes: cabinet
100, the second circuit component positioned at first circuit unit on 100 surface of cabinet and inside cabinet 100.
Wherein, the first circuit unit includes that external power source interface 210, at least one first manipulation switch 220 and detection connect
Mouth 230；Second circuit component includes: first voltage conversion circuit 310 and trigger signal generative circuit 320；Wherein, external power supply
Interface 210, for accessing external power supply 400；210 electricity of input terminal In1 and external power source interface of first voltage conversion circuit 310
Connection, the output end Out1 of first voltage conversion circuit 310 are electrically connected with the feeder ear V1 of trigger signal generative circuit 320, are touched
The output end Out1 of the output end S1 of signalling generative circuit 320 and first voltage conversion circuit 310 respectively with detection interface 230
Multiple connecting terminals correspond electrical connection, first voltage conversion circuit 310 is used for the voltage of external power supply 400 that will be inputted
It is converted into the first DC voltage, output to its output end Out1；At least one first manipulation switch 220 is series at external power supply and connects
On the access that mouth 210, first voltage conversion circuit 310, trigger signal generative circuit 320 and detection interface 230 are electrically connected.
It should be noted that power switch tube can be insulated gate bipolar transistor (Insulated Gate
Bipolar Transistor, IGBT) or power field effect transistor (Metal Oxide Semiconductor, MOS).Wind
The main circuit of current transformer in motor group generally includes multiple power switch tubes, and required bridge is formed after being electrically connected with predetermined manner
Formula circuit, and reach at least one of rectification, inversion and frequency conversion function.Drive circuit board when being installed in blower fan group,
Multiple output ends of drive circuit board can grid corresponding at least one power switch tube and source electrode electrical connection, to power switch
Pipe output drive signal, to control the turn-on and turn-off of power switch tube.Fig. 1 illustratively draws the first manipulation switch 220 string
Situation about being coupled on the access being electrically connected between external power source interface 210 and first voltage conversion circuit 310；Optionally, first
Manipulation switch 220 can also be series at the access being electrically connected between first voltage conversion circuit 310 and trigger signal generative circuit 320
On；Optionally, the first manipulation switch 220 can also be series between trigger signal generative circuit 320 and detection interface 230 and be electrically connected
Access on；The utility model embodiment is not construed as limiting this, can voluntarily select as needed.Pass through control the first manipulation switch
Whether 220 closure and disconnection, controllable detection interface 230 export trigger signal and/or the first DC voltage.The detection case can
To be aluminium alloy detection case.First voltage conversion circuit 310 can be Switching Power Supply.The Switching Power Supply may include rectification circuit
And direct-current voltage reducing circuit.The direct-current voltage reducing circuit can be circuit of reversed excitation or forward converter etc..
Fig. 3 is provided by the embodiment of the utility model a kind of for carrying out the circuit of offline fault detection to drive circuit board
Connection schematic diagram.Fig. 4 is that a kind of input terminal of drive circuit board provided by the embodiment of the utility model and the waveform of output end show
It is intended to.Wherein, horizontal axis indicates that time t, the longitudinal axis respectively indicate the signal s1 and driving electricity of the input terminal input of drive circuit board 500
The signal s3 of the output end output of road plate.Before being detected to the drive circuit board being not mounted in blower fan group, will first own
First manipulation switch 220 gets to open position, is then attached according to connection type shown in Fig. 3, by external power supply 400
(such as can be alternating current) by conducting wire access external power source interface 210 (such as can be Chinese character pin-shaped socket, can respectively with city
Electricity firewire L, zero curve N and be electrically connected to ground), by the input terminal of drive circuit board 500 by conducting wire access detect interface 230,
By two output ends of the probe access drive circuit board 500 of oscillograph 600 (for the grid with a MOS power switch tube
With the two-terminal of source electrode electrical connection).Then by the first manipulation closure of switch 220, trigger signal generative circuit 320 is by the tool of generation
There is the trigger signal of the square of certain duty ratio (the signal s1 of the input terminal input of drive circuit board to be equivalent to, in Fig. 4
The waveform of s1 signal) it is input to the input terminal of drive circuit board 500, if the waveform that oscillograph 600 is shown is with identical duty
The bipolar square wave (the signal s3 of the output end output of drive circuit board being equivalent to, such as the waveform of s3 signal in Fig. 4) of ratio, then say
Bright currently detected 500 function of drive circuit board is normal, i.e., non-failure；If the waveform that oscillograph 600 is shown is non-with identical
The bipolar square wave of duty ratio then illustrates 500 failure of drive circuit board being currently detected, and can be shown according to oscillograph 600
Fault waveform determines the failure cause of drive circuit board 500.It should be noted that drive circuit board 500 may include multichannel driving
Sub-circuit is corresponded with multiple power switch tubes.Trigger signal generative circuit 320 can be with output multi-channel trigger signal, with logical
Detection interface is crossed to be electrically connected with multichannel drive sub-circuits.The number and drive for the trigger signal that trigger signal generative circuit 320 exports
The number of the drive sub-circuits of dynamic circuit board 500 can be equal or different.It can be as needed to detection interface and drive sub-circuits
It is attached, to complete the fault detection to entire drive circuit board.Each road drive sub-circuits can be carried out one by one respectively above-mentioned
Detection, to complete the fault detection to entire drive circuit board.It, can be by the after completing to the fault detection of entire drive circuit board
One manipulation switch 220 gets to open position, and drive circuit board is disassembled from detection case.
The technical solution of the present embodiment is set second circuit component by the way that the first circuit unit to be set to the surface of cabinet
It is placed in the inside of cabinet, wherein the first circuit unit includes that external power source interface, at least one first manipulation switch and detection connect
Mouthful；Second circuit component includes: first voltage conversion circuit and trigger signal generative circuit；Wherein, external power source interface is used for
Access external power supply；The input terminal of first voltage conversion circuit is electrically connected with external power source interface, first voltage conversion circuit
Output end is electrically connected with the feeder ear of trigger signal generative circuit, output end and the first voltage conversion of trigger signal generative circuit
The output end of circuit is electrically connected with multiple connecting terminals one-to-one correspondence of detection interface respectively, and first voltage conversion circuit is used for will
The voltage of the external power supply of input is converted into the first DC voltage, output to its output end；At least one first manipulation switch series
It is coupled on external power source interface, first voltage conversion circuit, trigger signal generative circuit and the access of detection interface electrical connection, it can
To realize to the offline inspection of the drive circuit board performance of power switch tube, avoid directly wind power unit converter as detection
Platform brings great danger to the safe operation of Wind turbines to detect to the performance of drive circuit board, and relative to
In such a way that multimeter carries out offline static detection to drive circuit board, the fault detection effect to drive circuit board can be improved
Rate.
The utility model embodiment provides another detection case.Fig. 5 is another inspection provided by the embodiment of the utility model
The circuit connection diagram of measuring tank.On the basis of the above embodiments, as shown in figure 5, the first circuit unit further includes the second behaviour
Vertical switch 240, third manipulation switch 270, voltage output interface 250 and the first ammeter 260；Second circuit component further include:
Second voltage conversion circuit 330, first resistor R1 and tertiary voltage conversion circuit 340.
Wherein, the input terminal In2 of second voltage conversion circuit 330 is through the second manipulation switch 240 and external power source interface 210
Electrical connection, the output end Out2 of second voltage conversion circuit 330 are electrically connected through first resistor R1 with voltage output interface 250；The
Two voltage conversion circuits 330 are used to for the voltage of external power supply 210 being converted into the second DC voltage, output to its output end
Out2；The input terminal In3 of tertiary voltage conversion circuit 340 is electrically connected through third manipulation switch 270 with external power source interface 210,
The output end Out3 of tertiary voltage conversion circuit 340 is electrically connected with the feeder ear V2 of the first ammeter 260；Tertiary voltage conversion electricity
Road 340 is used to for the voltage of the external power supply 210 of input being converted into third DC voltage, output to its output end Out3；First
Two measurement terminals d1 and d2 of ammeter 260 are series at the output end Out2 of second voltage conversion circuit 330, first resistor R1
On the access being electrically connected with voltage output interface 250.
Wherein, second voltage conversion circuit 330 can be Switching Power Supply.It is straight that the absolute value of second DC voltage is greater than first
The absolute value of galvanic electricity pressure.Tertiary voltage conversion circuit 340 can be Switching Power Supply.First ammeter 260 can be double aobvious voltages
Ammeter.Two the measurement terminals d1 and d2 that Fig. 5 illustratively draws the first ammeter 260 are series at first resistor R1 and voltage
The situation on access being electrically connected between output interface 250；Optionally, two measurement terminals d1 and d2 of the first ammeter 260
It can also be series on the access being electrically connected between the output end Out2 of second voltage conversion circuit 330 and first resistor R1.The
Two manipulation switches 240 and third manipulation switch 270 can be ship type switch.By control second manipulation switch 240 closure and
It disconnects, whether controllable voltage output interface 250 exports the second DC voltage.The closure of switch 270 is manipulated by control third
With disconnection, whether controllable first ammeter 260 works.
Fig. 6 be it is provided by the embodiment of the utility model another be used to carry out drive circuit board the electricity of offline fault detection
Road connection schematic diagram.Fig. 7 is a kind of electrical block diagram of IGBT template provided by the embodiment of the utility model.It can first pass through
Whether the connection type of Fig. 3 is attached, normal with the output waveform for detecting drive circuit board 500 by oscillograph 600, is
No is bipolar square wave.If the output waveform of drive circuit board 500 is normal, all first manipulation switches 220, second are manipulated
Switch 240 and third manipulation switch 270 get to open position, are then attached, will drive according to connection type shown in fig. 6
The output end of dynamic circuit board 500 is electrically connected with the grid of IGBT power switch tube and emitter, by voltage output interface 250
It is electrically connected with the collector and emitter of IGBT power switch tube.The first manipulation switch 220, second is then manipulated into switch 240
It is closed with third manipulation switch 270, the second DC voltage that voltage output interface 250 exports is applied to IGBT power switch tube
Collector and emitter, trigger signal generative circuit 320 is by the trigger signal of the square with certain duty ratio of generation
It is input to the input terminal of drive circuit board 500, the output end of drive circuit board 500 is by output drive signal to IGBT power switch
Pipe, to control the turn-on and turn-off of IGBT power switch tube, the first ammeter 260 will test the electricity for flowing through IGBT power switch tube
The virtual value of stream, and according to the show value of the first ammeter 260, determine whether the conducting function of IGBT power switch tube is normal.
If the show value of the first ammeter 260 is equal to prospective current value, the conducting function of IGBT power switch tube is normal, otherwise,
The conducting dysfunction of IGBT power switch tube.First resistor R1 plays metering function.It should be noted that IGBT template 800 can
Including multiple power switch tubes 700.After completing to the detection of a power switch tube, the first manipulation switch 220, second can be grasped
Vertical switch 240 and third manipulation switch 270 get to open position, and power switch tube is disassembled from detection case, then connects
Connect another power switch tube to be measured.The number of power switch tube in IGBT template 800 and driving of drive circuit board 500
The number of circuit can be equal or different.Power switch tube and drive sub-circuits can be attached as needed, with completion pair
The detection of the conducting function of entire IGBT template.Above-mentioned detection can be carried out one by one to power switch tube respectively, to complete to entire
The detection of the conducting function of IGBT template.After completing to the detection of entire IGBT template, switch 220, second can be manipulated by first
Manipulation switch 240 and third manipulation switch 270 get to open position, and drive circuit board and IGBT template are torn open from detection case
It unloads down.It should be noted that above-mentioned detection process could be applicable to MOS power switch tube etc..
Fig. 8 is the circuit connection diagram of another detection case provided by the embodiment of the utility model.In above-described embodiment
On the basis of, the output end of first voltage conversion circuit 310 includes positive pressure output end Out1+ and negative pressure output end Out1-, triggering
The feeder ear of signal generating circuit 320 includes positive pressure feeder ear V1+ and negative pressure feeder ear V1-, converts electricity with first voltage respectively
The positive pressure output end Out1+ and negative pressure output end Out1- on road 310 are electrically connected, what first voltage conversion circuit 310 was used to input
The voltage of external power supply 400 is converted into the identical DC voltage of two-way polarity opposite magnitude, output to its positive pressure output end Out1+
With negative pressure output end Out1-, trigger signal generative circuit 320 is for exporting bipolar square wave trigger signal.
The utility model embodiment provides another detection case.On the basis of the above embodiments, with continued reference to Fig. 8, touching
Signalling generative circuit 320 includes unipolarity square wave signal generator 321 and control panel 322.
Wherein, the positive pressure of the feeder ear V3 of unipolarity square wave signal generator 321 and trigger signal generative circuit 320 is powered
V1+ electrical connection is held, the output end of unipolarity square wave signal generator 321 is electrically connected with the input terminal of control panel 322, control panel
322 positive pressure feeder ear V4+ and negative pressure feeder ear V4- respectively with the positive pressure feeder ear V1+ of trigger signal generative circuit 320 and negative
Feeder ear V1- electrical connection is pressed, the output end of control panel 322 is electrically connected with the output end S1 of trigger signal generative circuit 320, is controlled
The unipolarity square wave signal generator 321 that plate 322 is used to input unipolarity square-wave signal (waveform of s2 signal in such as Fig. 9,
Wherein,
Fig. 9 is a kind of waveform diagram of unipolarity square wave signal generator output provided by the embodiment of the utility model),
It is converted into frequency and duty ratio bipolar square wave signal all the same.
Wherein, the model of the control panel 322 can be 107W7460P001.The model of the drive circuit board 500 can be
IS200AEBM。
Optionally, on the basis of the above embodiments, with continued reference to Fig. 8, at least one first manipulation switch includes self-locking
Button switch 221 and self-resetting button switch 222 are formed after 222 parallel connection of self-locking button switch 221 and self-resetting button switch
The both ends of parallel branch are series at first voltage conversion circuit 310, trigger signal generative circuit 320 and detection interface 230 and are electrically connected
On the access connect.
Wherein, Fig. 8 illustratively draw it is being formed after 222 parallel connection of self-locking button switch 221 and self-resetting button switch and
The both ends for joining branch, are series on the access being electrically connected between unipolarity square wave signal generator 321 and control panel 322, optional
, the both ends of the parallel branch formed after 222 parallel connection of self-locking button switch 221 and self-resetting button switch can also be series at
On the access being electrically connected between first voltage conversion circuit 310 and trigger signal generative circuit 320；Optionally, locking press button is opened
The both ends for closing the parallel branch formed after 221 and 222 parallel connection of self-resetting button switch can also be series at trigger signal and generate electricity
On the access being electrically connected between road 320 and detection interface 230.Self-locking button switch has self-locking function, i.e., in first time by self-locking
When the button of button switch, self-locking button switch is connected and is kept, i.e., self-locking, is then unclamped, and self-locking button switch still keeps connecing
Logical, when pressing the button of self-locking button switch at second and then unclamping, self-locking button switch is disconnected, while button pop-up comes.From
When reset button switch has runback bit function, the i.e. button of pressing self-resetting button switch, self-resetting button switch is connected, and is unclamped
When the button of self-resetting button switch, self-resetting button switch is disconnected.
Wherein, when carrying out the performance of detection drive circuit board 500 after according to the connection of the connection type of Fig. 3, can pass through
Self-locking button switch 221 is pressed, so that trigger signal generative circuit 320 persistently exports the trigger signal of square, with convenient
The output waveform of the drive circuit board 500 of observation oscilloscope detection.After according to the connection of the connection type of Fig. 6, to IGBT template
Carry out performance detection when, can by press self-resetting button switch 222, so as to the power switch tube of current detection be damage
When (generally short-circuit), high current can be flowed through, self-resetting button switch 222 can be unclamped in time, so that trigger signal generates electricity
Road 320 stops the trigger signal of output square, and then detection case is protected not to be burned.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 8, at least one first manipulation switch includes air
Switch 223, air switch 223 is series at the input terminal of first voltage conversion circuit 310 and external power source interface 210 is electrically connected
On access.By controlling the closure and disconnection of air switch 223, whether can control the work of first voltage conversion circuit 310.It is empty
Air cock also has the function of overcurrent and under-voltage protection.It, will be certainly when the electric current for flowing through air switch is more than default rated current
Dynamic circuit breaker is opened.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 8, at least one first manipulation switch further includes ship
Type switch 224, ship type switch 224 are series on the access that air switch 223 is electrically connected with first voltage conversion circuit 310.It is logical
The closure and disconnection of control ship type switch 224 are crossed, whether can control the work of first voltage conversion circuit 310.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 8, the first circuit unit further includes indicator light 280,
Indicator light 280 is connected on the access that air switch 223 is electrically connected with ship type switch 224.Indicator light 280 is through air switch 223
It is electrically connected with external power source interface 210.When accessing external power supply 400 and air switch 223 is closed, indicator light 280 shines, and says
The power supply of bright external power supply 400 is normal, can continue to be closed other manipulation switches, to be detected.
Figure 10 is a kind of local circuit connection schematic diagram of detection case provided by the embodiment of the utility model.In above-mentioned implementation
On the basis of example, the first circuit unit further includes voltmeter 290 and the first fuse F1, the feeder ear V5 of voltmeter 290 and the
The output end Out3 of three voltage conversion circuits 340 is electrically connected, and the first fuse F1 is series at the defeated of second voltage conversion circuit 330
Between the access of outlet Out2 and first resistor R1 electrical connection, two measurement terminals d3 and d4 of voltmeter 290 are parallel to first
Resistance R1 connect with voltage output interface 250 after both ends.
Wherein, the first fuse F1 has the function of overcurrent protection.By being arranged the first fuse F1 in detection case 100
Surface, to facilitate the first fuse F1 that will be burnt out to replace.Voltmeter 290 can be double aobvious voltage flow tables.Voltmeter
290 can be used for detecting second voltage conversion circuit 330 output voltage it is whether normal, if the show value of voltmeter 290 be equal to it is pre-
Phase voltage value then illustrates that second voltage conversion circuit 330 works normally, otherwise, illustrate second voltage conversion circuit 330 it is abnormal or
Failure.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 8, the first circuit unit further includes the second fuse
F2 and third fuse F3, the second fuse F2 are series at positive pressure output end Out1+ and the triggering of first voltage conversion circuit 310
On the access of the positive pressure feeder ear V1+ electrical connection of signal generating circuit 320, third fuse F3 is series at first voltage conversion electricity
On the access of the negative pressure feeder ear V1- electrical connection of the negative pressure output end Out1- and trigger signal generative circuit 320 on road 310.
Wherein, the second fuse F2 and third fuse F3 have the function of overcurrent protection.By by the second fuse F2
The surface of detection case 100 is set with third fuse F3, to facilitate the second fuse F2 and third fuse F3 that will burn out
It is replaced.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 8, the first circuit unit further includes the second ammeter
262, the feeder ear V6 of the second ammeter 262 is electrically connected with the output end Out2 of second voltage conversion circuit 330, the second ammeter
A 262 measurement terminal d5 is electrically connected with common ground G, the ground terminal and control panel of unipolarity square wave signal generator 321
322 ground terminal is electrically connected with another measurement terminal d6 of the second ammeter 262.Second ammeter 262 can be double aobvious
Volometer.
Optionally, on the basis of the above embodiments, with continued reference to Fig. 8, at least one first manipulation switch further includes the
Two air switches 225, wherein the first end of the second air switch 225 is electrically connected to air switch 223 and third manipulation switchs
The electrical node of 270 electrical connections, the second end of the second air switch 225 is electrically connected to ship type switch 224 and the second manipulation switchs
The electrical node of 240 electrical connections.Second air switch 225 has the function of overload and under-voltage protection, can disconnect rear class in time
Circuit, when avoiding first voltage conversion circuit 310 and second voltage conversion circuit 330 from the sum of exporting situations such as excessive occurring, meeting
Damage circuit.Air switch 223 detection case integrated circuit output overloading and it is under-voltage when, late-class circuit can be disconnected in time, rise
To protective effect.It is disconnected by control air switch 223, controllable all circuits of detection case stop working.Pass through control the
Two air switches 225 disconnect, and controllable first voltage conversion circuit 310 and second voltage conversion circuit 330 stop working.
Optionally, Figure 11 is a kind of overlooking structure diagram of detection case provided by the embodiment of the utility model, above-mentioned
On the basis of embodiment, the first circuit unit is set on the same face (such as surface 101) of cabinet.As shown in figure 11, the cabinet
The surface 101 for being provided with the first circuit unit on be additionally provided with detection zone 510 for placing drive circuit board, to facilitate pair
Drive circuit board carries out offline fault detection.
It should be noted that need to carry out armed setting to the first circuit unit on detection case before starting detection, so as to
Late detection.In conjunction with shown in Fig. 8, Figure 10 and Figure 11, need self-locking button switch 221, self-resetting button switch 222, air
Switch 223, the second air switch 225, ship type switch 224, second manipulate switch 240, third manipulation switch 270 gets to disconnection
Position；Check whether the first fuse F1, the second fuse F2 and third fuse F3 are normal；Then it carries out wiring and detects.
After being attached according to the connection type of Fig. 3, it is closed air switch 223, indicator light 280 is bright；It is closed third and manipulates switch 270,
First ammeter 260, voltmeter 290 and the second ammeter 262 are started to work, the second air switch 225 of closure, ship type switch
224 and second manipulate switch 240, press self-locking button switch 221, make self-locking button switch 221, to pass through oscillograph
Whether whether each road drive sub-circuits output waveform of 600 detection drive circuit boards 500 is normal, i.e., be bipolar square wave.If driving
The output waveform of dynamic circuit board 500 is normal, then by self-locking button switch 221, self-resetting button switch 222, ship type switch 224,
Second manipulation switch 240, third manipulation switch 270 get to open position, are then connected according to connection type shown in fig. 6
Connect, then by second manipulation switch 240 and third manipulation switch 270 closure, 290 show value of voltmeter be expection voltage value, first
The show value of ammeter 260 is 0, and trigger signal generative circuit is closed without output, then by ship type switch 224 at this time, Continued depression
Self-resetting button switch 222, at this point, trigger signal generative circuit exports trigger signal, the show value of the first ammeter 260 is pre-
Phase current value illustrates that the power switch tube conducting function is normal.Such testing principle completes the conducting function to entire IGBT template
The detection of energy.
The utility model embodiment provides another detection case.Figure 12 is another inspection provided by the embodiment of the utility model
The external structure schematic diagram of measuring tank.On the basis of the above embodiments, which further includes case lid 110, case lid 110 and cabinet
100 rotation connections, the first circuit unit are set on the same face (such as surface 101) of cabinet 100, and case lid 110 is for covering case
Body 100 is provided with the surface of the first circuit unit.Before carrying out offline fault detection to drive circuit board, case lid 110 is turned over
It opens and goes to the side far from surface 101, it, can be 110 turns by case lid after completing to carry out offline fault detection to drive circuit board
To the position opposite with surface 101, to cover surface 101.
Detection case provided by the embodiment of the utility model, which can be realized, can be carried out the independent progressive of drive circuit board
Detection；It can be realized and carry out performance detection after combining to drive circuit board with IGBT module；The scene of capable of being greatly decreased is driving
Damaged condition in circuit board use improves troubleshooting efficiency；Be conducive to large-scale production drive circuit board, and improve use and work as
In deficiency, promoted properties of product.
It should be noted that be electrically connected between the electrical node with same tag, such as N1, N2, N3 and G, such as
It indicates between the terminal of N1 label to be electrically connected, indicating is to be electrically connected between the electrical node of N2 label.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation is readjusted, be combined with each other and is substituted without departing from the protection scope of the utility model.Therefore, although passing through
Above embodiments are described in further detail the utility model, but the utility model is not limited only to the above implementation
Example can also include more other equivalent embodiments in the case where not departing from the utility model design, and the utility model
Range is determined by the scope of the appended claims.
Claims (10)
1. a kind of detection case is detected for the drive circuit board to power switch tube characterized by comprising cabinet, position
The first circuit unit in the tank surface and the second circuit component positioned at the box house,
First circuit unit includes external power source interface, at least one first manipulation switch and detection interface；
The second circuit component includes: first voltage conversion circuit and trigger signal generative circuit；
Wherein, the external power source interface, for accessing external power supply；
The input terminal of the first voltage conversion circuit is electrically connected with the external power source interface, the first voltage conversion circuit
Output end be electrically connected with the feeder ear of the trigger signal generative circuit, the output end of the trigger signal generative circuit and institute
The output end for stating first voltage conversion circuit is electrically connected with multiple connecting terminals one-to-one correspondence of the detection interface respectively,
The first voltage conversion circuit is used to the voltage of the external power supply of input being converted into the first DC voltage, exports
To its output end；
At least one described first manipulation switch is series at the external power source interface, the first voltage conversion circuit, described
On trigger signal generative circuit and the access of the detection interface electrical connection.
2. detection case according to claim 1, which is characterized in that first circuit unit further includes that the second manipulation is opened
It closes, third manipulates switch, voltage output interface and the first ammeter；The second circuit component further include: second voltage conversion
Circuit, first resistor and tertiary voltage conversion circuit；
The input terminal of the second voltage conversion circuit is electrically connected through the second manipulation switch with the external power source interface, institute
The output end for stating second voltage conversion circuit is electrically connected through the first resistor with the voltage output interface；The second voltage
Conversion circuit is used to for the voltage of external power supply being converted into the second DC voltage, output to its output end；
The input terminal of the tertiary voltage conversion circuit is electrically connected through third manipulation switch with the external power source interface, institute
The output end for stating tertiary voltage conversion circuit is electrically connected with the feeder ear of first ammeter；
The tertiary voltage conversion circuit is used to for the voltage of the external power supply of input to be converted into third DC voltage, exports to it
Output end；
Two measurement terminals of first ammeter are series at the output end of the second voltage conversion circuit, first electricity
On the access of resistance and voltage output interface electrical connection.
3. detection case according to claim 2, which is characterized in that at least one first manipulation switch is opened including locking press button
The two of the parallel branch formed after pass and self-resetting button switch, the self-locking button switch and self-resetting button switch are in parallel
End is series at the access of the first voltage conversion circuit, the trigger signal generative circuit and the detection interface electrical connection
On.
4. detection case according to claim 1, which is characterized in that the output end of the first voltage conversion circuit includes just
Press output end and negative pressure output end, the feeder ear of the trigger signal generative circuit includes positive pressure feeder ear and negative pressure feeder ear,
It is electrically connected respectively with the positive pressure output end of the first voltage conversion circuit and negative pressure output end,
The first voltage conversion circuit is used to the voltage of the external power supply of input being converted into two-way polarity opposite magnitude
Identical DC voltage, output to its positive pressure output end and negative pressure output end, the trigger signal generative circuit are double for exporting
Polarity square wave trigger signal.
5. detection case according to claim 4, which is characterized in that the trigger signal generative circuit includes unipolarity square wave
Signal generator and control panel；
The feeder ear of the unipolarity square wave signal generator is electrically connected with the positive pressure feeder ear of the trigger signal generative circuit,
The output end of the unipolarity square wave signal generator is electrically connected with the input terminal of the control panel,
The positive pressure feeder ear and negative pressure feeder ear of the control panel positive pressure feeder ear with the trigger signal generative circuit respectively
It is electrically connected with negative pressure feeder ear, the output end of the control panel is electrically connected with the output end of the trigger signal generative circuit, institute
The unipolarity square-wave signal for stating the unipolarity square wave signal generator of the control panel for that will input, is converted into frequency and duty
Than bipolar square wave signal all the same.
6. detection case according to claim 1, which is characterized in that at least one described first manipulation switch is opened including air
It closes, the air switch is series at the input terminal of the first voltage conversion circuit and what the external power source interface was electrically connected leads to
On the road.
7. detection case according to claim 6, which is characterized in that at least one described first manipulation switch further includes ship type
Switch, the ship type switch are series on the access that the air switch is electrically connected with the first voltage conversion circuit；
First circuit unit further includes indicator light, and the indicator light is connected to the air switch and ship type switch electricity
On the access of connection.
8. detection case according to claim 2, which is characterized in that first circuit unit further includes voltmeter and first
Fuse, the feeder ear of the voltmeter are electrically connected with the output end of the tertiary voltage conversion circuit, first fuse
It is series between the output end of the second voltage conversion circuit and the access of first resistor electrical connection, the voltmeter
Two measurement terminals are parallel to the both ends after the first resistor and the voltage output interface tandem.
9. detection case according to claim 4, which is characterized in that first circuit unit further include the second fuse and
Third fuse, second fuse be series at the first voltage conversion circuit positive pressure output end and the trigger signal
On the access of the positive pressure feeder ear electrical connection of generative circuit, the third fuse is series at the first voltage conversion circuit
On the access of the negative pressure feeder ear of negative pressure output end and trigger signal generative circuit electrical connection.
10. -9 any detection case according to claim 1, which is characterized in that the detection case further includes case lid, the case lid
It is connect with the body pivot, first circuit unit is set on the same face of the cabinet, and the case lid is for covering
The cabinet is provided with the surface of the first circuit unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821947879.0U CN209167491U (en) | 2018-11-23 | 2018-11-23 | A kind of detection case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821947879.0U CN209167491U (en) | 2018-11-23 | 2018-11-23 | A kind of detection case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209167491U true CN209167491U (en) | 2019-07-26 |
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ID=67340030
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821947879.0U Active CN209167491U (en) | 2018-11-23 | 2018-11-23 | A kind of detection case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209167491U (en) |
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2018
- 2018-11-23 CN CN201821947879.0U patent/CN209167491U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201225 Address after: 201101 Room 102, building 9, no.1366 Qishen Road, Minhang District, Shanghai Patentee after: SHANGHAI TN INDUSTRIAL Co.,Ltd. Patentee after: KUAIBEI NEW ENERGY TECHNOLOGY (SHANGHAI) Co.,Ltd. Address before: 201199 room 1912, No.2, Lane 58, East Xinjian Road, Minhang District, Shanghai Patentee before: SHANGHAI TN INDUSTRIAL Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A detection box Effective date of registration: 20211108 Granted publication date: 20190726 Pledgee: Bank of Jiangsu Co.,Ltd. Shanghai Zhabei sub branch Pledgor: KUAIBEI NEW ENERGY TECHNOLOGY (SHANGHAI) Co.,Ltd.|SHANGHAI TN INDUSTRIAL CO.,LTD. Registration number: Y2021310000099 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231214 Granted publication date: 20190726 Pledgee: Bank of Jiangsu Co.,Ltd. Shanghai Zhabei sub branch Pledgor: SHANGHAI TN INDUSTRIAL CO.,LTD.|KUAIBEI NEW ENERGY TECHNOLOGY (SHANGHAI) Co.,Ltd. Registration number: Y2021310000099 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |