CN108287536A - A kind of cathode contact device sintering detection apparatus and method - Google Patents
A kind of cathode contact device sintering detection apparatus and method Download PDFInfo
- Publication number
- CN108287536A CN108287536A CN201711431635.7A CN201711431635A CN108287536A CN 108287536 A CN108287536 A CN 108287536A CN 201711431635 A CN201711431635 A CN 201711431635A CN 108287536 A CN108287536 A CN 108287536A
- Authority
- CN
- China
- Prior art keywords
- contact device
- cathode contact
- detector
- contactor
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000005245 sintering Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 5
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention discloses a kind of cathode contact device sintering detection apparatus and method, described device includes power battery, positive contactor, cathode contact device, preliminary filling contactor, preliminary filling resistance；Further include sampling circuit and measure loop；One end of the sampling circuit is connected with the other end of the positive contactor, and the other end of the sampling circuit is connected with the cathode of the power battery；The sampling circuit includes concatenated first switch, first resistor and second resistance；The measure loop is connected in parallel on the both ends of the cathode detector；The measure loop includes concatenated signal source, 3rd resistor, second switch and the first diode, and is connected in parallel on first detector at the signal source and 3rd resistor both ends.The present invention can solve the closure life problems of preliminary filling contactor or positive contactor, solve the problems, such as high voltage bus LINK+ and LINK to vehicle body virtual pressures, enhance the anti-interference of measure loop and the confidence level of testing result.
Description
Technical field
The present invention relates to technical field of vehicle control more particularly to a kind of cathode contact device sintering detection apparatus and methods.
Background technology
With popularizing for new-energy automobile, new energy vehicle battery BAT belongs to high voltage platform, the big electricity of current supply circuit high pressure
Stream, to ensure that vehicle need to cut off bussed supply circuit when non-electrical safely.Contactor low conduction voltage drop high voltage performance so that
Contactor is widely used on new energy vehicle.In view of contactor has sintering failure, ensure vehicle safety, high voltage connector
Diagnosis be essential, but the method for solid detection cathode contact device adhesion is rare at present.
For safe and reliable solution cathode contact device adhesion problems, the present invention provides a kind of high negative of application possibility
Pole contactor sintering detection method, specifically, positive contactor of the invention are examined with cathode contact device using independent alternative
Disconnected, testing result is genuine and believable, and degree is high；Preliminary filling contactor or positive contactor must be first closed by improving diagnosis cathode contact device
Problem improves the service life of preliminary filling contactor or positive contactor；And the setting of voltage threshold is unrelated with battery pack voltage, using perseverance
Stream source or drive of constant voltage source, immunity to interference is high, and diagnostic area is accurate, with a high credibility；By increasing sampling circuit switch, high pressure is solved
Busbar LINK+ and LINK- to vehicle body virtual pressure problem.
Invention content
The present invention provides a kind of cathode contact device sintering detection apparatus and methods；
First aspect provides a kind of cathode contact device sintering detection apparatus, including power battery, positive contactor, cathode
Contactor, preliminary filling contactor, preliminary filling resistance；One end of the anode contactor is connected with the anode of the power battery, described
Cathode contact device is connected with the cathode of the power battery, is connect with the anode after the preliminary filling resistance and the series connection of preliminary filling contactor
Tentaculum is in parallel；
Further include sampling circuit and measure loop；
One end of the sampling circuit is connected with the other end of the positive contactor, the other end of the sampling circuit and
The cathode of the power battery is connected；The sampling circuit includes concatenated first switch, first resistor and second resistance；
The measure loop is connected in parallel on the both ends of the cathode detector；The measure loop include concatenated signal source,
3rd resistor, second switch and the first diode, and it is connected in parallel on first detector at the signal source and 3rd resistor both ends.
Further, the sampling circuit further includes the second detector, and second detector is connected to second electricity
The both ends of resistance, the voltage for detecting the second resistance both ends.
Further, described device further includes high-voltage load；
The other end of the anode contactor is the first connecting pin, and the other end of the cathode contact device is the second connection
End, the high-voltage load are connected between first connecting pin and the second connection end.
Further, the signal source is constant-current source or constant pressure source.
Second aspect provides a kind of cathode contact device sintering detection method, including：
When power battery remains static, first switch is disconnected；
The operating status of cathode contact device is detected, including：
It is closed second switch, and open signal source, signal source is made to inject second connection end,
The voltage of the signal source and 3rd resistor both ends is detected by the first detector；The cathode contact device it is current
In the case that state is off-state, judge whether the cathode contact device is sintered according to testing result.
Further, the current state of the cathode contact device be off-state in the case of, it is described according to testing result
Judge whether the cathode contact device is sintered, including：
If the result of the first detector detection is signal source voltage, judge that the time of day of the cathode contact device is
Off-state, consistent with the current state of cathode contact device, then the cathode contact device is un-sintered；
If the result of the first detector detection is diode drop voltage, the true of the cathode contact device is judged
Real state is closed state, and inconsistent with the current state of the cathode contact device, then the cathode contact device has been sintered.
Further, alarm is set at first detector；If state vs' result obtains the cathode contact
Device sintering state, then alarm, which is triggered, sends out alarm signal.
Further, memory is set at first detector, and the memory is for storing first detector
Testing result.
Further, the signal source is constant-current source or constant pressure source.
The present invention can solve the closure life problems of preliminary filling contactor or positive contactor；The present invention passes through to electrically returning
The control on road solves the problems, such as high voltage bus LINK+ and LINK- to vehicle body virtual pressures, improves corresponding high-voltage electric system
Safety problem；The present invention enhances the anti-interference of measure loop by injecting constant signal to cathode contact device measure loop
Property, increase the confidence level of testing result.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is cathode contact device sintering detection topological diagram in the prior art；
Fig. 2 is a kind of cathode contact device sintering detection topological diagram that embodiment one provides；
Fig. 3 is a kind of cathode contact device sintering detection method flow chart that embodiment two provides.
Fig. 4 is the method flow diagram that the operating status to cathode contact device that embodiment two provides is detected；
Fig. 5 is the method stream for judging the cathode contact device according to testing result and whether being sintered that embodiment two provides
Cheng Tu.
In figure：Power battery 1, positive contactor 2, cathode contact device 3, preliminary filling contactor 4, preliminary filling resistance 5, sampling circuit
6, measure loop 7, first switch 61, first resistor 62, second resistance 63, the second detector 64, the first connecting pin 65, signal source
71,3rd resistor 72, second switch 73, the first diode 74, the first detector 75, second connection end 76, the 4th resistance 77, height
Pressure load 8.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive
Include to be not necessarily limited to clearly arrange for example, containing the process of series of steps or unit, method, system, product or equipment
Those of go out step or unit, but may include not listing clearly or solid for these processes, method, product or equipment
The other steps or unit having.
As shown in Figure 1, cathode contact device sintering detection electric topology figure in the prior art, wherein system circuit leads to
It is disconnected to be controlled by positive contactor and cathode contact device；Specifically combine diagnosis of the Fig. 1 to positive contactor and cathode contact device
It illustrates：Including power battery, 1 positive contactor 2, cathode contact device 3, preliminary filling contactor 4 and preliminary filling resistance 5, institute
The one end for stating positive contactor is connected with the anode of the power battery, the cathode of the cathode contact device and the power battery
It is connected, it is in parallel with the positive contactor after the preliminary filling resistance and the series connection of preliminary filling contactor；It further include first resistor 62, second
Resistance 63,3rd resistor 72, the 4th resistance 77；One end of the first resistor is connected with the other end of the cathode contact device,
The other end of the first resistor and one end of the second resistance are connected in series with, and the other end of the second resistance is moved with described
The cathode of power battery is connected, and the both ends of the cathode contact device are attempted by after the 3rd resistor and the series connection of the 4th resistance.Wherein,
Further include the first detector and the second detector in the device of the prior art, first detector is connected to the two of second resistance
End, second detector are connected to the both ends of 3rd resistor.Wherein, the other end LINK+ of the positive contactor is first
The other end LINK- of connecting pin, the cathode contact device is second connection end, and the battery pack includes power battery anode (BAT
+) and positive battery cathode (BAT-) is specifically, the diagnosis of positive contactor：
Diagnosis disconnects：Detect voltages of the LINK+ (the first connecting pin) relative to BAT- (cathode of power battery), LINK+
Voltage relative to BAT-, which has, to be presented downward trend and is compared with battery pack stagnation pressure, if the two difference is larger, is recognized
It is already off for positive contactor.
Diagnosis is closed：Voltages of the LINK+ relative to BAT- is detected, LINK+ has relative to the voltage of BAT- is presented rising
It trend and is compared with battery pack stagnation pressure, if the two differs very little, then it is assumed that positive contactor is closed.
The diagnosis of cathode contact device：Wherein, it before diagnosing cathode contact device, needs to be closed positive contactor or is closed preliminary filling
Contactor.
Diagnosis disconnects：Voltages of the LINK- (second connection end) relative to BAT- is detected, if electricity of the LINK- relative to BAT-
Unchanged or change rate very little is pressed, and is compared relative to the voltage of BAT- with LINK+, if the two differs very little, is recognized
It is already off for cathode contact device.
Diagnosis is closed：Voltages of the LINK- relative to BAT- is detected, if LINK- is essentially 0 relative to the voltage of BAT-, and
It is compared relative to the voltage of BAT- without more apparent variation, and with LINK+, if the two differs greatly, then it is assumed that cathode contact
Device is closed.
Based on the above-mentioned prior art, wherein the problem is that：
Carry out cathode contact device diagnosis when, need to be closed positive contactor, can seriously affect the service life of positive contactor with
And there is high-voltage safety problem；
The diagnosis of positive and negative anodes contactor is not independent, is interacted, if one of break down, can be influenced another
The result confidence level of a contactor diagnosis；
Associated voltage judges the more difficult setting of thresholding, needs to accurately control sequential；Wherein, threshold voltage refers to above-mentioned diagnosis
The comparison of voltage in the process, wherein there is " very big " " very little ", voltage judges that thresholding refers to quantifying very big very little.Such as：
It is compared relative to the voltage of BAT- with LINK+, if the two differs greatly, then it is assumed that cathode contact device is closed；
In practical application, it may appear that high voltage bus LINK+ and LINK- to vehicle body virtual pressure problem；It should be noted that vehicle
On pass through that contactor connect with anode and cathode other one section, referred to as LINK, busbar, present invention use can also be become
LINK+ (the first connecting pin) and LINK- (second connection end) is indicated.
Embodiment one：
Based on above-mentioned technical problem, a kind of cathode contact device sintering detection apparatus is present embodiments provided, as shown in Fig. 2,
Including power battery 1, positive contactor 2, cathode contact device 3, preliminary filling contactor 4, preliminary filling resistance 5；The anode contactor 2
One end is connected with the anode of the power battery 1, and the cathode contact device 3 is connected with the cathode of the power battery 1, described pre-
Charging resistance 5 and preliminary filling contactor 4 are in parallel with the positive contactor 2 after connecting；
Further include sampling circuit 6 and measure loop 7；
One end of the sampling circuit 6 is connected with the other end of the positive contactor 2, the sampling circuit 6 it is another
End is connected with the cathode of the power battery 1；The sampling circuit 6 includes concatenated first switch 61, first resistor 62 and the
Two resistance 63；
The measure loop 7 is connected in parallel on the both ends of the cathode detector；The measure loop 7 includes concatenated signal source
71,3rd resistor 72, second switch 73 and the first diode 74, and it is connected in parallel on 72 both ends of the signal source 71 and 3rd resistor
The first detector 75.Wherein, first detector 75 is used for the voltage at 72 both ends of sensed signal sources 71 and 3rd resistor,
It is exactly voltage of 72 right end of the 3rd resistor to battery cathode, judges that cathode contact device is sintered shape by the detection voltage value
State；First diode 74 therein for circuit protection act on, signal source 71 therein be constant-current source or constant pressure source, preferably
5V。
Wherein, the position relationship of measure loop 7 and the component in sampling circuit 6 is not limited to the position in Fig. 1, can be with
It is exchanged, as long as corresponding function can be realized.
It being preferably carried out mode as one kind, the sampling circuit 6 further includes the second detector, second detector 74
The both ends of the second resistance 63 are connected to, the voltage for detecting 63 both ends of the second resistance is being mainly used for auxiliary just
The detection of pole contactor.
Further, described device further includes high-voltage load 8；The other end of the anode contactor 2 is the first connecting pin
65, the other end of the cathode contact device 3 is second connection end 76, the high-voltage load 8 be connected to first connecting pin with
Between the second connection end.
Embodiment two：
A kind of cathode contact device sintering detection method is present embodiments provided, as shown in figure 3, including：
S101. when power battery remains static, first switch is disconnected；
Wherein, first switch (disconnects when power battery remains static in battery pack, is for solving high voltage bus
LINK+ and LINK- to vehicle body virtual pressure problem.
S102. the operating status of cathode contact device is detected, as shown in figure 4, including：
S1021. it is closed second switch, and open signal source, signal source is made to inject second connection end, specifically, the letter
Number source is constant-current source or constant pressure source；
S1022. the voltage of the signal source and 3rd resistor both ends is detected by the first detector；In the cathode contact
In the case that the current state of device is off-state, judge whether the cathode contact device is sintered according to testing result.
Wherein, described in the case where the current state of the cathode contact device is off-state, sentence according to testing result
Whether the cathode contact device that breaks is sintered, as shown in figure 5, including：
If S1022a. the result of the first detector detection is signal source voltage, the cathode contact device is judged
Time of day be off-state, consistent with the current state of cathode contact device, then the cathode contact device is un-sintered；
If S1022b. the result of the first detector detection is that (diode here is namely for diode drop voltage
The first diode in Fig. 2), then judge that the time of day of the cathode contact device is closed state, is connect with the cathode
The current state of tentaculum is inconsistent, then the cathode contact device has been sintered.
Wherein, time of day is to make a kind of state that cathode contact device is being in conjunction with extraneous factor；Current state is
A kind of state that the control operation artificially given makes cathode contact device be in.
As a preferred embodiment, in the case where obtaining the cathode contact device sintering, additionally it is possible to pass through report
Alert device gives staff's prompting, carries out the maintenance or replacement of corresponding intrument；So accordingly, the present embodiment further includes：
Alarm is set at first detector；If state vs' result show that the cathode contact device has been sintered shape
State, then alarm, which is triggered, sends out alarm signal.
As a preferred embodiment, the information or code that whether are sintered for testing result or cathode contact device,
It can also further store, as the foundation subsequently inquired units test or repaired；So accordingly, the present embodiment also wraps
It includes：Memory is set at first detector, and the memory is used to store the testing result of first detector.
Importantly, the sintering detection of the positive contactor and cathode contact device of the present invention is independent, the two is not by shadow
It rings, that is to say, that can equally carry out positive contactor diagnosis for the topological diagram of Fig. 2.Method is：
It is closed first switch, by judging that LINK+ is detected the operating status of positive contactor BAT- voltages；Packet
It includes：In the case where the current state of positive contactor and preliminary filling contactor is disconnection, if passing through the electricity at second resistance both ends
It is battery pack voltage that LINK+ and the detection voltage at the both ends BAT-, which is calculated, in pressure, then positive contactor sintering；If detection voltage is
0, then positive contactor is normal.
Further below, description is given to the course of work of cathode contact device of the present invention according to fig. 2：
The first step：Switch is disconnected when battery pack remains static, and solves high voltage bus LINK+ and LINK- to vehicle body
Ground virtual pressure；
Second step：It carries out cathode contact device and disconnects diagnosis：
When switch S2 is closed, signal source is injected on LINK- and BAT-, and ADC (the first detector) detects R3 to BAT- electricity
Pressure, ADC (the first detector) detection voltage are signal source voltage, then judge that cathode contact device disconnects.
Third walks：It carries out cathode contact device and is closed diagnosis：
When switch S2 is closed, signal source is injected on LINK- and BAT-, and ADC (the first detector) detects R3 to BAT- electricity
Pressure, it is diode drop voltage that ADC (the first detector), which detects voltage, then judges that cathode contact device is closed.
Based on above-mentioned analysis, the present invention can：
1, pass through the improvement to existing cathode contact device diagnosis electric topology so that the sintering of cathode pole contactor detects
It is independent with positive contactor, does not have to again be closed positive contactor or preliminary filling contact when cathode contact device detects in advance
Device, to extend the service life of positive contactor or preliminary filling contactor；
2, by increasing sampling circuit switch in electric topology circuit, high voltage bus LINK+ and LINK- is solved to vehicle
Body ground virtual pressure problem, improves the safety problem of corresponding high-voltage electric system；
3, it is enhanced in cathode contact device detection process by injecting constant signal to cathode contact device measure loop
The anti-interference of measure loop, to increase the confidence level of testing result.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of cathode contact device sintering detection apparatus, including power battery (1), positive contactor (2), cathode contact device (3),
Preliminary filling contactor (4), preliminary filling resistance (5)；One end of the anode contactor is connected with the anode of the power battery, described negative
Pole contactor is connected with the cathode of the power battery, is contacted with the anode after the preliminary filling resistance and the series connection of preliminary filling contactor
Device is in parallel；
It is characterized in that, further including sampling circuit (6) and measure loop (7)；
One end of the sampling circuit is connected with the other end of the positive contactor, the other end of the sampling circuit with it is described
The cathode of power battery is connected；The sampling circuit (6) includes concatenated first switch (61), first resistor (62) and the second electricity
It hinders (63)；
The measure loop is connected in parallel on the both ends of the cathode detector；The measure loop (7) includes concatenated signal source
(71), 3rd resistor (72), second switch (73) and the first diode (74), and it is connected in parallel on the signal source and 3rd resistor
First detector (75) at both ends.
2. the apparatus according to claim 1, which is characterized in that the sampling circuit further includes the second detector (64), institute
The both ends that the second detector is connected to the second resistance are stated, the voltage for detecting the second resistance both ends.
3. the apparatus according to claim 1, which is characterized in that described device further includes high-voltage load (8)；
The other end of the anode contactor is the first connecting pin, and the other end of the cathode contact device is second connection end, institute
High-voltage load is stated to be connected between first connecting pin and the second connection end.
4. the apparatus according to claim 1, which is characterized in that the signal source is constant-current source or constant pressure source.
5. a kind of method carrying out the sintering detection of cathode contact device using claim 1 described device, which is characterized in that including：
When power battery remains static, first switch is disconnected；
The operating status of cathode contact device is detected, including：
It is closed second switch, and open signal source, signal source is made to inject second connection end,
The voltage of the signal source and 3rd resistor both ends is detected by the first detector；In the current shape of the cathode contact device
In the case that state is off-state, judge whether the cathode contact device is sintered according to testing result.
6. according to the method described in claim 5, it is characterized in that, the current state in the cathode contact device is off-state
In the case of, it is described to judge whether the cathode contact device is sintered according to testing result, including：
If the result of the first detector detection is signal source voltage, judge that the time of day of the cathode contact device is to disconnect
State, consistent with the current state of cathode contact device, then the cathode contact device is un-sintered；
If the result of the first detector detection is diode drop voltage, the true shape of the cathode contact device is judged
State is closed state, inconsistent with the current state of the cathode contact device, then the cathode contact device has been sintered.
7. according to the method described in claim 6, it is characterized in that, alarm is arranged at first detector；If state
Comparing result obtains cathode contact device sintering state, then alarm, which is triggered, sends out alarm signal.
8. according to the method described in claim 6, it is characterized in that, memory, the storage are arranged at first detector
Device is used to store the testing result of first detector.
9. according to the method described in claim 5, it is characterized in that, the signal source is constant-current source or constant pressure source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431635.7A CN108287536A (en) | 2017-12-26 | 2017-12-26 | A kind of cathode contact device sintering detection apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431635.7A CN108287536A (en) | 2017-12-26 | 2017-12-26 | A kind of cathode contact device sintering detection apparatus and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108287536A true CN108287536A (en) | 2018-07-17 |
Family
ID=62832226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711431635.7A Pending CN108287536A (en) | 2017-12-26 | 2017-12-26 | A kind of cathode contact device sintering detection apparatus and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108287536A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725252A (en) * | 2019-03-13 | 2019-05-07 | 海马汽车有限公司 | A kind of relay status detection circuit and its method |
| CN111806258A (en) * | 2020-06-30 | 2020-10-23 | 比亚迪股份有限公司 | Vehicle high-voltage power distribution system, high-voltage safety control method and device and storage medium |
| CN112083323A (en) * | 2020-07-23 | 2020-12-15 | 浙江高泰昊能科技有限公司 | Relay adhesion detection circuit and detection method thereof |
| CN112389200A (en) * | 2019-07-31 | 2021-02-23 | 比亚迪股份有限公司 | Detection circuit and method for contactor sintering and vehicle |
| CN113092922A (en) * | 2021-04-26 | 2021-07-09 | 中国第一汽车股份有限公司 | Independent diagnosis device and method for high-voltage contactor of power battery system |
| CN113330323A (en) * | 2020-10-21 | 2021-08-31 | 深圳欣锐科技股份有限公司 | Contactor state detection circuit, system and vehicle |
| CN113533926A (en) * | 2020-04-15 | 2021-10-22 | 郑州宇通客车股份有限公司 | Battery system charging circuit and fault detection method and device thereof |
| CN113721160A (en) * | 2020-05-26 | 2021-11-30 | 郑州宇通客车股份有限公司 | Battery system heating loop and fault detection method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142466A (en) * | 2013-05-06 | 2014-11-12 | 广州汽车集团股份有限公司 | Automotive relay contact closed-state detecting system and method |
| CN204422720U (en) * | 2015-02-13 | 2015-06-24 | 广州汽车集团股份有限公司 | Electric automobile high-voltage system and relay status pick-up unit thereof |
| DE102015008467A1 (en) * | 2015-07-01 | 2016-01-28 | Daimler Ag | Device and method for checking a function monitoring device of a contactor of a motor vehicle |
| CN105988082A (en) * | 2015-02-13 | 2016-10-05 | 广州汽车集团股份有限公司 | Detection method and apparatus for relay state of high-voltage system of electric car |
| CN107284246A (en) * | 2017-07-04 | 2017-10-24 | 无锡英捷汽车科技有限公司 | A kind of electric automobile main contactor failure detector |
| CN107422257A (en) * | 2017-08-29 | 2017-12-01 | 宁德时代新能源科技股份有限公司 | Relay detection circuit and unit |
-
2017
- 2017-12-26 CN CN201711431635.7A patent/CN108287536A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142466A (en) * | 2013-05-06 | 2014-11-12 | 广州汽车集团股份有限公司 | Automotive relay contact closed-state detecting system and method |
| CN204422720U (en) * | 2015-02-13 | 2015-06-24 | 广州汽车集团股份有限公司 | Electric automobile high-voltage system and relay status pick-up unit thereof |
| CN105988082A (en) * | 2015-02-13 | 2016-10-05 | 广州汽车集团股份有限公司 | Detection method and apparatus for relay state of high-voltage system of electric car |
| DE102015008467A1 (en) * | 2015-07-01 | 2016-01-28 | Daimler Ag | Device and method for checking a function monitoring device of a contactor of a motor vehicle |
| CN107284246A (en) * | 2017-07-04 | 2017-10-24 | 无锡英捷汽车科技有限公司 | A kind of electric automobile main contactor failure detector |
| CN107422257A (en) * | 2017-08-29 | 2017-12-01 | 宁德时代新能源科技股份有限公司 | Relay detection circuit and unit |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725252A (en) * | 2019-03-13 | 2019-05-07 | 海马汽车有限公司 | A kind of relay status detection circuit and its method |
| CN112389200A (en) * | 2019-07-31 | 2021-02-23 | 比亚迪股份有限公司 | Detection circuit and method for contactor sintering and vehicle |
| CN113533926A (en) * | 2020-04-15 | 2021-10-22 | 郑州宇通客车股份有限公司 | Battery system charging circuit and fault detection method and device thereof |
| CN113533926B (en) * | 2020-04-15 | 2022-12-13 | 宇通客车股份有限公司 | Battery system charging circuit and fault detection method and device thereof |
| CN113721160A (en) * | 2020-05-26 | 2021-11-30 | 郑州宇通客车股份有限公司 | Battery system heating loop and fault detection method thereof |
| CN113721160B (en) * | 2020-05-26 | 2022-12-13 | 宇通客车股份有限公司 | Battery system heating loop and fault detection method thereof |
| CN111806258A (en) * | 2020-06-30 | 2020-10-23 | 比亚迪股份有限公司 | Vehicle high-voltage power distribution system, high-voltage safety control method and device and storage medium |
| CN112083323A (en) * | 2020-07-23 | 2020-12-15 | 浙江高泰昊能科技有限公司 | Relay adhesion detection circuit and detection method thereof |
| CN113330323A (en) * | 2020-10-21 | 2021-08-31 | 深圳欣锐科技股份有限公司 | Contactor state detection circuit, system and vehicle |
| WO2022082527A1 (en) * | 2020-10-21 | 2022-04-28 | 深圳欣锐科技股份有限公司 | Contactor state detecting circuit, system and vehicle |
| CN113092922A (en) * | 2021-04-26 | 2021-07-09 | 中国第一汽车股份有限公司 | Independent diagnosis device and method for high-voltage contactor of power battery system |
| CN113092922B (en) * | 2021-04-26 | 2023-10-03 | 中国第一汽车股份有限公司 | Independent diagnosis device and method for high-voltage contactor of power battery system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108287536A (en) | A kind of cathode contact device sintering detection apparatus and method | |
| CN105548892B (en) | Fault detection system, method and device and the electric vehicle of battery system | |
| CN103884988B (en) | Battery pack fault detection device and detection method | |
| CN105137336B (en) | Detect the diagnostic method of electric automobile high-voltage relay failure | |
| CN109100618A (en) | High-tension battery Insulation Inspection System and method | |
| CN107064638B (en) | A kind of insulation resistance detection device and method based on injection periodic time self-adapting strategy | |
| CN104142466B (en) | A kind of AUTOMOTIVE RELAY contact closure condition detecting system and its detection method | |
| CN107064803A (en) | The online test method of battery internal short-circuit | |
| CN108802605A (en) | Relay adhesion detection method and system | |
| CN108107274A (en) | Modified pure electric automobile multiple spot electric leakage insulation resistance on-line monitoring system and method | |
| CN107031410A (en) | A kind of electric vehicle pre-charging circuit and its method for diagnosing faults | |
| CN107290676B (en) | Method and device for detecting fusing and open circuit of main fuse of storage battery pack | |
| CN106053947A (en) | Insulation resistance detection circuit and method of electric automobile power battery, and electric automobile | |
| CN105259458B (en) | Verify battery bag management system insulating monitoring precision and earth leakage protective apparatus and method | |
| CN208188203U (en) | Insulation Resistance Tester for automotive power | |
| CN107167690A (en) | A kind of voltage acquisition system for battery pack broken thread detector and method | |
| CN105759147A (en) | Integrated test device for battery management system of electric vehicle | |
| CN106908719A (en) | The diagnostic system of vehicle DC charge relay | |
| CN209280857U (en) | Diagnostic circuit, the Insulation Inspection System of Insulation Inspection System | |
| CN105606950A (en) | Diagnosis method and diagnosis system for voltage sampling line fault of battery management system | |
| CN107490767A (en) | Insulation detecting method, system and the vehicle of battery bag | |
| CN206892292U (en) | A kind of batteries main fuse fusing and open circuit detecting device | |
| CN108152750A (en) | The battery charging and discharging parameter identification method and system of a kind of electric vehicle | |
| CN208239523U (en) | A kind of insulating resistor detecting circuit | |
| CN107290672A (en) | A kind of method that copper bar loosens between detection battery for battery management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180717 |