CN107031410A - A kind of electric vehicle pre-charging circuit and its method for diagnosing faults - Google Patents
A kind of electric vehicle pre-charging circuit and its method for diagnosing faults Download PDFInfo
- Publication number
- CN107031410A CN107031410A CN201710224383.4A CN201710224383A CN107031410A CN 107031410 A CN107031410 A CN 107031410A CN 201710224383 A CN201710224383 A CN 201710224383A CN 107031410 A CN107031410 A CN 107031410A
- Authority
- CN
- China
- Prior art keywords
- voltage
- relay
- preliminary filling
- circuit
- magnitude
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
-
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of electric vehicle pre-charging circuit and its method for diagnosing faults, a kind of electric vehicle pre-charging circuit, including battery pack, positive pole relay K1, preliminary filling relay K2, negative pole relay K3, preliminary filling resistance R, pre-charging capacitor C, also include first voltage and detect circuit and second voltage detection circuit, described first voltage detection circuit is arranged at battery pack two ends, the second voltage detection circuit on one side connection battery electrode end, the other end is connected with preliminary filling relay K2.Battery management system is calculated according to the magnitude of voltage of detection first voltage detection circuit and second voltage detection electric circuit inspection during detection, so as to realize the detection of relay virtual condition, and failure can be quoted in time in the case of high tension loop failure, stop high pressure power on operation, it is ensured that the safety of battery system and vehicle.
Description
Technical field
The present invention relates to electric automobile field, relate more specifically to a kind of electric vehicle pre-charging circuit and its fault diagnosis
Method.
Background technology
Electric automobile is, it is necessary to enter horizontal high voltage power on operation during startup, and completion high-voltage relay is controlled and preliminary filling
Electric control process.The relay of feedback-less contact, in high pressure power up, battery management system are used current high-voltage relay more
System needs to detect the virtual condition of relay, judges relay failure that may be present, electric in high pressure to securely achieve.Cause
This is, it is necessary to high pressure electrification circuit and high pressure electrification control method reasonable in design.And existing common electric automobile high-voltage preliminary filling
Electrical circuit topology is simple, is only capable of realizing high pressure precharge and lower electric control, is broken down for preliminary filling electrical circuit, relay occurs
The situation of failure can not be recognized comprehensively, on there is electric automobile during electric fault, it is impossible to quickly investigate failure cause, even
It is also possible to continue the upper electric process of electric automobile, so as to further result in the failure propagation of electric automobile.
The content of the invention
For the deficiency of existing scheme, the present invention provides a kind of electric vehicle pre-charging circuit and its method for diagnosing faults.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：A kind of electric vehicle pre-charging circuit, bag
Include battery pack, positive pole relay K1, preliminary filling relay K2, negative pole relay K3, preliminary filling resistance R, pre-charging capacitor C, the positive pole
Relay K1 and negative pole relay K3 one end connect the positive terminal and negative pole end of battery pack respectively, the positive pole relay K1 and
Negative pole relay K3 other end connection load two ends, the pre-charging capacitor is parallel to load two ends, described preliminary filling resistance R and
Preliminary filling relay K2 constitutes series arm, and described series arm is arranged at positive pole relay K1 two ends, described preliminary filling resistance R
It is connected to the positive terminal of battery pack；Also include first voltage and detect circuit and second voltage detection circuit, described first voltage
Detection circuit is arranged at battery pack two ends, the second voltage detection circuit on one side connection battery electrode end, the other end with it is pre-
Fill relay K2 connections.
Further, in addition to asymmetrical circuit element, described asymmetrical circuit element be arranged on preliminary filling relay K2 with it is pre-
Charging resistance R between and be arranged on second voltage detection circuit and preliminary filling relay K2 between.
Further, described asymmetrical circuit element include the first asymmetrical circuit element D1, the second asymmetrical circuit element D2,
3rd asymmetrical circuit element D3, the first asymmetrical circuit element D1 is arranged between preliminary filling relay K2, preliminary filling resistance R, and described
One asymmetrical circuit element D1 anode connection preliminary filling resistance, the negative electrode connection preliminary filling relay of the first asymmetrical circuit element D1
K2；It is arranged on the second asymmetrical circuit element D2 between the branch road of second voltage detection circuit and the connection of preliminary filling relay K2 two ends
With the 3rd asymmetrical circuit element D3, the second described asymmetrical circuit element D2 positive poles connect the first asymmetrical circuit element D1 the moon
Pole, described the second asymmetrical circuit element D2 negative poles connection second voltage detection circuit；The 3rd described asymmetrical circuit element D3
Positive pole connects preliminary filling relay K2 and pre-charging capacitor C tie point, described the 3rd asymmetrical circuit element D3 negative poles connection second
Voltage detecting circuit.
Further, described asymmetrical circuit element is diode.
Further, the number of diodes of the first described asymmetrical circuit element D1 is one, second unilateal conduction
Element D2 number of diodes is three, and the number of diodes of the 3rd asymmetrical circuit element D3 is two.
A kind of electric vehicle pre-charging circuit method for diagnosing faults based on above-mentioned pre-charge circuit, comprises the following steps：
1）In battery management system low pressure after electricity, detect that circuit and second voltage detect that circuit measuring is drawn by first voltage
V1, V2 magnitude of voltage, if the magnitude of voltage that V2 is measured is 0, judges and report preliminary filling resistance R to damage failure, and stop power up；
If the magnitude of voltage that V2 is measured is the value that V1 subtracts Va, judges and report positive pole relay K1 adhesion faults, and stop upper electric mistake
Journey；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vb, judges and report preliminary filling relay K2 adhesion faults, and stop upper electricity
Process；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vc, judge that preliminary filling loop is normal, into step 2）；
2）Preliminary filling relay K2 is closed, detects that circuit and second voltage detect that circuit measuring draws V1, V2 electricity by first voltage
Pressure value, if the magnitude of voltage that V2 is measured subtracts Vc value for V1, judges and reports preliminary filling relay K2 failure of removal, disconnect preliminary filling
Relay K2 simultaneously stops power up；If the magnitude of voltage that V2 is measured is risen by preliminary filling curve, judge and report negative pole relay
K3 adhesion faults, disconnect preliminary filling relay K2 and stop power up；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vb, sentence
Disconnected preliminary filling relay K2 normally closeds simultaneously disconnect preliminary filling relay K2, into step 3）；
3）Negative pole relay K3 is closed, preliminary filling relay K2 is closed again, pre-charge process is carried out, circuit is detected by first voltage
V1, V2 magnitude of voltage are drawn with second voltage detection circuit measuring, if the value that the voltage value stabilization that V2 is measured subtracts Vb in V1, sentences
Break and report negative pole relay K3 failure of removal, disconnect negative pole relay K3, preliminary filling relay K2 and stop power up；If V2
The magnitude of voltage measured is risen by preliminary filling curve, is normally carried out pre-charge process, is then judged negative pole relay K3 normally closeds, is entered
Step 4）；
4）Pre-charge pressure reaches after desired value that closure positive pole relay K1, delay time T disconnect preliminary filling relay K2, if V2 is surveyed
The magnitude of voltage obtained is less than the value that V1 subtracts Va, and V2 magnitudes of voltage are on a declining curve, then judges and report positive pole relay K1 to fail
Failure, disconnects negative pole relay K3, preliminary filling relay K2, positive pole relay K1 and stops power up；If the voltage that V2 is measured
It is worth the value that Va is subtracted for V1, then judges that positive pole relay K1 is closed successfully, electricity is completed in high pressure, vehicle can be used normally.
Va, Vb, Vc are respectively the first setting value, the second setting set according to the asymmetrical circuit element of pre-charge circuit
Value, the 3rd setting value.
Further, the value of the first setting value Va is 1 ~ 1.4 volt；The value of the second setting value Vb is 1.5 ~ 2
Volt；The value of the 3rd setting value Vc is 2.1 ~ 2.8 volts.
Further, described delay time T is 40 to 60 milliseconds.
Further, the first voltage detection circuit and second voltage detection circuit measuring draw V1, V2 magnitude of voltage
Acquisition Error is ± 0.1 volt.
In summary, compared with prior art, the invention has the advantages that：（1）This electric vehicle pre-charging electricity
Road and its method for diagnosing faults, can be normally carried out high pressure power on operation, realize the detection of relay virtual condition；（2）In height
Push back in the power up of road, failure can be quoted in time when battery breaks down, stop high pressure power on operation, it is ensured that battery system
The safety of system and vehicle.
Brief description of the drawings
Fig. 1 is a kind of electric vehicle pre-charging circuit structural representation of the present invention.
Fig. 2 is a kind of electric vehicle pre-charging circuit method for diagnosing faults flow chart of the present invention.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to the limitation to this patent is interpreted as, below in conjunction with drawings and examples pair
The present invention is further elaborated.
As described in Figure 1, a kind of electric vehicle pre-charging circuit, including battery pack, positive pole relay K1, preliminary filling relay
K2, negative pole relay K3, preliminary filling resistance R, pre-charging capacitor C, positive pole relay K1 and negative pole the relay K3 one end difference
Connect the positive terminal and negative pole end of battery pack, the other end connection load two of positive pole relay K1 and negative pole the relay K3
End, the pre-charging capacitor is parallel to load two ends, described preliminary filling resistance R and preliminary filling relay K2 composition series arms, described
Series arm be arranged at positive pole relay K1 two ends, described preliminary filling resistance R is connected to the positive terminal of battery pack；Also include the
One voltage detecting circuit and second voltage detection circuit, described first voltage detection circuit are arranged at battery pack two ends, described
Second voltage detection circuit on one side connection battery electrode end, the other end is connected with preliminary filling relay K2.This electric automobile preliminary filling
Circuit can normally enter horizontal high voltage power-on and power-off operation, and also set up first voltage detection circuit and second voltage detection electricity
Road, the detection for precharging circuit relay virtual condition provides effective voltage data.
In the present embodiment, the precharging circuit also includes asymmetrical circuit element, and described asymmetrical circuit element is arranged on
Between preliminary filling relay K2 and preliminary filling resistance R and be arranged on second voltage detection circuit and preliminary filling relay K2 between.
Described asymmetrical circuit element includes the first asymmetrical circuit element D1, the second asymmetrical circuit element D2, the 3rd unidirectional
Conducting element D3, the first asymmetrical circuit element D1 are arranged between preliminary filling relay K2, preliminary filling resistance R, and described first unidirectionally leads
Electric device D1 anode connection preliminary filling resistance, the negative electrode connection preliminary filling relay K2 of the first asymmetrical circuit element D1；Set
The second asymmetrical circuit element D2 and the 3rd between the branch road that second voltage detects circuit and the connection of preliminary filling relay K2 two ends
Asymmetrical circuit element D3, the second described asymmetrical circuit element D2 positive poles connect the first asymmetrical circuit element D1 negative electrode, described
The second asymmetrical circuit element D2 negative poles connection second voltage detection circuit；Described the 3rd asymmetrical circuit element D3 positive poles connection
Preliminary filling relay K2 and pre-charging capacitor C tie point, described the 3rd asymmetrical circuit element D3 negative poles connection second voltage detection
Circuit.
In the present embodiment, described asymmetrical circuit element is diode.
The number of diodes of the first described asymmetrical circuit element D1 is one, the two of the second asymmetrical circuit element D2
Pole pipe quantity is three, and the number of diodes of the 3rd asymmetrical circuit element D3 is two.
For the person of ordinary skill of the art, other multi-forms can also be made on the basis of the above description
Change or variation, such as：Using different types of diode, it should all belong to protection scope of the present invention.
Pre-charge circuit method for diagnosing faults of the invention, comprises the following steps as described in Figure 2：
1）In battery management system low pressure after electricity, detect that circuit and second voltage detect that circuit measuring is drawn by first voltage
V1, V2 magnitude of voltage, if the magnitude of voltage that V2 is measured is 0, judges and report preliminary filling resistance R to damage failure, and stop power up；
If the magnitude of voltage that V2 is measured is the value that V1 subtracts Va, judges and report positive pole relay K1 adhesion faults, and stop upper electric mistake
Journey；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vb, judges and report preliminary filling relay K2 adhesion faults, and stop upper electricity
Process；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vc, judge that preliminary filling loop is normal, into step 2）, otherwise judge simultaneously
Precharge loop fault is reported, stops power up；
2）Preliminary filling relay K2 is closed, detects that circuit and second voltage detect that circuit measuring draws V1, V2 electricity by first voltage
Pressure value, if the magnitude of voltage that V2 is measured subtracts Vc value for V1, judges and reports preliminary filling relay K2 failure of removal, disconnect preliminary filling
Relay K2 simultaneously stops power up；If the magnitude of voltage that V2 is measured is risen by preliminary filling curve, judge and report negative pole relay
K3 adhesion faults, disconnect preliminary filling relay K2 and stop power up；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vb, sentence
Disconnected preliminary filling relay K2 closures are normal, and disconnect preliminary filling relay K2, into step 3）, otherwise judge preliminary filling relay K2 events
Barrier, disconnects pre-charge-relay K2 and stops upper electricity；
3）Negative pole relay K3 is closed, preliminary filling relay K2 is closed again, pre-charge process is carried out, circuit is detected by first voltage
V1, V2 magnitude of voltage are drawn with second voltage detection circuit measuring, if the value that the voltage value stabilization that V2 is measured subtracts Vb in V1, sentences
Break and report negative pole relay K3 failure of removal, disconnect negative pole relay K3, preliminary filling relay K2 and stop power up；If V2
The magnitude of voltage measured is risen by preliminary filling curve, is normally carried out pre-charge process, is then judged negative pole relay K3 normally closeds, is entered
Step 4）, otherwise judge and report negative pole relay K3 failures, and stop power up；
4）Pre-charge pressure reaches after desired value that closure positive pole relay K1, delay time T disconnect preliminary filling relay K2, if V2 is surveyed
The magnitude of voltage obtained is less than the value that V1 subtracts Va, and V2 magnitudes of voltage are on a declining curve, then judges and report positive pole relay K1 to fail
Failure, disconnects negative pole relay K3, preliminary filling relay K2, positive pole relay K1 and stops power up；If the voltage that V2 is measured
It is worth the value that Va is subtracted for V1, then judges that positive pole relay K1 is closed successfully, electricity is completed in high pressure, vehicle can be used normally, otherwise
Judge and report positive pole relay（K1）Failure, and stop power up.
Wherein, Va, Vb, Vc are respectively according to the first setting value of the asymmetrical circuit element of pre-charge circuit setting, second
Setting value, the 3rd setting value.
V1, V2 are not constants in data above, and specific data are according to actual conditions such as battery types and customer demands
Depending on, the value of the first setting value Va is 1 ~ 1.4 volt；The value of the second setting value Vb is 1.5 ~ 2 volts；Described 3rd
Setting value Vc value is 2.1 ~ 2.8 volts.
Delay time T described in the present embodiment is 40 to 60 milliseconds.
First voltage described in the present embodiment detects that circuit and second voltage detection circuit measuring draw V1, V2 magnitude of voltage
Acquisition Error is ± 0.1 volt.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Any modifications, equivalent substitutions and improvements made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of electric vehicle pre-charging circuit, including battery pack, positive pole relay（K1）, preliminary filling relay（K2）, negative pole after
Electrical equipment（K3）, preliminary filling resistance（R）, pre-charging capacitor（C）, the positive pole relay（K1）With negative pole relay（K3）One end difference
Connect the positive terminal and negative pole end of battery pack, the positive pole relay（K1）With negative pole relay（K3）The other end connection load
Two ends, the pre-charging capacitor is parallel to load two ends, it is characterised in that described preliminary filling resistance（R）With preliminary filling relay（K2）
Series arm is constituted, described series arm is arranged at positive pole relay（K1）Two ends, described preliminary filling resistance（R）It is connected to electricity
The positive terminal of pond group；Also include first voltage and detect circuit and second voltage detection circuit, described first voltage detection circuit
It is arranged at battery pack two ends, the second voltage detection circuit on one side connection battery electrode end, the other end and preliminary filling relay
（K2）Connection.
2. a kind of electric vehicle pre-charging circuit as claimed in claim 1, it is characterised in that also including asymmetrical circuit element,
Described asymmetrical circuit element is arranged on preliminary filling relay（K2）With preliminary filling resistance（R）Between and be arranged on second voltage detection
Circuit and preliminary filling relay（K2）Between.
3. a kind of electric vehicle pre-charging circuit as claimed in claim 2, it is characterised in that described asymmetrical circuit element bag
Include the first asymmetrical circuit element（D1）, the second asymmetrical circuit element（D2）, the 3rd asymmetrical circuit element（D3）, the first unilateal conduction
Element（D1）It is arranged on preliminary filling relay（K2）, preliminary filling resistance（R）Between, first asymmetrical circuit element（D1）Anode connect
Connect preliminary filling resistance, first asymmetrical circuit element（D1）Negative electrode connection preliminary filling relay（K2）；It is arranged on second voltage inspection
Slowdown monitoring circuit and preliminary filling relay（K2）The second asymmetrical circuit element between the branch road of two ends connection（D2）With the 3rd unilateal conduction
Element（D3）, described the second asymmetrical circuit element（D2）Positive pole connects the first asymmetrical circuit element（D1）Negative electrode, it is described
Second asymmetrical circuit element（D2）Negative pole connection second voltage detection circuit；The 3rd described asymmetrical circuit element（D3）Positive pole connects
Connect preliminary filling relay（K2）And pre-charging capacitor（C）Tie point, the 3rd described asymmetrical circuit element（D3）Negative pole connection second
Voltage detecting circuit.
4. a kind of electric vehicle pre-charging circuit as claimed in claim 3, it is characterised in that described asymmetrical circuit element is
Diode.
5. a kind of electric vehicle pre-charging circuit as claimed in claim 4, it is characterised in that described the first unilateal conduction member
Part（D1）Number of diodes be one, second asymmetrical circuit element（D2）Number of diodes be three, the described 3rd
Asymmetrical circuit element（D3）Number of diodes be two.
6. a kind of electric vehicle pre-charging circuit method for diagnosing faults based on Claims 1 to 5 pre-charge circuit, its feature exists
In comprising the following steps：
1）In battery management system low pressure after electricity, detect that circuit and second voltage detect that circuit measuring is drawn by first voltage
V1, V2 magnitude of voltage, if the magnitude of voltage that V2 is measured is 0, judges and report preliminary filling resistance（R）Failure is damaged, and stops upper electric mistake
Journey；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Va, judges and report positive pole relay（K1）In adhesion fault, and stopping
Electric process；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vb, judges and report preliminary filling relay（K2）Adhesion fault, and stop
Only power up；If the magnitude of voltage that V2 is measured is the value that V1 subtracts Vc, judge that preliminary filling loop is normal, into step 2）；
2）Close preliminary filling relay（K2）, detect that circuit and second voltage detect that circuit measuring draws V1, V2 by first voltage
Magnitude of voltage, if the magnitude of voltage that V2 is measured subtracts Vc value for V1, judges and reports preliminary filling relay（K2）Failure of removal, disconnects
Preliminary filling relay（K2）And stop power up；If the magnitude of voltage that V2 is measured is risen by preliminary filling curve, judge and report negative pole
Relay（K3）Adhesion fault, disconnects preliminary filling relay（K2）And stop power up；If the magnitude of voltage that V2 is measured subtracts for V1
Vb value, then judge preliminary filling relay（K2）Normally closed simultaneously disconnects preliminary filling relay（K2）, into step 3）；
3）Close negative pole relay（K3）, it is closed again preliminary filling relay（K2）, pre-charge process is carried out, is detected by first voltage
Circuit and second voltage detection circuit measuring draw V1, V2 magnitude of voltage, if the voltage value stabilization that V2 is measured subtracts Vb value in V1,
Then judge and report negative pole relay（K3）Failure of removal, disconnects negative pole relay（K3）, preliminary filling relay（K2）And on stopping
Electric process；If the magnitude of voltage that V2 is measured is risen by preliminary filling curve, pre-charge process is normally carried out, then judges negative pole relay（K3）
Normally closed, into step 4）；
4）Pre-charge pressure is reached after desired value, closes positive pole relay（K1）, delay time T disconnection preliminary filling relays（K2）If,
The magnitude of voltage that V2 is measured is less than the value that V1 subtracts Va, and V2 magnitudes of voltage are on a declining curve, then judge and report positive pole relay
（K1）Failure of removal, disconnects negative pole relay（K3）, preliminary filling relay（K2）, positive pole relay（K1）And stop power up；
If the magnitude of voltage that V2 is measured is the value that V1 subtracts Va, positive pole relay is judged（K1）Close successfully, electricity is completed in high pressure, vehicle
Can normally it use.
7.Va, Vb, Vc be respectively according to the asymmetrical circuit element of pre-charge circuit set the first setting value, the second setting value,
3rd setting value.
8. a kind of electric vehicle pre-charging circuit method for diagnosing faults as claimed in claim 6, it is characterised in that described first
Setting value Va value is 1 ~ 1.4 volt；The value of the second setting value Vb is 1.5 ~ 2 volts；The value of the 3rd setting value Vc
For 2.1 ~ 2.8 volts.
9. a kind of electric vehicle pre-charging circuit method for diagnosing faults as claimed in claim 6, it is characterised in that described prolongs
When time T be 40 to 60 milliseconds.
10. a kind of electric vehicle pre-charging circuit method for diagnosing faults as claimed in claim 6, it is characterised in that described the
One voltage detecting circuit and second voltage detection circuit measuring show that the Acquisition Error of V1, V2 magnitude of voltage is ± 0.1 volt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224383.4A CN107031410B (en) | 2017-04-07 | 2017-04-07 | Electric automobile pre-charging circuit and fault diagnosis method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710224383.4A CN107031410B (en) | 2017-04-07 | 2017-04-07 | Electric automobile pre-charging circuit and fault diagnosis method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107031410A true CN107031410A (en) | 2017-08-11 |
| CN107031410B CN107031410B (en) | 2019-12-13 |
Family
ID=59533510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710224383.4A Active CN107031410B (en) | 2017-04-07 | 2017-04-07 | Electric automobile pre-charging circuit and fault diagnosis method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107031410B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108839568A (en) * | 2018-09-07 | 2018-11-20 | 珠海银隆电器有限公司 | Electric vehicle pre-charging control method and device |
| CN109342941A (en) * | 2018-12-07 | 2019-02-15 | 珠海格力电器股份有限公司 | Electric relay detection device and its detection method |
| CN109633411A (en) * | 2018-12-21 | 2019-04-16 | 中国北方车辆研究所 | A kind of special vehicle high voltage power distribution circuit state detection system |
| 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 |
| CN109823285A (en) * | 2017-11-20 | 2019-05-31 | 河南森源重工有限公司 | Electric system, power-on and power-off control method and control system above and below electric automobile high-voltage |
| CN109839587A (en) * | 2017-11-24 | 2019-06-04 | 中信国安盟固利动力科技有限公司 | A kind of fault detection of battery system and positioning device and method |
| CN110286317A (en) * | 2019-04-29 | 2019-09-27 | 惠州市亿能电子有限公司 | A kind of diagnostic circuit and method of battery system |
| CN111337823A (en) * | 2020-04-23 | 2020-06-26 | 科华恒盛股份有限公司 | Relay failure detection device and method |
| CN111619353A (en) * | 2020-05-26 | 2020-09-04 | 深圳天邦达科技有限公司 | State management method for automobile start-stop battery management system |
| CN113071315A (en) * | 2021-03-10 | 2021-07-06 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN114325502A (en) * | 2021-11-30 | 2022-04-12 | 章鱼博士智能技术(上海)有限公司 | Method and device for diagnosing pre-charging circuit and power battery system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100001582A1 (en) * | 2008-07-01 | 2010-01-07 | Gm Global Technology Operations, Inc. | Precharging a high-voltage bus using a voltage-regulated power supply |
| CN104228588A (en) * | 2014-09-05 | 2014-12-24 | 北京新能源汽车股份有限公司 | Pure electric vehicle high voltage loop diagnosis circuit |
| CN104553813A (en) * | 2014-12-16 | 2015-04-29 | 惠州市亿能电子有限公司 | Electric automobile high-voltage power-on circuit and control method thereof |
| CN105109347A (en) * | 2015-09-18 | 2015-12-02 | 惠州市亿能电子有限公司 | High-voltage power-on circuit of electric automobile, and control method of high-voltage power-on circuit |
| CN105548892A (en) * | 2015-12-02 | 2016-05-04 | 北京新能源汽车股份有限公司 | System, method and device of fault detection of battery system and electric vehicle |
-
2017
- 2017-04-07 CN CN201710224383.4A patent/CN107031410B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100001582A1 (en) * | 2008-07-01 | 2010-01-07 | Gm Global Technology Operations, Inc. | Precharging a high-voltage bus using a voltage-regulated power supply |
| CN104228588A (en) * | 2014-09-05 | 2014-12-24 | 北京新能源汽车股份有限公司 | Pure electric vehicle high voltage loop diagnosis circuit |
| CN104553813A (en) * | 2014-12-16 | 2015-04-29 | 惠州市亿能电子有限公司 | Electric automobile high-voltage power-on circuit and control method thereof |
| CN105109347A (en) * | 2015-09-18 | 2015-12-02 | 惠州市亿能电子有限公司 | High-voltage power-on circuit of electric automobile, and control method of high-voltage power-on circuit |
| CN105548892A (en) * | 2015-12-02 | 2016-05-04 | 北京新能源汽车股份有限公司 | System, method and device of fault detection of battery system and electric vehicle |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109823285A (en) * | 2017-11-20 | 2019-05-31 | 河南森源重工有限公司 | Electric system, power-on and power-off control method and control system above and below electric automobile high-voltage |
| CN109839587B (en) * | 2017-11-24 | 2023-11-07 | 中信国安盟固利动力科技有限公司 | Fault detection and positioning device and method for battery system |
| CN109839587A (en) * | 2017-11-24 | 2019-06-04 | 中信国安盟固利动力科技有限公司 | A kind of fault detection of battery system and positioning device and method |
| CN108839568A (en) * | 2018-09-07 | 2018-11-20 | 珠海银隆电器有限公司 | Electric vehicle pre-charging control method and device |
| CN108839568B (en) * | 2018-09-07 | 2024-02-23 | 珠海银隆电器有限公司 | Electric automobile pre-charge control method and device |
| CN109342941A (en) * | 2018-12-07 | 2019-02-15 | 珠海格力电器股份有限公司 | Electric relay detection device and its detection method |
| CN109633411A (en) * | 2018-12-21 | 2019-04-16 | 中国北方车辆研究所 | A kind of special vehicle high voltage power distribution circuit state detection system |
| CN109633411B (en) * | 2018-12-21 | 2021-04-30 | 中国北方车辆研究所 | High-voltage distribution circuit state detection system for special vehicle |
| 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 |
| CN110286317A (en) * | 2019-04-29 | 2019-09-27 | 惠州市亿能电子有限公司 | A kind of diagnostic circuit and method of battery system |
| CN110286317B (en) * | 2019-04-29 | 2021-12-24 | 惠州市亿能电子有限公司 | Diagnostic circuit and method of battery system |
| CN111337823A (en) * | 2020-04-23 | 2020-06-26 | 科华恒盛股份有限公司 | Relay failure detection device and method |
| CN111619353A (en) * | 2020-05-26 | 2020-09-04 | 深圳天邦达科技有限公司 | State management method for automobile start-stop battery management system |
| CN113071315B (en) * | 2021-03-10 | 2022-10-11 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN113071315A (en) * | 2021-03-10 | 2021-07-06 | 重庆长安汽车股份有限公司 | Method and system for detecting connection integrity of high-voltage electrical system of electric automobile |
| CN114325502A (en) * | 2021-11-30 | 2022-04-12 | 章鱼博士智能技术(上海)有限公司 | Method and device for diagnosing pre-charging circuit and power battery system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107031410B (en) | 2019-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107031410A (en) | A kind of electric vehicle pre-charging circuit and its method for diagnosing faults | |
| CN104553813B (en) | Control method for electric automobile high-voltage power-on circuit | |
| CN109100618B (en) | High-voltage battery insulation detection system and method | |
| CN104391241B (en) | A kind of electrokinetic cell high-voltage relay state detection circuit and its method | |
| CN101025436B (en) | High-voltage safety monitoring device for electric automobile | |
| CN105929325B (en) | Relay adhesion detection circuit and relay adhesion detection method | |
| CN105109347B (en) | Electric automobile high-voltage electrification circuit and its control method | |
| CN104142466B (en) | A kind of AUTOMOTIVE RELAY contact closure condition detecting system and its detection method | |
| CN205229379U (en) | Adaptive electric automobile high voltage safety failure diagnosis early warning orientation inspect system | |
| CN103558496B (en) | A kind of one pole earthed system and failure detector, method | |
| CN105128688B (en) | A kind of electric automobile starts control method and control system | |
| CN207114697U (en) | High-tension battery Insulation Inspection System | |
| CN105572540B (en) | Adaptive electric automobile high-voltage safety fault diagnosis early warning positioning monitoring system | |
| CN104597396B (en) | The method that detection is powered on into horizontal high voltage to electric vehicle | |
| CN103576046A (en) | Storage battery system having storage battery protector and diagnostic device, and diagnostic method thereof | |
| CN108802605A (en) | Relay adhesion detection method and system | |
| CN104142433A (en) | Active type direct-current system insulation resistor detection method | |
| CN107064638A (en) | A kind of insulation resistance detection device and method based on injection periodic time self-adapting strategy | |
| CN207819809U (en) | A kind of electric machine controller circuit system of recognizable relay adhesion fault | |
| CN102175971A (en) | Relay state detection method and device of electric vehicle high-voltage system | |
| CN206710509U (en) | A kind of insulation resistance of DC system observation circuit and system | |
| CN103675591B (en) | A kind of electrokinetic cell output bus multipoint insulation fault detection circuit | |
| CN107422185A (en) | A kind of insulation resistance of DC system observation circuit, system and method | |
| CN205768708U (en) | A kind of parallel electrokinetic cell system | |
| CN106908719A (en) | The diagnostic system of vehicle DC charge relay |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |