CN110221154A - High-voltage interlocking device broken circuit detecting system and broken circuit detecting method - Google Patents
High-voltage interlocking device broken circuit detecting system and broken circuit detecting method Download PDFInfo
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- CN110221154A CN110221154A CN201810173677.3A CN201810173677A CN110221154A CN 110221154 A CN110221154 A CN 110221154A CN 201810173677 A CN201810173677 A CN 201810173677A CN 110221154 A CN110221154 A CN 110221154A
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- 238000005070 sampling Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 21
- 230000007423 decrease Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 12
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
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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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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of high-voltage interlocking device broken circuit detecting systems, it include: that each male end connector is parallel with first quasi-resistance, when male end connector and female end connector grafting, the first quasi-resistance forms first kind resistance string in series each other, and the first quasi-resistance is fixed resistance value resistance；Each female end connector is parallel with second quasi-resistance, and when male end connector and female end connector grafting, the second quasi-resistance forms the second quasi-resistance string in series each other, and the second quasi-resistance resistance value is different；The first end of first kind resistance string or its second end series connection sampling precision resistance；The invention also discloses the methods for carrying out breaking detection using above-mentioned high-voltage interlocking device broken circuit detecting system.The present invention realizes detection using resistor matrix, and anti-electromagnetic interference capability with higher can accurately judge the connector number (position) for patching failure, and manufacturing cost is lower compared with the prior art by the present invention.
Description
Technical field
The present invention relates to automotive fields, more particularly to a kind of open circuit of high-voltage interlocking device used when transmitting electric power
Detection system.The open circuit of high-voltage interlocking device is carried out using above-mentioned high-voltage interlocking device broken circuit detecting system the invention further relates to a kind of
The method of detection.
Background technique
High-voltage interlocking device is that connector inserts tight, to cause connection breaking safety in order to prevent in power transmission
Protective device.High-voltage interlocking device is usually by multiple male end plug connectors (row) being arranged in juxtaposition and multiple female end plug connectors (row) group
At.
In order to realize that secure connection, high-voltage interlocking device are typically provided with broken circuit detecting system.When the public affairs of high-voltage interlocking device
After holding plug connector and the grafting of female end plug connector good, the conducting wire of test side can be connected to CMC (battery modules controller) end, high at present
It presses there are two types of interlock system detection schemes:
1.PWM square wave detection method
BMC (battery pack central controller) sends the pulse of certain duty ratio by a conducting wire to connector, if should
Connector conducting sends same duty cycle pulse by another conducting wire then by detecting the duty ratio of the square wave；If should
Joint failure, then duty ratio can not be detected, then CMC send duty ratio specified in advance, the duty ratio and other CMC and
BMC is different, can quickly position breaking connector based on this method；
This method requires CMC to carry out the pulse that certain cooperation emits corresponding duty ratio, and due in inside battery, electromagnetism
Environment is poor, and in terms of needing to consider the problems of electromagnetic interference with this method, and duty ratio differs more in the case where CMC is more
It is more difficult to identify less；The program is only able to detect connector of the last one disconnection simultaneously, can not identify again before this plug-in unit whether
There are also connector disconnection, discrimination is low.
2. electric current detecting method
Electric current detecting method is the mainstream open circuit detection scheme of current high-voltage interlocking device, and this method is examined using constant-current source
It surveys, inputs constant current with certain chip.It goes wrong when connecing certain plug-in unit, then can not receive electric current.But this method can not
Detect specifically which connector is problematic, trouble is caused to maintenance, but there is preferable anti-electromagnetic interference capability.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high-voltage interlocking device broken circuit detecting systems.
The invention solves another technical problem be to provide it is a kind of utilize above-mentioned high-voltage interlocking device open circuit detection system
The method that system carries out breaking detection.
In order to solve the above technical problems, high-voltage interlocking device broken circuit detecting system, comprising: N number of male end connector, N number of mother
Plug-in unit, N number of first quasi-resistance, N number of second quasi-resistance and a sampling precision resistance are terminated, N is natural number；
Each male end connector respectively with a first kind resistor coupled in parallel, when male end connector and female end connector grafting
When, the first quasi-resistance forms first kind resistance string in series each other, and the first quasi-resistance is fixed resistance value resistance；
Each female end connector is in parallel with second quasi-resistance respectively, when male end connector and female end connector grafting
When, the second quasi-resistance forms the second quasi-resistance string in series each other, and the second quasi-resistance resistance value is different；
The first end of first kind resistance string or its second end series connection sampling precision resistance.
It is further improved, first the second quasi-resistance resistance value to n-th the second quasi-resistance resistance value constitutes arithmetic progression.
It is further improved, first the second quasi-resistance resistance value to n-th the second quasi-resistance resistance value constitutes Geometric Sequence.
It being further improved, first the second quasi-resistance resistance value to n-th the second quasi-resistance resistance value, which is constituted, is incremented by arithmetic progression,
Or the arithmetic progression that successively decreases.
It being further improved, first the second quasi-resistance resistance value to n-th the second quasi-resistance resistance value, which is constituted, is incremented by Geometric Sequence,
Or the Geometric Sequence that successively decreases.
It is further improved, first kind resistance is NK (i.e. 1K, 2K, 3K, 4K...... and so on), the second quasi-resistance
Resistance value is 1K-100K, and precision resistance resistance value is 1K-10K.
It is a kind of to carry out broken circuit detecting method using above-mentioned high-voltage interlocking device broken circuit detecting system, comprising:
1) the total resistance value R of high-voltage interlocking device broken circuit detecting system when all plug-in units patch is measuredDet；
2) at least one plug-in unit is disconnected every time, and record disconnects the number (position) of plug-in unit, and measurement obtains other residues and do not break
Open the total resistance value R of plug-in unitDet'；
3)RDet" it is the total resistance value that actual measurement obtains, R0 is sampling precision resistance resistance value, U1
Precision resistance both ends measurement voltage is sampled, UBR is uninterruptible power supply voltage；
4) the total resistance value R of high-voltage interlocking device broken circuit detecting system when being patched by comparing plug-in unitDetIt is obtained with actual measurement
Total resistance value RDet" disconnection plug-in unit is judged whether there is, if RDet"=RDet, then there is no plug-in unit is disconnected, if RDet" > RDetThen deposit
Disconnect plug-in unit.
It is further improved, further includes: 5) the total resistance value R obtained by actual measurementDet" other are remaining with acquisition in step 2)
The total resistance value R of plug-in unit is not disconnectedDet' the number (position) for obtaining and disconnecting plug-in unit is compared.
It is disconnected that high-voltage interlocking device is carried out using high-voltage interlocking device broken circuit detecting system of the invention and broken circuit detecting method
Road detection, at least has following technical effect that
1, the present invention realizes detection, anti-electromagnetic interference capability with higher using resistor matrix；
2, the present invention is able to detect that different total voltage values, energy in different plug connector open circuits using resistor matrix realization
Enough accurately judgements patch the connector number (position) of failure.
3, the present invention will save constant current chip from system configuration angle relative to electric current detecting method, only increase several electricity
Resistance, manufacturing cost are lower；The present invention saves mcu resource and a Mosfet, system to CMC relative to PWM type detection method
Cause this lower.
Detailed description of the invention
Present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the schematic equivalent circuit of one embodiment of the invention.
Description of symbols
A is high-voltage interlocking device female end
B is high-voltage interlocking device male end
C is first kind resistance string
C1 is the first end of first kind resistance string
C2 is the second end of first kind resistance string
D is the second quasi-resistance string
R1-R8 is resistance
R0 is sampling precision resistance
Specific embodiment
As shown in Figure 1, the present invention provides one embodiment of high-voltage interlocking device broken circuit detecting system, comprising: 4 male ends patch
Part B, 4 female end connector A, 4 the first quasi-resistance R1-R4,4 the second quasi-resistance R5-R8 and a sampling precision resistance R0；
Each male end connector B respectively with a first kind resistor coupled in parallel, with the first quasi-resistance R1-R4 shown in Fig. 1 by a left side
To being sequentially arranged in each male end connector B in order, as male end connector B and female end connector A grafting, the first quasi-resistance
R1-R4 forms first kind resistance string C in series each other, and the first quasi-resistance R1-R4 is fixed resistance value resistance, the present embodiment
Middle R1=R2=R3=R4=10K Ω；
Each female end connector A is in parallel with second quasi-resistance respectively, with the second quasi-resistance R5-R8 shown in Fig. 1 by a left side
To being sequentially arranged in each female end connector A in order, as male end connector B and female end connector A grafting, the second quasi-resistance
R5-R8 forms the second quasi-resistance string D in series each other, and the second quasi-resistance R5-R8 resistance value is different, in the present embodiment
Second quasi-resistance R5-R8, which is constituted, is incremented by arithmetic progression, R1=1K Ω, R2=2K Ω, R3=3K Ω, R4=4K Ω；
First end C1 or its second end C2 series connection the sampling precision resistance R0, the present embodiment R0 of first kind resistance string C
It is connected to second end C2, the R0=3K Ω of first kind resistance string C.
It is a kind of to carry out broken circuit detecting method using above-mentioned high-voltage interlocking device broken circuit detecting system, comprising:
1) the total resistance value R of high-voltage interlocking device broken circuit detecting system when all plug-in units patch is measuredDet, RDet=
7.7406kΩ；
2) at least one plug-in unit is disconnected every time, and record disconnects the number of plug-in unit, and measurement obtains other residues and do not disconnect plug-in unit
Total resistance value RDet'；Hereby citing is illustrated the total resistance value R obtained when measuring the different number plug-in units of each disconnection belowDet'。
When the connector of R5 parallel connection disconnects；
Measurement connector all-in resistance is RDet'=16.8315k Ω；
When the connector of R6 parallel connection disconnects；
Measurement connector all-in resistance is RDet'=16.0739k Ω；
When the connector of R7 parallel connection disconnects；
Measurement connector all-in resistance is RDet'=15.4329k Ω；
When the connector of R8 parallel connection disconnects；
Measurement connector all-in resistance is RDet'=14.8834k Ω；
When R5 and the connector of R6 parallel connection disconnect；
Measurement connector all-in resistance is RDet'=25.1648k Ω；
……
When the connector of R5, R6, R7 and R8 parallel connection simultaneously switches off；
Measurement connector all-in resistance is RDet'=40k Ω；
3)RDet" it is the total resistance value that actual measurement obtains, R0 is sampling precision resistance resistance value, U1
Precision resistance both ends measurement voltage is sampled, UBR is uninterruptible power supply voltage；
4) the total resistance value R of high-voltage interlocking device broken circuit detecting system when thering is plug-in unit to patch by comparingDetIt is obtained with actual measurement
Total resistance value RDet" disconnection plug-in unit is judged whether there is, if RDet"=RDet, then there is no disconnect plug-in unit；If RDet" > RDetThen
In the presence of disconnection plug-in unit.
5) the total resistance value R obtained by actual measurementDet" and the middle all-in resistances for obtaining other residues and not disconnecting plug-in unit of step 2)
Value RDet' the number for obtaining and disconnecting plug-in unit is compared.
Such as: RDet"=40k Ω then judges that the connector of R5, R6, R7 and R8 parallel connection simultaneously switches off.
RDet"=16.8315k Ω then judges that the connector of R5 parallel connection disconnects.
Above by specific embodiment and embodiment, invention is explained in detail, but these are not composition pair
Limitation of the invention.Without departing from the principles of the present invention, those skilled in the art can also make many deformations and change
Into these also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of high-voltage interlocking device broken circuit detecting system characterized by comprising N number of male end connector, N number of female end patch
Part, N number of first quasi-resistance, N number of second quasi-resistance and a sampling precision resistance, N is natural number；
Each male end connector respectively with a first kind resistor coupled in parallel, when male end connector and female end connector grafting,
One quasi-resistance forms first kind resistance string in series each other, and the first quasi-resistance is fixed resistance value resistance；
Each female end connector is in parallel with second quasi-resistance respectively, when male end connector and female end connector grafting, the
Two quasi-resistances form the second quasi-resistance string in series each other, and the second quasi-resistance resistance value is different；
The first end of first kind resistance string or its second end series connection sampling precision resistance.
2. high-voltage interlocking device broken circuit detecting system as described in claim 1, it is characterised in that: first the second quasi-resistance resistance value
Arithmetic progression is constituted to n-th the second quasi-resistance resistance value.
3. high-voltage interlocking device broken circuit detecting system as described in claim 1, it is characterised in that: first the second quasi-resistance resistance value
Geometric Sequence is constituted to n-th the second quasi-resistance resistance value.
4. high-voltage interlocking device broken circuit detecting system as claimed in claim 2, it is characterised in that: first the second quasi-resistance resistance value
It is constituted to n-th the second quasi-resistance resistance value and is incremented by arithmetic progression or the arithmetic progression that successively decreases.
5. high-voltage interlocking device broken circuit detecting system as claimed in claim 3, it is characterised in that: first the second quasi-resistance resistance value
It is constituted to n-th the second quasi-resistance resistance value and is incremented by Geometric Sequence or the Geometric Sequence that successively decreases.
6. high-voltage interlocking device broken circuit detecting system as described in claim 1, it is characterised in that: first kind resistance is NK,
Second quasi-resistance resistance value is 1K-100K, and precision resistance resistance value is 1K-10K.
7. a kind of carry out broken circuit detecting method using high-voltage interlocking device broken circuit detecting system described in claim 1, feature exists
In, comprising:
1) the total resistance value R of high-voltage interlocking device broken circuit detecting system when all plug-in units patch is measuredDet；
2) at least one plug-in unit is disconnected every time, and record disconnects the number of plug-in unit, and measurement obtains other residues and do not disconnect the total of plug-in unit
Resistance value RDet'；
3)RDet" it is the total resistance value that actual measurement obtains, R0 is sampling precision resistance resistance value, U1 sampling
Precision resistance both ends measurement voltage, UBR are uninterruptible power supply voltage；
4) the total resistance value R of high-voltage interlocking device broken circuit detecting system when being patched by comparing plug-in unitDetThe total electricity obtained with actual measurement
Resistance value RDet" disconnection plug-in unit is judged whether there is, if RDet"=RDet, then there is no plug-in unit is disconnected, if RDet" > RDetThen exist disconnected
Open plug-in unit.
8. high-voltage interlocking device broken circuit detecting system as claimed in claim 7 carries out broken circuit detecting method, which is characterized in that also wrap
It includes:
5) the total resistance value R obtained by actual measurementDet" and the middle total resistance values for obtaining other residues and not disconnecting plug-in unit of step 2)
RDet' the number for obtaining and disconnecting plug-in unit is compared.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810173677.3A CN110221154A (en) | 2018-03-02 | 2018-03-02 | High-voltage interlocking device broken circuit detecting system and broken circuit detecting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810173677.3A CN110221154A (en) | 2018-03-02 | 2018-03-02 | High-voltage interlocking device broken circuit detecting system and broken circuit detecting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999592A (en) * | 2020-07-13 | 2020-11-27 | 东风汽车集团有限公司 | Circuit and device for detecting the position of disconnection point of high voltage interlock circuit |
| CN112945072A (en) * | 2021-02-05 | 2021-06-11 | 上海建工集团股份有限公司 | Fence system with function of accurately identifying demolition position and use method thereof |
| CN113917368A (en) * | 2021-09-28 | 2022-01-11 | 潍柴动力股份有限公司 | High-voltage interlocking detection circuit, method and device |
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| JPH0819158A (en) * | 1994-06-28 | 1996-01-19 | Masaji Nakajima | Automatic sectional switch |
| CN104300597A (en) * | 2014-09-02 | 2015-01-21 | 奇瑞汽车股份有限公司 | High voltage loop interlocking structure and method for electric vehicle charging system |
| CN105270184A (en) * | 2015-10-26 | 2016-01-27 | 北京新能源汽车股份有限公司 | Electric automobile and high-low voltage interlocking detection circuit thereof |
| CN106143161A (en) * | 2016-08-24 | 2016-11-23 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of high pressure monitoring device of electric automobile |
| CN106882052A (en) * | 2017-04-13 | 2017-06-23 | 深圳市瀚路新能源汽车有限公司 | High-voltage interlocking loop and high-voltage interlocking loop detector |
| CN206644654U (en) * | 2017-04-13 | 2017-11-17 | 深圳市瀚路新能源汽车有限公司 | High-voltage interlocking loop and high-voltage interlocking loop detector |
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2018
- 2018-03-02 CN CN201810173677.3A patent/CN110221154A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0819158A (en) * | 1994-06-28 | 1996-01-19 | Masaji Nakajima | Automatic sectional switch |
| CN104300597A (en) * | 2014-09-02 | 2015-01-21 | 奇瑞汽车股份有限公司 | High voltage loop interlocking structure and method for electric vehicle charging system |
| CN105270184A (en) * | 2015-10-26 | 2016-01-27 | 北京新能源汽车股份有限公司 | Electric automobile and high-low voltage interlocking detection circuit thereof |
| CN106143161A (en) * | 2016-08-24 | 2016-11-23 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of high pressure monitoring device of electric automobile |
| CN106882052A (en) * | 2017-04-13 | 2017-06-23 | 深圳市瀚路新能源汽车有限公司 | High-voltage interlocking loop and high-voltage interlocking loop detector |
| CN206644654U (en) * | 2017-04-13 | 2017-11-17 | 深圳市瀚路新能源汽车有限公司 | High-voltage interlocking loop and high-voltage interlocking loop detector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999592A (en) * | 2020-07-13 | 2020-11-27 | 东风汽车集团有限公司 | Circuit and device for detecting the position of disconnection point of high voltage interlock circuit |
| CN112945072A (en) * | 2021-02-05 | 2021-06-11 | 上海建工集团股份有限公司 | Fence system with function of accurately identifying demolition position and use method thereof |
| CN113917368A (en) * | 2021-09-28 | 2022-01-11 | 潍柴动力股份有限公司 | High-voltage interlocking detection circuit, method and device |
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