CN108362982A - A kind of high-voltage isulation Fault Locating Method of new-energy automobile - Google Patents
A kind of high-voltage isulation Fault Locating Method of new-energy automobile Download PDFInfo
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- CN108362982A CN108362982A CN201810066894.2A CN201810066894A CN108362982A CN 108362982 A CN108362982 A CN 108362982A CN 201810066894 A CN201810066894 A CN 201810066894A CN 108362982 A CN108362982 A CN 108362982A
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- Prior art keywords
- insulation resistance
- new
- energy automobile
- relay group
- relay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
Abstract
The invention discloses a kind of high-voltage isulation Fault Locating Methods of new-energy automobile, include the following steps：S1 uses multiple relay groups, controls each high voltage parts respectively：S2 disconnects the relay group of control high voltage parts when there is insulation fault, and insulation resistance is acquired using BMS；The insulation resistances of the S3 based on acquisition, failure judgement source.Beneficial effects of the present invention：By using multigroup relay, the form of each high voltage parts is controlled respectively, can specifically navigate to insulation fault parts.
Description
Technical field
The present invention relates to vehicle failure detection technical fields, it particularly relates to a kind of high-voltage isulation of new-energy automobile
Fault Locating Method.
Background technology
The development prospect of new-energy automobile is wide, will necessarily become the main traffic trip tool of future world.New energy
Automobile is widely regarded as one of the main path for the problems such as solving automobile exhaust pollution and short petroleum-based energy, with new energy
The technology of automobile improves, and market is universal and fast-developing, is also carried to the properties of product, reliability, safety of its key components and parts
Go out increasingly higher demands.
Pure electric automobile is equipped with the power battery of high-energy, high power capacity, high voltage platform, to ensure the peace of driver
Entirely, state compulsion requires battery management system that must have Insulation monitoring function；But current Insulation monitoring mainstream technology scheme is only
The insulating resistance value that entire high tension loop can be measured, can not navigate to specific parts.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Invention content
For above-mentioned technical problem in the related technology, the present invention proposes that a kind of high-voltage isulation failure of new-energy automobile is fixed
Position method, can position high-voltage isulation failure.
To realize the above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
A kind of high-voltage isulation Fault Locating Method of new-energy automobile, it is fixed by means of a kind of high-voltage isulation failure of new-energy automobile
Position system, which includes positive pole and cathode, and the cathode is connect with relay K1, and the anode connects with relay K2
It connects, the first high tension loop is in series between the relay K1 and the relay K2, be parallel with first high tension loop
Several groups detection unit, wherein the detection unit includes but not limited to electrical heating circuit, electric air conditioner loop, AC charging time
Road, DC charging circuit, each detection unit are respectively in series with the first relay, the electrical heating circuit and relay
K6 connects, and the electricity air conditioner loop is connected with relay K8, and the AC charging circuit is connected with relay K10, the direct current
Charge circuit is connected with relay K12, and the second relay, the electrical heating circuit are equipped between the adjacent detection unit in parallel
It is connected with relay K5 between first high tension loop, is connected between the electrical heating circuit and the electric air conditioner loop
Relay K7, relay K9, the AC charging circuit are connected between the electricity air conditioner loop and the AC charging circuit
It is connected with relay K11 between the DC charging circuit；
When there is insulation fault, which includes the following steps：
S1 disconnects outermost relay K11 and relay K12, and battery management system BMS acquires insulation resistance again, such as insulate
Resistance value is increased in normal range (NR), then failure judgement source is DC charging circuit 5；If insulation resistance does not change, then exclude straight
5 failure of current charge circuit；
S2 disconnects relay K9 again and relay K10, BMS acquire insulation resistance again, as insulating resistance value is increased to normal model
In enclosing, then failure judgement source is AC charging circuit 6；If insulation resistance does not change, then 6 failure of AC charging circuit is excluded；
S3 disconnects relay K7 again and relay K8, BMS acquire insulation resistance again, as insulating resistance value is increased to normal model
In enclosing, then failure judgement source is electric air conditioner loop 7；If insulation resistance does not change, then 7 failure of electric air conditioner loop is excluded；
S4 disconnects relay K5 again and relay K6, BMS acquire insulation resistance again, as insulating resistance value is increased to normal model
In enclosing, then failure judgement source is electrical heating circuit 8；If insulation resistance does not change, then 8 failure of electrical heating circuit is excluded；
S5 disconnects relay K3 again and relay K4, BMS acquire insulation resistance again, as insulating resistance value is increased to normal model
In enclosing, then failure judgement source is other high tension loops；If insulation resistance does not change, then other high voltage faults are excluded, are judged as electricity
Machine controller fault.
Further, the detection unit includes electrical heating circuit, electric air conditioner loop, AC charging time successively from inside to outside
Road, DC charging circuit.
Further, first high tension loop is driving circuit.
Further, the driving circuit is electric machine controller circuit.
Further, the sequence of failure judgement is followed successively by DC charging circuit, AC charging circuit, electric air conditioner loop, electricity
Heating circuit, electric machine controller circuit.
Beneficial effects of the present invention：By using multigroup relay, the form of each high voltage parts, energy are controlled respectively
It is enough specifically to navigate to insulation fault parts.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structure of the high-voltage isulation fault location system of the new-energy automobile described according to embodiments of the present invention
Schematic diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belong to what the present invention protected
Range.
As shown in Figure 1, a kind of high-voltage isulation Fault Locating Method of new-energy automobile described according to embodiments of the present invention,
Include the following steps：
S1 uses multiple relay groups, controls each high voltage parts respectively：
S2 disconnects the relay group of control high voltage parts when there is insulation fault, and insulation resistance is acquired using BMS；
The insulation resistances of the S3 based on acquisition, failure judgement source.
Further, in step S1, the high voltage parts are followed successively by inwardly from outermost：DC charging circuit, friendship
Current charge circuit, electric air-conditioning, electrical heating, such as electricity steering, other high tension loops of electric braking, wherein control the direct current and fill
The relay group of circuit is K11 and K12, and the relay group for controlling the AC charging circuit is K9 and K10, controls the electricity
The relay group of air-conditioning is K7 and K8, and it is K5 and K6 to control the electrically heated relay group, controls other high tension loops
Relay group be K3 and K4.
Further, in step S2, the relay group for controlling each high voltage parts is disconnected successively inwardly from outermost,
Insulation resistance is acquired using BMS.
Further, in step S3, such as insulating resistance value is increased in normal range (NR), then judges that the source of trouble is
The high voltage parts；If insulation resistance does not change, then the high voltage parts failure is excluded.
Further, in step S2, outermost relay group K11 and K12 are disconnected first, battery management system BMS is again
Insulation resistance is acquired, in step S3, if insulating resistance value is increased in normal range (NR), then failure judgement source is that DC charging returns
Road；If insulation resistance does not change, then DC charging loop fault is excluded.
Further comprise：Relay group K9 and K10 are disconnected again, and BMS acquires insulation resistance again, as insulating resistance value increases
To normal range (NR), then failure judgement source is AC charging circuit；If insulation resistance does not change, then the event of AC charging circuit is excluded
Barrier.
Further comprise：Relay group K7 and K8 are disconnected again, and BMS acquires insulation resistance again, as insulating resistance value increases
To normal range (NR), then failure judgement source is electric air conditioner loop；If insulation resistance does not change, then electric air conditioner loop failure is excluded.
Further comprise：Relay group K5 and K6 are disconnected again, and BMS acquires insulation resistance again, as insulating resistance value increases
To normal range (NR), then failure judgement source is electrical heating circuit；If insulation resistance does not change, then electrical heating loop fault is excluded.
Further comprise：Relay group K3 and K4 are disconnected again, and BMS acquires insulation resistance again, as insulating resistance value increases
To normal range (NR), then failure judgement source is other high tension loops；If insulation resistance does not change, then other high tension loops events are excluded
Barrier, is judged as driving circuit failure.
In order to facilitate understand the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned
Technical solution is described in detail.
When specifically used, a kind of high-voltage isulation Fault Locating Method of new-energy automobile according to the present invention is borrowed
Help a kind of high-voltage isulation fault location system of new-energy automobile, which includes positive pole and cathode, cathode and relay
Device K1 connections, anode are connect with relay K2, and the first high tension loop is in series between relay K1 and relay K2, high with first
It pushes back road and is parallel with several groups detection unit, wherein the detection unit includes but not limited to electrical heating circuit, electric air-conditioning time
Road, AC charging circuit, DC charging circuit, detection unit further include other high tension loops, and each detection unit is equal
It is in series with the first relay respectively, the second relay is equipped between the adjacent detection unit in parallel.
When there is insulation fault, outermost relay K11 and relay K12 is disconnected first, battery management system BMS is again
Secondary acquisition insulation resistance, if insulating resistance value is increased in normal range (NR), then failure judgement source is DC charging circuit；Such as insulation
Resistance does not change, then excludes DC charging loop fault；
Relay K9 is disconnected again and relay K10, BMS acquire insulation resistance again, as insulating resistance value is increased to normal range (NR)
Interior, then failure judgement source is AC charging circuit；If insulation resistance does not change, then AC charging loop fault is excluded；
Relay K7 is disconnected again and relay K8, BMS acquire insulation resistance again, as insulating resistance value is increased to normal range (NR)
Interior, then failure judgement source is electric air conditioner loop；If insulation resistance does not change, then electric air conditioner loop failure is excluded；
Relay K5 is disconnected again and relay K6, BMS acquire insulation resistance again, as insulating resistance value is increased to normal range (NR)
Interior, then failure judgement source is electrical heating circuit；If insulation resistance does not change, then electrical heating loop fault is excluded；
Relay K3 is disconnected again and relay K4, BMS acquire insulation resistance again, as insulating resistance value is increased to normal range (NR)
Interior, then failure judgement source is other high tension loops；If insulation resistance does not change, then other high voltage faults are excluded, are judged as motor
Controller circuitry failure.
In conclusion controlling each respectively by using multigroup relay by means of the above-mentioned technical proposal of the present invention
The form of high voltage parts can specifically navigate to insulation fault parts.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of high-voltage isulation Fault Locating Method of new-energy automobile, which is characterized in that include the following steps：
S1 uses multiple relay groups, controls each high voltage parts respectively：
S2 disconnects the relay group of control high voltage parts when there is insulation fault, and insulation resistance is acquired using BMS；
The insulation resistances of the S3 based on acquisition, failure judgement source.
2. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 1, which is characterized in that step S1
In, the high voltage parts are followed successively by inwardly from outermost：DC charging circuit, AC charging circuit, electric air-conditioning, electricity add
Hot, such as electricity turns to, other high tension loops of electric braking, wherein the relay group for controlling the DC charging circuit be K11 and
K12, the relay group for controlling the AC charging circuit are K9 and K10, and the relay group for controlling the electric air-conditioning is K7 and K8,
It is K5 and K6 to control the electrically heated relay group, and the relay group for controlling other high tension loops is K3 and K4.
3. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 1, which is characterized in that step S2
In, it disconnects the relay group for controlling each high voltage parts successively inwardly from outermost, insulation resistance is acquired using BMS.
4. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 1, which is characterized in that step S3
In, such as insulating resistance value is increased in normal range (NR), then judges the source of trouble for the high voltage parts；Such as insulation resistance
Do not change, then excludes the high voltage parts failure.
5. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 2, which is characterized in that step S2
In, disconnect outermost relay group K11 and K12 first, battery management system BMS acquires insulation resistance again, in step S3, such as
Insulating resistance value is increased in normal range (NR), then failure judgement source is DC charging circuit；If insulation resistance does not change, then exclude
DC charging loop fault.
6. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 5, which is characterized in that further packet
It includes：Relay group K9 and K10 is disconnected again, and BMS acquires insulation resistance again, if insulating resistance value is increased in normal range (NR), then
Failure judgement source is AC charging circuit；If insulation resistance does not change, then AC charging loop fault is excluded.
7. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 6, which is characterized in that further packet
It includes：Relay group K7 and K8 is disconnected again, and BMS acquires insulation resistance, if insulating resistance value is increased in normal range (NR), then sentences again
The disconnected source of trouble is electric air conditioner loop；If insulation resistance does not change, then electric air conditioner loop failure is excluded.
8. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 7, which is characterized in that further packet
It includes：Relay group K5 and K6 is disconnected again, and BMS acquires insulation resistance, if insulating resistance value is increased in normal range (NR), then sentences again
The disconnected source of trouble is electrical heating circuit；If insulation resistance does not change, then electrical heating loop fault is excluded.
9. the high-voltage isulation Fault Locating Method of new-energy automobile according to claim 8, which is characterized in that further packet
It includes：Relay group K3 and K4 is disconnected again, and BMS acquires insulation resistance, if insulating resistance value is increased in normal range (NR), then sentences again
The disconnected source of trouble is other high tension loops；If insulation resistance does not change, then other high tension loop failures are excluded, are judged as driving circuit
Failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066894.2A CN108362982A (en) | 2018-01-24 | 2018-01-24 | A kind of high-voltage isulation Fault Locating Method of new-energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066894.2A CN108362982A (en) | 2018-01-24 | 2018-01-24 | A kind of high-voltage isulation Fault Locating Method of new-energy automobile |
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| Publication Number | Publication Date |
|---|---|
| CN108362982A true CN108362982A (en) | 2018-08-03 |
Family
ID=63006919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810066894.2A Pending CN108362982A (en) | 2018-01-24 | 2018-01-24 | A kind of high-voltage isulation Fault Locating Method of new-energy automobile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373309A (en) * | 2020-11-24 | 2021-02-19 | 东风华神汽车有限公司 | Method and system for automatically positioning insulation failure high-voltage component of new energy vehicle |
| CN112924829A (en) * | 2021-02-26 | 2021-06-08 | 科世达(上海)智能设备有限公司 | Insulation detection device |
| CN113002308A (en) * | 2021-02-19 | 2021-06-22 | 北京车和家信息技术有限公司 | Vehicle insulation failure detection method and device, storage medium and electronic equipment |
| CN113495202A (en) * | 2020-04-03 | 2021-10-12 | 北京新能源汽车股份有限公司 | Insulation detection circuit and method and electric automobile |
| CN114047457A (en) * | 2021-10-21 | 2022-02-15 | 深圳市道通科技股份有限公司 | Fault detection positioning method and device, electronic equipment and storage medium |
| CN114839497A (en) * | 2022-07-06 | 2022-08-02 | 中国重汽集团济南动力有限公司 | Rapid insulation monitoring fault positioning system and method for electric automobile |
-
2018
- 2018-01-24 CN CN201810066894.2A patent/CN108362982A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113495202A (en) * | 2020-04-03 | 2021-10-12 | 北京新能源汽车股份有限公司 | Insulation detection circuit and method and electric automobile |
| CN112373309A (en) * | 2020-11-24 | 2021-02-19 | 东风华神汽车有限公司 | Method and system for automatically positioning insulation failure high-voltage component of new energy vehicle |
| CN113002308A (en) * | 2021-02-19 | 2021-06-22 | 北京车和家信息技术有限公司 | Vehicle insulation failure detection method and device, storage medium and electronic equipment |
| CN112924829A (en) * | 2021-02-26 | 2021-06-08 | 科世达(上海)智能设备有限公司 | Insulation detection device |
| CN114047457A (en) * | 2021-10-21 | 2022-02-15 | 深圳市道通科技股份有限公司 | Fault detection positioning method and device, electronic equipment and storage medium |
| CN114839497A (en) * | 2022-07-06 | 2022-08-02 | 中国重汽集团济南动力有限公司 | Rapid insulation monitoring fault positioning system and method for electric automobile |
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Application publication date: 20180803 |