CN104442406B - A kind of method for judging high-voltage relay adhesion - Google Patents
A kind of method for judging high-voltage relay adhesion Download PDFInfo
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- CN104442406B CN104442406B CN201410599918.2A CN201410599918A CN104442406B CN 104442406 B CN104442406 B CN 104442406B CN 201410599918 A CN201410599918 A CN 201410599918A CN 104442406 B CN104442406 B CN 104442406B
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Abstract
The present invention provides a kind of method for judging high-voltage relay adhesion, for the relay adhesion decision problem without auxiliary contact, on normal before high pressure, the voltage change situation at the motor two ends reported by electric machine controller, to judge problem of the relay with the presence or absence of adhesion, the truth of the voltage change that car load is loaded above outside real reaction cell can be compared, can find that relay has the situation of adhesion in time, prevent it is lower electricity after because car load device band high pressure, caused potential safety hazard.
Description
Technical field
The present invention relates to a kind of high-voltage relay detection field, particularly a kind of method for judging high-voltage relay adhesion.
Background technology
Battery management system（BMS）Detection to the relay working condition in its high-pressure system is electric to electric powered motor
On the high pressure of pond electric, lower electric process can be normally carried out it is extremely important, if high-voltage relay sticks together, under electrokinetic cell electricity
Shi Zehui is because of car load device band high pressure, and causes potential safety hazard；Current relay adhesion judges all to adopt substantially band auxiliary to touch
The relay of point judged, but as present electric automobile is much from the relay without auxiliary contact, therefore it is original
The method judged by adhesion of the feedback signal of direct detection auxiliary contact to relay has not been applied to.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of adhesion judged without auxiliary contact relay
The method for judging high-voltage relay adhesion of situation.
To solve above-mentioned technical problem, the technical scheme that the present invention is provided is：A kind of side for judging high-voltage relay adhesion
Method, comprises the steps：
A. self-inspection is carried out after electricity in battery management system low pressure；
B., after the completion of battery management system self-inspection, the init state that electric machine controller is reported is detected, is judged at first
In section, whether electric machine controller initializes and completes, if then the second period of time delay initialization completion signal is reported to car load control
Device processed, and the magnitude of voltage at motor two ends that electric machine controller is reported is detected, V1 is designated as, subsequently into next step；If otherwise will
Electric machine controller initialization time long fault-signal is reported to entire car controller, and stops upper electric current journey；
C. after battery management system receives electricity instruction on the high pressure of entire car controller, the 3rd period of time delay, detection electricity
The magnitude of voltage at the motor two ends that machine controller is reported, is designated as V2；
D. whether battery management system judges magnitude of voltage V2 more than magnitude of voltage V1, if then judging anode relay and negative pole
There is the situation of adhesion simultaneously in relay, this failure is reported entire car controller, and stops upper electric current journey；If otherwise entering next
Step；
E. battery management system control preliminary filling relay closure, detects what electric machine controller was reported after the 4th period of time delay
The magnitude of voltage at motor two ends, is designated as V3；
F. whether battery management system judges magnitude of voltage V3 more than magnitude of voltage V2, if it is viscous then to judge that negative pole relay is present
This failure is reported entire car controller, and stops upper electric current journey by situation even；If otherwise entering next step；
G. battery management system control preliminary filling relay disconnects, and then controls negative pole relay closure, and detects motor control
The magnitude of voltage at the motor two ends that device processed is reported, is designated as V4.
H. whether battery management system judges magnitude of voltage V4 more than magnitude of voltage V3, if it is viscous then to judge that anode relay is present
This failure is reported entire car controller, and stops upper electric current journey by situation even；Normally upper electric current journey is entered otherwise.
As further prioritization scheme, go back the 5th period of time delay after preliminary filling relay is closed in step E, and will
To entire car controller, voltage is surveyed in time delay to the state reporting of preliminary filling relay closure again again afterwards.
As further prioritization scheme, after step G breaks preliminary filling relay and closure negative pole relay it
The 5th period of time delay is distinguished afterwards, and including the state reporting full-vehicle control disconnected preliminary filling relay with negative pole relay closure
The step of device；
As further prioritization scheme, the situation of negative pole relay adhesion in step F, is reported to entire car controller
After be handled as follows：Preliminary filling relay is disconnected, the state reporting for after postponing for the 5th period disconnecting preliminary filling relay is to car load
Controller, then negative pole relay failure condition is persistently reported to entire car controller, and no longer carry out electricity on normal high pressure.
As further prioritization scheme, the situation of anode relay adhesion in step H, is reported to entire car controller
After be handled as follows：Negative pole relay is disconnected, state reporting car load control negative pole relay disconnected after postponing for the 5th period
Device processed, then persistently reports anode relay failure condition, and no longer carries out electricity on normal high pressure.
In the control determination methods, the anode relay can be positive pole relay or preliminary filling relay, alternatively just
Pole relay and preliminary filling relay.
First period of above-mentioned time delay, the second period, the 3rd period, the 4th period and the 5th period are set according to actual conditions
Fixed, generally, the first period may be set to 10～30 seconds, and the second period may be set to 300～600 milliseconds, the 3rd period
100～300 milliseconds are may be set to, the 4th period may be set to 100～200 milliseconds, the 5th period may be set to 20～100 millis
Second.
Compared with prior art, the invention has the advantages that：
1st, for the relay adhesion decision problem without auxiliary contact, the method judged using difference, on normal
Before high pressure, the voltage change situation at the electric machine controller two ends reported by electric machine controller judges that relay whether there is
The problem of adhesion, can compare the truth of the voltage change of capacitor element above car load outside real reaction cell, energy
Find that in time relay has the situation of adhesion, prevent after lower electricity because of car load device band high pressure, caused potential safety hazard.
2nd, the situation of change of the voltage that MCU is reported is judged by substep, judges whether that the electric capacity to motor has individual charging
Process, if there is charging process, then there is the situation of relay adhesion in explanation, need to open the health that battery bag checks relay
Situation.
3rd, carry out the judgement of relay adhesion during per high pressure on subnormal, and when there is relay adhesion not
Carry out again normally going up electric current journey, in order to the problem that can find in time to exist when user uses.
Description of the drawings
Fig. 1 is embodiment of the present invention electrical block diagram；
Fig. 2 is embodiment of the present invention determination methods flow chart.
Specific embodiment
For the ease of it will be appreciated by those skilled in the art that carrying out further to the present invention below in conjunction with accompanying drawing and embodiment
Describe in detail.
Embodiment
It is illustrated in figure 1 power battery pack H1, battery management system high-voltaghe compartment H2 and electric automobile motor system H3 connection
Figure, wherein battery management system high-voltaghe compartment H2 includes battery management system（BMS）, and just it is connected to its internal total anode
Pole relay K1, the negative pole relay K2 for being connected to its internal total negative terminal, also including the phase for being parallel to positive pole relay K1 two ends
Mutually the preliminary filling relay K4 and preliminary filling resistance R of series connection, also connects negative pole relay K2 including one end, and other end connection control is electronic
The motor control relay K3 that automobile motor system H3 is opened and disconnected；Electric automobile motor system H3 includes electric machine controller
（MCU）With the electric capacity C for being parallel to electric machine controller two ends.
As shown in Fig. 2 a kind of method for judging high-voltage relay adhesion, comprises the steps：
A. self-inspection is carried out after electricity in battery management system low pressure；
B. after the completion of battery management system self-inspection, the init state that reports of electric machine controller is detected, is judged in 20 seconds
Whether electric machine controller initializes completes, if then 500 milliseconds of time delay initialization completion signal is reported to entire car controller
（VCU）, and the magnitude of voltage at motor two ends that electric machine controller is reported is detected, V1 is designated as, subsequently into next step；If otherwise will
Electric machine controller initialization time long fault-signal is reported to entire car controller, and stops upper electric current journey；
C., after battery management system receives electricity instruction on the high pressure of entire car controller, 200 milliseconds of time delay detects motor
The magnitude of voltage at the motor two ends of controller report, is designated as V2；
D. whether battery management system judges magnitude of voltage V2 more than magnitude of voltage V1, if then judging anode relay and negative pole
There is the situation of adhesion simultaneously in relay, this failure is reported entire car controller, and stops upper electric current journey；If otherwise entering next
Step；
E. battery management system control preliminary filling relay closure, 50 milliseconds of time delay, and the shape that preliminary filling relay is closed
State reports entire car controller, then detects the magnitude of voltage at the motor two ends that electric machine controller is reported, note again after 150 milliseconds of time delay
For V3；
F. whether battery management system judges magnitude of voltage V3 more than magnitude of voltage V2, if it is viscous then to judge that negative pole relay is present
Situation even, is then turned off preliminary filling relay, and the state reporting for after postponing 50 milliseconds disconnecting preliminary filling relay is to full-vehicle control
Device, then negative pole relay failure condition is persistently reported to entire car controller, and stop upper electric current journey；If otherwise entering next step
Suddenly；
G. battery management system control preliminary filling relay disconnects, the state for after 50 milliseconds of time delay disconnecting preliminary filling relay
Entire car controller is reported, negative pole relay closure, state reporting negative pole relay closed after 50 milliseconds of time delay is then controlled
Entire car controller, then detects the magnitude of voltage at the motor two ends that electric machine controller is reported, is designated as V4.
H. whether battery management system judges magnitude of voltage V4 more than magnitude of voltage V3, if it is viscous then to judge that anode relay is present
Situation even, disconnects negative pole relay, the state reporting entire car controller for after postponing 50 milliseconds disconnecting negative pole relay, then
Anode relay failure condition, electric current journey in stopping are reported persistently；Normally upper electric current journey is entered otherwise.
In the control determination methods, the anode relay can be positive pole relay or preliminary filling relay, alternatively just
Pole relay and preliminary filling relay.
It is the wherein specific implementation of the present invention above, its description is more concrete and detailed, but therefore can not manage
Solution is the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from
On the premise of present inventive concept, some deformations and improvement can also be made, these obvious alternative forms belong to this
Bright protection domain.
Claims (6)
1. a kind of method for judging high-voltage relay adhesion, including step：A. self-inspection is carried out after electricity in battery management system low pressure；
After the completion of battery management system self-inspection, the init state that electric machine controller is reported is detected；Characterized in that, also including following step
Suddenly：
B. judge whether electric machine controller initializes within the first period to complete, if then the second period of time delay will initialize
Into signal reporting to entire car controller, and the magnitude of voltage at motor two ends that electric machine controller is reported is detected, be designated as V1, subsequently into
Next step；If electric machine controller initialization time long fault-signal is reported to entire car controller otherwise, and stop upper electricity
Flow process；
C., after battery management system receives electricity instruction on the high pressure of entire car controller, the 3rd period of time delay, detect motor control
The magnitude of voltage at the motor two ends that device processed is reported, is designated as V2；
D. whether battery management system judges magnitude of voltage V2 more than magnitude of voltage V1, if then judging anode relay and negative pole relay
There is the situation of adhesion simultaneously in device, this failure is reported entire car controller, and stops upper electric current journey；If otherwise entering next step
Suddenly；
E. battery management system control preliminary filling relay closure, detects the motor that electric machine controller is reported after the 4th period of time delay
The magnitude of voltage at two ends, is designated as V3；
F. whether battery management system judges magnitude of voltage V3 more than magnitude of voltage V2, if then judging that negative pole relay has adhesion
This failure is reported entire car controller, and stops upper electric current journey by situation；If otherwise entering next step；
G. battery management system control preliminary filling relay disconnects, and then controls negative pole relay closure, and detects electric machine controller
The magnitude of voltage at the motor two ends for reporting, is designated as V4.
H. whether battery management system judges magnitude of voltage V4 more than magnitude of voltage V3, if then judging that anode relay has adhesion
This failure is reported entire car controller, and stops upper electric current journey by situation；Normally upper electric current journey is entered otherwise.
2. it is according to claim 1 judge high-voltage relay adhesion method, it is characterised in that：Close in step E
Go back the 5th period of time delay after preliminary filling relay, and the state reporting that preliminary filling relay is closed is to entire car controller, Zhi Houzai
Voltage is surveyed in time delay again.
3. it is according to claim 1 judge high-voltage relay adhesion method, it is characterised in that：Step G breaks
Respectively the 5th period of time delay after preliminary filling relay and after closure negative pole relay, and including preliminary filling relay is disconnected and
The step of state reporting entire car controller of negative pole relay closure.
4. the method for judging high-voltage relay adhesion according to claim 1, it is characterised in that to whole in step F
Vehicle controller is handled as follows after reporting the situation of negative pole relay adhesion：Preliminary filling relay is disconnected, after postponing for the 5th period
The state reporting that preliminary filling relay disconnects persistently is reported into negative pole relay failure feelings to entire car controller, then to entire car controller
Condition, and no longer carry out electricity on normal high pressure.
5. the method for judging high-voltage relay adhesion according to claim 1, it is characterised in that to whole in step H
Vehicle controller is handled as follows after reporting the situation of anode relay adhesion：Negative pole relay is disconnected, after postponing for the 5th period
The state reporting entire car controller that negative pole relay is disconnected, then persistently reports anode relay failure condition, and no longer enters
Electricity on the normal high pressure of row.
6. it is according to claim 1 judge high-voltage relay adhesion method, it is characterised in that：The anode relay can
For positive pole relay or preliminary filling relay, alternatively positive pole relay and preliminary filling relay.
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| CN201410599918.2A CN104442406B (en) | 2014-10-31 | 2014-10-31 | A kind of method for judging high-voltage relay adhesion |
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| CN201410599918.2A CN104442406B (en) | 2014-10-31 | 2014-10-31 | A kind of method for judging high-voltage relay adhesion |
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| CN104442406B true CN104442406B (en) | 2017-04-05 |
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| CN104777423B (en) * | 2015-05-06 | 2018-11-20 | 科力远混合动力技术有限公司 | The detection method of relay status in a kind of ni-mh hybrid power vehicle high voltage system |
| CN105137377B (en) * | 2015-06-30 | 2018-06-29 | 上海翼锐汽车科技有限公司 | Battery pack relay fault simulation injects test circuit |
| CN105172608B (en) * | 2015-08-03 | 2017-09-29 | 中通客车控股股份有限公司 | Electric control circuit and control method above and below a kind of electric automobile high-voltage system |
| CN105196886B (en) * | 2015-09-16 | 2017-10-20 | 北京新能源汽车股份有限公司 | Battery system of electric automobile and state diagnosis method of high-voltage relay in battery system |
| CN105109347B (en) * | 2015-09-18 | 2018-05-18 | 惠州市亿能电子有限公司 | Electric automobile high-voltage electrification circuit and its control method |
| CN105244953A (en) * | 2015-10-19 | 2016-01-13 | 金龙联合汽车工业（苏州）有限公司 | Pre-charging system for electrical vehicle and pre-charging control method |
| CN105485867B (en) * | 2015-12-18 | 2018-12-07 | 珠海格力电器股份有限公司 | Control method, device and circuit of air conditioner |
| CN105527567A (en) * | 2016-01-27 | 2016-04-27 | 惠州市蓝微新源技术有限公司 | High voltage relay adhesion detection circuit of battery management system and detection method |
| CN106183823A (en) * | 2016-07-08 | 2016-12-07 | 北汽福田汽车股份有限公司 | Vehicle, high voltage system and control method thereof |
| CN106324423A (en) * | 2016-09-28 | 2017-01-11 | 深圳麦格米特电气股份有限公司 | Method for detecting the adhesion of power charging pile contactor contact |
| CN106842006B (en) * | 2016-12-27 | 2020-01-31 | 安徽力高新能源技术有限公司 | relay adhesion detection method |
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| CN107782950B (en) * | 2017-10-23 | 2023-10-13 | 宁德时代新能源科技股份有限公司 | High voltage detection circuit and method, detector, battery system, vehicle and computer readable storage medium |
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| CN201985573U (en) * | 2011-02-14 | 2011-09-21 | 天津市松正电动汽车技术股份有限公司 | Precharge management system |
| CN102175971B (en) * | 2011-02-18 | 2013-10-16 | 奇瑞汽车股份有限公司 | Relay state detection method and device of electric vehicle high-voltage system |
| CN102269790A (en) * | 2011-04-22 | 2011-12-07 | 上海恒动汽车电池有限公司 | Fault diagnosis circuit for high-voltage relay of power storage battery |
| JP2013225996A (en) * | 2012-04-22 | 2013-10-31 | Denso Corp | Abnormality diagnosis device for power supply control system |
| KR101394751B1 (en) * | 2012-12-28 | 2014-05-15 | 현대자동차주식회사 | Method for detecting fuse disconnection of dc-dc converter |
| CN203854586U (en) * | 2013-12-13 | 2014-10-01 | 惠州市亿能电子有限公司 | Control circuit for high-voltage power-on/off judging adhesion state of relay of electric vehicle |
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