CN108387809A - High-voltage interlocking detection circuit and high-voltage interlocking detection method - Google Patents
High-voltage interlocking detection circuit and high-voltage interlocking detection method Download PDFInfo
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- CN108387809A CN108387809A CN201810160133.3A CN201810160133A CN108387809A CN 108387809 A CN108387809 A CN 108387809A CN 201810160133 A CN201810160133 A CN 201810160133A CN 108387809 A CN108387809 A CN 108387809A
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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
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Abstract
The present invention provides a kind of high-voltage interlocking detection circuit and high-voltage interlocking detection method, wherein circuit includes：Constant flow regulation component and electrical signal detection component；The constant flow regulation component is connected to form measure loop with high-tension connector, and constant flow regulation component is used to control the constant current hold in the measure loop；The signal input part of the electrical signal detection component is connected in the measure loop, the voltage for detecting the measure loop, and the impedance magnitude of high-tension connector is determined according to voltage swing, and the impedance magnitude is used to indicate the working condition of high-tension connector.High-voltage interlocking detection circuit and high-voltage interlocking detection method provided by the invention can improve accuracy in detection.
Description
Technical field
The present invention relates to high-tension connector detection device technology more particularly to a kind of high-voltage interlocking detection circuit and high pressure are mutual
Lock detection method.
Background technology
Currently, all paid much attention to the problem of energy shortage and environmental pollution in view of the whole world, for the energy saving of automobile and
The requirement of environmental protection is also higher and higher, and power-driven system is applied in more and more automobiles, passes through the dynamic of vehicle drive power
Power transmission system works, and can reduce exhaust gas discharge, meets environmentally friendly needs.
Power battery is provided in electric vehicle, for powering for power-driven system.Due to the work electricity of power battery
Pressure is higher, usually 400V-600V, and is connected by high-tension connector between each electronic unit in power-driven system,
There are one of maximum devices of security risk as in power-driven system for high-tension connector, once there is event in high-tension connector
Barrier, can influence the safety of entire power-driven system.High-voltage interlocking need to be arranged in international standard regulation in power-driven system
Device, for being detected to high-tension connector.
Existing high-voltage interlocking device includes：Pulse width signal generator and comparator, wherein the one of pulse width signal generator
A low-voltage terminal is connected with the input terminal of high-tension connector.One of comparison circuit input terminal is connected with the low-voltage terminal,
Another input terminal is connected with the output end of high-tension connector, the pulse width signal for judging high-tension connector input and output
Whether signal is consistent, if unanimously, showing that high-tension connector is normal；If inconsistent, show that open circuit fault occurs in high-tension connector.
Invention content
A kind of high-voltage interlocking detection circuit of present invention offer and high-voltage interlocking detection method, for improving accuracy in detection.
First aspect present invention provides a kind of high-voltage interlocking detection circuit, including：Constant flow regulation component and electrical signal detection
Component；
The constant flow regulation component is connected to form measure loop with high-tension connector, and constant flow regulation component is for controlling institute
State the constant current hold in measure loop；
The signal input part of the electrical signal detection component is connected in the measure loop, for detecting described detect back
The voltage on road, and determine according to voltage swing the impedance magnitude of high-tension connector, the impedance magnitude is used to indicate high pressure connection
The working condition of device.
High-voltage interlocking detection circuit as described above, the constant flow regulation component include：For electric installation, voltage-reference and
Current regulating device；
The current regulating device connects to form the measure loop with high-tension connector for electric installation；
The voltage-reference has the first signal connection end, in first signal connection end and the high-tension connector
The first connecting pin be connected；The voltage-reference is used to control the voltages keep constant of first connecting pin, so that described
Electrical signal detection component detection to voltage change, the variation of the impedance value with the variation of high-tension connector middle impedance value
It is used to indicate the working condition of high-tension connector.
High-voltage interlocking detection circuit as described above, described for electric installation is DC power supply.
High-voltage interlocking detection circuit as described above, the electrical signal detection component are microprocessor.
High-voltage interlocking detection circuit as described above, the current regulating device include：Triode；
The base stage of the triode is connected to the anode for electric installation after being concatenated with first resistor；The current collection of the triode
Pole is connected to the anode for electric installation；The emitter of the triode is connected with the second connection end of high-tension connector.
High-voltage interlocking detection circuit as described above, the voltage-reference also have ground terminal, the ground terminal connection
To the cathode for electric installation.
High-voltage interlocking detection circuit as described above, the voltage-reference also have a second signal connecting pin, and described the
Binary signal connecting pin is connected to the base stage of the triode.
High-voltage interlocking detection circuit as described above, the first connecting pin of the high-tension connector is also connected with second resistance
Afterwards, it is connected to the cathode for electric installation.
Second aspect of the present invention provides a kind of high-voltage interlocking detection method applied to foregoing circuit, including：
The voltage of measure loop is obtained, and whether within a preset range to judge the voltage magnitude of measure loop；
If the voltage magnitude of measure loop is within a preset range, the inspection that high-tension connector is in normal operating conditions is generated
Survey result；
If the voltage magnitude of measure loop within a preset range, does not generate high-tension connector and is in abnormal operation
Testing result.
High-voltage interlocking detection method as described above generates the testing result that high-tension connector is in abnormal operation,
Including：
Judge the voltage magnitude of measure loop and whether be less than given threshold for the difference between the voltage magnitude of electric installation,
If so, generating the testing result that high-tension connector is in open circuit；If it is not, then generating the inspection that high-tension connector is in malfunction
Survey result.
Technical solution provided by the invention is connected to form by using constant flow regulation component and high-tension connector and detects back
Road, constant flow regulation component are used to control the constant current hold of measure loop, also use electrical signal detection component to measure loop
Voltage be detected, the impedance magnitude of high-tension connector can be determined according to the voltage magnitude of measure loop, and then judge
Whether high-tension connector is in normal working condition.Pulse-width signal is detected and is compared in compared with the prior art
Mode for, the present embodiment is detected the DC signal in measure loop, due in measure loop current value protect
It holds constant, and is not easy to be influenced by external interference signal and have greatly changed, therefore, the voltage in measure loop is carried out
The accuracy of measurement is higher.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the structural schematic diagram for the high-voltage interlocking detection circuit that the embodiment of the present invention one provides；
Fig. 2 is the structural schematic diagram of high-voltage interlocking detection circuit provided by Embodiment 2 of the present invention；
Fig. 3 is the flow chart for the high-voltage interlocking detection method that the embodiment of the present invention three provides.
Reference numeral：
1- constant flow regulation components；11- is for electric installation；
12- voltage-references；The first signal connection ends of 121-；
122- second signals connecting pin；123- ground terminals；
13- current regulating devices；131- base stages；
132- collectors；133- emitters；
2- electrical signal detection components；21- signal input parts；
3- high-tension connectors；31- resistance；
The first connecting pins 311-；312- second connection ends；
4- measure loops；51- first resistors；
52- second resistances.
Through the above attached drawings, it has been shown that the specific embodiment of the present invention will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of the inventive concept in any manner with verbal description, but is by referring to specific embodiments
Those skilled in the art illustrate idea of the invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
It is used in the prior art for including to the high-voltage interlocking device that high-tension connector is detected：Pulse width signal
Generator and comparator, one of pulse width signal generator low-voltage terminal are connected with the input terminal of high-tension connector.Compare
One of circuit input terminal is connected with the low-voltage terminal, another input terminal is connected with the output end of high-tension connector, uses
It is whether consistent in the signal of the pulse width signal and output that judge high-tension connector input, if unanimously, showing that high-tension connector is normal；
If inconsistent, show that open circuit fault occurs in high-tension connector.
Since the anti-interference ability of pulse width signal is poor, it is easier to be caused to test by external interference during the test
As a result accuracy is not high.And high-tension connector is only able to detect using above-mentioned apparatus and is in normal work and breaking two kinds of feelings
Condition, the case where can not detecting in poor contact or virtual connection.
In view of the above-mentioned problems, the present embodiment provides a kind of high-voltage interlocking detection circuit, can be used in the high pressure in automobile
Connector is detected, and anti-interference ability is stronger, and then can improve the accuracy of testing result.Certainly, the present embodiment provides
High-voltage interlocking detection circuit can also apply in other fields be detected high-tension connector part, the present embodiment is simultaneously unlimited
It is fixed.
Fig. 1 is the structural schematic diagram for the high-voltage interlocking detection circuit that the embodiment of the present invention one provides.As shown in Figure 1, this reality
It applies example and a kind of high-voltage interlocking detection circuit is provided, including：Constant flow regulation component 1 and electrical signal detection component 2.
Wherein, constant flow regulation component 1 is connected to form measure loop 4 with high-tension connector 3, and constant flow regulation component 1 is used for
Control the constant current hold in measure loop 4.The signal input part of electrical signal detection component 2 is connected in measure loop 4, is used
In the voltage of detection measure loop 4, and determine according to voltage swing the impedance magnitude of high-tension connector 3, impedance magnitude is for referring to
Show the working condition of high-tension connector 3.
By taking electric vehicle as an example, high-tension connector 3 is in power-driven system for connecting each high voltage component.In vehicle
In driving process, the vibration that vehicle body generates can promote each connection terminal in high-tension connector to loosen, and then influence high pressure and connect
Connect the connection status of device.When high-tension connector is in the state of normal connection, open circuit, poor contact, internal impedance value
It is different.When high-tension connector is in normal connection status, resistance value can normal fluctuation within a preset range.If high pressure
Connector 3 occurs opening a way or the failures such as poor contact, then its impedance value changes greatly, and can exceed preset range.High pressure is connected
The impedance for connecing the formation in device 3 indicates that the impedance value of high-tension connector 3 is resistance 31 by a virtual resistance 31
Resistance value.
In the present embodiment, the tool of high-tension connector 3 is there are two connecting pin, two of constant flow regulation component 1 and high-tension connector 3
Connecting pin is connected and forms measure loop 4, is equivalent to constant flow regulation component 1 and is connected to form measure loop 4 with high-tension connector 3.
Constant flow regulation component 1 is used to adjust the constant current hold in measure loop 4, then when the impedance value of high-tension connector 3 becomes
When change, the voltage of measure loop 4 can also change.Using electrical signal detection component 2 to the DC voltage in measure loop 4 into
Row acquisition, and judge it whether within a preset range, you can judge whether high-tension connector is in normal working condition.
Technical solution provided in this embodiment is connected to form by using constant flow regulation component and high-tension connector and detects back
Road, constant flow regulation component are used to control the constant current hold of measure loop, also use electrical signal detection component to measure loop
Voltage be detected, the impedance magnitude of high-tension connector can be determined according to the voltage magnitude of measure loop, and then judge
Whether high-tension connector is in normal working condition.Pulse-width signal is detected and is compared in compared with the prior art
Mode for, the present embodiment is detected the DC signal in measure loop, due in measure loop current value protect
It holds constant, and is not easy to be influenced by external interference signal and have greatly changed, therefore, the voltage in measure loop is carried out
The accuracy of measurement is higher.
Embodiment two
The present embodiment is on the basis of the above embodiments, to be optimized to high-voltage interlocking detection circuit.
The function of above-mentioned constant flow regulation component is to control the constant current hold of measure loop, and various ways may be used
It realizes, such as constant-current source commonly used in the prior art, constant-current circuit component etc..
The present embodiment provides a kind of specific implementations of constant flow regulation component, and those skilled in the art can also be in the party
It is changed circuit element on the basis of formula, increases circuit element, reduces circuit element, changes the modifications such as connection line.
Fig. 2 is the structural schematic diagram of high-voltage interlocking detection circuit provided by Embodiment 2 of the present invention.As shown in Fig. 2, this reality
Applying the constant flow regulation component that example provides includes：For electric installation 11, voltage-reference 12 and current regulating device 13.
Wherein, current regulating device 13, for electric installation 11 connect to form measure loop 4, current regulation with high-tension connector 3
Device 13 is used to control the constant current hold of measure loop 4, powers for measure loop 4 for electric installation 11.Voltage-reference 12
One of signal connection end be connected with high-tension connector 3, voltage-reference 12 is used to control the voltage of the signal connection end
It keeps constant, so that the voltage that electrical signal detection component 2 detects changes with the variation of the impedance value of high-tension connector 3.
The impedance value is used to indicate the working condition of high-tension connector 3.
Device commonly used in the art can be used in voltage-reference 12, and signal output end can export the electricity of constant amplitude
Pressure.Voltage-reference 12 used by the present embodiment has the first signal connection end 121, second signal connecting pin 122 and ground wire
End 123.Wherein, the first signal connection end 121 is connected with high-tension connector 3.
Two connecting pins in high-tension connector 3 are respectively：First connecting pin 311 and second connection end 312.Wherein,
One connecting pin 311 is connected with above-mentioned first signal connection end 121.The first connecting pin can be controlled by being equivalent to voltage-reference 12
311 voltage magnitude is kept constant.
Further, the signal input part of electrical signal detection component 2 is connected with the second connection end 312 of high-tension connector 3.
Since the electric current in measure loop 4 is constant, the voltage magnitude of the first connecting pin 311 of high-tension connector 3 is kept constant, because
This, when the impedance value of high-tension connector 3 changes, the voltage magnitude of second connection end 312 can be with changing.Example
Such as：When the impedance value of high-tension connector 3 increases, the voltage magnitude of second connection end 312 can also increase therewith.Therefore, pass through
Voltage magnitude detection to second connection end 312, and the change in impedance value it can be learnt that high-tension connector 3 is analyzed, in turn
It can obtain the working condition of high-tension connector 3.
The function of above electrical signal detection components 2 be the voltage magnitude of second connection end 312 is detected, and to detection
To voltage magnitude analyzed and judged.A variety of realization methods may be used in electrical signal detection component 2, such as：It can be used existing
There are common controller, processor or microprocessor etc. in technology, the present embodiment is using microprocessor as electrical signal detection group
Part 2, there are one signal input part 21, the signal input parts 21 to be connected with the second connection end 312 in high-tension connector 3 for tool.
Those skilled in the art can write corresponding program according to the model and corresponding programming software of used microprocessor, load
Enter in microprocessor, to allow the microprocessor to realize that above-mentioned function, concrete implementation mode the present embodiment do not limit.
It is above-mentioned that DC power supply specifically can be used for electric installation 11.The function of above-mentioned current regulating device 13 is that control detects back
Device commonly used in the art may be used in the constant current hold on road 4.In the present embodiment, current regulating device 13 can be three
Pole pipe, with base stage 131, collector 132 and emitter 133.Wherein, base stage 131 is connected to after connecting with first resistor 51
For the anode of electric installation 11, collector 132 is connected to the anode for electric installation 11, emitter 133 and the second of high-tension connector
Connecting pin is connected.
Ground terminal 123 in voltage-reference 12 is connected to the cathode for electric installation 11.Second in voltage-reference 12
Signal connection end 122 is connected to the base stage 131 of triode.
In addition, after the second connection end 312 of high-tension connector 3 is also connected with second resistance 52, it is connected to for electric installation 11
Cathode.
Above-mentioned voltage-reference 12, high-tension connector 3, triode, first resistor 51 and for electric installation 11 formed work return
Road, after which forms, the voltage magnitude of first connecting pin 311 is kept constant in high-tension connector 3.
Use the principle that above-mentioned detection circuit is detected high-tension connector 3 for：
If the impedance value of high-tension connector 3 fluctuates within a preset range, the voltage amplitude that electrical signal detection component 2 detects
Value also fluctuates within a preset range therewith.
If high-tension connector 3 is open circuit, i.e.,：The impedance value of high-tension connector 3 is infinity, then electrical signal detection component 2
The voltage magnitude detected is the partial pressure that first resistor 51 is subtracted for the voltage magnitude that electric installation 11 exports.Therefore, it was detecting
Cheng Zhong, between judging voltage magnitude that the voltage magnitude and electrical signal detection component 2 that are exported for electric installation 11 detect
Difference is less than given threshold, then high-tension connector 3 is in open-circuit condition.In addition, since the partial pressure of first resistor 51 is smaller, this point
Pressure is given threshold.Accordingly it is also possible to which it is close for electric installation to be interpreted as the voltage magnitude detected when electrical signal detection component 2
Voltage magnitude when, high-tension connector 3 is in open-circuit condition.
If 3 poor contact of high-tension connector, the impedance value fluctuation range of high-tension connector 3 is not within a preset range, then electric
The voltage magnitude that signal detection component 2 detects fluctuates therewith, and fluctuation range is also not within a preset range.
Based on this, the voltage of measure loop 4 is detected by using electrical signal detection component 2, and judge its voltage
Within a preset range whether amplitude, you can learns the situation of change of the impedance value of high-tension connector 3, and then learns high-tension connector
3 working condition.
Technical solution provided in this embodiment is connected to form by using constant flow regulation component and high-tension connector and detects back
Road, constant flow regulation component are used to control the constant current hold of measure loop, also use electrical signal detection component to measure loop
Voltage be detected, the impedance magnitude of high-tension connector can be determined according to the voltage magnitude of measure loop, and then judge
Whether high-tension connector is in normal working condition.Pulse-width signal is detected and is compared in compared with the prior art
Mode for, the present embodiment is detected the DC signal in measure loop, due in measure loop current value protect
It holds constant, and is not easy to be influenced by external interference signal and have greatly changed, therefore, the voltage in measure loop is carried out
The accuracy of measurement is higher.
Moreover, the technical solution provided using the present embodiment, is not only able to detect that high-tension connector 3 is in normal work
Make state, open-circuit working state, moreover it is possible to detect whether high-tension connector 3 is in the state of poor contact, having widened can examine
The fault type measured, personnel easy to operation know the working condition of high-tension connector 3 in time, and then execute and targetedly tie up
Shield operation, improves the efficiency of fault identification.
Embodiment three
The present embodiment provides a kind of high-voltage interlocking detection methods, can be applied to the high pressure that any of the above-described embodiment is provided
Interlock detection circuit.
As shown in Figure 1, high-voltage interlocking detection circuit includes：Constant flow regulation component 1 and electrical signal detection component 2.Wherein, permanent
Stream adjusting part 1 is connected to form measure loop 4 with high-tension connector 3, and constant flow regulation component 1 is for controlling in measure loop 4
Constant current hold.The signal input part of electrical signal detection component 2 is connected in measure loop 4, for detecting measure loop 4
Voltage, and judge according to the voltage magnitude of measure loop 4 working condition of high-tension connector 3.
This method can be executed by the electrical signal detection component in above-mentioned detection circuit, and software and/or hard may be used
The mode of part is realized.
Fig. 3 is the flow chart for the high-voltage interlocking detection method that the embodiment of the present invention three provides.As indicated at 3, the present embodiment carries
The high-voltage interlocking detection method of confession includes：
Step 301, the voltage for obtaining measure loop, and whether within a preset range to judge the voltage magnitude of measure loop.
Whether electrical signal detection component 2 obtains the voltage of measure loop 4, then judge the amplitude of voltage in preset range
It is interior.The preset range is to be stored in advance in memory space, and electrical signal detection component 2 is read out of memory space.
If the voltage magnitude of step 302, measure loop is within a preset range, generates high-tension connector and be in normal work
The testing result of state.
When judging the voltage magnitude of measure loop 4 within a preset range, then the detection knot that electrical signal detection component 2 generates
Fruit is：High-tension connector 3 is in normal operating conditions.The testing result can be sent to phase therewith by electrical signal detection component 2
It is shown on display even.
If the voltage magnitude of step 303, measure loop within a preset range, does not generate high-tension connector and is in abnormal work
Make the testing result of state.
When judging the voltage magnitude of measure loop 4 not within a preset range, then the detection that electrical signal detection component 2 generates
As a result it is：High-tension connector 3 is in abnormal operation.The testing result can be sent to therewith by electrical signal detection component 2
It is shown on connected display.
Further, it when judging the voltage magnitude of measure loop 4 not within a preset range, can also continue to judge inspection
The voltage magnitude on survey time road 4 and whether it is less than given threshold for the difference between the voltage magnitude of electric installation 11, if so, generating
High-tension connector 3 is in the testing result of open circuit；If it is not, then generating the testing result that high-tension connector 3 is in malfunction.On
It states testing result and can be sent on the display being attached thereto by electrical signal detection component 2 and shown.
Technical solution provided in this embodiment is connected to form by using constant flow regulation component and high-tension connector and detects back
Road, constant flow regulation component are used to control the constant current hold of measure loop, also use electrical signal detection component to measure loop
Voltage be detected, the impedance magnitude of high-tension connector can be determined according to the voltage magnitude of measure loop, and then judge
Whether high-tension connector is in normal working condition.Pulse-width signal is detected and is compared in compared with the prior art
Mode for, the present embodiment is detected the DC signal in measure loop, due in measure loop current value protect
It holds constant, and is not easy to be influenced by external interference signal and have greatly changed, therefore, the voltage in measure loop is carried out
The accuracy of measurement is higher.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implies relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more this feature.In the description of the present invention,
The meaning of " plurality " is at least two, such as two, three etc., unless otherwise specifically defined.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer read/write memory medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned includes：ROM, RAM, magnetic disc or
The various media that can store program code such as person's CD.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of high-voltage interlocking detection circuit, which is characterized in that including：Constant flow regulation component and electrical signal detection component；
The constant flow regulation component is connected to form measure loop with high-tension connector, and constant flow regulation component is for controlling the inspection
Constant current hold in survey time road；
The signal input part of the electrical signal detection component is connected in the measure loop, for detecting the measure loop
Voltage, and determine according to voltage swing the impedance magnitude of high-tension connector, the impedance magnitude is used to indicate high-tension connector
Working condition.
2. high-voltage interlocking detection circuit according to claim 1, which is characterized in that the constant flow regulation component includes：For
Electric installation, voltage-reference and current regulating device；
The current regulating device connects to form the measure loop with high-tension connector for electric installation；
The voltage-reference has the first signal connection end, and the in first signal connection end and the high-tension connector
One connecting pin is connected；The voltage-reference is used to control the voltages keep constant of first connecting pin, so that the telecommunications
The voltage that number detection components detect changes with the variation of high-tension connector middle impedance value, and the variation of the impedance value is used for
Indicate the working condition of high-tension connector.
3. high-voltage interlocking detection circuit according to claim 2, which is characterized in that it is described for electric installation be DC power supply.
4. high-voltage interlocking detection circuit according to claim 3, which is characterized in that the electrical signal detection component is micro- place
Manage device.
5. high-voltage interlocking detection circuit according to claim 4, which is characterized in that the current regulating device includes：Three
Pole pipe；
The base stage of the triode is connected to the anode for electric installation after being concatenated with first resistor；The collector of the triode connects
It is connected to the anode for electric installation；The emitter of the triode is connected with the second connection end of high-tension connector.
6. high-voltage interlocking detection circuit according to claim 5, which is characterized in that the voltage-reference also has ground wire
End, the ground terminal are connected to the cathode for electric installation.
7. high-voltage interlocking detection circuit according to claim 6, which is characterized in that the voltage-reference also has second
Signal connection end, the second signal connecting pin are connected to the base stage of the triode.
8. high-voltage interlocking detection circuit according to claim 7, which is characterized in that the first connection of the high-tension connector
After end is also connected with second resistance, it is connected to the cathode for electric installation.
9. a kind of high-voltage interlocking detection method applied to any one of the claim 1-8 circuits, which is characterized in that including：
The voltage of measure loop is obtained, and whether within a preset range to judge the voltage magnitude of measure loop；
If the voltage magnitude of measure loop is within a preset range, the detection knot that high-tension connector is in normal operating conditions is generated
Fruit；
If the voltage magnitude of measure loop within a preset range, does not generate the detection that high-tension connector is in abnormal operation
As a result.
10. high-voltage interlocking detection method according to claim 9, which is characterized in that generate high-tension connector and be in abnormal
The testing result of working condition, including：
Judge the voltage magnitude of measure loop and whether is less than given threshold for the difference between the voltage magnitude of electric installation, if
It is the testing result for then generating high-tension connector and being in open circuit；If it is not, then generating the detection that high-tension connector is in malfunction
As a result.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109782160A (en) * | 2019-02-25 | 2019-05-21 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking circuit and detection method thereof |
| CN110261712A (en) * | 2018-09-21 | 2019-09-20 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking system and detection method thereof |
| CN110967617A (en) * | 2019-02-25 | 2020-04-07 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking circuit and detection method thereof |
| CN112394243A (en) * | 2019-08-19 | 2021-02-23 | 广东美的白色家电技术创新中心有限公司 | Detection module and electrical equipment |
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| CN113391238A (en) * | 2021-05-27 | 2021-09-14 | 浙江伊控动力***有限公司 | Novel high-voltage interlocking connection state detection circuit |
| CN115236496A (en) * | 2022-09-22 | 2022-10-25 | 深圳市华宝新能源股份有限公司 | Interlocking connection detection circuit |
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