CN110244175A - A kind of high-voltage detecting circuit and high pressure connect circuit - Google Patents
A kind of high-voltage detecting circuit and high pressure connect circuit Download PDFInfo
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- CN110244175A CN110244175A CN201910594647.4A CN201910594647A CN110244175A CN 110244175 A CN110244175 A CN 110244175A CN 201910594647 A CN201910594647 A CN 201910594647A CN 110244175 A CN110244175 A CN 110244175A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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Abstract
The invention discloses a kind of high-voltage detecting circuits and high pressure to connect circuit, high-voltage detecting circuit includes interlock detection circuit and power circuit, wherein, interlock detection circuit includes the first indicating device, the first end of the hollow circle of the first end and high-tension connector of first indicating device connects, the second end of first indicating device and the first output end of power circuit connect, and the second end ground connection of hollow circle is the first indicating device and hollow circle to be formed into a loop.High-voltage detecting circuit provided by the invention directly can judge whether high-tension connector breaks down according to the working status indication of the first indicating device, and in the network comprising multiple high-tension connectors, can directly and quickly fault point, maintenance difficulty is greatly reduced, convenient for debugging in time.
Description
Technical field
The present invention relates to high-tension apparatus component technology fields, connect electricity more particularly to a kind of high-voltage detecting circuit and high pressure
Road.
Background technique
Increasingly attention with various countries to the energy and environmental issue, electronic and mixed electrical automobile industry are developed rapidly.
The high direct voltage used in electric car and large-scale energy-storage system is up to several hectovolts, the safety that can bear far more than human body
Voltage, high-voltage safety become people's emphasis problem to be solved.To avoid Danger Electric shock risk, it is necessary to ensure that the height in high-tension circuit
It presses connector firm safely, introduces high-voltage interlocking detection circuit, the safety and reliability of enhancing high pressure connection circuit thus.
Currently, common high-voltage interlocking detection circuit structure is as shown in Figure 1.Wherein, high-tension battery packet 1 exports a pulse
Signal enters electrical appliance 2 from the low-pressure end harness of electrical appliance 2, then returns to electricity consumption by the hollow circle 4 on high-tension connector 3
Another low-pressure end harness of device 2, and each electrical appliance 2 is sequentially passed through in the same fashion, until returning to high-tension battery packet 1
Feedback end.The principle of the high-voltage interlocking detection circuit is: only when the connection of the high-tension connector of each electrical appliance is normal, high pressure connection
Hollow circle on device is connected, and high-tension battery packet detects pulse signal in feedback end at this time.If signal is not detected, illustrate
It is faulty in circuit.
Since the hollow circle of all high-tension connectors being connected, all devices all cannot be transported normally when causing to break down
Row, in the prior art, need by each high-tension connector of artificial detection whether failure, one by one debug after could continue work
Make.It can be seen that aforesaid way not only needs artificial detection, and high-tension connector plug is inconvenient, debugs time-consuming and laborious, effect
Rate is lower.
Summary of the invention
The object of the present invention is to provide a kind of high-voltage detecting circuits and high pressure to connect circuit, can judge that high-tension connector is
It is no to break down, and in the network comprising multiple high-tension connectors, it directly and quickly fault point, reduction can overhaul difficult
Degree, so that further reduced includes that the high pressure of high-tension connector connects the maintenance difficulty of circuit.
In order to solve the above technical problems, the present invention provides a kind of high-voltage detecting circuit, including interlock detection circuit and power supply
Circuit, wherein the interlock detection circuit includes the first indicating device, and the first end of first indicating device is connect with high pressure
The first end of the hollow circle of device connects, and the second end of first indicating device and the first output end of the power circuit connect
It connects, the second end ground connection of the hollow circle is first indicating device and the hollow circle to be formed into a loop.
Preferably, the interlock detection circuit further include be set to first indicating device and the power circuit it
Between, and the first resistor for partial pressure.
It preferably, further include driving circuit, the interlock detection circuit further includes that on-off signal provides circuit；
It includes the first optocoupler, second resistance and 3rd resistor that the on-off signal, which provides circuit,；
The anode of the luminescent device of first optocoupler is connected with the first end of the first resistor, the common end of the two with
First output end of the power circuit connects, the cathode of the luminescent device of first optocoupler and the first of the 3rd resistor
End connection, the second end of the 3rd resistor are connect with the first end of the hollow circle, the light-sensitive device of first optocoupler
Emitter ground connection, the collector of the light-sensitive device of first optocoupler are connect with the first end of the second resistance, and described second
The second end of resistance is connect with the second output terminal of the power circuit；
Wherein, the power circuit includes two output ends, exports first voltage and second voltage respectively；
The input terminal of the driving circuit is connect with the collector of the light-sensitive device of first optocoupler, the driving circuit
Output end be set between the high pressure end of incoming cables and electrical appliance of the hollow circle for providing driving signal to connect or break
Open the connection of the two.
Preferably, the driving circuit includes relay and control circuit, and the contact of the relay is arranged in the height
It is pressed between line end and the electrical appliance, the control circuit is used for the collector of the light-sensitive device according to first optocoupler
Output signal controls the on-off of the contact of the relay.
Preferably, the control circuit include the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the second optocoupler,
Second indicating device, anti-reverse diode, Schottky diode and triode；
The anode of the luminescent device of second optocoupler is connect with the first end of the 5th resistance, the 5th resistance
Second end is connect with the output end of the second voltage, cathode and the second resistance of the luminescent device of second optocoupler
First end connection, the first end and the first voltage of the collector of the light-sensitive device of second optocoupler and the 4th resistance
Output end connection, the emitter of the light-sensitive device of second optocoupler connect with the first end of the 6th resistance, described the
The second end of six resistance is connect with the first end of the base stage of the triode and the 7th resistance, the emitter of the triode
It is grounded with the second end of the 7th resistance, the second end of the 4th resistance and the first end of second indicating device connect
It connects, the second end of second indicating device is connect with the anode of the anti-reverse diode, the yin of the Schottky diode
Pole is connect with the output end of the first end of the coil of the relay and the first voltage, the yin of the anti-reverse diode
Pole, the anode of the Schottky diode, the triode collector connect with the second end of the coil of the relay, institute
The first stationary contact for stating relay is connect with the high pressure end of incoming cables of the hollow circle, the second stationary contact of the relay with it is described
Electrical appliance connection.
Preferably, first indicating device includes indicator light or buzzer.
Preferably, first indicating device is two, and two first indicating devices are in parallel.
Preferably, first optocoupler and second optocoupler are specially the photoelectrical coupler of LTV-817S.
Preferably, the power circuit further includes first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th electricity
Appearance, inductance and electric pressure converter；
The first end of the first end of the third capacitor, the first end of the first capacitor and the inductance and described first
The output end of voltage connects, second end, the second end of the first capacitor and the electric pressure converter of the third capacitor
First ground terminal ground connection, the second end of the inductance are connect with the input terminal of the electric pressure converter, the electric pressure converter
The first end of output end, the first end of second capacitor and the 4th capacitor is connect with the output end of the second voltage,
Second ground terminal of the second end of second capacitor, the second end of the 4th capacitor and the electric pressure converter is grounded, institute
The 5th capacitor is stated to be set between first ground terminal and second ground terminal.
In order to solve the above technical problems, the present invention provides a kind of high pressure connection circuit, including the connection of high-tension battery packet, high pressure
Device, series connection electrical appliance, further include high-voltage detecting circuit provided by the invention.
High-voltage detecting circuit provided by the present invention, design have the first indicating device, are used to indicate and examine to high-tension connector
The result of survey.When the circuit is applied in multiple high-tension connector networks, the first end of the first indicating device is connect with high pressure
The first end of the hollow circle of device connects, and the second end of the first indicating device and the first output end of power circuit connect, and described time
The second end of type circle is grounded, so that the first indicating device and hollow circle are formed into a loop.When high-tension connector is not connected or failure,
When power supply works normally, the circuit that the first indicating device and hollow circle are formed is in off state, and the first indicating device is not at this time
Work；When high-tension connector connection is normal and power supply works normally, the circuit that the first indicating device and hollow circle are formed is connected,
The first indicating device can work normally at this time.It follows that high-voltage detecting circuit provided by the invention can directly refer to according to first
Show that the working status indication of device judges whether high-tension connector breaks down, and in the network comprising multiple high-tension connectors
In, can directly and quickly fault point, maintenance difficulty is greatly reduced, convenient for debugging in time.
High pressure connection circuit provided by the present invention includes high-voltage detecting circuit, therefore, is equally had above-mentioned beneficial to effect
Fruit.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is existing high-voltage detecting circuit structure chart；
Fig. 2 is high-voltage detecting circuit structure chart provided by the invention；
Fig. 3 is power circuit provided by the invention, high-voltage detecting circuit and driving circuit structure figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are without making creative work, obtained every other
Embodiment belongs to the scope of the present invention.
The object of the present invention is to provide a kind of high-voltage detecting circuits and high pressure to connect circuit, can judge that high-tension connector is
It is no to break down, and in multiple high-tension connector networks, directly and quickly fault point, reduction difficulty can be overhauled, from
And further reduced includes that the high pressure of high-tension connector connects the maintenance difficulty of circuit.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 2 is high-voltage detecting circuit structure chart provided in an embodiment of the present invention, as shown in Fig. 2, in high pressure connection circuit,
High-tension battery packet 1 is used to provide power supply for electrical appliance 2, and high-tension connector 3 is connect with electrical appliance 2.To ensure Electrical Safety, high pressure
Each high-tension connector 3 in connection circuit is connect with high-voltage detecting circuit, for detecting high-tension connector with the presence or absence of event
Barrier, and can position in time high pressure connection circuit in there are the high-tension connectors 3 of failure.Fig. 3 be power circuit provided by the invention,
High-voltage detecting circuit and driving circuit structure figure, as shown in figure 3, high-voltage detecting circuit includes interlock detection circuit 20 and power supply electricity
Road 10；Wherein, interlock detection circuit 20 includes that the first end of the first indicating device LED1, the first indicating device LED1 and high pressure connect
The first end 100 for connecing the hollow circle of device 3 connects, the second end of the first indicating device LED1 and the first output end of power circuit 10
Connection, the second end ground connection of hollow circle is the first indicating device LED1 and hollow circle to be formed into a loop.
Specifically, high-voltage detecting circuit is for detecting whether high-tension connector 3 can work normally, when detecting that high pressure connects
When device 3 is normal, connecting electrical appliance 2 makes its work；When detecting 3 failure of high-tension connector, then use is connected after needing debugging
Electric appliance 2.Judge whether high-tension connector 3 can work normally, it can be by judging the first end 100 of hollow circle in high-tension connector 3
Whether normal ON is realized between the second end 200 of hollow circle.
High-voltage detecting circuit includes interlock detection circuit 20 and power circuit 10, and interlock detection circuit 20 is for detecting high pressure
It can be worked normally between the first end 100 of hollow circle and the second end 200 of hollow circle in connector 3；Power circuit 10 is mutual
It locks detection circuit 20 and working power is provided.Wherein, interlock detection circuit 20 includes the first indicating device LED1, for connecting to high pressure
Working condition between the both ends of the hollow circle of device 3 is connect to be indicated；The first end and high-tension connector 3 of first indicating device LED1
The first end 100 of hollow circle connect, the second end of the first indicating device LED1 connect with the first output end of power circuit 10,
The ground connection of second end 200 of hollow circle is the first indicating device LED1 and hollow circle to be formed into a loop.100 He of first end of hollow circle
When working normally between the second end 200 of hollow circle, the first indicating device LED1 can be worked normally；The first end 100 of hollow circle
When breaking down between hollow circle second end 200, the first indicating device LED1 be can not work normally.Pass through the first indicating device
The working status indication that LED1 is provided, judges whether the high-tension connector 3 in high-tension circuit can work normally.
High-voltage detecting circuit provided by the present invention, design have the first indicating device, are used to indicate and examine to high-tension connector
The result of survey.When the circuit is applied to comprising in multiple high-tension connector networks, the first indicating device and hollow circle are formed
Circuit.When high-tension connector failure, when power supply works normally, the circuit that the first indicating device and hollow circle are formed is in breaking shape
State, the first indicating device does not work at this time；When high-tension connector connection is normal and power supply works normally, the first indicating device with
The circuit that hollow circle is formed is connected, and the first indicating device can work normally at this time.It follows that high pressure detection provided by the invention
Circuit directly can judge whether high-tension connector breaks down according to the working status indication of the first indicating device, and multiple
In high-tension connector network, can directly and quickly fault point, maintenance difficulty is greatly reduced, convenient for debugging in time.
As shown in figure 3, interlock detection circuit 20 further includes being set between the first indicating device LED1 and power circuit 10,
And the first resistor R1 for partial pressure.
Specifically, the interlock detection circuit 20 in the present embodiment is using at low cost, the simple resistance of structure to power circuit
The voltage of 10 outputs is divided, and provides suitable operating voltage for the first indicating device LED1.In the present embodiment, this field skill
Resistance can be arranged in art personnel according to the actual application and rationally, to provide suitable electricity for the first indicating device
Pressure, convenient for being adjusted according to the actual situation, facilitates operation.
Further, high-voltage detecting circuit further includes driving circuit 30, and interlock detection circuit 20 further includes that on-off signal mentions
For circuit 210；It includes the first optocoupler U2, second resistance R2 and 3rd resistor R3 that on-off signal, which provides circuit 210,；First optocoupler U2
The anode of luminescent device connected with the first end of first resistor R1, the common end of the two and the first output end of power circuit 10
Connection, the cathode of the luminescent device of the first optocoupler U2 connect with the first end of 3rd resistor R3, the second end of 3rd resistor R3 and
The first end 100 of hollow circle connects, the emitter ground connection of the light-sensitive device of the first optocoupler U2, the light-sensitive device of the first optocoupler U2
Collector is connect with the first end of second resistance R2, and the second end of second resistance R2 and the second output terminal of power circuit 10 connect
It connects；
Wherein, power circuit 10 includes two output ends, exports first voltage VCC1 and second voltage VCC2 respectively；
The input terminal of driving circuit 30 is connect with the collector of the light-sensitive device of the first optocoupler U2, the output of driving circuit 30
End is set between the high pressure end of incoming cables 300 of hollow circle and electrical appliance 2 for providing driving signal to connect or disconnect the two
Connection.
Specifically, present embodiment discloses driving circuits 30 connects on-off according to what on-off signal offer circuit 210 provided
ON signal, to drive the high pressure end of incoming cables 300 of hollow circle and being switched on or switched off for electrical appliance 2.
It specifically, further include that on-off signal provides circuit 210 present embodiment discloses interlock detection circuit 20, wherein first
The luminescent device of optocoupler U2 is specially light emitting diode, and the light-sensitive device of the first optocoupler U2 is specially phototriode, the second electricity
Resistance R2 is pull-up resistor, and when the first optocoupler U2 can not be connected, phototriode collector is clamped in high level, 3rd resistor R3
For current-limiting resistance.
Working principle is as follows:
1) high-tension connector 3 work normally and power supply work normally when, hair of the first voltage through U2 in the first optocoupler of VCC1
Light terminates current-limiting resistance, and the second end 200 of first end 100 and hollow circle by hollow circle is grounded forming circuit, and at this time first
Optocoupler U2 is connected, the light emitting diode normal luminous in the first optocoupler U2, the collector of the phototriode in the first optocoupler U2
Ground connection is connected to the emitter of phototriode makes collector be in low level.
2) when 3 failure of high-tension connector but power supply work normally, the first optocoupler U2 can not be connected, the light in the first optocoupler U2
Quick transistor collector is connected to second voltage VCC2 through pull-up resistor, then the collector of phototriode is clamped at high level.
In fact, the phototriode current collection extremely on-off signal in the first optocoupler U2 provides the output end of circuit 210, with
The input terminal of driving circuit 30 is connected to driving circuit 30 and provides on-off signal.When high-tension connector 3 works normally, the first light
Phototriode current collection extremely low level in coupling U2, i.e. on-off signal provide circuit 210 and export low level signal；When high pressure connects
When connecing 3 failure of device, phototriode current collection extremely high level in the first optocoupler U2, i.e. on-off signal provide circuit output high electricity
Ordinary mail number.In the present embodiment, on-off signal provides circuit using the low level signal of output or high level signal as control
The on-off signal of on-off between the high pressure end of incoming cables of hollow circle and electrical appliance, so that driving circuit be made to efficiently control on-off, nothing
It needs whether staff normally controls on-off according to high-tension connector, improves the convenience of operation.
Further, driving circuit 30 includes relay K1 and control circuit 310, and the contact of relay K1 is arranged in hollow
Between the high pressure end of incoming cables 300 and electrical appliance 2 of circle, control circuit 310 is used for the current collection of the light-sensitive device according to the first optocoupler U2
The on-off of the contact of the output signal control relay K1 of pole.
Specifically, relay K1 includes three contacts, and being located in the middle is movable contact 11, up and down each stationary contact, tool
Body is RTB14012F relay, and coil voltage 12V, coil resistance 3600hms, it is 250VAC that relay, which switches voltage,.
Further, control circuit 310 include the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7,
Second optocoupler U3, the second indicating device LED2, anti-reverse diode D2, Schottky diode D1 and triode Q1；
The anode of the luminescent device of second optocoupler U3 is connect with the first end of the 5th resistance R5, the R5 second end of the 5th resistance
It is connect with the output end of second voltage VCC2, the cathode of the luminescent device of the second optocoupler U3 and the first end of second resistance R2 connect
It connects, the output end company of the collector of the light-sensitive device of the second optocoupler U3 and the first end of the 4th resistance R4 and first voltage VCC1
Connect, the emitter of the light-sensitive device of the second optocoupler U3 is connect with the first end of the 6th resistance R6, the second end of the 6th resistance R6 with
The base stage of triode Q1 is connected with the first end of the 7th resistance R7, the second termination of the emitter of triode Q1 and the 7th resistance R7
Ground, the second end of the 4th resistance R4 are connect with the first end of the second indicating device LED2, the second end of the second indicating device LED2
It is connect with the anode of anti-reverse diode D2, the first end A1 of the coil of the cathode and relay K1 of Schottky diode D1 and
The output end of one voltage VCC1 connects, the cathode of anti-reverse diode D2, the anode of Schottky diode D1, triode Q1 collection
Electrode is connect with the second end A2 of the coil of relay K1, the high pressure end of incoming cables of the first stationary contact 12 and hollow circle of relay K1
300 connections, the second stationary contact 14 of relay K1 are connect with electrical appliance 2.
Further, the first optocoupler U2 and the second optocoupler U3 is specially the photoelectrical coupler of LTV-817S, input and output every
Ionization voltage reaches 5000Vrms, and the response time reaches 4us.
Specifically, the 4th resistance R4 is divider resistance, and the 5th resistance R5 is pull-up resistor, and the 6th resistance R6 is limited galvanic electricity
Resistance, the 7th resistance R7 are protective resistance.Second indicating device LED2 be used to indicate high-tension connector 3 whether the company with electrical appliance 2
It connects, Schottky diode D1 is used for when the unexpected power down of relay coil, and the electric current in coil is released, circuit is protected not damage
It is bad.
In fact, the output signal that control circuit 310 is used for the collector of the light-sensitive device according to the first optocoupler U2 controls
The on-off of the contact of relay K1.When collector output high level signal, that is, high pressure connection of the phototriode of the first optocoupler U2
When 3 failure of device, it will be appreciated that provide circuit 210 for on-off signal and provide cut-off signal for control circuit；Second in control circuit 310
The collector of the phototriode of the cathode of the light emitting diode of optocoupler U3 and the first optocoupler U2 is connected to high level, the second optocoupler
The anode of the light emitting diode of U3 is connect by pull-up resistor with the second partial pressure VCC2, at this time the light-emitting diodes in the second optocoupler U3
Pipe is unable to normal luminous, and the second optocoupler U3 can not be connected, so that control circuit 310, which cannot provide electric signal to relay K1, makes it
It is connect with electrical appliance 2, while the second indicating device LED2 does not work.
When collector output low level signal, that is, high-tension connector 3 of the phototriode of the first optocoupler U2 works normally
When, it will be appreciated that providing circuit 210 for on-off signal is that control circuit 310 provides connection signal；Second optocoupler in control circuit 310
The cathode of the light emitting diode of U3 is low level, at this time the light emitting diode normal luminous in the second optocoupler U3, the second optocoupler U3
Conducting, the second indicating device LED2 work provide instruction information, and the base stage of triode Q1 is through the emitter of phototriode and light
The collector of quick triode is connect with the first partial pressure VCC1, obtains high level, triode Q1 is connected at this time, to drive relay
K1 movement connect movable contact 11 with the second stationary contact 14, and high input voltage signal HV_IN is connected with output signal HV_OUT, connects
Electrical appliance 2 is started to work.
In the present embodiment, control circuit can efficiently control relay movable contact and stationary contact according to the on-off signal received
Connection type between point realizes to control the connecting and disconnecting between the high pressure end of incoming cables of hollow circle and electrical appliance
In the case that high-tension connector works normally, the high pressure end of incoming cables of hollow circle is connect with electrical appliance, promotes the normal of electrical appliance
Work, it is ensured that the safety of high voltage electric.Relay design picks out simultaneously for dry contact, and making the high pressure of input can be exchange
Voltage can also be DC voltage, have stronger compatibility.
Further, the first indicating device LED1 includes indicator light or buzzer.Indicator light and buzzing in the present embodiment
Device is used to indicate whether high-tension connector works normally, and judges convenient for staff, and in high pressure connection circuit usually
There are multiple high-tension connectors, are indicated using indicator light or buzzer, fault point that can be intuitive and convenient, are convenient for work
Personnel's investigation, greatly reduces workload.
Further, the first indicating device LED1 is two, and two the first indicating device LED1 are in parallel.Specifically, it is
It prevents from influencing testing result since indicator light or buzzer break down, settable two the first indicating device LED1 parallel connections connect
It connects, when guaranteeing a failure in the first indicating device, another can normally be detected as a result, improving the accurate of detection
Property.It can be two indicator lights parallel connections or two buzzer parallel connections herein, or an indicator light and a buzzer are simultaneously
Connection.
Further, power circuit 10 further include first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4,
5th capacitor CY1, inductance L1 and electric pressure converter U1；
The first end of the first end of third capacitor C3, the first end of first capacitor C1 and inductance L1 is with first voltage VCC1's
Output end connection, second end, the first ground connection termination of the second end of first capacitor C1 and electric pressure converter U1 of third capacitor C3
Ground, the second end of inductance L1 are connect with the input terminal VIN of electric pressure converter U1, the output end VOUT of electric pressure converter U1, second
The first end of capacitor C2 and the first end of the 4th capacitor C4 are connect with the output end of second voltage VCC2, and the second of the second capacitor C2
The second ground terminal ground connection at end, the second end of the 4th capacitor C4 and electric pressure converter U1, the 5th capacitor CY1 are set to the first ground connection
Between end and the second ground terminal.
Specifically, first capacitor C1 and the 4th capacitor C4 is patch capacitor, wherein the 4th capacitor C4 is small bulk capacitance.The
Two capacitor C2 and third capacitor C3 are electrolytic capacitor, and the 5th capacitor CY1 is Y capacitance.Electric pressure converter U1 is DC/DC converter,
Specially R2S-1205/H, working efficiency are encapsulated up to 85% using 8-SMD module.
Specifically, third capacitor C3, first capacitor C1 and inductance L1 constitute LC filter circuit, the electricity of the second capacitor C2 and the 4th
Hold low-frequency filter circuit in C4 composition.First voltage VCC1 is connect after LC filter circuit with the input terminal of DC/DC converter,
And by low-frequency filter circuit in the connection of DC/DC converter output end, second voltage VCC2 is exported.To eliminate common mode interference, in DC/
It connects between two ground wires of DC converter Y capacitance.
The power circuit provided in the present embodiment provides working power, while benefit for interlock detection circuit and driving circuit
Filter circuit is constituted with capacitor and inductance, improves the anti-interference ability of circuit.
It is understood that if the high-voltage detecting circuit in above-described embodiment is sold or is used as independent product
When, it can apply in a high pressure connection circuit.Based on this understanding, the present invention provides a kind of high pressures to connect circuit,
It further include high-voltage detecting circuit provided by the invention including high-tension battery packet 1, high-tension connector 3, the electrical appliance 2 being connected in series.
Since high pressure provided by the present invention connection circuit includes high-voltage detecting circuit, equally there is above-mentioned beneficial effect.
A kind of high-voltage detecting circuit provided by the present invention and high pressure connection circuit are described in detail above.Explanation
Each embodiment is described in a progressive manner in book, the highlights of each of the examples are it is different from other embodiments it
Place, the same or similar parts in each embodiment may refer to each other.For the device disclosed in the embodiment, due to itself and reality
It is corresponding to apply method disclosed in example, so being described relatively simple, reference may be made to the description of the method.It should refer to
It out, for those skilled in the art, without departing from the principle of the present invention, can also be to the present invention
Some improvement and modification can also be carried out, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (10)
1. a kind of high-voltage detecting circuit, which is characterized in that including interlock detection circuit and power circuit, wherein the interlocking inspection
Slowdown monitoring circuit includes the first indicating device, and the first end of the hollow circle of the first end and high-tension connector of first indicating device connects
It connects, the second end of first indicating device is connect with the first output end of the power circuit, the second end of the hollow circle
Ground connection is first indicating device and the hollow circle to be formed into a loop.
2. high-voltage detecting circuit according to claim 1, which is characterized in that the interlock detection circuit further includes being set to
Between first indicating device and the power circuit, and the first resistor for partial pressure.
3. high-voltage detecting circuit according to claim 2, which is characterized in that it further include driving circuit, the interlocking detection
Circuit further includes that on-off signal provides circuit；
It includes the first optocoupler, second resistance and 3rd resistor that the on-off signal, which provides circuit,；
The anode of the luminescent device of first optocoupler is connected with the first end of the first resistor, the common end of the two with it is described
First output end of power circuit connects, and the cathode of the luminescent device of first optocoupler and the first end of the 3rd resistor connect
It connects, the second end of the 3rd resistor is connect with the first end of the hollow circle, the transmitting of the light-sensitive device of first optocoupler
Pole ground connection, the collector of the light-sensitive device of first optocoupler are connect with the first end of the second resistance, the second resistance
Second end connect with the second output terminal of the power circuit；
Wherein, the power circuit includes two output ends, exports first voltage and second voltage respectively；
The input terminal of the driving circuit is connect with the collector of the light-sensitive device of first optocoupler, the driving circuit it is defeated
Outlet is set between the high pressure end of incoming cables and electrical appliance of the hollow circle for providing driving signal to connect or disconnect two
The connection of person.
4. high-voltage detecting circuit according to claim 3, which is characterized in that the driving circuit includes relay and control
The contact of circuit, the relay is arranged between the high pressure end of incoming cables and the electrical appliance, and the control circuit is used for root
The on-off of the contact of the relay is controlled according to the output signal of the collector of the light-sensitive device of first optocoupler.
5. high-voltage detecting circuit according to claim 4, which is characterized in that the control circuit includes the 4th resistance, the
Five resistance, the 6th resistance, the 7th resistance, the second optocoupler, the second indicating device, anti-reverse diode, Schottky diode and three
Pole pipe；
The anode of the luminescent device of second optocoupler is connect with the first end of the 5th resistance, and the second of the 5th resistance
End is connect with the output end of the second voltage, the cathode of the luminescent device of second optocoupler and the first of the second resistance
End connection, the first end of the collector of the light-sensitive device of second optocoupler and the 4th resistance and the first voltage it is defeated
Outlet connection, the emitter of the light-sensitive device of second optocoupler are connect with the first end of the 6th resistance, the 6th electricity
The second end of resistance is connect with the first end of the base stage of the triode and the 7th resistance, the emitter of the triode and institute
The second end ground connection of the 7th resistance is stated, the second end of the 4th resistance is connect with the first end of second indicating device, institute
The second end for stating the second indicating device is connect with the anode of the anti-reverse diode, the cathode of the Schottky diode and institute
The first end for stating the coil of relay is connected with the output end of the first voltage, the cathode of the anti-reverse diode, described
The anode of Schottky diode, the triode collector connect with the second end of the coil of the relay, the relay
First stationary contact of device is connect with the high pressure end of incoming cables of the hollow circle, the second stationary contact and the electrical appliance of the relay
Connection.
6. high-voltage detecting circuit according to claim 1, which is characterized in that first indicating device include indicator light or
Buzzer.
7. high-voltage detecting circuit according to claim 6, which is characterized in that first indicating device is two, and two
A first indicating device is in parallel.
8. high-voltage detecting circuit according to claim 5, which is characterized in that first optocoupler and second optocoupler tool
Body is the photoelectrical coupler of LTV-817S.
9. high-voltage detecting circuit according to claim 1, which is characterized in that the power circuit further include first capacitor,
Second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, inductance and electric pressure converter；
The first end and the first voltage of the first end of the third capacitor, the first end of the first capacitor and the inductance
Output end connection, the first of the second end of the third capacitor, the second end of the first capacitor and the electric pressure converter
Ground terminal ground connection, the second end of the inductance are connect with the input terminal of the electric pressure converter, the output of the electric pressure converter
The first end at end, the first end of second capacitor and the 4th capacitor is connect with the output end of the second voltage, described
Second ground terminal of the second end of the second capacitor, the second end of the 4th capacitor and the electric pressure converter is grounded, and described the
Five capacitors are set between first ground terminal and second ground terminal.
10. a kind of high pressure connects circuit, including high-tension battery packet, high-tension connector, series connection electrical appliance, feature exists
In further including high-voltage detecting circuit described in any one of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910594647.4A CN110244175A (en) | 2019-07-03 | 2019-07-03 | A kind of high-voltage detecting circuit and high pressure connect circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910594647.4A CN110244175A (en) | 2019-07-03 | 2019-07-03 | A kind of high-voltage detecting circuit and high pressure connect circuit |
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| CN110244175A true CN110244175A (en) | 2019-09-17 |
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| CN201910594647.4A Pending CN110244175A (en) | 2019-07-03 | 2019-07-03 | A kind of high-voltage detecting circuit and high pressure connect circuit |
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Application publication date: 20190917 |